diff --git a/demo/index.ts b/demo/index.ts
index f2e3657..4eba74b 100644
--- a/demo/index.ts
+++ b/demo/index.ts
@@ -133,7 +133,7 @@ $(() => {
   }
 
   function register(data) {
-    webPhone = new WebPhone(data, {
+    const webPhoneConfig: any = {
       enableDscp: true,
       clientId: localStorage.getItem('webPhoneclientId')!,
       audioHelper: {
@@ -150,7 +150,15 @@ $(() => {
       },
       enableQos: true,
       enableMediaReportLogging: true,
-    });
+    };
+
+    const urlParams = new URLSearchParams(window.location.search);
+    if (urlParams.has('customHeader')) {
+      webPhoneConfig.defaultHeaders = ['P-Custom-Header: CustomValue'];
+    }
+
+    webPhone = new WebPhone(data, webPhoneConfig);
+
     global.webPhone = webPhone; // for debugging
 
     webPhone.userAgent.audioHelper.setVolume(0.3);
diff --git a/docs/index.9050f078.js b/docs/index.5edd3872.js
similarity index 95%
rename from docs/index.9050f078.js
rename to docs/index.5edd3872.js
index 30752e1..681c791 100644
--- a/docs/index.9050f078.js
+++ b/docs/index.5edd3872.js
@@ -23,5 +23,5 @@ PacketLoss: NLR=${t} JDR=${s}\r
 BurstGapLoss: BLD=0 BD=0 GLD=0 GD=0 GMIN=0\r
 Delay: RTD=${a} ESD=0 SOWD=0 IAJ=0\r
 QualityEst: MOSLQ=${ig(n)} MOSCQ=${ig(o)}\r
-DialogID: ${c};to-tag=${d};from-tag=${l}`},iS=()=>({localAddr:"",remoteAddr:"",callID:"",localID:"",remoteID:"",origID:"",fromTag:"",toTag:"",timestamp:{start:"",stop:""},netType:{},jitterBufferNominal:0,jitterBufferMax:0,jitterBufferDiscardRate:0,totalSumJitter:0,totalIntervalCount:0,NLR:"",JBM:0,JBN:"",JDR:"",MOSLQ:0,MOSCQ:0,RTD:0,status:!1,localcandidate:{},remotecandidate:{},inboundPacketsLost:0,inboundPacketsReceived:0,outboundPacketsLost:0,outboundPacketsSent:0}),iT=(e={},t)=>({...e,[t]:(t in e?parseInt(e[t],10):0)+1}),iw={bluetooth:"Bluetooth",cellular:"Cellulars",ethernet:"Ethernet",wifi:"WiFi",vpn:"VPN",wimax:"WiMax","2g":"2G","3g":"3G","4g":"4G"},iC=e=>{let t=e.systemNetworkType||"unknown",i=t&&"unknown"!==t?t:e||"unknown";return i in iw?iw[i]:i};function iR(e){if(e<=.008)return 4.5;if(e>.45)return 1;let t=93.2062077233-100*e/(100*e+17.2647)*95+4,i=2.06405+.031738*t-356641e-9*t*t+293143e-11*t*t*t;return i<1?1:i>4.5?4.5:(e>=.35&&i>2.7?i=2.7:e>=.3&&i>3?i=3:e>=.2&&i>3.6?i=3.6:e>=.15&&i>3.7?i=3.7:e>=.1&&i>3.9?i=4.1:e>=.05&&i>4.1?i=4.3:e>=.03&&i>4.1&&(i=4.4),i)}function iE(e){if(e.__patched)return e;e.__patched=!0,e.held=!1,e.muted=!1,e.media=e.userAgent.media,e.__dispose=e.dispose.bind(e),e.dispose=i1.bind(e);let t=new tK.EventEmitter;return e.on=t.on.bind(t),e.off=t.off.bind(t),e.once=t.once.bind(t),e.addListener=t.addListener.bind(t),e.removeListener=t.removeListener.bind(t),e.removeAllListeners=t.removeAllListeners.bind(t),e.emit=t.emit.bind(t),e.sendInfoAndReceiveResponse=iA.bind(e),e.startRecord=iP.bind(e),e.stopRecord=iH.bind(e),e.sendMoveResponse=i_.bind(e),e.park=iF.bind(e),e.flip=iO.bind(e),e.whisper=ij.bind(e),e.barge=iL.bind(e),e.mute=iU.bind(e),e.unmute=iB.bind(e),e.addTrack=iG.bind(e),e.stopMediaStats=iV.bind(e),e.warmTransfer=iJ.bind(e),e.blindTransfer=iW.bind(e),e.transfer=iK.bind(e),e.hold=iZ.bind(e),e.unhold=iz.bind(e),e.dtmf=iX.bind(e),e.reinvite=iY.bind(e),e.forward=i0.bind(e),e.__qosStats={},e.setQosStats=re.bind(e),i5(e),e.stateChange.addListener(t=>{switch(t){case v.Establishing:e.emit(tY.Session.Establishing);break;case v.Established:i3(e),e.addTrack(),e.emit(tY.Session.Established);break;case v.Terminating:i3(e),i9(e),e.emit(tY.Session.Terminating);break;case v.Terminated:i3(e),e.emit(tY.Session.Terminated)}}),e.userAgent.onSession&&e.userAgent.onSession(e),e.mediaStatsStarted=!1,e.noAudioReportCount=0,e.reinviteForNoAudioSent=!1,e}function ix(e){try{!function(e){let t=e.request.getHeader("P-Rc"),i=e.request.getHeader("P-Rc-Api-Call-Info");if(t){let i=new DOMParser().parseFromString(t,"text/xml"),r=i.getElementsByTagName("Hdr")[0],s=i.getElementsByTagName("Bdy")[0];r&&(e.rcHeaders={sid:r.getAttribute("SID")||void 0,request:r.getAttribute("Req")||void 0,from:r.getAttribute("From")||void 0,to:r.getAttribute("To")||void 0}),s&&ir(e.rcHeaders,{srvLvl:s.getAttribute("SrvLvl"),srvLvlExt:s.getAttribute("SrvLvlExt"),nm:s.getAttribute("Nm"),toNm:s.getAttribute("ToNm")})}if(i){let t=function(e=""){let t=e.split(/; */).filter(e=>e.includes("=")),i={};for(let e of t){let[t,r]=e.split("=");t=t.trim(),r=r.trim(),t in i||(i[t]=r)}return i}(i);ir(e.rcHeaders,t)}}(e)}catch(t){e.logger.error("Can't parse RC headers from invite request due to "+t)}e.canUseRCMCallControl=iI.bind(e),e.createSessionMessage=iD.bind(e),e.ignore=iq.bind(e),e.replyWithMessage=iN.bind(e),e.sendReceiveConfirm=ik.bind(e),e.sendSessionMessage=i$.bind(e),e.toVoicemail=iM.bind(e),e.__accept=e.accept.bind(e),e.accept=iQ.bind(e),i5(e)}function iI(){return!!this.rcHeaders}function iD(e){if(!this.rcHeaders)throw Error("createSessionMessage options is undefined");return ir(e,{sid:this.rcHeaders.sid,request:this.rcHeaders.request,from:this.rcHeaders.to,to:this.rcHeaders.from}),this.userAgent.createRcMessage(e)}async function ik(){return this.sendSessionMessage(is.receiveConfirm).then(e=>(this.logger.log("sendReceiveConfirm success"),e)).catch(e=>this.logger.error(`failed to send receive confirmation via SIP MESSAGE due to ${e.message}`))}function i$(e){return this.rcHeaders||this.logger.error("Can't send SIP MESSAGE related to session: no RC headers available"),this.userAgent.sendMessage(this.rcHeaders.from,this.createSessionMessage(e))}async function iA(e,t){let i=t||{};return ir(e,i),delete e.extraHeaders,new Promise((t,r)=>{let s={extraHeaders:[...i.extraHeaders||[],...this.userAgent.defaultHeaders],body:eq({body:JSON.stringify({request:e}),contentType:"application/json;charset=utf-8"})};this.info({requestDelegate:{onAccept:i=>{let s;let{message:{statusCode:n,callId:o}}=i;if(200===n){let i=n=>{let a;if(n.callId!==o)return;let c=n?.body||"{}";try{a=JSON.parse(c)}catch(e){a={}}if(a.response&&a.response.command===e.command&&a.response.result)return(s&&clearTimeout(s),this.off("RC_SIP_INFO",i),"0"===a.response.result.code.toString())?t(a.response.result):r(a.response.result)};s=setTimeout(()=>{r(Error("Timeout: no reply")),this.off("RC_SIP_INFO",i)},6e4),this.on("RC_SIP_INFO",i)}else r(Error(`The INFO response status code is: ${n} (waiting for 200)`))},onReject:e=>{r(Error(`The INFO response status code is: ${e.message.statusCode} (waiting for 200)`))}},requestOptions:s})})}async function iP(){return i2(this,!0)}async function iH(){return i2(this,!1)}function i_(e,t,i,r={}){let s={extraHeaders:[...r.extraHeaders||[],...this.userAgent.defaultHeaders],body:eq({body:JSON.stringify({response:{reqId:e,command:"move",result:{code:t,description:i}}}),contentType:"application/json;charset=utf-8"})};this.info({requestOptions:s})}function iq(){return this.sendReceiveConfirm().then(()=>this.sendSessionMessage(is.ignore))}function iM(){return this.sendReceiveConfirm().then(()=>this.sendSessionMessage(is.toVoicemail))}function iN(e){let t='RepTp="'+e.replyType+'"';return 0===e.replyType?t+=' Bdy="'+e.replyText+'"':(1===e.replyType||4===e.replyType)&&(t+=' Vl="'+e.timeValue+'" Units="'+e.timeUnits+'" Dir="'+e.callbackDirection+'"'),this.sendReceiveConfirm().then(()=>this.sendSessionMessage({reqid:is.replyWithMessage.reqid,body:t}))}async function iO(e){return this.sendInfoAndReceiveResponse(is.flip,{target:e})}async function ij(){return this.sendInfoAndReceiveResponse(is.whisper)}async function iL(){return this.sendInfoAndReceiveResponse(is.barge)}function iF(){return this.sendInfoAndReceiveResponse(is.park)}function iU(e){if(this.state!==v.Established){this.logger.warn("An active session is required to mute audio");return}if(this.muted){this.logger.debug("Session already muted");return}this.logger.log("Muting Audio"),i7(this,!1),this.muted=!0,e||this.emit(tY.Session.Muted,this)}function iB(e){if(this.state!==v.Established){this.logger.warn("An active session is required to unmute audio");return}if(!this.muted){this.logger.debug("Session not muted");return}this.logger.log("Unmuting Audio"),i7(this,!0),this.muted=!1,e||this.emit(tY.Session.Unmuted,this)}function iG(e,t){let i,r;let s=this.sessionDescriptionHandler,n=s.peerConnection;if(e&&t)i=e,r=t;else if(this.media)i=this.media.remote,r=this.media.local;else throw Error("HTML Media Element not Defined");let o=new MediaStream;n?.getReceivers?n.getReceivers().forEach(e=>{let t=e.track;t&&(o.addTrack(t),this.logger.log("Remote track added"))}):(o=s.remoteMediaStream,this.logger.log("Remote track added")),i.srcObject=o,i.play().catch(()=>{this.logger.error("Remote play was rejected")});let a=new MediaStream;n?.getSenders?n.getSenders().forEach(e=>{let t=e.track;t&&"audio"===t.kind&&(a.addTrack(t),this.logger.log("Local track added"))}):(a=s.localMediaStream,this.logger.log("Local track added")),r.srcObject=a,r.play().catch(()=>{this.logger.error("Local play was rejected")}),a&&o&&!this.mediaStatsStarted&&(this.mediaStreams=new il(this),this.logger.log("Start gathering media report"),this.mediaStatsStarted=!0,this.mediaStreams.getMediaStats(e=>{this.userAgent.enableMediaReportLogging&&this.logger.log(`Got media report: ${JSON.stringify(e)}`),!this.reinviteForNoAudioSent&&ih(e)?(this.logger.log("No audio report"),this.noAudioReportCount++,3===this.noAudioReportCount&&(this.logger.log("No audio for 6 sec. Trying to recover audio by sending Re-invite"),this.mediaStreams.reconnectMedia(),this.reinviteForNoAudioSent=!0,this.noAudioReportCount=0)):ih(e)||(this.noAudioReportCount=0)},2e3))}function iV(){this.logger.log("Stopping media stats collection"),this&&(this.mediaStreams?.stopMediaStats(),this.mediaStatsStarted=!1,this.noAudioReportCount=0)}async function iW(e,t={}){this.logger.log("Call transfer initiated");let i="string"==typeof e?tU.makeURI(`sip:${e}@${this.userAgent.sipInfo.domain}`):e;return this.refer(i,t)}async function iJ(e,t={requestOptions:{extraHeaders:[]}}){t.requestOptions.extraHeaders=(t.requestOptions.extraHeaders||[]).concat(this.userAgent.defaultHeaders);let i="string"==typeof e?tU.makeURI(`sip:${e}@${this.userAgent.sipInfo.domain}`):e;return this.logger.log("Completing warm transfer"),this.refer(i,t)}async function iK(e,t={}){return t.requestOptions||(t.requestOptions={}),t.requestOptions.extraHeaders||(t.requestOptions.extraHeaders=[]),t.requestOptions.extraHeaders=[...t.requestOptions.extraHeaders,...this.userAgent.defaultHeaders],this.blindTransfer(e,t)}function iY(e={}){e.sessionDescriptionHandlerOptions={...e.sessionDescriptionHandlerOptions,offerToReceiveAudio:!0,offerToReceiveVideo:!1,iceRestart:!0},e.requestDelegate=e.requestDelegate||{};let t=e.requestDelegate.onAccept?.bind(e.requestDelegate);return e.requestDelegate.onAccept=(...e)=>{ix(this),t?.(...e)},this.invite(e)}async function iZ(){this.stopMediaStats();try{this.logger.log("Hold Initiated"),await i8(this,!0),this.logger.log("Hold completed, held is set to true")}catch(e){throw Error("Hold could not be completed")}}async function iz(){try{this.logger.log("Unhold Initiated"),await i8(this,!1),this.logger.log("Unhold completed, held is set to false")}catch(e){throw Error("Unhold could not be completed")}this.addTrack(this.media.remote,this.media.local)}function iX(e,t=100,i=50){let r=parseInt(t.toString(),10),s=parseInt(i.toString(),10),n=this.sessionDescriptionHandler.peerConnection;if(!n){this.logger.error("Peer connection closed.");return}let o=n.getSenders().find(e=>e.track&&"audio"===e.track.kind).dtmf;if(void 0!==o&&o)return this.logger.log(`Send DTMF: ${e} Duration: ${r} InterToneGap: ${s}`),o.insertDTMF(e,r,s);throw Error("Send DTMF failed")}async function iQ(e={}){let t=e||{};t.extraHeaders=(t.extraHeaders||[]).concat(this.userAgent.defaultHeaders),t.sessionDescriptionHandlerOptions={...t.sessionDescriptionHandlerOptions},t.sessionDescriptionHandlerOptions.constraints=t.sessionDescriptionHandlerOptions.constraints||{...this.userAgent.constraints,optional:[{DtlsSrtpKeyAgreement:"true"}]};try{await this.__accept(t),this.startTime=new Date,this.emit(tY.Session.Accepted,this.request)}catch(e){-1!==e.message.indexOf("Permission denied")&&this.emit(tY.Session.UserMediaFailed)}}async function i0(e,t={},i={}){return await this.accept(t),new Promise(t=>{this.mute(),setTimeout(()=>{t(this.transfer(e,i))},700)})}async function i1(){i9(this),this.__dispose()}async function i2(e,t){let i=t?is.startRecord:is.stopRecord;if(e.__isRecording&&!t||!e.__isRecording&&t){let r=await e.sendInfoAndReceiveResponse(i);return e.__isRecording=!!t,r}}function i6(e,t){let i=e.sessionDescriptionHandler.peerConnection;if(!i){e.logger.error("Peer connection closed.");return}i.getReceivers().forEach(e=>{e.track&&(e.track.enabled=t)})}function i7(e,t){let i=e.sessionDescriptionHandler.peerConnection;if(!i){e.logger.error("Peer connection closed.");return}i.getSenders().forEach(e=>{e.track&&(e.track.enabled=t)})}function i8(e,t){return new Promise((i,r)=>{if(e.held===t){i();return}let s=e.sessionDescriptionHandlerOptionsReInvite;s.hold=t,e.sessionDescriptionHandlerOptionsReInvite=s,e.invite({requestDelegate:{onAccept:async r=>{e.held=t;let s=e.sessionDescriptionHandler.peerConnection.localDescription.sdp.match(/a=(sendrecv|sendonly|recvonly|inactive)/),n=s?s[1]:"";e.__localHold=200===r.message.statusCode&&"sendonly"===n,e.logger.log("localhold is set to "+e.__localHold),i6(e,!e.held),i7(e,!e.held&&!e.muted),i()},onReject:()=>{e.logger.warn("re-invite request was rejected"),i6(e,!e.held),i7(e,!e.held&&!e.muted),r(Error("re-invite request was rejected"))}}}).then(()=>{i6(e,!t),i7(e,!t&&!e.muted)}).catch(t=>{t instanceof eY&&e.logger.error("A hold request is already in progress."),r(t)})})}function i3(e){e.userAgent.audioHelper.playOutgoing(!1),e.userAgent.audioHelper.playIncoming(!1)}function i4(e){e.userAgent.enableQos&&(e.logger.log("SessionDescriptionHandler created"),ip(e),navigator.mediaDevices.enumerateDevices().then(t=>{t.forEach(t=>e.logger.log(`${t.kind} = ${t.label} ${JSON.stringify(t)}`))}))}function i5(e){if(e.__userAgentCoreEventsSetup)return;let t=e.userAgent.userAgentCore;t.on(tY.Session.UpdateReceived,t=>e.emit(tY.Session.UpdateReceived,t)),t.on(tY.Session.MoveToRcv,t=>e.emit(tY.Session.MoveToRcv,t)),t.on("RC_SIP_INFO",t=>e.emit("RC_SIP_INFO",t)),e.__userAgentCoreEventsSetup=!0}function i9(e){e.mediaStreams&&(e.logger.log("Releasing media streams"),e.mediaStreams.release())}function re(e){this.__qosStats.cpuOS=e.cpuOS||"0:0:0",this.__qosStats.cpuRC=e.cpuRC||"0:0:0",this.__qosStats.ram=e.ram||"0:0:0",this.__qosStats.netType=e.netType||void 0}var tK=j("7etJZ");function rt(e){switch(e.method){case w.UPDATE:this.logger.log("Receive UPDATE request. Do nothing just return 200 OK"),this.replyStateless(e,{statusCode:200}),this.emit(tY.Session.UpdateReceived,e);return;case w.INFO:{let t=function(e){if(!e?.body)return{};let t={};try{t=JSON.parse(e.body)}catch(e){return{}}return t}(e);if(t?.request?.reqId&&t?.request?.command==="move"&&t?.request?.target==="rcv"){this.replyStateless(e,{statusCode:200}),this.emit(tY.Session.MoveToRcv,t.request);return}if(this.emit("RC_SIP_INFO",e),e.getHeader("content-type").match(/^application\/json/i)){this.replyStateless(e,{statusCode:200});return}}}return this._receiveIncomingRequestFromTransport(e)}function ri(e){this.state!==k.Stopped&&(this.delegate?.onDisconnect&&this.delegate.onDisconnect(e),e&&this.transport.reconnect())}function rr(e){return e.body=e.body||"",'<Msg><Hdr SID="'+e.sid+'" Req="'+e.request+'" From="'+e.from+'" To="'+e.to+'" Cmd="'+e.reqid+'"/> <Bdy Cln="'+this.sipInfo.authorizationId+'" '+e.body+"/></Msg>"}function rs(e,t){let i=[`P-rc-ws: ${this.contact}`],r=e,[s]=r.split("@");r=r.startsWith("#")?`sip:${r.substring(1)}`:`sip:${r}`;let n=tU.makeURI(r);n.user=s;let o=new e7(this,n,t,"x-rc/agent",{extraHeaders:i});return new Promise((e,t)=>{o.message({requestDelegate:{onAccept:e,onReject:t}})})}async function rn(){await this.registerer.register({requestDelegate:{onReject:e=>{e&&(this.transport.isSipErrorCode(e.message.statusCode)&&this.transport.onSipErrorCode(),this.emit(tY.UserAgent.RegistrationFailed,e),this.logger.warn("UA Registration Failed"))}}})}async function ro(){await this.registerer.unregister()}function ra(e,t={}){let i={};i.extraHeaders=[...t.extraHeaders||[],...this.defaultHeaders,`P-Asserted-Identity: sip:${(t.fromNumber||this.sipInfo.username)+"@"+this.sipInfo.domain}`,...t.homeCountryId?[`P-rc-country-id: ${t.homeCountryId}`]:[]],t.RTCConstraints=t.RTCConstraints||{...this.constraints,optional:[{DtlsSrtpKeyAgreement:"true"}]},i.sessionDescriptionHandlerModifiers=this.modifiers,i.sessionDescriptionHandlerOptions={constraints:t.RTCConstraints},i.earlyMedia=this.earlyMedia,i.delegate={onSessionDescriptionHandler:()=>i4(r),onNotify:e=>e.accept()},this.audioHelper.playOutgoing(!0),this.logger.log(`Invite to ${e} created with playOutgoing set to true`);let r=new e6(this,tU.makeURI(`sip:${e}@${this.sipInfo.domain}`),i);return r.invite({requestDelegate:{onAccept:e=>{r.startTime=new Date,r.emit(tY.Session.Accepted,e.message)},onProgress:e=>{r.emit(tY.Session.Progress,e.message)}}}).then(()=>this.emit(tY.UserAgent.InviteSent,r)).catch(e=>{throw e.message.indexOf("Permission denied")>-1&&r.emit(tY.Session.UserMediaFailed),e}),iE(r),r}function rc(e,t={}){let i=[`Replaces: ${e.id};to-tag=${e.sipData.fromTag};from-tag=${e.sipData.toTag}`,"RC-call-type: replace"],[r,s]="Outbound"===e.direction?[e.to,e.from]:[e.from,e.to];t.extraHeaders=(t.extraHeaders||[]).concat(i),t.fromNumber=t.fromNumber||s;let n={extraHeaders:t.extraHeaders,sessionDescriptionHandlerOptions:{constraints:t.RTCConstraints||this.constraints}};return this.invite(r,n)}class rl{static dispatchAddTrackEvent(e,t){e.dispatchEvent(new MediaStreamTrackEvent("addtrack",{track:t}))}static dispatchRemoveTrackEvent(e,t){e.dispatchEvent(new MediaStreamTrackEvent("removetrack",{track:t}))}logger;mediaStreamFactory;sessionDescriptionHandlerConfiguration;_localMediaStream;_remoteMediaStream;_dataChannel;_peerConnection;_peerConnectionDelegate;iceGatheringCompletePromise;iceGatheringCompleteTimeoutId;iceGatheringCompleteResolve;iceGatheringCompleteReject;localMediaStreamConstraints;onDataChannel;constructor(e,t,i){e.debug("SessionDescriptionHandler.constructor"),this.logger=e,this.mediaStreamFactory=t,this.sessionDescriptionHandlerConfiguration=i,this._localMediaStream=new MediaStream,this._remoteMediaStream=new MediaStream,this._peerConnection=new RTCPeerConnection(i?.peerConnectionConfiguration),this.initPeerConnectionEventHandlers()}get localMediaStream(){return this._localMediaStream}get remoteMediaStream(){return this._remoteMediaStream}get dataChannel(){return this._dataChannel}get peerConnection(){return this._peerConnection}get peerConnectionDelegate(){return this._peerConnectionDelegate}set peerConnectionDelegate(e){this._peerConnectionDelegate=e}close(){this.logger.debug("SessionDescriptionHandler.close"),void 0!==this._peerConnection&&(this._peerConnection.getReceivers().forEach(e=>{e.track?.stop()}),this._peerConnection.getSenders().forEach(e=>{e.track?.stop()}),this._dataChannel&&this._dataChannel.close(),this._peerConnection.close(),this._peerConnection=void 0)}getDescription(e,t){if(this.logger.debug("SessionDescriptionHandler.getDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));this.onDataChannel=e?.onDataChannel;let i=e?.offerOptions?.iceRestart,r=e?.iceGatheringTimeout===void 0?this.sessionDescriptionHandlerConfiguration?.iceGatheringTimeout:e?.iceGatheringTimeout;return this.getLocalMediaStream(e).then(()=>this.enableSenderDscp()).then(()=>this.updateDirection(e)).then(()=>this.createDataChannel(e)).then(()=>this.createLocalOfferOrAnswer(e)).then(e=>this.applyModifiers(e,t)).then(e=>this.setLocalSessionDescription(e)).then(()=>this.waitForIceGatheringComplete(i,r)).then(()=>this.getLocalSessionDescription()).then(e=>({body:e.sdp,contentType:"application/sdp"})).catch(e=>{throw this.logger.error("SessionDescriptionHandler.getDescription failed - "+e),e})}hasDescription(e){return this.logger.debug("SessionDescriptionHandler.hasDescription"),"application/sdp"===e}sendDtmf(e,t){if(this.logger.debug("SessionDescriptionHandler.sendDtmf"),void 0===this._peerConnection)return this.logger.error("SessionDescriptionHandler.sendDtmf failed - peer connection closed"),!1;let i=this._peerConnection.getSenders();if(0===i.length)return this.logger.error("SessionDescriptionHandler.sendDtmf failed - no senders"),!1;let r=i[0].dtmf;if(!r)return this.logger.error("SessionDescriptionHandler.sendDtmf failed - no DTMF sender"),!1;let s=t?.duration,n=t?.interToneGap;try{r.insertDTMF(e,s,n)}catch(e){return this.logger.error(e),!1}return this.logger.log("SessionDescriptionHandler.sendDtmf sent via RTP: "+e.toString()),!0}setDescription(e,t,i){if(this.logger.debug("SessionDescriptionHandler.setDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));this.onDataChannel=t?.onDataChannel;let r="have-local-offer"===this._peerConnection.signalingState?"answer":"offer";return this.getLocalMediaStream(t).then(()=>this.applyModifiers({sdp:e,type:r},i)).then(e=>this.setRemoteSessionDescription(e)).catch(e=>{throw this.logger.error("SessionDescriptionHandler.setDescription failed - "+e),e})}applyModifiers(e,t){return(this.logger.debug("SessionDescriptionHandler.applyModifiers"),t&&0!==t.length)?t.reduce((e,t)=>e.then(t),Promise.resolve(e)).then(e=>{if(this.logger.debug("SessionDescriptionHandler.applyModifiers - modified sdp"),!e.sdp||!e.type)throw Error("Invalid SDP.");return{sdp:e.sdp,type:e.type}}):Promise.resolve(e)}createDataChannel(e){if(void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));if(e?.dataChannel!==!0||this._dataChannel)return Promise.resolve();switch(this._peerConnection.signalingState){case"stable":this.logger.debug("SessionDescriptionHandler.createDataChannel - creating data channel");try{return this._dataChannel=this._peerConnection.createDataChannel(e?.dataChannelLabel||"",e?.dataChannelOptions),this.onDataChannel&&this.onDataChannel(this._dataChannel),Promise.resolve()}catch(e){return Promise.reject(e)}case"have-remote-offer":return Promise.resolve();default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}}createLocalOfferOrAnswer(e){if(void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));switch(this._peerConnection.signalingState){case"stable":return this.logger.debug("SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer"),this._peerConnection.createOffer(e?.offerOptions);case"have-remote-offer":return this.logger.debug("SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer"),this._peerConnection.createAnswer(e?.answerOptions);default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}}getLocalMediaStream(e){if(this.logger.debug("SessionDescriptionHandler.getLocalMediaStream"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));let t={...e?.constraints};if(this.localMediaStreamConstraints){if(t.audio=t.audio||this.localMediaStreamConstraints.audio,t.video=t.video||this.localMediaStreamConstraints.video,JSON.stringify(this.localMediaStreamConstraints.audio)===JSON.stringify(t.audio)&&JSON.stringify(this.localMediaStreamConstraints.video)===JSON.stringify(t.video))return Promise.resolve()}else void 0===t.audio&&void 0===t.video&&(t={audio:!0});return this.localMediaStreamConstraints=t,this.mediaStreamFactory(t,this).then(e=>this.setLocalMediaStream(e))}async enableSenderDscp(){if(this.sessionDescriptionHandlerConfiguration?.enableDscp){if(!this._peerConnection)throw Error("Peer connection undefined.");for(let e of this._peerConnection.getSenders().filter(e=>e.track)){let t=e.getParameters();t.priority="high";try{await e.setParameters(t)}catch(t){console.error(`Error while setting encodings parameters for ${e.track.kind} Track ${e.track.id}: ${t.message||t.name}`)}}}}setLocalMediaStream(e){if(this.logger.debug("SessionDescriptionHandler.setLocalMediaStream"),!this._peerConnection)throw Error("Peer connection undefined.");let t=this._peerConnection,i=this._localMediaStream,r=[],s=e=>{let s=e.kind;if("audio"!==s&&"video"!==s)throw Error(`Unknown new track kind ${s}.`);let n=t.getSenders().find(e=>e.track&&e.track.kind===s);n?r.push(new Promise(e=>{this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${s} track`),e()}).then(()=>n.replaceTrack(e).then(()=>{let t=i.getTracks().find(e=>e.kind===s);t&&(t.stop(),i.removeTrack(t),rl.dispatchRemoveTrackEvent(i,t)),i.addTrack(e),rl.dispatchAddTrackEvent(i,e)}).catch(e=>{throw this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${s} track`),e}))):r.push(new Promise(e=>{this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${s} track`),e()}).then(()=>{try{t.addTrack(e,i)}catch(e){throw this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${s} track`),e}i.addTrack(e),rl.dispatchAddTrackEvent(i,e)}))},n=e.getAudioTracks();n.length&&s(n[0]);let o=e.getVideoTracks();return o.length&&s(o[0]),r.reduce((e,t)=>e.then(()=>t),Promise.resolve())}getLocalSessionDescription(){if(this.logger.debug("SessionDescriptionHandler.getLocalSessionDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));let e=this._peerConnection.localDescription;return e?Promise.resolve(e):Promise.reject(Error("Failed to get local session description"))}setLocalSessionDescription(e){return(this.logger.debug("SessionDescriptionHandler.setLocalSessionDescription"),void 0===this._peerConnection)?Promise.reject(Error("Peer connection closed.")):this._peerConnection.setLocalDescription(e)}setRemoteSessionDescription(e){let t;if(this.logger.debug("SessionDescriptionHandler.setRemoteSessionDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));let i=e.sdp;switch(this._peerConnection.signalingState){case"stable":t="offer";break;case"have-local-offer":t="answer";break;default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}return i?this._peerConnection.setRemoteDescription({sdp:i,type:t}):(this.logger.error("SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp"),Promise.reject(Error("SDP is undefined")))}setRemoteTrack(e){this.logger.debug("SessionDescriptionHandler.setRemoteTrack");let t=this._remoteMediaStream;t.getTrackById(e.id)?this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${e.kind} track`):"audio"===e.kind?(this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${e.kind} track`),t.getAudioTracks().forEach(e=>{e.stop(),t.removeTrack(e),rl.dispatchRemoveTrackEvent(t,e)}),t.addTrack(e),rl.dispatchAddTrackEvent(t,e)):"video"===e.kind&&(this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${e.kind} track`),t.getVideoTracks().forEach(e=>{e.stop(),t.removeTrack(e),rl.dispatchRemoveTrackEvent(t,e)}),t.addTrack(e),rl.dispatchAddTrackEvent(t,e))}updateDirection(e){if(void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));switch(this._peerConnection.signalingState){case"stable":this.logger.debug("SessionDescriptionHandler.updateDirection - setting offer direction");{let t=t=>{switch(t){case"inactive":case"recvonly":return e?.hold?"inactive":"recvonly";case"sendonly":case"sendrecv":return e?.hold?"sendonly":"sendrecv";case"stopped":return"stopped";default:throw Error("Should never happen")}};this._peerConnection.getTransceivers().forEach(e=>{if(e.direction){let i=t(e.direction);e.direction!==i&&(e.direction=i)}})}break;case"have-remote-offer":this.logger.debug("SessionDescriptionHandler.updateDirection - setting answer direction");{let t=(()=>{let e=this._peerConnection.remoteDescription;if(!e)throw Error("Failed to read remote offer");let t=/a=sendrecv\r\n|a=sendonly\r\n|a=recvonly\r\n|a=inactive\r\n/.exec(e.sdp);if(t)switch(t[0]){case"a=inactive\r\n":return"inactive";case"a=recvonly\r\n":return"recvonly";case"a=sendonly\r\n":return"sendonly";case"a=sendrecv\r\n":break;default:throw Error("Should never happen")}return"sendrecv"})(),i=(()=>{switch(t){case"inactive":return"inactive";case"recvonly":return"sendonly";case"sendonly":return e?.hold?"inactive":"recvonly";case"sendrecv":return e?.hold?"sendonly":"sendrecv";default:throw Error("Should never happen")}})();this._peerConnection.getTransceivers().forEach(e=>{e.direction&&"stopped"!==e.direction&&e.direction!==i&&(e.direction=i)})}break;default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}return Promise.resolve()}iceGatheringComplete(){this.logger.debug("SessionDescriptionHandler.iceGatheringComplete"),void 0!==this.iceGatheringCompleteTimeoutId&&(this.logger.debug("SessionDescriptionHandler.iceGatheringComplete - clearing timeout"),clearTimeout(this.iceGatheringCompleteTimeoutId),this.iceGatheringCompleteTimeoutId=void 0),void 0!==this.iceGatheringCompletePromise&&(this.logger.debug("SessionDescriptionHandler.iceGatheringComplete - resolving promise"),this.iceGatheringCompleteResolve?.(),this.iceGatheringCompletePromise=void 0,this.iceGatheringCompleteResolve=void 0,this.iceGatheringCompleteReject=void 0)}waitForIceGatheringComplete(e=!1,t=0){return(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete"),void 0===this._peerConnection)?Promise.reject(Error("Peer connection closed.")):e||"complete"!==this._peerConnection.iceGatheringState?(void 0!==this.iceGatheringCompletePromise&&(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise"),this.iceGatheringCompleteReject?.(Error("Promise superseded.")),this.iceGatheringCompletePromise=void 0,this.iceGatheringCompleteResolve=void 0,this.iceGatheringCompleteReject=void 0),this.iceGatheringCompletePromise=new Promise((e,i)=>{this.iceGatheringCompleteResolve=e,this.iceGatheringCompleteReject=i,t>0&&(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in "+t),this.iceGatheringCompleteTimeoutId=setTimeout(()=>{this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - timeout"),this.iceGatheringComplete()},t))}),this.iceGatheringCompletePromise):(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - already complete"),Promise.resolve())}initPeerConnectionEventHandlers(){if(this.logger.debug("SessionDescriptionHandler.initPeerConnectionEventHandlers"),!this._peerConnection)throw Error("Peer connection undefined.");let e=this._peerConnection;e.onconnectionstatechange=t=>{let i=e.connectionState;this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${i}`),this._peerConnectionDelegate?.onconnectionstatechange&&this._peerConnectionDelegate.onconnectionstatechange(t)},e.ondatachannel=e=>{this.logger.debug("SessionDescriptionHandler.ondatachannel"),this._dataChannel=e.channel,this.onDataChannel&&this.onDataChannel(this._dataChannel),this._peerConnectionDelegate?.ondatachannel&&this._peerConnectionDelegate.ondatachannel(e)},e.onicecandidate=e=>{this.logger.debug("SessionDescriptionHandler.onicecandidate"),this._peerConnectionDelegate?.onicecandidate&&this._peerConnectionDelegate.onicecandidate(e)},e.onicecandidateerror=e=>{this.logger.debug("SessionDescriptionHandler.onicecandidateerror"),this._peerConnectionDelegate?.onicecandidateerror&&this._peerConnectionDelegate.onicecandidateerror(e)},e.oniceconnectionstatechange=t=>{let i=e.iceConnectionState;this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${i}`),this._peerConnectionDelegate?.oniceconnectionstatechange&&this._peerConnectionDelegate.oniceconnectionstatechange(t)},e.onicegatheringstatechange=t=>{let i=e.iceGatheringState;this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${i}`),"complete"===i&&this.iceGatheringComplete(),this._peerConnectionDelegate?.onicegatheringstatechange&&this._peerConnectionDelegate.onicegatheringstatechange(t)},e.onnegotiationneeded=e=>{this.logger.debug("SessionDescriptionHandler.onnegotiationneeded"),this._peerConnectionDelegate?.onnegotiationneeded&&this._peerConnectionDelegate.onnegotiationneeded(e)},e.onsignalingstatechange=t=>{let i=e.signalingState;this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${i}`),this._peerConnectionDelegate?.onsignalingstatechange&&this._peerConnectionDelegate.onsignalingstatechange(t)},e.ontrack=e=>{let t=e.track.kind,i=e.track.enabled?"enabled":"disabled";this.logger.debug(`SessionDescriptionHandler.ontrack ${t} ${i}`),this.setRemoteTrack(e.track),this._peerConnectionDelegate?.ontrack&&this._peerConnectionDelegate.ontrack(e)}}}const rd=(e,t)=>{let i={iceGatheringTimeout:t?.iceGatheringTimeout!==void 0?t?.iceGatheringTimeout:5e3,enableDscp:t.enableDscp,peerConnectionConfiguration:{bundlePolicy:"balanced",certificates:void 0,iceCandidatePoolSize:0,iceServers:[{urls:"stun:stun.l.google.com:19302"}],iceTransportPolicy:"all",rtcpMuxPolicy:"require",...t?.peerConnectionConfiguration}};return new rl(e.userAgent.getLogger("sip.SessionDescriptionHandler"),e=>e.audio||e.video?void 0===navigator.mediaDevices?Promise.reject(Error("Media devices not available in insecure contexts.")):navigator.mediaDevices.getUserMedia(e):Promise.resolve(new MediaStream),i)},rh=_(JSON.parse('{"name":"ringcentral-web-phone","version":"1.0.3","homepage":"https://github.com/ringcentral/ringcentral-web-phone","bugs":{"url":"https://github.com/ringcentral/ringcentral-web-phone/issues"},"repository":{"type":"git","url":"git://github.com/ringcentral/ringcentral-web-phone.git"},"license":"MIT","author":{"name":"RingCentral, Inc.","email":"devsupport@ringcentral.com"},"contributors":[{"name":"Kirill Konshin"},{"name":"Elias Sun"},{"name":"Vyshakh Babji"},{"name":"Yatin Gera"},{"name":"Tyler Liu"},{"name":"Embbnux Ji"}],"main":"./lib/src/index.js","types":"./lib/src/index.d.ts","scripts":{"build":"rm -rf lib && yarn tsc && rm -rf docs && parcel build demo/index.html demo/callback.html --dist-dir docs --public-url ./","lint":"eslint --fix \'**/*.{ts,tsx,js,jsx}\' && prettier --write . && sort-package-json","serve":"rm -rf .parcel-cache && parcel demo/index.html demo/callback.html --dist-dir docs","test":"jest src/mediaStreams.spec.ts","test2":"NODE_OPTIONS=--require=dotenv-override-true/config playwright test test/index.spec.ts --workers=1","test:coverage":"cat .coverage/lcov.info | coveralls -v"},"dependencies":{"sip.js":"^0.21.2"},"devDependencies":{"@faker-js/faker":"^8.4.1","@playwright/test":"^1.44.1","@rc-ex/core":"^1.3.15","@ringcentral/sdk":"^5.0.1","@types/jest":"^29.5.12","@types/node":"^20.14.2","@typescript-eslint/eslint-plugin":"^7.13.0","@typescript-eslint/parser":"^7.13.0","bootstrap":"3.4.1","buffer":"^6.0.3","coveralls":"^3.1.1","crypto-browserify":"^3.12.0","dotenv-override-true":"^6.2.2","eslint":"8.57.0","eslint-config-alloy":"^5.1.2","eslint-config-prettier":"^9.1.0","eslint-plugin-jest":"^28.6.0","eslint-plugin-prettier":"^5.1.3","events":"^3.3.0","http-server":"^14.1.1","jest":"^29.7.0","jquery":"^3.7.1","parcel":"^2.12.0","prettier":"^3.3.1","process":"^0.11.10","querystring-es3":"^0.2.1","sort-package-json":"^2.10.0","stream-browserify":"^3.0.0","ts-jest":"^29.1.4","ts-node":"^10.9.2","ttpt":"^0.9.6","typescript":"^5.4.5","wait-for-async":"^0.6.1","yarn-upgrade-all":"^0.7.2"},"preferGlobal":false,"targets":{"main":false,"module":false,"types":false,"browser":false},"yarn-upgrade-all":{"ignore":["bootstrap","eslint"]}}')).version,ru={autoStop:!0,builtinEnabled:!0,earlyMedia:!1,enableDefaultModifiers:!0,enableDscp:!1,iceTransportPolicy:"all",maxReconnectionAttemptsNoBackup:15,maxReconnectionAttemptsWithBackup:10,mediaConstraints:{audio:!0,video:!1},modifiers:[],qosCollectInterval:5e3,reconnectionTimeoutNoBackup:5,reconnectionTimeoutWithBackup:4,transportServers:[],turnServers:[],uuid:ii(),uuidKey:"rc-webPhone-uuid"};class rg{static version=rh;static uuid=ii;static extend=ir;static MediaStreams=il;static MediaStreamsImpl=id;sipInfo;uuidKey;appName;appVersion;userAgent;constructor(e={},t={}){let i={...ru,...t};this.sipInfo=e.sipInfo,Array.isArray(this.sipInfo)&&(this.sipInfo=this.sipInfo[0]),this.uuidKey=i.uuidKey,this.appName=i.appName,this.appVersion=i.appVersion;let r=i.uuid;localStorage.setItem(this.uuidKey,r);let s=navigator.userAgent.match(/\((.*?)\)/),n=null===s?"":s[1].replace(/[^a-zA-Z0-9.:_]+/g,"-"),o=(this.appName?this.appName+(this.appVersion?"/"+this.appVersion:"")+" ":"")+(n||"")+` RCWEBPHONE/${rg.version}`,a=i.modifiers;i.enableDefaultModifiers||(a.push(B.stripG722),a.push(B.stripTcpCandidates)),i.enableMidLinesInSDP&&a.push(B.addMidLines);let c=i.enablePlanB?"plan-b":"unified-plan",l=i.stunServers||io,d=i.iceTransportPolicy,h=[];i.enableTurnServers&&(h=i.turnServers.map(e=>({urls:e})),i.iceCheckingTimeout=i.iceCheckingTimeout||2e3),h=[...h,...l.map(e=>({urls:/^(stun:)/.test(e)?e:`stun:${e}`}))];let u=i.sessionDescriptionHandlerFactoryOptions||{iceGatheringTimeout:i.iceCheckingTimeout||500,enableDscp:i.enableDscp,peerConnectionConfiguration:{iceServers:h,iceTransportPolicy:d,sdpSemantics:c}};u.enableDscp=!!i.enableDscp,i.modifiers=a;let g=navigator.userAgent.toLowerCase();g.includes("firefox")&&!g.includes("chrome")&&(i.earlyMedia=!0);let p=i.sessionDescriptionHandlerFactory||rd,f=e.sipErrorCodes?.length?e.sipErrorCodes:ia,m=i.reconnectionTimeoutWithBackup,v=i.maxReconnectionAttemptsWithBackup;this.sipInfo.outboundProxy&&this.sipInfo.transport&&(i.transportServers.push({uri:this.sipInfo.transport.toLowerCase()+"://"+this.sipInfo.outboundProxy}),m=i.reconnectionTimeoutNoBackup,v=i.maxReconnectionAttemptsNoBackup),this.sipInfo.outboundProxyBackup&&this.sipInfo.transport&&i.transportServers.push({uri:this.sipInfo.transport.toLowerCase()+"://"+this.sipInfo.outboundProxyBackup}),i.reconnectionTimeout=i.reconnectionTimeout||m,i.maxReconnectionAttempts=i.maxReconnectionAttempts||v;let y=i.transportServers.length?i.transportServers[0].uri:"",S={uri:tU.makeURI(`sip:${this.sipInfo.username}@${this.sipInfo.domain}`),transportOptions:{server:y,traceSip:!0,connectionTimeout:5,keepAliveDebounce:i.keepAliveDebounce,keepAliveInterval:i.keepAliveInterval},reconnectionAttempts:0,authorizationUsername:this.sipInfo.authorizationId,authorizationPassword:this.sipInfo.password,logLevel:b[i.logLevel]||"debug",logBuiltinEnabled:i.builtinEnabled,logConnector:i.connector||void 0,userAgentString:o,sessionDescriptionHandlerFactoryOptions:u,sessionDescriptionHandlerFactory:p,allowLegacyNotifications:!0};i.sipErrorCodes=f,i.switchBackInterval=this.sipInfo.switchBackInterval,this.userAgent=function(e,t,i,r){let s=new tU({delegate:{onConnect:()=>s.register(),onInvite:e=>{s.audioHelper.playIncoming(!0),e.delegate={},e.delegate.onSessionDescriptionHandler=()=>i4(e),iE(e),ix(e),e.logger.log("UA received incoming call invite"),e.sendReceiveConfirm(),s.emit(tY.UserAgent.Invite,e)},onNotify:e=>{""===e.request.getHeader("Event")&&s.emit(tY.UserAgent.ProvisionUpdate),s.logger.log("UA received notify"),e.accept()}},...e}),n=new tK.EventEmitter;return s.on=n.on.bind(n),s.off=n.off.bind(n),s.once=n.once.bind(n),s.addListener=n.addListener.bind(n),s.removeListener=n.removeListener.bind(n),s.removeAllListeners=n.removeAllListeners.bind(n),s.defaultHeaders=[`P-rc-endpoint-id: ${r}`,`Client-id: ${i.clientId}`],s.regId=i.regId,s.media={},s.enableQos=i.enableQos,s.enableMediaReportLogging=i.enableMediaReportLogging,s.qosCollectInterval=i.qosCollectInterval,i.media?.remote&&i.media.local?(s.media.remote=i.media.remote,s.media.local=i.media.local):s.media=void 0,s.registerer=new e8(s,{regId:s.regId,instanceId:s.instanceId,extraHeaders:s.defaultHeaders}),s.sipInfo=t,s.modifiers=i.modifiers,s.constraints=i.mediaConstraints,s.earlyMedia=i.earlyMedia,s.audioHelper=new it(i.audioHelper),s.onSession=i.onSession,s._transport=function(e,t){e.reconnectionAttempts=0,e.sipErrorCodes=t.sipErrorCodes,e.servers=t.transportServers;let i=new tK.EventEmitter;return e.on=i.on.bind(i),e.off=i.off.bind(i),e.once=i.once.bind(i),e.addListener=i.addListener.bind(i),e.removeListener=i.removeListener.bind(i),e.removeAllListeners=i.removeAllListeners.bind(i),e.emit=i.emit.bind(i),e.mainProxy=t.transportServers[0],e.switchBackInterval=t.switchBackInterval,e.reconnectionTimeout=t.reconnectionTimeout,e.maxReconnectionAttempts=t.maxReconnectionAttempts,e.__afterWSConnected=t1.bind(e),e.__clearSwitchBackToMainProxyTimer=t8.bind(e),e.__computeRandomTimeout=tz.bind(e),e.__connect=e.connect,e.__isCurrentMainProxy=t0.bind(e),e.__onConnectedToBackup=t6.bind(e),e.__onConnectedToMain=t2.bind(e),e.__resetServersErrorStatus=tQ.bind(e),e.__scheduleSwitchBackToMainProxy=t7.bind(e),e.__setServerIsError=tX.bind(e),e.connect=tZ.bind(e),e.getNextWsServer=t4.bind(e),e.isSipErrorCode=t9.bind(e),e.noAvailableServers=t5.bind(e),e.onSipErrorCode=ie.bind(e),e.reconnect=t3.bind(e),e.stateChange.addListener(t=>{switch(t){case D.Connecting:e.emit(tY.Transport.Connecting);break;case D.Connected:e.emit(tY.Transport.Connected),e.__afterWSConnected();break;case D.Disconnecting:e.emit(tY.Transport.Disconnecting);break;case D.Disconnected:e.emit(tY.Transport.Disconnected)}}),e}(s.transport,i),s.onTransportDisconnect=ri.bind(s),s.emit=n.emit.bind(n),s.register=rn.bind(s),s.unregister=ro.bind(s),s.invite=ra.bind(s),s.sendMessage=rs.bind(s),s.createRcMessage=rr.bind(s),s.switchFrom=rc.bind(s),function(e){let t=e.userAgentCore,i=new tK.EventEmitter;t.on=i.on.bind(i),t.off=i.off.bind(i),t.addListener=i.addListener.bind(i),t.removeListener=i.removeListener.bind(i),t.emit=i.emit.bind(i),t._receiveIncomingRequestFromTransport=t.receiveIncomingRequestFromTransport.bind(e.userAgentCore),t.receiveIncomingRequestFromTransport=rt.bind(e.userAgentCore)}(s),s.start(),s.stateChange.addListener(e=>{switch(e){case k.Started:s.emit(tY.UserAgent.Started);break;case k.Stopped:s.emit(tY.UserAgent.Stopped)}}),s.registerer.stateChange.addListener(e=>{switch(e){case R.Registered:s.emit(tY.UserAgent.Registered);break;case R.Unregistered:s.emit(tY.UserAgent.Unregistered)}}),s}(S,this.sipInfo,i,r)}}var rp={};rp=new URL("incoming.4df5d2c2.ogg",import.meta.url).toString();var rf={};rf=new URL("outgoing.32ff67a1.ogg",import.meta.url).toString(),H.jQuery=_(F),j("2yR94"),_(F)(()=>{let e,t,i,r;let s=0,n=_(F)("#app"),o=_(F)("#template-login"),a=_(F)("#template-auth-flow"),c=_(F)("#template-call"),l=_(F)("#template-incoming"),d=_(F)("#template-accepted"),h=document.getElementById("remoteVideo"),u=document.getElementById("localVideo"),g=!0,p="";function f(e){return _(F)(e.html())}function m(t,n,o,a,c){return s=c,localStorage.setItem("webPhoneServer",t||""),localStorage.setItem("webPhoneclientId",n||""),localStorage.setItem("webPhoneclientSecret",o||""),a&&a.length>0&&localStorage.setItem("webPhoneJwtToken",a),localStorage.setItem("webPhoneLogLevel",(s||0).toString()),e.get("/restapi/v1.0/account/~/extension/~").then(e=>e.json()).then(t=>(console.log("Extension info",i=t),e.get("/restapi/v1.0/account/~/extension/~/phone-number"))).then(e=>e.json()).then(e=>{r=e.records.filter(e=>!0===e.primary)[0].phoneNumber}).then(()=>e.post("/restapi/v1.0/client-info/sip-provision",{sipInfo:[{transport:"WSS"}]})).then(e=>e.json()).then(b).then(C).catch(e=>{console.error("Error in main promise chain"),console.error(e.stack||e)})}function b(e){return t=new rg(e,{enableDscp:!0,clientId:localStorage.getItem("webPhoneclientId"),audioHelper:{enabled:!0,incoming:_(rp),outgoing:_(rf)},logLevel:s,appName:"WebPhoneDemo",appVersion:"1.0.0",media:{remote:h,local:u},enableQos:!0,enableMediaReportLogging:!0}),H.webPhone=t,t.userAgent.audioHelper.setVolume(.3),t.userAgent.on("invite",y),t.userAgent.on("connecting",()=>{console.log("UA connecting")}),t.userAgent.on("connected",()=>{console.log("UA Connected")}),t.userAgent.on("disconnected",()=>{console.log("UA Disconnected")}),t.userAgent.on("registered",()=>{console.log("UA Registered")}),t.userAgent.on("unregistered",()=>{console.log("UA Unregistered")}),t.userAgent.on("registrationFailed",function(){console.log("UA RegistrationFailed",arguments)}),t.userAgent.on("message",function(){console.log("UA Message",arguments)}),t.userAgent.transport.on("switchBackProxy",()=>{console.log("switching back to primary outbound 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t.requestOptions||(t.requestOptions={}),t.requestOptions.extraHeaders||(t.requestOptions.extraHeaders=[]),t.requestOptions.extraHeaders=[...t.requestOptions.extraHeaders,...this.userAgent.defaultHeaders],this.blindTransfer(e,t)}function iY(e={}){e.sessionDescriptionHandlerOptions={...e.sessionDescriptionHandlerOptions,offerToReceiveAudio:!0,offerToReceiveVideo:!1,iceRestart:!0},e.requestDelegate=e.requestDelegate||{};let t=e.requestDelegate.onAccept?.bind(e.requestDelegate);return e.requestDelegate.onAccept=(...e)=>{ix(this),t?.(...e)},this.invite(e)}async function iZ(){this.stopMediaStats();try{this.logger.log("Hold Initiated"),await i8(this,!0),this.logger.log("Hold completed, held is set to true")}catch(e){throw Error("Hold could not be completed")}}async function iz(){try{this.logger.log("Unhold Initiated"),await i8(this,!1),this.logger.log("Unhold completed, held is set to false")}catch(e){throw Error("Unhold could not be 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denied")&&this.emit(tY.Session.UserMediaFailed)}}async function i0(e,t={},i={}){return await this.accept(t),new Promise(t=>{this.mute(),setTimeout(()=>{t(this.transfer(e,i))},700)})}async function i1(){i9(this),this.__dispose()}async function i2(e,t){let i=t?is.startRecord:is.stopRecord;if(e.__isRecording&&!t||!e.__isRecording&&t){let r=await e.sendInfoAndReceiveResponse(i);return e.__isRecording=!!t,r}}function i6(e,t){let i=e.sessionDescriptionHandler.peerConnection;if(!i){e.logger.error("Peer connection closed.");return}i.getReceivers().forEach(e=>{e.track&&(e.track.enabled=t)})}function i7(e,t){let i=e.sessionDescriptionHandler.peerConnection;if(!i){e.logger.error("Peer connection closed.");return}i.getSenders().forEach(e=>{e.track&&(e.track.enabled=t)})}function i8(e,t){return new Promise((i,r)=>{if(e.held===t){i();return}let s=e.sessionDescriptionHandlerOptionsReInvite;s.hold=t,e.sessionDescriptionHandlerOptionsReInvite=s,e.invite({requestDelegate:{onAccept:async r=>{e.held=t;let s=e.sessionDescriptionHandler.peerConnection.localDescription.sdp.match(/a=(sendrecv|sendonly|recvonly|inactive)/),n=s?s[1]:"";e.__localHold=200===r.message.statusCode&&"sendonly"===n,e.logger.log("localhold is set to "+e.__localHold),i6(e,!e.held),i7(e,!e.held&&!e.muted),i()},onReject:()=>{e.logger.warn("re-invite request was rejected"),i6(e,!e.held),i7(e,!e.held&&!e.muted),r(Error("re-invite request was rejected"))}}}).then(()=>{i6(e,!t),i7(e,!t&&!e.muted)}).catch(t=>{t instanceof eY&&e.logger.error("A hold request is already in progress."),r(t)})})}function i3(e){e.userAgent.audioHelper.playOutgoing(!1),e.userAgent.audioHelper.playIncoming(!1)}function i4(e){e.userAgent.enableQos&&(e.logger.log("SessionDescriptionHandler created"),ip(e),navigator.mediaDevices.enumerateDevices().then(t=>{t.forEach(t=>e.logger.log(`${t.kind} = ${t.label} ${JSON.stringify(t)}`))}))}function i5(e){if(e.__userAgentCoreEventsSetup)return;let t=e.userAgent.userAgentCore;t.on(tY.Session.UpdateReceived,t=>e.emit(tY.Session.UpdateReceived,t)),t.on(tY.Session.MoveToRcv,t=>e.emit(tY.Session.MoveToRcv,t)),t.on("RC_SIP_INFO",t=>e.emit("RC_SIP_INFO",t)),e.__userAgentCoreEventsSetup=!0}function i9(e){e.mediaStreams&&(e.logger.log("Releasing media streams"),e.mediaStreams.release())}function re(e){this.__qosStats.cpuOS=e.cpuOS||"0:0:0",this.__qosStats.cpuRC=e.cpuRC||"0:0:0",this.__qosStats.ram=e.ram||"0:0:0",this.__qosStats.netType=e.netType||void 0}var tK=j("7etJZ");function rt(e){switch(e.method){case w.UPDATE:this.logger.log("Receive UPDATE request. Do nothing just return 200 OK"),this.replyStateless(e,{statusCode:200}),this.emit(tY.Session.UpdateReceived,e);return;case w.INFO:{let t=function(e){if(!e?.body)return{};let t={};try{t=JSON.parse(e.body)}catch(e){return{}}return t}(e);if(t?.request?.reqId&&t?.request?.command==="move"&&t?.request?.target==="rcv"){this.replyStateless(e,{statusCode:200}),this.emit(tY.Session.MoveToRcv,t.request);return}if(this.emit("RC_SIP_INFO",e),e.getHeader("content-type").match(/^application\/json/i)){this.replyStateless(e,{statusCode:200});return}}}return this._receiveIncomingRequestFromTransport(e)}function ri(e){this.state!==k.Stopped&&(this.delegate?.onDisconnect&&this.delegate.onDisconnect(e),e&&this.transport.reconnect())}function rr(e){return e.body=e.body||"",'<Msg><Hdr SID="'+e.sid+'" Req="'+e.request+'" From="'+e.from+'" To="'+e.to+'" Cmd="'+e.reqid+'"/> <Bdy Cln="'+this.sipInfo.authorizationId+'" '+e.body+"/></Msg>"}function rs(e,t){let i=[`P-rc-ws: ${this.contact}`],r=e,[s]=r.split("@");r=r.startsWith("#")?`sip:${r.substring(1)}`:`sip:${r}`;let n=tU.makeURI(r);n.user=s;let o=new e7(this,n,t,"x-rc/agent",{extraHeaders:i});return new Promise((e,t)=>{o.message({requestDelegate:{onAccept:e,onReject:t}})})}async function rn(){await this.registerer.register({requestDelegate:{onReject:e=>{e&&(this.transport.isSipErrorCode(e.message.statusCode)&&this.transport.onSipErrorCode(),this.emit(tY.UserAgent.RegistrationFailed,e),this.logger.warn("UA Registration Failed"))}}})}async function ro(){await this.registerer.unregister()}function ra(e,t={}){let i={};i.extraHeaders=[...t.extraHeaders||[],...this.defaultHeaders,`P-Asserted-Identity: sip:${(t.fromNumber||this.sipInfo.username)+"@"+this.sipInfo.domain}`,...t.homeCountryId?[`P-rc-country-id: ${t.homeCountryId}`]:[]],t.RTCConstraints=t.RTCConstraints||{...this.constraints,optional:[{DtlsSrtpKeyAgreement:"true"}]},i.sessionDescriptionHandlerModifiers=this.modifiers,i.sessionDescriptionHandlerOptions={constraints:t.RTCConstraints},i.earlyMedia=this.earlyMedia,i.delegate={onSessionDescriptionHandler:()=>i4(r),onNotify:e=>e.accept()},this.audioHelper.playOutgoing(!0),this.logger.log(`Invite to ${e} created with playOutgoing set to true`);let r=new e6(this,tU.makeURI(`sip:${e}@${this.sipInfo.domain}`),i);return r.invite({requestDelegate:{onAccept:e=>{r.startTime=new Date,r.emit(tY.Session.Accepted,e.message)},onProgress:e=>{r.emit(tY.Session.Progress,e.message)}}}).then(()=>this.emit(tY.UserAgent.InviteSent,r)).catch(e=>{throw e.message.indexOf("Permission denied")>-1&&r.emit(tY.Session.UserMediaFailed),e}),iE(r),r}function rc(e,t={}){let i=[`Replaces: ${e.id};to-tag=${e.sipData.fromTag};from-tag=${e.sipData.toTag}`,"RC-call-type: replace"],[r,s]="Outbound"===e.direction?[e.to,e.from]:[e.from,e.to];t.extraHeaders=(t.extraHeaders||[]).concat(i),t.fromNumber=t.fromNumber||s;let n={extraHeaders:t.extraHeaders,sessionDescriptionHandlerOptions:{constraints:t.RTCConstraints||this.constraints}};return this.invite(r,n)}class rl{static dispatchAddTrackEvent(e,t){e.dispatchEvent(new MediaStreamTrackEvent("addtrack",{track:t}))}static dispatchRemoveTrackEvent(e,t){e.dispatchEvent(new MediaStreamTrackEvent("removetrack",{track:t}))}logger;mediaStreamFactory;sessionDescriptionHandlerConfiguration;_localMediaStream;_remoteMediaStream;_dataChannel;_peerConnection;_peerConnectionDelegate;iceGatheringCompletePromise;iceGatheringCompleteTimeoutId;iceGatheringCompleteResolve;iceGatheringCompleteReject;localMediaStreamConstraints;onDataChannel;constructor(e,t,i){e.debug("SessionDescriptionHandler.constructor"),this.logger=e,this.mediaStreamFactory=t,this.sessionDescriptionHandlerConfiguration=i,this._localMediaStream=new MediaStream,this._remoteMediaStream=new MediaStream,this._peerConnection=new RTCPeerConnection(i?.peerConnectionConfiguration),this.initPeerConnectionEventHandlers()}get localMediaStream(){return this._localMediaStream}get remoteMediaStream(){return this._remoteMediaStream}get dataChannel(){return this._dataChannel}get peerConnection(){return this._peerConnection}get peerConnectionDelegate(){return this._peerConnectionDelegate}set peerConnectionDelegate(e){this._peerConnectionDelegate=e}close(){this.logger.debug("SessionDescriptionHandler.close"),void 0!==this._peerConnection&&(this._peerConnection.getReceivers().forEach(e=>{e.track?.stop()}),this._peerConnection.getSenders().forEach(e=>{e.track?.stop()}),this._dataChannel&&this._dataChannel.close(),this._peerConnection.close(),this._peerConnection=void 0)}getDescription(e,t){if(this.logger.debug("SessionDescriptionHandler.getDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));this.onDataChannel=e?.onDataChannel;let i=e?.offerOptions?.iceRestart,r=e?.iceGatheringTimeout===void 0?this.sessionDescriptionHandlerConfiguration?.iceGatheringTimeout:e?.iceGatheringTimeout;return this.getLocalMediaStream(e).then(()=>this.enableSenderDscp()).then(()=>this.updateDirection(e)).then(()=>this.createDataChannel(e)).then(()=>this.createLocalOfferOrAnswer(e)).then(e=>this.applyModifiers(e,t)).then(e=>this.setLocalSessionDescription(e)).then(()=>this.waitForIceGatheringComplete(i,r)).then(()=>this.getLocalSessionDescription()).then(e=>({body:e.sdp,contentType:"application/sdp"})).catch(e=>{throw this.logger.error("SessionDescriptionHandler.getDescription failed - "+e),e})}hasDescription(e){return this.logger.debug("SessionDescriptionHandler.hasDescription"),"application/sdp"===e}sendDtmf(e,t){if(this.logger.debug("SessionDescriptionHandler.sendDtmf"),void 0===this._peerConnection)return this.logger.error("SessionDescriptionHandler.sendDtmf failed - peer connection closed"),!1;let i=this._peerConnection.getSenders();if(0===i.length)return this.logger.error("SessionDescriptionHandler.sendDtmf failed - no senders"),!1;let r=i[0].dtmf;if(!r)return this.logger.error("SessionDescriptionHandler.sendDtmf failed - no DTMF sender"),!1;let s=t?.duration,n=t?.interToneGap;try{r.insertDTMF(e,s,n)}catch(e){return this.logger.error(e),!1}return this.logger.log("SessionDescriptionHandler.sendDtmf sent via RTP: "+e.toString()),!0}setDescription(e,t,i){if(this.logger.debug("SessionDescriptionHandler.setDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));this.onDataChannel=t?.onDataChannel;let r="have-local-offer"===this._peerConnection.signalingState?"answer":"offer";return this.getLocalMediaStream(t).then(()=>this.applyModifiers({sdp:e,type:r},i)).then(e=>this.setRemoteSessionDescription(e)).catch(e=>{throw this.logger.error("SessionDescriptionHandler.setDescription failed - "+e),e})}applyModifiers(e,t){return(this.logger.debug("SessionDescriptionHandler.applyModifiers"),t&&0!==t.length)?t.reduce((e,t)=>e.then(t),Promise.resolve(e)).then(e=>{if(this.logger.debug("SessionDescriptionHandler.applyModifiers - modified sdp"),!e.sdp||!e.type)throw Error("Invalid SDP.");return{sdp:e.sdp,type:e.type}}):Promise.resolve(e)}createDataChannel(e){if(void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));if(e?.dataChannel!==!0||this._dataChannel)return Promise.resolve();switch(this._peerConnection.signalingState){case"stable":this.logger.debug("SessionDescriptionHandler.createDataChannel - creating data channel");try{return this._dataChannel=this._peerConnection.createDataChannel(e?.dataChannelLabel||"",e?.dataChannelOptions),this.onDataChannel&&this.onDataChannel(this._dataChannel),Promise.resolve()}catch(e){return Promise.reject(e)}case"have-remote-offer":return Promise.resolve();default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}}createLocalOfferOrAnswer(e){if(void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));switch(this._peerConnection.signalingState){case"stable":return this.logger.debug("SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer"),this._peerConnection.createOffer(e?.offerOptions);case"have-remote-offer":return this.logger.debug("SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer"),this._peerConnection.createAnswer(e?.answerOptions);default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}}getLocalMediaStream(e){if(this.logger.debug("SessionDescriptionHandler.getLocalMediaStream"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));let t={...e?.constraints};if(this.localMediaStreamConstraints){if(t.audio=t.audio||this.localMediaStreamConstraints.audio,t.video=t.video||this.localMediaStreamConstraints.video,JSON.stringify(this.localMediaStreamConstraints.audio)===JSON.stringify(t.audio)&&JSON.stringify(this.localMediaStreamConstraints.video)===JSON.stringify(t.video))return Promise.resolve()}else void 0===t.audio&&void 0===t.video&&(t={audio:!0});return this.localMediaStreamConstraints=t,this.mediaStreamFactory(t,this).then(e=>this.setLocalMediaStream(e))}async enableSenderDscp(){if(this.sessionDescriptionHandlerConfiguration?.enableDscp){if(!this._peerConnection)throw Error("Peer connection undefined.");for(let e of this._peerConnection.getSenders().filter(e=>e.track)){let t=e.getParameters();t.priority="high";try{await e.setParameters(t)}catch(t){console.error(`Error while setting encodings parameters for ${e.track.kind} Track ${e.track.id}: ${t.message||t.name}`)}}}}setLocalMediaStream(e){if(this.logger.debug("SessionDescriptionHandler.setLocalMediaStream"),!this._peerConnection)throw Error("Peer connection undefined.");let t=this._peerConnection,i=this._localMediaStream,r=[],s=e=>{let s=e.kind;if("audio"!==s&&"video"!==s)throw Error(`Unknown new track kind ${s}.`);let n=t.getSenders().find(e=>e.track&&e.track.kind===s);n?r.push(new Promise(e=>{this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${s} track`),e()}).then(()=>n.replaceTrack(e).then(()=>{let t=i.getTracks().find(e=>e.kind===s);t&&(t.stop(),i.removeTrack(t),rl.dispatchRemoveTrackEvent(i,t)),i.addTrack(e),rl.dispatchAddTrackEvent(i,e)}).catch(e=>{throw this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${s} track`),e}))):r.push(new Promise(e=>{this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${s} track`),e()}).then(()=>{try{t.addTrack(e,i)}catch(e){throw this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${s} track`),e}i.addTrack(e),rl.dispatchAddTrackEvent(i,e)}))},n=e.getAudioTracks();n.length&&s(n[0]);let o=e.getVideoTracks();return o.length&&s(o[0]),r.reduce((e,t)=>e.then(()=>t),Promise.resolve())}getLocalSessionDescription(){if(this.logger.debug("SessionDescriptionHandler.getLocalSessionDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));let e=this._peerConnection.localDescription;return e?Promise.resolve(e):Promise.reject(Error("Failed to get local session description"))}setLocalSessionDescription(e){return(this.logger.debug("SessionDescriptionHandler.setLocalSessionDescription"),void 0===this._peerConnection)?Promise.reject(Error("Peer connection closed.")):this._peerConnection.setLocalDescription(e)}setRemoteSessionDescription(e){let t;if(this.logger.debug("SessionDescriptionHandler.setRemoteSessionDescription"),void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));let i=e.sdp;switch(this._peerConnection.signalingState){case"stable":t="offer";break;case"have-local-offer":t="answer";break;default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}return i?this._peerConnection.setRemoteDescription({sdp:i,type:t}):(this.logger.error("SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp"),Promise.reject(Error("SDP is undefined")))}setRemoteTrack(e){this.logger.debug("SessionDescriptionHandler.setRemoteTrack");let t=this._remoteMediaStream;t.getTrackById(e.id)?this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${e.kind} track`):"audio"===e.kind?(this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${e.kind} track`),t.getAudioTracks().forEach(e=>{e.stop(),t.removeTrack(e),rl.dispatchRemoveTrackEvent(t,e)}),t.addTrack(e),rl.dispatchAddTrackEvent(t,e)):"video"===e.kind&&(this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${e.kind} track`),t.getVideoTracks().forEach(e=>{e.stop(),t.removeTrack(e),rl.dispatchRemoveTrackEvent(t,e)}),t.addTrack(e),rl.dispatchAddTrackEvent(t,e))}updateDirection(e){if(void 0===this._peerConnection)return Promise.reject(Error("Peer connection closed."));switch(this._peerConnection.signalingState){case"stable":this.logger.debug("SessionDescriptionHandler.updateDirection - setting offer direction");{let t=t=>{switch(t){case"inactive":case"recvonly":return e?.hold?"inactive":"recvonly";case"sendonly":case"sendrecv":return e?.hold?"sendonly":"sendrecv";case"stopped":return"stopped";default:throw Error("Should never happen")}};this._peerConnection.getTransceivers().forEach(e=>{if(e.direction){let i=t(e.direction);e.direction!==i&&(e.direction=i)}})}break;case"have-remote-offer":this.logger.debug("SessionDescriptionHandler.updateDirection - setting answer direction");{let t=(()=>{let e=this._peerConnection.remoteDescription;if(!e)throw Error("Failed to read remote offer");let t=/a=sendrecv\r\n|a=sendonly\r\n|a=recvonly\r\n|a=inactive\r\n/.exec(e.sdp);if(t)switch(t[0]){case"a=inactive\r\n":return"inactive";case"a=recvonly\r\n":return"recvonly";case"a=sendonly\r\n":return"sendonly";case"a=sendrecv\r\n":break;default:throw Error("Should never happen")}return"sendrecv"})(),i=(()=>{switch(t){case"inactive":return"inactive";case"recvonly":return"sendonly";case"sendonly":return e?.hold?"inactive":"recvonly";case"sendrecv":return e?.hold?"sendonly":"sendrecv";default:throw Error("Should never happen")}})();this._peerConnection.getTransceivers().forEach(e=>{e.direction&&"stopped"!==e.direction&&e.direction!==i&&(e.direction=i)})}break;default:return Promise.reject(Error("Invalid signaling state "+this._peerConnection.signalingState))}return Promise.resolve()}iceGatheringComplete(){this.logger.debug("SessionDescriptionHandler.iceGatheringComplete"),void 0!==this.iceGatheringCompleteTimeoutId&&(this.logger.debug("SessionDescriptionHandler.iceGatheringComplete - clearing timeout"),clearTimeout(this.iceGatheringCompleteTimeoutId),this.iceGatheringCompleteTimeoutId=void 0),void 0!==this.iceGatheringCompletePromise&&(this.logger.debug("SessionDescriptionHandler.iceGatheringComplete - resolving promise"),this.iceGatheringCompleteResolve?.(),this.iceGatheringCompletePromise=void 0,this.iceGatheringCompleteResolve=void 0,this.iceGatheringCompleteReject=void 0)}waitForIceGatheringComplete(e=!1,t=0){return(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete"),void 0===this._peerConnection)?Promise.reject(Error("Peer connection closed.")):e||"complete"!==this._peerConnection.iceGatheringState?(void 0!==this.iceGatheringCompletePromise&&(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise"),this.iceGatheringCompleteReject?.(Error("Promise superseded.")),this.iceGatheringCompletePromise=void 0,this.iceGatheringCompleteResolve=void 0,this.iceGatheringCompleteReject=void 0),this.iceGatheringCompletePromise=new Promise((e,i)=>{this.iceGatheringCompleteResolve=e,this.iceGatheringCompleteReject=i,t>0&&(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in "+t),this.iceGatheringCompleteTimeoutId=setTimeout(()=>{this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - timeout"),this.iceGatheringComplete()},t))}),this.iceGatheringCompletePromise):(this.logger.debug("SessionDescriptionHandler.waitForIceGatheringToComplete - already complete"),Promise.resolve())}initPeerConnectionEventHandlers(){if(this.logger.debug("SessionDescriptionHandler.initPeerConnectionEventHandlers"),!this._peerConnection)throw Error("Peer connection undefined.");let e=this._peerConnection;e.onconnectionstatechange=t=>{let i=e.connectionState;this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${i}`),this._peerConnectionDelegate?.onconnectionstatechange&&this._peerConnectionDelegate.onconnectionstatechange(t)},e.ondatachannel=e=>{this.logger.debug("SessionDescriptionHandler.ondatachannel"),this._dataChannel=e.channel,this.onDataChannel&&this.onDataChannel(this._dataChannel),this._peerConnectionDelegate?.ondatachannel&&this._peerConnectionDelegate.ondatachannel(e)},e.onicecandidate=e=>{this.logger.debug("SessionDescriptionHandler.onicecandidate"),this._peerConnectionDelegate?.onicecandidate&&this._peerConnectionDelegate.onicecandidate(e)},e.onicecandidateerror=e=>{this.logger.debug("SessionDescriptionHandler.onicecandidateerror"),this._peerConnectionDelegate?.onicecandidateerror&&this._peerConnectionDelegate.onicecandidateerror(e)},e.oniceconnectionstatechange=t=>{let i=e.iceConnectionState;this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${i}`),this._peerConnectionDelegate?.oniceconnectionstatechange&&this._peerConnectionDelegate.oniceconnectionstatechange(t)},e.onicegatheringstatechange=t=>{let i=e.iceGatheringState;this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${i}`),"complete"===i&&this.iceGatheringComplete(),this._peerConnectionDelegate?.onicegatheringstatechange&&this._peerConnectionDelegate.onicegatheringstatechange(t)},e.onnegotiationneeded=e=>{this.logger.debug("SessionDescriptionHandler.onnegotiationneeded"),this._peerConnectionDelegate?.onnegotiationneeded&&this._peerConnectionDelegate.onnegotiationneeded(e)},e.onsignalingstatechange=t=>{let i=e.signalingState;this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${i}`),this._peerConnectionDelegate?.onsignalingstatechange&&this._peerConnectionDelegate.onsignalingstatechange(t)},e.ontrack=e=>{let t=e.track.kind,i=e.track.enabled?"enabled":"disabled";this.logger.debug(`SessionDescriptionHandler.ontrack ${t} ${i}`),this.setRemoteTrack(e.track),this._peerConnectionDelegate?.ontrack&&this._peerConnectionDelegate.ontrack(e)}}}const rd=(e,t)=>{let i={iceGatheringTimeout:t?.iceGatheringTimeout!==void 0?t?.iceGatheringTimeout:5e3,enableDscp:t.enableDscp,peerConnectionConfiguration:{bundlePolicy:"balanced",certificates:void 0,iceCandidatePoolSize:0,iceServers:[{urls:"stun:stun.l.google.com:19302"}],iceTransportPolicy:"all",rtcpMuxPolicy:"require",...t?.peerConnectionConfiguration}};return new rl(e.userAgent.getLogger("sip.SessionDescriptionHandler"),e=>e.audio||e.video?void 0===navigator.mediaDevices?Promise.reject(Error("Media devices not available in insecure contexts.")):navigator.mediaDevices.getUserMedia(e):Promise.resolve(new MediaStream),i)},rh=_(JSON.parse('{"name":"ringcentral-web-phone","version":"1.0.3","homepage":"https://github.com/ringcentral/ringcentral-web-phone","bugs":{"url":"https://github.com/ringcentral/ringcentral-web-phone/issues"},"repository":{"type":"git","url":"git://github.com/ringcentral/ringcentral-web-phone.git"},"license":"MIT","author":{"name":"RingCentral, Inc.","email":"devsupport@ringcentral.com"},"contributors":[{"name":"Kirill Konshin"},{"name":"Elias Sun"},{"name":"Vyshakh Babji"},{"name":"Yatin Gera"},{"name":"Tyler Liu"},{"name":"Embbnux Ji"}],"main":"./lib/src/index.js","types":"./lib/src/index.d.ts","scripts":{"build":"rm -rf lib && yarn tsc && rm -rf docs && parcel build demo/index.html demo/callback.html --dist-dir docs --public-url ./","lint":"eslint --fix \'**/*.{ts,tsx,js,jsx}\' && prettier --write . && sort-package-json","serve":"rm -rf .parcel-cache && parcel demo/index.html demo/callback.html --dist-dir docs","test":"jest 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diff --git a/docs/index.5edd3872.js.map b/docs/index.5edd3872.js.map
new file mode 100644
index 0000000..ff321dc
--- /dev/null
+++ b/docs/index.5edd3872.js.map
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eslint-disable max-params */ /* eslint-disable max-nested-callbacks */ var $4eae0a726ab50395$exports = {};\n/*!\n * jQuery JavaScript Library v3.7.1\n * https://jquery.com/\n *\n * Copyright OpenJS Foundation and other contributors\n * Released under the MIT license\n * https://jquery.org/license\n *\n * Date: 2023-08-28T13:37Z\n */ (function(global, factory) {\n    \"use strict\";\n    if (typeof $4eae0a726ab50395$exports === \"object\") // For CommonJS and CommonJS-like environments where a proper `window`\n    // is present, execute the factory and get jQuery.\n    // For environments that do not have a `window` with a `document`\n    // (such as Node.js), expose a factory as module.exports.\n    // This accentuates the need for the creation of a real `window`.\n    // e.g. var jQuery = require(\"jquery\")(window);\n    // See ticket trac-14549 for more info.\n    $4eae0a726ab50395$exports = global.document ? factory(global, true) : function(w) {\n        if (!w.document) throw new Error(\"jQuery requires a window with a document\");\n        return factory(w);\n    };\n    else factory(global);\n// Pass this if window is not defined yet\n})(typeof window !== \"undefined\" ? window : $4eae0a726ab50395$exports, function(window1, noGlobal) {\n    // Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1\n    // throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode\n    // arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common\n    // enough that all such attempts are guarded in a try block.\n    \"use strict\";\n    var arr = [];\n    var getProto = Object.getPrototypeOf;\n    var slice = arr.slice;\n    var flat = arr.flat ? function(array) {\n        return arr.flat.call(array);\n    } : function(array) {\n        return arr.concat.apply([], array);\n    };\n    var push = arr.push;\n    var indexOf = arr.indexOf;\n    var class2type = {};\n    var toString = class2type.toString;\n    var hasOwn = class2type.hasOwnProperty;\n    var fnToString = hasOwn.toString;\n    var ObjectFunctionString = fnToString.call(Object);\n    var support = {};\n    var isFunction = function isFunction(obj) {\n        // Support: Chrome <=57, Firefox <=52\n        // In some browsers, typeof returns \"function\" for HTML <object> elements\n        // (i.e., `typeof document.createElement( \"object\" ) === \"function\"`).\n        // We don't want to classify *any* DOM node as a function.\n        // Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5\n        // Plus for old WebKit, typeof returns \"function\" for HTML collections\n        // (e.g., `typeof document.getElementsByTagName(\"div\") === \"function\"`). (gh-4756)\n        return typeof obj === \"function\" && typeof obj.nodeType !== \"number\" && typeof obj.item !== \"function\";\n    };\n    var isWindow = function isWindow(obj) {\n        return obj != null && obj === obj.window;\n    };\n    var document = window1.document;\n    var preservedScriptAttributes = {\n        type: true,\n        src: true,\n        nonce: true,\n        noModule: true\n    };\n    function DOMEval(code, node, doc) {\n        doc = doc || document;\n        var i, val, script = doc.createElement(\"script\");\n        script.text = code;\n        if (node) for(i in preservedScriptAttributes){\n            // Support: Firefox 64+, Edge 18+\n            // Some browsers don't support the \"nonce\" property on scripts.\n            // On the other hand, just using `getAttribute` is not enough as\n            // the `nonce` attribute is reset to an empty string whenever it\n            // becomes browsing-context connected.\n            // See https://github.com/whatwg/html/issues/2369\n            // See https://html.spec.whatwg.org/#nonce-attributes\n            // The `node.getAttribute` check was added for the sake of\n            // `jQuery.globalEval` so that it can fake a nonce-containing node\n            // via an object.\n            val = node[i] || node.getAttribute && node.getAttribute(i);\n            if (val) script.setAttribute(i, val);\n        }\n        doc.head.appendChild(script).parentNode.removeChild(script);\n    }\n    function toType(obj) {\n        if (obj == null) return obj + \"\";\n        // Support: Android <=2.3 only (functionish RegExp)\n        return typeof obj === \"object\" || typeof obj === \"function\" ? class2type[toString.call(obj)] || \"object\" : typeof obj;\n    }\n    /* global Symbol */ // Defining this global in .eslintrc.json would create a danger of using the global\n    // unguarded in another place, it seems safer to define global only for this module\n    var version = \"3.7.1\", rhtmlSuffix = /HTML$/i, // Define a local copy of jQuery\n    jQuery = function(selector, context) {\n        // The jQuery object is actually just the init constructor 'enhanced'\n        // Need init if jQuery is called (just allow error to be thrown if not included)\n        return new jQuery.fn.init(selector, context);\n    };\n    jQuery.fn = jQuery.prototype = {\n        // The current version of jQuery being used\n        jquery: version,\n        constructor: jQuery,\n        // The default length of a jQuery object is 0\n        length: 0,\n        toArray: function() {\n            return slice.call(this);\n        },\n        // Get the Nth element in the matched element set OR\n        // Get the whole matched element set as a clean array\n        get: function(num) {\n            // Return all the elements in a clean array\n            if (num == null) return slice.call(this);\n            // Return just the one element from the set\n            return num < 0 ? this[num + this.length] : this[num];\n        },\n        // Take an array of elements and push it onto the stack\n        // (returning the new matched element set)\n        pushStack: function(elems) {\n            // Build a new jQuery matched element set\n            var ret = jQuery.merge(this.constructor(), elems);\n            // Add the old object onto the stack (as a reference)\n            ret.prevObject = this;\n            // Return the newly-formed element set\n            return ret;\n        },\n        // Execute a callback for every element in the matched set.\n        each: function(callback) {\n            return jQuery.each(this, callback);\n        },\n        map: function(callback) {\n            return this.pushStack(jQuery.map(this, function(elem, i) {\n                return callback.call(elem, i, elem);\n            }));\n        },\n        slice: function() {\n            return this.pushStack(slice.apply(this, arguments));\n        },\n        first: function() {\n            return this.eq(0);\n        },\n        last: function() {\n            return this.eq(-1);\n        },\n        even: function() {\n            return this.pushStack(jQuery.grep(this, function(_elem, i) {\n                return (i + 1) % 2;\n            }));\n        },\n        odd: function() {\n            return this.pushStack(jQuery.grep(this, function(_elem, i) {\n                return i % 2;\n            }));\n        },\n        eq: function(i) {\n            var len = this.length, j = +i + (i < 0 ? len : 0);\n            return this.pushStack(j >= 0 && j < len ? [\n                this[j]\n            ] : []);\n        },\n        end: function() {\n            return this.prevObject || this.constructor();\n        },\n        // For internal use only.\n        // Behaves like an Array's method, not like a jQuery method.\n        push: push,\n        sort: arr.sort,\n        splice: arr.splice\n    };\n    jQuery.extend = jQuery.fn.extend = function() {\n        var options, name, src, copy, copyIsArray, clone, target = arguments[0] || {}, i = 1, length = arguments.length, deep = false;\n        // Handle a deep copy situation\n        if (typeof target === \"boolean\") {\n            deep = target;\n            // Skip the boolean and the target\n            target = arguments[i] || {};\n            i++;\n        }\n        // Handle case when target is a string or something (possible in deep copy)\n        if (typeof target !== \"object\" && !isFunction(target)) target = {};\n        // Extend jQuery itself if only one argument is passed\n        if (i === length) {\n            target = this;\n            i--;\n        }\n        for(; i < length; i++){\n            // Only deal with non-null/undefined values\n            if ((options = arguments[i]) != null) // Extend the base object\n            for(name in options){\n                copy = options[name];\n                // Prevent Object.prototype pollution\n                // Prevent never-ending loop\n                if (name === \"__proto__\" || target === copy) continue;\n                // Recurse if we're merging plain objects or arrays\n                if (deep && copy && (jQuery.isPlainObject(copy) || (copyIsArray = Array.isArray(copy)))) {\n                    src = target[name];\n                    // Ensure proper type for the source value\n                    if (copyIsArray && !Array.isArray(src)) clone = [];\n                    else if (!copyIsArray && !jQuery.isPlainObject(src)) clone = {};\n                    else clone = src;\n                    copyIsArray = false;\n                    // Never move original objects, clone them\n                    target[name] = jQuery.extend(deep, clone, copy);\n                // Don't bring in undefined values\n                } else if (copy !== undefined) target[name] = copy;\n            }\n        }\n        // Return the modified object\n        return target;\n    };\n    jQuery.extend({\n        // Unique for each copy of jQuery on the page\n        expando: \"jQuery\" + (version + Math.random()).replace(/\\D/g, \"\"),\n        // Assume jQuery is ready without the ready module\n        isReady: true,\n        error: function(msg) {\n            throw new Error(msg);\n        },\n        noop: function() {},\n        isPlainObject: function(obj) {\n            var proto, Ctor;\n            // Detect obvious negatives\n            // Use toString instead of jQuery.type to catch host objects\n            if (!obj || toString.call(obj) !== \"[object Object]\") return false;\n            proto = getProto(obj);\n            // Objects with no prototype (e.g., `Object.create( null )`) are plain\n            if (!proto) return true;\n            // Objects with prototype are plain iff they were constructed by a global Object function\n            Ctor = hasOwn.call(proto, \"constructor\") && proto.constructor;\n            return typeof Ctor === \"function\" && fnToString.call(Ctor) === ObjectFunctionString;\n        },\n        isEmptyObject: function(obj) {\n            var name;\n            for(name in obj)return false;\n            return true;\n        },\n        // Evaluates a script in a provided context; falls back to the global one\n        // if not specified.\n        globalEval: function(code, options, doc) {\n            DOMEval(code, {\n                nonce: options && options.nonce\n            }, doc);\n        },\n        each: function(obj, callback) {\n            var length, i = 0;\n            if (isArrayLike(obj)) {\n                length = obj.length;\n                for(; i < length; i++){\n                    if (callback.call(obj[i], i, obj[i]) === false) break;\n                }\n            } else for(i in obj){\n                if (callback.call(obj[i], i, obj[i]) === false) break;\n            }\n            return obj;\n        },\n        // Retrieve the text value of an array of DOM nodes\n        text: function(elem) {\n            var node, ret = \"\", i = 0, nodeType = elem.nodeType;\n            if (!nodeType) // If no nodeType, this is expected to be an array\n            while(node = elem[i++])// Do not traverse comment nodes\n            ret += jQuery.text(node);\n            if (nodeType === 1 || nodeType === 11) return elem.textContent;\n            if (nodeType === 9) return elem.documentElement.textContent;\n            if (nodeType === 3 || nodeType === 4) return elem.nodeValue;\n            // Do not include comment or processing instruction nodes\n            return ret;\n        },\n        // results is for internal usage only\n        makeArray: function(arr, results) {\n            var ret = results || [];\n            if (arr != null) {\n                if (isArrayLike(Object(arr))) jQuery.merge(ret, typeof arr === \"string\" ? [\n                    arr\n                ] : arr);\n                else push.call(ret, arr);\n            }\n            return ret;\n        },\n        inArray: function(elem, arr, i) {\n            return arr == null ? -1 : indexOf.call(arr, elem, i);\n        },\n        isXMLDoc: function(elem) {\n            var namespace = elem && elem.namespaceURI, docElem = elem && (elem.ownerDocument || elem).documentElement;\n            // Assume HTML when documentElement doesn't yet exist, such as inside\n            // document fragments.\n            return !rhtmlSuffix.test(namespace || docElem && docElem.nodeName || \"HTML\");\n        },\n        // Support: Android <=4.0 only, PhantomJS 1 only\n        // push.apply(_, arraylike) throws on ancient WebKit\n        merge: function(first, second) {\n            var len = +second.length, j = 0, i = first.length;\n            for(; j < len; j++)first[i++] = second[j];\n            first.length = i;\n            return first;\n        },\n        grep: function(elems, callback, invert) {\n            var callbackInverse, matches = [], i = 0, length = elems.length, callbackExpect = !invert;\n            // Go through the array, only saving the items\n            // that pass the validator function\n            for(; i < length; i++){\n                callbackInverse = !callback(elems[i], i);\n                if (callbackInverse !== callbackExpect) matches.push(elems[i]);\n            }\n            return matches;\n        },\n        // arg is for internal usage only\n        map: function(elems, callback, arg) {\n            var length, value, i = 0, ret = [];\n            // Go through the array, translating each of the items to their new values\n            if (isArrayLike(elems)) {\n                length = elems.length;\n                for(; i < length; i++){\n                    value = callback(elems[i], i, arg);\n                    if (value != null) ret.push(value);\n                }\n            // Go through every key on the object,\n            } else for(i in elems){\n                value = callback(elems[i], i, arg);\n                if (value != null) ret.push(value);\n            }\n            // Flatten any nested arrays\n            return flat(ret);\n        },\n        // A global GUID counter for objects\n        guid: 1,\n        // jQuery.support is not used in Core but other projects attach their\n        // properties to it so it needs to exist.\n        support: support\n    });\n    if (typeof Symbol === \"function\") jQuery.fn[Symbol.iterator] = arr[Symbol.iterator];\n    // Populate the class2type map\n    jQuery.each(\"Boolean Number String Function Array Date RegExp Object Error Symbol\".split(\" \"), function(_i, name) {\n        class2type[\"[object \" + name + \"]\"] = name.toLowerCase();\n    });\n    function isArrayLike(obj) {\n        // Support: real iOS 8.2 only (not reproducible in simulator)\n        // `in` check used to prevent JIT error (gh-2145)\n        // hasOwn isn't used here due to false negatives\n        // regarding Nodelist length in IE\n        var length = !!obj && \"length\" in obj && obj.length, type = toType(obj);\n        if (isFunction(obj) || isWindow(obj)) return false;\n        return type === \"array\" || length === 0 || typeof length === \"number\" && length > 0 && length - 1 in obj;\n    }\n    function nodeName(elem, name) {\n        return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n    }\n    var pop = arr.pop;\n    var sort = arr.sort;\n    var splice = arr.splice;\n    var whitespace = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\";\n    var rtrimCSS = new RegExp(\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\", \"g\");\n    // Note: an element does not contain itself\n    jQuery.contains = function(a, b) {\n        var bup = b && b.parentNode;\n        return a === bup || !!(bup && bup.nodeType === 1 && // Support: IE 9 - 11+\n        // IE doesn't have `contains` on SVG.\n        (a.contains ? a.contains(bup) : a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16));\n    };\n    // CSS string/identifier serialization\n    // https://drafts.csswg.org/cssom/#common-serializing-idioms\n    var rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\x80-\\uFFFF\\w-]/g;\n    function fcssescape(ch, asCodePoint) {\n        if (asCodePoint) {\n            // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n            if (ch === \"\\0\") return \"\\uFFFD\";\n            // Control characters and (dependent upon position) numbers get escaped as code points\n            return ch.slice(0, -1) + \"\\\\\" + ch.charCodeAt(ch.length - 1).toString(16) + \" \";\n        }\n        // Other potentially-special ASCII characters get backslash-escaped\n        return \"\\\\\" + ch;\n    }\n    jQuery.escapeSelector = function(sel) {\n        return (sel + \"\").replace(rcssescape, fcssescape);\n    };\n    var preferredDoc = document, pushNative = push;\n    (function() {\n        var i, Expr, outermostContext, sortInput, hasDuplicate, push = pushNative, // Local document vars\n        document, documentElement, documentIsHTML, rbuggyQSA, matches, // Instance-specific data\n        expando = jQuery.expando, dirruns = 0, done = 0, classCache = createCache(), tokenCache = createCache(), compilerCache = createCache(), nonnativeSelectorCache = createCache(), sortOrder = function(a, b) {\n            if (a === b) hasDuplicate = true;\n            return 0;\n        }, booleans = \"checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped\", // Regular expressions\n        // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram\n        identifier = \"(?:\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace + \"?|\\\\\\\\[^\\\\r\\\\n\\\\f]|[\\\\w-]|[^\\0-\\\\x7f])+\", // Attribute selectors: https://www.w3.org/TR/selectors/#attribute-selectors\n        attributes = \"\\\\[\" + whitespace + \"*(\" + identifier + \")(?:\" + whitespace + // Operator (capture 2)\n        \"*([*^$|!~]?=)\" + whitespace + // \"Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]\"\n        \"*(?:'((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\"|(\" + identifier + \"))|)\" + whitespace + \"*\\\\]\", pseudos = \":(\" + identifier + \")(?:\\\\((\" + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n        // 1. quoted (capture 3; capture 4 or capture 5)\n        \"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" + // 2. simple (capture 6)\n        \"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" + // 3. anything else (capture 2)\n        \".*\" + \")\\\\)|)\", // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n        rwhitespace = new RegExp(whitespace + \"+\", \"g\"), rcomma = new RegExp(\"^\" + whitespace + \"*,\" + whitespace + \"*\"), rleadingCombinator = new RegExp(\"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" + whitespace + \"*\"), rdescend = new RegExp(whitespace + \"|>\"), rpseudo = new RegExp(pseudos), ridentifier = new RegExp(\"^\" + identifier + \"$\"), matchExpr = {\n            ID: new RegExp(\"^#(\" + identifier + \")\"),\n            CLASS: new RegExp(\"^\\\\.(\" + identifier + \")\"),\n            TAG: new RegExp(\"^(\" + identifier + \"|[*])\"),\n            ATTR: new RegExp(\"^\" + attributes),\n            PSEUDO: new RegExp(\"^\" + pseudos),\n            CHILD: new RegExp(\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" + whitespace + \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" + whitespace + \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\"),\n            bool: new RegExp(\"^(?:\" + booleans + \")$\", \"i\"),\n            // For use in libraries implementing .is()\n            // We use this for POS matching in `select`\n            needsContext: new RegExp(\"^\" + whitespace + \"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" + whitespace + \"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\")\n        }, rinputs = /^(?:input|select|textarea|button)$/i, rheader = /^h\\d$/i, // Easily-parseable/retrievable ID or TAG or CLASS selectors\n        rquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/, rsibling = /[+~]/, // CSS escapes\n        // https://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n        runescape = new RegExp(\"\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace + \"?|\\\\\\\\([^\\\\r\\\\n\\\\f])\", \"g\"), funescape = function(escape, nonHex) {\n            var high = \"0x\" + escape.slice(1) - 0x10000;\n            if (nonHex) // Strip the backslash prefix from a non-hex escape sequence\n            return nonHex;\n            // Replace a hexadecimal escape sequence with the encoded Unicode code point\n            // Support: IE <=11+\n            // For values outside the Basic Multilingual Plane (BMP), manually construct a\n            // surrogate pair\n            return high < 0 ? String.fromCharCode(high + 0x10000) : String.fromCharCode(high >> 10 | 0xD800, high & 0x3FF | 0xDC00);\n        }, // Used for iframes; see `setDocument`.\n        // Support: IE 9 - 11+, Edge 12 - 18+\n        // Removing the function wrapper causes a \"Permission Denied\"\n        // error in IE/Edge.\n        unloadHandler = function() {\n            setDocument();\n        }, inDisabledFieldset = addCombinator(function(elem) {\n            return elem.disabled === true && nodeName(elem, \"fieldset\");\n        }, {\n            dir: \"parentNode\",\n            next: \"legend\"\n        });\n        // Support: IE <=9 only\n        // Accessing document.activeElement can throw unexpectedly\n        // https://bugs.jquery.com/ticket/13393\n        function safeActiveElement() {\n            try {\n                return document.activeElement;\n            } catch (err) {}\n        }\n        // Optimize for push.apply( _, NodeList )\n        try {\n            push.apply(arr = slice.call(preferredDoc.childNodes), preferredDoc.childNodes);\n            // Support: Android <=4.0\n            // Detect silently failing push.apply\n            // eslint-disable-next-line no-unused-expressions\n            arr[preferredDoc.childNodes.length].nodeType;\n        } catch (e) {\n            push = {\n                apply: function(target, els) {\n                    pushNative.apply(target, slice.call(els));\n                },\n                call: function(target) {\n                    pushNative.apply(target, slice.call(arguments, 1));\n                }\n            };\n        }\n        function find(selector, context, results, seed) {\n            var m, i, elem, nid, match, groups, newSelector, newContext = context && context.ownerDocument, // nodeType defaults to 9, since context defaults to document\n            nodeType = context ? context.nodeType : 9;\n            results = results || [];\n            // Return early from calls with invalid selector or context\n            if (typeof selector !== \"string\" || !selector || nodeType !== 1 && nodeType !== 9 && nodeType !== 11) return results;\n            // Try to shortcut find operations (as opposed to filters) in HTML documents\n            if (!seed) {\n                setDocument(context);\n                context = context || document;\n                if (documentIsHTML) {\n                    // If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n                    // (excepting DocumentFragment context, where the methods don't exist)\n                    if (nodeType !== 11 && (match = rquickExpr.exec(selector))) {\n                        // ID selector\n                        if (m = match[1]) {\n                            // Document context\n                            if (nodeType === 9) {\n                                if (elem = context.getElementById(m)) // Support: IE 9 only\n                                // getElementById can match elements by name instead of ID\n                                {\n                                    if (elem.id === m) {\n                                        push.call(results, elem);\n                                        return results;\n                                    }\n                                } else return results;\n                            // Element context\n                            } else // Support: IE 9 only\n                            // getElementById can match elements by name instead of ID\n                            if (newContext && (elem = newContext.getElementById(m)) && find.contains(context, elem) && elem.id === m) {\n                                push.call(results, elem);\n                                return results;\n                            }\n                        // Type selector\n                        } else if (match[2]) {\n                            push.apply(results, context.getElementsByTagName(selector));\n                            return results;\n                        // Class selector\n                        } else if ((m = match[3]) && context.getElementsByClassName) {\n                            push.apply(results, context.getElementsByClassName(m));\n                            return results;\n                        }\n                    }\n                    // Take advantage of querySelectorAll\n                    if (!nonnativeSelectorCache[selector + \" \"] && (!rbuggyQSA || !rbuggyQSA.test(selector))) {\n                        newSelector = selector;\n                        newContext = context;\n                        // qSA considers elements outside a scoping root when evaluating child or\n                        // descendant combinators, which is not what we want.\n                        // In such cases, we work around the behavior by prefixing every selector in the\n                        // list with an ID selector referencing the scope context.\n                        // The technique has to be used as well when a leading combinator is used\n                        // as such selectors are not recognized by querySelectorAll.\n                        // Thanks to Andrew Dupont for this technique.\n                        if (nodeType === 1 && (rdescend.test(selector) || rleadingCombinator.test(selector))) {\n                            // Expand context for sibling selectors\n                            newContext = rsibling.test(selector) && testContext(context.parentNode) || context;\n                            // We can use :scope instead of the ID hack if the browser\n                            // supports it & if we're not changing the context.\n                            // Support: IE 11+, Edge 17 - 18+\n                            // IE/Edge sometimes throw a \"Permission denied\" error when\n                            // strict-comparing two documents; shallow comparisons work.\n                            // eslint-disable-next-line eqeqeq\n                            if (newContext != context || !support.scope) {\n                                // Capture the context ID, setting it first if necessary\n                                if (nid = context.getAttribute(\"id\")) nid = jQuery.escapeSelector(nid);\n                                else context.setAttribute(\"id\", nid = expando);\n                            }\n                            // Prefix every selector in the list\n                            groups = tokenize(selector);\n                            i = groups.length;\n                            while(i--)groups[i] = (nid ? \"#\" + nid : \":scope\") + \" \" + toSelector(groups[i]);\n                            newSelector = groups.join(\",\");\n                        }\n                        try {\n                            push.apply(results, newContext.querySelectorAll(newSelector));\n                            return results;\n                        } catch (qsaError) {\n                            nonnativeSelectorCache(selector, true);\n                        } finally{\n                            if (nid === expando) context.removeAttribute(\"id\");\n                        }\n                    }\n                }\n            }\n            // All others\n            return select(selector.replace(rtrimCSS, \"$1\"), context, results, seed);\n        }\n        /**\n * Create key-value caches of limited size\n * @returns {function(string, object)} Returns the Object data after storing it on itself with\n *\tproperty name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n *\tdeleting the oldest entry\n */ function createCache() {\n            var keys = [];\n            function cache(key, value) {\n                // Use (key + \" \") to avoid collision with native prototype properties\n                // (see https://github.com/jquery/sizzle/issues/157)\n                if (keys.push(key + \" \") > Expr.cacheLength) // Only keep the most recent entries\n                delete cache[keys.shift()];\n                return cache[key + \" \"] = value;\n            }\n            return cache;\n        }\n        /**\n * Mark a function for special use by jQuery selector module\n * @param {Function} fn The function to mark\n */ function markFunction(fn) {\n            fn[expando] = true;\n            return fn;\n        }\n        /**\n * Support testing using an element\n * @param {Function} fn Passed the created element and returns a boolean result\n */ function assert(fn) {\n            var el = document.createElement(\"fieldset\");\n            try {\n                return !!fn(el);\n            } catch (e) {\n                return false;\n            } finally{\n                // Remove from its parent by default\n                if (el.parentNode) el.parentNode.removeChild(el);\n                // release memory in IE\n                el = null;\n            }\n        }\n        /**\n * Returns a function to use in pseudos for input types\n * @param {String} type\n */ function createInputPseudo(type) {\n            return function(elem) {\n                return nodeName(elem, \"input\") && elem.type === type;\n            };\n        }\n        /**\n * Returns a function to use in pseudos for buttons\n * @param {String} type\n */ function createButtonPseudo(type) {\n            return function(elem) {\n                return (nodeName(elem, \"input\") || nodeName(elem, \"button\")) && elem.type === type;\n            };\n        }\n        /**\n * Returns a function to use in pseudos for :enabled/:disabled\n * @param {Boolean} disabled true for :disabled; false for :enabled\n */ function createDisabledPseudo(disabled) {\n            // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n            return function(elem) {\n                // Only certain elements can match :enabled or :disabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n                if (\"form\" in elem) {\n                    // Check for inherited disabledness on relevant non-disabled elements:\n                    // * listed form-associated elements in a disabled fieldset\n                    //   https://html.spec.whatwg.org/multipage/forms.html#category-listed\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n                    // * option elements in a disabled optgroup\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n                    // All such elements have a \"form\" property.\n                    if (elem.parentNode && elem.disabled === false) {\n                        // Option elements defer to a parent optgroup if present\n                        if (\"label\" in elem) {\n                            if (\"label\" in elem.parentNode) return elem.parentNode.disabled === disabled;\n                            else return elem.disabled === disabled;\n                        }\n                        // Support: IE 6 - 11+\n                        // Use the isDisabled shortcut property to check for disabled fieldset ancestors\n                        return elem.isDisabled === disabled || // Where there is no isDisabled, check manually\n                        elem.isDisabled !== !disabled && inDisabledFieldset(elem) === disabled;\n                    }\n                    return elem.disabled === disabled;\n                // Try to winnow out elements that can't be disabled before trusting the disabled property.\n                // Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n                // even exist on them, let alone have a boolean value.\n                } else if (\"label\" in elem) return elem.disabled === disabled;\n                // Remaining elements are neither :enabled nor :disabled\n                return false;\n            };\n        }\n        /**\n * Returns a function to use in pseudos for positionals\n * @param {Function} fn\n */ function createPositionalPseudo(fn) {\n            return markFunction(function(argument) {\n                argument = +argument;\n                return markFunction(function(seed, matches) {\n                    var j, matchIndexes = fn([], seed.length, argument), i = matchIndexes.length;\n                    // Match elements found at the specified indexes\n                    while(i--)if (seed[j = matchIndexes[i]]) seed[j] = !(matches[j] = seed[j]);\n                });\n            });\n        }\n        /**\n * Checks a node for validity as a jQuery selector context\n * @param {Element|Object=} context\n * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n */ function testContext(context) {\n            return context && typeof context.getElementsByTagName !== \"undefined\" && context;\n        }\n        /**\n * Sets document-related variables once based on the current document\n * @param {Element|Object} [node] An element or document object to use to set the document\n * @returns {Object} Returns the current document\n */ function setDocument(node) {\n            var subWindow, doc = node ? node.ownerDocument || node : preferredDoc;\n            // Return early if doc is invalid or already selected\n            // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            if (doc == document || doc.nodeType !== 9 || !doc.documentElement) return document;\n            // Update global variables\n            document = doc;\n            documentElement = document.documentElement;\n            documentIsHTML = !jQuery.isXMLDoc(document);\n            // Support: iOS 7 only, IE 9 - 11+\n            // Older browsers didn't support unprefixed `matches`.\n            matches = documentElement.matches || documentElement.webkitMatchesSelector || documentElement.msMatchesSelector;\n            // Support: IE 9 - 11+, Edge 12 - 18+\n            // Accessing iframe documents after unload throws \"permission denied\" errors\n            // (see trac-13936).\n            // Limit the fix to IE & Edge Legacy; despite Edge 15+ implementing `matches`,\n            // all IE 9+ and Edge Legacy versions implement `msMatchesSelector` as well.\n            if (documentElement.msMatchesSelector && // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            preferredDoc != document && (subWindow = document.defaultView) && subWindow.top !== subWindow) // Support: IE 9 - 11+, Edge 12 - 18+\n            subWindow.addEventListener(\"unload\", unloadHandler);\n            // Support: IE <10\n            // Check if getElementById returns elements by name\n            // The broken getElementById methods don't pick up programmatically-set names,\n            // so use a roundabout getElementsByName test\n            support.getById = assert(function(el) {\n                documentElement.appendChild(el).id = jQuery.expando;\n                return !document.getElementsByName || !document.getElementsByName(jQuery.expando).length;\n            });\n            // Support: IE 9 only\n            // Check to see if it's possible to do matchesSelector\n            // on a disconnected node.\n            support.disconnectedMatch = assert(function(el) {\n                return matches.call(el, \"*\");\n            });\n            // Support: IE 9 - 11+, Edge 12 - 18+\n            // IE/Edge don't support the :scope pseudo-class.\n            support.scope = assert(function() {\n                return document.querySelectorAll(\":scope\");\n            });\n            // Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only\n            // Make sure the `:has()` argument is parsed unforgivingly.\n            // We include `*` in the test to detect buggy implementations that are\n            // _selectively_ forgiving (specifically when the list includes at least\n            // one valid selector).\n            // Note that we treat complete lack of support for `:has()` as if it were\n            // spec-compliant support, which is fine because use of `:has()` in such\n            // environments will fail in the qSA path and fall back to jQuery traversal\n            // anyway.\n            support.cssHas = assert(function() {\n                try {\n                    document.querySelector(\":has(*,:jqfake)\");\n                    return false;\n                } catch (e) {\n                    return true;\n                }\n            });\n            // ID filter and find\n            if (support.getById) {\n                Expr.filter.ID = function(id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function(elem) {\n                        return elem.getAttribute(\"id\") === attrId;\n                    };\n                };\n                Expr.find.ID = function(id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var elem = context.getElementById(id);\n                        return elem ? [\n                            elem\n                        ] : [];\n                    }\n                };\n            } else {\n                Expr.filter.ID = function(id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function(elem) {\n                        var node = typeof elem.getAttributeNode !== \"undefined\" && elem.getAttributeNode(\"id\");\n                        return node && node.value === attrId;\n                    };\n                };\n                // Support: IE 6 - 7 only\n                // getElementById is not reliable as a find shortcut\n                Expr.find.ID = function(id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var node, i, elems, elem = context.getElementById(id);\n                        if (elem) {\n                            // Verify the id attribute\n                            node = elem.getAttributeNode(\"id\");\n                            if (node && node.value === id) return [\n                                elem\n                            ];\n                            // Fall back on getElementsByName\n                            elems = context.getElementsByName(id);\n                            i = 0;\n                            while(elem = elems[i++]){\n                                node = elem.getAttributeNode(\"id\");\n                                if (node && node.value === id) return [\n                                    elem\n                                ];\n                            }\n                        }\n                        return [];\n                    }\n                };\n            }\n            // Tag\n            Expr.find.TAG = function(tag, context) {\n                if (typeof context.getElementsByTagName !== \"undefined\") return context.getElementsByTagName(tag);\n                else return context.querySelectorAll(tag);\n            };\n            // Class\n            Expr.find.CLASS = function(className, context) {\n                if (typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML) return context.getElementsByClassName(className);\n            };\n            /* QSA/matchesSelector\n\t---------------------------------------------------------------------- */ // QSA and matchesSelector support\n            rbuggyQSA = [];\n            // Build QSA regex\n            // Regex strategy adopted from Diego Perini\n            assert(function(el) {\n                var input;\n                documentElement.appendChild(el).innerHTML = \"<a id='\" + expando + \"' href='' disabled='disabled'></a>\" + \"<select id='\" + expando + \"-\\r\\\\' disabled='disabled'>\" + \"<option selected=''></option></select>\";\n                // Support: iOS <=7 - 8 only\n                // Boolean attributes and \"value\" are not treated correctly in some XML documents\n                if (!el.querySelectorAll(\"[selected]\").length) rbuggyQSA.push(\"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\");\n                // Support: iOS <=7 - 8 only\n                if (!el.querySelectorAll(\"[id~=\" + expando + \"-]\").length) rbuggyQSA.push(\"~=\");\n                // Support: iOS 8 only\n                // https://bugs.webkit.org/show_bug.cgi?id=136851\n                // In-page `selector#id sibling-combinator selector` fails\n                if (!el.querySelectorAll(\"a#\" + expando + \"+*\").length) rbuggyQSA.push(\".#.+[+~]\");\n                // Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n                // In some of the document kinds, these selectors wouldn't work natively.\n                // This is probably OK but for backwards compatibility we want to maintain\n                // handling them through jQuery traversal in jQuery 3.x.\n                if (!el.querySelectorAll(\":checked\").length) rbuggyQSA.push(\":checked\");\n                // Support: Windows 8 Native Apps\n                // The type and name attributes are restricted during .innerHTML assignment\n                input = document.createElement(\"input\");\n                input.setAttribute(\"type\", \"hidden\");\n                el.appendChild(input).setAttribute(\"name\", \"D\");\n                // Support: IE 9 - 11+\n                // IE's :disabled selector does not pick up the children of disabled fieldsets\n                // Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n                // In some of the document kinds, these selectors wouldn't work natively.\n                // This is probably OK but for backwards compatibility we want to maintain\n                // handling them through jQuery traversal in jQuery 3.x.\n                documentElement.appendChild(el).disabled = true;\n                if (el.querySelectorAll(\":disabled\").length !== 2) rbuggyQSA.push(\":enabled\", \":disabled\");\n                // Support: IE 11+, Edge 15 - 18+\n                // IE 11/Edge don't find elements on a `[name='']` query in some cases.\n                // Adding a temporary attribute to the document before the selection works\n                // around the issue.\n                // Interestingly, IE 10 & older don't seem to have the issue.\n                input = document.createElement(\"input\");\n                input.setAttribute(\"name\", \"\");\n                el.appendChild(input);\n                if (!el.querySelectorAll(\"[name='']\").length) rbuggyQSA.push(\"\\\\[\" + whitespace + \"*name\" + whitespace + \"*=\" + whitespace + \"*(?:''|\\\"\\\")\");\n            });\n            if (!support.cssHas) // Support: Chrome 105 - 110+, Safari 15.4 - 16.3+\n            // Our regular `try-catch` mechanism fails to detect natively-unsupported\n            // pseudo-classes inside `:has()` (such as `:has(:contains(\"Foo\"))`)\n            // in browsers that parse the `:has()` argument as a forgiving selector list.\n            // https://drafts.csswg.org/selectors/#relational now requires the argument\n            // to be parsed unforgivingly, but browsers have not yet fully adjusted.\n            rbuggyQSA.push(\":has\");\n            rbuggyQSA = rbuggyQSA.length && new RegExp(rbuggyQSA.join(\"|\"));\n            /* Sorting\n\t---------------------------------------------------------------------- */ // Document order sorting\n            sortOrder = function(a, b) {\n                // Flag for duplicate removal\n                if (a === b) {\n                    hasDuplicate = true;\n                    return 0;\n                }\n                // Sort on method existence if only one input has compareDocumentPosition\n                var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n                if (compare) return compare;\n                // Calculate position if both inputs belong to the same document\n                // Support: IE 11+, Edge 17 - 18+\n                // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                // two documents; shallow comparisons work.\n                // eslint-disable-next-line eqeqeq\n                compare = (a.ownerDocument || a) == (b.ownerDocument || b) ? a.compareDocumentPosition(b) : // Otherwise we know they are disconnected\n                1;\n                // Disconnected nodes\n                if (compare & 1 || !support.sortDetached && b.compareDocumentPosition(a) === compare) {\n                    // Choose the first element that is related to our preferred document\n                    // Support: IE 11+, Edge 17 - 18+\n                    // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                    // two documents; shallow comparisons work.\n                    // eslint-disable-next-line eqeqeq\n                    if (a === document || a.ownerDocument == preferredDoc && find.contains(preferredDoc, a)) return -1;\n                    // Support: IE 11+, Edge 17 - 18+\n                    // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                    // two documents; shallow comparisons work.\n                    // eslint-disable-next-line eqeqeq\n                    if (b === document || b.ownerDocument == preferredDoc && find.contains(preferredDoc, b)) return 1;\n                    // Maintain original order\n                    return sortInput ? indexOf.call(sortInput, a) - indexOf.call(sortInput, b) : 0;\n                }\n                return compare & 4 ? -1 : 1;\n            };\n            return document;\n        }\n        find.matches = function(expr, elements) {\n            return find(expr, null, null, elements);\n        };\n        find.matchesSelector = function(elem, expr) {\n            setDocument(elem);\n            if (documentIsHTML && !nonnativeSelectorCache[expr + \" \"] && (!rbuggyQSA || !rbuggyQSA.test(expr))) try {\n                var ret = matches.call(elem, expr);\n                // IE 9's matchesSelector returns false on disconnected nodes\n                if (ret || support.disconnectedMatch || // As well, disconnected nodes are said to be in a document\n                // fragment in IE 9\n                elem.document && elem.document.nodeType !== 11) return ret;\n            } catch (e) {\n                nonnativeSelectorCache(expr, true);\n            }\n            return find(expr, document, null, [\n                elem\n            ]).length > 0;\n        };\n        find.contains = function(context, elem) {\n            // Set document vars if needed\n            // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            if ((context.ownerDocument || context) != document) setDocument(context);\n            return jQuery.contains(context, elem);\n        };\n        find.attr = function(elem, name) {\n            // Set document vars if needed\n            // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            if ((elem.ownerDocument || elem) != document) setDocument(elem);\n            var fn = Expr.attrHandle[name.toLowerCase()], // Don't get fooled by Object.prototype properties (see trac-13807)\n            val = fn && hasOwn.call(Expr.attrHandle, name.toLowerCase()) ? fn(elem, name, !documentIsHTML) : undefined;\n            if (val !== undefined) return val;\n            return elem.getAttribute(name);\n        };\n        find.error = function(msg) {\n            throw new Error(\"Syntax error, unrecognized expression: \" + msg);\n        };\n        /**\n * Document sorting and removing duplicates\n * @param {ArrayLike} results\n */ jQuery.uniqueSort = function(results) {\n            var elem, duplicates = [], j = 0, i = 0;\n            // Unless we *know* we can detect duplicates, assume their presence\n            //\n            // Support: Android <=4.0+\n            // Testing for detecting duplicates is unpredictable so instead assume we can't\n            // depend on duplicate detection in all browsers without a stable sort.\n            hasDuplicate = !support.sortStable;\n            sortInput = !support.sortStable && slice.call(results, 0);\n            sort.call(results, sortOrder);\n            if (hasDuplicate) {\n                while(elem = results[i++])if (elem === results[i]) j = duplicates.push(i);\n                while(j--)splice.call(results, duplicates[j], 1);\n            }\n            // Clear input after sorting to release objects\n            // See https://github.com/jquery/sizzle/pull/225\n            sortInput = null;\n            return results;\n        };\n        jQuery.fn.uniqueSort = function() {\n            return this.pushStack(jQuery.uniqueSort(slice.apply(this)));\n        };\n        Expr = jQuery.expr = {\n            // Can be adjusted by the user\n            cacheLength: 50,\n            createPseudo: markFunction,\n            match: matchExpr,\n            attrHandle: {},\n            find: {},\n            relative: {\n                \">\": {\n                    dir: \"parentNode\",\n                    first: true\n                },\n                \" \": {\n                    dir: \"parentNode\"\n                },\n                \"+\": {\n                    dir: \"previousSibling\",\n                    first: true\n                },\n                \"~\": {\n                    dir: \"previousSibling\"\n                }\n            },\n            preFilter: {\n                ATTR: function(match) {\n                    match[1] = match[1].replace(runescape, funescape);\n                    // Move the given value to match[3] whether quoted or unquoted\n                    match[3] = (match[3] || match[4] || match[5] || \"\").replace(runescape, funescape);\n                    if (match[2] === \"~=\") match[3] = \" \" + match[3] + \" \";\n                    return match.slice(0, 4);\n                },\n                CHILD: function(match) {\n                    /* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/ match[1] = match[1].toLowerCase();\n                    if (match[1].slice(0, 3) === \"nth\") {\n                        // nth-* requires argument\n                        if (!match[3]) find.error(match[0]);\n                        // numeric x and y parameters for Expr.filter.CHILD\n                        // remember that false/true cast respectively to 0/1\n                        match[4] = +(match[4] ? match[5] + (match[6] || 1) : 2 * (match[3] === \"even\" || match[3] === \"odd\"));\n                        match[5] = +(match[7] + match[8] || match[3] === \"odd\");\n                    // other types prohibit arguments\n                    } else if (match[3]) find.error(match[0]);\n                    return match;\n                },\n                PSEUDO: function(match) {\n                    var excess, unquoted = !match[6] && match[2];\n                    if (matchExpr.CHILD.test(match[0])) return null;\n                    // Accept quoted arguments as-is\n                    if (match[3]) match[2] = match[4] || match[5] || \"\";\n                    else if (unquoted && rpseudo.test(unquoted) && // Get excess from tokenize (recursively)\n                    (excess = tokenize(unquoted, true)) && // advance to the next closing parenthesis\n                    (excess = unquoted.indexOf(\")\", unquoted.length - excess) - unquoted.length)) {\n                        // excess is a negative index\n                        match[0] = match[0].slice(0, excess);\n                        match[2] = unquoted.slice(0, excess);\n                    }\n                    // Return only captures needed by the pseudo filter method (type and argument)\n                    return match.slice(0, 3);\n                }\n            },\n            filter: {\n                TAG: function(nodeNameSelector) {\n                    var expectedNodeName = nodeNameSelector.replace(runescape, funescape).toLowerCase();\n                    return nodeNameSelector === \"*\" ? function() {\n                        return true;\n                    } : function(elem) {\n                        return nodeName(elem, expectedNodeName);\n                    };\n                },\n                CLASS: function(className) {\n                    var pattern = classCache[className + \" \"];\n                    return pattern || (pattern = new RegExp(\"(^|\" + whitespace + \")\" + className + \"(\" + whitespace + \"|$)\"), classCache(className, function(elem) {\n                        return pattern.test(typeof elem.className === \"string\" && elem.className || typeof elem.getAttribute !== \"undefined\" && elem.getAttribute(\"class\") || \"\");\n                    }));\n                },\n                ATTR: function(name, operator, check) {\n                    return function(elem) {\n                        var result = find.attr(elem, name);\n                        if (result == null) return operator === \"!=\";\n                        if (!operator) return true;\n                        result += \"\";\n                        if (operator === \"=\") return result === check;\n                        if (operator === \"!=\") return result !== check;\n                        if (operator === \"^=\") return check && result.indexOf(check) === 0;\n                        if (operator === \"*=\") return check && result.indexOf(check) > -1;\n                        if (operator === \"$=\") return check && result.slice(-check.length) === check;\n                        if (operator === \"~=\") return (\" \" + result.replace(rwhitespace, \" \") + \" \").indexOf(check) > -1;\n                        if (operator === \"|=\") return result === check || result.slice(0, check.length + 1) === check + \"-\";\n                        return false;\n                    };\n                },\n                CHILD: function(type, what, _argument, first, last) {\n                    var simple = type.slice(0, 3) !== \"nth\", forward = type.slice(-4) !== \"last\", ofType = what === \"of-type\";\n                    return first === 1 && last === 0 ? // Shortcut for :nth-*(n)\n                    function(elem) {\n                        return !!elem.parentNode;\n                    } : function(elem, _context, xml) {\n                        var cache, outerCache, node, nodeIndex, start, dir = simple !== forward ? \"nextSibling\" : \"previousSibling\", parent = elem.parentNode, name = ofType && elem.nodeName.toLowerCase(), useCache = !xml && !ofType, diff = false;\n                        if (parent) {\n                            // :(first|last|only)-(child|of-type)\n                            if (simple) {\n                                while(dir){\n                                    node = elem;\n                                    while(node = node[dir]){\n                                        if (ofType ? nodeName(node, name) : node.nodeType === 1) return false;\n                                    }\n                                    // Reverse direction for :only-* (if we haven't yet done so)\n                                    start = dir = type === \"only\" && !start && \"nextSibling\";\n                                }\n                                return true;\n                            }\n                            start = [\n                                forward ? parent.firstChild : parent.lastChild\n                            ];\n                            // non-xml :nth-child(...) stores cache data on `parent`\n                            if (forward && useCache) {\n                                // Seek `elem` from a previously-cached index\n                                outerCache = parent[expando] || (parent[expando] = {});\n                                cache = outerCache[type] || [];\n                                nodeIndex = cache[0] === dirruns && cache[1];\n                                diff = nodeIndex && cache[2];\n                                node = nodeIndex && parent.childNodes[nodeIndex];\n                                while(node = ++nodeIndex && node && node[dir] || // Fallback to seeking `elem` from the start\n                                (diff = nodeIndex = 0) || start.pop())// When found, cache indexes on `parent` and break\n                                if (node.nodeType === 1 && ++diff && node === elem) {\n                                    outerCache[type] = [\n                                        dirruns,\n                                        nodeIndex,\n                                        diff\n                                    ];\n                                    break;\n                                }\n                            } else {\n                                // Use previously-cached element index if available\n                                if (useCache) {\n                                    outerCache = elem[expando] || (elem[expando] = {});\n                                    cache = outerCache[type] || [];\n                                    nodeIndex = cache[0] === dirruns && cache[1];\n                                    diff = nodeIndex;\n                                }\n                                // xml :nth-child(...)\n                                // or :nth-last-child(...) or :nth(-last)?-of-type(...)\n                                if (diff === false) {\n                                    // Use the same loop as above to seek `elem` from the start\n                                    while(node = ++nodeIndex && node && node[dir] || (diff = nodeIndex = 0) || start.pop())if ((ofType ? nodeName(node, name) : node.nodeType === 1) && ++diff) {\n                                        // Cache the index of each encountered element\n                                        if (useCache) {\n                                            outerCache = node[expando] || (node[expando] = {});\n                                            outerCache[type] = [\n                                                dirruns,\n                                                diff\n                                            ];\n                                        }\n                                        if (node === elem) break;\n                                    }\n                                }\n                            }\n                            // Incorporate the offset, then check against cycle size\n                            diff -= last;\n                            return diff === first || diff % first === 0 && diff / first >= 0;\n                        }\n                    };\n                },\n                PSEUDO: function(pseudo, argument) {\n                    // pseudo-class names are case-insensitive\n                    // https://www.w3.org/TR/selectors/#pseudo-classes\n                    // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n                    // Remember that setFilters inherits from pseudos\n                    var args, fn = Expr.pseudos[pseudo] || Expr.setFilters[pseudo.toLowerCase()] || find.error(\"unsupported pseudo: \" + pseudo);\n                    // The user may use createPseudo to indicate that\n                    // arguments are needed to create the filter function\n                    // just as jQuery does\n                    if (fn[expando]) return fn(argument);\n                    // But maintain support for old signatures\n                    if (fn.length > 1) {\n                        args = [\n                            pseudo,\n                            pseudo,\n                            \"\",\n                            argument\n                        ];\n                        return Expr.setFilters.hasOwnProperty(pseudo.toLowerCase()) ? markFunction(function(seed, matches) {\n                            var idx, matched = fn(seed, argument), i = matched.length;\n                            while(i--){\n                                idx = indexOf.call(seed, matched[i]);\n                                seed[idx] = !(matches[idx] = matched[i]);\n                            }\n                        }) : function(elem) {\n                            return fn(elem, 0, args);\n                        };\n                    }\n                    return fn;\n                }\n            },\n            pseudos: {\n                // Potentially complex pseudos\n                not: markFunction(function(selector) {\n                    // Trim the selector passed to compile\n                    // to avoid treating leading and trailing\n                    // spaces as combinators\n                    var input = [], results = [], matcher = compile(selector.replace(rtrimCSS, \"$1\"));\n                    return matcher[expando] ? markFunction(function(seed, matches, _context, xml) {\n                        var elem, unmatched = matcher(seed, null, xml, []), i = seed.length;\n                        // Match elements unmatched by `matcher`\n                        while(i--)if (elem = unmatched[i]) seed[i] = !(matches[i] = elem);\n                    }) : function(elem, _context, xml) {\n                        input[0] = elem;\n                        matcher(input, null, xml, results);\n                        // Don't keep the element\n                        // (see https://github.com/jquery/sizzle/issues/299)\n                        input[0] = null;\n                        return !results.pop();\n                    };\n                }),\n                has: markFunction(function(selector) {\n                    return function(elem) {\n                        return find(selector, elem).length > 0;\n                    };\n                }),\n                contains: markFunction(function(text) {\n                    text = text.replace(runescape, funescape);\n                    return function(elem) {\n                        return (elem.textContent || jQuery.text(elem)).indexOf(text) > -1;\n                    };\n                }),\n                // \"Whether an element is represented by a :lang() selector\n                // is based solely on the element's language value\n                // being equal to the identifier C,\n                // or beginning with the identifier C immediately followed by \"-\".\n                // The matching of C against the element's language value is performed case-insensitively.\n                // The identifier C does not have to be a valid language name.\"\n                // https://www.w3.org/TR/selectors/#lang-pseudo\n                lang: markFunction(function(lang) {\n                    // lang value must be a valid identifier\n                    if (!ridentifier.test(lang || \"\")) find.error(\"unsupported lang: \" + lang);\n                    lang = lang.replace(runescape, funescape).toLowerCase();\n                    return function(elem) {\n                        var elemLang;\n                        do if (elemLang = documentIsHTML ? elem.lang : elem.getAttribute(\"xml:lang\") || elem.getAttribute(\"lang\")) {\n                            elemLang = elemLang.toLowerCase();\n                            return elemLang === lang || elemLang.indexOf(lang + \"-\") === 0;\n                        }\n                        while ((elem = elem.parentNode) && elem.nodeType === 1);\n                        return false;\n                    };\n                }),\n                // Miscellaneous\n                target: function(elem) {\n                    var hash = window1.location && window1.location.hash;\n                    return hash && hash.slice(1) === elem.id;\n                },\n                root: function(elem) {\n                    return elem === documentElement;\n                },\n                focus: function(elem) {\n                    return elem === safeActiveElement() && document.hasFocus() && !!(elem.type || elem.href || ~elem.tabIndex);\n                },\n                // Boolean properties\n                enabled: createDisabledPseudo(false),\n                disabled: createDisabledPseudo(true),\n                checked: function(elem) {\n                    // In CSS3, :checked should return both checked and selected elements\n                    // https://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n                    return nodeName(elem, \"input\") && !!elem.checked || nodeName(elem, \"option\") && !!elem.selected;\n                },\n                selected: function(elem) {\n                    // Support: IE <=11+\n                    // Accessing the selectedIndex property\n                    // forces the browser to treat the default option as\n                    // selected when in an optgroup.\n                    if (elem.parentNode) // eslint-disable-next-line no-unused-expressions\n                    elem.parentNode.selectedIndex;\n                    return elem.selected === true;\n                },\n                // Contents\n                empty: function(elem) {\n                    // https://www.w3.org/TR/selectors/#empty-pseudo\n                    // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n                    //   but not by others (comment: 8; processing instruction: 7; etc.)\n                    // nodeType < 6 works because attributes (2) do not appear as children\n                    for(elem = elem.firstChild; elem; elem = elem.nextSibling){\n                        if (elem.nodeType < 6) return false;\n                    }\n                    return true;\n                },\n                parent: function(elem) {\n                    return !Expr.pseudos.empty(elem);\n                },\n                // Element/input types\n                header: function(elem) {\n                    return rheader.test(elem.nodeName);\n                },\n                input: function(elem) {\n                    return rinputs.test(elem.nodeName);\n                },\n                button: function(elem) {\n                    return nodeName(elem, \"input\") && elem.type === \"button\" || nodeName(elem, \"button\");\n                },\n                text: function(elem) {\n                    var attr;\n                    return nodeName(elem, \"input\") && elem.type === \"text\" && // Support: IE <10 only\n                    // New HTML5 attribute values (e.g., \"search\") appear\n                    // with elem.type === \"text\"\n                    ((attr = elem.getAttribute(\"type\")) == null || attr.toLowerCase() === \"text\");\n                },\n                // Position-in-collection\n                first: createPositionalPseudo(function() {\n                    return [\n                        0\n                    ];\n                }),\n                last: createPositionalPseudo(function(_matchIndexes, length) {\n                    return [\n                        length - 1\n                    ];\n                }),\n                eq: createPositionalPseudo(function(_matchIndexes, length, argument) {\n                    return [\n                        argument < 0 ? argument + length : argument\n                    ];\n                }),\n                even: createPositionalPseudo(function(matchIndexes, length) {\n                    var i = 0;\n                    for(; i < length; i += 2)matchIndexes.push(i);\n                    return matchIndexes;\n                }),\n                odd: createPositionalPseudo(function(matchIndexes, length) {\n                    var i = 1;\n                    for(; i < length; i += 2)matchIndexes.push(i);\n                    return matchIndexes;\n                }),\n                lt: createPositionalPseudo(function(matchIndexes, length, argument) {\n                    var i;\n                    if (argument < 0) i = argument + length;\n                    else if (argument > length) i = length;\n                    else i = argument;\n                    for(; --i >= 0;)matchIndexes.push(i);\n                    return matchIndexes;\n                }),\n                gt: createPositionalPseudo(function(matchIndexes, length, argument) {\n                    var i = argument < 0 ? argument + length : argument;\n                    for(; ++i < length;)matchIndexes.push(i);\n                    return matchIndexes;\n                })\n            }\n        };\n        Expr.pseudos.nth = Expr.pseudos.eq;\n        // Add button/input type pseudos\n        for(i in {\n            radio: true,\n            checkbox: true,\n            file: true,\n            password: true,\n            image: true\n        })Expr.pseudos[i] = createInputPseudo(i);\n        for(i in {\n            submit: true,\n            reset: true\n        })Expr.pseudos[i] = createButtonPseudo(i);\n        // Easy API for creating new setFilters\n        function setFilters() {}\n        setFilters.prototype = Expr.filters = Expr.pseudos;\n        Expr.setFilters = new setFilters();\n        function tokenize(selector, parseOnly) {\n            var matched, match, tokens, type, soFar, groups, preFilters, cached = tokenCache[selector + \" \"];\n            if (cached) return parseOnly ? 0 : cached.slice(0);\n            soFar = selector;\n            groups = [];\n            preFilters = Expr.preFilter;\n            while(soFar){\n                // Comma and first run\n                if (!matched || (match = rcomma.exec(soFar))) {\n                    if (match) // Don't consume trailing commas as valid\n                    soFar = soFar.slice(match[0].length) || soFar;\n                    groups.push(tokens = []);\n                }\n                matched = false;\n                // Combinators\n                if (match = rleadingCombinator.exec(soFar)) {\n                    matched = match.shift();\n                    tokens.push({\n                        value: matched,\n                        // Cast descendant combinators to space\n                        type: match[0].replace(rtrimCSS, \" \")\n                    });\n                    soFar = soFar.slice(matched.length);\n                }\n                // Filters\n                for(type in Expr.filter)if ((match = matchExpr[type].exec(soFar)) && (!preFilters[type] || (match = preFilters[type](match)))) {\n                    matched = match.shift();\n                    tokens.push({\n                        value: matched,\n                        type: type,\n                        matches: match\n                    });\n                    soFar = soFar.slice(matched.length);\n                }\n                if (!matched) break;\n            }\n            // Return the length of the invalid excess\n            // if we're just parsing\n            // Otherwise, throw an error or return tokens\n            if (parseOnly) return soFar.length;\n            return soFar ? find.error(selector) : // Cache the tokens\n            tokenCache(selector, groups).slice(0);\n        }\n        function toSelector(tokens) {\n            var i = 0, len = tokens.length, selector = \"\";\n            for(; i < len; i++)selector += tokens[i].value;\n            return selector;\n        }\n        function addCombinator(matcher, combinator, base) {\n            var dir = combinator.dir, skip = combinator.next, key = skip || dir, checkNonElements = base && key === \"parentNode\", doneName = done++;\n            return combinator.first ? // Check against closest ancestor/preceding element\n            function(elem, context, xml) {\n                while(elem = elem[dir]){\n                    if (elem.nodeType === 1 || checkNonElements) return matcher(elem, context, xml);\n                }\n                return false;\n            } : // Check against all ancestor/preceding elements\n            function(elem, context, xml) {\n                var oldCache, outerCache, newCache = [\n                    dirruns,\n                    doneName\n                ];\n                // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n                if (xml) {\n                    while(elem = elem[dir])if (elem.nodeType === 1 || checkNonElements) {\n                        if (matcher(elem, context, xml)) return true;\n                    }\n                } else {\n                    while(elem = elem[dir])if (elem.nodeType === 1 || checkNonElements) {\n                        outerCache = elem[expando] || (elem[expando] = {});\n                        if (skip && nodeName(elem, skip)) elem = elem[dir] || elem;\n                        else if ((oldCache = outerCache[key]) && oldCache[0] === dirruns && oldCache[1] === doneName) // Assign to newCache so results back-propagate to previous elements\n                        return newCache[2] = oldCache[2];\n                        else {\n                            // Reuse newcache so results back-propagate to previous elements\n                            outerCache[key] = newCache;\n                            // A match means we're done; a fail means we have to keep checking\n                            if (newCache[2] = matcher(elem, context, xml)) return true;\n                        }\n                    }\n                }\n                return false;\n            };\n        }\n        function elementMatcher(matchers) {\n            return matchers.length > 1 ? function(elem, context, xml) {\n                var i = matchers.length;\n                while(i--){\n                    if (!matchers[i](elem, context, xml)) return false;\n                }\n                return true;\n            } : matchers[0];\n        }\n        function multipleContexts(selector, contexts, results) {\n            var i = 0, len = contexts.length;\n            for(; i < len; i++)find(selector, contexts[i], results);\n            return results;\n        }\n        function condense(unmatched, map, filter, context, xml) {\n            var elem, newUnmatched = [], i = 0, len = unmatched.length, mapped = map != null;\n            for(; i < len; i++){\n                if (elem = unmatched[i]) {\n                    if (!filter || filter(elem, context, xml)) {\n                        newUnmatched.push(elem);\n                        if (mapped) map.push(i);\n                    }\n                }\n            }\n            return newUnmatched;\n        }\n        function setMatcher(preFilter, selector, matcher, postFilter, postFinder, postSelector) {\n            if (postFilter && !postFilter[expando]) postFilter = setMatcher(postFilter);\n            if (postFinder && !postFinder[expando]) postFinder = setMatcher(postFinder, postSelector);\n            return markFunction(function(seed, results, context, xml) {\n                var temp, i, elem, matcherOut, preMap = [], postMap = [], preexisting = results.length, // Get initial elements from seed or context\n                elems = seed || multipleContexts(selector || \"*\", context.nodeType ? [\n                    context\n                ] : context, []), // Prefilter to get matcher input, preserving a map for seed-results synchronization\n                matcherIn = preFilter && (seed || !selector) ? condense(elems, preMap, preFilter, context, xml) : elems;\n                if (matcher) {\n                    // If we have a postFinder, or filtered seed, or non-seed postFilter\n                    // or preexisting results,\n                    matcherOut = postFinder || (seed ? preFilter : preexisting || postFilter) ? // ...intermediate processing is necessary\n                    [] : // ...otherwise use results directly\n                    results;\n                    // Find primary matches\n                    matcher(matcherIn, matcherOut, context, xml);\n                } else matcherOut = matcherIn;\n                // Apply postFilter\n                if (postFilter) {\n                    temp = condense(matcherOut, postMap);\n                    postFilter(temp, [], context, xml);\n                    // Un-match failing elements by moving them back to matcherIn\n                    i = temp.length;\n                    while(i--)if (elem = temp[i]) matcherOut[postMap[i]] = !(matcherIn[postMap[i]] = elem);\n                }\n                if (seed) {\n                    if (postFinder || preFilter) {\n                        if (postFinder) {\n                            // Get the final matcherOut by condensing this intermediate into postFinder contexts\n                            temp = [];\n                            i = matcherOut.length;\n                            while(i--)if (elem = matcherOut[i]) // Restore matcherIn since elem is not yet a final match\n                            temp.push(matcherIn[i] = elem);\n                            postFinder(null, matcherOut = [], temp, xml);\n                        }\n                        // Move matched elements from seed to results to keep them synchronized\n                        i = matcherOut.length;\n                        while(i--)if ((elem = matcherOut[i]) && (temp = postFinder ? indexOf.call(seed, elem) : preMap[i]) > -1) seed[temp] = !(results[temp] = elem);\n                    }\n                } else {\n                    matcherOut = condense(matcherOut === results ? matcherOut.splice(preexisting, matcherOut.length) : matcherOut);\n                    if (postFinder) postFinder(null, results, matcherOut, xml);\n                    else push.apply(results, matcherOut);\n                }\n            });\n        }\n        function matcherFromTokens(tokens) {\n            var checkContext, matcher, j, len = tokens.length, leadingRelative = Expr.relative[tokens[0].type], implicitRelative = leadingRelative || Expr.relative[\" \"], i = leadingRelative ? 1 : 0, // The foundational matcher ensures that elements are reachable from top-level context(s)\n            matchContext = addCombinator(function(elem) {\n                return elem === checkContext;\n            }, implicitRelative, true), matchAnyContext = addCombinator(function(elem) {\n                return indexOf.call(checkContext, elem) > -1;\n            }, implicitRelative, true), matchers = [\n                function(elem, context, xml) {\n                    // Support: IE 11+, Edge 17 - 18+\n                    // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                    // two documents; shallow comparisons work.\n                    // eslint-disable-next-line eqeqeq\n                    var ret = !leadingRelative && (xml || context != outermostContext) || ((checkContext = context).nodeType ? matchContext(elem, context, xml) : matchAnyContext(elem, context, xml));\n                    // Avoid hanging onto element\n                    // (see https://github.com/jquery/sizzle/issues/299)\n                    checkContext = null;\n                    return ret;\n                }\n            ];\n            for(; i < len; i++)if (matcher = Expr.relative[tokens[i].type]) matchers = [\n                addCombinator(elementMatcher(matchers), matcher)\n            ];\n            else {\n                matcher = Expr.filter[tokens[i].type].apply(null, tokens[i].matches);\n                // Return special upon seeing a positional matcher\n                if (matcher[expando]) {\n                    // Find the next relative operator (if any) for proper handling\n                    j = ++i;\n                    for(; j < len; j++){\n                        if (Expr.relative[tokens[j].type]) break;\n                    }\n                    return setMatcher(i > 1 && elementMatcher(matchers), i > 1 && toSelector(// If the preceding token was a descendant combinator, insert an implicit any-element `*`\n                    tokens.slice(0, i - 1).concat({\n                        value: tokens[i - 2].type === \" \" ? \"*\" : \"\"\n                    })).replace(rtrimCSS, \"$1\"), matcher, i < j && matcherFromTokens(tokens.slice(i, j)), j < len && matcherFromTokens(tokens = tokens.slice(j)), j < len && toSelector(tokens));\n                }\n                matchers.push(matcher);\n            }\n            return elementMatcher(matchers);\n        }\n        function matcherFromGroupMatchers(elementMatchers, setMatchers) {\n            var bySet = setMatchers.length > 0, byElement = elementMatchers.length > 0, superMatcher = function(seed, context, xml, results, outermost) {\n                var elem, j, matcher, matchedCount = 0, i = \"0\", unmatched = seed && [], setMatched = [], contextBackup = outermostContext, // We must always have either seed elements or outermost context\n                elems = seed || byElement && Expr.find.TAG(\"*\", outermost), // Use integer dirruns iff this is the outermost matcher\n                dirrunsUnique = dirruns += contextBackup == null ? 1 : Math.random() || 0.1, len = elems.length;\n                if (outermost) // Support: IE 11+, Edge 17 - 18+\n                // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                // two documents; shallow comparisons work.\n                // eslint-disable-next-line eqeqeq\n                outermostContext = context == document || context || outermost;\n                // Add elements passing elementMatchers directly to results\n                // Support: iOS <=7 - 9 only\n                // Tolerate NodeList properties (IE: \"length\"; Safari: <number>) matching\n                // elements by id. (see trac-14142)\n                for(; i !== len && (elem = elems[i]) != null; i++){\n                    if (byElement && elem) {\n                        j = 0;\n                        // Support: IE 11+, Edge 17 - 18+\n                        // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                        // two documents; shallow comparisons work.\n                        // eslint-disable-next-line eqeqeq\n                        if (!context && elem.ownerDocument != document) {\n                            setDocument(elem);\n                            xml = !documentIsHTML;\n                        }\n                        while(matcher = elementMatchers[j++])if (matcher(elem, context || document, xml)) {\n                            push.call(results, elem);\n                            break;\n                        }\n                        if (outermost) dirruns = dirrunsUnique;\n                    }\n                    // Track unmatched elements for set filters\n                    if (bySet) {\n                        // They will have gone through all possible matchers\n                        if (elem = !matcher && elem) matchedCount--;\n                        // Lengthen the array for every element, matched or not\n                        if (seed) unmatched.push(elem);\n                    }\n                }\n                // `i` is now the count of elements visited above, and adding it to `matchedCount`\n                // makes the latter nonnegative.\n                matchedCount += i;\n                // Apply set filters to unmatched elements\n                // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n                // equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n                // no element matchers and no seed.\n                // Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n                // case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n                // numerically zero.\n                if (bySet && i !== matchedCount) {\n                    j = 0;\n                    while(matcher = setMatchers[j++])matcher(unmatched, setMatched, context, xml);\n                    if (seed) {\n                        // Reintegrate element matches to eliminate the need for sorting\n                        if (matchedCount > 0) {\n                            while(i--)if (!(unmatched[i] || setMatched[i])) setMatched[i] = pop.call(results);\n                        }\n                        // Discard index placeholder values to get only actual matches\n                        setMatched = condense(setMatched);\n                    }\n                    // Add matches to results\n                    push.apply(results, setMatched);\n                    // Seedless set matches succeeding multiple successful matchers stipulate sorting\n                    if (outermost && !seed && setMatched.length > 0 && matchedCount + setMatchers.length > 1) jQuery.uniqueSort(results);\n                }\n                // Override manipulation of globals by nested matchers\n                if (outermost) {\n                    dirruns = dirrunsUnique;\n                    outermostContext = contextBackup;\n                }\n                return unmatched;\n            };\n            return bySet ? markFunction(superMatcher) : superMatcher;\n        }\n        function compile(selector, match /* Internal Use Only */ ) {\n            var i, setMatchers = [], elementMatchers = [], cached = compilerCache[selector + \" \"];\n            if (!cached) {\n                // Generate a function of recursive functions that can be used to check each element\n                if (!match) match = tokenize(selector);\n                i = match.length;\n                while(i--){\n                    cached = matcherFromTokens(match[i]);\n                    if (cached[expando]) setMatchers.push(cached);\n                    else elementMatchers.push(cached);\n                }\n                // Cache the compiled function\n                cached = compilerCache(selector, matcherFromGroupMatchers(elementMatchers, setMatchers));\n                // Save selector and tokenization\n                cached.selector = selector;\n            }\n            return cached;\n        }\n        /**\n * A low-level selection function that works with jQuery's compiled\n *  selector functions\n * @param {String|Function} selector A selector or a pre-compiled\n *  selector function built with jQuery selector compile\n * @param {Element} context\n * @param {Array} [results]\n * @param {Array} [seed] A set of elements to match against\n */ function select(selector, context, results, seed) {\n            var i, tokens, token, type, find, compiled = typeof selector === \"function\" && selector, match = !seed && tokenize(selector = compiled.selector || selector);\n            results = results || [];\n            // Try to minimize operations if there is only one selector in the list and no seed\n            // (the latter of which guarantees us context)\n            if (match.length === 1) {\n                // Reduce context if the leading compound selector is an ID\n                tokens = match[0] = match[0].slice(0);\n                if (tokens.length > 2 && (token = tokens[0]).type === \"ID\" && context.nodeType === 9 && documentIsHTML && Expr.relative[tokens[1].type]) {\n                    context = (Expr.find.ID(token.matches[0].replace(runescape, funescape), context) || [])[0];\n                    if (!context) return results;\n                    else if (compiled) context = context.parentNode;\n                    selector = selector.slice(tokens.shift().value.length);\n                }\n                // Fetch a seed set for right-to-left matching\n                i = matchExpr.needsContext.test(selector) ? 0 : tokens.length;\n                while(i--){\n                    token = tokens[i];\n                    // Abort if we hit a combinator\n                    if (Expr.relative[type = token.type]) break;\n                    if (find = Expr.find[type]) // Search, expanding context for leading sibling combinators\n                    {\n                        if (seed = find(token.matches[0].replace(runescape, funescape), rsibling.test(tokens[0].type) && testContext(context.parentNode) || context)) {\n                            // If seed is empty or no tokens remain, we can return early\n                            tokens.splice(i, 1);\n                            selector = seed.length && toSelector(tokens);\n                            if (!selector) {\n                                push.apply(results, seed);\n                                return results;\n                            }\n                            break;\n                        }\n                    }\n                }\n            }\n            // Compile and execute a filtering function if one is not provided\n            // Provide `match` to avoid retokenization if we modified the selector above\n            (compiled || compile(selector, match))(seed, context, !documentIsHTML, results, !context || rsibling.test(selector) && testContext(context.parentNode) || context);\n            return results;\n        }\n        // One-time assignments\n        // Support: Android <=4.0 - 4.1+\n        // Sort stability\n        support.sortStable = expando.split(\"\").sort(sortOrder).join(\"\") === expando;\n        // Initialize against the default document\n        setDocument();\n        // Support: Android <=4.0 - 4.1+\n        // Detached nodes confoundingly follow *each other*\n        support.sortDetached = assert(function(el) {\n            // Should return 1, but returns 4 (following)\n            return el.compareDocumentPosition(document.createElement(\"fieldset\")) & 1;\n        });\n        jQuery.find = find;\n        // Deprecated\n        jQuery.expr[\":\"] = jQuery.expr.pseudos;\n        jQuery.unique = jQuery.uniqueSort;\n        // These have always been private, but they used to be documented as part of\n        // Sizzle so let's maintain them for now for backwards compatibility purposes.\n        find.compile = compile;\n        find.select = select;\n        find.setDocument = setDocument;\n        find.tokenize = tokenize;\n        find.escape = jQuery.escapeSelector;\n        find.getText = jQuery.text;\n        find.isXML = jQuery.isXMLDoc;\n        find.selectors = jQuery.expr;\n        find.support = jQuery.support;\n        find.uniqueSort = jQuery.uniqueSort;\n    /* eslint-enable */ })();\n    var dir = function(elem, dir, until) {\n        var matched = [], truncate = until !== undefined;\n        while((elem = elem[dir]) && elem.nodeType !== 9)if (elem.nodeType === 1) {\n            if (truncate && jQuery(elem).is(until)) break;\n            matched.push(elem);\n        }\n        return matched;\n    };\n    var siblings = function(n, elem) {\n        var matched = [];\n        for(; n; n = n.nextSibling)if (n.nodeType === 1 && n !== elem) matched.push(n);\n        return matched;\n    };\n    var rneedsContext = jQuery.expr.match.needsContext;\n    var rsingleTag = /^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i;\n    // Implement the identical functionality for filter and not\n    function winnow(elements, qualifier, not) {\n        if (isFunction(qualifier)) return jQuery.grep(elements, function(elem, i) {\n            return !!qualifier.call(elem, i, elem) !== not;\n        });\n        // Single element\n        if (qualifier.nodeType) return jQuery.grep(elements, function(elem) {\n            return elem === qualifier !== not;\n        });\n        // Arraylike of elements (jQuery, arguments, Array)\n        if (typeof qualifier !== \"string\") return jQuery.grep(elements, function(elem) {\n            return indexOf.call(qualifier, elem) > -1 !== not;\n        });\n        // Filtered directly for both simple and complex selectors\n        return jQuery.filter(qualifier, elements, not);\n    }\n    jQuery.filter = function(expr, elems, not) {\n        var elem = elems[0];\n        if (not) expr = \":not(\" + expr + \")\";\n        if (elems.length === 1 && elem.nodeType === 1) return jQuery.find.matchesSelector(elem, expr) ? [\n            elem\n        ] : [];\n        return jQuery.find.matches(expr, jQuery.grep(elems, function(elem) {\n            return elem.nodeType === 1;\n        }));\n    };\n    jQuery.fn.extend({\n        find: function(selector) {\n            var i, ret, len = this.length, self = this;\n            if (typeof selector !== \"string\") return this.pushStack(jQuery(selector).filter(function() {\n                for(i = 0; i < len; i++){\n                    if (jQuery.contains(self[i], this)) return true;\n                }\n            }));\n            ret = this.pushStack([]);\n            for(i = 0; i < len; i++)jQuery.find(selector, self[i], ret);\n            return len > 1 ? jQuery.uniqueSort(ret) : ret;\n        },\n        filter: function(selector) {\n            return this.pushStack(winnow(this, selector || [], false));\n        },\n        not: function(selector) {\n            return this.pushStack(winnow(this, selector || [], true));\n        },\n        is: function(selector) {\n            return !!winnow(this, // If this is a positional/relative selector, check membership in the returned set\n            // so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n            typeof selector === \"string\" && rneedsContext.test(selector) ? jQuery(selector) : selector || [], false).length;\n        }\n    });\n    // Initialize a jQuery object\n    // A central reference to the root jQuery(document)\n    var rootjQuery, // A simple way to check for HTML strings\n    // Prioritize #id over <tag> to avoid XSS via location.hash (trac-9521)\n    // Strict HTML recognition (trac-11290: must start with <)\n    // Shortcut simple #id case for speed\n    rquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/, init = jQuery.fn.init = function(selector, context, root) {\n        var match, elem;\n        // HANDLE: $(\"\"), $(null), $(undefined), $(false)\n        if (!selector) return this;\n        // Method init() accepts an alternate rootjQuery\n        // so migrate can support jQuery.sub (gh-2101)\n        root = root || rootjQuery;\n        // Handle HTML strings\n        if (typeof selector === \"string\") {\n            if (selector[0] === \"<\" && selector[selector.length - 1] === \">\" && selector.length >= 3) // Assume that strings that start and end with <> are HTML and skip the regex check\n            match = [\n                null,\n                selector,\n                null\n            ];\n            else match = rquickExpr.exec(selector);\n            // Match html or make sure no context is specified for #id\n            if (match && (match[1] || !context)) {\n                // HANDLE: $(html) -> $(array)\n                if (match[1]) {\n                    context = context instanceof jQuery ? context[0] : context;\n                    // Option to run scripts is true for back-compat\n                    // Intentionally let the error be thrown if parseHTML is not present\n                    jQuery.merge(this, jQuery.parseHTML(match[1], context && context.nodeType ? context.ownerDocument || context : document, true));\n                    // HANDLE: $(html, props)\n                    if (rsingleTag.test(match[1]) && jQuery.isPlainObject(context)) {\n                        for(match in context)// Properties of context are called as methods if possible\n                        if (isFunction(this[match])) this[match](context[match]);\n                        else this.attr(match, context[match]);\n                    }\n                    return this;\n                // HANDLE: $(#id)\n                } else {\n                    elem = document.getElementById(match[2]);\n                    if (elem) {\n                        // Inject the element directly into the jQuery object\n                        this[0] = elem;\n                        this.length = 1;\n                    }\n                    return this;\n                }\n            } else if (!context || context.jquery) return (context || root).find(selector);\n            else return this.constructor(context).find(selector);\n        // HANDLE: $(DOMElement)\n        } else if (selector.nodeType) {\n            this[0] = selector;\n            this.length = 1;\n            return this;\n        // HANDLE: $(function)\n        // Shortcut for document ready\n        } else if (isFunction(selector)) return root.ready !== undefined ? root.ready(selector) : // Execute immediately if ready is not present\n        selector(jQuery);\n        return jQuery.makeArray(selector, this);\n    };\n    // Give the init function the jQuery prototype for later instantiation\n    init.prototype = jQuery.fn;\n    // Initialize central reference\n    rootjQuery = jQuery(document);\n    var rparentsprev = /^(?:parents|prev(?:Until|All))/, // Methods guaranteed to produce a unique set when starting from a unique set\n    guaranteedUnique = {\n        children: true,\n        contents: true,\n        next: true,\n        prev: true\n    };\n    jQuery.fn.extend({\n        has: function(target) {\n            var targets = jQuery(target, this), l = targets.length;\n            return this.filter(function() {\n                var i = 0;\n                for(; i < l; i++){\n                    if (jQuery.contains(this, targets[i])) return true;\n                }\n            });\n        },\n        closest: function(selectors, context) {\n            var cur, i = 0, l = this.length, matched = [], targets = typeof selectors !== \"string\" && jQuery(selectors);\n            // Positional selectors never match, since there's no _selection_ context\n            if (!rneedsContext.test(selectors)) for(; i < l; i++){\n                for(cur = this[i]; cur && cur !== context; cur = cur.parentNode)// Always skip document fragments\n                if (cur.nodeType < 11 && (targets ? targets.index(cur) > -1 : // Don't pass non-elements to jQuery#find\n                cur.nodeType === 1 && jQuery.find.matchesSelector(cur, selectors))) {\n                    matched.push(cur);\n                    break;\n                }\n            }\n            return this.pushStack(matched.length > 1 ? jQuery.uniqueSort(matched) : matched);\n        },\n        // Determine the position of an element within the set\n        index: function(elem) {\n            // No argument, return index in parent\n            if (!elem) return this[0] && this[0].parentNode ? this.first().prevAll().length : -1;\n            // Index in selector\n            if (typeof elem === \"string\") return indexOf.call(jQuery(elem), this[0]);\n            // Locate the position of the desired element\n            return indexOf.call(this, // If it receives a jQuery object, the first element is used\n            elem.jquery ? elem[0] : elem);\n        },\n        add: function(selector, context) {\n            return this.pushStack(jQuery.uniqueSort(jQuery.merge(this.get(), jQuery(selector, context))));\n        },\n        addBack: function(selector) {\n            return this.add(selector == null ? this.prevObject : this.prevObject.filter(selector));\n        }\n    });\n    function sibling(cur, dir) {\n        while((cur = cur[dir]) && cur.nodeType !== 1);\n        return cur;\n    }\n    jQuery.each({\n        parent: function(elem) {\n            var parent = elem.parentNode;\n            return parent && parent.nodeType !== 11 ? parent : null;\n        },\n        parents: function(elem) {\n            return dir(elem, \"parentNode\");\n        },\n        parentsUntil: function(elem, _i, until) {\n            return dir(elem, \"parentNode\", until);\n        },\n        next: function(elem) {\n            return sibling(elem, \"nextSibling\");\n        },\n        prev: function(elem) {\n            return sibling(elem, \"previousSibling\");\n        },\n        nextAll: function(elem) {\n            return dir(elem, \"nextSibling\");\n        },\n        prevAll: function(elem) {\n            return dir(elem, \"previousSibling\");\n        },\n        nextUntil: function(elem, _i, until) {\n            return dir(elem, \"nextSibling\", until);\n        },\n        prevUntil: function(elem, _i, until) {\n            return dir(elem, \"previousSibling\", until);\n        },\n        siblings: function(elem) {\n            return siblings((elem.parentNode || {}).firstChild, elem);\n        },\n        children: function(elem) {\n            return siblings(elem.firstChild);\n        },\n        contents: function(elem) {\n            if (elem.contentDocument != null && // Support: IE 11+\n            // <object> elements with no `data` attribute has an object\n            // `contentDocument` with a `null` prototype.\n            getProto(elem.contentDocument)) return elem.contentDocument;\n            // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n            // Treat the template element as a regular one in browsers that\n            // don't support it.\n            if (nodeName(elem, \"template\")) elem = elem.content || elem;\n            return jQuery.merge([], elem.childNodes);\n        }\n    }, function(name, fn) {\n        jQuery.fn[name] = function(until, selector) {\n            var matched = jQuery.map(this, fn, until);\n            if (name.slice(-5) !== \"Until\") selector = until;\n            if (selector && typeof selector === \"string\") matched = jQuery.filter(selector, matched);\n            if (this.length > 1) {\n                // Remove duplicates\n                if (!guaranteedUnique[name]) jQuery.uniqueSort(matched);\n                // Reverse order for parents* and prev-derivatives\n                if (rparentsprev.test(name)) matched.reverse();\n            }\n            return this.pushStack(matched);\n        };\n    });\n    var rnothtmlwhite = /[^\\x20\\t\\r\\n\\f]+/g;\n    // Convert String-formatted options into Object-formatted ones\n    function createOptions(options) {\n        var object = {};\n        jQuery.each(options.match(rnothtmlwhite) || [], function(_, flag) {\n            object[flag] = true;\n        });\n        return object;\n    }\n    /*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */ jQuery.Callbacks = function(options) {\n        // Convert options from String-formatted to Object-formatted if needed\n        // (we check in cache first)\n        options = typeof options === \"string\" ? createOptions(options) : jQuery.extend({}, options);\n        var firing, // Last fire value for non-forgettable lists\n        memory, // Flag to know if list was already fired\n        fired, // Flag to prevent firing\n        locked, // Actual callback list\n        list = [], // Queue of execution data for repeatable lists\n        queue = [], // Index of currently firing callback (modified by add/remove as needed)\n        firingIndex = -1, // Fire callbacks\n        fire = function() {\n            // Enforce single-firing\n            locked = locked || options.once;\n            // Execute callbacks for all pending executions,\n            // respecting firingIndex overrides and runtime changes\n            fired = firing = true;\n            for(; queue.length; firingIndex = -1){\n                memory = queue.shift();\n                while(++firingIndex < list.length)// Run callback and check for early termination\n                if (list[firingIndex].apply(memory[0], memory[1]) === false && options.stopOnFalse) {\n                    // Jump to end and forget the data so .add doesn't re-fire\n                    firingIndex = list.length;\n                    memory = false;\n                }\n            }\n            // Forget the data if we're done with it\n            if (!options.memory) memory = false;\n            firing = false;\n            // Clean up if we're done firing for good\n            if (locked) {\n                // Keep an empty list if we have data for future add calls\n                if (memory) list = [];\n                else list = \"\";\n            }\n        }, // Actual Callbacks object\n        self = {\n            // Add a callback or a collection of callbacks to the list\n            add: function() {\n                if (list) {\n                    // If we have memory from a past run, we should fire after adding\n                    if (memory && !firing) {\n                        firingIndex = list.length - 1;\n                        queue.push(memory);\n                    }\n                    (function add(args) {\n                        jQuery.each(args, function(_, arg) {\n                            if (isFunction(arg)) {\n                                if (!options.unique || !self.has(arg)) list.push(arg);\n                            } else if (arg && arg.length && toType(arg) !== \"string\") // Inspect recursively\n                            add(arg);\n                        });\n                    })(arguments);\n                    if (memory && !firing) fire();\n                }\n                return this;\n            },\n            // Remove a callback from the list\n            remove: function() {\n                jQuery.each(arguments, function(_, arg) {\n                    var index;\n                    while((index = jQuery.inArray(arg, list, index)) > -1){\n                        list.splice(index, 1);\n                        // Handle firing indexes\n                        if (index <= firingIndex) firingIndex--;\n                    }\n                });\n                return this;\n            },\n            // Check if a given callback is in the list.\n            // If no argument is given, return whether or not list has callbacks attached.\n            has: function(fn) {\n                return fn ? jQuery.inArray(fn, list) > -1 : list.length > 0;\n            },\n            // Remove all callbacks from the list\n            empty: function() {\n                if (list) list = [];\n                return this;\n            },\n            // Disable .fire and .add\n            // Abort any current/pending executions\n            // Clear all callbacks and values\n            disable: function() {\n                locked = queue = [];\n                list = memory = \"\";\n                return this;\n            },\n            disabled: function() {\n                return !list;\n            },\n            // Disable .fire\n            // Also disable .add unless we have memory (since it would have no effect)\n            // Abort any pending executions\n            lock: function() {\n                locked = queue = [];\n                if (!memory && !firing) list = memory = \"\";\n                return this;\n            },\n            locked: function() {\n                return !!locked;\n            },\n            // Call all callbacks with the given context and arguments\n            fireWith: function(context, args) {\n                if (!locked) {\n                    args = args || [];\n                    args = [\n                        context,\n                        args.slice ? args.slice() : args\n                    ];\n                    queue.push(args);\n                    if (!firing) fire();\n                }\n                return this;\n            },\n            // Call all the callbacks with the given arguments\n            fire: function() {\n                self.fireWith(this, arguments);\n                return this;\n            },\n            // To know if the callbacks have already been called at least once\n            fired: function() {\n                return !!fired;\n            }\n        };\n        return self;\n    };\n    function Identity(v) {\n        return v;\n    }\n    function Thrower(ex) {\n        throw ex;\n    }\n    function adoptValue(value, resolve, reject, noValue) {\n        var method;\n        try {\n            // Check for promise aspect first to privilege synchronous behavior\n            if (value && isFunction(method = value.promise)) method.call(value).done(resolve).fail(reject);\n            else if (value && isFunction(method = value.then)) method.call(value, resolve, reject);\n            else // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n            // * false: [ value ].slice( 0 ) => resolve( value )\n            // * true: [ value ].slice( 1 ) => resolve()\n            resolve.apply(undefined, [\n                value\n            ].slice(noValue));\n        // For Promises/A+, convert exceptions into rejections\n        // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n        // Deferred#then to conditionally suppress rejection.\n        } catch (value) {\n            // Support: Android 4.0 only\n            // Strict mode functions invoked without .call/.apply get global-object context\n            reject.apply(undefined, [\n                value\n            ]);\n        }\n    }\n    jQuery.extend({\n        Deferred: function(func) {\n            var tuples = [\n                // action, add listener, callbacks,\n                // ... .then handlers, argument index, [final state]\n                [\n                    \"notify\",\n                    \"progress\",\n                    jQuery.Callbacks(\"memory\"),\n                    jQuery.Callbacks(\"memory\"),\n                    2\n                ],\n                [\n                    \"resolve\",\n                    \"done\",\n                    jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"),\n                    0,\n                    \"resolved\"\n                ],\n                [\n                    \"reject\",\n                    \"fail\",\n                    jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"),\n                    1,\n                    \"rejected\"\n                ]\n            ], state = \"pending\", promise = {\n                state: function() {\n                    return state;\n                },\n                always: function() {\n                    deferred.done(arguments).fail(arguments);\n                    return this;\n                },\n                \"catch\": function(fn) {\n                    return promise.then(null, fn);\n                },\n                // Keep pipe for back-compat\n                pipe: function() {\n                    var fns = arguments;\n                    return jQuery.Deferred(function(newDefer) {\n                        jQuery.each(tuples, function(_i, tuple) {\n                            // Map tuples (progress, done, fail) to arguments (done, fail, progress)\n                            var fn = isFunction(fns[tuple[4]]) && fns[tuple[4]];\n                            // deferred.progress(function() { bind to newDefer or newDefer.notify })\n                            // deferred.done(function() { bind to newDefer or newDefer.resolve })\n                            // deferred.fail(function() { bind to newDefer or newDefer.reject })\n                            deferred[tuple[1]](function() {\n                                var returned = fn && fn.apply(this, arguments);\n                                if (returned && isFunction(returned.promise)) returned.promise().progress(newDefer.notify).done(newDefer.resolve).fail(newDefer.reject);\n                                else newDefer[tuple[0] + \"With\"](this, fn ? [\n                                    returned\n                                ] : arguments);\n                            });\n                        });\n                        fns = null;\n                    }).promise();\n                },\n                then: function(onFulfilled, onRejected, onProgress) {\n                    var maxDepth = 0;\n                    function resolve(depth, deferred, handler, special) {\n                        return function() {\n                            var that = this, args = arguments, mightThrow = function() {\n                                var returned, then;\n                                // Support: Promises/A+ section 2.3.3.3.3\n                                // https://promisesaplus.com/#point-59\n                                // Ignore double-resolution attempts\n                                if (depth < maxDepth) return;\n                                returned = handler.apply(that, args);\n                                // Support: Promises/A+ section 2.3.1\n                                // https://promisesaplus.com/#point-48\n                                if (returned === deferred.promise()) throw new TypeError(\"Thenable self-resolution\");\n                                // Support: Promises/A+ sections 2.3.3.1, 3.5\n                                // https://promisesaplus.com/#point-54\n                                // https://promisesaplus.com/#point-75\n                                // Retrieve `then` only once\n                                then = returned && // Support: Promises/A+ section 2.3.4\n                                // https://promisesaplus.com/#point-64\n                                // Only check objects and functions for thenability\n                                (typeof returned === \"object\" || typeof returned === \"function\") && returned.then;\n                                // Handle a returned thenable\n                                if (isFunction(then)) {\n                                    // Special processors (notify) just wait for resolution\n                                    if (special) then.call(returned, resolve(maxDepth, deferred, Identity, special), resolve(maxDepth, deferred, Thrower, special));\n                                    else {\n                                        // ...and disregard older resolution values\n                                        maxDepth++;\n                                        then.call(returned, resolve(maxDepth, deferred, Identity, special), resolve(maxDepth, deferred, Thrower, special), resolve(maxDepth, deferred, Identity, deferred.notifyWith));\n                                    }\n                                } else {\n                                    // Only substitute handlers pass on context\n                                    // and multiple values (non-spec behavior)\n                                    if (handler !== Identity) {\n                                        that = undefined;\n                                        args = [\n                                            returned\n                                        ];\n                                    }\n                                    // Process the value(s)\n                                    // Default process is resolve\n                                    (special || deferred.resolveWith)(that, args);\n                                }\n                            }, // Only normal processors (resolve) catch and reject exceptions\n                            process = special ? mightThrow : function() {\n                                try {\n                                    mightThrow();\n                                } catch (e) {\n                                    if (jQuery.Deferred.exceptionHook) jQuery.Deferred.exceptionHook(e, process.error);\n                                    // Support: Promises/A+ section 2.3.3.3.4.1\n                                    // https://promisesaplus.com/#point-61\n                                    // Ignore post-resolution exceptions\n                                    if (depth + 1 >= maxDepth) {\n                                        // Only substitute handlers pass on context\n                                        // and multiple values (non-spec behavior)\n                                        if (handler !== Thrower) {\n                                            that = undefined;\n                                            args = [\n                                                e\n                                            ];\n                                        }\n                                        deferred.rejectWith(that, args);\n                                    }\n                                }\n                            };\n                            // Support: Promises/A+ section 2.3.3.3.1\n                            // https://promisesaplus.com/#point-57\n                            // Re-resolve promises immediately to dodge false rejection from\n                            // subsequent errors\n                            if (depth) process();\n                            else {\n                                // Call an optional hook to record the error, in case of exception\n                                // since it's otherwise lost when execution goes async\n                                if (jQuery.Deferred.getErrorHook) process.error = jQuery.Deferred.getErrorHook();\n                                else if (jQuery.Deferred.getStackHook) process.error = jQuery.Deferred.getStackHook();\n                                window1.setTimeout(process);\n                            }\n                        };\n                    }\n                    return jQuery.Deferred(function(newDefer) {\n                        // progress_handlers.add( ... )\n                        tuples[0][3].add(resolve(0, newDefer, isFunction(onProgress) ? onProgress : Identity, newDefer.notifyWith));\n                        // fulfilled_handlers.add( ... )\n                        tuples[1][3].add(resolve(0, newDefer, isFunction(onFulfilled) ? onFulfilled : Identity));\n                        // rejected_handlers.add( ... )\n                        tuples[2][3].add(resolve(0, newDefer, isFunction(onRejected) ? onRejected : Thrower));\n                    }).promise();\n                },\n                // Get a promise for this deferred\n                // If obj is provided, the promise aspect is added to the object\n                promise: function(obj) {\n                    return obj != null ? jQuery.extend(obj, promise) : promise;\n                }\n            }, deferred = {};\n            // Add list-specific methods\n            jQuery.each(tuples, function(i, tuple) {\n                var list = tuple[2], stateString = tuple[5];\n                // promise.progress = list.add\n                // promise.done = list.add\n                // promise.fail = list.add\n                promise[tuple[1]] = list.add;\n                // Handle state\n                if (stateString) list.add(function() {\n                    // state = \"resolved\" (i.e., fulfilled)\n                    // state = \"rejected\"\n                    state = stateString;\n                }, // rejected_callbacks.disable\n                // fulfilled_callbacks.disable\n                tuples[3 - i][2].disable, // rejected_handlers.disable\n                // fulfilled_handlers.disable\n                tuples[3 - i][3].disable, // progress_callbacks.lock\n                tuples[0][2].lock, // progress_handlers.lock\n                tuples[0][3].lock);\n                // progress_handlers.fire\n                // fulfilled_handlers.fire\n                // rejected_handlers.fire\n                list.add(tuple[3].fire);\n                // deferred.notify = function() { deferred.notifyWith(...) }\n                // deferred.resolve = function() { deferred.resolveWith(...) }\n                // deferred.reject = function() { deferred.rejectWith(...) }\n                deferred[tuple[0]] = function() {\n                    deferred[tuple[0] + \"With\"](this === deferred ? undefined : this, arguments);\n                    return this;\n                };\n                // deferred.notifyWith = list.fireWith\n                // deferred.resolveWith = list.fireWith\n                // deferred.rejectWith = list.fireWith\n                deferred[tuple[0] + \"With\"] = list.fireWith;\n            });\n            // Make the deferred a promise\n            promise.promise(deferred);\n            // Call given func if any\n            if (func) func.call(deferred, deferred);\n            // All done!\n            return deferred;\n        },\n        // Deferred helper\n        when: function(singleValue) {\n            var // count of uncompleted subordinates\n            remaining = arguments.length, // count of unprocessed arguments\n            i = remaining, // subordinate fulfillment data\n            resolveContexts = Array(i), resolveValues = slice.call(arguments), // the primary Deferred\n            primary = jQuery.Deferred(), // subordinate callback factory\n            updateFunc = function(i) {\n                return function(value) {\n                    resolveContexts[i] = this;\n                    resolveValues[i] = arguments.length > 1 ? slice.call(arguments) : value;\n                    if (!--remaining) primary.resolveWith(resolveContexts, resolveValues);\n                };\n            };\n            // Single- and empty arguments are adopted like Promise.resolve\n            if (remaining <= 1) {\n                adoptValue(singleValue, primary.done(updateFunc(i)).resolve, primary.reject, !remaining);\n                // Use .then() to unwrap secondary thenables (cf. gh-3000)\n                if (primary.state() === \"pending\" || isFunction(resolveValues[i] && resolveValues[i].then)) return primary.then();\n            }\n            // Multiple arguments are aggregated like Promise.all array elements\n            while(i--)adoptValue(resolveValues[i], updateFunc(i), primary.reject);\n            return primary.promise();\n        }\n    });\n    // These usually indicate a programmer mistake during development,\n    // warn about them ASAP rather than swallowing them by default.\n    var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n    // If `jQuery.Deferred.getErrorHook` is defined, `asyncError` is an error\n    // captured before the async barrier to get the original error cause\n    // which may otherwise be hidden.\n    jQuery.Deferred.exceptionHook = function(error, asyncError) {\n        // Support: IE 8 - 9 only\n        // Console exists when dev tools are open, which can happen at any time\n        if (window1.console && window1.console.warn && error && rerrorNames.test(error.name)) window1.console.warn(\"jQuery.Deferred exception: \" + error.message, error.stack, asyncError);\n    };\n    jQuery.readyException = function(error) {\n        window1.setTimeout(function() {\n            throw error;\n        });\n    };\n    // The deferred used on DOM ready\n    var readyList = jQuery.Deferred();\n    jQuery.fn.ready = function(fn) {\n        readyList.then(fn)// Wrap jQuery.readyException in a function so that the lookup\n        // happens at the time of error handling instead of callback\n        // registration.\n        .catch(function(error) {\n            jQuery.readyException(error);\n        });\n        return this;\n    };\n    jQuery.extend({\n        // Is the DOM ready to be used? Set to true once it occurs.\n        isReady: false,\n        // A counter to track how many items to wait for before\n        // the ready event fires. See trac-6781\n        readyWait: 1,\n        // Handle when the DOM is ready\n        ready: function(wait) {\n            // Abort if there are pending holds or we're already ready\n            if (wait === true ? --jQuery.readyWait : jQuery.isReady) return;\n            // Remember that the DOM is ready\n            jQuery.isReady = true;\n            // If a normal DOM Ready event fired, decrement, and wait if need be\n            if (wait !== true && --jQuery.readyWait > 0) return;\n            // If there are functions bound, to execute\n            readyList.resolveWith(document, [\n                jQuery\n            ]);\n        }\n    });\n    jQuery.ready.then = readyList.then;\n    // The ready event handler and self cleanup method\n    function completed() {\n        document.removeEventListener(\"DOMContentLoaded\", completed);\n        window1.removeEventListener(\"load\", completed);\n        jQuery.ready();\n    }\n    // Catch cases where $(document).ready() is called\n    // after the browser event has already occurred.\n    // Support: IE <=9 - 10 only\n    // Older IE sometimes signals \"interactive\" too soon\n    if (document.readyState === \"complete\" || document.readyState !== \"loading\" && !document.documentElement.doScroll) // Handle it asynchronously to allow scripts the opportunity to delay ready\n    window1.setTimeout(jQuery.ready);\n    else {\n        // Use the handy event callback\n        document.addEventListener(\"DOMContentLoaded\", completed);\n        // A fallback to window.onload, that will always work\n        window1.addEventListener(\"load\", completed);\n    }\n    // Multifunctional method to get and set values of a collection\n    // The value/s can optionally be executed if it's a function\n    var access = function(elems, fn, key, value, chainable, emptyGet, raw) {\n        var i = 0, len = elems.length, bulk = key == null;\n        // Sets many values\n        if (toType(key) === \"object\") {\n            chainable = true;\n            for(i in key)access(elems, fn, i, key[i], true, emptyGet, raw);\n        // Sets one value\n        } else if (value !== undefined) {\n            chainable = true;\n            if (!isFunction(value)) raw = true;\n            if (bulk) {\n                // Bulk operations run against the entire set\n                if (raw) {\n                    fn.call(elems, value);\n                    fn = null;\n                // ...except when executing function values\n                } else {\n                    bulk = fn;\n                    fn = function(elem, _key, value) {\n                        return bulk.call(jQuery(elem), value);\n                    };\n                }\n            }\n            if (fn) for(; i < len; i++)fn(elems[i], key, raw ? value : value.call(elems[i], i, fn(elems[i], key)));\n        }\n        if (chainable) return elems;\n        // Gets\n        if (bulk) return fn.call(elems);\n        return len ? fn(elems[0], key) : emptyGet;\n    };\n    // Matches dashed string for camelizing\n    var rmsPrefix = /^-ms-/, rdashAlpha = /-([a-z])/g;\n    // Used by camelCase as callback to replace()\n    function fcamelCase(_all, letter) {\n        return letter.toUpperCase();\n    }\n    // Convert dashed to camelCase; used by the css and data modules\n    // Support: IE <=9 - 11, Edge 12 - 15\n    // Microsoft forgot to hump their vendor prefix (trac-9572)\n    function camelCase(string) {\n        return string.replace(rmsPrefix, \"ms-\").replace(rdashAlpha, fcamelCase);\n    }\n    var acceptData = function(owner) {\n        // Accepts only:\n        //  - Node\n        //    - Node.ELEMENT_NODE\n        //    - Node.DOCUMENT_NODE\n        //  - Object\n        //    - Any\n        return owner.nodeType === 1 || owner.nodeType === 9 || !+owner.nodeType;\n    };\n    function Data() {\n        this.expando = jQuery.expando + Data.uid++;\n    }\n    Data.uid = 1;\n    Data.prototype = {\n        cache: function(owner) {\n            // Check if the owner object already has a cache\n            var value = owner[this.expando];\n            // If not, create one\n            if (!value) {\n                value = {};\n                // We can accept data for non-element nodes in modern browsers,\n                // but we should not, see trac-8335.\n                // Always return an empty object.\n                if (acceptData(owner)) {\n                    // If it is a node unlikely to be stringify-ed or looped over\n                    // use plain assignment\n                    if (owner.nodeType) owner[this.expando] = value;\n                    else Object.defineProperty(owner, this.expando, {\n                        value: value,\n                        configurable: true\n                    });\n                }\n            }\n            return value;\n        },\n        set: function(owner, data, value) {\n            var prop, cache = this.cache(owner);\n            // Handle: [ owner, key, value ] args\n            // Always use camelCase key (gh-2257)\n            if (typeof data === \"string\") cache[camelCase(data)] = value;\n            else // Copy the properties one-by-one to the cache object\n            for(prop in data)cache[camelCase(prop)] = data[prop];\n            return cache;\n        },\n        get: function(owner, key) {\n            return key === undefined ? this.cache(owner) : // Always use camelCase key (gh-2257)\n            owner[this.expando] && owner[this.expando][camelCase(key)];\n        },\n        access: function(owner, key, value) {\n            // In cases where either:\n            //\n            //   1. No key was specified\n            //   2. A string key was specified, but no value provided\n            //\n            // Take the \"read\" path and allow the get method to determine\n            // which value to return, respectively either:\n            //\n            //   1. The entire cache object\n            //   2. The data stored at the key\n            //\n            if (key === undefined || key && typeof key === \"string\" && value === undefined) return this.get(owner, key);\n            // When the key is not a string, or both a key and value\n            // are specified, set or extend (existing objects) with either:\n            //\n            //   1. An object of properties\n            //   2. A key and value\n            //\n            this.set(owner, key, value);\n            // Since the \"set\" path can have two possible entry points\n            // return the expected data based on which path was taken[*]\n            return value !== undefined ? value : key;\n        },\n        remove: function(owner, key) {\n            var i, cache = owner[this.expando];\n            if (cache === undefined) return;\n            if (key !== undefined) {\n                // Support array or space separated string of keys\n                if (Array.isArray(key)) // If key is an array of keys...\n                // We always set camelCase keys, so remove that.\n                key = key.map(camelCase);\n                else {\n                    key = camelCase(key);\n                    // If a key with the spaces exists, use it.\n                    // Otherwise, create an array by matching non-whitespace\n                    key = key in cache ? [\n                        key\n                    ] : key.match(rnothtmlwhite) || [];\n                }\n                i = key.length;\n                while(i--)delete cache[key[i]];\n            }\n            // Remove the expando if there's no more data\n            if (key === undefined || jQuery.isEmptyObject(cache)) {\n                // Support: Chrome <=35 - 45\n                // Webkit & Blink performance suffers when deleting properties\n                // from DOM nodes, so set to undefined instead\n                // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n                if (owner.nodeType) owner[this.expando] = undefined;\n                else delete owner[this.expando];\n            }\n        },\n        hasData: function(owner) {\n            var cache = owner[this.expando];\n            return cache !== undefined && !jQuery.isEmptyObject(cache);\n        }\n    };\n    var dataPriv = new Data();\n    var dataUser = new Data();\n    //\tImplementation Summary\n    //\n    //\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n    //\t2. Improve the module's maintainability by reducing the storage\n    //\t\tpaths to a single mechanism.\n    //\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n    //\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n    //\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n    //\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n    var rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/, rmultiDash = /[A-Z]/g;\n    function getData(data) {\n        if (data === \"true\") return true;\n        if (data === \"false\") return false;\n        if (data === \"null\") return null;\n        // Only convert to a number if it doesn't change the string\n        if (data === +data + \"\") return +data;\n        if (rbrace.test(data)) return JSON.parse(data);\n        return data;\n    }\n    function dataAttr(elem, key, data) {\n        var name;\n        // If nothing was found internally, try to fetch any\n        // data from the HTML5 data-* attribute\n        if (data === undefined && elem.nodeType === 1) {\n            name = \"data-\" + key.replace(rmultiDash, \"-$&\").toLowerCase();\n            data = elem.getAttribute(name);\n            if (typeof data === \"string\") {\n                try {\n                    data = getData(data);\n                } catch (e) {}\n                // Make sure we set the data so it isn't changed later\n                dataUser.set(elem, key, data);\n            } else data = undefined;\n        }\n        return data;\n    }\n    jQuery.extend({\n        hasData: function(elem) {\n            return dataUser.hasData(elem) || dataPriv.hasData(elem);\n        },\n        data: function(elem, name, data) {\n            return dataUser.access(elem, name, data);\n        },\n        removeData: function(elem, name) {\n            dataUser.remove(elem, name);\n        },\n        // TODO: Now that all calls to _data and _removeData have been replaced\n        // with direct calls to dataPriv methods, these can be deprecated.\n        _data: function(elem, name, data) {\n            return dataPriv.access(elem, name, data);\n        },\n        _removeData: function(elem, name) {\n            dataPriv.remove(elem, name);\n        }\n    });\n    jQuery.fn.extend({\n        data: function(key, value) {\n            var i, name, data, elem = this[0], attrs = elem && elem.attributes;\n            // Gets all values\n            if (key === undefined) {\n                if (this.length) {\n                    data = dataUser.get(elem);\n                    if (elem.nodeType === 1 && !dataPriv.get(elem, \"hasDataAttrs\")) {\n                        i = attrs.length;\n                        while(i--)// Support: IE 11 only\n                        // The attrs elements can be null (trac-14894)\n                        if (attrs[i]) {\n                            name = attrs[i].name;\n                            if (name.indexOf(\"data-\") === 0) {\n                                name = camelCase(name.slice(5));\n                                dataAttr(elem, name, data[name]);\n                            }\n                        }\n                        dataPriv.set(elem, \"hasDataAttrs\", true);\n                    }\n                }\n                return data;\n            }\n            // Sets multiple values\n            if (typeof key === \"object\") return this.each(function() {\n                dataUser.set(this, key);\n            });\n            return access(this, function(value) {\n                var data;\n                // The calling jQuery object (element matches) is not empty\n                // (and therefore has an element appears at this[ 0 ]) and the\n                // `value` parameter was not undefined. An empty jQuery object\n                // will result in `undefined` for elem = this[ 0 ] which will\n                // throw an exception if an attempt to read a data cache is made.\n                if (elem && value === undefined) {\n                    // Attempt to get data from the cache\n                    // The key will always be camelCased in Data\n                    data = dataUser.get(elem, key);\n                    if (data !== undefined) return data;\n                    // Attempt to \"discover\" the data in\n                    // HTML5 custom data-* attrs\n                    data = dataAttr(elem, key);\n                    if (data !== undefined) return data;\n                    // We tried really hard, but the data doesn't exist.\n                    return;\n                }\n                // Set the data...\n                this.each(function() {\n                    // We always store the camelCased key\n                    dataUser.set(this, key, value);\n                });\n            }, null, value, arguments.length > 1, null, true);\n        },\n        removeData: function(key) {\n            return this.each(function() {\n                dataUser.remove(this, key);\n            });\n        }\n    });\n    jQuery.extend({\n        queue: function(elem, type, data) {\n            var queue;\n            if (elem) {\n                type = (type || \"fx\") + \"queue\";\n                queue = dataPriv.get(elem, type);\n                // Speed up dequeue by getting out quickly if this is just a lookup\n                if (data) {\n                    if (!queue || Array.isArray(data)) queue = dataPriv.access(elem, type, jQuery.makeArray(data));\n                    else queue.push(data);\n                }\n                return queue || [];\n            }\n        },\n        dequeue: function(elem, type) {\n            type = type || \"fx\";\n            var queue = jQuery.queue(elem, type), startLength = queue.length, fn = queue.shift(), hooks = jQuery._queueHooks(elem, type), next = function() {\n                jQuery.dequeue(elem, type);\n            };\n            // If the fx queue is dequeued, always remove the progress sentinel\n            if (fn === \"inprogress\") {\n                fn = queue.shift();\n                startLength--;\n            }\n            if (fn) {\n                // Add a progress sentinel to prevent the fx queue from being\n                // automatically dequeued\n                if (type === \"fx\") queue.unshift(\"inprogress\");\n                // Clear up the last queue stop function\n                delete hooks.stop;\n                fn.call(elem, next, hooks);\n            }\n            if (!startLength && hooks) hooks.empty.fire();\n        },\n        // Not public - generate a queueHooks object, or return the current one\n        _queueHooks: function(elem, type) {\n            var key = type + \"queueHooks\";\n            return dataPriv.get(elem, key) || dataPriv.access(elem, key, {\n                empty: jQuery.Callbacks(\"once memory\").add(function() {\n                    dataPriv.remove(elem, [\n                        type + \"queue\",\n                        key\n                    ]);\n                })\n            });\n        }\n    });\n    jQuery.fn.extend({\n        queue: function(type, data) {\n            var setter = 2;\n            if (typeof type !== \"string\") {\n                data = type;\n                type = \"fx\";\n                setter--;\n            }\n            if (arguments.length < setter) return jQuery.queue(this[0], type);\n            return data === undefined ? this : this.each(function() {\n                var queue = jQuery.queue(this, type, data);\n                // Ensure a hooks for this queue\n                jQuery._queueHooks(this, type);\n                if (type === \"fx\" && queue[0] !== \"inprogress\") jQuery.dequeue(this, type);\n            });\n        },\n        dequeue: function(type) {\n            return this.each(function() {\n                jQuery.dequeue(this, type);\n            });\n        },\n        clearQueue: function(type) {\n            return this.queue(type || \"fx\", []);\n        },\n        // Get a promise resolved when queues of a certain type\n        // are emptied (fx is the type by default)\n        promise: function(type, obj) {\n            var tmp, count = 1, defer = jQuery.Deferred(), elements = this, i = this.length, resolve = function() {\n                if (!--count) defer.resolveWith(elements, [\n                    elements\n                ]);\n            };\n            if (typeof type !== \"string\") {\n                obj = type;\n                type = undefined;\n            }\n            type = type || \"fx\";\n            while(i--){\n                tmp = dataPriv.get(elements[i], type + \"queueHooks\");\n                if (tmp && tmp.empty) {\n                    count++;\n                    tmp.empty.add(resolve);\n                }\n            }\n            resolve();\n            return defer.promise(obj);\n        }\n    });\n    var pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\n    var rcssNum = new RegExp(\"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\");\n    var cssExpand = [\n        \"Top\",\n        \"Right\",\n        \"Bottom\",\n        \"Left\"\n    ];\n    var documentElement = document.documentElement;\n    var isAttached = function(elem) {\n        return jQuery.contains(elem.ownerDocument, elem);\n    }, composed = {\n        composed: true\n    };\n    // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only\n    // Check attachment across shadow DOM boundaries when possible (gh-3504)\n    // Support: iOS 10.0-10.2 only\n    // Early iOS 10 versions support `attachShadow` but not `getRootNode`,\n    // leading to errors. We need to check for `getRootNode`.\n    if (documentElement.getRootNode) isAttached = function(elem) {\n        return jQuery.contains(elem.ownerDocument, elem) || elem.getRootNode(composed) === elem.ownerDocument;\n    };\n    var isHiddenWithinTree = function(elem, el) {\n        // isHiddenWithinTree might be called from jQuery#filter function;\n        // in that case, element will be second argument\n        elem = el || elem;\n        // Inline style trumps all\n        return elem.style.display === \"none\" || elem.style.display === \"\" && // Otherwise, check computed style\n        // Support: Firefox <=43 - 45\n        // Disconnected elements can have computed display: none, so first confirm that elem is\n        // in the document.\n        isAttached(elem) && jQuery.css(elem, \"display\") === \"none\";\n    };\n    function adjustCSS(elem, prop, valueParts, tween) {\n        var adjusted, scale, maxIterations = 20, currentValue = tween ? function() {\n            return tween.cur();\n        } : function() {\n            return jQuery.css(elem, prop, \"\");\n        }, initial = currentValue(), unit = valueParts && valueParts[3] || (jQuery.cssNumber[prop] ? \"\" : \"px\"), // Starting value computation is required for potential unit mismatches\n        initialInUnit = elem.nodeType && (jQuery.cssNumber[prop] || unit !== \"px\" && +initial) && rcssNum.exec(jQuery.css(elem, prop));\n        if (initialInUnit && initialInUnit[3] !== unit) {\n            // Support: Firefox <=54\n            // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n            initial = initial / 2;\n            // Trust units reported by jQuery.css\n            unit = unit || initialInUnit[3];\n            // Iteratively approximate from a nonzero starting point\n            initialInUnit = +initial || 1;\n            while(maxIterations--){\n                // Evaluate and update our best guess (doubling guesses that zero out).\n                // Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n                jQuery.style(elem, prop, initialInUnit + unit);\n                if ((1 - scale) * (1 - (scale = currentValue() / initial || 0.5)) <= 0) maxIterations = 0;\n                initialInUnit = initialInUnit / scale;\n            }\n            initialInUnit = initialInUnit * 2;\n            jQuery.style(elem, prop, initialInUnit + unit);\n            // Make sure we update the tween properties later on\n            valueParts = valueParts || [];\n        }\n        if (valueParts) {\n            initialInUnit = +initialInUnit || +initial || 0;\n            // Apply relative offset (+=/-=) if specified\n            adjusted = valueParts[1] ? initialInUnit + (valueParts[1] + 1) * valueParts[2] : +valueParts[2];\n            if (tween) {\n                tween.unit = unit;\n                tween.start = initialInUnit;\n                tween.end = adjusted;\n            }\n        }\n        return adjusted;\n    }\n    var defaultDisplayMap = {};\n    function getDefaultDisplay(elem) {\n        var temp, doc = elem.ownerDocument, nodeName = elem.nodeName, display = defaultDisplayMap[nodeName];\n        if (display) return display;\n        temp = doc.body.appendChild(doc.createElement(nodeName));\n        display = jQuery.css(temp, \"display\");\n        temp.parentNode.removeChild(temp);\n        if (display === \"none\") display = \"block\";\n        defaultDisplayMap[nodeName] = display;\n        return display;\n    }\n    function showHide(elements, show) {\n        var display, elem, values = [], index = 0, length = elements.length;\n        // Determine new display value for elements that need to change\n        for(; index < length; index++){\n            elem = elements[index];\n            if (!elem.style) continue;\n            display = elem.style.display;\n            if (show) {\n                // Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n                // check is required in this first loop unless we have a nonempty display value (either\n                // inline or about-to-be-restored)\n                if (display === \"none\") {\n                    values[index] = dataPriv.get(elem, \"display\") || null;\n                    if (!values[index]) elem.style.display = \"\";\n                }\n                if (elem.style.display === \"\" && isHiddenWithinTree(elem)) values[index] = getDefaultDisplay(elem);\n            } else if (display !== \"none\") {\n                values[index] = \"none\";\n                // Remember what we're overwriting\n                dataPriv.set(elem, \"display\", display);\n            }\n        }\n        // Set the display of the elements in a second loop to avoid constant reflow\n        for(index = 0; index < length; index++)if (values[index] != null) elements[index].style.display = values[index];\n        return elements;\n    }\n    jQuery.fn.extend({\n        show: function() {\n            return showHide(this, true);\n        },\n        hide: function() {\n            return showHide(this);\n        },\n        toggle: function(state) {\n            if (typeof state === \"boolean\") return state ? this.show() : this.hide();\n            return this.each(function() {\n                if (isHiddenWithinTree(this)) jQuery(this).show();\n                else jQuery(this).hide();\n            });\n        }\n    });\n    var rcheckableType = /^(?:checkbox|radio)$/i;\n    var rtagName = /<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)/i;\n    var rscriptType = /^$|^module$|\\/(?:java|ecma)script/i;\n    (function() {\n        var fragment = document.createDocumentFragment(), div = fragment.appendChild(document.createElement(\"div\")), input = document.createElement(\"input\");\n        // Support: Android 4.0 - 4.3 only\n        // Check state lost if the name is set (trac-11217)\n        // Support: Windows Web Apps (WWA)\n        // `name` and `type` must use .setAttribute for WWA (trac-14901)\n        input.setAttribute(\"type\", \"radio\");\n        input.setAttribute(\"checked\", \"checked\");\n        input.setAttribute(\"name\", \"t\");\n        div.appendChild(input);\n        // Support: Android <=4.1 only\n        // Older WebKit doesn't clone checked state correctly in fragments\n        support.checkClone = div.cloneNode(true).cloneNode(true).lastChild.checked;\n        // Support: IE <=11 only\n        // Make sure textarea (and checkbox) defaultValue is properly cloned\n        div.innerHTML = \"<textarea>x</textarea>\";\n        support.noCloneChecked = !!div.cloneNode(true).lastChild.defaultValue;\n        // Support: IE <=9 only\n        // IE <=9 replaces <option> tags with their contents when inserted outside of\n        // the select element.\n        div.innerHTML = \"<option></option>\";\n        support.option = !!div.lastChild;\n    })();\n    // We have to close these tags to support XHTML (trac-13200)\n    var wrapMap = {\n        // XHTML parsers do not magically insert elements in the\n        // same way that tag soup parsers do. So we cannot shorten\n        // this by omitting <tbody> or other required elements.\n        thead: [\n            1,\n            \"<table>\",\n            \"</table>\"\n        ],\n        col: [\n            2,\n            \"<table><colgroup>\",\n            \"</colgroup></table>\"\n        ],\n        tr: [\n            2,\n            \"<table><tbody>\",\n            \"</tbody></table>\"\n        ],\n        td: [\n            3,\n            \"<table><tbody><tr>\",\n            \"</tr></tbody></table>\"\n        ],\n        _default: [\n            0,\n            \"\",\n            \"\"\n        ]\n    };\n    wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\n    wrapMap.th = wrapMap.td;\n    // Support: IE <=9 only\n    if (!support.option) wrapMap.optgroup = wrapMap.option = [\n        1,\n        \"<select multiple='multiple'>\",\n        \"</select>\"\n    ];\n    function getAll(context, tag) {\n        // Support: IE <=9 - 11 only\n        // Use typeof to avoid zero-argument method invocation on host objects (trac-15151)\n        var ret;\n        if (typeof context.getElementsByTagName !== \"undefined\") ret = context.getElementsByTagName(tag || \"*\");\n        else if (typeof context.querySelectorAll !== \"undefined\") ret = context.querySelectorAll(tag || \"*\");\n        else ret = [];\n        if (tag === undefined || tag && nodeName(context, tag)) return jQuery.merge([\n            context\n        ], ret);\n        return ret;\n    }\n    // Mark scripts as having already been evaluated\n    function setGlobalEval(elems, refElements) {\n        var i = 0, l = elems.length;\n        for(; i < l; i++)dataPriv.set(elems[i], \"globalEval\", !refElements || dataPriv.get(refElements[i], \"globalEval\"));\n    }\n    var rhtml = /<|&#?\\w+;/;\n    function buildFragment(elems, context, scripts, selection, ignored) {\n        var elem, tmp, tag, wrap, attached, j, fragment = context.createDocumentFragment(), nodes = [], i = 0, l = elems.length;\n        for(; i < l; i++){\n            elem = elems[i];\n            if (elem || elem === 0) {\n                // Add nodes directly\n                if (toType(elem) === \"object\") // Support: Android <=4.0 only, PhantomJS 1 only\n                // push.apply(_, arraylike) throws on ancient WebKit\n                jQuery.merge(nodes, elem.nodeType ? [\n                    elem\n                ] : elem);\n                else if (!rhtml.test(elem)) nodes.push(context.createTextNode(elem));\n                else {\n                    tmp = tmp || fragment.appendChild(context.createElement(\"div\"));\n                    // Deserialize a standard representation\n                    tag = (rtagName.exec(elem) || [\n                        \"\",\n                        \"\"\n                    ])[1].toLowerCase();\n                    wrap = wrapMap[tag] || wrapMap._default;\n                    tmp.innerHTML = wrap[1] + jQuery.htmlPrefilter(elem) + wrap[2];\n                    // Descend through wrappers to the right content\n                    j = wrap[0];\n                    while(j--)tmp = tmp.lastChild;\n                    // Support: Android <=4.0 only, PhantomJS 1 only\n                    // push.apply(_, arraylike) throws on ancient WebKit\n                    jQuery.merge(nodes, tmp.childNodes);\n                    // Remember the top-level container\n                    tmp = fragment.firstChild;\n                    // Ensure the created nodes are orphaned (trac-12392)\n                    tmp.textContent = \"\";\n                }\n            }\n        }\n        // Remove wrapper from fragment\n        fragment.textContent = \"\";\n        i = 0;\n        while(elem = nodes[i++]){\n            // Skip elements already in the context collection (trac-4087)\n            if (selection && jQuery.inArray(elem, selection) > -1) {\n                if (ignored) ignored.push(elem);\n                continue;\n            }\n            attached = isAttached(elem);\n            // Append to fragment\n            tmp = getAll(fragment.appendChild(elem), \"script\");\n            // Preserve script evaluation history\n            if (attached) setGlobalEval(tmp);\n            // Capture executables\n            if (scripts) {\n                j = 0;\n                while(elem = tmp[j++])if (rscriptType.test(elem.type || \"\")) scripts.push(elem);\n            }\n        }\n        return fragment;\n    }\n    var rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n    function returnTrue() {\n        return true;\n    }\n    function returnFalse() {\n        return false;\n    }\n    function on(elem, types, selector, data, fn, one) {\n        var origFn, type;\n        // Types can be a map of types/handlers\n        if (typeof types === \"object\") {\n            // ( types-Object, selector, data )\n            if (typeof selector !== \"string\") {\n                // ( types-Object, data )\n                data = data || selector;\n                selector = undefined;\n            }\n            for(type in types)on(elem, type, selector, data, types[type], one);\n            return elem;\n        }\n        if (data == null && fn == null) {\n            // ( types, fn )\n            fn = selector;\n            data = selector = undefined;\n        } else if (fn == null) {\n            if (typeof selector === \"string\") {\n                // ( types, selector, fn )\n                fn = data;\n                data = undefined;\n            } else {\n                // ( types, data, fn )\n                fn = data;\n                data = selector;\n                selector = undefined;\n            }\n        }\n        if (fn === false) fn = returnFalse;\n        else if (!fn) return elem;\n        if (one === 1) {\n            origFn = fn;\n            fn = function(event) {\n                // Can use an empty set, since event contains the info\n                jQuery().off(event);\n                return origFn.apply(this, arguments);\n            };\n            // Use same guid so caller can remove using origFn\n            fn.guid = origFn.guid || (origFn.guid = jQuery.guid++);\n        }\n        return elem.each(function() {\n            jQuery.event.add(this, types, fn, data, selector);\n        });\n    }\n    /*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */ jQuery.event = {\n        global: {},\n        add: function(elem, types, handler, data, selector) {\n            var handleObjIn, eventHandle, tmp, events, t, handleObj, special, handlers, type, namespaces, origType, elemData = dataPriv.get(elem);\n            // Only attach events to objects that accept data\n            if (!acceptData(elem)) return;\n            // Caller can pass in an object of custom data in lieu of the handler\n            if (handler.handler) {\n                handleObjIn = handler;\n                handler = handleObjIn.handler;\n                selector = handleObjIn.selector;\n            }\n            // Ensure that invalid selectors throw exceptions at attach time\n            // Evaluate against documentElement in case elem is a non-element node (e.g., document)\n            if (selector) jQuery.find.matchesSelector(documentElement, selector);\n            // Make sure that the handler has a unique ID, used to find/remove it later\n            if (!handler.guid) handler.guid = jQuery.guid++;\n            // Init the element's event structure and main handler, if this is the first\n            if (!(events = elemData.events)) events = elemData.events = Object.create(null);\n            if (!(eventHandle = elemData.handle)) eventHandle = elemData.handle = function(e) {\n                // Discard the second event of a jQuery.event.trigger() and\n                // when an event is called after a page has unloaded\n                return typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ? jQuery.event.dispatch.apply(elem, arguments) : undefined;\n            };\n            // Handle multiple events separated by a space\n            types = (types || \"\").match(rnothtmlwhite) || [\n                \"\"\n            ];\n            t = types.length;\n            while(t--){\n                tmp = rtypenamespace.exec(types[t]) || [];\n                type = origType = tmp[1];\n                namespaces = (tmp[2] || \"\").split(\".\").sort();\n                // There *must* be a type, no attaching namespace-only handlers\n                if (!type) continue;\n                // If event changes its type, use the special event handlers for the changed type\n                special = jQuery.event.special[type] || {};\n                // If selector defined, determine special event api type, otherwise given type\n                type = (selector ? special.delegateType : special.bindType) || type;\n                // Update special based on newly reset type\n                special = jQuery.event.special[type] || {};\n                // handleObj is passed to all event handlers\n                handleObj = jQuery.extend({\n                    type: type,\n                    origType: origType,\n                    data: data,\n                    handler: handler,\n                    guid: handler.guid,\n                    selector: selector,\n                    needsContext: selector && jQuery.expr.match.needsContext.test(selector),\n                    namespace: namespaces.join(\".\")\n                }, handleObjIn);\n                // Init the event handler queue if we're the first\n                if (!(handlers = events[type])) {\n                    handlers = events[type] = [];\n                    handlers.delegateCount = 0;\n                    // Only use addEventListener if the special events handler returns false\n                    if (!special.setup || special.setup.call(elem, data, namespaces, eventHandle) === false) {\n                        if (elem.addEventListener) elem.addEventListener(type, eventHandle);\n                    }\n                }\n                if (special.add) {\n                    special.add.call(elem, handleObj);\n                    if (!handleObj.handler.guid) handleObj.handler.guid = handler.guid;\n                }\n                // Add to the element's handler list, delegates in front\n                if (selector) handlers.splice(handlers.delegateCount++, 0, handleObj);\n                else handlers.push(handleObj);\n                // Keep track of which events have ever been used, for event optimization\n                jQuery.event.global[type] = true;\n            }\n        },\n        // Detach an event or set of events from an element\n        remove: function(elem, types, handler, selector, mappedTypes) {\n            var j, origCount, tmp, events, t, handleObj, special, handlers, type, namespaces, origType, elemData = dataPriv.hasData(elem) && dataPriv.get(elem);\n            if (!elemData || !(events = elemData.events)) return;\n            // Once for each type.namespace in types; type may be omitted\n            types = (types || \"\").match(rnothtmlwhite) || [\n                \"\"\n            ];\n            t = types.length;\n            while(t--){\n                tmp = rtypenamespace.exec(types[t]) || [];\n                type = origType = tmp[1];\n                namespaces = (tmp[2] || \"\").split(\".\").sort();\n                // Unbind all events (on this namespace, if provided) for the element\n                if (!type) {\n                    for(type in events)jQuery.event.remove(elem, type + types[t], handler, selector, true);\n                    continue;\n                }\n                special = jQuery.event.special[type] || {};\n                type = (selector ? special.delegateType : special.bindType) || type;\n                handlers = events[type] || [];\n                tmp = tmp[2] && new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\");\n                // Remove matching events\n                origCount = j = handlers.length;\n                while(j--){\n                    handleObj = handlers[j];\n                    if ((mappedTypes || origType === handleObj.origType) && (!handler || handler.guid === handleObj.guid) && (!tmp || tmp.test(handleObj.namespace)) && (!selector || selector === handleObj.selector || selector === \"**\" && handleObj.selector)) {\n                        handlers.splice(j, 1);\n                        if (handleObj.selector) handlers.delegateCount--;\n                        if (special.remove) special.remove.call(elem, handleObj);\n                    }\n                }\n                // Remove generic event handler if we removed something and no more handlers exist\n                // (avoids potential for endless recursion during removal of special event handlers)\n                if (origCount && !handlers.length) {\n                    if (!special.teardown || special.teardown.call(elem, namespaces, elemData.handle) === false) jQuery.removeEvent(elem, type, elemData.handle);\n                    delete events[type];\n                }\n            }\n            // Remove data and the expando if it's no longer used\n            if (jQuery.isEmptyObject(events)) dataPriv.remove(elem, \"handle events\");\n        },\n        dispatch: function(nativeEvent) {\n            var i, j, ret, matched, handleObj, handlerQueue, args = new Array(arguments.length), // Make a writable jQuery.Event from the native event object\n            event = jQuery.event.fix(nativeEvent), handlers = (dataPriv.get(this, \"events\") || Object.create(null))[event.type] || [], special = jQuery.event.special[event.type] || {};\n            // Use the fix-ed jQuery.Event rather than the (read-only) native event\n            args[0] = event;\n            for(i = 1; i < arguments.length; i++)args[i] = arguments[i];\n            event.delegateTarget = this;\n            // Call the preDispatch hook for the mapped type, and let it bail if desired\n            if (special.preDispatch && special.preDispatch.call(this, event) === false) return;\n            // Determine handlers\n            handlerQueue = jQuery.event.handlers.call(this, event, handlers);\n            // Run delegates first; they may want to stop propagation beneath us\n            i = 0;\n            while((matched = handlerQueue[i++]) && !event.isPropagationStopped()){\n                event.currentTarget = matched.elem;\n                j = 0;\n                while((handleObj = matched.handlers[j++]) && !event.isImmediatePropagationStopped())// If the event is namespaced, then each handler is only invoked if it is\n                // specially universal or its namespaces are a superset of the event's.\n                if (!event.rnamespace || handleObj.namespace === false || event.rnamespace.test(handleObj.namespace)) {\n                    event.handleObj = handleObj;\n                    event.data = handleObj.data;\n                    ret = ((jQuery.event.special[handleObj.origType] || {}).handle || handleObj.handler).apply(matched.elem, args);\n                    if (ret !== undefined) {\n                        if ((event.result = ret) === false) {\n                            event.preventDefault();\n                            event.stopPropagation();\n                        }\n                    }\n                }\n            }\n            // Call the postDispatch hook for the mapped type\n            if (special.postDispatch) special.postDispatch.call(this, event);\n            return event.result;\n        },\n        handlers: function(event, handlers) {\n            var i, handleObj, sel, matchedHandlers, matchedSelectors, handlerQueue = [], delegateCount = handlers.delegateCount, cur = event.target;\n            // Find delegate handlers\n            if (delegateCount && // Support: IE <=9\n            // Black-hole SVG <use> instance trees (trac-13180)\n            cur.nodeType && // Support: Firefox <=42\n            // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n            // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n            // Support: IE 11 only\n            // ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n            !(event.type === \"click\" && event.button >= 1)) {\n                for(; cur !== this; cur = cur.parentNode || this)// Don't check non-elements (trac-13208)\n                // Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)\n                if (cur.nodeType === 1 && !(event.type === \"click\" && cur.disabled === true)) {\n                    matchedHandlers = [];\n                    matchedSelectors = {};\n                    for(i = 0; i < delegateCount; i++){\n                        handleObj = handlers[i];\n                        // Don't conflict with Object.prototype properties (trac-13203)\n                        sel = handleObj.selector + \" \";\n                        if (matchedSelectors[sel] === undefined) matchedSelectors[sel] = handleObj.needsContext ? jQuery(sel, this).index(cur) > -1 : jQuery.find(sel, this, null, [\n                            cur\n                        ]).length;\n                        if (matchedSelectors[sel]) matchedHandlers.push(handleObj);\n                    }\n                    if (matchedHandlers.length) handlerQueue.push({\n                        elem: cur,\n                        handlers: matchedHandlers\n                    });\n                }\n            }\n            // Add the remaining (directly-bound) handlers\n            cur = this;\n            if (delegateCount < handlers.length) handlerQueue.push({\n                elem: cur,\n                handlers: handlers.slice(delegateCount)\n            });\n            return handlerQueue;\n        },\n        addProp: function(name, hook) {\n            Object.defineProperty(jQuery.Event.prototype, name, {\n                enumerable: true,\n                configurable: true,\n                get: isFunction(hook) ? function() {\n                    if (this.originalEvent) return hook(this.originalEvent);\n                } : function() {\n                    if (this.originalEvent) return this.originalEvent[name];\n                },\n                set: function(value) {\n                    Object.defineProperty(this, name, {\n                        enumerable: true,\n                        configurable: true,\n                        writable: true,\n                        value: value\n                    });\n                }\n            });\n        },\n        fix: function(originalEvent) {\n            return originalEvent[jQuery.expando] ? originalEvent : new jQuery.Event(originalEvent);\n        },\n        special: {\n            load: {\n                // Prevent triggered image.load events from bubbling to window.load\n                noBubble: true\n            },\n            click: {\n                // Utilize native event to ensure correct state for checkable inputs\n                setup: function(data) {\n                    // For mutual compressibility with _default, replace `this` access with a local var.\n                    // `|| data` is dead code meant only to preserve the variable through minification.\n                    var el = this || data;\n                    // Claim the first handler\n                    if (rcheckableType.test(el.type) && el.click && nodeName(el, \"input\")) // dataPriv.set( el, \"click\", ... )\n                    leverageNative(el, \"click\", true);\n                    // Return false to allow normal processing in the caller\n                    return false;\n                },\n                trigger: function(data) {\n                    // For mutual compressibility with _default, replace `this` access with a local var.\n                    // `|| data` is dead code meant only to preserve the variable through minification.\n                    var el = this || data;\n                    // Force setup before triggering a click\n                    if (rcheckableType.test(el.type) && el.click && nodeName(el, \"input\")) leverageNative(el, \"click\");\n                    // Return non-false to allow normal event-path propagation\n                    return true;\n                },\n                // For cross-browser consistency, suppress native .click() on links\n                // Also prevent it if we're currently inside a leveraged native-event stack\n                _default: function(event) {\n                    var target = event.target;\n                    return rcheckableType.test(target.type) && target.click && nodeName(target, \"input\") && dataPriv.get(target, \"click\") || nodeName(target, \"a\");\n                }\n            },\n            beforeunload: {\n                postDispatch: function(event) {\n                    // Support: Firefox 20+\n                    // Firefox doesn't alert if the returnValue field is not set.\n                    if (event.result !== undefined && event.originalEvent) event.originalEvent.returnValue = event.result;\n                }\n            }\n        }\n    };\n    // Ensure the presence of an event listener that handles manually-triggered\n    // synthetic events by interrupting progress until reinvoked in response to\n    // *native* events that it fires directly, ensuring that state changes have\n    // already occurred before other listeners are invoked.\n    function leverageNative(el, type, isSetup) {\n        // Missing `isSetup` indicates a trigger call, which must force setup through jQuery.event.add\n        if (!isSetup) {\n            if (dataPriv.get(el, type) === undefined) jQuery.event.add(el, type, returnTrue);\n            return;\n        }\n        // Register the controller as a special universal handler for all event namespaces\n        dataPriv.set(el, type, false);\n        jQuery.event.add(el, type, {\n            namespace: false,\n            handler: function(event) {\n                var result, saved = dataPriv.get(this, type);\n                if (event.isTrigger & 1 && this[type]) {\n                    // Interrupt processing of the outer synthetic .trigger()ed event\n                    if (!saved) {\n                        // Store arguments for use when handling the inner native event\n                        // There will always be at least one argument (an event object), so this array\n                        // will not be confused with a leftover capture object.\n                        saved = slice.call(arguments);\n                        dataPriv.set(this, type, saved);\n                        // Trigger the native event and capture its result\n                        this[type]();\n                        result = dataPriv.get(this, type);\n                        dataPriv.set(this, type, false);\n                        if (saved !== result) {\n                            // Cancel the outer synthetic event\n                            event.stopImmediatePropagation();\n                            event.preventDefault();\n                            return result;\n                        }\n                    // If this is an inner synthetic event for an event with a bubbling surrogate\n                    // (focus or blur), assume that the surrogate already propagated from triggering\n                    // the native event and prevent that from happening again here.\n                    // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the\n                    // bubbling surrogate propagates *after* the non-bubbling base), but that seems\n                    // less bad than duplication.\n                    } else if ((jQuery.event.special[type] || {}).delegateType) event.stopPropagation();\n                // If this is a native event triggered above, everything is now in order\n                // Fire an inner synthetic event with the original arguments\n                } else if (saved) {\n                    // ...and capture the result\n                    dataPriv.set(this, type, jQuery.event.trigger(saved[0], saved.slice(1), this));\n                    // Abort handling of the native event by all jQuery handlers while allowing\n                    // native handlers on the same element to run. On target, this is achieved\n                    // by stopping immediate propagation just on the jQuery event. However,\n                    // the native event is re-wrapped by a jQuery one on each level of the\n                    // propagation so the only way to stop it for jQuery is to stop it for\n                    // everyone via native `stopPropagation()`. This is not a problem for\n                    // focus/blur which don't bubble, but it does also stop click on checkboxes\n                    // and radios. We accept this limitation.\n                    event.stopPropagation();\n                    event.isImmediatePropagationStopped = returnTrue;\n                }\n            }\n        });\n    }\n    jQuery.removeEvent = function(elem, type, handle) {\n        // This \"if\" is needed for plain objects\n        if (elem.removeEventListener) elem.removeEventListener(type, handle);\n    };\n    jQuery.Event = function(src, props) {\n        // Allow instantiation without the 'new' keyword\n        if (!(this instanceof jQuery.Event)) return new jQuery.Event(src, props);\n        // Event object\n        if (src && src.type) {\n            this.originalEvent = src;\n            this.type = src.type;\n            // Events bubbling up the document may have been marked as prevented\n            // by a handler lower down the tree; reflect the correct value.\n            this.isDefaultPrevented = src.defaultPrevented || src.defaultPrevented === undefined && // Support: Android <=2.3 only\n            src.returnValue === false ? returnTrue : returnFalse;\n            // Create target properties\n            // Support: Safari <=6 - 7 only\n            // Target should not be a text node (trac-504, trac-13143)\n            this.target = src.target && src.target.nodeType === 3 ? src.target.parentNode : src.target;\n            this.currentTarget = src.currentTarget;\n            this.relatedTarget = src.relatedTarget;\n        // Event type\n        } else this.type = src;\n        // Put explicitly provided properties onto the event object\n        if (props) jQuery.extend(this, props);\n        // Create a timestamp if incoming event doesn't have one\n        this.timeStamp = src && src.timeStamp || Date.now();\n        // Mark it as fixed\n        this[jQuery.expando] = true;\n    };\n    // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n    // https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\n    jQuery.Event.prototype = {\n        constructor: jQuery.Event,\n        isDefaultPrevented: returnFalse,\n        isPropagationStopped: returnFalse,\n        isImmediatePropagationStopped: returnFalse,\n        isSimulated: false,\n        preventDefault: function() {\n            var e = this.originalEvent;\n            this.isDefaultPrevented = returnTrue;\n            if (e && !this.isSimulated) e.preventDefault();\n        },\n        stopPropagation: function() {\n            var e = this.originalEvent;\n            this.isPropagationStopped = returnTrue;\n            if (e && !this.isSimulated) e.stopPropagation();\n        },\n        stopImmediatePropagation: function() {\n            var e = this.originalEvent;\n            this.isImmediatePropagationStopped = returnTrue;\n            if (e && !this.isSimulated) e.stopImmediatePropagation();\n            this.stopPropagation();\n        }\n    };\n    // Includes all common event props including KeyEvent and MouseEvent specific props\n    jQuery.each({\n        altKey: true,\n        bubbles: true,\n        cancelable: true,\n        changedTouches: true,\n        ctrlKey: true,\n        detail: true,\n        eventPhase: true,\n        metaKey: true,\n        pageX: true,\n        pageY: true,\n        shiftKey: true,\n        view: true,\n        \"char\": true,\n        code: true,\n        charCode: true,\n        key: true,\n        keyCode: true,\n        button: true,\n        buttons: true,\n        clientX: true,\n        clientY: true,\n        offsetX: true,\n        offsetY: true,\n        pointerId: true,\n        pointerType: true,\n        screenX: true,\n        screenY: true,\n        targetTouches: true,\n        toElement: true,\n        touches: true,\n        which: true\n    }, jQuery.event.addProp);\n    jQuery.each({\n        focus: \"focusin\",\n        blur: \"focusout\"\n    }, function(type, delegateType) {\n        function focusMappedHandler(nativeEvent) {\n            if (document.documentMode) {\n                // Support: IE 11+\n                // Attach a single focusin/focusout handler on the document while someone wants\n                // focus/blur. This is because the former are synchronous in IE while the latter\n                // are async. In other browsers, all those handlers are invoked synchronously.\n                // `handle` from private data would already wrap the event, but we need\n                // to change the `type` here.\n                var handle = dataPriv.get(this, \"handle\"), event = jQuery.event.fix(nativeEvent);\n                event.type = nativeEvent.type === \"focusin\" ? \"focus\" : \"blur\";\n                event.isSimulated = true;\n                // First, handle focusin/focusout\n                handle(nativeEvent);\n                // ...then, handle focus/blur\n                //\n                // focus/blur don't bubble while focusin/focusout do; simulate the former by only\n                // invoking the handler at the lower level.\n                if (event.target === event.currentTarget) // The setup part calls `leverageNative`, which, in turn, calls\n                // `jQuery.event.add`, so event handle will already have been set\n                // by this point.\n                handle(event);\n            } else // For non-IE browsers, attach a single capturing handler on the document\n            // while someone wants focusin/focusout.\n            jQuery.event.simulate(delegateType, nativeEvent.target, jQuery.event.fix(nativeEvent));\n        }\n        jQuery.event.special[type] = {\n            // Utilize native event if possible so blur/focus sequence is correct\n            setup: function() {\n                var attaches;\n                // Claim the first handler\n                // dataPriv.set( this, \"focus\", ... )\n                // dataPriv.set( this, \"blur\", ... )\n                leverageNative(this, type, true);\n                if (document.documentMode) {\n                    // Support: IE 9 - 11+\n                    // We use the same native handler for focusin & focus (and focusout & blur)\n                    // so we need to coordinate setup & teardown parts between those events.\n                    // Use `delegateType` as the key as `type` is already used by `leverageNative`.\n                    attaches = dataPriv.get(this, delegateType);\n                    if (!attaches) this.addEventListener(delegateType, focusMappedHandler);\n                    dataPriv.set(this, delegateType, (attaches || 0) + 1);\n                } else // Return false to allow normal processing in the caller\n                return false;\n            },\n            trigger: function() {\n                // Force setup before trigger\n                leverageNative(this, type);\n                // Return non-false to allow normal event-path propagation\n                return true;\n            },\n            teardown: function() {\n                var attaches;\n                if (document.documentMode) {\n                    attaches = dataPriv.get(this, delegateType) - 1;\n                    if (!attaches) {\n                        this.removeEventListener(delegateType, focusMappedHandler);\n                        dataPriv.remove(this, delegateType);\n                    } else dataPriv.set(this, delegateType, attaches);\n                } else // Return false to indicate standard teardown should be applied\n                return false;\n            },\n            // Suppress native focus or blur if we're currently inside\n            // a leveraged native-event stack\n            _default: function(event) {\n                return dataPriv.get(event.target, type);\n            },\n            delegateType: delegateType\n        };\n        // Support: Firefox <=44\n        // Firefox doesn't have focus(in | out) events\n        // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n        //\n        // Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n        // focus(in | out) events fire after focus & blur events,\n        // which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n        // Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\n        //\n        // Support: IE 9 - 11+\n        // To preserve relative focusin/focus & focusout/blur event order guaranteed on the 3.x branch,\n        // attach a single handler for both events in IE.\n        jQuery.event.special[delegateType] = {\n            setup: function() {\n                // Handle: regular nodes (via `this.ownerDocument`), window\n                // (via `this.document`) & document (via `this`).\n                var doc = this.ownerDocument || this.document || this, dataHolder = document.documentMode ? this : doc, attaches = dataPriv.get(dataHolder, delegateType);\n                // Support: IE 9 - 11+\n                // We use the same native handler for focusin & focus (and focusout & blur)\n                // so we need to coordinate setup & teardown parts between those events.\n                // Use `delegateType` as the key as `type` is already used by `leverageNative`.\n                if (!attaches) {\n                    if (document.documentMode) this.addEventListener(delegateType, focusMappedHandler);\n                    else doc.addEventListener(type, focusMappedHandler, true);\n                }\n                dataPriv.set(dataHolder, delegateType, (attaches || 0) + 1);\n            },\n            teardown: function() {\n                var doc = this.ownerDocument || this.document || this, dataHolder = document.documentMode ? this : doc, attaches = dataPriv.get(dataHolder, delegateType) - 1;\n                if (!attaches) {\n                    if (document.documentMode) this.removeEventListener(delegateType, focusMappedHandler);\n                    else doc.removeEventListener(type, focusMappedHandler, true);\n                    dataPriv.remove(dataHolder, delegateType);\n                } else dataPriv.set(dataHolder, delegateType, attaches);\n            }\n        };\n    });\n    // Create mouseenter/leave events using mouseover/out and event-time checks\n    // so that event delegation works in jQuery.\n    // Do the same for pointerenter/pointerleave and pointerover/pointerout\n    //\n    // Support: Safari 7 only\n    // Safari sends mouseenter too often; see:\n    // https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n    // for the description of the bug (it existed in older Chrome versions as well).\n    jQuery.each({\n        mouseenter: \"mouseover\",\n        mouseleave: \"mouseout\",\n        pointerenter: \"pointerover\",\n        pointerleave: \"pointerout\"\n    }, function(orig, fix) {\n        jQuery.event.special[orig] = {\n            delegateType: fix,\n            bindType: fix,\n            handle: function(event) {\n                var ret, target = this, related = event.relatedTarget, handleObj = event.handleObj;\n                // For mouseenter/leave call the handler if related is outside the target.\n                // NB: No relatedTarget if the mouse left/entered the browser window\n                if (!related || related !== target && !jQuery.contains(target, related)) {\n                    event.type = handleObj.origType;\n                    ret = handleObj.handler.apply(this, arguments);\n                    event.type = fix;\n                }\n                return ret;\n            }\n        };\n    });\n    jQuery.fn.extend({\n        on: function(types, selector, data, fn) {\n            return on(this, types, selector, data, fn);\n        },\n        one: function(types, selector, data, fn) {\n            return on(this, types, selector, data, fn, 1);\n        },\n        off: function(types, selector, fn) {\n            var handleObj, type;\n            if (types && types.preventDefault && types.handleObj) {\n                // ( event )  dispatched jQuery.Event\n                handleObj = types.handleObj;\n                jQuery(types.delegateTarget).off(handleObj.namespace ? handleObj.origType + \".\" + handleObj.namespace : handleObj.origType, handleObj.selector, handleObj.handler);\n                return this;\n            }\n            if (typeof types === \"object\") {\n                // ( types-object [, selector] )\n                for(type in types)this.off(type, selector, types[type]);\n                return this;\n            }\n            if (selector === false || typeof selector === \"function\") {\n                // ( types [, fn] )\n                fn = selector;\n                selector = undefined;\n            }\n            if (fn === false) fn = returnFalse;\n            return this.each(function() {\n                jQuery.event.remove(this, types, fn, selector);\n            });\n        }\n    });\n    var // Support: IE <=10 - 11, Edge 12 - 13 only\n    // In IE/Edge using regex groups here causes severe slowdowns.\n    // See https://connect.microsoft.com/IE/feedback/details/1736512/\n    rnoInnerhtml = /<script|<style|<link/i, // checked=\"checked\" or checked\n    rchecked = /checked\\s*(?:[^=]|=\\s*.checked.)/i, rcleanScript = /^\\s*<!\\[CDATA\\[|\\]\\]>\\s*$/g;\n    // Prefer a tbody over its parent table for containing new rows\n    function manipulationTarget(elem, content) {\n        if (nodeName(elem, \"table\") && nodeName(content.nodeType !== 11 ? content : content.firstChild, \"tr\")) return jQuery(elem).children(\"tbody\")[0] || elem;\n        return elem;\n    }\n    // Replace/restore the type attribute of script elements for safe DOM manipulation\n    function disableScript(elem) {\n        elem.type = (elem.getAttribute(\"type\") !== null) + \"/\" + elem.type;\n        return elem;\n    }\n    function restoreScript(elem) {\n        if ((elem.type || \"\").slice(0, 5) === \"true/\") elem.type = elem.type.slice(5);\n        else elem.removeAttribute(\"type\");\n        return elem;\n    }\n    function cloneCopyEvent(src, dest) {\n        var i, l, type, pdataOld, udataOld, udataCur, events;\n        if (dest.nodeType !== 1) return;\n        // 1. Copy private data: events, handlers, etc.\n        if (dataPriv.hasData(src)) {\n            pdataOld = dataPriv.get(src);\n            events = pdataOld.events;\n            if (events) {\n                dataPriv.remove(dest, \"handle events\");\n                for(type in events)for(i = 0, l = events[type].length; i < l; i++)jQuery.event.add(dest, type, events[type][i]);\n            }\n        }\n        // 2. Copy user data\n        if (dataUser.hasData(src)) {\n            udataOld = dataUser.access(src);\n            udataCur = jQuery.extend({}, udataOld);\n            dataUser.set(dest, udataCur);\n        }\n    }\n    // Fix IE bugs, see support tests\n    function fixInput(src, dest) {\n        var nodeName = dest.nodeName.toLowerCase();\n        // Fails to persist the checked state of a cloned checkbox or radio button.\n        if (nodeName === \"input\" && rcheckableType.test(src.type)) dest.checked = src.checked;\n        else if (nodeName === \"input\" || nodeName === \"textarea\") dest.defaultValue = src.defaultValue;\n    }\n    function domManip(collection, args, callback, ignored) {\n        // Flatten any nested arrays\n        args = flat(args);\n        var fragment, first, scripts, hasScripts, node, doc, i = 0, l = collection.length, iNoClone = l - 1, value = args[0], valueIsFunction = isFunction(value);\n        // We can't cloneNode fragments that contain checked, in WebKit\n        if (valueIsFunction || l > 1 && typeof value === \"string\" && !support.checkClone && rchecked.test(value)) return collection.each(function(index) {\n            var self = collection.eq(index);\n            if (valueIsFunction) args[0] = value.call(this, index, self.html());\n            domManip(self, args, callback, ignored);\n        });\n        if (l) {\n            fragment = buildFragment(args, collection[0].ownerDocument, false, collection, ignored);\n            first = fragment.firstChild;\n            if (fragment.childNodes.length === 1) fragment = first;\n            // Require either new content or an interest in ignored elements to invoke the callback\n            if (first || ignored) {\n                scripts = jQuery.map(getAll(fragment, \"script\"), disableScript);\n                hasScripts = scripts.length;\n                // Use the original fragment for the last item\n                // instead of the first because it can end up\n                // being emptied incorrectly in certain situations (trac-8070).\n                for(; i < l; i++){\n                    node = fragment;\n                    if (i !== iNoClone) {\n                        node = jQuery.clone(node, true, true);\n                        // Keep references to cloned scripts for later restoration\n                        if (hasScripts) // Support: Android <=4.0 only, PhantomJS 1 only\n                        // push.apply(_, arraylike) throws on ancient WebKit\n                        jQuery.merge(scripts, getAll(node, \"script\"));\n                    }\n                    callback.call(collection[i], node, i);\n                }\n                if (hasScripts) {\n                    doc = scripts[scripts.length - 1].ownerDocument;\n                    // Re-enable scripts\n                    jQuery.map(scripts, restoreScript);\n                    // Evaluate executable scripts on first document insertion\n                    for(i = 0; i < hasScripts; i++){\n                        node = scripts[i];\n                        if (rscriptType.test(node.type || \"\") && !dataPriv.access(node, \"globalEval\") && jQuery.contains(doc, node)) {\n                            if (node.src && (node.type || \"\").toLowerCase() !== \"module\") // Optional AJAX dependency, but won't run scripts if not present\n                            {\n                                if (jQuery._evalUrl && !node.noModule) jQuery._evalUrl(node.src, {\n                                    nonce: node.nonce || node.getAttribute(\"nonce\")\n                                }, doc);\n                            } else // Unwrap a CDATA section containing script contents. This shouldn't be\n                            // needed as in XML documents they're already not visible when\n                            // inspecting element contents and in HTML documents they have no\n                            // meaning but we're preserving that logic for backwards compatibility.\n                            // This will be removed completely in 4.0. See gh-4904.\n                            DOMEval(node.textContent.replace(rcleanScript, \"\"), node, doc);\n                        }\n                    }\n                }\n            }\n        }\n        return collection;\n    }\n    function remove(elem, selector, keepData) {\n        var node, nodes = selector ? jQuery.filter(selector, elem) : elem, i = 0;\n        for(; (node = nodes[i]) != null; i++){\n            if (!keepData && node.nodeType === 1) jQuery.cleanData(getAll(node));\n            if (node.parentNode) {\n                if (keepData && isAttached(node)) setGlobalEval(getAll(node, \"script\"));\n                node.parentNode.removeChild(node);\n            }\n        }\n        return elem;\n    }\n    jQuery.extend({\n        htmlPrefilter: function(html) {\n            return html;\n        },\n        clone: function(elem, dataAndEvents, deepDataAndEvents) {\n            var i, l, srcElements, destElements, clone = elem.cloneNode(true), inPage = isAttached(elem);\n            // Fix IE cloning issues\n            if (!support.noCloneChecked && (elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem)) {\n                // We eschew jQuery#find here for performance reasons:\n                // https://jsperf.com/getall-vs-sizzle/2\n                destElements = getAll(clone);\n                srcElements = getAll(elem);\n                for(i = 0, l = srcElements.length; i < l; i++)fixInput(srcElements[i], destElements[i]);\n            }\n            // Copy the events from the original to the clone\n            if (dataAndEvents) {\n                if (deepDataAndEvents) {\n                    srcElements = srcElements || getAll(elem);\n                    destElements = destElements || getAll(clone);\n                    for(i = 0, l = srcElements.length; i < l; i++)cloneCopyEvent(srcElements[i], destElements[i]);\n                } else cloneCopyEvent(elem, clone);\n            }\n            // Preserve script evaluation history\n            destElements = getAll(clone, \"script\");\n            if (destElements.length > 0) setGlobalEval(destElements, !inPage && getAll(elem, \"script\"));\n            // Return the cloned set\n            return clone;\n        },\n        cleanData: function(elems) {\n            var data, elem, type, special = jQuery.event.special, i = 0;\n            for(; (elem = elems[i]) !== undefined; i++)if (acceptData(elem)) {\n                if (data = elem[dataPriv.expando]) {\n                    if (data.events) {\n                        for(type in data.events)if (special[type]) jQuery.event.remove(elem, type);\n                        else jQuery.removeEvent(elem, type, data.handle);\n                    }\n                    // Support: Chrome <=35 - 45+\n                    // Assign undefined instead of using delete, see Data#remove\n                    elem[dataPriv.expando] = undefined;\n                }\n                if (elem[dataUser.expando]) // Support: Chrome <=35 - 45+\n                // Assign undefined instead of using delete, see Data#remove\n                elem[dataUser.expando] = undefined;\n            }\n        }\n    });\n    jQuery.fn.extend({\n        detach: function(selector) {\n            return remove(this, selector, true);\n        },\n        remove: function(selector) {\n            return remove(this, selector);\n        },\n        text: function(value) {\n            return access(this, function(value) {\n                return value === undefined ? jQuery.text(this) : this.empty().each(function() {\n                    if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) this.textContent = value;\n                });\n            }, null, value, arguments.length);\n        },\n        append: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                    var target = manipulationTarget(this, elem);\n                    target.appendChild(elem);\n                }\n            });\n        },\n        prepend: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                    var target = manipulationTarget(this, elem);\n                    target.insertBefore(elem, target.firstChild);\n                }\n            });\n        },\n        before: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.parentNode) this.parentNode.insertBefore(elem, this);\n            });\n        },\n        after: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.parentNode) this.parentNode.insertBefore(elem, this.nextSibling);\n            });\n        },\n        empty: function() {\n            var elem, i = 0;\n            for(; (elem = this[i]) != null; i++)if (elem.nodeType === 1) {\n                // Prevent memory leaks\n                jQuery.cleanData(getAll(elem, false));\n                // Remove any remaining nodes\n                elem.textContent = \"\";\n            }\n            return this;\n        },\n        clone: function(dataAndEvents, deepDataAndEvents) {\n            dataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n            deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n            return this.map(function() {\n                return jQuery.clone(this, dataAndEvents, deepDataAndEvents);\n            });\n        },\n        html: function(value) {\n            return access(this, function(value) {\n                var elem = this[0] || {}, i = 0, l = this.length;\n                if (value === undefined && elem.nodeType === 1) return elem.innerHTML;\n                // See if we can take a shortcut and just use innerHTML\n                if (typeof value === \"string\" && !rnoInnerhtml.test(value) && !wrapMap[(rtagName.exec(value) || [\n                    \"\",\n                    \"\"\n                ])[1].toLowerCase()]) {\n                    value = jQuery.htmlPrefilter(value);\n                    try {\n                        for(; i < l; i++){\n                            elem = this[i] || {};\n                            // Remove element nodes and prevent memory leaks\n                            if (elem.nodeType === 1) {\n                                jQuery.cleanData(getAll(elem, false));\n                                elem.innerHTML = value;\n                            }\n                        }\n                        elem = 0;\n                    // If using innerHTML throws an exception, use the fallback method\n                    } catch (e) {}\n                }\n                if (elem) this.empty().append(value);\n            }, null, value, arguments.length);\n        },\n        replaceWith: function() {\n            var ignored = [];\n            // Make the changes, replacing each non-ignored context element with the new content\n            return domManip(this, arguments, function(elem) {\n                var parent = this.parentNode;\n                if (jQuery.inArray(this, ignored) < 0) {\n                    jQuery.cleanData(getAll(this));\n                    if (parent) parent.replaceChild(elem, this);\n                }\n            // Force callback invocation\n            }, ignored);\n        }\n    });\n    jQuery.each({\n        appendTo: \"append\",\n        prependTo: \"prepend\",\n        insertBefore: \"before\",\n        insertAfter: \"after\",\n        replaceAll: \"replaceWith\"\n    }, function(name, original) {\n        jQuery.fn[name] = function(selector) {\n            var elems, ret = [], insert = jQuery(selector), last = insert.length - 1, i = 0;\n            for(; i <= last; i++){\n                elems = i === last ? this : this.clone(true);\n                jQuery(insert[i])[original](elems);\n                // Support: Android <=4.0 only, PhantomJS 1 only\n                // .get() because push.apply(_, arraylike) throws on ancient WebKit\n                push.apply(ret, elems.get());\n            }\n            return this.pushStack(ret);\n        };\n    });\n    var rnumnonpx = new RegExp(\"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\");\n    var rcustomProp = /^--/;\n    var getStyles = function(elem) {\n        // Support: IE <=11 only, Firefox <=30 (trac-15098, trac-14150)\n        // IE throws on elements created in popups\n        // FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n        var view = elem.ownerDocument.defaultView;\n        if (!view || !view.opener) view = window1;\n        return view.getComputedStyle(elem);\n    };\n    var swap = function(elem, options, callback) {\n        var ret, name, old = {};\n        // Remember the old values, and insert the new ones\n        for(name in options){\n            old[name] = elem.style[name];\n            elem.style[name] = options[name];\n        }\n        ret = callback.call(elem);\n        // Revert the old values\n        for(name in options)elem.style[name] = old[name];\n        return ret;\n    };\n    var rboxStyle = new RegExp(cssExpand.join(\"|\"), \"i\");\n    (function() {\n        // Executing both pixelPosition & boxSizingReliable tests require only one layout\n        // so they're executed at the same time to save the second computation.\n        function computeStyleTests() {\n            // This is a singleton, we need to execute it only once\n            if (!div) return;\n            container.style.cssText = \"position:absolute;left:-11111px;width:60px;margin-top:1px;padding:0;border:0\";\n            div.style.cssText = \"position:relative;display:block;box-sizing:border-box;overflow:scroll;margin:auto;border:1px;padding:1px;width:60%;top:1%\";\n            documentElement.appendChild(container).appendChild(div);\n            var divStyle = window1.getComputedStyle(div);\n            pixelPositionVal = divStyle.top !== \"1%\";\n            // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n            reliableMarginLeftVal = roundPixelMeasures(divStyle.marginLeft) === 12;\n            // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n            // Some styles come back with percentage values, even though they shouldn't\n            div.style.right = \"60%\";\n            pixelBoxStylesVal = roundPixelMeasures(divStyle.right) === 36;\n            // Support: IE 9 - 11 only\n            // Detect misreporting of content dimensions for box-sizing:border-box elements\n            boxSizingReliableVal = roundPixelMeasures(divStyle.width) === 36;\n            // Support: IE 9 only\n            // Detect overflow:scroll screwiness (gh-3699)\n            // Support: Chrome <=64\n            // Don't get tricked when zoom affects offsetWidth (gh-4029)\n            div.style.position = \"absolute\";\n            scrollboxSizeVal = roundPixelMeasures(div.offsetWidth / 3) === 12;\n            documentElement.removeChild(container);\n            // Nullify the div so it wouldn't be stored in the memory and\n            // it will also be a sign that checks already performed\n            div = null;\n        }\n        function roundPixelMeasures(measure) {\n            return Math.round(parseFloat(measure));\n        }\n        var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, reliableTrDimensionsVal, reliableMarginLeftVal, container = document.createElement(\"div\"), div = document.createElement(\"div\");\n        // Finish early in limited (non-browser) environments\n        if (!div.style) return;\n        // Support: IE <=9 - 11 only\n        // Style of cloned element affects source element cloned (trac-8908)\n        div.style.backgroundClip = \"content-box\";\n        div.cloneNode(true).style.backgroundClip = \"\";\n        support.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n        jQuery.extend(support, {\n            boxSizingReliable: function() {\n                computeStyleTests();\n                return boxSizingReliableVal;\n            },\n            pixelBoxStyles: function() {\n                computeStyleTests();\n                return pixelBoxStylesVal;\n            },\n            pixelPosition: function() {\n                computeStyleTests();\n                return pixelPositionVal;\n            },\n            reliableMarginLeft: function() {\n                computeStyleTests();\n                return reliableMarginLeftVal;\n            },\n            scrollboxSize: function() {\n                computeStyleTests();\n                return scrollboxSizeVal;\n            },\n            // Support: IE 9 - 11+, Edge 15 - 18+\n            // IE/Edge misreport `getComputedStyle` of table rows with width/height\n            // set in CSS while `offset*` properties report correct values.\n            // Behavior in IE 9 is more subtle than in newer versions & it passes\n            // some versions of this test; make sure not to make it pass there!\n            //\n            // Support: Firefox 70+\n            // Only Firefox includes border widths\n            // in computed dimensions. (gh-4529)\n            reliableTrDimensions: function() {\n                var table, tr, trChild, trStyle;\n                if (reliableTrDimensionsVal == null) {\n                    table = document.createElement(\"table\");\n                    tr = document.createElement(\"tr\");\n                    trChild = document.createElement(\"div\");\n                    table.style.cssText = \"position:absolute;left:-11111px;border-collapse:separate\";\n                    tr.style.cssText = \"box-sizing:content-box;border:1px solid\";\n                    // Support: Chrome 86+\n                    // Height set through cssText does not get applied.\n                    // Computed height then comes back as 0.\n                    tr.style.height = \"1px\";\n                    trChild.style.height = \"9px\";\n                    // Support: Android 8 Chrome 86+\n                    // In our bodyBackground.html iframe,\n                    // display for all div elements is set to \"inline\",\n                    // which causes a problem only in Android 8 Chrome 86.\n                    // Ensuring the div is `display: block`\n                    // gets around this issue.\n                    trChild.style.display = \"block\";\n                    documentElement.appendChild(table).appendChild(tr).appendChild(trChild);\n                    trStyle = window1.getComputedStyle(tr);\n                    reliableTrDimensionsVal = parseInt(trStyle.height, 10) + parseInt(trStyle.borderTopWidth, 10) + parseInt(trStyle.borderBottomWidth, 10) === tr.offsetHeight;\n                    documentElement.removeChild(table);\n                }\n                return reliableTrDimensionsVal;\n            }\n        });\n    })();\n    function curCSS(elem, name, computed) {\n        var width, minWidth, maxWidth, ret, isCustomProp = rcustomProp.test(name), // Support: Firefox 51+\n        // Retrieving style before computed somehow\n        // fixes an issue with getting wrong values\n        // on detached elements\n        style = elem.style;\n        computed = computed || getStyles(elem);\n        // getPropertyValue is needed for:\n        //   .css('filter') (IE 9 only, trac-12537)\n        //   .css('--customProperty) (gh-3144)\n        if (computed) {\n            // Support: IE <=9 - 11+\n            // IE only supports `\"float\"` in `getPropertyValue`; in computed styles\n            // it's only available as `\"cssFloat\"`. We no longer modify properties\n            // sent to `.css()` apart from camelCasing, so we need to check both.\n            // Normally, this would create difference in behavior: if\n            // `getPropertyValue` returns an empty string, the value returned\n            // by `.css()` would be `undefined`. This is usually the case for\n            // disconnected elements. However, in IE even disconnected elements\n            // with no styles return `\"none\"` for `getPropertyValue( \"float\" )`\n            ret = computed.getPropertyValue(name) || computed[name];\n            if (isCustomProp && ret) // Support: Firefox 105+, Chrome <=105+\n            // Spec requires trimming whitespace for custom properties (gh-4926).\n            // Firefox only trims leading whitespace. Chrome just collapses\n            // both leading & trailing whitespace to a single space.\n            //\n            // Fall back to `undefined` if empty string returned.\n            // This collapses a missing definition with property defined\n            // and set to an empty string but there's no standard API\n            // allowing us to differentiate them without a performance penalty\n            // and returning `undefined` aligns with older jQuery.\n            //\n            // rtrimCSS treats U+000D CARRIAGE RETURN and U+000C FORM FEED\n            // as whitespace while CSS does not, but this is not a problem\n            // because CSS preprocessing replaces them with U+000A LINE FEED\n            // (which *is* CSS whitespace)\n            // https://www.w3.org/TR/css-syntax-3/#input-preprocessing\n            ret = ret.replace(rtrimCSS, \"$1\") || undefined;\n            if (ret === \"\" && !isAttached(elem)) ret = jQuery.style(elem, name);\n            // A tribute to the \"awesome hack by Dean Edwards\"\n            // Android Browser returns percentage for some values,\n            // but width seems to be reliably pixels.\n            // This is against the CSSOM draft spec:\n            // https://drafts.csswg.org/cssom/#resolved-values\n            if (!support.pixelBoxStyles() && rnumnonpx.test(ret) && rboxStyle.test(name)) {\n                // Remember the original values\n                width = style.width;\n                minWidth = style.minWidth;\n                maxWidth = style.maxWidth;\n                // Put in the new values to get a computed value out\n                style.minWidth = style.maxWidth = style.width = ret;\n                ret = computed.width;\n                // Revert the changed values\n                style.width = width;\n                style.minWidth = minWidth;\n                style.maxWidth = maxWidth;\n            }\n        }\n        return ret !== undefined ? // Support: IE <=9 - 11 only\n        // IE returns zIndex value as an integer.\n        ret + \"\" : ret;\n    }\n    function addGetHookIf(conditionFn, hookFn) {\n        // Define the hook, we'll check on the first run if it's really needed.\n        return {\n            get: function() {\n                if (conditionFn()) {\n                    // Hook not needed (or it's not possible to use it due\n                    // to missing dependency), remove it.\n                    delete this.get;\n                    return;\n                }\n                // Hook needed; redefine it so that the support test is not executed again.\n                return (this.get = hookFn).apply(this, arguments);\n            }\n        };\n    }\n    var cssPrefixes = [\n        \"Webkit\",\n        \"Moz\",\n        \"ms\"\n    ], emptyStyle = document.createElement(\"div\").style, vendorProps = {};\n    // Return a vendor-prefixed property or undefined\n    function vendorPropName(name) {\n        // Check for vendor prefixed names\n        var capName = name[0].toUpperCase() + name.slice(1), i = cssPrefixes.length;\n        while(i--){\n            name = cssPrefixes[i] + capName;\n            if (name in emptyStyle) return name;\n        }\n    }\n    // Return a potentially-mapped jQuery.cssProps or vendor prefixed property\n    function finalPropName(name) {\n        var final = jQuery.cssProps[name] || vendorProps[name];\n        if (final) return final;\n        if (name in emptyStyle) return name;\n        return vendorProps[name] = vendorPropName(name) || name;\n    }\n    var // Swappable if display is none or starts with table\n    // except \"table\", \"table-cell\", or \"table-caption\"\n    // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n    rdisplayswap = /^(none|table(?!-c[ea]).+)/, cssShow = {\n        position: \"absolute\",\n        visibility: \"hidden\",\n        display: \"block\"\n    }, cssNormalTransform = {\n        letterSpacing: \"0\",\n        fontWeight: \"400\"\n    };\n    function setPositiveNumber(_elem, value, subtract) {\n        // Any relative (+/-) values have already been\n        // normalized at this point\n        var matches = rcssNum.exec(value);\n        return matches ? // Guard against undefined \"subtract\", e.g., when used as in cssHooks\n        Math.max(0, matches[2] - (subtract || 0)) + (matches[3] || \"px\") : value;\n    }\n    function boxModelAdjustment(elem, dimension, box, isBorderBox, styles, computedVal) {\n        var i = dimension === \"width\" ? 1 : 0, extra = 0, delta = 0, marginDelta = 0;\n        // Adjustment may not be necessary\n        if (box === (isBorderBox ? \"border\" : \"content\")) return 0;\n        for(; i < 4; i += 2){\n            // Both box models exclude margin\n            // Count margin delta separately to only add it after scroll gutter adjustment.\n            // This is needed to make negative margins work with `outerHeight( true )` (gh-3982).\n            if (box === \"margin\") marginDelta += jQuery.css(elem, box + cssExpand[i], true, styles);\n            // If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n            if (!isBorderBox) {\n                // Add padding\n                delta += jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n                // For \"border\" or \"margin\", add border\n                if (box !== \"padding\") delta += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n                else extra += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            // If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n            // \"padding\" or \"margin\"\n            } else {\n                // For \"content\", subtract padding\n                if (box === \"content\") delta -= jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n                // For \"content\" or \"padding\", subtract border\n                if (box !== \"margin\") delta -= jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            }\n        }\n        // Account for positive content-box scroll gutter when requested by providing computedVal\n        if (!isBorderBox && computedVal >= 0) // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n        // Assuming integer scroll gutter, subtract the rest and round down\n        delta += Math.max(0, Math.ceil(elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] - computedVal - delta - extra - 0.5)) || 0;\n        return delta + marginDelta;\n    }\n    function getWidthOrHeight(elem, dimension, extra) {\n        // Start with computed style\n        var styles = getStyles(elem), // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).\n        // Fake content-box until we know it's needed to know the true value.\n        boxSizingNeeded = !support.boxSizingReliable() || extra, isBorderBox = boxSizingNeeded && jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\", valueIsBorderBox = isBorderBox, val = curCSS(elem, dimension, styles), offsetProp = \"offset\" + dimension[0].toUpperCase() + dimension.slice(1);\n        // Support: Firefox <=54\n        // Return a confounding non-pixel value or feign ignorance, as appropriate.\n        if (rnumnonpx.test(val)) {\n            if (!extra) return val;\n            val = \"auto\";\n        }\n        // Support: IE 9 - 11 only\n        // Use offsetWidth/offsetHeight for when box sizing is unreliable.\n        // In those cases, the computed value can be trusted to be border-box.\n        if ((!support.boxSizingReliable() && isBorderBox || // Support: IE 10 - 11+, Edge 15 - 18+\n        // IE/Edge misreport `getComputedStyle` of table rows with width/height\n        // set in CSS while `offset*` properties report correct values.\n        // Interestingly, in some cases IE 9 doesn't suffer from this issue.\n        !support.reliableTrDimensions() && nodeName(elem, \"tr\") || // Fall back to offsetWidth/offsetHeight when value is \"auto\"\n        // This happens for inline elements with no explicit setting (gh-3571)\n        val === \"auto\" || // Support: Android <=4.1 - 4.3 only\n        // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n        !parseFloat(val) && jQuery.css(elem, \"display\", false, styles) === \"inline\") && // Make sure the element is visible & connected\n        elem.getClientRects().length) {\n            isBorderBox = jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\";\n            // Where available, offsetWidth/offsetHeight approximate border box dimensions.\n            // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the\n            // retrieved value as a content box dimension.\n            valueIsBorderBox = offsetProp in elem;\n            if (valueIsBorderBox) val = elem[offsetProp];\n        }\n        // Normalize \"\" and auto\n        val = parseFloat(val) || 0;\n        // Adjust for the element's box model\n        return val + boxModelAdjustment(elem, dimension, extra || (isBorderBox ? \"border\" : \"content\"), valueIsBorderBox, styles, // Provide the current computed size to request scroll gutter calculation (gh-3589)\n        val) + \"px\";\n    }\n    jQuery.extend({\n        // Add in style property hooks for overriding the default\n        // behavior of getting and setting a style property\n        cssHooks: {\n            opacity: {\n                get: function(elem, computed) {\n                    if (computed) {\n                        // We should always get a number back from opacity\n                        var ret = curCSS(elem, \"opacity\");\n                        return ret === \"\" ? \"1\" : ret;\n                    }\n                }\n            }\n        },\n        // Don't automatically add \"px\" to these possibly-unitless properties\n        cssNumber: {\n            animationIterationCount: true,\n            aspectRatio: true,\n            borderImageSlice: true,\n            columnCount: true,\n            flexGrow: true,\n            flexShrink: true,\n            fontWeight: true,\n            gridArea: true,\n            gridColumn: true,\n            gridColumnEnd: true,\n            gridColumnStart: true,\n            gridRow: true,\n            gridRowEnd: true,\n            gridRowStart: true,\n            lineHeight: true,\n            opacity: true,\n            order: true,\n            orphans: true,\n            scale: true,\n            widows: true,\n            zIndex: true,\n            zoom: true,\n            // SVG-related\n            fillOpacity: true,\n            floodOpacity: true,\n            stopOpacity: true,\n            strokeMiterlimit: true,\n            strokeOpacity: true\n        },\n        // Add in properties whose names you wish to fix before\n        // setting or getting the value\n        cssProps: {},\n        // Get and set the style property on a DOM Node\n        style: function(elem, name, value, extra) {\n            // Don't set styles on text and comment nodes\n            if (!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style) return;\n            // Make sure that we're working with the right name\n            var ret, type, hooks, origName = camelCase(name), isCustomProp = rcustomProp.test(name), style = elem.style;\n            // Make sure that we're working with the right name. We don't\n            // want to query the value if it is a CSS custom property\n            // since they are user-defined.\n            if (!isCustomProp) name = finalPropName(origName);\n            // Gets hook for the prefixed version, then unprefixed version\n            hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n            // Check if we're setting a value\n            if (value !== undefined) {\n                type = typeof value;\n                // Convert \"+=\" or \"-=\" to relative numbers (trac-7345)\n                if (type === \"string\" && (ret = rcssNum.exec(value)) && ret[1]) {\n                    value = adjustCSS(elem, name, ret);\n                    // Fixes bug trac-9237\n                    type = \"number\";\n                }\n                // Make sure that null and NaN values aren't set (trac-7116)\n                if (value == null || value !== value) return;\n                // If a number was passed in, add the unit (except for certain CSS properties)\n                // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append\n                // \"px\" to a few hardcoded values.\n                if (type === \"number\" && !isCustomProp) value += ret && ret[3] || (jQuery.cssNumber[origName] ? \"\" : \"px\");\n                // background-* props affect original clone's values\n                if (!support.clearCloneStyle && value === \"\" && name.indexOf(\"background\") === 0) style[name] = \"inherit\";\n                // If a hook was provided, use that value, otherwise just set the specified value\n                if (!hooks || !(\"set\" in hooks) || (value = hooks.set(elem, value, extra)) !== undefined) {\n                    if (isCustomProp) style.setProperty(name, value);\n                    else style[name] = value;\n                }\n            } else {\n                // If a hook was provided get the non-computed value from there\n                if (hooks && \"get\" in hooks && (ret = hooks.get(elem, false, extra)) !== undefined) return ret;\n                // Otherwise just get the value from the style object\n                return style[name];\n            }\n        },\n        css: function(elem, name, extra, styles) {\n            var val, num, hooks, origName = camelCase(name), isCustomProp = rcustomProp.test(name);\n            // Make sure that we're working with the right name. We don't\n            // want to modify the value if it is a CSS custom property\n            // since they are user-defined.\n            if (!isCustomProp) name = finalPropName(origName);\n            // Try prefixed name followed by the unprefixed name\n            hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n            // If a hook was provided get the computed value from there\n            if (hooks && \"get\" in hooks) val = hooks.get(elem, true, extra);\n            // Otherwise, if a way to get the computed value exists, use that\n            if (val === undefined) val = curCSS(elem, name, styles);\n            // Convert \"normal\" to computed value\n            if (val === \"normal\" && name in cssNormalTransform) val = cssNormalTransform[name];\n            // Make numeric if forced or a qualifier was provided and val looks numeric\n            if (extra === \"\" || extra) {\n                num = parseFloat(val);\n                return extra === true || isFinite(num) ? num || 0 : val;\n            }\n            return val;\n        }\n    });\n    jQuery.each([\n        \"height\",\n        \"width\"\n    ], function(_i, dimension) {\n        jQuery.cssHooks[dimension] = {\n            get: function(elem, computed, extra) {\n                if (computed) // Certain elements can have dimension info if we invisibly show them\n                // but it must have a current display style that would benefit\n                return rdisplayswap.test(jQuery.css(elem, \"display\")) && // Support: Safari 8+\n                // Table columns in Safari have non-zero offsetWidth & zero\n                // getBoundingClientRect().width unless display is changed.\n                // Support: IE <=11 only\n                // Running getBoundingClientRect on a disconnected node\n                // in IE throws an error.\n                (!elem.getClientRects().length || !elem.getBoundingClientRect().width) ? swap(elem, cssShow, function() {\n                    return getWidthOrHeight(elem, dimension, extra);\n                }) : getWidthOrHeight(elem, dimension, extra);\n            },\n            set: function(elem, value, extra) {\n                var matches, styles = getStyles(elem), // Only read styles.position if the test has a chance to fail\n                // to avoid forcing a reflow.\n                scrollboxSizeBuggy = !support.scrollboxSize() && styles.position === \"absolute\", // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)\n                boxSizingNeeded = scrollboxSizeBuggy || extra, isBorderBox = boxSizingNeeded && jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\", subtract = extra ? boxModelAdjustment(elem, dimension, extra, isBorderBox, styles) : 0;\n                // Account for unreliable border-box dimensions by comparing offset* to computed and\n                // faking a content-box to get border and padding (gh-3699)\n                if (isBorderBox && scrollboxSizeBuggy) subtract -= Math.ceil(elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] - parseFloat(styles[dimension]) - boxModelAdjustment(elem, dimension, \"border\", false, styles) - 0.5);\n                // Convert to pixels if value adjustment is needed\n                if (subtract && (matches = rcssNum.exec(value)) && (matches[3] || \"px\") !== \"px\") {\n                    elem.style[dimension] = value;\n                    value = jQuery.css(elem, dimension);\n                }\n                return setPositiveNumber(elem, value, subtract);\n            }\n        };\n    });\n    jQuery.cssHooks.marginLeft = addGetHookIf(support.reliableMarginLeft, function(elem, computed) {\n        if (computed) return (parseFloat(curCSS(elem, \"marginLeft\")) || elem.getBoundingClientRect().left - swap(elem, {\n            marginLeft: 0\n        }, function() {\n            return elem.getBoundingClientRect().left;\n        })) + \"px\";\n    });\n    // These hooks are used by animate to expand properties\n    jQuery.each({\n        margin: \"\",\n        padding: \"\",\n        border: \"Width\"\n    }, function(prefix, suffix) {\n        jQuery.cssHooks[prefix + suffix] = {\n            expand: function(value) {\n                var i = 0, expanded = {}, // Assumes a single number if not a string\n                parts = typeof value === \"string\" ? value.split(\" \") : [\n                    value\n                ];\n                for(; i < 4; i++)expanded[prefix + cssExpand[i] + suffix] = parts[i] || parts[i - 2] || parts[0];\n                return expanded;\n            }\n        };\n        if (prefix !== \"margin\") jQuery.cssHooks[prefix + suffix].set = setPositiveNumber;\n    });\n    jQuery.fn.extend({\n        css: function(name, value) {\n            return access(this, function(elem, name, value) {\n                var styles, len, map = {}, i = 0;\n                if (Array.isArray(name)) {\n                    styles = getStyles(elem);\n                    len = name.length;\n                    for(; i < len; i++)map[name[i]] = jQuery.css(elem, name[i], false, styles);\n                    return map;\n                }\n                return value !== undefined ? jQuery.style(elem, name, value) : jQuery.css(elem, name);\n            }, name, value, arguments.length > 1);\n        }\n    });\n    function Tween(elem, options, prop, end, easing) {\n        return new Tween.prototype.init(elem, options, prop, end, easing);\n    }\n    jQuery.Tween = Tween;\n    Tween.prototype = {\n        constructor: Tween,\n        init: function(elem, options, prop, end, easing, unit) {\n            this.elem = elem;\n            this.prop = prop;\n            this.easing = easing || jQuery.easing._default;\n            this.options = options;\n            this.start = this.now = this.cur();\n            this.end = end;\n            this.unit = unit || (jQuery.cssNumber[prop] ? \"\" : \"px\");\n        },\n        cur: function() {\n            var hooks = Tween.propHooks[this.prop];\n            return hooks && hooks.get ? hooks.get(this) : Tween.propHooks._default.get(this);\n        },\n        run: function(percent) {\n            var eased, hooks = Tween.propHooks[this.prop];\n            if (this.options.duration) this.pos = eased = jQuery.easing[this.easing](percent, this.options.duration * percent, 0, 1, this.options.duration);\n            else this.pos = eased = percent;\n            this.now = (this.end - this.start) * eased + this.start;\n            if (this.options.step) this.options.step.call(this.elem, this.now, this);\n            if (hooks && hooks.set) hooks.set(this);\n            else Tween.propHooks._default.set(this);\n            return this;\n        }\n    };\n    Tween.prototype.init.prototype = Tween.prototype;\n    Tween.propHooks = {\n        _default: {\n            get: function(tween) {\n                var result;\n                // Use a property on the element directly when it is not a DOM element,\n                // or when there is no matching style property that exists.\n                if (tween.elem.nodeType !== 1 || tween.elem[tween.prop] != null && tween.elem.style[tween.prop] == null) return tween.elem[tween.prop];\n                // Passing an empty string as a 3rd parameter to .css will automatically\n                // attempt a parseFloat and fallback to a string if the parse fails.\n                // Simple values such as \"10px\" are parsed to Float;\n                // complex values such as \"rotate(1rad)\" are returned as-is.\n                result = jQuery.css(tween.elem, tween.prop, \"\");\n                // Empty strings, null, undefined and \"auto\" are converted to 0.\n                return !result || result === \"auto\" ? 0 : result;\n            },\n            set: function(tween) {\n                // Use step hook for back compat.\n                // Use cssHook if its there.\n                // Use .style if available and use plain properties where available.\n                if (jQuery.fx.step[tween.prop]) jQuery.fx.step[tween.prop](tween);\n                else if (tween.elem.nodeType === 1 && (jQuery.cssHooks[tween.prop] || tween.elem.style[finalPropName(tween.prop)] != null)) jQuery.style(tween.elem, tween.prop, tween.now + tween.unit);\n                else tween.elem[tween.prop] = tween.now;\n            }\n        }\n    };\n    // Support: IE <=9 only\n    // Panic based approach to setting things on disconnected nodes\n    Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {\n        set: function(tween) {\n            if (tween.elem.nodeType && tween.elem.parentNode) tween.elem[tween.prop] = tween.now;\n        }\n    };\n    jQuery.easing = {\n        linear: function(p) {\n            return p;\n        },\n        swing: function(p) {\n            return 0.5 - Math.cos(p * Math.PI) / 2;\n        },\n        _default: \"swing\"\n    };\n    jQuery.fx = Tween.prototype.init;\n    // Back compat <1.8 extension point\n    jQuery.fx.step = {};\n    var fxNow, inProgress, rfxtypes = /^(?:toggle|show|hide)$/, rrun = /queueHooks$/;\n    function schedule() {\n        if (inProgress) {\n            if (document.hidden === false && window1.requestAnimationFrame) window1.requestAnimationFrame(schedule);\n            else window1.setTimeout(schedule, jQuery.fx.interval);\n            jQuery.fx.tick();\n        }\n    }\n    // Animations created synchronously will run synchronously\n    function createFxNow() {\n        window1.setTimeout(function() {\n            fxNow = undefined;\n        });\n        return fxNow = Date.now();\n    }\n    // Generate parameters to create a standard animation\n    function genFx(type, includeWidth) {\n        var which, i = 0, attrs = {\n            height: type\n        };\n        // If we include width, step value is 1 to do all cssExpand values,\n        // otherwise step value is 2 to skip over Left and Right\n        includeWidth = includeWidth ? 1 : 0;\n        for(; i < 4; i += 2 - includeWidth){\n            which = cssExpand[i];\n            attrs[\"margin\" + which] = attrs[\"padding\" + which] = type;\n        }\n        if (includeWidth) attrs.opacity = attrs.width = type;\n        return attrs;\n    }\n    function createTween(value, prop, animation) {\n        var tween, collection = (Animation.tweeners[prop] || []).concat(Animation.tweeners[\"*\"]), index = 0, length = collection.length;\n        for(; index < length; index++){\n            if (tween = collection[index].call(animation, prop, value)) // We're done with this property\n            return tween;\n        }\n    }\n    function defaultPrefilter(elem, props, opts) {\n        var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, isBox = \"width\" in props || \"height\" in props, anim = this, orig = {}, style = elem.style, hidden = elem.nodeType && isHiddenWithinTree(elem), dataShow = dataPriv.get(elem, \"fxshow\");\n        // Queue-skipping animations hijack the fx hooks\n        if (!opts.queue) {\n            hooks = jQuery._queueHooks(elem, \"fx\");\n            if (hooks.unqueued == null) {\n                hooks.unqueued = 0;\n                oldfire = hooks.empty.fire;\n                hooks.empty.fire = function() {\n                    if (!hooks.unqueued) oldfire();\n                };\n            }\n            hooks.unqueued++;\n            anim.always(function() {\n                // Ensure the complete handler is called before this completes\n                anim.always(function() {\n                    hooks.unqueued--;\n                    if (!jQuery.queue(elem, \"fx\").length) hooks.empty.fire();\n                });\n            });\n        }\n        // Detect show/hide animations\n        for(prop in props){\n            value = props[prop];\n            if (rfxtypes.test(value)) {\n                delete props[prop];\n                toggle = toggle || value === \"toggle\";\n                if (value === (hidden ? \"hide\" : \"show\")) {\n                    // Pretend to be hidden if this is a \"show\" and\n                    // there is still data from a stopped show/hide\n                    if (value === \"show\" && dataShow && dataShow[prop] !== undefined) hidden = true;\n                    else continue;\n                }\n                orig[prop] = dataShow && dataShow[prop] || jQuery.style(elem, prop);\n            }\n        }\n        // Bail out if this is a no-op like .hide().hide()\n        propTween = !jQuery.isEmptyObject(props);\n        if (!propTween && jQuery.isEmptyObject(orig)) return;\n        // Restrict \"overflow\" and \"display\" styles during box animations\n        if (isBox && elem.nodeType === 1) {\n            // Support: IE <=9 - 11, Edge 12 - 15\n            // Record all 3 overflow attributes because IE does not infer the shorthand\n            // from identically-valued overflowX and overflowY and Edge just mirrors\n            // the overflowX value there.\n            opts.overflow = [\n                style.overflow,\n                style.overflowX,\n                style.overflowY\n            ];\n            // Identify a display type, preferring old show/hide data over the CSS cascade\n            restoreDisplay = dataShow && dataShow.display;\n            if (restoreDisplay == null) restoreDisplay = dataPriv.get(elem, \"display\");\n            display = jQuery.css(elem, \"display\");\n            if (display === \"none\") {\n                if (restoreDisplay) display = restoreDisplay;\n                else {\n                    // Get nonempty value(s) by temporarily forcing visibility\n                    showHide([\n                        elem\n                    ], true);\n                    restoreDisplay = elem.style.display || restoreDisplay;\n                    display = jQuery.css(elem, \"display\");\n                    showHide([\n                        elem\n                    ]);\n                }\n            }\n            // Animate inline elements as inline-block\n            if (display === \"inline\" || display === \"inline-block\" && restoreDisplay != null) {\n                if (jQuery.css(elem, \"float\") === \"none\") {\n                    // Restore the original display value at the end of pure show/hide animations\n                    if (!propTween) {\n                        anim.done(function() {\n                            style.display = restoreDisplay;\n                        });\n                        if (restoreDisplay == null) {\n                            display = style.display;\n                            restoreDisplay = display === \"none\" ? \"\" : display;\n                        }\n                    }\n                    style.display = \"inline-block\";\n                }\n            }\n        }\n        if (opts.overflow) {\n            style.overflow = \"hidden\";\n            anim.always(function() {\n                style.overflow = opts.overflow[0];\n                style.overflowX = opts.overflow[1];\n                style.overflowY = opts.overflow[2];\n            });\n        }\n        // Implement show/hide animations\n        propTween = false;\n        for(prop in orig){\n            // General show/hide setup for this element animation\n            if (!propTween) {\n                if (dataShow) {\n                    if (\"hidden\" in dataShow) hidden = dataShow.hidden;\n                } else dataShow = dataPriv.access(elem, \"fxshow\", {\n                    display: restoreDisplay\n                });\n                // Store hidden/visible for toggle so `.stop().toggle()` \"reverses\"\n                if (toggle) dataShow.hidden = !hidden;\n                // Show elements before animating them\n                if (hidden) showHide([\n                    elem\n                ], true);\n                /* eslint-disable no-loop-func */ anim.done(function() {\n                    /* eslint-enable no-loop-func */ // The final step of a \"hide\" animation is actually hiding the element\n                    if (!hidden) showHide([\n                        elem\n                    ]);\n                    dataPriv.remove(elem, \"fxshow\");\n                    for(prop in orig)jQuery.style(elem, prop, orig[prop]);\n                });\n            }\n            // Per-property setup\n            propTween = createTween(hidden ? dataShow[prop] : 0, prop, anim);\n            if (!(prop in dataShow)) {\n                dataShow[prop] = propTween.start;\n                if (hidden) {\n                    propTween.end = propTween.start;\n                    propTween.start = 0;\n                }\n            }\n        }\n    }\n    function propFilter(props, specialEasing) {\n        var index, name, easing, value, hooks;\n        // camelCase, specialEasing and expand cssHook pass\n        for(index in props){\n            name = camelCase(index);\n            easing = specialEasing[name];\n            value = props[index];\n            if (Array.isArray(value)) {\n                easing = value[1];\n                value = props[index] = value[0];\n            }\n            if (index !== name) {\n                props[name] = value;\n                delete props[index];\n            }\n            hooks = jQuery.cssHooks[name];\n            if (hooks && \"expand\" in hooks) {\n                value = hooks.expand(value);\n                delete props[name];\n                // Not quite $.extend, this won't overwrite existing keys.\n                // Reusing 'index' because we have the correct \"name\"\n                for(index in value)if (!(index in props)) {\n                    props[index] = value[index];\n                    specialEasing[index] = easing;\n                }\n            } else specialEasing[name] = easing;\n        }\n    }\n    function Animation(elem, properties, options) {\n        var result, stopped, index = 0, length = Animation.prefilters.length, deferred = jQuery.Deferred().always(function() {\n            // Don't match elem in the :animated selector\n            delete tick.elem;\n        }), tick = function() {\n            if (stopped) return false;\n            var currentTime = fxNow || createFxNow(), remaining = Math.max(0, animation.startTime + animation.duration - currentTime), // Support: Android 2.3 only\n            // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (trac-12497)\n            temp = remaining / animation.duration || 0, percent = 1 - temp, index = 0, length = animation.tweens.length;\n            for(; index < length; index++)animation.tweens[index].run(percent);\n            deferred.notifyWith(elem, [\n                animation,\n                percent,\n                remaining\n            ]);\n            // If there's more to do, yield\n            if (percent < 1 && length) return remaining;\n            // If this was an empty animation, synthesize a final progress notification\n            if (!length) deferred.notifyWith(elem, [\n                animation,\n                1,\n                0\n            ]);\n            // Resolve the animation and report its conclusion\n            deferred.resolveWith(elem, [\n                animation\n            ]);\n            return false;\n        }, animation = deferred.promise({\n            elem: elem,\n            props: jQuery.extend({}, properties),\n            opts: jQuery.extend(true, {\n                specialEasing: {},\n                easing: jQuery.easing._default\n            }, options),\n            originalProperties: properties,\n            originalOptions: options,\n            startTime: fxNow || createFxNow(),\n            duration: options.duration,\n            tweens: [],\n            createTween: function(prop, end) {\n                var tween = jQuery.Tween(elem, animation.opts, prop, end, animation.opts.specialEasing[prop] || animation.opts.easing);\n                animation.tweens.push(tween);\n                return tween;\n            },\n            stop: function(gotoEnd) {\n                var index = 0, // If we are going to the end, we want to run all the tweens\n                // otherwise we skip this part\n                length = gotoEnd ? animation.tweens.length : 0;\n                if (stopped) return this;\n                stopped = true;\n                for(; index < length; index++)animation.tweens[index].run(1);\n                // Resolve when we played the last frame; otherwise, reject\n                if (gotoEnd) {\n                    deferred.notifyWith(elem, [\n                        animation,\n                        1,\n                        0\n                    ]);\n                    deferred.resolveWith(elem, [\n                        animation,\n                        gotoEnd\n                    ]);\n                } else deferred.rejectWith(elem, [\n                    animation,\n                    gotoEnd\n                ]);\n                return this;\n            }\n        }), props = animation.props;\n        propFilter(props, animation.opts.specialEasing);\n        for(; index < length; index++){\n            result = Animation.prefilters[index].call(animation, elem, props, animation.opts);\n            if (result) {\n                if (isFunction(result.stop)) jQuery._queueHooks(animation.elem, animation.opts.queue).stop = result.stop.bind(result);\n                return result;\n            }\n        }\n        jQuery.map(props, createTween, animation);\n        if (isFunction(animation.opts.start)) animation.opts.start.call(elem, animation);\n        // Attach callbacks from options\n        animation.progress(animation.opts.progress).done(animation.opts.done, animation.opts.complete).fail(animation.opts.fail).always(animation.opts.always);\n        jQuery.fx.timer(jQuery.extend(tick, {\n            elem: elem,\n            anim: animation,\n            queue: animation.opts.queue\n        }));\n        return animation;\n    }\n    jQuery.Animation = jQuery.extend(Animation, {\n        tweeners: {\n            \"*\": [\n                function(prop, value) {\n                    var tween = this.createTween(prop, value);\n                    adjustCSS(tween.elem, prop, rcssNum.exec(value), tween);\n                    return tween;\n                }\n            ]\n        },\n        tweener: function(props, callback) {\n            if (isFunction(props)) {\n                callback = props;\n                props = [\n                    \"*\"\n                ];\n            } else props = props.match(rnothtmlwhite);\n            var prop, index = 0, length = props.length;\n            for(; index < length; index++){\n                prop = props[index];\n                Animation.tweeners[prop] = Animation.tweeners[prop] || [];\n                Animation.tweeners[prop].unshift(callback);\n            }\n        },\n        prefilters: [\n            defaultPrefilter\n        ],\n        prefilter: function(callback, prepend) {\n            if (prepend) Animation.prefilters.unshift(callback);\n            else Animation.prefilters.push(callback);\n        }\n    });\n    jQuery.speed = function(speed, easing, fn) {\n        var opt = speed && typeof speed === \"object\" ? jQuery.extend({}, speed) : {\n            complete: fn || !fn && easing || isFunction(speed) && speed,\n            duration: speed,\n            easing: fn && easing || easing && !isFunction(easing) && easing\n        };\n        // Go to the end state if fx are off\n        if (jQuery.fx.off) opt.duration = 0;\n        else if (typeof opt.duration !== \"number\") {\n            if (opt.duration in jQuery.fx.speeds) opt.duration = jQuery.fx.speeds[opt.duration];\n            else opt.duration = jQuery.fx.speeds._default;\n        }\n        // Normalize opt.queue - true/undefined/null -> \"fx\"\n        if (opt.queue == null || opt.queue === true) opt.queue = \"fx\";\n        // Queueing\n        opt.old = opt.complete;\n        opt.complete = function() {\n            if (isFunction(opt.old)) opt.old.call(this);\n            if (opt.queue) jQuery.dequeue(this, opt.queue);\n        };\n        return opt;\n    };\n    jQuery.fn.extend({\n        fadeTo: function(speed, to, easing, callback) {\n            // Show any hidden elements after setting opacity to 0\n            return this.filter(isHiddenWithinTree).css(\"opacity\", 0).show()// Animate to the value specified\n            .end().animate({\n                opacity: to\n            }, speed, easing, callback);\n        },\n        animate: function(prop, speed, easing, callback) {\n            var empty = jQuery.isEmptyObject(prop), optall = jQuery.speed(speed, easing, callback), doAnimation = function() {\n                // Operate on a copy of prop so per-property easing won't be lost\n                var anim = Animation(this, jQuery.extend({}, prop), optall);\n                // Empty animations, or finishing resolves immediately\n                if (empty || dataPriv.get(this, \"finish\")) anim.stop(true);\n            };\n            doAnimation.finish = doAnimation;\n            return empty || optall.queue === false ? this.each(doAnimation) : this.queue(optall.queue, doAnimation);\n        },\n        stop: function(type, clearQueue, gotoEnd) {\n            var stopQueue = function(hooks) {\n                var stop = hooks.stop;\n                delete hooks.stop;\n                stop(gotoEnd);\n            };\n            if (typeof type !== \"string\") {\n                gotoEnd = clearQueue;\n                clearQueue = type;\n                type = undefined;\n            }\n            if (clearQueue) this.queue(type || \"fx\", []);\n            return this.each(function() {\n                var dequeue = true, index = type != null && type + \"queueHooks\", timers = jQuery.timers, data = dataPriv.get(this);\n                if (index) {\n                    if (data[index] && data[index].stop) stopQueue(data[index]);\n                } else {\n                    for(index in data)if (data[index] && data[index].stop && rrun.test(index)) stopQueue(data[index]);\n                }\n                for(index = timers.length; index--;)if (timers[index].elem === this && (type == null || timers[index].queue === type)) {\n                    timers[index].anim.stop(gotoEnd);\n                    dequeue = false;\n                    timers.splice(index, 1);\n                }\n                // Start the next in the queue if the last step wasn't forced.\n                // Timers currently will call their complete callbacks, which\n                // will dequeue but only if they were gotoEnd.\n                if (dequeue || !gotoEnd) jQuery.dequeue(this, type);\n            });\n        },\n        finish: function(type) {\n            if (type !== false) type = type || \"fx\";\n            return this.each(function() {\n                var index, data = dataPriv.get(this), queue = data[type + \"queue\"], hooks = data[type + \"queueHooks\"], timers = jQuery.timers, length = queue ? queue.length : 0;\n                // Enable finishing flag on private data\n                data.finish = true;\n                // Empty the queue first\n                jQuery.queue(this, type, []);\n                if (hooks && hooks.stop) hooks.stop.call(this, true);\n                // Look for any active animations, and finish them\n                for(index = timers.length; index--;)if (timers[index].elem === this && timers[index].queue === type) {\n                    timers[index].anim.stop(true);\n                    timers.splice(index, 1);\n                }\n                // Look for any animations in the old queue and finish them\n                for(index = 0; index < length; index++)if (queue[index] && queue[index].finish) queue[index].finish.call(this);\n                // Turn off finishing flag\n                delete data.finish;\n            });\n        }\n    });\n    jQuery.each([\n        \"toggle\",\n        \"show\",\n        \"hide\"\n    ], function(_i, name) {\n        var cssFn = jQuery.fn[name];\n        jQuery.fn[name] = function(speed, easing, callback) {\n            return speed == null || typeof speed === \"boolean\" ? cssFn.apply(this, arguments) : this.animate(genFx(name, true), speed, easing, callback);\n        };\n    });\n    // Generate shortcuts for custom animations\n    jQuery.each({\n        slideDown: genFx(\"show\"),\n        slideUp: genFx(\"hide\"),\n        slideToggle: genFx(\"toggle\"),\n        fadeIn: {\n            opacity: \"show\"\n        },\n        fadeOut: {\n            opacity: \"hide\"\n        },\n        fadeToggle: {\n            opacity: \"toggle\"\n        }\n    }, function(name, props) {\n        jQuery.fn[name] = function(speed, easing, callback) {\n            return this.animate(props, speed, easing, callback);\n        };\n    });\n    jQuery.timers = [];\n    jQuery.fx.tick = function() {\n        var timer, i = 0, timers = jQuery.timers;\n        fxNow = Date.now();\n        for(; i < timers.length; i++){\n            timer = timers[i];\n            // Run the timer and safely remove it when done (allowing for external removal)\n            if (!timer() && timers[i] === timer) timers.splice(i--, 1);\n        }\n        if (!timers.length) jQuery.fx.stop();\n        fxNow = undefined;\n    };\n    jQuery.fx.timer = function(timer) {\n        jQuery.timers.push(timer);\n        jQuery.fx.start();\n    };\n    jQuery.fx.interval = 13;\n    jQuery.fx.start = function() {\n        if (inProgress) return;\n        inProgress = true;\n        schedule();\n    };\n    jQuery.fx.stop = function() {\n        inProgress = null;\n    };\n    jQuery.fx.speeds = {\n        slow: 600,\n        fast: 200,\n        // Default speed\n        _default: 400\n    };\n    // Based off of the plugin by Clint Helfers, with permission.\n    jQuery.fn.delay = function(time, type) {\n        time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;\n        type = type || \"fx\";\n        return this.queue(type, function(next, hooks) {\n            var timeout = window1.setTimeout(next, time);\n            hooks.stop = function() {\n                window1.clearTimeout(timeout);\n            };\n        });\n    };\n    (function() {\n        var input = document.createElement(\"input\"), select = document.createElement(\"select\"), opt = select.appendChild(document.createElement(\"option\"));\n        input.type = \"checkbox\";\n        // Support: Android <=4.3 only\n        // Default value for a checkbox should be \"on\"\n        support.checkOn = input.value !== \"\";\n        // Support: IE <=11 only\n        // Must access selectedIndex to make default options select\n        support.optSelected = opt.selected;\n        // Support: IE <=11 only\n        // An input loses its value after becoming a radio\n        input = document.createElement(\"input\");\n        input.value = \"t\";\n        input.type = \"radio\";\n        support.radioValue = input.value === \"t\";\n    })();\n    var boolHook, attrHandle = jQuery.expr.attrHandle;\n    jQuery.fn.extend({\n        attr: function(name, value) {\n            return access(this, jQuery.attr, name, value, arguments.length > 1);\n        },\n        removeAttr: function(name) {\n            return this.each(function() {\n                jQuery.removeAttr(this, name);\n            });\n        }\n    });\n    jQuery.extend({\n        attr: function(elem, name, value) {\n            var ret, hooks, nType = elem.nodeType;\n            // Don't get/set attributes on text, comment and attribute nodes\n            if (nType === 3 || nType === 8 || nType === 2) return;\n            // Fallback to prop when attributes are not supported\n            if (typeof elem.getAttribute === \"undefined\") return jQuery.prop(elem, name, value);\n            // Attribute hooks are determined by the lowercase version\n            // Grab necessary hook if one is defined\n            if (nType !== 1 || !jQuery.isXMLDoc(elem)) hooks = jQuery.attrHooks[name.toLowerCase()] || (jQuery.expr.match.bool.test(name) ? boolHook : undefined);\n            if (value !== undefined) {\n                if (value === null) {\n                    jQuery.removeAttr(elem, name);\n                    return;\n                }\n                if (hooks && \"set\" in hooks && (ret = hooks.set(elem, value, name)) !== undefined) return ret;\n                elem.setAttribute(name, value + \"\");\n                return value;\n            }\n            if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) return ret;\n            ret = jQuery.find.attr(elem, name);\n            // Non-existent attributes return null, we normalize to undefined\n            return ret == null ? undefined : ret;\n        },\n        attrHooks: {\n            type: {\n                set: function(elem, value) {\n                    if (!support.radioValue && value === \"radio\" && nodeName(elem, \"input\")) {\n                        var val = elem.value;\n                        elem.setAttribute(\"type\", value);\n                        if (val) elem.value = val;\n                        return value;\n                    }\n                }\n            }\n        },\n        removeAttr: function(elem, value) {\n            var name, i = 0, // Attribute names can contain non-HTML whitespace characters\n            // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n            attrNames = value && value.match(rnothtmlwhite);\n            if (attrNames && elem.nodeType === 1) while(name = attrNames[i++])elem.removeAttribute(name);\n        }\n    });\n    // Hooks for boolean attributes\n    boolHook = {\n        set: function(elem, value, name) {\n            if (value === false) // Remove boolean attributes when set to false\n            jQuery.removeAttr(elem, name);\n            else elem.setAttribute(name, name);\n            return name;\n        }\n    };\n    jQuery.each(jQuery.expr.match.bool.source.match(/\\w+/g), function(_i, name) {\n        var getter = attrHandle[name] || jQuery.find.attr;\n        attrHandle[name] = function(elem, name, isXML) {\n            var ret, handle, lowercaseName = name.toLowerCase();\n            if (!isXML) {\n                // Avoid an infinite loop by temporarily removing this function from the getter\n                handle = attrHandle[lowercaseName];\n                attrHandle[lowercaseName] = ret;\n                ret = getter(elem, name, isXML) != null ? lowercaseName : null;\n                attrHandle[lowercaseName] = handle;\n            }\n            return ret;\n        };\n    });\n    var rfocusable = /^(?:input|select|textarea|button)$/i, rclickable = /^(?:a|area)$/i;\n    jQuery.fn.extend({\n        prop: function(name, value) {\n            return access(this, jQuery.prop, name, value, arguments.length > 1);\n        },\n        removeProp: function(name) {\n            return this.each(function() {\n                delete this[jQuery.propFix[name] || name];\n            });\n        }\n    });\n    jQuery.extend({\n        prop: function(elem, name, value) {\n            var ret, hooks, nType = elem.nodeType;\n            // Don't get/set properties on text, comment and attribute nodes\n            if (nType === 3 || nType === 8 || nType === 2) return;\n            if (nType !== 1 || !jQuery.isXMLDoc(elem)) {\n                // Fix name and attach hooks\n                name = jQuery.propFix[name] || name;\n                hooks = jQuery.propHooks[name];\n            }\n            if (value !== undefined) {\n                if (hooks && \"set\" in hooks && (ret = hooks.set(elem, value, name)) !== undefined) return ret;\n                return elem[name] = value;\n            }\n            if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) return ret;\n            return elem[name];\n        },\n        propHooks: {\n            tabIndex: {\n                get: function(elem) {\n                    // Support: IE <=9 - 11 only\n                    // elem.tabIndex doesn't always return the\n                    // correct value when it hasn't been explicitly set\n                    // Use proper attribute retrieval (trac-12072)\n                    var tabindex = jQuery.find.attr(elem, \"tabindex\");\n                    if (tabindex) return parseInt(tabindex, 10);\n                    if (rfocusable.test(elem.nodeName) || rclickable.test(elem.nodeName) && elem.href) return 0;\n                    return -1;\n                }\n            }\n        },\n        propFix: {\n            \"for\": \"htmlFor\",\n            \"class\": \"className\"\n        }\n    });\n    // Support: IE <=11 only\n    // Accessing the selectedIndex property\n    // forces the browser to respect setting selected\n    // on the option\n    // The getter ensures a default option is selected\n    // when in an optgroup\n    // eslint rule \"no-unused-expressions\" is disabled for this code\n    // since it considers such accessions noop\n    if (!support.optSelected) jQuery.propHooks.selected = {\n        get: function(elem) {\n            /* eslint no-unused-expressions: \"off\" */ var parent = elem.parentNode;\n            if (parent && parent.parentNode) parent.parentNode.selectedIndex;\n            return null;\n        },\n        set: function(elem) {\n            /* eslint no-unused-expressions: \"off\" */ var parent = elem.parentNode;\n            if (parent) {\n                parent.selectedIndex;\n                if (parent.parentNode) parent.parentNode.selectedIndex;\n            }\n        }\n    };\n    jQuery.each([\n        \"tabIndex\",\n        \"readOnly\",\n        \"maxLength\",\n        \"cellSpacing\",\n        \"cellPadding\",\n        \"rowSpan\",\n        \"colSpan\",\n        \"useMap\",\n        \"frameBorder\",\n        \"contentEditable\"\n    ], function() {\n        jQuery.propFix[this.toLowerCase()] = this;\n    });\n    // Strip and collapse whitespace according to HTML spec\n    // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\n    function stripAndCollapse(value) {\n        var tokens = value.match(rnothtmlwhite) || [];\n        return tokens.join(\" \");\n    }\n    function getClass(elem) {\n        return elem.getAttribute && elem.getAttribute(\"class\") || \"\";\n    }\n    function classesToArray(value) {\n        if (Array.isArray(value)) return value;\n        if (typeof value === \"string\") return value.match(rnothtmlwhite) || [];\n        return [];\n    }\n    jQuery.fn.extend({\n        addClass: function(value) {\n            var classNames, cur, curValue, className, i, finalValue;\n            if (isFunction(value)) return this.each(function(j) {\n                jQuery(this).addClass(value.call(this, j, getClass(this)));\n            });\n            classNames = classesToArray(value);\n            if (classNames.length) return this.each(function() {\n                curValue = getClass(this);\n                cur = this.nodeType === 1 && \" \" + stripAndCollapse(curValue) + \" \";\n                if (cur) {\n                    for(i = 0; i < classNames.length; i++){\n                        className = classNames[i];\n                        if (cur.indexOf(\" \" + className + \" \") < 0) cur += className + \" \";\n                    }\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) this.setAttribute(\"class\", finalValue);\n                }\n            });\n            return this;\n        },\n        removeClass: function(value) {\n            var classNames, cur, curValue, className, i, finalValue;\n            if (isFunction(value)) return this.each(function(j) {\n                jQuery(this).removeClass(value.call(this, j, getClass(this)));\n            });\n            if (!arguments.length) return this.attr(\"class\", \"\");\n            classNames = classesToArray(value);\n            if (classNames.length) return this.each(function() {\n                curValue = getClass(this);\n                // This expression is here for better compressibility (see addClass)\n                cur = this.nodeType === 1 && \" \" + stripAndCollapse(curValue) + \" \";\n                if (cur) {\n                    for(i = 0; i < classNames.length; i++){\n                        className = classNames[i];\n                        // Remove *all* instances\n                        while(cur.indexOf(\" \" + className + \" \") > -1)cur = cur.replace(\" \" + className + \" \", \" \");\n                    }\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) this.setAttribute(\"class\", finalValue);\n                }\n            });\n            return this;\n        },\n        toggleClass: function(value, stateVal) {\n            var classNames, className, i, self, type = typeof value, isValidValue = type === \"string\" || Array.isArray(value);\n            if (isFunction(value)) return this.each(function(i) {\n                jQuery(this).toggleClass(value.call(this, i, getClass(this), stateVal), stateVal);\n            });\n            if (typeof stateVal === \"boolean\" && isValidValue) return stateVal ? this.addClass(value) : this.removeClass(value);\n            classNames = classesToArray(value);\n            return this.each(function() {\n                if (isValidValue) {\n                    // Toggle individual class names\n                    self = jQuery(this);\n                    for(i = 0; i < classNames.length; i++){\n                        className = classNames[i];\n                        // Check each className given, space separated list\n                        if (self.hasClass(className)) self.removeClass(className);\n                        else self.addClass(className);\n                    }\n                // Toggle whole class name\n                } else if (value === undefined || type === \"boolean\") {\n                    className = getClass(this);\n                    if (className) // Store className if set\n                    dataPriv.set(this, \"__className__\", className);\n                    // If the element has a class name or if we're passed `false`,\n                    // then remove the whole classname (if there was one, the above saved it).\n                    // Otherwise bring back whatever was previously saved (if anything),\n                    // falling back to the empty string if nothing was stored.\n                    if (this.setAttribute) this.setAttribute(\"class\", className || value === false ? \"\" : dataPriv.get(this, \"__className__\") || \"\");\n                }\n            });\n        },\n        hasClass: function(selector) {\n            var className, elem, i = 0;\n            className = \" \" + selector + \" \";\n            while(elem = this[i++]){\n                if (elem.nodeType === 1 && (\" \" + stripAndCollapse(getClass(elem)) + \" \").indexOf(className) > -1) return true;\n            }\n            return false;\n        }\n    });\n    var rreturn = /\\r/g;\n    jQuery.fn.extend({\n        val: function(value) {\n            var hooks, ret, valueIsFunction, elem = this[0];\n            if (!arguments.length) {\n                if (elem) {\n                    hooks = jQuery.valHooks[elem.type] || jQuery.valHooks[elem.nodeName.toLowerCase()];\n                    if (hooks && \"get\" in hooks && (ret = hooks.get(elem, \"value\")) !== undefined) return ret;\n                    ret = elem.value;\n                    // Handle most common string cases\n                    if (typeof ret === \"string\") return ret.replace(rreturn, \"\");\n                    // Handle cases where value is null/undef or number\n                    return ret == null ? \"\" : ret;\n                }\n                return;\n            }\n            valueIsFunction = isFunction(value);\n            return this.each(function(i) {\n                var val;\n                if (this.nodeType !== 1) return;\n                if (valueIsFunction) val = value.call(this, i, jQuery(this).val());\n                else val = value;\n                // Treat null/undefined as \"\"; convert numbers to string\n                if (val == null) val = \"\";\n                else if (typeof val === \"number\") val += \"\";\n                else if (Array.isArray(val)) val = jQuery.map(val, function(value) {\n                    return value == null ? \"\" : value + \"\";\n                });\n                hooks = jQuery.valHooks[this.type] || jQuery.valHooks[this.nodeName.toLowerCase()];\n                // If set returns undefined, fall back to normal setting\n                if (!hooks || !(\"set\" in hooks) || hooks.set(this, val, \"value\") === undefined) this.value = val;\n            });\n        }\n    });\n    jQuery.extend({\n        valHooks: {\n            option: {\n                get: function(elem) {\n                    var val = jQuery.find.attr(elem, \"value\");\n                    return val != null ? val : // Support: IE <=10 - 11 only\n                    // option.text throws exceptions (trac-14686, trac-14858)\n                    // Strip and collapse whitespace\n                    // https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n                    stripAndCollapse(jQuery.text(elem));\n                }\n            },\n            select: {\n                get: function(elem) {\n                    var value, option, i, options = elem.options, index = elem.selectedIndex, one = elem.type === \"select-one\", values = one ? null : [], max = one ? index + 1 : options.length;\n                    if (index < 0) i = max;\n                    else i = one ? index : 0;\n                    // Loop through all the selected options\n                    for(; i < max; i++){\n                        option = options[i];\n                        // Support: IE <=9 only\n                        // IE8-9 doesn't update selected after form reset (trac-2551)\n                        if ((option.selected || i === index) && // Don't return options that are disabled or in a disabled optgroup\n                        !option.disabled && (!option.parentNode.disabled || !nodeName(option.parentNode, \"optgroup\"))) {\n                            // Get the specific value for the option\n                            value = jQuery(option).val();\n                            // We don't need an array for one selects\n                            if (one) return value;\n                            // Multi-Selects return an array\n                            values.push(value);\n                        }\n                    }\n                    return values;\n                },\n                set: function(elem, value) {\n                    var optionSet, option, options = elem.options, values = jQuery.makeArray(value), i = options.length;\n                    while(i--){\n                        option = options[i];\n                        /* eslint-disable no-cond-assign */ if (option.selected = jQuery.inArray(jQuery.valHooks.option.get(option), values) > -1) optionSet = true;\n                    /* eslint-enable no-cond-assign */ }\n                    // Force browsers to behave consistently when non-matching value is set\n                    if (!optionSet) elem.selectedIndex = -1;\n                    return values;\n                }\n            }\n        }\n    });\n    // Radios and checkboxes getter/setter\n    jQuery.each([\n        \"radio\",\n        \"checkbox\"\n    ], function() {\n        jQuery.valHooks[this] = {\n            set: function(elem, value) {\n                if (Array.isArray(value)) return elem.checked = jQuery.inArray(jQuery(elem).val(), value) > -1;\n            }\n        };\n        if (!support.checkOn) jQuery.valHooks[this].get = function(elem) {\n            return elem.getAttribute(\"value\") === null ? \"on\" : elem.value;\n        };\n    });\n    // Return jQuery for attributes-only inclusion\n    var location = window1.location;\n    var nonce = {\n        guid: Date.now()\n    };\n    var rquery = /\\?/;\n    // Cross-browser xml parsing\n    jQuery.parseXML = function(data) {\n        var xml, parserErrorElem;\n        if (!data || typeof data !== \"string\") return null;\n        // Support: IE 9 - 11 only\n        // IE throws on parseFromString with invalid input.\n        try {\n            xml = new window1.DOMParser().parseFromString(data, \"text/xml\");\n        } catch (e) {}\n        parserErrorElem = xml && xml.getElementsByTagName(\"parsererror\")[0];\n        if (!xml || parserErrorElem) jQuery.error(\"Invalid XML: \" + (parserErrorElem ? jQuery.map(parserErrorElem.childNodes, function(el) {\n            return el.textContent;\n        }).join(\"\\n\") : data));\n        return xml;\n    };\n    var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, stopPropagationCallback = function(e) {\n        e.stopPropagation();\n    };\n    jQuery.extend(jQuery.event, {\n        trigger: function(event, data, elem, onlyHandlers) {\n            var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, eventPath = [\n                elem || document\n            ], type = hasOwn.call(event, \"type\") ? event.type : event, namespaces = hasOwn.call(event, \"namespace\") ? event.namespace.split(\".\") : [];\n            cur = lastElement = tmp = elem = elem || document;\n            // Don't do events on text and comment nodes\n            if (elem.nodeType === 3 || elem.nodeType === 8) return;\n            // focus/blur morphs to focusin/out; ensure we're not firing them right now\n            if (rfocusMorph.test(type + jQuery.event.triggered)) return;\n            if (type.indexOf(\".\") > -1) {\n                // Namespaced trigger; create a regexp to match event type in handle()\n                namespaces = type.split(\".\");\n                type = namespaces.shift();\n                namespaces.sort();\n            }\n            ontype = type.indexOf(\":\") < 0 && \"on\" + type;\n            // Caller can pass in a jQuery.Event object, Object, or just an event type string\n            event = event[jQuery.expando] ? event : new jQuery.Event(type, typeof event === \"object\" && event);\n            // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n            event.isTrigger = onlyHandlers ? 2 : 3;\n            event.namespace = namespaces.join(\".\");\n            event.rnamespace = event.namespace ? new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\") : null;\n            // Clean up the event in case it is being reused\n            event.result = undefined;\n            if (!event.target) event.target = elem;\n            // Clone any incoming data and prepend the event, creating the handler arg list\n            data = data == null ? [\n                event\n            ] : jQuery.makeArray(data, [\n                event\n            ]);\n            // Allow special events to draw outside the lines\n            special = jQuery.event.special[type] || {};\n            if (!onlyHandlers && special.trigger && special.trigger.apply(elem, data) === false) return;\n            // Determine event propagation path in advance, per W3C events spec (trac-9951)\n            // Bubble up to document, then to window; watch for a global ownerDocument var (trac-9724)\n            if (!onlyHandlers && !special.noBubble && !isWindow(elem)) {\n                bubbleType = special.delegateType || type;\n                if (!rfocusMorph.test(bubbleType + type)) cur = cur.parentNode;\n                for(; cur; cur = cur.parentNode){\n                    eventPath.push(cur);\n                    tmp = cur;\n                }\n                // Only add window if we got to document (e.g., not plain obj or detached DOM)\n                if (tmp === (elem.ownerDocument || document)) eventPath.push(tmp.defaultView || tmp.parentWindow || window1);\n            }\n            // Fire handlers on the event path\n            i = 0;\n            while((cur = eventPath[i++]) && !event.isPropagationStopped()){\n                lastElement = cur;\n                event.type = i > 1 ? bubbleType : special.bindType || type;\n                // jQuery handler\n                handle = (dataPriv.get(cur, \"events\") || Object.create(null))[event.type] && dataPriv.get(cur, \"handle\");\n                if (handle) handle.apply(cur, data);\n                // Native handler\n                handle = ontype && cur[ontype];\n                if (handle && handle.apply && acceptData(cur)) {\n                    event.result = handle.apply(cur, data);\n                    if (event.result === false) event.preventDefault();\n                }\n            }\n            event.type = type;\n            // If nobody prevented the default action, do it now\n            if (!onlyHandlers && !event.isDefaultPrevented()) {\n                if ((!special._default || special._default.apply(eventPath.pop(), data) === false) && acceptData(elem)) // Call a native DOM method on the target with the same name as the event.\n                // Don't do default actions on window, that's where global variables be (trac-6170)\n                {\n                    if (ontype && isFunction(elem[type]) && !isWindow(elem)) {\n                        // Don't re-trigger an onFOO event when we call its FOO() method\n                        tmp = elem[ontype];\n                        if (tmp) elem[ontype] = null;\n                        // Prevent re-triggering of the same event, since we already bubbled it above\n                        jQuery.event.triggered = type;\n                        if (event.isPropagationStopped()) lastElement.addEventListener(type, stopPropagationCallback);\n                        elem[type]();\n                        if (event.isPropagationStopped()) lastElement.removeEventListener(type, stopPropagationCallback);\n                        jQuery.event.triggered = undefined;\n                        if (tmp) elem[ontype] = tmp;\n                    }\n                }\n            }\n            return event.result;\n        },\n        // Piggyback on a donor event to simulate a different one\n        // Used only for `focus(in | out)` events\n        simulate: function(type, elem, event) {\n            var e = jQuery.extend(new jQuery.Event(), event, {\n                type: type,\n                isSimulated: true\n            });\n            jQuery.event.trigger(e, null, elem);\n        }\n    });\n    jQuery.fn.extend({\n        trigger: function(type, data) {\n            return this.each(function() {\n                jQuery.event.trigger(type, data, this);\n            });\n        },\n        triggerHandler: function(type, data) {\n            var elem = this[0];\n            if (elem) return jQuery.event.trigger(type, data, elem, true);\n        }\n    });\n    var rbracket = /\\[\\]$/, rCRLF = /\\r?\\n/g, rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, rsubmittable = /^(?:input|select|textarea|keygen)/i;\n    function buildParams(prefix, obj, traditional, add) {\n        var name;\n        if (Array.isArray(obj)) // Serialize array item.\n        jQuery.each(obj, function(i, v) {\n            if (traditional || rbracket.test(prefix)) // Treat each array item as a scalar.\n            add(prefix, v);\n            else // Item is non-scalar (array or object), encode its numeric index.\n            buildParams(prefix + \"[\" + (typeof v === \"object\" && v != null ? i : \"\") + \"]\", v, traditional, add);\n        });\n        else if (!traditional && toType(obj) === \"object\") // Serialize object item.\n        for(name in obj)buildParams(prefix + \"[\" + name + \"]\", obj[name], traditional, add);\n        else // Serialize scalar item.\n        add(prefix, obj);\n    }\n    // Serialize an array of form elements or a set of\n    // key/values into a query string\n    jQuery.param = function(a, traditional) {\n        var prefix, s = [], add = function(key, valueOrFunction) {\n            // If value is a function, invoke it and use its return value\n            var value = isFunction(valueOrFunction) ? valueOrFunction() : valueOrFunction;\n            s[s.length] = encodeURIComponent(key) + \"=\" + encodeURIComponent(value == null ? \"\" : value);\n        };\n        if (a == null) return \"\";\n        // If an array was passed in, assume that it is an array of form elements.\n        if (Array.isArray(a) || a.jquery && !jQuery.isPlainObject(a)) // Serialize the form elements\n        jQuery.each(a, function() {\n            add(this.name, this.value);\n        });\n        else // If traditional, encode the \"old\" way (the way 1.3.2 or older\n        // did it), otherwise encode params recursively.\n        for(prefix in a)buildParams(prefix, a[prefix], traditional, add);\n        // Return the resulting serialization\n        return s.join(\"&\");\n    };\n    jQuery.fn.extend({\n        serialize: function() {\n            return jQuery.param(this.serializeArray());\n        },\n        serializeArray: function() {\n            return this.map(function() {\n                // Can add propHook for \"elements\" to filter or add form elements\n                var elements = jQuery.prop(this, \"elements\");\n                return elements ? jQuery.makeArray(elements) : this;\n            }).filter(function() {\n                var type = this.type;\n                // Use .is( \":disabled\" ) so that fieldset[disabled] works\n                return this.name && !jQuery(this).is(\":disabled\") && rsubmittable.test(this.nodeName) && !rsubmitterTypes.test(type) && (this.checked || !rcheckableType.test(type));\n            }).map(function(_i, elem) {\n                var val = jQuery(this).val();\n                if (val == null) return null;\n                if (Array.isArray(val)) return jQuery.map(val, function(val) {\n                    return {\n                        name: elem.name,\n                        value: val.replace(rCRLF, \"\\r\\n\")\n                    };\n                });\n                return {\n                    name: elem.name,\n                    value: val.replace(rCRLF, \"\\r\\n\")\n                };\n            }).get();\n        }\n    });\n    var r20 = /%20/g, rhash = /#.*$/, rantiCache = /([?&])_=[^&]*/, rheaders = /^(.*?):[ \\t]*([^\\r\\n]*)$/mg, // trac-7653, trac-8125, trac-8152: local protocol detection\n    rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, rnoContent = /^(?:GET|HEAD)$/, rprotocol = /^\\/\\//, /* Prefilters\n\t * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)\n\t * 2) These are called:\n\t *    - BEFORE asking for a transport\n\t *    - AFTER param serialization (s.data is a string if s.processData is true)\n\t * 3) key is the dataType\n\t * 4) the catchall symbol \"*\" can be used\n\t * 5) execution will start with transport dataType and THEN continue down to \"*\" if needed\n\t */ prefilters = {}, /* Transports bindings\n\t * 1) key is the dataType\n\t * 2) the catchall symbol \"*\" can be used\n\t * 3) selection will start with transport dataType and THEN go to \"*\" if needed\n\t */ transports = {}, // Avoid comment-prolog char sequence (trac-10098); must appease lint and evade compression\n    allTypes = \"*/\".concat(\"*\"), // Anchor tag for parsing the document origin\n    originAnchor = document.createElement(\"a\");\n    originAnchor.href = location.href;\n    // Base \"constructor\" for jQuery.ajaxPrefilter and jQuery.ajaxTransport\n    function addToPrefiltersOrTransports(structure) {\n        // dataTypeExpression is optional and defaults to \"*\"\n        return function(dataTypeExpression, func) {\n            if (typeof dataTypeExpression !== \"string\") {\n                func = dataTypeExpression;\n                dataTypeExpression = \"*\";\n            }\n            var dataType, i = 0, dataTypes = dataTypeExpression.toLowerCase().match(rnothtmlwhite) || [];\n            if (isFunction(func)) {\n                // For each dataType in the dataTypeExpression\n                while(dataType = dataTypes[i++])// Prepend if requested\n                if (dataType[0] === \"+\") {\n                    dataType = dataType.slice(1) || \"*\";\n                    (structure[dataType] = structure[dataType] || []).unshift(func);\n                // Otherwise append\n                } else (structure[dataType] = structure[dataType] || []).push(func);\n            }\n        };\n    }\n    // Base inspection function for prefilters and transports\n    function inspectPrefiltersOrTransports(structure, options, originalOptions, jqXHR) {\n        var inspected = {}, seekingTransport = structure === transports;\n        function inspect(dataType) {\n            var selected;\n            inspected[dataType] = true;\n            jQuery.each(structure[dataType] || [], function(_, prefilterOrFactory) {\n                var dataTypeOrTransport = prefilterOrFactory(options, originalOptions, jqXHR);\n                if (typeof dataTypeOrTransport === \"string\" && !seekingTransport && !inspected[dataTypeOrTransport]) {\n                    options.dataTypes.unshift(dataTypeOrTransport);\n                    inspect(dataTypeOrTransport);\n                    return false;\n                } else if (seekingTransport) return !(selected = dataTypeOrTransport);\n            });\n            return selected;\n        }\n        return inspect(options.dataTypes[0]) || !inspected[\"*\"] && inspect(\"*\");\n    }\n    // A special extend for ajax options\n    // that takes \"flat\" options (not to be deep extended)\n    // Fixes trac-9887\n    function ajaxExtend(target, src) {\n        var key, deep, flatOptions = jQuery.ajaxSettings.flatOptions || {};\n        for(key in src)if (src[key] !== undefined) (flatOptions[key] ? target : deep || (deep = {}))[key] = src[key];\n        if (deep) jQuery.extend(true, target, deep);\n        return target;\n    }\n    /* Handles responses to an ajax request:\n * - finds the right dataType (mediates between content-type and expected dataType)\n * - returns the corresponding response\n */ function ajaxHandleResponses(s, jqXHR, responses) {\n        var ct, type, finalDataType, firstDataType, contents = s.contents, dataTypes = s.dataTypes;\n        // Remove auto dataType and get content-type in the process\n        while(dataTypes[0] === \"*\"){\n            dataTypes.shift();\n            if (ct === undefined) ct = s.mimeType || jqXHR.getResponseHeader(\"Content-Type\");\n        }\n        // Check if we're dealing with a known content-type\n        if (ct) {\n            for(type in contents)if (contents[type] && contents[type].test(ct)) {\n                dataTypes.unshift(type);\n                break;\n            }\n        }\n        // Check to see if we have a response for the expected dataType\n        if (dataTypes[0] in responses) finalDataType = dataTypes[0];\n        else {\n            // Try convertible dataTypes\n            for(type in responses){\n                if (!dataTypes[0] || s.converters[type + \" \" + dataTypes[0]]) {\n                    finalDataType = type;\n                    break;\n                }\n                if (!firstDataType) firstDataType = type;\n            }\n            // Or just use first one\n            finalDataType = finalDataType || firstDataType;\n        }\n        // If we found a dataType\n        // We add the dataType to the list if needed\n        // and return the corresponding response\n        if (finalDataType) {\n            if (finalDataType !== dataTypes[0]) dataTypes.unshift(finalDataType);\n            return responses[finalDataType];\n        }\n    }\n    /* Chain conversions given the request and the original response\n * Also sets the responseXXX fields on the jqXHR instance\n */ function ajaxConvert(s, response, jqXHR, isSuccess) {\n        var conv2, current, conv, tmp, prev, converters = {}, // Work with a copy of dataTypes in case we need to modify it for conversion\n        dataTypes = s.dataTypes.slice();\n        // Create converters map with lowercased keys\n        if (dataTypes[1]) for(conv in s.converters)converters[conv.toLowerCase()] = s.converters[conv];\n        current = dataTypes.shift();\n        // Convert to each sequential dataType\n        while(current){\n            if (s.responseFields[current]) jqXHR[s.responseFields[current]] = response;\n            // Apply the dataFilter if provided\n            if (!prev && isSuccess && s.dataFilter) response = s.dataFilter(response, s.dataType);\n            prev = current;\n            current = dataTypes.shift();\n            if (current) {\n                // There's only work to do if current dataType is non-auto\n                if (current === \"*\") current = prev;\n                else if (prev !== \"*\" && prev !== current) {\n                    // Seek a direct converter\n                    conv = converters[prev + \" \" + current] || converters[\"* \" + current];\n                    // If none found, seek a pair\n                    if (!conv) for(conv2 in converters){\n                        // If conv2 outputs current\n                        tmp = conv2.split(\" \");\n                        if (tmp[1] === current) {\n                            // If prev can be converted to accepted input\n                            conv = converters[prev + \" \" + tmp[0]] || converters[\"* \" + tmp[0]];\n                            if (conv) {\n                                // Condense equivalence converters\n                                if (conv === true) conv = converters[conv2];\n                                else if (converters[conv2] !== true) {\n                                    current = tmp[0];\n                                    dataTypes.unshift(tmp[1]);\n                                }\n                                break;\n                            }\n                        }\n                    }\n                    // Apply converter (if not an equivalence)\n                    if (conv !== true) {\n                        // Unless errors are allowed to bubble, catch and return them\n                        if (conv && s.throws) response = conv(response);\n                        else try {\n                            response = conv(response);\n                        } catch (e) {\n                            return {\n                                state: \"parsererror\",\n                                error: conv ? e : \"No conversion from \" + prev + \" to \" + current\n                            };\n                        }\n                    }\n                }\n            }\n        }\n        return {\n            state: \"success\",\n            data: response\n        };\n    }\n    jQuery.extend({\n        // Counter for holding the number of active queries\n        active: 0,\n        // Last-Modified header cache for next request\n        lastModified: {},\n        etag: {},\n        ajaxSettings: {\n            url: location.href,\n            type: \"GET\",\n            isLocal: rlocalProtocol.test(location.protocol),\n            global: true,\n            processData: true,\n            async: true,\n            contentType: \"application/x-www-form-urlencoded; charset=UTF-8\",\n            /*\n\t\ttimeout: 0,\n\t\tdata: null,\n\t\tdataType: null,\n\t\tusername: null,\n\t\tpassword: null,\n\t\tcache: null,\n\t\tthrows: false,\n\t\ttraditional: false,\n\t\theaders: {},\n\t\t*/ accepts: {\n                \"*\": allTypes,\n                text: \"text/plain\",\n                html: \"text/html\",\n                xml: \"application/xml, text/xml\",\n                json: \"application/json, text/javascript\"\n            },\n            contents: {\n                xml: /\\bxml\\b/,\n                html: /\\bhtml/,\n                json: /\\bjson\\b/\n            },\n            responseFields: {\n                xml: \"responseXML\",\n                text: \"responseText\",\n                json: \"responseJSON\"\n            },\n            // Data converters\n            // Keys separate source (or catchall \"*\") and destination types with a single space\n            converters: {\n                // Convert anything to text\n                \"* text\": String,\n                // Text to html (true = no transformation)\n                \"text html\": true,\n                // Evaluate text as a json expression\n                \"text json\": JSON.parse,\n                // Parse text as xml\n                \"text xml\": jQuery.parseXML\n            },\n            // For options that shouldn't be deep extended:\n            // you can add your own custom options here if\n            // and when you create one that shouldn't be\n            // deep extended (see ajaxExtend)\n            flatOptions: {\n                url: true,\n                context: true\n            }\n        },\n        // Creates a full fledged settings object into target\n        // with both ajaxSettings and settings fields.\n        // If target is omitted, writes into ajaxSettings.\n        ajaxSetup: function(target, settings) {\n            return settings ? // Building a settings object\n            ajaxExtend(ajaxExtend(target, jQuery.ajaxSettings), settings) : // Extending ajaxSettings\n            ajaxExtend(jQuery.ajaxSettings, target);\n        },\n        ajaxPrefilter: addToPrefiltersOrTransports(prefilters),\n        ajaxTransport: addToPrefiltersOrTransports(transports),\n        // Main method\n        ajax: function(url, options) {\n            // If url is an object, simulate pre-1.5 signature\n            if (typeof url === \"object\") {\n                options = url;\n                url = undefined;\n            }\n            // Force options to be an object\n            options = options || {};\n            var transport, // URL without anti-cache param\n            cacheURL, // Response headers\n            responseHeadersString, responseHeaders, // timeout handle\n            timeoutTimer, // Url cleanup var\n            urlAnchor, // Request state (becomes false upon send and true upon completion)\n            completed, // To know if global events are to be dispatched\n            fireGlobals, // Loop variable\n            i, // uncached part of the url\n            uncached, // Create the final options object\n            s = jQuery.ajaxSetup({}, options), // Callbacks context\n            callbackContext = s.context || s, // Context for global events is callbackContext if it is a DOM node or jQuery collection\n            globalEventContext = s.context && (callbackContext.nodeType || callbackContext.jquery) ? jQuery(callbackContext) : jQuery.event, // Deferreds\n            deferred = jQuery.Deferred(), completeDeferred = jQuery.Callbacks(\"once memory\"), // Status-dependent callbacks\n            statusCode = s.statusCode || {}, // Headers (they are sent all at once)\n            requestHeaders = {}, requestHeadersNames = {}, // Default abort message\n            strAbort = \"canceled\", // Fake xhr\n            jqXHR = {\n                readyState: 0,\n                // Builds headers hashtable if needed\n                getResponseHeader: function(key) {\n                    var match;\n                    if (completed) {\n                        if (!responseHeaders) {\n                            responseHeaders = {};\n                            while(match = rheaders.exec(responseHeadersString))responseHeaders[match[1].toLowerCase() + \" \"] = (responseHeaders[match[1].toLowerCase() + \" \"] || []).concat(match[2]);\n                        }\n                        match = responseHeaders[key.toLowerCase() + \" \"];\n                    }\n                    return match == null ? null : match.join(\", \");\n                },\n                // Raw string\n                getAllResponseHeaders: function() {\n                    return completed ? responseHeadersString : null;\n                },\n                // Caches the header\n                setRequestHeader: function(name, value) {\n                    if (completed == null) {\n                        name = requestHeadersNames[name.toLowerCase()] = requestHeadersNames[name.toLowerCase()] || name;\n                        requestHeaders[name] = value;\n                    }\n                    return this;\n                },\n                // Overrides response content-type header\n                overrideMimeType: function(type) {\n                    if (completed == null) s.mimeType = type;\n                    return this;\n                },\n                // Status-dependent callbacks\n                statusCode: function(map) {\n                    var code;\n                    if (map) {\n                        if (completed) // Execute the appropriate callbacks\n                        jqXHR.always(map[jqXHR.status]);\n                        else // Lazy-add the new callbacks in a way that preserves old ones\n                        for(code in map)statusCode[code] = [\n                            statusCode[code],\n                            map[code]\n                        ];\n                    }\n                    return this;\n                },\n                // Cancel the request\n                abort: function(statusText) {\n                    var finalText = statusText || strAbort;\n                    if (transport) transport.abort(finalText);\n                    done(0, finalText);\n                    return this;\n                }\n            };\n            // Attach deferreds\n            deferred.promise(jqXHR);\n            // Add protocol if not provided (prefilters might expect it)\n            // Handle falsy url in the settings object (trac-10093: consistency with old signature)\n            // We also use the url parameter if available\n            s.url = ((url || s.url || location.href) + \"\").replace(rprotocol, location.protocol + \"//\");\n            // Alias method option to type as per ticket trac-12004\n            s.type = options.method || options.type || s.method || s.type;\n            // Extract dataTypes list\n            s.dataTypes = (s.dataType || \"*\").toLowerCase().match(rnothtmlwhite) || [\n                \"\"\n            ];\n            // A cross-domain request is in order when the origin doesn't match the current origin.\n            if (s.crossDomain == null) {\n                urlAnchor = document.createElement(\"a\");\n                // Support: IE <=8 - 11, Edge 12 - 15\n                // IE throws exception on accessing the href property if url is malformed,\n                // e.g. http://example.com:80x/\n                try {\n                    urlAnchor.href = s.url;\n                    // Support: IE <=8 - 11 only\n                    // Anchor's host property isn't correctly set when s.url is relative\n                    urlAnchor.href = urlAnchor.href;\n                    s.crossDomain = originAnchor.protocol + \"//\" + originAnchor.host !== urlAnchor.protocol + \"//\" + urlAnchor.host;\n                } catch (e) {\n                    // If there is an error parsing the URL, assume it is crossDomain,\n                    // it can be rejected by the transport if it is invalid\n                    s.crossDomain = true;\n                }\n            }\n            // Convert data if not already a string\n            if (s.data && s.processData && typeof s.data !== \"string\") s.data = jQuery.param(s.data, s.traditional);\n            // Apply prefilters\n            inspectPrefiltersOrTransports(prefilters, s, options, jqXHR);\n            // If request was aborted inside a prefilter, stop there\n            if (completed) return jqXHR;\n            // We can fire global events as of now if asked to\n            // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (trac-15118)\n            fireGlobals = jQuery.event && s.global;\n            // Watch for a new set of requests\n            if (fireGlobals && jQuery.active++ === 0) jQuery.event.trigger(\"ajaxStart\");\n            // Uppercase the type\n            s.type = s.type.toUpperCase();\n            // Determine if request has content\n            s.hasContent = !rnoContent.test(s.type);\n            // Save the URL in case we're toying with the If-Modified-Since\n            // and/or If-None-Match header later on\n            // Remove hash to simplify url manipulation\n            cacheURL = s.url.replace(rhash, \"\");\n            // More options handling for requests with no content\n            if (!s.hasContent) {\n                // Remember the hash so we can put it back\n                uncached = s.url.slice(cacheURL.length);\n                // If data is available and should be processed, append data to url\n                if (s.data && (s.processData || typeof s.data === \"string\")) {\n                    cacheURL += (rquery.test(cacheURL) ? \"&\" : \"?\") + s.data;\n                    // trac-9682: remove data so that it's not used in an eventual retry\n                    delete s.data;\n                }\n                // Add or update anti-cache param if needed\n                if (s.cache === false) {\n                    cacheURL = cacheURL.replace(rantiCache, \"$1\");\n                    uncached = (rquery.test(cacheURL) ? \"&\" : \"?\") + \"_=\" + nonce.guid++ + uncached;\n                }\n                // Put hash and anti-cache on the URL that will be requested (gh-1732)\n                s.url = cacheURL + uncached;\n            // Change '%20' to '+' if this is encoded form body content (gh-2658)\n            } else if (s.data && s.processData && (s.contentType || \"\").indexOf(\"application/x-www-form-urlencoded\") === 0) s.data = s.data.replace(r20, \"+\");\n            // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n            if (s.ifModified) {\n                if (jQuery.lastModified[cacheURL]) jqXHR.setRequestHeader(\"If-Modified-Since\", jQuery.lastModified[cacheURL]);\n                if (jQuery.etag[cacheURL]) jqXHR.setRequestHeader(\"If-None-Match\", jQuery.etag[cacheURL]);\n            }\n            // Set the correct header, if data is being sent\n            if (s.data && s.hasContent && s.contentType !== false || options.contentType) jqXHR.setRequestHeader(\"Content-Type\", s.contentType);\n            // Set the Accepts header for the server, depending on the dataType\n            jqXHR.setRequestHeader(\"Accept\", s.dataTypes[0] && s.accepts[s.dataTypes[0]] ? s.accepts[s.dataTypes[0]] + (s.dataTypes[0] !== \"*\" ? \", \" + allTypes + \"; q=0.01\" : \"\") : s.accepts[\"*\"]);\n            // Check for headers option\n            for(i in s.headers)jqXHR.setRequestHeader(i, s.headers[i]);\n            // Allow custom headers/mimetypes and early abort\n            if (s.beforeSend && (s.beforeSend.call(callbackContext, jqXHR, s) === false || completed)) // Abort if not done already and return\n            return jqXHR.abort();\n            // Aborting is no longer a cancellation\n            strAbort = \"abort\";\n            // Install callbacks on deferreds\n            completeDeferred.add(s.complete);\n            jqXHR.done(s.success);\n            jqXHR.fail(s.error);\n            // Get transport\n            transport = inspectPrefiltersOrTransports(transports, s, options, jqXHR);\n            // If no transport, we auto-abort\n            if (!transport) done(-1, \"No Transport\");\n            else {\n                jqXHR.readyState = 1;\n                // Send global event\n                if (fireGlobals) globalEventContext.trigger(\"ajaxSend\", [\n                    jqXHR,\n                    s\n                ]);\n                // If request was aborted inside ajaxSend, stop there\n                if (completed) return jqXHR;\n                // Timeout\n                if (s.async && s.timeout > 0) timeoutTimer = window1.setTimeout(function() {\n                    jqXHR.abort(\"timeout\");\n                }, s.timeout);\n                try {\n                    completed = false;\n                    transport.send(requestHeaders, done);\n                } catch (e) {\n                    // Rethrow post-completion exceptions\n                    if (completed) throw e;\n                    // Propagate others as results\n                    done(-1, e);\n                }\n            }\n            // Callback for when everything is done\n            function done(status, nativeStatusText, responses, headers) {\n                var isSuccess, success, error, response, modified, statusText = nativeStatusText;\n                // Ignore repeat invocations\n                if (completed) return;\n                completed = true;\n                // Clear timeout if it exists\n                if (timeoutTimer) window1.clearTimeout(timeoutTimer);\n                // Dereference transport for early garbage collection\n                // (no matter how long the jqXHR object will be used)\n                transport = undefined;\n                // Cache response headers\n                responseHeadersString = headers || \"\";\n                // Set readyState\n                jqXHR.readyState = status > 0 ? 4 : 0;\n                // Determine if successful\n                isSuccess = status >= 200 && status < 300 || status === 304;\n                // Get response data\n                if (responses) response = ajaxHandleResponses(s, jqXHR, responses);\n                // Use a noop converter for missing script but not if jsonp\n                if (!isSuccess && jQuery.inArray(\"script\", s.dataTypes) > -1 && jQuery.inArray(\"json\", s.dataTypes) < 0) s.converters[\"text script\"] = function() {};\n                // Convert no matter what (that way responseXXX fields are always set)\n                response = ajaxConvert(s, response, jqXHR, isSuccess);\n                // If successful, handle type chaining\n                if (isSuccess) {\n                    // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n                    if (s.ifModified) {\n                        modified = jqXHR.getResponseHeader(\"Last-Modified\");\n                        if (modified) jQuery.lastModified[cacheURL] = modified;\n                        modified = jqXHR.getResponseHeader(\"etag\");\n                        if (modified) jQuery.etag[cacheURL] = modified;\n                    }\n                    // if no content\n                    if (status === 204 || s.type === \"HEAD\") statusText = \"nocontent\";\n                    else if (status === 304) statusText = \"notmodified\";\n                    else {\n                        statusText = response.state;\n                        success = response.data;\n                        error = response.error;\n                        isSuccess = !error;\n                    }\n                } else {\n                    // Extract error from statusText and normalize for non-aborts\n                    error = statusText;\n                    if (status || !statusText) {\n                        statusText = \"error\";\n                        if (status < 0) status = 0;\n                    }\n                }\n                // Set data for the fake xhr object\n                jqXHR.status = status;\n                jqXHR.statusText = (nativeStatusText || statusText) + \"\";\n                // Success/Error\n                if (isSuccess) deferred.resolveWith(callbackContext, [\n                    success,\n                    statusText,\n                    jqXHR\n                ]);\n                else deferred.rejectWith(callbackContext, [\n                    jqXHR,\n                    statusText,\n                    error\n                ]);\n                // Status-dependent callbacks\n                jqXHR.statusCode(statusCode);\n                statusCode = undefined;\n                if (fireGlobals) globalEventContext.trigger(isSuccess ? \"ajaxSuccess\" : \"ajaxError\", [\n                    jqXHR,\n                    s,\n                    isSuccess ? success : error\n                ]);\n                // Complete\n                completeDeferred.fireWith(callbackContext, [\n                    jqXHR,\n                    statusText\n                ]);\n                if (fireGlobals) {\n                    globalEventContext.trigger(\"ajaxComplete\", [\n                        jqXHR,\n                        s\n                    ]);\n                    // Handle the global AJAX counter\n                    if (!--jQuery.active) jQuery.event.trigger(\"ajaxStop\");\n                }\n            }\n            return jqXHR;\n        },\n        getJSON: function(url, data, callback) {\n            return jQuery.get(url, data, callback, \"json\");\n        },\n        getScript: function(url, callback) {\n            return jQuery.get(url, undefined, callback, \"script\");\n        }\n    });\n    jQuery.each([\n        \"get\",\n        \"post\"\n    ], function(_i, method) {\n        jQuery[method] = function(url, data, callback, type) {\n            // Shift arguments if data argument was omitted\n            if (isFunction(data)) {\n                type = type || callback;\n                callback = data;\n                data = undefined;\n            }\n            // The url can be an options object (which then must have .url)\n            return jQuery.ajax(jQuery.extend({\n                url: url,\n                type: method,\n                dataType: type,\n                data: data,\n                success: callback\n            }, jQuery.isPlainObject(url) && url));\n        };\n    });\n    jQuery.ajaxPrefilter(function(s) {\n        var i;\n        for(i in s.headers)if (i.toLowerCase() === \"content-type\") s.contentType = s.headers[i] || \"\";\n    });\n    jQuery._evalUrl = function(url, options, doc) {\n        return jQuery.ajax({\n            url: url,\n            // Make this explicit, since user can override this through ajaxSetup (trac-11264)\n            type: \"GET\",\n            dataType: \"script\",\n            cache: true,\n            async: false,\n            global: false,\n            // Only evaluate the response if it is successful (gh-4126)\n            // dataFilter is not invoked for failure responses, so using it instead\n            // of the default converter is kludgy but it works.\n            converters: {\n                \"text script\": function() {}\n            },\n            dataFilter: function(response) {\n                jQuery.globalEval(response, options, doc);\n            }\n        });\n    };\n    jQuery.fn.extend({\n        wrapAll: function(html) {\n            var wrap;\n            if (this[0]) {\n                if (isFunction(html)) html = html.call(this[0]);\n                // The elements to wrap the target around\n                wrap = jQuery(html, this[0].ownerDocument).eq(0).clone(true);\n                if (this[0].parentNode) wrap.insertBefore(this[0]);\n                wrap.map(function() {\n                    var elem = this;\n                    while(elem.firstElementChild)elem = elem.firstElementChild;\n                    return elem;\n                }).append(this);\n            }\n            return this;\n        },\n        wrapInner: function(html) {\n            if (isFunction(html)) return this.each(function(i) {\n                jQuery(this).wrapInner(html.call(this, i));\n            });\n            return this.each(function() {\n                var self = jQuery(this), contents = self.contents();\n                if (contents.length) contents.wrapAll(html);\n                else self.append(html);\n            });\n        },\n        wrap: function(html) {\n            var htmlIsFunction = isFunction(html);\n            return this.each(function(i) {\n                jQuery(this).wrapAll(htmlIsFunction ? html.call(this, i) : html);\n            });\n        },\n        unwrap: function(selector) {\n            this.parent(selector).not(\"body\").each(function() {\n                jQuery(this).replaceWith(this.childNodes);\n            });\n            return this;\n        }\n    });\n    jQuery.expr.pseudos.hidden = function(elem) {\n        return !jQuery.expr.pseudos.visible(elem);\n    };\n    jQuery.expr.pseudos.visible = function(elem) {\n        return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);\n    };\n    jQuery.ajaxSettings.xhr = function() {\n        try {\n            return new window1.XMLHttpRequest();\n        } catch (e) {}\n    };\n    var xhrSuccessStatus = {\n        // File protocol always yields status code 0, assume 200\n        0: 200,\n        // Support: IE <=9 only\n        // trac-1450: sometimes IE returns 1223 when it should be 204\n        1223: 204\n    }, xhrSupported = jQuery.ajaxSettings.xhr();\n    support.cors = !!xhrSupported && \"withCredentials\" in xhrSupported;\n    support.ajax = xhrSupported = !!xhrSupported;\n    jQuery.ajaxTransport(function(options) {\n        var callback, errorCallback;\n        // Cross domain only allowed if supported through XMLHttpRequest\n        if (support.cors || xhrSupported && !options.crossDomain) return {\n            send: function(headers, complete) {\n                var i, xhr = options.xhr();\n                xhr.open(options.type, options.url, options.async, options.username, options.password);\n                // Apply custom fields if provided\n                if (options.xhrFields) for(i in options.xhrFields)xhr[i] = options.xhrFields[i];\n                // Override mime type if needed\n                if (options.mimeType && xhr.overrideMimeType) xhr.overrideMimeType(options.mimeType);\n                // X-Requested-With header\n                // For cross-domain requests, seeing as conditions for a preflight are\n                // akin to a jigsaw puzzle, we simply never set it to be sure.\n                // (it can always be set on a per-request basis or even using ajaxSetup)\n                // For same-domain requests, won't change header if already provided.\n                if (!options.crossDomain && !headers[\"X-Requested-With\"]) headers[\"X-Requested-With\"] = \"XMLHttpRequest\";\n                // Set headers\n                for(i in headers)xhr.setRequestHeader(i, headers[i]);\n                // Callback\n                callback = function(type) {\n                    return function() {\n                        if (callback) {\n                            callback = errorCallback = xhr.onload = xhr.onerror = xhr.onabort = xhr.ontimeout = xhr.onreadystatechange = null;\n                            if (type === \"abort\") xhr.abort();\n                            else if (type === \"error\") {\n                                // Support: IE <=9 only\n                                // On a manual native abort, IE9 throws\n                                // errors on any property access that is not readyState\n                                if (typeof xhr.status !== \"number\") complete(0, \"error\");\n                                else complete(// File: protocol always yields status 0; see trac-8605, trac-14207\n                                xhr.status, xhr.statusText);\n                            } else complete(xhrSuccessStatus[xhr.status] || xhr.status, xhr.statusText, // Support: IE <=9 only\n                            // IE9 has no XHR2 but throws on binary (trac-11426)\n                            // For XHR2 non-text, let the caller handle it (gh-2498)\n                            (xhr.responseType || \"text\") !== \"text\" || typeof xhr.responseText !== \"string\" ? {\n                                binary: xhr.response\n                            } : {\n                                text: xhr.responseText\n                            }, xhr.getAllResponseHeaders());\n                        }\n                    };\n                };\n                // Listen to events\n                xhr.onload = callback();\n                errorCallback = xhr.onerror = xhr.ontimeout = callback(\"error\");\n                // Support: IE 9 only\n                // Use onreadystatechange to replace onabort\n                // to handle uncaught aborts\n                if (xhr.onabort !== undefined) xhr.onabort = errorCallback;\n                else xhr.onreadystatechange = function() {\n                    // Check readyState before timeout as it changes\n                    if (xhr.readyState === 4) // Allow onerror to be called first,\n                    // but that will not handle a native abort\n                    // Also, save errorCallback to a variable\n                    // as xhr.onerror cannot be accessed\n                    window1.setTimeout(function() {\n                        if (callback) errorCallback();\n                    });\n                };\n                // Create the abort callback\n                callback = callback(\"abort\");\n                try {\n                    // Do send the request (this may raise an exception)\n                    xhr.send(options.hasContent && options.data || null);\n                } catch (e) {\n                    // trac-14683: Only rethrow if this hasn't been notified as an error yet\n                    if (callback) throw e;\n                }\n            },\n            abort: function() {\n                if (callback) callback();\n            }\n        };\n    });\n    // Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)\n    jQuery.ajaxPrefilter(function(s) {\n        if (s.crossDomain) s.contents.script = false;\n    });\n    // Install script dataType\n    jQuery.ajaxSetup({\n        accepts: {\n            script: \"text/javascript, application/javascript, application/ecmascript, application/x-ecmascript\"\n        },\n        contents: {\n            script: /\\b(?:java|ecma)script\\b/\n        },\n        converters: {\n            \"text script\": function(text) {\n                jQuery.globalEval(text);\n                return text;\n            }\n        }\n    });\n    // Handle cache's special case and crossDomain\n    jQuery.ajaxPrefilter(\"script\", function(s) {\n        if (s.cache === undefined) s.cache = false;\n        if (s.crossDomain) s.type = \"GET\";\n    });\n    // Bind script tag hack transport\n    jQuery.ajaxTransport(\"script\", function(s) {\n        // This transport only deals with cross domain or forced-by-attrs requests\n        if (s.crossDomain || s.scriptAttrs) {\n            var script, callback;\n            return {\n                send: function(_, complete) {\n                    script = jQuery(\"<script>\").attr(s.scriptAttrs || {}).prop({\n                        charset: s.scriptCharset,\n                        src: s.url\n                    }).on(\"load error\", callback = function(evt) {\n                        script.remove();\n                        callback = null;\n                        if (evt) complete(evt.type === \"error\" ? 404 : 200, evt.type);\n                    });\n                    // Use native DOM manipulation to avoid our domManip AJAX trickery\n                    document.head.appendChild(script[0]);\n                },\n                abort: function() {\n                    if (callback) callback();\n                }\n            };\n        }\n    });\n    var oldCallbacks = [], rjsonp = /(=)\\?(?=&|$)|\\?\\?/;\n    // Default jsonp settings\n    jQuery.ajaxSetup({\n        jsonp: \"callback\",\n        jsonpCallback: function() {\n            var callback = oldCallbacks.pop() || jQuery.expando + \"_\" + nonce.guid++;\n            this[callback] = true;\n            return callback;\n        }\n    });\n    // Detect, normalize options and install callbacks for jsonp requests\n    jQuery.ajaxPrefilter(\"json jsonp\", function(s, originalSettings, jqXHR) {\n        var callbackName, overwritten, responseContainer, jsonProp = s.jsonp !== false && (rjsonp.test(s.url) ? \"url\" : typeof s.data === \"string\" && (s.contentType || \"\").indexOf(\"application/x-www-form-urlencoded\") === 0 && rjsonp.test(s.data) && \"data\");\n        // Handle iff the expected data type is \"jsonp\" or we have a parameter to set\n        if (jsonProp || s.dataTypes[0] === \"jsonp\") {\n            // Get callback name, remembering preexisting value associated with it\n            callbackName = s.jsonpCallback = isFunction(s.jsonpCallback) ? s.jsonpCallback() : s.jsonpCallback;\n            // Insert callback into url or form data\n            if (jsonProp) s[jsonProp] = s[jsonProp].replace(rjsonp, \"$1\" + callbackName);\n            else if (s.jsonp !== false) s.url += (rquery.test(s.url) ? \"&\" : \"?\") + s.jsonp + \"=\" + callbackName;\n            // Use data converter to retrieve json after script execution\n            s.converters[\"script json\"] = function() {\n                if (!responseContainer) jQuery.error(callbackName + \" was not called\");\n                return responseContainer[0];\n            };\n            // Force json dataType\n            s.dataTypes[0] = \"json\";\n            // Install callback\n            overwritten = window1[callbackName];\n            window1[callbackName] = function() {\n                responseContainer = arguments;\n            };\n            // Clean-up function (fires after converters)\n            jqXHR.always(function() {\n                // If previous value didn't exist - remove it\n                if (overwritten === undefined) jQuery(window1).removeProp(callbackName);\n                else window1[callbackName] = overwritten;\n                // Save back as free\n                if (s[callbackName]) {\n                    // Make sure that re-using the options doesn't screw things around\n                    s.jsonpCallback = originalSettings.jsonpCallback;\n                    // Save the callback name for future use\n                    oldCallbacks.push(callbackName);\n                }\n                // Call if it was a function and we have a response\n                if (responseContainer && isFunction(overwritten)) overwritten(responseContainer[0]);\n                responseContainer = overwritten = undefined;\n            });\n            // Delegate to script\n            return \"script\";\n        }\n    });\n    // Support: Safari 8 only\n    // In Safari 8 documents created via document.implementation.createHTMLDocument\n    // collapse sibling forms: the second one becomes a child of the first one.\n    // Because of that, this security measure has to be disabled in Safari 8.\n    // https://bugs.webkit.org/show_bug.cgi?id=137337\n    support.createHTMLDocument = function() {\n        var body = document.implementation.createHTMLDocument(\"\").body;\n        body.innerHTML = \"<form></form><form></form>\";\n        return body.childNodes.length === 2;\n    }();\n    // Argument \"data\" should be string of html\n    // context (optional): If specified, the fragment will be created in this context,\n    // defaults to document\n    // keepScripts (optional): If true, will include scripts passed in the html string\n    jQuery.parseHTML = function(data, context, keepScripts) {\n        if (typeof data !== \"string\") return [];\n        if (typeof context === \"boolean\") {\n            keepScripts = context;\n            context = false;\n        }\n        var base, parsed, scripts;\n        if (!context) {\n            // Stop scripts or inline event handlers from being executed immediately\n            // by using document.implementation\n            if (support.createHTMLDocument) {\n                context = document.implementation.createHTMLDocument(\"\");\n                // Set the base href for the created document\n                // so any parsed elements with URLs\n                // are based on the document's URL (gh-2965)\n                base = context.createElement(\"base\");\n                base.href = document.location.href;\n                context.head.appendChild(base);\n            } else context = document;\n        }\n        parsed = rsingleTag.exec(data);\n        scripts = !keepScripts && [];\n        // Single tag\n        if (parsed) return [\n            context.createElement(parsed[1])\n        ];\n        parsed = buildFragment([\n            data\n        ], context, scripts);\n        if (scripts && scripts.length) jQuery(scripts).remove();\n        return jQuery.merge([], parsed.childNodes);\n    };\n    /**\n * Load a url into a page\n */ jQuery.fn.load = function(url, params, callback) {\n        var selector, type, response, self = this, off = url.indexOf(\" \");\n        if (off > -1) {\n            selector = stripAndCollapse(url.slice(off));\n            url = url.slice(0, off);\n        }\n        // If it's a function\n        if (isFunction(params)) {\n            // We assume that it's the callback\n            callback = params;\n            params = undefined;\n        // Otherwise, build a param string\n        } else if (params && typeof params === \"object\") type = \"POST\";\n        // If we have elements to modify, make the request\n        if (self.length > 0) jQuery.ajax({\n            url: url,\n            // If \"type\" variable is undefined, then \"GET\" method will be used.\n            // Make value of this field explicit since\n            // user can override it through ajaxSetup method\n            type: type || \"GET\",\n            dataType: \"html\",\n            data: params\n        }).done(function(responseText) {\n            // Save response for use in complete callback\n            response = arguments;\n            self.html(selector ? // If a selector was specified, locate the right elements in a dummy div\n            // Exclude scripts to avoid IE 'Permission Denied' errors\n            jQuery(\"<div>\").append(jQuery.parseHTML(responseText)).find(selector) : // Otherwise use the full result\n            responseText);\n        // If the request succeeds, this function gets \"data\", \"status\", \"jqXHR\"\n        // but they are ignored because response was set above.\n        // If it fails, this function gets \"jqXHR\", \"status\", \"error\"\n        }).always(callback && function(jqXHR, status) {\n            self.each(function() {\n                callback.apply(this, response || [\n                    jqXHR.responseText,\n                    status,\n                    jqXHR\n                ]);\n            });\n        });\n        return this;\n    };\n    jQuery.expr.pseudos.animated = function(elem) {\n        return jQuery.grep(jQuery.timers, function(fn) {\n            return elem === fn.elem;\n        }).length;\n    };\n    jQuery.offset = {\n        setOffset: function(elem, options, i) {\n            var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition, position = jQuery.css(elem, \"position\"), curElem = jQuery(elem), props = {};\n            // Set position first, in-case top/left are set even on static elem\n            if (position === \"static\") elem.style.position = \"relative\";\n            curOffset = curElem.offset();\n            curCSSTop = jQuery.css(elem, \"top\");\n            curCSSLeft = jQuery.css(elem, \"left\");\n            calculatePosition = (position === \"absolute\" || position === \"fixed\") && (curCSSTop + curCSSLeft).indexOf(\"auto\") > -1;\n            // Need to be able to calculate position if either\n            // top or left is auto and position is either absolute or fixed\n            if (calculatePosition) {\n                curPosition = curElem.position();\n                curTop = curPosition.top;\n                curLeft = curPosition.left;\n            } else {\n                curTop = parseFloat(curCSSTop) || 0;\n                curLeft = parseFloat(curCSSLeft) || 0;\n            }\n            if (isFunction(options)) // Use jQuery.extend here to allow modification of coordinates argument (gh-1848)\n            options = options.call(elem, i, jQuery.extend({}, curOffset));\n            if (options.top != null) props.top = options.top - curOffset.top + curTop;\n            if (options.left != null) props.left = options.left - curOffset.left + curLeft;\n            if (\"using\" in options) options.using.call(elem, props);\n            else curElem.css(props);\n        }\n    };\n    jQuery.fn.extend({\n        // offset() relates an element's border box to the document origin\n        offset: function(options) {\n            // Preserve chaining for setter\n            if (arguments.length) return options === undefined ? this : this.each(function(i) {\n                jQuery.offset.setOffset(this, options, i);\n            });\n            var rect, win, elem = this[0];\n            if (!elem) return;\n            // Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n            // Support: IE <=11 only\n            // Running getBoundingClientRect on a\n            // disconnected node in IE throws an error\n            if (!elem.getClientRects().length) return {\n                top: 0,\n                left: 0\n            };\n            // Get document-relative position by adding viewport scroll to viewport-relative gBCR\n            rect = elem.getBoundingClientRect();\n            win = elem.ownerDocument.defaultView;\n            return {\n                top: rect.top + win.pageYOffset,\n                left: rect.left + win.pageXOffset\n            };\n        },\n        // position() relates an element's margin box to its offset parent's padding box\n        // This corresponds to the behavior of CSS absolute positioning\n        position: function() {\n            if (!this[0]) return;\n            var offsetParent, offset, doc, elem = this[0], parentOffset = {\n                top: 0,\n                left: 0\n            };\n            // position:fixed elements are offset from the viewport, which itself always has zero offset\n            if (jQuery.css(elem, \"position\") === \"fixed\") // Assume position:fixed implies availability of getBoundingClientRect\n            offset = elem.getBoundingClientRect();\n            else {\n                offset = this.offset();\n                // Account for the *real* offset parent, which can be the document or its root element\n                // when a statically positioned element is identified\n                doc = elem.ownerDocument;\n                offsetParent = elem.offsetParent || doc.documentElement;\n                while(offsetParent && (offsetParent === doc.body || offsetParent === doc.documentElement) && jQuery.css(offsetParent, \"position\") === \"static\")offsetParent = offsetParent.parentNode;\n                if (offsetParent && offsetParent !== elem && offsetParent.nodeType === 1) {\n                    // Incorporate borders into its offset, since they are outside its content origin\n                    parentOffset = jQuery(offsetParent).offset();\n                    parentOffset.top += jQuery.css(offsetParent, \"borderTopWidth\", true);\n                    parentOffset.left += jQuery.css(offsetParent, \"borderLeftWidth\", true);\n                }\n            }\n            // Subtract parent offsets and element margins\n            return {\n                top: offset.top - parentOffset.top - jQuery.css(elem, \"marginTop\", true),\n                left: offset.left - parentOffset.left - jQuery.css(elem, \"marginLeft\", true)\n            };\n        },\n        // This method will return documentElement in the following cases:\n        // 1) For the element inside the iframe without offsetParent, this method will return\n        //    documentElement of the parent window\n        // 2) For the hidden or detached element\n        // 3) For body or html element, i.e. in case of the html node - it will return itself\n        //\n        // but those exceptions were never presented as a real life use-cases\n        // and might be considered as more preferable results.\n        //\n        // This logic, however, is not guaranteed and can change at any point in the future\n        offsetParent: function() {\n            return this.map(function() {\n                var offsetParent = this.offsetParent;\n                while(offsetParent && jQuery.css(offsetParent, \"position\") === \"static\")offsetParent = offsetParent.offsetParent;\n                return offsetParent || documentElement;\n            });\n        }\n    });\n    // Create scrollLeft and scrollTop methods\n    jQuery.each({\n        scrollLeft: \"pageXOffset\",\n        scrollTop: \"pageYOffset\"\n    }, function(method, prop) {\n        var top = \"pageYOffset\" === prop;\n        jQuery.fn[method] = function(val) {\n            return access(this, function(elem, method, val) {\n                // Coalesce documents and windows\n                var win;\n                if (isWindow(elem)) win = elem;\n                else if (elem.nodeType === 9) win = elem.defaultView;\n                if (val === undefined) return win ? win[prop] : elem[method];\n                if (win) win.scrollTo(!top ? val : win.pageXOffset, top ? val : win.pageYOffset);\n                else elem[method] = val;\n            }, method, val, arguments.length);\n        };\n    });\n    // Support: Safari <=7 - 9.1, Chrome <=37 - 49\n    // Add the top/left cssHooks using jQuery.fn.position\n    // Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084\n    // Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347\n    // getComputedStyle returns percent when specified for top/left/bottom/right;\n    // rather than make the css module depend on the offset module, just check for it here\n    jQuery.each([\n        \"top\",\n        \"left\"\n    ], function(_i, prop) {\n        jQuery.cssHooks[prop] = addGetHookIf(support.pixelPosition, function(elem, computed) {\n            if (computed) {\n                computed = curCSS(elem, prop);\n                // If curCSS returns percentage, fallback to offset\n                return rnumnonpx.test(computed) ? jQuery(elem).position()[prop] + \"px\" : computed;\n            }\n        });\n    });\n    // Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods\n    jQuery.each({\n        Height: \"height\",\n        Width: \"width\"\n    }, function(name, type) {\n        jQuery.each({\n            padding: \"inner\" + name,\n            content: type,\n            \"\": \"outer\" + name\n        }, function(defaultExtra, funcName) {\n            // Margin is only for outerHeight, outerWidth\n            jQuery.fn[funcName] = function(margin, value) {\n                var chainable = arguments.length && (defaultExtra || typeof margin !== \"boolean\"), extra = defaultExtra || (margin === true || value === true ? \"margin\" : \"border\");\n                return access(this, function(elem, type, value) {\n                    var doc;\n                    if (isWindow(elem)) // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)\n                    return funcName.indexOf(\"outer\") === 0 ? elem[\"inner\" + name] : elem.document.documentElement[\"client\" + name];\n                    // Get document width or height\n                    if (elem.nodeType === 9) {\n                        doc = elem.documentElement;\n                        // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],\n                        // whichever is greatest\n                        return Math.max(elem.body[\"scroll\" + name], doc[\"scroll\" + name], elem.body[\"offset\" + name], doc[\"offset\" + name], doc[\"client\" + name]);\n                    }\n                    return value === undefined ? // Get width or height on the element, requesting but not forcing parseFloat\n                    jQuery.css(elem, type, extra) : // Set width or height on the element\n                    jQuery.style(elem, type, value, extra);\n                }, type, chainable ? margin : undefined, chainable);\n            };\n        });\n    });\n    jQuery.each([\n        \"ajaxStart\",\n        \"ajaxStop\",\n        \"ajaxComplete\",\n        \"ajaxError\",\n        \"ajaxSuccess\",\n        \"ajaxSend\"\n    ], function(_i, type) {\n        jQuery.fn[type] = function(fn) {\n            return this.on(type, fn);\n        };\n    });\n    jQuery.fn.extend({\n        bind: function(types, data, fn) {\n            return this.on(types, null, data, fn);\n        },\n        unbind: function(types, fn) {\n            return this.off(types, null, fn);\n        },\n        delegate: function(selector, types, data, fn) {\n            return this.on(types, selector, data, fn);\n        },\n        undelegate: function(selector, types, fn) {\n            // ( namespace ) or ( selector, types [, fn] )\n            return arguments.length === 1 ? this.off(selector, \"**\") : this.off(types, selector || \"**\", fn);\n        },\n        hover: function(fnOver, fnOut) {\n            return this.on(\"mouseenter\", fnOver).on(\"mouseleave\", fnOut || fnOver);\n        }\n    });\n    jQuery.each(\"blur focus focusin focusout resize scroll click dblclick mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave change select submit keydown keypress keyup contextmenu\".split(\" \"), function(_i, name) {\n        // Handle event binding\n        jQuery.fn[name] = function(data, fn) {\n            return arguments.length > 0 ? this.on(name, null, data, fn) : this.trigger(name);\n        };\n    });\n    // Support: Android <=4.0 only\n    // Make sure we trim BOM and NBSP\n    // Require that the \"whitespace run\" starts from a non-whitespace\n    // to avoid O(N^2) behavior when the engine would try matching \"\\s+$\" at each space position.\n    var rtrim = /^[\\s\\uFEFF\\xA0]+|([^\\s\\uFEFF\\xA0])[\\s\\uFEFF\\xA0]+$/g;\n    // Bind a function to a context, optionally partially applying any\n    // arguments.\n    // jQuery.proxy is deprecated to promote standards (specifically Function#bind)\n    // However, it is not slated for removal any time soon\n    jQuery.proxy = function(fn, context) {\n        var tmp, args, proxy;\n        if (typeof context === \"string\") {\n            tmp = fn[context];\n            context = fn;\n            fn = tmp;\n        }\n        // Quick check to determine if target is callable, in the spec\n        // this throws a TypeError, but we will just return undefined.\n        if (!isFunction(fn)) return undefined;\n        // Simulated bind\n        args = slice.call(arguments, 2);\n        proxy = function() {\n            return fn.apply(context || this, args.concat(slice.call(arguments)));\n        };\n        // Set the guid of unique handler to the same of original handler, so it can be removed\n        proxy.guid = fn.guid = fn.guid || jQuery.guid++;\n        return proxy;\n    };\n    jQuery.holdReady = function(hold) {\n        if (hold) jQuery.readyWait++;\n        else jQuery.ready(true);\n    };\n    jQuery.isArray = Array.isArray;\n    jQuery.parseJSON = JSON.parse;\n    jQuery.nodeName = nodeName;\n    jQuery.isFunction = isFunction;\n    jQuery.isWindow = isWindow;\n    jQuery.camelCase = camelCase;\n    jQuery.type = toType;\n    jQuery.now = Date.now;\n    jQuery.isNumeric = function(obj) {\n        // As of jQuery 3.0, isNumeric is limited to\n        // strings and numbers (primitives or objects)\n        // that can be coerced to finite numbers (gh-2662)\n        var type = jQuery.type(obj);\n        return (type === \"number\" || type === \"string\") && // parseFloat NaNs numeric-cast false positives (\"\")\n        // ...but misinterprets leading-number strings, particularly hex literals (\"0x...\")\n        // subtraction forces infinities to NaN\n        !isNaN(obj - parseFloat(obj));\n    };\n    jQuery.trim = function(text) {\n        return text == null ? \"\" : (text + \"\").replace(rtrim, \"$1\");\n    };\n    // Register as a named AMD module, since jQuery can be concatenated with other\n    // files that may use define, but not via a proper concatenation script that\n    // understands anonymous AMD modules. A named AMD is safest and most robust\n    // way to register. Lowercase jquery is used because AMD module names are\n    // derived from file names, and jQuery is normally delivered in a lowercase\n    // file name. Do this after creating the global so that if an AMD module wants\n    // to call noConflict to hide this version of jQuery, it will work.\n    // Note that for maximum portability, libraries that are not jQuery should\n    // declare themselves as anonymous modules, and avoid setting a global if an\n    // AMD loader is present. jQuery is a special case. For more information, see\n    // https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon\n    if (typeof define === \"function\" && define.amd) define(\"jquery\", [], function() {\n        return jQuery;\n    });\n    var // Map over jQuery in case of overwrite\n    _jQuery = window1.jQuery, // Map over the $ in case of overwrite\n    _$ = window1.$;\n    jQuery.noConflict = function(deep) {\n        if (window1.$ === jQuery) window1.$ = _$;\n        if (deep && window1.jQuery === jQuery) window1.jQuery = _jQuery;\n        return jQuery;\n    };\n    // Expose jQuery and $ identifiers, even in AMD\n    // (trac-7102#comment:10, https://github.com/jquery/jquery/pull/557)\n    // and CommonJS for browser emulators (trac-13566)\n    if (typeof noGlobal === \"undefined\") window1.jQuery = window1.$ = jQuery;\n    return jQuery;\n});\n\n\n\nvar $9fvPZ = parcelRequire(\"9fvPZ\");\n\n/**\n * {@link Session} state.\n *\n * @remarks\n * The {@link Session} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   ___________________________________________________________\n *                  |  ____________________________________________             |\n *                  | |            ____________________________    |            |\n * Session          | |           |                            v   v            v\n * Constructed -> Initial -> Establishing -> Established -> Terminating -> Terminated\n *                                |               |___________________________^   ^\n *                                |_______________________________________________|\n * ```\n * @public\n */ var $13c8043412d0bf9c$export$84bf1aca7aacb716;\n(function(SessionState) {\n    /**\n     * If `Inviter`, INVITE not sent yet.\n     * If `Invitation`, received INVITE (but no final response sent yet).\n     */ SessionState[\"Initial\"] = \"Initial\";\n    /**\n     * If `Inviter`, sent INVITE and waiting for a final response.\n     * If `Invitation`, received INVITE and attempting to send 200 final response (but has not sent it yet).\n     */ SessionState[\"Establishing\"] = \"Establishing\";\n    /**\n     * If `Inviter`, sent INVITE and received 200 final response and sent ACK.\n     * If `Invitation`, received INVITE and sent 200 final response.\n     */ SessionState[\"Established\"] = \"Established\";\n    /**\n     * If `Inviter`, sent INVITE, sent CANCEL and now waiting for 487 final response to ACK (or 200 to ACK & BYE).\n     * If `Invitation`, received INVITE, sent 200 final response and now waiting on ACK and upon receipt will attempt BYE\n     * (as the protocol specification requires, before sending a BYE we must receive the ACK - so we are waiting).\n     */ SessionState[\"Terminating\"] = \"Terminating\";\n    /**\n     * If `Inviter`, sent INVITE and received non-200 final response (or sent/received BYE after receiving 200).\n     * If `Invitation`, received INVITE and sent non-200 final response (or sent/received BYE after sending 200).\n     */ SessionState[\"Terminated\"] = \"Terminated\";\n})($13c8043412d0bf9c$export$84bf1aca7aacb716 = $13c8043412d0bf9c$export$84bf1aca7aacb716 || ($13c8043412d0bf9c$export$84bf1aca7aacb716 = {}));\n\n\n/**\n * Log levels.\n * @public\n */ var $bb2da993b0fb58b9$export$7dc82a261720bb19;\n(function(Levels) {\n    Levels[Levels[\"error\"] = 0] = \"error\";\n    Levels[Levels[\"warn\"] = 1] = \"warn\";\n    Levels[Levels[\"log\"] = 2] = \"log\";\n    Levels[Levels[\"debug\"] = 3] = \"debug\";\n})($bb2da993b0fb58b9$export$7dc82a261720bb19 = $bb2da993b0fb58b9$export$7dc82a261720bb19 || ($bb2da993b0fb58b9$export$7dc82a261720bb19 = {}));\n\n\nvar $71514f66503c648c$exports = {};\nvar $afd7e7a9fe59c60f$exports = {};\n/**\n * SessionDescriptionHandlerModifer functions for web browsers.\n * @packageDocumentation\n */ var $864193eb0123b61a$exports = {};\n\n$parcel$export($864193eb0123b61a$exports, \"stripTcpCandidates\", () => $864193eb0123b61a$export$ebbe22f70d5ea4d4);\n$parcel$export($864193eb0123b61a$exports, \"stripTelephoneEvent\", () => $864193eb0123b61a$export$a1a26d1d338da5f7);\n$parcel$export($864193eb0123b61a$exports, \"cleanJitsiSdpImageattr\", () => $864193eb0123b61a$export$d098684501cab718);\n$parcel$export($864193eb0123b61a$exports, \"stripG722\", () => $864193eb0123b61a$export$d6c901af15ec0d83);\n$parcel$export($864193eb0123b61a$exports, \"stripRtpPayload\", () => $864193eb0123b61a$export$19eb739e3f606d2d);\n$parcel$export($864193eb0123b61a$exports, \"stripVideo\", () => $864193eb0123b61a$export$256854e96123f02b);\n$parcel$export($864193eb0123b61a$exports, \"addMidLines\", () => $864193eb0123b61a$export$9b507344359c196b);\n$parcel$export($864193eb0123b61a$exports, \"holdModifier\", () => $864193eb0123b61a$export$962a66d9233196f6);\nconst $864193eb0123b61a$var$stripPayload = (sdp, payload)=>{\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const mediaDescs = [];\n    const lines = sdp.split(/\\r\\n/);\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    let currentMediaDesc;\n    for(let i = 0; i < lines.length;){\n        const line = lines[i];\n        if (/^m=(?:audio|video)/.test(line)) {\n            currentMediaDesc = {\n                index: i,\n                stripped: []\n            };\n            mediaDescs.push(currentMediaDesc);\n        } else if (currentMediaDesc) {\n            const rtpmap = /^a=rtpmap:(\\d+) ([^/]+)\\//.exec(line);\n            if (rtpmap && payload === rtpmap[2]) {\n                lines.splice(i, 1);\n                currentMediaDesc.stripped.push(rtpmap[1]);\n                continue; // Don't increment 'i'\n            }\n        }\n        i++;\n    }\n    for (const mediaDesc of mediaDescs){\n        const mline = lines[mediaDesc.index].split(\" \");\n        // Ignore the first 3 parameters of the mline. The codec information is after that\n        for(let j = 3; j < mline.length;){\n            if (mediaDesc.stripped.indexOf(mline[j]) !== -1) {\n                mline.splice(j, 1);\n                continue;\n            }\n            j++;\n        }\n        lines[mediaDesc.index] = mline.join(\" \");\n    }\n    return lines.join(\"\\r\\n\");\n};\nconst $864193eb0123b61a$var$stripMediaDescription = (sdp, description)=>{\n    const descriptionRegExp = new RegExp(\"m=\" + description + \".*$\", \"gm\");\n    const groupRegExp = new RegExp(\"^a=group:.*$\", \"gm\");\n    if (descriptionRegExp.test(sdp)) {\n        let midLineToRemove;\n        sdp = sdp.split(/^m=/gm).filter((section)=>{\n            if (section.substr(0, description.length) === description) {\n                midLineToRemove = section.match(/^a=mid:.*$/gm);\n                if (midLineToRemove) {\n                    const step = midLineToRemove[0].match(/:.+$/g);\n                    if (step) midLineToRemove = step[0].substr(1);\n                }\n                return false;\n            }\n            return true;\n        }).join(\"m=\");\n        const groupLine = sdp.match(groupRegExp);\n        if (groupLine && groupLine.length === 1) {\n            let groupLinePortion = groupLine[0];\n            // eslint-disable-next-line no-useless-escape\n            const groupRegExpReplace = new RegExp(\" *\" + midLineToRemove + \"[^ ]*\", \"g\");\n            groupLinePortion = groupLinePortion.replace(groupRegExpReplace, \"\");\n            sdp = sdp.split(groupRegExp).join(groupLinePortion);\n        }\n    }\n    return sdp;\n};\nfunction $864193eb0123b61a$export$ebbe22f70d5ea4d4(description) {\n    description.sdp = (description.sdp || \"\").replace(/^a=candidate:\\d+ \\d+ tcp .*?\\r\\n/img, \"\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$a1a26d1d338da5f7(description) {\n    description.sdp = $864193eb0123b61a$var$stripPayload(description.sdp || \"\", \"telephone-event\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$d098684501cab718(description) {\n    description.sdp = (description.sdp || \"\").replace(/^(a=imageattr:.*?)(x|y)=\\[0-/gm, \"$1$2=[1:\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$d6c901af15ec0d83(description) {\n    description.sdp = $864193eb0123b61a$var$stripPayload(description.sdp || \"\", \"G722\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$19eb739e3f606d2d(payload) {\n    return (description)=>{\n        description.sdp = $864193eb0123b61a$var$stripPayload(description.sdp || \"\", payload);\n        return Promise.resolve(description);\n    };\n}\nfunction $864193eb0123b61a$export$256854e96123f02b(description) {\n    description.sdp = $864193eb0123b61a$var$stripMediaDescription(description.sdp || \"\", \"video\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$9b507344359c196b(description) {\n    let sdp = description.sdp || \"\";\n    if (sdp.search(/^a=mid.*$/gm) === -1) {\n        const mlines = sdp.match(/^m=.*$/gm);\n        const sdpArray = sdp.split(/^m=.*$/gm);\n        if (mlines) mlines.forEach((elem, idx)=>{\n            mlines[idx] = elem + \"\\na=mid:\" + idx;\n        });\n        sdpArray.forEach((elem, idx)=>{\n            if (mlines && mlines[idx]) sdpArray[idx] = elem + mlines[idx];\n        });\n        sdp = sdpArray.join(\"\");\n        description.sdp = sdp;\n    }\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$962a66d9233196f6(description) {\n    if (!description.sdp || !description.type) throw new Error(\"Invalid SDP\");\n    let sdp = description.sdp;\n    const type = description.type;\n    if (sdp) {\n        if (!/a=(sendrecv|sendonly|recvonly|inactive)/.test(sdp)) sdp = sdp.replace(/(m=[^\\r]*\\r\\n)/g, \"$1a=sendonly\\r\\n\");\n        else {\n            sdp = sdp.replace(/a=sendrecv\\r\\n/g, \"a=sendonly\\r\\n\");\n            sdp = sdp.replace(/a=recvonly\\r\\n/g, \"a=inactive\\r\\n\");\n        }\n    }\n    return Promise.resolve({\n        sdp: sdp,\n        type: type\n    });\n}\n\n\n$parcel$exportWildcard($afd7e7a9fe59c60f$exports, $864193eb0123b61a$exports);\n\n\nvar $b6727c6f0668df8e$exports = {};\n/**\n * A SessionDescriptionHandler for web browsers.\n * @packageDocumentation\n */ var $f1bd11e6eecfe5be$exports = {};\n\n$parcel$export($f1bd11e6eecfe5be$exports, \"defaultMediaStreamFactory\", () => $f1bd11e6eecfe5be$export$1ffd34e85fb79026);\n/**\n * Function which returns a MediaStreamFactory.\n * @public\n */ function $f1bd11e6eecfe5be$export$1ffd34e85fb79026() {\n    return (constraints)=>{\n        // if no audio or video, return a media stream without tracks\n        if (!constraints.audio && !constraints.video) return Promise.resolve(new MediaStream());\n        // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n        // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n        // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n        // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n        if (navigator.mediaDevices === undefined) return Promise.reject(new Error(\"Media devices not available in insecure contexts.\"));\n        return navigator.mediaDevices.getUserMedia.call(navigator.mediaDevices, constraints);\n    };\n}\n\n\nvar $a53eddbe3defb51a$exports = {};\n\n\nvar $48c43aaa2d64dacd$exports = {};\n\n$parcel$export($48c43aaa2d64dacd$exports, \"defaultPeerConnectionConfiguration\", () => $48c43aaa2d64dacd$export$4ffaee600e913aea);\n/**\n * Function which returns an RTCConfiguration.\n * @public\n */ function $48c43aaa2d64dacd$export$4ffaee600e913aea() {\n    const configuration = {\n        bundlePolicy: \"balanced\",\n        certificates: undefined,\n        iceCandidatePoolSize: 0,\n        iceServers: [\n            {\n                urls: \"stun:stun.l.google.com:19302\"\n            }\n        ],\n        iceTransportPolicy: \"all\",\n        rtcpMuxPolicy: \"require\"\n    };\n    return configuration;\n}\n\n\nvar $a76119fc66d0a494$exports = {};\n\n\nvar $8f7ddb74cb4364bb$exports = {};\n\n\nvar $1fb45aa3bdfbf189$exports = {};\n\n$parcel$export($1fb45aa3bdfbf189$exports, \"defaultSessionDescriptionHandlerFactory\", () => $1fb45aa3bdfbf189$export$882edbaac6eb455);\n\n\nvar $744f32b2d87f082d$exports = {};\n\n$parcel$export($744f32b2d87f082d$exports, \"SessionDescriptionHandler\", () => $744f32b2d87f082d$export$4d703fa87dd9817a);\n/**\n * A base class implementing a WebRTC session description handler for sip.js.\n * @remarks\n * It is expected/intended to be extended by specific WebRTC based applications.\n * @privateRemarks\n * So do not put application specific implementation in here.\n * @public\n */ class $744f32b2d87f082d$export$4d703fa87dd9817a {\n    /**\n     * Constructor\n     * @param logger - A logger\n     * @param mediaStreamFactory - A factory to provide a MediaStream\n     * @param options - Options passed from the SessionDescriptionHandleFactory\n     */ constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration){\n        logger.debug(\"SessionDescriptionHandler.constructor\");\n        this.logger = logger;\n        this.mediaStreamFactory = mediaStreamFactory;\n        this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n        this._localMediaStream = new MediaStream();\n        this._remoteMediaStream = new MediaStream();\n        this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration === null || sessionDescriptionHandlerConfiguration === void 0 ? void 0 : sessionDescriptionHandlerConfiguration.peerConnectionConfiguration);\n        this.initPeerConnectionEventHandlers();\n    }\n    /**\n     * The local media stream currently being sent.\n     *\n     * @remarks\n     * The local media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * local media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */ get localMediaStream() {\n        return this._localMediaStream;\n    }\n    /**\n     * The remote media stream currently being received.\n     *\n     * @remarks\n     * The remote media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * remote media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */ get remoteMediaStream() {\n        return this._remoteMediaStream;\n    }\n    /**\n     * The data channel. Undefined before it is created.\n     */ get dataChannel() {\n        return this._dataChannel;\n    }\n    /**\n     * The peer connection. Undefined if peer connection has closed.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```ts\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * While access to the underlying `RTCPeerConnection` is provided, note that\n     * using methods which modify it may break the operation of this class.\n     * In particular, this class depends on exclusive access to the\n     * event handler properties. If you need access to the peer connection\n     * events, either register for events using `addEventListener()` on\n     * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n     * this `SessionDescriptionHandler`.\n     */ get peerConnection() {\n        return this._peerConnection;\n    }\n    /**\n     * A delegate which provides access to the peer connection event handlers.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * Setting the peer connection event handlers directly is not supported\n     * and may break this class. As this class depends on exclusive access\n     * to them. This delegate is intended to provide access to the\n     * RTCPeerConnection events in a fashion which is supported.\n     */ get peerConnectionDelegate() {\n        return this._peerConnectionDelegate;\n    }\n    set peerConnectionDelegate(delegate) {\n        this._peerConnectionDelegate = delegate;\n    }\n    // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n    static dispatchAddTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"addtrack\", {\n            track: track\n        }));\n    }\n    // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n    static dispatchRemoveTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"removetrack\", {\n            track: track\n        }));\n    }\n    /**\n     * Stop tracks and close peer connection.\n     */ close() {\n        this.logger.debug(\"SessionDescriptionHandler.close\");\n        if (this._peerConnection === undefined) return;\n        this._peerConnection.getReceivers().forEach((receiver)=>{\n            receiver.track && receiver.track.stop();\n        });\n        this._peerConnection.getSenders().forEach((sender)=>{\n            sender.track && sender.track.stop();\n        });\n        if (this._dataChannel) this._dataChannel.close();\n        this._peerConnection.close();\n        this._peerConnection = undefined;\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */ enableReceiverTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) throw new Error(\"Peer connection closed.\");\n        peerConnection.getReceivers().forEach((receiver)=>{\n            if (receiver.track) receiver.track.enabled = enable;\n        });\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */ enableSenderTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) throw new Error(\"Peer connection closed.\");\n        peerConnection.getSenders().forEach((sender)=>{\n            if (sender.track) sender.track.enabled = enable;\n        });\n    }\n    /**\n     * Creates an offer or answer.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */ getDescription(options, modifiers) {\n        var _a, _b;\n        this.logger.debug(\"SessionDescriptionHandler.getDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // ICE will restart upon applying an offer created with the iceRestart option\n        const iceRestart = (_a = options === null || options === void 0 ? void 0 : options.offerOptions) === null || _a === void 0 ? void 0 : _a.iceRestart;\n        // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n        const iceTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) === undefined ? (_b = this.sessionDescriptionHandlerConfiguration) === null || _b === void 0 ? void 0 : _b.iceGatheringTimeout : options === null || options === void 0 ? void 0 : options.iceGatheringTimeout;\n        return this.getLocalMediaStream(options).then(()=>this.updateDirection(options)).then(()=>this.createDataChannel(options)).then(()=>this.createLocalOfferOrAnswer(options)).then((sessionDescription)=>this.applyModifiers(sessionDescription, modifiers)).then((sessionDescription)=>this.setLocalSessionDescription(sessionDescription)).then(()=>this.waitForIceGatheringComplete(iceRestart, iceTimeout)).then(()=>this.getLocalSessionDescription()).then((sessionDescription)=>{\n            return {\n                body: sessionDescription.sdp,\n                contentType: \"application/sdp\"\n            };\n        }).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.getDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n     * @param contentType - The content type that is in the SIP Message.\n     */ hasDescription(contentType) {\n        this.logger.debug(\"SessionDescriptionHandler.hasDescription\");\n        return contentType === \"application/sdp\";\n    }\n    /**\n     * Called when ICE gathering completes and resolves any waiting promise.\n     * @remarks\n     * May be called prior to ICE gathering actually completing to allow the\n     * session descirption handler proceed with whatever candidates have been\n     * gathered up to this point in time. Use this to stop waiting on ICE to\n     * complete if you are implementing your own ICE gathering completion strategy.\n     */ iceGatheringComplete() {\n        this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete\");\n        // clear timer if need be\n        if (this.iceGatheringCompleteTimeoutId !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - clearing timeout\");\n            clearTimeout(this.iceGatheringCompleteTimeoutId);\n            this.iceGatheringCompleteTimeoutId = undefined;\n        }\n        // resolve and cleanup promise if need be\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - resolving promise\");\n            this.iceGatheringCompleteResolve && this.iceGatheringCompleteResolve();\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n    }\n    /**\n     * Send DTMF via RTP (RFC 4733).\n     * Returns true if DTMF send is successful, false otherwise.\n     * @param tones - A string containing DTMF digits.\n     * @param options - Options object to be used by sendDtmf.\n     */ sendDtmf(tones, options) {\n        this.logger.debug(\"SessionDescriptionHandler.sendDtmf\");\n        if (this._peerConnection === undefined) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - peer connection closed\");\n            return false;\n        }\n        const senders = this._peerConnection.getSenders();\n        if (senders.length === 0) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no senders\");\n            return false;\n        }\n        const dtmfSender = senders[0].dtmf;\n        if (!dtmfSender) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no DTMF sender\");\n            return false;\n        }\n        const duration = options === null || options === void 0 ? void 0 : options.duration;\n        const interToneGap = options === null || options === void 0 ? void 0 : options.interToneGap;\n        try {\n            dtmfSender.insertDTMF(tones, duration, interToneGap);\n        } catch (e) {\n            this.logger.error(e.toString());\n            return false;\n        }\n        this.logger.log(\"SessionDescriptionHandler.sendDtmf sent via RTP: \" + tones.toString());\n        return true;\n    }\n    /**\n     * Sets an offer or answer.\n     * @param sdp - The session description.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */ setDescription(sdp, options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.setDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // SDP type\n        const type = this._peerConnection.signalingState === \"have-local-offer\" ? \"answer\" : \"offer\";\n        return this.getLocalMediaStream(options).then(()=>this.applyModifiers({\n                sdp: sdp,\n                type: type\n            }, modifiers)).then((sessionDescription)=>this.setRemoteSessionDescription(sessionDescription)).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.setDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Applies modifiers to SDP prior to setting the local or remote description.\n     * @param sdp - SDP to modify.\n     * @param modifiers - Modifiers to apply.\n     */ applyModifiers(sdp, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.applyModifiers\");\n        if (!modifiers || modifiers.length === 0) return Promise.resolve(sdp);\n        return modifiers.reduce((cur, next)=>cur.then(next), Promise.resolve(sdp)).then((modified)=>{\n            this.logger.debug(\"SessionDescriptionHandler.applyModifiers - modified sdp\");\n            if (!modified.sdp || !modified.type) throw new Error(\"Invalid SDP.\");\n            return {\n                sdp: modified.sdp,\n                type: modified.type\n            };\n        });\n    }\n    /**\n     * Create a data channel.\n     * @remarks\n     * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n     * Only creates a data channel if creating a local offer.\n     * Only if one does not already exist.\n     * @param options - Session description handler options.\n     */ createDataChannel(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // only create a data channel if requested\n        if ((options === null || options === void 0 ? void 0 : options.dataChannel) !== true) return Promise.resolve();\n        // do not create a data channel if we already have one\n        if (this._dataChannel) return Promise.resolve();\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer so create a data channel\n                this.logger.debug(\"SessionDescriptionHandler.createDataChannel - creating data channel\");\n                try {\n                    this._dataChannel = this._peerConnection.createDataChannel((options === null || options === void 0 ? void 0 : options.dataChannelLabel) || \"\", options === null || options === void 0 ? void 0 : options.dataChannelOptions);\n                    if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n                    return Promise.resolve();\n                } catch (error) {\n                    return Promise.reject(error);\n                }\n            case \"have-remote-offer\":\n                return Promise.resolve();\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Depending on current signaling state, create a local offer or answer.\n     * @param options - Session description handler options.\n     */ createLocalOfferOrAnswer(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer\");\n                return this._peerConnection.createOffer(options === null || options === void 0 ? void 0 : options.offerOptions);\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer\");\n                return this._peerConnection.createAnswer(options === null || options === void 0 ? void 0 : options.answerOptions);\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Get a media stream from the media stream factory and set the local media stream.\n     * @param options - Session description handler options.\n     */ getLocalMediaStream(options) {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalMediaStream\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        let constraints = Object.assign({}, options === null || options === void 0 ? void 0 : options.constraints);\n        // if we already have a local media stream...\n        if (this.localMediaStreamConstraints) {\n            // ignore constraint \"downgrades\"\n            constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n            constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n            // if constraints have not changed, do not get a new media stream\n            if (JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) && JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)) return Promise.resolve();\n        } else // if no constraints have been specified, default to audio for initial media stream\n        if (constraints.audio === undefined && constraints.video === undefined) constraints = {\n            audio: true\n        };\n        this.localMediaStreamConstraints = constraints;\n        return this.mediaStreamFactory(constraints, this, options).then((mediaStream)=>this.setLocalMediaStream(mediaStream));\n    }\n    /**\n     * Sets the peer connection's sender tracks and local media stream tracks.\n     *\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param stream - Media stream containing tracks to be utilized.\n     */ setLocalMediaStream(stream) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalMediaStream\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const pc = this._peerConnection;\n        const localStream = this._localMediaStream;\n        const trackUpdates = [];\n        const updateTrack = (newTrack)=>{\n            const kind = newTrack.kind;\n            if (kind !== \"audio\" && kind !== \"video\") throw new Error(`Unknown new track kind ${kind}.`);\n            const sender = pc.getSenders().find((sender)=>sender.track && sender.track.kind === kind);\n            if (sender) trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n                resolve();\n            }).then(()=>sender.replaceTrack(newTrack).then(()=>{\n                    const oldTrack = localStream.getTracks().find((localTrack)=>localTrack.kind === kind);\n                    if (oldTrack) {\n                        oldTrack.stop();\n                        localStream.removeTrack(oldTrack);\n                        $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(localStream, oldTrack);\n                    }\n                    localStream.addTrack(newTrack);\n                    $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n                }).catch((error)=>{\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`);\n                    throw error;\n                })));\n            else trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n                resolve();\n            }).then(()=>{\n                // Review: could make streamless tracks a configurable option?\n                // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n                try {\n                    pc.addTrack(newTrack, localStream);\n                } catch (error) {\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n                    throw error;\n                }\n                localStream.addTrack(newTrack);\n                $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n            }));\n        };\n        // update peer connection audio tracks\n        const audioTracks = stream.getAudioTracks();\n        if (audioTracks.length) updateTrack(audioTracks[0]);\n        // update peer connection video tracks\n        const videoTracks = stream.getVideoTracks();\n        if (videoTracks.length) updateTrack(videoTracks[0]);\n        return trackUpdates.reduce((p, x)=>p.then(()=>x), Promise.resolve());\n    }\n    /**\n     * Gets the peer connection's local session description.\n     */ getLocalSessionDescription() {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = this._peerConnection.localDescription;\n        if (!sdp) return Promise.reject(new Error(\"Failed to get local session description\"));\n        return Promise.resolve(sdp);\n    }\n    /**\n     * Sets the peer connection's local session description.\n     * @param sessionDescription - sessionDescription The session description.\n     */ setLocalSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        return this._peerConnection.setLocalDescription(sessionDescription);\n    }\n    /**\n     * Sets the peer connection's remote session description.\n     * @param sessionDescription - The session description.\n     */ setRemoteSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = sessionDescription.sdp;\n        let type;\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable assume this is a remote offer\n                type = \"offer\";\n                break;\n            case \"have-local-offer\":\n                // if we made an offer, assume this is a remote answer\n                type = \"answer\";\n                break;\n            case \"have-local-pranswer\":\n            case \"have-remote-offer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        if (!sdp) {\n            this.logger.error(\"SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp\");\n            return Promise.reject(new Error(\"SDP is undefined\"));\n        }\n        return this._peerConnection.setRemoteDescription({\n            sdp: sdp,\n            type: type\n        });\n    }\n    /**\n     * Sets a remote media stream track.\n     *\n     * @remarks\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param track - Media stream track to be utilized.\n     */ setRemoteTrack(track) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteTrack\");\n        const remoteStream = this._remoteMediaStream;\n        if (remoteStream.getTrackById(track.id)) this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n        else if (track.kind === \"audio\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getAudioTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        } else if (track.kind === \"video\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getVideoTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        }\n    }\n    /**\n     * Depending on the current signaling state and the session hold state, update transceiver direction.\n     * @param options - Session description handler options.\n     */ updateDirection(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // 4.2.3.  setDirection\n        //\n        //    The setDirection method sets the direction of a transceiver, which\n        //    affects the direction property of the associated \"m=\" section on\n        //    future calls to createOffer and createAnswer.  The permitted values\n        //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n        //    mirroring the identically named direction attributes defined in\n        //    [RFC4566], Section 6.\n        //\n        //    When creating offers, the transceiver direction is directly reflected\n        //    in the output, even for re-offers.  When creating answers, the\n        //    transceiver direction is intersected with the offered direction, as\n        //    explained in Section 5.3 below.\n        //\n        //    Note that while setDirection sets the direction property of the\n        //    transceiver immediately (Section 4.2.4), this property does not\n        //    immediately affect whether the transceiver's RtpSender will send or\n        //    its RtpReceiver will receive.  The direction in effect is represented\n        //    by the currentDirection property, which is only updated when an\n        //    answer is applied.\n        //\n        // 4.2.4.  direction\n        //\n        //    The direction property indicates the last value passed into\n        //    setDirection.  If setDirection has never been called, it is set to\n        //    the direction the transceiver was initialized with.\n        //\n        // 4.2.5.  currentDirection\n        //\n        //    The currentDirection property indicates the last negotiated direction\n        //    for the transceiver's associated \"m=\" section.  More specifically, it\n        //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n        //    section in the last applied answer (including provisional answers),\n        //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n        //    For example, if the direction attribute for the associated \"m=\"\n        //    section in a remote answer is \"recvonly\", currentDirection is set to\n        //    \"sendonly\".\n        //\n        //    If an answer that references this transceiver has not yet been\n        //    applied or if the transceiver is stopped, currentDirection is set to\n        //    \"null\".\n        //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n        //\n        // *  A direction attribute, determined by applying the rules regarding\n        //    the offered direction specified in [RFC3264], Section 6.1, and\n        //    then intersecting with the direction of the associated\n        //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n        //    offered as \"sendonly\" and the local transceiver is set to\n        //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n        // https://tools.ietf.org/html/rfc8829#section-5.3.1\n        //\n        // If a stream is offered as sendonly, the corresponding stream MUST be\n        // marked as recvonly or inactive in the answer.  If a media stream is\n        // listed as recvonly in the offer, the answer MUST be marked as\n        // sendonly or inactive in the answer.  If an offered media stream is\n        // listed as sendrecv (or if there is no direction attribute at the\n        // media or session level, in which case the stream is sendrecv by\n        // default), the corresponding stream in the answer MAY be marked as\n        // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n        // stream is listed as inactive, it MUST be marked as inactive in the\n        // answer.\n        // https://tools.ietf.org/html/rfc3264#section-6.1\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting offer direction\");\n                {\n                    // determine the direction to offer given the current direction and hold state\n                    const directionToOffer = (currentDirection)=>{\n                        switch(currentDirection){\n                            case \"inactive\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"recvonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"stopped\":\n                                return \"stopped\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    };\n                    // set the transceiver direction to the offer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            const offerDirection = directionToOffer(transceiver.direction);\n                            if (transceiver.direction !== offerDirection) transceiver.direction = offerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting answer direction\");\n                // FIXME: This is not the correct way to determine the answer direction as it is only\n                // considering first match in the offered SDP and using that to determine the answer direction.\n                // While that may be fine for our current use cases, it is not a generally correct approach.\n                {\n                    // determine the offered direction\n                    const offeredDirection = (()=>{\n                        const description = this._peerConnection.remoteDescription;\n                        if (!description) throw new Error(\"Failed to read remote offer\");\n                        const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n                        if (searchResult) switch(searchResult[0]){\n                            case \"a=inactive\\r\\n\":\n                                return \"inactive\";\n                            case \"a=recvonly\\r\\n\":\n                                return \"recvonly\";\n                            case \"a=sendonly\\r\\n\":\n                                return \"sendonly\";\n                            case \"a=sendrecv\\r\\n\":\n                                return \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                        return \"sendrecv\";\n                    })();\n                    // determine the answer direction based on the offered direction and our hold state\n                    const answerDirection = (()=>{\n                        switch(offeredDirection){\n                            case \"inactive\":\n                                return \"inactive\";\n                            case \"recvonly\":\n                                return \"sendonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    })();\n                    // set the transceiver direction to the answer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            if (transceiver.direction !== \"stopped\" && transceiver.direction !== answerDirection) transceiver.direction = answerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Wait for ICE gathering to complete.\n     * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n     * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n     */ waitForIceGatheringComplete(restart = false, timeout = 0) {\n        this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete\");\n        if (this._peerConnection === undefined) return Promise.reject(\"Peer connection closed.\");\n        // guard already complete\n        if (!restart && this._peerConnection.iceGatheringState === \"complete\") {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - already complete\");\n            return Promise.resolve();\n        }\n        // only one may be waiting, reject any prior\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise\");\n            this.iceGatheringCompleteReject && this.iceGatheringCompleteReject(new Error(\"Promise superseded.\"));\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n        this.iceGatheringCompletePromise = new Promise((resolve, reject)=>{\n            this.iceGatheringCompleteResolve = resolve;\n            this.iceGatheringCompleteReject = reject;\n            if (timeout > 0) {\n                this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in \" + timeout);\n                this.iceGatheringCompleteTimeoutId = setTimeout(()=>{\n                    this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout\");\n                    this.iceGatheringComplete();\n                }, timeout);\n            }\n        });\n        return this.iceGatheringCompletePromise;\n    }\n    /**\n     * Initializes the peer connection event handlers\n     */ initPeerConnectionEventHandlers() {\n        this.logger.debug(\"SessionDescriptionHandler.initPeerConnectionEventHandlers\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const peerConnection = this._peerConnection;\n        peerConnection.onconnectionstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.connectionState;\n            this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onconnectionstatechange) this._peerConnectionDelegate.onconnectionstatechange(event);\n        };\n        peerConnection.ondatachannel = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.ondatachannel`);\n            this._dataChannel = event.channel;\n            if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ondatachannel) this._peerConnectionDelegate.ondatachannel(event);\n        };\n        peerConnection.onicecandidate = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidate`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidate) this._peerConnectionDelegate.onicecandidate(event);\n        };\n        peerConnection.onicecandidateerror = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidateerror`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidateerror) this._peerConnectionDelegate.onicecandidateerror(event);\n        };\n        peerConnection.oniceconnectionstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.iceConnectionState;\n            this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.oniceconnectionstatechange) this._peerConnectionDelegate.oniceconnectionstatechange(event);\n        };\n        peerConnection.onicegatheringstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.iceGatheringState;\n            this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n            if (newState === \"complete\") this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicegatheringstatechange) this._peerConnectionDelegate.onicegatheringstatechange(event);\n        };\n        peerConnection.onnegotiationneeded = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onnegotiationneeded`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onnegotiationneeded) this._peerConnectionDelegate.onnegotiationneeded(event);\n        };\n        peerConnection.onsignalingstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.signalingState;\n            this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onsignalingstatechange) this._peerConnectionDelegate.onsignalingstatechange(event);\n        };\n        peerConnection.ontrack = (event)=>{\n            var _a;\n            const kind = event.track.kind;\n            const enabled = event.track.enabled ? \"enabled\" : \"disabled\";\n            this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n            this.setRemoteTrack(event.track);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ontrack) this._peerConnectionDelegate.ontrack(event);\n        };\n    }\n}\n\n\nfunction $1fb45aa3bdfbf189$export$882edbaac6eb455(mediaStreamFactory) {\n    return (session, options)=>{\n        // provide a default media stream factory if need be\n        if (mediaStreamFactory === undefined) mediaStreamFactory = (0, $f1bd11e6eecfe5be$export$1ffd34e85fb79026)();\n        // make sure we allow `0` to be passed in so timeout can be disabled\n        const iceGatheringTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) !== undefined ? options === null || options === void 0 ? void 0 : options.iceGatheringTimeout : 5000;\n        // merge passed factory options into default session description configuration\n        const sessionDescriptionHandlerConfiguration = {\n            iceGatheringTimeout: iceGatheringTimeout,\n            peerConnectionConfiguration: Object.assign(Object.assign({}, (0, $48c43aaa2d64dacd$export$4ffaee600e913aea)()), options === null || options === void 0 ? void 0 : options.peerConnectionConfiguration)\n        };\n        const logger = session.userAgent.getLogger(\"sip.SessionDescriptionHandler\");\n        return new (0, $744f32b2d87f082d$export$4d703fa87dd9817a)(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n    };\n}\n\n\nvar $abeab00efa041895$exports = {};\n\n\nvar $c77c02486cfe71b5$exports = {};\n\n\nvar $8b7501600b5a917c$exports = {};\n\n\n\nvar $b8dd480cc004014a$exports = {};\n\n$parcel$export($b8dd480cc004014a$exports, \"startLocalConference\", () => $b8dd480cc004014a$export$730d0ecf036046df);\n$parcel$export($b8dd480cc004014a$exports, \"WebAudioSessionDescriptionHandler\", () => $b8dd480cc004014a$export$6a29fc62f7a13ada);\n\nfunction $b8dd480cc004014a$export$730d0ecf036046df(conferenceSessions) {\n    if (conferenceSessions.length < 2) throw new Error(\"Start local conference requires at leaast 2 sessions.\");\n    // Return all possible pairs of elements in an array.\n    const pairs = (arr)=>arr.map((v, i)=>arr.slice(i + 1).map((w)=>[\n                    v,\n                    w\n                ])).reduce((acc, curVal)=>acc.concat(curVal), []);\n    // For each pair of sessions making up the conference, join their media together.\n    // A session desciprion handler manages the media, streams and tracks for a session.\n    pairs(conferenceSessions.map((session)=>session.sessionDescriptionHandler)).forEach(([sdh0, sdh1])=>{\n        if (!(sdh0 instanceof $b8dd480cc004014a$export$6a29fc62f7a13ada && sdh1 instanceof $b8dd480cc004014a$export$6a29fc62f7a13ada)) throw new Error(\"Session description handler not instance of SessionManagerSessionDescriptionHandler\");\n        sdh0.joinWith(sdh1);\n    });\n}\nclass $b8dd480cc004014a$export$6a29fc62f7a13ada extends (0, $744f32b2d87f082d$export$4d703fa87dd9817a) {\n    constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration){\n        super(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext = new AudioContext();\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks.\n     */ enableSenderTracks(enable) {\n        // This session decription handler is not using the original outbound (local) media stream source\n        // and has instead inserted a Web Audio proxy media stream to allow conferencing and mixing of stream.\n        // So here, we only want to mute the original source and not the proxy as it may be mixing other\n        // sources into the outbound stream and we do not want to enable/disable those. We only want to\n        // enable/disable the original stream source so that it's media gets muted/unmuted going to the proxy.\n        const stream = this.localMediaStreamReal;\n        if (stream === undefined) throw new Error(\"Stream undefined.\");\n        stream.getAudioTracks().forEach((track)=>{\n            track.enabled = enable;\n        });\n    }\n    /**\n     * Returns a WebRTC MediaStream proxying the provided audio media stream.\n     * This allows additional Web Audio media stream source nodes to be connected\n     * to the destination node assoicated with the returned stream so we can mix\n     * aditional audio sorces into the local media stream (ie for 3-way conferencing).\n     * @param stream - The MediaStream to proxy.\n     */ initLocalMediaStream(stream) {\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamDestinationNode = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamDestination();\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n        return this.localMediaStreamDestinationNode.stream;\n    }\n    /**\n     * Join (conference) media streams with another party.\n     * @param peer - The session description handler of the peer to join with.\n     */ joinWith(peer) {\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        // Mix our inbound (remote) stream into the peer's outbound (local) streams.\n        const ourNewInboundStreamSource = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(this.remoteMediaStream);\n        const peerOutboundStreamDestination = peer.localMediaStreamDestinationNode;\n        if (peerOutboundStreamDestination === undefined) throw new Error(\"Peer outbound (local) stream local media stream destination is undefined.\");\n        ourNewInboundStreamSource.connect(peerOutboundStreamDestination);\n        // Mix the peer's inbound (remote) streams into our outbound (local) stream.\n        const peerNewInboundStreamSource = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(peer.remoteMediaStream);\n        const ourOutboundStreamDestination = this.localMediaStreamDestinationNode;\n        if (ourOutboundStreamDestination === undefined) throw new Error(\"Our outbound (local) stream local media stream destination is undefined.\");\n        peerNewInboundStreamSource.connect(ourOutboundStreamDestination);\n    }\n    /**\n     * Sets the original local media stream.\n     * @param stream - Media stream containing tracks to be utilized.\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     */ setRealLocalMediaStream(stream) {\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        if (!this.localMediaStreamReal) {\n            this.initLocalMediaStream(stream);\n            return;\n        }\n        if (!this.localMediaStreamDestinationNode || !this.localMediaStreamSourceNode || !this.localMediaStreamReal) throw new Error(\"Local media stream undefined.\");\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode.disconnect(this.localMediaStreamDestinationNode);\n        this.localMediaStreamSourceNode = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n    }\n}\n\n\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $f1bd11e6eecfe5be$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $a53eddbe3defb51a$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $48c43aaa2d64dacd$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $a76119fc66d0a494$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $8f7ddb74cb4364bb$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $1fb45aa3bdfbf189$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $abeab00efa041895$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $c77c02486cfe71b5$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $8b7501600b5a917c$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $744f32b2d87f082d$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $b8dd480cc004014a$exports);\n\n\nvar $a37506df75e7b770$exports = {};\nvar $6dd294c5c57173ab$exports = {};\n\n$parcel$export($6dd294c5c57173ab$exports, \"defaultManagedSessionFactory\", () => $6dd294c5c57173ab$export$9c571c3c8f631dc5);\n/**\n * Function which returns a ManagedSessionFactory.\n * @public\n */ function $6dd294c5c57173ab$export$9c571c3c8f631dc5() {\n    return (sessionManager, session)=>{\n        return {\n            session: session,\n            held: false,\n            muted: false\n        };\n    };\n}\n\n\nvar $2f3039e766a741e2$exports = {};\n\n\nvar $604c8363074a1f2a$exports = {};\n\n\nvar $90f33367fbfb4ac7$exports = {};\n\n\nvar $6a48556e30a930bb$exports = {};\n\n\nvar $d5859fd1c29de512$exports = {};\n\n$parcel$export($d5859fd1c29de512$exports, \"SessionManager\", () => $d5859fd1c29de512$export$415798a788f40554);\n/* eslint-disable @typescript-eslint/no-namespace */ /* eslint-disable no-inner-declarations */ /**\n * @internal\n */ class $1917324720dacad5$export$3306d411ac0d2657 {\n    constructor(parameters){\n        this.parameters = {};\n        // for in is required here as the Grammar parser is adding to the prototype chain\n        for(const param in parameters)// eslint-disable-next-line no-prototype-builtins\n        if (parameters.hasOwnProperty(param)) this.setParam(param, parameters[param]);\n    }\n    setParam(key, value) {\n        if (key) this.parameters[key.toLowerCase()] = typeof value === \"undefined\" || value === null ? null : value.toString();\n    }\n    getParam(key) {\n        if (key) return this.parameters[key.toLowerCase()];\n    }\n    hasParam(key) {\n        return !!(key && this.parameters[key.toLowerCase()] !== undefined);\n    }\n    deleteParam(key) {\n        key = key.toLowerCase();\n        if (this.hasParam(key)) {\n            const value = this.parameters[key];\n            delete this.parameters[key];\n            return value;\n        }\n    }\n    clearParams() {\n        this.parameters = {};\n    }\n}\n\n\nclass $b62549b966a08c5b$export$426a8f49e69dc5fe extends (0, $1917324720dacad5$export$3306d411ac0d2657) {\n    /**\n     * Constructor\n     * @param uri -\n     * @param displayName -\n     * @param parameters -\n     */ constructor(uri, displayName, parameters){\n        super(parameters);\n        this.uri = uri;\n        this._displayName = displayName;\n    }\n    get friendlyName() {\n        return this.displayName || this.uri.aor;\n    }\n    get displayName() {\n        return this._displayName;\n    }\n    set displayName(value) {\n        this._displayName = value;\n    }\n    clone() {\n        return new $b62549b966a08c5b$export$426a8f49e69dc5fe(this.uri.clone(), this._displayName, JSON.parse(JSON.stringify(this.parameters)));\n    }\n    toString() {\n        let body = this.displayName || this.displayName === \"0\" ? '\"' + this.displayName + '\" ' : \"\";\n        body += \"<\" + this.uri.toString() + \">\";\n        for(const parameter in this.parameters)// eslint-disable-next-line no-prototype-builtins\n        if (this.parameters.hasOwnProperty(parameter)) {\n            body += \";\" + parameter;\n            if (this.parameters[parameter] !== null) body += \"=\" + this.parameters[parameter];\n        }\n        return body;\n    }\n}\n\n\n/* eslint-disable @typescript-eslint/no-explicit-any */ \nclass $dbdae61072997c03$export$9156e739aa33e19f extends (0, $1917324720dacad5$export$3306d411ac0d2657) {\n    /**\n     * Constructor\n     * @param scheme -\n     * @param user -\n     * @param host -\n     * @param port -\n     * @param parameters -\n     * @param headers -\n     */ constructor(scheme = \"sip\", user, host, port, parameters, headers){\n        super(parameters || {});\n        this.headers = {};\n        // Checks\n        if (!host) throw new TypeError('missing or invalid \"host\" parameter');\n        for(const header in headers)// eslint-disable-next-line no-prototype-builtins\n        if (headers.hasOwnProperty(header)) this.setHeader(header, headers[header]);\n        // Raw URI\n        this.raw = {\n            scheme: scheme,\n            user: user,\n            host: host,\n            port: port\n        };\n        // Normalized URI\n        this.normal = {\n            scheme: scheme.toLowerCase(),\n            user: user,\n            host: host.toLowerCase(),\n            port: port\n        };\n    }\n    get scheme() {\n        return this.normal.scheme;\n    }\n    set scheme(value) {\n        this.raw.scheme = value;\n        this.normal.scheme = value.toLowerCase();\n    }\n    get user() {\n        return this.normal.user;\n    }\n    set user(value) {\n        this.normal.user = this.raw.user = value;\n    }\n    get host() {\n        return this.normal.host;\n    }\n    set host(value) {\n        this.raw.host = value;\n        this.normal.host = value.toLowerCase();\n    }\n    get aor() {\n        return this.normal.user + \"@\" + this.normal.host;\n    }\n    get port() {\n        return this.normal.port;\n    }\n    set port(value) {\n        this.normal.port = this.raw.port = value === 0 ? value : value;\n    }\n    setHeader(name, value) {\n        this.headers[this.headerize(name)] = value instanceof Array ? value : [\n            value\n        ];\n    }\n    getHeader(name) {\n        if (name) return this.headers[this.headerize(name)];\n    }\n    hasHeader(name) {\n        // eslint-disable-next-line no-prototype-builtins\n        return !!name && !!this.headers.hasOwnProperty(this.headerize(name));\n    }\n    deleteHeader(header) {\n        header = this.headerize(header);\n        // eslint-disable-next-line no-prototype-builtins\n        if (this.headers.hasOwnProperty(header)) {\n            const value = this.headers[header];\n            delete this.headers[header];\n            return value;\n        }\n    }\n    clearHeaders() {\n        this.headers = {};\n    }\n    clone() {\n        return new $dbdae61072997c03$export$9156e739aa33e19f(this._raw.scheme, this._raw.user || \"\", this._raw.host, this._raw.port, JSON.parse(JSON.stringify(this.parameters)), JSON.parse(JSON.stringify(this.headers)));\n    }\n    toRaw() {\n        return this._toString(this._raw);\n    }\n    toString() {\n        return this._toString(this._normal);\n    }\n    get _normal() {\n        return this.normal;\n    }\n    get _raw() {\n        return this.raw;\n    }\n    _toString(uri) {\n        let uriString = uri.scheme + \":\";\n        // add slashes if it's not a sip(s) URI\n        if (!uri.scheme.toLowerCase().match(\"^sips?$\")) uriString += \"//\";\n        if (uri.user) uriString += this.escapeUser(uri.user) + \"@\";\n        uriString += uri.host;\n        if (uri.port || uri.port === 0) uriString += \":\" + uri.port;\n        for(const parameter in this.parameters)// eslint-disable-next-line no-prototype-builtins\n        if (this.parameters.hasOwnProperty(parameter)) {\n            uriString += \";\" + parameter;\n            if (this.parameters[parameter] !== null) uriString += \"=\" + this.parameters[parameter];\n        }\n        const headers = [];\n        for(const header in this.headers)// eslint-disable-next-line no-prototype-builtins\n        if (this.headers.hasOwnProperty(header)) {\n            // eslint-disable-next-line @typescript-eslint/no-for-in-array\n            for(const idx in this.headers[header])// eslint-disable-next-line no-prototype-builtins\n            if (this.headers[header].hasOwnProperty(idx)) headers.push(header + \"=\" + this.headers[header][idx]);\n        }\n        if (headers.length > 0) uriString += \"?\" + headers.join(\"&\");\n        return uriString;\n    }\n    /*\n     * Hex-escape a SIP URI user.\n     * @private\n     * @param {String} user\n     */ escapeUser(user) {\n        let decodedUser;\n        // FIXME: This is called by toString above which should never throw, but\n        // decodeURIComponent can throw and I've seen one case in production where\n        // it did throw resulting in a cascading failure. This class should be\n        // fixed so that decodeURIComponent is not called at this point (in toString).\n        // The user should be decoded when the URI is constructor or some other\n        // place where we can catch the error before the URI is created or somesuch.\n        // eslint-disable-next-line no-useless-catch\n        try {\n            decodedUser = decodeURIComponent(user);\n        } catch (error) {\n            throw error;\n        }\n        // Don't hex-escape ':' (%3A), '+' (%2B), '?' (%3F\"), '/' (%2F).\n        return encodeURIComponent(decodedUser).replace(/%3A/ig, \":\").replace(/%2B/ig, \"+\").replace(/%3F/ig, \"?\").replace(/%2F/ig, \"/\");\n    }\n    headerize(str) {\n        const exceptions = {\n            \"Call-Id\": \"Call-ID\",\n            \"Cseq\": \"CSeq\",\n            \"Min-Se\": \"Min-SE\",\n            \"Rack\": \"RAck\",\n            \"Rseq\": \"RSeq\",\n            \"Www-Authenticate\": \"WWW-Authenticate\"\n        };\n        const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n        const parts = name.length;\n        let hname = \"\";\n        for(let part = 0; part < parts; part++){\n            if (part !== 0) hname += \"-\";\n            hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n        }\n        if (exceptions[hname]) hname = exceptions[hname];\n        return hname;\n    }\n}\nfunction $dbdae61072997c03$export$2cee8b57bfbd7333(a, b) {\n    // o  A SIP and SIPS URI are never equivalent.\n    if (a.scheme !== b.scheme) return false;\n    // o  Comparison of the userinfo of SIP and SIPS URIs is case-\n    //    sensitive.  This includes userinfo containing passwords or\n    //    formatted as telephone-subscribers.  Comparison of all other\n    //    components of the URI is case-insensitive unless explicitly\n    //    defined otherwise.\n    //\n    // o  The ordering of parameters and header fields is not significant\n    //    in comparing SIP and SIPS URIs.\n    //\n    // o  Characters other than those in the \"reserved\" set (see RFC 2396\n    //    [5]) are equivalent to their \"\"%\" HEX HEX\" encoding.\n    //\n    // o  An IP address that is the result of a DNS lookup of a host name\n    //    does not match that host name.\n    //\n    // o  For two URIs to be equal, the user, password, host, and port\n    //    components must match.\n    //\n    // A URI omitting the user component will not match a URI that\n    // includes one.  A URI omitting the password component will not\n    // match a URI that includes one.\n    //\n    // A URI omitting any component with a default value will not\n    // match a URI explicitly containing that component with its\n    // default value.  For instance, a URI omitting the optional port\n    // component will not match a URI explicitly declaring port 5060.\n    // The same is true for the transport-parameter, ttl-parameter,\n    // user-parameter, and method components.\n    //\n    // Defining sip:user@host to not be equivalent to\n    // sip:user@host:5060 is a change from RFC 2543.  When deriving\n    // addresses from URIs, equivalent addresses are expected from\n    // equivalent URIs.  The URI sip:user@host:5060 will always\n    // resolve to port 5060.  The URI sip:user@host may resolve to\n    // other ports through the DNS SRV mechanisms detailed in [4].\n    // FIXME: TODO:\n    // - character compared to hex encoding is not handled\n    // - password does not exist on URI currently\n    if (a.user !== b.user || a.host !== b.host || a.port !== b.port) return false;\n    // o  URI uri-parameter components are compared as follows:\n    function compareParameters(a, b) {\n        //  -  Any uri-parameter appearing in both URIs must match.\n        const parameterKeysA = Object.keys(a.parameters);\n        const parameterKeysB = Object.keys(b.parameters);\n        const intersection = parameterKeysA.filter((x)=>parameterKeysB.includes(x));\n        if (!intersection.every((key)=>a.parameters[key] === b.parameters[key])) return false;\n        //  -  A user, ttl, or method uri-parameter appearing in only one\n        //     URI never matches, even if it contains the default value.\n        if (![\n            \"user\",\n            \"ttl\",\n            \"method\",\n            \"transport\"\n        ].every((key)=>a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) return false;\n        //  -  A URI that includes an maddr parameter will not match a URI\n        //     that contains no maddr parameter.\n        if (![\n            \"maddr\"\n        ].every((key)=>a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) return false;\n        //  -  All other uri-parameters appearing in only one URI are\n        //     ignored when comparing the URIs.\n        return true;\n    }\n    if (!compareParameters(a, b)) return false;\n    // o  URI header components are never ignored.  Any present header\n    //    component MUST be present in both URIs and match for the URIs\n    //    to match.  The matching rules are defined for each header field\n    //    in Section 20.\n    const headerKeysA = Object.keys(a.headers);\n    const headerKeysB = Object.keys(b.headers);\n    // No need to check if no headers\n    if (headerKeysA.length !== 0 || headerKeysB.length !== 0) {\n        // Must have same number of headers\n        if (headerKeysA.length !== headerKeysB.length) return false;\n        // Must have same headers\n        const intersection = headerKeysA.filter((x)=>headerKeysB.includes(x));\n        if (intersection.length !== headerKeysB.length) return false;\n        // FIXME: Not to spec. But perhaps not worth fixing?\n        // Must have same header values\n        // It seems too much to consider multiple headers with same name.\n        // It seems too much to compare two header params according to the rule of each header.\n        // We'll assume a single header and compare them string to string...\n        if (!intersection.every((key)=>a.headers[key].length && b.headers[key].length && a.headers[key][0] === b.headers[key][0])) return false;\n    }\n    return true;\n}\n\n\nfunction $c65620b741f6e224$var$peg$padEnd(str, targetLength, padString) {\n    padString = padString || \" \";\n    if (str.length > targetLength) return str;\n    targetLength -= str.length;\n    padString += padString.repeat(targetLength);\n    return str + padString.slice(0, targetLength);\n}\nclass $c65620b741f6e224$export$f21cea08b0dd60e8 extends Error {\n    constructor(message, expected, found, location){\n        super();\n        this.message = message;\n        this.expected = expected;\n        this.found = found;\n        this.location = location;\n        this.name = \"SyntaxError\";\n        if (typeof Object.setPrototypeOf === \"function\") Object.setPrototypeOf(this, $c65620b741f6e224$export$f21cea08b0dd60e8.prototype);\n        else this.__proto__ = $c65620b741f6e224$export$f21cea08b0dd60e8.prototype;\n        if (typeof Error.captureStackTrace === \"function\") Error.captureStackTrace(this, $c65620b741f6e224$export$f21cea08b0dd60e8);\n    }\n    static buildMessage(expected, found) {\n        function hex(ch) {\n            return ch.charCodeAt(0).toString(16).toUpperCase();\n        }\n        function literalEscape(s) {\n            return s.replace(/\\\\/g, \"\\\\\\\\\").replace(/\"/g, '\\\\\"').replace(/\\0/g, \"\\\\0\").replace(/\\t/g, \"\\\\t\").replace(/\\n/g, \"\\\\n\").replace(/\\r/g, \"\\\\r\").replace(/[\\x00-\\x0F]/g, (ch)=>\"\\\\x0\" + hex(ch)).replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch)=>\"\\\\x\" + hex(ch));\n        }\n        function classEscape(s) {\n            return s.replace(/\\\\/g, \"\\\\\\\\\").replace(/\\]/g, \"\\\\]\").replace(/\\^/g, \"\\\\^\").replace(/-/g, \"\\\\-\").replace(/\\0/g, \"\\\\0\").replace(/\\t/g, \"\\\\t\").replace(/\\n/g, \"\\\\n\").replace(/\\r/g, \"\\\\r\").replace(/[\\x00-\\x0F]/g, (ch)=>\"\\\\x0\" + hex(ch)).replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch)=>\"\\\\x\" + hex(ch));\n        }\n        function describeExpectation(expectation) {\n            switch(expectation.type){\n                case \"literal\":\n                    return '\"' + literalEscape(expectation.text) + '\"';\n                case \"class\":\n                    const escapedParts = expectation.parts.map((part)=>{\n                        return Array.isArray(part) ? classEscape(part[0]) + \"-\" + classEscape(part[1]) : classEscape(part);\n                    });\n                    return \"[\" + (expectation.inverted ? \"^\" : \"\") + escapedParts + \"]\";\n                case \"any\":\n                    return \"any character\";\n                case \"end\":\n                    return \"end of input\";\n                case \"other\":\n                    return expectation.description;\n            }\n        }\n        function describeExpected(expected1) {\n            const descriptions = expected1.map(describeExpectation);\n            let i;\n            let j;\n            descriptions.sort();\n            if (descriptions.length > 0) {\n                for(i = 1, j = 1; i < descriptions.length; i++)if (descriptions[i - 1] !== descriptions[i]) {\n                    descriptions[j] = descriptions[i];\n                    j++;\n                }\n                descriptions.length = j;\n            }\n            switch(descriptions.length){\n                case 1:\n                    return descriptions[0];\n                case 2:\n                    return descriptions[0] + \" or \" + descriptions[1];\n                default:\n                    return descriptions.slice(0, -1).join(\", \") + \", or \" + descriptions[descriptions.length - 1];\n            }\n        }\n        function describeFound(found1) {\n            return found1 ? '\"' + literalEscape(found1) + '\"' : \"end of input\";\n        }\n        return \"Expected \" + describeExpected(expected) + \" but \" + describeFound(found) + \" found.\";\n    }\n    format(sources) {\n        let str = \"Error: \" + this.message;\n        if (this.location) {\n            let src = null;\n            let k;\n            for(k = 0; k < sources.length; k++)if (sources[k].source === this.location.source) {\n                src = sources[k].text.split(/\\r\\n|\\n|\\r/g);\n                break;\n            }\n            let s = this.location.start;\n            let loc = this.location.source + \":\" + s.line + \":\" + s.column;\n            if (src) {\n                let e = this.location.end;\n                let filler = $c65620b741f6e224$var$peg$padEnd(\"\", s.line.toString().length, \" \");\n                let line = src[s.line - 1];\n                let last = s.line === e.line ? e.column : line.length + 1;\n                str += \"\\n --> \" + loc + \"\\n\" + filler + \" |\\n\" + s.line + \" | \" + line + \"\\n\" + filler + \" | \" + $c65620b741f6e224$var$peg$padEnd(\"\", s.column - 1, \" \") + $c65620b741f6e224$var$peg$padEnd(\"\", last - s.column, \"^\");\n            } else str += \"\\n at \" + loc;\n        }\n        return str;\n    }\n}\nfunction $c65620b741f6e224$var$peg$parse(input, options) {\n    options = options !== undefined ? options : {};\n    const peg$FAILED = {};\n    const peg$source = options.grammarSource;\n    const peg$startRuleIndices = {\n        Contact: 119,\n        Name_Addr_Header: 156,\n        Record_Route: 176,\n        Request_Response: 81,\n        SIP_URI: 45,\n        Subscription_State: 186,\n        Supported: 191,\n        Require: 182,\n        Via: 194,\n        absoluteURI: 84,\n        Call_ID: 118,\n        Content_Disposition: 130,\n        Content_Length: 135,\n        Content_Type: 136,\n        CSeq: 146,\n        displayName: 122,\n        Event: 149,\n        From: 151,\n        host: 52,\n        Max_Forwards: 154,\n        Min_SE: 213,\n        Proxy_Authenticate: 157,\n        quoted_string: 40,\n        Refer_To: 178,\n        Replaces: 179,\n        Session_Expires: 210,\n        stun_URI: 217,\n        To: 192,\n        turn_URI: 223,\n        uuid: 226,\n        WWW_Authenticate: 209,\n        challenge: 158,\n        sipfrag: 230,\n        Referred_By: 231\n    };\n    let peg$startRuleIndex = 119;\n    const peg$consts = [\n        \"\\r\\n\",\n        peg$literalExpectation(\"\\r\\n\", false),\n        /^[0-9]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"9\"\n            ]\n        ], false, false),\n        /^[a-zA-Z]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ]\n        ], false, false),\n        /^[0-9a-fA-F]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"9\"\n            ],\n            [\n                \"a\",\n                \"f\"\n            ],\n            [\n                \"A\",\n                \"F\"\n            ]\n        ], false, false),\n        /^[\\0-\\xFF]/,\n        peg$classExpectation([\n            [\n                \"\\0\",\n                \"\\xff\"\n            ]\n        ], false, false),\n        /^[\"]/,\n        peg$classExpectation([\n            '\"'\n        ], false, false),\n        \" \",\n        peg$literalExpectation(\" \", false),\n        \"\t\",\n        peg$literalExpectation(\"\t\", false),\n        /^[a-zA-Z0-9]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ],\n            [\n                \"0\",\n                \"9\"\n            ]\n        ], false, false),\n        \";\",\n        peg$literalExpectation(\";\", false),\n        \"/\",\n        peg$literalExpectation(\"/\", false),\n        \"?\",\n        peg$literalExpectation(\"?\", false),\n        \":\",\n        peg$literalExpectation(\":\", false),\n        \"@\",\n        peg$literalExpectation(\"@\", false),\n        \"&\",\n        peg$literalExpectation(\"&\", false),\n        \"=\",\n        peg$literalExpectation(\"=\", false),\n        \"+\",\n        peg$literalExpectation(\"+\", false),\n        \"$\",\n        peg$literalExpectation(\"$\", false),\n        \",\",\n        peg$literalExpectation(\",\", false),\n        \"-\",\n        peg$literalExpectation(\"-\", false),\n        \"_\",\n        peg$literalExpectation(\"_\", false),\n        \".\",\n        peg$literalExpectation(\".\", false),\n        \"!\",\n        peg$literalExpectation(\"!\", false),\n        \"~\",\n        peg$literalExpectation(\"~\", false),\n        \"*\",\n        peg$literalExpectation(\"*\", false),\n        \"'\",\n        peg$literalExpectation(\"'\", false),\n        \"(\",\n        peg$literalExpectation(\"(\", false),\n        \")\",\n        peg$literalExpectation(\")\", false),\n        \"%\",\n        peg$literalExpectation(\"%\", false),\n        function() {\n            return \" \";\n        },\n        function() {\n            return \":\";\n        },\n        /^[!-~]/,\n        peg$classExpectation([\n            [\n                \"!\",\n                \"~\"\n            ]\n        ], false, false),\n        /^[\\x80-\\uFFFF]/,\n        peg$classExpectation([\n            [\n                \"\\x80\",\n                \"\\uFFFF\"\n            ]\n        ], false, false),\n        /^[\\x80-\\xBF]/,\n        peg$classExpectation([\n            [\n                \"\\x80\",\n                \"\\xbf\"\n            ]\n        ], false, false),\n        /^[a-f]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"f\"\n            ]\n        ], false, false),\n        \"`\",\n        peg$literalExpectation(\"`\", false),\n        \"<\",\n        peg$literalExpectation(\"<\", false),\n        \">\",\n        peg$literalExpectation(\">\", false),\n        \"\\\\\",\n        peg$literalExpectation(\"\\\\\", false),\n        \"[\",\n        peg$literalExpectation(\"[\", false),\n        \"]\",\n        peg$literalExpectation(\"]\", false),\n        \"{\",\n        peg$literalExpectation(\"{\", false),\n        \"}\",\n        peg$literalExpectation(\"}\", false),\n        function() {\n            return \"*\";\n        },\n        function() {\n            return \"/\";\n        },\n        function() {\n            return \"=\";\n        },\n        function() {\n            return \"(\";\n        },\n        function() {\n            return \")\";\n        },\n        function() {\n            return \">\";\n        },\n        function() {\n            return \"<\";\n        },\n        function() {\n            return \",\";\n        },\n        function() {\n            return \";\";\n        },\n        function() {\n            return \":\";\n        },\n        function() {\n            return '\"';\n        },\n        /^[!-']/,\n        peg$classExpectation([\n            [\n                \"!\",\n                \"'\"\n            ]\n        ], false, false),\n        /^[*-[]/,\n        peg$classExpectation([\n            [\n                \"*\",\n                \"[\"\n            ]\n        ], false, false),\n        /^[\\]-~]/,\n        peg$classExpectation([\n            [\n                \"]\",\n                \"~\"\n            ]\n        ], false, false),\n        function(contents) {\n            return contents;\n        },\n        /^[#-[]/,\n        peg$classExpectation([\n            [\n                \"#\",\n                \"[\"\n            ]\n        ], false, false),\n        /^[\\0-\\t]/,\n        peg$classExpectation([\n            [\n                \"\\0\",\n                \"\t\"\n            ]\n        ], false, false),\n        /^[\\v-\\f]/,\n        peg$classExpectation([\n            [\n                \"\\v\",\n                \"\\f\"\n            ]\n        ], false, false),\n        /^[\\x0E-\\x7F]/,\n        peg$classExpectation([\n            [\n                \"\\x0e\",\n                \"\\x7f\"\n            ]\n        ], false, false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.uri = new (0, $dbdae61072997c03$export$9156e739aa33e19f)(options.data.scheme, options.data.user, options.data.host, options.data.port);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.uri = new (0, $dbdae61072997c03$export$9156e739aa33e19f)(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n            delete options.data.uri_params;\n            if (options.startRule === \"SIP_URI\") options.data = options.data.uri;\n        },\n        \"sips\",\n        peg$literalExpectation(\"sips\", true),\n        \"sip\",\n        peg$literalExpectation(\"sip\", true),\n        function(uri_scheme) {\n            options = options || {\n                data: {}\n            };\n            options.data.scheme = uri_scheme;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.user = decodeURIComponent(text().slice(0, -1));\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.password = text();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host = text();\n            return options.data.host;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"domain\";\n            return text();\n        },\n        /^[a-zA-Z0-9_\\-]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ],\n            [\n                \"0\",\n                \"9\"\n            ],\n            \"_\",\n            \"-\"\n        ], false, false),\n        /^[a-zA-Z0-9\\-]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ],\n            [\n                \"0\",\n                \"9\"\n            ],\n            \"-\"\n        ], false, false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"IPv6\";\n            return text();\n        },\n        \"::\",\n        peg$literalExpectation(\"::\", false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"IPv6\";\n            return text();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"IPv4\";\n            return text();\n        },\n        \"25\",\n        peg$literalExpectation(\"25\", false),\n        /^[0-5]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"5\"\n            ]\n        ], false, false),\n        \"2\",\n        peg$literalExpectation(\"2\", false),\n        /^[0-4]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"4\"\n            ]\n        ], false, false),\n        \"1\",\n        peg$literalExpectation(\"1\", false),\n        /^[1-9]/,\n        peg$classExpectation([\n            [\n                \"1\",\n                \"9\"\n            ]\n        ], false, false),\n        function(port) {\n            options = options || {\n                data: {}\n            };\n            port = parseInt(port.join(\"\"));\n            options.data.port = port;\n            return port;\n        },\n        \"transport=\",\n        peg$literalExpectation(\"transport=\", true),\n        \"udp\",\n        peg$literalExpectation(\"udp\", true),\n        \"tcp\",\n        peg$literalExpectation(\"tcp\", true),\n        \"sctp\",\n        peg$literalExpectation(\"sctp\", true),\n        \"tls\",\n        peg$literalExpectation(\"tls\", true),\n        function(transport) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"transport\"] = transport.toLowerCase();\n        },\n        \"user=\",\n        peg$literalExpectation(\"user=\", true),\n        \"phone\",\n        peg$literalExpectation(\"phone\", true),\n        \"ip\",\n        peg$literalExpectation(\"ip\", true),\n        function(user) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"user\"] = user.toLowerCase();\n        },\n        \"method=\",\n        peg$literalExpectation(\"method=\", true),\n        function(method) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"method\"] = method;\n        },\n        \"ttl=\",\n        peg$literalExpectation(\"ttl=\", true),\n        function(ttl) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            options.data.params[\"ttl\"] = ttl;\n        },\n        \"maddr=\",\n        peg$literalExpectation(\"maddr=\", true),\n        function(maddr) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"maddr\"] = maddr;\n        },\n        \"lr\",\n        peg$literalExpectation(\"lr\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"lr\"] = undefined;\n        },\n        function(param, value) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            if (value === null) value = undefined;\n            else value = value[1];\n            options.data.uri_params[param.toLowerCase()] = value;\n        },\n        function(hname, hvalue) {\n            hname = hname.join(\"\").toLowerCase();\n            hvalue = hvalue.join(\"\");\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_headers) options.data.uri_headers = {};\n            if (!options.data.uri_headers[hname]) options.data.uri_headers[hname] = [\n                hvalue\n            ];\n            else options.data.uri_headers[hname].push(hvalue);\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            // lots of tests fail if this isn't guarded...\n            if (options.startRule === \"Refer_To\") {\n                options.data.uri = new (0, $dbdae61072997c03$export$9156e739aa33e19f)(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n                delete options.data.scheme;\n                delete options.data.user;\n                delete options.data.host;\n                delete options.data.host_type;\n                delete options.data.port;\n                delete options.data.uri_params;\n            }\n        },\n        \"//\",\n        peg$literalExpectation(\"//\", false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.scheme = text();\n        },\n        peg$literalExpectation(\"SIP\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.sip_version = text();\n        },\n        \"INVITE\",\n        peg$literalExpectation(\"INVITE\", false),\n        \"ACK\",\n        peg$literalExpectation(\"ACK\", false),\n        \"VXACH\",\n        peg$literalExpectation(\"VXACH\", false),\n        \"OPTIONS\",\n        peg$literalExpectation(\"OPTIONS\", false),\n        \"BYE\",\n        peg$literalExpectation(\"BYE\", false),\n        \"CANCEL\",\n        peg$literalExpectation(\"CANCEL\", false),\n        \"REGISTER\",\n        peg$literalExpectation(\"REGISTER\", false),\n        \"SUBSCRIBE\",\n        peg$literalExpectation(\"SUBSCRIBE\", false),\n        \"NOTIFY\",\n        peg$literalExpectation(\"NOTIFY\", false),\n        \"REFER\",\n        peg$literalExpectation(\"REFER\", false),\n        \"PUBLISH\",\n        peg$literalExpectation(\"PUBLISH\", false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.method = text();\n            return options.data.method;\n        },\n        function(status_code) {\n            options = options || {\n                data: {}\n            };\n            options.data.status_code = parseInt(status_code.join(\"\"));\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.reason_phrase = text();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = text();\n        },\n        function() {\n            var idx, length;\n            options = options || {\n                data: {}\n            };\n            length = options.data.multi_header.length;\n            for(idx = 0; idx < length; idx++)if (options.data.multi_header[idx].parsed === null) {\n                options.data = null;\n                break;\n            }\n            if (options.data !== null) options.data = options.data.multi_header;\n            else options.data = -1;\n        },\n        function() {\n            var header;\n            options = options || {\n                data: {}\n            };\n            if (!options.data.multi_header) options.data.multi_header = [];\n            try {\n                header = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            } catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({\n                \"position\": peg$currPos,\n                \"offset\": location().start.offset,\n                \"parsed\": header\n            });\n        },\n        function(displayName) {\n            displayName = text().trim();\n            if (displayName[0] === '\"') displayName = displayName.substring(1, displayName.length - 1);\n            options = options || {\n                data: {}\n            };\n            options.data.displayName = displayName;\n        },\n        \"q\",\n        peg$literalExpectation(\"q\", true),\n        function(q) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            options.data.params[\"q\"] = q;\n        },\n        \"expires\",\n        peg$literalExpectation(\"expires\", true),\n        function(expires) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            options.data.params[\"expires\"] = expires;\n        },\n        function(delta_seconds) {\n            return parseInt(delta_seconds.join(\"\"));\n        },\n        \"0\",\n        peg$literalExpectation(\"0\", false),\n        function() {\n            return parseFloat(text());\n        },\n        function(param, value) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            if (value === null) value = undefined;\n            else value = value[1];\n            options.data.params[param.toLowerCase()] = value;\n        },\n        \"render\",\n        peg$literalExpectation(\"render\", true),\n        \"session\",\n        peg$literalExpectation(\"session\", true),\n        \"icon\",\n        peg$literalExpectation(\"icon\", true),\n        \"alert\",\n        peg$literalExpectation(\"alert\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Content_Disposition\") options.data.type = text().toLowerCase();\n        },\n        \"handling\",\n        peg$literalExpectation(\"handling\", true),\n        \"optional\",\n        peg$literalExpectation(\"optional\", true),\n        \"required\",\n        peg$literalExpectation(\"required\", true),\n        function(length) {\n            options = options || {\n                data: {}\n            };\n            options.data = parseInt(length.join(\"\"));\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = text();\n        },\n        \"text\",\n        peg$literalExpectation(\"text\", true),\n        \"image\",\n        peg$literalExpectation(\"image\", true),\n        \"audio\",\n        peg$literalExpectation(\"audio\", true),\n        \"video\",\n        peg$literalExpectation(\"video\", true),\n        \"application\",\n        peg$literalExpectation(\"application\", true),\n        \"message\",\n        peg$literalExpectation(\"message\", true),\n        \"multipart\",\n        peg$literalExpectation(\"multipart\", true),\n        \"x-\",\n        peg$literalExpectation(\"x-\", true),\n        function(cseq_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.value = parseInt(cseq_value.join(\"\"));\n        },\n        function(expires) {\n            options = options || {\n                data: {}\n            };\n            options.data = expires;\n        },\n        function(event_type) {\n            options = options || {\n                data: {}\n            };\n            options.data.event = event_type.toLowerCase();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            var tag = options.data.tag;\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) options.data.setParam(\"tag\", tag);\n        },\n        \"tag\",\n        peg$literalExpectation(\"tag\", true),\n        function(tag) {\n            options = options || {\n                data: {}\n            };\n            options.data.tag = tag;\n        },\n        function(forwards) {\n            options = options || {\n                data: {}\n            };\n            options.data = parseInt(forwards.join(\"\"));\n        },\n        function(min_expires) {\n            options = options || {\n                data: {}\n            };\n            options.data = min_expires;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n        },\n        \"digest\",\n        peg$literalExpectation(\"Digest\", true),\n        \"realm\",\n        peg$literalExpectation(\"realm\", true),\n        function(realm) {\n            options = options || {\n                data: {}\n            };\n            options.data.realm = realm;\n        },\n        \"domain\",\n        peg$literalExpectation(\"domain\", true),\n        \"nonce\",\n        peg$literalExpectation(\"nonce\", true),\n        function(nonce) {\n            options = options || {\n                data: {}\n            };\n            options.data.nonce = nonce;\n        },\n        \"opaque\",\n        peg$literalExpectation(\"opaque\", true),\n        function(opaque) {\n            options = options || {\n                data: {}\n            };\n            options.data.opaque = opaque;\n        },\n        \"stale\",\n        peg$literalExpectation(\"stale\", true),\n        \"true\",\n        peg$literalExpectation(\"true\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.stale = true;\n        },\n        \"false\",\n        peg$literalExpectation(\"false\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.stale = false;\n        },\n        \"algorithm\",\n        peg$literalExpectation(\"algorithm\", true),\n        \"md5\",\n        peg$literalExpectation(\"MD5\", true),\n        \"md5-sess\",\n        peg$literalExpectation(\"MD5-sess\", true),\n        function(algorithm) {\n            options = options || {\n                data: {}\n            };\n            options.data.algorithm = algorithm.toUpperCase();\n        },\n        \"qop\",\n        peg$literalExpectation(\"qop\", true),\n        \"auth-int\",\n        peg$literalExpectation(\"auth-int\", true),\n        \"auth\",\n        peg$literalExpectation(\"auth\", true),\n        function(qop_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.qop || (options.data.qop = []);\n            options.data.qop.push(qop_value.toLowerCase());\n        },\n        function(rack_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.value = parseInt(rack_value.join(\"\"));\n        },\n        function() {\n            var idx, length;\n            options = options || {\n                data: {}\n            };\n            length = options.data.multi_header.length;\n            for(idx = 0; idx < length; idx++)if (options.data.multi_header[idx].parsed === null) {\n                options.data = null;\n                break;\n            }\n            if (options.data !== null) options.data = options.data.multi_header;\n            else options.data = -1;\n        },\n        function() {\n            var header;\n            options = options || {\n                data: {}\n            };\n            if (!options.data.multi_header) options.data.multi_header = [];\n            try {\n                header = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            } catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({\n                \"position\": peg$currPos,\n                \"offset\": location().start.offset,\n                \"parsed\": header\n            });\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            if (!(options.data.replaces_from_tag && options.data.replaces_to_tag)) options.data = -1;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = {\n                call_id: options.data\n            };\n        },\n        \"from-tag\",\n        peg$literalExpectation(\"from-tag\", true),\n        function(from_tag) {\n            options = options || {\n                data: {}\n            };\n            options.data.replaces_from_tag = from_tag;\n        },\n        \"to-tag\",\n        peg$literalExpectation(\"to-tag\", true),\n        function(to_tag) {\n            options = options || {\n                data: {}\n            };\n            options.data.replaces_to_tag = to_tag;\n        },\n        \"early-only\",\n        peg$literalExpectation(\"early-only\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.early_only = true;\n        },\n        function(head, r) {\n            return r;\n        },\n        function(head, tail) {\n            return list(head, tail);\n        },\n        function(value) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Require\") options.data = value || [];\n        },\n        function(rseq_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.value = parseInt(rseq_value.join(\"\"));\n        },\n        \"active\",\n        peg$literalExpectation(\"active\", true),\n        \"pending\",\n        peg$literalExpectation(\"pending\", true),\n        \"terminated\",\n        peg$literalExpectation(\"terminated\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.state = text();\n        },\n        \"reason\",\n        peg$literalExpectation(\"reason\", true),\n        function(reason) {\n            options = options || {\n                data: {}\n            };\n            if (typeof reason !== \"undefined\") options.data.reason = reason;\n        },\n        function(expires) {\n            options = options || {\n                data: {}\n            };\n            if (typeof expires !== \"undefined\") options.data.expires = expires;\n        },\n        \"retry_after\",\n        peg$literalExpectation(\"retry_after\", true),\n        function(retry_after) {\n            options = options || {\n                data: {}\n            };\n            if (typeof retry_after !== \"undefined\") options.data.retry_after = retry_after;\n        },\n        \"deactivated\",\n        peg$literalExpectation(\"deactivated\", true),\n        \"probation\",\n        peg$literalExpectation(\"probation\", true),\n        \"rejected\",\n        peg$literalExpectation(\"rejected\", true),\n        \"timeout\",\n        peg$literalExpectation(\"timeout\", true),\n        \"giveup\",\n        peg$literalExpectation(\"giveup\", true),\n        \"noresource\",\n        peg$literalExpectation(\"noresource\", true),\n        \"invariant\",\n        peg$literalExpectation(\"invariant\", true),\n        function(value) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Supported\") options.data = value || [];\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            var tag = options.data.tag;\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) options.data.setParam(\"tag\", tag);\n        },\n        \"ttl\",\n        peg$literalExpectation(\"ttl\", true),\n        function(via_ttl_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.ttl = via_ttl_value;\n        },\n        \"maddr\",\n        peg$literalExpectation(\"maddr\", true),\n        function(via_maddr) {\n            options = options || {\n                data: {}\n            };\n            options.data.maddr = via_maddr;\n        },\n        \"received\",\n        peg$literalExpectation(\"received\", true),\n        function(via_received) {\n            options = options || {\n                data: {}\n            };\n            options.data.received = via_received;\n        },\n        \"branch\",\n        peg$literalExpectation(\"branch\", true),\n        function(via_branch) {\n            options = options || {\n                data: {}\n            };\n            options.data.branch = via_branch;\n        },\n        \"rport\",\n        peg$literalExpectation(\"rport\", true),\n        function(response_port) {\n            options = options || {\n                data: {}\n            };\n            if (typeof response_port !== \"undefined\") options.data.rport = response_port.join(\"\");\n        },\n        function(via_protocol) {\n            options = options || {\n                data: {}\n            };\n            options.data.protocol = via_protocol;\n        },\n        peg$literalExpectation(\"UDP\", true),\n        peg$literalExpectation(\"TCP\", true),\n        peg$literalExpectation(\"TLS\", true),\n        peg$literalExpectation(\"SCTP\", true),\n        function(via_transport) {\n            options = options || {\n                data: {}\n            };\n            options.data.transport = via_transport;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host = text();\n        },\n        function(via_sent_by_port) {\n            options = options || {\n                data: {}\n            };\n            options.data.port = parseInt(via_sent_by_port.join(\"\"));\n        },\n        function(ttl) {\n            return parseInt(ttl.join(\"\"));\n        },\n        function(deltaSeconds) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Session_Expires\") options.data.deltaSeconds = deltaSeconds;\n        },\n        \"refresher\",\n        peg$literalExpectation(\"refresher\", false),\n        \"uas\",\n        peg$literalExpectation(\"uas\", false),\n        \"uac\",\n        peg$literalExpectation(\"uac\", false),\n        function(endpoint) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Session_Expires\") options.data.refresher = endpoint;\n        },\n        function(deltaSeconds) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Min_SE\") options.data = deltaSeconds;\n        },\n        \"stuns\",\n        peg$literalExpectation(\"stuns\", true),\n        \"stun\",\n        peg$literalExpectation(\"stun\", true),\n        function(scheme) {\n            options = options || {\n                data: {}\n            };\n            options.data.scheme = scheme;\n        },\n        function(host) {\n            options = options || {\n                data: {}\n            };\n            options.data.host = host;\n        },\n        \"?transport=\",\n        peg$literalExpectation(\"?transport=\", false),\n        \"turns\",\n        peg$literalExpectation(\"turns\", true),\n        \"turn\",\n        peg$literalExpectation(\"turn\", true),\n        function(transport) {\n            options = options || {\n                data: {}\n            };\n            options.data.transport = transport;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = text();\n        },\n        \"Referred-By\",\n        peg$literalExpectation(\"Referred-By\", false),\n        \"b\",\n        peg$literalExpectation(\"b\", false),\n        \"cid\",\n        peg$literalExpectation(\"cid\", false)\n    ];\n    const peg$bytecode = [\n        peg$decode('2 \"\"6 7!'),\n        peg$decode('4\"\"\"5!7#'),\n        peg$decode('4$\"\"5!7%'),\n        peg$decode('4&\"\"5!7\\''),\n        peg$decode(\";'.# &;(\"),\n        peg$decode('4(\"\"5!7)'),\n        peg$decode('4*\"\"5!7+'),\n        peg$decode('2,\"\"6,7-'),\n        peg$decode('2.\"\"6.7/'),\n        peg$decode('40\"\"5!71'),\n        peg$decode('22\"\"6273.\\x89 &24\"\"6475.} &26\"\"6677.q &28\"\"6879.e &2:\"\"6:7;.Y &2<\"\"6<7=.M &2>\"\"6>7?.A &2@\"\"6@7A.5 &2B\"\"6B7C.) &2D\"\"6D7E'),\n        peg$decode(\";).# &;,\"),\n        peg$decode('2F\"\"6F7G.} &2H\"\"6H7I.q &2J\"\"6J7K.e &2L\"\"6L7M.Y &2N\"\"6N7O.M &2P\"\"6P7Q.A &2R\"\"6R7S.5 &2T\"\"6T7U.) &2V\"\"6V7W'),\n        peg$decode('%%2X\"\"6X7Y/5#;#/,$;#/#$+#)(#\\'#(\"\\'#&\\'#/\"!&,)'),\n        peg$decode('%%$;$0#*;$&/,#; /#$+\")(\"\\'#&\\'#.\" &\"/=#$;$/&#0#*;$&&&#/\\'$8\":Z\" )(\"\\'#&\\'#'),\n        peg$decode(';..\" &\"'),\n        peg$decode(\"%$;'.# &;(0)*;'.# &;(&/?#28\\\"\\\"6879/0$;//'$8#:[# )(#'#(\\\"'#&'#\"),\n        peg$decode('%%$;2/&#0#*;2&&&#/g#$%$;.0#*;.&/,#;2/#$+\")(\"\\'#&\\'#0=*%$;.0#*;.&/,#;2/#$+\")(\"\\'#&\\'#&/#$+\")(\"\\'#&\\'#/\"!&,)'),\n        peg$decode('4\\\\\"\"5!7].# &;3'),\n        peg$decode('4^\"\"5!7_'),\n        peg$decode('4`\"\"5!7a'),\n        peg$decode(';!.) &4b\"\"5!7c'),\n        peg$decode('%$;).\\x95 &2F\"\"6F7G.\\x89 &2J\"\"6J7K.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O/\\x9e#0\\x9b*;).\\x95 &2F\"\"6F7G.\\x89 &2J\"\"6J7K.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O&&&#/\"!&,)'),\n        peg$decode('%$;).\\x89 &2F\"\"6F7G.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O/\\x92#0\\x8f*;).\\x89 &2F\"\"6F7G.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O&&&#/\"!&,)'),\n        peg$decode('2T\"\"6T7U.\\xe3 &2V\"\"6V7W.\\xd7 &2f\"\"6f7g.\\xcb &2h\"\"6h7i.\\xbf &2:\"\"6:7;.\\xb3 &2D\"\"6D7E.\\xa7 &22\"\"6273.\\x9b &28\"\"6879.\\x8f &2j\"\"6j7k.\\x83 &;&.} &24\"\"6475.q &2l\"\"6l7m.e &2n\"\"6n7o.Y &26\"\"6677.M &2>\"\"6>7?.A &2p\"\"6p7q.5 &2r\"\"6r7s.) &;\\'.# &;('),\n        peg$decode('%$;).\\u012B &2F\"\"6F7G.\\u011F &2J\"\"6J7K.\\u0113 &2L\"\"6L7M.\\u0107 &2X\"\"6X7Y.\\xfb &2P\"\"6P7Q.\\xef &2H\"\"6H7I.\\xe3 &2@\"\"6@7A.\\xd7 &2d\"\"6d7e.\\xcb &2R\"\"6R7S.\\xbf &2N\"\"6N7O.\\xb3 &2T\"\"6T7U.\\xa7 &2V\"\"6V7W.\\x9b &2f\"\"6f7g.\\x8f &2h\"\"6h7i.\\x83 &28\"\"6879.w &2j\"\"6j7k.k &;&.e &24\"\"6475.Y &2l\"\"6l7m.M &2n\"\"6n7o.A &26\"\"6677.5 &2p\"\"6p7q.) &2r\"\"6r7s/\\u0134#0\\u0131*;).\\u012B &2F\"\"6F7G.\\u011F &2J\"\"6J7K.\\u0113 &2L\"\"6L7M.\\u0107 &2X\"\"6X7Y.\\xfb &2P\"\"6P7Q.\\xef &2H\"\"6H7I.\\xe3 &2@\"\"6@7A.\\xd7 &2d\"\"6d7e.\\xcb &2R\"\"6R7S.\\xbf &2N\"\"6N7O.\\xb3 &2T\"\"6T7U.\\xa7 &2V\"\"6V7W.\\x9b &2f\"\"6f7g.\\x8f &2h\"\"6h7i.\\x83 &28\"\"6879.w &2j\"\"6j7k.k &;&.e &24\"\"6475.Y &2l\"\"6l7m.M &2n\"\"6n7o.A &26\"\"6677.5 &2p\"\"6p7q.) &2r\"\"6r7s&&&#/\"!&,)'),\n        peg$decode(\"%;//?#2P\\\"\\\"6P7Q/0$;//'$8#:t# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#24\\\"\\\"6475/0$;//'$8#:u# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2>\\\"\\\"6>7?/0$;//'$8#:v# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2T\\\"\\\"6T7U/0$;//'$8#:w# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2V\\\"\\\"6V7W/0$;//'$8#:x# )(#'#(\\\"'#&'#\"),\n        peg$decode('%2h\"\"6h7i/0#;//\\'$8\":y\" )(\"\\'#&\\'#'),\n        peg$decode('%;//6#2f\"\"6f7g/\\'$8\":z\" )(\"\\'#&\\'#'),\n        peg$decode(\"%;//?#2D\\\"\\\"6D7E/0$;//'$8#:{# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#22\\\"\\\"6273/0$;//'$8#:|# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#28\\\"\\\"6879/0$;//'$8#:}# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//0#;&/'$8\\\":~\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;&/0#;//'$8\\\":~\\\" )(\\\"'#&'#\"),\n        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parts: parts,\n            inverted: inverted,\n            ignoreCase: ignoreCase\n        };\n    }\n    function peg$anyExpectation() {\n        return {\n            type: \"any\"\n        };\n    }\n    function peg$endExpectation() {\n        return {\n            type: \"end\"\n        };\n    }\n    function peg$otherExpectation(description) {\n        return {\n            type: \"other\",\n            description: description\n        };\n    }\n    function peg$computePosDetails(pos) {\n        let details = peg$posDetailsCache[pos];\n        let p;\n        if (details) return details;\n        else {\n            p = pos - 1;\n            while(!peg$posDetailsCache[p])p--;\n            details = peg$posDetailsCache[p];\n            details = {\n                line: details.line,\n                column: details.column\n            };\n            while(p < pos){\n                if (input.charCodeAt(p) === 10) {\n                    details.line++;\n                    details.column = 1;\n                } else details.column++;\n                p++;\n            }\n            peg$posDetailsCache[pos] = details;\n            return details;\n        }\n    }\n    function peg$computeLocation(startPos, endPos) {\n        const startPosDetails = peg$computePosDetails(startPos);\n        const endPosDetails = peg$computePosDetails(endPos);\n        return {\n            source: peg$source,\n            start: {\n                offset: startPos,\n                line: startPosDetails.line,\n                column: startPosDetails.column\n            },\n            end: {\n                offset: endPos,\n                line: endPosDetails.line,\n                column: endPosDetails.column\n            }\n        };\n    }\n    function peg$fail(expected1) {\n        if (peg$currPos < peg$maxFailPos) return;\n        if (peg$currPos > peg$maxFailPos) {\n            peg$maxFailPos = peg$currPos;\n            peg$maxFailExpected = [];\n        }\n        peg$maxFailExpected.push(expected1);\n    }\n    function peg$buildSimpleError(message, location1) {\n        return new $c65620b741f6e224$export$f21cea08b0dd60e8(message, [], \"\", location1);\n    }\n    function peg$buildStructuredError(expected1, found, location1) {\n        return new $c65620b741f6e224$export$f21cea08b0dd60e8($c65620b741f6e224$export$f21cea08b0dd60e8.buildMessage(expected1, found), expected1, found, location1);\n    }\n    function peg$decode(s) {\n        return s.split(\"\").map((ch)=>ch.charCodeAt(0) - 32);\n    }\n    function peg$parseRule(index) {\n        const bc = peg$bytecode[index];\n        let ip = 0;\n        const ips = [];\n        let end = bc.length;\n        const ends = [];\n        const stack = [];\n        let params;\n        while(true){\n            while(ip < end)switch(bc[ip]){\n                case 0:\n                    stack.push(peg$consts[bc[ip + 1]]);\n                    ip += 2;\n                    break;\n                case 1:\n                    stack.push(undefined);\n                    ip++;\n                    break;\n                case 2:\n                    stack.push(null);\n                    ip++;\n                    break;\n                case 3:\n                    stack.push(peg$FAILED);\n                    ip++;\n                    break;\n                case 4:\n                    stack.push([]);\n                    ip++;\n                    break;\n                case 5:\n                    stack.push(peg$currPos);\n                    ip++;\n                    break;\n                case 6:\n                    stack.pop();\n                    ip++;\n                    break;\n                case 7:\n                    peg$currPos = stack.pop();\n                    ip++;\n                    break;\n                case 8:\n                    stack.length -= bc[ip + 1];\n                    ip += 2;\n                    break;\n                case 9:\n                    stack.splice(-2, 1);\n                    ip++;\n                    break;\n                case 10:\n                    stack[stack.length - 2].push(stack.pop());\n                    ip++;\n                    break;\n                case 11:\n                    stack.push(stack.splice(stack.length - bc[ip + 1], bc[ip + 1]));\n                    ip += 2;\n                    break;\n                case 12:\n                    stack.push(input.substring(stack.pop(), peg$currPos));\n                    ip++;\n                    break;\n                case 13:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (stack[stack.length - 1]) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 14:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (stack[stack.length - 1] === peg$FAILED) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 15:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (stack[stack.length - 1] !== peg$FAILED) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 16:\n                    if (stack[stack.length - 1] !== peg$FAILED) {\n                        ends.push(end);\n                        ips.push(ip);\n                        end = ip + 2 + bc[ip + 1];\n                        ip += 2;\n                    } else ip += 2 + bc[ip + 1];\n                    break;\n                case 17:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (input.length > peg$currPos) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 18:\n                    ends.push(end);\n                    ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                    if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length) === peg$consts[bc[ip + 1]]) {\n                        end = ip + 4 + bc[ip + 2];\n                        ip += 4;\n                    } else {\n                        end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                        ip += 4 + bc[ip + 2];\n                    }\n                    break;\n                case 19:\n                    ends.push(end);\n                    ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                    if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length).toLowerCase() === peg$consts[bc[ip + 1]]) {\n                        end = ip + 4 + bc[ip + 2];\n                        ip += 4;\n                    } else {\n                        end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                        ip += 4 + bc[ip + 2];\n                    }\n                    break;\n                case 20:\n                    ends.push(end);\n                    ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                    if (peg$consts[bc[ip + 1]].test(input.charAt(peg$currPos))) {\n                        end = ip + 4 + bc[ip + 2];\n                        ip += 4;\n                    } else {\n                        end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                        ip += 4 + bc[ip + 2];\n                    }\n                    break;\n                case 21:\n                    stack.push(input.substr(peg$currPos, bc[ip + 1]));\n                    peg$currPos += bc[ip + 1];\n                    ip += 2;\n                    break;\n                case 22:\n                    stack.push(peg$consts[bc[ip + 1]]);\n                    peg$currPos += peg$consts[bc[ip + 1]].length;\n                    ip += 2;\n                    break;\n                case 23:\n                    stack.push(peg$FAILED);\n                    if (peg$silentFails === 0) peg$fail(peg$consts[bc[ip + 1]]);\n                    ip += 2;\n                    break;\n                case 24:\n                    peg$savedPos = stack[stack.length - 1 - bc[ip + 1]];\n                    ip += 2;\n                    break;\n                case 25:\n                    peg$savedPos = peg$currPos;\n                    ip++;\n                    break;\n                case 26:\n                    params = bc.slice(ip + 4, ip + 4 + bc[ip + 3]).map(function(p) {\n                        return stack[stack.length - 1 - p];\n                    });\n                    stack.splice(stack.length - bc[ip + 2], bc[ip + 2], peg$consts[bc[ip + 1]].apply(null, params));\n                    ip += 4 + bc[ip + 3];\n                    break;\n                case 27:\n                    stack.push(peg$parseRule(bc[ip + 1]));\n                    ip += 2;\n                    break;\n                case 28:\n                    peg$silentFails++;\n                    ip++;\n                    break;\n                case 29:\n                    peg$silentFails--;\n                    ip++;\n                    break;\n                default:\n                    throw new Error(\"Invalid opcode: \" + bc[ip] + \".\");\n            }\n            if (ends.length > 0) {\n                end = ends.pop();\n                ip = ips.pop();\n            } else break;\n        }\n        return stack[0];\n    }\n    options.data = {}; // Object to which header attributes will be assigned during parsing\n    function list(head, tail) {\n        return [\n            head\n        ].concat(tail);\n    }\n    peg$result = peg$parseRule(peg$startRuleIndex);\n    if (peg$result !== peg$FAILED && peg$currPos === input.length) return peg$result;\n    else {\n        if (peg$result !== peg$FAILED && peg$currPos < input.length) peg$fail(peg$endExpectation());\n        throw peg$buildStructuredError(peg$maxFailExpected, peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null, peg$maxFailPos < input.length ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1) : peg$computeLocation(peg$maxFailPos, peg$maxFailPos));\n    }\n}\nconst $c65620b741f6e224$export$98e6a39c04603d36 = $c65620b741f6e224$var$peg$parse;\n\n\nvar $dd77ce08b7a88b80$export$553a52f18b21505e;\n(function(Grammar) {\n    /**\n     * Parse.\n     * @param input -\n     * @param startRule -\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function parse(input, startRule) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const options = {\n            startRule: startRule\n        };\n        try {\n            $c65620b741f6e224$export$98e6a39c04603d36(input, options);\n        } catch (e) {\n            options.data = -1;\n        }\n        return options.data;\n    }\n    Grammar.parse = parse;\n    /**\n     * Parse the given string and returns a SIP.NameAddrHeader instance or undefined if\n     * it is an invalid NameAddrHeader.\n     * @param name_addr_header -\n     */ function nameAddrHeaderParse(nameAddrHeader) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedNameAddrHeader = Grammar.parse(nameAddrHeader, \"Name_Addr_Header\");\n        return parsedNameAddrHeader !== -1 ? parsedNameAddrHeader : undefined;\n    }\n    Grammar.nameAddrHeaderParse = nameAddrHeaderParse;\n    /**\n     * Parse the given string and returns a SIP.URI instance or undefined if\n     * it is an invalid URI.\n     * @param uri -\n     */ function URIParse(uri) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedUri = Grammar.parse(uri, \"SIP_URI\");\n        return parsedUri !== -1 ? parsedUri : undefined;\n    }\n    Grammar.URIParse = URIParse;\n})($dd77ce08b7a88b80$export$553a52f18b21505e = $dd77ce08b7a88b80$export$553a52f18b21505e || ($dd77ce08b7a88b80$export$553a52f18b21505e = {}));\n\n\n\n/**\n * SIP Response Reasons\n * DOC: http://www.iana.org/assignments/sip-parameters\n * @internal\n */ const $9ef5a4825b23ca0b$var$REASON_PHRASE = {\n    100: \"Trying\",\n    180: \"Ringing\",\n    181: \"Call Is Being Forwarded\",\n    182: \"Queued\",\n    183: \"Session Progress\",\n    199: \"Early Dialog Terminated\",\n    200: \"OK\",\n    202: \"Accepted\",\n    204: \"No Notification\",\n    300: \"Multiple Choices\",\n    301: \"Moved Permanently\",\n    302: \"Moved Temporarily\",\n    305: \"Use Proxy\",\n    380: \"Alternative Service\",\n    400: \"Bad Request\",\n    401: \"Unauthorized\",\n    402: \"Payment Required\",\n    403: \"Forbidden\",\n    404: \"Not Found\",\n    405: \"Method Not Allowed\",\n    406: \"Not Acceptable\",\n    407: \"Proxy Authentication Required\",\n    408: \"Request Timeout\",\n    410: \"Gone\",\n    412: \"Conditional Request Failed\",\n    413: \"Request Entity Too Large\",\n    414: \"Request-URI Too Long\",\n    415: \"Unsupported Media Type\",\n    416: \"Unsupported URI Scheme\",\n    417: \"Unknown Resource-Priority\",\n    420: \"Bad Extension\",\n    421: \"Extension Required\",\n    422: \"Session Interval Too Small\",\n    423: \"Interval Too Brief\",\n    428: \"Use Identity Header\",\n    429: \"Provide Referrer Identity\",\n    430: \"Flow Failed\",\n    433: \"Anonymity Disallowed\",\n    436: \"Bad Identity-Info\",\n    437: \"Unsupported Certificate\",\n    438: \"Invalid Identity Header\",\n    439: \"First Hop Lacks Outbound Support\",\n    440: \"Max-Breadth Exceeded\",\n    469: \"Bad Info Package\",\n    470: \"Consent Needed\",\n    478: \"Unresolvable Destination\",\n    480: \"Temporarily Unavailable\",\n    481: \"Call/Transaction Does Not Exist\",\n    482: \"Loop Detected\",\n    483: \"Too Many Hops\",\n    484: \"Address Incomplete\",\n    485: \"Ambiguous\",\n    486: \"Busy Here\",\n    487: \"Request Terminated\",\n    488: \"Not Acceptable Here\",\n    489: \"Bad Event\",\n    491: \"Request Pending\",\n    493: \"Undecipherable\",\n    494: \"Security Agreement Required\",\n    500: \"Internal Server Error\",\n    501: \"Not Implemented\",\n    502: \"Bad Gateway\",\n    503: \"Service Unavailable\",\n    504: \"Server Time-out\",\n    505: \"Version Not Supported\",\n    513: \"Message Too Large\",\n    580: \"Precondition Failure\",\n    600: \"Busy Everywhere\",\n    603: \"Decline\",\n    604: \"Does Not Exist Anywhere\",\n    606: \"Not Acceptable\"\n};\nfunction $9ef5a4825b23ca0b$export$8ade8bb6be9659e6(size, base = 32) {\n    let token = \"\";\n    for(let i = 0; i < size; i++){\n        const r = Math.floor(Math.random() * base);\n        token += r.toString(base);\n    }\n    return token;\n}\nfunction $9ef5a4825b23ca0b$export$91293bff868a9015(code) {\n    return $9ef5a4825b23ca0b$var$REASON_PHRASE[code] || \"\";\n}\nfunction $9ef5a4825b23ca0b$export$810aab6c3b803abf() {\n    return $9ef5a4825b23ca0b$export$8ade8bb6be9659e6(10);\n}\nfunction $9ef5a4825b23ca0b$export$13418308177929fa(str) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const exceptions = {\n        \"Call-Id\": \"Call-ID\",\n        Cseq: \"CSeq\",\n        \"Min-Se\": \"Min-SE\",\n        Rack: \"RAck\",\n        Rseq: \"RSeq\",\n        \"Www-Authenticate\": \"WWW-Authenticate\"\n    };\n    const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n    const parts = name.length;\n    let hname = \"\";\n    for(let part = 0; part < parts; part++){\n        if (part !== 0) hname += \"-\";\n        hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n    }\n    if (exceptions[hname]) hname = exceptions[hname];\n    return hname;\n}\nfunction $9ef5a4825b23ca0b$export$35c75c636a5e80e5(str) {\n    return encodeURIComponent(str).replace(/%[A-F\\d]{2}/g, \"U\").length;\n}\n\n\nclass $2a69815b850249a6$export$9d4333345ffa4fd6 {\n    constructor(){\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.headers = {};\n    }\n    /**\n     * Insert a header of the given name and value into the last position of the\n     * header array.\n     * @param name - header name\n     * @param value - header value\n     */ addHeader(name, value) {\n        const header = {\n            raw: value\n        };\n        name = (0, $9ef5a4825b23ca0b$export$13418308177929fa)(name);\n        if (this.headers[name]) this.headers[name].push(header);\n        else this.headers[name] = [\n            header\n        ];\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */ getHeader(name) {\n        const header = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        if (header) {\n            if (header[0]) return header[0].raw;\n        } else return;\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array - with all the headers of the specified name.\n     */ getHeaders(name) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const header = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        const result = [];\n        if (!header) return [];\n        for (const headerPart of header)result.push(headerPart.raw);\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */ hasHeader(name) {\n        return !!this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n    }\n    /**\n     * Parse the given header on the given index.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    parseHeader(name, idx = 0) {\n        name = (0, $9ef5a4825b23ca0b$export$13418308177929fa)(name);\n        if (!this.headers[name]) // this.logger.log(\"header '\" + name + \"' not present\");\n        return;\n        else if (idx >= this.headers[name].length) // this.logger.log(\"not so many '\" + name + \"' headers present\");\n        return;\n        const header = this.headers[name][idx];\n        const value = header.raw;\n        if (header.parsed) return header.parsed;\n        // substitute '-' by '_' for grammar rule matching.\n        const parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(value, name.replace(/-/g, \"_\"));\n        if (parsed === -1) {\n            this.headers[name].splice(idx, 1); // delete from headers\n            // this.logger.warn('error parsing \"' + name + '\" header field with value \"' + value + '\"');\n            return;\n        } else {\n            header.parsed = parsed;\n            return parsed;\n        }\n    }\n    /**\n     * Message Header attribute selector. Alias of parseHeader.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     *\n     * @example\n     * message.s('via',3).port\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    s(name, idx = 0) {\n        return this.parseHeader(name, idx);\n    }\n    /**\n     * Replace the value of the given header by the value.\n     * @param name - header name\n     * @param value - header value\n     */ setHeader(name, value) {\n        this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)] = [\n            {\n                raw: value\n            }\n        ];\n    }\n    toString() {\n        return this.data;\n    }\n}\n\n\nclass $36a488a350db25b8$export$b03b8011240de09c extends (0, $2a69815b850249a6$export$9d4333345ffa4fd6) {\n    constructor(){\n        super();\n    }\n}\n\n\n\nclass $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc extends (0, $2a69815b850249a6$export$9d4333345ffa4fd6) {\n    constructor(){\n        super();\n    }\n}\n\n\n\n\nclass $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3 {\n    constructor(method, ruri, fromURI, toURI, options, extraHeaders, body){\n        this.headers = {};\n        this.extraHeaders = [];\n        // Initialize default options\n        this.options = $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3.getDefaultOptions();\n        // Options - merge a deep copy\n        if (options) {\n            this.options = Object.assign(Object.assign({}, this.options), options);\n            if (this.options.optionTags && this.options.optionTags.length) this.options.optionTags = this.options.optionTags.slice();\n            if (this.options.routeSet && this.options.routeSet.length) this.options.routeSet = this.options.routeSet.slice();\n        }\n        // Extra headers - deep copy\n        if (extraHeaders && extraHeaders.length) this.extraHeaders = extraHeaders.slice();\n        // Body - deep copy\n        if (body) // TODO: internal representation should be Body\n        // this.body = { ...body };\n        this.body = {\n            body: body.content,\n            contentType: body.contentType\n        };\n        // Method\n        this.method = method;\n        // RURI\n        this.ruri = ruri.clone();\n        // From\n        this.fromURI = fromURI.clone();\n        this.fromTag = this.options.fromTag ? this.options.fromTag : (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)();\n        this.from = $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3.makeNameAddrHeader(this.fromURI, this.options.fromDisplayName, this.fromTag);\n        // To\n        this.toURI = toURI.clone();\n        this.toTag = this.options.toTag;\n        this.to = $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3.makeNameAddrHeader(this.toURI, this.options.toDisplayName, this.toTag);\n        // Call-ID\n        this.callId = this.options.callId ? this.options.callId : this.options.callIdPrefix + (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(15);\n        // CSeq\n        this.cseq = this.options.cseq;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        this.setHeader(\"route\", this.options.routeSet);\n        this.setHeader(\"via\", \"\");\n        this.setHeader(\"to\", this.to.toString());\n        this.setHeader(\"from\", this.from.toString());\n        this.setHeader(\"cseq\", this.cseq + \" \" + this.method);\n        this.setHeader(\"call-id\", this.callId);\n        this.setHeader(\"max-forwards\", \"70\");\n    }\n    /** Get a copy of the default options. */ static getDefaultOptions() {\n        return {\n            callId: \"\",\n            callIdPrefix: \"\",\n            cseq: 1,\n            toDisplayName: \"\",\n            toTag: \"\",\n            fromDisplayName: \"\",\n            fromTag: \"\",\n            forceRport: false,\n            hackViaTcp: false,\n            optionTags: [\n                \"outbound\"\n            ],\n            routeSet: [],\n            userAgentString: \"sip.js\",\n            viaHost: \"\"\n        };\n    }\n    static makeNameAddrHeader(uri, displayName, tag) {\n        const parameters = {};\n        if (tag) parameters.tag = tag;\n        return new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(uri, displayName, parameters);\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */ getHeader(name) {\n        const header = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        if (header) {\n            if (header[0]) return header[0];\n        } else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders){\n                if (regexp.test(exHeader)) return exHeader.substring(exHeader.indexOf(\":\") + 1).trim();\n            }\n        }\n        return;\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array with all the headers of the specified name.\n     */ getHeaders(name) {\n        const result = [];\n        const headerArray = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        if (headerArray) for (const headerPart of headerArray)result.push(headerPart);\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders)if (regexp.test(exHeader)) result.push(exHeader.substring(exHeader.indexOf(\":\") + 1).trim());\n        }\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */ hasHeader(name) {\n        if (this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)]) return true;\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const extraHeader of this.extraHeaders){\n                if (regexp.test(extraHeader)) return true;\n            }\n        }\n        return false;\n    }\n    /**\n     * Replace the the given header by the given value.\n     * @param name - header name\n     * @param value - header value\n     */ setHeader(name, value) {\n        this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)] = value instanceof Array ? value : [\n            value\n        ];\n    }\n    /**\n     * The Via header field indicates the transport used for the transaction\n     * and identifies the location where the response is to be sent.  A Via\n     * header field value is added only after the transport that will be\n     * used to reach the next hop has been selected (which may involve the\n     * usage of the procedures in [4]).\n     *\n     * When the UAC creates a request, it MUST insert a Via into that\n     * request.  The protocol name and protocol version in the header field\n     * MUST be SIP and 2.0, respectively.  The Via header field value MUST\n     * contain a branch parameter.  This parameter is used to identify the\n     * transaction created by that request.  This parameter is used by both\n     * the client and the server.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n     * @param branchParameter - The branch parameter.\n     * @param transport - The sent protocol transport.\n     */ setViaHeader(branch, transport) {\n        // FIXME: Hack\n        if (this.options.hackViaTcp) transport = \"TCP\";\n        let via = \"SIP/2.0/\" + transport;\n        via += \" \" + this.options.viaHost + \";branch=\" + branch;\n        if (this.options.forceRport) via += \";rport\";\n        this.setHeader(\"via\", via);\n        this.branch = branch;\n    }\n    toString() {\n        let msg = \"\";\n        msg += this.method + \" \" + this.ruri.toRaw() + \" SIP/2.0\\r\\n\";\n        for(const header in this.headers){\n            if (this.headers[header]) for (const headerPart of this.headers[header])msg += header + \": \" + headerPart + \"\\r\\n\";\n        }\n        for (const header of this.extraHeaders)msg += header.trim() + \"\\r\\n\";\n        msg += \"Supported: \" + this.options.optionTags.join(\", \") + \"\\r\\n\";\n        msg += \"User-Agent: \" + this.options.userAgentString + \"\\r\\n\";\n        if (this.body) {\n            if (typeof this.body === \"string\") {\n                msg += \"Content-Length: \" + (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(this.body) + \"\\r\\n\\r\\n\";\n                msg += this.body;\n            } else if (this.body.body && this.body.contentType) {\n                msg += \"Content-Type: \" + this.body.contentType + \"\\r\\n\";\n                msg += \"Content-Length: \" + (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(this.body.body) + \"\\r\\n\\r\\n\";\n                msg += this.body.body;\n            } else msg += \"Content-Length: 0\\r\\n\\r\\n\";\n        } else msg += \"Content-Length: 0\\r\\n\\r\\n\";\n        return msg;\n    }\n}\n\n\n// If the Content-Disposition header field is missing, bodies of\n// Content-Type application/sdp imply the disposition \"session\", while\n// other content types imply \"render\".\n// https://tools.ietf.org/html/rfc3261#section-13.2.1\nfunction $35e2f96fad41499f$var$contentTypeToContentDisposition(contentType) {\n    if (contentType === \"application/sdp\") return \"session\";\n    else return \"render\";\n}\nfunction $35e2f96fad41499f$export$46b123b754f2f425(bodyLegacy) {\n    const content = typeof bodyLegacy === \"string\" ? bodyLegacy : bodyLegacy.body;\n    const contentType = typeof bodyLegacy === \"string\" ? \"application/sdp\" : bodyLegacy.contentType;\n    const contentDisposition = $35e2f96fad41499f$var$contentTypeToContentDisposition(contentType);\n    const body = {\n        contentDisposition: contentDisposition,\n        contentType: contentType,\n        content: content\n    };\n    return body;\n}\nfunction $35e2f96fad41499f$export$540dbd453ede1ce3(body) {\n    return body && typeof body.content === \"string\" && typeof body.contentType === \"string\" && body.contentDisposition === undefined ? true : typeof body.contentDisposition === \"string\";\n}\nfunction $35e2f96fad41499f$export$135b49d4bc2964c6(message) {\n    let contentDisposition;\n    let contentType;\n    let content;\n    // We're in UAS role, receiving incoming request\n    if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, receiving incoming response\n    if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, sending outgoing request\n    if (message instanceof (0, $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3)) {\n        if (message.body) {\n            contentDisposition = message.getHeader(\"Content-Disposition\");\n            contentType = message.getHeader(\"Content-Type\");\n            if (typeof message.body === \"string\") {\n                // FIXME: OutgoingRequest should not allow a \"string\" body without a \"Content-Type\" header.\n                if (!contentType) throw new Error(\"Header content type header does not equal body content type.\");\n                content = message.body;\n            } else {\n                // FIXME: OutgoingRequest should not allow the \"Content-Type\" header not to match th body content type\n                if (contentType && contentType !== message.body.contentType) throw new Error(\"Header content type header does not equal body content type.\");\n                contentType = message.body.contentType;\n                content = message.body.body;\n            }\n        }\n    }\n    // We're in UAS role, sending outgoing response\n    if ($35e2f96fad41499f$export$540dbd453ede1ce3(message)) {\n        contentDisposition = message.contentDisposition;\n        contentType = message.contentType;\n        content = message.content;\n    }\n    // No content, no body.\n    if (!content) return undefined;\n    if (contentType && !contentDisposition) contentDisposition = $35e2f96fad41499f$var$contentTypeToContentDisposition(contentType);\n    if (!contentDisposition) throw new Error(\"Content disposition undefined.\");\n    if (!contentType) throw new Error(\"Content type undefined.\");\n    return {\n        contentDisposition: contentDisposition,\n        contentType: contentType,\n        content: content\n    };\n}\n\n\n/**\n * Session state.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-13\n * @public\n */ var $12c24789242f875e$export$84bf1aca7aacb716;\n(function(SessionState) {\n    SessionState[\"Initial\"] = \"Initial\";\n    SessionState[\"Early\"] = \"Early\";\n    SessionState[\"AckWait\"] = \"AckWait\";\n    SessionState[\"Confirmed\"] = \"Confirmed\";\n    SessionState[\"Terminated\"] = \"Terminated\";\n})($12c24789242f875e$export$84bf1aca7aacb716 = $12c24789242f875e$export$84bf1aca7aacb716 || ($12c24789242f875e$export$84bf1aca7aacb716 = {}));\nvar $12c24789242f875e$export$8cb9fe9f0b3bb1c7;\n(function(SignalingState) {\n    SignalingState[\"Initial\"] = \"Initial\";\n    SignalingState[\"HaveLocalOffer\"] = \"HaveLocalOffer\";\n    SignalingState[\"HaveRemoteOffer\"] = \"HaveRemoteOffer\";\n    SignalingState[\"Stable\"] = \"Stable\";\n    SignalingState[\"Closed\"] = \"Closed\";\n})($12c24789242f875e$export$8cb9fe9f0b3bb1c7 = $12c24789242f875e$export$8cb9fe9f0b3bb1c7 || ($12c24789242f875e$export$8cb9fe9f0b3bb1c7 = {}));\n\n\nconst $d9c671393334589e$var$T1 = 500;\nconst $d9c671393334589e$var$T2 = 4000;\nconst $d9c671393334589e$var$T4 = 5000;\nconst $d9c671393334589e$export$8bb2c1fb2b1765a9 = {\n    T1: $d9c671393334589e$var$T1,\n    T2: $d9c671393334589e$var$T2,\n    T4: $d9c671393334589e$var$T4,\n    TIMER_B: 64 * $d9c671393334589e$var$T1,\n    TIMER_D: 0 * $d9c671393334589e$var$T1,\n    TIMER_F: 64 * $d9c671393334589e$var$T1,\n    TIMER_H: 64 * $d9c671393334589e$var$T1,\n    TIMER_I: 0 * $d9c671393334589e$var$T4,\n    TIMER_J: 0 * $d9c671393334589e$var$T1,\n    TIMER_K: 0 * $d9c671393334589e$var$T4,\n    TIMER_L: 64 * $d9c671393334589e$var$T1,\n    TIMER_M: 64 * $d9c671393334589e$var$T1,\n    TIMER_N: 64 * $d9c671393334589e$var$T1,\n    PROVISIONAL_RESPONSE_INTERVAL: 60000 // See RFC 3261 Section 13.3.1.1\n};\n\n\n/**\n * An Exception is considered a condition that a reasonable application may wish to catch.\n * An Error indicates serious problems that a reasonable application should not try to catch.\n * @public\n */ class $a1cbd1d3dcba43ab$export$e2f174de097e0bcd extends Error {\n    constructor(message){\n        super(message); // 'Error' breaks prototype chain here\n        Object.setPrototypeOf(this, new.target.prototype); // restore prototype chain\n    }\n}\n\n\nclass $507bd02c449dbf58$export$c030d241ccd2f0c6 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Transaction state error.\");\n    }\n}\n\n\n\n/**\n * A request to reject an {@link Invitation} (incoming CANCEL).\n * @public\n */ class $24df438dfb566a5a$export$848c9b7ead0df967 {\n    /** @internal */ constructor(incomingCancelRequest){\n        this.incomingCancelRequest = incomingCancelRequest;\n    }\n    /** Incoming CANCEL request message. */ get request() {\n        return this.incomingCancelRequest;\n    }\n}\n\n\n\nclass $9bf0273360d9374b$export$9057181257c3c72f extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Unsupported content type.\");\n    }\n}\n\n\n\nclass $2f6becfc657677bb$export$371a565fed7d7f84 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Unspecified session description handler error.\");\n    }\n}\n\n\n\nclass $49bb337e8869494e$export$3f32b591920dbfba extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(){\n        super(\"The session has terminated.\");\n    }\n}\n\n\n\n\n\n\n\n/* eslint-disable @typescript-eslint/no-namespace */ /**\n * SIP Methods\n * @internal\n */ var $ea4e4d873ec3240b$export$e7094788287c5e9b;\n(function(C) {\n    C.ACK = \"ACK\";\n    C.BYE = \"BYE\";\n    C.CANCEL = \"CANCEL\";\n    C.INFO = \"INFO\";\n    C.INVITE = \"INVITE\";\n    C.MESSAGE = \"MESSAGE\";\n    C.NOTIFY = \"NOTIFY\";\n    C.OPTIONS = \"OPTIONS\";\n    C.REGISTER = \"REGISTER\";\n    C.UPDATE = \"UPDATE\";\n    C.SUBSCRIBE = \"SUBSCRIBE\";\n    C.PUBLISH = \"PUBLISH\";\n    C.REFER = \"REFER\";\n    C.PRACK = \"PRACK\";\n})($ea4e4d873ec3240b$export$e7094788287c5e9b = $ea4e4d873ec3240b$export$e7094788287c5e9b || ($ea4e4d873ec3240b$export$e7094788287c5e9b = {}));\n\n\nconst $4619cb33ea8b9a88$export$adbfd46aa14386de = [\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).OPTIONS,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PRACK,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).SUBSCRIBE\n];\n\n\n/**\n * A request to confirm a {@link Session} (incoming ACK).\n * @public\n */ class $56b90c466b43873c$export$a0eb6f8226b214ab {\n    /** @internal */ constructor(incomingAckRequest){\n        this.incomingAckRequest = incomingAckRequest;\n    }\n    /** Incoming ACK request message. */ get request() {\n        return this.incomingAckRequest.message;\n    }\n}\n\n\n/**\n * A request to end a {@link Session} (incoming BYE).\n * @public\n */ class $d5afbbeee4be05d2$export$1030969e2d8a99b {\n    /** @internal */ constructor(incomingByeRequest){\n        this.incomingByeRequest = incomingByeRequest;\n    }\n    /** Incoming BYE request message. */ get request() {\n        return this.incomingByeRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingByeRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingByeRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n/**\n * An {@link Emitter} implementation.\n * @internal\n */ class $3f66d713440d295c$export$765f30f7b0920a6c {\n    constructor(){\n        this.listeners = new Array();\n    }\n    /**\n     * Sets up a function that will be called whenever the target changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */ addListener(listener, options) {\n        const onceWrapper = (data)=>{\n            this.removeListener(onceWrapper);\n            listener(data);\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * Emit change.\n     * @param data - Data to emit.\n     */ emit(data) {\n        this.listeners.slice().forEach((listener)=>listener(data));\n    }\n    /**\n     * Removes all listeners previously registered with addListener.\n     */ removeAllListeners() {\n        this.listeners = [];\n    }\n    /**\n     * Removes a listener previously registered with addListener.\n     * @param listener - Callback function.\n     */ removeListener(listener) {\n        this.listeners = this.listeners.filter((l)=>l !== listener);\n    }\n    /**\n     * Registers a listener.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */ on(listener) {\n        return this.addListener(listener);\n    }\n    /**\n     * Unregisters a listener.\n     * @param listener - Callback function.\n     * @deprecated Use removeListener.\n     */ off(listener) {\n        return this.removeListener(listener);\n    }\n    /**\n     * Registers a listener then unregisters the listener after one event emission.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */ once(listener) {\n        return this.addListener(listener, {\n            once: true\n        });\n    }\n}\n\n\n\n\nclass $92ef9568286e94e7$export$83a8f2b4495394c4 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    /** @internal */ constructor(message){\n        super(message ? message : \"Request pending.\");\n    }\n}\n\n\n/**\n * An exchange of information (incoming INFO).\n * @public\n */ class $ca92780e96cf59eb$export$c4868e4a24d48fad {\n    /** @internal */ constructor(incomingInfoRequest){\n        this.incomingInfoRequest = incomingInfoRequest;\n    }\n    /** Incoming MESSAGE request message. */ get request() {\n        return this.incomingInfoRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingInfoRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingInfoRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n/**\n * A received message (incoming MESSAGE).\n * @public\n */ class $031801d494727803$export$f69c19e57285b83a {\n    /** @internal */ constructor(incomingMessageRequest){\n        this.incomingMessageRequest = incomingMessageRequest;\n    }\n    /** Incoming MESSAGE request message. */ get request() {\n        return this.incomingMessageRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingMessageRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingMessageRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n/**\n * A notification of an event (incoming NOTIFY).\n * @public\n */ class $305e86db02d77018$export$14834abbfce3b8cd {\n    /** @internal */ constructor(incomingNotifyRequest){\n        this.incomingNotifyRequest = incomingNotifyRequest;\n    }\n    /** Incoming NOTIFY request message. */ get request() {\n        return this.incomingNotifyRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingNotifyRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingNotifyRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n\nclass $785325132a53fe8a$export$85b1ddd8f58e2bc1 {\n    /** @internal */ constructor(incomingReferRequest, session){\n        this.incomingReferRequest = incomingReferRequest;\n        this.session = session;\n    }\n    get referTo() {\n        const referTo = this.incomingReferRequest.message.parseHeader(\"refer-to\");\n        if (!(referTo instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Failed to parse Refer-To header.\");\n        return referTo;\n    }\n    get referredBy() {\n        return this.incomingReferRequest.message.getHeader(\"referred-by\");\n    }\n    get replaces() {\n        const value = this.referTo.uri.getHeader(\"replaces\");\n        if (value instanceof Array) return value[0];\n        return value;\n    }\n    /** Incoming REFER request message. */ get request() {\n        return this.incomingReferRequest.message;\n    }\n    /** Accept the request. */ accept(options = {\n        statusCode: 202\n    }) {\n        this.incomingReferRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingReferRequest.reject(options);\n        return Promise.resolve();\n    }\n    /**\n     * Creates an inviter which may be used to send an out of dialog INVITE request.\n     *\n     * @remarks\n     * This a helper method to create an Inviter which will execute the referral\n     * of the `Session` which was referred. The appropriate headers are set and\n     * the referred `Session` is linked to the new `Session`. Note that only a\n     * single instance of the `Inviter` will be created and returned (if called\n     * more than once a reference to the same `Inviter` will be returned every time).\n     *\n     * @param options - Options bucket.\n     * @param modifiers - Session description handler modifiers.\n     */ makeInviter(options) {\n        if (this.inviter) return this.inviter;\n        const targetURI = this.referTo.uri.clone();\n        targetURI.clearHeaders();\n        options = options || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const replaces = this.replaces;\n        if (replaces) // decodeURIComponent is a holdover from 2c086eb4. Not sure that it is actually necessary\n        extraHeaders.push(\"Replaces: \" + decodeURIComponent(replaces));\n        const referredBy = this.referredBy;\n        if (referredBy) extraHeaders.push(\"Referred-By: \" + referredBy);\n        options.extraHeaders = extraHeaders;\n        this.inviter = this.session.userAgent._makeInviter(targetURI, options);\n        this.inviter._referred = this.session;\n        this.session._referral = this.inviter;\n        return this.inviter;\n    }\n}\n\n\n\nclass $eae6918d36f972bb$export$1fb4852a55678982 {\n    /**\n     * Constructor.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @internal\n     */ constructor(userAgent, options = {}){\n        /** True if there is an outgoing re-INVITE request outstanding. */ this.pendingReinvite = false;\n        /** True if there is an incoming re-INVITE ACK request outstanding. */ this.pendingReinviteAck = false;\n        /** Session state. */ this._state = (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial;\n        this.delegate = options.delegate;\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        this._userAgent = userAgent;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        this.logger.log(`Session ${this.id} in state ${this._state} is being disposed`);\n        // Remove from the user agent's session collection\n        delete this.userAgent._sessions[this.id];\n        // Dispose of dialog media\n        if (this._sessionDescriptionHandler) this._sessionDescriptionHandler.close();\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return new Promise((resolve)=>{\n                    this._bye({\n                        // wait for the response to the BYE before resolving\n                        onAccept: ()=>resolve(),\n                        onRedirect: ()=>resolve(),\n                        onReject: ()=>resolve()\n                    });\n                });\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                break; // nothing to be done\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                break; // nothing to be done\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        return Promise.resolve();\n    }\n    /**\n     * The asserted identity of the remote user.\n     */ get assertedIdentity() {\n        return this._assertedIdentity;\n    }\n    /**\n     * The confirmed session dialog.\n     */ get dialog() {\n        return this._dialog;\n    }\n    /**\n     * A unique identifier for this session.\n     */ get id() {\n        return this._id;\n    }\n    /**\n     * The session being replace by this one.\n     */ get replacee() {\n        return this._replacee;\n    }\n    /**\n     * Session description handler.\n     * @remarks\n     * If `this` is an instance of `Invitation`,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * If `this` is an instance of `Inviter` and an offer was sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"establishing\".\n     * If `this` is an instance of `Inviter` and an offer was not sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * Otherwise `undefined`.\n     */ get sessionDescriptionHandler() {\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Session description handler factory.\n     */ get sessionDescriptionHandlerFactory() {\n        return this.userAgent.configuration.sessionDescriptionHandlerFactory;\n    }\n    /**\n     * SDH modifiers for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */ get sessionDescriptionHandlerModifiers() {\n        return this._sessionDescriptionHandlerModifiers || [];\n    }\n    set sessionDescriptionHandlerModifiers(modifiers) {\n        this._sessionDescriptionHandlerModifiers = modifiers.slice();\n    }\n    /**\n     * SDH options for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */ get sessionDescriptionHandlerOptions() {\n        return this._sessionDescriptionHandlerOptions || {};\n    }\n    set sessionDescriptionHandlerOptions(options) {\n        this._sessionDescriptionHandlerOptions = Object.assign({}, options);\n    }\n    /**\n     * SDH modifiers for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */ get sessionDescriptionHandlerModifiersReInvite() {\n        return this._sessionDescriptionHandlerModifiersReInvite || [];\n    }\n    set sessionDescriptionHandlerModifiersReInvite(modifiers) {\n        this._sessionDescriptionHandlerModifiersReInvite = modifiers.slice();\n    }\n    /**\n     * SDH options for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */ get sessionDescriptionHandlerOptionsReInvite() {\n        return this._sessionDescriptionHandlerOptionsReInvite || {};\n    }\n    set sessionDescriptionHandlerOptionsReInvite(options) {\n        this._sessionDescriptionHandlerOptionsReInvite = Object.assign({}, options);\n    }\n    /**\n     * Session state.\n     */ get state() {\n        return this._state;\n    }\n    /**\n     * Session state change emitter.\n     */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The user agent.\n     */ get userAgent() {\n        return this._userAgent;\n    }\n    /**\n     * End the {@link Session}. Sends a BYE.\n     * @param options - Options bucket. See {@link SessionByeOptions} for details.\n     */ bye(options = {}) {\n        let message = \"Session.bye() may only be called if established session.\";\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However Inviter.invite() has not yet been called.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                } else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called.\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However a dialog does not yet exist.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                } else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called (or not yet resolved).\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                {\n                    const requestDelegate = options.requestDelegate;\n                    const requestOptions = this.copyRequestOptions(options.requestOptions);\n                    return this._bye(requestDelegate, requestOptions);\n                }\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                message += \" However this session is already terminating.\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") message += \" Perhaps you have already called Inviter.cancel()?\";\n                else if (typeof this.reject === \"function\") message += \" Perhaps you have already called Session.bye()?\";\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                message += \" However this session is already terminated.\";\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.error(message);\n        return Promise.reject(new Error(`Invalid session state ${this.state}`));\n    }\n    /**\n     * Share {@link Info} with peer. Sends an INFO.\n     * @param options - Options bucket. See {@link SessionInfoOptions} for details.\n     */ info(options = {}) {\n        // guard session state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            const message = \"Session.info() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._info(requestDelegate, requestOptions);\n    }\n    /**\n     * Renegotiate the session. Sends a re-INVITE.\n     * @param options - Options bucket. See {@link SessionInviteOptions} for details.\n     */ invite(options = {}) {\n        this.logger.log(\"Session.invite\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        if (this.pendingReinvite) return Promise.reject(new (0, $92ef9568286e94e7$export$83a8f2b4495394c4)(\"Reinvite in progress. Please wait until complete, then try again.\"));\n        this.pendingReinvite = true;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptions;\n        const delegate = {\n            onAccept: (response)=>{\n                // A re-INVITE transaction has an offer/answer [RFC3264] exchange\n                // associated with it.  The UAC (User Agent Client) generating a given\n                // re-INVITE can act as the offerer or as the answerer.  A UAC willing\n                // to act as the offerer includes an offer in the re-INVITE.  The UAS\n                // (User Agent Server) then provides an answer in a response to the\n                // re-INVITE.  A UAC willing to act as answerer does not include an\n                // offer in the re-INVITE.  The UAS then provides an offer in a response\n                // to the re-INVITE becoming, thus, the offerer.\n                // https://tools.ietf.org/html/rfc6141#section-1\n                const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(response.message);\n                if (!body) {\n                    // No way to recover, so terminate session and mark as failed.\n                    this.logger.error(\"Received 2xx response to re-INVITE without a session description\");\n                    this.ackAndBye(response, 400, \"Missing session description\");\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    this.pendingReinvite = false;\n                    return;\n                }\n                if (options.withoutSdp) {\n                    // INVITE without SDP - set remote offer and send an answer in the ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setOfferAndGetAnswer(body, answerOptions).then((answerBody)=>{\n                        response.ack({\n                            body: answerBody\n                        });\n                    }).catch((error)=>{\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle offer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        if (this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) // A BYE should not be sent if already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        response.ack();\n                        else {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        }\n                    }).then(()=>{\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                    });\n                } else {\n                    // INVITE with SDP - set remote answer and send an ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setAnswer(body, answerOptions).then(()=>{\n                        response.ack();\n                    }).catch((error)=>{\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle answer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        // A BYE should only be sent if session is not already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        // The ACK needs to be sent regardless as it was not handled by the transaction.\n                        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        } else response.ack();\n                    }).then(()=>{\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                    });\n                }\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onProgress: (response)=>{\n                return;\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onRedirect: (response)=>{\n                return;\n            },\n            onReject: (response)=>{\n                this.logger.warn(\"Received a non-2xx response to re-INVITE\");\n                this.pendingReinvite = false;\n                if (options.withoutSdp) {\n                    if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                } else this.rollbackOffer().catch((error)=>{\n                    // No way to recover, so terminate session and mark as failed.\n                    this.logger.error(\"Failed to rollback offer on non-2xx response to re-INVITE\");\n                    this.logger.error(error.message);\n                    // A BYE should only be sent if session is not already terminated.\n                    // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                    // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                    if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n                        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n                        const extraHeaders = [];\n                        extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                        this.dialog.bye(undefined, {\n                            extraHeaders: extraHeaders\n                        });\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    }\n                }).then(()=>{\n                    if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                });\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onTrying: (response)=>{\n                return;\n            }\n        };\n        const requestOptions = options.requestOptions || {};\n        requestOptions.extraHeaders = (requestOptions.extraHeaders || []).slice();\n        requestOptions.extraHeaders.push(\"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString());\n        requestOptions.extraHeaders.push(\"Contact: \" + this._contact);\n        // Just send an INVITE with no sdp...\n        if (options.withoutSdp) {\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            return Promise.resolve(this.dialog.invite(delegate, requestOptions));\n        }\n        // Get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        return this.getOffer(offerOptions).then((offerBody)=>{\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            requestOptions.body = offerBody;\n            return this.dialog.invite(delegate, requestOptions);\n        }).catch((error)=>{\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to send re-INVITE\");\n            this.pendingReinvite = false;\n            throw error;\n        });\n    }\n    /**\n     * Deliver a {@link Message}. Sends a MESSAGE.\n     * @param options - Options bucket. See {@link SessionMessageOptions} for details.\n     */ message(options = {}) {\n        // guard session state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            const message = \"Session.message() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._message(requestDelegate, requestOptions);\n    }\n    /**\n     * Proffer a {@link Referral}. Send a REFER.\n     * @param referTo - The referral target. If a `Session`, a REFER w/Replaces is sent.\n     * @param options - Options bucket. See {@link SessionReferOptions} for details.\n     */ refer(referTo, options = {}) {\n        // guard session state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            const message = \"Session.refer() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        // REFER with Replaces (Attended Transfer) only supported with established sessions.\n        if (referTo instanceof $eae6918d36f972bb$export$1fb4852a55678982 && !referTo.dialog) {\n            const message = \"Session.refer() may only be called with session which is established. You are perhaps attempting to attended transfer to a target for which there is not dialog yet established. Perhaps you are attempting a 'semi-attended' tansfer? Regardless, this is not supported. The recommended approached is to check to see if the target Session is in the Established state before calling refer(); if the state is not Established you may proceed by falling back using a URI as the target (blind transfer).\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        requestOptions.extraHeaders = requestOptions.extraHeaders ? requestOptions.extraHeaders.concat(this.referExtraHeaders(this.referToString(referTo))) : this.referExtraHeaders(this.referToString(referTo));\n        return this._refer(options.onNotify, requestDelegate, requestOptions);\n    }\n    /**\n     * Send BYE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _bye(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        const dialog = this.dialog;\n        // The caller's UA MAY send a BYE for either confirmed or early dialogs,\n        // and the callee's UA MAY send a BYE on confirmed dialogs, but MUST NOT\n        // send a BYE on early dialogs. However, the callee's UA MUST NOT send a\n        // BYE on a confirmed dialog until it has received an ACK for its 2xx\n        // response or until the server transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        switch(dialog.sessionState){\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Initial:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Early:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).AckWait:\n                // This state only occurs if we are the callee.\n                this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating); // We're terminating\n                return new Promise((resolve)=>{\n                    dialog.delegate = {\n                        // When ACK shows up, say BYE.\n                        onAck: ()=>{\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                            resolve(request);\n                            return Promise.resolve();\n                        },\n                        // Or the server transaction times out before the ACK arrives.\n                        onAckTimeout: ()=>{\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                            resolve(request);\n                        }\n                    };\n                });\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Confirmed:\n                {\n                    const request = dialog.bye(delegate, options);\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve(request);\n                }\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Terminated:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n    }\n    /**\n     * Send INFO.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _info(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        return Promise.resolve(this.dialog.info(delegate, options));\n    }\n    /**\n     * Send MESSAGE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _message(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        return Promise.resolve(this.dialog.message(delegate, options));\n    }\n    /**\n     * Send REFER.\n     * @param onNotify - Notification callback.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _refer(onNotify, delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        // If set, deliver any in-dialog NOTIFY requests here...\n        this.onNotify = onNotify;\n        return Promise.resolve(this.dialog.refer(delegate, options));\n    }\n    /**\n     * Send ACK and then BYE. There are unrecoverable errors which can occur\n     * while handling dialog forming and in-dialog INVITE responses and when\n     * they occur we ACK the response and send a BYE.\n     * Note that the BYE is sent in the dialog associated with the response\n     * which is not necessarily `this.dialog`. And, accordingly, the\n     * session state is not transitioned to terminated and session is not closed.\n     * @param inviteResponse - The response causing the error.\n     * @param statusCode - Status code for he reason phrase.\n     * @param reasonPhrase - Reason phrase for the BYE.\n     * @internal\n     */ ackAndBye(response, statusCode, reasonPhrase) {\n        response.ack();\n        const extraHeaders = [];\n        if (statusCode) extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(statusCode, reasonPhrase));\n        // Using the dialog session associate with the response (which might not be this.dialog)\n        response.session.bye(undefined, {\n            extraHeaders: extraHeaders\n        });\n    }\n    /**\n     * Handle in dialog ACK request.\n     * @internal\n     */ onAckRequest(request) {\n        this.logger.log(\"Session.onAckRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating) {\n            this.logger.error(`ACK received while in state ${this.state}, dropping request`);\n            return Promise.resolve();\n        }\n        const dialog = this.dialog;\n        if (!dialog) throw new Error(\"Dialog undefined.\");\n        // if received answer in ACK.\n        const answerOptions = {\n            sessionDescriptionHandlerOptions: this.pendingReinviteAck ? this.sessionDescriptionHandlerOptionsReInvite : this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.pendingReinviteAck ? this._sessionDescriptionHandlerModifiersReInvite : this._sessionDescriptionHandlerModifiers\n        };\n        if (this.delegate && this.delegate.onAck) {\n            const ack = new (0, $56b90c466b43873c$export$a0eb6f8226b214ab)(request);\n            this.delegate.onAck(ack);\n        }\n        // reset pending ACK flag\n        this.pendingReinviteAck = false;\n        switch(dialog.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                {\n                    // State should never be reached as first reliable response must have answer/offer.\n                    // So we must have never has sent an offer.\n                    this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                    const extraHeaders = [\n                        \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                    ];\n                    dialog.bye(undefined, {\n                        extraHeaders: extraHeaders\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve();\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                {\n                    // State we should be in.\n                    // Either the ACK has the answer that got us here, or we were in this state prior to the ACK.\n                    const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(request.message);\n                    // If the ACK doesn't have an answer, nothing to be done.\n                    if (!body) return Promise.resolve();\n                    if (body.contentDisposition === \"render\") {\n                        this._renderbody = body.content;\n                        this._rendertype = body.contentType;\n                        return Promise.resolve();\n                    }\n                    if (body.contentDisposition !== \"session\") return Promise.resolve();\n                    return this.setAnswer(body, answerOptions).catch((error)=>{\n                        this.logger.error(error.message);\n                        const extraHeaders = [\n                            \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                        ];\n                        dialog.bye(undefined, {\n                            extraHeaders: extraHeaders\n                        });\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                {\n                    // State should never be reached as local offer would be answered by this ACK.\n                    // So we must have received an ACK without an answer.\n                    this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                    const extraHeaders = [\n                        \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                    ];\n                    dialog.bye(undefined, {\n                        extraHeaders: extraHeaders\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve();\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                {\n                    // State should never be reached as remote offer would be answered in first reliable response.\n                    // So we must have never has sent an answer.\n                    this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                    const extraHeaders = [\n                        \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                    ];\n                    dialog.bye(undefined, {\n                        extraHeaders: extraHeaders\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve();\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Handle in dialog BYE request.\n     * @internal\n     */ onByeRequest(request) {\n        this.logger.log(\"Session.onByeRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`BYE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onBye) {\n            const bye = new (0, $d5afbbeee4be05d2$export$1030969e2d8a99b)(request);\n            this.delegate.onBye(bye);\n        } else request.accept();\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Handle in dialog INFO request.\n     * @internal\n     */ onInfoRequest(request) {\n        this.logger.log(\"Session.onInfoRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`INFO received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onInfo) {\n            const info = new (0, $ca92780e96cf59eb$export$c4868e4a24d48fad)(request);\n            this.delegate.onInfo(info);\n        } else // FIXME: TODO: We should reject request...\n        //\n        // If a UA receives an INFO request associated with an Info Package that\n        // the UA has not indicated willingness to receive, the UA MUST send a\n        // 469 (Bad Info Package) response (see Section 11.6), which contains a\n        // Recv-Info header field with Info Packages for which the UA is willing\n        // to receive INFO requests.\n        // https://tools.ietf.org/html/rfc6086#section-4.2.2\n        request.accept();\n    }\n    /**\n     * Handle in dialog INVITE request.\n     * @internal\n     */ onInviteRequest(request) {\n        this.logger.log(\"Session.onInviteRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`INVITE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // set pending ACK flag\n        this.pendingReinviteAck = true;\n        // TODO: would be nice to have core track and set the Contact header,\n        // but currently the session which is setting it is holding onto it.\n        const extraHeaders = [\n            \"Contact: \" + this._contact\n        ];\n        // Handle P-Asserted-Identity\n        if (request.message.hasHeader(\"P-Asserted-Identity\")) {\n            const header = request.message.getHeader(\"P-Asserted-Identity\");\n            if (!header) throw new Error(\"Header undefined.\");\n            this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(header);\n        }\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        this.generateResponseOfferAnswerInDialog(options).then((body)=>{\n            const outgoingResponse = request.accept({\n                statusCode: 200,\n                extraHeaders: extraHeaders,\n                body: body\n            });\n            if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 200);\n        }).catch((error)=>{\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to handle to re-INVITE request\");\n            if (!this.dialog) throw new Error(\"Dialog undefined.\");\n            this.logger.error(this.dialog.signalingState);\n            // If we don't have a local/remote offer...\n            if (this.dialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) {\n                const outgoingResponse = request.reject({\n                    statusCode: 488\n                }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                return;\n            }\n            // Otherwise rollback\n            this.rollbackOffer().then(()=>{\n                const outgoingResponse = request.reject({\n                    statusCode: 488\n                }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n            }).catch((errorRollback)=>{\n                // No way to recover, so terminate session and mark as failed.\n                this.logger.error(errorRollback.message);\n                this.logger.error(\"Failed to rollback offer on re-INVITE request\");\n                const outgoingResponse = request.reject({\n                    statusCode: 488\n                }); // Not Acceptable Here\n                // A BYE should only be sent if session is not already terminated.\n                // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n                    if (!this.dialog) throw new Error(\"Dialog undefined.\");\n                    const extraHeadersBye = [];\n                    extraHeadersBye.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                    this.dialog.bye(undefined, {\n                        extraHeaders: extraHeadersBye\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                }\n                if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n            });\n        });\n    }\n    /**\n     * Handle in dialog MESSAGE request.\n     * @internal\n     */ onMessageRequest(request) {\n        this.logger.log(\"Session.onMessageRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`MESSAGE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onMessage) {\n            const message = new (0, $031801d494727803$export$f69c19e57285b83a)(request);\n            this.delegate.onMessage(message);\n        } else request.accept();\n    }\n    /**\n     * Handle in dialog NOTIFY request.\n     * @internal\n     */ onNotifyRequest(request) {\n        this.logger.log(\"Session.onNotifyRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`NOTIFY received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // If this a NOTIFY associated with the progress of a REFER,\n        // look to delegate handling to the associated callback.\n        if (this.onNotify) {\n            const notification = new (0, $305e86db02d77018$export$14834abbfce3b8cd)(request);\n            this.onNotify(notification);\n            return;\n        }\n        // Otherwise accept the NOTIFY.\n        if (this.delegate && this.delegate.onNotify) {\n            const notification = new (0, $305e86db02d77018$export$14834abbfce3b8cd)(request);\n            this.delegate.onNotify(notification);\n        } else request.accept();\n    }\n    /**\n     * Handle in dialog PRACK request.\n     * @internal\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onPrackRequest(request) {\n        this.logger.log(\"Session.onPrackRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`PRACK received while in state ${this.state}, dropping request`);\n            return;\n        }\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * Handle in dialog REFER request.\n     * @internal\n     */ onReferRequest(request) {\n        this.logger.log(\"Session.onReferRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`REFER received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // REFER is a SIP request and is constructed as defined in [1].  A REFER\n        // request MUST contain exactly one Refer-To header field value.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.1\n        if (!request.message.hasHeader(\"refer-to\")) {\n            this.logger.warn(\"Invalid REFER packet. A refer-to header is required. Rejecting.\");\n            request.reject();\n            return;\n        }\n        const referral = new (0, $785325132a53fe8a$export$85b1ddd8f58e2bc1)(request, this);\n        if (this.delegate && this.delegate.onRefer) this.delegate.onRefer(referral);\n        else {\n            this.logger.log(\"No delegate available to handle REFER, automatically accepting and following.\");\n            referral.accept().then(()=>referral.makeInviter(this._referralInviterOptions).invite()).catch((error)=>{\n                // FIXME: logging and eating error...\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request.\n     * If a remote offer was provided in the request, set the remote\n     * description and get a local answer. If a remote offer was not\n     * provided, generates a local offer.\n     * @internal\n     */ generateResponseOfferAnswer(request, options) {\n        if (this.dialog) return this.generateResponseOfferAnswerInDialog(options);\n        const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(request.message);\n        if (!body || body.contentDisposition !== \"session\") return this.getOffer(options);\n        else return this.setOfferAndGetAnswer(body, options);\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request\n     * when a dialog (early or otherwise) has already been established.\n     * This method may NOT be called if a dialog has yet to be established.\n     * @internal\n     */ generateResponseOfferAnswerInDialog(options) {\n        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n        switch(this.dialog.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                return this.getOffer(options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                return Promise.resolve(undefined);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                if (!this.dialog.offer) throw new Error(`Session offer undefined in signaling state ${this.dialog.signalingState}.`);\n                return this.setOfferAndGetAnswer(this.dialog.offer, options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) return Promise.resolve(undefined);\n                // In dialog INVITE without offer, get an offer for the response.\n                return this.getOffer(options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Get local offer.\n     * @internal\n     */ getOffer(options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh.getDescription(sdhOptions, sdhModifiers).then((bodyAndContentType)=>(0, $35e2f96fad41499f$export$46b123b754f2f425)(bodyAndContentType)).catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.getOffer: SDH getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.getOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.getOffer: SDH getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Rollback local/remote offer.\n     * @internal\n     */ rollbackOffer() {\n        const sdh = this.setupSessionDescriptionHandler();\n        if (sdh.rollbackDescription === undefined) return Promise.resolve();\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh.rollbackDescription().catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.rollbackOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote answer.\n     * @internal\n     */ setAnswer(answer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(answer.contentType)) return Promise.reject(new (0, $9bf0273360d9374b$export$9057181257c3c72f)());\n        } catch (error) {\n            this.logger.error(\"Session.setAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh.setDescription(answer.content, sdhOptions, sdhModifiers).catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setAnswer: SDH setDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setAnswer: SDH setDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote offer and get local answer.\n     * @internal\n     */ setOfferAndGetAnswer(offer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(offer.contentType)) return Promise.reject(new (0, $9bf0273360d9374b$export$9057181257c3c72f)());\n        } catch (error) {\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh.setDescription(offer.content, sdhOptions, sdhModifiers).then(()=>sdh.getDescription(sdhOptions, sdhModifiers)).then((bodyAndContentType)=>(0, $35e2f96fad41499f$export$46b123b754f2f425)(bodyAndContentType)).catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setOfferAndGetAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */ setSessionDescriptionHandler(sdh) {\n        if (this._sessionDescriptionHandler) throw new Error(\"Session description handler defined.\");\n        this._sessionDescriptionHandler = sdh;\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */ setupSessionDescriptionHandler() {\n        var _a;\n        if (this._sessionDescriptionHandler) return this._sessionDescriptionHandler;\n        this._sessionDescriptionHandler = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions);\n        if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) this.delegate.onSessionDescriptionHandler(this._sessionDescriptionHandler, false);\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Transition session state.\n     * @internal\n     */ stateTransition(newState) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch(this._state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Session ${this.id} transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) this.dispose();\n    }\n    copyRequestOptions(requestOptions = {}) {\n        const extraHeaders = requestOptions.extraHeaders ? requestOptions.extraHeaders.slice() : undefined;\n        const body = requestOptions.body ? {\n            contentDisposition: requestOptions.body.contentDisposition || \"render\",\n            contentType: requestOptions.body.contentType || \"text/plain\",\n            content: requestOptions.body.content || \"\"\n        } : undefined;\n        return {\n            extraHeaders: extraHeaders,\n            body: body\n        };\n    }\n    getReasonHeaderValue(code, reason) {\n        const cause = code;\n        let text = (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(code);\n        if (!text && reason) text = reason;\n        return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n    }\n    referExtraHeaders(referTo) {\n        const extraHeaders = [];\n        extraHeaders.push(\"Referred-By: <\" + this.userAgent.configuration.uri + \">\");\n        extraHeaders.push(\"Contact: \" + this._contact);\n        extraHeaders.push(\"Allow: \" + [\n            \"ACK\",\n            \"CANCEL\",\n            \"INVITE\",\n            \"MESSAGE\",\n            \"BYE\",\n            \"OPTIONS\",\n            \"INFO\",\n            \"NOTIFY\",\n            \"REFER\"\n        ].toString());\n        extraHeaders.push(\"Refer-To: \" + referTo);\n        return extraHeaders;\n    }\n    referToString(target) {\n        let referTo;\n        if (target instanceof (0, $dbdae61072997c03$export$9156e739aa33e19f)) // REFER without Replaces (Blind Transfer)\n        referTo = target.toString();\n        else {\n            // REFER with Replaces (Attended Transfer)\n            if (!target.dialog) throw new Error(\"Dialog undefined.\");\n            const displayName = target.remoteIdentity.friendlyName;\n            const remoteTarget = target.dialog.remoteTarget.toString();\n            const callId = target.dialog.callId;\n            const remoteTag = target.dialog.remoteTag;\n            const localTag = target.dialog.localTag;\n            const replaces = encodeURIComponent(`${callId};to-tag=${remoteTag};from-tag=${localTag}`);\n            referTo = `\"${displayName}\" <${remoteTarget}?Replaces=${replaces}>`;\n        }\n        return referTo;\n    }\n}\n\n\n\n/**\n * SIP extension support level.\n * @public\n */ var $546aa63f60a92037$export$7ddf33a7d88270b4;\n(function(SIPExtension) {\n    SIPExtension[\"Required\"] = \"Required\";\n    SIPExtension[\"Supported\"] = \"Supported\";\n    SIPExtension[\"Unsupported\"] = \"Unsupported\";\n})($546aa63f60a92037$export$7ddf33a7d88270b4 = $546aa63f60a92037$export$7ddf33a7d88270b4 || ($546aa63f60a92037$export$7ddf33a7d88270b4 = {}));\nconst $546aa63f60a92037$export$abeafd9e99196554 = {\n    \"100rel\": true,\n    \"199\": true,\n    answermode: true,\n    \"early-session\": true,\n    eventlist: true,\n    explicitsub: true,\n    \"from-change\": true,\n    \"geolocation-http\": true,\n    \"geolocation-sip\": true,\n    gin: true,\n    gruu: true,\n    histinfo: true,\n    ice: true,\n    join: true,\n    \"multiple-refer\": true,\n    norefersub: true,\n    nosub: true,\n    outbound: true,\n    path: true,\n    policy: true,\n    precondition: true,\n    pref: true,\n    privacy: true,\n    \"recipient-list-invite\": true,\n    \"recipient-list-message\": true,\n    \"recipient-list-subscribe\": true,\n    replaces: true,\n    \"resource-priority\": true,\n    \"sdp-anat\": true,\n    \"sec-agree\": true,\n    tdialog: true,\n    timer: true,\n    uui: true // RFC 7433\n};\n\n\nclass $a6342d8a5fcabb95$export$d899bafc7f84ca89 extends (0, $eae6918d36f972bb$export$1fb4852a55678982) {\n    /** @internal */ constructor(userAgent, incomingInviteRequest){\n        super(userAgent);\n        this.incomingInviteRequest = incomingInviteRequest;\n        /** True if dispose() has been called. */ this.disposed = false;\n        /** INVITE will be rejected if not accepted within a certain period time. */ this.expiresTimer = undefined;\n        /** True if this Session has been Terminated due to a CANCEL request. */ this.isCanceled = false;\n        /** Are reliable provisional responses required or supported. */ this.rel100 = \"none\";\n        /** The current RSeq header value. */ this.rseq = Math.floor(Math.random() * 10000);\n        /** INVITE will be rejected if final response not sent in a certain period time. */ this.userNoAnswerTimer = undefined;\n        /** True if waiting for a PRACK before sending a 200 Ok. */ this.waitingForPrack = false;\n        this.logger = userAgent.getLogger(\"sip.Invitation\");\n        const incomingRequestMessage = this.incomingInviteRequest.message;\n        // Set 100rel if necessary\n        const requireHeader = incomingRequestMessage.getHeader(\"require\");\n        if (requireHeader && requireHeader.toLowerCase().includes(\"100rel\")) this.rel100 = \"required\";\n        const supportedHeader = incomingRequestMessage.getHeader(\"supported\");\n        if (supportedHeader && supportedHeader.toLowerCase().includes(\"100rel\")) this.rel100 = \"supported\";\n        // FIXME: HACK: This is a hack to port an existing behavior.\n        // Set the toTag on the incoming request message to the toTag which\n        // will be used in the response to the incoming request!!!\n        // The behavior being ported appears to be a hack itself,\n        // so this is a hack to port a hack. At least one test spec\n        // relies on it (which is yet another hack).\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        incomingRequestMessage.toTag = incomingInviteRequest.toTag;\n        if (typeof incomingRequestMessage.toTag !== \"string\") throw new TypeError(\"toTag should have been a string.\");\n        // The following mapping values are RECOMMENDED:\n        // ...\n        // 19 no answer from the user              480 Temporarily unavailable\n        // https://tools.ietf.org/html/rfc3398#section-7.2.4.1\n        this.userNoAnswerTimer = setTimeout(()=>{\n            incomingInviteRequest.reject({\n                statusCode: 480\n            });\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        }, this.userAgent.configuration.noAnswerTimeout ? this.userAgent.configuration.noAnswerTimeout * 1000 : 60000);\n        // 1. If the request is an INVITE that contains an Expires header\n        // field, the UAS core sets a timer for the number of seconds\n        // indicated in the header field value.  When the timer fires, the\n        // invitation is considered to be expired.  If the invitation\n        // expires before the UAS has generated a final response, a 487\n        // (Request Terminated) response SHOULD be generated.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1\n        if (incomingRequestMessage.hasHeader(\"expires\")) {\n            const expires = Number(incomingRequestMessage.getHeader(\"expires\") || 0) * 1000;\n            this.expiresTimer = setTimeout(()=>{\n                if (this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) {\n                    incomingInviteRequest.reject({\n                        statusCode: 487\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                }\n            }, expires);\n        }\n        // Session parent properties\n        const assertedIdentity = this.request.getHeader(\"P-Asserted-Identity\");\n        if (assertedIdentity) this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(assertedIdentity);\n        this._contact = this.userAgent.contact.toString();\n        const contentDisposition = incomingRequestMessage.parseHeader(\"Content-Disposition\");\n        if (contentDisposition && contentDisposition.type === \"render\") {\n            this._renderbody = incomingRequestMessage.body;\n            this._rendertype = incomingRequestMessage.getHeader(\"Content-Type\");\n        }\n        // Identifier\n        this._id = incomingRequestMessage.callId + incomingRequestMessage.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        // Clear timers\n        if (this.expiresTimer) {\n            clearTimeout(this.expiresTimer);\n            this.expiresTimer = undefined;\n        }\n        if (this.userNoAnswerTimer) {\n            clearTimeout(this.userNoAnswerTimer);\n            this.userNoAnswerTimer = undefined;\n        }\n        // If accept() is still waiting for a PRACK, make sure it rejects\n        this.prackNeverArrived();\n        // If the final response for the initial INVITE not yet been sent, reject it\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                return this.reject().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                return this.reject().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * If true, a first provisional response after the 100 Trying\n     * will be sent automatically. This is false it the UAC required\n     * reliable provisional responses (100rel in Require header) or\n     * the user agent configuration has specified to not send an\n     * initial response, otherwise it is true. The provisional is sent by\n     * calling `progress()` without any options.\n     */ get autoSendAnInitialProvisionalResponse() {\n        return this.rel100 !== \"required\" && this.userAgent.configuration.sendInitialProvisionalResponse;\n    }\n    /**\n     * Initial incoming INVITE request message body.\n     */ get body() {\n        return this.incomingInviteRequest.message.body;\n    }\n    /**\n     * The identity of the local user.\n     */ get localIdentity() {\n        return this.request.to;\n    }\n    /**\n     * The identity of the remote user.\n     */ get remoteIdentity() {\n        return this.request.from;\n    }\n    /**\n     * Initial incoming INVITE request message.\n     */ get request() {\n        return this.incomingInviteRequest.message;\n    }\n    /**\n     * Accept the invitation.\n     *\n     * @remarks\n     * Accept the incoming INVITE request to start a Session.\n     * Replies to the INVITE request with a 200 Ok response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * This method may reject for a variety of reasons including\n     * the receipt of a CANCEL request before `accept` is able\n     * to construct a response.\n     * @param options - Options bucket.\n     */ accept(options = {}) {\n        this.logger.log(\"Invitation.accept\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing);\n        return this.sendAccept(options)// eslint-disable-next-line @typescript-eslint/no-unused-vars\n        .then(({ message: message, session: session })=>{\n            session.delegate = {\n                onAck: (ackRequest)=>this.onAckRequest(ackRequest),\n                onAckTimeout: ()=>this.onAckTimeout(),\n                onBye: (byeRequest)=>this.onByeRequest(byeRequest),\n                onInfo: (infoRequest)=>this.onInfoRequest(infoRequest),\n                onInvite: (inviteRequest)=>this.onInviteRequest(inviteRequest),\n                onMessage: (messageRequest)=>this.onMessageRequest(messageRequest),\n                onNotify: (notifyRequest)=>this.onNotifyRequest(notifyRequest),\n                onPrack: (prackRequest)=>this.onPrackRequest(prackRequest),\n                onRefer: (referRequest)=>this.onReferRequest(referRequest)\n            };\n            this._dialog = session;\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n            // TODO: Reconsider this \"automagic\" send of a BYE to replacee behavior.\n            // This behavior has been ported forward from legacy versions.\n            if (this._replacee) this._replacee._bye();\n        }).catch((error)=>this.handleResponseError(error));\n    }\n    /**\n     * Indicate progress processing the invitation.\n     *\n     * @remarks\n     * Report progress to the the caller.\n     * Replies to the INVITE request with a 1xx provisional response.\n     * Resolves once the response sent, otherwise rejects.\n     * @param options - Options bucket.\n     */ progress(options = {}) {\n        this.logger.log(\"Invitation.progress\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Ported\n        const statusCode = options.statusCode || 180;\n        if (statusCode < 100 || statusCode > 199) throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // After the first reliable provisional response for a request has been\n        // acknowledged, the UAS MAY send additional reliable provisional\n        // responses.  The UAS MUST NOT send a second reliable provisional\n        // response until the first is acknowledged.  After the first, it is\n        // RECOMMENDED that the UAS not send an additional reliable provisional\n        // response until the previous is acknowledged.  The first reliable\n        // provisional response receives special treatment because it conveys\n        // the initial sequence number.  If additional reliable provisional\n        // responses were sent before the first was acknowledged, the UAS could\n        // not be certain these were received in order.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) {\n            this.logger.warn(\"Unexpected call for progress while waiting for prack, ignoring\");\n            return Promise.resolve();\n        }\n        // Trying provisional response\n        if (options.statusCode === 100) return this.sendProgressTrying().then(()=>{\n            return;\n        }).catch((error)=>this.handleResponseError(error));\n        // Standard provisional response\n        if (!(this.rel100 === \"required\") && !(this.rel100 === \"supported\" && options.rel100) && !(this.rel100 === \"supported\" && this.userAgent.configuration.sipExtension100rel === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Required)) return this.sendProgress(options).then(()=>{\n            return;\n        }).catch((error)=>this.handleResponseError(error));\n        // Reliable provisional response\n        return this.sendProgressReliableWaitForPrack(options).then(()=>{\n            return;\n        }).catch((error)=>this.handleResponseError(error));\n    }\n    /**\n     * Reject the invitation.\n     *\n     * @remarks\n     * Replies to the INVITE request with a 4xx, 5xx, or 6xx final response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * The expectation is that this method is used to reject an INVITE request.\n     * That is indeed the case - a call to `progress` followed by `reject` is\n     * a typical way to \"decline\" an incoming INVITE request. However it may\n     * also be called after calling `accept` (but only before it completes)\n     * which will reject the call and cause `accept` to reject.\n     * @param options - Options bucket.\n     */ reject(options = {}) {\n        this.logger.log(\"Invitation.reject\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        const statusCode = options.statusCode || 480;\n        const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(statusCode);\n        const extraHeaders = options.extraHeaders || [];\n        if (statusCode < 300 || statusCode > 699) throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        const body = options.body ? (0, $35e2f96fad41499f$export$46b123b754f2f425)(options.body) : undefined;\n        // FIXME: Need to redirect to someplace\n        statusCode < 400 ? this.incomingInviteRequest.redirect([], {\n            statusCode: statusCode,\n            reasonPhrase: reasonPhrase,\n            extraHeaders: extraHeaders,\n            body: body\n        }) : this.incomingInviteRequest.reject({\n            statusCode: statusCode,\n            reasonPhrase: reasonPhrase,\n            extraHeaders: extraHeaders,\n            body: body\n        });\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        return Promise.resolve();\n    }\n    /**\n     * Handle CANCEL request.\n     *\n     * @param message - CANCEL message.\n     * @internal\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    _onCancel(message) {\n        this.logger.log(\"Invitation._onCancel\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`CANCEL received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onCancel) {\n            const cancel = new (0, $24df438dfb566a5a$export$848c9b7ead0df967)(message);\n            this.delegate.onCancel(cancel);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // reject INVITE with 487 status code\n        this.incomingInviteRequest.reject({\n            statusCode: 487\n        });\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Helper function to handle offer/answer in a PRACK.\n     */ handlePrackOfferAnswer(request) {\n        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n        // If the PRACK doesn't have an offer/answer, nothing to be done.\n        const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(request.message);\n        if (!body || body.contentDisposition !== \"session\") return Promise.resolve(undefined);\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        // If the UAC receives a reliable provisional response with an offer\n        // (this would occur if the UAC sent an INVITE without an offer, in\n        // which case the first reliable provisional response will contain the\n        // offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        // a reliable provisional response with an answer, it MAY generate an\n        // additional offer in the PRACK.  If the UAS receives a PRACK with an\n        // offer, it MUST place the answer in the 2xx to the PRACK.\n        // https://tools.ietf.org/html/rfc3262#section-5\n        switch(this.dialog.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                // State should never be reached as first reliable provisional response must have answer/offer.\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                // Receved answer.\n                return this.setAnswer(body, options).then(()=>undefined);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // State should never be reached as local offer would be answered by this PRACK\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                // Received offer, generate answer.\n                return this.setOfferAndGetAnswer(body, options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * A handler for errors which occur while attempting to send 1xx and 2xx responses.\n     * In all cases, an attempt is made to reject the request if it is still outstanding.\n     * And while there are a variety of things which can go wrong and we log something here\n     * for all errors, there are a handful of common exceptions we pay some extra attention to.\n     * @param error - The error which occurred.\n     */ handleResponseError(error) {\n        let statusCode = 480; // \"Temporarily Unavailable\"\n        // Log Error message\n        if (error instanceof Error) this.logger.error(error.message);\n        else // We don't actually know what a session description handler implementation might throw our way,\n        // and more generally as a last resort catch all, just assume we are getting an \"unknown\" and log it.\n        this.logger.error(error);\n        // Log Exception message\n        if (error instanceof (0, $9bf0273360d9374b$export$9057181257c3c72f)) {\n            this.logger.error(\"A session description handler occurred while sending response (content type unsupported\");\n            statusCode = 415; // \"Unsupported Media Type\"\n        } else if (error instanceof (0, $2f6becfc657677bb$export$371a565fed7d7f84)) this.logger.error(\"A session description handler occurred while sending response\");\n        else if (error instanceof (0, $49bb337e8869494e$export$3f32b591920dbfba)) this.logger.error(\"Session ended before response could be formulated and sent (while waiting for PRACK)\");\n        else if (error instanceof (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)) this.logger.error(\"Session changed state before response could be formulated and sent\");\n        // Reject if still in \"initial\" or \"establishing\" state.\n        if (this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial || this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) try {\n            this.incomingInviteRequest.reject({\n                statusCode: statusCode\n            });\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        } catch (e) {\n            this.logger.error(\"An error occurred attempting to reject the request while handling another error\");\n            throw e; // This is not a good place to be...\n        }\n        // FIXME: TODO:\n        // Here we are squelching the throwing of errors due to an race condition.\n        // We have an internal race between calling `accept()` and handling an incoming\n        // CANCEL request. As there is no good way currently to delegate the handling of\n        // these race errors to the caller of `accept()`, we are squelching the throwing\n        // of ALL errors when/if they occur after receiving a CANCEL to catch the ONE we know\n        // is a \"normal\" exceptional condition. While this is a completely reasonable approach,\n        // the decision should be left up to the library user. Furthermore, as we are eating\n        // ALL errors in this case, we are potentially (likely) hiding \"real\" errors which occur.\n        //\n        // Only rethrow error if the session has not been canceled.\n        if (this.isCanceled) {\n            this.logger.warn(\"An error occurred while attempting to formulate and send a response to an incoming INVITE. However a CANCEL was received and processed while doing so which can (and often does) result in errors occurring as the session terminates in the meantime. Said error is being ignored.\");\n            return;\n        }\n        throw error;\n    }\n    /**\n     * Callback for when ACK for a 2xx response is never received.\n     * @param session - Session the ACK never arrived for.\n     */ onAckTimeout() {\n        this.logger.log(\"Invitation.onAckTimeout\");\n        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n        this.logger.log(\"No ACK received for an extended period of time, terminating session\");\n        this.dialog.bye();\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * A version of `accept` which resolves a session when the 200 Ok response is sent.\n     * @param options - Options bucket.\n     */ sendAccept(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const extraHeaders = options.extraHeaders || [];\n        // The UAS MAY send a final response to the initial request before\n        // having received PRACKs for all unacknowledged reliable provisional\n        // responses, unless the final response is 2xx and any of the\n        // unacknowledged reliable provisional responses contained a session\n        // description.  In that case, it MUST NOT send a final response until\n        // those provisional responses are acknowledged.  If the UAS does send a\n        // final response when reliable responses are still unacknowledged, it\n        // SHOULD NOT continue to retransmit the unacknowledged reliable\n        // provisional responses, but it MUST be prepared to process PRACK\n        // requests for those outstanding responses.  A UAS MUST NOT send new\n        // reliable provisional responses (as opposed to retransmissions of\n        // unacknowledged ones) after sending a final response to a request.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) return this.waitForArrivalOfPrack().then(()=>clearTimeout(this.userNoAnswerTimer)) // Ported\n        .then(()=>this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions)).then((body)=>this.incomingInviteRequest.accept({\n                statusCode: 200,\n                body: body,\n                extraHeaders: extraHeaders\n            }));\n        clearTimeout(this.userNoAnswerTimer); // Ported\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((body)=>this.incomingInviteRequest.accept({\n                statusCode: 200,\n                body: body,\n                extraHeaders: extraHeaders\n            }));\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response is sent.\n     * @param options - Options bucket.\n     */ sendProgress(options = {}) {\n        const statusCode = options.statusCode || 180;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const body = options.body ? (0, $35e2f96fad41499f$export$46b123b754f2f425)(options.body) : undefined;\n        // The 183 (Session Progress) response is used to convey information\n        // about the progress of the call that is not otherwise classified.  The\n        // Reason-Phrase, header fields, or message body MAY be used to convey\n        // more details about the call progress.\n        // https://tools.ietf.org/html/rfc3261#section-21.1.5\n        // It is the de facto industry standard to utilize 183 with SDP to provide \"early media\".\n        // While it is unlikely someone would want to send a 183 without SDP, so it should be an option.\n        if (statusCode === 183 && !body) return this.sendProgressWithSDP(options);\n        try {\n            const progressResponse = this.incomingInviteRequest.progress({\n                statusCode: statusCode,\n                reasonPhrase: reasonPhrase,\n                extraHeaders: extraHeaders,\n                body: body\n            });\n            this._dialog = progressResponse.session;\n            return Promise.resolve(progressResponse);\n        } catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response with sdp is sent.\n     * @param options - Options bucket.\n     */ sendProgressWithSDP(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Get an offer/answer and send a reply.\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((body)=>this.incomingInviteRequest.progress({\n                statusCode: statusCode,\n                reasonPhrase: reasonPhrase,\n                extraHeaders: extraHeaders,\n                body: body\n            })).then((progressResponse)=>{\n            this._dialog = progressResponse.session;\n            return progressResponse;\n        });\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is sent.\n     * @param options - Options bucket.\n     */ sendProgressReliable(options = {}) {\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(\"Require: 100rel\");\n        options.extraHeaders.push(\"RSeq: \" + Math.floor(Math.random() * 10000));\n        return this.sendProgressWithSDP(options);\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is acknowledged.\n     * @param options - Options bucket.\n     */ sendProgressReliableWaitForPrack(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        extraHeaders.push(\"Require: 100rel\");\n        extraHeaders.push(\"RSeq: \" + this.rseq++);\n        let body;\n        return new Promise((resolve, reject)=>{\n            this.waitingForPrack = true;\n            this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((offerAnswer)=>{\n                body = offerAnswer;\n                return this.incomingInviteRequest.progress({\n                    statusCode: statusCode,\n                    reasonPhrase: reasonPhrase,\n                    extraHeaders: extraHeaders,\n                    body: body\n                });\n            }).then((progressResponse)=>{\n                this._dialog = progressResponse.session;\n                let prackRequest;\n                let prackResponse;\n                progressResponse.session.delegate = {\n                    onPrack: (request)=>{\n                        prackRequest = request;\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(prackWaitTimeoutTimer);\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(rel1xxRetransmissionTimer);\n                        if (!this.waitingForPrack) return;\n                        this.waitingForPrack = false;\n                        this.handlePrackOfferAnswer(prackRequest).then((prackResponseBody)=>{\n                            try {\n                                prackResponse = prackRequest.accept({\n                                    statusCode: 200,\n                                    body: prackResponseBody\n                                });\n                                this.prackArrived();\n                                resolve({\n                                    prackRequest: prackRequest,\n                                    prackResponse: prackResponse,\n                                    progressResponse: progressResponse\n                                });\n                            } catch (error) {\n                                reject(error);\n                            }\n                        }).catch((error)=>reject(error));\n                    }\n                };\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const prackWaitTimeout = ()=>{\n                    if (!this.waitingForPrack) return;\n                    this.waitingForPrack = false;\n                    this.logger.warn(\"No PRACK received, rejecting INVITE.\");\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    clearTimeout(rel1xxRetransmissionTimer);\n                    this.reject({\n                        statusCode: 504\n                    }).then(()=>reject(new (0, $49bb337e8869494e$export$3f32b591920dbfba)())).catch((error)=>reject(error));\n                };\n                const prackWaitTimeoutTimer = setTimeout(prackWaitTimeout, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1 * 64);\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const rel1xxRetransmission = ()=>{\n                    try {\n                        this.incomingInviteRequest.progress({\n                            statusCode: statusCode,\n                            reasonPhrase: reasonPhrase,\n                            extraHeaders: extraHeaders,\n                            body: body\n                        });\n                    } catch (error) {\n                        this.waitingForPrack = false;\n                        reject(error);\n                        return;\n                    }\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, timeout *= 2);\n                };\n                let timeout = (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1;\n                let rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, timeout);\n            }).catch((error)=>{\n                this.waitingForPrack = false;\n                reject(error);\n            });\n        });\n    }\n    /**\n     * A version of `progress` which resolves when a 100 Trying provisional response is sent.\n     */ sendProgressTrying() {\n        try {\n            const progressResponse = this.incomingInviteRequest.trying();\n            return Promise.resolve(progressResponse);\n        } catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * When attempting to accept the INVITE, an invitation waits\n     * for any outstanding PRACK to arrive before sending the 200 Ok.\n     * It will be waiting on this Promise to resolve which lets it know\n     * the PRACK has arrived and it may proceed to send the 200 Ok.\n     */ waitForArrivalOfPrack() {\n        if (this.waitingForPrackPromise) throw new Error(\"Already waiting for PRACK\");\n        this.waitingForPrackPromise = new Promise((resolve, reject)=>{\n            this.waitingForPrackResolve = resolve;\n            this.waitingForPrackReject = reject;\n        });\n        return this.waitingForPrackPromise;\n    }\n    /**\n     * Here we are resolving the promise which in turn will cause\n     * the accept to proceed (it may still fail for other reasons, but...).\n     */ prackArrived() {\n        if (this.waitingForPrackResolve) this.waitingForPrackResolve();\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n    /**\n     * Here we are rejecting the promise which in turn will cause\n     * the accept to fail and the session to transition to \"terminated\".\n     */ prackNeverArrived() {\n        if (this.waitingForPrackReject) this.waitingForPrackReject(new (0, $49bb337e8869494e$export$3f32b591920dbfba)());\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n}\n\n\n\n\n\n\n\n\n\nclass $989df868235ee8e3$export$2215cc52469fcfa0 extends (0, $eae6918d36f972bb$export$1fb4852a55678982) {\n    /**\n     * Constructs a new instance of the `Inviter` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param options - Options bucket. See {@link InviterOptions} for details.\n     */ constructor(userAgent, targetURI, options = {}){\n        super(userAgent, options);\n        /** True if dispose() has been called. */ this.disposed = false;\n        /** True if early media use is enabled. */ this.earlyMedia = false;\n        /** The early media session description handlers. */ this.earlyMediaSessionDescriptionHandlers = new Map();\n        /** True if cancel() was called. */ this.isCanceled = false;\n        /** True if initial INVITE without SDP. */ this.inviteWithoutSdp = false;\n        this.logger = userAgent.getLogger(\"sip.Inviter\");\n        // Early media\n        this.earlyMedia = options.earlyMedia !== undefined ? options.earlyMedia : this.earlyMedia;\n        // From tag\n        this.fromTag = (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)();\n        // Invite without SDP\n        this.inviteWithoutSdp = options.inviteWithoutSdp !== undefined ? options.inviteWithoutSdp : this.inviteWithoutSdp;\n        // Inviter options (could do better copying these options)\n        const inviterOptions = Object.assign({}, options);\n        inviterOptions.params = Object.assign({}, options.params);\n        // Anonymous call\n        const anonymous = options.anonymous || false;\n        // Contact\n        const contact = userAgent.contact.toString({\n            anonymous: anonymous,\n            // Do not add ;ob in initial forming dialog requests if the\n            // registration over the current connection got a GRUU URI.\n            outbound: anonymous ? !userAgent.contact.tempGruu : !userAgent.contact.pubGruu\n        });\n        // FIXME: TODO: We should not be parsing URIs here as if it fails we have to throw an exception\n        // which is not something we want our constructor to do. URIs should be passed in as params.\n        // URIs\n        if (anonymous && userAgent.configuration.uri) {\n            inviterOptions.params.fromDisplayName = \"Anonymous\";\n            inviterOptions.params.fromUri = \"sip:anonymous@anonymous.invalid\";\n        }\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (inviterOptions.params.fromUri) fromURI = typeof inviterOptions.params.fromUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(inviterOptions.params.fromUri) : inviterOptions.params.fromUri;\n        if (!fromURI) throw new TypeError(\"Invalid from URI: \" + inviterOptions.params.fromUri);\n        let toURI = targetURI;\n        if (inviterOptions.params.toUri) toURI = typeof inviterOptions.params.toUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(inviterOptions.params.toUri) : inviterOptions.params.toUri;\n        if (!toURI) throw new TypeError(\"Invalid to URI: \" + inviterOptions.params.toUri);\n        // Params\n        const messageOptions = Object.assign({}, inviterOptions.params);\n        messageOptions.fromTag = this.fromTag;\n        // Extra headers\n        const extraHeaders = (inviterOptions.extraHeaders || []).slice();\n        if (anonymous && userAgent.configuration.uri) {\n            extraHeaders.push(\"P-Preferred-Identity: \" + userAgent.configuration.uri.toString());\n            extraHeaders.push(\"Privacy: id\");\n        }\n        extraHeaders.push(\"Contact: \" + contact);\n        extraHeaders.push(\"Allow: \" + [\n            \"ACK\",\n            \"CANCEL\",\n            \"INVITE\",\n            \"MESSAGE\",\n            \"BYE\",\n            \"OPTIONS\",\n            \"INFO\",\n            \"NOTIFY\",\n            \"REFER\"\n        ].toString());\n        if (userAgent.configuration.sipExtension100rel === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Required) extraHeaders.push(\"Require: 100rel\");\n        if (userAgent.configuration.sipExtensionReplaces === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Required) extraHeaders.push(\"Require: replaces\");\n        inviterOptions.extraHeaders = extraHeaders;\n        // Body\n        const body = undefined;\n        // Make initial outgoing request message\n        this.outgoingRequestMessage = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE, targetURI, fromURI, toURI, messageOptions, extraHeaders, body);\n        // Session parent properties\n        this._contact = contact;\n        this._referralInviterOptions = inviterOptions;\n        this._renderbody = options.renderbody;\n        this._rendertype = options.rendertype;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // Modifiers and options for re-INVITE transactions\n        if (options.sessionDescriptionHandlerModifiersReInvite) this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiersReInvite;\n        if (options.sessionDescriptionHandlerOptionsReInvite) this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptionsReInvite;\n        // Identifier\n        this._id = this.outgoingRequestMessage.callId + this.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        // Dispose of early dialog media\n        this.disposeEarlyMedia();\n        // If the final response for the initial INVITE not yet been received, cancel it\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                return this.cancel().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                return this.cancel().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * Initial outgoing INVITE request message body.\n     */ get body() {\n        return this.outgoingRequestMessage.body;\n    }\n    /**\n     * The identity of the local user.\n     */ get localIdentity() {\n        return this.outgoingRequestMessage.from;\n    }\n    /**\n     * The identity of the remote user.\n     */ get remoteIdentity() {\n        return this.outgoingRequestMessage.to;\n    }\n    /**\n     * Initial outgoing INVITE request message.\n     */ get request() {\n        return this.outgoingRequestMessage;\n    }\n    /**\n     * Cancels the INVITE request.\n     *\n     * @remarks\n     * Sends a CANCEL request.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * After sending a CANCEL request the expectation is that a 487 final response\n     * will be received for the INVITE. However a 200 final response to the INVITE\n     * may nonetheless arrive (it's a race between the CANCEL reaching the UAS before\n     * the UAS sends a 200) in which case an ACK & BYE will be sent. The net effect\n     * is that this method will terminate the session regardless of the race.\n     * @param options - Options bucket.\n     */ cancel(options = {}) {\n        this.logger.log(\"Inviter.cancel\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating);\n        // helper function\n        function getCancelReason(code, reason) {\n            if (code && code < 200 || code > 699) throw new TypeError(\"Invalid statusCode: \" + code);\n            else if (code) {\n                const cause = code;\n                const text = (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(code) || reason;\n                return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n            }\n        }\n        if (this.outgoingInviteRequest) {\n            // the CANCEL may not be respected by peer(s), so don't transition to terminated\n            let cancelReason;\n            if (options.statusCode && options.reasonPhrase) cancelReason = getCancelReason(options.statusCode, options.reasonPhrase);\n            this.outgoingInviteRequest.cancel(cancelReason, options);\n        } else {\n            this.logger.warn(\"Canceled session before INVITE was sent\");\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Sends the INVITE request.\n     *\n     * @remarks\n     * TLDR...\n     *  1) Only one offer/answer exchange permitted during initial INVITE.\n     *  2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *  3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * 1) Only one offer/answer exchange permitted during initial INVITE.\n     *\n     * Our implementation replaces the following bullet point...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MAY generate subsequent offers in requests based on rules\n     *    specified for that method, but only if it has received answers\n     *    to any previous offers, and has not sent any offers to which it\n     *    hasn't gotten an answer.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...with...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MUST NOT generate subsequent offers in requests based on rules\n     *    specified for that method.\n     *\n     * ...which in combination with this bullet point...\n     *\n     * o  Once the UAS has sent or received an answer to the initial\n     *    offer, it MUST NOT generate subsequent offers in any responses\n     *    to the initial INVITE.  This means that a UAS based on this\n     *    specification alone can never generate subsequent offers until\n     *    completion of the initial transaction.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...ensures that EXACTLY ONE offer/answer exchange will occur\n     * during an initial out of dialog INVITE request made by our UAC.\n     *\n     *\n     * 2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *\n     * While our implementation adheres to the following bullet point...\n     *\n     * o  If the initial offer is in an INVITE, the answer MUST be in a\n     *    reliable non-failure message from UAS back to UAC which is\n     *    correlated to that INVITE.  For this specification, that is\n     *    only the final 2xx response to that INVITE.  That same exact\n     *    answer MAY also be placed in any provisional responses sent\n     *    prior to the answer.  The UAC MUST treat the first session\n     *    description it receives as the answer, and MUST ignore any\n     *    session descriptions in subsequent responses to the initial\n     *    INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * We have made the following implementation decision with regard to early media...\n     *\n     * o  If the initial offer is in the INVITE, the answer from the\n     *    UAS back to the UAC will establish a media session only\n     *    only after the final 2xx response to that INVITE is received.\n     *\n     * The reason for this decision is rooted in a restriction currently\n     * inherent in WebRTC. Specifically, while a SIP INVITE request with an\n     * initial offer may fork resulting in more than one provisional answer,\n     * there is currently no easy/good way to to \"fork\" an offer generated\n     * by a peer connection. In particular, a WebRTC offer currently may only\n     * be matched with one answer and we have no good way to know which\n     * \"provisional answer\" is going to be the \"final answer\". So we have\n     * decided to punt and not create any \"early media\" sessions in this case.\n     *\n     * The upshot is that if you want \"early media\", you must not put the\n     * initial offer in the INVITE. Instead, force the UAS to provide the\n     * initial offer by sending an INVITE without an offer. In the WebRTC\n     * case this allows us to create a unique peer connection with a unique\n     * answer for every provisional offer with \"early media\" on all of them.\n     *\n     *\n     * 3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * The default behavior may be altered and \"early media\" utilized if the\n     * initial offer is in the an INVITE by setting the `earlyMedia` options.\n     * However in that case the INVITE request MUST NOT fork. This allows for\n     * \"early media\" in environments where the forking behavior of the SIP\n     * servers being utilized is configured to disallow forking.\n     */ invite(options = {}) {\n        this.logger.log(\"Inviter.invite\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) // re-invite\n        return super.invite(options);\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // just send an INVITE with no sdp...\n        if (options.withoutSdp || this.inviteWithoutSdp) {\n            if (this._renderbody && this._rendertype) this.outgoingRequestMessage.body = {\n                contentType: this._rendertype,\n                body: this._renderbody\n            };\n            // transition state\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing);\n            return Promise.resolve(this.sendInvite(options));\n        }\n        // get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n        };\n        return this.getOffer(offerOptions).then((body)=>{\n            this.outgoingRequestMessage.body = {\n                body: body.content,\n                contentType: body.contentType\n            };\n            // transition state\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing);\n            return this.sendInvite(options);\n        }).catch((error)=>{\n            this.logger.log(error.message);\n            // It's possible we are already terminated,\n            // so don't throw trying to transition again.\n            if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n            throw error;\n        });\n    }\n    /**\n     * 13.2.1 Creating the Initial INVITE\n     *\n     * Since the initial INVITE represents a request outside of a dialog,\n     * its construction follows the procedures of Section 8.1.1.  Additional\n     * processing is required for the specific case of INVITE.\n     *\n     * An Allow header field (Section 20.5) SHOULD be present in the INVITE.\n     * It indicates what methods can be invoked within a dialog, on the UA\n     * sending the INVITE, for the duration of the dialog.  For example, a\n     * UA capable of receiving INFO requests within a dialog [34] SHOULD\n     * include an Allow header field listing the INFO method.\n     *\n     * A Supported header field (Section 20.37) SHOULD be present in the\n     * INVITE.  It enumerates all the extensions understood by the UAC.\n     *\n     * An Accept (Section 20.1) header field MAY be present in the INVITE.\n     * It indicates which Content-Types are acceptable to the UA, in both\n     * the response received by it, and in any subsequent requests sent to\n     * it within dialogs established by the INVITE.  The Accept header field\n     * is especially useful for indicating support of various session\n     * description formats.\n     *\n     * The UAC MAY add an Expires header field (Section 20.19) to limit the\n     * validity of the invitation.  If the time indicated in the Expires\n     * header field is reached and no final answer for the INVITE has been\n     * received, the UAC core SHOULD generate a CANCEL request for the\n     * INVITE, as per Section 9.\n     *\n     * A UAC MAY also find it useful to add, among others, Subject (Section\n     * 20.36), Organization (Section 20.25) and User-Agent (Section 20.41)\n     * header fields.  They all contain information related to the INVITE.\n     *\n     * The UAC MAY choose to add a message body to the INVITE.  Section\n     * 8.1.1.10 deals with how to construct the header fields -- Content-\n     * Type among others -- needed to describe the message body.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     */ sendInvite(options = {}) {\n        //    There are special rules for message bodies that contain a session\n        //    description - their corresponding Content-Disposition is \"session\".\n        //    SIP uses an offer/answer model where one UA sends a session\n        //    description, called the offer, which contains a proposed description\n        //    of the session.  The offer indicates the desired communications means\n        //    (audio, video, games), parameters of those means (such as codec\n        //    types) and addresses for receiving media from the answerer.  The\n        //    other UA responds with another session description, called the\n        //    answer, which indicates which communications means are accepted, the\n        //    parameters that apply to those means, and addresses for receiving\n        //    media from the offerer. An offer/answer exchange is within the\n        //    context of a dialog, so that if a SIP INVITE results in multiple\n        //    dialogs, each is a separate offer/answer exchange.  The offer/answer\n        //    model defines restrictions on when offers and answers can be made\n        //    (for example, you cannot make a new offer while one is in progress).\n        //    This results in restrictions on where the offers and answers can\n        //    appear in SIP messages.  In this specification, offers and answers\n        //    can only appear in INVITE requests and responses, and ACK.  The usage\n        //    of offers and answers is further restricted.  For the initial INVITE\n        //    transaction, the rules are:\n        //\n        //       o  The initial offer MUST be in either an INVITE or, if not there,\n        //          in the first reliable non-failure message from the UAS back to\n        //          the UAC.  In this specification, that is the final 2xx\n        //          response.\n        //\n        //       o  If the initial offer is in an INVITE, the answer MUST be in a\n        //          reliable non-failure message from UAS back to UAC which is\n        //          correlated to that INVITE.  For this specification, that is\n        //          only the final 2xx response to that INVITE.  That same exact\n        //          answer MAY also be placed in any provisional responses sent\n        //          prior to the answer.  The UAC MUST treat the first session\n        //          description it receives as the answer, and MUST ignore any\n        //          session descriptions in subsequent responses to the initial\n        //          INVITE.\n        //\n        //       o  If the initial offer is in the first reliable non-failure\n        //          message from the UAS back to UAC, the answer MUST be in the\n        //          acknowledgement for that message (in this specification, ACK\n        //          for a 2xx response).\n        //\n        //       o  After having sent or received an answer to the first offer, the\n        //          UAC MAY generate subsequent offers in requests based on rules\n        //          specified for that method, but only if it has received answers\n        //          to any previous offers, and has not sent any offers to which it\n        //          hasn't gotten an answer.\n        //\n        //       o  Once the UAS has sent or received an answer to the initial\n        //          offer, it MUST NOT generate subsequent offers in any responses\n        //          to the initial INVITE.  This means that a UAS based on this\n        //          specification alone can never generate subsequent offers until\n        //          completion of the initial transaction.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        // 5 The Offer/Answer Model and PRACK\n        //\n        //    RFC 3261 describes guidelines for the sets of messages in which\n        //    offers and answers [3] can appear.  Based on those guidelines, this\n        //    extension provides additional opportunities for offer/answer\n        //    exchanges.\n        //    If the INVITE contained an offer, the UAS MAY generate an answer in a\n        //    reliable provisional response (assuming these are supported by the\n        //    UAC).  That results in the establishment of the session before\n        //    completion of the call.  Similarly, if a reliable provisional\n        //    response is the first reliable message sent back to the UAC, and the\n        //    INVITE did not contain an offer, one MUST appear in that reliable\n        //    provisional response.\n        //    If the UAC receives a reliable provisional response with an offer\n        //    (this would occur if the UAC sent an INVITE without an offer, in\n        //    which case the first reliable provisional response will contain the\n        //    offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        //    a reliable provisional response with an answer, it MAY generate an\n        //    additional offer in the PRACK.  If the UAS receives a PRACK with an\n        //    offer, it MUST place the answer in the 2xx to the PRACK.\n        //    Once an answer has been sent or received, the UA SHOULD establish the\n        //    session based on the parameters of the offer and answer, even if the\n        //    original INVITE itself has not been responded to.\n        //    If the UAS had placed a session description in any reliable\n        //    provisional response that is unacknowledged when the INVITE is\n        //    accepted, the UAS MUST delay sending the 2xx until the provisional\n        //    response is acknowledged.  Otherwise, the reliability of the 1xx\n        //    cannot be guaranteed, and reliability is needed for proper operation\n        //    of the offer/answer exchange.\n        //    All user agents that support this extension MUST support all\n        //    offer/answer exchanges that are possible based on the rules in\n        //    Section 13.2 of RFC 3261, based on the existence of INVITE and PRACK\n        //    as requests, and 2xx and reliable 1xx as non-failure reliable\n        //    responses.\n        //\n        // https://tools.ietf.org/html/rfc3262#section-5\n        ////\n        // The Offer/Answer Model Implementation\n        //\n        // The offer/answer model is straight forward, but one MUST READ the specifications...\n        //\n        // 13.2.1 Creating the Initial INVITE (paragraph 8 in particular)\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        //\n        // 5 The Offer/Answer Model and PRACK\n        // https://tools.ietf.org/html/rfc3262#section-5\n        //\n        // Session Initiation Protocol (SIP) Usage of the Offer/Answer Model\n        // https://tools.ietf.org/html/rfc6337\n        ////\n        ////\n        // TODO: The Offer/Answer Model Implementation\n        //\n        // Currently if `earlyMedia` is enabled and the INVITE request forks,\n        // the session is terminated if the early dialog does not match the\n        // confirmed dialog. This restriction make sense in a WebRTC environment,\n        // but there are other environments where this restriction does not hold.\n        //\n        // So while we currently cannot make the offer in INVITE+forking+webrtc\n        // case work, we propose doing the following...\n        //\n        // OPTION 1\n        // - add a `earlyMediaForking` option and\n        // - require SDH.setDescription() to be callable multiple times.\n        //\n        // OPTION 2\n        // 1) modify SDH Factory to provide an initial offer without giving us the SDH, and then...\n        // 2) stick that offer in the initial INVITE, and when 183 with initial answer is received...\n        // 3) ask SDH Factory if it supports \"earlyRemoteAnswer\"\n        //   a) if true, ask SDH Factory to createSDH(localOffer).then((sdh) => sdh.setDescription(remoteAnswer)\n        //   b) if false, defer getting a SDH until 2xx response is received\n        //\n        // Our supplied WebRTC SDH will default to behavior 3b which works in forking environment (without)\n        // early media if initial offer is in the INVITE). We will, however, provide an \"inviteWillNotFork\"\n        // option which if set to \"true\" will have our supplied WebRTC SDH behave in the 3a manner.\n        // That will result in\n        //  - early media working with initial offer in the INVITE, and...\n        //  - if the INVITE forks, the session terminating with an ERROR that reads like\n        //    \"You set 'inviteWillNotFork' to true but the INVITE forked. You can't eat your cake, and have it too.\"\n        //  - furthermore, we accept that users will report that error to us as \"bug\" regardless\n        //\n        // So, SDH Factory is going to end up with a new interface along the lines of...\n        //\n        // interface SessionDescriptionHandlerFactory {\n        //   makeLocalOffer(): Promise<ContentTypeAndBody>;\n        //   makeSessionDescriptionHandler(\n        //     initialOffer: ContentTypeAndBody, offerType: \"local\" | \"remote\"\n        //   ): Promise<SessionDescriptionHandler>;\n        //   supportsEarlyRemoteAnswer: boolean;\n        //   supportsContentType(contentType: string): boolean;\n        //   getDescription(description: ContentTypeAndBody): Promise<ContentTypeAndBody>\n        //   setDescription(description: ContentTypeAndBody): Promise<void>\n        // }\n        ////\n        // Send the INVITE request.\n        this.outgoingInviteRequest = this.userAgent.userAgentCore.invite(this.outgoingRequestMessage, {\n            onAccept: (inviteResponse)=>{\n                // Our transaction layer is \"non-standard\" in that it will only\n                // pass us a 2xx response once per branch, so there is no need to\n                // worry about dealing with 2xx retransmissions. However, we can\n                // and do still get 2xx responses for multiple branches (when an\n                // INVITE is forked) which may create multiple confirmed dialogs.\n                // Herein we are acking and sending a bye to any confirmed dialogs\n                // which arrive beyond the first one. This is the desired behavior\n                // for most applications (but certainly not all).\n                // If we already received a confirmed dialog, ack & bye this additional confirmed session.\n                if (this.dialog) {\n                    this.logger.log(\"Additional confirmed dialog, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    // We do NOT transition state in this case (this is an \"extra\" dialog)\n                    return;\n                }\n                // If the user requested cancellation, ack & bye this session.\n                if (this.isCanceled) {\n                    this.logger.log(\"Canceled session accepted, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return;\n                }\n                this.notifyReferer(inviteResponse);\n                this.onAccept(inviteResponse).then(()=>{\n                    this.disposeEarlyMedia();\n                }).catch(()=>{\n                    this.disposeEarlyMedia();\n                }).then(()=>{\n                    if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(inviteResponse);\n                });\n            },\n            onProgress: (inviteResponse)=>{\n                // If the user requested cancellation, ignore response.\n                if (this.isCanceled) return;\n                this.notifyReferer(inviteResponse);\n                this.onProgress(inviteResponse).catch(()=>{\n                    this.disposeEarlyMedia();\n                }).then(()=>{\n                    if (options.requestDelegate && options.requestDelegate.onProgress) options.requestDelegate.onProgress(inviteResponse);\n                });\n            },\n            onRedirect: (inviteResponse)=>{\n                this.notifyReferer(inviteResponse);\n                this.onRedirect(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onRedirect) options.requestDelegate.onRedirect(inviteResponse);\n            },\n            onReject: (inviteResponse)=>{\n                this.notifyReferer(inviteResponse);\n                this.onReject(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(inviteResponse);\n            },\n            onTrying: (inviteResponse)=>{\n                this.notifyReferer(inviteResponse);\n                this.onTrying(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onTrying) options.requestDelegate.onTrying(inviteResponse);\n            }\n        });\n        return this.outgoingInviteRequest;\n    }\n    disposeEarlyMedia() {\n        this.earlyMediaSessionDescriptionHandlers.forEach((sessionDescriptionHandler)=>{\n            sessionDescriptionHandler.close();\n        });\n        this.earlyMediaSessionDescriptionHandlers.clear();\n    }\n    notifyReferer(response) {\n        if (!this._referred) return;\n        if (!(this._referred instanceof (0, $eae6918d36f972bb$export$1fb4852a55678982))) throw new Error(\"Referred session not instance of session\");\n        if (!this._referred.dialog) return;\n        if (!response.message.statusCode) throw new Error(\"Status code undefined.\");\n        if (!response.message.reasonPhrase) throw new Error(\"Reason phrase undefined.\");\n        const statusCode = response.message.statusCode;\n        const reasonPhrase = response.message.reasonPhrase;\n        const body = `SIP/2.0 ${statusCode} ${reasonPhrase}`.trim();\n        const outgoingNotifyRequest = this._referred.dialog.notify(undefined, {\n            extraHeaders: [\n                \"Event: refer\",\n                \"Subscription-State: terminated\"\n            ],\n            body: {\n                contentDisposition: \"render\",\n                contentType: \"message/sipfrag\",\n                content: body\n            }\n        });\n        // The implicit subscription created by a REFER is the same as a\n        // subscription created with a SUBSCRIBE request.  The agent issuing the\n        // REFER can terminate this subscription prematurely by unsubscribing\n        // using the mechanisms described in [2].  Terminating a subscription,\n        // either by explicitly unsubscribing or rejecting NOTIFY, is not an\n        // indication that the referenced request should be withdrawn or\n        // abandoned.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.4\n        // FIXME: TODO: This should be done in a subscribe dialog to satisfy the above.\n        // If the notify is rejected, stop sending NOTIFY requests.\n        outgoingNotifyRequest.delegate = {\n            onReject: ()=>{\n                this._referred = undefined;\n            }\n        };\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 2xx response.\n     */ onAccept(inviteResponse) {\n        this.logger.log(\"Inviter.onAccept\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`Accept received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported behavior.\n        if (response.hasHeader(\"P-Asserted-Identity\")) this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        // We have a confirmed dialog.\n        session.delegate = {\n            onAck: (ackRequest)=>this.onAckRequest(ackRequest),\n            onBye: (byeRequest)=>this.onByeRequest(byeRequest),\n            onInfo: (infoRequest)=>this.onInfoRequest(infoRequest),\n            onInvite: (inviteRequest)=>this.onInviteRequest(inviteRequest),\n            onMessage: (messageRequest)=>this.onMessageRequest(messageRequest),\n            onNotify: (notifyRequest)=>this.onNotifyRequest(notifyRequest),\n            onPrack: (prackRequest)=>this.onPrackRequest(prackRequest),\n            onRefer: (referRequest)=>this.onReferRequest(referRequest)\n        };\n        this._dialog = session;\n        switch(session.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                // INVITE without offer, so MUST have offer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // INVITE with offer, so MUST have answer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                {\n                    // INVITE without offer, received offer in 2xx, so MUST send answer in ACK.\n                    if (!this._dialog.offer) throw new Error(`Session offer undefined in signaling state ${this._dialog.signalingState}.`);\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setOfferAndGetAnswer(this._dialog.offer, options).then((body)=>{\n                        inviteResponse.ack({\n                            body: body\n                        });\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                    }).catch((error)=>{\n                        this.ackAndBye(inviteResponse, 488, \"Invalid session description\");\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                {\n                    // If INVITE without offer and we have already completed the initial exchange.\n                    if (this.earlyMediaSessionDescriptionHandlers.size > 0) {\n                        const sdh = this.earlyMediaSessionDescriptionHandlers.get(session.id);\n                        if (!sdh) throw new Error(\"Session description handler undefined.\");\n                        this.setSessionDescriptionHandler(sdh);\n                        this.earlyMediaSessionDescriptionHandlers.delete(session.id);\n                        inviteResponse.ack();\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                        return Promise.resolve();\n                    }\n                    // If INVITE with offer and we used an \"early\" answer in a provisional response for media\n                    if (this.earlyMediaDialog) {\n                        // If early media dialog doesn't match confirmed dialog, we must unfortunately fail.\n                        // This limitation stems from how WebRTC currently implements its offer/answer model.\n                        // There are details elsewhere, but in short a WebRTC offer cannot be forked.\n                        if (this.earlyMediaDialog !== session) {\n                            if (this.earlyMedia) {\n                                const message = \"You have set the 'earlyMedia' option to 'true' which requires that your INVITE requests do not fork and yet this INVITE request did in fact fork. Consequentially and not surprisingly the end point which accepted the INVITE (confirmed dialog) does not match the end point with which early media has been setup (early dialog) and thus this session is unable to proceed. In accordance with the SIP specifications, the SIP servers your end point is connected to determine if an INVITE forks and the forking behavior of those servers cannot be controlled by this library. If you wish to use early media with this library you must configure those servers accordingly. Alternatively you may set the 'earlyMedia' to 'false' which will allow this library to function with any INVITE requests which do fork.\";\n                                this.logger.error(message);\n                            }\n                            const error = new Error(\"Early media dialog does not equal confirmed dialog, terminating session\");\n                            this.logger.error(error.message);\n                            this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                            return Promise.reject(error);\n                        }\n                        // Otherwise we are good to go.\n                        inviteResponse.ack();\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                        return Promise.resolve();\n                    }\n                    // If INVITE with offer and we have been waiting till now to apply the answer.\n                    const answer = session.answer;\n                    if (!answer) throw new Error(\"Answer is undefined.\");\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setAnswer(answer, options).then(()=>{\n                        // This session has completed an initial offer/answer exchange...\n                        let ackOptions;\n                        if (this._renderbody && this._rendertype) ackOptions = {\n                            body: {\n                                contentDisposition: \"render\",\n                                contentType: this._rendertype,\n                                content: this._renderbody\n                            }\n                        };\n                        inviteResponse.ack(ackOptions);\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                    }).catch((error)=>{\n                        this.logger.error(error.message);\n                        this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle provisional response to initial INVITE.\n     * @param inviteResponse - 1xx response.\n     */ onProgress(inviteResponse) {\n        var _a;\n        this.logger.log(\"Inviter.onProgress\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`Progress received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        if (!this.outgoingInviteRequest) throw new Error(\"Outgoing INVITE request undefined.\");\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported - Set assertedIdentity.\n        if (response.hasHeader(\"P-Asserted-Identity\")) this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        // If a provisional response is received for an initial request, and\n        // that response contains a Require header field containing the option\n        // tag 100rel, the response is to be sent reliably.  If the response is\n        // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n        // ignored, and the procedures below MUST NOT be used.\n        // https://tools.ietf.org/html/rfc3262#section-4\n        const requireHeader = response.getHeader(\"require\");\n        const rseqHeader = response.getHeader(\"rseq\");\n        const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n        const responseReliable = !!rseq;\n        const extraHeaders = [];\n        if (responseReliable) extraHeaders.push(\"RAck: \" + response.getHeader(\"rseq\") + \" \" + response.getHeader(\"cseq\"));\n        switch(session.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                // INVITE without offer and session still has no offer (and no answer).\n                if (responseReliable) {\n                    // Similarly, if a reliable provisional\n                    // response is the first reliable message sent back to the UAC, and the\n                    // INVITE did not contain an offer, one MUST appear in that reliable\n                    // provisional response.\n                    // https://tools.ietf.org/html/rfc3262#section-5\n                    this.logger.warn(\"First reliable provisional response received MUST contain an offer when INVITE does not contain an offer.\");\n                    // FIXME: Known popular UA's currently end up here...\n                    inviteResponse.prack({\n                        extraHeaders: extraHeaders\n                    });\n                }\n                return Promise.resolve();\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // INVITE with offer and session only has that initial local offer.\n                if (responseReliable) inviteResponse.prack({\n                    extraHeaders: extraHeaders\n                });\n                return Promise.resolve();\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                if (!responseReliable) {\n                    // The initial offer MUST be in either an INVITE or, if not there,\n                    // in the first reliable non-failure message from the UAS back to\n                    // the UAC.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // According to Section 13.2.1 of [RFC3261], 'The first reliable\n                    // non-failure message' must have an offer if there is no offer in the\n                    // INVITE request.  This means that the User Agent (UA) that receives\n                    // the INVITE request without an offer must include an offer in the\n                    // first reliable response with 100rel extension.  If no reliable\n                    // provisional response has been sent, the User Agent Server (UAS) must\n                    // include an offer when sending 2xx response.\n                    // https://tools.ietf.org/html/rfc6337#section-2.2\n                    this.logger.warn(\"Non-reliable provisional response MUST NOT contain an initial offer, discarding response.\");\n                    return Promise.resolve();\n                }\n                {\n                    // If the initial offer is in the first reliable non-failure\n                    // message from the UAS back to UAC, the answer MUST be in the\n                    // acknowledgement for that message\n                    const sdh = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions || {});\n                    if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) this.delegate.onSessionDescriptionHandler(sdh, true);\n                    this.earlyMediaSessionDescriptionHandlers.set(session.id, sdh);\n                    return sdh.setDescription(response.body, this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers).then(()=>sdh.getDescription(this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers)).then((description)=>{\n                        const body = {\n                            contentDisposition: \"session\",\n                            contentType: description.contentType,\n                            content: description.body\n                        };\n                        inviteResponse.prack({\n                            extraHeaders: extraHeaders,\n                            body: body\n                        });\n                    }).catch((error)=>{\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                // This session has completed an initial offer/answer exchange, so...\n                // - INVITE with SDP and this provisional response MAY be reliable\n                // - INVITE without SDP and this provisional response MAY be reliable\n                if (responseReliable) inviteResponse.prack({\n                    extraHeaders: extraHeaders\n                });\n                if (this.earlyMedia && !this.earlyMediaDialog) {\n                    this.earlyMediaDialog = session;\n                    const answer = session.answer;\n                    if (!answer) throw new Error(\"Answer is undefined.\");\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setAnswer(answer, options).catch((error)=>{\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n                return Promise.resolve();\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 3xx response.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onRedirect(inviteResponse) {\n        this.logger.log(\"Inviter.onRedirect\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating) {\n            this.logger.error(`Redirect received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 4xx, 5xx, or 6xx response.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onReject(inviteResponse) {\n        this.logger.log(\"Inviter.onReject\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating) {\n            this.logger.error(`Reject received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 100 response.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onTrying(inviteResponse) {\n        this.logger.log(\"Inviter.onTrying\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`Trying received while in state ${this.state}, dropping response`);\n            return;\n        }\n    }\n}\n\n\n\n\nclass $1a5a7fa3a929ac56$export$9631269509c3d1fb {\n    /**\n     * Constructs a new instance of the `Messager` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param content - Content for the body of the message.\n     * @param contentType - Content type of the body of the message.\n     * @param options - Options bucket. See {@link MessagerOptions} for details.\n     */ constructor(userAgent, targetURI, content, contentType = \"text/plain\", options = {}){\n        // Logger\n        this.logger = userAgent.getLogger(\"sip.Messager\");\n        // Default options params\n        options.params = options.params || {};\n        // URIs\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (options.params.fromUri) fromURI = typeof options.params.fromUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(options.params.fromUri) : options.params.fromUri;\n        if (!fromURI) throw new TypeError(\"Invalid from URI: \" + options.params.fromUri);\n        let toURI = targetURI;\n        if (options.params.toUri) toURI = typeof options.params.toUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(options.params.toUri) : options.params.toUri;\n        if (!toURI) throw new TypeError(\"Invalid to URI: \" + options.params.toUri);\n        // Message params\n        const params = options.params ? Object.assign({}, options.params) : {};\n        // Extra headers\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Body\n        const contentDisposition = \"render\";\n        const body = {\n            contentDisposition: contentDisposition,\n            contentType: contentType,\n            content: content\n        };\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // User agent\n        this.userAgent = userAgent;\n    }\n    /**\n     * Send the message.\n     */ message(options = {}) {\n        this.userAgent.userAgentCore.request(this.request, options.requestDelegate);\n        return Promise.resolve();\n    }\n}\n\n\n\n\n\n\n\n/**\n * {@link Registerer} state.\n * @remarks\n * The {@link Registerer} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   __________________________________________\n *                  |  __________________________              |\n * Registerer       | |                          v             v\n * Constructed -> Initial -> Registered -> Unregistered -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */ var $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd;\n(function(RegistererState) {\n    RegistererState[\"Initial\"] = \"Initial\";\n    RegistererState[\"Registered\"] = \"Registered\";\n    RegistererState[\"Unregistered\"] = \"Unregistered\";\n    RegistererState[\"Terminated\"] = \"Terminated\";\n})($d50b58dd3f4a0f9c$export$7789a6c56b4e5efd = $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd || ($d50b58dd3f4a0f9c$export$7789a6c56b4e5efd = {}));\n\n\nclass $1c17056ca0658eec$export$ed326b71f90510a1 {\n    /**\n     * Constructs a new instance of the `Registerer` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param options - Options bucket. See {@link RegistererOptions} for details.\n     */ constructor(userAgent, options = {}){\n        this.disposed = false;\n        /** The contacts returned from the most recent accepted REGISTER request. */ this._contacts = [];\n        /** The number of seconds to wait before retrying to register. */ this._retryAfter = undefined;\n        /** The registration state. */ this._state = (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Initial;\n        /** True is waiting for final response to outstanding REGISTER request. */ this._waiting = false;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // waiting emitter\n        this._waitingEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // Set user agent\n        this.userAgent = userAgent;\n        // Default registrar is domain portion of user agent uri\n        const defaultUserAgentRegistrar = userAgent.configuration.uri.clone();\n        defaultUserAgentRegistrar.user = undefined;\n        // Initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign({}, $1c17056ca0658eec$export$ed326b71f90510a1.defaultOptions()), {\n            registrar: defaultUserAgentRegistrar\n        }), $1c17056ca0658eec$export$ed326b71f90510a1.stripUndefinedProperties(options));\n        // Make sure we are not using references to array options\n        this.options.extraContactHeaderParams = (this.options.extraContactHeaderParams || []).slice();\n        this.options.extraHeaders = (this.options.extraHeaders || []).slice();\n        // Make sure we are not using references to registrar uri\n        if (!this.options.registrar) throw new Error(\"Registrar undefined.\");\n        this.options.registrar = this.options.registrar.clone();\n        // Set instanceId and regId conditional defaults and validate\n        if (this.options.regId && !this.options.instanceId) this.options.instanceId = this.userAgent.instanceId;\n        else if (!this.options.regId && this.options.instanceId) this.options.regId = 1;\n        if (this.options.instanceId && (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(this.options.instanceId, \"uuid\") === -1) throw new Error(\"Invalid instanceId.\");\n        if (this.options.regId && this.options.regId < 0) throw new Error(\"Invalid regId.\");\n        const registrar = this.options.registrar;\n        const fromURI = this.options.params && this.options.params.fromUri || userAgent.userAgentCore.configuration.aor;\n        const toURI = this.options.params && this.options.params.toUri || userAgent.configuration.uri;\n        const params = this.options.params || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER, registrar, fromURI, toURI, params, extraHeaders, undefined);\n        // Registration expires\n        this.expires = this.options.expires || $1c17056ca0658eec$export$ed326b71f90510a1.defaultExpires;\n        if (this.expires < 0) throw new Error(\"Invalid expires.\");\n        // Interval at which re-REGISTER requests are sent\n        this.refreshFrequency = this.options.refreshFrequency || $1c17056ca0658eec$export$ed326b71f90510a1.defaultRefreshFrequency;\n        if (this.refreshFrequency < 50 || this.refreshFrequency > 99) throw new Error(\"Invalid refresh frequency. The value represents a percentage of the expiration time and should be between 50 and 99.\");\n        // initialize logger\n        this.logger = userAgent.getLogger(\"sip.Registerer\");\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key)=>{\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch(key){\n                    case \"registrar\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + value);\n                        break;\n                    default:\n                        this.logger.log(\"\\xb7 \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // Identifier\n        this.id = this.request.callId + this.request.from.parameters.tag;\n        // Add to the user agent's session collection.\n        this.userAgent._registerers[this.id] = this;\n    }\n    /** Default registerer options. */ static defaultOptions() {\n        return {\n            expires: $1c17056ca0658eec$export$ed326b71f90510a1.defaultExpires,\n            extraContactHeaderParams: [],\n            extraHeaders: [],\n            logConfiguration: true,\n            instanceId: \"\",\n            params: {},\n            regId: 0,\n            registrar: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            refreshFrequency: $1c17056ca0658eec$export$ed326b71f90510a1.defaultRefreshFrequency\n        };\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */ static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key)=>{\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            object[key] = options[key];\n            return object;\n        }, {});\n    }\n    /** The registered contacts. */ get contacts() {\n        return this._contacts.slice();\n    }\n    /**\n     * The number of seconds to wait before retrying to register.\n     * @defaultValue `undefined`\n     * @remarks\n     * When the server rejects a registration request, if it provides a suggested\n     * duration to wait before retrying, that value is available here when and if\n     * the state transitions to `Unsubscribed`. It is also available during the\n     * callback to `onReject` after a call to `register`. (Note that if the state\n     * if already `Unsubscribed`, a rejected request created by `register` will\n     * not cause the state to transition to `Unsubscribed`. One way to avoid this\n     * case is to dispose of `Registerer` when unregistered and create a new\n     * `Registerer` for any attempts to retry registering.)\n     * @example\n     * ```ts\n     * // Checking for retry after on state change\n     * registerer.stateChange.addListener((newState) => {\n     *   switch (newState) {\n     *     case RegistererState.Unregistered:\n     *       const retryAfter = registerer.retryAfter;\n     *       break;\n     *   }\n     * });\n     *\n     * // Checking for retry after on request rejection\n     * registerer.register({\n     *   requestDelegate: {\n     *     onReject: () => {\n     *       const retryAfter = registerer.retryAfter;\n     *     }\n     *   }\n     * });\n     * ```\n     */ get retryAfter() {\n        return this._retryAfter;\n    }\n    /** The registration state. */ get state() {\n        return this._state;\n    }\n    /** Emits when the registerer state changes. */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /** Destructor. */ dispose() {\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        this.logger.log(`Registerer ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's registerer collection\n        delete this.userAgent._registerers[this.id];\n        // If registered, unregisters and resolves after final response received.\n        return new Promise((resolve)=>{\n            const doClose = ()=>{\n                // If we are registered, unregister and resolve after our state changes\n                if (!this.waiting && this._state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered) {\n                    this.stateChange.addListener(()=>{\n                        this.terminated();\n                        resolve();\n                    }, {\n                        once: true\n                    });\n                    this.unregister();\n                    return;\n                }\n                // Otherwise just resolve\n                this.terminated();\n                resolve();\n            };\n            // If we are waiting for an outstanding request, wait for it to finish and then try closing.\n            // Otherwise just try closing.\n            if (this.waiting) this.waitingChange.addListener(()=>{\n                doClose();\n            }, {\n                once: true\n            });\n            else doClose();\n        });\n    }\n    /**\n     * Sends the REGISTER request.\n     * @remarks\n     * If successful, sends re-REGISTER requests prior to registration expiration until `unsubscribe()` is called.\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */ register(options = {}) {\n        if (this.state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            this.stateError();\n            throw new Error(\"Registerer disposed. Unable to register.\");\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new (0, $92ef9568286e94e7$export$83a8f2b4495394c4)(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        // Options\n        if (options.requestOptions) this.options = Object.assign(Object.assign({}, this.options), options.requestOptions);\n        // Extra headers\n        const extraHeaders = (this.options.extraHeaders || []).slice();\n        extraHeaders.push(\"Contact: \" + this.generateContactHeader(this.expires));\n        // this is UA.C.ALLOWED_METHODS, removed to get around circular dependency\n        extraHeaders.push(\"Allow: \" + [\n            \"ACK\",\n            \"CANCEL\",\n            \"INVITE\",\n            \"MESSAGE\",\n            \"BYE\",\n            \"OPTIONS\",\n            \"INFO\",\n            \"NOTIFY\",\n            \"REFER\"\n        ].toString());\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        this.request.extraHeaders = extraHeaders;\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response)=>{\n                let expires;\n                // FIXME: This does NOT appear to be to spec and should be removed.\n                // I haven't found anywhere that an Expires header may be used in a response.\n                if (response.message.hasHeader(\"expires\")) expires = Number(response.message.getHeader(\"expires\"));\n                // 8. The registrar returns a 200 (OK) response.  The response MUST\n                // contain Contact header field values enumerating all current\n                // bindings.  Each Contact value MUST feature an \"expires\"\n                // parameter indicating its expiration interval chosen by the\n                // registrar.  The response SHOULD include a Date header field.\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                this._contacts = response.message.getHeaders(\"contact\");\n                let contacts = this._contacts.length;\n                if (!contacts) {\n                    this.logger.error(\"No Contact header in response to REGISTER, dropping response.\");\n                    this.unregistered();\n                    return;\n                }\n                // The 200 (OK) response from the registrar contains a list of Contact\n                // fields enumerating all current bindings.  The UA compares each\n                // contact address to see if it created the contact address, using\n                // comparison rules in Section 19.1.4.  If so, it updates the expiration\n                // time interval according to the expires parameter or, if absent, the\n                // Expires field value.  The UA then issues a REGISTER request for each\n                // of its bindings before the expiration interval has elapsed.\n                // https://tools.ietf.org/html/rfc3261#section-10.2.4\n                let contact;\n                while(contacts--){\n                    contact = response.message.parseHeader(\"contact\", contacts);\n                    if (!contact) throw new Error(\"Contact undefined\");\n                    if (this.userAgent.contact.pubGruu && (0, $dbdae61072997c03$export$2cee8b57bfbd7333)(contact.uri, this.userAgent.contact.pubGruu)) {\n                        expires = Number(contact.getParam(\"expires\"));\n                        break;\n                    }\n                    // If we are using a randomly generated user name (which is the default behavior)\n                    if (this.userAgent.configuration.contactName === \"\") // compare the user portion of the URI under the assumption that it will be unique\n                    {\n                        if (contact.uri.user === this.userAgent.contact.uri.user) {\n                            expires = Number(contact.getParam(\"expires\"));\n                            break;\n                        }\n                    } else // otherwise use comparision rules in Section 19.1.4\n                    if ((0, $dbdae61072997c03$export$2cee8b57bfbd7333)(contact.uri, this.userAgent.contact.uri)) {\n                        expires = Number(contact.getParam(\"expires\"));\n                        break;\n                    }\n                    contact = undefined;\n                }\n                // There must be a matching contact.\n                if (contact === undefined) {\n                    this.logger.error(\"No Contact header pointing to us, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // The contact must have an expires.\n                if (expires === undefined) {\n                    this.logger.error(\"Contact pointing to us is missing expires parameter, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // Save gruu values\n                if (contact.hasParam(\"temp-gruu\")) {\n                    const gruu = contact.getParam(\"temp-gruu\");\n                    if (gruu) this.userAgent.contact.tempGruu = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(gruu.replace(/\"/g, \"\"));\n                }\n                if (contact.hasParam(\"pub-gruu\")) {\n                    const gruu = contact.getParam(\"pub-gruu\");\n                    if (gruu) this.userAgent.contact.pubGruu = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(gruu.replace(/\"/g, \"\"));\n                }\n                this.registered(expires);\n                if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                this.waitingToggle(false);\n            },\n            onProgress: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onProgress) options.requestDelegate.onProgress(response);\n            },\n            onRedirect: (response)=>{\n                this.logger.error(\"Redirect received. Not supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) options.requestDelegate.onRedirect(response);\n                this.waitingToggle(false);\n            },\n            onReject: (response)=>{\n                if (response.message.statusCode === 423) {\n                    // If a UA receives a 423 (Interval Too Brief) response, it MAY retry\n                    // the registration after making the expiration interval of all contact\n                    // addresses in the REGISTER request equal to or greater than the\n                    // expiration interval within the Min-Expires header field of the 423\n                    // (Interval Too Brief) response.\n                    // https://tools.ietf.org/html/rfc3261#section-10.2.8\n                    //\n                    // The registrar MAY choose an expiration less than the requested\n                    // expiration interval.  If and only if the requested expiration\n                    // interval is greater than zero AND smaller than one hour AND\n                    // less than a registrar-configured minimum, the registrar MAY\n                    // reject the registration with a response of 423 (Interval Too\n                    // Brief).  This response MUST contain a Min-Expires header field\n                    // that states the minimum expiration interval the registrar is\n                    // willing to honor.  It then skips the remaining steps.\n                    // https://tools.ietf.org/html/rfc3261#section-10.3\n                    if (!response.message.hasHeader(\"min-expires\")) {\n                        // This response MUST contain a Min-Expires header field\n                        this.logger.error(\"423 response received for REGISTER without Min-Expires, dropping response\");\n                        this.unregistered();\n                        this.waitingToggle(false);\n                        return;\n                    }\n                    // Increase our registration interval to the suggested minimum\n                    this.expires = Number(response.message.getHeader(\"min-expires\"));\n                    // Attempt the registration again immediately\n                    this.waitingToggle(false);\n                    this.register();\n                    return;\n                }\n                this.logger.warn(`Failed to register, status code ${response.message.statusCode}`);\n                // The Retry-After header field can be used with a 500 (Server Internal\n                // Error) or 503 (Service Unavailable) response to indicate how long the\n                // service is expected to be unavailable to the requesting client...\n                // https://tools.ietf.org/html/rfc3261#section-20.33\n                let retryAfterDuration = NaN;\n                if (response.message.statusCode === 500 || response.message.statusCode === 503) {\n                    const header = response.message.getHeader(\"retry-after\");\n                    if (header) retryAfterDuration = Number.parseInt(header, undefined);\n                }\n                // Set for the state change (if any) and the delegate callback (if any)\n                this._retryAfter = isNaN(retryAfterDuration) ? undefined : retryAfterDuration;\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                this._retryAfter = undefined;\n                this.waitingToggle(false);\n            },\n            onTrying: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onTrying) options.requestDelegate.onTrying(response);\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Sends the REGISTER request with expires equal to zero.\n     * @remarks\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */ unregister(options = {}) {\n        if (this.state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            if (this.state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered) {\n                // allows unregister while disposing and registered\n                this.stateError();\n                throw new Error(\"Registerer disposed. Unable to register.\");\n            }\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new (0, $92ef9568286e94e7$export$83a8f2b4495394c4)(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered && !options.all) this.logger.warn(\"Not currently registered, but sending an unregister anyway.\");\n        // Extra headers\n        const extraHeaders = (options.requestOptions && options.requestOptions.extraHeaders || []).slice();\n        this.request.extraHeaders = extraHeaders;\n        // Registrations are soft state and expire unless refreshed, but can\n        // also be explicitly removed.  A client can attempt to influence the\n        // expiration interval selected by the registrar as described in Section\n        // 10.2.1.  A UA requests the immediate removal of a binding by\n        // specifying an expiration interval of \"0\" for that contact address in\n        // a REGISTER request.  UAs SHOULD support this mechanism so that\n        // bindings can be removed before their expiration interval has passed.\n        //\n        // The REGISTER-specific Contact header field value of \"*\" applies to\n        // all registrations, but it MUST NOT be used unless the Expires header\n        // field is present with a value of \"0\".\n        // https://tools.ietf.org/html/rfc3261#section-10.2.2\n        if (options.all) {\n            extraHeaders.push(\"Contact: *\");\n            extraHeaders.push(\"Expires: 0\");\n        } else extraHeaders.push(\"Contact: \" + this.generateContactHeader(0));\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        // Pre-emptive clear the registration timer to avoid a race condition where\n        // this timer fires while waiting for a final response to the unsubscribe.\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response)=>{\n                this._contacts = response.message.getHeaders(\"contact\"); // Update contacts\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                this.waitingToggle(false);\n            },\n            onProgress: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onProgress) options.requestDelegate.onProgress(response);\n            },\n            onRedirect: (response)=>{\n                this.logger.error(\"Unregister redirected. Not currently supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) options.requestDelegate.onRedirect(response);\n                this.waitingToggle(false);\n            },\n            onReject: (response)=>{\n                this.logger.error(`Unregister rejected with status code ${response.message.statusCode}`);\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                this.waitingToggle(false);\n            },\n            onTrying: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onTrying) options.requestDelegate.onTrying(response);\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Clear registration timers.\n     */ clearTimers() {\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        if (this.registrationExpiredTimer !== undefined) {\n            clearTimeout(this.registrationExpiredTimer);\n            this.registrationExpiredTimer = undefined;\n        }\n    }\n    /**\n     * Generate Contact Header\n     */ generateContactHeader(expires) {\n        let contact = this.userAgent.contact.toString({\n            register: true\n        });\n        if (this.options.regId && this.options.instanceId) {\n            contact += \";reg-id=\" + this.options.regId;\n            contact += ';+sip.instance=\"<urn:uuid:' + this.options.instanceId + '>\"';\n        }\n        if (this.options.extraContactHeaderParams) this.options.extraContactHeaderParams.forEach((header)=>{\n            contact += \";\" + header;\n        });\n        contact += \";expires=\" + expires;\n        return contact;\n    }\n    /**\n     * Helper function, called when registered.\n     */ registered(expires) {\n        this.clearTimers();\n        // Re-Register before the expiration interval has elapsed.\n        // For that, calculate the delay as a percentage of the expiration time\n        this.registrationTimer = setTimeout(()=>{\n            this.registrationTimer = undefined;\n            this.register();\n        }, this.refreshFrequency / 100 * expires * 1000);\n        // We are unregistered if the registration expires.\n        this.registrationExpiredTimer = setTimeout(()=>{\n            this.logger.warn(\"Registration expired\");\n            this.unregistered();\n        }, expires * 1000);\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered) this.stateTransition((0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered);\n    }\n    /**\n     * Helper function, called when unregistered.\n     */ unregistered() {\n        this.clearTimers();\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered) this.stateTransition((0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered);\n    }\n    /**\n     * Helper function, called when terminated.\n     */ terminated() {\n        this.clearTimers();\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) this.stateTransition((0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated);\n    }\n    /**\n     * Transition registration state.\n     */ stateTransition(newState) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch(this._state){\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Initial:\n                if (newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) invalidTransition();\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered:\n                if (newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) invalidTransition();\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered:\n                if (newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) invalidTransition();\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Registration transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) this.dispose();\n    }\n    /** True if the registerer is currently waiting for final response to a REGISTER request. */ get waiting() {\n        return this._waiting;\n    }\n    /** Emits when the registerer waiting state changes. */ get waitingChange() {\n        return this._waitingEventEmitter;\n    }\n    /**\n     * Toggle waiting.\n     */ waitingToggle(waiting) {\n        if (this._waiting === waiting) throw new Error(`Invalid waiting transition from ${this._waiting} to ${waiting}`);\n        this._waiting = waiting;\n        this.logger.log(`Waiting toggled to ${this._waiting}`);\n        this._waitingEventEmitter.emit(this._waiting);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */ waitingWarning() {\n        let message = \"An attempt was made to send a REGISTER request while a prior one was still in progress.\";\n        message += \" RFC 3261 requires UAs MUST NOT send a new registration until they have received a final response\";\n        message += \" from the registrar for the previous one or the previous REGISTER request has timed out.\";\n        message += \" Note that if the transport disconnects, you still must wait for the prior request to time out before\";\n        message += \" sending a new REGISTER request or alternatively dispose of the current Registerer and create a new Registerer.\";\n        this.logger.warn(message);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */ stateError() {\n        const reason = this.state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated ? \"is in 'Terminated' state\" : \"has been disposed\";\n        let message = `An attempt was made to send a REGISTER request when the Registerer ${reason}.`;\n        message += \" The Registerer transitions to 'Terminated' when Registerer.dispose() is called.\";\n        message += \" Perhaps you called UserAgent.stop() which dipsoses of all Registerers?\";\n        this.logger.error(message);\n    }\n}\n$1c17056ca0658eec$export$ed326b71f90510a1.defaultExpires = 600;\n$1c17056ca0658eec$export$ed326b71f90510a1.defaultRefreshFrequency = 99;\n\n\n\n\n\n\n\n\n/* eslint-disable */ //\n// Scoped from: https://github.com/cotag/ts-md5\n//\n/*\n\nTypeScript Md5\n==============\n\nBased on work by\n* Joseph Myers: http://www.myersdaily.org/joseph/javascript/md5-text.html\n* André Cruz: https://github.com/satazor/SparkMD5\n* Raymond Hill: https://github.com/gorhill/yamd5.js\n\nEffectively a TypeScrypt re-write of Raymond Hill JS Library\n\nThe MIT License (MIT)\n\nCopyright (C) 2014 Raymond Hill\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in\nall copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\nTHE SOFTWARE.\n\n\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n                    Version 2, December 2004\n\n Copyright (C) 2015 André Cruz <amdfcruz@gmail.com>\n\n Everyone is permitted to copy and distribute verbatim or modified\n copies of this license document, and changing it is allowed as long\n as the name is changed.\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION\n\n  0. You just DO WHAT THE FUCK YOU WANT TO.\n\n\n*/ class $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd {\n    constructor(){\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state = new Int32Array(4);\n        this._buffer = new ArrayBuffer(68);\n        this._buffer8 = new Uint8Array(this._buffer, 0, 68);\n        this._buffer32 = new Uint32Array(this._buffer, 0, 17);\n        this.start();\n    }\n    static hashStr(str, raw = false) {\n        return this.onePassHasher.start().appendStr(str).end(raw);\n    }\n    static hashAsciiStr(str, raw = false) {\n        return this.onePassHasher.start().appendAsciiStr(str).end(raw);\n    }\n    static _hex(x) {\n        const hc = $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexChars;\n        const ho = $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexOut;\n        let n;\n        let offset;\n        let j;\n        let i;\n        for(i = 0; i < 4; i += 1){\n            offset = i * 8;\n            n = x[i];\n            for(j = 0; j < 8; j += 2){\n                ho[offset + 1 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n                ho[offset + 0 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n            }\n        }\n        return ho.join(\"\");\n    }\n    static _md5cycle(x, k) {\n        let a = x[0];\n        let b = x[1];\n        let c = x[2];\n        let d = x[3];\n        // ff()\n        a += (b & c | ~b & d) + k[0] - 680876936 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[1] - 389564586 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[2] + 606105819 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[3] - 1044525330 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[4] - 176418897 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[5] + 1200080426 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[6] - 1473231341 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[7] - 45705983 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[8] + 1770035416 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[9] - 1958414417 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[10] - 42063 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[11] - 1990404162 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[12] + 1804603682 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[13] - 40341101 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[14] - 1502002290 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[15] + 1236535329 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        // gg()\n        a += (b & d | c & ~d) + k[1] - 165796510 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[6] - 1069501632 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[11] + 643717713 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[0] - 373897302 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[5] - 701558691 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[10] + 38016083 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[15] - 660478335 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[4] - 405537848 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[9] + 568446438 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[14] - 1019803690 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[3] - 187363961 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[8] + 1163531501 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[13] - 1444681467 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[2] - 51403784 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[7] + 1735328473 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[12] - 1926607734 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        // hh()\n        a += (b ^ c ^ d) + k[5] - 378558 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[8] - 2022574463 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[11] + 1839030562 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[14] - 35309556 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[1] - 1530992060 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[4] + 1272893353 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[7] - 155497632 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[10] - 1094730640 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[13] + 681279174 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[0] - 358537222 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[3] - 722521979 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[6] + 76029189 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[9] - 640364487 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[12] - 421815835 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[15] + 530742520 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[2] - 995338651 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        // ii()\n        a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        x[0] = a + x[0] | 0;\n        x[1] = b + x[1] | 0;\n        x[2] = c + x[2] | 0;\n        x[3] = d + x[3] | 0;\n    }\n    start() {\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state.set($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.stateIdentity);\n        return this;\n    }\n    // Char to code point to to array conversion:\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt\n    // #Example.3A_Fixing_charCodeAt_to_handle_non-Basic-Multilingual-Plane_characters_if_their_presence_earlier_in_the_string_is_unknown\n    appendStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let code;\n        let i;\n        for(i = 0; i < str.length; i += 1){\n            code = str.charCodeAt(i);\n            if (code < 128) buf8[bufLen++] = code;\n            else if (code < 0x800) {\n                buf8[bufLen++] = (code >>> 6) + 0xC0;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            } else if (code < 0xD800 || code > 0xDBFF) {\n                buf8[bufLen++] = (code >>> 12) + 0xE0;\n                buf8[bufLen++] = code >>> 6 & 0x3F | 0x80;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            } else {\n                code = (code - 0xD800) * 0x400 + (str.charCodeAt(++i) - 0xDC00) + 0x10000;\n                if (code > 0x10FFFF) throw new Error(\"Unicode standard supports code points up to U+10FFFF\");\n                buf8[bufLen++] = (code >>> 18) + 0xF0;\n                buf8[bufLen++] = code >>> 12 & 0x3F | 0x80;\n                buf8[bufLen++] = code >>> 6 & 0x3F | 0x80;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            }\n            if (bufLen >= 64) {\n                this._dataLength += 64;\n                $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n                bufLen -= 64;\n                buf32[0] = buf32[16];\n            }\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendAsciiStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for(;;){\n            i = Math.min(str.length - j, 64 - bufLen);\n            while(i--)buf8[bufLen++] = str.charCodeAt(j++);\n            if (bufLen < 64) break;\n            this._dataLength += 64;\n            $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendByteArray(input) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for(;;){\n            i = Math.min(input.length - j, 64 - bufLen);\n            while(i--)buf8[bufLen++] = input[j++];\n            if (bufLen < 64) break;\n            this._dataLength += 64;\n            $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    getState() {\n        const self = this;\n        const s = self._state;\n        return {\n            buffer: String.fromCharCode.apply(null, self._buffer8),\n            buflen: self._bufferLength,\n            length: self._dataLength,\n            state: [\n                s[0],\n                s[1],\n                s[2],\n                s[3]\n            ]\n        };\n    }\n    setState(state) {\n        const buf = state.buffer;\n        const x = state.state;\n        const s = this._state;\n        let i;\n        this._dataLength = state.length;\n        this._bufferLength = state.buflen;\n        s[0] = x[0];\n        s[1] = x[1];\n        s[2] = x[2];\n        s[3] = x[3];\n        for(i = 0; i < buf.length; i += 1)this._buffer8[i] = buf.charCodeAt(i);\n    }\n    end(raw = false) {\n        const bufLen = this._bufferLength;\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        const i = (bufLen >> 2) + 1;\n        let dataBitsLen;\n        this._dataLength += bufLen;\n        buf8[bufLen] = 0x80;\n        buf8[bufLen + 1] = buf8[bufLen + 2] = buf8[bufLen + 3] = 0;\n        buf32.set($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.buffer32Identity.subarray(i), i);\n        if (bufLen > 55) {\n            $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n            buf32.set($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.buffer32Identity);\n        }\n        // Do the final computation based on the tail and length\n        // Beware that the final length may not fit in 32 bits so we take care of that\n        dataBitsLen = this._dataLength * 8;\n        if (dataBitsLen <= 0xFFFFFFFF) buf32[14] = dataBitsLen;\n        else {\n            const matches = dataBitsLen.toString(16).match(/(.*?)(.{0,8})$/);\n            if (matches === null) return;\n            const lo = parseInt(matches[2], 16);\n            const hi = parseInt(matches[1], 16) || 0;\n            buf32[14] = lo;\n            buf32[15] = hi;\n        }\n        $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n        return raw ? this._state : $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._hex(this._state);\n    }\n}\n// Private Static Variables\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.stateIdentity = new Int32Array([\n    1732584193,\n    -271733879,\n    -1732584194,\n    271733878\n]);\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.buffer32Identity = new Int32Array([\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0\n]);\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexChars = \"0123456789abcdef\";\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexOut = [];\n// Permanent instance is to use for one-call hashing\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.onePassHasher = new $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd();\nif ($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hashStr(\"hello\") !== \"5d41402abc4b2a76b9719d911017c592\") console.error(\"Md5 self test failed.\");\n\n\n\nfunction $22e94f419ea4370d$var$MD5(s) {\n    return (0, $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd).hashStr(s);\n}\nclass $22e94f419ea4370d$export$44fd481568a62fe6 {\n    /**\n     * Constructor.\n     * @param loggerFactory - LoggerFactory.\n     * @param username - Username.\n     * @param password - Password.\n     */ constructor(loggerFactory, ha1, username, password){\n        this.logger = loggerFactory.getLogger(\"sipjs.digestauthentication\");\n        this.username = username;\n        this.password = password;\n        this.ha1 = ha1;\n        this.nc = 0;\n        this.ncHex = \"00000000\";\n    }\n    /**\n     * Performs Digest authentication given a SIP request and the challenge\n     * received in a response to that request.\n     * @param request -\n     * @param challenge -\n     * @returns true if credentials were successfully generated, false otherwise.\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    authenticate(request, challenge, body) {\n        // Inspect and validate the challenge.\n        this.algorithm = challenge.algorithm;\n        this.realm = challenge.realm;\n        this.nonce = challenge.nonce;\n        this.opaque = challenge.opaque;\n        this.stale = challenge.stale;\n        if (this.algorithm) {\n            if (this.algorithm !== \"MD5\") {\n                this.logger.warn(\"challenge with Digest algorithm different than 'MD5', authentication aborted\");\n                return false;\n            }\n        } else this.algorithm = \"MD5\";\n        if (!this.realm) {\n            this.logger.warn(\"challenge without Digest realm, authentication aborted\");\n            return false;\n        }\n        if (!this.nonce) {\n            this.logger.warn(\"challenge without Digest nonce, authentication aborted\");\n            return false;\n        }\n        // 'qop' can contain a list of values (Array). Let's choose just one.\n        if (challenge.qop) {\n            if (challenge.qop.indexOf(\"auth\") > -1) this.qop = \"auth\";\n            else if (challenge.qop.indexOf(\"auth-int\") > -1) this.qop = \"auth-int\";\n            else {\n                // Otherwise 'qop' is present but does not contain 'auth' or 'auth-int', so abort here.\n                this.logger.warn(\"challenge without Digest qop different than 'auth' or 'auth-int', authentication aborted\");\n                return false;\n            }\n        } else this.qop = undefined;\n        // Fill other attributes.\n        this.method = request.method;\n        this.uri = request.ruri;\n        this.cnonce = (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(12);\n        this.nc += 1;\n        this.updateNcHex();\n        // nc-value = 8LHEX. Max value = 'FFFFFFFF'.\n        if (this.nc === 4294967296) {\n            this.nc = 1;\n            this.ncHex = \"00000001\";\n        }\n        // Calculate the Digest \"response\" value.\n        this.calculateResponse(body);\n        return true;\n    }\n    /**\n     * Return the Proxy-Authorization or WWW-Authorization header value.\n     */ toString() {\n        const authParams = [];\n        if (!this.response) throw new Error(\"response field does not exist, cannot generate Authorization header\");\n        authParams.push(\"algorithm=\" + this.algorithm);\n        authParams.push('username=\"' + this.username + '\"');\n        authParams.push('realm=\"' + this.realm + '\"');\n        authParams.push('nonce=\"' + this.nonce + '\"');\n        authParams.push('uri=\"' + this.uri + '\"');\n        authParams.push('response=\"' + this.response + '\"');\n        if (this.opaque) authParams.push('opaque=\"' + this.opaque + '\"');\n        if (this.qop) {\n            authParams.push(\"qop=\" + this.qop);\n            authParams.push('cnonce=\"' + this.cnonce + '\"');\n            authParams.push(\"nc=\" + this.ncHex);\n        }\n        return \"Digest \" + authParams.join(\", \");\n    }\n    /**\n     * Generate the 'nc' value as required by Digest in this.ncHex by reading this.nc.\n     */ updateNcHex() {\n        const hex = Number(this.nc).toString(16);\n        this.ncHex = \"00000000\".substr(0, 8 - hex.length) + hex;\n    }\n    /**\n     * Generate Digest 'response' value.\n     */ calculateResponse(body) {\n        let ha1, ha2;\n        // HA1 = MD5(A1) = MD5(username:realm:password)\n        ha1 = this.ha1;\n        if (ha1 === \"\" || ha1 === undefined) ha1 = $22e94f419ea4370d$var$MD5(this.username + \":\" + this.realm + \":\" + this.password);\n        if (this.qop === \"auth\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = $22e94f419ea4370d$var$MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)`\n            this.response = $22e94f419ea4370d$var$MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth:\" + ha2);\n        } else if (this.qop === \"auth-int\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI:MD5(entityBody))\n            ha2 = $22e94f419ea4370d$var$MD5(this.method + \":\" + this.uri + \":\" + $22e94f419ea4370d$var$MD5(body ? body : \"\"));\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)\n            this.response = $22e94f419ea4370d$var$MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth-int:\" + ha2);\n        } else if (this.qop === undefined) {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = $22e94f419ea4370d$var$MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:HA2)\n            this.response = $22e94f419ea4370d$var$MD5(ha1 + \":\" + this.nonce + \":\" + ha2);\n        }\n    }\n}\n\n\n\n\n\n\n\nclass $5e1de246245ac2a4$export$efa9a398d6368992 {\n    constructor(logger, category, label){\n        this.logger = logger;\n        this.category = category;\n        this.label = label;\n    }\n    error(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).error, content);\n    }\n    warn(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).warn, content);\n    }\n    log(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log, content);\n    }\n    debug(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).debug, content);\n    }\n    genericLog(level, content) {\n        this.logger.genericLog(level, this.category, this.label, content);\n    }\n    get level() {\n        return this.logger.level;\n    }\n    set level(newLevel) {\n        this.logger.level = newLevel;\n    }\n}\n\n\nclass $98fe2e5334faa23b$export$e0f5ef03cd95415a {\n    constructor(){\n        this.builtinEnabled = true;\n        this._level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log;\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.loggers = {};\n        this.logger = this.getLogger(\"sip:loggerfactory\");\n    }\n    get level() {\n        return this._level;\n    }\n    set level(newLevel) {\n        if (newLevel >= 0 && newLevel <= 3) this._level = newLevel;\n        else if (newLevel > 3) this._level = 3;\n        else if ((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).hasOwnProperty(newLevel)) this._level = newLevel;\n        else this.logger.error(\"invalid 'level' parameter value: \" + JSON.stringify(newLevel));\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    get connector() {\n        return this._connector;\n    }\n    set connector(value) {\n        if (!value) this._connector = undefined;\n        else if (typeof value === \"function\") this._connector = value;\n        else this.logger.error(\"invalid 'connector' parameter value: \" + JSON.stringify(value));\n    }\n    getLogger(category, label) {\n        if (label && this.level === 3) return new (0, $5e1de246245ac2a4$export$efa9a398d6368992)(this, category, label);\n        else if (this.loggers[category]) return this.loggers[category];\n        else {\n            const logger = new (0, $5e1de246245ac2a4$export$efa9a398d6368992)(this, category);\n            this.loggers[category] = logger;\n            return logger;\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    genericLog(levelToLog, category, label, content) {\n        if (this.level >= levelToLog) {\n            if (this.builtinEnabled) this.print(levelToLog, category, label, content);\n        }\n        if (this.connector) this.connector((0, $bb2da993b0fb58b9$export$7dc82a261720bb19)[levelToLog], category, label, content);\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    print(levelToLog, category, label, content) {\n        if (typeof content === \"string\") {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const prefix = [\n                new Date(),\n                category\n            ];\n            if (label) prefix.push(label);\n            content = prefix.concat(content).join(\" | \");\n        }\n        switch(levelToLog){\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).error:\n                // eslint-disable-next-line no-console\n                console.error(content);\n                break;\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).warn:\n                // eslint-disable-next-line no-console\n                console.warn(content);\n                break;\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log:\n                // eslint-disable-next-line no-console\n                console.log(content);\n                break;\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).debug:\n                // eslint-disable-next-line no-console\n                console.debug(content);\n                break;\n            default:\n                break;\n        }\n    }\n}\n\n\n/* eslint-disable no-inner-declarations */ /* eslint-disable @typescript-eslint/no-namespace */ \n\n\nvar $fe1227fc15cbdf8c$export$7acfa6ed01010e37;\n(function(Parser) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function getHeader(data, headerStart) {\n        // 'start' position of the header.\n        let start = headerStart;\n        // 'end' position of the header.\n        let end = 0;\n        // 'partial end' position of the header.\n        let partialEnd = 0;\n        // End of message.\n        if (data.substring(start, start + 2).match(/(^\\r\\n)/)) return -2;\n        while(end === 0){\n            // Partial End of Header.\n            partialEnd = data.indexOf(\"\\r\\n\", start);\n            // 'indexOf' returns -1 if the value to be found never occurs.\n            if (partialEnd === -1) return partialEnd;\n            if (!data.substring(partialEnd + 2, partialEnd + 4).match(/(^\\r\\n)/) && data.charAt(partialEnd + 2).match(/(^\\s+)/)) // Not the end of the message. Continue from the next position.\n            start = partialEnd + 2;\n            else end = partialEnd;\n        }\n        return end;\n    }\n    Parser.getHeader = getHeader;\n    function parseHeader(message, // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    data, headerStart, headerEnd) {\n        const hcolonIndex = data.indexOf(\":\", headerStart);\n        const headerName = data.substring(headerStart, hcolonIndex).trim();\n        const headerValue = data.substring(hcolonIndex + 1, headerEnd).trim();\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let parsed;\n        // If header-field is well-known, parse it.\n        switch(headerName.toLowerCase()){\n            case \"via\":\n            case \"v\":\n                message.addHeader(\"via\", headerValue);\n                if (message.getHeaders(\"via\").length === 1) {\n                    parsed = message.parseHeader(\"Via\");\n                    if (parsed) {\n                        message.via = parsed;\n                        message.viaBranch = parsed.branch;\n                    }\n                } else parsed = 0;\n                break;\n            case \"from\":\n            case \"f\":\n                message.setHeader(\"from\", headerValue);\n                parsed = message.parseHeader(\"from\");\n                if (parsed) {\n                    message.from = parsed;\n                    message.fromTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"to\":\n            case \"t\":\n                message.setHeader(\"to\", headerValue);\n                parsed = message.parseHeader(\"to\");\n                if (parsed) {\n                    message.to = parsed;\n                    message.toTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"record-route\":\n                parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(headerValue, \"Record_Route\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header)=>{\n                    message.addHeader(\"record-route\", headerValue.substring(header.position, header.offset));\n                    message.headers[\"Record-Route\"][message.getHeaders(\"record-route\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"call-id\":\n            case \"i\":\n                message.setHeader(\"call-id\", headerValue);\n                parsed = message.parseHeader(\"call-id\");\n                if (parsed) message.callId = headerValue;\n                break;\n            case \"contact\":\n            case \"m\":\n                parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(headerValue, \"Contact\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header)=>{\n                    message.addHeader(\"contact\", headerValue.substring(header.position, header.offset));\n                    message.headers.Contact[message.getHeaders(\"contact\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"content-length\":\n            case \"l\":\n                message.setHeader(\"content-length\", headerValue);\n                parsed = message.parseHeader(\"content-length\");\n                break;\n            case \"content-type\":\n            case \"c\":\n                message.setHeader(\"content-type\", headerValue);\n                parsed = message.parseHeader(\"content-type\");\n                break;\n            case \"cseq\":\n                message.setHeader(\"cseq\", headerValue);\n                parsed = message.parseHeader(\"cseq\");\n                if (parsed) message.cseq = parsed.value;\n                if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) message.method = parsed.method;\n                break;\n            case \"max-forwards\":\n                message.setHeader(\"max-forwards\", headerValue);\n                parsed = message.parseHeader(\"max-forwards\");\n                break;\n            case \"www-authenticate\":\n                message.setHeader(\"www-authenticate\", headerValue);\n                parsed = message.parseHeader(\"www-authenticate\");\n                break;\n            case \"proxy-authenticate\":\n                message.setHeader(\"proxy-authenticate\", headerValue);\n                parsed = message.parseHeader(\"proxy-authenticate\");\n                break;\n            case \"refer-to\":\n            case \"r\":\n                message.setHeader(\"refer-to\", headerValue);\n                parsed = message.parseHeader(\"refer-to\");\n                if (parsed) message.referTo = parsed;\n                break;\n            default:\n                // Do not parse this header.\n                message.addHeader(headerName.toLowerCase(), headerValue);\n                parsed = 0;\n        }\n        if (parsed === undefined) return {\n            error: \"error parsing header '\" + headerName + \"'\"\n        };\n        else return true;\n    }\n    Parser.parseHeader = parseHeader;\n    function parseMessage(data, logger) {\n        let headerStart = 0;\n        let headerEnd = data.indexOf(\"\\r\\n\");\n        if (headerEnd === -1) {\n            logger.warn(\"no CRLF found, not a SIP message, discarded\");\n            return;\n        }\n        // Parse first line. Check if it is a Request or a Reply.\n        const firstLine = data.substring(0, headerEnd);\n        const parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(firstLine, \"Request_Response\");\n        let message;\n        if (parsed === -1) {\n            logger.warn('error parsing first line of SIP message: \"' + firstLine + '\"');\n            return;\n        } else if (!parsed.status_code) {\n            message = new (0, $36a488a350db25b8$export$b03b8011240de09c)();\n            message.method = parsed.method;\n            message.ruri = parsed.uri;\n        } else {\n            message = new (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)();\n            message.statusCode = parsed.status_code;\n            message.reasonPhrase = parsed.reason_phrase;\n        }\n        message.data = data;\n        headerStart = headerEnd + 2;\n        // Loop over every line in data. Detect the end of each header and parse\n        // it or simply add to the headers collection.\n        let bodyStart;\n        // eslint-disable-next-line no-constant-condition\n        while(true){\n            headerEnd = getHeader(data, headerStart);\n            // The SIP message has normally finished.\n            if (headerEnd === -2) {\n                bodyStart = headerStart + 2;\n                break;\n            } else if (headerEnd === -1) {\n                // data.indexOf returned -1 due to a malformed message.\n                logger.error(\"malformed message\");\n                return;\n            }\n            const parsedHeader = parseHeader(message, data, headerStart, headerEnd);\n            if (parsedHeader && parsedHeader !== true) {\n                logger.error(parsedHeader.error);\n                return;\n            }\n            headerStart = headerEnd + 2;\n        }\n        // RFC3261 18.3.\n        // If there are additional bytes in the transport packet\n        // beyond the end of the body, they MUST be discarded.\n        if (message.hasHeader(\"content-length\")) message.body = data.substr(bodyStart, Number(message.getHeader(\"content-length\")));\n        else message.body = data.substring(bodyStart);\n        return message;\n    }\n    Parser.parseMessage = parseMessage;\n})($fe1227fc15cbdf8c$export$7acfa6ed01010e37 = $fe1227fc15cbdf8c$export$7acfa6ed01010e37 || ($fe1227fc15cbdf8c$export$7acfa6ed01010e37 = {}));\n\n\n\n\n\nfunction $fa12ff70cdbe77c4$export$4a2399f09281a6d4(message, options) {\n    const CRLF = \"\\r\\n\";\n    if (options.statusCode < 100 || options.statusCode > 699) throw new TypeError(\"Invalid statusCode: \" + options.statusCode);\n    const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(options.statusCode);\n    // SIP responses are distinguished from requests by having a Status-Line\n    // as their start-line.  A Status-Line consists of the protocol version\n    // followed by a numeric Status-Code and its associated textual phrase,\n    // with each element separated by a single SP character.\n    // https://tools.ietf.org/html/rfc3261#section-7.2\n    let response = \"SIP/2.0 \" + options.statusCode + \" \" + reasonPhrase + CRLF;\n    // One largely non-method-specific guideline for the generation of\n    // responses is that UASs SHOULD NOT issue a provisional response for a\n    // non-INVITE request.  Rather, UASs SHOULD generate a final response to\n    // a non-INVITE request as soon as possible.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    options.statusCode >= 100 && options.statusCode;\n    // When a 100 (Trying) response is generated, any Timestamp header field\n    // present in the request MUST be copied into this 100 (Trying)\n    // response.  If there is a delay in generating the response, the UAS\n    // SHOULD add a delay value into the Timestamp value in the response.\n    // This value MUST contain the difference between the time of sending of\n    // the response and receipt of the request, measured in seconds.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    options.statusCode;\n    // The From field of the response MUST equal the From header field of\n    // the request.  The Call-ID header field of the response MUST equal the\n    // Call-ID header field of the request.  The CSeq header field of the\n    // response MUST equal the CSeq field of the request.  The Via header\n    // field values in the response MUST equal the Via header field values\n    // in the request and MUST maintain the same ordering.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    const fromHeader = \"From: \" + message.getHeader(\"From\") + CRLF;\n    const callIdHeader = \"Call-ID: \" + message.callId + CRLF;\n    const cSeqHeader = \"CSeq: \" + message.cseq + \" \" + message.method + CRLF;\n    const viaHeaders = message.getHeaders(\"via\").reduce((previous, current)=>{\n        return previous + \"Via: \" + current + CRLF;\n    }, \"\");\n    // If a request contained a To tag in the request, the To header field\n    // in the response MUST equal that of the request.  However, if the To\n    // header field in the request did not contain a tag, the URI in the To\n    // header field in the response MUST equal the URI in the To header\n    // field; additionally, the UAS MUST add a tag to the To header field in\n    // the response (with the exception of the 100 (Trying) response, in\n    // which a tag MAY be present).  This serves to identify the UAS that is\n    // responding, possibly resulting in a component of a dialog ID.  The\n    // same tag MUST be used for all responses to that request, both final\n    // and provisional (again excepting the 100 (Trying)).\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    let toHeader = \"To: \" + message.getHeader(\"to\");\n    if (options.statusCode > 100 && !message.parseHeader(\"to\").hasParam(\"tag\")) {\n        let toTag = options.toTag;\n        if (!toTag) // Stateless UAS Behavior...\n        // o  To header tags MUST be generated for responses in a stateless\n        //    manner - in a manner that will generate the same tag for the\n        //    same request consistently.  For information on tag construction\n        //    see Section 19.3.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.7\n        toTag = (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)(); // FIXME: newTag() currently generates random tags\n        toHeader += \";tag=\" + toTag;\n    }\n    toHeader += CRLF;\n    // FIXME: TODO: needs review... moved to InviteUserAgentServer (as it is specific to that)\n    // let recordRouteHeaders = \"\";\n    // if (request.method === C.INVITE && statusCode > 100 && statusCode <= 200) {\n    //   recordRouteHeaders = request.getHeaders(\"record-route\").reduce((previous, current) => {\n    //     return previous + \"Record-Route: \" + current + CRLF;\n    //   }, \"\");\n    // }\n    // FIXME: TODO: needs review...\n    let supportedHeader = \"\";\n    if (options.supported) supportedHeader = \"Supported: \" + options.supported.join(\", \") + CRLF;\n    // FIXME: TODO: needs review...\n    let userAgentHeader = \"\";\n    if (options.userAgent) userAgentHeader = \"User-Agent: \" + options.userAgent + CRLF;\n    let extensionHeaders = \"\";\n    if (options.extraHeaders) extensionHeaders = options.extraHeaders.reduce((previous, current)=>{\n        return previous + current.trim() + CRLF;\n    }, \"\");\n    // The relative order of header fields with different field names is not\n    // significant.  However, it is RECOMMENDED that header fields which are\n    // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n    // Max-Forwards, and Proxy-Authorization, for example) appear towards\n    // the top of the message to facilitate rapid parsing.\n    // https://tools.ietf.org/html/rfc3261#section-7.3.1\n    // response += recordRouteHeaders;\n    response += viaHeaders;\n    response += fromHeader;\n    response += toHeader;\n    response += cSeqHeader;\n    response += callIdHeader;\n    response += supportedHeader;\n    response += userAgentHeader;\n    response += extensionHeaders;\n    if (options.body) {\n        response += \"Content-Type: \" + options.body.contentType + CRLF;\n        response += \"Content-Length: \" + (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(options.body.content) + CRLF + CRLF;\n        response += options.body.content;\n    } else response += \"Content-Length: 0\" + CRLF + CRLF;\n    return {\n        message: response\n    };\n}\n\n\n\n\n\nclass $3b07629061696787$export$8e68de6fb26f2236 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Unspecified transport error.\");\n    }\n}\n\n\nclass $08399d4a7176186c$export$febc5573c75cefb0 {\n    constructor(_transport, _user, _id, _state, loggerCategory){\n        this._transport = _transport;\n        this._user = _user;\n        this._id = _id;\n        this._state = _state;\n        this.listeners = new Array();\n        this.logger = _user.loggerFactory.getLogger(loggerCategory, _id);\n        this.logger.debug(`Constructing ${this.typeToString()} with id ${this.id}.`);\n    }\n    /**\n     * Destructor.\n     * Once the transaction is in the \"terminated\" state, it is destroyed\n     * immediately and there is no need to call `dispose`. However, if a\n     * transaction needs to be ended prematurely, the transaction user may\n     * do so by calling this method (for example, perhaps the UA is shutting down).\n     * No state transition will occur upon calling this method, all outstanding\n     * transmission timers will be cancelled, and use of the transaction after\n     * calling `dispose` is undefined.\n     */ dispose() {\n        this.logger.debug(`Destroyed ${this.typeToString()} with id ${this.id}.`);\n    }\n    /** Transaction id. */ get id() {\n        return this._id;\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        throw new Error(\"Invalid kind.\");\n    }\n    /** Transaction state. */ get state() {\n        return this._state;\n    }\n    /** Transaction transport. */ get transport() {\n        return this._transport;\n    }\n    /**\n     * Sets up a function that will be called whenever the transaction state changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */ addStateChangeListener(listener, options) {\n        const onceWrapper = ()=>{\n            this.removeStateChangeListener(onceWrapper);\n            listener();\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * This is currently public so tests may spy on it.\n     * @internal\n     */ notifyStateChangeListeners() {\n        this.listeners.slice().forEach((listener)=>listener());\n    }\n    /**\n     * Removes a listener previously registered with addStateListener.\n     * @param listener - Callback function.\n     */ removeStateChangeListener(listener) {\n        this.listeners = this.listeners.filter((l)=>l !== listener);\n    }\n    logTransportError(error, message) {\n        this.logger.error(error.message);\n        this.logger.error(`Transport error occurred in ${this.typeToString()} with id ${this.id}.`);\n        this.logger.error(message);\n    }\n    /**\n     * Pass message to transport for transmission. If transport fails,\n     * the transaction user is notified by callback to onTransportError().\n     * @returns\n     * Rejects with `TransportError` if transport fails.\n     */ send(message) {\n        return this.transport.send(message).catch((error)=>{\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful\n            // make sure we convert it to a TransportError if need be.\n            if (error instanceof (0, $3b07629061696787$export$8e68de6fb26f2236)) {\n                this.onTransportError(error);\n                throw error;\n            }\n            let transportError;\n            if (error && typeof error.message === \"string\") transportError = new (0, $3b07629061696787$export$8e68de6fb26f2236)(error.message);\n            else transportError = new (0, $3b07629061696787$export$8e68de6fb26f2236)();\n            this.onTransportError(transportError);\n            throw transportError;\n        });\n    }\n    setState(state) {\n        this.logger.debug(`State change to \"${state}\" on ${this.typeToString()} with id ${this.id}.`);\n        this._state = state;\n        if (this._user.onStateChange) this._user.onStateChange(state);\n        this.notifyStateChangeListeners();\n    }\n    typeToString() {\n        return \"UnknownType\";\n    }\n}\n\n\nclass $262349653c65a01b$export$b1147c41a9d85cf5 extends (0, $08399d4a7176186c$export$febc5573c75cefb0) {\n    constructor(_request, transport, user, state, loggerCategory){\n        super(transport, user, _request.viaBranch, state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n    }\n    /** The incoming request the transaction handling. */ get request() {\n        return this._request;\n    }\n}\n\n\n/**\n * Transaction state.\n * @public\n */ var $5a6d2cd8ab50afbe$export$52a28250c602ca8a;\n(function(TransactionState) {\n    TransactionState[\"Accepted\"] = \"Accepted\";\n    TransactionState[\"Calling\"] = \"Calling\";\n    TransactionState[\"Completed\"] = \"Completed\";\n    TransactionState[\"Confirmed\"] = \"Confirmed\";\n    TransactionState[\"Proceeding\"] = \"Proceeding\";\n    TransactionState[\"Terminated\"] = \"Terminated\";\n    TransactionState[\"Trying\"] = \"Trying\";\n})($5a6d2cd8ab50afbe$export$52a28250c602ca8a = $5a6d2cd8ab50afbe$export$52a28250c602ca8a || ($5a6d2cd8ab50afbe$export$52a28250c602ca8a = {}));\n\n\nclass $81bc4312505cb83e$export$fdc050a01797e9de extends (0, $262349653c65a01b$export$b1147c41a9d85cf5) {\n    /**\n     * Constructor.\n     * Upon construction, a \"100 Trying\" reply will be immediately sent.\n     * After construction the transaction will be in the \"proceeding\" state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     * @param request - Incoming INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding, \"sip.transaction.ist\");\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        this.stopProgressExtensionTimer();\n        if (this.H) {\n            clearTimeout(this.H);\n            this.H = undefined;\n        }\n        if (this.I) {\n            clearTimeout(this.I);\n            this.I = undefined;\n        }\n        if (this.L) {\n            clearTimeout(this.L);\n            this.L = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"ist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */ receiveRequest(request) {\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // If a request retransmission is received while in the \"Proceeding\" state, the most\n                // recent provisional response that was received from the TU MUST be passed to the\n                // transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n                    if (this.lastProvisionalResponse) this.send(this.lastProvisionalResponse).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n                // While in the \"Accepted\" state, any retransmissions of the INVITE\n                // received will match this transaction state machine and will be\n                // absorbed by the machine without changing its state. These\n                // retransmissions are not passed onto the TU.\n                // https://tools.ietf.org/html/rfc6026#section-7.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) return;\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // Furthermore, while in the \"Completed\" state, if a request retransmission is\n                // received, the server SHOULD pass the response to the transport for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n                    if (!this.lastFinalResponse) throw new Error(\"Last final response undefined.\");\n                    this.send(this.lastFinalResponse).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                    });\n                    return;\n                }\n                // If an ACK is received while the server transaction is in the \"Completed\" state,\n                // the server transaction MUST transition to the \"Confirmed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed:\n                // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n                // triggered from retransmissions of the final response.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE || request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return;\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                // For good measure absorb any additional messages that arrive (should not happen).\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE || request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return;\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${request.method} request while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response.\n     * @param response - Response.\n     */ receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // The TU passes any number of provisional responses to the server\n                // transaction. So long as the server transaction is in the\n                // \"Proceeding\" state, each of these MUST be passed to the transport\n                // layer for transmission. They are not sent reliably by the\n                // transaction layer (they are not retransmitted by it) and do not cause\n                // a change in the state of the server transaction.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.lastProvisionalResponse = response;\n                    // Start the progress extension timer only for a non-100 provisional response.\n                    if (statusCode > 100) this.startProgressExtensionTimer(); // FIXME: remove\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send 1xx response.\");\n                    });\n                    return;\n                }\n                // If, while in the \"Proceeding\" state, the TU passes a 2xx response\n                // to the server transaction, the server transaction MUST pass this\n                // response to the transport layer for transmission. It is not\n                // retransmitted by the server transaction; retransmissions of 2xx\n                // responses are handled by the TU. The server transaction MUST then\n                // transition to the \"Accepted\" state.\n                // https://tools.ietf.org/html/rfc6026#section-8.5\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                // While in the \"Proceeding\" state, if the TU passes a response with\n                // status code from 300 to 699 to the server transaction, the response\n                // MUST be passed to the transport layer for transmission, and the state\n                // machine MUST enter the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send non-2xx final response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n                // While in the \"Accepted\" state, if the TU passes a 2xx response,\n                // the server transaction MUST pass the response to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc6026#section-8.7\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed:\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * Retransmit the last 2xx response. This is a noop if not in the \"accepted\" state.\n     */ retransmitAcceptedResponse() {\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted && this.lastFinalResponse) this.send(this.lastFinalResponse).catch((error)=>{\n            this.logTransportError(error, \"Failed to send 2xx response.\");\n        });\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and MUST remain in the current state.\n     * https://tools.ietf.org/html/rfc6026#section-8.8\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n    }\n    /** For logging. */ typeToString() {\n        return \"INVITE server transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */ stateTransition(newState) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed) invalidStateTransition();\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // On any state transition, stop resending provisional responses\n        this.stopProgressExtensionTimer();\n        // The purpose of the \"Accepted\" state is to absorb retransmissions of an accepted INVITE request.\n        // Any such retransmissions are absorbed entirely within the server transaction.\n        // They are not passed up to the TU since any downstream UAS cores that accepted the request have\n        // taken responsibility for reliability and will already retransmit their 2xx responses if necessary.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.L = setTimeout(()=>this.timerL(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_L);\n        // When the \"Completed\" state is entered, timer H MUST be set to fire in 64*T1 seconds for all transports.\n        // Timer H determines when the server transaction abandons retransmitting the response.\n        // If an ACK is received while the server transaction is in the \"Completed\" state,\n        // the server transaction MUST transition to the \"Confirmed\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) // FIXME: Missing timer G for unreliable transports.\n        this.H = setTimeout(()=>this.timerH(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_H);\n        // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n        // triggered from retransmissions of the final response. When this state is entered, timer I\n        // is set to fire in T4 seconds for unreliable transports, and zero seconds for reliable\n        // transports. Once timer I fires, the server MUST transition to the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed) // FIXME: This timer is not getting set correctly for unreliable transports.\n        this.I = setTimeout(()=>this.timerI(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_I);\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */ startProgressExtensionTimer() {\n        // Start the progress extension timer only for the first non-100 provisional response.\n        if (this.progressExtensionTimer === undefined) this.progressExtensionTimer = setInterval(()=>{\n            this.logger.debug(`Progress extension timer expired for INVITE server transaction ${this.id}.`);\n            if (!this.lastProvisionalResponse) throw new Error(\"Last provisional response undefined.\");\n            this.send(this.lastProvisionalResponse).catch((error)=>{\n                this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n            });\n        }, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).PROVISIONAL_RESPONSE_INTERVAL);\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer id. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */ stopProgressExtensionTimer() {\n        if (this.progressExtensionTimer !== undefined) {\n            clearInterval(this.progressExtensionTimer);\n            this.progressExtensionTimer = undefined;\n        }\n    }\n    /**\n     * While in the \"Proceeding\" state, if the TU passes a response with status code\n     * from 300 to 699 to the server transaction, the response MUST be passed to the\n     * transport layer for transmission, and the state machine MUST enter the \"Completed\" state.\n     * For unreliable transports, timer G is set to fire in T1 seconds, and is not set to fire for\n     * reliable transports. If timer G fires, the response is passed to the transport layer once\n     * more for retransmission, and timer G is set to fire in MIN(2*T1, T2) seconds. From then on,\n     * when timer G fires, the response is passed to the transport again for transmission, and\n     * timer G is reset with a value that doubles, unless that value exceeds T2, in which case\n     * it is reset with the value of T2.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */ timerG() {\n    // TODO\n    }\n    /**\n     * If timer H fires while in the \"Completed\" state, it implies that the ACK was never received.\n     * In this case, the server transaction MUST transition to the \"Terminated\" state, and MUST\n     * indicate to the TU that a transaction failure has occurred.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */ timerH() {\n        this.logger.debug(`Timer H expired for INVITE server transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n            this.logger.warn(\"ACK to negative final response was never received, terminating transaction.\");\n            this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n        }\n    }\n    /**\n     * Once timer I fires, the server MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */ timerI() {\n        this.logger.debug(`Timer I expired for INVITE server transaction ${this.id}.`);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n    /**\n     * When Timer L fires and the state machine is in the \"Accepted\" state, the machine MUST\n     * transition to the \"Terminated\" state. Once the transaction is in the \"Terminated\" state,\n     * it MUST be destroyed immediately. Timer L reflects the amount of time the server\n     * transaction could receive 2xx responses for retransmission from the\n     * TU while it is waiting to receive an ACK.\n     * https://tools.ietf.org/html/rfc6026#section-7.1\n     * https://tools.ietf.org/html/rfc6026#section-8.7\n     */ timerL() {\n        this.logger.debug(`Timer L expired for INVITE server transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\nclass $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463 extends (0, $08399d4a7176186c$export$febc5573c75cefb0) {\n    constructor(_request, transport, user, state, loggerCategory){\n        super(transport, user, $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463.makeId(_request), state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n        // The Via header field indicates the transport used for the transaction\n        // and identifies the location where the response is to be sent.  A Via\n        // header field value is added only after the transport that will be\n        // used to reach the next hop has been selected (which may involve the\n        // usage of the procedures in [4]).\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n        _request.setViaHeader(this.id, transport.protocol);\n    }\n    static makeId(request) {\n        if (request.method === \"CANCEL\") {\n            if (!request.branch) throw new Error(\"Outgoing CANCEL request without a branch.\");\n            return request.branch;\n        } else return \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n    }\n    /** The outgoing request the transaction handling. */ get request() {\n        return this._request;\n    }\n    /**\n     * A 408 to non-INVITE will always arrive too late to be useful ([3]),\n     * The client already has full knowledge of the timeout. The only\n     * information this message would convey is whether or not the server\n     * believed the transaction timed out. However, with the current design\n     * of the NIT, a client cannot do anything with this knowledge. Thus,\n     * the 408 is simply wasting network resources and contributes to the\n     * response bombardment illustrated in [3].\n     * https://tools.ietf.org/html/rfc4320#section-4.1\n     */ onRequestTimeout() {\n        if (this.user.onRequestTimeout) this.user.onRequestTimeout();\n    }\n}\n\n\n\nclass $de2fac6d73c31956$export$56b95907db972eed extends (0, $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463) {\n    /**\n     * Constructor\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2\n     * @param request - The outgoing Non-INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying, \"sip.transaction.nict\");\n        // FIXME: Timer E for unreliable transports not implemented.\n        //\n        // The \"Trying\" state is entered when the TU initiates a new client\n        // transaction with a request.  When entering this state, the client\n        // transaction SHOULD set timer F to fire in 64*T1 seconds. The request\n        // MUST be passed to the transport layer for transmission.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        this.F = setTimeout(()=>this.timerF(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_F);\n        this.send(request.toString()).catch((error)=>{\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.F) {\n            clearTimeout(this.F);\n            this.F = undefined;\n        }\n        if (this.K) {\n            clearTimeout(this.K);\n            this.K = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"nict\";\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */ receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                // If a provisional response is received while in the \"Trying\" state, the\n                // response MUST be passed to the TU, and then the client transaction\n                // SHOULD move to the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Trying\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // If a provisional response is received while in the \"Proceeding\" state,\n                // the response MUST be passed to the TU. (From Figure 6)\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) return this.user.receiveResponse(response);\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Proceeding\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // The \"Completed\" state exists to buffer any additional response\n                // retransmissions that may be received (which is why the client\n                // transaction remains there only for unreliable transports).\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                return;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                // For good measure just absorb additional response retransmissions.\n                return;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE client transaction received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure has occurred,\n     * and the client transaction SHOULD transition directly to the \"Terminated\" state.\n     * The TU will handle the fail over mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - Transport error\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated, true);\n    }\n    /** For logging. */ typeToString() {\n        return \"non-INVITE client transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */ stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n                    if (!dueToTransportError) invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // Once the client transaction enters the \"Completed\" state, it MUST set\n        // Timer K to fire in T4 seconds for unreliable transports, and zero\n        // seconds for reliable transports  The \"Completed\" state exists to\n        // buffer any additional response retransmissions that may be received\n        // (which is why the client transaction remains there only for unreliable transports).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n            if (this.F) {\n                clearTimeout(this.F);\n                this.F = undefined;\n            }\n            this.K = setTimeout(()=>this.timerK(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_K);\n        }\n        // Once the transaction is in the terminated state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * If Timer F fires while the client transaction is still in the\n     * \"Trying\" state, the client transaction SHOULD inform the TU about the\n     * timeout, and then it SHOULD enter the \"Terminated\" state.\n     * If timer F fires while in the \"Proceeding\" state, the TU MUST be informed of\n     * a timeout, and the client transaction MUST transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */ timerF() {\n        this.logger.debug(`Timer F expired for non-INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) {\n            this.onRequestTimeout();\n            this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n        }\n    }\n    /**\n     * If Timer K fires while in this (COMPLETED) state, the client transaction\n     * MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */ timerK() {\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\n\nclass $a6e6fbcb3e59f89d$export$3ddf2d174ce01153 {\n    /**\n     * Dialog constructor.\n     * @param core - User agent core.\n     * @param dialogState - Initial dialog state.\n     */ constructor(core, dialogState){\n        this.core = core;\n        this.dialogState = dialogState;\n        this.core.dialogs.set(this.id, this);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */ static initialDialogStateForUserAgentClient(outgoingRequestMessage, incomingResponseMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingResponseMessage.getHeaders(\"record-route\").reverse();\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const contact = incomingResponseMessage.parseHeader(\"contact\");\n        if (!contact) // TODO: Review to make sure this will never happen\n        throw new Error(\"Contact undefined.\");\n        if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingRequestMessage.callId;\n        const localTag = outgoingRequestMessage.fromTag;\n        const remoteTag = incomingResponseMessage.toTag;\n        if (!callId) // TODO: Review to make sure this will never happen\n        throw new Error(\"Call id undefined.\");\n        if (!localTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"From tag undefined.\");\n        if (!remoteTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingRequestMessage.from) // TODO: Review to make sure this will never happen\n        throw new Error(\"From undefined.\");\n        if (!outgoingRequestMessage.to) // TODO: Review to make sure this will never happen\n        throw new Error(\"To undefined.\");\n        const localURI = outgoingRequestMessage.from.uri;\n        const remoteURI = outgoingRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        if (!incomingResponseMessage.statusCode) throw new Error(\"Incoming response status code undefined.\");\n        const early = incomingResponseMessage.statusCode < 200 ? true : false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early: early,\n            callId: callId,\n            localTag: localTag,\n            remoteTag: remoteTag,\n            localSequenceNumber: localSequenceNumber,\n            remoteSequenceNumber: remoteSequenceNumber,\n            localURI: localURI,\n            remoteURI: remoteURI,\n            remoteTarget: remoteTarget,\n            routeSet: routeSet,\n            secure: secure\n        };\n        return dialogState;\n    }\n    /**\n     * The UAS then constructs the state of the dialog.  This state MUST be\n     * maintained for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.1\n     * @param incomingRequestMessage - Incoming request message creating dialog.\n     * @param toTag - Tag in the To field in the response to the incoming request.\n     */ static initialDialogStateForUserAgentServer(incomingRequestMessage, toTag, early = false) {\n        // If the request arrived over TLS, and the Request-URI contained a SIPS\n        // URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the request, taken in order and preserving all URI\n        // parameters.  If no Record-Route header field is present in the\n        // request, the route set MUST be set to the empty set.  This route set,\n        // even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const routeSet = incomingRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingRequestMessage.parseHeader(\"contact\");\n        if (!contact) // TODO: Review to make sure this will never happen\n        throw new Error(\"Contact undefined.\");\n        if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n        const remoteTarget = contact.uri;\n        // The remote sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The local sequence\n        // number MUST be empty.  The call identifier component of the dialog ID\n        // MUST be set to the value of the Call-ID in the request.  The local\n        // tag component of the dialog ID MUST be set to the tag in the To field\n        // in the response to the request (which always includes a tag), and the\n        // remote tag component of the dialog ID MUST be set to the tag from the\n        // From field in the request.  A UAS MUST be prepared to receive a\n        // request without a tag in the From field, in which case the tag is\n        // considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate From tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteSequenceNumber = incomingRequestMessage.cseq;\n        const localSequenceNumber = undefined;\n        const callId = incomingRequestMessage.callId;\n        const localTag = toTag;\n        const remoteTag = incomingRequestMessage.fromTag;\n        // The remote URI MUST be set to the URI in the From field, and the\n        // local URI MUST be set to the URI in the To field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteURI = incomingRequestMessage.from.uri;\n        const localURI = incomingRequestMessage.to.uri;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early: early,\n            callId: callId,\n            localTag: localTag,\n            remoteTag: remoteTag,\n            localSequenceNumber: localSequenceNumber,\n            remoteSequenceNumber: remoteSequenceNumber,\n            localURI: localURI,\n            remoteURI: remoteURI,\n            remoteTarget: remoteTarget,\n            routeSet: routeSet,\n            secure: secure\n        };\n        return dialogState;\n    }\n    /** Destructor. */ dispose() {\n        this.core.dialogs.delete(this.id);\n    }\n    /**\n     * A dialog is identified at each UA with a dialog ID, which consists of\n     * a Call-ID value, a local tag and a remote tag.  The dialog ID at each\n     * UA involved in the dialog is not the same.  Specifically, the local\n     * tag at one UA is identical to the remote tag at the peer UA.  The\n     * tags are opaque tokens that facilitate the generation of unique\n     * dialog IDs.\n     * https://tools.ietf.org/html/rfc3261#section-12\n     */ get id() {\n        return this.dialogState.id;\n    }\n    /**\n     * A dialog can also be in the \"early\" state, which occurs when it is\n     * created with a provisional response, and then it transition to the\n     * \"confirmed\" state when a 2xx final response received or is sent.\n     *\n     * Note: RFC 3261 is concise on when a dialog is \"confirmed\", but it\n     * can be a point of confusion if an INVITE dialog is \"confirmed\" after\n     * a 2xx is sent or after receiving the ACK for the 2xx response.\n     * With careful reading it can be inferred a dialog is always is\n     * \"confirmed\" when the 2xx is sent (regardless of type of dialog).\n     * However a INVITE dialog does have additional considerations\n     * when it is confirmed but an ACK has not yet been received (in\n     * particular with regard to a callee sending BYE requests).\n     */ get early() {\n        return this.dialogState.early;\n    }\n    /** Call identifier component of the dialog id. */ get callId() {\n        return this.dialogState.callId;\n    }\n    /** Local tag component of the dialog id. */ get localTag() {\n        return this.dialogState.localTag;\n    }\n    /** Remote tag component of the dialog id. */ get remoteTag() {\n        return this.dialogState.remoteTag;\n    }\n    /** Local sequence number (used to order requests from the UA to its peer). */ get localSequenceNumber() {\n        return this.dialogState.localSequenceNumber;\n    }\n    /** Remote sequence number (used to order requests from its peer to the UA). */ get remoteSequenceNumber() {\n        return this.dialogState.remoteSequenceNumber;\n    }\n    /** Local URI. */ get localURI() {\n        return this.dialogState.localURI;\n    }\n    /** Remote URI. */ get remoteURI() {\n        return this.dialogState.remoteURI;\n    }\n    /** Remote target. */ get remoteTarget() {\n        return this.dialogState.remoteTarget;\n    }\n    /**\n     * Route set, which is an ordered list of URIs. The route set is the\n     * list of servers that need to be traversed to send a request to the peer.\n     */ get routeSet() {\n        return this.dialogState.routeSet;\n    }\n    /**\n     * If the request was sent over TLS, and the Request-URI contained\n     * a SIPS URI, the \"secure\" flag is set to true. *NOT IMPLEMENTED*\n     */ get secure() {\n        return this.dialogState.secure;\n    }\n    /** The user agent core servicing this dialog. */ get userAgentCore() {\n        return this.core;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */ confirm() {\n        this.dialogState.early = false;\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     *\n     *    Note that some requests, such as INVITEs, affect several pieces of\n     *    state.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */ receiveRequest(message) {\n        // ACK guard.\n        // By convention, the handling of ACKs is the responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, ACKs have same sequence number as the associated INVITE.\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return;\n        // If the remote sequence number was not empty, but the sequence number\n        // of the request is lower than the remote sequence number, the request\n        // is out of order and MUST be rejected with a 500 (Server Internal\n        // Error) response.  If the remote sequence number was not empty, and\n        // the sequence number of the request is greater than the remote\n        // sequence number, the request is in order.  It is possible for the\n        // CSeq sequence number to be higher than the remote sequence number by\n        // more than one.  This is not an error condition, and a UAS SHOULD be\n        // prepared to receive and process requests with CSeq values more than\n        // one higher than the previous received request.  The UAS MUST then set\n        // the remote sequence number to the value of the sequence number in the\n        // CSeq header field value in the request.\n        //\n        //    If a proxy challenges a request generated by the UAC, the UAC has\n        //    to resubmit the request with credentials.  The resubmitted request\n        //    will have a new CSeq number.  The UAS will never see the first\n        //    request, and thus, it will notice a gap in the CSeq number space.\n        //    Such a gap does not represent any error condition.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (this.remoteSequenceNumber) {\n            if (message.cseq <= this.remoteSequenceNumber) throw new Error(\"Out of sequence in dialog request. Did you forget to call sequenceGuard()?\");\n            this.dialogState.remoteSequenceNumber = message.cseq;\n        }\n        // If the remote sequence number is empty, it MUST be set to the value\n        // of the sequence number in the CSeq header field value in the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.remoteSequenceNumber) this.dialogState.remoteSequenceNumber = message.cseq;\n    // When a UAS receives a target refresh request, it MUST replace the\n    // dialog's remote target URI with the URI from the Contact header field\n    // in that request, if present.\n    // https://tools.ietf.org/html/rfc3261#section-12.2.2\n    // Note: \"target refresh request\" processing delegated to sub-class.\n    }\n    /**\n     * If the dialog identifier in the 2xx response matches the dialog\n     * identifier of an existing dialog, the dialog MUST be transitioned to\n     * the \"confirmed\" state, and the route set for the dialog MUST be\n     * recomputed based on the 2xx response using the procedures of Section\n     * 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n     * constructed using the procedures of Section 12.1.2.\n     *\n     * Note that the only piece of state that is recomputed is the route\n     * set.  Other pieces of state such as the highest sequence numbers\n     * (remote and local) sent within the dialog are not recomputed.  The\n     * route set only is recomputed for backwards compatibility.  RFC\n     * 2543 did not mandate mirroring of the Record-Route header field in\n     * a 1xx, only 2xx.  However, we cannot update the entire state of\n     * the dialog, since mid-dialog requests may have been sent within\n     * the early dialog, modifying the sequence numbers, for example.\n     *\n     *  https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     */ recomputeRouteSet(message) {\n        this.dialogState.routeSet = message.getHeaders(\"record-route\").reverse();\n    }\n    /**\n     * A request within a dialog is constructed by using many of the\n     * components of the state stored as part of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n     * @param method - Outgoing request method.\n     */ createOutgoingRequestMessage(method, options) {\n        // The URI in the To field of the request MUST be set to the remote URI\n        // from the dialog state.  The tag in the To header field of the request\n        // MUST be set to the remote tag of the dialog ID.  The From URI of the\n        // request MUST be set to the local URI from the dialog state.  The tag\n        // in the From header field of the request MUST be set to the local tag\n        // of the dialog ID.  If the value of the remote or local tags is null,\n        // the tag parameter MUST be omitted from the To or From header fields,\n        // respectively.\n        //\n        //    Usage of the URI from the To and From fields in the original\n        //    request within subsequent requests is done for backwards\n        //    compatibility with RFC 2543, which used the URI for dialog\n        //    identification.  In this specification, only the tags are used for\n        //    dialog identification.  It is expected that mandatory reflection\n        //    of the original To and From URI in mid-dialog requests will be\n        //    deprecated in a subsequent revision of this specification.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const toUri = this.remoteURI;\n        const toTag = this.remoteTag;\n        const fromUri = this.localURI;\n        const fromTag = this.localTag;\n        // The Call-ID of the request MUST be set to the Call-ID of the dialog.\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.  If the local sequence number is\n        // empty, an initial value MUST be chosen using the guidelines of\n        // Section 8.1.1.5.  The method field in the CSeq header field value\n        // MUST match the method of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const callId = this.callId;\n        let cseq;\n        if (options && options.cseq) cseq = options.cseq;\n        else if (!this.dialogState.localSequenceNumber) cseq = this.dialogState.localSequenceNumber = 1; // https://tools.ietf.org/html/rfc3261#section-8.1.1.5\n        else cseq = this.dialogState.localSequenceNumber += 1;\n        // The UAC uses the remote target and route set to build the Request-URI\n        // and Route header field of the request.\n        //\n        // If the route set is empty, the UAC MUST place the remote target URI\n        // into the Request-URI.  The UAC MUST NOT add a Route header field to\n        // the request.\n        //\n        // If the route set is not empty, and the first URI in the route set\n        // contains the lr parameter (see Section 19.1.1), the UAC MUST place\n        // the remote target URI into the Request-URI and MUST include a Route\n        // header field containing the route set values in order, including all\n        // parameters.\n        //\n        // If the route set is not empty, and its first URI does not contain the\n        // lr parameter, the UAC MUST place the first URI from the route set\n        // into the Request-URI, stripping any parameters that are not allowed\n        // in a Request-URI.  The UAC MUST add a Route header field containing\n        // the remainder of the route set values in order, including all\n        // parameters.  The UAC MUST then place the remote target URI into the\n        // Route header field as the last value.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        // The lr parameter, when present, indicates that the element\n        // responsible for this resource implements the routing mechanisms\n        // specified in this document.  This parameter will be used in the\n        // URIs proxies place into Record-Route header field values, and\n        // may appear in the URIs in a pre-existing route set.\n        //\n        // This parameter is used to achieve backwards compatibility with\n        // systems implementing the strict-routing mechanisms of RFC 2543\n        // and the rfc2543bis drafts up to bis-05.  An element preparing\n        // to send a request based on a URI not containing this parameter\n        // can assume the receiving element implements strict-routing and\n        // reformat the message to preserve the information in the\n        // Request-URI.\n        // https://tools.ietf.org/html/rfc3261#section-19.1.1\n        // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n        const ruri = this.remoteTarget;\n        const routeSet = this.routeSet;\n        const extraHeaders = options && options.extraHeaders;\n        const body = options && options.body;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        const message = this.userAgentCore.makeOutgoingRequestMessage(method, ruri, fromUri, toUri, {\n            callId: callId,\n            cseq: cseq,\n            fromTag: fromTag,\n            toTag: toTag,\n            routeSet: routeSet\n        }, extraHeaders, body);\n        return message;\n    }\n    /**\n     * Increment the local sequence number by one.\n     * It feels like this should be protected, but the current authentication handling currently\n     * needs this to keep the dialog in sync when \"auto re-sends\" request messages.\n     * @internal\n     */ incrementLocalSequenceNumber() {\n        if (!this.dialogState.localSequenceNumber) throw new Error(\"Local sequence number undefined.\");\n        this.dialogState.localSequenceNumber += 1;\n    }\n    /**\n     * If the remote sequence number was not empty, but the sequence number\n     * of the request is lower than the remote sequence number, the request\n     * is out of order and MUST be rejected with a 500 (Server Internal\n     * Error) response.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param request - Incoming request to guard.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise a 500 Server Internal Error was stateless sent and request processing must stop.\n     */ sequenceGuard(message) {\n        // ACK guard.\n        // By convention, handling of unexpected ACKs is responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, we cannot reply to an \"out of sequence\" ACK.\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return true;\n        // Note: We are rejecting on \"less than or equal to\" the remote\n        // sequence number (excepting ACK whose numbers equal the requests\n        // being acknowledged or cancelled), which is the correct thing to\n        // do in our case. The only time a request with the same sequence number\n        // will show up here if is a) it is a very late retransmission of a\n        // request we already handled or b) it is a different request with the\n        // same sequence number which would be violation of the standard.\n        // Request retransmissions are absorbed by the transaction layer,\n        // so any request with a duplicate sequence number getting here\n        // would have to be a retransmission after the transaction terminated\n        // or a broken request (with unique via branch value).\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        if (this.remoteSequenceNumber && message.cseq <= this.remoteSequenceNumber) {\n            this.core.replyStateless(message, {\n                statusCode: 500\n            });\n            return false;\n        }\n        return true;\n    }\n}\n\n\n\n\n\n\n\n\n\n\n\n\n\nclass $0f79ac00a17f1010$export$815a7ced3416e5c7 extends (0, $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463) {\n    /**\n     * Constructor.\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1\n     * @param request - The outgoing INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling, \"sip.transaction.ict\");\n        /**\n         * Map of 2xx to-tag to ACK.\n         * If value is not undefined, value is the ACK which was sent.\n         * If key exists but value is undefined, a 2xx was received but the ACK not yet sent.\n         * Otherwise, a 2xx was not (yet) received for this transaction.\n         */ this.ackRetransmissionCache = new Map();\n        // FIXME: Timer A for unreliable transport not implemented\n        //\n        // If an unreliable transport is being used, the client transaction\n        // MUST start timer A with a value of T1. If a reliable transport is being used,\n        // the client transaction SHOULD NOT start timer A (Timer A controls request retransmissions).\n        // For any transport, the client transaction MUST start timer B with a value\n        // of 64*T1 seconds (Timer B controls transaction timeouts).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n        //\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        this.B = setTimeout(()=>this.timerB(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_B);\n        this.send(request.toString()).catch((error)=>{\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        if (this.D) {\n            clearTimeout(this.D);\n            this.D = undefined;\n        }\n        if (this.M) {\n            clearTimeout(this.M);\n            this.M = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"ict\";\n    }\n    /**\n     * ACK a 2xx final response.\n     *\n     * The transaction includes the ACK only if the final response was not a 2xx response (the\n     * transaction will generate and send the ACK to the transport automagically). If the\n     * final response was a 2xx, the ACK is not considered part of the transaction (the\n     * transaction user needs to generate and send the ACK).\n     *\n     * This library is not strictly RFC compliant with regard to ACK handling for 2xx final\n     * responses. Specifically, retransmissions of ACKs to a 2xx final responses is handled\n     * by the transaction layer (instead of the UAC core). The \"standard\" approach is for\n     * the UAC core to receive all 2xx responses and manage sending ACK retransmissions to\n     * the transport directly. Herein the transaction layer manages sending ACKs to 2xx responses\n     * and any retransmissions of those ACKs as needed.\n     *\n     * @param ack - The outgoing ACK request.\n     */ ackResponse(ack) {\n        const toTag = ack.toTag;\n        if (!toTag) throw new Error(\"To tag undefined.\");\n        const id = \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n        ack.setViaHeader(id, this.transport.protocol);\n        this.ackRetransmissionCache.set(toTag, ack); // Add to ACK retransmission cache\n        this.send(ack.toString()).catch((error)=>{\n            this.logTransportError(error, \"Failed to send ACK to 2xx response.\");\n        });\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */ receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling:\n                // If the client transaction receives a provisional response while in\n                // the \"Calling\" state, it transitions to the \"Proceeding\" state. In the\n                // \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or\n                // \"Proceeding\" states, the client transaction MUST transition to\n                // the \"Accepted\" state... The 2xx response MUST be passed up to the TU.\n                // The client transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // In the \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or \"Proceeding\" states,\n                // the client transaction MUST transition to the \"Accepted\" state...\n                // The 2xx response MUST be passed up to the TU. The client\n                // transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n                // The purpose of the \"Accepted\" state is to allow the client\n                // transaction to continue to exist to receive, and pass to the TU,\n                // any retransmissions of the 2xx response and any additional 2xx\n                // responses from other branches of the INVITE if it forked\n                // downstream. Timer M reflects the amount of time that the\n                // transaction user will wait for such messages.\n                //\n                // Any 2xx responses that match this client transaction and that are\n                // received while in the \"Accepted\" state MUST be passed up to the\n                // TU. The client transaction MUST NOT generate an ACK to the 2xx\n                // response. The client transaction takes no further action.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    // NOTE: This implementation herein is intentionally not RFC compliant.\n                    // While the first 2xx response for a given branch is passed up to the TU,\n                    // retransmissions of 2xx responses are absorbed and the ACK associated\n                    // with the original response is resent. This approach is taken because\n                    // our current transaction users are not currently in a good position to\n                    // deal with 2xx retransmission. This SHOULD NOT cause any compliance issues - ;)\n                    //\n                    // If we don't have a cache hit, pass the response to the TU.\n                    if (!this.ackRetransmissionCache.has(response.toTag)) {\n                        this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                        if (this.user.receiveResponse) this.user.receiveResponse(response);\n                        return;\n                    }\n                    // If we have a cache hit, try pulling the ACK from cache and retransmitting it.\n                    const ack = this.ackRetransmissionCache.get(response.toTag);\n                    if (ack) {\n                        this.send(ack.toString()).catch((error)=>{\n                            this.logTransportError(error, \"Failed to send retransmission of ACK to 2xx response.\");\n                        });\n                        return;\n                    }\n                    // If an ACK was not found in cache then we have received a retransmitted 2xx\n                    // response before the TU responded to the original response (we don't have an ACK yet).\n                    // So discard this response under the assumption that the TU will eventually\n                    // get us a ACK for the original response.\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // Any retransmissions of a response with status code 300-699 that\n                // are received while in the \"Completed\" state MUST cause the ACK to\n                // be re-passed to the transport layer for retransmission, but the\n                // newly received response MUST NOT be passed up to the TU.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.ack(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        // Any response received that does not match an existing client\n        // transaction state machine is simply dropped. (Implementations are,\n        // of course, free to log or do other implementation-specific things\n        // with such responses, but the implementer should be sure to consider\n        // the impact of large numbers of malicious stray responses.)\n        // https://tools.ietf.org/html/rfc6026#section-7.2\n        const message = `Received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure\n     * has occurred, and the client transaction SHOULD transition directly\n     * to the \"Terminated\" state.  The TU will handle the failover\n     * mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - The error.\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated, true);\n    }\n    /** For logging. */ typeToString() {\n        return \"INVITE client transaction\";\n    }\n    ack(response) {\n        // The ACK request constructed by the client transaction MUST contain\n        // values for the Call-ID, From, and Request-URI that are equal to the\n        // values of those header fields in the request passed to the transport\n        // by the client transaction (call this the \"original request\"). The To\n        // header field in the ACK MUST equal the To header field in the\n        // response being acknowledged, and therefore will usually differ from\n        // the To header field in the original request by the addition of the\n        // tag parameter. The ACK MUST contain a single Via header field, and\n        // this MUST be equal to the top Via header field of the original\n        // request. The CSeq header field in the ACK MUST contain the same\n        // value for the sequence number as was present in the original request,\n        // but the method parameter MUST be equal to \"ACK\".\n        //\n        // If the INVITE request whose response is being acknowledged had Route\n        // header fields, those header fields MUST appear in the ACK. This is\n        // to ensure that the ACK can be routed properly through any downstream\n        // stateless proxies.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.3\n        const ruri = this.request.ruri;\n        const callId = this.request.callId;\n        const cseq = this.request.cseq;\n        const from = this.request.getHeader(\"from\");\n        const to = response.getHeader(\"to\");\n        const via = this.request.getHeader(\"via\");\n        const route = this.request.getHeader(\"route\");\n        if (!from) throw new Error(\"From undefined.\");\n        if (!to) throw new Error(\"To undefined.\");\n        if (!via) throw new Error(\"Via undefined.\");\n        let ack = `ACK ${ruri} SIP/2.0\\r\\n`;\n        if (route) ack += `Route: ${route}\\r\\n`;\n        ack += `Via: ${via}\\r\\n`;\n        ack += `To: ${to}\\r\\n`;\n        ack += `From: ${from}\\r\\n`;\n        ack += `Call-ID: ${callId}\\r\\n`;\n        ack += `CSeq: ${cseq} ACK\\r\\n`;\n        ack += `Max-Forwards: 70\\r\\n`;\n        ack += `Content-Length: 0\\r\\n\\r\\n`;\n        // TOOO: \"User-Agent\" header\n        this.send(ack).catch((error)=>{\n            this.logTransportError(error, \"Failed to send ACK to non-2xx response.\");\n        });\n        return;\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */ stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n                    if (!dueToTransportError) invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        // The client transaction MUST start Timer D when it enters the \"Completed\" state\n        // for any reason, with a value of at least 32 seconds for unreliable transports,\n        // and a value of zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.D = setTimeout(()=>this.timerD(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_D);\n        // The client transaction MUST transition to the \"Accepted\" state,\n        // and Timer M MUST be started with a value of 64*T1.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.M = setTimeout(()=>this.timerM(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_M);\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * When timer A fires, the client transaction MUST retransmit the\n     * request by passing it to the transport layer, and MUST reset the\n     * timer with a value of 2*T1.\n     * When timer A fires 2*T1 seconds later, the request MUST be\n     * retransmitted again (assuming the client transaction is still in this\n     * state). This process MUST continue so that the request is\n     * retransmitted with intervals that double after each transmission.\n     * These retransmissions SHOULD only be done while the client\n     * transaction is in the \"Calling\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */ timerA() {\n    // TODO\n    }\n    /**\n     * If the client transaction is still in the \"Calling\" state when timer\n     * B fires, the client transaction SHOULD inform the TU that a timeout\n     * has occurred.  The client transaction MUST NOT generate an ACK.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */ timerB() {\n        this.logger.debug(`Timer B expired for INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling) {\n            this.onRequestTimeout();\n            this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n        }\n    }\n    /**\n     * If Timer D fires while the client transaction is in the \"Completed\" state,\n     * the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */ timerD() {\n        this.logger.debug(`Timer D expired for INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n    /**\n     * If Timer M fires while the client transaction is in the \"Accepted\"\n     * state, the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */ timerM() {\n        this.logger.debug(`Timer M expired for INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\n\n\n\n\n\n\nclass $2197579a8ac6d9b3$export$7c212e7e192429f3 {\n    constructor(transactionConstructor, core, message, delegate){\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.challenged = false;\n        this.stale = false;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-client\");\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */ get transaction() {\n        if (!this._transaction) throw new Error(\"Transaction undefined.\");\n        return this._transaction;\n    }\n    /**\n     * Since requests other than INVITE are responded to immediately, sending a\n     * CANCEL for a non-INVITE request would always create a race condition.\n     * A CANCEL request SHOULD NOT be sent to cancel a request other than INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-9.1\n     * @param options - Cancel options bucket.\n     */ cancel(reason, options = {}) {\n        if (!this.transaction) throw new Error(\"Transaction undefined.\");\n        if (!this.message.to) throw new Error(\"To undefined.\");\n        if (!this.message.from) throw new Error(\"From undefined.\");\n        // The following procedures are used to construct a CANCEL request.  The\n        // Request-URI, Call-ID, To, the numeric part of CSeq, and From header\n        // fields in the CANCEL request MUST be identical to those in the\n        // request being cancelled, including tags.  A CANCEL constructed by a\n        // client MUST have only a single Via header field value matching the\n        // top Via value in the request being cancelled.  Using the same values\n        // for these header fields allows the CANCEL to be matched with the\n        // request it cancels (Section 9.2 indicates how such matching occurs).\n        // However, the method part of the CSeq header field MUST have a value\n        // of CANCEL.  This allows it to be identified and processed as a\n        // transaction in its own right (See Section 17).\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        const message = this.core.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL, this.message.ruri, this.message.from.uri, this.message.to.uri, {\n            toTag: this.message.toTag,\n            fromTag: this.message.fromTag,\n            callId: this.message.callId,\n            cseq: this.message.cseq\n        }, options.extraHeaders);\n        // TODO: Revisit this.\n        // The CANCEL needs to use the same branch parameter so that\n        // it matches the INVITE transaction, but this is a hacky way to do this.\n        // Or at the very least not well documented. If the the branch parameter\n        // is set on the outgoing request, the transaction will use it.\n        // Otherwise the transaction will make a new one.\n        message.branch = this.message.branch;\n        if (this.message.headers.Route) message.headers.Route = this.message.headers.Route;\n        if (reason) message.setHeader(\"Reason\", reason);\n        // If no provisional response has been received, the CANCEL request MUST\n        // NOT be sent; rather, the client MUST wait for the arrival of a\n        // provisional response before sending the request. If the original\n        // request has generated a final response, the CANCEL SHOULD NOT be\n        // sent, as it is an effective no-op, since CANCEL has no effect on\n        // requests that have already generated a final response.\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        if (this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) new $2197579a8ac6d9b3$export$7c212e7e192429f3((0, $de2fac6d73c31956$export$56b95907db972eed), this.core, message);\n        else this.transaction.addStateChangeListener(()=>{\n            if (this.transaction && this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) new $2197579a8ac6d9b3$export$7c212e7e192429f3((0, $de2fac6d73c31956$export$56b95907db972eed), this.core, message);\n        }, {\n            once: true\n        });\n        return message;\n    }\n    /**\n     * If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n     * response is received, the UAC SHOULD follow the authorization\n     * procedures of Section 22.2 and Section 22.3 to retry the request with\n     * credentials.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n     * 22 Usage of HTTP Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22\n     * 22.1 Framework\n     * https://tools.ietf.org/html/rfc3261#section-22.1\n     * 22.2 User-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.2\n     * 22.3 Proxy-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.3\n     *\n     * FIXME: This \"guard for and retry the request with credentials\"\n     * implementation is not complete and at best minimally passable.\n     * @param response - The incoming response to guard.\n     * @param dialog - If defined, the dialog within which the response was received.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise the request is retried with credentials and current request processing must stop.\n     */ authenticationGuard(message, dialog) {\n        const statusCode = message.statusCode;\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        // If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n        // response is received, the UAC SHOULD follow the authorization\n        // procedures of Section 22.2 and Section 22.3 to retry the request with\n        // credentials.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        if (statusCode !== 401 && statusCode !== 407) return true;\n        // Get and parse the appropriate WWW-Authenticate or Proxy-Authenticate header.\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let challenge;\n        let authorizationHeaderName;\n        if (statusCode === 401) {\n            challenge = message.parseHeader(\"www-authenticate\");\n            authorizationHeaderName = \"authorization\";\n        } else {\n            challenge = message.parseHeader(\"proxy-authenticate\");\n            authorizationHeaderName = \"proxy-authorization\";\n        }\n        // Verify it seems a valid challenge.\n        if (!challenge) {\n            this.logger.warn(statusCode + \" with wrong or missing challenge, cannot authenticate\");\n            return true;\n        }\n        // Avoid infinite authentications.\n        if (this.challenged && (this.stale || challenge.stale !== true)) {\n            this.logger.warn(statusCode + \" apparently in authentication loop, cannot authenticate\");\n            return true;\n        }\n        // Get credentials.\n        if (!this.credentials) {\n            this.credentials = this.core.configuration.authenticationFactory();\n            if (!this.credentials) {\n                this.logger.warn(\"Unable to obtain credentials, cannot authenticate\");\n                return true;\n            }\n        }\n        // Verify that the challenge is really valid.\n        if (!this.credentials.authenticate(this.message, challenge)) return true;\n        this.challenged = true;\n        if (challenge.stale) this.stale = true;\n        // If response to out of dialog request, assume incrementing the CSeq will suffice.\n        let cseq = this.message.cseq += 1;\n        // If response to in dialog request, get a valid next CSeq number.\n        if (dialog && dialog.localSequenceNumber) {\n            dialog.incrementLocalSequenceNumber();\n            cseq = this.message.cseq = dialog.localSequenceNumber;\n        }\n        this.message.setHeader(\"cseq\", cseq + \" \" + this.message.method);\n        this.message.setHeader(authorizationHeaderName, this.credentials.toString());\n        // Calling init (again) will swap out our existing client transaction with a new one.\n        // FIXME: HACK: An assumption is being made here that there is nothing that needs to\n        // be cleaned up beyond the client transaction which is being replaced. For example,\n        // it is assumed that no early dialogs have been created.\n        this.init();\n        return false;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     */ onRequestTimeout() {\n        this.logger.warn(\"User agent client request timed out. Generating internal 408 Request Timeout.\");\n        const message = new (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)();\n        message.statusCode = 408;\n        message.reasonPhrase = \"Request Timeout\";\n        this.receiveResponse(message);\n        return;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     * @param error - Transport error\n     */ onTransportError(error) {\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error. Generating internal 503 Service Unavailable.\");\n        const message = new (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)();\n        message.statusCode = 503;\n        message.reasonPhrase = \"Service Unavailable\";\n        this.receiveResponse(message);\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */ receiveResponse(message) {\n        if (!this.authenticationGuard(message)) return;\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        switch(true){\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) this.delegate.onTrying({\n                    message: message\n                });\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) this.delegate.onProgress({\n                    message: message\n                });\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onAccept) this.delegate.onAccept({\n                    message: message\n                });\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onRedirect) this.delegate.onRedirect({\n                    message: message\n                });\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onReject) this.delegate.onReject({\n                    message: message\n                });\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onRequestTimeout: ()=>this.onRequestTimeout(),\n            onStateChange: (newState)=>{\n                if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentClients.delete(userAgentClientId);\n                    // FIXME: HACK: Our transaction may have been swapped out with a new one\n                    // post authentication (see above), so make sure to only to dispose of\n                    // ourselves if this terminating transaction is our current transaction.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    if (transaction === this._transaction) this.dispose();\n                }\n            },\n            onTransportError: (error)=>this.onTransportError(error),\n            receiveResponse: (message)=>this.receiveResponse(message)\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentClientId = transaction.id + transaction.request.method;\n        this.core.userAgentClients.set(userAgentClientId, this);\n    }\n}\n\n\nclass $d9aa6ae1832a414e$export$630de64a253e8ece extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n        dialog.dispose();\n    }\n}\n\n\n\n\n\nclass $0cbd58c5a3fb42c8$export$df10dc20c866a1e6 extends (0, $262349653c65a01b$export$b1147c41a9d85cf5) {\n    /**\n     * Constructor.\n     * After construction the transaction will be in the \"trying\": state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     * @param request - Incoming Non-INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying, \"sip.transaction.nist\");\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.J) {\n            clearTimeout(this.J);\n            this.J = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"nist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    receiveRequest(request) {\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // If a retransmission of the request is received while in the \"Proceeding\" state,\n                // the most recently sent provisional response MUST be passed to the transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) throw new Error(\"Last response undefined.\");\n                this.send(this.lastResponse).catch((error)=>{\n                    this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                });\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // While in the \"Completed\" state, the server transaction MUST pass the final response to the transport\n                // layer for retransmission whenever a retransmission of the request is received. Any other final responses\n                // passed by the TU to the server transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) throw new Error(\"Last response undefined.\");\n                this.send(this.lastResponse).catch((error)=>{\n                    this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                });\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response. 101-199 not allowed per RFC 4320.\n     * @param response - Response to send.\n     */ receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        // An SIP element MUST NOT send any provisional response with a\n        // Status-Code other than 100 to a non-INVITE request.\n        // An SIP element MUST NOT respond to a non-INVITE request with a\n        // Status-Code of 100 over any unreliable transport, such as UDP,\n        // before the amount of time it takes a client transaction's Timer E to be reset to T2.\n        // An SIP element MAY respond to a non-INVITE request with a\n        // Status-Code of 100 over a reliable transport at any time.\n        // https://tools.ietf.org/html/rfc4320#section-4.1\n        if (statusCode > 100 && statusCode <= 199) throw new Error(\"Provisional response other than 100 not allowed.\");\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                // While in the \"Trying\" state, if the TU passes a provisional response\n                // to the server transaction, the server transaction MUST enter the \"Proceeding\" state.\n                // The response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 100 && statusCode < 200) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send provisional response.\");\n                    });\n                    return;\n                }\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // Any further provisional responses that are received from the TU while\n                // in the \"Proceeding\" state MUST be passed to the transport layer for transmission.\n                // If the TU passes a final response (status codes 200-699) to the server while in\n                // the \"Proceeding\" state, the transaction MUST enter the \"Completed\" state, and\n                // the response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // Any other final responses passed by the TU to the server\n                // transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                return;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and SHOULD transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.4\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated, true);\n    }\n    /** For logging. */ typeToString() {\n        return \"non-INVITE server transaction\";\n    }\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n                    if (!dueToTransportError) invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // When the server transaction enters the \"Completed\" state, it MUST set Timer J to fire\n        // in 64*T1 seconds for unreliable transports, and zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.J = setTimeout(()=>this.timerJ(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_J);\n        // The server transaction MUST be destroyed the instant it enters the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        this.setState(newState);\n    }\n    /**\n     * The server transaction remains in this state until Timer J fires,\n     * at which point it MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     */ timerJ() {\n        this.logger.debug(`Timer J expired for NON-INVITE server transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\n\n\n\n\nclass $22662cbf0aefade3$export$b027d5103a9e8145 {\n    constructor(transactionConstructor, core, message, delegate){\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-server\");\n        this.toTag = message.toTag ? message.toTag : (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)();\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */ get transaction() {\n        if (!this._transaction) throw new Error(\"Transaction undefined.\");\n        return this._transaction;\n    }\n    accept(options = {\n        statusCode: 200\n    }) {\n        if (!this.acceptable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 200 || statusCode > 299) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const response = this.reply(options);\n        return response;\n    }\n    progress(options = {\n        statusCode: 180\n    }) {\n        if (!this.progressable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 101 || statusCode > 199) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const response = this.reply(options);\n        return response;\n    }\n    redirect(contacts, options = {\n        statusCode: 302\n    }) {\n        if (!this.redirectable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not redirectable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 300 || statusCode > 399) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const contactHeaders = new Array();\n        contacts.forEach((contact)=>contactHeaders.push(`Contact: ${contact.toString()}`));\n        options.extraHeaders = (options.extraHeaders || []).concat(contactHeaders);\n        const response = this.reply(options);\n        return response;\n    }\n    reject(options = {\n        statusCode: 480\n    }) {\n        if (!this.rejectable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not rejectable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 400 || statusCode > 699) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const response = this.reply(options);\n        return response;\n    }\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    trying(options) {\n        if (!this.tryingable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not tryingable in state ${this.transaction.state}.`);\n        const response = this.reply({\n            statusCode: 100\n        });\n        return response;\n    }\n    /**\n     * If the UAS did not find a matching transaction for the CANCEL\n     * according to the procedure above, it SHOULD respond to the CANCEL\n     * with a 481 (Call Leg/Transaction Does Not Exist).  If the transaction\n     * for the original request still exists, the behavior of the UAS on\n     * receiving a CANCEL request depends on whether it has already sent a\n     * final response for the original request.  If it has, the CANCEL\n     * request has no effect on the processing of the original request, no\n     * effect on any session state, and no effect on the responses generated\n     * for the original request.  If the UAS has not issued a final response\n     * for the original request, its behavior depends on the method of the\n     * original request.  If the original request was an INVITE, the UAS\n     * SHOULD immediately respond to the INVITE with a 487 (Request\n     * Terminated).  A CANCEL request has no impact on the processing of\n     * transactions with any other method defined in this specification.\n     * https://tools.ietf.org/html/rfc3261#section-9.2\n     * @param request - Incoming CANCEL request.\n     */ receiveCancel(message) {\n        // Note: Currently CANCEL is being handled as a special case.\n        // No UAS is created to handle the CANCEL and the response to\n        // it CANCEL is being handled statelessly by the user agent core.\n        // As such, there is currently no way to externally impact the\n        // response to the a CANCEL request.\n        if (this.delegate && this.delegate.onCancel) this.delegate.onCancel(message);\n    }\n    get acceptable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get progressable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return false; // https://tools.ietf.org/html/rfc4320#section-4.1\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get redirectable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get rejectable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get tryingable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    /**\n     * When a UAS wishes to construct a response to a request, it follows\n     * the general procedures detailed in the following subsections.\n     * Additional behaviors specific to the response code in question, which\n     * are not detailed in this section, may also be required.\n     *\n     * Once all procedures associated with the creation of a response have\n     * been completed, the UAS hands the response back to the server\n     * transaction from which it received the request.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.6\n     * @param statusCode - Status code to reply with.\n     * @param options - Reply options bucket.\n     */ reply(options) {\n        if (!options.toTag && options.statusCode !== 100) options.toTag = this.toTag;\n        options.userAgent = options.userAgent || this.core.configuration.userAgentHeaderFieldValue;\n        options.supported = options.supported || this.core.configuration.supportedOptionTagsResponse;\n        const response = (0, $fa12ff70cdbe77c4$export$4a2399f09281a6d4)(this.message, options);\n        this.transaction.receiveResponse(options.statusCode, response.message);\n        return response;\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onStateChange: (newState)=>{\n                if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentServers.delete(userAgentServerId);\n                    this.dispose();\n                }\n            },\n            onTransportError: (error)=>{\n                this.logger.error(error.message);\n                if (this.delegate && this.delegate.onTransportError) this.delegate.onTransportError(error);\n                else this.logger.error(\"User agent server response transport error.\");\n            }\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentServerId = transaction.id;\n        this.core.userAgentServers.set(transaction.id, this);\n    }\n}\n\n\nclass $69084a386acad000$export$6a29e9371256c3d0 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n\nclass $044342eadbfb8900$export$b308e67c32b6f112 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\nclass $e92497b459586ef1$export$772b8f02f1941c4b extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\nclass $783e517297d65771$export$3602b2fd01d6e2fe extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n    }\n}\n\n\n\n\nclass $08a363fd15b101f9$export$5c5e9b9267eb32a0 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), core, message, delegate);\n    }\n}\n\n\n\n\n\nclass $f19ef72855eb101d$export$151371809900896b extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction $f5249c700e8ff4ea$var$instanceOfDialog(object) {\n    return object.userAgentCore !== undefined;\n}\nclass $f5249c700e8ff4ea$export$ab41001c00baeb2c extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    /**\n     * NOTIFY UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog NOTIFY, UserAgentCore for out of dialog NOTIFY (deprecated).\n     * @param message - Incoming NOTIFY request message.\n     */ constructor(dialogOrCore, message, delegate){\n        const userAgentCore = $f5249c700e8ff4ea$var$instanceOfDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n\nclass $a8523058b2fef33d$export$424dbb5d332f10b4 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PRACK, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n        dialog.signalingStateTransition(message);\n    }\n}\n\n\n\n\nclass $3d5206d14e2a891b$export$e1cce83311913204 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), dialog.userAgentCore, message, delegate);\n        // Update dialog signaling state with offer/answer in body\n        dialog.signalingStateTransition(message);\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */ accept(options = {\n        statusCode: 200\n    }) {\n        if (options.body) // Update dialog signaling state with offer/answer in body\n        this.dialog.signalingStateTransition(options.body);\n        return super.accept(options);\n    }\n}\n\n\n\n\n\nclass $12099d1a10ca0749$export$6c7f5ec32d36fb7e extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE, options);\n        super((0, $0f79ac00a17f1010$export$815a7ced3416e5c7), dialog.userAgentCore, message, delegate);\n        this.delegate = delegate;\n        dialog.signalingStateTransition(message);\n        // FIXME: TODO: next line obviously needs to be improved...\n        dialog.reinviteUserAgentClient = this; // let the dialog know re-invite request sent\n        this.dialog = dialog;\n    }\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message, this.dialog)) return;\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        switch(true){\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) this.delegate.onTrying({\n                    message: message\n                });\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) this.delegate.onProgress({\n                    message: message,\n                    session: this.dialog,\n                    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                    prack: (options)=>{\n                        throw new Error(\"Unimplemented.\");\n                    }\n                });\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Update dialog signaling state with offer/answer in body\n                this.dialog.signalingStateTransition(message);\n                if (this.delegate && this.delegate.onAccept) this.delegate.onAccept({\n                    message: message,\n                    session: this.dialog,\n                    ack: (options)=>{\n                        const outgoingAckRequest = this.dialog.ack(options);\n                        return outgoingAckRequest;\n                    }\n                });\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onRedirect) this.delegate.onRedirect({\n                    message: message\n                });\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onReject) this.delegate.onReject({\n                    message: message\n                });\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n}\n\n\n\n\nclass $03c131d0db7aea8c$export$5bc130a72a84e472 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $81bc4312505cb83e$export$fdc050a01797e9de), dialog.userAgentCore, message, delegate);\n        dialog.reinviteUserAgentServer = this;\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */ accept(options = {\n        statusCode: 200\n    }) {\n        // FIXME: The next two lines SHOULD go away, but I suppose it's technically harmless...\n        // These are here because some versions of SIP.js prior to 0.13.8 set the route set\n        // of all in dialog ACKs based on the Record-Route headers in the associated 2xx\n        // response. While this worked for dialog forming 2xx responses, it was technically\n        // broken for re-INVITE ACKS as it only worked if the UAS populated the Record-Route\n        // headers in the re-INVITE 2xx response (which is not required and a waste of bandwidth\n        // as the should be ignored if present in re-INVITE ACKS) and the UAS populated\n        // the Record-Route headers with the correct values (would be weird not too, but...).\n        // Anyway, for now the technically useless Record-Route headers are being added\n        // to maintain \"backwards compatibility\" with the older broken versions of SIP.js.\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(this.dialog.routeSet.map((route)=>`Record-Route: ${route}`));\n        // Send and return the response\n        const response = super.accept(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        if (options.body) // Update dialog signaling state with offer/answer in body\n        this.dialog.signalingStateTransition(options.body);\n        // Update dialog\n        this.dialog.reConfirm();\n        return result;\n    }\n    /**\n     * Update the dialog signaling state on a 1xx response.\n     * @param options - Progress options bucket.\n     */ progress(options = {\n        statusCode: 180\n    }) {\n        // Send and return the response\n        const response = super.progress(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        // Update dialog signaling state\n        if (options.body) this.dialog.signalingStateTransition(options.body);\n        return result;\n    }\n    /**\n     * TODO: Not Yet Supported\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    redirect(contacts, options = {\n        statusCode: 302\n    }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * 3.1 Background on Re-INVITE Handling by UASs\n     * An error response to a re-INVITE has the following semantics.  As\n     * specified in Section 12.2.2 of RFC 3261 [RFC3261], if a re-INVITE is\n     * rejected, no state changes are performed.\n     * https://tools.ietf.org/html/rfc6141#section-3.1\n     * @param options - Reject options bucket.\n     */ reject(options = {\n        statusCode: 488\n    }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        return super.reject(options);\n    }\n}\n\n\n\n\n\nclass $88db9e488f43f678$export$7ac04b273f84cb0e extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction $61a4eb8bc96512de$var$instanceOfSessionDialog(object) {\n    return object.userAgentCore !== undefined;\n}\nclass $61a4eb8bc96512de$export$dac239e67229cfb6 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    /**\n     * REFER UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog REFER, UserAgentCore for out of dialog REFER.\n     * @param message - Incoming REFER request message.\n     */ constructor(dialogOrCore, message, delegate){\n        const userAgentCore = $61a4eb8bc96512de$var$instanceOfSessionDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), userAgentCore, message, delegate);\n    }\n}\n\n\n\nclass $ceae0939ee23f36b$export$4f1908a0a1a41606 extends (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153) {\n    constructor(initialTransaction, core, state, delegate){\n        super(core, state);\n        this.initialTransaction = initialTransaction;\n        /** The state of the offer/answer exchange. */ this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial;\n        /** True if waiting for an ACK to the initial transaction 2xx (UAS only). */ this.ackWait = false;\n        /** True if processing an ACK to the initial transaction 2xx (UAS only). */ this.ackProcessing = false;\n        this.delegate = delegate;\n        if (initialTransaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) // If we're created by an invite server transaction, we're\n        // going to be waiting for an ACK if are to be confirmed.\n        this.ackWait = true;\n        // If we're confirmed upon creation start the retransmitting whatever\n        // the 2xx final response was that confirmed us into existence.\n        if (!this.early) this.start2xxRetransmissionTimer();\n        this.signalingStateTransition(initialTransaction.request);\n        this.logger = core.loggerFactory.getLogger(\"sip.invite-dialog\");\n        this.logger.log(`INVITE dialog ${this.id} constructed`);\n    }\n    dispose() {\n        super.dispose();\n        this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed;\n        this._offer = undefined;\n        this._answer = undefined;\n        if (this.invite2xxTimer) {\n            clearTimeout(this.invite2xxTimer);\n            this.invite2xxTimer = undefined;\n        }\n        // The UAS MUST still respond to any pending requests received for that\n        // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n        // be generated to those pending requests.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.2\n        // TODO:\n        // this.userAgentServers.forEach((uas) => uas.reply(487));\n        this.logger.log(`INVITE dialog ${this.id} destroyed`);\n    }\n    // FIXME: Need real state machine\n    get sessionState() {\n        if (this.early) return (0, $12c24789242f875e$export$84bf1aca7aacb716).Early;\n        else if (this.ackWait) return (0, $12c24789242f875e$export$84bf1aca7aacb716).AckWait;\n        else if (this._signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed) return (0, $12c24789242f875e$export$84bf1aca7aacb716).Terminated;\n        else return (0, $12c24789242f875e$export$84bf1aca7aacb716).Confirmed;\n    }\n    /** The state of the offer/answer exchange. */ get signalingState() {\n        return this._signalingState;\n    }\n    /** The current offer. Undefined unless signaling state HaveLocalOffer, HaveRemoteOffer, of Stable. */ get offer() {\n        return this._offer;\n    }\n    /** The current answer. Undefined unless signaling state Stable. */ get answer() {\n        return this._answer;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */ confirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.early) this.start2xxRetransmissionTimer();\n        super.confirm();\n    }\n    /** Re-confirm the dialog. Only matters if handling re-INVITE request. */ reConfirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.reinviteUserAgentServer) this.startReInvite2xxRetransmissionTimer();\n    }\n    /**\n     * The UAC core MUST generate an ACK request for each 2xx received from\n     * the transaction layer.  The header fields of the ACK are constructed\n     * in the same way as for any request sent within a dialog (see Section\n     * 12) with the exception of the CSeq and the header fields related to\n     * authentication.  The sequence number of the CSeq header field MUST be\n     * the same as the INVITE being acknowledged, but the CSeq method MUST\n     * be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n     * the 2xx contains an offer (based on the rules above), the ACK MUST\n     * carry an answer in its body.  If the offer in the 2xx response is not\n     * acceptable, the UAC core MUST generate a valid answer in the ACK and\n     * then send a BYE immediately.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     * @param options - ACK options bucket.\n     */ ack(options = {}) {\n        this.logger.log(`INVITE dialog ${this.id} sending ACK request`);\n        let transaction;\n        if (this.reinviteUserAgentClient) {\n            // We're sending ACK for a re-INVITE\n            if (!(this.reinviteUserAgentClient.transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            transaction = this.reinviteUserAgentClient.transaction;\n            this.reinviteUserAgentClient = undefined;\n        } else {\n            // We're sending ACK for the initial INVITE\n            if (!(this.initialTransaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Initial transaction not instance of InviteClientTransaction.\");\n            transaction = this.initialTransaction;\n        }\n        const message = this.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK, {\n            cseq: transaction.request.cseq,\n            extraHeaders: options.extraHeaders,\n            body: options.body\n        });\n        transaction.ackResponse(message); // See InviteClientTransaction for details.\n        this.signalingStateTransition(message);\n        return {\n            message: message\n        };\n    }\n    /**\n     * Terminating a Session\n     *\n     * This section describes the procedures for terminating a session\n     * established by SIP.  The state of the session and the state of the\n     * dialog are very closely related.  When a session is initiated with an\n     * INVITE, each 1xx or 2xx response from a distinct UAS creates a\n     * dialog, and if that response completes the offer/answer exchange, it\n     * also creates a session.  As a result, each session is \"associated\"\n     * with a single dialog - the one which resulted in its creation.  If an\n     * initial INVITE generates a non-2xx final response, that terminates\n     * all sessions (if any) and all dialogs (if any) that were created\n     * through responses to the request.  By virtue of completing the\n     * transaction, a non-2xx final response also prevents further sessions\n     * from being created as a result of the INVITE.  The BYE request is\n     * used to terminate a specific session or attempted session.  In this\n     * case, the specific session is the one with the peer UA on the other\n     * side of the dialog.  When a BYE is received on a dialog, any session\n     * associated with that dialog SHOULD terminate.  A UA MUST NOT send a\n     * BYE outside of a dialog.  The caller's UA MAY send a BYE for either\n     * confirmed or early dialogs, and the callee's UA MAY send a BYE on\n     * confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n     *\n     * However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n     * until it has received an ACK for its 2xx response or until the server\n     * transaction times out.  If no SIP extensions have defined other\n     * application layer states associated with the dialog, the BYE also\n     * terminates the dialog.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-15\n     * FIXME: Make these proper Exceptions...\n     * @param options - BYE options bucket.\n     * @returns\n     * Throws `Error` if callee's UA attempts a BYE on an early dialog.\n     * Throws `Error` if callee's UA attempts a BYE on a confirmed dialog\n     *                while it's waiting on the ACK for its 2xx response.\n     */ bye(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending BYE request`);\n        // The caller's UA MAY send a BYE for either\n        // confirmed or early dialogs, and the callee's UA MAY send a BYE on\n        // confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n        //\n        // However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n        // until it has received an ACK for its 2xx response or until the server\n        // transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (this.initialTransaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) {\n            if (this.early) // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"UAS MUST NOT send a BYE on early dialogs.\");\n            if (this.ackWait && this.initialTransaction.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"UAS MUST NOT send a BYE on a confirmed dialog until it has received an ACK for its 2xx response or until the server transaction times out.\");\n        }\n        // A BYE request is constructed as would any other request within a\n        // dialog, as described in Section 12.\n        //\n        // Once the BYE is constructed, the UAC core creates a new non-INVITE\n        // client transaction, and passes it the BYE request.  The UAC MUST\n        // consider the session terminated (and therefore stop sending or\n        // listening for media) as soon as the BYE request is passed to the\n        // client transaction.  If the response for the BYE is a 481\n        // (Call/Transaction Does Not Exist) or a 408 (Request Timeout) or no\n        // response at all is received for the BYE (that is, a timeout is\n        // returned by the client transaction), the UAC MUST consider the\n        // session and the dialog terminated.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.1\n        return new (0, $d9aa6ae1832a414e$export$630de64a253e8ece)(this, delegate, options);\n    }\n    /**\n     * An INFO request can be associated with an Info Package (see\n     * Section 5), or associated with a legacy INFO usage (see Section 2).\n     *\n     * The construction of the INFO request is the same as any other\n     * non-target refresh request within an existing invite dialog usage as\n     * described in Section 12.2 of RFC 3261.\n     * https://tools.ietf.org/html/rfc6086#section-4.2.1\n     * @param options - Options bucket.\n     */ info(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INFO request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        return new (0, $044342eadbfb8900$export$b308e67c32b6f112)(this, delegate, options);\n    }\n    /**\n     * Modifying an Existing Session\n     *\n     * A successful INVITE request (see Section 13) establishes both a\n     * dialog between two user agents and a session using the offer-answer\n     * model.  Section 12 explains how to modify an existing dialog using a\n     * target refresh request (for example, changing the remote target URI\n     * of the dialog).  This section describes how to modify the actual\n     * session.  This modification can involve changing addresses or ports,\n     * adding a media stream, deleting a media stream, and so on.  This is\n     * accomplished by sending a new INVITE request within the same dialog\n     * that established the session.  An INVITE request sent within an\n     * existing dialog is known as a re-INVITE.\n     *\n     *    Note that a single re-INVITE can modify the dialog and the\n     *    parameters of the session at the same time.\n     *\n     * Either the caller or callee can modify an existing session.\n     * https://tools.ietf.org/html/rfc3261#section-14\n     * @param options - Options bucket\n     */ invite(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INVITE request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        // Note that a UAC MUST NOT initiate a new INVITE transaction within a\n        // dialog while another INVITE transaction is in progress in either\n        // direction.\n        //\n        //    1. If there is an ongoing INVITE client transaction, the TU MUST\n        //       wait until the transaction reaches the completed or terminated\n        //       state before initiating the new INVITE.\n        //\n        //    2. If there is an ongoing INVITE server transaction, the TU MUST\n        //       wait until the transaction reaches the confirmed or terminated\n        //       state before initiating the new INVITE.\n        //\n        // However, a UA MAY initiate a regular transaction while an INVITE\n        // transaction is in progress.  A UA MAY also initiate an INVITE\n        // transaction while a regular transaction is in progress.\n        // https://tools.ietf.org/html/rfc3261#section-14.1\n        if (this.reinviteUserAgentClient) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"There is an ongoing re-INVITE client transaction.\");\n        if (this.reinviteUserAgentServer) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"There is an ongoing re-INVITE server transaction.\");\n        return new (0, $12099d1a10ca0749$export$6c7f5ec32d36fb7e)(this, delegate, options);\n    }\n    /**\n     * A UAC MAY associate a MESSAGE request with an existing dialog.  If a\n     * MESSAGE request is sent within a dialog, it is \"associated\" with any\n     * media session or sessions associated with that dialog.\n     * https://tools.ietf.org/html/rfc3428#section-4\n     * @param options - Options bucket.\n     */ message(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending MESSAGE request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        const message = this.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE, options);\n        return new (0, $783e517297d65771$export$3602b2fd01d6e2fe)(this.core, message, delegate);\n    }\n    /**\n     * The NOTIFY mechanism defined in [2] MUST be used to inform the agent\n     * sending the REFER of the status of the reference.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.4\n     * @param options - Options bucket.\n     */ notify(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending NOTIFY request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        return new (0, $f19ef72855eb101d$export$151371809900896b)(this, delegate, options);\n    }\n    /**\n     * Assuming the response is to be transmitted reliably, the UAC MUST\n     * create a new request with method PRACK.  This request is sent within\n     * the dialog associated with the provisional response (indeed, the\n     * provisional response may have created the dialog).  PRACK requests\n     * MAY contain bodies, which are interpreted according to their type and\n     * disposition.\n     * https://tools.ietf.org/html/rfc3262#section-4\n     * @param options - Options bucket.\n     */ prack(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending PRACK request`);\n        return new (0, $a8523058b2fef33d$export$424dbb5d332f10b4)(this, delegate, options);\n    }\n    /**\n     * REFER is a SIP request and is constructed as defined in [1].  A REFER\n     * request MUST contain exactly one Refer-To header field value.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.1\n     * @param options - Options bucket.\n     */ refer(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending REFER request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        // FIXME: TODO: Validate Refer-To header field value.\n        return new (0, $88db9e488f43f678$export$7ac04b273f84cb0e)(this, delegate, options);\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */ receiveRequest(message) {\n        this.logger.log(`INVITE dialog ${this.id} received ${message.method} request`);\n        // Response retransmissions cease when an ACK request for the\n        // response is received.  This is independent of whatever transport\n        // protocols are used to send the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) {\n            // If ackWait is true, then this is the ACK to the initial INVITE,\n            // otherwise this is an ACK to an in dialog INVITE. In either case,\n            // guard to make sure the sequence number of the ACK matches the INVITE.\n            if (this.ackWait) {\n                if (this.initialTransaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7)) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.initialTransaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                // Update before the delegate has a chance to handle the\n                // message as delegate may callback into this dialog.\n                this.ackWait = false;\n            } else {\n                if (!this.reinviteUserAgentServer) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.reinviteUserAgentServer.transaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                this.reinviteUserAgentServer = undefined;\n            }\n            this.signalingStateTransition(message);\n            if (this.delegate && this.delegate.onAck) {\n                const promiseOrVoid = this.delegate.onAck({\n                    message: message\n                });\n                if (promiseOrVoid instanceof Promise) {\n                    this.ackProcessing = true; // make sure this is always reset to false\n                    promiseOrVoid.then(()=>this.ackProcessing = false).catch(()=>this.ackProcessing = false);\n                }\n            }\n            return;\n        }\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`INVITE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Handle various INVITE related cross-over, glare and race conditions\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n            // Hopefully this message is helpful...\n            const warning = ()=>{\n                const reason = this.ackWait ? \"waiting for initial ACK\" : \"processing initial ACK\";\n                this.logger.warn(`INVITE dialog ${this.id} received re-INVITE while ${reason}`);\n                let msg = \"RFC 5407 suggests the following to avoid this race condition... \";\n                msg += \" Note: Implementation issues are outside the scope of this document,\";\n                msg += \" but the following tip is provided for avoiding race conditions of\";\n                msg += \" this type.  The caller can delay sending re-INVITE F6 for some period\";\n                msg += \" of time (2 seconds, perhaps), after which the caller can reasonably\";\n                msg += \" assume that its ACK has been received.  Implementors can decouple the\";\n                msg += \" actions of the user (e.g., pressing the hold button) from the actions\";\n                msg += \" of the protocol (the sending of re-INVITE F6), so that the UA can\";\n                msg += \" behave like this.  In this case, it is the implementor's choice as to\";\n                msg += \" how long to wait.  In most cases, such an implementation may be\";\n                msg += \" useful to prevent the type of race condition shown in this section.\";\n                msg += \" This document expresses no preference about whether or not they\";\n                msg += \" should wait for an ACK to be delivered.  After considering the impact\";\n                msg += \" on user experience, implementors should decide whether or not to wait\";\n                msg += \" for a while, because the user experience depends on the\";\n                msg += \" implementation and has no direct bearing on protocol behavior.\";\n                this.logger.warn(msg);\n                return; // drop re-INVITE request message\n            };\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            const retryAfter = Math.floor(Math.random() * 10) + 1;\n            const extraHeaders = [\n                `Retry-After: ${retryAfter}`\n            ];\n            // There may be ONLY ONE offer/answer negotiation in progress for a\n            // single dialog at any point in time.  Section 4 explains how to ensure\n            // this.\n            // https://tools.ietf.org/html/rfc6337#section-2.2\n            if (this.ackProcessing) {\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, {\n                    statusCode: 500,\n                    extraHeaders: extraHeaders\n                });\n                warning();\n                return;\n            }\n            // 3.1.4.  Callee Receives re-INVITE (Established State)  While in the\n            // Moratorium State (Case 1)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.4\n            // 3.1.5.  Callee Receives re-INVITE (Established State) While in the\n            // Moratorium State (Case 2)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.5\n            if (this.ackWait && this.signalingState !== (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) {\n                // This scenario is basically the same as that of Section 3.1.4, but\n                // differs in sending an offer in the 200 and an answer in the ACK.  In\n                // contrast to the previous case, the offer in the 200 (F3) and the\n                // offer in the re-INVITE (F6) collide with each other.\n                //\n                // Bob sends a 491 to the re-INVITE (F6) since he is not able to\n                // properly handle a new request until he receives an answer.  (Note:\n                // 500 with a Retry-After header may be returned if the 491 response is\n                // understood to indicate request collision.  However, 491 is\n                // recommended here because 500 applies to so many cases that it is\n                // difficult to determine what the real problem was.)\n                // https://tools.ietf.org/html/rfc5407#section-3.1.5\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, {\n                    statusCode: 500,\n                    extraHeaders: extraHeaders\n                });\n                warning();\n                return;\n            }\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentServer) {\n                this.core.replyStateless(message, {\n                    statusCode: 500,\n                    extraHeaders: extraHeaders\n                });\n                return;\n            }\n            // A UAS that receives an INVITE on a dialog while an INVITE it had sent\n            // on that dialog is in progress MUST return a 491 (Request Pending)\n            // response to the received INVITE.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentClient) {\n                this.core.replyStateless(message, {\n                    statusCode: 491\n                });\n                return;\n            }\n        }\n        // Requests within a dialog MAY contain Record-Route and Contact header\n        // fields.  However, these requests do not cause the dialog's route set\n        // to be modified, although they may modify the remote target URI.\n        // Specifically, requests that are not target refresh requests do not\n        // modify the dialog's remote target URI, and requests that are target\n        // refresh requests do.  For dialogs that have been established with an\n        // INVITE, the only target refresh request defined is re-INVITE (see\n        // Section 14).  Other extensions may define different target refresh\n        // requests for dialogs established in other ways.\n        //\n        //    Note that an ACK is NOT a target refresh request.\n        //\n        // Target refresh requests only update the dialog's remote target URI,\n        // and not the route set formed from the Record-Route.  Updating the\n        // latter would introduce severe backwards compatibility problems with\n        // RFC 2543-compliant systems.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n            // FIXME: parser needs to be typed...\n            const contact = message.parseHeader(\"contact\");\n            if (!contact) // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n            if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n            this.dialogState.remoteTarget = contact.uri;\n        }\n        // Switch on method and then delegate.\n        switch(message.method){\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE:\n                // A UAS core receiving a BYE request for an existing dialog MUST follow\n                // the procedures of Section 12.2.2 to process the request.  Once done,\n                // the UAS SHOULD terminate the session (and therefore stop sending and\n                // listening for media).  The only case where it can elect not to are\n                // multicast sessions, where participation is possible even if the other\n                // participant in the dialog has terminated its involvement in the\n                // session.  Whether or not it ends its participation on the session,\n                // the UAS core MUST generate a 2xx response to the BYE, and MUST pass\n                // that to the server transaction for transmission.\n                //\n                // The UAS MUST still respond to any pending requests received for that\n                // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n                // be generated to those pending requests.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                {\n                    const uas = new (0, $69084a386acad000$export$6a29e9371256c3d0)(this, message);\n                    this.delegate && this.delegate.onBye ? this.delegate.onBye(uas) : uas.accept();\n                    this.dispose();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO:\n                // If a UA receives an INFO request associated with an Info Package that\n                // the UA has not indicated willingness to receive, the UA MUST send a\n                // 469 (Bad Info Package) response (see Section 11.6), which contains a\n                // Recv-Info header field with Info Packages for which the UA is willing\n                // to receive INFO requests.\n                {\n                    const uas = new (0, $e92497b459586ef1$export$772b8f02f1941c4b)(this, message);\n                    this.delegate && this.delegate.onInfo ? this.delegate.onInfo(uas) : uas.reject({\n                        statusCode: 469,\n                        extraHeaders: [\n                            \"Recv-Info:\"\n                        ]\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE:\n                // If the new session description is not acceptable, the UAS can reject\n                // it by returning a 488 (Not Acceptable Here) response for the re-\n                // INVITE.  This response SHOULD include a Warning header field.\n                // https://tools.ietf.org/html/rfc3261#section-14.2\n                {\n                    const uas = new (0, $03c131d0db7aea8c$export$5bc130a72a84e472)(this, message);\n                    this.signalingStateTransition(message);\n                    this.delegate && this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject({\n                        statusCode: 488\n                    }); // TODO: Warning header field.\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE:\n                {\n                    const uas = new (0, $08a363fd15b101f9$export$5c5e9b9267eb32a0)(this.core, message);\n                    this.delegate && this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.4\n                {\n                    const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n                    this.delegate && this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PRACK:\n                // https://tools.ietf.org/html/rfc3262#section-4\n                {\n                    const uas = new (0, $3d5206d14e2a891b$export$e1cce83311913204)(this, message);\n                    this.delegate && this.delegate.onPrack ? this.delegate.onPrack(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new (0, $61a4eb8bc96512de$export$dac239e67229cfb6)(this, message);\n                    this.delegate && this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject();\n                }\n                break;\n            default:\n                this.logger.log(`INVITE dialog ${this.id} received unimplemented ${message.method} request`);\n                this.core.replyStateless(message, {\n                    statusCode: 501\n                });\n                break;\n        }\n    }\n    /**\n     * Guard against out of order reliable provisional responses and retransmissions.\n     * Returns false if the response should be discarded, otherwise true.\n     * @param message - Incoming response message within this dialog.\n     */ reliableSequenceGuard(message) {\n        const statusCode = message.statusCode;\n        if (!statusCode) throw new Error(\"Status code undefined\");\n        if (statusCode > 100 && statusCode < 200) {\n            // If a provisional response is received for an initial request, and\n            // that response contains a Require header field containing the option\n            // tag 100rel, the response is to be sent reliably.  If the response is\n            // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n            // ignored, and the procedures below MUST NOT be used.\n            // https://tools.ietf.org/html/rfc3262#section-4\n            const requireHeader = message.getHeader(\"require\");\n            const rseqHeader = message.getHeader(\"rseq\");\n            const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n            if (rseq) {\n                // Handling of subsequent reliable provisional responses for the same\n                // initial request follows the same rules as above, with the following\n                // difference: reliable provisional responses are guaranteed to be in\n                // order.  As a result, if the UAC receives another reliable provisional\n                // response to the same request, and its RSeq value is not one higher\n                // than the value of the sequence number, that response MUST NOT be\n                // acknowledged with a PRACK, and MUST NOT be processed further by the\n                // UAC.  An implementation MAY discard the response, or MAY cache the\n                // response in the hopes of receiving the missing responses.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                if (this.rseq && this.rseq + 1 !== rseq) return false;\n                // Once a reliable provisional response is received, retransmissions of\n                // that response MUST be discarded.  A response is a retransmission when\n                // its dialog ID, CSeq, and RSeq match the original response.  The UAC\n                // MUST maintain a sequence number that indicates the most recently\n                // received in-order reliable provisional response for the initial\n                // request.  This sequence number MUST be maintained until a final\n                // response is received for the initial request.  Its value MUST be\n                // initialized to the RSeq header field in the first reliable\n                // provisional response received for the initial request.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                this.rseq = this.rseq ? this.rseq + 1 : rseq;\n            }\n        }\n        return true;\n    }\n    /**\n     * If not in a stable signaling state, rollback to prior stable signaling state.\n     */ signalingStateRollback() {\n        if (this._signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer || this.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer) {\n            if (this._rollbackOffer && this._rollbackAnswer) {\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._offer = this._rollbackOffer;\n                this._answer = this._rollbackAnswer;\n            }\n        }\n    }\n    /**\n     * Update the signaling state of the dialog.\n     * @param message - The message to base the update off of.\n     */ signalingStateTransition(message) {\n        const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(message);\n        // No body, no session. No, woman, no cry.\n        if (!body || body.contentDisposition !== \"session\") return;\n        // We've got an existing offer and answer which we may wish to rollback to\n        if (this._signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) {\n            this._rollbackOffer = this._offer;\n            this._rollbackAnswer = this._answer;\n        }\n        // We're in UAS role, receiving incoming request with session description\n        if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n        // We're in UAC role, receiving incoming response with session description\n        if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n        // We're in UAC role, sending outgoing request with session description\n        if (message instanceof (0, $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n        // We're in UAS role, sending outgoing response with session description\n        if ((0, $35e2f96fad41499f$export$540dbd453ede1ce3)(message)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n    }\n    start2xxRetransmissionTimer() {\n        if (this.initialTransaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) {\n            const transaction = this.initialTransaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1;\n            const retransmission = ()=>{\n                if (!this.ackWait) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = ()=>{\n                if (transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    if (this.ackWait) {\n                        if (this.delegate && this.delegate.onAckTimeout) this.delegate.onAckTimeout();\n                        else this.bye();\n                    }\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n    // FIXME: Refactor\n    startReInvite2xxRetransmissionTimer() {\n        if (this.reinviteUserAgentServer && this.reinviteUserAgentServer.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) {\n            const transaction = this.reinviteUserAgentServer.transaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1;\n            const retransmission = ()=>{\n                if (!this.reinviteUserAgentServer) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = ()=>{\n                if (transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    this.reinviteUserAgentServer;\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n}\n\n\n\n\n\n\nclass $0f92a99d89cb70d4$export$6ca778570a388e6c extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $0f79ac00a17f1010$export$815a7ced3416e5c7), core, message, delegate);\n        this.confirmedDialogAcks = new Map();\n        this.confirmedDialogs = new Map();\n        this.earlyDialogs = new Map();\n        this.delegate = delegate;\n    }\n    dispose() {\n        // The UAC core considers the INVITE transaction completed 64*T1 seconds\n        // after the reception of the first 2xx response.  At this point all the\n        // early dialogs that have not transitioned to established dialogs are\n        // terminated.  Once the INVITE transaction is considered completed by\n        // the UAC core, no more new 2xx responses are expected to arrive.\n        //\n        // If, after acknowledging any 2xx response to an INVITE, the UAC does\n        // not want to continue with that dialog, then the UAC MUST terminate\n        // the dialog by sending a BYE request as described in Section 15.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n        this.earlyDialogs.forEach((earlyDialog)=>earlyDialog.dispose());\n        this.earlyDialogs.clear();\n        super.dispose();\n    }\n    /**\n     * Special case for transport error while sending ACK.\n     * @param error - Transport error\n     */ onTransportError(error) {\n        if (this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling) return super.onTransportError(error);\n        // If not in 'calling' state, the transport error occurred while sending an ACK.\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error while sending ACK.\");\n    }\n    /**\n     * Once the INVITE has been passed to the INVITE client transaction, the\n     * UAC waits for responses for the INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2\n     * @param incomingResponse - Incoming response to INVITE request.\n     */ receiveResponse(message) {\n        if (!this.authenticationGuard(message)) return;\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        switch(true){\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) this.delegate.onTrying({\n                    message: message\n                });\n                return;\n            case /^1[0-9]{2}$/.test(statusCode):\n                // Zero, one or multiple provisional responses may arrive before one or\n                // more final responses are received.  Provisional responses for an\n                // INVITE request can create \"early dialogs\".  If a provisional response\n                // has a tag in the To field, and if the dialog ID of the response does\n                // not match an existing dialog, one is constructed using the procedures\n                // defined in Section 12.1.2.\n                //\n                // The early dialog will only be needed if the UAC needs to send a\n                // request to its peer within the dialog before the initial INVITE\n                // transaction completes.  Header fields present in a provisional\n                // response are applicable as long as the dialog is in the early state\n                // (for example, an Allow header field in a provisional response\n                // contains the methods that can be used in the dialog while this is in\n                // the early state).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.1\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Provisional without to tag, no dialog to create.\n                    if (!message.toTag) {\n                        this.logger.warn(\"Non-100 1xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Provisional without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"Non-100 1xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentClient(this.message, message);\n                    // Have existing early dialog or create a new one.\n                    let earlyDialog = this.earlyDialogs.get(dialogState.id);\n                    if (!earlyDialog) {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        earlyDialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, dialogState);\n                        this.earlyDialogs.set(earlyDialog.id, earlyDialog);\n                    }\n                    // Guard against out of order reliable provisional responses.\n                    // Note that this is where the rseq tracking is done.\n                    if (!earlyDialog.reliableSequenceGuard(message)) {\n                        this.logger.warn(\"1xx INVITE reliable response received out of order or is a retransmission, dropping.\");\n                        return;\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (earlyDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial || earlyDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer) earlyDialog.signalingStateTransition(message);\n                    // Pass response to delegate.\n                    const session = earlyDialog;\n                    if (this.delegate && this.delegate.onProgress) this.delegate.onProgress({\n                        message: message,\n                        session: session,\n                        prack: (options)=>{\n                            const outgoingPrackRequest = session.prack(undefined, options);\n                            return outgoingPrackRequest;\n                        }\n                    });\n                }\n                return;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Multiple 2xx responses may arrive at the UAC for a single INVITE\n                // request due to a forking proxy.  Each response is distinguished by\n                // the tag parameter in the To header field, and each represents a\n                // distinct dialog, with a distinct dialog identifier.\n                //\n                // If the dialog identifier in the 2xx response matches the dialog\n                // identifier of an existing dialog, the dialog MUST be transitioned to\n                // the \"confirmed\" state, and the route set for the dialog MUST be\n                // recomputed based on the 2xx response using the procedures of Section\n                // 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n                // constructed using the procedures of Section 12.1.2.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Final without to tag, malformed response.\n                    if (!message.toTag) {\n                        this.logger.error(\"2xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Final without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"2xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentClient(this.message, message);\n                    // NOTE: Currently our transaction layer is caching the 2xx ACKs and\n                    // handling retransmissions of the ACK which is an approach which is\n                    // not to spec. In any event, this block is intended to provide a to\n                    // spec implementation of ACK retransmissions, but it should not be\n                    // hit currently.\n                    let dialog = this.confirmedDialogs.get(dialogState.id);\n                    if (dialog) {\n                        // Once the ACK has been constructed, the procedures of [4] are used to\n                        // determine the destination address, port and transport.  However, the\n                        // request is passed to the transport layer directly for transmission,\n                        // rather than a client transaction.  This is because the UAC core\n                        // handles retransmissions of the ACK, not the transaction layer.  The\n                        // ACK MUST be passed to the client transport every time a\n                        // retransmission of the 2xx final response that triggered the ACK\n                        // arrives.\n                        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                        const outgoingAckRequest = this.confirmedDialogAcks.get(dialogState.id);\n                        if (outgoingAckRequest) {\n                            const transaction = this.transaction;\n                            if (!(transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Client transaction not instance of InviteClientTransaction.\");\n                            transaction.ackResponse(outgoingAckRequest.message);\n                        }\n                        return;\n                    }\n                    // If the dialog identifier in the 2xx response matches the dialog\n                    // identifier of an existing dialog, the dialog MUST be transitioned to\n                    // the \"confirmed\" state, and the route set for the dialog MUST be\n                    // recomputed based on the 2xx response using the procedures of Section\n                    // 12.2.1.2. Otherwise, a new dialog in the \"confirmed\" state MUST be\n                    // constructed using the procedures of Section 12.1.2.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    dialog = this.earlyDialogs.get(dialogState.id);\n                    if (dialog) {\n                        dialog.confirm();\n                        dialog.recomputeRouteSet(message);\n                        this.earlyDialogs.delete(dialog.id);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    } else {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        dialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, dialogState);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (dialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial || dialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer) dialog.signalingStateTransition(message);\n                    // Session Initiated! :)\n                    const session = dialog;\n                    // The UAC core MUST generate an ACK request for each 2xx received from\n                    // the transaction layer.  The header fields of the ACK are constructed\n                    // in the same way as for any request sent within a dialog (see Section\n                    // 12) with the exception of the CSeq and the header fields related to\n                    // authentication.  The sequence number of the CSeq header field MUST be\n                    // the same as the INVITE being acknowledged, but the CSeq method MUST\n                    // be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n                    // the 2xx contains an offer (based on the rules above), the ACK MUST\n                    // carry an answer in its body.  If the offer in the 2xx response is not\n                    // acceptable, the UAC core MUST generate a valid answer in the ACK and\n                    // then send a BYE immediately.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    if (this.delegate && this.delegate.onAccept) this.delegate.onAccept({\n                        message: message,\n                        session: session,\n                        ack: (options)=>{\n                            const outgoingAckRequest = session.ack(options);\n                            this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                            return outgoingAckRequest;\n                        }\n                    });\n                    else {\n                        const outgoingAckRequest = session.ack();\n                        this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                    }\n                }\n                return;\n            case /^3[0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog)=>earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A 3xx response may contain one or more Contact header field values\n                // providing new addresses where the callee might be reachable.\n                // Depending on the status code of the 3xx response (see Section 21.3),\n                // the UAC MAY choose to try those new addresses.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.2\n                if (this.delegate && this.delegate.onRedirect) this.delegate.onRedirect({\n                    message: message\n                });\n                return;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog)=>earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A single non-2xx final response may be received for the INVITE.  4xx,\n                // 5xx and 6xx responses may contain a Contact header field value\n                // indicating the location where additional information about the error\n                // can be found.  Subsequent final responses (which would only arrive\n                // under error conditions) MUST be ignored.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                if (this.delegate && this.delegate.onReject) this.delegate.onReject({\n                    message: message\n                });\n                return;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n        throw new Error(`Executing what should be an unreachable code path receiving ${statusCode} response.`);\n    }\n}\n\n\n\n\n\n\n\n\n\nclass $f13700957d08a111$export$fcc77d6d1624c472 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $81bc4312505cb83e$export$fdc050a01797e9de), core, message, delegate);\n        this.core = core;\n    }\n    dispose() {\n        if (this.earlyDialog) this.earlyDialog.dispose();\n        super.dispose();\n    }\n    /**\n     * 13.3.1.4 The INVITE is Accepted\n     * The UAS core generates a 2xx response.  This response establishes a\n     * dialog, and therefore follows the procedures of Section 12.1.1 in\n     * addition to those of Section 8.2.6.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n     * @param options - Accept options bucket.\n     */ accept(options = {\n        statusCode: 200\n    }) {\n        if (!this.acceptable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.confirmedDialog) {\n            if (this.earlyDialog) {\n                this.earlyDialog.confirm();\n                this.confirmedDialog = this.earlyDialog;\n                this.earlyDialog = undefined;\n            } else {\n                const transaction = this.transaction;\n                if (!(transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                const state = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentServer(this.message, this.toTag);\n                this.confirmedDialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, state);\n            }\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header)=>`Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact.toString()}`;\n        // A 2xx response to an INVITE SHOULD contain the Allow header field and\n        // the Supported header field, and MAY contain the Accept header field.\n        // Including these header fields allows the UAC to determine the\n        // features and extensions supported by the UAS for the duration of the\n        // call, without probing.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        // FIXME: TODO: This should not be hard coded.\n        const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n        // FIXME: TODO: Supported header (see reply())\n        // FIXME: TODO: Accept header\n        // If the INVITE request contained an offer, and the UAS had not yet\n        // sent an answer, the 2xx MUST contain an answer.  If the INVITE did\n        // not contain an offer, the 2xx MUST contain an offer if the UAS had\n        // not yet sent an offer.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!options.body) {\n            if (this.confirmedDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) options.body = this.confirmedDialog.answer; // resend the answer sent in provisional response\n            else if (this.confirmedDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial || this.confirmedDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer) throw new Error(\"Response must have a body.\");\n        }\n        options.statusCode = options.statusCode || 200;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.accept(options);\n        const session = this.confirmedDialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        // Update dialog signaling state\n        if (options.body) // Once the UAS has sent or received an answer to the initial\n        // offer, it MUST NOT generate subsequent offers in any responses\n        // to the initial INVITE.  This means that a UAS based on this\n        // specification alone can never generate subsequent offers until\n        // completion of the initial transaction.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        {\n            if (this.confirmedDialog.signalingState !== (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) this.confirmedDialog.signalingStateTransition(options.body);\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.1 Progress\n     * If the UAS is not able to answer the invitation immediately, it can\n     * choose to indicate some kind of progress to the UAC (for example, an\n     * indication that a phone is ringing).  This is accomplished with a\n     * provisional response between 101 and 199.  These provisional\n     * responses establish early dialogs and therefore follow the procedures\n     * of Section 12.1.1 in addition to those of Section 8.2.6.  A UAS MAY\n     * send as many provisional responses as it likes.  Each of these MUST\n     * indicate the same dialog ID.  However, these will not be delivered\n     * reliably.\n     *\n     * If the UAS desires an extended period of time to answer the INVITE,\n     * it will need to ask for an \"extension\" in order to prevent proxies\n     * from canceling the transaction.  A proxy has the option of canceling\n     * a transaction when there is a gap of 3 minutes between responses in a\n     * transaction.  To prevent cancellation, the UAS MUST send a non-100\n     * provisional response at every minute, to handle the possibility of\n     * lost provisional responses.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.1\n     * @param options - Progress options bucket.\n     */ progress(options = {\n        statusCode: 180\n    }) {\n        if (!this.progressable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.earlyDialog) {\n            const transaction = this.transaction;\n            if (!(transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            const state = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentServer(this.message, this.toTag, true);\n            this.earlyDialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, state);\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header)=>`Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact}`;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.progress(options);\n        const session = this.earlyDialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        // Update dialog signaling state\n        if (options.body) // Once the UAS has sent or received an answer to the initial\n        // offer, it MUST NOT generate subsequent offers in any responses\n        // to the initial INVITE.  This means that a UAS based on this\n        // specification alone can never generate subsequent offers until\n        // completion of the initial transaction.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        {\n            if (this.earlyDialog.signalingState !== (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) this.earlyDialog.signalingStateTransition(options.body);\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.2 The INVITE is Redirected\n     * If the UAS decides to redirect the call, a 3xx response is sent.  A\n     * 300 (Multiple Choices), 301 (Moved Permanently) or 302 (Moved\n     * Temporarily) response SHOULD contain a Contact header field\n     * containing one or more URIs of new addresses to be tried.  The\n     * response is passed to the INVITE server transaction, which will deal\n     * with its retransmissions.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.2\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */ redirect(contacts, options = {\n        statusCode: 302\n    }) {\n        return super.redirect(contacts, options);\n    }\n    /**\n     * 13.3.1.3 The INVITE is Rejected\n     * A common scenario occurs when the callee is currently not willing or\n     * able to take additional calls at this end system.  A 486 (Busy Here)\n     * SHOULD be returned in such a scenario.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n     * @param options - Reject options bucket.\n     */ reject(options = {\n        statusCode: 486\n    }) {\n        return super.reject(options);\n    }\n}\n\n\n\n\n\n\n\nclass $b88f78f9f1f05862$export$d7ea912f644d1be1 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n    }\n}\n\n\n\n\n\nclass $31dbebbbce838c73$export$50216c3f2f5df938 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n    }\n}\n\n\n\n\nclass $255bb24940d3e795$export$8f00fc776af848de extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), core, message, delegate);\n        this.core = core;\n    }\n}\n\n\n\n\n/**\n * Subscription state.\n * @remarks\n * https://tools.ietf.org/html/rfc6665#section-4.1.2\n * @public\n */ var $228300638ee3e578$export$3eb358ec30f826ce;\n(function(SubscriptionState) {\n    SubscriptionState[\"Initial\"] = \"Initial\";\n    SubscriptionState[\"NotifyWait\"] = \"NotifyWait\";\n    SubscriptionState[\"Pending\"] = \"Pending\";\n    SubscriptionState[\"Active\"] = \"Active\";\n    SubscriptionState[\"Terminated\"] = \"Terminated\";\n})($228300638ee3e578$export$3eb358ec30f826ce = $228300638ee3e578$export$3eb358ec30f826ce || ($228300638ee3e578$export$3eb358ec30f826ce = {}));\n\n\n\n\n\n\n\n\nclass $bede16431f3e462e$export$c30ba9854f9c2b03 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).SUBSCRIBE, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n        this.dialog = dialog;\n    }\n    waitNotifyStop() {\n        // TODO: Placeholder. Not utilized currently.\n        return;\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */ receiveResponse(message) {\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (this.dialog.subscriptionExpires > subscriptionExpiresReceived) this.dialog.subscriptionExpires = subscriptionExpiresReceived;\n            }\n        }\n        if (message.statusCode && message.statusCode >= 400 && message.statusCode < 700) {\n            // If a SUBSCRIBE request to refresh a subscription receives a 404, 405,\n            // 410, 416, 480-485, 489, 501, or 604 response, the subscriber MUST\n            // consider the subscription terminated.  (See [RFC5057] for further\n            // details and notes about the effect of error codes on dialogs and\n            // usages within dialog, such as subscriptions).  If the subscriber\n            // wishes to re-subscribe to the state, he does so by composing an\n            // unrelated initial SUBSCRIBE request with a freshly generated Call-ID\n            // and a new, unique \"From\" tag (see Section 4.1.2.1).\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n            const errorCodes = [\n                404,\n                405,\n                410,\n                416,\n                480,\n                481,\n                482,\n                483,\n                484,\n                485,\n                489,\n                501,\n                604\n            ];\n            if (errorCodes.includes(message.statusCode)) this.dialog.terminate();\n        // If a SUBSCRIBE request to refresh a subscription fails with any error\n        // code other than those listed above, the original subscription is\n        // still considered valid for the duration of the most recently known\n        // \"Expires\" value as negotiated by the most recent successful SUBSCRIBE\n        // transaction, or as communicated by a NOTIFY request in its\n        // \"Subscription-State\" header field \"expires\" parameter.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n        }\n        super.receiveResponse(message);\n    }\n}\n\n\n\nclass $0458690b5a556a0b$export$78610d8515ef16f8 extends (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153) {\n    constructor(subscriptionEvent, subscriptionExpires, subscriptionState, core, state, delegate){\n        super(core, state);\n        this.delegate = delegate;\n        this._autoRefresh = false;\n        this._subscriptionEvent = subscriptionEvent;\n        this._subscriptionExpires = subscriptionExpires;\n        this._subscriptionExpiresInitial = subscriptionExpires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        this._subscriptionRefresh = undefined;\n        this._subscriptionRefreshLastSet = undefined;\n        this._subscriptionState = subscriptionState;\n        this.logger = core.loggerFactory.getLogger(\"sip.subscribe-dialog\");\n        this.logger.log(`SUBSCRIBE dialog ${this.id} constructed`);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */ static initialDialogStateForSubscription(outgoingSubscribeRequestMessage, incomingNotifyRequestMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingNotifyRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingNotifyRequestMessage.parseHeader(\"contact\");\n        if (!contact) // TODO: Review to make sure this will never happen\n        throw new Error(\"Contact undefined.\");\n        if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingSubscribeRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingSubscribeRequestMessage.callId;\n        const localTag = outgoingSubscribeRequestMessage.fromTag;\n        const remoteTag = incomingNotifyRequestMessage.fromTag;\n        if (!callId) // TODO: Review to make sure this will never happen\n        throw new Error(\"Call id undefined.\");\n        if (!localTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"From tag undefined.\");\n        if (!remoteTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingSubscribeRequestMessage.from) // TODO: Review to make sure this will never happen\n        throw new Error(\"From undefined.\");\n        if (!outgoingSubscribeRequestMessage.to) // TODO: Review to make sure this will never happen\n        throw new Error(\"To undefined.\");\n        const localURI = outgoingSubscribeRequestMessage.from.uri;\n        const remoteURI = outgoingSubscribeRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        const early = false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early: early,\n            callId: callId,\n            localTag: localTag,\n            remoteTag: remoteTag,\n            localSequenceNumber: localSequenceNumber,\n            remoteSequenceNumber: remoteSequenceNumber,\n            localURI: localURI,\n            remoteURI: remoteURI,\n            remoteTarget: remoteTarget,\n            routeSet: routeSet,\n            secure: secure\n        };\n        return dialogState;\n    }\n    dispose() {\n        super.dispose();\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        this.refreshTimerClear();\n        this.logger.log(`SUBSCRIBE dialog ${this.id} destroyed`);\n    }\n    get autoRefresh() {\n        return this._autoRefresh;\n    }\n    set autoRefresh(autoRefresh) {\n        this._autoRefresh = true;\n        this.refreshTimerSet();\n    }\n    get subscriptionEvent() {\n        return this._subscriptionEvent;\n    }\n    /** Number of seconds until subscription expires. */ get subscriptionExpires() {\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionExpiresLastSet;\n        const secondsUntilExpires = this._subscriptionExpires - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    set subscriptionExpires(expires) {\n        if (expires < 0) throw new Error(\"Expires must be greater than or equal to zero.\");\n        this._subscriptionExpires = expires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        if (this.autoRefresh) {\n            const refresh = this.subscriptionRefresh;\n            if (refresh === undefined || refresh >= expires) this.refreshTimerSet();\n        }\n    }\n    get subscriptionExpiresInitial() {\n        return this._subscriptionExpiresInitial;\n    }\n    /** Number of seconds until subscription auto refresh. */ get subscriptionRefresh() {\n        if (this._subscriptionRefresh === undefined || this._subscriptionRefreshLastSet === undefined) return undefined;\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionRefreshLastSet;\n        const secondsUntilExpires = this._subscriptionRefresh - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    get subscriptionState() {\n        return this._subscriptionState;\n    }\n    /**\n     * Receive in dialog request message from transport.\n     * @param message -  The incoming request message.\n     */ receiveRequest(message) {\n        this.logger.log(`SUBSCRIBE dialog ${this.id} received ${message.method} request`);\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`SUBSCRIBE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Switch on method and then delegate.\n        switch(message.method){\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY:\n                this.onNotify(message);\n                break;\n            default:\n                this.logger.log(`SUBSCRIBE dialog ${this.id} received unimplemented ${message.method} request`);\n                this.core.replyStateless(message, {\n                    statusCode: 501\n                });\n                break;\n        }\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */ refresh() {\n        const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: \" + this.subscriptionExpiresInitial);\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     * @param delegate - Delegate to handle responses.\n     * @param options - Options bucket.\n     */ subscribe(delegate, options = {}) {\n        var _a;\n        if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) // FIXME: This needs to be a proper exception\n        throw new Error(`Invalid state ${this.subscriptionState}. May only re-subscribe while in state \"pending\" or \"active\".`);\n        this.logger.log(`SUBSCRIBE dialog ${this.id} sending SUBSCRIBE request`);\n        const uac = new (0, $bede16431f3e462e$export$c30ba9854f9c2b03)(this, delegate, options);\n        // Abort any outstanding timer (as it would otherwise become guaranteed to terminate us).\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        if (!((_a = options.extraHeaders) === null || _a === void 0 ? void 0 : _a.includes(\"Expires: 0\"))) // When refreshing a subscription, a subscriber starts Timer N, set to\n        // 64*T1, when it sends the SUBSCRIBE request.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n        this.N = setTimeout(()=>this.timerN(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_N);\n        return uac;\n    }\n    /**\n     * 4.4.1.  Dialog Creation and Termination\n     * A subscription is destroyed after a notifier sends a NOTIFY request\n     * with a \"Subscription-State\" of \"terminated\", or in certain error\n     * situations described elsewhere in this document.\n     * https://tools.ietf.org/html/rfc6665#section-4.4.1\n     */ terminate() {\n        this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated);\n        this.onTerminated();\n    }\n    /**\n     * 4.1.2.3.  Unsubscribing\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.3\n     */ unsubscribe() {\n        const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: 0\");\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * Handle in dialog NOTIFY requests.\n     * This does not include the first NOTIFY which created the dialog.\n     * @param message - The incoming NOTIFY request message.\n     */ onNotify(message) {\n        // If, for some reason, the event package designated in the \"Event\"\n        // header field of the NOTIFY request is not supported, the subscriber\n        // will respond with a 489 (Bad Event) response.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const event = message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.core.replyStateless(message, {\n                statusCode: 489\n            });\n            return;\n        }\n        // In the state diagram, \"Re-subscription times out\" means that an\n        // attempt to refresh or update the subscription using a new SUBSCRIBE\n        // request does not result in a NOTIFY request before the corresponding\n        // Timer N expires.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.core.replyStateless(message, {\n                statusCode: 489\n            });\n            return;\n        }\n        const state = subscriptionState.state;\n        const expires = subscriptionState.expires ? Math.max(subscriptionState.expires, 0) : undefined;\n        // Update our state and expiration.\n        switch(state){\n            case \"pending\":\n                this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Pending, expires);\n                break;\n            case \"active\":\n                this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Active, expires);\n                break;\n            case \"terminated\":\n                this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated, expires);\n                break;\n            default:\n                this.logger.warn(\"Unrecognized subscription state.\");\n                break;\n        }\n        // Delegate remainder of NOTIFY handling.\n        const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n        if (this.delegate && this.delegate.onNotify) this.delegate.onNotify(uas);\n        else uas.accept();\n    }\n    onRefresh(request) {\n        if (this.delegate && this.delegate.onRefresh) this.delegate.onRefresh(request);\n    }\n    onTerminated() {\n        if (this.delegate && this.delegate.onTerminated) this.delegate.onTerminated();\n    }\n    refreshTimerClear() {\n        if (this.refreshTimer) {\n            clearTimeout(this.refreshTimer);\n            this.refreshTimer = undefined;\n        }\n    }\n    refreshTimerSet() {\n        this.refreshTimerClear();\n        if (this.autoRefresh && this.subscriptionExpires > 0) {\n            const refresh = this.subscriptionExpires * 900;\n            this._subscriptionRefresh = Math.floor(refresh / 1000);\n            this._subscriptionRefreshLastSet = Math.floor(Date.now() / 1000);\n            this.refreshTimer = setTimeout(()=>{\n                this.refreshTimer = undefined;\n                this._subscriptionRefresh = undefined;\n                this._subscriptionRefreshLastSet = undefined;\n                this.onRefresh(this.refresh());\n            }, refresh);\n        }\n    }\n    stateTransition(newState, newExpires) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            this.logger.warn(`Invalid subscription state transition from ${this.subscriptionState} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Initial:\n                invalidStateTransition();\n                return;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait:\n                invalidStateTransition();\n                return;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending:\n                if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Active:\n                if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated:\n                if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            default:\n                invalidStateTransition();\n                return;\n        }\n        // If the \"Subscription-State\" value is \"pending\", the subscription has\n        // been received by the notifier, but there is insufficient policy\n        // information to grant or deny the subscription yet.  If the header\n        // field also contains an \"expires\" parameter, the subscriber SHOULD\n        // take it as the authoritative subscription duration and adjust\n        // accordingly.  No further action is necessary on the part of the\n        // subscriber.  The \"retry-after\" and \"reason\" parameters have no\n        // semantics for \"pending\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending) {\n            if (newExpires) this.subscriptionExpires = newExpires;\n        }\n        // If the \"Subscription-State\" header field value is \"active\", it means\n        // that the subscription has been accepted and (in general) has been\n        // authorized.  If the header field also contains an \"expires\"\n        // parameter, the subscriber SHOULD take it as the authoritative\n        // subscription duration and adjust accordingly.  The \"retry-after\" and\n        // \"reason\" parameters have no semantics for \"active\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) {\n            if (newExpires) this.subscriptionExpires = newExpires;\n        }\n        // If the \"Subscription-State\" value is \"terminated\", the subscriber\n        // MUST consider the subscription terminated.  The \"expires\" parameter\n        // has no semantics for \"terminated\" -- notifiers SHOULD NOT include an\n        // \"expires\" parameter on a \"Subscription-State\" header field with a\n        // value of \"terminated\", and subscribers MUST ignore any such\n        // parameter, if present.\n        if (newState === (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated) this.dispose();\n        this._subscriptionState = newState;\n    }\n    /**\n     * When refreshing a subscription, a subscriber starts Timer N, set to\n     * 64*T1, when it sends the SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription terminated.  If the subscriber receives a success\n     * response to the SUBSCRIBE request that indicates that no NOTIFY\n     * request will be generated -- such as the 204 response defined for use\n     * with the optional extension described in [RFC5839] -- then it MUST\n     * cancel Timer N.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */ timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE dialog. Timed out waiting for NOTIFY.`);\n        if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated) {\n            this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated);\n            this.onTerminated();\n        }\n    }\n}\n\n\n\n\n\n\nclass $4bba609974ceb444$export$45d1cd6695d95e68 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        // Get event from request message.\n        const event = message.getHeader(\"Event\");\n        if (!event) throw new Error(\"Event undefined\");\n        // Get expires from request message.\n        const expires = message.getHeader(\"Expires\");\n        if (!expires) throw new Error(\"Expires undefined\");\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n        this.delegate = delegate;\n        // FIXME: Subscriber id should also be matching on event id.\n        this.subscriberId = message.callId + message.fromTag + event;\n        this.subscriptionExpiresRequested = this.subscriptionExpires = Number(expires);\n        this.subscriptionEvent = event;\n        this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait;\n        // Start waiting for a NOTIFY we can use to create a subscription.\n        this.waitNotifyStart();\n    }\n    /**\n     * Destructor.\n     * Note that Timer N may live on waiting for an initial NOTIFY and\n     * the delegate may still receive that NOTIFY. If you don't want\n     * that behavior then either clear the delegate so the delegate\n     * doesn't get called (a 200 will be sent in response to the NOTIFY)\n     * or call `waitNotifyStop` which will clear Timer N and remove this\n     * UAC from the core (a 481 will be sent in response to the NOTIFY).\n     */ dispose() {\n        super.dispose();\n    }\n    /**\n     * Handle out of dialog NOTIFY associated with SUBSCRIBE request.\n     * This is the first NOTIFY received after the SUBSCRIBE request.\n     * @param uas - User agent server handling the subscription creating NOTIFY.\n     */ onNotify(uas) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        const event = uas.message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.logger.warn(`Failed to parse event.`);\n            uas.reject({\n                statusCode: 489\n            });\n            return;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = uas.message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.logger.warn(\"Failed to parse subscription state.\");\n            uas.reject({\n                statusCode: 489\n            });\n            return;\n        }\n        // Validate subscription state.\n        const state = subscriptionState.state;\n        switch(state){\n            case \"pending\":\n                break;\n            case \"active\":\n                break;\n            case \"terminated\":\n                break;\n            default:\n                this.logger.warn(`Invalid subscription state ${state}`);\n                uas.reject({\n                    statusCode: 489\n                });\n                return;\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (state !== \"terminated\") {\n            // The Contact header field MUST be present and contain exactly one SIP\n            // or SIPS URI in any request that can result in the establishment of a\n            // dialog.\n            // https://tools.ietf.org/html/rfc3261#section-8.1.1.8\n            const contact = uas.message.parseHeader(\"contact\");\n            if (!contact) {\n                this.logger.warn(\"Failed to parse contact.\");\n                uas.reject({\n                    statusCode: 489\n                });\n                return;\n            }\n        }\n        // In accordance with the rules for proxying non-INVITE requests as\n        // defined in [RFC3261], successful SUBSCRIBE requests will receive only\n        // one 200-class response; however, due to forking, the subscription may\n        // have been accepted by multiple nodes.  The subscriber MUST therefore\n        // be prepared to receive NOTIFY requests with \"From:\" tags that differ\n        // from the \"To:\" tag received in the SUBSCRIBE 200-class response.\n        //\n        // If multiple NOTIFY requests are received in different dialogs in\n        // response to a single SUBSCRIBE request, each dialog represents a\n        // different destination to which the SUBSCRIBE request was forked.\n        // Subscriber handling in such situations varies by event package; see\n        // Section 5.4.9 for details.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.4\n        // Each event package MUST specify whether forked SUBSCRIBE requests are\n        // allowed to install multiple subscriptions.\n        //\n        // If such behavior is not allowed, the first potential dialog-\n        // establishing message will create a dialog.  All subsequent NOTIFY\n        // requests that correspond to the SUBSCRIBE request (i.e., have\n        // matching \"To\", \"From\", \"Call-ID\", and \"Event\" header fields, as well\n        // as \"From\" header field \"tag\" parameter and \"Event\" header field \"id\"\n        // parameter) but that do not match the dialog would be rejected with a\n        // 481 response.  Note that the 200-class response to the SUBSCRIBE\n        // request can arrive after a matching NOTIFY request has been received;\n        // such responses might not correlate to the same dialog established by\n        // the NOTIFY request.  Except as required to complete the SUBSCRIBE\n        // transaction, such non-matching 200-class responses are ignored.\n        //\n        // If installing of multiple subscriptions by way of a single forked\n        // SUBSCRIBE request is allowed, the subscriber establishes a new dialog\n        // towards each notifier by returning a 200-class response to each\n        // NOTIFY request.  Each dialog is then handled as its own entity and is\n        // refreshed independently of the other dialogs.\n        //\n        // In the case that multiple subscriptions are allowed, the event\n        // package MUST specify whether merging of the notifications to form a\n        // single state is required, and how such merging is to be performed.\n        // Note that it is possible that some event packages may be defined in\n        // such a way that each dialog is tied to a mutually exclusive state\n        // that is unaffected by the other dialogs; this MUST be clearly stated\n        // if it is the case.\n        // https://tools.ietf.org/html/rfc6665#section-5.4.9\n        // *** NOTE: This implementation is only for event packages which\n        // do not allow forked requests to install multiple subscriptions.\n        // As such and in accordance with the specification, we stop waiting\n        // and any future NOTIFY requests will be rejected with a 481.\n        if (this.dialog) throw new Error(\"Dialog already created. This implementation only supports install of single subscriptions.\");\n        this.waitNotifyStop();\n        // Update expires.\n        this.subscriptionExpires = subscriptionState.expires ? Math.min(this.subscriptionExpires, Math.max(subscriptionState.expires, 0)) : this.subscriptionExpires;\n        // Update subscription state.\n        switch(state){\n            case \"pending\":\n                this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending;\n                break;\n            case \"active\":\n                this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).Active;\n                break;\n            case \"terminated\":\n                this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated;\n                break;\n            default:\n                throw new Error(`Unrecognized state ${state}.`);\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated) {\n            // Because the dialog usage is established by the NOTIFY request, the\n            // route set at the subscriber is taken from the NOTIFY request itself,\n            // as opposed to the route set present in the 200-class response to the\n            // SUBSCRIBE request.\n            // https://tools.ietf.org/html/rfc6665#section-4.4.1\n            const dialogState = (0, $0458690b5a556a0b$export$78610d8515ef16f8).initialDialogStateForSubscription(this.message, uas.message);\n            // Subscription Initiated! :)\n            this.dialog = new (0, $0458690b5a556a0b$export$78610d8515ef16f8)(this.subscriptionEvent, this.subscriptionExpires, this.subscriptionState, this.core, dialogState);\n        }\n        // Delegate.\n        if (this.delegate && this.delegate.onNotify) {\n            const request = uas;\n            const subscription = this.dialog;\n            this.delegate.onNotify({\n                request: request,\n                subscription: subscription\n            });\n        } else uas.accept();\n    }\n    waitNotifyStart() {\n        if (!this.N) {\n            // Add ourselves to the core's subscriber map.\n            // This allows the core to route out of dialog NOTIFY messages to us.\n            this.core.subscribers.set(this.subscriberId, this);\n            this.N = setTimeout(()=>this.timerN(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_N);\n        }\n    }\n    waitNotifyStop() {\n        if (this.N) {\n            // Remove ourselves to the core's subscriber map.\n            // Any future out of dialog NOTIFY messages will be rejected with a 481.\n            this.core.subscribers.delete(this.subscriberId);\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */ receiveResponse(message) {\n        if (!this.authenticationGuard(message)) return;\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            // The \"Expires\" values present in SUBSCRIBE 200-class responses behave\n            // in the same way as they do in REGISTER responses: the server MAY\n            // shorten the interval but MUST NOT lengthen it.\n            //\n            //    If the duration specified in a SUBSCRIBE request is unacceptably\n            //    short, the notifier may be able to send a 423 response, as\n            //    described earlier in this section.\n            //\n            // 200-class responses to SUBSCRIBE requests will not generally contain\n            // any useful information beyond subscription duration; their primary\n            // purpose is to serve as a reliability mechanism.  State information\n            // will be communicated via a subsequent NOTIFY request from the\n            // notifier.\n            // https://tools.ietf.org/html/rfc6665#section-4.2.1.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (subscriptionExpiresReceived > this.subscriptionExpiresRequested) this.logger.warn(\"Expires header in a 200-class response to SUBSCRIBE with a higher value than the one in the request\");\n                if (subscriptionExpiresReceived < this.subscriptionExpires) this.subscriptionExpires = subscriptionExpiresReceived;\n            }\n            // If a NOTIFY arrived before 200-class response a dialog may have been created.\n            // Updated the dialogs expiration only if this indicates earlier expiration.\n            if (this.dialog) {\n                if (this.dialog.subscriptionExpires > this.subscriptionExpires) this.dialog.subscriptionExpires = this.subscriptionExpires;\n            }\n        }\n        if (message.statusCode && message.statusCode >= 300 && message.statusCode < 700) this.waitNotifyStop(); // No NOTIFY will be sent after a negative final response.\n        super.receiveResponse(message);\n    }\n    /**\n     * To ensure that subscribers do not wait indefinitely for a\n     * subscription to be established, a subscriber starts a Timer N, set to\n     * 64*T1, when it sends a SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription failed, and cleans up any state associated with the\n     * subscription attempt.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.4\n     */ timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE user agent client. Timed out waiting for NOTIFY.`);\n        this.waitNotifyStop();\n        if (this.delegate && this.delegate.onNotifyTimeout) this.delegate.onNotifyTimeout();\n    }\n}\n\n\n\n\nclass $13935786c397e9a0$export$1ee39f2f53fb8a20 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), core, message, delegate);\n        this.core = core;\n    }\n}\n\n\n\n\n/**\n * This is ported from UA.C.ACCEPTED_BODY_TYPES.\n * FIXME: TODO: Should be configurable/variable.\n */ const $977f1c19544cd05f$var$acceptedBodyTypes = [\n    \"application/sdp\",\n    \"application/dtmf-relay\"\n];\nclass $977f1c19544cd05f$export$1f818b2e62a6351e {\n    /**\n     * Constructor.\n     * @param configuration - Configuration.\n     * @param delegate - Delegate.\n     */ constructor(configuration, delegate = {}){\n        /** UACs. */ this.userAgentClients = new Map();\n        /** UASs. */ this.userAgentServers = new Map();\n        this.configuration = configuration;\n        this.delegate = delegate;\n        this.dialogs = new Map();\n        this.subscribers = new Map();\n        this.logger = configuration.loggerFactory.getLogger(\"sip.user-agent-core\");\n    }\n    /** Destructor. */ dispose() {\n        this.reset();\n    }\n    /** Reset. */ reset() {\n        this.dialogs.forEach((dialog)=>dialog.dispose());\n        this.dialogs.clear();\n        this.subscribers.forEach((subscriber)=>subscriber.dispose());\n        this.subscribers.clear();\n        this.userAgentClients.forEach((uac)=>uac.dispose());\n        this.userAgentClients.clear();\n        this.userAgentServers.forEach((uac)=>uac.dispose());\n        this.userAgentServers.clear();\n    }\n    /** Logger factory. */ get loggerFactory() {\n        return this.configuration.loggerFactory;\n    }\n    /** Transport. */ get transport() {\n        const transport = this.configuration.transportAccessor();\n        if (!transport) throw new Error(\"Transport undefined.\");\n        return transport;\n    }\n    /**\n     * Send INVITE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ invite(request, delegate) {\n        return new (0, $0f92a99d89cb70d4$export$6ca778570a388e6c)(this, request, delegate);\n    }\n    /**\n     * Send MESSAGE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ message(request, delegate) {\n        return new (0, $783e517297d65771$export$3602b2fd01d6e2fe)(this, request, delegate);\n    }\n    /**\n     * Send PUBLISH.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ publish(request, delegate) {\n        return new (0, $b88f78f9f1f05862$export$d7ea912f644d1be1)(this, request, delegate);\n    }\n    /**\n     * Send REGISTER.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ register(request, delegate) {\n        return new (0, $31dbebbbce838c73$export$50216c3f2f5df938)(this, request, delegate);\n    }\n    /**\n     * Send SUBSCRIBE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ subscribe(request, delegate) {\n        return new (0, $4bba609974ceb444$export$45d1cd6695d95e68)(this, request, delegate);\n    }\n    /**\n     * Send a request.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ request(request, delegate) {\n        return new (0, $2197579a8ac6d9b3$export$7c212e7e192429f3)((0, $de2fac6d73c31956$export$56b95907db972eed), this, request, delegate);\n    }\n    /**\n     * Outgoing request message factory function.\n     * @param method - Method.\n     * @param requestURI - Request-URI.\n     * @param fromURI - From URI.\n     * @param toURI - To URI.\n     * @param options - Request options.\n     * @param extraHeaders - Extra headers to add.\n     * @param body - Message body.\n     */ makeOutgoingRequestMessage(method, requestURI, fromURI, toURI, options, extraHeaders, body) {\n        // default values from user agent configuration\n        const callIdPrefix = this.configuration.sipjsId;\n        const fromDisplayName = this.configuration.displayName;\n        const forceRport = this.configuration.viaForceRport;\n        const hackViaTcp = this.configuration.hackViaTcp;\n        const optionTags = this.configuration.supportedOptionTags.slice();\n        if (method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER) optionTags.push(\"path\", \"gruu\");\n        if (method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE && (this.configuration.contact.pubGruu || this.configuration.contact.tempGruu)) optionTags.push(\"gruu\");\n        const routeSet = this.configuration.routeSet;\n        const userAgentString = this.configuration.userAgentHeaderFieldValue;\n        const viaHost = this.configuration.viaHost;\n        const defaultOptions = {\n            callIdPrefix: callIdPrefix,\n            forceRport: forceRport,\n            fromDisplayName: fromDisplayName,\n            hackViaTcp: hackViaTcp,\n            optionTags: optionTags,\n            routeSet: routeSet,\n            userAgentString: userAgentString,\n            viaHost: viaHost\n        };\n        // merge provided options with default options\n        const requestOptions = Object.assign(Object.assign({}, defaultOptions), options);\n        return new (0, $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3)(method, requestURI, fromURI, toURI, requestOptions, extraHeaders, body);\n    }\n    /**\n     * Handle an incoming request message from the transport.\n     * @param message - Incoming request message from transport layer.\n     */ receiveIncomingRequestFromTransport(message) {\n        this.receiveRequestFromTransport(message);\n    }\n    /**\n     * Handle an incoming response message from the transport.\n     * @param message - Incoming response message from transport layer.\n     */ receiveIncomingResponseFromTransport(message) {\n        this.receiveResponseFromTransport(message);\n    }\n    /**\n     * A stateless UAS is a UAS that does not maintain transaction state.\n     * It replies to requests normally, but discards any state that would\n     * ordinarily be retained by a UAS after a response has been sent.  If a\n     * stateless UAS receives a retransmission of a request, it regenerates\n     * the response and re-sends it, just as if it were replying to the first\n     * instance of the request. A UAS cannot be stateless unless the request\n     * processing for that method would always result in the same response\n     * if the requests are identical. This rules out stateless registrars,\n     * for example.  Stateless UASs do not use a transaction layer; they\n     * receive requests directly from the transport layer and send responses\n     * directly to the transport layer.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.7\n     * @param message - Incoming request message to reply to.\n     * @param statusCode - Status code to reply with.\n     */ replyStateless(message, options) {\n        const userAgent = this.configuration.userAgentHeaderFieldValue;\n        const supported = this.configuration.supportedOptionTagsResponse;\n        options = Object.assign(Object.assign({}, options), {\n            userAgent: userAgent,\n            supported: supported\n        });\n        const response = (0, $fa12ff70cdbe77c4$export$4a2399f09281a6d4)(message, options);\n        this.transport.send(response.message).catch((error)=>{\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful...\n            if (error instanceof Error) this.logger.error(error.message);\n            this.logger.error(`Transport error occurred sending stateless reply to ${message.method} request.`);\n        // TODO: Currently there is no hook to provide notification that a transport error occurred\n        // and throwing would result in an uncaught error (in promise), so we silently eat the error.\n        // Furthermore, silently eating stateless reply transport errors is arguably what we want to do here.\n        });\n        return response;\n    }\n    /**\n     * In Section 18.2.1, replace the last paragraph with:\n     *\n     * Next, the server transport attempts to match the request to a\n     * server transaction.  It does so using the matching rules described\n     * in Section 17.2.3.  If a matching server transaction is found, the\n     * request is passed to that transaction for processing.  If no match\n     * is found, the request is passed to the core, which may decide to\n     * construct a new server transaction for that request.\n     * https://tools.ietf.org/html/rfc6026#section-8.10\n     * @param message - Incoming request message from transport layer.\n     */ receiveRequestFromTransport(message) {\n        // When a request is received from the network by the server, it has to\n        // be matched to an existing transaction.  This is accomplished in the\n        // following manner.\n        //\n        // The branch parameter in the topmost Via header field of the request\n        // is examined.  If it is present and begins with the magic cookie\n        // \"z9hG4bK\", the request was generated by a client transaction\n        // compliant to this specification.  Therefore, the branch parameter\n        // will be unique across all transactions sent by that client.  The\n        // request matches a transaction if:\n        //\n        //    1. the branch parameter in the request is equal to the one in the\n        //       top Via header field of the request that created the\n        //       transaction, and\n        //\n        //    2. the sent-by value in the top Via of the request is equal to the\n        //       one in the request that created the transaction, and\n        //\n        //    3. the method of the request matches the one that created the\n        //       transaction, except for ACK, where the method of the request\n        //       that created the transaction is INVITE.\n        //\n        // This matching rule applies to both INVITE and non-INVITE transactions\n        // alike.\n        //\n        //    The sent-by value is used as part of the matching process because\n        //    there could be accidental or malicious duplication of branch\n        //    parameters from different clients.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.3\n        const transactionId = message.viaBranch; // FIXME: Currently only using rule 1...\n        const uas = this.userAgentServers.get(transactionId);\n        // When receiving an ACK that matches an existing INVITE server\n        // transaction and that does not contain a branch parameter containing\n        // the magic cookie defined in RFC 3261, the matching transaction MUST\n        // be checked to see if it is in the \"Accepted\" state.  If it is, then\n        // the ACK must be passed directly to the transaction user instead of\n        // being absorbed by the transaction state machine.  This is necessary\n        // as requests from RFC 2543 clients will not include a unique branch\n        // parameter, and the mechanisms for calculating the transaction ID from\n        // such a request will be the same for both INVITE and ACKs.\n        // https://tools.ietf.org/html/rfc6026#section-6\n        // Any ACKs received from the network while in the \"Accepted\" state MUST be\n        // passed directly to the TU and not absorbed.\n        // https://tools.ietf.org/html/rfc6026#section-7.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) {\n            if (uas && uas.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) {\n                if (uas instanceof (0, $f13700957d08a111$export$fcc77d6d1624c472)) {\n                    // These are ACKs matching an INVITE server transaction.\n                    // These should never happen with RFC 3261 compliant user agents\n                    // (would be a broken ACK to negative final response or something)\n                    // but is apparently how RFC 2543 user agents do things.\n                    // We are not currently supporting this case.\n                    // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n                    this.logger.warn(`Discarding out of dialog ACK after 2xx response sent on transaction ${transactionId}.`);\n                    return;\n                }\n            }\n        }\n        // The CANCEL method requests that the TU at the server side cancel a\n        // pending transaction.  The TU determines the transaction to be\n        // cancelled by taking the CANCEL request, and then assuming that the\n        // request method is anything but CANCEL or ACK and applying the\n        // transaction matching procedures of Section 17.2.3.  The matching\n        // transaction is the one to be cancelled.\n        // https://tools.ietf.org/html/rfc3261#section-9.2\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL) {\n            if (uas) {\n                // Regardless of the method of the original request, as long as the\n                // CANCEL matched an existing transaction, the UAS answers the CANCEL\n                // request itself with a 200 (OK) response.\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                this.replyStateless(message, {\n                    statusCode: 200\n                });\n                // If the transaction for the original request still exists, the behavior\n                // of the UAS on receiving a CANCEL request depends on whether it has already\n                // sent a final response for the original request. If it has, the CANCEL\n                // request has no effect on the processing of the original request, no\n                // effect on any session state, and no effect on the responses generated\n                // for the original request. If the UAS has not issued a final response\n                // for the original request, its behavior depends on the method of the\n                // original request. If the original request was an INVITE, the UAS\n                // SHOULD immediately respond to the INVITE with a 487 (Request\n                // Terminated).\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                if (uas.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de) && uas.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) {\n                    if (uas instanceof (0, $f13700957d08a111$export$fcc77d6d1624c472)) uas.receiveCancel(message);\n                }\n            } else // If the UAS did not find a matching transaction for the CANCEL\n            // according to the procedure above, it SHOULD respond to the CANCEL\n            // with a 481 (Call Leg/Transaction Does Not Exist).\n            // https://tools.ietf.org/html/rfc3261#section-9.2\n            this.replyStateless(message, {\n                statusCode: 481\n            });\n            return;\n        }\n        // If a matching server transaction is found, the request is passed to that\n        // transaction for processing.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        if (uas) {\n            uas.transaction.receiveRequest(message);\n            return;\n        }\n        // If no match is found, the request is passed to the core, which may decide to\n        // construct a new server transaction for that request.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        this.receiveRequest(message);\n        return;\n    }\n    /**\n     * UAC and UAS procedures depend strongly on two factors.  First, based\n     * on whether the request or response is inside or outside of a dialog,\n     * and second, based on the method of a request.  Dialogs are discussed\n     * thoroughly in Section 12; they represent a peer-to-peer relationship\n     * between user agents and are established by specific SIP methods, such\n     * as INVITE.\n     * @param message - Incoming request message.\n     */ receiveRequest(message) {\n        // 8.2 UAS Behavior\n        // UASs SHOULD process the requests in the order of the steps that\n        // follow in this section (that is, starting with authentication, then\n        // inspecting the method, the header fields, and so on throughout the\n        // remainder of this section).\n        // https://tools.ietf.org/html/rfc3261#section-8.2\n        // 8.2.1 Method Inspection\n        // Once a request is authenticated (or authentication is skipped), the\n        // UAS MUST inspect the method of the request.  If the UAS recognizes\n        // but does not support the method of a request, it MUST generate a 405\n        // (Method Not Allowed) response.  Procedures for generating responses\n        // are described in Section 8.2.6.  The UAS MUST also add an Allow\n        // header field to the 405 (Method Not Allowed) response.  The Allow\n        // header field MUST list the set of methods supported by the UAS\n        // generating the message.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.1\n        if (!(0, $4619cb33ea8b9a88$export$adbfd46aa14386de).includes(message.method)) {\n            const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n            this.replyStateless(message, {\n                statusCode: 405,\n                extraHeaders: [\n                    allowHeader\n                ]\n            });\n            return;\n        }\n        // 8.2.2 Header Inspection\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2\n        if (!message.ruri) // FIXME: A request message should always have an ruri\n        throw new Error(\"Request-URI undefined.\");\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI uses a scheme not supported by the UAS, it SHOULD\n        // reject the request with a 416 (Unsupported URI Scheme) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.ruri.scheme !== \"sip\") {\n            this.replyStateless(message, {\n                statusCode: 416\n            });\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI does not identify an address that the\n        // UAS is willing to accept requests for, it SHOULD reject\n        // the request with a 404 (Not Found) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        const ruri = message.ruri;\n        const ruriMatches = (uri)=>{\n            return !!uri && uri.user === ruri.user;\n        };\n        if (!ruriMatches(this.configuration.aor) && !(ruriMatches(this.configuration.contact.uri) || ruriMatches(this.configuration.contact.pubGruu) || ruriMatches(this.configuration.contact.tempGruu))) {\n            this.logger.warn(\"Request-URI does not point to us.\");\n            if (message.method !== (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) this.replyStateless(message, {\n                statusCode: 404\n            });\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // Other potential sources of received Request-URIs include\n        // the Contact header fields of requests and responses sent by the UA\n        // that establish or refresh dialogs.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n            if (!message.hasHeader(\"Contact\")) {\n                this.replyStateless(message, {\n                    statusCode: 400,\n                    reasonPhrase: \"Missing Contact Header\"\n                });\n                return;\n            }\n        }\n        // 8.2.2.2 Merged Requests\n        // If the request has no tag in the To header field, the UAS core MUST\n        // check the request against ongoing transactions.  If the From tag,\n        // Call-ID, and CSeq exactly match those associated with an ongoing\n        // transaction, but the request does not match that transaction (based\n        // on the matching rules in Section 17.2.3), the UAS core SHOULD\n        // generate a 482 (Loop Detected) response and pass it to the server\n        // transaction.\n        //\n        //    The same request has arrived at the UAS more than once, following\n        //    different paths, most likely due to forking.  The UAS processes\n        //    the first such request received and responds with a 482 (Loop\n        //    Detected) to the rest of them.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.2\n        if (!message.toTag) {\n            const transactionId = message.viaBranch;\n            if (!this.userAgentServers.has(transactionId)) {\n                const mergedRequest = Array.from(this.userAgentServers.values()).some((uas)=>uas.transaction.request.fromTag === message.fromTag && uas.transaction.request.callId === message.callId && uas.transaction.request.cseq === message.cseq);\n                if (mergedRequest) {\n                    this.replyStateless(message, {\n                        statusCode: 482\n                    });\n                    return;\n                }\n            }\n        }\n        // 8.2.2.3 Require\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.3\n        // TODO\n        // 8.2.3 Content Processing\n        // https://tools.ietf.org/html/rfc3261#section-8.2.3\n        // TODO\n        // 8.2.4 Applying Extensions\n        // https://tools.ietf.org/html/rfc3261#section-8.2.4\n        // TODO\n        // 8.2.5 Processing the Request\n        // Assuming all of the checks in the previous subsections are passed,\n        // the UAS processing becomes method-specific.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.5\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // In that case, the UAS first applies the same processing rules for\n        // requests outside of a dialog, discussed in Section 8.2.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (message.toTag) this.receiveInsideDialogRequest(message);\n        else this.receiveOutsideDialogRequest(message);\n        return;\n    }\n    /**\n     * Once a dialog has been established between two UAs, either of them\n     * MAY initiate new transactions as needed within the dialog.  The UA\n     * sending the request will take the UAC role for the transaction.  The\n     * UA receiving the request will take the UAS role.  Note that these may\n     * be different roles than the UAs held during the transaction that\n     * established the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2\n     * @param message - Incoming request message.\n     */ receiveInsideDialogRequest(message) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY) {\n            const event = message.parseHeader(\"Event\");\n            if (!event || !event.event) {\n                this.replyStateless(message, {\n                    statusCode: 489\n                });\n                return;\n            }\n            // FIXME: Subscriber id should also matching on event id.\n            const subscriberId = message.callId + message.toTag + event.event;\n            const subscriber = this.subscribers.get(subscriberId);\n            if (subscriber) {\n                const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n                subscriber.onNotify(uas);\n                return;\n            }\n        }\n        // Requests sent within a dialog, as any other requests, are atomic.  If\n        // a particular request is accepted by the UAS, all the state changes\n        // associated with it are performed.  If the request is rejected, none\n        // of the state changes are performed.\n        //\n        //    Note that some requests, such as INVITEs, affect several pieces of\n        //    state.\n        //\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        const dialogId = message.callId + message.toTag + message.fromTag;\n        const dialog = this.dialogs.get(dialogId);\n        if (dialog) {\n            // [Sip-implementors] Reg. SIP reinvite, UPDATE and OPTIONS\n            // You got the question right.\n            //\n            // And you got the right answer too. :-)\n            //\n            //   Thanks,\n            //   Paul\n            //\n            // Robert Sparks wrote:\n            // > So I've lost track of the question during the musing.\n            // >\n            // > I _think_ the fundamental question being asked is this:\n            // >\n            // > Is an endpoint required to reject (with a 481) an OPTIONS request that\n            // > arrives with at to-tag but does not match any existing dialog state.\n            // > (Assuming some earlier requirement hasn't forced another error code). Or\n            // > is it OK if it just sends\n            // > a 200 OK anyhow.\n            // >\n            // > My take on the collection of specs is that its _not_ ok for it to send\n            // > the 200 OK anyhow and that it is required to send\n            // > the 481. I base this primarily on these sentences from 11.2 in 3261:\n            // >\n            // >    The response to an OPTIONS is constructed using the standard rules\n            // >    for a SIP response as discussed in Section 8.2.6.  The response code\n            // >    chosen MUST be the same that would have been chosen had the request\n            // >    been an INVITE.\n            // >\n            // > Did I miss the point of the question?\n            // >\n            // > On May 15, 2008, at 12:48 PM, Paul Kyzivat wrote:\n            // >\n            // >> [Including Robert in hopes of getting his insight on this.]\n            // https://lists.cs.columbia.edu/pipermail/sip-implementors/2008-May/019178.html\n            //\n            // Requests that do not change in any way the state of a dialog may be\n            // received within a dialog (for example, an OPTIONS request).  They are\n            // processed as if they had been received outside the dialog.\n            // https://tools.ietf.org/html/rfc3261#section-12.2.2\n            if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).OPTIONS) {\n                const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n                const acceptHeader = \"Accept: \" + $977f1c19544cd05f$var$acceptedBodyTypes.toString();\n                this.replyStateless(message, {\n                    statusCode: 200,\n                    extraHeaders: [\n                        allowHeader,\n                        acceptHeader\n                    ]\n                });\n                return;\n            }\n            // Pass the incoming request to the dialog for further handling.\n            dialog.receiveRequest(message);\n            return;\n        }\n        // The most important behaviors of a stateless UAS are the following:\n        // ...\n        // o  A stateless UAS MUST ignore ACK requests.\n        // ...\n        // https://tools.ietf.org/html/rfc3261#section-8.2.7\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) // If a final response to an INVITE was sent statelessly,\n        // the corresponding ACK:\n        // - will not match an existing transaction\n        // - may have tag in the To header field\n        // - not not match any existing dialogs\n        // Absorb unmatched ACKs.\n        return;\n        // If the request has a tag in the To header field, but the dialog\n        // identifier does not match any existing dialogs, the UAS may have\n        // crashed and restarted, or it may have received a request for a\n        // different (possibly failed) UAS (the UASs can construct the To tags\n        // so that a UAS can identify that the tag was for a UAS for which it is\n        // providing recovery).  Another possibility is that the incoming\n        // request has been simply mis-routed.  Based on the To tag, the UAS MAY\n        // either accept or reject the request.  Accepting the request for\n        // acceptable To tags provides robustness, so that dialogs can persist\n        // even through crashes.  UAs wishing to support this capability must\n        // take into consideration some issues such as choosing monotonically\n        // increasing CSeq sequence numbers even across reboots, reconstructing\n        // the route set, and accepting out-of-range RTP timestamps and sequence\n        // numbers.\n        //\n        // If the UAS wishes to reject the request because it does not wish to\n        // recreate the dialog, it MUST respond to the request with a 481\n        // (Call/Transaction Does Not Exist) status code and pass that to the\n        // server transaction.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        this.replyStateless(message, {\n            statusCode: 481\n        });\n        return;\n    }\n    /**\n     * Assuming all of the checks in the previous subsections are passed,\n     * the UAS processing becomes method-specific.\n     *  https://tools.ietf.org/html/rfc3261#section-8.2.5\n     * @param message - Incoming request message.\n     */ receiveOutsideDialogRequest(message) {\n        switch(message.method){\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK:\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE:\n                // If the BYE does not match an existing dialog, the UAS core SHOULD\n                // generate a 481 (Call/Transaction Does Not Exist) response and pass\n                // that to the server transaction. This rule means that a BYE sent\n                // without tags by a UAC will be rejected.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                this.replyStateless(message, {\n                    statusCode: 481\n                });\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO:\n                // Use of the INFO method does not constitute a separate dialog usage.\n                // INFO messages are always part of, and share the fate of, an invite\n                // dialog usage [RFC5057].  INFO messages cannot be sent as part of\n                // other dialog usages, or outside an existing dialog.\n                // https://tools.ietf.org/html/rfc6086#section-1\n                this.replyStateless(message, {\n                    statusCode: 405\n                }); // Should never happen\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE:\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1\n                {\n                    const uas = new (0, $f13700957d08a111$export$fcc77d6d1624c472)(this, message);\n                    this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE:\n                // MESSAGE requests are discouraged inside a dialog.  Implementations\n                // are restricted from creating a usage for the purpose of carrying a\n                // sequence of MESSAGE requests (though some implementations use it that\n                // way, against the standard recommendation).\n                // https://tools.ietf.org/html/rfc5057#section-5.3\n                {\n                    const uas = new (0, $08a363fd15b101f9$export$5c5e9b9267eb32a0)(this, message);\n                    this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY:\n                // Obsoleted by: RFC 6665\n                // If any non-SUBSCRIBE mechanisms are defined to create subscriptions,\n                // it is the responsibility of the parties defining those mechanisms to\n                // ensure that correlation of a NOTIFY message to the corresponding\n                // subscription is possible.  Designers of such mechanisms are also\n                // warned to make a distinction between sending a NOTIFY message to a\n                // subscriber who is aware of the subscription, and sending a NOTIFY\n                // message to an unsuspecting node.  The latter behavior is invalid, and\n                // MUST receive a \"481 Subscription does not exist\" response (unless\n                // some other 400- or 500-class error code is more applicable), as\n                // described in section 3.2.4.  In other words, knowledge of a\n                // subscription must exist in both the subscriber and the notifier to be\n                // valid, even if installed via a non-SUBSCRIBE mechanism.\n                // https://tools.ietf.org/html/rfc3265#section-3.2\n                //\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                {\n                    const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n                    this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.reject({\n                        statusCode: 405\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).OPTIONS:\n                // https://tools.ietf.org/html/rfc3261#section-11.2\n                {\n                    const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n                    const acceptHeader = \"Accept: \" + $977f1c19544cd05f$var$acceptedBodyTypes.toString();\n                    this.replyStateless(message, {\n                        statusCode: 200,\n                        extraHeaders: [\n                            allowHeader,\n                            acceptHeader\n                        ]\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new (0, $61a4eb8bc96512de$export$dac239e67229cfb6)(this, message);\n                    this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject({\n                        statusCode: 405\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER:\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                {\n                    const uas = new (0, $255bb24940d3e795$export$8f00fc776af848de)(this, message);\n                    this.delegate.onRegister ? this.delegate.onRegister(uas) : uas.reject({\n                        statusCode: 405\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).SUBSCRIBE:\n                // https://tools.ietf.org/html/rfc6665#section-4.2\n                {\n                    const uas = new (0, $13935786c397e9a0$export$1ee39f2f53fb8a20)(this, message);\n                    this.delegate.onSubscribe ? this.delegate.onSubscribe(uas) : uas.reject({\n                        statusCode: 480\n                    });\n                }\n                break;\n            default:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n        }\n        return;\n    }\n    /**\n     * Responses are first processed by the transport layer and then passed\n     * up to the transaction layer.  The transaction layer performs its\n     * processing and then passes the response up to the TU.  The majority\n     * of response processing in the TU is method specific.  However, there\n     * are some general behaviors independent of the method.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3\n     * @param message - Incoming response message from transport layer.\n     */ receiveResponseFromTransport(message) {\n        // 8.1.3.1 Transaction Layer Errors\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // Handled by transaction layer callbacks.\n        // 8.1.3.2 Unrecognized Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // TODO\n        // 8.1.3.3 Vias\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.3\n        if (message.getHeaders(\"via\").length > 1) {\n            this.logger.warn(\"More than one Via header field present in the response, dropping\");\n            return;\n        }\n        // 8.1.3.4 Processing 3xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.4\n        // TODO\n        // 8.1.3.5 Processing 4xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        // TODO\n        // When the transport layer in the client receives a response, it has to\n        // determine which client transaction will handle the response, so that\n        // the processing of Sections 17.1.1 and 17.1.2 can take place.  The\n        // branch parameter in the top Via header field is used for this\n        // purpose.  A response matches a client transaction under two\n        // conditions:\n        //\n        //    1.  If the response has the same value of the branch parameter in\n        //        the top Via header field as the branch parameter in the top\n        //        Via header field of the request that created the transaction.\n        //\n        //    2.  If the method parameter in the CSeq header field matches the\n        //        method of the request that created the transaction.  The\n        //        method is needed since a CANCEL request constitutes a\n        //        different transaction, but shares the same value of the branch\n        //        parameter.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.3\n        const userAgentClientId = message.viaBranch + message.method;\n        const userAgentClient = this.userAgentClients.get(userAgentClientId);\n        // The client transport uses the matching procedures of Section\n        // 17.1.3 to attempt to match the response to an existing\n        // transaction.  If there is a match, the response MUST be passed to\n        // that transaction.  Otherwise, any element other than a stateless\n        // proxy MUST silently discard the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.9\n        if (userAgentClient) userAgentClient.transaction.receiveResponse(message);\n        else this.logger.warn(`Discarding unmatched ${message.statusCode} response to ${message.method} ${userAgentClientId}.`);\n    }\n}\n\n\n\n\nvar $9cf814dc8665aa70$exports = {};\n\n$parcel$export($9cf814dc8665aa70$exports, \"Transport\", () => $9cf814dc8665aa70$export$86495b081fef8e52);\n\n\nclass $bf477f57ab193740$export$318864ff8d108164 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"An error occurred during state transition.\");\n    }\n}\n\n\n/**\n * {@link Transport} state.\n *\n * @remarks\n * The {@link Transport} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                    ______________________________\n *                   |    ____________              |\n * Transport         v   v            |             |\n * Constructed -> Disconnected -> Connecting -> Connected -> Disconnecting\n *                     ^            ^    |_____________________^  |  |\n *                     |            |_____________________________|  |\n *                     |_____________________________________________|\n * ```\n * @public\n */ var $d7bd026653891694$export$4157d41c66f4c7e1;\n(function(TransportState) {\n    /**\n     * The `connect()` method was called.\n     */ TransportState[\"Connecting\"] = \"Connecting\";\n    /**\n     * The `connect()` method resolved.\n     */ TransportState[\"Connected\"] = \"Connected\";\n    /**\n     * The `disconnect()` method was called.\n     */ TransportState[\"Disconnecting\"] = \"Disconnecting\";\n    /**\n     * The `connect()` method was rejected, or\n     * the `disconnect()` method completed, or\n     * network connectivity was lost.\n     */ TransportState[\"Disconnected\"] = \"Disconnected\";\n})($d7bd026653891694$export$4157d41c66f4c7e1 = $d7bd026653891694$export$4157d41c66f4c7e1 || ($d7bd026653891694$export$4157d41c66f4c7e1 = {}));\n\n\n\nclass $9cf814dc8665aa70$export$86495b081fef8e52 {\n    constructor(logger, options){\n        this._state = (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected;\n        this.transitioningState = false;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // logger\n        this.logger = logger;\n        // guard deprecated options (remove this in version 16.x)\n        if (options) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = options;\n            const wsServersDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.wsServers;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.maxReconnectionAttempts;\n            if (wsServersDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"wsServers\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (wsServersDeprecated && !options.server) {\n                if (typeof wsServersDeprecated === \"string\") options.server = wsServersDeprecated;\n                if (wsServersDeprecated instanceof Array) options.server = wsServersDeprecated[0];\n            }\n        }\n        // initialize configuration\n        this.configuration = Object.assign(Object.assign({}, $9cf814dc8665aa70$export$86495b081fef8e52.defaultOptions), options);\n        // validate server URL\n        const url = this.configuration.server;\n        const parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(url, \"absoluteURI\");\n        if (parsed === -1) {\n            this.logger.error(`Invalid WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid WebSocket Server URL\");\n        }\n        if (![\n            \"wss\",\n            \"ws\",\n            \"udp\"\n        ].includes(parsed.scheme)) {\n            this.logger.error(`Invalid scheme in WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid scheme in WebSocket Server URL\");\n        }\n        this._protocol = parsed.scheme.toUpperCase();\n    }\n    dispose() {\n        return this.disconnect();\n    }\n    /**\n     * The protocol.\n     *\n     * @remarks\n     * Formatted as defined for the Via header sent-protocol transport.\n     * https://tools.ietf.org/html/rfc3261#section-20.42\n     */ get protocol() {\n        return this._protocol;\n    }\n    /**\n     * The URL of the WebSocket Server.\n     */ get server() {\n        return this.configuration.server;\n    }\n    /**\n     * Transport state.\n     */ get state() {\n        return this._state;\n    }\n    /**\n     * Transport state change emitter.\n     */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The WebSocket.\n     */ get ws() {\n        return this._ws;\n    }\n    /**\n     * Connect to network.\n     * Resolves once connected. Otherwise rejects with an Error.\n     */ connect() {\n        return this._connect();\n    }\n    /**\n     * Disconnect from network.\n     * Resolves once disconnected. Otherwise rejects with an Error.\n     */ disconnect() {\n        return this._disconnect();\n    }\n    /**\n     * Returns true if the `state` equals \"Connected\".\n     * @remarks\n     * This is equivalent to `state === TransportState.Connected`.\n     */ isConnected() {\n        return this.state === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected;\n    }\n    /**\n     * Sends a message.\n     * Resolves once message is sent. Otherwise rejects with an Error.\n     * @param message - Message to send.\n     */ send(message) {\n        // Error handling is independent of whether the message was a request or\n        // response.\n        //\n        // If the transport user asks for a message to be sent over an\n        // unreliable transport, and the result is an ICMP error, the behavior\n        // depends on the type of ICMP error.  Host, network, port or protocol\n        // unreachable errors, or parameter problem errors SHOULD cause the\n        // transport layer to inform the transport user of a failure in sending.\n        // Source quench and TTL exceeded ICMP errors SHOULD be ignored.\n        //\n        // If the transport user asks for a request to be sent over a reliable\n        // transport, and the result is a connection failure, the transport\n        // layer SHOULD inform the transport user of a failure in sending.\n        // https://tools.ietf.org/html/rfc3261#section-18.4\n        return this._send(message);\n    }\n    _connect() {\n        this.logger.log(`Connecting ${this.server}`);\n        switch(this.state){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                // If `state` is \"Connecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting));\n                if (!this.connectPromise) throw new Error(\"Connect promise must be defined.\");\n                return this.connectPromise; // Already connecting\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                // If `state` is \"Connected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting));\n                if (this.connectPromise) throw new Error(\"Connect promise must not be defined.\");\n                return Promise.resolve(); // Already connected\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) throw new Error(\"Connect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                // If `state` is \"Disconnected\" `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) throw new Error(\"Connect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        let ws;\n        try {\n            // WebSocket()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/WebSocket\n            ws = new WebSocket(this.server, \"sip\");\n            ws.binaryType = \"arraybuffer\"; // set data type of received binary messages\n            ws.addEventListener(\"close\", (ev)=>this.onWebSocketClose(ev, ws));\n            ws.addEventListener(\"error\", (ev)=>this.onWebSocketError(ev, ws));\n            ws.addEventListener(\"open\", (ev)=>this.onWebSocketOpen(ev, ws));\n            ws.addEventListener(\"message\", (ev)=>this.onWebSocketMessage(ev, ws));\n            this._ws = ws;\n        } catch (error) {\n            this._ws = undefined;\n            this.logger.error(\"WebSocket construction failed.\");\n            this.logger.error(error.toString());\n            return new Promise((resolve, reject)=>{\n                this.connectResolve = resolve;\n                this.connectReject = reject;\n                // The `state` MUST transition to \"Disconnecting\" or \"Disconnected\" before rejecting\n                this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected, error);\n            });\n        }\n        this.connectPromise = new Promise((resolve, reject)=>{\n            this.connectResolve = resolve;\n            this.connectReject = reject;\n            this.connectTimeout = setTimeout(()=>{\n                this.logger.warn(\"Connect timed out. Exceeded time set in configuration.connectionTimeout: \" + this.configuration.connectionTimeout + \"s.\");\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            }, this.configuration.connectionTimeout * 1000);\n        });\n        return this.connectPromise;\n    }\n    _disconnect() {\n        this.logger.log(`Disconnecting ${this.server}`);\n        switch(this.state){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                // If `state` is \"Connecting\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) throw new Error(\"Disconnect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                // If `state` is \"Connected\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) throw new Error(\"Disconnect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting));\n                if (!this.disconnectPromise) throw new Error(\"Disconnect promise must be defined.\");\n                return this.disconnectPromise; // Already disconnecting\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                // If `state` is \"Disconnected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting));\n                if (this.disconnectPromise) throw new Error(\"Disconnect promise must not be defined.\");\n                return Promise.resolve(); // Already disconnected\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        if (!this._ws) throw new Error(\"WebSocket must be defined.\");\n        const ws = this._ws;\n        this.disconnectPromise = new Promise((resolve, reject)=>{\n            this.disconnectResolve = resolve;\n            this.disconnectReject = reject;\n            try {\n                // WebSocket.close()\n                // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/close\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            } catch (error) {\n                // Treating this as a coding error as it apparently can only happen\n                // if you pass close() invalid parameters (so it should never happen)\n                this.logger.error(\"WebSocket close failed.\");\n                this.logger.error(error.toString());\n                throw error;\n            }\n        });\n        return this.disconnectPromise;\n    }\n    _send(message) {\n        if (this.configuration.traceSip === true) this.logger.log(\"Sending WebSocket message:\\n\\n\" + message + \"\\n\");\n        if (this._state !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) return Promise.reject(new Error(\"Not connected.\"));\n        if (!this._ws) throw new Error(\"WebSocket undefined.\");\n        try {\n            // WebSocket.send()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send\n            this._ws.send(message);\n        } catch (error) {\n            if (error instanceof Error) return Promise.reject(error);\n            return Promise.reject(new Error(\"WebSocket send failed.\"));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * WebSocket \"onclose\" event handler.\n     * @param ev - Event.\n     */ onWebSocketClose(ev, ws) {\n        if (ws !== this._ws) return;\n        const message = `WebSocket closed ${this.server} (code: ${ev.code})`;\n        const error = !this.disconnectPromise ? new Error(message) : undefined;\n        if (error) this.logger.warn(\"WebSocket closed unexpectedly\");\n        this.logger.log(message);\n        // We are about to transition to disconnected, so clear our web socket\n        this._ws = undefined;\n        // The `state` MUST transition to \"Disconnected\" before resolving (assuming `state` is not already \"Disconnected\").\n        this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected, error);\n    }\n    /**\n     * WebSocket \"onerror\" event handler.\n     * @param ev - Event.\n     */ onWebSocketError(ev, ws) {\n        if (ws !== this._ws) return;\n        this.logger.error(\"WebSocket error occurred.\");\n    }\n    /**\n     * WebSocket \"onmessage\" event handler.\n     * @param ev - Event.\n     */ onWebSocketMessage(ev, ws) {\n        if (ws !== this._ws) return;\n        const data = ev.data;\n        let finishedData;\n        // CRLF Keep Alive response from server. Clear our keep alive timeout.\n        if (/^(\\r\\n)+$/.test(data)) {\n            this.clearKeepAliveTimeout();\n            if (this.configuration.traceSip === true) this.logger.log(\"Received WebSocket message with CRLF Keep Alive response\");\n            return;\n        }\n        if (!data) {\n            this.logger.warn(\"Received empty message, discarding...\");\n            return;\n        }\n        if (typeof data !== \"string\") {\n            // WebSocket binary message.\n            try {\n                finishedData = new TextDecoder().decode(new Uint8Array(data));\n            // TextDecoder (above) is not supported by old browsers, but it correctly decodes UTF-8.\n            // The line below is an ISO 8859-1 (Latin 1) decoder, so just UTF-8 code points that are 1 byte.\n            // It's old code and works in old browsers (IE), so leaving it here in a comment in case someone needs it.\n            // finishedData = String.fromCharCode.apply(null, (new Uint8Array(data) as unknown as Array<number>));\n            } catch (err) {\n                this.logger.error(err.toString());\n                this.logger.error(\"Received WebSocket binary message failed to be converted into string, message discarded\");\n                return;\n            }\n            if (this.configuration.traceSip === true) this.logger.log(\"Received WebSocket binary message:\\n\\n\" + finishedData + \"\\n\");\n        } else {\n            // WebSocket text message.\n            finishedData = data;\n            if (this.configuration.traceSip === true) this.logger.log(\"Received WebSocket text message:\\n\\n\" + finishedData + \"\\n\");\n        }\n        if (this.state !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) {\n            this.logger.warn(\"Received message while not connected, discarding...\");\n            return;\n        }\n        if (this.onMessage) try {\n            this.onMessage(finishedData);\n        } catch (e) {\n            this.logger.error(e.toString());\n            this.logger.error(\"Exception thrown by onMessage callback\");\n            throw e; // rethrow unhandled exception\n        }\n    }\n    /**\n     * WebSocket \"onopen\" event handler.\n     * @param ev - Event.\n     */ onWebSocketOpen(ev, ws) {\n        if (ws !== this._ws) return;\n        if (this._state === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) {\n            this.logger.log(`WebSocket opened ${this.server}`);\n            this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected);\n        }\n    }\n    /**\n     * Helper function to generate an Error.\n     * @param state - State transitioning to.\n     */ transitionLoopDetectedError(state) {\n        let message = `A state transition loop has been detected.`;\n        message += ` An attempt to transition from ${this._state} to ${state} before the prior transition completed.`;\n        message += ` Perhaps you are synchronously calling connect() or disconnect() from a callback or state change handler?`;\n        this.logger.error(message);\n        return new (0, $bf477f57ab193740$export$318864ff8d108164)(\"Loop detected.\");\n    }\n    /**\n     * Transition transport state.\n     * @internal\n     */ transitionState(newState, error) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        if (this.transitioningState) throw this.transitionLoopDetectedError(newState);\n        this.transitioningState = true;\n        // Validate state transition\n        switch(this._state){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected) invalidTransition();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected) invalidTransition();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected) invalidTransition();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        const oldState = this._state;\n        this._state = newState;\n        // Local copies of connect promises (guarding against callbacks changing them indirectly)\n        // const connectPromise = this.connectPromise;\n        const connectResolve = this.connectResolve;\n        const connectReject = this.connectReject;\n        // Reset connect promises if no longer connecting\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) {\n            this.connectPromise = undefined;\n            this.connectResolve = undefined;\n            this.connectReject = undefined;\n        }\n        // Local copies of disconnect promises (guarding against callbacks changing them indirectly)\n        // const disconnectPromise = this.disconnectPromise;\n        const disconnectResolve = this.disconnectResolve;\n        const disconnectReject = this.disconnectReject;\n        // Reset disconnect promises if no longer disconnecting\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting) {\n            this.disconnectPromise = undefined;\n            this.disconnectResolve = undefined;\n            this.disconnectReject = undefined;\n        }\n        // Clear any outstanding connect timeout\n        if (this.connectTimeout) {\n            clearTimeout(this.connectTimeout);\n            this.connectTimeout = undefined;\n        }\n        this.logger.log(`Transitioned from ${oldState} to ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        //  Transition to Connected\n        if (newState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) {\n            this.startSendingKeepAlives();\n            if (this.onConnect) try {\n                this.onConnect();\n            } catch (e) {\n                this.logger.error(e.toString());\n                this.logger.error(\"Exception thrown by onConnect callback\");\n                throw e; // rethrow unhandled exception\n            }\n        }\n        //  Transition from Connected\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) {\n            this.stopSendingKeepAlives();\n            if (this.onDisconnect) try {\n                if (error) this.onDisconnect(error);\n                else this.onDisconnect();\n            } catch (e) {\n                this.logger.error(e.toString());\n                this.logger.error(\"Exception thrown by onDisconnect callback\");\n                throw e; // rethrow unhandled exception\n            }\n        }\n        // Complete connect promise\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) {\n            if (!connectResolve) throw new Error(\"Connect resolve undefined.\");\n            if (!connectReject) throw new Error(\"Connect reject undefined.\");\n            newState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected ? connectResolve() : connectReject(error || new Error(\"Connect aborted.\"));\n        }\n        // Complete disconnect promise\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting) {\n            if (!disconnectResolve) throw new Error(\"Disconnect resolve undefined.\");\n            if (!disconnectReject) throw new Error(\"Disconnect reject undefined.\");\n            newState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected ? disconnectResolve() : disconnectReject(error || new Error(\"Disconnect aborted.\"));\n        }\n        this.transitioningState = false;\n    }\n    // TODO: Review \"KeepAlive Stuff\".\n    // It is not clear if it works and there are no tests for it.\n    // It was blindly lifted the keep alive code unchanged from earlier transport code.\n    //\n    // From the RFC...\n    //\n    // SIP WebSocket Clients and Servers may keep their WebSocket\n    // connections open by sending periodic WebSocket \"Ping\" frames as\n    // described in [RFC6455], Section 5.5.2.\n    // ...\n    // The indication and use of the CRLF NAT keep-alive mechanism defined\n    // for SIP connection-oriented transports in [RFC5626], Section 3.5.1 or\n    // [RFC6223] are, of course, usable over the transport defined in this\n    // specification.\n    // https://tools.ietf.org/html/rfc7118#section-6\n    //\n    // and...\n    //\n    // The Ping frame contains an opcode of 0x9.\n    // https://tools.ietf.org/html/rfc6455#section-5.5.2\n    //\n    // ==============================\n    // KeepAlive Stuff\n    // ==============================\n    clearKeepAliveTimeout() {\n        if (this.keepAliveDebounceTimeout) clearTimeout(this.keepAliveDebounceTimeout);\n        this.keepAliveDebounceTimeout = undefined;\n    }\n    /**\n     * Send a keep-alive (a double-CRLF sequence).\n     */ sendKeepAlive() {\n        if (this.keepAliveDebounceTimeout) // We already have an outstanding keep alive, do not send another.\n        return Promise.resolve();\n        this.keepAliveDebounceTimeout = setTimeout(()=>{\n            this.clearKeepAliveTimeout();\n        }, this.configuration.keepAliveDebounce * 1000);\n        return this.send(\"\\r\\n\\r\\n\");\n    }\n    /**\n     * Start sending keep-alives.\n     */ startSendingKeepAlives() {\n        // Compute an amount of time in seconds to wait before sending another keep-alive.\n        const computeKeepAliveTimeout = (upperBound)=>{\n            const lowerBound = upperBound * 0.8;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        if (this.configuration.keepAliveInterval && !this.keepAliveInterval) this.keepAliveInterval = setInterval(()=>{\n            this.sendKeepAlive();\n            this.startSendingKeepAlives();\n        }, computeKeepAliveTimeout(this.configuration.keepAliveInterval));\n    }\n    /**\n     * Stop sending keep-alives.\n     */ stopSendingKeepAlives() {\n        if (this.keepAliveInterval) clearInterval(this.keepAliveInterval);\n        if (this.keepAliveDebounceTimeout) clearTimeout(this.keepAliveDebounceTimeout);\n        this.keepAliveInterval = undefined;\n        this.keepAliveDebounceTimeout = undefined;\n    }\n}\n$9cf814dc8665aa70$export$86495b081fef8e52.defaultOptions = {\n    server: \"\",\n    connectionTimeout: 5,\n    keepAliveInterval: 0,\n    keepAliveDebounce: 10,\n    traceSip: true\n};\n\n\nconst $ddfbfa612c415772$export$bb0adf1d8db61383 = \"0.21.1\";\n\n\n\n\n\n\n\n\n/**\n * {@link UserAgent} state.\n * @remarks\n * Valid state transitions:\n * ```\n * 1. \"Started\" --> \"Stopped\"\n * 2. \"Stopped\" --> \"Started\"\n * ```\n * @public\n */ var $baefc8527022eb6d$export$c1084e0d257c3742;\n(function(UserAgentState) {\n    UserAgentState[\"Started\"] = \"Started\";\n    UserAgentState[\"Stopped\"] = \"Stopped\";\n})($baefc8527022eb6d$export$c1084e0d257c3742 = $baefc8527022eb6d$export$c1084e0d257c3742 || ($baefc8527022eb6d$export$c1084e0d257c3742 = {}));\n\n\nclass $3c1b5dfaafd922c7$export$5fba5e10934a4faf {\n    /**\n     * Constructs a new instance of the `UserAgent` class.\n     * @param options - Options bucket. See {@link UserAgentOptions} for details.\n     */ constructor(options = {}){\n        /** @internal */ this._publishers = {};\n        /** @internal */ this._registerers = {};\n        /** @internal */ this._sessions = {};\n        /** @internal */ this._subscriptions = {};\n        this._state = (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // initialize delegate\n        this.delegate = options.delegate;\n        // initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, $3c1b5dfaafd922c7$export$5fba5e10934a4faf.defaultOptions()), {\n            sipjsId: (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(5)\n        }), {\n            uri: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", \"anonymous.\" + (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(6), \"anonymous.invalid\")\n        }), {\n            viaHost: (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(12) + \".invalid\"\n        }), $3c1b5dfaafd922c7$export$5fba5e10934a4faf.stripUndefinedProperties(options));\n        // viaHost is hack\n        if (this.options.hackIpInContact) {\n            if (typeof this.options.hackIpInContact === \"boolean\" && this.options.hackIpInContact) {\n                const from = 1;\n                const to = 254;\n                const octet = Math.floor(Math.random() * (to - from + 1) + from);\n                // random Test-Net IP (http://tools.ietf.org/html/rfc5735)\n                this.options.viaHost = \"192.0.2.\" + octet;\n            } else if (this.options.hackIpInContact) this.options.viaHost = this.options.hackIpInContact;\n        }\n        // initialize logger & logger factory\n        this.loggerFactory = new (0, $98fe2e5334faa23b$export$e0f5ef03cd95415a)();\n        this.logger = this.loggerFactory.getLogger(\"sip.UserAgent\");\n        this.loggerFactory.builtinEnabled = this.options.logBuiltinEnabled;\n        this.loggerFactory.connector = this.options.logConnector;\n        switch(this.options.logLevel){\n            case \"error\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).error;\n                break;\n            case \"warn\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).warn;\n                break;\n            case \"log\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log;\n                break;\n            case \"debug\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).debug;\n                break;\n            default:\n                break;\n        }\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key)=>{\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch(key){\n                    case \"uri\":\n                    case \"sessionDescriptionHandlerFactory\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + value);\n                        break;\n                    case \"authorizationPassword\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + \"NOT SHOWN\");\n                        break;\n                    case \"transportConstructor\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + value.name);\n                        break;\n                    default:\n                        this.logger.log(\"\\xb7 \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // guard deprecated transport options (remove this in version 16.x)\n        if (this.options.transportOptions) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = this.options.transportOptions;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated.maxReconnectionAttempts;\n            const reconnectionTimeoutDeprecated = optionsDeprecated.reconnectionTimeout;\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (reconnectionTimeoutDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"reconnectionTimeout\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (options.reconnectionDelay === undefined && reconnectionTimeoutDeprecated !== undefined) this.options.reconnectionDelay = reconnectionTimeoutDeprecated;\n            if (options.reconnectionAttempts === undefined && maxReconnectionAttemptsDeprecated !== undefined) this.options.reconnectionAttempts = maxReconnectionAttemptsDeprecated;\n        }\n        // guard deprecated user agent options (remove this in version 16.x)\n        if (options.reconnectionDelay !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionDelay\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        if (options.reconnectionAttempts !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionAttempts\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        // Initialize Transport\n        this._transport = new this.options.transportConstructor(this.getLogger(\"sip.Transport\"), this.options.transportOptions);\n        this.initTransportCallbacks();\n        // Initialize Contact\n        this._contact = this.initContact();\n        // Set instance id\n        this._instanceId = this.options.instanceId ? this.options.instanceId : $3c1b5dfaafd922c7$export$5fba5e10934a4faf.newUUID();\n        if ((0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(this._instanceId, \"uuid\") === -1) throw new Error(\"Invalid instanceId.\");\n        // Initialize UserAgentCore\n        this._userAgentCore = this.initCore();\n    }\n    /**\n     * Create a URI instance from a string.\n     * @param uri - The string to parse.\n     *\n     * @remarks\n     * Returns undefined if the syntax of the URI is invalid.\n     * The syntax must conform to a SIP URI as defined in the RFC.\n     * 25 Augmented BNF for the SIP Protocol\n     * https://tools.ietf.org/html/rfc3261#section-25\n     *\n     * @example\n     * ```ts\n     * const uri = UserAgent.makeURI(\"sip:edgar@example.com\");\n     * ```\n     */ static makeURI(uri) {\n        return (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(uri);\n    }\n    /** Default user agent options. */ static defaultOptions() {\n        return {\n            allowLegacyNotifications: false,\n            authorizationHa1: \"\",\n            authorizationPassword: \"\",\n            authorizationUsername: \"\",\n            delegate: {},\n            contactName: \"\",\n            contactParams: {\n                transport: \"ws\"\n            },\n            displayName: \"\",\n            forceRport: false,\n            gracefulShutdown: true,\n            hackAllowUnregisteredOptionTags: false,\n            hackIpInContact: false,\n            hackViaTcp: false,\n            instanceId: \"\",\n            instanceIdAlwaysAdded: false,\n            logBuiltinEnabled: true,\n            logConfiguration: true,\n            logConnector: ()=>{\n            /* noop */ },\n            logLevel: \"log\",\n            noAnswerTimeout: 60,\n            preloadedRouteSet: [],\n            reconnectionAttempts: 0,\n            reconnectionDelay: 4,\n            sendInitialProvisionalResponse: true,\n            sessionDescriptionHandlerFactory: (0, $1fb45aa3bdfbf189$export$882edbaac6eb455)(),\n            sessionDescriptionHandlerFactoryOptions: {},\n            sipExtension100rel: (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Unsupported,\n            sipExtensionReplaces: (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Unsupported,\n            sipExtensionExtraSupported: [],\n            sipjsId: \"\",\n            transportConstructor: (0, $9cf814dc8665aa70$export$86495b081fef8e52),\n            transportOptions: {},\n            uri: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            userAgentString: \"SIP.js/\" + (0, $ddfbfa612c415772$export$bb0adf1d8db61383),\n            viaHost: \"\"\n        };\n    }\n    // http://stackoverflow.com/users/109538/broofa\n    static newUUID() {\n        const UUID = \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, (c)=>{\n            const r = Math.floor(Math.random() * 16);\n            const v = c === \"x\" ? r : r % 4 + 8;\n            return v.toString(16);\n        });\n        return UUID;\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */ static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key)=>{\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            object[key] = options[key];\n            return object;\n        }, {});\n    }\n    /**\n     * User agent configuration.\n     */ get configuration() {\n        return this.options;\n    }\n    /**\n     * User agent contact.\n     */ get contact() {\n        return this._contact;\n    }\n    /**\n     * User agent instance id.\n     */ get instanceId() {\n        return this._instanceId;\n    }\n    /**\n     * User agent state.\n     */ get state() {\n        return this._state;\n    }\n    /**\n     * User agent state change emitter.\n     */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * User agent transport.\n     */ get transport() {\n        return this._transport;\n    }\n    /**\n     * User agent core.\n     */ get userAgentCore() {\n        return this._userAgentCore;\n    }\n    /**\n     * The logger.\n     */ getLogger(category, label) {\n        return this.loggerFactory.getLogger(category, label);\n    }\n    /**\n     * The logger factory.\n     */ getLoggerFactory() {\n        return this.loggerFactory;\n    }\n    /**\n     * True if transport is connected.\n     */ isConnected() {\n        return this.transport.isConnected();\n    }\n    /**\n     * Reconnect the transport.\n     */ reconnect() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return Promise.reject(new Error(\"User agent stopped.\"));\n        // Make sure we don't call synchronously\n        return Promise.resolve().then(()=>this.transport.connect());\n    }\n    /**\n     * Start the user agent.\n     *\n     * @remarks\n     * Resolves if transport connects, otherwise rejects.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * @example\n     * ```ts\n     * userAgent.start()\n     *   .then(() => {\n     *     // userAgent.isConnected() === true\n     *   })\n     *   .catch((error: Error) => {\n     *     // userAgent.isConnected() === false\n     *   });\n     * ```\n     */ start() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started) {\n            this.logger.warn(`User agent already started`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Starting ${this.configuration.uri}`);\n        // Transition state\n        this.transitionState((0, $baefc8527022eb6d$export$c1084e0d257c3742).Started);\n        return this.transport.connect();\n    }\n    /**\n     * Stop the user agent.\n     *\n     * @remarks\n     * Resolves when the user agent has completed a graceful shutdown.\n     * ```txt\n     * 1) Sessions terminate.\n     * 2) Registerers unregister.\n     * 3) Subscribers unsubscribe.\n     * 4) Publishers unpublish.\n     * 5) Transport disconnects.\n     * 6) User Agent Core resets.\n     * ```\n     * The user agent state transistions to stopped once these steps have been completed.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * NOTE: While this is a \"graceful shutdown\", it can also be very slow one if you\n     * are waiting for the returned Promise to resolve. The disposal of the clients and\n     * dialogs is done serially - waiting on one to finish before moving on to the next.\n     * This can be slow if there are lot of subscriptions to unsubscribe for example.\n     *\n     * THE SLOW PACE IS INTENTIONAL!\n     * While one could spin them all down in parallel, this could slam the remote server.\n     * It is bad practice to denial of service attack (DoS attack) servers!!!\n     * Moreover, production servers will automatically blacklist clients which send too\n     * many requests in too short a period of time - dropping any additional requests.\n     *\n     * If a different approach to disposing is needed, one can implement whatever is\n     * needed and execute that prior to calling `stop()`. Alternatively one may simply\n     * not wait for the Promise returned by `stop()` to complete.\n     */ async stop() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) {\n            this.logger.warn(`User agent already stopped`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Stopping ${this.configuration.uri}`);\n        // The default behavior is to cleanup dialogs and registrations. This is not that...\n        if (!this.options.gracefulShutdown) {\n            // Dispose of the transport (disconnecting)\n            this.logger.log(`Dispose of transport`);\n            this.transport.dispose().catch((error)=>{\n                this.logger.error(error.message);\n                throw error;\n            });\n            // Dispose of the user agent core (resetting)\n            this.logger.log(`Dispose of core`);\n            this.userAgentCore.dispose();\n            // Reset dialogs and registrations\n            this._publishers = {};\n            this._registerers = {};\n            this._sessions = {};\n            this._subscriptions = {};\n            this.transitionState((0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped);\n            return Promise.resolve();\n        }\n        // Be careful here to use a local references as start() can be called\n        // again before we complete and we don't want to touch new clients\n        // and we don't want to step on the new instances (or vice versa).\n        const publishers = Object.assign({}, this._publishers);\n        const registerers = Object.assign({}, this._registerers);\n        const sessions = Object.assign({}, this._sessions);\n        const subscriptions = Object.assign({}, this._subscriptions);\n        const transport = this.transport;\n        const userAgentCore = this.userAgentCore;\n        //\n        // At this point we have completed the state transition and everything\n        // following will effectively run async and MUST NOT cause any issues\n        // if UserAgent.start() is called while the following code continues.\n        //\n        // TODO: Minor optimization.\n        // The disposal in all cases involves, in part, sending messages which\n        // is not worth doing if the transport is not connected as we know attempting\n        // to send messages will be futile. But none of these disposal methods check\n        // if that's is the case and it would be easy for them to do so at this point.\n        // Dispose of Registerers\n        this.logger.log(`Dispose of registerers`);\n        for(const id in registerers)if (registerers[id]) await registerers[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._registerers[id];\n            throw error;\n        });\n        // Dispose of Sessions\n        this.logger.log(`Dispose of sessions`);\n        for(const id in sessions)if (sessions[id]) await sessions[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._sessions[id];\n            throw error;\n        });\n        // Dispose of Subscriptions\n        this.logger.log(`Dispose of subscriptions`);\n        for(const id in subscriptions)if (subscriptions[id]) await subscriptions[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._subscriptions[id];\n            throw error;\n        });\n        // Dispose of Publishers\n        this.logger.log(`Dispose of publishers`);\n        for(const id in publishers)if (publishers[id]) await publishers[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._publishers[id];\n            throw error;\n        });\n        // Dispose of the transport (disconnecting)\n        this.logger.log(`Dispose of transport`);\n        await transport.dispose().catch((error)=>{\n            this.logger.error(error.message);\n            throw error;\n        });\n        // Dispose of the user agent core (resetting)\n        this.logger.log(`Dispose of core`);\n        userAgentCore.dispose();\n        // Transition state\n        this.transitionState((0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped);\n    }\n    /**\n     * Used to avoid circular references.\n     * @internal\n     */ _makeInviter(targetURI, options) {\n        return new (0, $989df868235ee8e3$export$2215cc52469fcfa0)(this, targetURI, options);\n    }\n    /**\n     * Attempt reconnection up to `maxReconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */ attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Maximum reconnection attempts reached`);\n            return;\n        }\n        this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        setTimeout(()=>{\n            this.reconnect().then(()=>{\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n            }).catch((error)=>{\n                this.logger.error(error.message);\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Initialize contact.\n     */ initContact() {\n        const contactName = this.options.contactName !== \"\" ? this.options.contactName : (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(8);\n        const contactParams = this.options.contactParams;\n        const contact = {\n            pubGruu: undefined,\n            tempGruu: undefined,\n            uri: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", contactName, this.options.viaHost, undefined, contactParams),\n            toString: (contactToStringOptions = {})=>{\n                const anonymous = contactToStringOptions.anonymous || false;\n                const outbound = contactToStringOptions.outbound || false;\n                const register = contactToStringOptions.register || false;\n                let contactString = \"<\";\n                // 3.3.  Using a GRUU\n                // Once a user agent obtains GRUUs from the registrar, it uses them in\n                // several ways.  First, it uses them as the contents of the Contact\n                // header field in non-REGISTER requests and responses that it emits\n                // (for example, an INVITE request and 200 OK response).\n                // https://datatracker.ietf.org/doc/html/rfc5627#section-3.3\n                if (anonymous) contactString += this.contact.tempGruu || `sip:anonymous@anonymous.invalid;transport=${contactParams.transport ? contactParams.transport : \"ws\"}`;\n                else if (register) contactString += this.contact.uri;\n                else contactString += this.contact.pubGruu || this.contact.uri;\n                if (outbound) contactString += \";ob\";\n                contactString += \">\";\n                if (this.options.instanceIdAlwaysAdded) contactString += ';+sip.instance=\"<urn:uuid:' + this._instanceId + '>\"';\n                return contactString;\n            }\n        };\n        return contact;\n    }\n    /**\n     * Initialize user agent core.\n     */ initCore() {\n        // supported options\n        let supportedOptionTags = [];\n        supportedOptionTags.push(\"outbound\"); // TODO: is this really supported?\n        if (this.options.sipExtension100rel === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Supported) supportedOptionTags.push(\"100rel\");\n        if (this.options.sipExtensionReplaces === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Supported) supportedOptionTags.push(\"replaces\");\n        if (this.options.sipExtensionExtraSupported) supportedOptionTags.push(...this.options.sipExtensionExtraSupported);\n        if (!this.options.hackAllowUnregisteredOptionTags) supportedOptionTags = supportedOptionTags.filter((optionTag)=>(0, $546aa63f60a92037$export$abeafd9e99196554)[optionTag]);\n        supportedOptionTags = Array.from(new Set(supportedOptionTags)); // array of unique values\n        // FIXME: TODO: This was ported, but this is and was just plain broken.\n        const supportedOptionTagsResponse = supportedOptionTags.slice();\n        if (this.contact.pubGruu || this.contact.tempGruu) supportedOptionTagsResponse.push(\"gruu\");\n        // core configuration\n        const userAgentCoreConfiguration = {\n            aor: this.options.uri,\n            contact: this.contact,\n            displayName: this.options.displayName,\n            loggerFactory: this.loggerFactory,\n            hackViaTcp: this.options.hackViaTcp,\n            routeSet: this.options.preloadedRouteSet,\n            supportedOptionTags: supportedOptionTags,\n            supportedOptionTagsResponse: supportedOptionTagsResponse,\n            sipjsId: this.options.sipjsId,\n            userAgentHeaderFieldValue: this.options.userAgentString,\n            viaForceRport: this.options.forceRport,\n            viaHost: this.options.viaHost,\n            authenticationFactory: ()=>{\n                const username = this.options.authorizationUsername ? this.options.authorizationUsername : this.options.uri.user; // if authorization username not provided, use uri user as username\n                const password = this.options.authorizationPassword ? this.options.authorizationPassword : undefined;\n                const ha1 = this.options.authorizationHa1 ? this.options.authorizationHa1 : undefined;\n                return new (0, $22e94f419ea4370d$export$44fd481568a62fe6)(this.getLoggerFactory(), ha1, username, password);\n            },\n            transportAccessor: ()=>this.transport\n        };\n        const userAgentCoreDelegate = {\n            onInvite: (incomingInviteRequest)=>{\n                var _a;\n                const invitation = new (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89)(this, incomingInviteRequest);\n                incomingInviteRequest.delegate = {\n                    onCancel: (cancel)=>{\n                        invitation._onCancel(cancel);\n                    },\n                    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                    onTransportError: (error)=>{\n                        // A server transaction MUST NOT discard transaction state based only on\n                        // encountering a non-recoverable transport error when sending a\n                        // response.  Instead, the associated INVITE server transaction state\n                        // machine MUST remain in its current state.  (Timers will eventually\n                        // cause it to transition to the \"Terminated\" state).\n                        // https://tools.ietf.org/html/rfc6026#section-7.1\n                        // As noted in the comment above, we are to leaving it to the transaction\n                        // timers to eventually cause the transaction to sort itself out in the case\n                        // of a transport failure in an invite server transaction. This delegate method\n                        // is here simply here for completeness and to make it clear that it provides\n                        // nothing more than informational hook into the core. That is, if you think\n                        // you should be trying to deal with a transport error here, you are likely wrong.\n                        this.logger.error(\"A transport error has occurred while handling an incoming INVITE request.\");\n                    }\n                };\n                // FIXME: Ported - 100 Trying send should be configurable.\n                // Only required if TU will not respond in 200ms.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                incomingInviteRequest.trying();\n                // The Replaces header contains information used to match an existing\n                // SIP dialog (call-id, to-tag, and from-tag).  Upon receiving an INVITE\n                // with a Replaces header, the User Agent (UA) attempts to match this\n                // information with a confirmed or early dialog.\n                // https://tools.ietf.org/html/rfc3891#section-3\n                if (this.options.sipExtensionReplaces !== (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Unsupported) {\n                    const message = incomingInviteRequest.message;\n                    const replaces = message.parseHeader(\"replaces\");\n                    if (replaces) {\n                        const callId = replaces.call_id;\n                        if (typeof callId !== \"string\") throw new Error(\"Type of call id is not string\");\n                        const toTag = replaces.replaces_to_tag;\n                        if (typeof toTag !== \"string\") throw new Error(\"Type of to tag is not string\");\n                        const fromTag = replaces.replaces_from_tag;\n                        if (typeof fromTag !== \"string\") throw new Error(\"type of from tag is not string\");\n                        const targetDialogId = callId + toTag + fromTag;\n                        const targetDialog = this.userAgentCore.dialogs.get(targetDialogId);\n                        // If no match is found, the UAS rejects the INVITE and returns a 481\n                        // Call/Transaction Does Not Exist response.  Likewise, if the Replaces\n                        // header field matches a dialog which was not created with an INVITE,\n                        // the UAS MUST reject the request with a 481 response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog) {\n                            invitation.reject({\n                                statusCode: 481\n                            });\n                            return;\n                        }\n                        // If the Replaces header field matches a confirmed dialog, it checks\n                        // for the presence of the \"early-only\" flag in the Replaces header\n                        // field.  (This flag allows the UAC to prevent a potentially\n                        // undesirable race condition described in Section 7.1.) If the flag is\n                        // present, the UA rejects the request with a 486 Busy response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog.early && replaces.early_only === true) {\n                            invitation.reject({\n                                statusCode: 486\n                            });\n                            return;\n                        }\n                        // Provide a handle on the session being replaced.\n                        const targetSession = this._sessions[callId + fromTag] || this._sessions[callId + toTag] || undefined;\n                        if (!targetSession) throw new Error(\"Session does not exist.\");\n                        invitation._replacee = targetSession;\n                    }\n                }\n                // Delegate invitation handling.\n                if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) {\n                    if (invitation.autoSendAnInitialProvisionalResponse) {\n                        invitation.progress().then(()=>{\n                            var _a;\n                            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) === undefined) throw new Error(\"onInvite undefined.\");\n                            this.delegate.onInvite(invitation);\n                        });\n                        return;\n                    }\n                    this.delegate.onInvite(invitation);\n                    return;\n                }\n                // A common scenario occurs when the callee is currently not willing or\n                // able to take additional calls at this end system.  A 486 (Busy Here)\n                // SHOULD be returned in such a scenario.\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n                invitation.reject({\n                    statusCode: 486\n                });\n            },\n            onMessage: (incomingMessageRequest)=>{\n                if (this.delegate && this.delegate.onMessage) {\n                    const message = new (0, $031801d494727803$export$f69c19e57285b83a)(incomingMessageRequest);\n                    this.delegate.onMessage(message);\n                } else // Accept the MESSAGE request, but do nothing with it.\n                incomingMessageRequest.accept();\n            },\n            onNotify: (incomingNotifyRequest)=>{\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                if (this.delegate && this.delegate.onNotify) {\n                    const notification = new (0, $305e86db02d77018$export$14834abbfce3b8cd)(incomingNotifyRequest);\n                    this.delegate.onNotify(notification);\n                } else // Per the above which obsoletes https://tools.ietf.org/html/rfc3265,\n                // the use of out of dialog NOTIFY is obsolete, but...\n                if (this.options.allowLegacyNotifications) incomingNotifyRequest.accept(); // Accept the NOTIFY request, but do nothing with it.\n                else incomingNotifyRequest.reject({\n                    statusCode: 481\n                });\n            },\n            onRefer: (incomingReferRequest)=>{\n                this.logger.warn(\"Received an out of dialog REFER request\");\n                // TOOD: this.delegate.onRefer(...)\n                if (this.delegate && this.delegate.onReferRequest) this.delegate.onReferRequest(incomingReferRequest);\n                else incomingReferRequest.reject({\n                    statusCode: 405\n                });\n            },\n            onRegister: (incomingRegisterRequest)=>{\n                this.logger.warn(\"Received an out of dialog REGISTER request\");\n                // TOOD: this.delegate.onRegister(...)\n                if (this.delegate && this.delegate.onRegisterRequest) this.delegate.onRegisterRequest(incomingRegisterRequest);\n                else incomingRegisterRequest.reject({\n                    statusCode: 405\n                });\n            },\n            onSubscribe: (incomingSubscribeRequest)=>{\n                this.logger.warn(\"Received an out of dialog SUBSCRIBE request\");\n                // TOOD: this.delegate.onSubscribe(...)\n                if (this.delegate && this.delegate.onSubscribeRequest) this.delegate.onSubscribeRequest(incomingSubscribeRequest);\n                else incomingSubscribeRequest.reject({\n                    statusCode: 405\n                });\n            }\n        };\n        return new (0, $977f1c19544cd05f$export$1f818b2e62a6351e)(userAgentCoreConfiguration, userAgentCoreDelegate);\n    }\n    initTransportCallbacks() {\n        this.transport.onConnect = ()=>this.onTransportConnect();\n        this.transport.onDisconnect = (error)=>this.onTransportDisconnect(error);\n        this.transport.onMessage = (message)=>this.onTransportMessage(message);\n    }\n    onTransportConnect() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return;\n        if (this.delegate && this.delegate.onConnect) this.delegate.onConnect();\n    }\n    onTransportDisconnect(error) {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return;\n        if (this.delegate && this.delegate.onDisconnect) this.delegate.onDisconnect(error);\n        // Only attempt to reconnect if network/server dropped the connection.\n        if (error && this.options.reconnectionAttempts > 0) this.attemptReconnection();\n    }\n    onTransportMessage(messageString) {\n        const message = (0, $fe1227fc15cbdf8c$export$7acfa6ed01010e37).parseMessage(messageString, this.getLogger(\"sip.Parser\"));\n        if (!message) {\n            this.logger.warn(\"Failed to parse incoming message. Dropping.\");\n            return;\n        }\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped && message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n            this.logger.warn(`Received ${message.method} request while stopped. Dropping.`);\n            return;\n        }\n        // A valid SIP request formulated by a UAC MUST, at a minimum, contain\n        // the following header fields: To, From, CSeq, Call-ID, Max-Forwards,\n        // and Via; all of these header fields are mandatory in all SIP\n        // requests.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1\n        const hasMinimumHeaders = ()=>{\n            const mandatoryHeaders = [\n                \"from\",\n                \"to\",\n                \"call_id\",\n                \"cseq\",\n                \"via\"\n            ];\n            for (const header of mandatoryHeaders)if (!message.hasHeader(header)) {\n                this.logger.warn(`Missing mandatory header field : ${header}.`);\n                return false;\n            }\n            return true;\n        };\n        // Request Checks\n        if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Request missing mandatory header field. Dropping.`);\n                return;\n            }\n            // FIXME: This is non-standard and should be a configurable behavior (desirable regardless).\n            // Custom SIP.js check to reject request from ourself (this instance of SIP.js).\n            // This is port of SanityCheck.rfc3261_16_3_4().\n            if (!message.toTag && message.callId.substr(0, 5) === this.options.sipjsId) {\n                this.userAgentCore.replyStateless(message, {\n                    statusCode: 482\n                });\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_request().\n            const len = (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.userAgentCore.replyStateless(message, {\n                    statusCode: 400\n                });\n                return;\n            }\n        }\n        // Response Checks\n        if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Response missing mandatory header field. Dropping.`);\n                return;\n            }\n            // Custom SIP.js check to drop responses if multiple Via headers.\n            // This is port of SanityCheck.rfc3261_8_1_3_3().\n            if (message.getHeaders(\"via\").length > 1) {\n                this.logger.warn(\"More than one Via header field present in the response. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to drop responses if bad Via header.\n            // This is port of SanityCheck.rfc3261_18_1_2().\n            if (message.via.host !== this.options.viaHost || message.via.port !== undefined) {\n                this.logger.warn(\"Via sent-by in the response does not match UA Via host value. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_response().\n            const len = (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.logger.warn(\"Message body length is lower than the value in Content-Length header field. Dropping.\");\n                return;\n            }\n        }\n        // Handle Request\n        if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n            this.userAgentCore.receiveIncomingRequestFromTransport(message);\n            return;\n        }\n        // Handle Response\n        if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) {\n            this.userAgentCore.receiveIncomingResponseFromTransport(message);\n            return;\n        }\n        throw new Error(\"Invalid message type.\");\n    }\n    /**\n     * Transition state.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    transitionState(newState, error) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate state transition\n        switch(this._state){\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started:\n                if (newState !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) invalidTransition();\n                break;\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped:\n                if (newState !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started) invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        this.logger.log(`Transitioned from ${this._state} to ${newState}`);\n        this._state = newState;\n        this._stateEventEmitter.emit(this._state);\n    }\n}\n\n\n\n\n\n\nclass $d5859fd1c29de512$export$415798a788f40554 {\n    /**\n     * Constructs a new instance of the `SessionManager` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SessionManagerOptions} for details.\n     */ constructor(server, options = {}){\n        /** Sessions being managed. */ this.managedSessions = [];\n        this.attemptingReconnection = false;\n        this.optionsPingFailure = false;\n        this.optionsPingRunning = false;\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({\n            aor: \"\",\n            autoStop: true,\n            delegate: {},\n            iceStopWaitingOnServerReflexive: false,\n            managedSessionFactory: (0, $6dd294c5c57173ab$export$9c571c3c8f631dc5)(),\n            maxSimultaneousSessions: 2,\n            media: {},\n            optionsPingInterval: -1,\n            optionsPingRequestURI: \"\",\n            reconnectionAttempts: 3,\n            reconnectionDelay: 4,\n            registrationRetry: false,\n            registrationRetryInterval: 3,\n            registerGuard: null,\n            registererOptions: {},\n            registererRegisterOptions: {},\n            sendDTMFUsingSessionDescriptionHandler: false,\n            userAgentOptions: {}\n        }, $d5859fd1c29de512$export$415798a788f40554.stripUndefinedProperties(options));\n        // UserAgentOptions\n        const userAgentOptions = Object.assign({}, options.userAgentOptions);\n        // Transport\n        if (!userAgentOptions.transportConstructor) userAgentOptions.transportConstructor = (0, $9cf814dc8665aa70$export$86495b081fef8e52);\n        // TransportOptions\n        if (!userAgentOptions.transportOptions) userAgentOptions.transportOptions = {\n            server: server\n        };\n        // URI\n        if (!userAgentOptions.uri) // If an AOR was provided, convert it to a URI\n        {\n            if (options.aor) {\n                const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(options.aor);\n                if (!uri) throw new Error(`Failed to create valid URI from ${options.aor}`);\n                userAgentOptions.uri = uri;\n            }\n        }\n        // UserAgent\n        this.userAgent = new (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf)(userAgentOptions);\n        // UserAgent's delegate\n        this.userAgent.delegate = {\n            // Handle connection with server established\n            onConnect: ()=>{\n                this.logger.log(`Connected`);\n                if (this.delegate && this.delegate.onServerConnect) this.delegate.onServerConnect();\n                // Attempt to register if we are supposed to be registered\n                if (this.shouldBeRegistered) this.register();\n                // Start OPTIONS pings if we are to be pinging\n                if (this.options.optionsPingInterval > 0) this.optionsPingStart();\n            },\n            // Handle connection with server lost\n            onDisconnect: async (error)=>{\n                this.logger.log(`Disconnected`);\n                // Stop OPTIONS ping if need be.\n                let optionsPingFailure = false;\n                if (this.options.optionsPingInterval > 0) {\n                    optionsPingFailure = this.optionsPingFailure;\n                    this.optionsPingFailure = false;\n                    this.optionsPingStop();\n                }\n                // Let delgate know we have disconnected\n                if (this.delegate && this.delegate.onServerDisconnect) this.delegate.onServerDisconnect(error);\n                // If the user called `disconnect` a graceful cleanup will be done therein.\n                // Only cleanup if network/server dropped the connection.\n                // Only reconnect if network/server dropped the connection\n                if (error || optionsPingFailure) {\n                    // There is no transport at this point, so we are not expecting to be able to\n                    // send messages much less get responses. So just dispose of everything without\n                    // waiting for anything to succeed.\n                    if (this.registerer) {\n                        this.logger.log(`Disposing of registerer...`);\n                        this.registerer.dispose().catch((e)=>{\n                            this.logger.debug(`Error occurred disposing of registerer after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                        this.registerer = undefined;\n                    }\n                    this.managedSessions.slice().map((el)=>el.session).forEach(async (session)=>{\n                        this.logger.log(`Disposing of session...`);\n                        session.dispose().catch((e)=>{\n                            this.logger.debug(`Error occurred disposing of a session after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                    });\n                    // Attempt to reconnect if we are supposed to be connected.\n                    if (this.shouldBeConnected) this.attemptReconnection();\n                }\n            },\n            // Handle incoming invitations\n            onInvite: (invitation)=>{\n                this.logger.log(`[${invitation.id}] Received INVITE`);\n                // Guard against a maximum number of pre-existing sessions.\n                // An incoming INVITE request may be received at any time and/or while in the process\n                // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n                const maxSessions = this.options.maxSimultaneousSessions;\n                if (maxSessions !== 0 && this.managedSessions.length > maxSessions) {\n                    this.logger.warn(`[${invitation.id}] Session already in progress, rejecting INVITE...`);\n                    invitation.reject().then(()=>{\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    }).catch((error)=>{\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                    return;\n                }\n                // Use our configured constraints as options for any Inviter created as result of a REFER\n                const referralInviterOptions = {\n                    sessionDescriptionHandlerOptions: {\n                        constraints: this.constraints\n                    }\n                };\n                // Initialize our session\n                this.initSession(invitation, referralInviterOptions);\n                // Delegate\n                if (this.delegate && this.delegate.onCallReceived) this.delegate.onCallReceived(invitation);\n                else {\n                    this.logger.warn(`[${invitation.id}] No handler available, rejecting INVITE...`);\n                    invitation.reject().then(()=>{\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    }).catch((error)=>{\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                }\n            },\n            // Handle incoming messages\n            onMessage: (message)=>{\n                message.accept().then(()=>{\n                    if (this.delegate && this.delegate.onMessageReceived) this.delegate.onMessageReceived(message);\n                });\n            },\n            // Handle incoming notifications\n            onNotify: (notification)=>{\n                notification.accept().then(()=>{\n                    if (this.delegate && this.delegate.onNotificationReceived) this.delegate.onNotificationReceived(notification);\n                });\n            }\n        };\n        // RegistererOptions\n        this.registererOptions = Object.assign({}, options.registererOptions);\n        // RegistererRegisterOptions\n        this.registererRegisterOptions = Object.assign({}, options.registererRegisterOptions);\n        // Retry registration on failure or rejection.\n        if (this.options.registrationRetry) {\n            // If the register request is rejected, try again...\n            this.registererRegisterOptions.requestDelegate = this.registererRegisterOptions.requestDelegate || {};\n            const existingOnReject = this.registererRegisterOptions.requestDelegate.onReject;\n            this.registererRegisterOptions.requestDelegate.onReject = (response)=>{\n                existingOnReject && existingOnReject(response);\n                // If at first we don't succeed, try try again...\n                this.attemptRegistration();\n            };\n        }\n        // Use the SIP.js logger\n        this.logger = this.userAgent.getLogger(\"sip.SessionManager\");\n        // Monitor network connectivity and attempt reconnection and reregistration when we come online\n        window.addEventListener(\"online\", ()=>{\n            this.logger.log(`Online`);\n            if (this.shouldBeConnected) this.connect();\n        });\n        // NOTE: The autoStop option does not currently work as one likley expects.\n        //       This code is here because the \"autoStop behavior\" and this assoicated\n        //       implemenation has been a recurring request. So instead of removing\n        //       the implementation again (because it doesn't work) and then having\n        //       to explain agian the issue over and over again to those who want it,\n        //       we have included it here to break that cycle. The implementation is\n        //       harmless and serves to provide an explaination for those interested.\n        if (this.options.autoStop) // Standard operation workflow will resume after this callback exits, meaning\n        // that any asynchronous operations are likely not going to be finished, especially\n        // if they are guaranteed to not be executed in the current tick (promises fall\n        // under this category, they will never be resolved synchronously by design).\n        window.addEventListener(\"beforeunload\", async ()=>{\n            this.shouldBeConnected = false;\n            this.shouldBeRegistered = false;\n            if (this.userAgent.state !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) // The stop() method returns a promise which will not resolve before the page unloads.\n            await this.userAgent.stop();\n        });\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */ static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key)=>{\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            object[key] = options[key];\n            return object;\n        }, {});\n    }\n    /**\n     * The local media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */ getLocalMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) return undefined;\n        if (!(sdh instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        return sdh.localMediaStream;\n    }\n    /**\n     * The remote media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */ getRemoteMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) return undefined;\n        if (!(sdh instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        return sdh.remoteMediaStream;\n    }\n    /**\n     * The local audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ getLocalAudioTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"audio\");\n    }\n    /**\n     * The local video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ getLocalVideoTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"video\");\n    }\n    /**\n     * The remote audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ getRemoteAudioTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"audio\");\n    }\n    /**\n     * The remote video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ getRemoteVideoTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"video\");\n    }\n    /**\n     * Connect.\n     * @remarks\n     * If not started, starts the UserAgent connecting the WebSocket Transport.\n     * Otherwise reconnects the UserAgent's WebSocket Transport.\n     * Attempts will be made to reconnect as needed.\n     */ async connect() {\n        this.logger.log(`Connecting UserAgent...`);\n        this.shouldBeConnected = true;\n        if (this.userAgent.state !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started) return this.userAgent.start();\n        return this.userAgent.reconnect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * If not stopped, stops the UserAgent disconnecting the WebSocket Transport.\n     */ async disconnect() {\n        this.logger.log(`Disconnecting UserAgent...`);\n        if (this.userAgent.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return Promise.resolve();\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        this.registerer = undefined;\n        return this.userAgent.stop();\n    }\n    /**\n     * Return true if transport is connected.\n     */ isConnected() {\n        return this.userAgent.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     * Attempts will be made to re-register as needed.\n     */ async register(registererRegisterOptions) {\n        this.logger.log(`Registering UserAgent...`);\n        this.shouldBeRegistered = true;\n        if (registererRegisterOptions !== undefined) this.registererRegisterOptions = Object.assign({}, registererRegisterOptions);\n        if (!this.registerer) {\n            this.registerer = new (0, $1c17056ca0658eec$export$ed326b71f90510a1)(this.userAgent, this.registererOptions);\n            this.registerer.stateChange.addListener((state)=>{\n                switch(state){\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Initial:\n                        break;\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered:\n                        if (this.delegate && this.delegate.onRegistered) this.delegate.onRegistered();\n                        break;\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered:\n                        if (this.delegate && this.delegate.onUnregistered) this.delegate.onUnregistered();\n                        // If we transition to an unregister state, attempt to get back to a registered state.\n                        if (this.shouldBeRegistered) this.attemptRegistration();\n                        break;\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated:\n                        break;\n                    default:\n                        throw new Error(\"Unknown registerer state.\");\n                }\n            });\n        }\n        return this.attemptRegistration(true);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */ async unregister(registererUnregisterOptions) {\n        this.logger.log(`Unregistering UserAgent...`);\n        this.shouldBeRegistered = false;\n        if (!this.registerer) {\n            this.logger.warn(`No registerer to unregister.`);\n            return Promise.resolve();\n        }\n        return this.registerer.unregister(registererUnregisterOptions).then(()=>{\n            return;\n        });\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */ async call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`Beginning Session...`);\n        // Guard against a maximum number of pre-existing sessions.\n        // An incoming INVITE request may be received at any time and/or while in the process\n        // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n        const maxSessions = this.options.maxSimultaneousSessions;\n        if (maxSessions !== 0 && this.managedSessions.length > maxSessions) return Promise.reject(new Error(\"Maximum number of sessions already exists.\"));\n        const target = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(destination);\n        if (!target) return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        // Use our configured constraints as InviterOptions if none provided\n        if (!inviterOptions) inviterOptions = {};\n        if (!inviterOptions.sessionDescriptionHandlerOptions) inviterOptions.sessionDescriptionHandlerOptions = {};\n        if (!inviterOptions.sessionDescriptionHandlerOptions.constraints) inviterOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        // If utilizing early media, add a handler to catch 183 Session Progress\n        // messages and then to play the associated remote media (the early media).\n        if (inviterOptions.earlyMedia) {\n            inviterInviteOptions = inviterInviteOptions || {};\n            inviterInviteOptions.requestDelegate = inviterInviteOptions.requestDelegate || {};\n            const existingOnProgress = inviterInviteOptions.requestDelegate.onProgress;\n            inviterInviteOptions.requestDelegate.onProgress = (response)=>{\n                if (response.message.statusCode === 183) this.setupRemoteMedia(inviter);\n                existingOnProgress && existingOnProgress(response);\n            };\n        }\n        // TODO: Any existing onSessionDescriptionHandler is getting clobbered here.\n        // If we get a server reflexive candidate, stop waiting on ICE gathering to complete.\n        // The candidate is a server reflexive candidate; the ip indicates an intermediary\n        // address assigned by the STUN server to represent the candidate's peer anonymously.\n        if (this.options.iceStopWaitingOnServerReflexive) {\n            inviterOptions.delegate = inviterOptions.delegate || {};\n            inviterOptions.delegate.onSessionDescriptionHandler = (sessionDescriptionHandler)=>{\n                if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session description handler not instance of SessionDescriptionHandler\");\n                sessionDescriptionHandler.peerConnectionDelegate = {\n                    onicecandidate: (event)=>{\n                        var _a;\n                        if (((_a = event.candidate) === null || _a === void 0 ? void 0 : _a.type) === \"srflx\") {\n                            this.logger.log(`[${inviter.id}] Found srflx ICE candidate, stop waiting...`);\n                            // In sip.js > 0.20.1 this cast should be removed as iceGatheringComplete will be public\n                            const sdh = sessionDescriptionHandler;\n                            sdh.iceGatheringComplete();\n                        }\n                    }\n                };\n            };\n        }\n        // Create a new Inviter for the outgoing Session\n        const inviter = new (0, $989df868235ee8e3$export$2215cc52469fcfa0)(this.userAgent, target, inviterOptions);\n        // Send INVITE\n        return this.sendInvite(inviter, inviterOptions, inviterInviteOptions).then(()=>{\n            return inviter;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @param session - Session to hangup.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ async hangup(session) {\n        this.logger.log(`[${session.id}] Hangup...`);\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.terminate(session);\n    }\n    /**\n     * Answer an incoming call.\n     * @param session - Session to answer.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */ async answer(session, invitationAcceptOptions) {\n        this.logger.log(`[${session.id}] Accepting Invitation...`);\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        if (!(session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89))) return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        // Use our configured constraints as InvitationAcceptOptions if none provided\n        if (!invitationAcceptOptions) invitationAcceptOptions = {};\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions) invitationAcceptOptions.sessionDescriptionHandlerOptions = {};\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints) invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        return session.accept(invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @param session - Session to decline.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ async decline(session) {\n        this.logger.log(`[${session.id}] Rejecting Invitation...`);\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        if (!(session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89))) return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        return session.reject();\n    }\n    /**\n     * Hold call\n     * @param session - Session to hold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ async hold(session) {\n        this.logger.log(`[${session.id}] Holding session...`);\n        return this.setHold(session, true);\n    }\n    /**\n     * Unhold call.\n     * @param session - Session to unhold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ async unhold(session) {\n        this.logger.log(`[${session.id}] Unholding session...`);\n        return this.setHold(session, false);\n    }\n    /**\n     * Hold state.\n     * @param session - Session to check.\n     * @remarks\n     * True if session is on hold.\n     */ isHeld(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.held : false;\n    }\n    /**\n     * Mute call.\n     * @param session - Session to mute.\n     * @remarks\n     * Disable sender's media tracks.\n     */ mute(session) {\n        this.logger.log(`[${session.id}] Disabling media tracks...`);\n        this.setMute(session, true);\n    }\n    /**\n     * Unmute call.\n     * @param session - Session to unmute.\n     * @remarks\n     * Enable sender's media tracks.\n     */ unmute(session) {\n        this.logger.log(`[${session.id}] Enabling media tracks...`);\n        this.setMute(session, false);\n    }\n    /**\n     * Mute state.\n     * @param session - Session to check.\n     * @remarks\n     * True if sender's media track is disabled.\n     */ isMuted(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.muted : false;\n    }\n    /**\n     * Send DTMF.\n     * @param session - Session to send on.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */ async sendDTMF(session, tone) {\n        this.logger.log(`[${session.id}] Sending DTMF...`);\n        // Validate tone\n        if (!/^[0-9A-D#*,]$/.exec(tone)) return Promise.reject(new Error(\"Invalid DTMF tone.\"));\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        this.logger.log(`[${session.id}] Sending DTMF tone: ${tone}`);\n        if (this.options.sendDTMFUsingSessionDescriptionHandler) {\n            if (!session.sessionDescriptionHandler) return Promise.reject(new Error(\"Session desciption handler undefined.\"));\n            if (!session.sessionDescriptionHandler.sendDtmf(tone)) return Promise.reject(new Error(\"Failed to send DTMF\"));\n            return Promise.resolve();\n        } else {\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            // The UA MUST populate the \"application/dtmf-relay\" body, as defined\n            // earlier, with the button pressed and the duration it was pressed\n            // for.  Technically, this actually requires the INFO to be generated\n            // when the user *releases* the button, however if the user has still\n            // not released a button after 5 seconds, which is the maximum duration\n            // supported by this mechanism, the UA should generate the INFO at that\n            // time.\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00#section-5.3\n            const dtmf = tone;\n            const duration = 2000;\n            const body = {\n                contentDisposition: \"render\",\n                contentType: \"application/dtmf-relay\",\n                content: \"Signal=\" + dtmf + \"\\r\\nDuration=\" + duration\n            };\n            const requestOptions = {\n                body: body\n            };\n            return session.info({\n                requestOptions: requestOptions\n            }).then(()=>{\n                return;\n            });\n        }\n    }\n    /**\n     * Transfer.\n     * @param session - Session with the transferee to transfer.\n     * @param target - The referral target.\n     * @remarks\n     * If target is a Session this is an attended transfer completion (REFER with Replaces),\n     * otherwise this is a blind transfer (REFER). Attempting an attended transfer\n     * completion on a call that has not been answered will be rejected. To implement\n     * an attended transfer with early completion, hangup the call with the target\n     * and execute a blind transfer to the target.\n     */ async transfer(session, target, options) {\n        this.logger.log(`[${session.id}] Referring session...`);\n        if (target instanceof (0, $eae6918d36f972bb$export$1fb4852a55678982)) return session.refer(target, options).then(()=>{\n            return;\n        });\n        const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(target);\n        if (!uri) return Promise.reject(new Error(`Failed to create a valid URI from \"${target}\"`));\n        return session.refer(uri, options).then(()=>{\n            return;\n        });\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */ async message(destination, message) {\n        this.logger.log(`Sending message...`);\n        const target = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(destination);\n        if (!target) return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        return new (0, $1a5a7fa3a929ac56$export$9631269509c3d1fb)(this.userAgent, target, message).message();\n    }\n    /** Media constraints. */ get constraints() {\n        let constraints = {\n            audio: true,\n            video: false\n        }; // default to audio only calls\n        if (this.options.media.constraints) constraints = Object.assign({}, this.options.media.constraints);\n        return constraints;\n    }\n    /**\n     * Attempt reconnection up to `reconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */ attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (!this.shouldBeConnected) {\n            this.logger.log(`Should not be connected currently`);\n            return; // If intentionally disconnected, don't reconnect.\n        }\n        if (this.attemptingReconnection) this.logger.log(`Reconnection attempt already in progress`);\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Reconnection maximum attempts reached`);\n            return;\n        }\n        if (reconnectionAttempt === 1) this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        else this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying in ${reconnectionDelay} seconds`);\n        this.attemptingReconnection = true;\n        setTimeout(()=>{\n            if (!this.shouldBeConnected) {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - aborted`);\n                this.attemptingReconnection = false;\n                return; // If intentionally disconnected, don't reconnect.\n            }\n            this.userAgent.reconnect().then(()=>{\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n                this.attemptingReconnection = false;\n            }).catch((error)=>{\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.logger.error(error.message);\n                this.attemptingReconnection = false;\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Register to receive calls.\n     * @param withoutDelay - If true attempt immediately, otherwise wait `registrationRetryInterval`.\n     */ attemptRegistration(withoutDelay = false) {\n        this.logger.log(`Registration attempt ${withoutDelay ? \"without delay\" : \"\"}`);\n        if (!this.shouldBeRegistered) {\n            this.logger.log(`Should not be registered currently`);\n            return Promise.resolve();\n        }\n        // It only makes sense to have one attempt in progress at a time.\n        // Perhaps we shall (or should) try once again.\n        if (this.registrationAttemptTimeout !== undefined) {\n            this.logger.log(`Registration attempt already in progress`);\n            return Promise.resolve();\n        }\n        // Helper function to send the register request.\n        const _register = ()=>{\n            // If we do not have a registerer, it is not worth trying to register.\n            if (!this.registerer) {\n                this.logger.log(`Registerer undefined`);\n                return Promise.resolve();\n            }\n            // If the WebSocket transport is not connected, it is not worth trying to register.\n            // Perhpas we shall (or should) try once we are connected.\n            if (!this.isConnected()) {\n                this.logger.log(`User agent not connected`);\n                return Promise.resolve();\n            }\n            // If the UserAgent is stopped, it is not worth trying to register.\n            // Perhaps we shall (or should) try once the UserAgent is running.\n            if (this.userAgent.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) {\n                this.logger.log(`User agent stopped`);\n                return Promise.resolve();\n            }\n            // If no guard defined, we are good to proceed without any further ado.\n            if (!this.options.registerGuard) return this.registerer.register(this.registererRegisterOptions).then(()=>{\n                return;\n            });\n            // Otherwise check to make sure the guard does not want us halt.\n            return this.options.registerGuard().catch((error)=>{\n                this.logger.log(`Register guard rejected will making registration attempt`);\n                throw error;\n            }).then((halt)=>{\n                if (halt || !this.registerer) return Promise.resolve();\n                return this.registerer.register(this.registererRegisterOptions).then(()=>{\n                    return;\n                });\n            });\n        };\n        // Compute an amount of time in seconds to wait before sending another register request.\n        // This is a small attempt to avoid DOS attacking our own backend in the event that a\n        // relatively large number of clients sychonously keep retrying register reqeusts.\n        // This is known to happen when the backend goes down for a period and all clients\n        // are attempting to register again - the backend gets slammed with synced reqeusts.\n        const computeRegistrationTimeout = (lowerBound)=>{\n            const upperBound = lowerBound * 2;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        // Send register request after a delay\n        return new Promise((resolve, reject)=>{\n            this.registrationAttemptTimeout = setTimeout(()=>{\n                _register().then(()=>{\n                    this.registrationAttemptTimeout = undefined;\n                    resolve();\n                }).catch((error)=>{\n                    this.registrationAttemptTimeout = undefined;\n                    if (error instanceof (0, $92ef9568286e94e7$export$83a8f2b4495394c4)) resolve();\n                    else reject(error);\n                });\n            }, withoutDelay ? 0 : computeRegistrationTimeout(this.options.registrationRetryInterval));\n        });\n    }\n    /** Helper function to remove media from html elements. */ cleanupMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session does not exist.\");\n        if (managedSession.mediaLocal) {\n            if (managedSession.mediaLocal.video) {\n                managedSession.mediaLocal.video.srcObject = null;\n                managedSession.mediaLocal.video.pause();\n            }\n        }\n        if (managedSession.mediaRemote) {\n            if (managedSession.mediaRemote.audio) {\n                managedSession.mediaRemote.audio.srcObject = null;\n                managedSession.mediaRemote.audio.pause();\n            }\n            if (managedSession.mediaRemote.video) {\n                managedSession.mediaRemote.video.srcObject = null;\n                managedSession.mediaRemote.video.pause();\n            }\n        }\n    }\n    /** Helper function to enable/disable media tracks. */ enableReceiverTracks(session, enable) {\n        if (!this.sessionExists(session)) throw new Error(\"Session does not exist.\");\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        sessionDescriptionHandler.enableReceiverTracks(enable);\n    }\n    /** Helper function to enable/disable media tracks. */ enableSenderTracks(session, enable) {\n        if (!this.sessionExists(session)) throw new Error(\"Session does not exist.\");\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        sessionDescriptionHandler.enableSenderTracks(enable);\n    }\n    /**\n     * Setup session delegate and state change handler.\n     * @param session - Session to setup.\n     * @param referralInviterOptions - Options for any Inviter created as result of a REFER.\n     */ initSession(session, referralInviterOptions) {\n        // Add the session\n        this.sessionAdd(session);\n        // Call session created callback\n        if (this.delegate && this.delegate.onCallCreated) this.delegate.onCallCreated(session);\n        // Setup session state change handler\n        session.stateChange.addListener((state)=>{\n            this.logger.log(`[${session.id}] Session state changed to ${state}`);\n            switch(state){\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                    this.setupLocalMedia(session);\n                    this.setupRemoteMedia(session);\n                    if (this.delegate && this.delegate.onCallAnswered) this.delegate.onCallAnswered(session);\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                // fall through\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                    // This will already have executed if/when we fall\n                    // through from Terminating and thus the managed\n                    // session may already have been cleaned up.\n                    if (this.sessionExists(session)) {\n                        this.cleanupMedia(session);\n                        this.sessionRemove(session);\n                        if (this.delegate && this.delegate.onCallHangup) this.delegate.onCallHangup(session);\n                    }\n                    break;\n                default:\n                    throw new Error(\"Unknown session state.\");\n            }\n        });\n        // TODO: Any existing onInfo or onRefer delegate gets clobbered here.\n        // Setup delegate\n        session.delegate = session.delegate || {};\n        session.delegate.onInfo = (info)=>{\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            var _a;\n            // FIXME: TODO: We should reject correctly...\n            //\n            // If a UA receives an INFO request associated with an Info Package that\n            // the UA has not indicated willingness to receive, the UA MUST send a\n            // 469 (Bad Info Package) response (see Section 11.6), which contains a\n            // Recv-Info header field with Info Packages for which the UA is willing\n            // to receive INFO requests.\n            // https://tools.ietf.org/html/rfc6086#section-4.2.2\n            // No delegate\n            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === undefined) {\n                info.reject();\n                return;\n            }\n            // Invalid content type\n            const contentType = info.request.getHeader(\"content-type\");\n            if (!contentType || !/^application\\/dtmf-relay/i.exec(contentType)) {\n                info.reject();\n                return;\n            }\n            // Invalid body\n            const body = info.request.body.split(\"\\r\\n\", 2);\n            if (body.length !== 2) {\n                info.reject();\n                return;\n            }\n            // Invalid tone\n            let tone;\n            const toneRegExp = /^(Signal\\s*?=\\s*?)([0-9A-D#*]{1})(\\s)?.*/;\n            if (body[0] !== undefined && toneRegExp.test(body[0])) tone = body[0].replace(toneRegExp, \"$2\");\n            if (!tone) {\n                info.reject();\n                return;\n            }\n            // Invalid duration\n            let duration;\n            const durationRegExp = /^(Duration\\s?=\\s?)([0-9]{1,4})(\\s)?.*/;\n            if (body[1] !== undefined && durationRegExp.test(body[1])) duration = parseInt(body[1].replace(durationRegExp, \"$2\"), 10);\n            if (!duration) {\n                info.reject();\n                return;\n            }\n            info.accept().then(()=>{\n                if (this.delegate && this.delegate.onCallDTMFReceived) {\n                    if (!tone || !duration) throw new Error(\"Tone or duration undefined.\");\n                    this.delegate.onCallDTMFReceived(session, tone, duration);\n                }\n            }).catch((error)=>{\n                this.logger.error(error.message);\n            });\n        };\n        session.delegate.onRefer = (referral)=>{\n            referral.accept().then(()=>this.sendInvite(referral.makeInviter(referralInviterOptions), referralInviterOptions)).catch((error)=>{\n                this.logger.error(error.message);\n            });\n        };\n    }\n    /**\n     * Periodically send OPTIONS pings and disconnect when a ping fails.\n     * @param requestURI - Request URI to target\n     * @param fromURI - From URI\n     * @param toURI - To URI\n     */ optionsPingRun(requestURI, fromURI, toURI) {\n        // Guard against nvalid interval\n        if (this.options.optionsPingInterval < 1) throw new Error(\"Invalid options ping interval.\");\n        // Guard against sending a ping when there is one outstanading\n        if (this.optionsPingRunning) return;\n        this.optionsPingRunning = true;\n        // Setup next ping to run in future\n        this.optionsPingTimeout = setTimeout(()=>{\n            this.optionsPingTimeout = undefined;\n            // If ping succeeds...\n            const onPingSuccess = ()=>{\n                // record success or failure\n                this.optionsPingFailure = false;\n                // if we are still running, queue up the next ping\n                if (this.optionsPingRunning) {\n                    this.optionsPingRunning = false;\n                    this.optionsPingRun(requestURI, fromURI, toURI);\n                }\n            };\n            // If ping fails...\n            const onPingFailure = ()=>{\n                this.logger.error(\"OPTIONS ping failed\");\n                // record success or failure\n                this.optionsPingFailure = true;\n                // stop running\n                this.optionsPingRunning = false;\n                // disconnect the transport\n                this.userAgent.transport.disconnect().catch((error)=>this.logger.error(error));\n            };\n            // Create an OPTIONS request message\n            const core = this.userAgent.userAgentCore;\n            const message = core.makeOutgoingRequestMessage(\"OPTIONS\", requestURI, fromURI, toURI, {});\n            // Send the request message\n            this.optionsPingRequest = core.request(message, {\n                onAccept: ()=>{\n                    this.optionsPingRequest = undefined;\n                    onPingSuccess();\n                },\n                onReject: (response)=>{\n                    this.optionsPingRequest = undefined;\n                    // Ping fails on following responses...\n                    // - 408 Request Timeout (no response was received)\n                    // - 503 Service Unavailable (a transport layer error occured)\n                    if (response.message.statusCode === 408 || response.message.statusCode === 503) onPingFailure();\n                    else onPingSuccess();\n                }\n            });\n        }, this.options.optionsPingInterval * 1000);\n    }\n    /**\n     * Start sending OPTIONS pings.\n     */ optionsPingStart() {\n        this.logger.log(`OPTIONS pings started`);\n        // Create the URIs needed to send OPTIONS pings\n        let requestURI, fromURI, toURI;\n        if (this.options.optionsPingRequestURI) {\n            // Use whatever specific RURI is provided.\n            requestURI = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(this.options.optionsPingRequestURI);\n            if (!requestURI) throw new Error(\"Failed to create Request URI.\");\n            // Use the user agent's contact URI for From and To URIs\n            fromURI = this.userAgent.contact.uri.clone();\n            toURI = this.userAgent.contact.uri.clone();\n        } else if (this.options.aor) {\n            // Otherwise use the AOR provided to target the assocated registrar server.\n            const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(this.options.aor);\n            if (!uri) throw new Error(\"Failed to create URI.\");\n            requestURI = uri.clone();\n            requestURI.user = undefined; // target the registrar server\n            fromURI = uri.clone();\n            toURI = uri.clone();\n        } else {\n            this.logger.error(\"You have enabled sending OPTIONS pings and as such you must provide either a) an AOR to register, or b) an RURI to use for the target of the OPTIONS ping requests. \");\n            return;\n        }\n        // Send the OPTIONS pings\n        this.optionsPingRun(requestURI, fromURI, toURI);\n    }\n    /**\n     * Stop sending OPTIONS pings.\n     */ optionsPingStop() {\n        this.logger.log(`OPTIONS pings stopped`);\n        this.optionsPingRunning = false;\n        this.optionsPingFailure = false;\n        if (this.optionsPingRequest) {\n            this.optionsPingRequest.dispose();\n            this.optionsPingRequest = undefined;\n        }\n        if (this.optionsPingTimeout) {\n            clearTimeout(this.optionsPingTimeout);\n            this.optionsPingTimeout = undefined;\n        }\n    }\n    /** Helper function to init send then send invite. */ async sendInvite(inviter, inviterOptions, inviterInviteOptions) {\n        // Initialize our session\n        this.initSession(inviter, inviterOptions);\n        // Send the INVITE\n        return inviter.invite(inviterInviteOptions).then(()=>{\n            this.logger.log(`[${inviter.id}] Sent INVITE`);\n        });\n    }\n    /** Helper function to add a session to the ones we are managing. */ sessionAdd(session) {\n        const managedSession = this.options.managedSessionFactory(this, session);\n        this.managedSessions.push(managedSession);\n    }\n    /** Helper function to check if the session is one we are managing. */ sessionExists(session) {\n        return this.sessionManaged(session) !== undefined;\n    }\n    /** Helper function to check if the session is one we are managing. */ sessionManaged(session) {\n        return this.managedSessions.find((el)=>el.session.id === session.id);\n    }\n    /** Helper function to remoce a session from the ones we are managing. */ sessionRemove(session) {\n        this.managedSessions = this.managedSessions.filter((el)=>el.session.id !== session.id);\n    }\n    /**\n     * Puts Session on hold.\n     * @param session - The session to set.\n     * @param hold - Hold on if true, off if false.\n     */ async setHold(session, hold) {\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        // Just resolve if we are already in correct state\n        if (this.isHeld(session) === hold) return Promise.resolve();\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        const options = {\n            requestDelegate: {\n                onAccept: ()=>{\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = hold;\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) this.delegate.onCallHold(session, managedSession.held);\n                    }\n                },\n                onReject: ()=>{\n                    this.logger.warn(`[${session.id}] Re-invite request was rejected`);\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = !hold; // this was preemptively set so undo on failure\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) this.delegate.onCallHold(session, managedSession.held);\n                    }\n                }\n            }\n        };\n        // Session properties used to pass options to the SessionDescriptionHandler:\n        //\n        // 1) Session.sessionDescriptionHandlerOptions\n        //    SDH options for the initial INVITE transaction.\n        //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n        //\n        // 2) Session.sessionDescriptionHandlerOptionsReInvite\n        //    SDH options for re-INVITE transactions.\n        //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Session.invite().\n        const sessionDescriptionHandlerOptions = session.sessionDescriptionHandlerOptionsReInvite;\n        sessionDescriptionHandlerOptions.hold = hold;\n        session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n        // Preemptively and optimistically set held state (but do not call delegate).\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session is undefiend.\");\n        managedSession.held = hold;\n        // Send re-INVITE\n        return session.invite(options).then(()=>{\n            // Preemptively enable/disable tracks\n            const managedSession = this.sessionManaged(session);\n            if (managedSession !== undefined) {\n                this.enableReceiverTracks(session, !managedSession.held);\n                this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n            }\n        }).catch((error)=>{\n            managedSession.held = !hold; // was preemptively set so undo on failure\n            if (error instanceof (0, $92ef9568286e94e7$export$83a8f2b4495394c4)) this.logger.error(`[${session.id}] A hold request is already in progress.`);\n            throw error;\n        });\n    }\n    /**\n     * Puts Session on mute.\n     * @param session - The session to mute.\n     * @param mute - Mute on if true, off if false.\n     */ setMute(session, mute) {\n        if (!this.sessionExists(session)) {\n            this.logger.warn(`[${session.id}] A session is required to enabled/disable media tracks`);\n            return;\n        }\n        if (session.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.warn(`[${session.id}] An established session is required to enable/disable media tracks`);\n            return;\n        }\n        const managedSession = this.sessionManaged(session);\n        if (managedSession !== undefined) {\n            managedSession.muted = mute;\n            this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n        }\n    }\n    /** Helper function to attach local media to html elements. */ setupLocalMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session does not exist.\");\n        // Get the local media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaLocal = typeof this.options.media.local === \"function\" ? this.options.media.local(session) : this.options.media.local;\n        managedSession.mediaLocal = mediaLocal;\n        const mediaElement = mediaLocal === null || mediaLocal === void 0 ? void 0 : mediaLocal.video;\n        if (mediaElement) {\n            const localStream = this.getLocalMediaStream(session);\n            if (!localStream) throw new Error(\"Local media stream undefiend.\");\n            mediaElement.srcObject = localStream;\n            mediaElement.volume = 0;\n            mediaElement.play().catch((error)=>{\n                this.logger.error(`[${session.id}] Failed to play local media`);\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /** Helper function to attach remote media to html elements. */ setupRemoteMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session does not exist.\");\n        // Get the remote media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaRemote = typeof this.options.media.remote === \"function\" ? this.options.media.remote(session) : this.options.media.remote;\n        managedSession.mediaRemote = mediaRemote;\n        const mediaElement = (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.video) || (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.audio);\n        if (mediaElement) {\n            const remoteStream = this.getRemoteMediaStream(session);\n            if (!remoteStream) throw new Error(\"Remote media stream undefiend.\");\n            mediaElement.autoplay = true; // Safari hack, because you cannot call .play() from a non user action\n            mediaElement.srcObject = remoteStream;\n            mediaElement.play().catch((error)=>{\n                this.logger.error(`[${session.id}] Failed to play remote media`);\n                this.logger.error(error.message);\n            });\n            remoteStream.onaddtrack = ()=>{\n                this.logger.log(`Remote media onaddtrack`);\n                mediaElement.load(); // Safari hack, as it doesn't work otheriwse\n                mediaElement.play().catch((error)=>{\n                    this.logger.error(`[${session.id}] Failed to play remote media`);\n                    this.logger.error(error.message);\n                });\n            };\n        }\n    }\n    /**\n     * End a session.\n     * @param session - The session to terminate.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when Session is terminated.\n     */ async terminate(session) {\n        this.logger.log(`[${session.id}] Terminating...`);\n        switch(session.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                if (session instanceof (0, $989df868235ee8e3$export$2215cc52469fcfa0)) return session.cancel().then(()=>{\n                    this.logger.log(`[${session.id}] Inviter never sent INVITE (canceled)`);\n                });\n                else if (session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89)) return session.reject().then(()=>{\n                    this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                });\n                else throw new Error(\"Unknown session type.\");\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                if (session instanceof (0, $989df868235ee8e3$export$2215cc52469fcfa0)) return session.cancel().then(()=>{\n                    this.logger.log(`[${session.id}] Inviter canceled (sent CANCEL)`);\n                });\n                else if (session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89)) return session.reject().then(()=>{\n                    this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                });\n                else throw new Error(\"Unknown session type.\");\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return session.bye().then(()=>{\n                    this.logger.log(`[${session.id}] Session ended (sent BYE)`);\n                });\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.log(`[${session.id}] Terminating in state ${session.state}, no action taken`);\n        return Promise.resolve();\n    }\n}\n\n\n$parcel$exportWildcard($a37506df75e7b770$exports, $6dd294c5c57173ab$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $2f3039e766a741e2$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $604c8363074a1f2a$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $90f33367fbfb4ac7$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $6a48556e30a930bb$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $d5859fd1c29de512$exports);\n\n\nvar $4da2de395f5b2f91$exports = {};\n/**\n * A simple SIP user implementation for web browsers.\n * @packageDocumentation\n */ var $eed725d293b8fbd1$exports = {};\n\n$parcel$export($eed725d293b8fbd1$exports, \"SimpleUser\", () => $eed725d293b8fbd1$export$224a245426caf9e7);\n\nclass $eed725d293b8fbd1$export$224a245426caf9e7 {\n    /**\n     * Constructs a new instance of the `SimpleUser` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SimpleUserOptions} for details.\n     */ constructor(server, options = {}){\n        this.session = undefined;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({}, options);\n        // Session manager options\n        const sessionManagerOptions = {\n            aor: this.options.aor,\n            delegate: {\n                onCallAnswered: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallAnswered) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onCallCreated: (session)=>{\n                    var _a, _b;\n                    this.session = session;\n                    (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallCreated) === null || _b === void 0 || _b.call(_a);\n                },\n                onCallReceived: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallReceived) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onCallHangup: ()=>{\n                    var _a, _b;\n                    this.session = undefined;\n                    ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHangup) && ((_b = this.delegate) === null || _b === void 0 || _b.onCallHangup());\n                },\n                onCallHold: (s, held)=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHold) === null || _b === void 0 ? void 0 : _b.call(_a, held);\n                },\n                onCallDTMFReceived: (s, tone, dur)=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === null || _b === void 0 ? void 0 : _b.call(_a, tone, dur);\n                },\n                onMessageReceived: (message)=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onMessageReceived) === null || _b === void 0 ? void 0 : _b.call(_a, message.request.body);\n                },\n                onRegistered: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onRegistered) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onUnregistered: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onUnregistered) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onServerConnect: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerConnect) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onServerDisconnect: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerDisconnect) === null || _b === void 0 ? void 0 : _b.call(_a);\n                }\n            },\n            maxSimultaneousSessions: 1,\n            media: this.options.media,\n            reconnectionAttempts: this.options.reconnectionAttempts,\n            reconnectionDelay: this.options.reconnectionDelay,\n            registererOptions: this.options.registererOptions,\n            sendDTMFUsingSessionDescriptionHandler: this.options.sendDTMFUsingSessionDescriptionHandler,\n            userAgentOptions: this.options.userAgentOptions\n        };\n        this.sessionManager = new (0, $d5859fd1c29de512$export$415798a788f40554)(server, sessionManagerOptions);\n        // Use the SIP.js logger\n        this.logger = this.sessionManager.userAgent.getLogger(\"sip.SimpleUser\");\n    }\n    /**\n     * Instance identifier.\n     * @internal\n     */ get id() {\n        return this.options.userAgentOptions && this.options.userAgentOptions.displayName || \"Anonymous\";\n    }\n    /** The local media stream. Undefined if call not answered. */ get localMediaStream() {\n        return this.session && this.sessionManager.getLocalMediaStream(this.session);\n    }\n    /** The remote media stream. Undefined if call not answered. */ get remoteMediaStream() {\n        return this.session && this.sessionManager.getRemoteMediaStream(this.session);\n    }\n    /**\n     * The local audio track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ get localAudioTrack() {\n        return this.session && this.sessionManager.getLocalAudioTrack(this.session);\n    }\n    /**\n     * The local video track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ get localVideoTrack() {\n        return this.session && this.sessionManager.getLocalVideoTrack(this.session);\n    }\n    /**\n     * The remote audio track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ get remoteAudioTrack() {\n        return this.session && this.sessionManager.getRemoteAudioTrack(this.session);\n    }\n    /**\n     * The remote video track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ get remoteVideoTrack() {\n        return this.session && this.sessionManager.getRemoteVideoTrack(this.session);\n    }\n    /**\n     * Connect.\n     * @remarks\n     * Start the UserAgent's WebSocket Transport.\n     */ connect() {\n        this.logger.log(`[${this.id}] Connecting UserAgent...`);\n        return this.sessionManager.connect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * Stop the UserAgent's WebSocket Transport.\n     */ disconnect() {\n        this.logger.log(`[${this.id}] Disconnecting UserAgent...`);\n        return this.sessionManager.disconnect();\n    }\n    /**\n     * Return true if connected.\n     */ isConnected() {\n        return this.sessionManager.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     */ register(registererRegisterOptions) {\n        this.logger.log(`[${this.id}] Registering UserAgent...`);\n        return this.sessionManager.register(registererRegisterOptions);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */ unregister(registererUnregisterOptions) {\n        this.logger.log(`[${this.id}] Unregistering UserAgent...`);\n        return this.sessionManager.unregister(registererUnregisterOptions);\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */ call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`[${this.id}] Beginning Session...`);\n        if (this.session) return Promise.reject(new Error(\"Session already exists.\"));\n        return this.sessionManager.call(destination, inviterOptions, inviterInviteOptions).then(()=>{\n            return;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ hangup() {\n        this.logger.log(`[${this.id}] Hangup...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.hangup(this.session).then(()=>{\n            this.session = undefined;\n        });\n    }\n    /**\n     * Answer an incoming call.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */ answer(invitationAcceptOptions) {\n        this.logger.log(`[${this.id}] Accepting Invitation...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.answer(this.session, invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ decline() {\n        this.logger.log(`[${this.id}] rejecting Invitation...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.decline(this.session);\n    }\n    /**\n     * Hold call\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ hold() {\n        this.logger.log(`[${this.id}] holding session...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.hold(this.session);\n    }\n    /**\n     * Unhold call.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ unhold() {\n        this.logger.log(`[${this.id}] unholding session...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.unhold(this.session);\n    }\n    /**\n     * Hold state.\n     * @remarks\n     * True if session is on hold.\n     */ isHeld() {\n        return this.session ? this.sessionManager.isHeld(this.session) : false;\n    }\n    /**\n     * Mute call.\n     * @remarks\n     * Disable sender's media tracks.\n     */ mute() {\n        this.logger.log(`[${this.id}] disabling media tracks...`);\n        return this.session && this.sessionManager.mute(this.session);\n    }\n    /**\n     * Unmute call.\n     * @remarks\n     * Enable sender's media tracks.\n     */ unmute() {\n        this.logger.log(`[${this.id}] enabling media tracks...`);\n        return this.session && this.sessionManager.unmute(this.session);\n    }\n    /**\n     * Mute state.\n     * @remarks\n     * True if sender's media track is disabled.\n     */ isMuted() {\n        return this.session ? this.sessionManager.isMuted(this.session) : false;\n    }\n    /**\n     * Send DTMF.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */ sendDTMF(tone) {\n        this.logger.log(`[${this.id}] sending DTMF...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.sendDTMF(this.session, tone);\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */ message(destination, message) {\n        this.logger.log(`[${this.id}] sending message...`);\n        return this.sessionManager.message(destination, message);\n    }\n}\n\n\nvar $13c2bc08c5d1f259$exports = {};\n\n\nvar $161f11ab5f4c47f2$exports = {};\n\n\n$parcel$exportWildcard($4da2de395f5b2f91$exports, $eed725d293b8fbd1$exports);\n$parcel$exportWildcard($4da2de395f5b2f91$exports, $13c2bc08c5d1f259$exports);\n$parcel$exportWildcard($4da2de395f5b2f91$exports, $161f11ab5f4c47f2$exports);\n\n\nvar $59b1bbf7f3145b7c$exports = {};\n/**\n * A Transport implementation for web browsers.\n * @packageDocumentation\n */ \nvar $9bf80e44dacc954e$exports = {};\n\n\n$parcel$exportWildcard($59b1bbf7f3145b7c$exports, $9cf814dc8665aa70$exports);\n$parcel$exportWildcard($59b1bbf7f3145b7c$exports, $9bf80e44dacc954e$exports);\n\n\n$parcel$exportWildcard($71514f66503c648c$exports, $afd7e7a9fe59c60f$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $b6727c6f0668df8e$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $a37506df75e7b770$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $4da2de395f5b2f91$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $59b1bbf7f3145b7c$exports);\n\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\nconst $e469250112f23c01$export$ada873a34909da65 = {\n    Transport: {\n        Connecting: \"connecting\",\n        Connected: \"connected\",\n        Disconnecting: \"disconnecting\",\n        Disconnected: \"disconnected\",\n        ConnectionAttemptFailure: \"wsConnectionError\",\n        ConnectionFailure: \"transportError\",\n        SwitchBackToMainProxy: \"switchBackProxy\",\n        Closed: \"closed\"\n    },\n    UserAgent: {\n        Registered: \"registered\",\n        Unregistered: \"unregistered\",\n        RegistrationFailed: \"registrationFailed\",\n        InviteSent: \"inviteSent\",\n        Invite: \"invite\",\n        ProvisionUpdate: \"provisionUpdate\",\n        Started: \"started\",\n        Stopped: \"stopped\"\n    },\n    Session: {\n        Accepted: \"accepted\",\n        Progress: \"progress\",\n        Muted: \"muted\",\n        Unmuted: \"unmuted\",\n        Establishing: \"establishing\",\n        Established: \"established\",\n        Terminating: \"terminating\",\n        Terminated: \"terminated\",\n        UpdateReceived: \"updateReceived\",\n        MoveToRcv: \"moveToRcv\",\n        QOSPublished: \"qos-published\",\n        RTPStat: \"rtpStat\",\n        UserMediaFailed: \"userMediaFailed\"\n    }\n};\n\n\nfunction $69d2e7242b6c53d5$export$483c730d9fd36349(transport, options) {\n    transport.reconnectionAttempts = 0;\n    transport.sipErrorCodes = options.sipErrorCodes;\n    transport.servers = options.transportServers;\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    transport.on = eventEmitter.on.bind(eventEmitter);\n    transport.off = eventEmitter.off.bind(eventEmitter);\n    transport.once = eventEmitter.once.bind(eventEmitter);\n    transport.addListener = eventEmitter.addListener.bind(eventEmitter);\n    transport.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    transport.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n    transport.emit = eventEmitter.emit.bind(eventEmitter);\n    transport.mainProxy = options.transportServers[0];\n    transport.switchBackInterval = options.switchBackInterval;\n    transport.reconnectionTimeout = options.reconnectionTimeout;\n    transport.maxReconnectionAttempts = options.maxReconnectionAttempts;\n    transport.__afterWSConnected = $69d2e7242b6c53d5$var$__afterWSConnected.bind(transport);\n    transport.__clearSwitchBackToMainProxyTimer = $69d2e7242b6c53d5$var$__clearSwitchBackToMainProxyTimer.bind(transport);\n    transport.__computeRandomTimeout = $69d2e7242b6c53d5$var$__computeRandomTimeout.bind(transport);\n    transport.__connect = transport.connect;\n    transport.__isCurrentMainProxy = $69d2e7242b6c53d5$var$__isCurrentMainProxy.bind(transport);\n    transport.__onConnectedToBackup = $69d2e7242b6c53d5$var$__onConnectedToBackup.bind(transport);\n    transport.__onConnectedToMain = $69d2e7242b6c53d5$var$__onConnectedToMain.bind(transport);\n    transport.__resetServersErrorStatus = $69d2e7242b6c53d5$var$__resetServersErrorStatus.bind(transport);\n    transport.__scheduleSwitchBackToMainProxy = $69d2e7242b6c53d5$var$__scheduleSwitchBackToMainProxy.bind(transport);\n    transport.__setServerIsError = $69d2e7242b6c53d5$var$__setServerIsError.bind(transport);\n    transport.connect = $69d2e7242b6c53d5$var$__connect.bind(transport);\n    transport.getNextWsServer = $69d2e7242b6c53d5$var$getNextWsServer.bind(transport);\n    transport.isSipErrorCode = $69d2e7242b6c53d5$var$isSipErrorCode.bind(transport);\n    transport.noAvailableServers = $69d2e7242b6c53d5$var$noAvailableServers.bind(transport);\n    transport.onSipErrorCode = $69d2e7242b6c53d5$var$onSipErrorCode.bind(transport);\n    transport.reconnect = $69d2e7242b6c53d5$var$reconnect.bind(transport);\n    transport.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Connecting);\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Connected);\n                transport.__afterWSConnected();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Disconnecting);\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Disconnected);\n                break;\n        }\n    });\n    return transport;\n}\nfunction $69d2e7242b6c53d5$var$__connect() {\n    return this.__connect().catch(async (e)=>{\n        this.logger.error(`unable to establish connection to server ${this.server} - ${e.message}`);\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.ConnectionAttemptFailure, e); // Can we move to onTransportDisconnect?\n        await this.reconnect();\n    });\n}\nfunction $69d2e7242b6c53d5$var$__computeRandomTimeout(reconnectionAttempts = 1, randomMinInterval = 0, randomMaxInterval = 0) {\n    if (randomMinInterval < 0 || randomMaxInterval < 0 || reconnectionAttempts < 1) throw new Error(\"Arguments must be positive numbers\");\n    const randomInterval = Math.floor(Math.random() * Math.abs(randomMaxInterval - randomMinInterval)) + randomMinInterval;\n    const retryOffset = (reconnectionAttempts - 1) * (randomMinInterval + randomMaxInterval) / 2;\n    return randomInterval + retryOffset;\n}\nfunction $69d2e7242b6c53d5$var$__setServerIsError(uri) {\n    this.servers.forEach((server)=>{\n        if (server.uri === uri && !server.isError) server.isError = true;\n    });\n}\nfunction $69d2e7242b6c53d5$var$__resetServersErrorStatus() {\n    this.servers.forEach((server)=>{\n        server.isError = false;\n    });\n}\nfunction $69d2e7242b6c53d5$var$__isCurrentMainProxy() {\n    return this.server === this.servers[0].uri;\n}\nfunction $69d2e7242b6c53d5$var$__afterWSConnected() {\n    this.__isCurrentMainProxy() ? this.__onConnectedToMain() : this.__onConnectedToBackup();\n}\nfunction $69d2e7242b6c53d5$var$__onConnectedToMain() {\n    this.__clearSwitchBackToMainProxyTimer();\n}\nfunction $69d2e7242b6c53d5$var$__onConnectedToBackup() {\n    if (!this.switchBackToMainProxyTimer) this.__scheduleSwitchBackToMainProxy();\n}\nfunction $69d2e7242b6c53d5$var$__scheduleSwitchBackToMainProxy() {\n    const randomInterval = 900000; // 15 min\n    let switchBackInterval = this.switchBackInterval ? this.switchBackInterval * 1000 : null;\n    // Add random time to expand clients connections in time;\n    if (switchBackInterval) {\n        switchBackInterval += this.__computeRandomTimeout(1, 0, randomInterval);\n        this.logger.warn(\"Try to switch back to main proxy after \" + Math.round(switchBackInterval / 1000 / 60) + \" min\");\n        this.switchBackToMainProxyTimer = setTimeout(()=>{\n            this.switchBackToMainProxyTimer = null;\n            this.logger.warn(\"switchBack initiated\");\n            this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.SwitchBackToMainProxy);\n        // FIXME: Why is force reconnect not called here and the client is made to do that?\n        }, switchBackInterval);\n    } else this.logger.warn(\"switchBackInterval is not set. Will be switched with next provision update \");\n}\nfunction $69d2e7242b6c53d5$var$__clearSwitchBackToMainProxyTimer() {\n    if (this.switchBackToMainProxyTimer) {\n        clearTimeout(this.switchBackToMainProxyTimer);\n        this.switchBackToMainProxyTimer = null;\n    }\n}\nasync function $69d2e7242b6c53d5$var$reconnect(forceReconnectToMain) {\n    if (this.reconnectionAttempts > 0) this.logger.warn(`Reconnection attempt ${this.reconnectionAttempts} failed`);\n    if (this.reconnectTimer) {\n        this.logger.warn(\"already trying to reconnect\");\n        return;\n    }\n    if (forceReconnectToMain) {\n        this.logger.warn(\"forcing connect to main WS server\");\n        await this.disconnect();\n        this.server = this.getNextWsServer(true).uri;\n        this.reconnectionAttempts = 0;\n        await this.connect();\n        return;\n    }\n    if (this.isConnected()) {\n        this.logger.warn(\"attempted to reconnect while connected - forcing disconnect\");\n        await this.disconnect();\n        await this.reconnect();\n        return;\n    }\n    if (this.noAvailableServers()) {\n        this.logger.warn(\"no available WebSocket servers left\");\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Closed);\n        this.__resetServersErrorStatus();\n        this.server = this.getNextWsServer(true).uri;\n        this.__clearSwitchBackToMainProxyTimer();\n        return;\n    }\n    this.reconnectionAttempts += 1;\n    if (this.reconnectionAttempts > this.maxReconnectionAttempts) {\n        this.logger.warn(`maximum reconnection attempts for WebSocket ${this.server}`);\n        this.logger.warn(`transport ${this.server} failed`);\n        this.__setServerIsError(this.server);\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.ConnectionFailure);\n        const nextServer = this.getNextWsServer();\n        if (!nextServer) {\n            // No more servers available to try connecting to\n            this.logger.error(\"unable to connect to any transport\");\n            return;\n        }\n        this.configuration.server = nextServer.uri;\n        this.reconnectionAttempts = 0;\n        await this.connect();\n    } else {\n        const randomMinInterval = (this.reconnectionTimeout - 2) * 1000;\n        const randomMaxInterval = (this.reconnectionTimeout + 2) * 1000;\n        this.nextReconnectInterval = this.__computeRandomTimeout(this.reconnectionAttempts, randomMinInterval, randomMaxInterval);\n        this.logger.warn(`trying to reconnect to WebSocket ${this.server} (reconnection attempt: ${this.reconnectionAttempts})`);\n        this.reconnectTimer = setTimeout(()=>{\n            this.reconnectTimer = undefined;\n            this.connect().then(()=>{\n                this.reconnectionAttempts = 0;\n            });\n        }, this.nextReconnectInterval);\n        this.logger.warn(`next reconnection attempt in: ${Math.round(this.nextReconnectInterval / 1000)} seconds.`);\n    }\n}\nfunction $69d2e7242b6c53d5$var$getNextWsServer(force = false) {\n    // Adding the force check because otherwise it will not bypass error check\n    if (!force && this.noAvailableServers()) {\n        this.logger.warn(\"attempted to get next ws server but there are no available ws servers left\");\n        return;\n    }\n    const candidates = force ? this.servers : this.servers.filter(({ isError: isError })=>!isError);\n    return candidates[0];\n}\nfunction $69d2e7242b6c53d5$var$noAvailableServers() {\n    return this.servers.every(({ isError: isError })=>isError);\n}\nfunction $69d2e7242b6c53d5$var$isSipErrorCode(statusCode) {\n    if (!statusCode) return false;\n    if (!this.sipErrorCodes) return false;\n    return this.sipErrorCodes.indexOf(statusCode.toString()) !== -1;\n}\nasync function $69d2e7242b6c53d5$var$onSipErrorCode() {\n    this.logger.warn(\"Error received from the server. Disconnecting from the proxy\");\n    this.__setServerIsError(this.server);\n    this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.ConnectionFailure);\n    this.reconnectionAttempts = 0;\n    return this.reconnect();\n}\n\n\nclass $d7cdbcd3a3602964$export$d828144089ea9387 {\n    /** Current volume */ volume;\n    _enabled;\n    _incoming;\n    _outgoing;\n    _audio;\n    constructor(options = {}){\n        this._enabled = !!options.enabled;\n        this.loadAudio(options);\n    }\n    /** Load incoming and outgoing audio files for feedback */ loadAudio(options) {\n        this._incoming = options.incoming;\n        this._outgoing = options.outgoing;\n        this._audio = {};\n    }\n    /** Set volume for incoming and outgoing feedback */ setVolume(_volume) {\n        let volume = _volume;\n        if (volume < 0) volume = 0;\n        if (volume > 1) volume = 1;\n        this.volume = volume;\n        for(const url in this._audio)if (Object.hasOwn(this._audio, url)) this._audio[url].volume = volume;\n    }\n    /**\n   * Play or pause incoming feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */ playIncoming(value) {\n        return this._playSound(this._incoming, value, this.volume ?? 0.5);\n    }\n    /**\n   * Play or pause outgoing feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */ playOutgoing(value) {\n        return this._playSound(this._outgoing, value, this.volume ?? 1);\n    }\n    _playSound(url, val, volume) {\n        if (!this._enabled || !url || !this._audio) return this;\n        if (!this._audio[url]) {\n            if (val) {\n                this._audio[url] = new Audio();\n                this._audio[url].src = url;\n                this._audio[url].loop = true;\n                this._audio[url].volume = volume;\n                this._audio[url].playPromise = this._audio[url].play();\n            }\n        } else if (val) {\n            this._audio[url].currentTime = 0;\n            this._audio[url].playPromise = this._audio[url].play();\n        } else {\n            const audio = this._audio[url];\n            if (audio.playPromise !== undefined) audio.playPromise.then(()=>{\n                audio.pause();\n            });\n        }\n        return this;\n    }\n}\n\n\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\n\n\nconst $df5bef30413a053b$export$31b40729666a4ae0 = ()=>\"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, (c)=>{\n        const r = Math.random() * 16 | 0;\n        const v = c === \"x\" ? r : r & 0x3 | 0x8;\n        return v.toString(16);\n    });\nconst $df5bef30413a053b$export$8b58be045bf06082 = (dst = {}, src = {})=>Object.assign(dst || {}, src || {});\n\n\nconst $9ecda7333d28e490$export$defe85febe8b728c = {\n    park: {\n        reqid: 1,\n        command: \"callpark\"\n    },\n    startRecord: {\n        reqid: 2,\n        command: \"startcallrecord\"\n    },\n    stopRecord: {\n        reqid: 3,\n        command: \"stopcallrecord\"\n    },\n    flip: {\n        reqid: 3,\n        command: \"callflip\",\n        target: \"\"\n    },\n    monitor: {\n        reqid: 4,\n        command: \"monitor\"\n    },\n    barge: {\n        reqid: 5,\n        command: \"barge\"\n    },\n    whisper: {\n        reqid: 6,\n        command: \"whisper\"\n    },\n    takeover: {\n        reqid: 7,\n        command: \"takeover\"\n    },\n    toVoicemail: {\n        reqid: 11,\n        command: \"toVoicemail\"\n    },\n    ignore: {\n        reqid: 12,\n        command: \"ignore\"\n    },\n    receiveConfirm: {\n        reqid: 17,\n        command: \"receiveConfirm\"\n    },\n    replyWithMessage: {\n        reqid: 14,\n        command: \"replyWithMessage\"\n    }\n};\nconst $9ecda7333d28e490$export$1a2a4672f2aa1318 = \"rc-webPhone-uuid\";\nconst $9ecda7333d28e490$export$2cd411766cb0f9c = 60000;\nconst $9ecda7333d28e490$export$5ba7149a85c7d1a0 = {\n    audio: true,\n    video: false\n};\nconst $9ecda7333d28e490$export$40da5b911536ffbf = [\n    \"stun.l.google.com:19302\"\n];\nconst $9ecda7333d28e490$export$483a720d1bace4cd = [\n    \"408\",\n    \"502\",\n    \"503\",\n    \"504\"\n];\nconst $9ecda7333d28e490$export$731d8a9cb69e4934 = \"debug\";\n\n\n/*\n * @Author: Elias Sun(elias.sun@ringcentral.com)\n * @Date: Dec. 15, 2018\n * Copyright © RingCentral. All rights reserved.\n */ \nvar $557a2ee3af030028$var$ConnectionState;\n(function(ConnectionState) {\n    ConnectionState[\"new\"] = \"mediaConnectionStateNew\";\n    ConnectionState[\"checking\"] = \"mediaConnectionStateChecking\";\n    ConnectionState[\"connected\"] = \"mediaConnectionStateConnected\";\n    ConnectionState[\"completed\"] = \"mediaConnectionStateCompleted\";\n    ConnectionState[\"failed\"] = \"mediaConnectionStateFailed\";\n    ConnectionState[\"disconnected\"] = \"mediaConnectionStateDisconnected\";\n    ConnectionState[\"closed\"] = \"mediaConnectionStateClosed\";\n})($557a2ee3af030028$var$ConnectionState || ($557a2ee3af030028$var$ConnectionState = {}));\nvar $557a2ee3af030028$export$c4be745dbdec8b4;\n(function(Browsers) {\n    Browsers[\"MSIE\"] = \"IE\";\n    Browsers[\"Chrome\"] = \"Chrome\";\n    Browsers[\"Firefox\"] = \"Firefox\";\n    Browsers[\"Safari\"] = \"Safari\";\n    Browsers[\"Opera\"] = \"Opera\";\n})($557a2ee3af030028$export$c4be745dbdec8b4 || ($557a2ee3af030028$export$c4be745dbdec8b4 = {}));\nclass $557a2ee3af030028$export$d2e4c86c27c7559f {\n    outboundRtpReport = {};\n    inboundRtpReport = {};\n    rttMs = {};\n    localCandidates = [];\n    remoteCandidates = [];\n    transport = {};\n}\nclass $557a2ee3af030028$export$2e2bcd8739ae039 {\n    /**\n   * Reference to MediaStreamsImpl object. This Object has all the functions to handle media streams\n   *\n   * MediaStreams class is a wrapper around MediaStreamsImpl\n   */ mediaStreamsImpl;\n    /** Remove iceconnectionstatechange event listeners and stop collecting stats */ release;\n    /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */ reconnectMedia;\n    /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */ getMediaStats;\n    /** Stop collecting stats */ stopMediaStats;\n    constructor(session){\n        this.mediaStreamsImpl = new $557a2ee3af030028$export$2f9419ea90201913(session);\n        this.release = this.mediaStreamsImpl.release.bind(this.mediaStreamsImpl);\n        this.reconnectMedia = this.mediaStreamsImpl.reconnectMedia.bind(this.mediaStreamsImpl);\n        this.getMediaStats = this.mediaStreamsImpl.getMediaStats.bind(this.mediaStreamsImpl);\n        this.stopMediaStats = this.mediaStreamsImpl.stopMediaStats.bind(this.mediaStreamsImpl);\n    }\n    /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */ set onRTPStat(callback) {\n        this.mediaStreamsImpl.onRTPStat = callback;\n    }\n    get onRTPStat() {\n        return this.mediaStreamsImpl.onRTPStat;\n    }\n    /**\n   * Set a function to be called when `peerConnetion` iceconnectionstatechange changes\n   * @param callback function to be called when `peerConnetion` iceconnectionstatechange changes\n   */ set onMediaConnectionStateChange(callback) {\n        this.mediaStreamsImpl.onMediaConnectionStateChange = callback;\n    }\n    get onMediaConnectionStateChange() {\n        return this.mediaStreamsImpl.onMediaConnectionStateChange;\n    }\n}\nclass $557a2ee3af030028$export$2f9419ea90201913 {\n    preRTT;\n    /**\n   * Set a function to be called when `peerConnection` iceconnectionstatechange changes\n   *\n   * @param callback function to be called when `peerConnection` iceconnectionstatechange changes\n   */ onMediaConnectionStateChange;\n    /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */ onRTPStat;\n    ktag = \"MediaStreams\";\n    session;\n    isChrome;\n    isFirefox;\n    isSafari;\n    mediaStatsTimer;\n    constructor(session){\n        this.ktag = \"MediaStreams\";\n        if (!session) throw new Error(`${this.ktag}: Cannot initial media stream monitoring. Session is not passed`);\n        this.session = session;\n        this.onMediaConnectionStateChange = undefined;\n        this.onPeerConnectionStateChange = this.onPeerConnectionStateChange.bind(this);\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        sessionDescriptionHandler.peerConnection.addEventListener(\"iceconnectionstatechange\", this.onPeerConnectionStateChange);\n        this.isChrome = this.browser() === \"Chrome\";\n        this.isFirefox = this.browser() === \"Firefox\";\n        this.isSafari = this.browser() === \"Safari\";\n        this.preRTT = {\n            currentRoundTripTime: 0\n        };\n        if (!this.isChrome && !this.isFirefox && !this.isSafari) this.session.logger.error(`${this.ktag} The web browser ${this.browser()} is not in the recommended list [Chrome, Safari, Firefox] !`);\n    }\n    /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */ getMediaStats(callback, interval = 1000) {\n        if (!this.onRTPStat && !callback) {\n            this.session.logger.debug(`${this.ktag}: No event callback provided to call when media starts are generated`);\n            return;\n        }\n        if (callback) this.onRTPStat = callback;\n        if (this.mediaStatsTimer) {\n            clearTimeout(this.mediaStatsTimer);\n            this.mediaStatsTimer = null;\n        }\n        this.mediaStatsTimer = setInterval(()=>{\n            this.mediaStatsTimerCallback();\n        }, interval);\n    }\n    /**\n   * Stop collecting stats. This will stop calling the registered function (either that was registered using `onRTPstat` or using `getMediaStats`)\n   */ stopMediaStats() {\n        if (this.mediaStatsTimer) {\n            clearTimeout(this.mediaStatsTimer);\n            this.onRTPStat = undefined;\n        }\n    }\n    /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */ reconnectMedia() {\n        return new Promise((resolve, reject)=>{\n            this.session.reinvite().then(()=>resolve()).catch(reject);\n        });\n    }\n    /**\n   * Remove iceconnectionstatechange event listeners and stop collecting stats\n   */ release() {\n        if (this.mediaStatsTimer) {\n            clearTimeout(this.mediaStatsTimer);\n            this.mediaStatsTimer = null;\n        }\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        if (!sessionDescriptionHandler.peerConnection) return;\n        sessionDescriptionHandler.peerConnection.removeEventListener(\"iceconnectionstatechange\", this.onPeerConnectionStateChange);\n    }\n    get tag() {\n        return this.ktag;\n    }\n    /**\n   * Function to find what browser is being used depending on the `navigator.userAgent` value\n   * @returns Browsers enum value to denote what browser if being used\n   */ browser() {\n        if (navigator.userAgent.search(\"MSIE\") >= 0) return \"IE\";\n        else if (navigator.userAgent.search(\"Chrome\") >= 0) return \"Chrome\";\n        else if (navigator.userAgent.search(\"Firefox\") >= 0) return \"Firefox\";\n        else if (navigator.userAgent.search(\"Safari\") >= 0 && navigator.userAgent.search(\"Chrome\") < 0) return \"Safari\";\n        else if (navigator.userAgent.search(\"Opera\") >= 0) return \"Opera\";\n        return \"unknown\";\n    }\n    mediaStatsTimerCallback() {\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        const peerConnection = sessionDescriptionHandler.peerConnection;\n        if (!peerConnection) {\n            this.session.logger.error(`${this.ktag}: The peer connection cannot be null`);\n            return;\n        }\n        const connectionState = peerConnection.iceConnectionState;\n        if (connectionState !== \"connected\" && connectionState !== \"completed\") {\n            this.preRTT.currentRoundTripTime = 0;\n            return;\n        }\n        this.getRTPReport(new $557a2ee3af030028$export$d2e4c86c27c7559f());\n    }\n    onPeerConnectionStateChange() {\n        let eventName = \"unknown\";\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        const state = sessionDescriptionHandler.peerConnection.iceConnectionState;\n        if (Object.hasOwn($557a2ee3af030028$var$ConnectionState, state)) {\n            eventName = $557a2ee3af030028$var$ConnectionState[state];\n            if (this.onMediaConnectionStateChange) this.onMediaConnectionStateChange(eventName, this.session);\n            this.session.emit(eventName);\n        } else this.session.logger.debug(`${this.tag}: Unknown peerConnection state: ${state}`);\n        this.session.logger.debug(`${this.tag}: peerConnection State: ${state}`);\n    }\n    async getRTPReport(report) {\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        const peerConnection = sessionDescriptionHandler.peerConnection;\n        try {\n            const stats = await peerConnection.getStats();\n            stats.forEach((stat)=>{\n                switch(stat.type){\n                    case \"inbound-rtp\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"bytesReceived\":\n                                case \"packetsReceived\":\n                                case \"jitter\":\n                                case \"packetsLost\":\n                                case \"fractionLost\":\n                                case \"mediaType\":\n                                    report.inboundRtpReport[statName] = stat[statName];\n                                    break;\n                                case \"roundTripTime\":\n                                    report.rttMs[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    case \"outbound-rtp\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"bytesSent\":\n                                case \"packetsSent\":\n                                case \"mediaType\":\n                                    report.outboundRtpReport[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    case \"candidate-pair\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"currentRoundTripTime\":\n                                    report.rttMs[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    case \"local-candidate\":\n                        {\n                            const local_candidate = {};\n                            Object.keys(stat).forEach((statName)=>{\n                                switch(statName){\n                                    case \"id\":\n                                    case \"isRemote\":\n                                    case \"ip\":\n                                    case \"candidateType\":\n                                    case \"networkType\":\n                                    case \"priority\":\n                                    case \"port\":\n                                        local_candidate[statName] = stat[statName];\n                                        break;\n                                }\n                            });\n                            report.localCandidates.push(local_candidate);\n                            break;\n                        }\n                    case \"remote-candidate\":\n                        {\n                            const remote_candidate = {};\n                            Object.keys(stat).forEach((statName)=>{\n                                switch(statName){\n                                    case \"id\":\n                                    case \"isRemote\":\n                                    case \"ip\":\n                                    case \"priority\":\n                                    case \"port\":\n                                    case \"candidateType\":\n                                        remote_candidate[statName] = stat[statName];\n                                        break;\n                                }\n                            });\n                            report.remoteCandidates.push(remote_candidate);\n                            break;\n                        }\n                    case \"media-source\":\n                        report.outboundRtpReport.rtpLocalAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n                        break;\n                    case \"track\":\n                        if (!stat.remoteSource) break;\n                        report.inboundRtpReport.rtpRemoteAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n                        break;\n                    case \"transport\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"dtlsState\":\n                                case \"packetsSent\":\n                                case \"packetsReceived\":\n                                case \"selectedCandidatePairChanges\":\n                                case \"selectedCandidatePairId\":\n                                    report.transport[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    default:\n                        break;\n                }\n            });\n            if (!Object.hasOwn(report.rttMs, \"currentRoundTripTime\")) {\n                if (!Object.hasOwn(report.rttMs, \"roundTripTime\")) report.rttMs.currentRoundTripTime = this.preRTT.currentRoundTripTime;\n                else {\n                    report.rttMs.currentRoundTripTime = report.rttMs.roundTripTime; // for Firefox\n                    delete report.rttMs.roundTripTime;\n                }\n            } else report.rttMs.currentRoundTripTime = Math.round(report.rttMs.currentRoundTripTime * 1000);\n            if (Object.hasOwn(report.rttMs, \"currentRoundTripTime\")) this.preRTT.currentRoundTripTime = report.rttMs.currentRoundTripTime;\n            this.onRTPStat(report, this.session);\n            this.session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.RTPStat, report);\n        } catch (e) {\n            this.session.logger.error(`${this.tag}: Unable to get media stats: ${e.message}`);\n        }\n    }\n}\n\n\nfunction $0fa0cda49b523db1$export$ce9161a35b9f9ac4(report) {\n    if (!report.inboundRtpReport) return true;\n    if (!report.outboundRtpReport) return true;\n    if (report.inboundRtpReport.packetsReceived === 0 || report.outboundRtpReport.packetsSent === 0) return true;\n    return false;\n}\n\n\n\n\n\n\n/**\n * {@link Publisher} state.\n * @remarks\n * The {@link Publisher} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                  __________________________________________\n *                 |  __________________________              |\n * Publisher       | |                          v             v\n * Constructed -> Initial -> Published -> Unpublished -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */ var $2af1ef8c111a9103$export$4d381a3f3c9c9827;\n(function(PublisherState) {\n    PublisherState[\"Initial\"] = \"Initial\";\n    PublisherState[\"Published\"] = \"Published\";\n    PublisherState[\"Unpublished\"] = \"Unpublished\";\n    PublisherState[\"Terminated\"] = \"Terminated\";\n})($2af1ef8c111a9103$export$4d381a3f3c9c9827 = $2af1ef8c111a9103$export$4d381a3f3c9c9827 || ($2af1ef8c111a9103$export$4d381a3f3c9c9827 = {}));\n\n\nclass $3c8038551aa85175$export$9abcd9565debde5d {\n    /**\n     * Constructs a new instance of the `Publisher` class.\n     *\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param eventType - The event type identifying the published document.\n     * @param options - Options bucket. See {@link PublisherOptions} for details.\n     */ constructor(userAgent, targetURI, eventType, options = {}){\n        this.disposed = false;\n        /** The publication state. */ this._state = (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Initial;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        this.userAgent = userAgent;\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.contentType = options.contentType || \"text/plain\";\n        if (typeof options.expires !== \"number\" || options.expires % 1 !== 0) options.expires = 3600;\n        else options.expires = Number(options.expires);\n        if (typeof options.unpublishOnClose !== \"boolean\") options.unpublishOnClose = true;\n        this.target = targetURI;\n        this.event = eventType;\n        this.options = options;\n        this.pubRequestExpires = options.expires;\n        this.logger = userAgent.getLogger(\"sip.Publisher\");\n        const params = options.params || {};\n        const fromURI = params.fromUri ? params.fromUri : userAgent.userAgentCore.configuration.aor;\n        const toURI = params.toUri ? params.toUri : targetURI;\n        let body;\n        if (options.body && options.contentType) {\n            const contentDisposition = \"render\";\n            const contentType = options.contentType;\n            const content = options.body;\n            body = {\n                contentDisposition: contentDisposition,\n                contentType: contentType,\n                content: content\n            };\n        }\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PUBLISH, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // Identifier\n        this.id = this.target.toString() + \":\" + this.event;\n        // Add to the user agent's publisher collection.\n        this.userAgent._publishers[this.id] = this;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        this.logger.log(`Publisher ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's publisher collection\n        delete this.userAgent._publishers[this.id];\n        // Send unpublish, if requested\n        if (this.options.unpublishOnClose && this.state === (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published) return this.unpublish();\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        this.pubRequestEtag = undefined;\n        return Promise.resolve();\n    }\n    /** The publication state. */ get state() {\n        return this._state;\n    }\n    /** Emits when the publisher state changes. */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * Publish.\n     * @param content - Body to publish\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    publish(content, options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // is Initial or Modify request\n        this.options.body = content;\n        this.pubRequestBody = this.options.body;\n        if (this.pubRequestExpires === 0) {\n            // This is Initial request after unpublish\n            if (this.options.expires === undefined) throw new Error(\"Expires undefined.\");\n            this.pubRequestExpires = this.options.expires;\n            this.pubRequestEtag = undefined;\n        }\n        this.sendPublishRequest();\n        return Promise.resolve();\n    }\n    /**\n     * Unpublish.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    unpublish(options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        if (this.pubRequestEtag !== undefined) this.sendPublishRequest();\n        return Promise.resolve();\n    }\n    /** @internal */ receiveResponse(response) {\n        const statusCode = response.statusCode || 0;\n        switch(true){\n            case /^1[0-9]{2}$/.test(statusCode.toString()):\n                break;\n            case /^2[0-9]{2}$/.test(statusCode.toString()):\n                // Set SIP-Etag\n                if (response.hasHeader(\"SIP-ETag\")) this.pubRequestEtag = response.getHeader(\"SIP-ETag\");\n                else this.logger.warn(\"SIP-ETag header missing in a 200-class response to PUBLISH\");\n                // Update Expire\n                if (response.hasHeader(\"Expires\")) {\n                    const expires = Number(response.getHeader(\"Expires\"));\n                    if (typeof expires === \"number\" && expires >= 0 && expires <= this.pubRequestExpires) this.pubRequestExpires = expires;\n                    else this.logger.warn(\"Bad Expires header in a 200-class response to PUBLISH\");\n                } else this.logger.warn(\"Expires header missing in a 200-class response to PUBLISH\");\n                if (this.pubRequestExpires !== 0) {\n                    // Schedule refresh\n                    this.publishRefreshTimer = setTimeout(()=>this.refreshRequest(), this.pubRequestExpires * 900);\n                    if (this._state !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published) this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published);\n                } else this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                break;\n            case /^412$/.test(statusCode.toString()):\n                // 412 code means no matching ETag - possibly the PUBLISH expired\n                // Resubmit as new request, if the current request is not a \"remove\"\n                if (this.pubRequestEtag !== undefined && this.pubRequestExpires !== 0) {\n                    this.logger.warn(\"412 response to PUBLISH, recovering\");\n                    this.pubRequestEtag = undefined;\n                    if (this.options.body === undefined) throw new Error(\"Body undefined.\");\n                    this.publish(this.options.body);\n                } else {\n                    this.logger.warn(\"412 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                }\n                break;\n            case /^423$/.test(statusCode.toString()):\n                // 423 code means we need to adjust the Expires interval up\n                if (this.pubRequestExpires !== 0 && response.hasHeader(\"Min-Expires\")) {\n                    const minExpires = Number(response.getHeader(\"Min-Expires\"));\n                    if (typeof minExpires === \"number\" || minExpires > this.pubRequestExpires) {\n                        this.logger.warn(\"423 code in response to PUBLISH, adjusting the Expires value and trying to recover\");\n                        this.pubRequestExpires = minExpires;\n                        if (this.options.body === undefined) throw new Error(\"Body undefined.\");\n                        this.publish(this.options.body);\n                    } else {\n                        this.logger.warn(\"Bad 423 response Min-Expires header received for PUBLISH\");\n                        this.pubRequestExpires = 0;\n                        this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                        this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                    }\n                } else {\n                    this.logger.warn(\"423 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                }\n                break;\n            default:\n                this.pubRequestExpires = 0;\n                this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                break;\n        }\n        // Do the cleanup\n        if (this.pubRequestExpires === 0) {\n            if (this.publishRefreshTimer) {\n                clearTimeout(this.publishRefreshTimer);\n                this.publishRefreshTimer = undefined;\n            }\n            this.pubRequestBody = undefined;\n            this.pubRequestEtag = undefined;\n        }\n    }\n    /** @internal */ send() {\n        return this.userAgent.userAgentCore.publish(this.request, {\n            onAccept: (response)=>this.receiveResponse(response.message),\n            onProgress: (response)=>this.receiveResponse(response.message),\n            onRedirect: (response)=>this.receiveResponse(response.message),\n            onReject: (response)=>this.receiveResponse(response.message),\n            onTrying: (response)=>this.receiveResponse(response.message)\n        });\n    }\n    refreshRequest() {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // This is Refresh request\n        this.pubRequestBody = undefined;\n        if (this.pubRequestEtag === undefined) throw new Error(\"Etag undefined\");\n        if (this.pubRequestExpires === 0) throw new Error(\"Expires zero\");\n        this.sendPublishRequest();\n    }\n    sendPublishRequest() {\n        const reqOptions = Object.assign({}, this.options);\n        reqOptions.extraHeaders = (this.options.extraHeaders || []).slice();\n        reqOptions.extraHeaders.push(\"Event: \" + this.event);\n        reqOptions.extraHeaders.push(\"Expires: \" + this.pubRequestExpires);\n        if (this.pubRequestEtag !== undefined) reqOptions.extraHeaders.push(\"SIP-If-Match: \" + this.pubRequestEtag);\n        const ruri = this.target;\n        const params = this.options.params || {};\n        let bodyAndContentType;\n        if (this.pubRequestBody !== undefined) {\n            if (this.options.contentType === undefined) throw new Error(\"Content type undefined.\");\n            bodyAndContentType = {\n                body: this.pubRequestBody,\n                contentType: this.options.contentType\n            };\n        }\n        let body;\n        if (bodyAndContentType) body = (0, $35e2f96fad41499f$export$46b123b754f2f425)(bodyAndContentType);\n        this.request = this.userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PUBLISH, ruri, params.fromUri ? params.fromUri : this.userAgent.userAgentCore.configuration.aor, params.toUri ? params.toUri : this.target, params, reqOptions.extraHeaders, body);\n        return this.send();\n    }\n    /**\n     * Transition publication state.\n     */ stateTransition(newState) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch(this._state){\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Initial:\n                if (newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) invalidTransition();\n                break;\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published:\n                if (newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) invalidTransition();\n                break;\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished:\n                if (newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) invalidTransition();\n                break;\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Publication transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) this.dispose();\n    }\n}\n\n\n\nconst $9e1ab2fd2078bd8c$var$formatFloat = (input)=>parseFloat(input.toString()).toFixed(2);\nconst $9e1ab2fd2078bd8c$export$f03888bc45437819 = (session)=>{\n    const qosStatsObj = $9e1ab2fd2078bd8c$var$getQoSStatsTemplate();\n    qosStatsObj.callID = session.request.callId || \"\";\n    qosStatsObj.fromTag = session.request.fromTag || \"\";\n    qosStatsObj.toTag = session.request.toTag || \"\";\n    qosStatsObj.localID = session.request.getHeader(\"From\");\n    qosStatsObj.remoteID = session.request.getHeader(\"To\");\n    qosStatsObj.origID = session.request.getHeader(\"From\");\n    const refreshIntervalId = setInterval(async ()=>{\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!sessionDescriptionHandler?.peerConnection) {\n            session.logger.error(\"There is no PeerConnection, can not getStats\");\n            return;\n        }\n        const getStatsResult = await sessionDescriptionHandler.peerConnection.getStats();\n        session.logger.log(`getStatsResult ${JSON.stringify(getStatsResult)}`);\n        qosStatsObj.status = true;\n        let network = \"\";\n        getStatsResult.forEach((item)=>{\n            switch(item.type){\n                case \"local-candidate\":\n                    if (item.candidateType === \"srflx\") {\n                        network = typeof item.networkType === \"string\" ? item.networkType : $9e1ab2fd2078bd8c$var$getNetworkType(item.networkType);\n                        qosStatsObj.localAddr = item.ip + \":\" + item.port;\n                        qosStatsObj.localcandidate = item;\n                    }\n                    break;\n                case \"remote-candidate\":\n                    if (item.candidateType === \"host\") {\n                        qosStatsObj.remoteAddr = item.ip + \":\" + item.port;\n                        qosStatsObj.remotecandidate = item;\n                    }\n                    break;\n                case \"inbound-rtp\":\n                    {\n                        qosStatsObj.jitterBufferDiscardRate = item.packetsDiscarded / item.packetsReceived;\n                        qosStatsObj.inboundPacketsLost = item.packetsLost;\n                        qosStatsObj.inboundPacketsReceived = item.packetsReceived; // packetsReceived\n                        const jitterBufferMs = parseFloat(item.jitterBufferEmittedCount) > 0 ? parseFloat(item.jitterBufferDelay) / parseFloat(item.jitterBufferEmittedCount) * 1000 : 0;\n                        qosStatsObj.totalSumJitter += jitterBufferMs;\n                        qosStatsObj.totalIntervalCount += 1;\n                        qosStatsObj.NLR = $9e1ab2fd2078bd8c$var$formatFloat(item.packetsLost / (item.packetsLost + item.packetsReceived) * 100);\n                        qosStatsObj.JBM = Math.max(qosStatsObj.JBM, jitterBufferMs);\n                        qosStatsObj.netType = $9e1ab2fd2078bd8c$var$addToMap(qosStatsObj.netType, network);\n                        break;\n                    }\n                case \"candidate-pair\":\n                    qosStatsObj.RTD = Math.round(item.currentRoundTripTime / 2 * 1000);\n                    break;\n                case \"outbound-rtp\":\n                    qosStatsObj.outboundPacketsSent = item.packetsSent;\n                    break;\n                case \"remote-inbound-rtp\":\n                    qosStatsObj.outboundPacketsLost = item.packetsLost;\n                    break;\n                default:\n                    break;\n            }\n        });\n    }, session.userAgent.qosCollectInterval);\n    session.stateChange.addListener((newState)=>{\n        if (newState === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n            session.logger.log(\"Release media streams\");\n            session.mediaStreams?.release();\n            $9e1ab2fd2078bd8c$var$publishQosStats(session, qosStatsObj);\n            refreshIntervalId && clearInterval(refreshIntervalId);\n        }\n    });\n};\nconst $9e1ab2fd2078bd8c$var$publishQosStats = async (session, qosStatsObj, _options = {})=>{\n    const options = _options || {};\n    const targetUrl = options.targetUrl || \"sip:rtcpxr@rtcpxr.ringcentral.com:5060\";\n    const event = options.event || \"vq-rtcpxr\";\n    options.expires = 60;\n    options.contentType = \"application/vq-rtcpxr\";\n    options.extraHeaders = (options.extraHeaders || []).concat(session.userAgent.defaultHeaders);\n    const cpuOS = session.__qosStats.cpuOS;\n    const cpuRC = session.__qosStats.cpuRC;\n    const ram = session.__qosStats.ram;\n    const networkType = session.__qosStats.netType || $9e1ab2fd2078bd8c$var$calculateNetworkUsage(qosStatsObj) || \"\";\n    let effectiveType = \"\";\n    if (\"connection\" in navigator) effectiveType = navigator.connection.effectiveType;\n    options.extraHeaders.push(`p-rc-client-info:cpuRC=${cpuRC};cpuOS=${cpuOS};netType=${networkType};ram=${ram};effectiveType=${effectiveType}`);\n    session.logger.log(`QOS stats ${JSON.stringify(qosStatsObj)}`);\n    const calculatedStatsObj = $9e1ab2fd2078bd8c$var$calculateStats(qosStatsObj);\n    const body = $9e1ab2fd2078bd8c$var$createPublishBody(calculatedStatsObj);\n    const publisher = new (0, $3c8038551aa85175$export$9abcd9565debde5d)(session.userAgent, (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(targetUrl), event, options);\n    await publisher.publish(body);\n    session.logger.log(\"Local Candidate: \" + JSON.stringify(qosStatsObj.localcandidate));\n    session.logger.log(\"Remote Candidate: \" + JSON.stringify(qosStatsObj.remotecandidate));\n    qosStatsObj.status = false;\n    await publisher.dispose();\n    session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.QOSPublished, body);\n};\nconst $9e1ab2fd2078bd8c$var$calculateNetworkUsage = (qosStatsObj)=>{\n    const networkType = [];\n    for (const [key, value] of Object.entries(qosStatsObj.netType))networkType.push(key + \":\" + $9e1ab2fd2078bd8c$var$formatFloat(value * 100 / qosStatsObj.totalIntervalCount));\n    return networkType.join();\n};\nconst $9e1ab2fd2078bd8c$var$calculateStats = (qosStatsObj)=>{\n    const rawNLR = qosStatsObj.inboundPacketsLost * 100 / (qosStatsObj.inboundPacketsReceived + qosStatsObj.inboundPacketsLost) || 0;\n    const rawJBN = qosStatsObj.totalIntervalCount > 0 ? qosStatsObj.totalSumJitter / qosStatsObj.totalIntervalCount : 0;\n    return {\n        ...qosStatsObj,\n        NLR: $9e1ab2fd2078bd8c$var$formatFloat(rawNLR),\n        JBN: $9e1ab2fd2078bd8c$var$formatFloat(rawJBN),\n        JDR: $9e1ab2fd2078bd8c$var$formatFloat(qosStatsObj.jitterBufferDiscardRate),\n        MOSLQ: $9e1ab2fd2078bd8c$var$calculateMos(qosStatsObj.inboundPacketsLost / (qosStatsObj.inboundPacketsLost + qosStatsObj.inboundPacketsReceived)),\n        MOSCQ: $9e1ab2fd2078bd8c$var$calculateMos(qosStatsObj.outboundPacketsLost / (qosStatsObj.outboundPacketsLost + qosStatsObj.outboundPacketsSent))\n    };\n};\nconst $9e1ab2fd2078bd8c$var$createPublishBody = (calculatedStatsObj)=>{\n    const NLR = calculatedStatsObj.NLR || 0;\n    const JBM = calculatedStatsObj.JBM || 0;\n    const JBN = calculatedStatsObj.JBN || 0;\n    const JDR = calculatedStatsObj.JDR || 0;\n    const MOSLQ = calculatedStatsObj.MOSLQ || 0;\n    const MOSCQ = calculatedStatsObj.MOSCQ || 0;\n    const RTD = calculatedStatsObj.RTD || 0;\n    const callID = calculatedStatsObj.callID || \"\";\n    const fromTag = calculatedStatsObj.fromTag || \"\";\n    const toTag = calculatedStatsObj.toTag || \"\";\n    const localId = calculatedStatsObj.localID || \"\";\n    const remoteId = calculatedStatsObj.remoteID || \"\";\n    const localAddr = calculatedStatsObj.localAddr || \"\";\n    const remoteAddr = calculatedStatsObj.remoteAddr || \"\";\n    return \"VQSessionReport: CallTerm\\r\\n\" + `CallID: ${callID}\\r\\n` + `LocalID: ${localId}\\r\\n` + `RemoteID: ${remoteId}\\r\\n` + `OrigID: ${localId}\\r\\n` + `LocalAddr: IP=${localAddr} SSRC=0x00000000\\r\\n` + `RemoteAddr: IP=${remoteAddr} SSRC=0x00000000\\r\\n` + \"LocalMetrics:\\r\\n\" + \"Timestamps: START=0 STOP=0\\r\\n\" + \"SessionDesc: PT=0 PD=opus SR=0 FD=0 FPP=0 PPS=0 PLC=0 SSUP=on\\r\\n\" + `JitterBuffer: JBA=0 JBR=0 JBN=${JBN} JBM=${$9e1ab2fd2078bd8c$var$formatFloat(JBM)} JBX=0\\r\\n` + `PacketLoss: NLR=${NLR} JDR=${JDR}\\r\\n` + \"BurstGapLoss: BLD=0 BD=0 GLD=0 GD=0 GMIN=0\\r\\n\" + `Delay: RTD=${RTD} ESD=0 SOWD=0 IAJ=0\\r\\n` + `QualityEst: MOSLQ=${$9e1ab2fd2078bd8c$var$formatFloat(MOSLQ)} MOSCQ=${$9e1ab2fd2078bd8c$var$formatFloat(MOSCQ)}\\r\\n` + `DialogID: ${callID};to-tag=${toTag};from-tag=${fromTag}`;\n};\nconst $9e1ab2fd2078bd8c$var$getQoSStatsTemplate = ()=>({\n        localAddr: \"\",\n        remoteAddr: \"\",\n        callID: \"\",\n        localID: \"\",\n        remoteID: \"\",\n        origID: \"\",\n        fromTag: \"\",\n        toTag: \"\",\n        timestamp: {\n            start: \"\",\n            stop: \"\"\n        },\n        netType: {},\n        jitterBufferNominal: 0,\n        jitterBufferMax: 0,\n        jitterBufferDiscardRate: 0,\n        totalSumJitter: 0,\n        totalIntervalCount: 0,\n        NLR: \"\",\n        JBM: 0,\n        JBN: \"\",\n        JDR: \"\",\n        MOSLQ: 0,\n        MOSCQ: 0,\n        RTD: 0,\n        status: false,\n        localcandidate: {},\n        remotecandidate: {},\n        inboundPacketsLost: 0,\n        inboundPacketsReceived: 0,\n        outboundPacketsLost: 0,\n        outboundPacketsSent: 0\n    });\nconst $9e1ab2fd2078bd8c$var$addToMap = (map = {}, key)=>({\n        ...map,\n        [key]: (key in map ? parseInt(map[key], 10) : 0) + 1\n    });\nconst $9e1ab2fd2078bd8c$var$networkTypeMap = {\n    bluetooth: \"Bluetooth\",\n    cellular: \"Cellulars\",\n    ethernet: \"Ethernet\",\n    wifi: \"WiFi\",\n    vpn: \"VPN\",\n    wimax: \"WiMax\",\n    \"2g\": \"2G\",\n    \"3g\": \"3G\",\n    \"4g\": \"4G\"\n};\n// TODO: find reliable way to find network type , use navigator.connection.type?\nconst $9e1ab2fd2078bd8c$var$getNetworkType = (connectionType)=>{\n    const sysNetwork = connectionType.systemNetworkType || \"unknown\";\n    const localNetwork = connectionType || \"unknown\";\n    const networkType = !sysNetwork || sysNetwork === \"unknown\" ? localNetwork : sysNetwork;\n    return networkType in $9e1ab2fd2078bd8c$var$networkTypeMap ? $9e1ab2fd2078bd8c$var$networkTypeMap[networkType] : networkType;\n};\nfunction $9e1ab2fd2078bd8c$var$calculateMos(packetLoss) {\n    if (packetLoss <= 0.008) return 4.5;\n    if (packetLoss > 0.45) return 1.0;\n    const bpl = 17.2647;\n    const r = 93.2062077233 - 95.0 * (packetLoss * 100 / (packetLoss * 100 + bpl)) + 4;\n    let mos = 2.06405 + 0.031738 * r - 0.000356641 * r * r + 2.93143 * Math.pow(10, -6) * r * r * r;\n    if (mos < 1) return 1.0;\n    if (mos > 4.5) return 4.5;\n    if (packetLoss >= 0.35 && mos > 2.7) mos = 2.7;\n    else if (packetLoss >= 0.3 && mos > 3.0) mos = 3.0;\n    else if (packetLoss >= 0.2 && mos > 3.6) mos = 3.6;\n    else if (packetLoss >= 0.15 && mos > 3.7) mos = 3.7;\n    else if (packetLoss >= 0.1 && mos > 3.9) mos = 4.1;\n    else if (packetLoss >= 0.05 && mos > 4.1) mos = 4.3;\n    else if (packetLoss >= 0.03 && mos > 4.1) mos = 4.4;\n    return mos;\n}\n\n\nclass $7fe4376d5b6c2e01$export$1ae48eba03bc0682 {\n    /** @ignore */ __isRecording;\n    /** @ignore */ __localHold;\n    /** @ignore */ __patched;\n    /** @ignore */ __userAgentCoreEventsSetup;\n    /** Flag to check if the call is on hold or not */ held;\n    /** Options to represent dom elements where media stream should be loaded */ media;\n    /** Flag to indicate if media stats are being collected */ mediaStatsStarted;\n    /** MediaStreams class instance which has the logic to collect media stream stats */ mediaStreams;\n    /** Flag to check if the call is muted or not */ muted;\n    /** Counter to represent how many media stats report were missed because of no audio */ noAudioReportCount;\n    /** JOSN representation of RC headers received for an incoming call */ rcHeaders;\n    __qosStats;\n    /** Flag to represent if reinvite request was sent because there was no audio reported */ reinviteForNoAudioSent;\n    /** Time when session was started */ startTime;\n    /** @ignore */ __accept;\n    /** @ignore */ __dispose;\n    /** Method to attach event listener for session specific events */ addListener;\n    /** Add track to media source */ addTrack;\n    /** RingCentral barge implementation */ barge;\n    /** RingCentral blind transfer implementation */ blindTransfer;\n    /**\n   * @internal\n   * Helper function which represents if call control features can be used or not\n   */ canUseRCMCallControl;\n    /**\n   * @internal\n   * Create session message which would be sent to the RingCentral backend\n   */ createSessionMessage;\n    /** Sends a DTMF over the call */ dtmf;\n    /** Emit session specific events which will trigger all the event listeners attached */ emit;\n    /** RingCentral flip implementation */ flip;\n    /** RingCentral flip implementation */ forward;\n    /** Put the call on hold */ hold;\n    /** Ignore incoming call */ ignore;\n    /** Mute the call */ mute;\n    /** Remove event listener */ off;\n    /** Add event listener. Same as addListener */ on;\n    /** Add once event listener. Same as addListener */ once;\n    /** Returns if the call is on hold locally or not */ onLocalHold;\n    /** RingCentral park implementation */ park;\n    /** Send a session reinvite */ reinvite;\n    /** Remove event listener */ removeListener;\n    /** Remove all event listeners */ removeAllListeners;\n    /** RingCentral reply with message implementation */ replyWithMessage;\n    /**\n   * @internal\n   * Helper method that sends an INFO request to other user agent and then waits for an INFO request from the other user agent\n   */ sendInfoAndReceiveResponse;\n    /**\n   * @internal\n   * Helper function to send INFO request with `move` instruction to RingCentral backend\n   */ sendMoveResponse;\n    /** Send `receiveConfirm` command to backend */ sendReceiveConfirm;\n    /** Helper function to send session message to backend using UserAgent */ sendSessionMessage;\n    /** Start recording the call */ startRecord;\n    /** Function to stop collecting media stats */ stopMediaStats;\n    /** Stop recording the call */ stopRecord;\n    /** Send incoming call to voicemail */ toVoicemail;\n    /** Transfer current call */ transfer;\n    /** Put the call on unhold */ unhold;\n    /** Unmute the call */ unmute;\n    /** RingCentral warm transfer implementation */ warmTransfer;\n    /** RingCentral whisper implementation */ whisper;\n    setQosStats;\n}\nconst $7fe4376d5b6c2e01$var$mediaCheckTimer = 2000;\nfunction $7fe4376d5b6c2e01$export$859ed353f486f09(session) {\n    if (session.__patched) return session;\n    session.__patched = true;\n    session.held = false;\n    session.muted = false;\n    session.media = session.userAgent.media;\n    session.__dispose = session.dispose.bind(session);\n    session.dispose = $7fe4376d5b6c2e01$var$dispose.bind(session);\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    session.on = eventEmitter.on.bind(eventEmitter);\n    session.off = eventEmitter.off.bind(eventEmitter);\n    session.once = eventEmitter.once.bind(eventEmitter);\n    session.addListener = eventEmitter.addListener.bind(eventEmitter);\n    session.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    session.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n    session.emit = eventEmitter.emit.bind(eventEmitter);\n    session.sendInfoAndReceiveResponse = $7fe4376d5b6c2e01$var$sendInfoAndReceiveResponse.bind(session);\n    session.startRecord = $7fe4376d5b6c2e01$var$startRecord.bind(session);\n    session.stopRecord = $7fe4376d5b6c2e01$var$stopRecord.bind(session);\n    session.sendMoveResponse = $7fe4376d5b6c2e01$var$sendMoveResponse.bind(session);\n    session.park = $7fe4376d5b6c2e01$var$park.bind(session);\n    session.flip = $7fe4376d5b6c2e01$var$flip.bind(session);\n    session.whisper = $7fe4376d5b6c2e01$var$whisper.bind(session);\n    session.barge = $7fe4376d5b6c2e01$var$barge.bind(session);\n    session.mute = $7fe4376d5b6c2e01$var$mute.bind(session);\n    session.unmute = $7fe4376d5b6c2e01$var$unmute.bind(session);\n    session.addTrack = $7fe4376d5b6c2e01$var$addTrack.bind(session);\n    session.stopMediaStats = $7fe4376d5b6c2e01$var$stopMediaStats.bind(session);\n    session.warmTransfer = $7fe4376d5b6c2e01$var$warmTransfer.bind(session);\n    session.blindTransfer = $7fe4376d5b6c2e01$var$blindTransfer.bind(session);\n    session.transfer = $7fe4376d5b6c2e01$var$transfer.bind(session);\n    session.hold = $7fe4376d5b6c2e01$var$hold.bind(session);\n    session.unhold = $7fe4376d5b6c2e01$var$unhold.bind(session);\n    session.dtmf = $7fe4376d5b6c2e01$var$dtmf.bind(session);\n    session.reinvite = $7fe4376d5b6c2e01$var$reinvite.bind(session);\n    session.forward = $7fe4376d5b6c2e01$var$forward.bind(session); // FIXME: Not needed?\n    session.__qosStats = {};\n    session.setQosStats = $7fe4376d5b6c2e01$var$setQosStats.bind(session);\n    $7fe4376d5b6c2e01$var$setupUserAgentCoreEvent(session);\n    session.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Establishing);\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                $7fe4376d5b6c2e01$var$stopPlaying(session);\n                session.addTrack();\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Established);\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                $7fe4376d5b6c2e01$var$stopPlaying(session);\n                $7fe4376d5b6c2e01$var$stopMediaStreamStats(session);\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Terminating);\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                $7fe4376d5b6c2e01$var$stopPlaying(session);\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Terminated);\n                break;\n        }\n    });\n    // FIXME: Do we need this? The replaced session is part of existing sessions and would have already been patched\n    // NEEDED - inviter.ts L191\n    // session.on(\"replaced\", patchWebphoneSession);\n    if (session.userAgent.onSession) session.userAgent.onSession(session);\n    session.mediaStatsStarted = false;\n    session.noAudioReportCount = 0;\n    session.reinviteForNoAudioSent = false;\n    return session;\n}\nfunction $7fe4376d5b6c2e01$export$457de3b0bdcdb849(session) {\n    try {\n        $7fe4376d5b6c2e01$var$parseRcHeader(session);\n    } catch (e) {\n        session.logger.error(\"Can't parse RC headers from invite request due to \" + e);\n    }\n    session.canUseRCMCallControl = $7fe4376d5b6c2e01$var$canUseRCMCallControl.bind(session);\n    session.createSessionMessage = $7fe4376d5b6c2e01$var$createSessionMessage.bind(session);\n    session.ignore = $7fe4376d5b6c2e01$var$ignore.bind(session);\n    session.replyWithMessage = $7fe4376d5b6c2e01$var$replyWithMessage.bind(session);\n    session.sendReceiveConfirm = $7fe4376d5b6c2e01$var$sendReceiveConfirm.bind(session);\n    session.sendSessionMessage = $7fe4376d5b6c2e01$var$sendSessionMessage.bind(session);\n    session.toVoicemail = $7fe4376d5b6c2e01$var$toVoicemail.bind(session);\n    session.__accept = session.accept.bind(session);\n    session.accept = $7fe4376d5b6c2e01$var$accept.bind(session);\n    $7fe4376d5b6c2e01$var$setupUserAgentCoreEvent(session);\n}\nfunction $7fe4376d5b6c2e01$var$canUseRCMCallControl() {\n    return !!this.rcHeaders;\n}\nfunction $7fe4376d5b6c2e01$var$createSessionMessage(options) {\n    if (!this.rcHeaders) throw Error(\"createSessionMessage options is undefined\");\n    (0, $df5bef30413a053b$export$8b58be045bf06082)(options, {\n        sid: this.rcHeaders.sid,\n        request: this.rcHeaders.request,\n        from: this.rcHeaders.to,\n        to: this.rcHeaders.from\n    });\n    return this.userAgent.createRcMessage(options);\n}\nasync function $7fe4376d5b6c2e01$var$sendReceiveConfirm() {\n    return this.sendSessionMessage((0, $9ecda7333d28e490$export$defe85febe8b728c).receiveConfirm).then((response)=>{\n        this.logger.log(\"sendReceiveConfirm success\");\n        return response;\n    }).catch((error)=>this.logger.error(`failed to send receive confirmation via SIP MESSAGE due to ${error.message}`));\n}\nfunction $7fe4376d5b6c2e01$var$sendSessionMessage(options) {\n    if (!this.rcHeaders) this.logger.error(\"Can't send SIP MESSAGE related to session: no RC headers available\");\n    return this.userAgent.sendMessage(this.rcHeaders.from, this.createSessionMessage(options));\n}\nasync function $7fe4376d5b6c2e01$var$sendInfoAndReceiveResponse(command, _options) {\n    const options = _options || {};\n    (0, $df5bef30413a053b$export$8b58be045bf06082)(command, options);\n    delete command.extraHeaders;\n    return new Promise((resolve, reject)=>{\n        const requestDelegate = {\n            onAccept: (response)=>{\n                let timeout;\n                const { message: { statusCode: statusCode, callId: callId } } = response;\n                if (statusCode === 200) {\n                    const onInfo = (message)=>{\n                        // FIXME: I think we need this check here\n                        if (message.callId !== callId) return;\n                        const body = message?.body || \"{}\";\n                        let obj;\n                        try {\n                            obj = JSON.parse(body);\n                        } catch (e) {\n                            obj = {};\n                        }\n                        if (obj.response && obj.response.command === command.command && obj.response.result) {\n                            timeout && clearTimeout(timeout);\n                            this.off(\"RC_SIP_INFO\", onInfo);\n                            if (obj.response.result.code.toString() === \"0\") return resolve(obj.response.result);\n                            return reject(obj.response.result);\n                        }\n                    };\n                    timeout = setTimeout(()=>{\n                        reject(new Error(\"Timeout: no reply\"));\n                        this.off(\"RC_SIP_INFO\", onInfo);\n                    }, (0, $9ecda7333d28e490$export$2cd411766cb0f9c));\n                    this.on(\"RC_SIP_INFO\", onInfo);\n                } else reject(new Error(`The INFO response status code is: ${statusCode} (waiting for 200)`));\n            },\n            onReject: (response)=>{\n                reject(new Error(`The INFO response status code is: ${response.message.statusCode} (waiting for 200)`));\n            }\n        };\n        const requestOptions = {\n            extraHeaders: [\n                ...options.extraHeaders || [],\n                ...this.userAgent.defaultHeaders\n            ],\n            body: (0, $35e2f96fad41499f$export$46b123b754f2f425)({\n                body: JSON.stringify({\n                    request: command\n                }),\n                contentType: \"application/json;charset=utf-8\"\n            })\n        };\n        this.info({\n            requestDelegate: requestDelegate,\n            requestOptions: requestOptions\n        });\n    });\n}\nasync function $7fe4376d5b6c2e01$var$startRecord() {\n    return $7fe4376d5b6c2e01$var$setRecord(this, true);\n}\nasync function $7fe4376d5b6c2e01$var$stopRecord() {\n    return $7fe4376d5b6c2e01$var$setRecord(this, false);\n}\n// eslint-disable-next-line max-params\nfunction $7fe4376d5b6c2e01$var$sendMoveResponse(reqId, code, description, options = {}) {\n    const extraHeaders = options.extraHeaders || [];\n    const requestOptions = {\n        extraHeaders: [\n            ...extraHeaders,\n            ...this.userAgent.defaultHeaders\n        ],\n        body: (0, $35e2f96fad41499f$export$46b123b754f2f425)({\n            body: JSON.stringify({\n                response: {\n                    reqId: reqId,\n                    command: \"move\",\n                    result: {\n                        code: code,\n                        description: description\n                    }\n                }\n            }),\n            contentType: \"application/json;charset=utf-8\"\n        })\n    };\n    this.info({\n        requestOptions: requestOptions\n    });\n}\nfunction $7fe4376d5b6c2e01$var$ignore() {\n    return this.sendReceiveConfirm().then(()=>this.sendSessionMessage((0, $9ecda7333d28e490$export$defe85febe8b728c).ignore));\n}\nfunction $7fe4376d5b6c2e01$var$toVoicemail() {\n    return this.sendReceiveConfirm().then(()=>this.sendSessionMessage((0, $9ecda7333d28e490$export$defe85febe8b728c).toVoicemail));\n}\nfunction $7fe4376d5b6c2e01$var$replyWithMessage(replyOptions) {\n    let body = 'RepTp=\"' + replyOptions.replyType + '\"';\n    if (replyOptions.replyType === 0) body += ' Bdy=\"' + replyOptions.replyText + '\"';\n    else if (replyOptions.replyType === 1 || replyOptions.replyType === 4) {\n        body += ' Vl=\"' + replyOptions.timeValue + '\"';\n        body += ' Units=\"' + replyOptions.timeUnits + '\"';\n        body += ' Dir=\"' + replyOptions.callbackDirection + '\"';\n    }\n    return this.sendReceiveConfirm().then(()=>this.sendSessionMessage({\n            reqid: (0, $9ecda7333d28e490$export$defe85febe8b728c).replyWithMessage.reqid,\n            body: body\n        }));\n}\nasync function $7fe4376d5b6c2e01$var$flip(target) {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).flip, {\n        target: target\n    });\n}\nasync function $7fe4376d5b6c2e01$var$whisper() {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).whisper);\n}\nasync function $7fe4376d5b6c2e01$var$barge() {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).barge);\n}\nfunction $7fe4376d5b6c2e01$var$park() {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).park);\n}\nfunction $7fe4376d5b6c2e01$var$mute(silent) {\n    if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n        this.logger.warn(\"An active session is required to mute audio\");\n        return;\n    }\n    if (this.muted) {\n        this.logger.debug(\"Session already muted\");\n        return;\n    }\n    this.logger.log(\"Muting Audio\");\n    $7fe4376d5b6c2e01$var$enableSenderTracks(this, false);\n    this.muted = true;\n    if (!silent) this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Muted, this);\n}\nfunction $7fe4376d5b6c2e01$var$unmute(silent) {\n    if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n        this.logger.warn(\"An active session is required to unmute audio\");\n        return;\n    }\n    if (!this.muted) {\n        this.logger.debug(\"Session not muted\");\n        return;\n    }\n    this.logger.log(\"Unmuting Audio\");\n    $7fe4376d5b6c2e01$var$enableSenderTracks(this, true);\n    this.muted = false;\n    if (!silent) this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Unmuted, this);\n}\nfunction $7fe4376d5b6c2e01$var$addTrack(remoteAudioEle, localAudioEle) {\n    const sessionDescriptionHandler = this.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    let remoteAudio;\n    let localAudio;\n    if (remoteAudioEle && localAudioEle) {\n        remoteAudio = remoteAudioEle;\n        localAudio = localAudioEle;\n    } else if (this.media) {\n        remoteAudio = this.media.remote;\n        localAudio = this.media.local;\n    } else throw new Error(\"HTML Media Element not Defined\");\n    // TODO: peerConnecton.remoteMediaStream already has reciver track added thanks to default session description handler. Can we remove this code?\n    let remoteStream = new MediaStream();\n    if (peerConnection?.getReceivers) peerConnection.getReceivers().forEach((receiver)=>{\n        const rtrack = receiver.track;\n        if (rtrack) {\n            remoteStream.addTrack(rtrack);\n            this.logger.log(\"Remote track added\");\n        }\n    });\n    else {\n        remoteStream = sessionDescriptionHandler.remoteMediaStream;\n        this.logger.log(\"Remote track added\");\n    }\n    remoteAudio.srcObject = remoteStream;\n    remoteAudio.play().catch(()=>{\n        this.logger.error(\"Remote play was rejected\");\n    });\n    // TODO: peerConnecton.localMediaStream already has sender track added thanks to default session description handler. Can we remove this code?\n    let localStream = new MediaStream();\n    if (peerConnection?.getSenders) peerConnection.getSenders().forEach((sender)=>{\n        const strack = sender.track;\n        if (strack && strack.kind === \"audio\") {\n            localStream.addTrack(strack);\n            this.logger.log(\"Local track added\");\n        }\n    });\n    else {\n        localStream = sessionDescriptionHandler.localMediaStream;\n        this.logger.log(\"Local track added\");\n    }\n    localAudio.srcObject = localStream;\n    localAudio.play().catch(()=>{\n        this.logger.error(\"Local play was rejected\");\n    });\n    if (localStream && remoteStream && !this.mediaStatsStarted) {\n        this.mediaStreams = new (0, $557a2ee3af030028$export$2e2bcd8739ae039)(this);\n        this.logger.log(\"Start gathering media report\");\n        this.mediaStatsStarted = true;\n        this.mediaStreams.getMediaStats((report)=>{\n            if (this.userAgent.enableMediaReportLogging) this.logger.log(`Got media report: ${JSON.stringify(report)}`);\n            if (!this.reinviteForNoAudioSent && (0, $0fa0cda49b523db1$export$ce9161a35b9f9ac4)(report)) {\n                this.logger.log(\"No audio report\");\n                this.noAudioReportCount++;\n                if (this.noAudioReportCount === 3) {\n                    this.logger.log(\"No audio for 6 sec. Trying to recover audio by sending Re-invite\");\n                    this.mediaStreams.reconnectMedia();\n                    this.reinviteForNoAudioSent = true;\n                    this.noAudioReportCount = 0;\n                }\n            } else if (!(0, $0fa0cda49b523db1$export$ce9161a35b9f9ac4)(report)) this.noAudioReportCount = 0;\n        }, $7fe4376d5b6c2e01$var$mediaCheckTimer);\n    }\n}\nfunction $7fe4376d5b6c2e01$var$stopMediaStats() {\n    this.logger.log(\"Stopping media stats collection\");\n    if (!this) return;\n    this.mediaStreams?.stopMediaStats();\n    this.mediaStatsStarted = false;\n    this.noAudioReportCount = 0;\n}\nasync function $7fe4376d5b6c2e01$var$blindTransfer(target, options = {}) {\n    this.logger.log(\"Call transfer initiated\");\n    const newTarget = typeof target === \"string\" ? (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${target}@${this.userAgent.sipInfo.domain}`) : target;\n    return this.refer(newTarget, options);\n}\nasync function $7fe4376d5b6c2e01$var$warmTransfer(target, options = {\n    requestOptions: {\n        extraHeaders: []\n    }\n}) {\n    options.requestOptions.extraHeaders = (options.requestOptions.extraHeaders || []).concat(this.userAgent.defaultHeaders);\n    const newTarget = typeof target === \"string\" ? (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${target}@${this.userAgent.sipInfo.domain}`) : target;\n    this.logger.log(\"Completing warm transfer\");\n    return this.refer(newTarget, options);\n}\nasync function $7fe4376d5b6c2e01$var$transfer(target, options = {}) {\n    if (!options.requestOptions) options.requestOptions = {};\n    if (!options.requestOptions.extraHeaders) options.requestOptions.extraHeaders = [];\n    options.requestOptions.extraHeaders = [\n        ...options.requestOptions.extraHeaders,\n        ...this.userAgent.defaultHeaders\n    ];\n    return this.blindTransfer(target, options);\n}\n/**\n *\n * @param this WebPhoneSessionSessionInviteOptions\n * @param options\n * @returns Promise<OutgoingInviteRequest>\n *\n * Sends a reinvite. Also makes sure to regenerate a new SDP by passing offerToReceiveAudio: true, offerToReceiveVideo: false  and iceRestart: true\n * Once the SDP is ready, the local description is set and the SDP is sent to the remote peer along with an INVITE request\n */ function $7fe4376d5b6c2e01$var$reinvite(options = {}) {\n    options.sessionDescriptionHandlerOptions = {\n        ...options.sessionDescriptionHandlerOptions,\n        offerToReceiveAudio: true,\n        offerToReceiveVideo: false,\n        iceRestart: true\n    };\n    options.requestDelegate = options.requestDelegate || {};\n    const originalOnAccept = options.requestDelegate.onAccept?.bind(options.requestDelegate);\n    options.requestDelegate.onAccept = (...args)=>{\n        $7fe4376d5b6c2e01$export$457de3b0bdcdb849(this);\n        originalOnAccept?.(...args);\n    };\n    return this.invite(options);\n}\nasync function $7fe4376d5b6c2e01$var$hold() {\n    this.stopMediaStats();\n    try {\n        this.logger.log(\"Hold Initiated\");\n        await $7fe4376d5b6c2e01$var$setHold(this, true);\n        this.logger.log(\"Hold completed, held is set to true\");\n    } catch (e) {\n        throw new Error(\"Hold could not be completed\");\n    }\n}\nasync function $7fe4376d5b6c2e01$var$unhold() {\n    try {\n        this.logger.log(\"Unhold Initiated\");\n        await $7fe4376d5b6c2e01$var$setHold(this, false);\n        this.logger.log(\"Unhold completed, held is set to false\");\n    } catch (e) {\n        throw new Error(\"Unhold could not be completed\");\n    }\n    this.addTrack(this.media.remote, this.media.local);\n}\n// eslint-disable-next-line max-params\nfunction $7fe4376d5b6c2e01$var$dtmf(dtmf, _duration = 100, _interToneGap = 50) {\n    const duration = parseInt(_duration.toString(), 10);\n    const interToneGap = parseInt(_interToneGap.toString(), 10);\n    const sessionDescriptionHandler = this.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n        this.logger.error(\"Peer connection closed.\");\n        return;\n    }\n    const senders = peerConnection.getSenders();\n    const audioSender = senders.find((sender)=>sender.track && sender.track.kind === \"audio\");\n    const dtmfSender = audioSender.dtmf;\n    if (dtmfSender !== undefined && dtmfSender) {\n        this.logger.log(`Send DTMF: ${dtmf} Duration: ${duration} InterToneGap: ${interToneGap}`);\n        return dtmfSender.insertDTMF(dtmf, duration, interToneGap);\n    }\n    throw new Error(\"Send DTMF failed\");\n}\nasync function $7fe4376d5b6c2e01$var$accept(_options = {}) {\n    const options = _options || {};\n    options.extraHeaders = (options.extraHeaders || []).concat(this.userAgent.defaultHeaders);\n    options.sessionDescriptionHandlerOptions = {\n        ...options.sessionDescriptionHandlerOptions\n    };\n    options.sessionDescriptionHandlerOptions.constraints = options.sessionDescriptionHandlerOptions.constraints || {\n        ...this.userAgent.constraints,\n        optional: [\n            {\n                DtlsSrtpKeyAgreement: \"true\"\n            }\n        ]\n    };\n    try {\n        await this.__accept(options);\n        this.startTime = new Date();\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Accepted, this.request);\n    } catch (e) {\n        if (e.message.indexOf(\"Permission denied\") !== -1) this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UserMediaFailed);\n    }\n}\n// eslint-disable-next-line max-params\nasync function $7fe4376d5b6c2e01$var$forward(target, acceptOptions = {}, transferOptions = {}) {\n    await this.accept(acceptOptions);\n    return new Promise((resolve)=>{\n        this.mute();\n        setTimeout(()=>{\n            resolve(this.transfer(target, transferOptions));\n        }, 700);\n    });\n}\nasync function $7fe4376d5b6c2e01$var$dispose() {\n    $7fe4376d5b6c2e01$var$stopMediaStreamStats(this);\n    this.__dispose();\n}\n/* ---------------------------------------------------------- HELPER FUNCTIONS ---------------------------------------------------------- */ function $7fe4376d5b6c2e01$var$parseRcHeaderString(str = \"\") {\n    const pairs = str.split(/; */).filter((pair)=>pair.includes(\"=\")); // skip things that don't look like key=value\n    const result = {};\n    for (const pair of pairs){\n        let [key, value] = pair.split(\"=\");\n        key = key.trim();\n        value = value.trim();\n        if (!(key in result)) result[key] = value;\n    }\n    return result;\n}\nfunction $7fe4376d5b6c2e01$var$parseRcHeader(session) {\n    const prc = session.request.getHeader(\"P-Rc\");\n    const prcCallInfo = session.request.getHeader(\"P-Rc-Api-Call-Info\");\n    if (prc) {\n        const parser = new DOMParser();\n        const xmlDoc = parser.parseFromString(prc, \"text/xml\");\n        const hdrNode = xmlDoc.getElementsByTagName(\"Hdr\")[0];\n        const bdyNode = xmlDoc.getElementsByTagName(\"Bdy\")[0];\n        if (hdrNode) session.rcHeaders = {\n            sid: hdrNode.getAttribute(\"SID\") || undefined,\n            request: hdrNode.getAttribute(\"Req\") || undefined,\n            from: hdrNode.getAttribute(\"From\") || undefined,\n            to: hdrNode.getAttribute(\"To\") || undefined\n        };\n        if (bdyNode) (0, $df5bef30413a053b$export$8b58be045bf06082)(session.rcHeaders, {\n            srvLvl: bdyNode.getAttribute(\"SrvLvl\"),\n            srvLvlExt: bdyNode.getAttribute(\"SrvLvlExt\"),\n            nm: bdyNode.getAttribute(\"Nm\"),\n            toNm: bdyNode.getAttribute(\"ToNm\")\n        });\n    }\n    if (prcCallInfo) {\n        const parsed = $7fe4376d5b6c2e01$var$parseRcHeaderString(prcCallInfo);\n        (0, $df5bef30413a053b$export$8b58be045bf06082)(session.rcHeaders, parsed);\n    }\n}\nasync function $7fe4376d5b6c2e01$var$setRecord(session, flag) {\n    const message = flag ? (0, $9ecda7333d28e490$export$defe85febe8b728c).startRecord : (0, $9ecda7333d28e490$export$defe85febe8b728c).stopRecord;\n    if (session.__isRecording && !flag || !session.__isRecording && flag) {\n        const data = await session.sendInfoAndReceiveResponse(message);\n        session.__isRecording = !!flag;\n        return data;\n    }\n}\nfunction $7fe4376d5b6c2e01$var$enableReceiverTracks(session, enable) {\n    const sessionDescriptionHandler = session.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n        session.logger.error(\"Peer connection closed.\");\n        return;\n    }\n    peerConnection.getReceivers().forEach((receiver)=>{\n        if (receiver.track) receiver.track.enabled = enable;\n    });\n}\nfunction $7fe4376d5b6c2e01$var$enableSenderTracks(session, enable) {\n    const sessionDescriptionHandler = session.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n        session.logger.error(\"Peer connection closed.\");\n        return;\n    }\n    peerConnection.getSenders().forEach((sender)=>{\n        if (sender.track) sender.track.enabled = enable;\n    });\n}\nfunction $7fe4376d5b6c2e01$var$setHold(session, hold) {\n    return new Promise((resolve, reject)=>{\n        // Just resolve if we are already in correct state\n        if (session.held === hold) {\n            resolve();\n            return;\n        }\n        const options = {\n            requestDelegate: {\n                onAccept: async (response)=>{\n                    session.held = hold;\n                    const sessionDescriptionHandler = session.sessionDescriptionHandler;\n                    const peerConnection = sessionDescriptionHandler.peerConnection;\n                    const localSdp = peerConnection.localDescription.sdp;\n                    const match = localSdp.match(/a=(sendrecv|sendonly|recvonly|inactive)/);\n                    const direction = match ? match[1] : \"\";\n                    session.__localHold = response.message.statusCode === 200 && direction === \"sendonly\";\n                    session.logger.log(\"localhold is set to \" + session.__localHold);\n                    $7fe4376d5b6c2e01$var$enableReceiverTracks(session, !session.held);\n                    $7fe4376d5b6c2e01$var$enableSenderTracks(session, !session.held && !session.muted);\n                    resolve();\n                },\n                onReject: ()=>{\n                    session.logger.warn(\"re-invite request was rejected\");\n                    $7fe4376d5b6c2e01$var$enableReceiverTracks(session, !session.held);\n                    $7fe4376d5b6c2e01$var$enableSenderTracks(session, !session.held && !session.muted);\n                    reject(new Error(\"re-invite request was rejected\"));\n                }\n            }\n        };\n        // Session properties used to pass options to the SessionDescriptionHandler:\n        //\n        // 1) Session.sessionDescriptionHandlerOptions\n        //    SDH options for the initial INVITE transaction.\n        //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n        //\n        // 2) Session.sessionDescriptionHandlerOptionsReInvite\n        //    SDH options for re-INVITE transactions.\n        //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Session.invite().\n        const sessionDescriptionHandlerOptions = session.sessionDescriptionHandlerOptionsReInvite;\n        sessionDescriptionHandlerOptions.hold = hold;\n        session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n        // Send re-INVITE\n        session.invite(options).then(()=>{\n            // preemptively enable/disable tracks\n            $7fe4376d5b6c2e01$var$enableReceiverTracks(session, !hold);\n            $7fe4376d5b6c2e01$var$enableSenderTracks(session, !hold && !session.muted);\n        }).catch((error)=>{\n            if (error instanceof (0, $92ef9568286e94e7$export$83a8f2b4495394c4)) session.logger.error(\"A hold request is already in progress.\");\n            reject(error);\n        });\n    });\n}\nfunction $7fe4376d5b6c2e01$var$stopPlaying(session) {\n    session.userAgent.audioHelper.playOutgoing(false);\n    session.userAgent.audioHelper.playIncoming(false);\n}\nfunction $7fe4376d5b6c2e01$export$ecabafa640e73904(session) {\n    if (!session.userAgent.enableQos) return;\n    session.logger.log(\"SessionDescriptionHandler created\");\n    (0, $9e1ab2fd2078bd8c$export$f03888bc45437819)(session);\n    navigator.mediaDevices.enumerateDevices().then((devices)=>{\n        devices.forEach((device)=>session.logger.log(`${device.kind} = ${device.label} ${JSON.stringify(device)}`));\n    });\n}\nfunction $7fe4376d5b6c2e01$var$setupUserAgentCoreEvent(session) {\n    if (session.__userAgentCoreEventsSetup) return;\n    const userAgentCore = session.userAgent.userAgentCore;\n    userAgentCore.on((0, $e469250112f23c01$export$ada873a34909da65).Session.UpdateReceived, (payload)=>session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UpdateReceived, payload));\n    userAgentCore.on((0, $e469250112f23c01$export$ada873a34909da65).Session.MoveToRcv, (payload)=>session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.MoveToRcv, payload));\n    // RC_SIP_INFO event is for internal use\n    userAgentCore.on(\"RC_SIP_INFO\", (payload)=>session.emit(\"RC_SIP_INFO\", payload));\n    session.__userAgentCoreEventsSetup = true;\n}\nfunction $7fe4376d5b6c2e01$var$stopMediaStreamStats(session) {\n    if (session.mediaStreams) {\n        session.logger.log(\"Releasing media streams\");\n        session.mediaStreams.release();\n    }\n}\nfunction $7fe4376d5b6c2e01$var$onLocalHold() {\n    return this.__localHold;\n}\nfunction $7fe4376d5b6c2e01$var$setQosStats(stats) {\n    this.__qosStats.cpuOS = stats.cpuOS || \"0:0:0\";\n    this.__qosStats.cpuRC = stats.cpuRC || \"0:0:0\";\n    this.__qosStats.ram = stats.ram || \"0:0:0\";\n    this.__qosStats.netType = stats.netType || undefined;\n}\n\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\n\nfunction $abf4b9ea6aa7f3e9$export$fda6e30b178a00bc(userAgent) {\n    const userAgentCore = userAgent.userAgentCore;\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    userAgentCore.on = eventEmitter.on.bind(eventEmitter);\n    userAgentCore.off = eventEmitter.off.bind(eventEmitter);\n    userAgentCore.addListener = eventEmitter.addListener.bind(eventEmitter);\n    userAgentCore.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    userAgentCore.emit = eventEmitter.emit.bind(eventEmitter);\n    userAgentCore._receiveIncomingRequestFromTransport = userAgentCore.receiveIncomingRequestFromTransport.bind(userAgent.userAgentCore);\n    userAgentCore.receiveIncomingRequestFromTransport = $abf4b9ea6aa7f3e9$var$receiveIncomingRequestFromTransport.bind(userAgent.userAgentCore);\n}\nfunction $abf4b9ea6aa7f3e9$var$receiveIncomingRequestFromTransport(message) {\n    switch(message.method){\n        case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).UPDATE:\n            this.logger.log(\"Receive UPDATE request. Do nothing just return 200 OK\");\n            this.replyStateless(message, {\n                statusCode: 200\n            });\n            this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UpdateReceived, message);\n            return;\n        case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO:\n            {\n                // For the Move2RCV request from server\n                const content = $abf4b9ea6aa7f3e9$var$getIncomingInfoContent(message);\n                if (content?.request?.reqId && content?.request?.command === \"move\" && content?.request?.target === \"rcv\") {\n                    this.replyStateless(message, {\n                        statusCode: 200\n                    });\n                    this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.MoveToRcv, content.request);\n                    return;\n                }\n                // For other SIP INFO from server\n                this.emit(\"RC_SIP_INFO\", message);\n                // SIP.js does not support application/json content type, so we monkey override its behavior in this case\n                const contentType = message.getHeader(\"content-type\");\n                if (contentType.match(/^application\\/json/i)) {\n                    this.replyStateless(message, {\n                        statusCode: 200\n                    });\n                    return;\n                }\n                break;\n            }\n    }\n    return this._receiveIncomingRequestFromTransport(message);\n}\nfunction $abf4b9ea6aa7f3e9$var$getIncomingInfoContent(message) {\n    if (!message?.body) return {};\n    let ret = {};\n    try {\n        ret = JSON.parse(message.body);\n    } catch (e) {\n        return {};\n    }\n    return ret;\n}\n\n\nfunction $049fac7af831ffeb$export$fa697dee51767d8e(configuration, sipInfo, options, id) {\n    const extraConfiguration = {\n        delegate: {\n            onConnect: ()=>userAgent.register(),\n            onInvite: (invitation)=>{\n                userAgent.audioHelper.playIncoming(true);\n                invitation.delegate = {};\n                invitation.delegate.onSessionDescriptionHandler = ()=>(0, $7fe4376d5b6c2e01$export$ecabafa640e73904)(invitation);\n                (0, $7fe4376d5b6c2e01$export$859ed353f486f09)(invitation);\n                (0, $7fe4376d5b6c2e01$export$457de3b0bdcdb849)(invitation);\n                invitation.logger.log(\"UA received incoming call invite\");\n                invitation.sendReceiveConfirm();\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Invite, invitation);\n            },\n            onNotify: (notification)=>{\n                const event = notification.request.getHeader(\"Event\");\n                if (event === \"\") userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.ProvisionUpdate);\n                userAgent.logger.log(\"UA received notify\");\n                notification.accept();\n            }\n        }\n    };\n    const extendedConfiguration = {\n        ...extraConfiguration,\n        ...configuration\n    };\n    const userAgent = new (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf)(extendedConfiguration);\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    userAgent.on = eventEmitter.on.bind(eventEmitter);\n    userAgent.off = eventEmitter.off.bind(eventEmitter);\n    userAgent.once = eventEmitter.once.bind(eventEmitter);\n    userAgent.addListener = eventEmitter.addListener.bind(eventEmitter);\n    userAgent.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    userAgent.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n    userAgent.defaultHeaders = [\n        `P-rc-endpoint-id: ${id}`,\n        `Client-id: ${options.clientId}`\n    ];\n    if (options.defaultHeaders) userAgent.defaultHeaders.push(...options.defaultHeaders);\n    userAgent.regId = options.regId;\n    userAgent.media = {};\n    userAgent.enableQos = options.enableQos;\n    userAgent.enableMediaReportLogging = options.enableMediaReportLogging;\n    userAgent.qosCollectInterval = options.qosCollectInterval;\n    if (options.media?.remote && options.media.local) {\n        userAgent.media.remote = options.media.remote;\n        userAgent.media.local = options.media.local;\n    } else userAgent.media = undefined;\n    userAgent.registerer = new (0, $1c17056ca0658eec$export$ed326b71f90510a1)(userAgent, {\n        regId: userAgent.regId,\n        instanceId: userAgent.instanceId,\n        extraHeaders: userAgent.defaultHeaders\n    });\n    userAgent.sipInfo = sipInfo;\n    userAgent.modifiers = options.modifiers;\n    userAgent.constraints = options.mediaConstraints;\n    userAgent.earlyMedia = options.earlyMedia;\n    userAgent.audioHelper = new (0, $d7cdbcd3a3602964$export$d828144089ea9387)(options.audioHelper);\n    userAgent.onSession = options.onSession;\n    userAgent._transport = (0, $69d2e7242b6c53d5$export$483c730d9fd36349)(userAgent.transport, options);\n    userAgent.onTransportDisconnect = $049fac7af831ffeb$var$onTransportDisconnect.bind(userAgent);\n    userAgent.emit = eventEmitter.emit.bind(eventEmitter);\n    userAgent.register = $049fac7af831ffeb$var$register.bind(userAgent);\n    userAgent.unregister = $049fac7af831ffeb$var$unregister.bind(userAgent);\n    userAgent.invite = $049fac7af831ffeb$var$invite.bind(userAgent);\n    userAgent.sendMessage = $049fac7af831ffeb$var$sendMessage.bind(userAgent);\n    userAgent.createRcMessage = $049fac7af831ffeb$var$createRcMessage.bind(userAgent);\n    userAgent.switchFrom = $049fac7af831ffeb$var$switchFrom.bind(userAgent);\n    (0, $abf4b9ea6aa7f3e9$export$fda6e30b178a00bc)(userAgent);\n    userAgent.start();\n    userAgent.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Started);\n                break;\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Stopped);\n                break;\n        }\n    });\n    userAgent.registerer.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Registered);\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Unregistered);\n                break;\n        }\n    });\n    return userAgent;\n}\nfunction $049fac7af831ffeb$var$onTransportDisconnect(error) {\n    // Patch it so that reconnection is managed by WebPhoneTransport\n    if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return;\n    if (this.delegate?.onDisconnect) this.delegate.onDisconnect(error);\n    if (error) this.transport.reconnect();\n}\nfunction $049fac7af831ffeb$var$createRcMessage(options) {\n    options.body = options.body || \"\";\n    return '<Msg><Hdr SID=\"' + options.sid + '\" Req=\"' + options.request + '\" From=\"' + options.from + '\" To=\"' + options.to + '\" Cmd=\"' + options.reqid + '\"/> ' + '<Bdy Cln=\"' + this.sipInfo.authorizationId + '\" ' + options.body + \"/>\" + \"</Msg>\";\n}\nfunction $049fac7af831ffeb$var$sendMessage(_to, messageData) {\n    const extraHeaders = [\n        `P-rc-ws: ${this.contact}`\n    ];\n    // For some reason, UserAgent.makeURI is unable to parse username starting with #\n    // Fix in later release if this is fixed by SIP.js\n    let to = _to;\n    const [user] = to.split(\"@\");\n    to = to.startsWith(\"#\") ? `sip:${to.substring(1)}` : `sip:${to}`;\n    const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(to);\n    uri.user = user;\n    const messager = new (0, $1a5a7fa3a929ac56$export$9631269509c3d1fb)(this, uri, messageData, \"x-rc/agent\", {\n        extraHeaders: extraHeaders\n    });\n    return new Promise((resolve, reject)=>{\n        messager.message({\n            requestDelegate: {\n                onAccept: resolve,\n                onReject: reject\n            }\n        });\n    });\n}\nasync function $049fac7af831ffeb$var$register() {\n    await this.registerer.register({\n        requestDelegate: {\n            onReject: (response)=>{\n                if (!response) return;\n                if (this.transport.isSipErrorCode(response.message.statusCode)) this.transport.onSipErrorCode();\n                this.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.RegistrationFailed, response);\n                this.logger.warn(\"UA Registration Failed\");\n            }\n        }\n    });\n}\nasync function $049fac7af831ffeb$var$unregister() {\n    await this.registerer.unregister();\n}\nfunction $049fac7af831ffeb$var$invite(number, options = {}) {\n    const inviterOptions = {};\n    inviterOptions.extraHeaders = [\n        ...options.extraHeaders || [],\n        ...this.defaultHeaders,\n        `P-Asserted-Identity: sip:${(options.fromNumber || this.sipInfo.username) + \"@\" + this.sipInfo.domain}`,\n        ...options.homeCountryId ? [\n            `P-rc-country-id: ${options.homeCountryId}`\n        ] : []\n    ];\n    options.RTCConstraints = options.RTCConstraints || {\n        ...this.constraints,\n        optional: [\n            {\n                DtlsSrtpKeyAgreement: \"true\"\n            }\n        ]\n    };\n    inviterOptions.sessionDescriptionHandlerModifiers = this.modifiers;\n    inviterOptions.sessionDescriptionHandlerOptions = {\n        constraints: options.RTCConstraints\n    };\n    inviterOptions.earlyMedia = this.earlyMedia;\n    inviterOptions.delegate = {\n        onSessionDescriptionHandler: ()=>(0, $7fe4376d5b6c2e01$export$ecabafa640e73904)(inviter),\n        onNotify: (notification)=>notification.accept()\n    };\n    this.audioHelper.playOutgoing(true);\n    this.logger.log(`Invite to ${number} created with playOutgoing set to true`);\n    const inviter = new (0, $989df868235ee8e3$export$2215cc52469fcfa0)(this, (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${number}@${this.sipInfo.domain}`), inviterOptions);\n    inviter.invite({\n        requestDelegate: {\n            onAccept: (inviteResponse)=>{\n                inviter.startTime = new Date();\n                inviter.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Accepted, inviteResponse.message);\n            },\n            onProgress: (inviteResponse)=>{\n                inviter.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Progress, inviteResponse.message);\n            }\n        }\n    }).then(()=>this.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.InviteSent, inviter)).catch((e)=>{\n        if (e.message.indexOf(\"Permission denied\") > -1) inviter.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UserMediaFailed);\n        throw e;\n    });\n    (0, $7fe4376d5b6c2e01$export$859ed353f486f09)(inviter);\n    return inviter;\n}\n/**\n * Support to switch call from other device to current web phone device\n * need active call information from details presence API for switching\n * https://developers.ringcentral.com/api-reference/Detailed-Extension-Presence-with-SIP-Event\n */ function $049fac7af831ffeb$var$switchFrom(activeCall, options = {}) {\n    const replaceHeaders = [\n        `Replaces: ${activeCall.id};to-tag=${activeCall.sipData.fromTag};from-tag=${activeCall.sipData.toTag}`,\n        \"RC-call-type: replace\"\n    ];\n    const [toNumber, fromNumber] = activeCall.direction === \"Outbound\" ? [\n        activeCall.to,\n        activeCall.from\n    ] : [\n        activeCall.from,\n        activeCall.to\n    ];\n    options.extraHeaders = (options.extraHeaders || []).concat(replaceHeaders);\n    options.fromNumber = options.fromNumber || fromNumber;\n    const inviterOptions = {\n        extraHeaders: options.extraHeaders,\n        sessionDescriptionHandlerOptions: {\n            constraints: options.RTCConstraints || this.constraints\n        }\n    };\n    return this.invite(toNumber, inviterOptions);\n}\n\n\n\n\n\nclass $a0713fbd55f057e2$export$4d703fa87dd9817a {\n    // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n    static dispatchAddTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"addtrack\", {\n            track: track\n        }));\n    }\n    // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n    static dispatchRemoveTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"removetrack\", {\n            track: track\n        }));\n    }\n    /** Logger. */ logger;\n    /** Media stream factory. */ mediaStreamFactory;\n    /** Configuration options. */ sessionDescriptionHandlerConfiguration;\n    /** The local media stream. */ _localMediaStream;\n    /** The remote media stream. */ _remoteMediaStream;\n    /** The data channel. Undefined before created. */ _dataChannel;\n    /** The peer connection. Undefined after SessionDescriptionHandler.close(). */ _peerConnection;\n    /** The peer connection delegate. */ _peerConnectionDelegate;\n    iceGatheringCompletePromise;\n    iceGatheringCompleteTimeoutId;\n    iceGatheringCompleteResolve;\n    iceGatheringCompleteReject;\n    localMediaStreamConstraints;\n    onDataChannel;\n    /**\n   * Constructor\n   * @param logger - A logger\n   * @param mediaStreamFactory - A factory to provide a MediaStream\n   * @param options - Options passed from the SessionDescriptionHandleFactory\n   */ constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration){\n        logger.debug(\"SessionDescriptionHandler.constructor\");\n        this.logger = logger;\n        this.mediaStreamFactory = mediaStreamFactory;\n        this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n        this._localMediaStream = new MediaStream();\n        this._remoteMediaStream = new MediaStream();\n        this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration?.peerConnectionConfiguration);\n        this.initPeerConnectionEventHandlers();\n    }\n    /**\n   * The local media stream currently being sent.\n   *\n   * @remarks\n   * The local media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * local media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */ get localMediaStream() {\n        return this._localMediaStream;\n    }\n    /**\n   * The remote media stream currently being received.\n   *\n   * @remarks\n   * The remote media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * remote media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */ get remoteMediaStream() {\n        return this._remoteMediaStream;\n    }\n    /**\n   * The data channel. Undefined before it is created.\n   */ get dataChannel() {\n        return this._dataChannel;\n    }\n    /**\n   * The peer connection. Undefined if peer connection has closed.\n   *\n   * @remarks\n   * While access to the underlying `RTCPeerConnection` is provided, note that\n   * using methods with modify it may break the operation of this class.\n   * In particular, this class depends on exclusive access to the\n   * event handler properties. If you need access to the peer connection\n   * events, either register for events using `addEventListener()` on\n   * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n   * this `SessionDescriptionHandler`.\n   */ get peerConnection() {\n        return this._peerConnection;\n    }\n    /**\n   * A delegate which provides access to the peer connection event handlers.\n   *\n   * @remarks\n   * Setting the peer connection event handlers directly is not supported\n   * and may break this class. As this class depends on exclusive access\n   * to them, a delegate may be set which provides alternative access to\n   * the event handlers in a fashion which is supported.\n   */ get peerConnectionDelegate() {\n        return this._peerConnectionDelegate;\n    }\n    set peerConnectionDelegate(delegate) {\n        this._peerConnectionDelegate = delegate;\n    }\n    /**\n   * Stop tracks and close peer connection.\n   */ close() {\n        this.logger.debug(\"SessionDescriptionHandler.close\");\n        if (this._peerConnection === undefined) return;\n        this._peerConnection.getReceivers().forEach((receiver)=>{\n            receiver.track?.stop();\n        });\n        this._peerConnection.getSenders().forEach((sender)=>{\n            sender.track?.stop();\n        });\n        if (this._dataChannel) this._dataChannel.close();\n        this._peerConnection.close();\n        this._peerConnection = undefined;\n    }\n    /**\n   * Creates an offer or answer.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */ getDescription(options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.getDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options?.onDataChannel;\n        // ICE will restart upon applying an offer created with the iceRestart option\n        const iceRestart = options?.offerOptions?.iceRestart;\n        // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n        const iceTimeout = options?.iceGatheringTimeout === undefined ? this.sessionDescriptionHandlerConfiguration?.iceGatheringTimeout : options?.iceGatheringTimeout;\n        return this.getLocalMediaStream(options).then(()=>this.enableSenderDscp()).then(()=>this.updateDirection(options)).then(()=>this.createDataChannel(options)).then(()=>this.createLocalOfferOrAnswer(options)).then((sessionDescription)=>this.applyModifiers(sessionDescription, modifiers)).then((sessionDescription)=>this.setLocalSessionDescription(sessionDescription)).then(()=>this.waitForIceGatheringComplete(iceRestart, iceTimeout)).then(()=>this.getLocalSessionDescription()).then((sessionDescription)=>{\n            return {\n                body: sessionDescription.sdp,\n                contentType: \"application/sdp\"\n            };\n        }).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.getDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n   * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n   * @param contentType - The content type that is in the SIP Message.\n   */ hasDescription(contentType) {\n        this.logger.debug(\"SessionDescriptionHandler.hasDescription\");\n        return contentType === \"application/sdp\";\n    }\n    /**\n   * Send DTMF via RTP (RFC 4733).\n   * Returns true if DTMF send is successful, false otherwise.\n   * @param tones - A string containing DTMF digits.\n   * @param options - Options object to be used by sendDtmf.\n   */ sendDtmf(tones, options) {\n        this.logger.debug(\"SessionDescriptionHandler.sendDtmf\");\n        if (this._peerConnection === undefined) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - peer connection closed\");\n            return false;\n        }\n        const senders = this._peerConnection.getSenders();\n        if (senders.length === 0) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no senders\");\n            return false;\n        }\n        const dtmfSender = senders[0].dtmf;\n        if (!dtmfSender) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no DTMF sender\");\n            return false;\n        }\n        const duration = options?.duration;\n        const interToneGap = options?.interToneGap;\n        try {\n            dtmfSender.insertDTMF(tones, duration, interToneGap);\n        } catch (e) {\n            this.logger.error(e);\n            return false;\n        }\n        this.logger.log(\"SessionDescriptionHandler.sendDtmf sent via RTP: \" + tones.toString());\n        return true;\n    }\n    /**\n   * Sets an offer or answer.\n   * @param sdp - The session description.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */ setDescription(sdp, options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.setDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options?.onDataChannel;\n        // SDP type\n        const type = this._peerConnection.signalingState === \"have-local-offer\" ? \"answer\" : \"offer\";\n        return this.getLocalMediaStream(options).then(()=>this.applyModifiers({\n                sdp: sdp,\n                type: type\n            }, modifiers)).then((sessionDescription)=>this.setRemoteSessionDescription(sessionDescription)).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.setDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n   * Applies modifiers to SDP prior to setting the local or remote description.\n   * @param sdp - SDP to modify.\n   * @param modifiers - Modifiers to apply.\n   */ applyModifiers(sdp, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.applyModifiers\");\n        if (!modifiers || modifiers.length === 0) return Promise.resolve(sdp);\n        return modifiers.reduce((cur, next)=>cur.then(next), Promise.resolve(sdp)).then((modified)=>{\n            this.logger.debug(\"SessionDescriptionHandler.applyModifiers - modified sdp\");\n            if (!modified.sdp || !modified.type) throw new Error(\"Invalid SDP.\");\n            return {\n                sdp: modified.sdp,\n                type: modified.type\n            };\n        });\n    }\n    /**\n   * Create a data channel.\n   * @remarks\n   * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n   * Only creates a data channel if creating a local offer.\n   * Only if one does not already exist.\n   * @param options - Session description handler options.\n   */ createDataChannel(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // only create a data channel if requested\n        if (options?.dataChannel !== true) return Promise.resolve();\n        // do not create a data channel if we already have one\n        if (this._dataChannel) return Promise.resolve();\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer so create a data channel\n                this.logger.debug(\"SessionDescriptionHandler.createDataChannel - creating data channel\");\n                try {\n                    this._dataChannel = this._peerConnection.createDataChannel(options?.dataChannelLabel || \"\", options?.dataChannelOptions);\n                    if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n                    return Promise.resolve();\n                } catch (error) {\n                    return Promise.reject(error);\n                }\n            case \"have-remote-offer\":\n                return Promise.resolve();\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n   * Depending on current signaling state, create a local offer or answer.\n   * @param options - Session description handler options.\n   */ createLocalOfferOrAnswer(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer\");\n                return this._peerConnection.createOffer(options?.offerOptions);\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer\");\n                return this._peerConnection.createAnswer(options?.answerOptions);\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n   * Get a media stream from the media stream factory and set the local media stream.\n   * @param options - Session description handler options.\n   */ getLocalMediaStream(options) {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalMediaStream\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        let constraints = {\n            ...options?.constraints\n        };\n        // if we already have a local media stream...\n        if (this.localMediaStreamConstraints) {\n            // ignore constraint \"downgrades\"\n            constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n            constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n            // if constraints have not changed, do not get a new media stream\n            if (JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) && JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)) return Promise.resolve();\n        } else // if no constraints have been specified, default to audio for initial media stream\n        if (constraints.audio === undefined && constraints.video === undefined) constraints = {\n            audio: true\n        };\n        this.localMediaStreamConstraints = constraints;\n        return this.mediaStreamFactory(constraints, this).then((mediaStream)=>this.setLocalMediaStream(mediaStream));\n    }\n    /**\n   * Sets the encoding priorty to high for sender track.\n   *\n   */ async enableSenderDscp() {\n        if (!this.sessionDescriptionHandlerConfiguration?.enableDscp) return;\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        for (const sender of this._peerConnection.getSenders().filter((sender)=>sender.track)){\n            const parameters = sender.getParameters();\n            // console.info('getsender params =', parameters);\n            parameters.priority = \"high\";\n            try {\n                await sender.setParameters(parameters);\n            } catch (error) {\n                console.error(`Error while setting encodings parameters for ${sender.track.kind} Track ${sender.track.id}: ${error.message || error.name}`);\n            }\n        }\n    }\n    /**\n   * Sets the peer connection's sender tracks and local media stream tracks.\n   *\n   * @remarks\n   * Only the first audio and video tracks of the provided MediaStream are utilized.\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param stream - Media stream containing tracks to be utilized.\n   */ setLocalMediaStream(stream) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalMediaStream\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const pc = this._peerConnection;\n        const localStream = this._localMediaStream;\n        const trackUpdates = [];\n        const updateTrack = (newTrack)=>{\n            const kind = newTrack.kind;\n            if (kind !== \"audio\" && kind !== \"video\") throw new Error(`Unknown new track kind ${kind}.`);\n            const sender = pc.getSenders().find((sender)=>sender.track && sender.track.kind === kind);\n            if (sender) trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n                resolve();\n            }).then(()=>sender.replaceTrack(newTrack).then(()=>{\n                    const oldTrack = localStream.getTracks().find((localTrack)=>localTrack.kind === kind);\n                    if (oldTrack) {\n                        oldTrack.stop();\n                        localStream.removeTrack(oldTrack);\n                        $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(localStream, oldTrack);\n                    }\n                    localStream.addTrack(newTrack);\n                    $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n                }).catch((error)=>{\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`);\n                    throw error;\n                })));\n            else trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n                resolve();\n            }).then(()=>{\n                // Review: could make streamless tracks a configurable option?\n                // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n                try {\n                    pc.addTrack(newTrack, localStream);\n                } catch (error) {\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n                    throw error;\n                }\n                localStream.addTrack(newTrack);\n                $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n            }));\n        };\n        // update peer connection audio tracks\n        const audioTracks = stream.getAudioTracks();\n        if (audioTracks.length) updateTrack(audioTracks[0]);\n        // update peer connection video tracks\n        const videoTracks = stream.getVideoTracks();\n        if (videoTracks.length) updateTrack(videoTracks[0]);\n        return trackUpdates.reduce((p, x)=>p.then(()=>x), Promise.resolve());\n    }\n    /**\n   * Gets the peer connection's local session description.\n   */ getLocalSessionDescription() {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = this._peerConnection.localDescription;\n        if (!sdp) return Promise.reject(new Error(\"Failed to get local session description\"));\n        return Promise.resolve(sdp);\n    }\n    /**\n   * Sets the peer connection's local session description.\n   * @param sessionDescription - sessionDescription The session description.\n   */ setLocalSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        return this._peerConnection.setLocalDescription(sessionDescription);\n    }\n    /**\n   * Sets the peer connection's remote session description.\n   * @param sessionDescription - The session description.\n   */ setRemoteSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = sessionDescription.sdp;\n        let type;\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable assume this is a remote offer\n                type = \"offer\";\n                break;\n            case \"have-local-offer\":\n                // if we made an offer, assume this is a remote answer\n                type = \"answer\";\n                break;\n            case \"have-local-pranswer\":\n            case \"have-remote-offer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        if (!sdp) {\n            this.logger.error(\"SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp\");\n            return Promise.reject(new Error(\"SDP is undefined\"));\n        }\n        return this._peerConnection.setRemoteDescription({\n            sdp: sdp,\n            type: type\n        });\n    }\n    /**\n   * Sets a remote media stream track.\n   *\n   * @remarks\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param track - Media stream track to be utilized.\n   */ setRemoteTrack(track) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteTrack\");\n        const remoteStream = this._remoteMediaStream;\n        if (remoteStream.getTrackById(track.id)) this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n        else if (track.kind === \"audio\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getAudioTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        } else if (track.kind === \"video\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getVideoTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        }\n    }\n    /**\n   * Depending on the current signaling state and the session hold state, update transceiver direction.\n   * @param options - Session description handler options.\n   */ updateDirection(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // 4.2.3.  setDirection\n        //\n        //    The setDirection method sets the direction of a transceiver, which\n        //    affects the direction property of the associated \"m=\" section on\n        //    future calls to createOffer and createAnswer.  The permitted values\n        //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n        //    mirroring the identically named direction attributes defined in\n        //    [RFC4566], Section 6.\n        //\n        //    When creating offers, the transceiver direction is directly reflected\n        //    in the output, even for re-offers.  When creating answers, the\n        //    transceiver direction is intersected with the offered direction, as\n        //    explained in Section 5.3 below.\n        //\n        //    Note that while setDirection sets the direction property of the\n        //    transceiver immediately (Section 4.2.4), this property does not\n        //    immediately affect whether the transceiver's RtpSender will send or\n        //    its RtpReceiver will receive.  The direction in effect is represented\n        //    by the currentDirection property, which is only updated when an\n        //    answer is applied.\n        //\n        // 4.2.4.  direction\n        //\n        //    The direction property indicates the last value passed into\n        //    setDirection.  If setDirection has never been called, it is set to\n        //    the direction the transceiver was initialized with.\n        //\n        // 4.2.5.  currentDirection\n        //\n        //    The currentDirection property indicates the last negotiated direction\n        //    for the transceiver's associated \"m=\" section.  More specifically, it\n        //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n        //    section in the last applied answer (including provisional answers),\n        //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n        //    For example, if the direction attribute for the associated \"m=\"\n        //    section in a remote answer is \"recvonly\", currentDirection is set to\n        //    \"sendonly\".\n        //\n        //    If an answer that references this transceiver has not yet been\n        //    applied or if the transceiver is stopped, currentDirection is set to\n        //    \"null\".\n        //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n        //\n        // *  A direction attribute, determined by applying the rules regarding\n        //    the offered direction specified in [RFC3264], Section 6.1, and\n        //    then intersecting with the direction of the associated\n        //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n        //    offered as \"sendonly\" and the local transceiver is set to\n        //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n        // https://tools.ietf.org/html/rfc8829#section-5.3.1\n        //\n        // If a stream is offered as sendonly, the corresponding stream MUST be\n        // marked as recvonly or inactive in the answer.  If a media stream is\n        // listed as recvonly in the offer, the answer MUST be marked as\n        // sendonly or inactive in the answer.  If an offered media stream is\n        // listed as sendrecv (or if there is no direction attribute at the\n        // media or session level, in which case the stream is sendrecv by\n        // default), the corresponding stream in the answer MAY be marked as\n        // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n        // stream is listed as inactive, it MUST be marked as inactive in the\n        // answer.\n        // https://tools.ietf.org/html/rfc3264#section-6.1\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting offer direction\");\n                {\n                    // determine the direction to offer given the current direction and hold state\n                    const directionToOffer = (currentDirection)=>{\n                        switch(currentDirection){\n                            case \"inactive\":\n                                return options?.hold ? \"inactive\" : \"recvonly\";\n                            case \"recvonly\":\n                                return options?.hold ? \"inactive\" : \"recvonly\";\n                            case \"sendonly\":\n                                return options?.hold ? \"sendonly\" : \"sendrecv\";\n                            case \"sendrecv\":\n                                return options?.hold ? \"sendonly\" : \"sendrecv\";\n                            case \"stopped\":\n                                return \"stopped\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    };\n                    // set the transceiver direction to the offer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            const offerDirection = directionToOffer(transceiver.direction);\n                            if (transceiver.direction !== offerDirection) transceiver.direction = offerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting answer direction\");\n                // FIXME: This is not the correct way to determine the answer direction as it is only\n                // considering first match in the offered SDP and using that to determine the answer direction.\n                // While that may be fine for our current use cases, it is not a generally correct approach.\n                {\n                    // determine the offered direction\n                    const offeredDirection = (()=>{\n                        const description = this._peerConnection.remoteDescription;\n                        if (!description) throw new Error(\"Failed to read remote offer\");\n                        const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n                        if (searchResult) switch(searchResult[0]){\n                            case \"a=inactive\\r\\n\":\n                                return \"inactive\";\n                            case \"a=recvonly\\r\\n\":\n                                return \"recvonly\";\n                            case \"a=sendonly\\r\\n\":\n                                return \"sendonly\";\n                            case \"a=sendrecv\\r\\n\":\n                                return \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                        return \"sendrecv\";\n                    })();\n                    // determine the answer direction based on the offered direction and our hold state\n                    const answerDirection = (()=>{\n                        switch(offeredDirection){\n                            case \"inactive\":\n                                return \"inactive\";\n                            case \"recvonly\":\n                                return \"sendonly\";\n                            case \"sendonly\":\n                                return options?.hold ? \"inactive\" : \"recvonly\";\n                            case \"sendrecv\":\n                                return options?.hold ? \"sendonly\" : \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    })();\n                    // set the transceiver direction to the answer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            if (transceiver.direction !== \"stopped\" && transceiver.direction !== answerDirection) transceiver.direction = answerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        return Promise.resolve();\n    }\n    /**\n   * Called when ICE gathering completes and resolves any waiting promise.\n   */ iceGatheringComplete() {\n        this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete\");\n        // clear timer if need be\n        if (this.iceGatheringCompleteTimeoutId !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - clearing timeout\");\n            clearTimeout(this.iceGatheringCompleteTimeoutId);\n            this.iceGatheringCompleteTimeoutId = undefined;\n        }\n        // resolve and cleanup promise if need be\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - resolving promise\");\n            this.iceGatheringCompleteResolve?.();\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n    }\n    /**\n   * Wait for ICE gathering to complete.\n   * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n   * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n   */ waitForIceGatheringComplete(restart = false, timeout = 0) {\n        this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // guard already complete\n        if (!restart && this._peerConnection.iceGatheringState === \"complete\") {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - already complete\");\n            return Promise.resolve();\n        }\n        // only one may be waiting, reject any prior\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise\");\n            this.iceGatheringCompleteReject?.(new Error(\"Promise superseded.\"));\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n        this.iceGatheringCompletePromise = new Promise((resolve, reject)=>{\n            this.iceGatheringCompleteResolve = resolve;\n            this.iceGatheringCompleteReject = reject;\n            if (timeout > 0) {\n                this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in \" + timeout);\n                this.iceGatheringCompleteTimeoutId = setTimeout(()=>{\n                    this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout\");\n                    this.iceGatheringComplete();\n                }, timeout);\n            }\n        });\n        return this.iceGatheringCompletePromise;\n    }\n    /**\n   * Initializes the peer connection event handlers\n   */ initPeerConnectionEventHandlers() {\n        this.logger.debug(\"SessionDescriptionHandler.initPeerConnectionEventHandlers\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const peerConnection = this._peerConnection;\n        peerConnection.onconnectionstatechange = (event)=>{\n            const newState = peerConnection.connectionState;\n            this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n            if (this._peerConnectionDelegate?.onconnectionstatechange) this._peerConnectionDelegate.onconnectionstatechange(event);\n        };\n        peerConnection.ondatachannel = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.ondatachannel\");\n            this._dataChannel = event.channel;\n            if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n            if (this._peerConnectionDelegate?.ondatachannel) this._peerConnectionDelegate.ondatachannel(event);\n        };\n        peerConnection.onicecandidate = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.onicecandidate\");\n            if (this._peerConnectionDelegate?.onicecandidate) this._peerConnectionDelegate.onicecandidate(event);\n        };\n        peerConnection.onicecandidateerror = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.onicecandidateerror\");\n            if (this._peerConnectionDelegate?.onicecandidateerror) this._peerConnectionDelegate.onicecandidateerror(event);\n        };\n        peerConnection.oniceconnectionstatechange = (event)=>{\n            const newState = peerConnection.iceConnectionState;\n            this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n            if (this._peerConnectionDelegate?.oniceconnectionstatechange) this._peerConnectionDelegate.oniceconnectionstatechange(event);\n        };\n        peerConnection.onicegatheringstatechange = (event)=>{\n            const newState = peerConnection.iceGatheringState;\n            this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n            if (newState === \"complete\") this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n            if (this._peerConnectionDelegate?.onicegatheringstatechange) this._peerConnectionDelegate.onicegatheringstatechange(event);\n        };\n        peerConnection.onnegotiationneeded = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.onnegotiationneeded\");\n            if (this._peerConnectionDelegate?.onnegotiationneeded) this._peerConnectionDelegate.onnegotiationneeded(event);\n        };\n        peerConnection.onsignalingstatechange = (event)=>{\n            const newState = peerConnection.signalingState;\n            this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n            if (this._peerConnectionDelegate?.onsignalingstatechange) this._peerConnectionDelegate.onsignalingstatechange(event);\n        };\n        // onstatsended is no longer a part of PeerConnection as per the specs so removing it\n        // peerConnection.onstatsended = (event): void => {\n        //     this.logger.debug(`SessionDescriptionHandler.onstatsended`);\n        //     if (this._peerConnectionDelegate?.onstatsended) {\n        //         this._peerConnectionDelegate.onstatsended(event);\n        //     }\n        // };\n        peerConnection.ontrack = (event)=>{\n            const kind = event.track.kind;\n            const enabled = event.track.enabled ? \"enabled\" : \"disabled\";\n            this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n            this.setRemoteTrack(event.track);\n            if (this._peerConnectionDelegate?.ontrack) this._peerConnectionDelegate.ontrack(event);\n        };\n    }\n}\nfunction $a0713fbd55f057e2$export$4ffaee600e913aea() {\n    const config = {\n        bundlePolicy: \"balanced\",\n        certificates: undefined,\n        iceCandidatePoolSize: 0,\n        iceServers: [\n            {\n                urls: \"stun:stun.l.google.com:19302\"\n            }\n        ],\n        iceTransportPolicy: \"all\",\n        rtcpMuxPolicy: \"require\"\n    };\n    return config;\n}\nfunction $a0713fbd55f057e2$export$1ffd34e85fb79026() {\n    return (constraints)=>{\n        // if no audio or video, return a media stream without tracks\n        if (!constraints.audio && !constraints.video) return Promise.resolve(new MediaStream());\n        // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n        // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n        // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n        // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n        if (navigator.mediaDevices === undefined) return Promise.reject(new Error(\"Media devices not available in insecure contexts.\"));\n        return navigator.mediaDevices.getUserMedia(constraints);\n    };\n}\nconst $a0713fbd55f057e2$export$32088792e7a5fd8d = (session, options)=>{\n    const mediaStreamFactory = $a0713fbd55f057e2$export$1ffd34e85fb79026();\n    // make sure we allow `0` to be passed in so timeout can be disabled\n    const iceGatheringTimeout = options?.iceGatheringTimeout !== undefined ? options?.iceGatheringTimeout : 5000;\n    // merge passed factory options into default session description configuration\n    const sessionDescriptionHandlerConfiguration = {\n        iceGatheringTimeout: iceGatheringTimeout,\n        enableDscp: options.enableDscp,\n        peerConnectionConfiguration: {\n            ...$a0713fbd55f057e2$export$4ffaee600e913aea(),\n            ...options?.peerConnectionConfiguration\n        }\n    };\n    const logger = session.userAgent.getLogger(\"sip.SessionDescriptionHandler\");\n    return new $a0713fbd55f057e2$export$4d703fa87dd9817a(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n};\n\n\nvar $8f13b60c0ee5b277$exports = {};\n$8f13b60c0ee5b277$exports = JSON.parse('{\"name\":\"ringcentral-web-phone\",\"version\":\"1.0.3\",\"homepage\":\"https://github.com/ringcentral/ringcentral-web-phone\",\"bugs\":{\"url\":\"https://github.com/ringcentral/ringcentral-web-phone/issues\"},\"repository\":{\"type\":\"git\",\"url\":\"git://github.com/ringcentral/ringcentral-web-phone.git\"},\"license\":\"MIT\",\"author\":{\"name\":\"RingCentral, Inc.\",\"email\":\"devsupport@ringcentral.com\"},\"contributors\":[{\"name\":\"Kirill Konshin\"},{\"name\":\"Elias Sun\"},{\"name\":\"Vyshakh Babji\"},{\"name\":\"Yatin Gera\"},{\"name\":\"Tyler Liu\"},{\"name\":\"Embbnux Ji\"}],\"main\":\"./lib/src/index.js\",\"types\":\"./lib/src/index.d.ts\",\"scripts\":{\"build\":\"rm -rf lib && yarn tsc && rm -rf docs && parcel build demo/index.html demo/callback.html --dist-dir docs --public-url ./\",\"lint\":\"eslint --fix \\'**/*.{ts,tsx,js,jsx}\\' && prettier --write . && sort-package-json\",\"serve\":\"rm -rf .parcel-cache && parcel demo/index.html demo/callback.html --dist-dir docs\",\"test\":\"jest src/mediaStreams.spec.ts\",\"test2\":\"NODE_OPTIONS=--require=dotenv-override-true/config playwright test test/index.spec.ts --workers=1\",\"test:coverage\":\"cat .coverage/lcov.info | coveralls -v\"},\"dependencies\":{\"sip.js\":\"^0.21.2\"},\"devDependencies\":{\"@faker-js/faker\":\"^8.4.1\",\"@playwright/test\":\"^1.44.1\",\"@rc-ex/core\":\"^1.3.15\",\"@ringcentral/sdk\":\"^5.0.1\",\"@types/jest\":\"^29.5.12\",\"@types/node\":\"^20.14.2\",\"@typescript-eslint/eslint-plugin\":\"^7.13.0\",\"@typescript-eslint/parser\":\"^7.13.0\",\"bootstrap\":\"3.4.1\",\"buffer\":\"^6.0.3\",\"coveralls\":\"^3.1.1\",\"crypto-browserify\":\"^3.12.0\",\"dotenv-override-true\":\"^6.2.2\",\"eslint\":\"8.57.0\",\"eslint-config-alloy\":\"^5.1.2\",\"eslint-config-prettier\":\"^9.1.0\",\"eslint-plugin-jest\":\"^28.6.0\",\"eslint-plugin-prettier\":\"^5.1.3\",\"events\":\"^3.3.0\",\"fix-esm\":\"^1.0.1\",\"http-server\":\"^14.1.1\",\"jest\":\"^29.7.0\",\"jquery\":\"^3.7.1\",\"parcel\":\"^2.12.0\",\"prettier\":\"^3.3.1\",\"process\":\"^0.11.10\",\"querystring-es3\":\"^0.2.1\",\"sort-package-json\":\"^2.10.0\",\"stream-browserify\":\"^3.0.0\",\"ts-jest\":\"^29.1.4\",\"ts-node\":\"^10.9.2\",\"ttpt\":\"^0.9.6\",\"typescript\":\"^5.4.5\",\"wait-for-async\":\"^0.6.1\",\"yarn-upgrade-all\":\"^0.7.2\"},\"preferGlobal\":false,\"targets\":{\"main\":false,\"module\":false,\"types\":false,\"browser\":false},\"yarn-upgrade-all\":{\"ignore\":[\"bootstrap\",\"eslint\"]}}');\n\n\nconst $b4e14b6b8da86996$var$version = (0, (/*@__PURE__*/$parcel$interopDefault($8f13b60c0ee5b277$exports))).version;\nconst $b4e14b6b8da86996$var$defaultWebPhoneOptions = {\n    autoStop: true,\n    builtinEnabled: true,\n    earlyMedia: false,\n    enableDefaultModifiers: true,\n    enableDscp: false,\n    iceTransportPolicy: \"all\",\n    maxReconnectionAttemptsNoBackup: 15,\n    maxReconnectionAttemptsWithBackup: 10,\n    mediaConstraints: (0, $9ecda7333d28e490$export$5ba7149a85c7d1a0),\n    modifiers: [],\n    // FIXME: This should be in seconds since every other config is in seconds\n    qosCollectInterval: 5000,\n    reconnectionTimeoutNoBackup: 5,\n    reconnectionTimeoutWithBackup: 4,\n    transportServers: [],\n    turnServers: [],\n    uuid: (0, $df5bef30413a053b$export$31b40729666a4ae0)(),\n    uuidKey: $9ecda7333d28e490$export$1a2a4672f2aa1318\n};\nclass $b4e14b6b8da86996$export$2e2bcd8739ae039 {\n    /** WebPhone version */ static version = $b4e14b6b8da86996$var$version;\n    /** Utility function to generate uuid */ static uuid = (0, $df5bef30413a053b$export$31b40729666a4ae0);\n    /** Utility function to extend object */ static extend = (0, $df5bef30413a053b$export$8b58be045bf06082);\n    static MediaStreams = (0, $557a2ee3af030028$export$2e2bcd8739ae039);\n    static MediaStreamsImpl = (0, $557a2ee3af030028$export$2f9419ea90201913);\n    /** Sip Info received from the registration endpoint */ sipInfo;\n    /** Key that will be used to save uuid in localStorage */ uuidKey;\n    /** Name used in user agent string */ appName;\n    /** Version used in user agent string */ appVersion;\n    /** WebPhoneUserAgent instance */ userAgent;\n    /**\n   * TODO: include 'WebPhone' for all apps other than Chrome and Glip\n   * TODO: parse wsservers from new api spec\n   */ // eslint-disable-next-line complexity\n    constructor(registrationData = {}, _options = {}){\n        const options = {\n            ...$b4e14b6b8da86996$var$defaultWebPhoneOptions,\n            ..._options\n        };\n        this.sipInfo = registrationData.sipInfo;\n        if (Array.isArray(this.sipInfo)) this.sipInfo = this.sipInfo[0];\n        this.uuidKey = options.uuidKey;\n        this.appName = options.appName;\n        this.appVersion = options.appVersion;\n        const id = options.uuid;\n        localStorage.setItem(this.uuidKey, id);\n        const uaMatch = navigator.userAgent.match(/\\((.*?)\\)/);\n        const appClientOs = uaMatch === null ? \"\" : uaMatch[1].replace(/[^a-zA-Z0-9.:_]+/g, \"-\");\n        const userAgentString = (this.appName ? this.appName + (this.appVersion ? \"/\" + this.appVersion : \"\") + \" \" : \"\") + (appClientOs ? appClientOs : \"\") + ` RCWEBPHONE/${$b4e14b6b8da86996$export$2e2bcd8739ae039.version}`;\n        const modifiers = options.modifiers;\n        if (!options.enableDefaultModifiers) {\n            modifiers.push((0, $71514f66503c648c$exports).stripG722);\n            modifiers.push((0, $71514f66503c648c$exports).stripTcpCandidates);\n        }\n        if (options.enableMidLinesInSDP) modifiers.push((0, $71514f66503c648c$exports).addMidLines);\n        const sdpSemantics = options.enablePlanB ? \"plan-b\" : \"unified-plan\";\n        const stunServers = options.stunServers || (0, $9ecda7333d28e490$export$40da5b911536ffbf);\n        const iceTransportPolicy = options.iceTransportPolicy;\n        let iceServers = [];\n        if (options.enableTurnServers) {\n            iceServers = options.turnServers.map((url)=>({\n                    urls: url\n                }));\n            options.iceCheckingTimeout = options.iceCheckingTimeout || 2000;\n        }\n        iceServers = [\n            ...iceServers,\n            ...stunServers.map((_url)=>{\n                const url = !/^(stun:)/.test(_url) ? `stun:${_url}` : _url;\n                return {\n                    urls: url\n                };\n            })\n        ];\n        const sessionDescriptionHandlerFactoryOptions = options.sessionDescriptionHandlerFactoryOptions || {\n            iceGatheringTimeout: options.iceCheckingTimeout || 500,\n            enableDscp: options.enableDscp,\n            peerConnectionConfiguration: {\n                iceServers: iceServers,\n                iceTransportPolicy: iceTransportPolicy,\n                sdpSemantics: sdpSemantics\n            }\n        };\n        sessionDescriptionHandlerFactoryOptions.enableDscp = !!options.enableDscp;\n        options.modifiers = modifiers;\n        const browserUa = navigator.userAgent.toLowerCase();\n        if (browserUa.includes(\"firefox\") && !browserUa.includes(\"chrome\")) // FIXME: alwaysAcquireMediaFirst has been removed from SIP.js. Is it the same as earlyMedia?\n        options.earlyMedia = true;\n        const sessionDescriptionHandlerFactory = options.sessionDescriptionHandlerFactory || (0, $a0713fbd55f057e2$export$32088792e7a5fd8d);\n        const sipErrorCodes = registrationData.sipErrorCodes?.length ? registrationData.sipErrorCodes : (0, $9ecda7333d28e490$export$483a720d1bace4cd);\n        let reconnectionTimeout = options.reconnectionTimeoutWithBackup;\n        let maxReconnectionAttempts = options.maxReconnectionAttemptsWithBackup;\n        if (this.sipInfo.outboundProxy && this.sipInfo.transport) {\n            options.transportServers.push({\n                uri: this.sipInfo.transport.toLowerCase() + \"://\" + this.sipInfo.outboundProxy\n            });\n            reconnectionTimeout = options.reconnectionTimeoutNoBackup;\n            maxReconnectionAttempts = options.maxReconnectionAttemptsNoBackup;\n        }\n        if (this.sipInfo.outboundProxyBackup && this.sipInfo.transport) options.transportServers.push({\n            uri: this.sipInfo.transport.toLowerCase() + \"://\" + this.sipInfo.outboundProxyBackup\n        });\n        options.reconnectionTimeout = options.reconnectionTimeout || reconnectionTimeout;\n        options.maxReconnectionAttempts = options.maxReconnectionAttempts || maxReconnectionAttempts;\n        const transportServer = options.transportServers.length ? options.transportServers[0].uri : \"\";\n        const configuration = {\n            uri: (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${this.sipInfo.username}@${this.sipInfo.domain}`),\n            transportOptions: {\n                server: transportServer,\n                traceSip: true,\n                connectionTimeout: 5,\n                keepAliveDebounce: options.keepAliveDebounce,\n                keepAliveInterval: options.keepAliveInterval\n            },\n            // WebPhoneTransport will handle reconnection.\n            reconnectionAttempts: 0,\n            authorizationUsername: this.sipInfo.authorizationId,\n            authorizationPassword: this.sipInfo.password,\n            logLevel: (0, $bb2da993b0fb58b9$export$7dc82a261720bb19)[options.logLevel] || (0, $9ecda7333d28e490$export$731d8a9cb69e4934),\n            logBuiltinEnabled: options.builtinEnabled,\n            logConnector: options.connector || undefined,\n            userAgentString: userAgentString,\n            sessionDescriptionHandlerFactoryOptions: sessionDescriptionHandlerFactoryOptions,\n            sessionDescriptionHandlerFactory: sessionDescriptionHandlerFactory,\n            allowLegacyNotifications: true\n        };\n        options.sipErrorCodes = sipErrorCodes;\n        options.switchBackInterval = this.sipInfo.switchBackInterval;\n        this.userAgent = (0, $049fac7af831ffeb$export$fa697dee51767d8e)(configuration, this.sipInfo, options, id);\n    }\n}\n\n\nvar $7d07e4d4306c7f9a$exports = {};\n$7d07e4d4306c7f9a$exports = new URL(\"incoming.4df5d2c2.ogg\", import.meta.url).toString();\n\n\nvar $bba1c2c9bd125e39$exports = {};\n$bba1c2c9bd125e39$exports = new URL(\"outgoing.32ff67a1.ogg\", import.meta.url).toString();\n\n\n$parcel$global.jQuery = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)));\n\n(parcelRequire(\"2yR94\"));\n(0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(()=>{\n    let sdk;\n    let platform;\n    let webPhone;\n    let logLevel = 0;\n    let extension;\n    let primaryNumber;\n    const $app = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#app\");\n    const $loginTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-login\");\n    const $authFlowTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-auth-flow\");\n    const $callTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-call\");\n    const $incomingTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-incoming\");\n    const $acceptedTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-accepted\");\n    const remoteVideoElement = document.getElementById(\"remoteVideo\");\n    const localVideoElement = document.getElementById(\"localVideo\");\n    let outboundCall = true;\n    let confSessionId = \"\";\n    /**\n   * @param {jQuery|HTMLElement} $tpl\n   * @return {jQuery|HTMLElement}\n   */ function cloneTemplate($tpl) {\n        return (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))($tpl.html());\n    }\n    function login(server, clientId, clientSecret, jwtToken, ll) {\n        sdk = new (0, $9fvPZ.SDK)({\n            clientId: clientId,\n            clientSecret: clientSecret,\n            server: server\n        });\n        platform = sdk.platform();\n        platform.login({\n            jwt: jwtToken\n        }).then(()=>{\n            return postLogin(server, clientId, clientSecret, jwtToken, ll);\n        }).catch((e)=>{\n            console.error(e.stack || e);\n        });\n    }\n    // Redirect function\n    function show3LeggedLogin(server, clientId, clientSecret, ll) {\n        const $redirectUri = decodeURIComponent(window.location.href.split(\"login\", 1) + \"callback.html\");\n        console.log(\"The redirect uri value :\", $redirectUri);\n        sdk = new (0, $9fvPZ.SDK)({\n            clientId: clientId,\n            clientSecret: clientSecret,\n            server: server,\n            redirectUri: $redirectUri\n        });\n        platform = sdk.platform();\n        const loginUrl = platform.loginUrl();\n        platform.loginWindow({\n            url: loginUrl\n        }) // this method also allows to supply more options to control window position\n        .then(platform.login.bind(platform)).then(()=>{\n            return postLogin(server, clientId, clientSecret, \"\", ll);\n        }).catch((e)=>{\n            console.error(e.stack || e);\n        });\n    }\n    function postLogin(server, clientId, clientSecret, jwtToken, ll) {\n        logLevel = ll;\n        localStorage.setItem(\"webPhoneServer\", server || \"\");\n        localStorage.setItem(\"webPhoneclientId\", clientId || \"\");\n        localStorage.setItem(\"webPhoneclientSecret\", clientSecret || \"\");\n        if (jwtToken && jwtToken.length > 0) localStorage.setItem(\"webPhoneJwtToken\", jwtToken);\n        localStorage.setItem(\"webPhoneLogLevel\", (logLevel || 0).toString());\n        return platform.get(\"/restapi/v1.0/account/~/extension/~\").then((res)=>res.json()).then((res)=>{\n            extension = res;\n            console.log(\"Extension info\", extension);\n            return platform.get(\"/restapi/v1.0/account/~/extension/~/phone-number\");\n        }).then((res)=>res.json()).then((r)=>{\n            primaryNumber = r.records.filter((r)=>r.primary === true)[0].phoneNumber;\n        }).then(()=>{\n            return platform.post(\"/restapi/v1.0/client-info/sip-provision\", {\n                sipInfo: [\n                    {\n                        transport: \"WSS\"\n                    }\n                ]\n            });\n        }).then((res)=>res.json()).then(register).then(makeCallForm).catch((e)=>{\n            console.error(\"Error in main promise chain\");\n            console.error(e.stack || e);\n        });\n    }\n    function register(data) {\n        const webPhoneConfig = {\n            enableDscp: true,\n            clientId: localStorage.getItem(\"webPhoneclientId\"),\n            audioHelper: {\n                enabled: true,\n                incoming: (0, (/*@__PURE__*/$parcel$interopDefault($7d07e4d4306c7f9a$exports))),\n                outgoing: (0, (/*@__PURE__*/$parcel$interopDefault($bba1c2c9bd125e39$exports)))\n            },\n            logLevel: logLevel,\n            appName: \"WebPhoneDemo\",\n            appVersion: \"1.0.0\",\n            media: {\n                remote: remoteVideoElement,\n                local: localVideoElement\n            },\n            enableQos: true,\n            enableMediaReportLogging: true\n        };\n        const urlParams = new URLSearchParams(window.location.search);\n        if (urlParams.has(\"customHeader\")) webPhoneConfig.defaultHeaders = [\n            \"P-Custom-Header: CustomValue\"\n        ];\n        webPhone = new (0, $b4e14b6b8da86996$export$2e2bcd8739ae039)(data, webPhoneConfig);\n        $parcel$global.webPhone = webPhone; // for debugging\n        webPhone.userAgent.audioHelper.setVolume(0.3);\n        webPhone.userAgent.on(\"invite\", onInvite);\n        webPhone.userAgent.on(\"connecting\", ()=>{\n            console.log(\"UA connecting\");\n        });\n        webPhone.userAgent.on(\"connected\", ()=>{\n            console.log(\"UA Connected\");\n        });\n        webPhone.userAgent.on(\"disconnected\", ()=>{\n            console.log(\"UA Disconnected\");\n        });\n        webPhone.userAgent.on(\"registered\", ()=>{\n            console.log(\"UA Registered\");\n        });\n        webPhone.userAgent.on(\"unregistered\", ()=>{\n            console.log(\"UA Unregistered\");\n        });\n        webPhone.userAgent.on(\"registrationFailed\", function() {\n            console.log(\"UA RegistrationFailed\", arguments);\n        });\n        webPhone.userAgent.on(\"message\", function() {\n            console.log(\"UA Message\", arguments);\n        });\n        webPhone.userAgent.transport.on(\"switchBackProxy\", ()=>{\n            console.log(\"switching back to primary outbound proxy\");\n            webPhone.userAgent.transport.reconnect();\n        });\n        webPhone.userAgent.transport.on(\"closed\", ()=>{\n            console.log(\"WebSocket closed.\");\n        });\n        webPhone.userAgent.transport.on(\"transportError\", ()=>{\n            console.log(\"WebSocket transportError occured\");\n        });\n        webPhone.userAgent.transport.on(\"wsConnectionError\", ()=>{\n            console.log(\"WebSocket wsConnectionError occured\");\n        });\n        return webPhone;\n    }\n    function onInvite(session) {\n        const $modal = cloneTemplate($incomingTemplate).modal({\n            backdrop: \"static\"\n        });\n        session.stateChange.addListener((newState)=>{\n            switch(newState){\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                    console.log(\"Initial\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                    console.log(\"Establishing\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                    console.log(\"Established\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                    console.log(\"Terminating\");\n                    $modal.modal(\"hide\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                    console.log(\"Terminated\");\n                    $modal.modal(\"hide\");\n                    break;\n            }\n        });\n        outboundCall = false;\n        console.log(\"EVENT: Invite\", session.request);\n        console.log(\"To\", session.request.to.displayName, session.request.to.friendlyName);\n        console.log(\"From\", session.request.from.displayName, session.request.from.friendlyName);\n        if (session.request.headers[\"Alert-Info\"] && session.request.headers[\"Alert-Info\"][0].raw === \"Auto Answer\") session.accept().then(()=>{\n            onAccepted(session);\n        }).catch((e)=>{\n            console.error(\"Accept failed\", e.stack || e);\n        });\n        else {\n            $modal.find(\".answer\").on(\"click\", ()=>{\n                $modal.find(\".before-answer\").css(\"display\", \"none\");\n                $modal.find(\".answered\").css(\"display\", \"\");\n                session.accept().then(()=>{\n                    $modal.modal(\"hide\");\n                    onAccepted(session);\n                }).catch((e)=>{\n                    console.error(\"Accept failed\", e.stack || e);\n                });\n            });\n            $modal.find(\".decline\").on(\"click\", ()=>{\n                session.reject();\n                $modal.modal(\"hide\");\n            });\n            $modal.find(\".toVoicemail\").on(\"click\", ()=>{\n                session.toVoicemail();\n                $modal.modal(\"hide\");\n            });\n            $modal.find(\".forward-form\").on(\"submit\", (e)=>{\n                e.preventDefault();\n                e.stopPropagation();\n                session.forward($modal.find(\"input[name=forward]\").val().trim()).then(()=>{\n                    console.log(\"Forwarded\");\n                    $modal.modal(\"hide\");\n                }).catch((e2)=>{\n                    console.error(\"Forward failed\", e2.stack || e2);\n                });\n            });\n            $modal.find(\".reply-form\").on(\"submit\", (e)=>{\n                e.preventDefault();\n                e.stopPropagation();\n                session.replyWithMessage({\n                    replyType: 0,\n                    replyText: $modal.find(\"input[name=reply]\").val()\n                }).then(()=>{\n                    console.log(\"Replied\");\n                    $modal.modal(\"hide\");\n                }).catch((e2)=>{\n                    console.error(\"Reply failed\", e2.stack || e2);\n                });\n            });\n        }\n    }\n    const activeCallInfoTemplate = ()=>({\n            id: \"\",\n            from: \"\",\n            to: \"\",\n            direction: \"\",\n            sipData: {\n                toTag: \"\",\n                fromTag: \"\"\n            }\n        });\n    function captureActiveCallInfo(session) {\n        const direction = outboundCall ? \"Outbound\" : \"Inbound\";\n        const activeCallInfo = activeCallInfoTemplate();\n        activeCallInfo.from = session.request.from.uri.user;\n        activeCallInfo.to = session.request.to.uri.user;\n        activeCallInfo.direction = direction;\n        activeCallInfo.id = session.dialog.id.callId;\n        activeCallInfo.sipData.fromTag = session.dialog.remoteTag;\n        activeCallInfo.sipData.toTag = session.dialog.localTag;\n        if (!localStorage.getItem(\"activeCallInfo\")) localStorage.setItem(\"activeCallInfo\", JSON.stringify(activeCallInfo));\n    }\n    function onAccepted(session) {\n        console.log(\"EVENT: Accepted\", session.request);\n        console.log(\"To\", session.request.to.displayName, session.request.to.friendlyName);\n        console.log(\"From\", session.request.from.displayName, session.request.from.friendlyName);\n        const $modal = cloneTemplate($acceptedTemplate).modal();\n        const $info = $modal.find(\".info\").eq(0);\n        const $dtmf = $modal.find(\"input[name=dtmf]\").eq(0);\n        const $transfer = $modal.find(\"input[name=transfer]\").eq(0);\n        const $flip = $modal.find(\"input[name=flip]\").eq(0);\n        const interval = setInterval(()=>{\n            const time = session.startTime ? Math.round((Date.now() - session.startTime) / 1000) + \"s\" : \"Ringing\";\n            $info.text(\"time: \" + time + \"\\nstartTime: \" + JSON.stringify(session.startTime, null, 2) + \"\\n\");\n        }, 1000);\n        function closeModal() {\n            clearInterval(interval);\n            $modal.modal(\"hide\");\n        }\n        $modal.find(\".increase-volume\").on(\"click\", ()=>{\n            session.userAgent.audioHelper.setVolume((session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) + 0.1);\n        });\n        $modal.find(\".decrease-volume\").on(\"click\", ()=>{\n            session.userAgent.audioHelper.setVolume((session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) - 0.1);\n        });\n        $modal.find(\".mute\").on(\"click\", ()=>{\n            session.mute();\n        });\n        $modal.find(\".unmute\").on(\"click\", ()=>{\n            session.unmute();\n        });\n        $modal.find(\".hold\").on(\"click\", ()=>{\n            session.hold().then(()=>{\n                console.log(\"Holding\");\n            }).catch((e)=>{\n                console.error(\"Holding failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".unhold\").on(\"click\", ()=>{\n            session.unhold().then(()=>{\n                console.log(\"UnHolding\");\n            }).catch((e)=>{\n                console.error(\"UnHolding failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".startRecord\").on(\"click\", ()=>{\n            session.startRecord().then(()=>{\n                console.log(\"Recording Started\");\n            }).catch((e)=>{\n                console.error(\"Recording Start failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".stopRecord\").on(\"click\", ()=>{\n            session.stopRecord().then(()=>{\n                console.log(\"Recording Stopped\");\n            }).catch((e)=>{\n                console.error(\"Recording Stop failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".park\").on(\"click\", ()=>{\n            session.park().then(()=>{\n                console.log(\"Parked\");\n            }).catch((e)=>{\n                console.error(\"Park failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".transfer-form\").on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.transfer($transfer.val().trim()).then(()=>{\n                console.log(\"Transferred\");\n                $modal.modal(\"hide\");\n            }).catch((e2)=>{\n                console.error(\"Transfer failed\", e2.stack || e2);\n            });\n        });\n        $modal.find(\".transfer-form button.warm\").on(\"click\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.hold().then(()=>{\n                console.log(\"Placing the call on hold, initiating attended transfer\");\n                const newSession = session.userAgent.invite($transfer.val().trim());\n                newSession.once(\"established\", ()=>{\n                    console.log(\"New call initated. Click Complete to complete the transfer\");\n                    $modal.find(\".transfer-form button.complete\").on(\"click\", ()=>{\n                        session.warmTransfer(newSession).then(()=>{\n                            console.log(\"Warm transfer completed\");\n                        }).catch((e2)=>{\n                            console.error(\"Transfer failed\", e2.stack || e2);\n                        });\n                    });\n                });\n            });\n        });\n        $modal.find(\".flip-form\").on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.flip($flip.val().trim()).then(()=>{\n                console.log(\"Flipped\");\n            }).catch((e2)=>{\n                console.error(\"Flip failed\", e2.stack || e2);\n            });\n            $flip.val(\"\");\n        });\n        $modal.find(\".dtmf-form\").on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.dtmf($dtmf.val().trim());\n            $dtmf.val(\"\");\n        });\n        const $startConfButton = $modal.find(\".startConf\");\n        $startConfButton.on(\"click\", ()=>{\n            initConference();\n        });\n        $modal.find(\".hangup\").on(\"click\", ()=>{\n            session.dispose();\n        });\n        session.stateChange.addListener((newState)=>{\n            switch(newState){\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                    console.log(\"Initial\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                    console.log(\"Establishing\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                    console.log(\"Established\");\n                    captureActiveCallInfo(session);\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                    console.log(\"Terminating\");\n                    closeModal();\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                    console.log(\"Terminated\");\n                    closeModal();\n                    localStorage.setItem(\"activeCallInfo\", \"\");\n                    break;\n            }\n        });\n        session.on(\"refer\", ()=>{\n            console.log(\"Event: Refer\");\n            closeModal();\n        });\n        session.on(\"replaced\", (newSession)=>{\n            console.log(\"Event: Replaced: old session\", session, \"has been replaced with\", newSession);\n            closeModal();\n            onAccepted(newSession);\n        });\n        session.on(\"dtmf\", ()=>{\n            console.log(\"Event: DTMF\");\n        });\n        session.on(\"muted\", ()=>{\n            console.log(\"Event: Muted\");\n        });\n        session.on(\"unmuted\", ()=>{\n            console.log(\"Event: Unmuted\");\n        });\n    }\n    function makeCall(number, homeCountryId) {\n        outboundCall = true;\n        // eslint-disable-next-line no-param-reassign\n        homeCountryId = homeCountryId || extension?.regionalSettings?.homeCountry?.id || null;\n        const session = webPhone.userAgent.invite(number, {\n            fromNumber: primaryNumber,\n            homeCountryId: homeCountryId\n        });\n        onAccepted(session);\n    }\n    function switchCall() {\n        const activeCallItem = JSON.parse(localStorage.getItem(\"activeCallInfo\"));\n        console.log(\"Switching active call to current tab: \", activeCallItem);\n        const session = webPhone.userAgent.switchFrom(activeCallItem, {});\n        onAccepted(session);\n    }\n    let onConference = false;\n    function initConference() {\n        if (!onConference) getPresenceActiveCalls().then((res)=>res.json()).then((response)=>{\n            const partyId = response.activeCalls[0].partyId;\n            const telephonySessionId = response.activeCalls[0].telephonySessionId;\n            getConfVoiceToken().then((voiceToken)=>{\n                startConferenceCall(voiceToken, partyId, telephonySessionId);\n                onConference = true;\n            });\n        });\n        else alert(\"A conference is already in progress\");\n    }\n    function getPresenceActiveCalls() {\n        return platform.get(\"/restapi/v1.0/account/~/extension/~/presence?detailedTelephonyState=true\");\n    }\n    function getConfVoiceToken() {\n        return platform.post(\"/restapi/v1.0/account/~/telephony/conference\", {}).then((res)=>res.json()).then((res)=>{\n            confSessionId = res.session.id;\n            return res.session.voiceCallToken;\n        });\n    }\n    function startConferenceCall(voiceToken, partyId, telephonySessionId) {\n        const session = webPhone.userAgent.invite(voiceToken, {\n            fromNumber: primaryNumber\n        });\n        session.stateChange.addListener((newState)=>{\n            if (newState === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n                onAccepted(session);\n                console.log(\"Conference call started\");\n                bringIn(telephonySessionId, partyId).then((res)=>res.json()).then((response)=>{\n                    console.log(\"Adding call to conference succesful\", response);\n                }).catch((e)=>{\n                    console.error(\"Conference call failed\", e.stack || e);\n                });\n            }\n        });\n    }\n    function bringIn(telephonySessionId, partyId) {\n        const url = \"/restapi/v1.0/account/~/telephony/sessions/\" + confSessionId + \"/parties/bring-in\";\n        return platform.post(url, {\n            telephonySessionId: telephonySessionId,\n            partyId: partyId\n        });\n    }\n    function makeCallForm() {\n        const $form = cloneTemplate($callTemplate);\n        const $number = $form.find(\"input[name=number]\").eq(0);\n        const $homeCountry = $form.find(\"input[name=homeCountry]\").eq(0);\n        const $username = $form.find(\".username\").eq(0);\n        const $logout = $form.find(\".logout\").eq(0);\n        const $switch = $form.find(\".switch\").eq(0);\n        $username.html(\"<dl><dt>Contact</dt><dd>\" + extension.contact.firstName + \" \" + extension.contact.lastName + \"</dd>\" + \"<dt>Company</dt><dd>\" + (extension.contact.company || \"?\") + \"</dd>\" + \"<dt>From Phone Number</dt><dd>\" + primaryNumber + \"</dd>\" + \"</dl>\");\n        $logout.on(\"click\", (e)=>{\n            webPhone.userAgent.unregister();\n            e.preventDefault();\n            location.reload();\n        });\n        $switch.on(\"click\", ()=>{\n            switchCall();\n        });\n        $number.val(localStorage.getItem(\"webPhoneLastNumber\") || \"\");\n        $form.on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            localStorage.setItem(\"webPhoneLastNumber\", $number.val() || \"\");\n            makeCall($number.val(), $homeCountry.val());\n        });\n        $app.empty().append($form);\n    }\n    function makeLoginForm() {\n        const $form = cloneTemplate($loginTemplate);\n        const $authForm = cloneTemplate($authFlowTemplate);\n        const $server = $authForm.find(\"input[name=server]\").eq(0);\n        const $clientId = $authForm.find(\"input[name=clientId]\").eq(0);\n        const $clientSecret = $authForm.find(\"input[name=clientSecret]\").eq(0);\n        const $jwtToken = $form.find(\"input[name=jwtToken]\").eq(0);\n        const $logLevel = $authForm.find(\"select[name=logLevel]\").eq(0);\n        $server.val(localStorage.getItem(\"webPhoneServer\") || (0, $9fvPZ.SDK).server.sandbox);\n        $clientId.val(localStorage.getItem(\"webPhoneclientId\") || \"\");\n        $clientSecret.val(localStorage.getItem(\"webPhoneclientSecret\") || \"\");\n        $jwtToken.val(localStorage.getItem(\"webPhoneJwtToken\") || \"\");\n        $logLevel.val(localStorage.getItem(\"webPhoneLogLevel\") || logLevel);\n        $form.on(\"submit\", (e)=>{\n            console.log(\"Normal Flow\");\n            e.preventDefault();\n            e.stopPropagation();\n            login($server.val(), $clientId.val(), $clientSecret.val(), $jwtToken.val(), $logLevel.val());\n        });\n        //\n        $authForm.on(\"submit\", (e)=>{\n            console.log(\"Authorized Flow\");\n            e.preventDefault();\n            e.stopPropagation();\n            show3LeggedLogin($server.val(), $clientId.val(), $clientSecret.val(), $logLevel.val());\n        });\n        $app.empty().append($authForm).append($form);\n    }\n    makeLoginForm();\n});\n\n\n//# sourceMappingURL=index.5edd3872.js.map\n","let load = require('./helpers/browser/esm-js-loader');\nmodule.exports = (load(\"ezIAn\")).then(() => parcelRequire('9YWKS'));","\"use strict\";\n\nfunction load(id) {\n  // eslint-disable-next-line no-undef\n  return __parcel__import__(require('../bundle-manifest').resolve(id));\n}\nmodule.exports = load;","/* eslint-disable max-params */\n/* eslint-disable max-nested-callbacks */\nimport $ from 'jquery';\nimport { SDK } from '@ringcentral/sdk';\nimport 'bootstrap/dist/css/bootstrap.min.css';\nimport type Platform from '@ringcentral/sdk/lib/platform/Platform';\nimport { SessionState } from 'sip.js';\n\nimport WebPhone from '../src/index';\nimport incomingAudio from 'url:./audio/incoming.ogg';\nimport outgoingAudio from 'url:./audio/outgoing.ogg';\nimport type { WebPhoneInvitation } from '../src/session';\nglobal.jQuery = $;\nimport('bootstrap');\n\n$(() => {\n  let sdk: SDK;\n  let platform: Platform;\n  let webPhone: WebPhone;\n\n  let logLevel: 0 | 1 | 2 | 3 = 0;\n  let extension: any;\n  let primaryNumber: string;\n  const $app = $('#app');\n\n  const $loginTemplate = $('#template-login');\n  const $authFlowTemplate = $('#template-auth-flow');\n  const $callTemplate = $('#template-call');\n  const $incomingTemplate = $('#template-incoming');\n  const $acceptedTemplate = $('#template-accepted');\n\n  const remoteVideoElement = document.getElementById('remoteVideo') as HTMLMediaElement;\n  const localVideoElement = document.getElementById('localVideo') as HTMLMediaElement;\n  let outboundCall = true;\n  let confSessionId = '';\n\n  /**\n   * @param {jQuery|HTMLElement} $tpl\n   * @return {jQuery|HTMLElement}\n   */\n  function cloneTemplate($tpl) {\n    return $($tpl.html());\n  }\n\n  function login(server, clientId, clientSecret, jwtToken, ll) {\n    sdk = new SDK({\n      clientId,\n      clientSecret,\n      server,\n    });\n\n    platform = sdk.platform();\n\n    platform\n      .login({\n        jwt: jwtToken,\n      })\n      .then(() => {\n        return postLogin(server, clientId, clientSecret, jwtToken, ll);\n      })\n      .catch((e) => {\n        console.error(e.stack || e);\n      });\n  }\n\n  // Redirect function\n  function show3LeggedLogin(server, clientId, clientSecret, ll) {\n    const $redirectUri = decodeURIComponent(window.location.href.split('login', 1) + 'callback.html');\n\n    console.log('The redirect uri value :', $redirectUri);\n\n    sdk = new SDK({\n      clientId,\n      clientSecret,\n      server,\n      redirectUri: $redirectUri,\n    });\n\n    platform = sdk.platform();\n\n    const loginUrl = platform.loginUrl();\n\n    platform\n      .loginWindow({ url: loginUrl }) // this method also allows to supply more options to control window position\n      .then(platform.login.bind(platform))\n      .then(() => {\n        return postLogin(server, clientId, clientSecret, '', ll);\n      })\n      .catch((e) => {\n        console.error(e.stack || e);\n      });\n  }\n\n  function postLogin(server, clientId, clientSecret, jwtToken, ll) {\n    logLevel = ll;\n\n    localStorage.setItem('webPhoneServer', server || '');\n    localStorage.setItem('webPhoneclientId', clientId || '');\n    localStorage.setItem('webPhoneclientSecret', clientSecret || '');\n    if (jwtToken && jwtToken.length > 0) {\n      localStorage.setItem('webPhoneJwtToken', jwtToken);\n    }\n    localStorage.setItem('webPhoneLogLevel', (logLevel || 0).toString());\n\n    return platform\n      .get('/restapi/v1.0/account/~/extension/~')\n      .then((res) => res.json())\n      .then((res) => {\n        extension = res;\n        console.log('Extension info', extension);\n        return platform.get('/restapi/v1.0/account/~/extension/~/phone-number');\n      })\n      .then((res) => res.json())\n      .then((r) => {\n        primaryNumber = r.records.filter((r) => r.primary === true)[0].phoneNumber;\n      })\n      .then(() => {\n        return platform.post('/restapi/v1.0/client-info/sip-provision', {\n          sipInfo: [\n            {\n              transport: 'WSS',\n            },\n          ],\n        });\n      })\n      .then((res) => res.json())\n      .then(register)\n      .then(makeCallForm)\n      .catch((e) => {\n        console.error('Error in main promise chain');\n        console.error(e.stack || e);\n      });\n  }\n\n  function register(data) {\n    const webPhoneConfig: any = {\n      enableDscp: true,\n      clientId: localStorage.getItem('webPhoneclientId')!,\n      audioHelper: {\n        enabled: true,\n        incoming: incomingAudio,\n        outgoing: outgoingAudio,\n      },\n      logLevel,\n      appName: 'WebPhoneDemo',\n      appVersion: '1.0.0',\n      media: {\n        remote: remoteVideoElement,\n        local: localVideoElement,\n      },\n      enableQos: true,\n      enableMediaReportLogging: true,\n    };\n\n    const urlParams = new URLSearchParams(window.location.search);\n    if (urlParams.has('customHeader')) {\n      webPhoneConfig.defaultHeaders = ['P-Custom-Header: CustomValue'];\n    }\n\n    webPhone = new WebPhone(data, webPhoneConfig);\n\n    global.webPhone = webPhone; // for debugging\n\n    webPhone.userAgent.audioHelper.setVolume(0.3);\n    webPhone.userAgent.on('invite', onInvite);\n    webPhone.userAgent.on('connecting', () => {\n      console.log('UA connecting');\n    });\n    webPhone.userAgent.on('connected', () => {\n      console.log('UA Connected');\n    });\n    webPhone.userAgent.on('disconnected', () => {\n      console.log('UA Disconnected');\n    });\n    webPhone.userAgent.on('registered', () => {\n      console.log('UA Registered');\n    });\n    webPhone.userAgent.on('unregistered', () => {\n      console.log('UA Unregistered');\n    });\n    webPhone.userAgent.on('registrationFailed', function () {\n      console.log('UA RegistrationFailed', arguments);\n    });\n    webPhone.userAgent.on('message', function () {\n      console.log('UA Message', arguments);\n    });\n    webPhone.userAgent.transport.on('switchBackProxy', () => {\n      console.log('switching back to primary outbound proxy');\n      webPhone.userAgent.transport.reconnect();\n    });\n    webPhone.userAgent.transport.on('closed', () => {\n      console.log('WebSocket closed.');\n    });\n    webPhone.userAgent.transport.on('transportError', () => {\n      console.log('WebSocket transportError occured');\n    });\n    webPhone.userAgent.transport.on('wsConnectionError', () => {\n      console.log('WebSocket wsConnectionError occured');\n    });\n    return webPhone;\n  }\n\n  function onInvite(session: WebPhoneInvitation) {\n    const $modal = cloneTemplate($incomingTemplate).modal({\n      backdrop: 'static',\n    });\n\n    session.stateChange.addListener((newState: SessionState) => {\n      switch (newState) {\n        case SessionState.Initial: {\n          console.log('Initial');\n          break;\n        }\n        case SessionState.Establishing: {\n          console.log('Establishing');\n          break;\n        }\n        case SessionState.Established: {\n          console.log('Established');\n          break;\n        }\n        case SessionState.Terminating: {\n          console.log('Terminating');\n          $modal.modal('hide');\n          break;\n        }\n        case SessionState.Terminated: {\n          console.log('Terminated');\n          $modal.modal('hide');\n          break;\n        }\n      }\n    });\n\n    outboundCall = false;\n    console.log('EVENT: Invite', session.request);\n    console.log('To', session.request.to.displayName, session.request.to.friendlyName);\n    console.log('From', session.request.from.displayName, session.request.from.friendlyName);\n\n    if (session.request.headers['Alert-Info'] && session.request.headers['Alert-Info'][0].raw === 'Auto Answer') {\n      session\n        .accept()\n        .then(() => {\n          onAccepted(session);\n        })\n        .catch((e) => {\n          console.error('Accept failed', e.stack || e);\n        });\n    } else {\n      $modal.find('.answer').on('click', () => {\n        $modal.find('.before-answer').css('display', 'none');\n        $modal.find('.answered').css('display', '');\n        session\n          .accept()\n          .then(() => {\n            $modal.modal('hide');\n            onAccepted(session);\n          })\n          .catch((e) => {\n            console.error('Accept failed', e.stack || e);\n          });\n      });\n\n      $modal.find('.decline').on('click', () => {\n        session.reject();\n        $modal.modal('hide');\n      });\n\n      $modal.find('.toVoicemail').on('click', () => {\n        session.toVoicemail!();\n        $modal.modal('hide');\n      });\n\n      $modal.find('.forward-form').on('submit', (e) => {\n        e.preventDefault();\n        e.stopPropagation();\n        session.forward!($modal.find('input[name=forward]').val().trim())\n          .then(() => {\n            console.log('Forwarded');\n            $modal.modal('hide');\n          })\n          .catch((e2) => {\n            console.error('Forward failed', e2.stack || e2);\n          });\n      });\n\n      $modal.find('.reply-form').on('submit', (e) => {\n        e.preventDefault();\n        e.stopPropagation();\n        session.replyWithMessage!({\n          replyType: 0,\n          replyText: $modal.find('input[name=reply]').val(),\n        })\n          .then(() => {\n            console.log('Replied');\n            $modal.modal('hide');\n          })\n          .catch((e2) => {\n            console.error('Reply failed', e2.stack || e2);\n          });\n      });\n    }\n  }\n\n  const activeCallInfoTemplate = () => ({\n    id: '',\n    from: '',\n    to: '',\n    direction: '',\n    sipData: {\n      toTag: '',\n      fromTag: '',\n    },\n  });\n\n  function captureActiveCallInfo(session) {\n    const direction = outboundCall ? 'Outbound' : 'Inbound';\n    const activeCallInfo = activeCallInfoTemplate();\n    activeCallInfo.from = session.request.from.uri.user;\n    activeCallInfo.to = session.request.to.uri.user;\n    activeCallInfo.direction = direction;\n    activeCallInfo.id = session.dialog.id.callId;\n    activeCallInfo.sipData.fromTag = session.dialog.remoteTag;\n    activeCallInfo.sipData.toTag = session.dialog.localTag;\n    if (!localStorage.getItem('activeCallInfo')) {\n      localStorage.setItem('activeCallInfo', JSON.stringify(activeCallInfo));\n    }\n  }\n\n  function onAccepted(session) {\n    console.log('EVENT: Accepted', session.request);\n    console.log('To', session.request.to.displayName, session.request.to.friendlyName);\n    console.log('From', session.request.from.displayName, session.request.from.friendlyName);\n\n    const $modal = cloneTemplate($acceptedTemplate).modal();\n\n    const $info = $modal.find('.info').eq(0);\n    const $dtmf = $modal.find('input[name=dtmf]').eq(0);\n    const $transfer = $modal.find('input[name=transfer]').eq(0);\n    const $flip = $modal.find('input[name=flip]').eq(0);\n\n    const interval = setInterval(() => {\n      const time = session.startTime ? Math.round((Date.now() - session.startTime) / 1000) + 's' : 'Ringing';\n      $info.text('time: ' + time + '\\nstartTime: ' + JSON.stringify(session.startTime, null, 2) + '\\n');\n    }, 1000);\n\n    function closeModal() {\n      clearInterval(interval);\n      $modal.modal('hide');\n    }\n\n    $modal.find('.increase-volume').on('click', () => {\n      session.userAgent.audioHelper.setVolume(\n        (session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) + 0.1,\n      );\n    });\n\n    $modal.find('.decrease-volume').on('click', () => {\n      session.userAgent.audioHelper.setVolume(\n        (session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) - 0.1,\n      );\n    });\n\n    $modal.find('.mute').on('click', () => {\n      session.mute();\n    });\n\n    $modal.find('.unmute').on('click', () => {\n      session.unmute();\n    });\n\n    $modal.find('.hold').on('click', () => {\n      session\n        .hold()\n        .then(() => {\n          console.log('Holding');\n        })\n        .catch((e) => {\n          console.error('Holding failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.unhold').on('click', () => {\n      session\n        .unhold()\n        .then(() => {\n          console.log('UnHolding');\n        })\n        .catch((e) => {\n          console.error('UnHolding failed', e.stack || e);\n        });\n    });\n    $modal.find('.startRecord').on('click', () => {\n      session\n        .startRecord()\n        .then(() => {\n          console.log('Recording Started');\n        })\n        .catch((e) => {\n          console.error('Recording Start failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.stopRecord').on('click', () => {\n      session\n        .stopRecord()\n        .then(() => {\n          console.log('Recording Stopped');\n        })\n        .catch((e) => {\n          console.error('Recording Stop failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.park').on('click', () => {\n      session\n        .park()\n        .then(() => {\n          console.log('Parked');\n        })\n        .catch((e) => {\n          console.error('Park failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.transfer-form').on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session\n        .transfer($transfer.val().trim())\n        .then(() => {\n          console.log('Transferred');\n          $modal.modal('hide');\n        })\n        .catch((e2) => {\n          console.error('Transfer failed', e2.stack || e2);\n        });\n    });\n\n    $modal.find('.transfer-form button.warm').on('click', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session.hold().then(() => {\n        console.log('Placing the call on hold, initiating attended transfer');\n        const newSession = session.userAgent.invite($transfer.val().trim());\n        newSession.once('established', () => {\n          console.log('New call initated. Click Complete to complete the transfer');\n          $modal.find('.transfer-form button.complete').on('click', () => {\n            session\n              .warmTransfer(newSession)\n              .then(() => {\n                console.log('Warm transfer completed');\n              })\n              .catch((e2) => {\n                console.error('Transfer failed', e2.stack || e2);\n              });\n          });\n        });\n      });\n    });\n\n    $modal.find('.flip-form').on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session\n        .flip($flip.val().trim())\n        .then(() => {\n          console.log('Flipped');\n        })\n        .catch((e2) => {\n          console.error('Flip failed', e2.stack || e2);\n        });\n      $flip.val('');\n    });\n\n    $modal.find('.dtmf-form').on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session.dtmf($dtmf.val().trim());\n      $dtmf.val('');\n    });\n\n    const $startConfButton = $modal.find('.startConf');\n\n    $startConfButton.on('click', () => {\n      initConference();\n    });\n\n    $modal.find('.hangup').on('click', () => {\n      session.dispose();\n    });\n\n    session.stateChange.addListener((newState: SessionState) => {\n      switch (newState) {\n        case SessionState.Initial: {\n          console.log('Initial');\n          break;\n        }\n        case SessionState.Establishing: {\n          console.log('Establishing');\n          break;\n        }\n        case SessionState.Established: {\n          console.log('Established');\n          captureActiveCallInfo(session);\n          break;\n        }\n        case SessionState.Terminating: {\n          console.log('Terminating');\n          closeModal();\n          break;\n        }\n        case SessionState.Terminated: {\n          console.log('Terminated');\n          closeModal();\n          localStorage.setItem('activeCallInfo', '');\n          break;\n        }\n      }\n    });\n\n    session.on('refer', () => {\n      console.log('Event: Refer');\n      closeModal();\n    });\n    session.on('replaced', (newSession) => {\n      console.log('Event: Replaced: old session', session, 'has been replaced with', newSession);\n      closeModal();\n      onAccepted(newSession);\n    });\n    session.on('dtmf', () => {\n      console.log('Event: DTMF');\n    });\n    session.on('muted', () => {\n      console.log('Event: Muted');\n    });\n    session.on('unmuted', () => {\n      console.log('Event: Unmuted');\n    });\n  }\n\n  function makeCall(number, homeCountryId) {\n    outboundCall = true;\n    // eslint-disable-next-line no-param-reassign\n    homeCountryId = homeCountryId || extension?.regionalSettings?.homeCountry?.id || null;\n\n    const session = webPhone.userAgent.invite(number, {\n      fromNumber: primaryNumber,\n      homeCountryId,\n    });\n\n    onAccepted(session);\n  }\n\n  function switchCall() {\n    const activeCallItem = JSON.parse(localStorage.getItem('activeCallInfo')!);\n    console.log('Switching active call to current tab: ', activeCallItem);\n    const session = webPhone.userAgent.switchFrom(activeCallItem, {});\n    onAccepted(session);\n  }\n\n  let onConference = false;\n\n  function initConference() {\n    if (!onConference) {\n      getPresenceActiveCalls()\n        .then((res) => res.json())\n        .then((response) => {\n          const partyId = response.activeCalls[0].partyId;\n          const telephonySessionId = response.activeCalls[0].telephonySessionId;\n          getConfVoiceToken().then((voiceToken) => {\n            startConferenceCall(voiceToken, partyId, telephonySessionId);\n            onConference = true;\n          });\n        });\n    } else {\n      alert('A conference is already in progress');\n    }\n  }\n\n  function getPresenceActiveCalls() {\n    return platform.get('/restapi/v1.0/account/~/extension/~/presence?detailedTelephonyState=true');\n  }\n\n  function getConfVoiceToken() {\n    return platform\n      .post('/restapi/v1.0/account/~/telephony/conference', {})\n      .then((res) => res.json())\n      .then((res) => {\n        confSessionId = res.session.id;\n        return res.session.voiceCallToken;\n      });\n  }\n\n  function startConferenceCall(voiceToken, partyId, telephonySessionId) {\n    const session = webPhone.userAgent.invite(voiceToken, {\n      fromNumber: primaryNumber,\n    });\n    session.stateChange.addListener((newState) => {\n      if (newState === SessionState.Established) {\n        onAccepted(session);\n        console.log('Conference call started');\n        bringIn(telephonySessionId, partyId)\n          .then((res) => res.json())\n          .then((response) => {\n            console.log('Adding call to conference succesful', response);\n          })\n          .catch((e) => {\n            console.error('Conference call failed', e.stack || e);\n          });\n      }\n    });\n  }\n\n  function bringIn(telephonySessionId, partyId) {\n    const url = '/restapi/v1.0/account/~/telephony/sessions/' + confSessionId + '/parties/bring-in';\n    return platform.post(url, {\n      telephonySessionId: telephonySessionId,\n      partyId: partyId,\n    });\n  }\n\n  function makeCallForm() {\n    const $form = cloneTemplate($callTemplate);\n\n    const $number = $form.find('input[name=number]').eq(0);\n    const $homeCountry = $form.find('input[name=homeCountry]').eq(0);\n    const $username = $form.find('.username').eq(0);\n    const $logout = $form.find('.logout').eq(0);\n    const $switch = $form.find('.switch').eq(0);\n\n    $username.html(\n      '<dl>' +\n        '<dt>Contact</dt><dd>' +\n        extension.contact.firstName +\n        ' ' +\n        extension.contact.lastName +\n        '</dd>' +\n        '<dt>Company</dt><dd>' +\n        (extension.contact.company || '?') +\n        '</dd>' +\n        '<dt>From Phone Number</dt><dd>' +\n        primaryNumber +\n        '</dd>' +\n        '</dl>',\n    );\n\n    $logout.on('click', (e) => {\n      webPhone.userAgent.unregister();\n      e.preventDefault();\n      location.reload();\n    });\n\n    $switch.on('click', () => {\n      switchCall();\n    });\n\n    $number.val(localStorage.getItem('webPhoneLastNumber') || '');\n\n    $form.on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n\n      localStorage.setItem('webPhoneLastNumber', $number.val() || '');\n\n      makeCall($number.val(), $homeCountry.val());\n    });\n\n    $app.empty().append($form);\n  }\n\n  function makeLoginForm() {\n    const $form = cloneTemplate($loginTemplate);\n    const $authForm = cloneTemplate($authFlowTemplate);\n\n    const $server = $authForm.find('input[name=server]').eq(0);\n    const $clientId = $authForm.find('input[name=clientId]').eq(0);\n    const $clientSecret = $authForm.find('input[name=clientSecret]').eq(0);\n    const $jwtToken = $form.find('input[name=jwtToken]').eq(0);\n    const $logLevel = $authForm.find('select[name=logLevel]').eq(0);\n\n    $server.val(localStorage.getItem('webPhoneServer') || SDK.server.sandbox);\n    $clientId.val(localStorage.getItem('webPhoneclientId') || '');\n    $clientSecret.val(localStorage.getItem('webPhoneclientSecret') || '');\n    $jwtToken.val(localStorage.getItem('webPhoneJwtToken') || '');\n    $logLevel.val(localStorage.getItem('webPhoneLogLevel') || logLevel);\n\n    $form.on('submit', (e) => {\n      console.log('Normal Flow');\n\n      e.preventDefault();\n      e.stopPropagation();\n\n      login($server.val(), $clientId.val(), $clientSecret.val(), $jwtToken.val(), $logLevel.val());\n    });\n    //\n    $authForm.on('submit', (e) => {\n      console.log('Authorized Flow');\n\n      e.preventDefault();\n      e.stopPropagation();\n\n      show3LeggedLogin($server.val(), $clientId.val(), $clientSecret.val(), $logLevel.val());\n    });\n\n    $app.empty().append($authForm).append($form);\n  }\n\n  makeLoginForm();\n});\n","/*!\n * jQuery JavaScript Library v3.7.1\n * https://jquery.com/\n *\n * Copyright OpenJS Foundation and other contributors\n * Released under the MIT license\n * https://jquery.org/license\n *\n * Date: 2023-08-28T13:37Z\n */\n( function( global, factory ) {\n\n\t\"use strict\";\n\n\tif ( typeof module === \"object\" && typeof module.exports === \"object\" ) {\n\n\t\t// For CommonJS and CommonJS-like environments where a proper `window`\n\t\t// is present, execute the factory and get jQuery.\n\t\t// For environments that do not have a `window` with a `document`\n\t\t// (such as Node.js), expose a factory as module.exports.\n\t\t// This accentuates the need for the creation of a real `window`.\n\t\t// e.g. var jQuery = require(\"jquery\")(window);\n\t\t// See ticket trac-14549 for more info.\n\t\tmodule.exports = global.document ?\n\t\t\tfactory( global, true ) :\n\t\t\tfunction( w ) {\n\t\t\t\tif ( !w.document ) {\n\t\t\t\t\tthrow new Error( \"jQuery requires a window with a document\" );\n\t\t\t\t}\n\t\t\t\treturn factory( w );\n\t\t\t};\n\t} else {\n\t\tfactory( global );\n\t}\n\n// Pass this if window is not defined yet\n} )( typeof window !== \"undefined\" ? window : this, function( window, noGlobal ) {\n\n// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1\n// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode\n// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common\n// enough that all such attempts are guarded in a try block.\n\"use strict\";\n\nvar arr = [];\n\nvar getProto = Object.getPrototypeOf;\n\nvar slice = arr.slice;\n\nvar flat = arr.flat ? function( array ) {\n\treturn arr.flat.call( array );\n} : function( array ) {\n\treturn arr.concat.apply( [], array );\n};\n\n\nvar push = arr.push;\n\nvar indexOf = arr.indexOf;\n\nvar class2type = {};\n\nvar toString = class2type.toString;\n\nvar hasOwn = class2type.hasOwnProperty;\n\nvar fnToString = hasOwn.toString;\n\nvar ObjectFunctionString = fnToString.call( Object );\n\nvar support = {};\n\nvar isFunction = function isFunction( obj ) {\n\n\t\t// Support: Chrome <=57, Firefox <=52\n\t\t// In some browsers, typeof returns \"function\" for HTML <object> elements\n\t\t// (i.e., `typeof document.createElement( \"object\" ) === \"function\"`).\n\t\t// We don't want to classify *any* DOM node as a function.\n\t\t// Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5\n\t\t// Plus for old WebKit, typeof returns \"function\" for HTML collections\n\t\t// (e.g., `typeof document.getElementsByTagName(\"div\") === \"function\"`). (gh-4756)\n\t\treturn typeof obj === \"function\" && typeof obj.nodeType !== \"number\" &&\n\t\t\ttypeof obj.item !== \"function\";\n\t};\n\n\nvar isWindow = function isWindow( obj ) {\n\t\treturn obj != null && obj === obj.window;\n\t};\n\n\nvar document = window.document;\n\n\n\n\tvar preservedScriptAttributes = {\n\t\ttype: true,\n\t\tsrc: true,\n\t\tnonce: true,\n\t\tnoModule: true\n\t};\n\n\tfunction DOMEval( code, node, doc ) {\n\t\tdoc = doc || document;\n\n\t\tvar i, val,\n\t\t\tscript = doc.createElement( \"script\" );\n\n\t\tscript.text = code;\n\t\tif ( node ) {\n\t\t\tfor ( i in preservedScriptAttributes ) {\n\n\t\t\t\t// Support: Firefox 64+, Edge 18+\n\t\t\t\t// Some browsers don't support the \"nonce\" property on scripts.\n\t\t\t\t// On the other hand, just using `getAttribute` is not enough as\n\t\t\t\t// the `nonce` attribute is reset to an empty string whenever it\n\t\t\t\t// becomes browsing-context connected.\n\t\t\t\t// See https://github.com/whatwg/html/issues/2369\n\t\t\t\t// See https://html.spec.whatwg.org/#nonce-attributes\n\t\t\t\t// The `node.getAttribute` check was added for the sake of\n\t\t\t\t// `jQuery.globalEval` so that it can fake a nonce-containing node\n\t\t\t\t// via an object.\n\t\t\t\tval = node[ i ] || node.getAttribute && node.getAttribute( i );\n\t\t\t\tif ( val ) {\n\t\t\t\t\tscript.setAttribute( i, val );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tdoc.head.appendChild( script ).parentNode.removeChild( script );\n\t}\n\n\nfunction toType( obj ) {\n\tif ( obj == null ) {\n\t\treturn obj + \"\";\n\t}\n\n\t// Support: Android <=2.3 only (functionish RegExp)\n\treturn typeof obj === \"object\" || typeof obj === \"function\" ?\n\t\tclass2type[ toString.call( obj ) ] || \"object\" :\n\t\ttypeof obj;\n}\n/* global Symbol */\n// Defining this global in .eslintrc.json would create a danger of using the global\n// unguarded in another place, it seems safer to define global only for this module\n\n\n\nvar version = \"3.7.1\",\n\n\trhtmlSuffix = /HTML$/i,\n\n\t// Define a local copy of jQuery\n\tjQuery = function( selector, context ) {\n\n\t\t// The jQuery object is actually just the init constructor 'enhanced'\n\t\t// Need init if jQuery is called (just allow error to be thrown if not included)\n\t\treturn new jQuery.fn.init( selector, context );\n\t};\n\njQuery.fn = jQuery.prototype = {\n\n\t// The current version of jQuery being used\n\tjquery: version,\n\n\tconstructor: jQuery,\n\n\t// The default length of a jQuery object is 0\n\tlength: 0,\n\n\ttoArray: function() {\n\t\treturn slice.call( this );\n\t},\n\n\t// Get the Nth element in the matched element set OR\n\t// Get the whole matched element set as a clean array\n\tget: function( num ) {\n\n\t\t// Return all the elements in a clean array\n\t\tif ( num == null ) {\n\t\t\treturn slice.call( this );\n\t\t}\n\n\t\t// Return just the one element from the set\n\t\treturn num < 0 ? this[ num + this.length ] : this[ num ];\n\t},\n\n\t// Take an array of elements and push it onto the stack\n\t// (returning the new matched element set)\n\tpushStack: function( elems ) {\n\n\t\t// Build a new jQuery matched element set\n\t\tvar ret = jQuery.merge( this.constructor(), elems );\n\n\t\t// Add the old object onto the stack (as a reference)\n\t\tret.prevObject = this;\n\n\t\t// Return the newly-formed element set\n\t\treturn ret;\n\t},\n\n\t// Execute a callback for every element in the matched set.\n\teach: function( callback ) {\n\t\treturn jQuery.each( this, callback );\n\t},\n\n\tmap: function( callback ) {\n\t\treturn this.pushStack( jQuery.map( this, function( elem, i ) {\n\t\t\treturn callback.call( elem, i, elem );\n\t\t} ) );\n\t},\n\n\tslice: function() {\n\t\treturn this.pushStack( slice.apply( this, arguments ) );\n\t},\n\n\tfirst: function() {\n\t\treturn this.eq( 0 );\n\t},\n\n\tlast: function() {\n\t\treturn this.eq( -1 );\n\t},\n\n\teven: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn ( i + 1 ) % 2;\n\t\t} ) );\n\t},\n\n\todd: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn i % 2;\n\t\t} ) );\n\t},\n\n\teq: function( i ) {\n\t\tvar len = this.length,\n\t\t\tj = +i + ( i < 0 ? len : 0 );\n\t\treturn this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );\n\t},\n\n\tend: function() {\n\t\treturn this.prevObject || this.constructor();\n\t},\n\n\t// For internal use only.\n\t// Behaves like an Array's method, not like a jQuery method.\n\tpush: push,\n\tsort: arr.sort,\n\tsplice: arr.splice\n};\n\njQuery.extend = jQuery.fn.extend = function() {\n\tvar options, name, src, copy, copyIsArray, clone,\n\t\ttarget = arguments[ 0 ] || {},\n\t\ti = 1,\n\t\tlength = arguments.length,\n\t\tdeep = false;\n\n\t// Handle a deep copy situation\n\tif ( typeof target === \"boolean\" ) {\n\t\tdeep = target;\n\n\t\t// Skip the boolean and the target\n\t\ttarget = arguments[ i ] || {};\n\t\ti++;\n\t}\n\n\t// Handle case when target is a string or something (possible in deep copy)\n\tif ( typeof target !== \"object\" && !isFunction( target ) ) {\n\t\ttarget = {};\n\t}\n\n\t// Extend jQuery itself if only one argument is passed\n\tif ( i === length ) {\n\t\ttarget = this;\n\t\ti--;\n\t}\n\n\tfor ( ; i < length; i++ ) {\n\n\t\t// Only deal with non-null/undefined values\n\t\tif ( ( options = arguments[ i ] ) != null ) {\n\n\t\t\t// Extend the base object\n\t\t\tfor ( name in options ) {\n\t\t\t\tcopy = options[ name ];\n\n\t\t\t\t// Prevent Object.prototype pollution\n\t\t\t\t// Prevent never-ending loop\n\t\t\t\tif ( name === \"__proto__\" || target === copy ) {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\n\t\t\t\t// Recurse if we're merging plain objects or arrays\n\t\t\t\tif ( deep && copy && ( jQuery.isPlainObject( copy ) ||\n\t\t\t\t\t( copyIsArray = Array.isArray( copy ) ) ) ) {\n\t\t\t\t\tsrc = target[ name ];\n\n\t\t\t\t\t// Ensure proper type for the source value\n\t\t\t\t\tif ( copyIsArray && !Array.isArray( src ) ) {\n\t\t\t\t\t\tclone = [];\n\t\t\t\t\t} else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) {\n\t\t\t\t\t\tclone = {};\n\t\t\t\t\t} else {\n\t\t\t\t\t\tclone = src;\n\t\t\t\t\t}\n\t\t\t\t\tcopyIsArray = false;\n\n\t\t\t\t\t// Never move original objects, clone them\n\t\t\t\t\ttarget[ name ] = jQuery.extend( deep, clone, copy );\n\n\t\t\t\t// Don't bring in undefined values\n\t\t\t\t} else if ( copy !== undefined ) {\n\t\t\t\t\ttarget[ name ] = copy;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Return the modified object\n\treturn target;\n};\n\njQuery.extend( {\n\n\t// Unique for each copy of jQuery on the page\n\texpando: \"jQuery\" + ( version + Math.random() ).replace( /\\D/g, \"\" ),\n\n\t// Assume jQuery is ready without the ready module\n\tisReady: true,\n\n\terror: function( msg ) {\n\t\tthrow new Error( msg );\n\t},\n\n\tnoop: function() {},\n\n\tisPlainObject: function( obj ) {\n\t\tvar proto, Ctor;\n\n\t\t// Detect obvious negatives\n\t\t// Use toString instead of jQuery.type to catch host objects\n\t\tif ( !obj || toString.call( obj ) !== \"[object Object]\" ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tproto = getProto( obj );\n\n\t\t// Objects with no prototype (e.g., `Object.create( null )`) are plain\n\t\tif ( !proto ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Objects with prototype are plain iff they were constructed by a global Object function\n\t\tCtor = hasOwn.call( proto, \"constructor\" ) && proto.constructor;\n\t\treturn typeof Ctor === \"function\" && fnToString.call( Ctor ) === ObjectFunctionString;\n\t},\n\n\tisEmptyObject: function( obj ) {\n\t\tvar name;\n\n\t\tfor ( name in obj ) {\n\t\t\treturn false;\n\t\t}\n\t\treturn true;\n\t},\n\n\t// Evaluates a script in a provided context; falls back to the global one\n\t// if not specified.\n\tglobalEval: function( code, options, doc ) {\n\t\tDOMEval( code, { nonce: options && options.nonce }, doc );\n\t},\n\n\teach: function( obj, callback ) {\n\t\tvar length, i = 0;\n\n\t\tif ( isArrayLike( obj ) ) {\n\t\t\tlength = obj.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tfor ( i in obj ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn obj;\n\t},\n\n\n\t// Retrieve the text value of an array of DOM nodes\n\ttext: function( elem ) {\n\t\tvar node,\n\t\t\tret = \"\",\n\t\t\ti = 0,\n\t\t\tnodeType = elem.nodeType;\n\n\t\tif ( !nodeType ) {\n\n\t\t\t// If no nodeType, this is expected to be an array\n\t\t\twhile ( ( node = elem[ i++ ] ) ) {\n\n\t\t\t\t// Do not traverse comment nodes\n\t\t\t\tret += jQuery.text( node );\n\t\t\t}\n\t\t}\n\t\tif ( nodeType === 1 || nodeType === 11 ) {\n\t\t\treturn elem.textContent;\n\t\t}\n\t\tif ( nodeType === 9 ) {\n\t\t\treturn elem.documentElement.textContent;\n\t\t}\n\t\tif ( nodeType === 3 || nodeType === 4 ) {\n\t\t\treturn elem.nodeValue;\n\t\t}\n\n\t\t// Do not include comment or processing instruction nodes\n\n\t\treturn ret;\n\t},\n\n\t// results is for internal usage only\n\tmakeArray: function( arr, results ) {\n\t\tvar ret = results || [];\n\n\t\tif ( arr != null ) {\n\t\t\tif ( isArrayLike( Object( arr ) ) ) {\n\t\t\t\tjQuery.merge( ret,\n\t\t\t\t\ttypeof arr === \"string\" ?\n\t\t\t\t\t\t[ arr ] : arr\n\t\t\t\t);\n\t\t\t} else {\n\t\t\t\tpush.call( ret, arr );\n\t\t\t}\n\t\t}\n\n\t\treturn ret;\n\t},\n\n\tinArray: function( elem, arr, i ) {\n\t\treturn arr == null ? -1 : indexOf.call( arr, elem, i );\n\t},\n\n\tisXMLDoc: function( elem ) {\n\t\tvar namespace = elem && elem.namespaceURI,\n\t\t\tdocElem = elem && ( elem.ownerDocument || elem ).documentElement;\n\n\t\t// Assume HTML when documentElement doesn't yet exist, such as inside\n\t\t// document fragments.\n\t\treturn !rhtmlSuffix.test( namespace || docElem && docElem.nodeName || \"HTML\" );\n\t},\n\n\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t// push.apply(_, arraylike) throws on ancient WebKit\n\tmerge: function( first, second ) {\n\t\tvar len = +second.length,\n\t\t\tj = 0,\n\t\t\ti = first.length;\n\n\t\tfor ( ; j < len; j++ ) {\n\t\t\tfirst[ i++ ] = second[ j ];\n\t\t}\n\n\t\tfirst.length = i;\n\n\t\treturn first;\n\t},\n\n\tgrep: function( elems, callback, invert ) {\n\t\tvar callbackInverse,\n\t\t\tmatches = [],\n\t\t\ti = 0,\n\t\t\tlength = elems.length,\n\t\t\tcallbackExpect = !invert;\n\n\t\t// Go through the array, only saving the items\n\t\t// that pass the validator function\n\t\tfor ( ; i < length; i++ ) {\n\t\t\tcallbackInverse = !callback( elems[ i ], i );\n\t\t\tif ( callbackInverse !== callbackExpect ) {\n\t\t\t\tmatches.push( elems[ i ] );\n\t\t\t}\n\t\t}\n\n\t\treturn matches;\n\t},\n\n\t// arg is for internal usage only\n\tmap: function( elems, callback, arg ) {\n\t\tvar length, value,\n\t\t\ti = 0,\n\t\t\tret = [];\n\n\t\t// Go through the array, translating each of the items to their new values\n\t\tif ( isArrayLike( elems ) ) {\n\t\t\tlength = elems.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Go through every key on the object,\n\t\t} else {\n\t\t\tfor ( i in elems ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Flatten any nested arrays\n\t\treturn flat( ret );\n\t},\n\n\t// A global GUID counter for objects\n\tguid: 1,\n\n\t// jQuery.support is not used in Core but other projects attach their\n\t// properties to it so it needs to exist.\n\tsupport: support\n} );\n\nif ( typeof Symbol === \"function\" ) {\n\tjQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];\n}\n\n// Populate the class2type map\njQuery.each( \"Boolean Number String Function Array Date RegExp Object Error Symbol\".split( \" \" ),\n\tfunction( _i, name ) {\n\t\tclass2type[ \"[object \" + name + \"]\" ] = name.toLowerCase();\n\t} );\n\nfunction isArrayLike( obj ) {\n\n\t// Support: real iOS 8.2 only (not reproducible in simulator)\n\t// `in` check used to prevent JIT error (gh-2145)\n\t// hasOwn isn't used here due to false negatives\n\t// regarding Nodelist length in IE\n\tvar length = !!obj && \"length\" in obj && obj.length,\n\t\ttype = toType( obj );\n\n\tif ( isFunction( obj ) || isWindow( obj ) ) {\n\t\treturn false;\n\t}\n\n\treturn type === \"array\" || length === 0 ||\n\t\ttypeof length === \"number\" && length > 0 && ( length - 1 ) in obj;\n}\n\n\nfunction nodeName( elem, name ) {\n\n\treturn elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n\n}\nvar pop = arr.pop;\n\n\nvar sort = arr.sort;\n\n\nvar splice = arr.splice;\n\n\nvar whitespace = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\";\n\n\nvar rtrimCSS = new RegExp(\n\t\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\",\n\t\"g\"\n);\n\n\n\n\n// Note: an element does not contain itself\njQuery.contains = function( a, b ) {\n\tvar bup = b && b.parentNode;\n\n\treturn a === bup || !!( bup && bup.nodeType === 1 && (\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE doesn't have `contains` on SVG.\n\t\ta.contains ?\n\t\t\ta.contains( bup ) :\n\t\t\ta.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16\n\t) );\n};\n\n\n\n\n// CSS string/identifier serialization\n// https://drafts.csswg.org/cssom/#common-serializing-idioms\nvar rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\x80-\\uFFFF\\w-]/g;\n\nfunction fcssescape( ch, asCodePoint ) {\n\tif ( asCodePoint ) {\n\n\t\t// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n\t\tif ( ch === \"\\0\" ) {\n\t\t\treturn \"\\uFFFD\";\n\t\t}\n\n\t\t// Control characters and (dependent upon position) numbers get escaped as code points\n\t\treturn ch.slice( 0, -1 ) + \"\\\\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + \" \";\n\t}\n\n\t// Other potentially-special ASCII characters get backslash-escaped\n\treturn \"\\\\\" + ch;\n}\n\njQuery.escapeSelector = function( sel ) {\n\treturn ( sel + \"\" ).replace( rcssescape, fcssescape );\n};\n\n\n\n\nvar preferredDoc = document,\n\tpushNative = push;\n\n( function() {\n\nvar i,\n\tExpr,\n\toutermostContext,\n\tsortInput,\n\thasDuplicate,\n\tpush = pushNative,\n\n\t// Local document vars\n\tdocument,\n\tdocumentElement,\n\tdocumentIsHTML,\n\trbuggyQSA,\n\tmatches,\n\n\t// Instance-specific data\n\texpando = jQuery.expando,\n\tdirruns = 0,\n\tdone = 0,\n\tclassCache = createCache(),\n\ttokenCache = createCache(),\n\tcompilerCache = createCache(),\n\tnonnativeSelectorCache = createCache(),\n\tsortOrder = function( a, b ) {\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t}\n\t\treturn 0;\n\t},\n\n\tbooleans = \"checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|\" +\n\t\t\"loop|multiple|open|readonly|required|scoped\",\n\n\t// Regular expressions\n\n\t// https://www.w3.org/TR/css-syntax-3/#ident-token-diagram\n\tidentifier = \"(?:\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\[^\\\\r\\\\n\\\\f]|[\\\\w-]|[^\\0-\\\\x7f])+\",\n\n\t// Attribute selectors: https://www.w3.org/TR/selectors/#attribute-selectors\n\tattributes = \"\\\\[\" + whitespace + \"*(\" + identifier + \")(?:\" + whitespace +\n\n\t\t// Operator (capture 2)\n\t\t\"*([*^$|!~]?=)\" + whitespace +\n\n\t\t// \"Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]\"\n\t\t\"*(?:'((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\"|(\" + identifier + \"))|)\" +\n\t\twhitespace + \"*\\\\]\",\n\n\tpseudos = \":(\" + identifier + \")(?:\\\\((\" +\n\n\t\t// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n\t\t// 1. quoted (capture 3; capture 4 or capture 5)\n\t\t\"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" +\n\n\t\t// 2. simple (capture 6)\n\t\t\"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" +\n\n\t\t// 3. anything else (capture 2)\n\t\t\".*\" +\n\t\t\")\\\\)|)\",\n\n\t// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n\trwhitespace = new RegExp( whitespace + \"+\", \"g\" ),\n\n\trcomma = new RegExp( \"^\" + whitespace + \"*,\" + whitespace + \"*\" ),\n\trleadingCombinator = new RegExp( \"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" +\n\t\twhitespace + \"*\" ),\n\trdescend = new RegExp( whitespace + \"|>\" ),\n\n\trpseudo = new RegExp( pseudos ),\n\tridentifier = new RegExp( \"^\" + identifier + \"$\" ),\n\n\tmatchExpr = {\n\t\tID: new RegExp( \"^#(\" + identifier + \")\" ),\n\t\tCLASS: new RegExp( \"^\\\\.(\" + identifier + \")\" ),\n\t\tTAG: new RegExp( \"^(\" + identifier + \"|[*])\" ),\n\t\tATTR: new RegExp( \"^\" + attributes ),\n\t\tPSEUDO: new RegExp( \"^\" + pseudos ),\n\t\tCHILD: new RegExp(\n\t\t\t\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" +\n\t\t\t\twhitespace + \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" +\n\t\t\t\twhitespace + \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\" ),\n\t\tbool: new RegExp( \"^(?:\" + booleans + \")$\", \"i\" ),\n\n\t\t// For use in libraries implementing .is()\n\t\t// We use this for POS matching in `select`\n\t\tneedsContext: new RegExp( \"^\" + whitespace +\n\t\t\t\"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" + whitespace +\n\t\t\t\"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\" )\n\t},\n\n\trinputs = /^(?:input|select|textarea|button)$/i,\n\trheader = /^h\\d$/i,\n\n\t// Easily-parseable/retrievable ID or TAG or CLASS selectors\n\trquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/,\n\n\trsibling = /[+~]/,\n\n\t// CSS escapes\n\t// https://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n\trunescape = new RegExp( \"\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\([^\\\\r\\\\n\\\\f])\", \"g\" ),\n\tfunescape = function( escape, nonHex ) {\n\t\tvar high = \"0x\" + escape.slice( 1 ) - 0x10000;\n\n\t\tif ( nonHex ) {\n\n\t\t\t// Strip the backslash prefix from a non-hex escape sequence\n\t\t\treturn nonHex;\n\t\t}\n\n\t\t// Replace a hexadecimal escape sequence with the encoded Unicode code point\n\t\t// Support: IE <=11+\n\t\t// For values outside the Basic Multilingual Plane (BMP), manually construct a\n\t\t// surrogate pair\n\t\treturn high < 0 ?\n\t\t\tString.fromCharCode( high + 0x10000 ) :\n\t\t\tString.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );\n\t},\n\n\t// Used for iframes; see `setDocument`.\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Removing the function wrapper causes a \"Permission Denied\"\n\t// error in IE/Edge.\n\tunloadHandler = function() {\n\t\tsetDocument();\n\t},\n\n\tinDisabledFieldset = addCombinator(\n\t\tfunction( elem ) {\n\t\t\treturn elem.disabled === true && nodeName( elem, \"fieldset\" );\n\t\t},\n\t\t{ dir: \"parentNode\", next: \"legend\" }\n\t);\n\n// Support: IE <=9 only\n// Accessing document.activeElement can throw unexpectedly\n// https://bugs.jquery.com/ticket/13393\nfunction safeActiveElement() {\n\ttry {\n\t\treturn document.activeElement;\n\t} catch ( err ) { }\n}\n\n// Optimize for push.apply( _, NodeList )\ntry {\n\tpush.apply(\n\t\t( arr = slice.call( preferredDoc.childNodes ) ),\n\t\tpreferredDoc.childNodes\n\t);\n\n\t// Support: Android <=4.0\n\t// Detect silently failing push.apply\n\t// eslint-disable-next-line no-unused-expressions\n\tarr[ preferredDoc.childNodes.length ].nodeType;\n} catch ( e ) {\n\tpush = {\n\t\tapply: function( target, els ) {\n\t\t\tpushNative.apply( target, slice.call( els ) );\n\t\t},\n\t\tcall: function( target ) {\n\t\t\tpushNative.apply( target, slice.call( arguments, 1 ) );\n\t\t}\n\t};\n}\n\nfunction find( selector, context, results, seed ) {\n\tvar m, i, elem, nid, match, groups, newSelector,\n\t\tnewContext = context && context.ownerDocument,\n\n\t\t// nodeType defaults to 9, since context defaults to document\n\t\tnodeType = context ? context.nodeType : 9;\n\n\tresults = results || [];\n\n\t// Return early from calls with invalid selector or context\n\tif ( typeof selector !== \"string\" || !selector ||\n\t\tnodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {\n\n\t\treturn results;\n\t}\n\n\t// Try to shortcut find operations (as opposed to filters) in HTML documents\n\tif ( !seed ) {\n\t\tsetDocument( context );\n\t\tcontext = context || document;\n\n\t\tif ( documentIsHTML ) {\n\n\t\t\t// If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n\t\t\t// (excepting DocumentFragment context, where the methods don't exist)\n\t\t\tif ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) {\n\n\t\t\t\t// ID selector\n\t\t\t\tif ( ( m = match[ 1 ] ) ) {\n\n\t\t\t\t\t// Document context\n\t\t\t\t\tif ( nodeType === 9 ) {\n\t\t\t\t\t\tif ( ( elem = context.getElementById( m ) ) ) {\n\n\t\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\t\tif ( elem.id === m ) {\n\t\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t// Element context\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\tif ( newContext && ( elem = newContext.getElementById( m ) ) &&\n\t\t\t\t\t\t\tfind.contains( context, elem ) &&\n\t\t\t\t\t\t\telem.id === m ) {\n\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t// Type selector\n\t\t\t\t} else if ( match[ 2 ] ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByTagName( selector ) );\n\t\t\t\t\treturn results;\n\n\t\t\t\t// Class selector\n\t\t\t\t} else if ( ( m = match[ 3 ] ) && context.getElementsByClassName ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByClassName( m ) );\n\t\t\t\t\treturn results;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Take advantage of querySelectorAll\n\t\t\tif ( !nonnativeSelectorCache[ selector + \" \" ] &&\n\t\t\t\t( !rbuggyQSA || !rbuggyQSA.test( selector ) ) ) {\n\n\t\t\t\tnewSelector = selector;\n\t\t\t\tnewContext = context;\n\n\t\t\t\t// qSA considers elements outside a scoping root when evaluating child or\n\t\t\t\t// descendant combinators, which is not what we want.\n\t\t\t\t// In such cases, we work around the behavior by prefixing every selector in the\n\t\t\t\t// list with an ID selector referencing the scope context.\n\t\t\t\t// The technique has to be used as well when a leading combinator is used\n\t\t\t\t// as such selectors are not recognized by querySelectorAll.\n\t\t\t\t// Thanks to Andrew Dupont for this technique.\n\t\t\t\tif ( nodeType === 1 &&\n\t\t\t\t\t( rdescend.test( selector ) || rleadingCombinator.test( selector ) ) ) {\n\n\t\t\t\t\t// Expand context for sibling selectors\n\t\t\t\t\tnewContext = rsibling.test( selector ) && testContext( context.parentNode ) ||\n\t\t\t\t\t\tcontext;\n\n\t\t\t\t\t// We can use :scope instead of the ID hack if the browser\n\t\t\t\t\t// supports it & if we're not changing the context.\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when\n\t\t\t\t\t// strict-comparing two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( newContext != context || !support.scope ) {\n\n\t\t\t\t\t\t// Capture the context ID, setting it first if necessary\n\t\t\t\t\t\tif ( ( nid = context.getAttribute( \"id\" ) ) ) {\n\t\t\t\t\t\t\tnid = jQuery.escapeSelector( nid );\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tcontext.setAttribute( \"id\", ( nid = expando ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prefix every selector in the list\n\t\t\t\t\tgroups = tokenize( selector );\n\t\t\t\t\ti = groups.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tgroups[ i ] = ( nid ? \"#\" + nid : \":scope\" ) + \" \" +\n\t\t\t\t\t\t\ttoSelector( groups[ i ] );\n\t\t\t\t\t}\n\t\t\t\t\tnewSelector = groups.join( \",\" );\n\t\t\t\t}\n\n\t\t\t\ttry {\n\t\t\t\t\tpush.apply( results,\n\t\t\t\t\t\tnewContext.querySelectorAll( newSelector )\n\t\t\t\t\t);\n\t\t\t\t\treturn results;\n\t\t\t\t} catch ( qsaError ) {\n\t\t\t\t\tnonnativeSelectorCache( selector, true );\n\t\t\t\t} finally {\n\t\t\t\t\tif ( nid === expando ) {\n\t\t\t\t\t\tcontext.removeAttribute( \"id\" );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// All others\n\treturn select( selector.replace( rtrimCSS, \"$1\" ), context, results, seed );\n}\n\n/**\n * Create key-value caches of limited size\n * @returns {function(string, object)} Returns the Object data after storing it on itself with\n *\tproperty name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n *\tdeleting the oldest entry\n */\nfunction createCache() {\n\tvar keys = [];\n\n\tfunction cache( key, value ) {\n\n\t\t// Use (key + \" \") to avoid collision with native prototype properties\n\t\t// (see https://github.com/jquery/sizzle/issues/157)\n\t\tif ( keys.push( key + \" \" ) > Expr.cacheLength ) {\n\n\t\t\t// Only keep the most recent entries\n\t\t\tdelete cache[ keys.shift() ];\n\t\t}\n\t\treturn ( cache[ key + \" \" ] = value );\n\t}\n\treturn cache;\n}\n\n/**\n * Mark a function for special use by jQuery selector module\n * @param {Function} fn The function to mark\n */\nfunction markFunction( fn ) {\n\tfn[ expando ] = true;\n\treturn fn;\n}\n\n/**\n * Support testing using an element\n * @param {Function} fn Passed the created element and returns a boolean result\n */\nfunction assert( fn ) {\n\tvar el = document.createElement( \"fieldset\" );\n\n\ttry {\n\t\treturn !!fn( el );\n\t} catch ( e ) {\n\t\treturn false;\n\t} finally {\n\n\t\t// Remove from its parent by default\n\t\tif ( el.parentNode ) {\n\t\t\tel.parentNode.removeChild( el );\n\t\t}\n\n\t\t// release memory in IE\n\t\tel = null;\n\t}\n}\n\n/**\n * Returns a function to use in pseudos for input types\n * @param {String} type\n */\nfunction createInputPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn nodeName( elem, \"input\" ) && elem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for buttons\n * @param {String} type\n */\nfunction createButtonPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn ( nodeName( elem, \"input\" ) || nodeName( elem, \"button\" ) ) &&\n\t\t\telem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for :enabled/:disabled\n * @param {Boolean} disabled true for :disabled; false for :enabled\n */\nfunction createDisabledPseudo( disabled ) {\n\n\t// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n\treturn function( elem ) {\n\n\t\t// Only certain elements can match :enabled or :disabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n\t\tif ( \"form\" in elem ) {\n\n\t\t\t// Check for inherited disabledness on relevant non-disabled elements:\n\t\t\t// * listed form-associated elements in a disabled fieldset\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#category-listed\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n\t\t\t// * option elements in a disabled optgroup\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n\t\t\t// All such elements have a \"form\" property.\n\t\t\tif ( elem.parentNode && elem.disabled === false ) {\n\n\t\t\t\t// Option elements defer to a parent optgroup if present\n\t\t\t\tif ( \"label\" in elem ) {\n\t\t\t\t\tif ( \"label\" in elem.parentNode ) {\n\t\t\t\t\t\treturn elem.parentNode.disabled === disabled;\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn elem.disabled === disabled;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Support: IE 6 - 11+\n\t\t\t\t// Use the isDisabled shortcut property to check for disabled fieldset ancestors\n\t\t\t\treturn elem.isDisabled === disabled ||\n\n\t\t\t\t\t// Where there is no isDisabled, check manually\n\t\t\t\t\telem.isDisabled !== !disabled &&\n\t\t\t\t\t\tinDisabledFieldset( elem ) === disabled;\n\t\t\t}\n\n\t\t\treturn elem.disabled === disabled;\n\n\t\t// Try to winnow out elements that can't be disabled before trusting the disabled property.\n\t\t// Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n\t\t// even exist on them, let alone have a boolean value.\n\t\t} else if ( \"label\" in elem ) {\n\t\t\treturn elem.disabled === disabled;\n\t\t}\n\n\t\t// Remaining elements are neither :enabled nor :disabled\n\t\treturn false;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for positionals\n * @param {Function} fn\n */\nfunction createPositionalPseudo( fn ) {\n\treturn markFunction( function( argument ) {\n\t\targument = +argument;\n\t\treturn markFunction( function( seed, matches ) {\n\t\t\tvar j,\n\t\t\t\tmatchIndexes = fn( [], seed.length, argument ),\n\t\t\t\ti = matchIndexes.length;\n\n\t\t\t// Match elements found at the specified indexes\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( seed[ ( j = matchIndexes[ i ] ) ] ) {\n\t\t\t\t\tseed[ j ] = !( matches[ j ] = seed[ j ] );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t} );\n}\n\n/**\n * Checks a node for validity as a jQuery selector context\n * @param {Element|Object=} context\n * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n */\nfunction testContext( context ) {\n\treturn context && typeof context.getElementsByTagName !== \"undefined\" && context;\n}\n\n/**\n * Sets document-related variables once based on the current document\n * @param {Element|Object} [node] An element or document object to use to set the document\n * @returns {Object} Returns the current document\n */\nfunction setDocument( node ) {\n\tvar subWindow,\n\t\tdoc = node ? node.ownerDocument || node : preferredDoc;\n\n\t// Return early if doc is invalid or already selected\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) {\n\t\treturn document;\n\t}\n\n\t// Update global variables\n\tdocument = doc;\n\tdocumentElement = document.documentElement;\n\tdocumentIsHTML = !jQuery.isXMLDoc( document );\n\n\t// Support: iOS 7 only, IE 9 - 11+\n\t// Older browsers didn't support unprefixed `matches`.\n\tmatches = documentElement.matches ||\n\t\tdocumentElement.webkitMatchesSelector ||\n\t\tdocumentElement.msMatchesSelector;\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Accessing iframe documents after unload throws \"permission denied\" errors\n\t// (see trac-13936).\n\t// Limit the fix to IE & Edge Legacy; despite Edge 15+ implementing `matches`,\n\t// all IE 9+ and Edge Legacy versions implement `msMatchesSelector` as well.\n\tif ( documentElement.msMatchesSelector &&\n\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tpreferredDoc != document &&\n\t\t( subWindow = document.defaultView ) && subWindow.top !== subWindow ) {\n\n\t\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t\tsubWindow.addEventListener( \"unload\", unloadHandler );\n\t}\n\n\t// Support: IE <10\n\t// Check if getElementById returns elements by name\n\t// The broken getElementById methods don't pick up programmatically-set names,\n\t// so use a roundabout getElementsByName test\n\tsupport.getById = assert( function( el ) {\n\t\tdocumentElement.appendChild( el ).id = jQuery.expando;\n\t\treturn !document.getElementsByName ||\n\t\t\t!document.getElementsByName( jQuery.expando ).length;\n\t} );\n\n\t// Support: IE 9 only\n\t// Check to see if it's possible to do matchesSelector\n\t// on a disconnected node.\n\tsupport.disconnectedMatch = assert( function( el ) {\n\t\treturn matches.call( el, \"*\" );\n\t} );\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// IE/Edge don't support the :scope pseudo-class.\n\tsupport.scope = assert( function() {\n\t\treturn document.querySelectorAll( \":scope\" );\n\t} );\n\n\t// Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only\n\t// Make sure the `:has()` argument is parsed unforgivingly.\n\t// We include `*` in the test to detect buggy implementations that are\n\t// _selectively_ forgiving (specifically when the list includes at least\n\t// one valid selector).\n\t// Note that we treat complete lack of support for `:has()` as if it were\n\t// spec-compliant support, which is fine because use of `:has()` in such\n\t// environments will fail in the qSA path and fall back to jQuery traversal\n\t// anyway.\n\tsupport.cssHas = assert( function() {\n\t\ttry {\n\t\t\tdocument.querySelector( \":has(*,:jqfake)\" );\n\t\t\treturn false;\n\t\t} catch ( e ) {\n\t\t\treturn true;\n\t\t}\n\t} );\n\n\t// ID filter and find\n\tif ( support.getById ) {\n\t\tExpr.filter.ID = function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn elem.getAttribute( \"id\" ) === attrId;\n\t\t\t};\n\t\t};\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar elem = context.getElementById( id );\n\t\t\t\treturn elem ? [ elem ] : [];\n\t\t\t}\n\t\t};\n\t} else {\n\t\tExpr.filter.ID =  function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\tvar node = typeof elem.getAttributeNode !== \"undefined\" &&\n\t\t\t\t\telem.getAttributeNode( \"id\" );\n\t\t\t\treturn node && node.value === attrId;\n\t\t\t};\n\t\t};\n\n\t\t// Support: IE 6 - 7 only\n\t\t// getElementById is not reliable as a find shortcut\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar node, i, elems,\n\t\t\t\t\telem = context.getElementById( id );\n\n\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t// Verify the id attribute\n\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t}\n\n\t\t\t\t\t// Fall back on getElementsByName\n\t\t\t\t\telems = context.getElementsByName( id );\n\t\t\t\t\ti = 0;\n\t\t\t\t\twhile ( ( elem = elems[ i++ ] ) ) {\n\t\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn [];\n\t\t\t}\n\t\t};\n\t}\n\n\t// Tag\n\tExpr.find.TAG = function( tag, context ) {\n\t\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\t\treturn context.getElementsByTagName( tag );\n\n\t\t// DocumentFragment nodes don't have gEBTN\n\t\t} else {\n\t\t\treturn context.querySelectorAll( tag );\n\t\t}\n\t};\n\n\t// Class\n\tExpr.find.CLASS = function( className, context ) {\n\t\tif ( typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML ) {\n\t\t\treturn context.getElementsByClassName( className );\n\t\t}\n\t};\n\n\t/* QSA/matchesSelector\n\t---------------------------------------------------------------------- */\n\n\t// QSA and matchesSelector support\n\n\trbuggyQSA = [];\n\n\t// Build QSA regex\n\t// Regex strategy adopted from Diego Perini\n\tassert( function( el ) {\n\n\t\tvar input;\n\n\t\tdocumentElement.appendChild( el ).innerHTML =\n\t\t\t\"<a id='\" + expando + \"' href='' disabled='disabled'></a>\" +\n\t\t\t\"<select id='\" + expando + \"-\\r\\\\' disabled='disabled'>\" +\n\t\t\t\"<option selected=''></option></select>\";\n\n\t\t// Support: iOS <=7 - 8 only\n\t\t// Boolean attributes and \"value\" are not treated correctly in some XML documents\n\t\tif ( !el.querySelectorAll( \"[selected]\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\" );\n\t\t}\n\n\t\t// Support: iOS <=7 - 8 only\n\t\tif ( !el.querySelectorAll( \"[id~=\" + expando + \"-]\" ).length ) {\n\t\t\trbuggyQSA.push( \"~=\" );\n\t\t}\n\n\t\t// Support: iOS 8 only\n\t\t// https://bugs.webkit.org/show_bug.cgi?id=136851\n\t\t// In-page `selector#id sibling-combinator selector` fails\n\t\tif ( !el.querySelectorAll( \"a#\" + expando + \"+*\" ).length ) {\n\t\t\trbuggyQSA.push( \".#.+[+~]\" );\n\t\t}\n\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tif ( !el.querySelectorAll( \":checked\" ).length ) {\n\t\t\trbuggyQSA.push( \":checked\" );\n\t\t}\n\n\t\t// Support: Windows 8 Native Apps\n\t\t// The type and name attributes are restricted during .innerHTML assignment\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"type\", \"hidden\" );\n\t\tel.appendChild( input ).setAttribute( \"name\", \"D\" );\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE's :disabled selector does not pick up the children of disabled fieldsets\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tdocumentElement.appendChild( el ).disabled = true;\n\t\tif ( el.querySelectorAll( \":disabled\" ).length !== 2 ) {\n\t\t\trbuggyQSA.push( \":enabled\", \":disabled\" );\n\t\t}\n\n\t\t// Support: IE 11+, Edge 15 - 18+\n\t\t// IE 11/Edge don't find elements on a `[name='']` query in some cases.\n\t\t// Adding a temporary attribute to the document before the selection works\n\t\t// around the issue.\n\t\t// Interestingly, IE 10 & older don't seem to have the issue.\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"name\", \"\" );\n\t\tel.appendChild( input );\n\t\tif ( !el.querySelectorAll( \"[name='']\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*name\" + whitespace + \"*=\" +\n\t\t\t\twhitespace + \"*(?:''|\\\"\\\")\" );\n\t\t}\n\t} );\n\n\tif ( !support.cssHas ) {\n\n\t\t// Support: Chrome 105 - 110+, Safari 15.4 - 16.3+\n\t\t// Our regular `try-catch` mechanism fails to detect natively-unsupported\n\t\t// pseudo-classes inside `:has()` (such as `:has(:contains(\"Foo\"))`)\n\t\t// in browsers that parse the `:has()` argument as a forgiving selector list.\n\t\t// https://drafts.csswg.org/selectors/#relational now requires the argument\n\t\t// to be parsed unforgivingly, but browsers have not yet fully adjusted.\n\t\trbuggyQSA.push( \":has\" );\n\t}\n\n\trbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( \"|\" ) );\n\n\t/* Sorting\n\t---------------------------------------------------------------------- */\n\n\t// Document order sorting\n\tsortOrder = function( a, b ) {\n\n\t\t// Flag for duplicate removal\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t\treturn 0;\n\t\t}\n\n\t\t// Sort on method existence if only one input has compareDocumentPosition\n\t\tvar compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n\t\tif ( compare ) {\n\t\t\treturn compare;\n\t\t}\n\n\t\t// Calculate position if both inputs belong to the same document\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tcompare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ?\n\t\t\ta.compareDocumentPosition( b ) :\n\n\t\t\t// Otherwise we know they are disconnected\n\t\t\t1;\n\n\t\t// Disconnected nodes\n\t\tif ( compare & 1 ||\n\t\t\t( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) {\n\n\t\t\t// Choose the first element that is related to our preferred document\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( a === document || a.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, a ) ) {\n\t\t\t\treturn -1;\n\t\t\t}\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( b === document || b.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, b ) ) {\n\t\t\t\treturn 1;\n\t\t\t}\n\n\t\t\t// Maintain original order\n\t\t\treturn sortInput ?\n\t\t\t\t( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :\n\t\t\t\t0;\n\t\t}\n\n\t\treturn compare & 4 ? -1 : 1;\n\t};\n\n\treturn document;\n}\n\nfind.matches = function( expr, elements ) {\n\treturn find( expr, null, null, elements );\n};\n\nfind.matchesSelector = function( elem, expr ) {\n\tsetDocument( elem );\n\n\tif ( documentIsHTML &&\n\t\t!nonnativeSelectorCache[ expr + \" \" ] &&\n\t\t( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) {\n\n\t\ttry {\n\t\t\tvar ret = matches.call( elem, expr );\n\n\t\t\t// IE 9's matchesSelector returns false on disconnected nodes\n\t\t\tif ( ret || support.disconnectedMatch ||\n\n\t\t\t\t\t// As well, disconnected nodes are said to be in a document\n\t\t\t\t\t// fragment in IE 9\n\t\t\t\t\telem.document && elem.document.nodeType !== 11 ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\t\t} catch ( e ) {\n\t\t\tnonnativeSelectorCache( expr, true );\n\t\t}\n\t}\n\n\treturn find( expr, document, null, [ elem ] ).length > 0;\n};\n\nfind.contains = function( context, elem ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( context.ownerDocument || context ) != document ) {\n\t\tsetDocument( context );\n\t}\n\treturn jQuery.contains( context, elem );\n};\n\n\nfind.attr = function( elem, name ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( elem.ownerDocument || elem ) != document ) {\n\t\tsetDocument( elem );\n\t}\n\n\tvar fn = Expr.attrHandle[ name.toLowerCase() ],\n\n\t\t// Don't get fooled by Object.prototype properties (see trac-13807)\n\t\tval = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?\n\t\t\tfn( elem, name, !documentIsHTML ) :\n\t\t\tundefined;\n\n\tif ( val !== undefined ) {\n\t\treturn val;\n\t}\n\n\treturn elem.getAttribute( name );\n};\n\nfind.error = function( msg ) {\n\tthrow new Error( \"Syntax error, unrecognized expression: \" + msg );\n};\n\n/**\n * Document sorting and removing duplicates\n * @param {ArrayLike} results\n */\njQuery.uniqueSort = function( results ) {\n\tvar elem,\n\t\tduplicates = [],\n\t\tj = 0,\n\t\ti = 0;\n\n\t// Unless we *know* we can detect duplicates, assume their presence\n\t//\n\t// Support: Android <=4.0+\n\t// Testing for detecting duplicates is unpredictable so instead assume we can't\n\t// depend on duplicate detection in all browsers without a stable sort.\n\thasDuplicate = !support.sortStable;\n\tsortInput = !support.sortStable && slice.call( results, 0 );\n\tsort.call( results, sortOrder );\n\n\tif ( hasDuplicate ) {\n\t\twhile ( ( elem = results[ i++ ] ) ) {\n\t\t\tif ( elem === results[ i ] ) {\n\t\t\t\tj = duplicates.push( i );\n\t\t\t}\n\t\t}\n\t\twhile ( j-- ) {\n\t\t\tsplice.call( results, duplicates[ j ], 1 );\n\t\t}\n\t}\n\n\t// Clear input after sorting to release objects\n\t// See https://github.com/jquery/sizzle/pull/225\n\tsortInput = null;\n\n\treturn results;\n};\n\njQuery.fn.uniqueSort = function() {\n\treturn this.pushStack( jQuery.uniqueSort( slice.apply( this ) ) );\n};\n\nExpr = jQuery.expr = {\n\n\t// Can be adjusted by the user\n\tcacheLength: 50,\n\n\tcreatePseudo: markFunction,\n\n\tmatch: matchExpr,\n\n\tattrHandle: {},\n\n\tfind: {},\n\n\trelative: {\n\t\t\">\": { dir: \"parentNode\", first: true },\n\t\t\" \": { dir: \"parentNode\" },\n\t\t\"+\": { dir: \"previousSibling\", first: true },\n\t\t\"~\": { dir: \"previousSibling\" }\n\t},\n\n\tpreFilter: {\n\t\tATTR: function( match ) {\n\t\t\tmatch[ 1 ] = match[ 1 ].replace( runescape, funescape );\n\n\t\t\t// Move the given value to match[3] whether quoted or unquoted\n\t\t\tmatch[ 3 ] = ( match[ 3 ] || match[ 4 ] || match[ 5 ] || \"\" )\n\t\t\t\t.replace( runescape, funescape );\n\n\t\t\tif ( match[ 2 ] === \"~=\" ) {\n\t\t\t\tmatch[ 3 ] = \" \" + match[ 3 ] + \" \";\n\t\t\t}\n\n\t\t\treturn match.slice( 0, 4 );\n\t\t},\n\n\t\tCHILD: function( match ) {\n\n\t\t\t/* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/\n\t\t\tmatch[ 1 ] = match[ 1 ].toLowerCase();\n\n\t\t\tif ( match[ 1 ].slice( 0, 3 ) === \"nth\" ) {\n\n\t\t\t\t// nth-* requires argument\n\t\t\t\tif ( !match[ 3 ] ) {\n\t\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t\t}\n\n\t\t\t\t// numeric x and y parameters for Expr.filter.CHILD\n\t\t\t\t// remember that false/true cast respectively to 0/1\n\t\t\t\tmatch[ 4 ] = +( match[ 4 ] ?\n\t\t\t\t\tmatch[ 5 ] + ( match[ 6 ] || 1 ) :\n\t\t\t\t\t2 * ( match[ 3 ] === \"even\" || match[ 3 ] === \"odd\" )\n\t\t\t\t);\n\t\t\t\tmatch[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === \"odd\" );\n\n\t\t\t// other types prohibit arguments\n\t\t\t} else if ( match[ 3 ] ) {\n\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t}\n\n\t\t\treturn match;\n\t\t},\n\n\t\tPSEUDO: function( match ) {\n\t\t\tvar excess,\n\t\t\t\tunquoted = !match[ 6 ] && match[ 2 ];\n\n\t\t\tif ( matchExpr.CHILD.test( match[ 0 ] ) ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// Accept quoted arguments as-is\n\t\t\tif ( match[ 3 ] ) {\n\t\t\t\tmatch[ 2 ] = match[ 4 ] || match[ 5 ] || \"\";\n\n\t\t\t// Strip excess characters from unquoted arguments\n\t\t\t} else if ( unquoted && rpseudo.test( unquoted ) &&\n\n\t\t\t\t// Get excess from tokenize (recursively)\n\t\t\t\t( excess = tokenize( unquoted, true ) ) &&\n\n\t\t\t\t// advance to the next closing parenthesis\n\t\t\t\t( excess = unquoted.indexOf( \")\", unquoted.length - excess ) - unquoted.length ) ) {\n\n\t\t\t\t// excess is a negative index\n\t\t\t\tmatch[ 0 ] = match[ 0 ].slice( 0, excess );\n\t\t\t\tmatch[ 2 ] = unquoted.slice( 0, excess );\n\t\t\t}\n\n\t\t\t// Return only captures needed by the pseudo filter method (type and argument)\n\t\t\treturn match.slice( 0, 3 );\n\t\t}\n\t},\n\n\tfilter: {\n\n\t\tTAG: function( nodeNameSelector ) {\n\t\t\tvar expectedNodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn nodeNameSelector === \"*\" ?\n\t\t\t\tfunction() {\n\t\t\t\t\treturn true;\n\t\t\t\t} :\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn nodeName( elem, expectedNodeName );\n\t\t\t\t};\n\t\t},\n\n\t\tCLASS: function( className ) {\n\t\t\tvar pattern = classCache[ className + \" \" ];\n\n\t\t\treturn pattern ||\n\t\t\t\t( pattern = new RegExp( \"(^|\" + whitespace + \")\" + className +\n\t\t\t\t\t\"(\" + whitespace + \"|$)\" ) ) &&\n\t\t\t\tclassCache( className, function( elem ) {\n\t\t\t\t\treturn pattern.test(\n\t\t\t\t\t\ttypeof elem.className === \"string\" && elem.className ||\n\t\t\t\t\t\t\ttypeof elem.getAttribute !== \"undefined\" &&\n\t\t\t\t\t\t\t\telem.getAttribute( \"class\" ) ||\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t);\n\t\t\t\t} );\n\t\t},\n\n\t\tATTR: function( name, operator, check ) {\n\t\t\treturn function( elem ) {\n\t\t\t\tvar result = find.attr( elem, name );\n\n\t\t\t\tif ( result == null ) {\n\t\t\t\t\treturn operator === \"!=\";\n\t\t\t\t}\n\t\t\t\tif ( !operator ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\tresult += \"\";\n\n\t\t\t\tif ( operator === \"=\" ) {\n\t\t\t\t\treturn result === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"!=\" ) {\n\t\t\t\t\treturn result !== check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"^=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) === 0;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"*=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"$=\" ) {\n\t\t\t\t\treturn check && result.slice( -check.length ) === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"~=\" ) {\n\t\t\t\t\treturn ( \" \" + result.replace( rwhitespace, \" \" ) + \" \" )\n\t\t\t\t\t\t.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"|=\" ) {\n\t\t\t\t\treturn result === check || result.slice( 0, check.length + 1 ) === check + \"-\";\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\t\t\t};\n\t\t},\n\n\t\tCHILD: function( type, what, _argument, first, last ) {\n\t\t\tvar simple = type.slice( 0, 3 ) !== \"nth\",\n\t\t\t\tforward = type.slice( -4 ) !== \"last\",\n\t\t\t\tofType = what === \"of-type\";\n\n\t\t\treturn first === 1 && last === 0 ?\n\n\t\t\t\t// Shortcut for :nth-*(n)\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn !!elem.parentNode;\n\t\t\t\t} :\n\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tvar cache, outerCache, node, nodeIndex, start,\n\t\t\t\t\t\tdir = simple !== forward ? \"nextSibling\" : \"previousSibling\",\n\t\t\t\t\t\tparent = elem.parentNode,\n\t\t\t\t\t\tname = ofType && elem.nodeName.toLowerCase(),\n\t\t\t\t\t\tuseCache = !xml && !ofType,\n\t\t\t\t\t\tdiff = false;\n\n\t\t\t\t\tif ( parent ) {\n\n\t\t\t\t\t\t// :(first|last|only)-(child|of-type)\n\t\t\t\t\t\tif ( simple ) {\n\t\t\t\t\t\t\twhile ( dir ) {\n\t\t\t\t\t\t\t\tnode = elem;\n\t\t\t\t\t\t\t\twhile ( ( node = node[ dir ] ) ) {\n\t\t\t\t\t\t\t\t\tif ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) {\n\n\t\t\t\t\t\t\t\t\t\treturn false;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t// Reverse direction for :only-* (if we haven't yet done so)\n\t\t\t\t\t\t\t\tstart = dir = type === \"only\" && !start && \"nextSibling\";\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tstart = [ forward ? parent.firstChild : parent.lastChild ];\n\n\t\t\t\t\t\t// non-xml :nth-child(...) stores cache data on `parent`\n\t\t\t\t\t\tif ( forward && useCache ) {\n\n\t\t\t\t\t\t\t// Seek `elem` from a previously-cached index\n\t\t\t\t\t\t\touterCache = parent[ expando ] || ( parent[ expando ] = {} );\n\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\tdiff = nodeIndex && cache[ 2 ];\n\t\t\t\t\t\t\tnode = nodeIndex && parent.childNodes[ nodeIndex ];\n\n\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\n\t\t\t\t\t\t\t\t// Fallback to seeking `elem` from the start\n\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t// When found, cache indexes on `parent` and break\n\t\t\t\t\t\t\t\tif ( node.nodeType === 1 && ++diff && node === elem ) {\n\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, nodeIndex, diff ];\n\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Use previously-cached element index if available\n\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\t\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\t\tdiff = nodeIndex;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// xml :nth-child(...)\n\t\t\t\t\t\t\t// or :nth-last-child(...) or :nth(-last)?-of-type(...)\n\t\t\t\t\t\t\tif ( diff === false ) {\n\n\t\t\t\t\t\t\t\t// Use the same loop as above to seek `elem` from the start\n\t\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\t\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t\tif ( ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) &&\n\t\t\t\t\t\t\t\t\t\t++diff ) {\n\n\t\t\t\t\t\t\t\t\t\t// Cache the index of each encountered element\n\t\t\t\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\t\t\t\touterCache = node[ expando ] ||\n\t\t\t\t\t\t\t\t\t\t\t\t( node[ expando ] = {} );\n\t\t\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, diff ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\tif ( node === elem ) {\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Incorporate the offset, then check against cycle size\n\t\t\t\t\t\tdiff -= last;\n\t\t\t\t\t\treturn diff === first || ( diff % first === 0 && diff / first >= 0 );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t},\n\n\t\tPSEUDO: function( pseudo, argument ) {\n\n\t\t\t// pseudo-class names are case-insensitive\n\t\t\t// https://www.w3.org/TR/selectors/#pseudo-classes\n\t\t\t// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n\t\t\t// Remember that setFilters inherits from pseudos\n\t\t\tvar args,\n\t\t\t\tfn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||\n\t\t\t\t\tfind.error( \"unsupported pseudo: \" + pseudo );\n\n\t\t\t// The user may use createPseudo to indicate that\n\t\t\t// arguments are needed to create the filter function\n\t\t\t// just as jQuery does\n\t\t\tif ( fn[ expando ] ) {\n\t\t\t\treturn fn( argument );\n\t\t\t}\n\n\t\t\t// But maintain support for old signatures\n\t\t\tif ( fn.length > 1 ) {\n\t\t\t\targs = [ pseudo, pseudo, \"\", argument ];\n\t\t\t\treturn Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?\n\t\t\t\t\tmarkFunction( function( seed, matches ) {\n\t\t\t\t\t\tvar idx,\n\t\t\t\t\t\t\tmatched = fn( seed, argument ),\n\t\t\t\t\t\t\ti = matched.length;\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tidx = indexOf.call( seed, matched[ i ] );\n\t\t\t\t\t\t\tseed[ idx ] = !( matches[ idx ] = matched[ i ] );\n\t\t\t\t\t\t}\n\t\t\t\t\t} ) :\n\t\t\t\t\tfunction( elem ) {\n\t\t\t\t\t\treturn fn( elem, 0, args );\n\t\t\t\t\t};\n\t\t\t}\n\n\t\t\treturn fn;\n\t\t}\n\t},\n\n\tpseudos: {\n\n\t\t// Potentially complex pseudos\n\t\tnot: markFunction( function( selector ) {\n\n\t\t\t// Trim the selector passed to compile\n\t\t\t// to avoid treating leading and trailing\n\t\t\t// spaces as combinators\n\t\t\tvar input = [],\n\t\t\t\tresults = [],\n\t\t\t\tmatcher = compile( selector.replace( rtrimCSS, \"$1\" ) );\n\n\t\t\treturn matcher[ expando ] ?\n\t\t\t\tmarkFunction( function( seed, matches, _context, xml ) {\n\t\t\t\t\tvar elem,\n\t\t\t\t\t\tunmatched = matcher( seed, null, xml, [] ),\n\t\t\t\t\t\ti = seed.length;\n\n\t\t\t\t\t// Match elements unmatched by `matcher`\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\t\t\t\t\tseed[ i ] = !( matches[ i ] = elem );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} ) :\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tinput[ 0 ] = elem;\n\t\t\t\t\tmatcher( input, null, xml, results );\n\n\t\t\t\t\t// Don't keep the element\n\t\t\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\t\t\tinput[ 0 ] = null;\n\t\t\t\t\treturn !results.pop();\n\t\t\t\t};\n\t\t} ),\n\n\t\thas: markFunction( function( selector ) {\n\t\t\treturn function( elem ) {\n\t\t\t\treturn find( selector, elem ).length > 0;\n\t\t\t};\n\t\t} ),\n\n\t\tcontains: markFunction( function( text ) {\n\t\t\ttext = text.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn ( elem.textContent || jQuery.text( elem ) ).indexOf( text ) > -1;\n\t\t\t};\n\t\t} ),\n\n\t\t// \"Whether an element is represented by a :lang() selector\n\t\t// is based solely on the element's language value\n\t\t// being equal to the identifier C,\n\t\t// or beginning with the identifier C immediately followed by \"-\".\n\t\t// The matching of C against the element's language value is performed case-insensitively.\n\t\t// The identifier C does not have to be a valid language name.\"\n\t\t// https://www.w3.org/TR/selectors/#lang-pseudo\n\t\tlang: markFunction( function( lang ) {\n\n\t\t\t// lang value must be a valid identifier\n\t\t\tif ( !ridentifier.test( lang || \"\" ) ) {\n\t\t\t\tfind.error( \"unsupported lang: \" + lang );\n\t\t\t}\n\t\t\tlang = lang.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn function( elem ) {\n\t\t\t\tvar elemLang;\n\t\t\t\tdo {\n\t\t\t\t\tif ( ( elemLang = documentIsHTML ?\n\t\t\t\t\t\telem.lang :\n\t\t\t\t\t\telem.getAttribute( \"xml:lang\" ) || elem.getAttribute( \"lang\" ) ) ) {\n\n\t\t\t\t\t\telemLang = elemLang.toLowerCase();\n\t\t\t\t\t\treturn elemLang === lang || elemLang.indexOf( lang + \"-\" ) === 0;\n\t\t\t\t\t}\n\t\t\t\t} while ( ( elem = elem.parentNode ) && elem.nodeType === 1 );\n\t\t\t\treturn false;\n\t\t\t};\n\t\t} ),\n\n\t\t// Miscellaneous\n\t\ttarget: function( elem ) {\n\t\t\tvar hash = window.location && window.location.hash;\n\t\t\treturn hash && hash.slice( 1 ) === elem.id;\n\t\t},\n\n\t\troot: function( elem ) {\n\t\t\treturn elem === documentElement;\n\t\t},\n\n\t\tfocus: function( elem ) {\n\t\t\treturn elem === safeActiveElement() &&\n\t\t\t\tdocument.hasFocus() &&\n\t\t\t\t!!( elem.type || elem.href || ~elem.tabIndex );\n\t\t},\n\n\t\t// Boolean properties\n\t\tenabled: createDisabledPseudo( false ),\n\t\tdisabled: createDisabledPseudo( true ),\n\n\t\tchecked: function( elem ) {\n\n\t\t\t// In CSS3, :checked should return both checked and selected elements\n\t\t\t// https://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n\t\t\treturn ( nodeName( elem, \"input\" ) && !!elem.checked ) ||\n\t\t\t\t( nodeName( elem, \"option\" ) && !!elem.selected );\n\t\t},\n\n\t\tselected: function( elem ) {\n\n\t\t\t// Support: IE <=11+\n\t\t\t// Accessing the selectedIndex property\n\t\t\t// forces the browser to treat the default option as\n\t\t\t// selected when in an optgroup.\n\t\t\tif ( elem.parentNode ) {\n\t\t\t\t// eslint-disable-next-line no-unused-expressions\n\t\t\t\telem.parentNode.selectedIndex;\n\t\t\t}\n\n\t\t\treturn elem.selected === true;\n\t\t},\n\n\t\t// Contents\n\t\tempty: function( elem ) {\n\n\t\t\t// https://www.w3.org/TR/selectors/#empty-pseudo\n\t\t\t// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n\t\t\t//   but not by others (comment: 8; processing instruction: 7; etc.)\n\t\t\t// nodeType < 6 works because attributes (2) do not appear as children\n\t\t\tfor ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {\n\t\t\t\tif ( elem.nodeType < 6 ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t},\n\n\t\tparent: function( elem ) {\n\t\t\treturn !Expr.pseudos.empty( elem );\n\t\t},\n\n\t\t// Element/input types\n\t\theader: function( elem ) {\n\t\t\treturn rheader.test( elem.nodeName );\n\t\t},\n\n\t\tinput: function( elem ) {\n\t\t\treturn rinputs.test( elem.nodeName );\n\t\t},\n\n\t\tbutton: function( elem ) {\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"button\" ||\n\t\t\t\tnodeName( elem, \"button\" );\n\t\t},\n\n\t\ttext: function( elem ) {\n\t\t\tvar attr;\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"text\" &&\n\n\t\t\t\t// Support: IE <10 only\n\t\t\t\t// New HTML5 attribute values (e.g., \"search\") appear\n\t\t\t\t// with elem.type === \"text\"\n\t\t\t\t( ( attr = elem.getAttribute( \"type\" ) ) == null ||\n\t\t\t\t\tattr.toLowerCase() === \"text\" );\n\t\t},\n\n\t\t// Position-in-collection\n\t\tfirst: createPositionalPseudo( function() {\n\t\t\treturn [ 0 ];\n\t\t} ),\n\n\t\tlast: createPositionalPseudo( function( _matchIndexes, length ) {\n\t\t\treturn [ length - 1 ];\n\t\t} ),\n\n\t\teq: createPositionalPseudo( function( _matchIndexes, length, argument ) {\n\t\t\treturn [ argument < 0 ? argument + length : argument ];\n\t\t} ),\n\n\t\teven: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\todd: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 1;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tlt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i;\n\n\t\t\tif ( argument < 0 ) {\n\t\t\t\ti = argument + length;\n\t\t\t} else if ( argument > length ) {\n\t\t\t\ti = length;\n\t\t\t} else {\n\t\t\t\ti = argument;\n\t\t\t}\n\n\t\t\tfor ( ; --i >= 0; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tgt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i = argument < 0 ? argument + length : argument;\n\t\t\tfor ( ; ++i < length; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} )\n\t}\n};\n\nExpr.pseudos.nth = Expr.pseudos.eq;\n\n// Add button/input type pseudos\nfor ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {\n\tExpr.pseudos[ i ] = createInputPseudo( i );\n}\nfor ( i in { submit: true, reset: true } ) {\n\tExpr.pseudos[ i ] = createButtonPseudo( i );\n}\n\n// Easy API for creating new setFilters\nfunction setFilters() {}\nsetFilters.prototype = Expr.filters = Expr.pseudos;\nExpr.setFilters = new setFilters();\n\nfunction tokenize( selector, parseOnly ) {\n\tvar matched, match, tokens, type,\n\t\tsoFar, groups, preFilters,\n\t\tcached = tokenCache[ selector + \" \" ];\n\n\tif ( cached ) {\n\t\treturn parseOnly ? 0 : cached.slice( 0 );\n\t}\n\n\tsoFar = selector;\n\tgroups = [];\n\tpreFilters = Expr.preFilter;\n\n\twhile ( soFar ) {\n\n\t\t// Comma and first run\n\t\tif ( !matched || ( match = rcomma.exec( soFar ) ) ) {\n\t\t\tif ( match ) {\n\n\t\t\t\t// Don't consume trailing commas as valid\n\t\t\t\tsoFar = soFar.slice( match[ 0 ].length ) || soFar;\n\t\t\t}\n\t\t\tgroups.push( ( tokens = [] ) );\n\t\t}\n\n\t\tmatched = false;\n\n\t\t// Combinators\n\t\tif ( ( match = rleadingCombinator.exec( soFar ) ) ) {\n\t\t\tmatched = match.shift();\n\t\t\ttokens.push( {\n\t\t\t\tvalue: matched,\n\n\t\t\t\t// Cast descendant combinators to space\n\t\t\t\ttype: match[ 0 ].replace( rtrimCSS, \" \" )\n\t\t\t} );\n\t\t\tsoFar = soFar.slice( matched.length );\n\t\t}\n\n\t\t// Filters\n\t\tfor ( type in Expr.filter ) {\n\t\t\tif ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] ||\n\t\t\t\t( match = preFilters[ type ]( match ) ) ) ) {\n\t\t\t\tmatched = match.shift();\n\t\t\t\ttokens.push( {\n\t\t\t\t\tvalue: matched,\n\t\t\t\t\ttype: type,\n\t\t\t\t\tmatches: match\n\t\t\t\t} );\n\t\t\t\tsoFar = soFar.slice( matched.length );\n\t\t\t}\n\t\t}\n\n\t\tif ( !matched ) {\n\t\t\tbreak;\n\t\t}\n\t}\n\n\t// Return the length of the invalid excess\n\t// if we're just parsing\n\t// Otherwise, throw an error or return tokens\n\tif ( parseOnly ) {\n\t\treturn soFar.length;\n\t}\n\n\treturn soFar ?\n\t\tfind.error( selector ) :\n\n\t\t// Cache the tokens\n\t\ttokenCache( selector, groups ).slice( 0 );\n}\n\nfunction toSelector( tokens ) {\n\tvar i = 0,\n\t\tlen = tokens.length,\n\t\tselector = \"\";\n\tfor ( ; i < len; i++ ) {\n\t\tselector += tokens[ i ].value;\n\t}\n\treturn selector;\n}\n\nfunction addCombinator( matcher, combinator, base ) {\n\tvar dir = combinator.dir,\n\t\tskip = combinator.next,\n\t\tkey = skip || dir,\n\t\tcheckNonElements = base && key === \"parentNode\",\n\t\tdoneName = done++;\n\n\treturn combinator.first ?\n\n\t\t// Check against closest ancestor/preceding element\n\t\tfunction( elem, context, xml ) {\n\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\treturn matcher( elem, context, xml );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t} :\n\n\t\t// Check against all ancestor/preceding elements\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar oldCache, outerCache,\n\t\t\t\tnewCache = [ dirruns, doneName ];\n\n\t\t\t// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n\t\t\tif ( xml ) {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\tif ( matcher( elem, context, xml ) ) {\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\n\t\t\t\t\t\tif ( skip && nodeName( elem, skip ) ) {\n\t\t\t\t\t\t\telem = elem[ dir ] || elem;\n\t\t\t\t\t\t} else if ( ( oldCache = outerCache[ key ] ) &&\n\t\t\t\t\t\t\toldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {\n\n\t\t\t\t\t\t\t// Assign to newCache so results back-propagate to previous elements\n\t\t\t\t\t\t\treturn ( newCache[ 2 ] = oldCache[ 2 ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Reuse newcache so results back-propagate to previous elements\n\t\t\t\t\t\t\touterCache[ key ] = newCache;\n\n\t\t\t\t\t\t\t// A match means we're done; a fail means we have to keep checking\n\t\t\t\t\t\t\tif ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) {\n\t\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t};\n}\n\nfunction elementMatcher( matchers ) {\n\treturn matchers.length > 1 ?\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar i = matchers.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( !matchers[ i ]( elem, context, xml ) ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t} :\n\t\tmatchers[ 0 ];\n}\n\nfunction multipleContexts( selector, contexts, results ) {\n\tvar i = 0,\n\t\tlen = contexts.length;\n\tfor ( ; i < len; i++ ) {\n\t\tfind( selector, contexts[ i ], results );\n\t}\n\treturn results;\n}\n\nfunction condense( unmatched, map, filter, context, xml ) {\n\tvar elem,\n\t\tnewUnmatched = [],\n\t\ti = 0,\n\t\tlen = unmatched.length,\n\t\tmapped = map != null;\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\tif ( !filter || filter( elem, context, xml ) ) {\n\t\t\t\tnewUnmatched.push( elem );\n\t\t\t\tif ( mapped ) {\n\t\t\t\t\tmap.push( i );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn newUnmatched;\n}\n\nfunction setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {\n\tif ( postFilter && !postFilter[ expando ] ) {\n\t\tpostFilter = setMatcher( postFilter );\n\t}\n\tif ( postFinder && !postFinder[ expando ] ) {\n\t\tpostFinder = setMatcher( postFinder, postSelector );\n\t}\n\treturn markFunction( function( seed, results, context, xml ) {\n\t\tvar temp, i, elem, matcherOut,\n\t\t\tpreMap = [],\n\t\t\tpostMap = [],\n\t\t\tpreexisting = results.length,\n\n\t\t\t// Get initial elements from seed or context\n\t\t\telems = seed ||\n\t\t\t\tmultipleContexts( selector || \"*\",\n\t\t\t\t\tcontext.nodeType ? [ context ] : context, [] ),\n\n\t\t\t// Prefilter to get matcher input, preserving a map for seed-results synchronization\n\t\t\tmatcherIn = preFilter && ( seed || !selector ) ?\n\t\t\t\tcondense( elems, preMap, preFilter, context, xml ) :\n\t\t\t\telems;\n\n\t\tif ( matcher ) {\n\n\t\t\t// If we have a postFinder, or filtered seed, or non-seed postFilter\n\t\t\t// or preexisting results,\n\t\t\tmatcherOut = postFinder || ( seed ? preFilter : preexisting || postFilter ) ?\n\n\t\t\t\t// ...intermediate processing is necessary\n\t\t\t\t[] :\n\n\t\t\t\t// ...otherwise use results directly\n\t\t\t\tresults;\n\n\t\t\t// Find primary matches\n\t\t\tmatcher( matcherIn, matcherOut, context, xml );\n\t\t} else {\n\t\t\tmatcherOut = matcherIn;\n\t\t}\n\n\t\t// Apply postFilter\n\t\tif ( postFilter ) {\n\t\t\ttemp = condense( matcherOut, postMap );\n\t\t\tpostFilter( temp, [], context, xml );\n\n\t\t\t// Un-match failing elements by moving them back to matcherIn\n\t\t\ti = temp.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( ( elem = temp[ i ] ) ) {\n\t\t\t\t\tmatcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif ( seed ) {\n\t\t\tif ( postFinder || preFilter ) {\n\t\t\t\tif ( postFinder ) {\n\n\t\t\t\t\t// Get the final matcherOut by condensing this intermediate into postFinder contexts\n\t\t\t\t\ttemp = [];\n\t\t\t\t\ti = matcherOut.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) ) {\n\n\t\t\t\t\t\t\t// Restore matcherIn since elem is not yet a final match\n\t\t\t\t\t\t\ttemp.push( ( matcherIn[ i ] = elem ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tpostFinder( null, ( matcherOut = [] ), temp, xml );\n\t\t\t\t}\n\n\t\t\t\t// Move matched elements from seed to results to keep them synchronized\n\t\t\t\ti = matcherOut.length;\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) &&\n\t\t\t\t\t\t( temp = postFinder ? indexOf.call( seed, elem ) : preMap[ i ] ) > -1 ) {\n\n\t\t\t\t\t\tseed[ temp ] = !( results[ temp ] = elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Add elements to results, through postFinder if defined\n\t\t} else {\n\t\t\tmatcherOut = condense(\n\t\t\t\tmatcherOut === results ?\n\t\t\t\t\tmatcherOut.splice( preexisting, matcherOut.length ) :\n\t\t\t\t\tmatcherOut\n\t\t\t);\n\t\t\tif ( postFinder ) {\n\t\t\t\tpostFinder( null, results, matcherOut, xml );\n\t\t\t} else {\n\t\t\t\tpush.apply( results, matcherOut );\n\t\t\t}\n\t\t}\n\t} );\n}\n\nfunction matcherFromTokens( tokens ) {\n\tvar checkContext, matcher, j,\n\t\tlen = tokens.length,\n\t\tleadingRelative = Expr.relative[ tokens[ 0 ].type ],\n\t\timplicitRelative = leadingRelative || Expr.relative[ \" \" ],\n\t\ti = leadingRelative ? 1 : 0,\n\n\t\t// The foundational matcher ensures that elements are reachable from top-level context(s)\n\t\tmatchContext = addCombinator( function( elem ) {\n\t\t\treturn elem === checkContext;\n\t\t}, implicitRelative, true ),\n\t\tmatchAnyContext = addCombinator( function( elem ) {\n\t\t\treturn indexOf.call( checkContext, elem ) > -1;\n\t\t}, implicitRelative, true ),\n\t\tmatchers = [ function( elem, context, xml ) {\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tvar ret = ( !leadingRelative && ( xml || context != outermostContext ) ) || (\n\t\t\t\t( checkContext = context ).nodeType ?\n\t\t\t\t\tmatchContext( elem, context, xml ) :\n\t\t\t\t\tmatchAnyContext( elem, context, xml ) );\n\n\t\t\t// Avoid hanging onto element\n\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\tcheckContext = null;\n\t\t\treturn ret;\n\t\t} ];\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) {\n\t\t\tmatchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];\n\t\t} else {\n\t\t\tmatcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches );\n\n\t\t\t// Return special upon seeing a positional matcher\n\t\t\tif ( matcher[ expando ] ) {\n\n\t\t\t\t// Find the next relative operator (if any) for proper handling\n\t\t\t\tj = ++i;\n\t\t\t\tfor ( ; j < len; j++ ) {\n\t\t\t\t\tif ( Expr.relative[ tokens[ j ].type ] ) {\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn setMatcher(\n\t\t\t\t\ti > 1 && elementMatcher( matchers ),\n\t\t\t\t\ti > 1 && toSelector(\n\n\t\t\t\t\t\t// If the preceding token was a descendant combinator, insert an implicit any-element `*`\n\t\t\t\t\t\ttokens.slice( 0, i - 1 )\n\t\t\t\t\t\t\t.concat( { value: tokens[ i - 2 ].type === \" \" ? \"*\" : \"\" } )\n\t\t\t\t\t).replace( rtrimCSS, \"$1\" ),\n\t\t\t\t\tmatcher,\n\t\t\t\t\ti < j && matcherFromTokens( tokens.slice( i, j ) ),\n\t\t\t\t\tj < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ),\n\t\t\t\t\tj < len && toSelector( tokens )\n\t\t\t\t);\n\t\t\t}\n\t\t\tmatchers.push( matcher );\n\t\t}\n\t}\n\n\treturn elementMatcher( matchers );\n}\n\nfunction matcherFromGroupMatchers( elementMatchers, setMatchers ) {\n\tvar bySet = setMatchers.length > 0,\n\t\tbyElement = elementMatchers.length > 0,\n\t\tsuperMatcher = function( seed, context, xml, results, outermost ) {\n\t\t\tvar elem, j, matcher,\n\t\t\t\tmatchedCount = 0,\n\t\t\t\ti = \"0\",\n\t\t\t\tunmatched = seed && [],\n\t\t\t\tsetMatched = [],\n\t\t\t\tcontextBackup = outermostContext,\n\n\t\t\t\t// We must always have either seed elements or outermost context\n\t\t\t\telems = seed || byElement && Expr.find.TAG( \"*\", outermost ),\n\n\t\t\t\t// Use integer dirruns iff this is the outermost matcher\n\t\t\t\tdirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ),\n\t\t\t\tlen = elems.length;\n\n\t\t\tif ( outermost ) {\n\n\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\toutermostContext = context == document || context || outermost;\n\t\t\t}\n\n\t\t\t// Add elements passing elementMatchers directly to results\n\t\t\t// Support: iOS <=7 - 9 only\n\t\t\t// Tolerate NodeList properties (IE: \"length\"; Safari: <number>) matching\n\t\t\t// elements by id. (see trac-14142)\n\t\t\tfor ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) {\n\t\t\t\tif ( byElement && elem ) {\n\t\t\t\t\tj = 0;\n\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( !context && elem.ownerDocument != document ) {\n\t\t\t\t\t\tsetDocument( elem );\n\t\t\t\t\t\txml = !documentIsHTML;\n\t\t\t\t\t}\n\t\t\t\t\twhile ( ( matcher = elementMatchers[ j++ ] ) ) {\n\t\t\t\t\t\tif ( matcher( elem, context || document, xml ) ) {\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( outermost ) {\n\t\t\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Track unmatched elements for set filters\n\t\t\t\tif ( bySet ) {\n\n\t\t\t\t\t// They will have gone through all possible matchers\n\t\t\t\t\tif ( ( elem = !matcher && elem ) ) {\n\t\t\t\t\t\tmatchedCount--;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Lengthen the array for every element, matched or not\n\t\t\t\t\tif ( seed ) {\n\t\t\t\t\t\tunmatched.push( elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// `i` is now the count of elements visited above, and adding it to `matchedCount`\n\t\t\t// makes the latter nonnegative.\n\t\t\tmatchedCount += i;\n\n\t\t\t// Apply set filters to unmatched elements\n\t\t\t// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n\t\t\t// equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n\t\t\t// no element matchers and no seed.\n\t\t\t// Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n\t\t\t// case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n\t\t\t// numerically zero.\n\t\t\tif ( bySet && i !== matchedCount ) {\n\t\t\t\tj = 0;\n\t\t\t\twhile ( ( matcher = setMatchers[ j++ ] ) ) {\n\t\t\t\t\tmatcher( unmatched, setMatched, context, xml );\n\t\t\t\t}\n\n\t\t\t\tif ( seed ) {\n\n\t\t\t\t\t// Reintegrate element matches to eliminate the need for sorting\n\t\t\t\t\tif ( matchedCount > 0 ) {\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tif ( !( unmatched[ i ] || setMatched[ i ] ) ) {\n\t\t\t\t\t\t\t\tsetMatched[ i ] = pop.call( results );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Discard index placeholder values to get only actual matches\n\t\t\t\t\tsetMatched = condense( setMatched );\n\t\t\t\t}\n\n\t\t\t\t// Add matches to results\n\t\t\t\tpush.apply( results, setMatched );\n\n\t\t\t\t// Seedless set matches succeeding multiple successful matchers stipulate sorting\n\t\t\t\tif ( outermost && !seed && setMatched.length > 0 &&\n\t\t\t\t\t( matchedCount + setMatchers.length ) > 1 ) {\n\n\t\t\t\t\tjQuery.uniqueSort( results );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Override manipulation of globals by nested matchers\n\t\t\tif ( outermost ) {\n\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\toutermostContext = contextBackup;\n\t\t\t}\n\n\t\t\treturn unmatched;\n\t\t};\n\n\treturn bySet ?\n\t\tmarkFunction( superMatcher ) :\n\t\tsuperMatcher;\n}\n\nfunction compile( selector, match /* Internal Use Only */ ) {\n\tvar i,\n\t\tsetMatchers = [],\n\t\telementMatchers = [],\n\t\tcached = compilerCache[ selector + \" \" ];\n\n\tif ( !cached ) {\n\n\t\t// Generate a function of recursive functions that can be used to check each element\n\t\tif ( !match ) {\n\t\t\tmatch = tokenize( selector );\n\t\t}\n\t\ti = match.length;\n\t\twhile ( i-- ) {\n\t\t\tcached = matcherFromTokens( match[ i ] );\n\t\t\tif ( cached[ expando ] ) {\n\t\t\t\tsetMatchers.push( cached );\n\t\t\t} else {\n\t\t\t\telementMatchers.push( cached );\n\t\t\t}\n\t\t}\n\n\t\t// Cache the compiled function\n\t\tcached = compilerCache( selector,\n\t\t\tmatcherFromGroupMatchers( elementMatchers, setMatchers ) );\n\n\t\t// Save selector and tokenization\n\t\tcached.selector = selector;\n\t}\n\treturn cached;\n}\n\n/**\n * A low-level selection function that works with jQuery's compiled\n *  selector functions\n * @param {String|Function} selector A selector or a pre-compiled\n *  selector function built with jQuery selector compile\n * @param {Element} context\n * @param {Array} [results]\n * @param {Array} [seed] A set of elements to match against\n */\nfunction select( selector, context, results, seed ) {\n\tvar i, tokens, token, type, find,\n\t\tcompiled = typeof selector === \"function\" && selector,\n\t\tmatch = !seed && tokenize( ( selector = compiled.selector || selector ) );\n\n\tresults = results || [];\n\n\t// Try to minimize operations if there is only one selector in the list and no seed\n\t// (the latter of which guarantees us context)\n\tif ( match.length === 1 ) {\n\n\t\t// Reduce context if the leading compound selector is an ID\n\t\ttokens = match[ 0 ] = match[ 0 ].slice( 0 );\n\t\tif ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === \"ID\" &&\n\t\t\t\tcontext.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) {\n\n\t\t\tcontext = ( Expr.find.ID(\n\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\tcontext\n\t\t\t) || [] )[ 0 ];\n\t\t\tif ( !context ) {\n\t\t\t\treturn results;\n\n\t\t\t// Precompiled matchers will still verify ancestry, so step up a level\n\t\t\t} else if ( compiled ) {\n\t\t\t\tcontext = context.parentNode;\n\t\t\t}\n\n\t\t\tselector = selector.slice( tokens.shift().value.length );\n\t\t}\n\n\t\t// Fetch a seed set for right-to-left matching\n\t\ti = matchExpr.needsContext.test( selector ) ? 0 : tokens.length;\n\t\twhile ( i-- ) {\n\t\t\ttoken = tokens[ i ];\n\n\t\t\t// Abort if we hit a combinator\n\t\t\tif ( Expr.relative[ ( type = token.type ) ] ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( ( find = Expr.find[ type ] ) ) {\n\n\t\t\t\t// Search, expanding context for leading sibling combinators\n\t\t\t\tif ( ( seed = find(\n\t\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\t\trsibling.test( tokens[ 0 ].type ) &&\n\t\t\t\t\t\ttestContext( context.parentNode ) || context\n\t\t\t\t) ) ) {\n\n\t\t\t\t\t// If seed is empty or no tokens remain, we can return early\n\t\t\t\t\ttokens.splice( i, 1 );\n\t\t\t\t\tselector = seed.length && toSelector( tokens );\n\t\t\t\t\tif ( !selector ) {\n\t\t\t\t\t\tpush.apply( results, seed );\n\t\t\t\t\t\treturn results;\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Compile and execute a filtering function if one is not provided\n\t// Provide `match` to avoid retokenization if we modified the selector above\n\t( compiled || compile( selector, match ) )(\n\t\tseed,\n\t\tcontext,\n\t\t!documentIsHTML,\n\t\tresults,\n\t\t!context || rsibling.test( selector ) && testContext( context.parentNode ) || context\n\t);\n\treturn results;\n}\n\n// One-time assignments\n\n// Support: Android <=4.0 - 4.1+\n// Sort stability\nsupport.sortStable = expando.split( \"\" ).sort( sortOrder ).join( \"\" ) === expando;\n\n// Initialize against the default document\nsetDocument();\n\n// Support: Android <=4.0 - 4.1+\n// Detached nodes confoundingly follow *each other*\nsupport.sortDetached = assert( function( el ) {\n\n\t// Should return 1, but returns 4 (following)\n\treturn el.compareDocumentPosition( document.createElement( \"fieldset\" ) ) & 1;\n} );\n\njQuery.find = find;\n\n// Deprecated\njQuery.expr[ \":\" ] = jQuery.expr.pseudos;\njQuery.unique = jQuery.uniqueSort;\n\n// These have always been private, but they used to be documented as part of\n// Sizzle so let's maintain them for now for backwards compatibility purposes.\nfind.compile = compile;\nfind.select = select;\nfind.setDocument = setDocument;\nfind.tokenize = tokenize;\n\nfind.escape = jQuery.escapeSelector;\nfind.getText = jQuery.text;\nfind.isXML = jQuery.isXMLDoc;\nfind.selectors = jQuery.expr;\nfind.support = jQuery.support;\nfind.uniqueSort = jQuery.uniqueSort;\n\n\t/* eslint-enable */\n\n} )();\n\n\nvar dir = function( elem, dir, until ) {\n\tvar matched = [],\n\t\ttruncate = until !== undefined;\n\n\twhile ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {\n\t\tif ( elem.nodeType === 1 ) {\n\t\t\tif ( truncate && jQuery( elem ).is( until ) ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tmatched.push( elem );\n\t\t}\n\t}\n\treturn matched;\n};\n\n\nvar siblings = function( n, elem ) {\n\tvar matched = [];\n\n\tfor ( ; n; n = n.nextSibling ) {\n\t\tif ( n.nodeType === 1 && n !== elem ) {\n\t\t\tmatched.push( n );\n\t\t}\n\t}\n\n\treturn matched;\n};\n\n\nvar rneedsContext = jQuery.expr.match.needsContext;\n\nvar rsingleTag = ( /^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i );\n\n\n\n// Implement the identical functionality for filter and not\nfunction winnow( elements, qualifier, not ) {\n\tif ( isFunction( qualifier ) ) {\n\t\treturn jQuery.grep( elements, function( elem, i ) {\n\t\t\treturn !!qualifier.call( elem, i, elem ) !== not;\n\t\t} );\n\t}\n\n\t// Single element\n\tif ( qualifier.nodeType ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( elem === qualifier ) !== not;\n\t\t} );\n\t}\n\n\t// Arraylike of elements (jQuery, arguments, Array)\n\tif ( typeof qualifier !== \"string\" ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( indexOf.call( qualifier, elem ) > -1 ) !== not;\n\t\t} );\n\t}\n\n\t// Filtered directly for both simple and complex selectors\n\treturn jQuery.filter( qualifier, elements, not );\n}\n\njQuery.filter = function( expr, elems, not ) {\n\tvar elem = elems[ 0 ];\n\n\tif ( not ) {\n\t\texpr = \":not(\" + expr + \")\";\n\t}\n\n\tif ( elems.length === 1 && elem.nodeType === 1 ) {\n\t\treturn jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];\n\t}\n\n\treturn jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {\n\t\treturn elem.nodeType === 1;\n\t} ) );\n};\n\njQuery.fn.extend( {\n\tfind: function( selector ) {\n\t\tvar i, ret,\n\t\t\tlen = this.length,\n\t\t\tself = this;\n\n\t\tif ( typeof selector !== \"string\" ) {\n\t\t\treturn this.pushStack( jQuery( selector ).filter( function() {\n\t\t\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\t\t\tif ( jQuery.contains( self[ i ], this ) ) {\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} ) );\n\t\t}\n\n\t\tret = this.pushStack( [] );\n\n\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\tjQuery.find( selector, self[ i ], ret );\n\t\t}\n\n\t\treturn len > 1 ? jQuery.uniqueSort( ret ) : ret;\n\t},\n\tfilter: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], false ) );\n\t},\n\tnot: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], true ) );\n\t},\n\tis: function( selector ) {\n\t\treturn !!winnow(\n\t\t\tthis,\n\n\t\t\t// If this is a positional/relative selector, check membership in the returned set\n\t\t\t// so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n\t\t\ttypeof selector === \"string\" && rneedsContext.test( selector ) ?\n\t\t\t\tjQuery( selector ) :\n\t\t\t\tselector || [],\n\t\t\tfalse\n\t\t).length;\n\t}\n} );\n\n\n// Initialize a jQuery object\n\n\n// A central reference to the root jQuery(document)\nvar rootjQuery,\n\n\t// A simple way to check for HTML strings\n\t// Prioritize #id over <tag> to avoid XSS via location.hash (trac-9521)\n\t// Strict HTML recognition (trac-11290: must start with <)\n\t// Shortcut simple #id case for speed\n\trquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/,\n\n\tinit = jQuery.fn.init = function( selector, context, root ) {\n\t\tvar match, elem;\n\n\t\t// HANDLE: $(\"\"), $(null), $(undefined), $(false)\n\t\tif ( !selector ) {\n\t\t\treturn this;\n\t\t}\n\n\t\t// Method init() accepts an alternate rootjQuery\n\t\t// so migrate can support jQuery.sub (gh-2101)\n\t\troot = root || rootjQuery;\n\n\t\t// Handle HTML strings\n\t\tif ( typeof selector === \"string\" ) {\n\t\t\tif ( selector[ 0 ] === \"<\" &&\n\t\t\t\tselector[ selector.length - 1 ] === \">\" &&\n\t\t\t\tselector.length >= 3 ) {\n\n\t\t\t\t// Assume that strings that start and end with <> are HTML and skip the regex check\n\t\t\t\tmatch = [ null, selector, null ];\n\n\t\t\t} else {\n\t\t\t\tmatch = rquickExpr.exec( selector );\n\t\t\t}\n\n\t\t\t// Match html or make sure no context is specified for #id\n\t\t\tif ( match && ( match[ 1 ] || !context ) ) {\n\n\t\t\t\t// HANDLE: $(html) -> $(array)\n\t\t\t\tif ( match[ 1 ] ) {\n\t\t\t\t\tcontext = context instanceof jQuery ? context[ 0 ] : context;\n\n\t\t\t\t\t// Option to run scripts is true for back-compat\n\t\t\t\t\t// Intentionally let the error be thrown if parseHTML is not present\n\t\t\t\t\tjQuery.merge( this, jQuery.parseHTML(\n\t\t\t\t\t\tmatch[ 1 ],\n\t\t\t\t\t\tcontext && context.nodeType ? context.ownerDocument || context : document,\n\t\t\t\t\t\ttrue\n\t\t\t\t\t) );\n\n\t\t\t\t\t// HANDLE: $(html, props)\n\t\t\t\t\tif ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {\n\t\t\t\t\t\tfor ( match in context ) {\n\n\t\t\t\t\t\t\t// Properties of context are called as methods if possible\n\t\t\t\t\t\t\tif ( isFunction( this[ match ] ) ) {\n\t\t\t\t\t\t\t\tthis[ match ]( context[ match ] );\n\n\t\t\t\t\t\t\t// ...and otherwise set as attributes\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tthis.attr( match, context[ match ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\treturn this;\n\n\t\t\t\t// HANDLE: $(#id)\n\t\t\t\t} else {\n\t\t\t\t\telem = document.getElementById( match[ 2 ] );\n\n\t\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t\t// Inject the element directly into the jQuery object\n\t\t\t\t\t\tthis[ 0 ] = elem;\n\t\t\t\t\t\tthis.length = 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\n\t\t\t// HANDLE: $(expr, $(...))\n\t\t\t} else if ( !context || context.jquery ) {\n\t\t\t\treturn ( context || root ).find( selector );\n\n\t\t\t// HANDLE: $(expr, context)\n\t\t\t// (which is just equivalent to: $(context).find(expr)\n\t\t\t} else {\n\t\t\t\treturn this.constructor( context ).find( selector );\n\t\t\t}\n\n\t\t// HANDLE: $(DOMElement)\n\t\t} else if ( selector.nodeType ) {\n\t\t\tthis[ 0 ] = selector;\n\t\t\tthis.length = 1;\n\t\t\treturn this;\n\n\t\t// HANDLE: $(function)\n\t\t// Shortcut for document ready\n\t\t} else if ( isFunction( selector ) ) {\n\t\t\treturn root.ready !== undefined ?\n\t\t\t\troot.ready( selector ) :\n\n\t\t\t\t// Execute immediately if ready is not present\n\t\t\t\tselector( jQuery );\n\t\t}\n\n\t\treturn jQuery.makeArray( selector, this );\n\t};\n\n// Give the init function the jQuery prototype for later instantiation\ninit.prototype = jQuery.fn;\n\n// Initialize central reference\nrootjQuery = jQuery( document );\n\n\nvar rparentsprev = /^(?:parents|prev(?:Until|All))/,\n\n\t// Methods guaranteed to produce a unique set when starting from a unique set\n\tguaranteedUnique = {\n\t\tchildren: true,\n\t\tcontents: true,\n\t\tnext: true,\n\t\tprev: true\n\t};\n\njQuery.fn.extend( {\n\thas: function( target ) {\n\t\tvar targets = jQuery( target, this ),\n\t\t\tl = targets.length;\n\n\t\treturn this.filter( function() {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tif ( jQuery.contains( this, targets[ i ] ) ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\tclosest: function( selectors, context ) {\n\t\tvar cur,\n\t\t\ti = 0,\n\t\t\tl = this.length,\n\t\t\tmatched = [],\n\t\t\ttargets = typeof selectors !== \"string\" && jQuery( selectors );\n\n\t\t// Positional selectors never match, since there's no _selection_ context\n\t\tif ( !rneedsContext.test( selectors ) ) {\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tfor ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {\n\n\t\t\t\t\t// Always skip document fragments\n\t\t\t\t\tif ( cur.nodeType < 11 && ( targets ?\n\t\t\t\t\t\ttargets.index( cur ) > -1 :\n\n\t\t\t\t\t\t// Don't pass non-elements to jQuery#find\n\t\t\t\t\t\tcur.nodeType === 1 &&\n\t\t\t\t\t\t\tjQuery.find.matchesSelector( cur, selectors ) ) ) {\n\n\t\t\t\t\t\tmatched.push( cur );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );\n\t},\n\n\t// Determine the position of an element within the set\n\tindex: function( elem ) {\n\n\t\t// No argument, return index in parent\n\t\tif ( !elem ) {\n\t\t\treturn ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;\n\t\t}\n\n\t\t// Index in selector\n\t\tif ( typeof elem === \"string\" ) {\n\t\t\treturn indexOf.call( jQuery( elem ), this[ 0 ] );\n\t\t}\n\n\t\t// Locate the position of the desired element\n\t\treturn indexOf.call( this,\n\n\t\t\t// If it receives a jQuery object, the first element is used\n\t\t\telem.jquery ? elem[ 0 ] : elem\n\t\t);\n\t},\n\n\tadd: function( selector, context ) {\n\t\treturn this.pushStack(\n\t\t\tjQuery.uniqueSort(\n\t\t\t\tjQuery.merge( this.get(), jQuery( selector, context ) )\n\t\t\t)\n\t\t);\n\t},\n\n\taddBack: function( selector ) {\n\t\treturn this.add( selector == null ?\n\t\t\tthis.prevObject : this.prevObject.filter( selector )\n\t\t);\n\t}\n} );\n\nfunction sibling( cur, dir ) {\n\twhile ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}\n\treturn cur;\n}\n\njQuery.each( {\n\tparent: function( elem ) {\n\t\tvar parent = elem.parentNode;\n\t\treturn parent && parent.nodeType !== 11 ? parent : null;\n\t},\n\tparents: function( elem ) {\n\t\treturn dir( elem, \"parentNode\" );\n\t},\n\tparentsUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"parentNode\", until );\n\t},\n\tnext: function( elem ) {\n\t\treturn sibling( elem, \"nextSibling\" );\n\t},\n\tprev: function( elem ) {\n\t\treturn sibling( elem, \"previousSibling\" );\n\t},\n\tnextAll: function( elem ) {\n\t\treturn dir( elem, \"nextSibling\" );\n\t},\n\tprevAll: function( elem ) {\n\t\treturn dir( elem, \"previousSibling\" );\n\t},\n\tnextUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"nextSibling\", until );\n\t},\n\tprevUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"previousSibling\", until );\n\t},\n\tsiblings: function( elem ) {\n\t\treturn siblings( ( elem.parentNode || {} ).firstChild, elem );\n\t},\n\tchildren: function( elem ) {\n\t\treturn siblings( elem.firstChild );\n\t},\n\tcontents: function( elem ) {\n\t\tif ( elem.contentDocument != null &&\n\n\t\t\t// Support: IE 11+\n\t\t\t// <object> elements with no `data` attribute has an object\n\t\t\t// `contentDocument` with a `null` prototype.\n\t\t\tgetProto( elem.contentDocument ) ) {\n\n\t\t\treturn elem.contentDocument;\n\t\t}\n\n\t\t// Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n\t\t// Treat the template element as a regular one in browsers that\n\t\t// don't support it.\n\t\tif ( nodeName( elem, \"template\" ) ) {\n\t\t\telem = elem.content || elem;\n\t\t}\n\n\t\treturn jQuery.merge( [], elem.childNodes );\n\t}\n}, function( name, fn ) {\n\tjQuery.fn[ name ] = function( until, selector ) {\n\t\tvar matched = jQuery.map( this, fn, until );\n\n\t\tif ( name.slice( -5 ) !== \"Until\" ) {\n\t\t\tselector = until;\n\t\t}\n\n\t\tif ( selector && typeof selector === \"string\" ) {\n\t\t\tmatched = jQuery.filter( selector, matched );\n\t\t}\n\n\t\tif ( this.length > 1 ) {\n\n\t\t\t// Remove duplicates\n\t\t\tif ( !guaranteedUnique[ name ] ) {\n\t\t\t\tjQuery.uniqueSort( matched );\n\t\t\t}\n\n\t\t\t// Reverse order for parents* and prev-derivatives\n\t\t\tif ( rparentsprev.test( name ) ) {\n\t\t\t\tmatched.reverse();\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched );\n\t};\n} );\nvar rnothtmlwhite = ( /[^\\x20\\t\\r\\n\\f]+/g );\n\n\n\n// Convert String-formatted options into Object-formatted ones\nfunction createOptions( options ) {\n\tvar object = {};\n\tjQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {\n\t\tobject[ flag ] = true;\n\t} );\n\treturn object;\n}\n\n/*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */\njQuery.Callbacks = function( options ) {\n\n\t// Convert options from String-formatted to Object-formatted if needed\n\t// (we check in cache first)\n\toptions = typeof options === \"string\" ?\n\t\tcreateOptions( options ) :\n\t\tjQuery.extend( {}, options );\n\n\tvar // Flag to know if list is currently firing\n\t\tfiring,\n\n\t\t// Last fire value for non-forgettable lists\n\t\tmemory,\n\n\t\t// Flag to know if list was already fired\n\t\tfired,\n\n\t\t// Flag to prevent firing\n\t\tlocked,\n\n\t\t// Actual callback list\n\t\tlist = [],\n\n\t\t// Queue of execution data for repeatable lists\n\t\tqueue = [],\n\n\t\t// Index of currently firing callback (modified by add/remove as needed)\n\t\tfiringIndex = -1,\n\n\t\t// Fire callbacks\n\t\tfire = function() {\n\n\t\t\t// Enforce single-firing\n\t\t\tlocked = locked || options.once;\n\n\t\t\t// Execute callbacks for all pending executions,\n\t\t\t// respecting firingIndex overrides and runtime changes\n\t\t\tfired = firing = true;\n\t\t\tfor ( ; queue.length; firingIndex = -1 ) {\n\t\t\t\tmemory = queue.shift();\n\t\t\t\twhile ( ++firingIndex < list.length ) {\n\n\t\t\t\t\t// Run callback and check for early termination\n\t\t\t\t\tif ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&\n\t\t\t\t\t\toptions.stopOnFalse ) {\n\n\t\t\t\t\t\t// Jump to end and forget the data so .add doesn't re-fire\n\t\t\t\t\t\tfiringIndex = list.length;\n\t\t\t\t\t\tmemory = false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Forget the data if we're done with it\n\t\t\tif ( !options.memory ) {\n\t\t\t\tmemory = false;\n\t\t\t}\n\n\t\t\tfiring = false;\n\n\t\t\t// Clean up if we're done firing for good\n\t\t\tif ( locked ) {\n\n\t\t\t\t// Keep an empty list if we have data for future add calls\n\t\t\t\tif ( memory ) {\n\t\t\t\t\tlist = [];\n\n\t\t\t\t// Otherwise, this object is spent\n\t\t\t\t} else {\n\t\t\t\t\tlist = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\t\t// Actual Callbacks object\n\t\tself = {\n\n\t\t\t// Add a callback or a collection of callbacks to the list\n\t\t\tadd: function() {\n\t\t\t\tif ( list ) {\n\n\t\t\t\t\t// If we have memory from a past run, we should fire after adding\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfiringIndex = list.length - 1;\n\t\t\t\t\t\tqueue.push( memory );\n\t\t\t\t\t}\n\n\t\t\t\t\t( function add( args ) {\n\t\t\t\t\t\tjQuery.each( args, function( _, arg ) {\n\t\t\t\t\t\t\tif ( isFunction( arg ) ) {\n\t\t\t\t\t\t\t\tif ( !options.unique || !self.has( arg ) ) {\n\t\t\t\t\t\t\t\t\tlist.push( arg );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else if ( arg && arg.length && toType( arg ) !== \"string\" ) {\n\n\t\t\t\t\t\t\t\t// Inspect recursively\n\t\t\t\t\t\t\t\tadd( arg );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} );\n\t\t\t\t\t} )( arguments );\n\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Remove a callback from the list\n\t\t\tremove: function() {\n\t\t\t\tjQuery.each( arguments, function( _, arg ) {\n\t\t\t\t\tvar index;\n\t\t\t\t\twhile ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {\n\t\t\t\t\t\tlist.splice( index, 1 );\n\n\t\t\t\t\t\t// Handle firing indexes\n\t\t\t\t\t\tif ( index <= firingIndex ) {\n\t\t\t\t\t\t\tfiringIndex--;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Check if a given callback is in the list.\n\t\t\t// If no argument is given, return whether or not list has callbacks attached.\n\t\t\thas: function( fn ) {\n\t\t\t\treturn fn ?\n\t\t\t\t\tjQuery.inArray( fn, list ) > -1 :\n\t\t\t\t\tlist.length > 0;\n\t\t\t},\n\n\t\t\t// Remove all callbacks from the list\n\t\t\tempty: function() {\n\t\t\t\tif ( list ) {\n\t\t\t\t\tlist = [];\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Disable .fire and .add\n\t\t\t// Abort any current/pending executions\n\t\t\t// Clear all callbacks and values\n\t\t\tdisable: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tlist = memory = \"\";\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tdisabled: function() {\n\t\t\t\treturn !list;\n\t\t\t},\n\n\t\t\t// Disable .fire\n\t\t\t// Also disable .add unless we have memory (since it would have no effect)\n\t\t\t// Abort any pending executions\n\t\t\tlock: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tif ( !memory && !firing ) {\n\t\t\t\t\tlist = memory = \"\";\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tlocked: function() {\n\t\t\t\treturn !!locked;\n\t\t\t},\n\n\t\t\t// Call all callbacks with the given context and arguments\n\t\t\tfireWith: function( context, args ) {\n\t\t\t\tif ( !locked ) {\n\t\t\t\t\targs = args || [];\n\t\t\t\t\targs = [ context, args.slice ? args.slice() : args ];\n\t\t\t\t\tqueue.push( args );\n\t\t\t\t\tif ( !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Call all the callbacks with the given arguments\n\t\t\tfire: function() {\n\t\t\t\tself.fireWith( this, arguments );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// To know if the callbacks have already been called at least once\n\t\t\tfired: function() {\n\t\t\t\treturn !!fired;\n\t\t\t}\n\t\t};\n\n\treturn self;\n};\n\n\nfunction Identity( v ) {\n\treturn v;\n}\nfunction Thrower( ex ) {\n\tthrow ex;\n}\n\nfunction adoptValue( value, resolve, reject, noValue ) {\n\tvar method;\n\n\ttry {\n\n\t\t// Check for promise aspect first to privilege synchronous behavior\n\t\tif ( value && isFunction( ( method = value.promise ) ) ) {\n\t\t\tmethod.call( value ).done( resolve ).fail( reject );\n\n\t\t// Other thenables\n\t\t} else if ( value && isFunction( ( method = value.then ) ) ) {\n\t\t\tmethod.call( value, resolve, reject );\n\n\t\t// Other non-thenables\n\t\t} else {\n\n\t\t\t// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n\t\t\t// * false: [ value ].slice( 0 ) => resolve( value )\n\t\t\t// * true: [ value ].slice( 1 ) => resolve()\n\t\t\tresolve.apply( undefined, [ value ].slice( noValue ) );\n\t\t}\n\n\t// For Promises/A+, convert exceptions into rejections\n\t// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n\t// Deferred#then to conditionally suppress rejection.\n\t} catch ( value ) {\n\n\t\t// Support: Android 4.0 only\n\t\t// Strict mode functions invoked without .call/.apply get global-object context\n\t\treject.apply( undefined, [ value ] );\n\t}\n}\n\njQuery.extend( {\n\n\tDeferred: function( func ) {\n\t\tvar tuples = [\n\n\t\t\t\t// action, add listener, callbacks,\n\t\t\t\t// ... .then handlers, argument index, [final state]\n\t\t\t\t[ \"notify\", \"progress\", jQuery.Callbacks( \"memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"memory\" ), 2 ],\n\t\t\t\t[ \"resolve\", \"done\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 0, \"resolved\" ],\n\t\t\t\t[ \"reject\", \"fail\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 1, \"rejected\" ]\n\t\t\t],\n\t\t\tstate = \"pending\",\n\t\t\tpromise = {\n\t\t\t\tstate: function() {\n\t\t\t\t\treturn state;\n\t\t\t\t},\n\t\t\t\talways: function() {\n\t\t\t\t\tdeferred.done( arguments ).fail( arguments );\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\t\t\t\t\"catch\": function( fn ) {\n\t\t\t\t\treturn promise.then( null, fn );\n\t\t\t\t},\n\n\t\t\t\t// Keep pipe for back-compat\n\t\t\t\tpipe: function( /* fnDone, fnFail, fnProgress */ ) {\n\t\t\t\t\tvar fns = arguments;\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\t\t\t\t\t\tjQuery.each( tuples, function( _i, tuple ) {\n\n\t\t\t\t\t\t\t// Map tuples (progress, done, fail) to arguments (done, fail, progress)\n\t\t\t\t\t\t\tvar fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];\n\n\t\t\t\t\t\t\t// deferred.progress(function() { bind to newDefer or newDefer.notify })\n\t\t\t\t\t\t\t// deferred.done(function() { bind to newDefer or newDefer.resolve })\n\t\t\t\t\t\t\t// deferred.fail(function() { bind to newDefer or newDefer.reject })\n\t\t\t\t\t\t\tdeferred[ tuple[ 1 ] ]( function() {\n\t\t\t\t\t\t\t\tvar returned = fn && fn.apply( this, arguments );\n\t\t\t\t\t\t\t\tif ( returned && isFunction( returned.promise ) ) {\n\t\t\t\t\t\t\t\t\treturned.promise()\n\t\t\t\t\t\t\t\t\t\t.progress( newDefer.notify )\n\t\t\t\t\t\t\t\t\t\t.done( newDefer.resolve )\n\t\t\t\t\t\t\t\t\t\t.fail( newDefer.reject );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tnewDefer[ tuple[ 0 ] + \"With\" ](\n\t\t\t\t\t\t\t\t\t\tthis,\n\t\t\t\t\t\t\t\t\t\tfn ? [ returned ] : arguments\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t} );\n\t\t\t\t\t\tfns = null;\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\t\t\t\tthen: function( onFulfilled, onRejected, onProgress ) {\n\t\t\t\t\tvar maxDepth = 0;\n\t\t\t\t\tfunction resolve( depth, deferred, handler, special ) {\n\t\t\t\t\t\treturn function() {\n\t\t\t\t\t\t\tvar that = this,\n\t\t\t\t\t\t\t\targs = arguments,\n\t\t\t\t\t\t\t\tmightThrow = function() {\n\t\t\t\t\t\t\t\t\tvar returned, then;\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.3\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-59\n\t\t\t\t\t\t\t\t\t// Ignore double-resolution attempts\n\t\t\t\t\t\t\t\t\tif ( depth < maxDepth ) {\n\t\t\t\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\treturned = handler.apply( that, args );\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.1\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-48\n\t\t\t\t\t\t\t\t\tif ( returned === deferred.promise() ) {\n\t\t\t\t\t\t\t\t\t\tthrow new TypeError( \"Thenable self-resolution\" );\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ sections 2.3.3.1, 3.5\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-54\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-75\n\t\t\t\t\t\t\t\t\t// Retrieve `then` only once\n\t\t\t\t\t\t\t\t\tthen = returned &&\n\n\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.4\n\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-64\n\t\t\t\t\t\t\t\t\t\t// Only check objects and functions for thenability\n\t\t\t\t\t\t\t\t\t\t( typeof returned === \"object\" ||\n\t\t\t\t\t\t\t\t\t\t\ttypeof returned === \"function\" ) &&\n\t\t\t\t\t\t\t\t\t\treturned.then;\n\n\t\t\t\t\t\t\t\t\t// Handle a returned thenable\n\t\t\t\t\t\t\t\t\tif ( isFunction( then ) ) {\n\n\t\t\t\t\t\t\t\t\t\t// Special processors (notify) just wait for resolution\n\t\t\t\t\t\t\t\t\t\tif ( special ) {\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special )\n\t\t\t\t\t\t\t\t\t\t\t);\n\n\t\t\t\t\t\t\t\t\t\t// Normal processors (resolve) also hook into progress\n\t\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t\t// ...and disregard older resolution values\n\t\t\t\t\t\t\t\t\t\t\tmaxDepth++;\n\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity,\n\t\t\t\t\t\t\t\t\t\t\t\t\tdeferred.notifyWith )\n\t\t\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Handle all other returned values\n\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\tif ( handler !== Identity ) {\n\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\targs = [ returned ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t// Process the value(s)\n\t\t\t\t\t\t\t\t\t\t// Default process is resolve\n\t\t\t\t\t\t\t\t\t\t( special || deferred.resolveWith )( that, args );\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t},\n\n\t\t\t\t\t\t\t\t// Only normal processors (resolve) catch and reject exceptions\n\t\t\t\t\t\t\t\tprocess = special ?\n\t\t\t\t\t\t\t\t\tmightThrow :\n\t\t\t\t\t\t\t\t\tfunction() {\n\t\t\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\t\t\tmightThrow();\n\t\t\t\t\t\t\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t\t\t\t\t\t\tif ( jQuery.Deferred.exceptionHook ) {\n\t\t\t\t\t\t\t\t\t\t\t\tjQuery.Deferred.exceptionHook( e,\n\t\t\t\t\t\t\t\t\t\t\t\t\tprocess.error );\n\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.4.1\n\t\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-61\n\t\t\t\t\t\t\t\t\t\t\t// Ignore post-resolution exceptions\n\t\t\t\t\t\t\t\t\t\t\tif ( depth + 1 >= maxDepth ) {\n\n\t\t\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\t\t\tif ( handler !== Thrower ) {\n\t\t\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\t\t\targs = [ e ];\n\t\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t\tdeferred.rejectWith( that, args );\n\t\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t};\n\n\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.1\n\t\t\t\t\t\t\t// https://promisesaplus.com/#point-57\n\t\t\t\t\t\t\t// Re-resolve promises immediately to dodge false rejection from\n\t\t\t\t\t\t\t// subsequent errors\n\t\t\t\t\t\t\tif ( depth ) {\n\t\t\t\t\t\t\t\tprocess();\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// Call an optional hook to record the error, in case of exception\n\t\t\t\t\t\t\t\t// since it's otherwise lost when execution goes async\n\t\t\t\t\t\t\t\tif ( jQuery.Deferred.getErrorHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getErrorHook();\n\n\t\t\t\t\t\t\t\t// The deprecated alias of the above. While the name suggests\n\t\t\t\t\t\t\t\t// returning the stack, not an error instance, jQuery just passes\n\t\t\t\t\t\t\t\t// it directly to `console.warn` so both will work; an instance\n\t\t\t\t\t\t\t\t// just better cooperates with source maps.\n\t\t\t\t\t\t\t\t} else if ( jQuery.Deferred.getStackHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getStackHook();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\twindow.setTimeout( process );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t};\n\t\t\t\t\t}\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\n\t\t\t\t\t\t// progress_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 0 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onProgress ) ?\n\t\t\t\t\t\t\t\t\tonProgress :\n\t\t\t\t\t\t\t\t\tIdentity,\n\t\t\t\t\t\t\t\tnewDefer.notifyWith\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// fulfilled_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 1 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onFulfilled ) ?\n\t\t\t\t\t\t\t\t\tonFulfilled :\n\t\t\t\t\t\t\t\t\tIdentity\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// rejected_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 2 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onRejected ) ?\n\t\t\t\t\t\t\t\t\tonRejected :\n\t\t\t\t\t\t\t\t\tThrower\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\n\t\t\t\t// Get a promise for this deferred\n\t\t\t\t// If obj is provided, the promise aspect is added to the object\n\t\t\t\tpromise: function( obj ) {\n\t\t\t\t\treturn obj != null ? jQuery.extend( obj, promise ) : promise;\n\t\t\t\t}\n\t\t\t},\n\t\t\tdeferred = {};\n\n\t\t// Add list-specific methods\n\t\tjQuery.each( tuples, function( i, tuple ) {\n\t\t\tvar list = tuple[ 2 ],\n\t\t\t\tstateString = tuple[ 5 ];\n\n\t\t\t// promise.progress = list.add\n\t\t\t// promise.done = list.add\n\t\t\t// promise.fail = list.add\n\t\t\tpromise[ tuple[ 1 ] ] = list.add;\n\n\t\t\t// Handle state\n\t\t\tif ( stateString ) {\n\t\t\t\tlist.add(\n\t\t\t\t\tfunction() {\n\n\t\t\t\t\t\t// state = \"resolved\" (i.e., fulfilled)\n\t\t\t\t\t\t// state = \"rejected\"\n\t\t\t\t\t\tstate = stateString;\n\t\t\t\t\t},\n\n\t\t\t\t\t// rejected_callbacks.disable\n\t\t\t\t\t// fulfilled_callbacks.disable\n\t\t\t\t\ttuples[ 3 - i ][ 2 ].disable,\n\n\t\t\t\t\t// rejected_handlers.disable\n\t\t\t\t\t// fulfilled_handlers.disable\n\t\t\t\t\ttuples[ 3 - i ][ 3 ].disable,\n\n\t\t\t\t\t// progress_callbacks.lock\n\t\t\t\t\ttuples[ 0 ][ 2 ].lock,\n\n\t\t\t\t\t// progress_handlers.lock\n\t\t\t\t\ttuples[ 0 ][ 3 ].lock\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// progress_handlers.fire\n\t\t\t// fulfilled_handlers.fire\n\t\t\t// rejected_handlers.fire\n\t\t\tlist.add( tuple[ 3 ].fire );\n\n\t\t\t// deferred.notify = function() { deferred.notifyWith(...) }\n\t\t\t// deferred.resolve = function() { deferred.resolveWith(...) }\n\t\t\t// deferred.reject = function() { deferred.rejectWith(...) }\n\t\t\tdeferred[ tuple[ 0 ] ] = function() {\n\t\t\t\tdeferred[ tuple[ 0 ] + \"With\" ]( this === deferred ? undefined : this, arguments );\n\t\t\t\treturn this;\n\t\t\t};\n\n\t\t\t// deferred.notifyWith = list.fireWith\n\t\t\t// deferred.resolveWith = list.fireWith\n\t\t\t// deferred.rejectWith = list.fireWith\n\t\t\tdeferred[ tuple[ 0 ] + \"With\" ] = list.fireWith;\n\t\t} );\n\n\t\t// Make the deferred a promise\n\t\tpromise.promise( deferred );\n\n\t\t// Call given func if any\n\t\tif ( func ) {\n\t\t\tfunc.call( deferred, deferred );\n\t\t}\n\n\t\t// All done!\n\t\treturn deferred;\n\t},\n\n\t// Deferred helper\n\twhen: function( singleValue ) {\n\t\tvar\n\n\t\t\t// count of uncompleted subordinates\n\t\t\tremaining = arguments.length,\n\n\t\t\t// count of unprocessed arguments\n\t\t\ti = remaining,\n\n\t\t\t// subordinate fulfillment data\n\t\t\tresolveContexts = Array( i ),\n\t\t\tresolveValues = slice.call( arguments ),\n\n\t\t\t// the primary Deferred\n\t\t\tprimary = jQuery.Deferred(),\n\n\t\t\t// subordinate callback factory\n\t\t\tupdateFunc = function( i ) {\n\t\t\t\treturn function( value ) {\n\t\t\t\t\tresolveContexts[ i ] = this;\n\t\t\t\t\tresolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;\n\t\t\t\t\tif ( !( --remaining ) ) {\n\t\t\t\t\t\tprimary.resolveWith( resolveContexts, resolveValues );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\n\t\t// Single- and empty arguments are adopted like Promise.resolve\n\t\tif ( remaining <= 1 ) {\n\t\t\tadoptValue( singleValue, primary.done( updateFunc( i ) ).resolve, primary.reject,\n\t\t\t\t!remaining );\n\n\t\t\t// Use .then() to unwrap secondary thenables (cf. gh-3000)\n\t\t\tif ( primary.state() === \"pending\" ||\n\t\t\t\tisFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {\n\n\t\t\t\treturn primary.then();\n\t\t\t}\n\t\t}\n\n\t\t// Multiple arguments are aggregated like Promise.all array elements\n\t\twhile ( i-- ) {\n\t\t\tadoptValue( resolveValues[ i ], updateFunc( i ), primary.reject );\n\t\t}\n\n\t\treturn primary.promise();\n\t}\n} );\n\n\n// These usually indicate a programmer mistake during development,\n// warn about them ASAP rather than swallowing them by default.\nvar rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n\n// If `jQuery.Deferred.getErrorHook` is defined, `asyncError` is an error\n// captured before the async barrier to get the original error cause\n// which may otherwise be hidden.\njQuery.Deferred.exceptionHook = function( error, asyncError ) {\n\n\t// Support: IE 8 - 9 only\n\t// Console exists when dev tools are open, which can happen at any time\n\tif ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {\n\t\twindow.console.warn( \"jQuery.Deferred exception: \" + error.message,\n\t\t\terror.stack, asyncError );\n\t}\n};\n\n\n\n\njQuery.readyException = function( error ) {\n\twindow.setTimeout( function() {\n\t\tthrow error;\n\t} );\n};\n\n\n\n\n// The deferred used on DOM ready\nvar readyList = jQuery.Deferred();\n\njQuery.fn.ready = function( fn ) {\n\n\treadyList\n\t\t.then( fn )\n\n\t\t// Wrap jQuery.readyException in a function so that the lookup\n\t\t// happens at the time of error handling instead of callback\n\t\t// registration.\n\t\t.catch( function( error ) {\n\t\t\tjQuery.readyException( error );\n\t\t} );\n\n\treturn this;\n};\n\njQuery.extend( {\n\n\t// Is the DOM ready to be used? Set to true once it occurs.\n\tisReady: false,\n\n\t// A counter to track how many items to wait for before\n\t// the ready event fires. See trac-6781\n\treadyWait: 1,\n\n\t// Handle when the DOM is ready\n\tready: function( wait ) {\n\n\t\t// Abort if there are pending holds or we're already ready\n\t\tif ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Remember that the DOM is ready\n\t\tjQuery.isReady = true;\n\n\t\t// If a normal DOM Ready event fired, decrement, and wait if need be\n\t\tif ( wait !== true && --jQuery.readyWait > 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If there are functions bound, to execute\n\t\treadyList.resolveWith( document, [ jQuery ] );\n\t}\n} );\n\njQuery.ready.then = readyList.then;\n\n// The ready event handler and self cleanup method\nfunction completed() {\n\tdocument.removeEventListener( \"DOMContentLoaded\", completed );\n\twindow.removeEventListener( \"load\", completed );\n\tjQuery.ready();\n}\n\n// Catch cases where $(document).ready() is called\n// after the browser event has already occurred.\n// Support: IE <=9 - 10 only\n// Older IE sometimes signals \"interactive\" too soon\nif ( document.readyState === \"complete\" ||\n\t( document.readyState !== \"loading\" && !document.documentElement.doScroll ) ) {\n\n\t// Handle it asynchronously to allow scripts the opportunity to delay ready\n\twindow.setTimeout( jQuery.ready );\n\n} else {\n\n\t// Use the handy event callback\n\tdocument.addEventListener( \"DOMContentLoaded\", completed );\n\n\t// A fallback to window.onload, that will always work\n\twindow.addEventListener( \"load\", completed );\n}\n\n\n\n\n// Multifunctional method to get and set values of a collection\n// The value/s can optionally be executed if it's a function\nvar access = function( elems, fn, key, value, chainable, emptyGet, raw ) {\n\tvar i = 0,\n\t\tlen = elems.length,\n\t\tbulk = key == null;\n\n\t// Sets many values\n\tif ( toType( key ) === \"object\" ) {\n\t\tchainable = true;\n\t\tfor ( i in key ) {\n\t\t\taccess( elems, fn, i, key[ i ], true, emptyGet, raw );\n\t\t}\n\n\t// Sets one value\n\t} else if ( value !== undefined ) {\n\t\tchainable = true;\n\n\t\tif ( !isFunction( value ) ) {\n\t\t\traw = true;\n\t\t}\n\n\t\tif ( bulk ) {\n\n\t\t\t// Bulk operations run against the entire set\n\t\t\tif ( raw ) {\n\t\t\t\tfn.call( elems, value );\n\t\t\t\tfn = null;\n\n\t\t\t// ...except when executing function values\n\t\t\t} else {\n\t\t\t\tbulk = fn;\n\t\t\t\tfn = function( elem, _key, value ) {\n\t\t\t\t\treturn bulk.call( jQuery( elem ), value );\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\n\t\tif ( fn ) {\n\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\tfn(\n\t\t\t\t\telems[ i ], key, raw ?\n\t\t\t\t\t\tvalue :\n\t\t\t\t\t\tvalue.call( elems[ i ], i, fn( elems[ i ], key ) )\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( chainable ) {\n\t\treturn elems;\n\t}\n\n\t// Gets\n\tif ( bulk ) {\n\t\treturn fn.call( elems );\n\t}\n\n\treturn len ? fn( elems[ 0 ], key ) : emptyGet;\n};\n\n\n// Matches dashed string for camelizing\nvar rmsPrefix = /^-ms-/,\n\trdashAlpha = /-([a-z])/g;\n\n// Used by camelCase as callback to replace()\nfunction fcamelCase( _all, letter ) {\n\treturn letter.toUpperCase();\n}\n\n// Convert dashed to camelCase; used by the css and data modules\n// Support: IE <=9 - 11, Edge 12 - 15\n// Microsoft forgot to hump their vendor prefix (trac-9572)\nfunction camelCase( string ) {\n\treturn string.replace( rmsPrefix, \"ms-\" ).replace( rdashAlpha, fcamelCase );\n}\nvar acceptData = function( owner ) {\n\n\t// Accepts only:\n\t//  - Node\n\t//    - Node.ELEMENT_NODE\n\t//    - Node.DOCUMENT_NODE\n\t//  - Object\n\t//    - Any\n\treturn owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );\n};\n\n\n\n\nfunction Data() {\n\tthis.expando = jQuery.expando + Data.uid++;\n}\n\nData.uid = 1;\n\nData.prototype = {\n\n\tcache: function( owner ) {\n\n\t\t// Check if the owner object already has a cache\n\t\tvar value = owner[ this.expando ];\n\n\t\t// If not, create one\n\t\tif ( !value ) {\n\t\t\tvalue = {};\n\n\t\t\t// We can accept data for non-element nodes in modern browsers,\n\t\t\t// but we should not, see trac-8335.\n\t\t\t// Always return an empty object.\n\t\t\tif ( acceptData( owner ) ) {\n\n\t\t\t\t// If it is a node unlikely to be stringify-ed or looped over\n\t\t\t\t// use plain assignment\n\t\t\t\tif ( owner.nodeType ) {\n\t\t\t\t\towner[ this.expando ] = value;\n\n\t\t\t\t// Otherwise secure it in a non-enumerable property\n\t\t\t\t// configurable must be true to allow the property to be\n\t\t\t\t// deleted when data is removed\n\t\t\t\t} else {\n\t\t\t\t\tObject.defineProperty( owner, this.expando, {\n\t\t\t\t\t\tvalue: value,\n\t\t\t\t\t\tconfigurable: true\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn value;\n\t},\n\tset: function( owner, data, value ) {\n\t\tvar prop,\n\t\t\tcache = this.cache( owner );\n\n\t\t// Handle: [ owner, key, value ] args\n\t\t// Always use camelCase key (gh-2257)\n\t\tif ( typeof data === \"string\" ) {\n\t\t\tcache[ camelCase( data ) ] = value;\n\n\t\t// Handle: [ owner, { properties } ] args\n\t\t} else {\n\n\t\t\t// Copy the properties one-by-one to the cache object\n\t\t\tfor ( prop in data ) {\n\t\t\t\tcache[ camelCase( prop ) ] = data[ prop ];\n\t\t\t}\n\t\t}\n\t\treturn cache;\n\t},\n\tget: function( owner, key ) {\n\t\treturn key === undefined ?\n\t\t\tthis.cache( owner ) :\n\n\t\t\t// Always use camelCase key (gh-2257)\n\t\t\towner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];\n\t},\n\taccess: function( owner, key, value ) {\n\n\t\t// In cases where either:\n\t\t//\n\t\t//   1. No key was specified\n\t\t//   2. A string key was specified, but no value provided\n\t\t//\n\t\t// Take the \"read\" path and allow the get method to determine\n\t\t// which value to return, respectively either:\n\t\t//\n\t\t//   1. The entire cache object\n\t\t//   2. The data stored at the key\n\t\t//\n\t\tif ( key === undefined ||\n\t\t\t\t( ( key && typeof key === \"string\" ) && value === undefined ) ) {\n\n\t\t\treturn this.get( owner, key );\n\t\t}\n\n\t\t// When the key is not a string, or both a key and value\n\t\t// are specified, set or extend (existing objects) with either:\n\t\t//\n\t\t//   1. An object of properties\n\t\t//   2. A key and value\n\t\t//\n\t\tthis.set( owner, key, value );\n\n\t\t// Since the \"set\" path can have two possible entry points\n\t\t// return the expected data based on which path was taken[*]\n\t\treturn value !== undefined ? value : key;\n\t},\n\tremove: function( owner, key ) {\n\t\tvar i,\n\t\t\tcache = owner[ this.expando ];\n\n\t\tif ( cache === undefined ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( key !== undefined ) {\n\n\t\t\t// Support array or space separated string of keys\n\t\t\tif ( Array.isArray( key ) ) {\n\n\t\t\t\t// If key is an array of keys...\n\t\t\t\t// We always set camelCase keys, so remove that.\n\t\t\t\tkey = key.map( camelCase );\n\t\t\t} else {\n\t\t\t\tkey = camelCase( key );\n\n\t\t\t\t// If a key with the spaces exists, use it.\n\t\t\t\t// Otherwise, create an array by matching non-whitespace\n\t\t\t\tkey = key in cache ?\n\t\t\t\t\t[ key ] :\n\t\t\t\t\t( key.match( rnothtmlwhite ) || [] );\n\t\t\t}\n\n\t\t\ti = key.length;\n\n\t\t\twhile ( i-- ) {\n\t\t\t\tdelete cache[ key[ i ] ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove the expando if there's no more data\n\t\tif ( key === undefined || jQuery.isEmptyObject( cache ) ) {\n\n\t\t\t// Support: Chrome <=35 - 45\n\t\t\t// Webkit & Blink performance suffers when deleting properties\n\t\t\t// from DOM nodes, so set to undefined instead\n\t\t\t// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n\t\t\tif ( owner.nodeType ) {\n\t\t\t\towner[ this.expando ] = undefined;\n\t\t\t} else {\n\t\t\t\tdelete owner[ this.expando ];\n\t\t\t}\n\t\t}\n\t},\n\thasData: function( owner ) {\n\t\tvar cache = owner[ this.expando ];\n\t\treturn cache !== undefined && !jQuery.isEmptyObject( cache );\n\t}\n};\nvar dataPriv = new Data();\n\nvar dataUser = new Data();\n\n\n\n//\tImplementation Summary\n//\n//\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n//\t2. Improve the module's maintainability by reducing the storage\n//\t\tpaths to a single mechanism.\n//\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n//\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n//\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n//\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n\nvar rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/,\n\trmultiDash = /[A-Z]/g;\n\nfunction getData( data ) {\n\tif ( data === \"true\" ) {\n\t\treturn true;\n\t}\n\n\tif ( data === \"false\" ) {\n\t\treturn false;\n\t}\n\n\tif ( data === \"null\" ) {\n\t\treturn null;\n\t}\n\n\t// Only convert to a number if it doesn't change the string\n\tif ( data === +data + \"\" ) {\n\t\treturn +data;\n\t}\n\n\tif ( rbrace.test( data ) ) {\n\t\treturn JSON.parse( data );\n\t}\n\n\treturn data;\n}\n\nfunction dataAttr( elem, key, data ) {\n\tvar name;\n\n\t// If nothing was found internally, try to fetch any\n\t// data from the HTML5 data-* attribute\n\tif ( data === undefined && elem.nodeType === 1 ) {\n\t\tname = \"data-\" + key.replace( rmultiDash, \"-$&\" ).toLowerCase();\n\t\tdata = elem.getAttribute( name );\n\n\t\tif ( typeof data === \"string\" ) {\n\t\t\ttry {\n\t\t\t\tdata = getData( data );\n\t\t\t} catch ( e ) {}\n\n\t\t\t// Make sure we set the data so it isn't changed later\n\t\t\tdataUser.set( elem, key, data );\n\t\t} else {\n\t\t\tdata = undefined;\n\t\t}\n\t}\n\treturn data;\n}\n\njQuery.extend( {\n\thasData: function( elem ) {\n\t\treturn dataUser.hasData( elem ) || dataPriv.hasData( elem );\n\t},\n\n\tdata: function( elem, name, data ) {\n\t\treturn dataUser.access( elem, name, data );\n\t},\n\n\tremoveData: function( elem, name ) {\n\t\tdataUser.remove( elem, name );\n\t},\n\n\t// TODO: Now that all calls to _data and _removeData have been replaced\n\t// with direct calls to dataPriv methods, these can be deprecated.\n\t_data: function( elem, name, data ) {\n\t\treturn dataPriv.access( elem, name, data );\n\t},\n\n\t_removeData: function( elem, name ) {\n\t\tdataPriv.remove( elem, name );\n\t}\n} );\n\njQuery.fn.extend( {\n\tdata: function( key, value ) {\n\t\tvar i, name, data,\n\t\t\telem = this[ 0 ],\n\t\t\tattrs = elem && elem.attributes;\n\n\t\t// Gets all values\n\t\tif ( key === undefined ) {\n\t\t\tif ( this.length ) {\n\t\t\t\tdata = dataUser.get( elem );\n\n\t\t\t\tif ( elem.nodeType === 1 && !dataPriv.get( elem, \"hasDataAttrs\" ) ) {\n\t\t\t\t\ti = attrs.length;\n\t\t\t\t\twhile ( i-- ) {\n\n\t\t\t\t\t\t// Support: IE 11 only\n\t\t\t\t\t\t// The attrs elements can be null (trac-14894)\n\t\t\t\t\t\tif ( attrs[ i ] ) {\n\t\t\t\t\t\t\tname = attrs[ i ].name;\n\t\t\t\t\t\t\tif ( name.indexOf( \"data-\" ) === 0 ) {\n\t\t\t\t\t\t\t\tname = camelCase( name.slice( 5 ) );\n\t\t\t\t\t\t\t\tdataAttr( elem, name, data[ name ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tdataPriv.set( elem, \"hasDataAttrs\", true );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn data;\n\t\t}\n\n\t\t// Sets multiple values\n\t\tif ( typeof key === \"object\" ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tdataUser.set( this, key );\n\t\t\t} );\n\t\t}\n\n\t\treturn access( this, function( value ) {\n\t\t\tvar data;\n\n\t\t\t// The calling jQuery object (element matches) is not empty\n\t\t\t// (and therefore has an element appears at this[ 0 ]) and the\n\t\t\t// `value` parameter was not undefined. An empty jQuery object\n\t\t\t// will result in `undefined` for elem = this[ 0 ] which will\n\t\t\t// throw an exception if an attempt to read a data cache is made.\n\t\t\tif ( elem && value === undefined ) {\n\n\t\t\t\t// Attempt to get data from the cache\n\t\t\t\t// The key will always be camelCased in Data\n\t\t\t\tdata = dataUser.get( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// Attempt to \"discover\" the data in\n\t\t\t\t// HTML5 custom data-* attrs\n\t\t\t\tdata = dataAttr( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// We tried really hard, but the data doesn't exist.\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Set the data...\n\t\t\tthis.each( function() {\n\n\t\t\t\t// We always store the camelCased key\n\t\t\t\tdataUser.set( this, key, value );\n\t\t\t} );\n\t\t}, null, value, arguments.length > 1, null, true );\n\t},\n\n\tremoveData: function( key ) {\n\t\treturn this.each( function() {\n\t\t\tdataUser.remove( this, key );\n\t\t} );\n\t}\n} );\n\n\njQuery.extend( {\n\tqueue: function( elem, type, data ) {\n\t\tvar queue;\n\n\t\tif ( elem ) {\n\t\t\ttype = ( type || \"fx\" ) + \"queue\";\n\t\t\tqueue = dataPriv.get( elem, type );\n\n\t\t\t// Speed up dequeue by getting out quickly if this is just a lookup\n\t\t\tif ( data ) {\n\t\t\t\tif ( !queue || Array.isArray( data ) ) {\n\t\t\t\t\tqueue = dataPriv.access( elem, type, jQuery.makeArray( data ) );\n\t\t\t\t} else {\n\t\t\t\t\tqueue.push( data );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn queue || [];\n\t\t}\n\t},\n\n\tdequeue: function( elem, type ) {\n\t\ttype = type || \"fx\";\n\n\t\tvar queue = jQuery.queue( elem, type ),\n\t\t\tstartLength = queue.length,\n\t\t\tfn = queue.shift(),\n\t\t\thooks = jQuery._queueHooks( elem, type ),\n\t\t\tnext = function() {\n\t\t\t\tjQuery.dequeue( elem, type );\n\t\t\t};\n\n\t\t// If the fx queue is dequeued, always remove the progress sentinel\n\t\tif ( fn === \"inprogress\" ) {\n\t\t\tfn = queue.shift();\n\t\t\tstartLength--;\n\t\t}\n\n\t\tif ( fn ) {\n\n\t\t\t// Add a progress sentinel to prevent the fx queue from being\n\t\t\t// automatically dequeued\n\t\t\tif ( type === \"fx\" ) {\n\t\t\t\tqueue.unshift( \"inprogress\" );\n\t\t\t}\n\n\t\t\t// Clear up the last queue stop function\n\t\t\tdelete hooks.stop;\n\t\t\tfn.call( elem, next, hooks );\n\t\t}\n\n\t\tif ( !startLength && hooks ) {\n\t\t\thooks.empty.fire();\n\t\t}\n\t},\n\n\t// Not public - generate a queueHooks object, or return the current one\n\t_queueHooks: function( elem, type ) {\n\t\tvar key = type + \"queueHooks\";\n\t\treturn dataPriv.get( elem, key ) || dataPriv.access( elem, key, {\n\t\t\tempty: jQuery.Callbacks( \"once memory\" ).add( function() {\n\t\t\t\tdataPriv.remove( elem, [ type + \"queue\", key ] );\n\t\t\t} )\n\t\t} );\n\t}\n} );\n\njQuery.fn.extend( {\n\tqueue: function( type, data ) {\n\t\tvar setter = 2;\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tdata = type;\n\t\t\ttype = \"fx\";\n\t\t\tsetter--;\n\t\t}\n\n\t\tif ( arguments.length < setter ) {\n\t\t\treturn jQuery.queue( this[ 0 ], type );\n\t\t}\n\n\t\treturn data === undefined ?\n\t\t\tthis :\n\t\t\tthis.each( function() {\n\t\t\t\tvar queue = jQuery.queue( this, type, data );\n\n\t\t\t\t// Ensure a hooks for this queue\n\t\t\t\tjQuery._queueHooks( this, type );\n\n\t\t\t\tif ( type === \"fx\" && queue[ 0 ] !== \"inprogress\" ) {\n\t\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t\t}\n\t\t\t} );\n\t},\n\tdequeue: function( type ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.dequeue( this, type );\n\t\t} );\n\t},\n\tclearQueue: function( type ) {\n\t\treturn this.queue( type || \"fx\", [] );\n\t},\n\n\t// Get a promise resolved when queues of a certain type\n\t// are emptied (fx is the type by default)\n\tpromise: function( type, obj ) {\n\t\tvar tmp,\n\t\t\tcount = 1,\n\t\t\tdefer = jQuery.Deferred(),\n\t\t\telements = this,\n\t\t\ti = this.length,\n\t\t\tresolve = function() {\n\t\t\t\tif ( !( --count ) ) {\n\t\t\t\t\tdefer.resolveWith( elements, [ elements ] );\n\t\t\t\t}\n\t\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tobj = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\ttype = type || \"fx\";\n\n\t\twhile ( i-- ) {\n\t\t\ttmp = dataPriv.get( elements[ i ], type + \"queueHooks\" );\n\t\t\tif ( tmp && tmp.empty ) {\n\t\t\t\tcount++;\n\t\t\t\ttmp.empty.add( resolve );\n\t\t\t}\n\t\t}\n\t\tresolve();\n\t\treturn defer.promise( obj );\n\t}\n} );\nvar pnum = ( /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/ ).source;\n\nvar rcssNum = new RegExp( \"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\" );\n\n\nvar cssExpand = [ \"Top\", \"Right\", \"Bottom\", \"Left\" ];\n\nvar documentElement = document.documentElement;\n\n\n\n\tvar isAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem );\n\t\t},\n\t\tcomposed = { composed: true };\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only\n\t// Check attachment across shadow DOM boundaries when possible (gh-3504)\n\t// Support: iOS 10.0-10.2 only\n\t// Early iOS 10 versions support `attachShadow` but not `getRootNode`,\n\t// leading to errors. We need to check for `getRootNode`.\n\tif ( documentElement.getRootNode ) {\n\t\tisAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem ) ||\n\t\t\t\telem.getRootNode( composed ) === elem.ownerDocument;\n\t\t};\n\t}\nvar isHiddenWithinTree = function( elem, el ) {\n\n\t\t// isHiddenWithinTree might be called from jQuery#filter function;\n\t\t// in that case, element will be second argument\n\t\telem = el || elem;\n\n\t\t// Inline style trumps all\n\t\treturn elem.style.display === \"none\" ||\n\t\t\telem.style.display === \"\" &&\n\n\t\t\t// Otherwise, check computed style\n\t\t\t// Support: Firefox <=43 - 45\n\t\t\t// Disconnected elements can have computed display: none, so first confirm that elem is\n\t\t\t// in the document.\n\t\t\tisAttached( elem ) &&\n\n\t\t\tjQuery.css( elem, \"display\" ) === \"none\";\n\t};\n\n\n\nfunction adjustCSS( elem, prop, valueParts, tween ) {\n\tvar adjusted, scale,\n\t\tmaxIterations = 20,\n\t\tcurrentValue = tween ?\n\t\t\tfunction() {\n\t\t\t\treturn tween.cur();\n\t\t\t} :\n\t\t\tfunction() {\n\t\t\t\treturn jQuery.css( elem, prop, \"\" );\n\t\t\t},\n\t\tinitial = currentValue(),\n\t\tunit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" ),\n\n\t\t// Starting value computation is required for potential unit mismatches\n\t\tinitialInUnit = elem.nodeType &&\n\t\t\t( jQuery.cssNumber[ prop ] || unit !== \"px\" && +initial ) &&\n\t\t\trcssNum.exec( jQuery.css( elem, prop ) );\n\n\tif ( initialInUnit && initialInUnit[ 3 ] !== unit ) {\n\n\t\t// Support: Firefox <=54\n\t\t// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n\t\tinitial = initial / 2;\n\n\t\t// Trust units reported by jQuery.css\n\t\tunit = unit || initialInUnit[ 3 ];\n\n\t\t// Iteratively approximate from a nonzero starting point\n\t\tinitialInUnit = +initial || 1;\n\n\t\twhile ( maxIterations-- ) {\n\n\t\t\t// Evaluate and update our best guess (doubling guesses that zero out).\n\t\t\t// Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n\t\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\t\t\tif ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {\n\t\t\t\tmaxIterations = 0;\n\t\t\t}\n\t\t\tinitialInUnit = initialInUnit / scale;\n\n\t\t}\n\n\t\tinitialInUnit = initialInUnit * 2;\n\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\n\t\t// Make sure we update the tween properties later on\n\t\tvalueParts = valueParts || [];\n\t}\n\n\tif ( valueParts ) {\n\t\tinitialInUnit = +initialInUnit || +initial || 0;\n\n\t\t// Apply relative offset (+=/-=) if specified\n\t\tadjusted = valueParts[ 1 ] ?\n\t\t\tinitialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :\n\t\t\t+valueParts[ 2 ];\n\t\tif ( tween ) {\n\t\t\ttween.unit = unit;\n\t\t\ttween.start = initialInUnit;\n\t\t\ttween.end = adjusted;\n\t\t}\n\t}\n\treturn adjusted;\n}\n\n\nvar defaultDisplayMap = {};\n\nfunction getDefaultDisplay( elem ) {\n\tvar temp,\n\t\tdoc = elem.ownerDocument,\n\t\tnodeName = elem.nodeName,\n\t\tdisplay = defaultDisplayMap[ nodeName ];\n\n\tif ( display ) {\n\t\treturn display;\n\t}\n\n\ttemp = doc.body.appendChild( doc.createElement( nodeName ) );\n\tdisplay = jQuery.css( temp, \"display\" );\n\n\ttemp.parentNode.removeChild( temp );\n\n\tif ( display === \"none\" ) {\n\t\tdisplay = \"block\";\n\t}\n\tdefaultDisplayMap[ nodeName ] = display;\n\n\treturn display;\n}\n\nfunction showHide( elements, show ) {\n\tvar display, elem,\n\t\tvalues = [],\n\t\tindex = 0,\n\t\tlength = elements.length;\n\n\t// Determine new display value for elements that need to change\n\tfor ( ; index < length; index++ ) {\n\t\telem = elements[ index ];\n\t\tif ( !elem.style ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tdisplay = elem.style.display;\n\t\tif ( show ) {\n\n\t\t\t// Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n\t\t\t// check is required in this first loop unless we have a nonempty display value (either\n\t\t\t// inline or about-to-be-restored)\n\t\t\tif ( display === \"none\" ) {\n\t\t\t\tvalues[ index ] = dataPriv.get( elem, \"display\" ) || null;\n\t\t\t\tif ( !values[ index ] ) {\n\t\t\t\t\telem.style.display = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t\tif ( elem.style.display === \"\" && isHiddenWithinTree( elem ) ) {\n\t\t\t\tvalues[ index ] = getDefaultDisplay( elem );\n\t\t\t}\n\t\t} else {\n\t\t\tif ( display !== \"none\" ) {\n\t\t\t\tvalues[ index ] = \"none\";\n\n\t\t\t\t// Remember what we're overwriting\n\t\t\t\tdataPriv.set( elem, \"display\", display );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Set the display of the elements in a second loop to avoid constant reflow\n\tfor ( index = 0; index < length; index++ ) {\n\t\tif ( values[ index ] != null ) {\n\t\t\telements[ index ].style.display = values[ index ];\n\t\t}\n\t}\n\n\treturn elements;\n}\n\njQuery.fn.extend( {\n\tshow: function() {\n\t\treturn showHide( this, true );\n\t},\n\thide: function() {\n\t\treturn showHide( this );\n\t},\n\ttoggle: function( state ) {\n\t\tif ( typeof state === \"boolean\" ) {\n\t\t\treturn state ? this.show() : this.hide();\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tif ( isHiddenWithinTree( this ) ) {\n\t\t\t\tjQuery( this ).show();\n\t\t\t} else {\n\t\t\t\tjQuery( this ).hide();\n\t\t\t}\n\t\t} );\n\t}\n} );\nvar rcheckableType = ( /^(?:checkbox|radio)$/i );\n\nvar rtagName = ( /<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)/i );\n\nvar rscriptType = ( /^$|^module$|\\/(?:java|ecma)script/i );\n\n\n\n( function() {\n\tvar fragment = document.createDocumentFragment(),\n\t\tdiv = fragment.appendChild( document.createElement( \"div\" ) ),\n\t\tinput = document.createElement( \"input\" );\n\n\t// Support: Android 4.0 - 4.3 only\n\t// Check state lost if the name is set (trac-11217)\n\t// Support: Windows Web Apps (WWA)\n\t// `name` and `type` must use .setAttribute for WWA (trac-14901)\n\tinput.setAttribute( \"type\", \"radio\" );\n\tinput.setAttribute( \"checked\", \"checked\" );\n\tinput.setAttribute( \"name\", \"t\" );\n\n\tdiv.appendChild( input );\n\n\t// Support: Android <=4.1 only\n\t// Older WebKit doesn't clone checked state correctly in fragments\n\tsupport.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;\n\n\t// Support: IE <=11 only\n\t// Make sure textarea (and checkbox) defaultValue is properly cloned\n\tdiv.innerHTML = \"<textarea>x</textarea>\";\n\tsupport.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;\n\n\t// Support: IE <=9 only\n\t// IE <=9 replaces <option> tags with their contents when inserted outside of\n\t// the select element.\n\tdiv.innerHTML = \"<option></option>\";\n\tsupport.option = !!div.lastChild;\n} )();\n\n\n// We have to close these tags to support XHTML (trac-13200)\nvar wrapMap = {\n\n\t// XHTML parsers do not magically insert elements in the\n\t// same way that tag soup parsers do. So we cannot shorten\n\t// this by omitting <tbody> or other required elements.\n\tthead: [ 1, \"<table>\", \"</table>\" ],\n\tcol: [ 2, \"<table><colgroup>\", \"</colgroup></table>\" ],\n\ttr: [ 2, \"<table><tbody>\", \"</tbody></table>\" ],\n\ttd: [ 3, \"<table><tbody><tr>\", \"</tr></tbody></table>\" ],\n\n\t_default: [ 0, \"\", \"\" ]\n};\n\nwrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\nwrapMap.th = wrapMap.td;\n\n// Support: IE <=9 only\nif ( !support.option ) {\n\twrapMap.optgroup = wrapMap.option = [ 1, \"<select multiple='multiple'>\", \"</select>\" ];\n}\n\n\nfunction getAll( context, tag ) {\n\n\t// Support: IE <=9 - 11 only\n\t// Use typeof to avoid zero-argument method invocation on host objects (trac-15151)\n\tvar ret;\n\n\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\tret = context.getElementsByTagName( tag || \"*\" );\n\n\t} else if ( typeof context.querySelectorAll !== \"undefined\" ) {\n\t\tret = context.querySelectorAll( tag || \"*\" );\n\n\t} else {\n\t\tret = [];\n\t}\n\n\tif ( tag === undefined || tag && nodeName( context, tag ) ) {\n\t\treturn jQuery.merge( [ context ], ret );\n\t}\n\n\treturn ret;\n}\n\n\n// Mark scripts as having already been evaluated\nfunction setGlobalEval( elems, refElements ) {\n\tvar i = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\tdataPriv.set(\n\t\t\telems[ i ],\n\t\t\t\"globalEval\",\n\t\t\t!refElements || dataPriv.get( refElements[ i ], \"globalEval\" )\n\t\t);\n\t}\n}\n\n\nvar rhtml = /<|&#?\\w+;/;\n\nfunction buildFragment( elems, context, scripts, selection, ignored ) {\n\tvar elem, tmp, tag, wrap, attached, j,\n\t\tfragment = context.createDocumentFragment(),\n\t\tnodes = [],\n\t\ti = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\telem = elems[ i ];\n\n\t\tif ( elem || elem === 0 ) {\n\n\t\t\t// Add nodes directly\n\t\t\tif ( toType( elem ) === \"object\" ) {\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );\n\n\t\t\t// Convert non-html into a text node\n\t\t\t} else if ( !rhtml.test( elem ) ) {\n\t\t\t\tnodes.push( context.createTextNode( elem ) );\n\n\t\t\t// Convert html into DOM nodes\n\t\t\t} else {\n\t\t\t\ttmp = tmp || fragment.appendChild( context.createElement( \"div\" ) );\n\n\t\t\t\t// Deserialize a standard representation\n\t\t\t\ttag = ( rtagName.exec( elem ) || [ \"\", \"\" ] )[ 1 ].toLowerCase();\n\t\t\t\twrap = wrapMap[ tag ] || wrapMap._default;\n\t\t\t\ttmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];\n\n\t\t\t\t// Descend through wrappers to the right content\n\t\t\t\tj = wrap[ 0 ];\n\t\t\t\twhile ( j-- ) {\n\t\t\t\t\ttmp = tmp.lastChild;\n\t\t\t\t}\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, tmp.childNodes );\n\n\t\t\t\t// Remember the top-level container\n\t\t\t\ttmp = fragment.firstChild;\n\n\t\t\t\t// Ensure the created nodes are orphaned (trac-12392)\n\t\t\t\ttmp.textContent = \"\";\n\t\t\t}\n\t\t}\n\t}\n\n\t// Remove wrapper from fragment\n\tfragment.textContent = \"\";\n\n\ti = 0;\n\twhile ( ( elem = nodes[ i++ ] ) ) {\n\n\t\t// Skip elements already in the context collection (trac-4087)\n\t\tif ( selection && jQuery.inArray( elem, selection ) > -1 ) {\n\t\t\tif ( ignored ) {\n\t\t\t\tignored.push( elem );\n\t\t\t}\n\t\t\tcontinue;\n\t\t}\n\n\t\tattached = isAttached( elem );\n\n\t\t// Append to fragment\n\t\ttmp = getAll( fragment.appendChild( elem ), \"script\" );\n\n\t\t// Preserve script evaluation history\n\t\tif ( attached ) {\n\t\t\tsetGlobalEval( tmp );\n\t\t}\n\n\t\t// Capture executables\n\t\tif ( scripts ) {\n\t\t\tj = 0;\n\t\t\twhile ( ( elem = tmp[ j++ ] ) ) {\n\t\t\t\tif ( rscriptType.test( elem.type || \"\" ) ) {\n\t\t\t\t\tscripts.push( elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn fragment;\n}\n\n\nvar rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n\nfunction returnTrue() {\n\treturn true;\n}\n\nfunction returnFalse() {\n\treturn false;\n}\n\nfunction on( elem, types, selector, data, fn, one ) {\n\tvar origFn, type;\n\n\t// Types can be a map of types/handlers\n\tif ( typeof types === \"object\" ) {\n\n\t\t// ( types-Object, selector, data )\n\t\tif ( typeof selector !== \"string\" ) {\n\n\t\t\t// ( types-Object, data )\n\t\t\tdata = data || selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tfor ( type in types ) {\n\t\t\ton( elem, type, selector, data, types[ type ], one );\n\t\t}\n\t\treturn elem;\n\t}\n\n\tif ( data == null && fn == null ) {\n\n\t\t// ( types, fn )\n\t\tfn = selector;\n\t\tdata = selector = undefined;\n\t} else if ( fn == null ) {\n\t\tif ( typeof selector === \"string\" ) {\n\n\t\t\t// ( types, selector, fn )\n\t\t\tfn = data;\n\t\t\tdata = undefined;\n\t\t} else {\n\n\t\t\t// ( types, data, fn )\n\t\t\tfn = data;\n\t\t\tdata = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t}\n\tif ( fn === false ) {\n\t\tfn = returnFalse;\n\t} else if ( !fn ) {\n\t\treturn elem;\n\t}\n\n\tif ( one === 1 ) {\n\t\torigFn = fn;\n\t\tfn = function( event ) {\n\n\t\t\t// Can use an empty set, since event contains the info\n\t\t\tjQuery().off( event );\n\t\t\treturn origFn.apply( this, arguments );\n\t\t};\n\n\t\t// Use same guid so caller can remove using origFn\n\t\tfn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );\n\t}\n\treturn elem.each( function() {\n\t\tjQuery.event.add( this, types, fn, data, selector );\n\t} );\n}\n\n/*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */\njQuery.event = {\n\n\tglobal: {},\n\n\tadd: function( elem, types, handler, data, selector ) {\n\n\t\tvar handleObjIn, eventHandle, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.get( elem );\n\n\t\t// Only attach events to objects that accept data\n\t\tif ( !acceptData( elem ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Caller can pass in an object of custom data in lieu of the handler\n\t\tif ( handler.handler ) {\n\t\t\thandleObjIn = handler;\n\t\t\thandler = handleObjIn.handler;\n\t\t\tselector = handleObjIn.selector;\n\t\t}\n\n\t\t// Ensure that invalid selectors throw exceptions at attach time\n\t\t// Evaluate against documentElement in case elem is a non-element node (e.g., document)\n\t\tif ( selector ) {\n\t\t\tjQuery.find.matchesSelector( documentElement, selector );\n\t\t}\n\n\t\t// Make sure that the handler has a unique ID, used to find/remove it later\n\t\tif ( !handler.guid ) {\n\t\t\thandler.guid = jQuery.guid++;\n\t\t}\n\n\t\t// Init the element's event structure and main handler, if this is the first\n\t\tif ( !( events = elemData.events ) ) {\n\t\t\tevents = elemData.events = Object.create( null );\n\t\t}\n\t\tif ( !( eventHandle = elemData.handle ) ) {\n\t\t\teventHandle = elemData.handle = function( e ) {\n\n\t\t\t\t// Discard the second event of a jQuery.event.trigger() and\n\t\t\t\t// when an event is called after a page has unloaded\n\t\t\t\treturn typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ?\n\t\t\t\t\tjQuery.event.dispatch.apply( elem, arguments ) : undefined;\n\t\t\t};\n\t\t}\n\n\t\t// Handle multiple events separated by a space\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// There *must* be a type, no attaching namespace-only handlers\n\t\t\tif ( !type ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If event changes its type, use the special event handlers for the changed type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// If selector defined, determine special event api type, otherwise given type\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\n\t\t\t// Update special based on newly reset type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// handleObj is passed to all event handlers\n\t\t\thandleObj = jQuery.extend( {\n\t\t\t\ttype: type,\n\t\t\t\torigType: origType,\n\t\t\t\tdata: data,\n\t\t\t\thandler: handler,\n\t\t\t\tguid: handler.guid,\n\t\t\t\tselector: selector,\n\t\t\t\tneedsContext: selector && jQuery.expr.match.needsContext.test( selector ),\n\t\t\t\tnamespace: namespaces.join( \".\" )\n\t\t\t}, handleObjIn );\n\n\t\t\t// Init the event handler queue if we're the first\n\t\t\tif ( !( handlers = events[ type ] ) ) {\n\t\t\t\thandlers = events[ type ] = [];\n\t\t\t\thandlers.delegateCount = 0;\n\n\t\t\t\t// Only use addEventListener if the special events handler returns false\n\t\t\t\tif ( !special.setup ||\n\t\t\t\t\tspecial.setup.call( elem, data, namespaces, eventHandle ) === false ) {\n\n\t\t\t\t\tif ( elem.addEventListener ) {\n\t\t\t\t\t\telem.addEventListener( type, eventHandle );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( special.add ) {\n\t\t\t\tspecial.add.call( elem, handleObj );\n\n\t\t\t\tif ( !handleObj.handler.guid ) {\n\t\t\t\t\thandleObj.handler.guid = handler.guid;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add to the element's handler list, delegates in front\n\t\t\tif ( selector ) {\n\t\t\t\thandlers.splice( handlers.delegateCount++, 0, handleObj );\n\t\t\t} else {\n\t\t\t\thandlers.push( handleObj );\n\t\t\t}\n\n\t\t\t// Keep track of which events have ever been used, for event optimization\n\t\t\tjQuery.event.global[ type ] = true;\n\t\t}\n\n\t},\n\n\t// Detach an event or set of events from an element\n\tremove: function( elem, types, handler, selector, mappedTypes ) {\n\n\t\tvar j, origCount, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.hasData( elem ) && dataPriv.get( elem );\n\n\t\tif ( !elemData || !( events = elemData.events ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Once for each type.namespace in types; type may be omitted\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// Unbind all events (on this namespace, if provided) for the element\n\t\t\tif ( !type ) {\n\t\t\t\tfor ( type in events ) {\n\t\t\t\t\tjQuery.event.remove( elem, type + types[ t ], handler, selector, true );\n\t\t\t\t}\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\t\t\thandlers = events[ type ] || [];\n\t\t\ttmp = tmp[ 2 ] &&\n\t\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" );\n\n\t\t\t// Remove matching events\n\t\t\torigCount = j = handlers.length;\n\t\t\twhile ( j-- ) {\n\t\t\t\thandleObj = handlers[ j ];\n\n\t\t\t\tif ( ( mappedTypes || origType === handleObj.origType ) &&\n\t\t\t\t\t( !handler || handler.guid === handleObj.guid ) &&\n\t\t\t\t\t( !tmp || tmp.test( handleObj.namespace ) ) &&\n\t\t\t\t\t( !selector || selector === handleObj.selector ||\n\t\t\t\t\t\tselector === \"**\" && handleObj.selector ) ) {\n\t\t\t\t\thandlers.splice( j, 1 );\n\n\t\t\t\t\tif ( handleObj.selector ) {\n\t\t\t\t\t\thandlers.delegateCount--;\n\t\t\t\t\t}\n\t\t\t\t\tif ( special.remove ) {\n\t\t\t\t\t\tspecial.remove.call( elem, handleObj );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Remove generic event handler if we removed something and no more handlers exist\n\t\t\t// (avoids potential for endless recursion during removal of special event handlers)\n\t\t\tif ( origCount && !handlers.length ) {\n\t\t\t\tif ( !special.teardown ||\n\t\t\t\t\tspecial.teardown.call( elem, namespaces, elemData.handle ) === false ) {\n\n\t\t\t\t\tjQuery.removeEvent( elem, type, elemData.handle );\n\t\t\t\t}\n\n\t\t\t\tdelete events[ type ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove data and the expando if it's no longer used\n\t\tif ( jQuery.isEmptyObject( events ) ) {\n\t\t\tdataPriv.remove( elem, \"handle events\" );\n\t\t}\n\t},\n\n\tdispatch: function( nativeEvent ) {\n\n\t\tvar i, j, ret, matched, handleObj, handlerQueue,\n\t\t\targs = new Array( arguments.length ),\n\n\t\t\t// Make a writable jQuery.Event from the native event object\n\t\t\tevent = jQuery.event.fix( nativeEvent ),\n\n\t\t\thandlers = (\n\t\t\t\tdataPriv.get( this, \"events\" ) || Object.create( null )\n\t\t\t)[ event.type ] || [],\n\t\t\tspecial = jQuery.event.special[ event.type ] || {};\n\n\t\t// Use the fix-ed jQuery.Event rather than the (read-only) native event\n\t\targs[ 0 ] = event;\n\n\t\tfor ( i = 1; i < arguments.length; i++ ) {\n\t\t\targs[ i ] = arguments[ i ];\n\t\t}\n\n\t\tevent.delegateTarget = this;\n\n\t\t// Call the preDispatch hook for the mapped type, and let it bail if desired\n\t\tif ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine handlers\n\t\thandlerQueue = jQuery.event.handlers.call( this, event, handlers );\n\n\t\t// Run delegates first; they may want to stop propagation beneath us\n\t\ti = 0;\n\t\twhile ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tevent.currentTarget = matched.elem;\n\n\t\t\tj = 0;\n\t\t\twhile ( ( handleObj = matched.handlers[ j++ ] ) &&\n\t\t\t\t!event.isImmediatePropagationStopped() ) {\n\n\t\t\t\t// If the event is namespaced, then each handler is only invoked if it is\n\t\t\t\t// specially universal or its namespaces are a superset of the event's.\n\t\t\t\tif ( !event.rnamespace || handleObj.namespace === false ||\n\t\t\t\t\tevent.rnamespace.test( handleObj.namespace ) ) {\n\n\t\t\t\t\tevent.handleObj = handleObj;\n\t\t\t\t\tevent.data = handleObj.data;\n\n\t\t\t\t\tret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||\n\t\t\t\t\t\thandleObj.handler ).apply( matched.elem, args );\n\n\t\t\t\t\tif ( ret !== undefined ) {\n\t\t\t\t\t\tif ( ( event.result = ret ) === false ) {\n\t\t\t\t\t\t\tevent.preventDefault();\n\t\t\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Call the postDispatch hook for the mapped type\n\t\tif ( special.postDispatch ) {\n\t\t\tspecial.postDispatch.call( this, event );\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\thandlers: function( event, handlers ) {\n\t\tvar i, handleObj, sel, matchedHandlers, matchedSelectors,\n\t\t\thandlerQueue = [],\n\t\t\tdelegateCount = handlers.delegateCount,\n\t\t\tcur = event.target;\n\n\t\t// Find delegate handlers\n\t\tif ( delegateCount &&\n\n\t\t\t// Support: IE <=9\n\t\t\t// Black-hole SVG <use> instance trees (trac-13180)\n\t\t\tcur.nodeType &&\n\n\t\t\t// Support: Firefox <=42\n\t\t\t// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n\t\t\t// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n\t\t\t// Support: IE 11 only\n\t\t\t// ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n\t\t\t!( event.type === \"click\" && event.button >= 1 ) ) {\n\n\t\t\tfor ( ; cur !== this; cur = cur.parentNode || this ) {\n\n\t\t\t\t// Don't check non-elements (trac-13208)\n\t\t\t\t// Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)\n\t\t\t\tif ( cur.nodeType === 1 && !( event.type === \"click\" && cur.disabled === true ) ) {\n\t\t\t\t\tmatchedHandlers = [];\n\t\t\t\t\tmatchedSelectors = {};\n\t\t\t\t\tfor ( i = 0; i < delegateCount; i++ ) {\n\t\t\t\t\t\thandleObj = handlers[ i ];\n\n\t\t\t\t\t\t// Don't conflict with Object.prototype properties (trac-13203)\n\t\t\t\t\t\tsel = handleObj.selector + \" \";\n\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] === undefined ) {\n\t\t\t\t\t\t\tmatchedSelectors[ sel ] = handleObj.needsContext ?\n\t\t\t\t\t\t\t\tjQuery( sel, this ).index( cur ) > -1 :\n\t\t\t\t\t\t\t\tjQuery.find( sel, this, null, [ cur ] ).length;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] ) {\n\t\t\t\t\t\t\tmatchedHandlers.push( handleObj );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( matchedHandlers.length ) {\n\t\t\t\t\t\thandlerQueue.push( { elem: cur, handlers: matchedHandlers } );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Add the remaining (directly-bound) handlers\n\t\tcur = this;\n\t\tif ( delegateCount < handlers.length ) {\n\t\t\thandlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );\n\t\t}\n\n\t\treturn handlerQueue;\n\t},\n\n\taddProp: function( name, hook ) {\n\t\tObject.defineProperty( jQuery.Event.prototype, name, {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\n\t\t\tget: isFunction( hook ) ?\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn hook( this.originalEvent );\n\t\t\t\t\t}\n\t\t\t\t} :\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn this.originalEvent[ name ];\n\t\t\t\t\t}\n\t\t\t\t},\n\n\t\t\tset: function( value ) {\n\t\t\t\tObject.defineProperty( this, name, {\n\t\t\t\t\tenumerable: true,\n\t\t\t\t\tconfigurable: true,\n\t\t\t\t\twritable: true,\n\t\t\t\t\tvalue: value\n\t\t\t\t} );\n\t\t\t}\n\t\t} );\n\t},\n\n\tfix: function( originalEvent ) {\n\t\treturn originalEvent[ jQuery.expando ] ?\n\t\t\toriginalEvent :\n\t\t\tnew jQuery.Event( originalEvent );\n\t},\n\n\tspecial: {\n\t\tload: {\n\n\t\t\t// Prevent triggered image.load events from bubbling to window.load\n\t\t\tnoBubble: true\n\t\t},\n\t\tclick: {\n\n\t\t\t// Utilize native event to ensure correct state for checkable inputs\n\t\t\tsetup: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Claim the first handler\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\t// dataPriv.set( el, \"click\", ... )\n\t\t\t\t\tleverageNative( el, \"click\", true );\n\t\t\t\t}\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t},\n\t\t\ttrigger: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Force setup before triggering a click\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\tleverageNative( el, \"click\" );\n\t\t\t\t}\n\n\t\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\t\treturn true;\n\t\t\t},\n\n\t\t\t// For cross-browser consistency, suppress native .click() on links\n\t\t\t// Also prevent it if we're currently inside a leveraged native-event stack\n\t\t\t_default: function( event ) {\n\t\t\t\tvar target = event.target;\n\t\t\t\treturn rcheckableType.test( target.type ) &&\n\t\t\t\t\ttarget.click && nodeName( target, \"input\" ) &&\n\t\t\t\t\tdataPriv.get( target, \"click\" ) ||\n\t\t\t\t\tnodeName( target, \"a\" );\n\t\t\t}\n\t\t},\n\n\t\tbeforeunload: {\n\t\t\tpostDispatch: function( event ) {\n\n\t\t\t\t// Support: Firefox 20+\n\t\t\t\t// Firefox doesn't alert if the returnValue field is not set.\n\t\t\t\tif ( event.result !== undefined && event.originalEvent ) {\n\t\t\t\t\tevent.originalEvent.returnValue = event.result;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Ensure the presence of an event listener that handles manually-triggered\n// synthetic events by interrupting progress until reinvoked in response to\n// *native* events that it fires directly, ensuring that state changes have\n// already occurred before other listeners are invoked.\nfunction leverageNative( el, type, isSetup ) {\n\n\t// Missing `isSetup` indicates a trigger call, which must force setup through jQuery.event.add\n\tif ( !isSetup ) {\n\t\tif ( dataPriv.get( el, type ) === undefined ) {\n\t\t\tjQuery.event.add( el, type, returnTrue );\n\t\t}\n\t\treturn;\n\t}\n\n\t// Register the controller as a special universal handler for all event namespaces\n\tdataPriv.set( el, type, false );\n\tjQuery.event.add( el, type, {\n\t\tnamespace: false,\n\t\thandler: function( event ) {\n\t\t\tvar result,\n\t\t\t\tsaved = dataPriv.get( this, type );\n\n\t\t\tif ( ( event.isTrigger & 1 ) && this[ type ] ) {\n\n\t\t\t\t// Interrupt processing of the outer synthetic .trigger()ed event\n\t\t\t\tif ( !saved ) {\n\n\t\t\t\t\t// Store arguments for use when handling the inner native event\n\t\t\t\t\t// There will always be at least one argument (an event object), so this array\n\t\t\t\t\t// will not be confused with a leftover capture object.\n\t\t\t\t\tsaved = slice.call( arguments );\n\t\t\t\t\tdataPriv.set( this, type, saved );\n\n\t\t\t\t\t// Trigger the native event and capture its result\n\t\t\t\t\tthis[ type ]();\n\t\t\t\t\tresult = dataPriv.get( this, type );\n\t\t\t\t\tdataPriv.set( this, type, false );\n\n\t\t\t\t\tif ( saved !== result ) {\n\n\t\t\t\t\t\t// Cancel the outer synthetic event\n\t\t\t\t\t\tevent.stopImmediatePropagation();\n\t\t\t\t\t\tevent.preventDefault();\n\n\t\t\t\t\t\treturn result;\n\t\t\t\t\t}\n\n\t\t\t\t// If this is an inner synthetic event for an event with a bubbling surrogate\n\t\t\t\t// (focus or blur), assume that the surrogate already propagated from triggering\n\t\t\t\t// the native event and prevent that from happening again here.\n\t\t\t\t// This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the\n\t\t\t\t// bubbling surrogate propagates *after* the non-bubbling base), but that seems\n\t\t\t\t// less bad than duplication.\n\t\t\t\t} else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) {\n\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t}\n\n\t\t\t// If this is a native event triggered above, everything is now in order\n\t\t\t// Fire an inner synthetic event with the original arguments\n\t\t\t} else if ( saved ) {\n\n\t\t\t\t// ...and capture the result\n\t\t\t\tdataPriv.set( this, type, jQuery.event.trigger(\n\t\t\t\t\tsaved[ 0 ],\n\t\t\t\t\tsaved.slice( 1 ),\n\t\t\t\t\tthis\n\t\t\t\t) );\n\n\t\t\t\t// Abort handling of the native event by all jQuery handlers while allowing\n\t\t\t\t// native handlers on the same element to run. On target, this is achieved\n\t\t\t\t// by stopping immediate propagation just on the jQuery event. However,\n\t\t\t\t// the native event is re-wrapped by a jQuery one on each level of the\n\t\t\t\t// propagation so the only way to stop it for jQuery is to stop it for\n\t\t\t\t// everyone via native `stopPropagation()`. This is not a problem for\n\t\t\t\t// focus/blur which don't bubble, but it does also stop click on checkboxes\n\t\t\t\t// and radios. We accept this limitation.\n\t\t\t\tevent.stopPropagation();\n\t\t\t\tevent.isImmediatePropagationStopped = returnTrue;\n\t\t\t}\n\t\t}\n\t} );\n}\n\njQuery.removeEvent = function( elem, type, handle ) {\n\n\t// This \"if\" is needed for plain objects\n\tif ( elem.removeEventListener ) {\n\t\telem.removeEventListener( type, handle );\n\t}\n};\n\njQuery.Event = function( src, props ) {\n\n\t// Allow instantiation without the 'new' keyword\n\tif ( !( this instanceof jQuery.Event ) ) {\n\t\treturn new jQuery.Event( src, props );\n\t}\n\n\t// Event object\n\tif ( src && src.type ) {\n\t\tthis.originalEvent = src;\n\t\tthis.type = src.type;\n\n\t\t// Events bubbling up the document may have been marked as prevented\n\t\t// by a handler lower down the tree; reflect the correct value.\n\t\tthis.isDefaultPrevented = src.defaultPrevented ||\n\t\t\t\tsrc.defaultPrevented === undefined &&\n\n\t\t\t\t// Support: Android <=2.3 only\n\t\t\t\tsrc.returnValue === false ?\n\t\t\treturnTrue :\n\t\t\treturnFalse;\n\n\t\t// Create target properties\n\t\t// Support: Safari <=6 - 7 only\n\t\t// Target should not be a text node (trac-504, trac-13143)\n\t\tthis.target = ( src.target && src.target.nodeType === 3 ) ?\n\t\t\tsrc.target.parentNode :\n\t\t\tsrc.target;\n\n\t\tthis.currentTarget = src.currentTarget;\n\t\tthis.relatedTarget = src.relatedTarget;\n\n\t// Event type\n\t} else {\n\t\tthis.type = src;\n\t}\n\n\t// Put explicitly provided properties onto the event object\n\tif ( props ) {\n\t\tjQuery.extend( this, props );\n\t}\n\n\t// Create a timestamp if incoming event doesn't have one\n\tthis.timeStamp = src && src.timeStamp || Date.now();\n\n\t// Mark it as fixed\n\tthis[ jQuery.expando ] = true;\n};\n\n// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\njQuery.Event.prototype = {\n\tconstructor: jQuery.Event,\n\tisDefaultPrevented: returnFalse,\n\tisPropagationStopped: returnFalse,\n\tisImmediatePropagationStopped: returnFalse,\n\tisSimulated: false,\n\n\tpreventDefault: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isDefaultPrevented = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.preventDefault();\n\t\t}\n\t},\n\tstopPropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isPropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopPropagation();\n\t\t}\n\t},\n\tstopImmediatePropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isImmediatePropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopImmediatePropagation();\n\t\t}\n\n\t\tthis.stopPropagation();\n\t}\n};\n\n// Includes all common event props including KeyEvent and MouseEvent specific props\njQuery.each( {\n\taltKey: true,\n\tbubbles: true,\n\tcancelable: true,\n\tchangedTouches: true,\n\tctrlKey: true,\n\tdetail: true,\n\teventPhase: true,\n\tmetaKey: true,\n\tpageX: true,\n\tpageY: true,\n\tshiftKey: true,\n\tview: true,\n\t\"char\": true,\n\tcode: true,\n\tcharCode: true,\n\tkey: true,\n\tkeyCode: true,\n\tbutton: true,\n\tbuttons: true,\n\tclientX: true,\n\tclientY: true,\n\toffsetX: true,\n\toffsetY: true,\n\tpointerId: true,\n\tpointerType: true,\n\tscreenX: true,\n\tscreenY: true,\n\ttargetTouches: true,\n\ttoElement: true,\n\ttouches: true,\n\twhich: true\n}, jQuery.event.addProp );\n\njQuery.each( { focus: \"focusin\", blur: \"focusout\" }, function( type, delegateType ) {\n\n\tfunction focusMappedHandler( nativeEvent ) {\n\t\tif ( document.documentMode ) {\n\n\t\t\t// Support: IE 11+\n\t\t\t// Attach a single focusin/focusout handler on the document while someone wants\n\t\t\t// focus/blur. This is because the former are synchronous in IE while the latter\n\t\t\t// are async. In other browsers, all those handlers are invoked synchronously.\n\n\t\t\t// `handle` from private data would already wrap the event, but we need\n\t\t\t// to change the `type` here.\n\t\t\tvar handle = dataPriv.get( this, \"handle\" ),\n\t\t\t\tevent = jQuery.event.fix( nativeEvent );\n\t\t\tevent.type = nativeEvent.type === \"focusin\" ? \"focus\" : \"blur\";\n\t\t\tevent.isSimulated = true;\n\n\t\t\t// First, handle focusin/focusout\n\t\t\thandle( nativeEvent );\n\n\t\t\t// ...then, handle focus/blur\n\t\t\t//\n\t\t\t// focus/blur don't bubble while focusin/focusout do; simulate the former by only\n\t\t\t// invoking the handler at the lower level.\n\t\t\tif ( event.target === event.currentTarget ) {\n\n\t\t\t\t// The setup part calls `leverageNative`, which, in turn, calls\n\t\t\t\t// `jQuery.event.add`, so event handle will already have been set\n\t\t\t\t// by this point.\n\t\t\t\thandle( event );\n\t\t\t}\n\t\t} else {\n\n\t\t\t// For non-IE browsers, attach a single capturing handler on the document\n\t\t\t// while someone wants focusin/focusout.\n\t\t\tjQuery.event.simulate( delegateType, nativeEvent.target,\n\t\t\t\tjQuery.event.fix( nativeEvent ) );\n\t\t}\n\t}\n\n\tjQuery.event.special[ type ] = {\n\n\t\t// Utilize native event if possible so blur/focus sequence is correct\n\t\tsetup: function() {\n\n\t\t\tvar attaches;\n\n\t\t\t// Claim the first handler\n\t\t\t// dataPriv.set( this, \"focus\", ... )\n\t\t\t// dataPriv.set( this, \"blur\", ... )\n\t\t\tleverageNative( this, type, true );\n\n\t\t\tif ( document.documentMode ) {\n\n\t\t\t\t// Support: IE 9 - 11+\n\t\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\t\tattaches = dataPriv.get( this, delegateType );\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t}\n\t\t\t\tdataPriv.set( this, delegateType, ( attaches || 0 ) + 1 );\n\t\t\t} else {\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\t\ttrigger: function() {\n\n\t\t\t// Force setup before trigger\n\t\t\tleverageNative( this, type );\n\n\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\treturn true;\n\t\t},\n\n\t\tteardown: function() {\n\t\t\tvar attaches;\n\n\t\t\tif ( document.documentMode ) {\n\t\t\t\tattaches = dataPriv.get( this, delegateType ) - 1;\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t\tdataPriv.remove( this, delegateType );\n\t\t\t\t} else {\n\t\t\t\t\tdataPriv.set( this, delegateType, attaches );\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Return false to indicate standard teardown should be applied\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\n\t\t// Suppress native focus or blur if we're currently inside\n\t\t// a leveraged native-event stack\n\t\t_default: function( event ) {\n\t\t\treturn dataPriv.get( event.target, type );\n\t\t},\n\n\t\tdelegateType: delegateType\n\t};\n\n\t// Support: Firefox <=44\n\t// Firefox doesn't have focus(in | out) events\n\t// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n\t//\n\t// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n\t// focus(in | out) events fire after focus & blur events,\n\t// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n\t// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\n\t//\n\t// Support: IE 9 - 11+\n\t// To preserve relative focusin/focus & focusout/blur event order guaranteed on the 3.x branch,\n\t// attach a single handler for both events in IE.\n\tjQuery.event.special[ delegateType ] = {\n\t\tsetup: function() {\n\n\t\t\t// Handle: regular nodes (via `this.ownerDocument`), window\n\t\t\t// (via `this.document`) & document (via `this`).\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType );\n\n\t\t\t// Support: IE 9 - 11+\n\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.addEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t}\n\t\t\tdataPriv.set( dataHolder, delegateType, ( attaches || 0 ) + 1 );\n\t\t},\n\t\tteardown: function() {\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType ) - 1;\n\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.removeEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( dataHolder, delegateType );\n\t\t\t} else {\n\t\t\t\tdataPriv.set( dataHolder, delegateType, attaches );\n\t\t\t}\n\t\t}\n\t};\n} );\n\n// Create mouseenter/leave events using mouseover/out and event-time checks\n// so that event delegation works in jQuery.\n// Do the same for pointerenter/pointerleave and pointerover/pointerout\n//\n// Support: Safari 7 only\n// Safari sends mouseenter too often; see:\n// https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n// for the description of the bug (it existed in older Chrome versions as well).\njQuery.each( {\n\tmouseenter: \"mouseover\",\n\tmouseleave: \"mouseout\",\n\tpointerenter: \"pointerover\",\n\tpointerleave: \"pointerout\"\n}, function( orig, fix ) {\n\tjQuery.event.special[ orig ] = {\n\t\tdelegateType: fix,\n\t\tbindType: fix,\n\n\t\thandle: function( event ) {\n\t\t\tvar ret,\n\t\t\t\ttarget = this,\n\t\t\t\trelated = event.relatedTarget,\n\t\t\t\thandleObj = event.handleObj;\n\n\t\t\t// For mouseenter/leave call the handler if related is outside the target.\n\t\t\t// NB: No relatedTarget if the mouse left/entered the browser window\n\t\t\tif ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {\n\t\t\t\tevent.type = handleObj.origType;\n\t\t\t\tret = handleObj.handler.apply( this, arguments );\n\t\t\t\tevent.type = fix;\n\t\t\t}\n\t\t\treturn ret;\n\t\t}\n\t};\n} );\n\njQuery.fn.extend( {\n\n\ton: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn );\n\t},\n\tone: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn, 1 );\n\t},\n\toff: function( types, selector, fn ) {\n\t\tvar handleObj, type;\n\t\tif ( types && types.preventDefault && types.handleObj ) {\n\n\t\t\t// ( event )  dispatched jQuery.Event\n\t\t\thandleObj = types.handleObj;\n\t\t\tjQuery( types.delegateTarget ).off(\n\t\t\t\thandleObj.namespace ?\n\t\t\t\t\thandleObj.origType + \".\" + handleObj.namespace :\n\t\t\t\t\thandleObj.origType,\n\t\t\t\thandleObj.selector,\n\t\t\t\thandleObj.handler\n\t\t\t);\n\t\t\treturn this;\n\t\t}\n\t\tif ( typeof types === \"object\" ) {\n\n\t\t\t// ( types-object [, selector] )\n\t\t\tfor ( type in types ) {\n\t\t\t\tthis.off( type, selector, types[ type ] );\n\t\t\t}\n\t\t\treturn this;\n\t\t}\n\t\tif ( selector === false || typeof selector === \"function\" ) {\n\n\t\t\t// ( types [, fn] )\n\t\t\tfn = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tif ( fn === false ) {\n\t\t\tfn = returnFalse;\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.remove( this, types, fn, selector );\n\t\t} );\n\t}\n} );\n\n\nvar\n\n\t// Support: IE <=10 - 11, Edge 12 - 13 only\n\t// In IE/Edge using regex groups here causes severe slowdowns.\n\t// See https://connect.microsoft.com/IE/feedback/details/1736512/\n\trnoInnerhtml = /<script|<style|<link/i,\n\n\t// checked=\"checked\" or checked\n\trchecked = /checked\\s*(?:[^=]|=\\s*.checked.)/i,\n\n\trcleanScript = /^\\s*<!\\[CDATA\\[|\\]\\]>\\s*$/g;\n\n// Prefer a tbody over its parent table for containing new rows\nfunction manipulationTarget( elem, content ) {\n\tif ( nodeName( elem, \"table\" ) &&\n\t\tnodeName( content.nodeType !== 11 ? content : content.firstChild, \"tr\" ) ) {\n\n\t\treturn jQuery( elem ).children( \"tbody\" )[ 0 ] || elem;\n\t}\n\n\treturn elem;\n}\n\n// Replace/restore the type attribute of script elements for safe DOM manipulation\nfunction disableScript( elem ) {\n\telem.type = ( elem.getAttribute( \"type\" ) !== null ) + \"/\" + elem.type;\n\treturn elem;\n}\nfunction restoreScript( elem ) {\n\tif ( ( elem.type || \"\" ).slice( 0, 5 ) === \"true/\" ) {\n\t\telem.type = elem.type.slice( 5 );\n\t} else {\n\t\telem.removeAttribute( \"type\" );\n\t}\n\n\treturn elem;\n}\n\nfunction cloneCopyEvent( src, dest ) {\n\tvar i, l, type, pdataOld, udataOld, udataCur, events;\n\n\tif ( dest.nodeType !== 1 ) {\n\t\treturn;\n\t}\n\n\t// 1. Copy private data: events, handlers, etc.\n\tif ( dataPriv.hasData( src ) ) {\n\t\tpdataOld = dataPriv.get( src );\n\t\tevents = pdataOld.events;\n\n\t\tif ( events ) {\n\t\t\tdataPriv.remove( dest, \"handle events\" );\n\n\t\t\tfor ( type in events ) {\n\t\t\t\tfor ( i = 0, l = events[ type ].length; i < l; i++ ) {\n\t\t\t\t\tjQuery.event.add( dest, type, events[ type ][ i ] );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// 2. Copy user data\n\tif ( dataUser.hasData( src ) ) {\n\t\tudataOld = dataUser.access( src );\n\t\tudataCur = jQuery.extend( {}, udataOld );\n\n\t\tdataUser.set( dest, udataCur );\n\t}\n}\n\n// Fix IE bugs, see support tests\nfunction fixInput( src, dest ) {\n\tvar nodeName = dest.nodeName.toLowerCase();\n\n\t// Fails to persist the checked state of a cloned checkbox or radio button.\n\tif ( nodeName === \"input\" && rcheckableType.test( src.type ) ) {\n\t\tdest.checked = src.checked;\n\n\t// Fails to return the selected option to the default selected state when cloning options\n\t} else if ( nodeName === \"input\" || nodeName === \"textarea\" ) {\n\t\tdest.defaultValue = src.defaultValue;\n\t}\n}\n\nfunction domManip( collection, args, callback, ignored ) {\n\n\t// Flatten any nested arrays\n\targs = flat( args );\n\n\tvar fragment, first, scripts, hasScripts, node, doc,\n\t\ti = 0,\n\t\tl = collection.length,\n\t\tiNoClone = l - 1,\n\t\tvalue = args[ 0 ],\n\t\tvalueIsFunction = isFunction( value );\n\n\t// We can't cloneNode fragments that contain checked, in WebKit\n\tif ( valueIsFunction ||\n\t\t\t( l > 1 && typeof value === \"string\" &&\n\t\t\t\t!support.checkClone && rchecked.test( value ) ) ) {\n\t\treturn collection.each( function( index ) {\n\t\t\tvar self = collection.eq( index );\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\targs[ 0 ] = value.call( this, index, self.html() );\n\t\t\t}\n\t\t\tdomManip( self, args, callback, ignored );\n\t\t} );\n\t}\n\n\tif ( l ) {\n\t\tfragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );\n\t\tfirst = fragment.firstChild;\n\n\t\tif ( fragment.childNodes.length === 1 ) {\n\t\t\tfragment = first;\n\t\t}\n\n\t\t// Require either new content or an interest in ignored elements to invoke the callback\n\t\tif ( first || ignored ) {\n\t\t\tscripts = jQuery.map( getAll( fragment, \"script\" ), disableScript );\n\t\t\thasScripts = scripts.length;\n\n\t\t\t// Use the original fragment for the last item\n\t\t\t// instead of the first because it can end up\n\t\t\t// being emptied incorrectly in certain situations (trac-8070).\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tnode = fragment;\n\n\t\t\t\tif ( i !== iNoClone ) {\n\t\t\t\t\tnode = jQuery.clone( node, true, true );\n\n\t\t\t\t\t// Keep references to cloned scripts for later restoration\n\t\t\t\t\tif ( hasScripts ) {\n\n\t\t\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\t\t\tjQuery.merge( scripts, getAll( node, \"script\" ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tcallback.call( collection[ i ], node, i );\n\t\t\t}\n\n\t\t\tif ( hasScripts ) {\n\t\t\t\tdoc = scripts[ scripts.length - 1 ].ownerDocument;\n\n\t\t\t\t// Re-enable scripts\n\t\t\t\tjQuery.map( scripts, restoreScript );\n\n\t\t\t\t// Evaluate executable scripts on first document insertion\n\t\t\t\tfor ( i = 0; i < hasScripts; i++ ) {\n\t\t\t\t\tnode = scripts[ i ];\n\t\t\t\t\tif ( rscriptType.test( node.type || \"\" ) &&\n\t\t\t\t\t\t!dataPriv.access( node, \"globalEval\" ) &&\n\t\t\t\t\t\tjQuery.contains( doc, node ) ) {\n\n\t\t\t\t\t\tif ( node.src && ( node.type || \"\" ).toLowerCase()  !== \"module\" ) {\n\n\t\t\t\t\t\t\t// Optional AJAX dependency, but won't run scripts if not present\n\t\t\t\t\t\t\tif ( jQuery._evalUrl && !node.noModule ) {\n\t\t\t\t\t\t\t\tjQuery._evalUrl( node.src, {\n\t\t\t\t\t\t\t\t\tnonce: node.nonce || node.getAttribute( \"nonce\" )\n\t\t\t\t\t\t\t\t}, doc );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Unwrap a CDATA section containing script contents. This shouldn't be\n\t\t\t\t\t\t\t// needed as in XML documents they're already not visible when\n\t\t\t\t\t\t\t// inspecting element contents and in HTML documents they have no\n\t\t\t\t\t\t\t// meaning but we're preserving that logic for backwards compatibility.\n\t\t\t\t\t\t\t// This will be removed completely in 4.0. See gh-4904.\n\t\t\t\t\t\t\tDOMEval( node.textContent.replace( rcleanScript, \"\" ), node, doc );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn collection;\n}\n\nfunction remove( elem, selector, keepData ) {\n\tvar node,\n\t\tnodes = selector ? jQuery.filter( selector, elem ) : elem,\n\t\ti = 0;\n\n\tfor ( ; ( node = nodes[ i ] ) != null; i++ ) {\n\t\tif ( !keepData && node.nodeType === 1 ) {\n\t\t\tjQuery.cleanData( getAll( node ) );\n\t\t}\n\n\t\tif ( node.parentNode ) {\n\t\t\tif ( keepData && isAttached( node ) ) {\n\t\t\t\tsetGlobalEval( getAll( node, \"script\" ) );\n\t\t\t}\n\t\t\tnode.parentNode.removeChild( node );\n\t\t}\n\t}\n\n\treturn elem;\n}\n\njQuery.extend( {\n\thtmlPrefilter: function( html ) {\n\t\treturn html;\n\t},\n\n\tclone: function( elem, dataAndEvents, deepDataAndEvents ) {\n\t\tvar i, l, srcElements, destElements,\n\t\t\tclone = elem.cloneNode( true ),\n\t\t\tinPage = isAttached( elem );\n\n\t\t// Fix IE cloning issues\n\t\tif ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&\n\t\t\t\t!jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// We eschew jQuery#find here for performance reasons:\n\t\t\t// https://jsperf.com/getall-vs-sizzle/2\n\t\t\tdestElements = getAll( clone );\n\t\t\tsrcElements = getAll( elem );\n\n\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\tfixInput( srcElements[ i ], destElements[ i ] );\n\t\t\t}\n\t\t}\n\n\t\t// Copy the events from the original to the clone\n\t\tif ( dataAndEvents ) {\n\t\t\tif ( deepDataAndEvents ) {\n\t\t\t\tsrcElements = srcElements || getAll( elem );\n\t\t\t\tdestElements = destElements || getAll( clone );\n\n\t\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\t\tcloneCopyEvent( srcElements[ i ], destElements[ i ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tcloneCopyEvent( elem, clone );\n\t\t\t}\n\t\t}\n\n\t\t// Preserve script evaluation history\n\t\tdestElements = getAll( clone, \"script\" );\n\t\tif ( destElements.length > 0 ) {\n\t\t\tsetGlobalEval( destElements, !inPage && getAll( elem, \"script\" ) );\n\t\t}\n\n\t\t// Return the cloned set\n\t\treturn clone;\n\t},\n\n\tcleanData: function( elems ) {\n\t\tvar data, elem, type,\n\t\t\tspecial = jQuery.event.special,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {\n\t\t\tif ( acceptData( elem ) ) {\n\t\t\t\tif ( ( data = elem[ dataPriv.expando ] ) ) {\n\t\t\t\t\tif ( data.events ) {\n\t\t\t\t\t\tfor ( type in data.events ) {\n\t\t\t\t\t\t\tif ( special[ type ] ) {\n\t\t\t\t\t\t\t\tjQuery.event.remove( elem, type );\n\n\t\t\t\t\t\t\t// This is a shortcut to avoid jQuery.event.remove's overhead\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tjQuery.removeEvent( elem, type, data.handle );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataPriv.expando ] = undefined;\n\t\t\t\t}\n\t\t\t\tif ( elem[ dataUser.expando ] ) {\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataUser.expando ] = undefined;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n} );\n\njQuery.fn.extend( {\n\tdetach: function( selector ) {\n\t\treturn remove( this, selector, true );\n\t},\n\n\tremove: function( selector ) {\n\t\treturn remove( this, selector );\n\t},\n\n\ttext: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\treturn value === undefined ?\n\t\t\t\tjQuery.text( this ) :\n\t\t\t\tthis.empty().each( function() {\n\t\t\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\t\t\tthis.textContent = value;\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t}, null, value, arguments.length );\n\t},\n\n\tappend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.appendChild( elem );\n\t\t\t}\n\t\t} );\n\t},\n\n\tprepend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.insertBefore( elem, target.firstChild );\n\t\t\t}\n\t\t} );\n\t},\n\n\tbefore: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this );\n\t\t\t}\n\t\t} );\n\t},\n\n\tafter: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this.nextSibling );\n\t\t\t}\n\t\t} );\n\t},\n\n\tempty: function() {\n\t\tvar elem,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = this[ i ] ) != null; i++ ) {\n\t\t\tif ( elem.nodeType === 1 ) {\n\n\t\t\t\t// Prevent memory leaks\n\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\n\t\t\t\t// Remove any remaining nodes\n\t\t\t\telem.textContent = \"\";\n\t\t\t}\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tclone: function( dataAndEvents, deepDataAndEvents ) {\n\t\tdataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n\t\tdeepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n\n\t\treturn this.map( function() {\n\t\t\treturn jQuery.clone( this, dataAndEvents, deepDataAndEvents );\n\t\t} );\n\t},\n\n\thtml: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\tvar elem = this[ 0 ] || {},\n\t\t\t\ti = 0,\n\t\t\t\tl = this.length;\n\n\t\t\tif ( value === undefined && elem.nodeType === 1 ) {\n\t\t\t\treturn elem.innerHTML;\n\t\t\t}\n\n\t\t\t// See if we can take a shortcut and just use innerHTML\n\t\t\tif ( typeof value === \"string\" && !rnoInnerhtml.test( value ) &&\n\t\t\t\t!wrapMap[ ( rtagName.exec( value ) || [ \"\", \"\" ] )[ 1 ].toLowerCase() ] ) {\n\n\t\t\t\tvalue = jQuery.htmlPrefilter( value );\n\n\t\t\t\ttry {\n\t\t\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\t\t\telem = this[ i ] || {};\n\n\t\t\t\t\t\t// Remove element nodes and prevent memory leaks\n\t\t\t\t\t\tif ( elem.nodeType === 1 ) {\n\t\t\t\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\t\t\t\t\t\t\telem.innerHTML = value;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\telem = 0;\n\n\t\t\t\t// If using innerHTML throws an exception, use the fallback method\n\t\t\t\t} catch ( e ) {}\n\t\t\t}\n\n\t\t\tif ( elem ) {\n\t\t\t\tthis.empty().append( value );\n\t\t\t}\n\t\t}, null, value, arguments.length );\n\t},\n\n\treplaceWith: function() {\n\t\tvar ignored = [];\n\n\t\t// Make the changes, replacing each non-ignored context element with the new content\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tvar parent = this.parentNode;\n\n\t\t\tif ( jQuery.inArray( this, ignored ) < 0 ) {\n\t\t\t\tjQuery.cleanData( getAll( this ) );\n\t\t\t\tif ( parent ) {\n\t\t\t\t\tparent.replaceChild( elem, this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Force callback invocation\n\t\t}, ignored );\n\t}\n} );\n\njQuery.each( {\n\tappendTo: \"append\",\n\tprependTo: \"prepend\",\n\tinsertBefore: \"before\",\n\tinsertAfter: \"after\",\n\treplaceAll: \"replaceWith\"\n}, function( name, original ) {\n\tjQuery.fn[ name ] = function( selector ) {\n\t\tvar elems,\n\t\t\tret = [],\n\t\t\tinsert = jQuery( selector ),\n\t\t\tlast = insert.length - 1,\n\t\t\ti = 0;\n\n\t\tfor ( ; i <= last; i++ ) {\n\t\t\telems = i === last ? this : this.clone( true );\n\t\t\tjQuery( insert[ i ] )[ original ]( elems );\n\n\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t// .get() because push.apply(_, arraylike) throws on ancient WebKit\n\t\t\tpush.apply( ret, elems.get() );\n\t\t}\n\n\t\treturn this.pushStack( ret );\n\t};\n} );\nvar rnumnonpx = new RegExp( \"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\" );\n\nvar rcustomProp = /^--/;\n\n\nvar getStyles = function( elem ) {\n\n\t\t// Support: IE <=11 only, Firefox <=30 (trac-15098, trac-14150)\n\t\t// IE throws on elements created in popups\n\t\t// FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n\t\tvar view = elem.ownerDocument.defaultView;\n\n\t\tif ( !view || !view.opener ) {\n\t\t\tview = window;\n\t\t}\n\n\t\treturn view.getComputedStyle( elem );\n\t};\n\nvar swap = function( elem, options, callback ) {\n\tvar ret, name,\n\t\told = {};\n\n\t// Remember the old values, and insert the new ones\n\tfor ( name in options ) {\n\t\told[ name ] = elem.style[ name ];\n\t\telem.style[ name ] = options[ name ];\n\t}\n\n\tret = callback.call( elem );\n\n\t// Revert the old values\n\tfor ( name in options ) {\n\t\telem.style[ name ] = old[ name ];\n\t}\n\n\treturn ret;\n};\n\n\nvar rboxStyle = new RegExp( cssExpand.join( \"|\" ), \"i\" );\n\n\n\n( function() {\n\n\t// Executing both pixelPosition & boxSizingReliable tests require only one layout\n\t// so they're executed at the same time to save the second computation.\n\tfunction computeStyleTests() {\n\n\t\t// This is a singleton, we need to execute it only once\n\t\tif ( !div ) {\n\t\t\treturn;\n\t\t}\n\n\t\tcontainer.style.cssText = \"position:absolute;left:-11111px;width:60px;\" +\n\t\t\t\"margin-top:1px;padding:0;border:0\";\n\t\tdiv.style.cssText =\n\t\t\t\"position:relative;display:block;box-sizing:border-box;overflow:scroll;\" +\n\t\t\t\"margin:auto;border:1px;padding:1px;\" +\n\t\t\t\"width:60%;top:1%\";\n\t\tdocumentElement.appendChild( container ).appendChild( div );\n\n\t\tvar divStyle = window.getComputedStyle( div );\n\t\tpixelPositionVal = divStyle.top !== \"1%\";\n\n\t\t// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n\t\treliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;\n\n\t\t// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n\t\t// Some styles come back with percentage values, even though they shouldn't\n\t\tdiv.style.right = \"60%\";\n\t\tpixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;\n\n\t\t// Support: IE 9 - 11 only\n\t\t// Detect misreporting of content dimensions for box-sizing:border-box elements\n\t\tboxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;\n\n\t\t// Support: IE 9 only\n\t\t// Detect overflow:scroll screwiness (gh-3699)\n\t\t// Support: Chrome <=64\n\t\t// Don't get tricked when zoom affects offsetWidth (gh-4029)\n\t\tdiv.style.position = \"absolute\";\n\t\tscrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12;\n\n\t\tdocumentElement.removeChild( container );\n\n\t\t// Nullify the div so it wouldn't be stored in the memory and\n\t\t// it will also be a sign that checks already performed\n\t\tdiv = null;\n\t}\n\n\tfunction roundPixelMeasures( measure ) {\n\t\treturn Math.round( parseFloat( measure ) );\n\t}\n\n\tvar pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,\n\t\treliableTrDimensionsVal, reliableMarginLeftVal,\n\t\tcontainer = document.createElement( \"div\" ),\n\t\tdiv = document.createElement( \"div\" );\n\n\t// Finish early in limited (non-browser) environments\n\tif ( !div.style ) {\n\t\treturn;\n\t}\n\n\t// Support: IE <=9 - 11 only\n\t// Style of cloned element affects source element cloned (trac-8908)\n\tdiv.style.backgroundClip = \"content-box\";\n\tdiv.cloneNode( true ).style.backgroundClip = \"\";\n\tsupport.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n\n\tjQuery.extend( support, {\n\t\tboxSizingReliable: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn boxSizingReliableVal;\n\t\t},\n\t\tpixelBoxStyles: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelBoxStylesVal;\n\t\t},\n\t\tpixelPosition: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelPositionVal;\n\t\t},\n\t\treliableMarginLeft: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn reliableMarginLeftVal;\n\t\t},\n\t\tscrollboxSize: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn scrollboxSizeVal;\n\t\t},\n\n\t\t// Support: IE 9 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Behavior in IE 9 is more subtle than in newer versions & it passes\n\t\t// some versions of this test; make sure not to make it pass there!\n\t\t//\n\t\t// Support: Firefox 70+\n\t\t// Only Firefox includes border widths\n\t\t// in computed dimensions. (gh-4529)\n\t\treliableTrDimensions: function() {\n\t\t\tvar table, tr, trChild, trStyle;\n\t\t\tif ( reliableTrDimensionsVal == null ) {\n\t\t\t\ttable = document.createElement( \"table\" );\n\t\t\t\ttr = document.createElement( \"tr\" );\n\t\t\t\ttrChild = document.createElement( \"div\" );\n\n\t\t\t\ttable.style.cssText = \"position:absolute;left:-11111px;border-collapse:separate\";\n\t\t\t\ttr.style.cssText = \"box-sizing:content-box;border:1px solid\";\n\n\t\t\t\t// Support: Chrome 86+\n\t\t\t\t// Height set through cssText does not get applied.\n\t\t\t\t// Computed height then comes back as 0.\n\t\t\t\ttr.style.height = \"1px\";\n\t\t\t\ttrChild.style.height = \"9px\";\n\n\t\t\t\t// Support: Android 8 Chrome 86+\n\t\t\t\t// In our bodyBackground.html iframe,\n\t\t\t\t// display for all div elements is set to \"inline\",\n\t\t\t\t// which causes a problem only in Android 8 Chrome 86.\n\t\t\t\t// Ensuring the div is `display: block`\n\t\t\t\t// gets around this issue.\n\t\t\t\ttrChild.style.display = \"block\";\n\n\t\t\t\tdocumentElement\n\t\t\t\t\t.appendChild( table )\n\t\t\t\t\t.appendChild( tr )\n\t\t\t\t\t.appendChild( trChild );\n\n\t\t\t\ttrStyle = window.getComputedStyle( tr );\n\t\t\t\treliableTrDimensionsVal = ( parseInt( trStyle.height, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderTopWidth, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderBottomWidth, 10 ) ) === tr.offsetHeight;\n\n\t\t\t\tdocumentElement.removeChild( table );\n\t\t\t}\n\t\t\treturn reliableTrDimensionsVal;\n\t\t}\n\t} );\n} )();\n\n\nfunction curCSS( elem, name, computed ) {\n\tvar width, minWidth, maxWidth, ret,\n\t\tisCustomProp = rcustomProp.test( name ),\n\n\t\t// Support: Firefox 51+\n\t\t// Retrieving style before computed somehow\n\t\t// fixes an issue with getting wrong values\n\t\t// on detached elements\n\t\tstyle = elem.style;\n\n\tcomputed = computed || getStyles( elem );\n\n\t// getPropertyValue is needed for:\n\t//   .css('filter') (IE 9 only, trac-12537)\n\t//   .css('--customProperty) (gh-3144)\n\tif ( computed ) {\n\n\t\t// Support: IE <=9 - 11+\n\t\t// IE only supports `\"float\"` in `getPropertyValue`; in computed styles\n\t\t// it's only available as `\"cssFloat\"`. We no longer modify properties\n\t\t// sent to `.css()` apart from camelCasing, so we need to check both.\n\t\t// Normally, this would create difference in behavior: if\n\t\t// `getPropertyValue` returns an empty string, the value returned\n\t\t// by `.css()` would be `undefined`. This is usually the case for\n\t\t// disconnected elements. However, in IE even disconnected elements\n\t\t// with no styles return `\"none\"` for `getPropertyValue( \"float\" )`\n\t\tret = computed.getPropertyValue( name ) || computed[ name ];\n\n\t\tif ( isCustomProp && ret ) {\n\n\t\t\t// Support: Firefox 105+, Chrome <=105+\n\t\t\t// Spec requires trimming whitespace for custom properties (gh-4926).\n\t\t\t// Firefox only trims leading whitespace. Chrome just collapses\n\t\t\t// both leading & trailing whitespace to a single space.\n\t\t\t//\n\t\t\t// Fall back to `undefined` if empty string returned.\n\t\t\t// This collapses a missing definition with property defined\n\t\t\t// and set to an empty string but there's no standard API\n\t\t\t// allowing us to differentiate them without a performance penalty\n\t\t\t// and returning `undefined` aligns with older jQuery.\n\t\t\t//\n\t\t\t// rtrimCSS treats U+000D CARRIAGE RETURN and U+000C FORM FEED\n\t\t\t// as whitespace while CSS does not, but this is not a problem\n\t\t\t// because CSS preprocessing replaces them with U+000A LINE FEED\n\t\t\t// (which *is* CSS whitespace)\n\t\t\t// https://www.w3.org/TR/css-syntax-3/#input-preprocessing\n\t\t\tret = ret.replace( rtrimCSS, \"$1\" ) || undefined;\n\t\t}\n\n\t\tif ( ret === \"\" && !isAttached( elem ) ) {\n\t\t\tret = jQuery.style( elem, name );\n\t\t}\n\n\t\t// A tribute to the \"awesome hack by Dean Edwards\"\n\t\t// Android Browser returns percentage for some values,\n\t\t// but width seems to be reliably pixels.\n\t\t// This is against the CSSOM draft spec:\n\t\t// https://drafts.csswg.org/cssom/#resolved-values\n\t\tif ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {\n\n\t\t\t// Remember the original values\n\t\t\twidth = style.width;\n\t\t\tminWidth = style.minWidth;\n\t\t\tmaxWidth = style.maxWidth;\n\n\t\t\t// Put in the new values to get a computed value out\n\t\t\tstyle.minWidth = style.maxWidth = style.width = ret;\n\t\t\tret = computed.width;\n\n\t\t\t// Revert the changed values\n\t\t\tstyle.width = width;\n\t\t\tstyle.minWidth = minWidth;\n\t\t\tstyle.maxWidth = maxWidth;\n\t\t}\n\t}\n\n\treturn ret !== undefined ?\n\n\t\t// Support: IE <=9 - 11 only\n\t\t// IE returns zIndex value as an integer.\n\t\tret + \"\" :\n\t\tret;\n}\n\n\nfunction addGetHookIf( conditionFn, hookFn ) {\n\n\t// Define the hook, we'll check on the first run if it's really needed.\n\treturn {\n\t\tget: function() {\n\t\t\tif ( conditionFn() ) {\n\n\t\t\t\t// Hook not needed (or it's not possible to use it due\n\t\t\t\t// to missing dependency), remove it.\n\t\t\t\tdelete this.get;\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Hook needed; redefine it so that the support test is not executed again.\n\t\t\treturn ( this.get = hookFn ).apply( this, arguments );\n\t\t}\n\t};\n}\n\n\nvar cssPrefixes = [ \"Webkit\", \"Moz\", \"ms\" ],\n\temptyStyle = document.createElement( \"div\" ).style,\n\tvendorProps = {};\n\n// Return a vendor-prefixed property or undefined\nfunction vendorPropName( name ) {\n\n\t// Check for vendor prefixed names\n\tvar capName = name[ 0 ].toUpperCase() + name.slice( 1 ),\n\t\ti = cssPrefixes.length;\n\n\twhile ( i-- ) {\n\t\tname = cssPrefixes[ i ] + capName;\n\t\tif ( name in emptyStyle ) {\n\t\t\treturn name;\n\t\t}\n\t}\n}\n\n// Return a potentially-mapped jQuery.cssProps or vendor prefixed property\nfunction finalPropName( name ) {\n\tvar final = jQuery.cssProps[ name ] || vendorProps[ name ];\n\n\tif ( final ) {\n\t\treturn final;\n\t}\n\tif ( name in emptyStyle ) {\n\t\treturn name;\n\t}\n\treturn vendorProps[ name ] = vendorPropName( name ) || name;\n}\n\n\nvar\n\n\t// Swappable if display is none or starts with table\n\t// except \"table\", \"table-cell\", or \"table-caption\"\n\t// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n\trdisplayswap = /^(none|table(?!-c[ea]).+)/,\n\tcssShow = { position: \"absolute\", visibility: \"hidden\", display: \"block\" },\n\tcssNormalTransform = {\n\t\tletterSpacing: \"0\",\n\t\tfontWeight: \"400\"\n\t};\n\nfunction setPositiveNumber( _elem, value, subtract ) {\n\n\t// Any relative (+/-) values have already been\n\t// normalized at this point\n\tvar matches = rcssNum.exec( value );\n\treturn matches ?\n\n\t\t// Guard against undefined \"subtract\", e.g., when used as in cssHooks\n\t\tMath.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || \"px\" ) :\n\t\tvalue;\n}\n\nfunction boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {\n\tvar i = dimension === \"width\" ? 1 : 0,\n\t\textra = 0,\n\t\tdelta = 0,\n\t\tmarginDelta = 0;\n\n\t// Adjustment may not be necessary\n\tif ( box === ( isBorderBox ? \"border\" : \"content\" ) ) {\n\t\treturn 0;\n\t}\n\n\tfor ( ; i < 4; i += 2 ) {\n\n\t\t// Both box models exclude margin\n\t\t// Count margin delta separately to only add it after scroll gutter adjustment.\n\t\t// This is needed to make negative margins work with `outerHeight( true )` (gh-3982).\n\t\tif ( box === \"margin\" ) {\n\t\t\tmarginDelta += jQuery.css( elem, box + cssExpand[ i ], true, styles );\n\t\t}\n\n\t\t// If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n\t\tif ( !isBorderBox ) {\n\n\t\t\t// Add padding\n\t\t\tdelta += jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\n\t\t\t// For \"border\" or \"margin\", add border\n\t\t\tif ( box !== \"padding\" ) {\n\t\t\t\tdelta += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\n\t\t\t// But still keep track of it otherwise\n\t\t\t} else {\n\t\t\t\textra += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\n\t\t// If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n\t\t// \"padding\" or \"margin\"\n\t\t} else {\n\n\t\t\t// For \"content\", subtract padding\n\t\t\tif ( box === \"content\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\t\t\t}\n\n\t\t\t// For \"content\" or \"padding\", subtract border\n\t\t\tif ( box !== \"margin\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Account for positive content-box scroll gutter when requested by providing computedVal\n\tif ( !isBorderBox && computedVal >= 0 ) {\n\n\t\t// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n\t\t// Assuming integer scroll gutter, subtract the rest and round down\n\t\tdelta += Math.max( 0, Math.ceil(\n\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\tcomputedVal -\n\t\t\tdelta -\n\t\t\textra -\n\t\t\t0.5\n\n\t\t// If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter\n\t\t// Use an explicit zero to avoid NaN (gh-3964)\n\t\t) ) || 0;\n\t}\n\n\treturn delta + marginDelta;\n}\n\nfunction getWidthOrHeight( elem, dimension, extra ) {\n\n\t// Start with computed style\n\tvar styles = getStyles( elem ),\n\n\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).\n\t\t// Fake content-box until we know it's needed to know the true value.\n\t\tboxSizingNeeded = !support.boxSizingReliable() || extra,\n\t\tisBorderBox = boxSizingNeeded &&\n\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\tvalueIsBorderBox = isBorderBox,\n\n\t\tval = curCSS( elem, dimension, styles ),\n\t\toffsetProp = \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 );\n\n\t// Support: Firefox <=54\n\t// Return a confounding non-pixel value or feign ignorance, as appropriate.\n\tif ( rnumnonpx.test( val ) ) {\n\t\tif ( !extra ) {\n\t\t\treturn val;\n\t\t}\n\t\tval = \"auto\";\n\t}\n\n\n\t// Support: IE 9 - 11 only\n\t// Use offsetWidth/offsetHeight for when box sizing is unreliable.\n\t// In those cases, the computed value can be trusted to be border-box.\n\tif ( ( !support.boxSizingReliable() && isBorderBox ||\n\n\t\t// Support: IE 10 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Interestingly, in some cases IE 9 doesn't suffer from this issue.\n\t\t!support.reliableTrDimensions() && nodeName( elem, \"tr\" ) ||\n\n\t\t// Fall back to offsetWidth/offsetHeight when value is \"auto\"\n\t\t// This happens for inline elements with no explicit setting (gh-3571)\n\t\tval === \"auto\" ||\n\n\t\t// Support: Android <=4.1 - 4.3 only\n\t\t// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n\t\t!parseFloat( val ) && jQuery.css( elem, \"display\", false, styles ) === \"inline\" ) &&\n\n\t\t// Make sure the element is visible & connected\n\t\telem.getClientRects().length ) {\n\n\t\tisBorderBox = jQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\";\n\n\t\t// Where available, offsetWidth/offsetHeight approximate border box dimensions.\n\t\t// Where not available (e.g., SVG), assume unreliable box-sizing and interpret the\n\t\t// retrieved value as a content box dimension.\n\t\tvalueIsBorderBox = offsetProp in elem;\n\t\tif ( valueIsBorderBox ) {\n\t\t\tval = elem[ offsetProp ];\n\t\t}\n\t}\n\n\t// Normalize \"\" and auto\n\tval = parseFloat( val ) || 0;\n\n\t// Adjust for the element's box model\n\treturn ( val +\n\t\tboxModelAdjustment(\n\t\t\telem,\n\t\t\tdimension,\n\t\t\textra || ( isBorderBox ? \"border\" : \"content\" ),\n\t\t\tvalueIsBorderBox,\n\t\t\tstyles,\n\n\t\t\t// Provide the current computed size to request scroll gutter calculation (gh-3589)\n\t\t\tval\n\t\t)\n\t) + \"px\";\n}\n\njQuery.extend( {\n\n\t// Add in style property hooks for overriding the default\n\t// behavior of getting and setting a style property\n\tcssHooks: {\n\t\topacity: {\n\t\t\tget: function( elem, computed ) {\n\t\t\t\tif ( computed ) {\n\n\t\t\t\t\t// We should always get a number back from opacity\n\t\t\t\t\tvar ret = curCSS( elem, \"opacity\" );\n\t\t\t\t\treturn ret === \"\" ? \"1\" : ret;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\t// Don't automatically add \"px\" to these possibly-unitless properties\n\tcssNumber: {\n\t\tanimationIterationCount: true,\n\t\taspectRatio: true,\n\t\tborderImageSlice: true,\n\t\tcolumnCount: true,\n\t\tflexGrow: true,\n\t\tflexShrink: true,\n\t\tfontWeight: true,\n\t\tgridArea: true,\n\t\tgridColumn: true,\n\t\tgridColumnEnd: true,\n\t\tgridColumnStart: true,\n\t\tgridRow: true,\n\t\tgridRowEnd: true,\n\t\tgridRowStart: true,\n\t\tlineHeight: true,\n\t\topacity: true,\n\t\torder: true,\n\t\torphans: true,\n\t\tscale: true,\n\t\twidows: true,\n\t\tzIndex: true,\n\t\tzoom: true,\n\n\t\t// SVG-related\n\t\tfillOpacity: true,\n\t\tfloodOpacity: true,\n\t\tstopOpacity: true,\n\t\tstrokeMiterlimit: true,\n\t\tstrokeOpacity: true\n\t},\n\n\t// Add in properties whose names you wish to fix before\n\t// setting or getting the value\n\tcssProps: {},\n\n\t// Get and set the style property on a DOM Node\n\tstyle: function( elem, name, value, extra ) {\n\n\t\t// Don't set styles on text and comment nodes\n\t\tif ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Make sure that we're working with the right name\n\t\tvar ret, type, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name ),\n\t\t\tstyle = elem.style;\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to query the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Gets hook for the prefixed version, then unprefixed version\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// Check if we're setting a value\n\t\tif ( value !== undefined ) {\n\t\t\ttype = typeof value;\n\n\t\t\t// Convert \"+=\" or \"-=\" to relative numbers (trac-7345)\n\t\t\tif ( type === \"string\" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {\n\t\t\t\tvalue = adjustCSS( elem, name, ret );\n\n\t\t\t\t// Fixes bug trac-9237\n\t\t\t\ttype = \"number\";\n\t\t\t}\n\n\t\t\t// Make sure that null and NaN values aren't set (trac-7116)\n\t\t\tif ( value == null || value !== value ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// If a number was passed in, add the unit (except for certain CSS properties)\n\t\t\t// The isCustomProp check can be removed in jQuery 4.0 when we only auto-append\n\t\t\t// \"px\" to a few hardcoded values.\n\t\t\tif ( type === \"number\" && !isCustomProp ) {\n\t\t\t\tvalue += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? \"\" : \"px\" );\n\t\t\t}\n\n\t\t\t// background-* props affect original clone's values\n\t\t\tif ( !support.clearCloneStyle && value === \"\" && name.indexOf( \"background\" ) === 0 ) {\n\t\t\t\tstyle[ name ] = \"inherit\";\n\t\t\t}\n\n\t\t\t// If a hook was provided, use that value, otherwise just set the specified value\n\t\t\tif ( !hooks || !( \"set\" in hooks ) ||\n\t\t\t\t( value = hooks.set( elem, value, extra ) ) !== undefined ) {\n\n\t\t\t\tif ( isCustomProp ) {\n\t\t\t\t\tstyle.setProperty( name, value );\n\t\t\t\t} else {\n\t\t\t\t\tstyle[ name ] = value;\n\t\t\t\t}\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// If a hook was provided get the non-computed value from there\n\t\t\tif ( hooks && \"get\" in hooks &&\n\t\t\t\t( ret = hooks.get( elem, false, extra ) ) !== undefined ) {\n\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\t// Otherwise just get the value from the style object\n\t\t\treturn style[ name ];\n\t\t}\n\t},\n\n\tcss: function( elem, name, extra, styles ) {\n\t\tvar val, num, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name );\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to modify the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Try prefixed name followed by the unprefixed name\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// If a hook was provided get the computed value from there\n\t\tif ( hooks && \"get\" in hooks ) {\n\t\t\tval = hooks.get( elem, true, extra );\n\t\t}\n\n\t\t// Otherwise, if a way to get the computed value exists, use that\n\t\tif ( val === undefined ) {\n\t\t\tval = curCSS( elem, name, styles );\n\t\t}\n\n\t\t// Convert \"normal\" to computed value\n\t\tif ( val === \"normal\" && name in cssNormalTransform ) {\n\t\t\tval = cssNormalTransform[ name ];\n\t\t}\n\n\t\t// Make numeric if forced or a qualifier was provided and val looks numeric\n\t\tif ( extra === \"\" || extra ) {\n\t\t\tnum = parseFloat( val );\n\t\t\treturn extra === true || isFinite( num ) ? num || 0 : val;\n\t\t}\n\n\t\treturn val;\n\t}\n} );\n\njQuery.each( [ \"height\", \"width\" ], function( _i, dimension ) {\n\tjQuery.cssHooks[ dimension ] = {\n\t\tget: function( elem, computed, extra ) {\n\t\t\tif ( computed ) {\n\n\t\t\t\t// Certain elements can have dimension info if we invisibly show them\n\t\t\t\t// but it must have a current display style that would benefit\n\t\t\t\treturn rdisplayswap.test( jQuery.css( elem, \"display\" ) ) &&\n\n\t\t\t\t\t// Support: Safari 8+\n\t\t\t\t\t// Table columns in Safari have non-zero offsetWidth & zero\n\t\t\t\t\t// getBoundingClientRect().width unless display is changed.\n\t\t\t\t\t// Support: IE <=11 only\n\t\t\t\t\t// Running getBoundingClientRect on a disconnected node\n\t\t\t\t\t// in IE throws an error.\n\t\t\t\t\t( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?\n\t\t\t\t\tswap( elem, cssShow, function() {\n\t\t\t\t\t\treturn getWidthOrHeight( elem, dimension, extra );\n\t\t\t\t\t} ) :\n\t\t\t\t\tgetWidthOrHeight( elem, dimension, extra );\n\t\t\t}\n\t\t},\n\n\t\tset: function( elem, value, extra ) {\n\t\t\tvar matches,\n\t\t\t\tstyles = getStyles( elem ),\n\n\t\t\t\t// Only read styles.position if the test has a chance to fail\n\t\t\t\t// to avoid forcing a reflow.\n\t\t\t\tscrollboxSizeBuggy = !support.scrollboxSize() &&\n\t\t\t\t\tstyles.position === \"absolute\",\n\n\t\t\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)\n\t\t\t\tboxSizingNeeded = scrollboxSizeBuggy || extra,\n\t\t\t\tisBorderBox = boxSizingNeeded &&\n\t\t\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\t\t\tsubtract = extra ?\n\t\t\t\t\tboxModelAdjustment(\n\t\t\t\t\t\telem,\n\t\t\t\t\t\tdimension,\n\t\t\t\t\t\textra,\n\t\t\t\t\t\tisBorderBox,\n\t\t\t\t\t\tstyles\n\t\t\t\t\t) :\n\t\t\t\t\t0;\n\n\t\t\t// Account for unreliable border-box dimensions by comparing offset* to computed and\n\t\t\t// faking a content-box to get border and padding (gh-3699)\n\t\t\tif ( isBorderBox && scrollboxSizeBuggy ) {\n\t\t\t\tsubtract -= Math.ceil(\n\t\t\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\t\t\tparseFloat( styles[ dimension ] ) -\n\t\t\t\t\tboxModelAdjustment( elem, dimension, \"border\", false, styles ) -\n\t\t\t\t\t0.5\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// Convert to pixels if value adjustment is needed\n\t\t\tif ( subtract && ( matches = rcssNum.exec( value ) ) &&\n\t\t\t\t( matches[ 3 ] || \"px\" ) !== \"px\" ) {\n\n\t\t\t\telem.style[ dimension ] = value;\n\t\t\t\tvalue = jQuery.css( elem, dimension );\n\t\t\t}\n\n\t\t\treturn setPositiveNumber( elem, value, subtract );\n\t\t}\n\t};\n} );\n\njQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,\n\tfunction( elem, computed ) {\n\t\tif ( computed ) {\n\t\t\treturn ( parseFloat( curCSS( elem, \"marginLeft\" ) ) ||\n\t\t\t\telem.getBoundingClientRect().left -\n\t\t\t\t\tswap( elem, { marginLeft: 0 }, function() {\n\t\t\t\t\t\treturn elem.getBoundingClientRect().left;\n\t\t\t\t\t} )\n\t\t\t) + \"px\";\n\t\t}\n\t}\n);\n\n// These hooks are used by animate to expand properties\njQuery.each( {\n\tmargin: \"\",\n\tpadding: \"\",\n\tborder: \"Width\"\n}, function( prefix, suffix ) {\n\tjQuery.cssHooks[ prefix + suffix ] = {\n\t\texpand: function( value ) {\n\t\t\tvar i = 0,\n\t\t\t\texpanded = {},\n\n\t\t\t\t// Assumes a single number if not a string\n\t\t\t\tparts = typeof value === \"string\" ? value.split( \" \" ) : [ value ];\n\n\t\t\tfor ( ; i < 4; i++ ) {\n\t\t\t\texpanded[ prefix + cssExpand[ i ] + suffix ] =\n\t\t\t\t\tparts[ i ] || parts[ i - 2 ] || parts[ 0 ];\n\t\t\t}\n\n\t\t\treturn expanded;\n\t\t}\n\t};\n\n\tif ( prefix !== \"margin\" ) {\n\t\tjQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;\n\t}\n} );\n\njQuery.fn.extend( {\n\tcss: function( name, value ) {\n\t\treturn access( this, function( elem, name, value ) {\n\t\t\tvar styles, len,\n\t\t\t\tmap = {},\n\t\t\t\ti = 0;\n\n\t\t\tif ( Array.isArray( name ) ) {\n\t\t\t\tstyles = getStyles( elem );\n\t\t\t\tlen = name.length;\n\n\t\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\t\tmap[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );\n\t\t\t\t}\n\n\t\t\t\treturn map;\n\t\t\t}\n\n\t\t\treturn value !== undefined ?\n\t\t\t\tjQuery.style( elem, name, value ) :\n\t\t\t\tjQuery.css( elem, name );\n\t\t}, name, value, arguments.length > 1 );\n\t}\n} );\n\n\nfunction Tween( elem, options, prop, end, easing ) {\n\treturn new Tween.prototype.init( elem, options, prop, end, easing );\n}\njQuery.Tween = Tween;\n\nTween.prototype = {\n\tconstructor: Tween,\n\tinit: function( elem, options, prop, end, easing, unit ) {\n\t\tthis.elem = elem;\n\t\tthis.prop = prop;\n\t\tthis.easing = easing || jQuery.easing._default;\n\t\tthis.options = options;\n\t\tthis.start = this.now = this.cur();\n\t\tthis.end = end;\n\t\tthis.unit = unit || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" );\n\t},\n\tcur: function() {\n\t\tvar hooks = Tween.propHooks[ this.prop ];\n\n\t\treturn hooks && hooks.get ?\n\t\t\thooks.get( this ) :\n\t\t\tTween.propHooks._default.get( this );\n\t},\n\trun: function( percent ) {\n\t\tvar eased,\n\t\t\thooks = Tween.propHooks[ this.prop ];\n\n\t\tif ( this.options.duration ) {\n\t\t\tthis.pos = eased = jQuery.easing[ this.easing ](\n\t\t\t\tpercent, this.options.duration * percent, 0, 1, this.options.duration\n\t\t\t);\n\t\t} else {\n\t\t\tthis.pos = eased = percent;\n\t\t}\n\t\tthis.now = ( this.end - this.start ) * eased + this.start;\n\n\t\tif ( this.options.step ) {\n\t\t\tthis.options.step.call( this.elem, this.now, this );\n\t\t}\n\n\t\tif ( hooks && hooks.set ) {\n\t\t\thooks.set( this );\n\t\t} else {\n\t\t\tTween.propHooks._default.set( this );\n\t\t}\n\t\treturn this;\n\t}\n};\n\nTween.prototype.init.prototype = Tween.prototype;\n\nTween.propHooks = {\n\t_default: {\n\t\tget: function( tween ) {\n\t\t\tvar result;\n\n\t\t\t// Use a property on the element directly when it is not a DOM element,\n\t\t\t// or when there is no matching style property that exists.\n\t\t\tif ( tween.elem.nodeType !== 1 ||\n\t\t\t\ttween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {\n\t\t\t\treturn tween.elem[ tween.prop ];\n\t\t\t}\n\n\t\t\t// Passing an empty string as a 3rd parameter to .css will automatically\n\t\t\t// attempt a parseFloat and fallback to a string if the parse fails.\n\t\t\t// Simple values such as \"10px\" are parsed to Float;\n\t\t\t// complex values such as \"rotate(1rad)\" are returned as-is.\n\t\t\tresult = jQuery.css( tween.elem, tween.prop, \"\" );\n\n\t\t\t// Empty strings, null, undefined and \"auto\" are converted to 0.\n\t\t\treturn !result || result === \"auto\" ? 0 : result;\n\t\t},\n\t\tset: function( tween ) {\n\n\t\t\t// Use step hook for back compat.\n\t\t\t// Use cssHook if its there.\n\t\t\t// Use .style if available and use plain properties where available.\n\t\t\tif ( jQuery.fx.step[ tween.prop ] ) {\n\t\t\t\tjQuery.fx.step[ tween.prop ]( tween );\n\t\t\t} else if ( tween.elem.nodeType === 1 && (\n\t\t\t\tjQuery.cssHooks[ tween.prop ] ||\n\t\t\t\t\ttween.elem.style[ finalPropName( tween.prop ) ] != null ) ) {\n\t\t\t\tjQuery.style( tween.elem, tween.prop, tween.now + tween.unit );\n\t\t\t} else {\n\t\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Support: IE <=9 only\n// Panic based approach to setting things on disconnected nodes\nTween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {\n\tset: function( tween ) {\n\t\tif ( tween.elem.nodeType && tween.elem.parentNode ) {\n\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t}\n\t}\n};\n\njQuery.easing = {\n\tlinear: function( p ) {\n\t\treturn p;\n\t},\n\tswing: function( p ) {\n\t\treturn 0.5 - Math.cos( p * Math.PI ) / 2;\n\t},\n\t_default: \"swing\"\n};\n\njQuery.fx = Tween.prototype.init;\n\n// Back compat <1.8 extension point\njQuery.fx.step = {};\n\n\n\n\nvar\n\tfxNow, inProgress,\n\trfxtypes = /^(?:toggle|show|hide)$/,\n\trrun = /queueHooks$/;\n\nfunction schedule() {\n\tif ( inProgress ) {\n\t\tif ( document.hidden === false && window.requestAnimationFrame ) {\n\t\t\twindow.requestAnimationFrame( schedule );\n\t\t} else {\n\t\t\twindow.setTimeout( schedule, jQuery.fx.interval );\n\t\t}\n\n\t\tjQuery.fx.tick();\n\t}\n}\n\n// Animations created synchronously will run synchronously\nfunction createFxNow() {\n\twindow.setTimeout( function() {\n\t\tfxNow = undefined;\n\t} );\n\treturn ( fxNow = Date.now() );\n}\n\n// Generate parameters to create a standard animation\nfunction genFx( type, includeWidth ) {\n\tvar which,\n\t\ti = 0,\n\t\tattrs = { height: type };\n\n\t// If we include width, step value is 1 to do all cssExpand values,\n\t// otherwise step value is 2 to skip over Left and Right\n\tincludeWidth = includeWidth ? 1 : 0;\n\tfor ( ; i < 4; i += 2 - includeWidth ) {\n\t\twhich = cssExpand[ i ];\n\t\tattrs[ \"margin\" + which ] = attrs[ \"padding\" + which ] = type;\n\t}\n\n\tif ( includeWidth ) {\n\t\tattrs.opacity = attrs.width = type;\n\t}\n\n\treturn attrs;\n}\n\nfunction createTween( value, prop, animation ) {\n\tvar tween,\n\t\tcollection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ \"*\" ] ),\n\t\tindex = 0,\n\t\tlength = collection.length;\n\tfor ( ; index < length; index++ ) {\n\t\tif ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {\n\n\t\t\t// We're done with this property\n\t\t\treturn tween;\n\t\t}\n\t}\n}\n\nfunction defaultPrefilter( elem, props, opts ) {\n\tvar prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,\n\t\tisBox = \"width\" in props || \"height\" in props,\n\t\tanim = this,\n\t\torig = {},\n\t\tstyle = elem.style,\n\t\thidden = elem.nodeType && isHiddenWithinTree( elem ),\n\t\tdataShow = dataPriv.get( elem, \"fxshow\" );\n\n\t// Queue-skipping animations hijack the fx hooks\n\tif ( !opts.queue ) {\n\t\thooks = jQuery._queueHooks( elem, \"fx\" );\n\t\tif ( hooks.unqueued == null ) {\n\t\t\thooks.unqueued = 0;\n\t\t\toldfire = hooks.empty.fire;\n\t\t\thooks.empty.fire = function() {\n\t\t\t\tif ( !hooks.unqueued ) {\n\t\t\t\t\toldfire();\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\t\thooks.unqueued++;\n\n\t\tanim.always( function() {\n\n\t\t\t// Ensure the complete handler is called before this completes\n\t\t\tanim.always( function() {\n\t\t\t\thooks.unqueued--;\n\t\t\t\tif ( !jQuery.queue( elem, \"fx\" ).length ) {\n\t\t\t\t\thooks.empty.fire();\n\t\t\t\t}\n\t\t\t} );\n\t\t} );\n\t}\n\n\t// Detect show/hide animations\n\tfor ( prop in props ) {\n\t\tvalue = props[ prop ];\n\t\tif ( rfxtypes.test( value ) ) {\n\t\t\tdelete props[ prop ];\n\t\t\ttoggle = toggle || value === \"toggle\";\n\t\t\tif ( value === ( hidden ? \"hide\" : \"show\" ) ) {\n\n\t\t\t\t// Pretend to be hidden if this is a \"show\" and\n\t\t\t\t// there is still data from a stopped show/hide\n\t\t\t\tif ( value === \"show\" && dataShow && dataShow[ prop ] !== undefined ) {\n\t\t\t\t\thidden = true;\n\n\t\t\t\t// Ignore all other no-op show/hide data\n\t\t\t\t} else {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\t\t\t}\n\t\t\torig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );\n\t\t}\n\t}\n\n\t// Bail out if this is a no-op like .hide().hide()\n\tpropTween = !jQuery.isEmptyObject( props );\n\tif ( !propTween && jQuery.isEmptyObject( orig ) ) {\n\t\treturn;\n\t}\n\n\t// Restrict \"overflow\" and \"display\" styles during box animations\n\tif ( isBox && elem.nodeType === 1 ) {\n\n\t\t// Support: IE <=9 - 11, Edge 12 - 15\n\t\t// Record all 3 overflow attributes because IE does not infer the shorthand\n\t\t// from identically-valued overflowX and overflowY and Edge just mirrors\n\t\t// the overflowX value there.\n\t\topts.overflow = [ style.overflow, style.overflowX, style.overflowY ];\n\n\t\t// Identify a display type, preferring old show/hide data over the CSS cascade\n\t\trestoreDisplay = dataShow && dataShow.display;\n\t\tif ( restoreDisplay == null ) {\n\t\t\trestoreDisplay = dataPriv.get( elem, \"display\" );\n\t\t}\n\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\tif ( display === \"none\" ) {\n\t\t\tif ( restoreDisplay ) {\n\t\t\t\tdisplay = restoreDisplay;\n\t\t\t} else {\n\n\t\t\t\t// Get nonempty value(s) by temporarily forcing visibility\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t\trestoreDisplay = elem.style.display || restoreDisplay;\n\t\t\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\t\t\tshowHide( [ elem ] );\n\t\t\t}\n\t\t}\n\n\t\t// Animate inline elements as inline-block\n\t\tif ( display === \"inline\" || display === \"inline-block\" && restoreDisplay != null ) {\n\t\t\tif ( jQuery.css( elem, \"float\" ) === \"none\" ) {\n\n\t\t\t\t// Restore the original display value at the end of pure show/hide animations\n\t\t\t\tif ( !propTween ) {\n\t\t\t\t\tanim.done( function() {\n\t\t\t\t\t\tstyle.display = restoreDisplay;\n\t\t\t\t\t} );\n\t\t\t\t\tif ( restoreDisplay == null ) {\n\t\t\t\t\t\tdisplay = style.display;\n\t\t\t\t\t\trestoreDisplay = display === \"none\" ? \"\" : display;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tstyle.display = \"inline-block\";\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( opts.overflow ) {\n\t\tstyle.overflow = \"hidden\";\n\t\tanim.always( function() {\n\t\t\tstyle.overflow = opts.overflow[ 0 ];\n\t\t\tstyle.overflowX = opts.overflow[ 1 ];\n\t\t\tstyle.overflowY = opts.overflow[ 2 ];\n\t\t} );\n\t}\n\n\t// Implement show/hide animations\n\tpropTween = false;\n\tfor ( prop in orig ) {\n\n\t\t// General show/hide setup for this element animation\n\t\tif ( !propTween ) {\n\t\t\tif ( dataShow ) {\n\t\t\t\tif ( \"hidden\" in dataShow ) {\n\t\t\t\t\thidden = dataShow.hidden;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tdataShow = dataPriv.access( elem, \"fxshow\", { display: restoreDisplay } );\n\t\t\t}\n\n\t\t\t// Store hidden/visible for toggle so `.stop().toggle()` \"reverses\"\n\t\t\tif ( toggle ) {\n\t\t\t\tdataShow.hidden = !hidden;\n\t\t\t}\n\n\t\t\t// Show elements before animating them\n\t\t\tif ( hidden ) {\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t}\n\n\t\t\t/* eslint-disable no-loop-func */\n\n\t\t\tanim.done( function() {\n\n\t\t\t\t/* eslint-enable no-loop-func */\n\n\t\t\t\t// The final step of a \"hide\" animation is actually hiding the element\n\t\t\t\tif ( !hidden ) {\n\t\t\t\t\tshowHide( [ elem ] );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( elem, \"fxshow\" );\n\t\t\t\tfor ( prop in orig ) {\n\t\t\t\t\tjQuery.style( elem, prop, orig[ prop ] );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\t// Per-property setup\n\t\tpropTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );\n\t\tif ( !( prop in dataShow ) ) {\n\t\t\tdataShow[ prop ] = propTween.start;\n\t\t\tif ( hidden ) {\n\t\t\t\tpropTween.end = propTween.start;\n\t\t\t\tpropTween.start = 0;\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction propFilter( props, specialEasing ) {\n\tvar index, name, easing, value, hooks;\n\n\t// camelCase, specialEasing and expand cssHook pass\n\tfor ( index in props ) {\n\t\tname = camelCase( index );\n\t\teasing = specialEasing[ name ];\n\t\tvalue = props[ index ];\n\t\tif ( Array.isArray( value ) ) {\n\t\t\teasing = value[ 1 ];\n\t\t\tvalue = props[ index ] = value[ 0 ];\n\t\t}\n\n\t\tif ( index !== name ) {\n\t\t\tprops[ name ] = value;\n\t\t\tdelete props[ index ];\n\t\t}\n\n\t\thooks = jQuery.cssHooks[ name ];\n\t\tif ( hooks && \"expand\" in hooks ) {\n\t\t\tvalue = hooks.expand( value );\n\t\t\tdelete props[ name ];\n\n\t\t\t// Not quite $.extend, this won't overwrite existing keys.\n\t\t\t// Reusing 'index' because we have the correct \"name\"\n\t\t\tfor ( index in value ) {\n\t\t\t\tif ( !( index in props ) ) {\n\t\t\t\t\tprops[ index ] = value[ index ];\n\t\t\t\t\tspecialEasing[ index ] = easing;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tspecialEasing[ name ] = easing;\n\t\t}\n\t}\n}\n\nfunction Animation( elem, properties, options ) {\n\tvar result,\n\t\tstopped,\n\t\tindex = 0,\n\t\tlength = Animation.prefilters.length,\n\t\tdeferred = jQuery.Deferred().always( function() {\n\n\t\t\t// Don't match elem in the :animated selector\n\t\t\tdelete tick.elem;\n\t\t} ),\n\t\ttick = function() {\n\t\t\tif ( stopped ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t\tvar currentTime = fxNow || createFxNow(),\n\t\t\t\tremaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),\n\n\t\t\t\t// Support: Android 2.3 only\n\t\t\t\t// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (trac-12497)\n\t\t\t\ttemp = remaining / animation.duration || 0,\n\t\t\t\tpercent = 1 - temp,\n\t\t\t\tindex = 0,\n\t\t\t\tlength = animation.tweens.length;\n\n\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\tanimation.tweens[ index ].run( percent );\n\t\t\t}\n\n\t\t\tdeferred.notifyWith( elem, [ animation, percent, remaining ] );\n\n\t\t\t// If there's more to do, yield\n\t\t\tif ( percent < 1 && length ) {\n\t\t\t\treturn remaining;\n\t\t\t}\n\n\t\t\t// If this was an empty animation, synthesize a final progress notification\n\t\t\tif ( !length ) {\n\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t}\n\n\t\t\t// Resolve the animation and report its conclusion\n\t\t\tdeferred.resolveWith( elem, [ animation ] );\n\t\t\treturn false;\n\t\t},\n\t\tanimation = deferred.promise( {\n\t\t\telem: elem,\n\t\t\tprops: jQuery.extend( {}, properties ),\n\t\t\topts: jQuery.extend( true, {\n\t\t\t\tspecialEasing: {},\n\t\t\t\teasing: jQuery.easing._default\n\t\t\t}, options ),\n\t\t\toriginalProperties: properties,\n\t\t\toriginalOptions: options,\n\t\t\tstartTime: fxNow || createFxNow(),\n\t\t\tduration: options.duration,\n\t\t\ttweens: [],\n\t\t\tcreateTween: function( prop, end ) {\n\t\t\t\tvar tween = jQuery.Tween( elem, animation.opts, prop, end,\n\t\t\t\t\tanimation.opts.specialEasing[ prop ] || animation.opts.easing );\n\t\t\t\tanimation.tweens.push( tween );\n\t\t\t\treturn tween;\n\t\t\t},\n\t\t\tstop: function( gotoEnd ) {\n\t\t\t\tvar index = 0,\n\n\t\t\t\t\t// If we are going to the end, we want to run all the tweens\n\t\t\t\t\t// otherwise we skip this part\n\t\t\t\t\tlength = gotoEnd ? animation.tweens.length : 0;\n\t\t\t\tif ( stopped ) {\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t\tstopped = true;\n\t\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\t\tanimation.tweens[ index ].run( 1 );\n\t\t\t\t}\n\n\t\t\t\t// Resolve when we played the last frame; otherwise, reject\n\t\t\t\tif ( gotoEnd ) {\n\t\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t\t\tdeferred.resolveWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t} else {\n\t\t\t\t\tdeferred.rejectWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t}\n\t\t} ),\n\t\tprops = animation.props;\n\n\tpropFilter( props, animation.opts.specialEasing );\n\n\tfor ( ; index < length; index++ ) {\n\t\tresult = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );\n\t\tif ( result ) {\n\t\t\tif ( isFunction( result.stop ) ) {\n\t\t\t\tjQuery._queueHooks( animation.elem, animation.opts.queue ).stop =\n\t\t\t\t\tresult.stop.bind( result );\n\t\t\t}\n\t\t\treturn result;\n\t\t}\n\t}\n\n\tjQuery.map( props, createTween, animation );\n\n\tif ( isFunction( animation.opts.start ) ) {\n\t\tanimation.opts.start.call( elem, animation );\n\t}\n\n\t// Attach callbacks from options\n\tanimation\n\t\t.progress( animation.opts.progress )\n\t\t.done( animation.opts.done, animation.opts.complete )\n\t\t.fail( animation.opts.fail )\n\t\t.always( animation.opts.always );\n\n\tjQuery.fx.timer(\n\t\tjQuery.extend( tick, {\n\t\t\telem: elem,\n\t\t\tanim: animation,\n\t\t\tqueue: animation.opts.queue\n\t\t} )\n\t);\n\n\treturn animation;\n}\n\njQuery.Animation = jQuery.extend( Animation, {\n\n\ttweeners: {\n\t\t\"*\": [ function( prop, value ) {\n\t\t\tvar tween = this.createTween( prop, value );\n\t\t\tadjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );\n\t\t\treturn tween;\n\t\t} ]\n\t},\n\n\ttweener: function( props, callback ) {\n\t\tif ( isFunction( props ) ) {\n\t\t\tcallback = props;\n\t\t\tprops = [ \"*\" ];\n\t\t} else {\n\t\t\tprops = props.match( rnothtmlwhite );\n\t\t}\n\n\t\tvar prop,\n\t\t\tindex = 0,\n\t\t\tlength = props.length;\n\n\t\tfor ( ; index < length; index++ ) {\n\t\t\tprop = props[ index ];\n\t\t\tAnimation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];\n\t\t\tAnimation.tweeners[ prop ].unshift( callback );\n\t\t}\n\t},\n\n\tprefilters: [ defaultPrefilter ],\n\n\tprefilter: function( callback, prepend ) {\n\t\tif ( prepend ) {\n\t\t\tAnimation.prefilters.unshift( callback );\n\t\t} else {\n\t\t\tAnimation.prefilters.push( callback );\n\t\t}\n\t}\n} );\n\njQuery.speed = function( speed, easing, fn ) {\n\tvar opt = speed && typeof speed === \"object\" ? jQuery.extend( {}, speed ) : {\n\t\tcomplete: fn || !fn && easing ||\n\t\t\tisFunction( speed ) && speed,\n\t\tduration: speed,\n\t\teasing: fn && easing || easing && !isFunction( easing ) && easing\n\t};\n\n\t// Go to the end state if fx are off\n\tif ( jQuery.fx.off ) {\n\t\topt.duration = 0;\n\n\t} else {\n\t\tif ( typeof opt.duration !== \"number\" ) {\n\t\t\tif ( opt.duration in jQuery.fx.speeds ) {\n\t\t\t\topt.duration = jQuery.fx.speeds[ opt.duration ];\n\n\t\t\t} else {\n\t\t\t\topt.duration = jQuery.fx.speeds._default;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Normalize opt.queue - true/undefined/null -> \"fx\"\n\tif ( opt.queue == null || opt.queue === true ) {\n\t\topt.queue = \"fx\";\n\t}\n\n\t// Queueing\n\topt.old = opt.complete;\n\n\topt.complete = function() {\n\t\tif ( isFunction( opt.old ) ) {\n\t\t\topt.old.call( this );\n\t\t}\n\n\t\tif ( opt.queue ) {\n\t\t\tjQuery.dequeue( this, opt.queue );\n\t\t}\n\t};\n\n\treturn opt;\n};\n\njQuery.fn.extend( {\n\tfadeTo: function( speed, to, easing, callback ) {\n\n\t\t// Show any hidden elements after setting opacity to 0\n\t\treturn this.filter( isHiddenWithinTree ).css( \"opacity\", 0 ).show()\n\n\t\t\t// Animate to the value specified\n\t\t\t.end().animate( { opacity: to }, speed, easing, callback );\n\t},\n\tanimate: function( prop, speed, easing, callback ) {\n\t\tvar empty = jQuery.isEmptyObject( prop ),\n\t\t\toptall = jQuery.speed( speed, easing, callback ),\n\t\t\tdoAnimation = function() {\n\n\t\t\t\t// Operate on a copy of prop so per-property easing won't be lost\n\t\t\t\tvar anim = Animation( this, jQuery.extend( {}, prop ), optall );\n\n\t\t\t\t// Empty animations, or finishing resolves immediately\n\t\t\t\tif ( empty || dataPriv.get( this, \"finish\" ) ) {\n\t\t\t\t\tanim.stop( true );\n\t\t\t\t}\n\t\t\t};\n\n\t\tdoAnimation.finish = doAnimation;\n\n\t\treturn empty || optall.queue === false ?\n\t\t\tthis.each( doAnimation ) :\n\t\t\tthis.queue( optall.queue, doAnimation );\n\t},\n\tstop: function( type, clearQueue, gotoEnd ) {\n\t\tvar stopQueue = function( hooks ) {\n\t\t\tvar stop = hooks.stop;\n\t\t\tdelete hooks.stop;\n\t\t\tstop( gotoEnd );\n\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tgotoEnd = clearQueue;\n\t\t\tclearQueue = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\tif ( clearQueue ) {\n\t\t\tthis.queue( type || \"fx\", [] );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar dequeue = true,\n\t\t\t\tindex = type != null && type + \"queueHooks\",\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tdata = dataPriv.get( this );\n\n\t\t\tif ( index ) {\n\t\t\t\tif ( data[ index ] && data[ index ].stop ) {\n\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tfor ( index in data ) {\n\t\t\t\t\tif ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {\n\t\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this &&\n\t\t\t\t\t( type == null || timers[ index ].queue === type ) ) {\n\n\t\t\t\t\ttimers[ index ].anim.stop( gotoEnd );\n\t\t\t\t\tdequeue = false;\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Start the next in the queue if the last step wasn't forced.\n\t\t\t// Timers currently will call their complete callbacks, which\n\t\t\t// will dequeue but only if they were gotoEnd.\n\t\t\tif ( dequeue || !gotoEnd ) {\n\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t}\n\t\t} );\n\t},\n\tfinish: function( type ) {\n\t\tif ( type !== false ) {\n\t\t\ttype = type || \"fx\";\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tvar index,\n\t\t\t\tdata = dataPriv.get( this ),\n\t\t\t\tqueue = data[ type + \"queue\" ],\n\t\t\t\thooks = data[ type + \"queueHooks\" ],\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tlength = queue ? queue.length : 0;\n\n\t\t\t// Enable finishing flag on private data\n\t\t\tdata.finish = true;\n\n\t\t\t// Empty the queue first\n\t\t\tjQuery.queue( this, type, [] );\n\n\t\t\tif ( hooks && hooks.stop ) {\n\t\t\t\thooks.stop.call( this, true );\n\t\t\t}\n\n\t\t\t// Look for any active animations, and finish them\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this && timers[ index ].queue === type ) {\n\t\t\t\t\ttimers[ index ].anim.stop( true );\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Look for any animations in the old queue and finish them\n\t\t\tfor ( index = 0; index < length; index++ ) {\n\t\t\t\tif ( queue[ index ] && queue[ index ].finish ) {\n\t\t\t\t\tqueue[ index ].finish.call( this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Turn off finishing flag\n\t\t\tdelete data.finish;\n\t\t} );\n\t}\n} );\n\njQuery.each( [ \"toggle\", \"show\", \"hide\" ], function( _i, name ) {\n\tvar cssFn = jQuery.fn[ name ];\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn speed == null || typeof speed === \"boolean\" ?\n\t\t\tcssFn.apply( this, arguments ) :\n\t\t\tthis.animate( genFx( name, true ), speed, easing, callback );\n\t};\n} );\n\n// Generate shortcuts for custom animations\njQuery.each( {\n\tslideDown: genFx( \"show\" ),\n\tslideUp: genFx( \"hide\" ),\n\tslideToggle: genFx( \"toggle\" ),\n\tfadeIn: { opacity: \"show\" },\n\tfadeOut: { opacity: \"hide\" },\n\tfadeToggle: { opacity: \"toggle\" }\n}, function( name, props ) {\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn this.animate( props, speed, easing, callback );\n\t};\n} );\n\njQuery.timers = [];\njQuery.fx.tick = function() {\n\tvar timer,\n\t\ti = 0,\n\t\ttimers = jQuery.timers;\n\n\tfxNow = Date.now();\n\n\tfor ( ; i < timers.length; i++ ) {\n\t\ttimer = timers[ i ];\n\n\t\t// Run the timer and safely remove it when done (allowing for external removal)\n\t\tif ( !timer() && timers[ i ] === timer ) {\n\t\t\ttimers.splice( i--, 1 );\n\t\t}\n\t}\n\n\tif ( !timers.length ) {\n\t\tjQuery.fx.stop();\n\t}\n\tfxNow = undefined;\n};\n\njQuery.fx.timer = function( timer ) {\n\tjQuery.timers.push( timer );\n\tjQuery.fx.start();\n};\n\njQuery.fx.interval = 13;\njQuery.fx.start = function() {\n\tif ( inProgress ) {\n\t\treturn;\n\t}\n\n\tinProgress = true;\n\tschedule();\n};\n\njQuery.fx.stop = function() {\n\tinProgress = null;\n};\n\njQuery.fx.speeds = {\n\tslow: 600,\n\tfast: 200,\n\n\t// Default speed\n\t_default: 400\n};\n\n\n// Based off of the plugin by Clint Helfers, with permission.\njQuery.fn.delay = function( time, type ) {\n\ttime = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;\n\ttype = type || \"fx\";\n\n\treturn this.queue( type, function( next, hooks ) {\n\t\tvar timeout = window.setTimeout( next, time );\n\t\thooks.stop = function() {\n\t\t\twindow.clearTimeout( timeout );\n\t\t};\n\t} );\n};\n\n\n( function() {\n\tvar input = document.createElement( \"input\" ),\n\t\tselect = document.createElement( \"select\" ),\n\t\topt = select.appendChild( document.createElement( \"option\" ) );\n\n\tinput.type = \"checkbox\";\n\n\t// Support: Android <=4.3 only\n\t// Default value for a checkbox should be \"on\"\n\tsupport.checkOn = input.value !== \"\";\n\n\t// Support: IE <=11 only\n\t// Must access selectedIndex to make default options select\n\tsupport.optSelected = opt.selected;\n\n\t// Support: IE <=11 only\n\t// An input loses its value after becoming a radio\n\tinput = document.createElement( \"input\" );\n\tinput.value = \"t\";\n\tinput.type = \"radio\";\n\tsupport.radioValue = input.value === \"t\";\n} )();\n\n\nvar boolHook,\n\tattrHandle = jQuery.expr.attrHandle;\n\njQuery.fn.extend( {\n\tattr: function( name, value ) {\n\t\treturn access( this, jQuery.attr, name, value, arguments.length > 1 );\n\t},\n\n\tremoveAttr: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.removeAttr( this, name );\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tattr: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set attributes on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Fallback to prop when attributes are not supported\n\t\tif ( typeof elem.getAttribute === \"undefined\" ) {\n\t\t\treturn jQuery.prop( elem, name, value );\n\t\t}\n\n\t\t// Attribute hooks are determined by the lowercase version\n\t\t// Grab necessary hook if one is defined\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\t\t\thooks = jQuery.attrHooks[ name.toLowerCase() ] ||\n\t\t\t\t( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( value === null ) {\n\t\t\t\tjQuery.removeAttr( elem, name );\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\telem.setAttribute( name, value + \"\" );\n\t\t\treturn value;\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\tret = jQuery.find.attr( elem, name );\n\n\t\t// Non-existent attributes return null, we normalize to undefined\n\t\treturn ret == null ? undefined : ret;\n\t},\n\n\tattrHooks: {\n\t\ttype: {\n\t\t\tset: function( elem, value ) {\n\t\t\t\tif ( !support.radioValue && value === \"radio\" &&\n\t\t\t\t\tnodeName( elem, \"input\" ) ) {\n\t\t\t\t\tvar val = elem.value;\n\t\t\t\t\telem.setAttribute( \"type\", value );\n\t\t\t\t\tif ( val ) {\n\t\t\t\t\t\telem.value = val;\n\t\t\t\t\t}\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\tremoveAttr: function( elem, value ) {\n\t\tvar name,\n\t\t\ti = 0,\n\n\t\t\t// Attribute names can contain non-HTML whitespace characters\n\t\t\t// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n\t\t\tattrNames = value && value.match( rnothtmlwhite );\n\n\t\tif ( attrNames && elem.nodeType === 1 ) {\n\t\t\twhile ( ( name = attrNames[ i++ ] ) ) {\n\t\t\t\telem.removeAttribute( name );\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Hooks for boolean attributes\nboolHook = {\n\tset: function( elem, value, name ) {\n\t\tif ( value === false ) {\n\n\t\t\t// Remove boolean attributes when set to false\n\t\t\tjQuery.removeAttr( elem, name );\n\t\t} else {\n\t\t\telem.setAttribute( name, name );\n\t\t}\n\t\treturn name;\n\t}\n};\n\njQuery.each( jQuery.expr.match.bool.source.match( /\\w+/g ), function( _i, name ) {\n\tvar getter = attrHandle[ name ] || jQuery.find.attr;\n\n\tattrHandle[ name ] = function( elem, name, isXML ) {\n\t\tvar ret, handle,\n\t\t\tlowercaseName = name.toLowerCase();\n\n\t\tif ( !isXML ) {\n\n\t\t\t// Avoid an infinite loop by temporarily removing this function from the getter\n\t\t\thandle = attrHandle[ lowercaseName ];\n\t\t\tattrHandle[ lowercaseName ] = ret;\n\t\t\tret = getter( elem, name, isXML ) != null ?\n\t\t\t\tlowercaseName :\n\t\t\t\tnull;\n\t\t\tattrHandle[ lowercaseName ] = handle;\n\t\t}\n\t\treturn ret;\n\t};\n} );\n\n\n\n\nvar rfocusable = /^(?:input|select|textarea|button)$/i,\n\trclickable = /^(?:a|area)$/i;\n\njQuery.fn.extend( {\n\tprop: function( name, value ) {\n\t\treturn access( this, jQuery.prop, name, value, arguments.length > 1 );\n\t},\n\n\tremoveProp: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tdelete this[ jQuery.propFix[ name ] || name ];\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tprop: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set properties on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// Fix name and attach hooks\n\t\t\tname = jQuery.propFix[ name ] || name;\n\t\t\thooks = jQuery.propHooks[ name ];\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\treturn ( elem[ name ] = value );\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\treturn elem[ name ];\n\t},\n\n\tpropHooks: {\n\t\ttabIndex: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\t// Support: IE <=9 - 11 only\n\t\t\t\t// elem.tabIndex doesn't always return the\n\t\t\t\t// correct value when it hasn't been explicitly set\n\t\t\t\t// Use proper attribute retrieval (trac-12072)\n\t\t\t\tvar tabindex = jQuery.find.attr( elem, \"tabindex\" );\n\n\t\t\t\tif ( tabindex ) {\n\t\t\t\t\treturn parseInt( tabindex, 10 );\n\t\t\t\t}\n\n\t\t\t\tif (\n\t\t\t\t\trfocusable.test( elem.nodeName ) ||\n\t\t\t\t\trclickable.test( elem.nodeName ) &&\n\t\t\t\t\telem.href\n\t\t\t\t) {\n\t\t\t\t\treturn 0;\n\t\t\t\t}\n\n\t\t\t\treturn -1;\n\t\t\t}\n\t\t}\n\t},\n\n\tpropFix: {\n\t\t\"for\": \"htmlFor\",\n\t\t\"class\": \"className\"\n\t}\n} );\n\n// Support: IE <=11 only\n// Accessing the selectedIndex property\n// forces the browser to respect setting selected\n// on the option\n// The getter ensures a default option is selected\n// when in an optgroup\n// eslint rule \"no-unused-expressions\" is disabled for this code\n// since it considers such accessions noop\nif ( !support.optSelected ) {\n\tjQuery.propHooks.selected = {\n\t\tget: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent && parent.parentNode ) {\n\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t}\n\t\t\treturn null;\n\t\t},\n\t\tset: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent ) {\n\t\t\t\tparent.selectedIndex;\n\n\t\t\t\tif ( parent.parentNode ) {\n\t\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\njQuery.each( [\n\t\"tabIndex\",\n\t\"readOnly\",\n\t\"maxLength\",\n\t\"cellSpacing\",\n\t\"cellPadding\",\n\t\"rowSpan\",\n\t\"colSpan\",\n\t\"useMap\",\n\t\"frameBorder\",\n\t\"contentEditable\"\n], function() {\n\tjQuery.propFix[ this.toLowerCase() ] = this;\n} );\n\n\n\n\n\t// Strip and collapse whitespace according to HTML spec\n\t// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\n\tfunction stripAndCollapse( value ) {\n\t\tvar tokens = value.match( rnothtmlwhite ) || [];\n\t\treturn tokens.join( \" \" );\n\t}\n\n\nfunction getClass( elem ) {\n\treturn elem.getAttribute && elem.getAttribute( \"class\" ) || \"\";\n}\n\nfunction classesToArray( value ) {\n\tif ( Array.isArray( value ) ) {\n\t\treturn value;\n\t}\n\tif ( typeof value === \"string\" ) {\n\t\treturn value.match( rnothtmlwhite ) || [];\n\t}\n\treturn [];\n}\n\njQuery.fn.extend( {\n\taddClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).addClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\t\t\t\t\t\tif ( cur.indexOf( \" \" + className + \" \" ) < 0 ) {\n\t\t\t\t\t\t\tcur += className + \" \";\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tremoveClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tif ( !arguments.length ) {\n\t\t\treturn this.attr( \"class\", \"\" );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\n\t\t\t\t// This expression is here for better compressibility (see addClass)\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t\t// Remove *all* instances\n\t\t\t\t\t\twhile ( cur.indexOf( \" \" + className + \" \" ) > -1 ) {\n\t\t\t\t\t\t\tcur = cur.replace( \" \" + className + \" \", \" \" );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\ttoggleClass: function( value, stateVal ) {\n\t\tvar classNames, className, i, self,\n\t\t\ttype = typeof value,\n\t\t\tisValidValue = type === \"string\" || Array.isArray( value );\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).toggleClass(\n\t\t\t\t\tvalue.call( this, i, getClass( this ), stateVal ),\n\t\t\t\t\tstateVal\n\t\t\t\t);\n\t\t\t} );\n\t\t}\n\n\t\tif ( typeof stateVal === \"boolean\" && isValidValue ) {\n\t\t\treturn stateVal ? this.addClass( value ) : this.removeClass( value );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\treturn this.each( function() {\n\t\t\tif ( isValidValue ) {\n\n\t\t\t\t// Toggle individual class names\n\t\t\t\tself = jQuery( this );\n\n\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t// Check each className given, space separated list\n\t\t\t\t\tif ( self.hasClass( className ) ) {\n\t\t\t\t\t\tself.removeClass( className );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tself.addClass( className );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t// Toggle whole class name\n\t\t\t} else if ( value === undefined || type === \"boolean\" ) {\n\t\t\t\tclassName = getClass( this );\n\t\t\t\tif ( className ) {\n\n\t\t\t\t\t// Store className if set\n\t\t\t\t\tdataPriv.set( this, \"__className__\", className );\n\t\t\t\t}\n\n\t\t\t\t// If the element has a class name or if we're passed `false`,\n\t\t\t\t// then remove the whole classname (if there was one, the above saved it).\n\t\t\t\t// Otherwise bring back whatever was previously saved (if anything),\n\t\t\t\t// falling back to the empty string if nothing was stored.\n\t\t\t\tif ( this.setAttribute ) {\n\t\t\t\t\tthis.setAttribute( \"class\",\n\t\t\t\t\t\tclassName || value === false ?\n\t\t\t\t\t\t\t\"\" :\n\t\t\t\t\t\t\tdataPriv.get( this, \"__className__\" ) || \"\"\n\t\t\t\t\t);\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\thasClass: function( selector ) {\n\t\tvar className, elem,\n\t\t\ti = 0;\n\n\t\tclassName = \" \" + selector + \" \";\n\t\twhile ( ( elem = this[ i++ ] ) ) {\n\t\t\tif ( elem.nodeType === 1 &&\n\t\t\t\t( \" \" + stripAndCollapse( getClass( elem ) ) + \" \" ).indexOf( className ) > -1 ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n} );\n\n\n\n\nvar rreturn = /\\r/g;\n\njQuery.fn.extend( {\n\tval: function( value ) {\n\t\tvar hooks, ret, valueIsFunction,\n\t\t\telem = this[ 0 ];\n\n\t\tif ( !arguments.length ) {\n\t\t\tif ( elem ) {\n\t\t\t\thooks = jQuery.valHooks[ elem.type ] ||\n\t\t\t\t\tjQuery.valHooks[ elem.nodeName.toLowerCase() ];\n\n\t\t\t\tif ( hooks &&\n\t\t\t\t\t\"get\" in hooks &&\n\t\t\t\t\t( ret = hooks.get( elem, \"value\" ) ) !== undefined\n\t\t\t\t) {\n\t\t\t\t\treturn ret;\n\t\t\t\t}\n\n\t\t\t\tret = elem.value;\n\n\t\t\t\t// Handle most common string cases\n\t\t\t\tif ( typeof ret === \"string\" ) {\n\t\t\t\t\treturn ret.replace( rreturn, \"\" );\n\t\t\t\t}\n\n\t\t\t\t// Handle cases where value is null/undef or number\n\t\t\t\treturn ret == null ? \"\" : ret;\n\t\t\t}\n\n\t\t\treturn;\n\t\t}\n\n\t\tvalueIsFunction = isFunction( value );\n\n\t\treturn this.each( function( i ) {\n\t\t\tvar val;\n\n\t\t\tif ( this.nodeType !== 1 ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\tval = value.call( this, i, jQuery( this ).val() );\n\t\t\t} else {\n\t\t\t\tval = value;\n\t\t\t}\n\n\t\t\t// Treat null/undefined as \"\"; convert numbers to string\n\t\t\tif ( val == null ) {\n\t\t\t\tval = \"\";\n\n\t\t\t} else if ( typeof val === \"number\" ) {\n\t\t\t\tval += \"\";\n\n\t\t\t} else if ( Array.isArray( val ) ) {\n\t\t\t\tval = jQuery.map( val, function( value ) {\n\t\t\t\t\treturn value == null ? \"\" : value + \"\";\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\thooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];\n\n\t\t\t// If set returns undefined, fall back to normal setting\n\t\t\tif ( !hooks || !( \"set\" in hooks ) || hooks.set( this, val, \"value\" ) === undefined ) {\n\t\t\t\tthis.value = val;\n\t\t\t}\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tvalHooks: {\n\t\toption: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\tvar val = jQuery.find.attr( elem, \"value\" );\n\t\t\t\treturn val != null ?\n\t\t\t\t\tval :\n\n\t\t\t\t\t// Support: IE <=10 - 11 only\n\t\t\t\t\t// option.text throws exceptions (trac-14686, trac-14858)\n\t\t\t\t\t// Strip and collapse whitespace\n\t\t\t\t\t// https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n\t\t\t\t\tstripAndCollapse( jQuery.text( elem ) );\n\t\t\t}\n\t\t},\n\t\tselect: {\n\t\t\tget: function( elem ) {\n\t\t\t\tvar value, option, i,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tindex = elem.selectedIndex,\n\t\t\t\t\tone = elem.type === \"select-one\",\n\t\t\t\t\tvalues = one ? null : [],\n\t\t\t\t\tmax = one ? index + 1 : options.length;\n\n\t\t\t\tif ( index < 0 ) {\n\t\t\t\t\ti = max;\n\n\t\t\t\t} else {\n\t\t\t\t\ti = one ? index : 0;\n\t\t\t\t}\n\n\t\t\t\t// Loop through all the selected options\n\t\t\t\tfor ( ; i < max; i++ ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t// IE8-9 doesn't update selected after form reset (trac-2551)\n\t\t\t\t\tif ( ( option.selected || i === index ) &&\n\n\t\t\t\t\t\t\t// Don't return options that are disabled or in a disabled optgroup\n\t\t\t\t\t\t\t!option.disabled &&\n\t\t\t\t\t\t\t( !option.parentNode.disabled ||\n\t\t\t\t\t\t\t\t!nodeName( option.parentNode, \"optgroup\" ) ) ) {\n\n\t\t\t\t\t\t// Get the specific value for the option\n\t\t\t\t\t\tvalue = jQuery( option ).val();\n\n\t\t\t\t\t\t// We don't need an array for one selects\n\t\t\t\t\t\tif ( one ) {\n\t\t\t\t\t\t\treturn value;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Multi-Selects return an array\n\t\t\t\t\t\tvalues.push( value );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn values;\n\t\t\t},\n\n\t\t\tset: function( elem, value ) {\n\t\t\t\tvar optionSet, option,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tvalues = jQuery.makeArray( value ),\n\t\t\t\t\ti = options.length;\n\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t/* eslint-disable no-cond-assign */\n\n\t\t\t\t\tif ( option.selected =\n\t\t\t\t\t\tjQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1\n\t\t\t\t\t) {\n\t\t\t\t\t\toptionSet = true;\n\t\t\t\t\t}\n\n\t\t\t\t\t/* eslint-enable no-cond-assign */\n\t\t\t\t}\n\n\t\t\t\t// Force browsers to behave consistently when non-matching value is set\n\t\t\t\tif ( !optionSet ) {\n\t\t\t\t\telem.selectedIndex = -1;\n\t\t\t\t}\n\t\t\t\treturn values;\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Radios and checkboxes getter/setter\njQuery.each( [ \"radio\", \"checkbox\" ], function() {\n\tjQuery.valHooks[ this ] = {\n\t\tset: function( elem, value ) {\n\t\t\tif ( Array.isArray( value ) ) {\n\t\t\t\treturn ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );\n\t\t\t}\n\t\t}\n\t};\n\tif ( !support.checkOn ) {\n\t\tjQuery.valHooks[ this ].get = function( elem ) {\n\t\t\treturn elem.getAttribute( \"value\" ) === null ? \"on\" : elem.value;\n\t\t};\n\t}\n} );\n\n\n\n\n// Return jQuery for attributes-only inclusion\nvar location = window.location;\n\nvar nonce = { guid: Date.now() };\n\nvar rquery = ( /\\?/ );\n\n\n\n// Cross-browser xml parsing\njQuery.parseXML = function( data ) {\n\tvar xml, parserErrorElem;\n\tif ( !data || typeof data !== \"string\" ) {\n\t\treturn null;\n\t}\n\n\t// Support: IE 9 - 11 only\n\t// IE throws on parseFromString with invalid input.\n\ttry {\n\t\txml = ( new window.DOMParser() ).parseFromString( data, \"text/xml\" );\n\t} catch ( e ) {}\n\n\tparserErrorElem = xml && xml.getElementsByTagName( \"parsererror\" )[ 0 ];\n\tif ( !xml || parserErrorElem ) {\n\t\tjQuery.error( \"Invalid XML: \" + (\n\t\t\tparserErrorElem ?\n\t\t\t\tjQuery.map( parserErrorElem.childNodes, function( el ) {\n\t\t\t\t\treturn el.textContent;\n\t\t\t\t} ).join( \"\\n\" ) :\n\t\t\t\tdata\n\t\t) );\n\t}\n\treturn xml;\n};\n\n\nvar rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,\n\tstopPropagationCallback = function( e ) {\n\t\te.stopPropagation();\n\t};\n\njQuery.extend( jQuery.event, {\n\n\ttrigger: function( event, data, elem, onlyHandlers ) {\n\n\t\tvar i, cur, tmp, bubbleType, ontype, handle, special, lastElement,\n\t\t\teventPath = [ elem || document ],\n\t\t\ttype = hasOwn.call( event, \"type\" ) ? event.type : event,\n\t\t\tnamespaces = hasOwn.call( event, \"namespace\" ) ? event.namespace.split( \".\" ) : [];\n\n\t\tcur = lastElement = tmp = elem = elem || document;\n\n\t\t// Don't do events on text and comment nodes\n\t\tif ( elem.nodeType === 3 || elem.nodeType === 8 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// focus/blur morphs to focusin/out; ensure we're not firing them right now\n\t\tif ( rfocusMorph.test( type + jQuery.event.triggered ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type.indexOf( \".\" ) > -1 ) {\n\n\t\t\t// Namespaced trigger; create a regexp to match event type in handle()\n\t\t\tnamespaces = type.split( \".\" );\n\t\t\ttype = namespaces.shift();\n\t\t\tnamespaces.sort();\n\t\t}\n\t\tontype = type.indexOf( \":\" ) < 0 && \"on\" + type;\n\n\t\t// Caller can pass in a jQuery.Event object, Object, or just an event type string\n\t\tevent = event[ jQuery.expando ] ?\n\t\t\tevent :\n\t\t\tnew jQuery.Event( type, typeof event === \"object\" && event );\n\n\t\t// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n\t\tevent.isTrigger = onlyHandlers ? 2 : 3;\n\t\tevent.namespace = namespaces.join( \".\" );\n\t\tevent.rnamespace = event.namespace ?\n\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" ) :\n\t\t\tnull;\n\n\t\t// Clean up the event in case it is being reused\n\t\tevent.result = undefined;\n\t\tif ( !event.target ) {\n\t\t\tevent.target = elem;\n\t\t}\n\n\t\t// Clone any incoming data and prepend the event, creating the handler arg list\n\t\tdata = data == null ?\n\t\t\t[ event ] :\n\t\t\tjQuery.makeArray( data, [ event ] );\n\n\t\t// Allow special events to draw outside the lines\n\t\tspecial = jQuery.event.special[ type ] || {};\n\t\tif ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine event propagation path in advance, per W3C events spec (trac-9951)\n\t\t// Bubble up to document, then to window; watch for a global ownerDocument var (trac-9724)\n\t\tif ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {\n\n\t\t\tbubbleType = special.delegateType || type;\n\t\t\tif ( !rfocusMorph.test( bubbleType + type ) ) {\n\t\t\t\tcur = cur.parentNode;\n\t\t\t}\n\t\t\tfor ( ; cur; cur = cur.parentNode ) {\n\t\t\t\teventPath.push( cur );\n\t\t\t\ttmp = cur;\n\t\t\t}\n\n\t\t\t// Only add window if we got to document (e.g., not plain obj or detached DOM)\n\t\t\tif ( tmp === ( elem.ownerDocument || document ) ) {\n\t\t\t\teventPath.push( tmp.defaultView || tmp.parentWindow || window );\n\t\t\t}\n\t\t}\n\n\t\t// Fire handlers on the event path\n\t\ti = 0;\n\t\twhile ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tlastElement = cur;\n\t\t\tevent.type = i > 1 ?\n\t\t\t\tbubbleType :\n\t\t\t\tspecial.bindType || type;\n\n\t\t\t// jQuery handler\n\t\t\thandle = ( dataPriv.get( cur, \"events\" ) || Object.create( null ) )[ event.type ] &&\n\t\t\t\tdataPriv.get( cur, \"handle\" );\n\t\t\tif ( handle ) {\n\t\t\t\thandle.apply( cur, data );\n\t\t\t}\n\n\t\t\t// Native handler\n\t\t\thandle = ontype && cur[ ontype ];\n\t\t\tif ( handle && handle.apply && acceptData( cur ) ) {\n\t\t\t\tevent.result = handle.apply( cur, data );\n\t\t\t\tif ( event.result === false ) {\n\t\t\t\t\tevent.preventDefault();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tevent.type = type;\n\n\t\t// If nobody prevented the default action, do it now\n\t\tif ( !onlyHandlers && !event.isDefaultPrevented() ) {\n\n\t\t\tif ( ( !special._default ||\n\t\t\t\tspecial._default.apply( eventPath.pop(), data ) === false ) &&\n\t\t\t\tacceptData( elem ) ) {\n\n\t\t\t\t// Call a native DOM method on the target with the same name as the event.\n\t\t\t\t// Don't do default actions on window, that's where global variables be (trac-6170)\n\t\t\t\tif ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {\n\n\t\t\t\t\t// Don't re-trigger an onFOO event when we call its FOO() method\n\t\t\t\t\ttmp = elem[ ontype ];\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = null;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prevent re-triggering of the same event, since we already bubbled it above\n\t\t\t\t\tjQuery.event.triggered = type;\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.addEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\telem[ type ]();\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.removeEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\tjQuery.event.triggered = undefined;\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = tmp;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\t// Piggyback on a donor event to simulate a different one\n\t// Used only for `focus(in | out)` events\n\tsimulate: function( type, elem, event ) {\n\t\tvar e = jQuery.extend(\n\t\t\tnew jQuery.Event(),\n\t\t\tevent,\n\t\t\t{\n\t\t\t\ttype: type,\n\t\t\t\tisSimulated: true\n\t\t\t}\n\t\t);\n\n\t\tjQuery.event.trigger( e, null, elem );\n\t}\n\n} );\n\njQuery.fn.extend( {\n\n\ttrigger: function( type, data ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.trigger( type, data, this );\n\t\t} );\n\t},\n\ttriggerHandler: function( type, data ) {\n\t\tvar elem = this[ 0 ];\n\t\tif ( elem ) {\n\t\t\treturn jQuery.event.trigger( type, data, elem, true );\n\t\t}\n\t}\n} );\n\n\nvar\n\trbracket = /\\[\\]$/,\n\trCRLF = /\\r?\\n/g,\n\trsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,\n\trsubmittable = /^(?:input|select|textarea|keygen)/i;\n\nfunction buildParams( prefix, obj, traditional, add ) {\n\tvar name;\n\n\tif ( Array.isArray( obj ) ) {\n\n\t\t// Serialize array item.\n\t\tjQuery.each( obj, function( i, v ) {\n\t\t\tif ( traditional || rbracket.test( prefix ) ) {\n\n\t\t\t\t// Treat each array item as a scalar.\n\t\t\t\tadd( prefix, v );\n\n\t\t\t} else {\n\n\t\t\t\t// Item is non-scalar (array or object), encode its numeric index.\n\t\t\t\tbuildParams(\n\t\t\t\t\tprefix + \"[\" + ( typeof v === \"object\" && v != null ? i : \"\" ) + \"]\",\n\t\t\t\t\tv,\n\t\t\t\t\ttraditional,\n\t\t\t\t\tadd\n\t\t\t\t);\n\t\t\t}\n\t\t} );\n\n\t} else if ( !traditional && toType( obj ) === \"object\" ) {\n\n\t\t// Serialize object item.\n\t\tfor ( name in obj ) {\n\t\t\tbuildParams( prefix + \"[\" + name + \"]\", obj[ name ], traditional, add );\n\t\t}\n\n\t} else {\n\n\t\t// Serialize scalar item.\n\t\tadd( prefix, obj );\n\t}\n}\n\n// Serialize an array of form elements or a set of\n// key/values into a query string\njQuery.param = function( a, traditional ) {\n\tvar prefix,\n\t\ts = [],\n\t\tadd = function( key, valueOrFunction ) {\n\n\t\t\t// If value is a function, invoke it and use its return value\n\t\t\tvar value = isFunction( valueOrFunction ) ?\n\t\t\t\tvalueOrFunction() :\n\t\t\t\tvalueOrFunction;\n\n\t\t\ts[ s.length ] = encodeURIComponent( key ) + \"=\" +\n\t\t\t\tencodeURIComponent( value == null ? \"\" : value );\n\t\t};\n\n\tif ( a == null ) {\n\t\treturn \"\";\n\t}\n\n\t// If an array was passed in, assume that it is an array of form elements.\n\tif ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {\n\n\t\t// Serialize the form elements\n\t\tjQuery.each( a, function() {\n\t\t\tadd( this.name, this.value );\n\t\t} );\n\n\t} else {\n\n\t\t// If traditional, encode the \"old\" way (the way 1.3.2 or older\n\t\t// did it), otherwise encode params recursively.\n\t\tfor ( prefix in a ) {\n\t\t\tbuildParams( prefix, a[ prefix ], traditional, add );\n\t\t}\n\t}\n\n\t// Return the resulting serialization\n\treturn s.join( \"&\" );\n};\n\njQuery.fn.extend( {\n\tserialize: function() {\n\t\treturn jQuery.param( this.serializeArray() );\n\t},\n\tserializeArray: function() {\n\t\treturn this.map( function() {\n\n\t\t\t// Can add propHook for \"elements\" to filter or add form elements\n\t\t\tvar elements = jQuery.prop( this, \"elements\" );\n\t\t\treturn elements ? jQuery.makeArray( elements ) : this;\n\t\t} ).filter( function() {\n\t\t\tvar type = this.type;\n\n\t\t\t// Use .is( \":disabled\" ) so that fieldset[disabled] works\n\t\t\treturn this.name && !jQuery( this ).is( \":disabled\" ) &&\n\t\t\t\trsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&\n\t\t\t\t( this.checked || !rcheckableType.test( type ) );\n\t\t} ).map( function( _i, elem ) {\n\t\t\tvar val = jQuery( this ).val();\n\n\t\t\tif ( val == null ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ( Array.isArray( val ) ) {\n\t\t\t\treturn jQuery.map( val, function( val ) {\n\t\t\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t} ).get();\n\t}\n} );\n\n\nvar\n\tr20 = /%20/g,\n\trhash = /#.*$/,\n\trantiCache = /([?&])_=[^&]*/,\n\trheaders = /^(.*?):[ \\t]*([^\\r\\n]*)$/mg,\n\n\t// trac-7653, trac-8125, trac-8152: local protocol detection\n\trlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,\n\trnoContent = /^(?:GET|HEAD)$/,\n\trprotocol = /^\\/\\//,\n\n\t/* Prefilters\n\t * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)\n\t * 2) These are called:\n\t *    - BEFORE asking for a transport\n\t *    - AFTER param serialization (s.data is a string if s.processData is true)\n\t * 3) key is the dataType\n\t * 4) the catchall symbol \"*\" can be used\n\t * 5) execution will start with transport dataType and THEN continue down to \"*\" if needed\n\t */\n\tprefilters = {},\n\n\t/* Transports bindings\n\t * 1) key is the dataType\n\t * 2) the catchall symbol \"*\" can be used\n\t * 3) selection will start with transport dataType and THEN go to \"*\" if needed\n\t */\n\ttransports = {},\n\n\t// Avoid comment-prolog char sequence (trac-10098); must appease lint and evade compression\n\tallTypes = \"*/\".concat( \"*\" ),\n\n\t// Anchor tag for parsing the document origin\n\toriginAnchor = document.createElement( \"a\" );\n\noriginAnchor.href = location.href;\n\n// Base \"constructor\" for jQuery.ajaxPrefilter and jQuery.ajaxTransport\nfunction addToPrefiltersOrTransports( structure ) {\n\n\t// dataTypeExpression is optional and defaults to \"*\"\n\treturn function( dataTypeExpression, func ) {\n\n\t\tif ( typeof dataTypeExpression !== \"string\" ) {\n\t\t\tfunc = dataTypeExpression;\n\t\t\tdataTypeExpression = \"*\";\n\t\t}\n\n\t\tvar dataType,\n\t\t\ti = 0,\n\t\t\tdataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];\n\n\t\tif ( isFunction( func ) ) {\n\n\t\t\t// For each dataType in the dataTypeExpression\n\t\t\twhile ( ( dataType = dataTypes[ i++ ] ) ) {\n\n\t\t\t\t// Prepend if requested\n\t\t\t\tif ( dataType[ 0 ] === \"+\" ) {\n\t\t\t\t\tdataType = dataType.slice( 1 ) || \"*\";\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );\n\n\t\t\t\t// Otherwise append\n\t\t\t\t} else {\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).push( func );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\n// Base inspection function for prefilters and transports\nfunction inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {\n\n\tvar inspected = {},\n\t\tseekingTransport = ( structure === transports );\n\n\tfunction inspect( dataType ) {\n\t\tvar selected;\n\t\tinspected[ dataType ] = true;\n\t\tjQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {\n\t\t\tvar dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );\n\t\t\tif ( typeof dataTypeOrTransport === \"string\" &&\n\t\t\t\t!seekingTransport && !inspected[ dataTypeOrTransport ] ) {\n\n\t\t\t\toptions.dataTypes.unshift( dataTypeOrTransport );\n\t\t\t\tinspect( dataTypeOrTransport );\n\t\t\t\treturn false;\n\t\t\t} else if ( seekingTransport ) {\n\t\t\t\treturn !( selected = dataTypeOrTransport );\n\t\t\t}\n\t\t} );\n\t\treturn selected;\n\t}\n\n\treturn inspect( options.dataTypes[ 0 ] ) || !inspected[ \"*\" ] && inspect( \"*\" );\n}\n\n// A special extend for ajax options\n// that takes \"flat\" options (not to be deep extended)\n// Fixes trac-9887\nfunction ajaxExtend( target, src ) {\n\tvar key, deep,\n\t\tflatOptions = jQuery.ajaxSettings.flatOptions || {};\n\n\tfor ( key in src ) {\n\t\tif ( src[ key ] !== undefined ) {\n\t\t\t( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];\n\t\t}\n\t}\n\tif ( deep ) {\n\t\tjQuery.extend( true, target, deep );\n\t}\n\n\treturn target;\n}\n\n/* Handles responses to an ajax request:\n * - finds the right dataType (mediates between content-type and expected dataType)\n * - returns the corresponding response\n */\nfunction ajaxHandleResponses( s, jqXHR, responses ) {\n\n\tvar ct, type, finalDataType, firstDataType,\n\t\tcontents = s.contents,\n\t\tdataTypes = s.dataTypes;\n\n\t// Remove auto dataType and get content-type in the process\n\twhile ( dataTypes[ 0 ] === \"*\" ) {\n\t\tdataTypes.shift();\n\t\tif ( ct === undefined ) {\n\t\t\tct = s.mimeType || jqXHR.getResponseHeader( \"Content-Type\" );\n\t\t}\n\t}\n\n\t// Check if we're dealing with a known content-type\n\tif ( ct ) {\n\t\tfor ( type in contents ) {\n\t\t\tif ( contents[ type ] && contents[ type ].test( ct ) ) {\n\t\t\t\tdataTypes.unshift( type );\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Check to see if we have a response for the expected dataType\n\tif ( dataTypes[ 0 ] in responses ) {\n\t\tfinalDataType = dataTypes[ 0 ];\n\t} else {\n\n\t\t// Try convertible dataTypes\n\t\tfor ( type in responses ) {\n\t\t\tif ( !dataTypes[ 0 ] || s.converters[ type + \" \" + dataTypes[ 0 ] ] ) {\n\t\t\t\tfinalDataType = type;\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( !firstDataType ) {\n\t\t\t\tfirstDataType = type;\n\t\t\t}\n\t\t}\n\n\t\t// Or just use first one\n\t\tfinalDataType = finalDataType || firstDataType;\n\t}\n\n\t// If we found a dataType\n\t// We add the dataType to the list if needed\n\t// and return the corresponding response\n\tif ( finalDataType ) {\n\t\tif ( finalDataType !== dataTypes[ 0 ] ) {\n\t\t\tdataTypes.unshift( finalDataType );\n\t\t}\n\t\treturn responses[ finalDataType ];\n\t}\n}\n\n/* Chain conversions given the request and the original response\n * Also sets the responseXXX fields on the jqXHR instance\n */\nfunction ajaxConvert( s, response, jqXHR, isSuccess ) {\n\tvar conv2, current, conv, tmp, prev,\n\t\tconverters = {},\n\n\t\t// Work with a copy of dataTypes in case we need to modify it for conversion\n\t\tdataTypes = s.dataTypes.slice();\n\n\t// Create converters map with lowercased keys\n\tif ( dataTypes[ 1 ] ) {\n\t\tfor ( conv in s.converters ) {\n\t\t\tconverters[ conv.toLowerCase() ] = s.converters[ conv ];\n\t\t}\n\t}\n\n\tcurrent = dataTypes.shift();\n\n\t// Convert to each sequential dataType\n\twhile ( current ) {\n\n\t\tif ( s.responseFields[ current ] ) {\n\t\t\tjqXHR[ s.responseFields[ current ] ] = response;\n\t\t}\n\n\t\t// Apply the dataFilter if provided\n\t\tif ( !prev && isSuccess && s.dataFilter ) {\n\t\t\tresponse = s.dataFilter( response, s.dataType );\n\t\t}\n\n\t\tprev = current;\n\t\tcurrent = dataTypes.shift();\n\n\t\tif ( current ) {\n\n\t\t\t// There's only work to do if current dataType is non-auto\n\t\t\tif ( current === \"*\" ) {\n\n\t\t\t\tcurrent = prev;\n\n\t\t\t// Convert response if prev dataType is non-auto and differs from current\n\t\t\t} else if ( prev !== \"*\" && prev !== current ) {\n\n\t\t\t\t// Seek a direct converter\n\t\t\t\tconv = converters[ prev + \" \" + current ] || converters[ \"* \" + current ];\n\n\t\t\t\t// If none found, seek a pair\n\t\t\t\tif ( !conv ) {\n\t\t\t\t\tfor ( conv2 in converters ) {\n\n\t\t\t\t\t\t// If conv2 outputs current\n\t\t\t\t\t\ttmp = conv2.split( \" \" );\n\t\t\t\t\t\tif ( tmp[ 1 ] === current ) {\n\n\t\t\t\t\t\t\t// If prev can be converted to accepted input\n\t\t\t\t\t\t\tconv = converters[ prev + \" \" + tmp[ 0 ] ] ||\n\t\t\t\t\t\t\t\tconverters[ \"* \" + tmp[ 0 ] ];\n\t\t\t\t\t\t\tif ( conv ) {\n\n\t\t\t\t\t\t\t\t// Condense equivalence converters\n\t\t\t\t\t\t\t\tif ( conv === true ) {\n\t\t\t\t\t\t\t\t\tconv = converters[ conv2 ];\n\n\t\t\t\t\t\t\t\t// Otherwise, insert the intermediate dataType\n\t\t\t\t\t\t\t\t} else if ( converters[ conv2 ] !== true ) {\n\t\t\t\t\t\t\t\t\tcurrent = tmp[ 0 ];\n\t\t\t\t\t\t\t\t\tdataTypes.unshift( tmp[ 1 ] );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Apply converter (if not an equivalence)\n\t\t\t\tif ( conv !== true ) {\n\n\t\t\t\t\t// Unless errors are allowed to bubble, catch and return them\n\t\t\t\t\tif ( conv && s.throws ) {\n\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t\t} catch ( e ) {\n\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\tstate: \"parsererror\",\n\t\t\t\t\t\t\t\terror: conv ? e : \"No conversion from \" + prev + \" to \" + current\n\t\t\t\t\t\t\t};\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn { state: \"success\", data: response };\n}\n\njQuery.extend( {\n\n\t// Counter for holding the number of active queries\n\tactive: 0,\n\n\t// Last-Modified header cache for next request\n\tlastModified: {},\n\tetag: {},\n\n\tajaxSettings: {\n\t\turl: location.href,\n\t\ttype: \"GET\",\n\t\tisLocal: rlocalProtocol.test( location.protocol ),\n\t\tglobal: true,\n\t\tprocessData: true,\n\t\tasync: true,\n\t\tcontentType: \"application/x-www-form-urlencoded; charset=UTF-8\",\n\n\t\t/*\n\t\ttimeout: 0,\n\t\tdata: null,\n\t\tdataType: null,\n\t\tusername: null,\n\t\tpassword: null,\n\t\tcache: null,\n\t\tthrows: false,\n\t\ttraditional: false,\n\t\theaders: {},\n\t\t*/\n\n\t\taccepts: {\n\t\t\t\"*\": allTypes,\n\t\t\ttext: \"text/plain\",\n\t\t\thtml: \"text/html\",\n\t\t\txml: \"application/xml, text/xml\",\n\t\t\tjson: \"application/json, text/javascript\"\n\t\t},\n\n\t\tcontents: {\n\t\t\txml: /\\bxml\\b/,\n\t\t\thtml: /\\bhtml/,\n\t\t\tjson: /\\bjson\\b/\n\t\t},\n\n\t\tresponseFields: {\n\t\t\txml: \"responseXML\",\n\t\t\ttext: \"responseText\",\n\t\t\tjson: \"responseJSON\"\n\t\t},\n\n\t\t// Data converters\n\t\t// Keys separate source (or catchall \"*\") and destination types with a single space\n\t\tconverters: {\n\n\t\t\t// Convert anything to text\n\t\t\t\"* text\": String,\n\n\t\t\t// Text to html (true = no transformation)\n\t\t\t\"text html\": true,\n\n\t\t\t// Evaluate text as a json expression\n\t\t\t\"text json\": JSON.parse,\n\n\t\t\t// Parse text as xml\n\t\t\t\"text xml\": jQuery.parseXML\n\t\t},\n\n\t\t// For options that shouldn't be deep extended:\n\t\t// you can add your own custom options here if\n\t\t// and when you create one that shouldn't be\n\t\t// deep extended (see ajaxExtend)\n\t\tflatOptions: {\n\t\t\turl: true,\n\t\t\tcontext: true\n\t\t}\n\t},\n\n\t// Creates a full fledged settings object into target\n\t// with both ajaxSettings and settings fields.\n\t// If target is omitted, writes into ajaxSettings.\n\tajaxSetup: function( target, settings ) {\n\t\treturn settings ?\n\n\t\t\t// Building a settings object\n\t\t\tajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :\n\n\t\t\t// Extending ajaxSettings\n\t\t\tajaxExtend( jQuery.ajaxSettings, target );\n\t},\n\n\tajaxPrefilter: addToPrefiltersOrTransports( prefilters ),\n\tajaxTransport: addToPrefiltersOrTransports( transports ),\n\n\t// Main method\n\tajax: function( url, options ) {\n\n\t\t// If url is an object, simulate pre-1.5 signature\n\t\tif ( typeof url === \"object\" ) {\n\t\t\toptions = url;\n\t\t\turl = undefined;\n\t\t}\n\n\t\t// Force options to be an object\n\t\toptions = options || {};\n\n\t\tvar transport,\n\n\t\t\t// URL without anti-cache param\n\t\t\tcacheURL,\n\n\t\t\t// Response headers\n\t\t\tresponseHeadersString,\n\t\t\tresponseHeaders,\n\n\t\t\t// timeout handle\n\t\t\ttimeoutTimer,\n\n\t\t\t// Url cleanup var\n\t\t\turlAnchor,\n\n\t\t\t// Request state (becomes false upon send and true upon completion)\n\t\t\tcompleted,\n\n\t\t\t// To know if global events are to be dispatched\n\t\t\tfireGlobals,\n\n\t\t\t// Loop variable\n\t\t\ti,\n\n\t\t\t// uncached part of the url\n\t\t\tuncached,\n\n\t\t\t// Create the final options object\n\t\t\ts = jQuery.ajaxSetup( {}, options ),\n\n\t\t\t// Callbacks context\n\t\t\tcallbackContext = s.context || s,\n\n\t\t\t// Context for global events is callbackContext if it is a DOM node or jQuery collection\n\t\t\tglobalEventContext = s.context &&\n\t\t\t\t( callbackContext.nodeType || callbackContext.jquery ) ?\n\t\t\t\tjQuery( callbackContext ) :\n\t\t\t\tjQuery.event,\n\n\t\t\t// Deferreds\n\t\t\tdeferred = jQuery.Deferred(),\n\t\t\tcompleteDeferred = jQuery.Callbacks( \"once memory\" ),\n\n\t\t\t// Status-dependent callbacks\n\t\t\tstatusCode = s.statusCode || {},\n\n\t\t\t// Headers (they are sent all at once)\n\t\t\trequestHeaders = {},\n\t\t\trequestHeadersNames = {},\n\n\t\t\t// Default abort message\n\t\t\tstrAbort = \"canceled\",\n\n\t\t\t// Fake xhr\n\t\t\tjqXHR = {\n\t\t\t\treadyState: 0,\n\n\t\t\t\t// Builds headers hashtable if needed\n\t\t\t\tgetResponseHeader: function( key ) {\n\t\t\t\t\tvar match;\n\t\t\t\t\tif ( completed ) {\n\t\t\t\t\t\tif ( !responseHeaders ) {\n\t\t\t\t\t\t\tresponseHeaders = {};\n\t\t\t\t\t\t\twhile ( ( match = rheaders.exec( responseHeadersString ) ) ) {\n\t\t\t\t\t\t\t\tresponseHeaders[ match[ 1 ].toLowerCase() + \" \" ] =\n\t\t\t\t\t\t\t\t\t( responseHeaders[ match[ 1 ].toLowerCase() + \" \" ] || [] )\n\t\t\t\t\t\t\t\t\t\t.concat( match[ 2 ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tmatch = responseHeaders[ key.toLowerCase() + \" \" ];\n\t\t\t\t\t}\n\t\t\t\t\treturn match == null ? null : match.join( \", \" );\n\t\t\t\t},\n\n\t\t\t\t// Raw string\n\t\t\t\tgetAllResponseHeaders: function() {\n\t\t\t\t\treturn completed ? responseHeadersString : null;\n\t\t\t\t},\n\n\t\t\t\t// Caches the header\n\t\t\t\tsetRequestHeader: function( name, value ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\tname = requestHeadersNames[ name.toLowerCase() ] =\n\t\t\t\t\t\t\trequestHeadersNames[ name.toLowerCase() ] || name;\n\t\t\t\t\t\trequestHeaders[ name ] = value;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Overrides response content-type header\n\t\t\t\toverrideMimeType: function( type ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\ts.mimeType = type;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Status-dependent callbacks\n\t\t\t\tstatusCode: function( map ) {\n\t\t\t\t\tvar code;\n\t\t\t\t\tif ( map ) {\n\t\t\t\t\t\tif ( completed ) {\n\n\t\t\t\t\t\t\t// Execute the appropriate callbacks\n\t\t\t\t\t\t\tjqXHR.always( map[ jqXHR.status ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Lazy-add the new callbacks in a way that preserves old ones\n\t\t\t\t\t\t\tfor ( code in map ) {\n\t\t\t\t\t\t\t\tstatusCode[ code ] = [ statusCode[ code ], map[ code ] ];\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Cancel the request\n\t\t\t\tabort: function( statusText ) {\n\t\t\t\t\tvar finalText = statusText || strAbort;\n\t\t\t\t\tif ( transport ) {\n\t\t\t\t\t\ttransport.abort( finalText );\n\t\t\t\t\t}\n\t\t\t\t\tdone( 0, finalText );\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t};\n\n\t\t// Attach deferreds\n\t\tdeferred.promise( jqXHR );\n\n\t\t// Add protocol if not provided (prefilters might expect it)\n\t\t// Handle falsy url in the settings object (trac-10093: consistency with old signature)\n\t\t// We also use the url parameter if available\n\t\ts.url = ( ( url || s.url || location.href ) + \"\" )\n\t\t\t.replace( rprotocol, location.protocol + \"//\" );\n\n\t\t// Alias method option to type as per ticket trac-12004\n\t\ts.type = options.method || options.type || s.method || s.type;\n\n\t\t// Extract dataTypes list\n\t\ts.dataTypes = ( s.dataType || \"*\" ).toLowerCase().match( rnothtmlwhite ) || [ \"\" ];\n\n\t\t// A cross-domain request is in order when the origin doesn't match the current origin.\n\t\tif ( s.crossDomain == null ) {\n\t\t\turlAnchor = document.createElement( \"a\" );\n\n\t\t\t// Support: IE <=8 - 11, Edge 12 - 15\n\t\t\t// IE throws exception on accessing the href property if url is malformed,\n\t\t\t// e.g. http://example.com:80x/\n\t\t\ttry {\n\t\t\t\turlAnchor.href = s.url;\n\n\t\t\t\t// Support: IE <=8 - 11 only\n\t\t\t\t// Anchor's host property isn't correctly set when s.url is relative\n\t\t\t\turlAnchor.href = urlAnchor.href;\n\t\t\t\ts.crossDomain = originAnchor.protocol + \"//\" + originAnchor.host !==\n\t\t\t\t\turlAnchor.protocol + \"//\" + urlAnchor.host;\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// If there is an error parsing the URL, assume it is crossDomain,\n\t\t\t\t// it can be rejected by the transport if it is invalid\n\t\t\t\ts.crossDomain = true;\n\t\t\t}\n\t\t}\n\n\t\t// Convert data if not already a string\n\t\tif ( s.data && s.processData && typeof s.data !== \"string\" ) {\n\t\t\ts.data = jQuery.param( s.data, s.traditional );\n\t\t}\n\n\t\t// Apply prefilters\n\t\tinspectPrefiltersOrTransports( prefilters, s, options, jqXHR );\n\n\t\t// If request was aborted inside a prefilter, stop there\n\t\tif ( completed ) {\n\t\t\treturn jqXHR;\n\t\t}\n\n\t\t// We can fire global events as of now if asked to\n\t\t// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (trac-15118)\n\t\tfireGlobals = jQuery.event && s.global;\n\n\t\t// Watch for a new set of requests\n\t\tif ( fireGlobals && jQuery.active++ === 0 ) {\n\t\t\tjQuery.event.trigger( \"ajaxStart\" );\n\t\t}\n\n\t\t// Uppercase the type\n\t\ts.type = s.type.toUpperCase();\n\n\t\t// Determine if request has content\n\t\ts.hasContent = !rnoContent.test( s.type );\n\n\t\t// Save the URL in case we're toying with the If-Modified-Since\n\t\t// and/or If-None-Match header later on\n\t\t// Remove hash to simplify url manipulation\n\t\tcacheURL = s.url.replace( rhash, \"\" );\n\n\t\t// More options handling for requests with no content\n\t\tif ( !s.hasContent ) {\n\n\t\t\t// Remember the hash so we can put it back\n\t\t\tuncached = s.url.slice( cacheURL.length );\n\n\t\t\t// If data is available and should be processed, append data to url\n\t\t\tif ( s.data && ( s.processData || typeof s.data === \"string\" ) ) {\n\t\t\t\tcacheURL += ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + s.data;\n\n\t\t\t\t// trac-9682: remove data so that it's not used in an eventual retry\n\t\t\t\tdelete s.data;\n\t\t\t}\n\n\t\t\t// Add or update anti-cache param if needed\n\t\t\tif ( s.cache === false ) {\n\t\t\t\tcacheURL = cacheURL.replace( rantiCache, \"$1\" );\n\t\t\t\tuncached = ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + \"_=\" + ( nonce.guid++ ) +\n\t\t\t\t\tuncached;\n\t\t\t}\n\n\t\t\t// Put hash and anti-cache on the URL that will be requested (gh-1732)\n\t\t\ts.url = cacheURL + uncached;\n\n\t\t// Change '%20' to '+' if this is encoded form body content (gh-2658)\n\t\t} else if ( s.data && s.processData &&\n\t\t\t( s.contentType || \"\" ).indexOf( \"application/x-www-form-urlencoded\" ) === 0 ) {\n\t\t\ts.data = s.data.replace( r20, \"+\" );\n\t\t}\n\n\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\tif ( s.ifModified ) {\n\t\t\tif ( jQuery.lastModified[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-Modified-Since\", jQuery.lastModified[ cacheURL ] );\n\t\t\t}\n\t\t\tif ( jQuery.etag[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-None-Match\", jQuery.etag[ cacheURL ] );\n\t\t\t}\n\t\t}\n\n\t\t// Set the correct header, if data is being sent\n\t\tif ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {\n\t\t\tjqXHR.setRequestHeader( \"Content-Type\", s.contentType );\n\t\t}\n\n\t\t// Set the Accepts header for the server, depending on the dataType\n\t\tjqXHR.setRequestHeader(\n\t\t\t\"Accept\",\n\t\t\ts.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?\n\t\t\t\ts.accepts[ s.dataTypes[ 0 ] ] +\n\t\t\t\t\t( s.dataTypes[ 0 ] !== \"*\" ? \", \" + allTypes + \"; q=0.01\" : \"\" ) :\n\t\t\t\ts.accepts[ \"*\" ]\n\t\t);\n\n\t\t// Check for headers option\n\t\tfor ( i in s.headers ) {\n\t\t\tjqXHR.setRequestHeader( i, s.headers[ i ] );\n\t\t}\n\n\t\t// Allow custom headers/mimetypes and early abort\n\t\tif ( s.beforeSend &&\n\t\t\t( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {\n\n\t\t\t// Abort if not done already and return\n\t\t\treturn jqXHR.abort();\n\t\t}\n\n\t\t// Aborting is no longer a cancellation\n\t\tstrAbort = \"abort\";\n\n\t\t// Install callbacks on deferreds\n\t\tcompleteDeferred.add( s.complete );\n\t\tjqXHR.done( s.success );\n\t\tjqXHR.fail( s.error );\n\n\t\t// Get transport\n\t\ttransport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );\n\n\t\t// If no transport, we auto-abort\n\t\tif ( !transport ) {\n\t\t\tdone( -1, \"No Transport\" );\n\t\t} else {\n\t\t\tjqXHR.readyState = 1;\n\n\t\t\t// Send global event\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxSend\", [ jqXHR, s ] );\n\t\t\t}\n\n\t\t\t// If request was aborted inside ajaxSend, stop there\n\t\t\tif ( completed ) {\n\t\t\t\treturn jqXHR;\n\t\t\t}\n\n\t\t\t// Timeout\n\t\t\tif ( s.async && s.timeout > 0 ) {\n\t\t\t\ttimeoutTimer = window.setTimeout( function() {\n\t\t\t\t\tjqXHR.abort( \"timeout\" );\n\t\t\t\t}, s.timeout );\n\t\t\t}\n\n\t\t\ttry {\n\t\t\t\tcompleted = false;\n\t\t\t\ttransport.send( requestHeaders, done );\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// Rethrow post-completion exceptions\n\t\t\t\tif ( completed ) {\n\t\t\t\t\tthrow e;\n\t\t\t\t}\n\n\t\t\t\t// Propagate others as results\n\t\t\t\tdone( -1, e );\n\t\t\t}\n\t\t}\n\n\t\t// Callback for when everything is done\n\t\tfunction done( status, nativeStatusText, responses, headers ) {\n\t\t\tvar isSuccess, success, error, response, modified,\n\t\t\t\tstatusText = nativeStatusText;\n\n\t\t\t// Ignore repeat invocations\n\t\t\tif ( completed ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tcompleted = true;\n\n\t\t\t// Clear timeout if it exists\n\t\t\tif ( timeoutTimer ) {\n\t\t\t\twindow.clearTimeout( timeoutTimer );\n\t\t\t}\n\n\t\t\t// Dereference transport for early garbage collection\n\t\t\t// (no matter how long the jqXHR object will be used)\n\t\t\ttransport = undefined;\n\n\t\t\t// Cache response headers\n\t\t\tresponseHeadersString = headers || \"\";\n\n\t\t\t// Set readyState\n\t\t\tjqXHR.readyState = status > 0 ? 4 : 0;\n\n\t\t\t// Determine if successful\n\t\t\tisSuccess = status >= 200 && status < 300 || status === 304;\n\n\t\t\t// Get response data\n\t\t\tif ( responses ) {\n\t\t\t\tresponse = ajaxHandleResponses( s, jqXHR, responses );\n\t\t\t}\n\n\t\t\t// Use a noop converter for missing script but not if jsonp\n\t\t\tif ( !isSuccess &&\n\t\t\t\tjQuery.inArray( \"script\", s.dataTypes ) > -1 &&\n\t\t\t\tjQuery.inArray( \"json\", s.dataTypes ) < 0 ) {\n\t\t\t\ts.converters[ \"text script\" ] = function() {};\n\t\t\t}\n\n\t\t\t// Convert no matter what (that way responseXXX fields are always set)\n\t\t\tresponse = ajaxConvert( s, response, jqXHR, isSuccess );\n\n\t\t\t// If successful, handle type chaining\n\t\t\tif ( isSuccess ) {\n\n\t\t\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\t\t\tif ( s.ifModified ) {\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"Last-Modified\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.lastModified[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"etag\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.etag[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// if no content\n\t\t\t\tif ( status === 204 || s.type === \"HEAD\" ) {\n\t\t\t\t\tstatusText = \"nocontent\";\n\n\t\t\t\t// if not modified\n\t\t\t\t} else if ( status === 304 ) {\n\t\t\t\t\tstatusText = \"notmodified\";\n\n\t\t\t\t// If we have data, let's convert it\n\t\t\t\t} else {\n\t\t\t\t\tstatusText = response.state;\n\t\t\t\t\tsuccess = response.data;\n\t\t\t\t\terror = response.error;\n\t\t\t\t\tisSuccess = !error;\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Extract error from statusText and normalize for non-aborts\n\t\t\t\terror = statusText;\n\t\t\t\tif ( status || !statusText ) {\n\t\t\t\t\tstatusText = \"error\";\n\t\t\t\t\tif ( status < 0 ) {\n\t\t\t\t\t\tstatus = 0;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Set data for the fake xhr object\n\t\t\tjqXHR.status = status;\n\t\t\tjqXHR.statusText = ( nativeStatusText || statusText ) + \"\";\n\n\t\t\t// Success/Error\n\t\t\tif ( isSuccess ) {\n\t\t\t\tdeferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );\n\t\t\t} else {\n\t\t\t\tdeferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );\n\t\t\t}\n\n\t\t\t// Status-dependent callbacks\n\t\t\tjqXHR.statusCode( statusCode );\n\t\t\tstatusCode = undefined;\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( isSuccess ? \"ajaxSuccess\" : \"ajaxError\",\n\t\t\t\t\t[ jqXHR, s, isSuccess ? success : error ] );\n\t\t\t}\n\n\t\t\t// Complete\n\t\t\tcompleteDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxComplete\", [ jqXHR, s ] );\n\n\t\t\t\t// Handle the global AJAX counter\n\t\t\t\tif ( !( --jQuery.active ) ) {\n\t\t\t\t\tjQuery.event.trigger( \"ajaxStop\" );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn jqXHR;\n\t},\n\n\tgetJSON: function( url, data, callback ) {\n\t\treturn jQuery.get( url, data, callback, \"json\" );\n\t},\n\n\tgetScript: function( url, callback ) {\n\t\treturn jQuery.get( url, undefined, callback, \"script\" );\n\t}\n} );\n\njQuery.each( [ \"get\", \"post\" ], function( _i, method ) {\n\tjQuery[ method ] = function( url, data, callback, type ) {\n\n\t\t// Shift arguments if data argument was omitted\n\t\tif ( isFunction( data ) ) {\n\t\t\ttype = type || callback;\n\t\t\tcallback = data;\n\t\t\tdata = undefined;\n\t\t}\n\n\t\t// The url can be an options object (which then must have .url)\n\t\treturn jQuery.ajax( jQuery.extend( {\n\t\t\turl: url,\n\t\t\ttype: method,\n\t\t\tdataType: type,\n\t\t\tdata: data,\n\t\t\tsuccess: callback\n\t\t}, jQuery.isPlainObject( url ) && url ) );\n\t};\n} );\n\njQuery.ajaxPrefilter( function( s ) {\n\tvar i;\n\tfor ( i in s.headers ) {\n\t\tif ( i.toLowerCase() === \"content-type\" ) {\n\t\t\ts.contentType = s.headers[ i ] || \"\";\n\t\t}\n\t}\n} );\n\n\njQuery._evalUrl = function( url, options, doc ) {\n\treturn jQuery.ajax( {\n\t\turl: url,\n\n\t\t// Make this explicit, since user can override this through ajaxSetup (trac-11264)\n\t\ttype: \"GET\",\n\t\tdataType: \"script\",\n\t\tcache: true,\n\t\tasync: false,\n\t\tglobal: false,\n\n\t\t// Only evaluate the response if it is successful (gh-4126)\n\t\t// dataFilter is not invoked for failure responses, so using it instead\n\t\t// of the default converter is kludgy but it works.\n\t\tconverters: {\n\t\t\t\"text script\": function() {}\n\t\t},\n\t\tdataFilter: function( response ) {\n\t\t\tjQuery.globalEval( response, options, doc );\n\t\t}\n\t} );\n};\n\n\njQuery.fn.extend( {\n\twrapAll: function( html ) {\n\t\tvar wrap;\n\n\t\tif ( this[ 0 ] ) {\n\t\t\tif ( isFunction( html ) ) {\n\t\t\t\thtml = html.call( this[ 0 ] );\n\t\t\t}\n\n\t\t\t// The elements to wrap the target around\n\t\t\twrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );\n\n\t\t\tif ( this[ 0 ].parentNode ) {\n\t\t\t\twrap.insertBefore( this[ 0 ] );\n\t\t\t}\n\n\t\t\twrap.map( function() {\n\t\t\t\tvar elem = this;\n\n\t\t\t\twhile ( elem.firstElementChild ) {\n\t\t\t\t\telem = elem.firstElementChild;\n\t\t\t\t}\n\n\t\t\t\treturn elem;\n\t\t\t} ).append( this );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\twrapInner: function( html ) {\n\t\tif ( isFunction( html ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).wrapInner( html.call( this, i ) );\n\t\t\t} );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar self = jQuery( this ),\n\t\t\t\tcontents = self.contents();\n\n\t\t\tif ( contents.length ) {\n\t\t\t\tcontents.wrapAll( html );\n\n\t\t\t} else {\n\t\t\t\tself.append( html );\n\t\t\t}\n\t\t} );\n\t},\n\n\twrap: function( html ) {\n\t\tvar htmlIsFunction = isFunction( html );\n\n\t\treturn this.each( function( i ) {\n\t\t\tjQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );\n\t\t} );\n\t},\n\n\tunwrap: function( selector ) {\n\t\tthis.parent( selector ).not( \"body\" ).each( function() {\n\t\t\tjQuery( this ).replaceWith( this.childNodes );\n\t\t} );\n\t\treturn this;\n\t}\n} );\n\n\njQuery.expr.pseudos.hidden = function( elem ) {\n\treturn !jQuery.expr.pseudos.visible( elem );\n};\njQuery.expr.pseudos.visible = function( elem ) {\n\treturn !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );\n};\n\n\n\n\njQuery.ajaxSettings.xhr = function() {\n\ttry {\n\t\treturn new window.XMLHttpRequest();\n\t} catch ( e ) {}\n};\n\nvar xhrSuccessStatus = {\n\n\t\t// File protocol always yields status code 0, assume 200\n\t\t0: 200,\n\n\t\t// Support: IE <=9 only\n\t\t// trac-1450: sometimes IE returns 1223 when it should be 204\n\t\t1223: 204\n\t},\n\txhrSupported = jQuery.ajaxSettings.xhr();\n\nsupport.cors = !!xhrSupported && ( \"withCredentials\" in xhrSupported );\nsupport.ajax = xhrSupported = !!xhrSupported;\n\njQuery.ajaxTransport( function( options ) {\n\tvar callback, errorCallback;\n\n\t// Cross domain only allowed if supported through XMLHttpRequest\n\tif ( support.cors || xhrSupported && !options.crossDomain ) {\n\t\treturn {\n\t\t\tsend: function( headers, complete ) {\n\t\t\t\tvar i,\n\t\t\t\t\txhr = options.xhr();\n\n\t\t\t\txhr.open(\n\t\t\t\t\toptions.type,\n\t\t\t\t\toptions.url,\n\t\t\t\t\toptions.async,\n\t\t\t\t\toptions.username,\n\t\t\t\t\toptions.password\n\t\t\t\t);\n\n\t\t\t\t// Apply custom fields if provided\n\t\t\t\tif ( options.xhrFields ) {\n\t\t\t\t\tfor ( i in options.xhrFields ) {\n\t\t\t\t\t\txhr[ i ] = options.xhrFields[ i ];\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Override mime type if needed\n\t\t\t\tif ( options.mimeType && xhr.overrideMimeType ) {\n\t\t\t\t\txhr.overrideMimeType( options.mimeType );\n\t\t\t\t}\n\n\t\t\t\t// X-Requested-With header\n\t\t\t\t// For cross-domain requests, seeing as conditions for a preflight are\n\t\t\t\t// akin to a jigsaw puzzle, we simply never set it to be sure.\n\t\t\t\t// (it can always be set on a per-request basis or even using ajaxSetup)\n\t\t\t\t// For same-domain requests, won't change header if already provided.\n\t\t\t\tif ( !options.crossDomain && !headers[ \"X-Requested-With\" ] ) {\n\t\t\t\t\theaders[ \"X-Requested-With\" ] = \"XMLHttpRequest\";\n\t\t\t\t}\n\n\t\t\t\t// Set headers\n\t\t\t\tfor ( i in headers ) {\n\t\t\t\t\txhr.setRequestHeader( i, headers[ i ] );\n\t\t\t\t}\n\n\t\t\t\t// Callback\n\t\t\t\tcallback = function( type ) {\n\t\t\t\t\treturn function() {\n\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\tcallback = errorCallback = xhr.onload =\n\t\t\t\t\t\t\t\txhr.onerror = xhr.onabort = xhr.ontimeout =\n\t\t\t\t\t\t\t\t\txhr.onreadystatechange = null;\n\n\t\t\t\t\t\t\tif ( type === \"abort\" ) {\n\t\t\t\t\t\t\t\txhr.abort();\n\t\t\t\t\t\t\t} else if ( type === \"error\" ) {\n\n\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t// On a manual native abort, IE9 throws\n\t\t\t\t\t\t\t\t// errors on any property access that is not readyState\n\t\t\t\t\t\t\t\tif ( typeof xhr.status !== \"number\" ) {\n\t\t\t\t\t\t\t\t\tcomplete( 0, \"error\" );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tcomplete(\n\n\t\t\t\t\t\t\t\t\t\t// File: protocol always yields status 0; see trac-8605, trac-14207\n\t\t\t\t\t\t\t\t\t\txhr.status,\n\t\t\t\t\t\t\t\t\t\txhr.statusText\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tcomplete(\n\t\t\t\t\t\t\t\t\txhrSuccessStatus[ xhr.status ] || xhr.status,\n\t\t\t\t\t\t\t\t\txhr.statusText,\n\n\t\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t\t// IE9 has no XHR2 but throws on binary (trac-11426)\n\t\t\t\t\t\t\t\t\t// For XHR2 non-text, let the caller handle it (gh-2498)\n\t\t\t\t\t\t\t\t\t( xhr.responseType || \"text\" ) !== \"text\"  ||\n\t\t\t\t\t\t\t\t\ttypeof xhr.responseText !== \"string\" ?\n\t\t\t\t\t\t\t\t\t\t{ binary: xhr.response } :\n\t\t\t\t\t\t\t\t\t\t{ text: xhr.responseText },\n\t\t\t\t\t\t\t\t\txhr.getAllResponseHeaders()\n\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t};\n\n\t\t\t\t// Listen to events\n\t\t\t\txhr.onload = callback();\n\t\t\t\terrorCallback = xhr.onerror = xhr.ontimeout = callback( \"error\" );\n\n\t\t\t\t// Support: IE 9 only\n\t\t\t\t// Use onreadystatechange to replace onabort\n\t\t\t\t// to handle uncaught aborts\n\t\t\t\tif ( xhr.onabort !== undefined ) {\n\t\t\t\t\txhr.onabort = errorCallback;\n\t\t\t\t} else {\n\t\t\t\t\txhr.onreadystatechange = function() {\n\n\t\t\t\t\t\t// Check readyState before timeout as it changes\n\t\t\t\t\t\tif ( xhr.readyState === 4 ) {\n\n\t\t\t\t\t\t\t// Allow onerror to be called first,\n\t\t\t\t\t\t\t// but that will not handle a native abort\n\t\t\t\t\t\t\t// Also, save errorCallback to a variable\n\t\t\t\t\t\t\t// as xhr.onerror cannot be accessed\n\t\t\t\t\t\t\twindow.setTimeout( function() {\n\t\t\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\t\t\terrorCallback();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t}\n\n\t\t\t\t// Create the abort callback\n\t\t\t\tcallback = callback( \"abort\" );\n\n\t\t\t\ttry {\n\n\t\t\t\t\t// Do send the request (this may raise an exception)\n\t\t\t\t\txhr.send( options.hasContent && options.data || null );\n\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t// trac-14683: Only rethrow if this hasn't been notified as an error yet\n\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\tthrow e;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t},\n\n\t\t\tabort: function() {\n\t\t\t\tif ( callback ) {\n\t\t\t\t\tcallback();\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n} );\n\n\n\n\n// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)\njQuery.ajaxPrefilter( function( s ) {\n\tif ( s.crossDomain ) {\n\t\ts.contents.script = false;\n\t}\n} );\n\n// Install script dataType\njQuery.ajaxSetup( {\n\taccepts: {\n\t\tscript: \"text/javascript, application/javascript, \" +\n\t\t\t\"application/ecmascript, application/x-ecmascript\"\n\t},\n\tcontents: {\n\t\tscript: /\\b(?:java|ecma)script\\b/\n\t},\n\tconverters: {\n\t\t\"text script\": function( text ) {\n\t\t\tjQuery.globalEval( text );\n\t\t\treturn text;\n\t\t}\n\t}\n} );\n\n// Handle cache's special case and crossDomain\njQuery.ajaxPrefilter( \"script\", function( s ) {\n\tif ( s.cache === undefined ) {\n\t\ts.cache = false;\n\t}\n\tif ( s.crossDomain ) {\n\t\ts.type = \"GET\";\n\t}\n} );\n\n// Bind script tag hack transport\njQuery.ajaxTransport( \"script\", function( s ) {\n\n\t// This transport only deals with cross domain or forced-by-attrs requests\n\tif ( s.crossDomain || s.scriptAttrs ) {\n\t\tvar script, callback;\n\t\treturn {\n\t\t\tsend: function( _, complete ) {\n\t\t\t\tscript = jQuery( \"<script>\" )\n\t\t\t\t\t.attr( s.scriptAttrs || {} )\n\t\t\t\t\t.prop( { charset: s.scriptCharset, src: s.url } )\n\t\t\t\t\t.on( \"load error\", callback = function( evt ) {\n\t\t\t\t\t\tscript.remove();\n\t\t\t\t\t\tcallback = null;\n\t\t\t\t\t\tif ( evt ) {\n\t\t\t\t\t\t\tcomplete( evt.type === \"error\" ? 404 : 200, evt.type );\n\t\t\t\t\t\t}\n\t\t\t\t\t} );\n\n\t\t\t\t// Use native DOM manipulation to avoid our domManip AJAX trickery\n\t\t\t\tdocument.head.appendChild( script[ 0 ] );\n\t\t\t},\n\t\t\tabort: function() {\n\t\t\t\tif ( callback ) {\n\t\t\t\t\tcallback();\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n} );\n\n\n\n\nvar oldCallbacks = [],\n\trjsonp = /(=)\\?(?=&|$)|\\?\\?/;\n\n// Default jsonp settings\njQuery.ajaxSetup( {\n\tjsonp: \"callback\",\n\tjsonpCallback: function() {\n\t\tvar callback = oldCallbacks.pop() || ( jQuery.expando + \"_\" + ( nonce.guid++ ) );\n\t\tthis[ callback ] = true;\n\t\treturn callback;\n\t}\n} );\n\n// Detect, normalize options and install callbacks for jsonp requests\njQuery.ajaxPrefilter( \"json jsonp\", function( s, originalSettings, jqXHR ) {\n\n\tvar callbackName, overwritten, responseContainer,\n\t\tjsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?\n\t\t\t\"url\" :\n\t\t\ttypeof s.data === \"string\" &&\n\t\t\t\t( s.contentType || \"\" )\n\t\t\t\t\t.indexOf( \"application/x-www-form-urlencoded\" ) === 0 &&\n\t\t\t\trjsonp.test( s.data ) && \"data\"\n\t\t);\n\n\t// Handle iff the expected data type is \"jsonp\" or we have a parameter to set\n\tif ( jsonProp || s.dataTypes[ 0 ] === \"jsonp\" ) {\n\n\t\t// Get callback name, remembering preexisting value associated with it\n\t\tcallbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ?\n\t\t\ts.jsonpCallback() :\n\t\t\ts.jsonpCallback;\n\n\t\t// Insert callback into url or form data\n\t\tif ( jsonProp ) {\n\t\t\ts[ jsonProp ] = s[ jsonProp ].replace( rjsonp, \"$1\" + callbackName );\n\t\t} else if ( s.jsonp !== false ) {\n\t\t\ts.url += ( rquery.test( s.url ) ? \"&\" : \"?\" ) + s.jsonp + \"=\" + callbackName;\n\t\t}\n\n\t\t// Use data converter to retrieve json after script execution\n\t\ts.converters[ \"script json\" ] = function() {\n\t\t\tif ( !responseContainer ) {\n\t\t\t\tjQuery.error( callbackName + \" was not called\" );\n\t\t\t}\n\t\t\treturn responseContainer[ 0 ];\n\t\t};\n\n\t\t// Force json dataType\n\t\ts.dataTypes[ 0 ] = \"json\";\n\n\t\t// Install callback\n\t\toverwritten = window[ callbackName ];\n\t\twindow[ callbackName ] = function() {\n\t\t\tresponseContainer = arguments;\n\t\t};\n\n\t\t// Clean-up function (fires after converters)\n\t\tjqXHR.always( function() {\n\n\t\t\t// If previous value didn't exist - remove it\n\t\t\tif ( overwritten === undefined ) {\n\t\t\t\tjQuery( window ).removeProp( callbackName );\n\n\t\t\t// Otherwise restore preexisting value\n\t\t\t} else {\n\t\t\t\twindow[ callbackName ] = overwritten;\n\t\t\t}\n\n\t\t\t// Save back as free\n\t\t\tif ( s[ callbackName ] ) {\n\n\t\t\t\t// Make sure that re-using the options doesn't screw things around\n\t\t\t\ts.jsonpCallback = originalSettings.jsonpCallback;\n\n\t\t\t\t// Save the callback name for future use\n\t\t\t\toldCallbacks.push( callbackName );\n\t\t\t}\n\n\t\t\t// Call if it was a function and we have a response\n\t\t\tif ( responseContainer && isFunction( overwritten ) ) {\n\t\t\t\toverwritten( responseContainer[ 0 ] );\n\t\t\t}\n\n\t\t\tresponseContainer = overwritten = undefined;\n\t\t} );\n\n\t\t// Delegate to script\n\t\treturn \"script\";\n\t}\n} );\n\n\n\n\n// Support: Safari 8 only\n// In Safari 8 documents created via document.implementation.createHTMLDocument\n// collapse sibling forms: the second one becomes a child of the first one.\n// Because of that, this security measure has to be disabled in Safari 8.\n// https://bugs.webkit.org/show_bug.cgi?id=137337\nsupport.createHTMLDocument = ( function() {\n\tvar body = document.implementation.createHTMLDocument( \"\" ).body;\n\tbody.innerHTML = \"<form></form><form></form>\";\n\treturn body.childNodes.length === 2;\n} )();\n\n\n// Argument \"data\" should be string of html\n// context (optional): If specified, the fragment will be created in this context,\n// defaults to document\n// keepScripts (optional): If true, will include scripts passed in the html string\njQuery.parseHTML = function( data, context, keepScripts ) {\n\tif ( typeof data !== \"string\" ) {\n\t\treturn [];\n\t}\n\tif ( typeof context === \"boolean\" ) {\n\t\tkeepScripts = context;\n\t\tcontext = false;\n\t}\n\n\tvar base, parsed, scripts;\n\n\tif ( !context ) {\n\n\t\t// Stop scripts or inline event handlers from being executed immediately\n\t\t// by using document.implementation\n\t\tif ( support.createHTMLDocument ) {\n\t\t\tcontext = document.implementation.createHTMLDocument( \"\" );\n\n\t\t\t// Set the base href for the created document\n\t\t\t// so any parsed elements with URLs\n\t\t\t// are based on the document's URL (gh-2965)\n\t\t\tbase = context.createElement( \"base\" );\n\t\t\tbase.href = document.location.href;\n\t\t\tcontext.head.appendChild( base );\n\t\t} else {\n\t\t\tcontext = document;\n\t\t}\n\t}\n\n\tparsed = rsingleTag.exec( data );\n\tscripts = !keepScripts && [];\n\n\t// Single tag\n\tif ( parsed ) {\n\t\treturn [ context.createElement( parsed[ 1 ] ) ];\n\t}\n\n\tparsed = buildFragment( [ data ], context, scripts );\n\n\tif ( scripts && scripts.length ) {\n\t\tjQuery( scripts ).remove();\n\t}\n\n\treturn jQuery.merge( [], parsed.childNodes );\n};\n\n\n/**\n * Load a url into a page\n */\njQuery.fn.load = function( url, params, callback ) {\n\tvar selector, type, response,\n\t\tself = this,\n\t\toff = url.indexOf( \" \" );\n\n\tif ( off > -1 ) {\n\t\tselector = stripAndCollapse( url.slice( off ) );\n\t\turl = url.slice( 0, off );\n\t}\n\n\t// If it's a function\n\tif ( isFunction( params ) ) {\n\n\t\t// We assume that it's the callback\n\t\tcallback = params;\n\t\tparams = undefined;\n\n\t// Otherwise, build a param string\n\t} else if ( params && typeof params === \"object\" ) {\n\t\ttype = \"POST\";\n\t}\n\n\t// If we have elements to modify, make the request\n\tif ( self.length > 0 ) {\n\t\tjQuery.ajax( {\n\t\t\turl: url,\n\n\t\t\t// If \"type\" variable is undefined, then \"GET\" method will be used.\n\t\t\t// Make value of this field explicit since\n\t\t\t// user can override it through ajaxSetup method\n\t\t\ttype: type || \"GET\",\n\t\t\tdataType: \"html\",\n\t\t\tdata: params\n\t\t} ).done( function( responseText ) {\n\n\t\t\t// Save response for use in complete callback\n\t\t\tresponse = arguments;\n\n\t\t\tself.html( selector ?\n\n\t\t\t\t// If a selector was specified, locate the right elements in a dummy div\n\t\t\t\t// Exclude scripts to avoid IE 'Permission Denied' errors\n\t\t\t\tjQuery( \"<div>\" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :\n\n\t\t\t\t// Otherwise use the full result\n\t\t\t\tresponseText );\n\n\t\t// If the request succeeds, this function gets \"data\", \"status\", \"jqXHR\"\n\t\t// but they are ignored because response was set above.\n\t\t// If it fails, this function gets \"jqXHR\", \"status\", \"error\"\n\t\t} ).always( callback && function( jqXHR, status ) {\n\t\t\tself.each( function() {\n\t\t\t\tcallback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );\n\t\t\t} );\n\t\t} );\n\t}\n\n\treturn this;\n};\n\n\n\n\njQuery.expr.pseudos.animated = function( elem ) {\n\treturn jQuery.grep( jQuery.timers, function( fn ) {\n\t\treturn elem === fn.elem;\n\t} ).length;\n};\n\n\n\n\njQuery.offset = {\n\tsetOffset: function( elem, options, i ) {\n\t\tvar curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,\n\t\t\tposition = jQuery.css( elem, \"position\" ),\n\t\t\tcurElem = jQuery( elem ),\n\t\t\tprops = {};\n\n\t\t// Set position first, in-case top/left are set even on static elem\n\t\tif ( position === \"static\" ) {\n\t\t\telem.style.position = \"relative\";\n\t\t}\n\n\t\tcurOffset = curElem.offset();\n\t\tcurCSSTop = jQuery.css( elem, \"top\" );\n\t\tcurCSSLeft = jQuery.css( elem, \"left\" );\n\t\tcalculatePosition = ( position === \"absolute\" || position === \"fixed\" ) &&\n\t\t\t( curCSSTop + curCSSLeft ).indexOf( \"auto\" ) > -1;\n\n\t\t// Need to be able to calculate position if either\n\t\t// top or left is auto and position is either absolute or fixed\n\t\tif ( calculatePosition ) {\n\t\t\tcurPosition = curElem.position();\n\t\t\tcurTop = curPosition.top;\n\t\t\tcurLeft = curPosition.left;\n\n\t\t} else {\n\t\t\tcurTop = parseFloat( curCSSTop ) || 0;\n\t\t\tcurLeft = parseFloat( curCSSLeft ) || 0;\n\t\t}\n\n\t\tif ( isFunction( options ) ) {\n\n\t\t\t// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)\n\t\t\toptions = options.call( elem, i, jQuery.extend( {}, curOffset ) );\n\t\t}\n\n\t\tif ( options.top != null ) {\n\t\t\tprops.top = ( options.top - curOffset.top ) + curTop;\n\t\t}\n\t\tif ( options.left != null ) {\n\t\t\tprops.left = ( options.left - curOffset.left ) + curLeft;\n\t\t}\n\n\t\tif ( \"using\" in options ) {\n\t\t\toptions.using.call( elem, props );\n\n\t\t} else {\n\t\t\tcurElem.css( props );\n\t\t}\n\t}\n};\n\njQuery.fn.extend( {\n\n\t// offset() relates an element's border box to the document origin\n\toffset: function( options ) {\n\n\t\t// Preserve chaining for setter\n\t\tif ( arguments.length ) {\n\t\t\treturn options === undefined ?\n\t\t\t\tthis :\n\t\t\t\tthis.each( function( i ) {\n\t\t\t\t\tjQuery.offset.setOffset( this, options, i );\n\t\t\t\t} );\n\t\t}\n\n\t\tvar rect, win,\n\t\t\telem = this[ 0 ];\n\n\t\tif ( !elem ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n\t\t// Support: IE <=11 only\n\t\t// Running getBoundingClientRect on a\n\t\t// disconnected node in IE throws an error\n\t\tif ( !elem.getClientRects().length ) {\n\t\t\treturn { top: 0, left: 0 };\n\t\t}\n\n\t\t// Get document-relative position by adding viewport scroll to viewport-relative gBCR\n\t\trect = elem.getBoundingClientRect();\n\t\twin = elem.ownerDocument.defaultView;\n\t\treturn {\n\t\t\ttop: rect.top + win.pageYOffset,\n\t\t\tleft: rect.left + win.pageXOffset\n\t\t};\n\t},\n\n\t// position() relates an element's margin box to its offset parent's padding box\n\t// This corresponds to the behavior of CSS absolute positioning\n\tposition: function() {\n\t\tif ( !this[ 0 ] ) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar offsetParent, offset, doc,\n\t\t\telem = this[ 0 ],\n\t\t\tparentOffset = { top: 0, left: 0 };\n\n\t\t// position:fixed elements are offset from the viewport, which itself always has zero offset\n\t\tif ( jQuery.css( elem, \"position\" ) === \"fixed\" ) {\n\n\t\t\t// Assume position:fixed implies availability of getBoundingClientRect\n\t\t\toffset = elem.getBoundingClientRect();\n\n\t\t} else {\n\t\t\toffset = this.offset();\n\n\t\t\t// Account for the *real* offset parent, which can be the document or its root element\n\t\t\t// when a statically positioned element is identified\n\t\t\tdoc = elem.ownerDocument;\n\t\t\toffsetParent = elem.offsetParent || doc.documentElement;\n\t\t\twhile ( offsetParent &&\n\t\t\t\t( offsetParent === doc.body || offsetParent === doc.documentElement ) &&\n\t\t\t\tjQuery.css( offsetParent, \"position\" ) === \"static\" ) {\n\n\t\t\t\toffsetParent = offsetParent.parentNode;\n\t\t\t}\n\t\t\tif ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) {\n\n\t\t\t\t// Incorporate borders into its offset, since they are outside its content origin\n\t\t\t\tparentOffset = jQuery( offsetParent ).offset();\n\t\t\t\tparentOffset.top += jQuery.css( offsetParent, \"borderTopWidth\", true );\n\t\t\t\tparentOffset.left += jQuery.css( offsetParent, \"borderLeftWidth\", true );\n\t\t\t}\n\t\t}\n\n\t\t// Subtract parent offsets and element margins\n\t\treturn {\n\t\t\ttop: offset.top - parentOffset.top - jQuery.css( elem, \"marginTop\", true ),\n\t\t\tleft: offset.left - parentOffset.left - jQuery.css( elem, \"marginLeft\", true )\n\t\t};\n\t},\n\n\t// This method will return documentElement in the following cases:\n\t// 1) For the element inside the iframe without offsetParent, this method will return\n\t//    documentElement of the parent window\n\t// 2) For the hidden or detached element\n\t// 3) For body or html element, i.e. in case of the html node - it will return itself\n\t//\n\t// but those exceptions were never presented as a real life use-cases\n\t// and might be considered as more preferable results.\n\t//\n\t// This logic, however, is not guaranteed and can change at any point in the future\n\toffsetParent: function() {\n\t\treturn this.map( function() {\n\t\t\tvar offsetParent = this.offsetParent;\n\n\t\t\twhile ( offsetParent && jQuery.css( offsetParent, \"position\" ) === \"static\" ) {\n\t\t\t\toffsetParent = offsetParent.offsetParent;\n\t\t\t}\n\n\t\t\treturn offsetParent || documentElement;\n\t\t} );\n\t}\n} );\n\n// Create scrollLeft and scrollTop methods\njQuery.each( { scrollLeft: \"pageXOffset\", scrollTop: \"pageYOffset\" }, function( method, prop ) {\n\tvar top = \"pageYOffset\" === prop;\n\n\tjQuery.fn[ method ] = function( val ) {\n\t\treturn access( this, function( elem, method, val ) {\n\n\t\t\t// Coalesce documents and windows\n\t\t\tvar win;\n\t\t\tif ( isWindow( elem ) ) {\n\t\t\t\twin = elem;\n\t\t\t} else if ( elem.nodeType === 9 ) {\n\t\t\t\twin = elem.defaultView;\n\t\t\t}\n\n\t\t\tif ( val === undefined ) {\n\t\t\t\treturn win ? win[ prop ] : elem[ method ];\n\t\t\t}\n\n\t\t\tif ( win ) {\n\t\t\t\twin.scrollTo(\n\t\t\t\t\t!top ? val : win.pageXOffset,\n\t\t\t\t\ttop ? val : win.pageYOffset\n\t\t\t\t);\n\n\t\t\t} else {\n\t\t\t\telem[ method ] = val;\n\t\t\t}\n\t\t}, method, val, arguments.length );\n\t};\n} );\n\n// Support: Safari <=7 - 9.1, Chrome <=37 - 49\n// Add the top/left cssHooks using jQuery.fn.position\n// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084\n// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347\n// getComputedStyle returns percent when specified for top/left/bottom/right;\n// rather than make the css module depend on the offset module, just check for it here\njQuery.each( [ \"top\", \"left\" ], function( _i, prop ) {\n\tjQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,\n\t\tfunction( elem, computed ) {\n\t\t\tif ( computed ) {\n\t\t\t\tcomputed = curCSS( elem, prop );\n\n\t\t\t\t// If curCSS returns percentage, fallback to offset\n\t\t\t\treturn rnumnonpx.test( computed ) ?\n\t\t\t\t\tjQuery( elem ).position()[ prop ] + \"px\" :\n\t\t\t\t\tcomputed;\n\t\t\t}\n\t\t}\n\t);\n} );\n\n\n// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods\njQuery.each( { Height: \"height\", Width: \"width\" }, function( name, type ) {\n\tjQuery.each( {\n\t\tpadding: \"inner\" + name,\n\t\tcontent: type,\n\t\t\"\": \"outer\" + name\n\t}, function( defaultExtra, funcName ) {\n\n\t\t// Margin is only for outerHeight, outerWidth\n\t\tjQuery.fn[ funcName ] = function( margin, value ) {\n\t\t\tvar chainable = arguments.length && ( defaultExtra || typeof margin !== \"boolean\" ),\n\t\t\t\textra = defaultExtra || ( margin === true || value === true ? \"margin\" : \"border\" );\n\n\t\t\treturn access( this, function( elem, type, value ) {\n\t\t\t\tvar doc;\n\n\t\t\t\tif ( isWindow( elem ) ) {\n\n\t\t\t\t\t// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)\n\t\t\t\t\treturn funcName.indexOf( \"outer\" ) === 0 ?\n\t\t\t\t\t\telem[ \"inner\" + name ] :\n\t\t\t\t\t\telem.document.documentElement[ \"client\" + name ];\n\t\t\t\t}\n\n\t\t\t\t// Get document width or height\n\t\t\t\tif ( elem.nodeType === 9 ) {\n\t\t\t\t\tdoc = elem.documentElement;\n\n\t\t\t\t\t// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],\n\t\t\t\t\t// whichever is greatest\n\t\t\t\t\treturn Math.max(\n\t\t\t\t\t\telem.body[ \"scroll\" + name ], doc[ \"scroll\" + name ],\n\t\t\t\t\t\telem.body[ \"offset\" + name ], doc[ \"offset\" + name ],\n\t\t\t\t\t\tdoc[ \"client\" + name ]\n\t\t\t\t\t);\n\t\t\t\t}\n\n\t\t\t\treturn value === undefined ?\n\n\t\t\t\t\t// Get width or height on the element, requesting but not forcing parseFloat\n\t\t\t\t\tjQuery.css( elem, type, extra ) :\n\n\t\t\t\t\t// Set width or height on the element\n\t\t\t\t\tjQuery.style( elem, type, value, extra );\n\t\t\t}, type, chainable ? margin : undefined, chainable );\n\t\t};\n\t} );\n} );\n\n\njQuery.each( [\n\t\"ajaxStart\",\n\t\"ajaxStop\",\n\t\"ajaxComplete\",\n\t\"ajaxError\",\n\t\"ajaxSuccess\",\n\t\"ajaxSend\"\n], function( _i, type ) {\n\tjQuery.fn[ type ] = function( fn ) {\n\t\treturn this.on( type, fn );\n\t};\n} );\n\n\n\n\njQuery.fn.extend( {\n\n\tbind: function( types, data, fn ) {\n\t\treturn this.on( types, null, data, fn );\n\t},\n\tunbind: function( types, fn ) {\n\t\treturn this.off( types, null, fn );\n\t},\n\n\tdelegate: function( selector, types, data, fn ) {\n\t\treturn this.on( types, selector, data, fn );\n\t},\n\tundelegate: function( selector, types, fn ) {\n\n\t\t// ( namespace ) or ( selector, types [, fn] )\n\t\treturn arguments.length === 1 ?\n\t\t\tthis.off( selector, \"**\" ) :\n\t\t\tthis.off( types, selector || \"**\", fn );\n\t},\n\n\thover: function( fnOver, fnOut ) {\n\t\treturn this\n\t\t\t.on( \"mouseenter\", fnOver )\n\t\t\t.on( \"mouseleave\", fnOut || fnOver );\n\t}\n} );\n\njQuery.each(\n\t( \"blur focus focusin focusout resize scroll click dblclick \" +\n\t\"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave \" +\n\t\"change select submit keydown keypress keyup contextmenu\" ).split( \" \" ),\n\tfunction( _i, name ) {\n\n\t\t// Handle event binding\n\t\tjQuery.fn[ name ] = function( data, fn ) {\n\t\t\treturn arguments.length > 0 ?\n\t\t\t\tthis.on( name, null, data, fn ) :\n\t\t\t\tthis.trigger( name );\n\t\t};\n\t}\n);\n\n\n\n\n// Support: Android <=4.0 only\n// Make sure we trim BOM and NBSP\n// Require that the \"whitespace run\" starts from a non-whitespace\n// to avoid O(N^2) behavior when the engine would try matching \"\\s+$\" at each space position.\nvar rtrim = /^[\\s\\uFEFF\\xA0]+|([^\\s\\uFEFF\\xA0])[\\s\\uFEFF\\xA0]+$/g;\n\n// Bind a function to a context, optionally partially applying any\n// arguments.\n// jQuery.proxy is deprecated to promote standards (specifically Function#bind)\n// However, it is not slated for removal any time soon\njQuery.proxy = function( fn, context ) {\n\tvar tmp, args, proxy;\n\n\tif ( typeof context === \"string\" ) {\n\t\ttmp = fn[ context ];\n\t\tcontext = fn;\n\t\tfn = tmp;\n\t}\n\n\t// Quick check to determine if target is callable, in the spec\n\t// this throws a TypeError, but we will just return undefined.\n\tif ( !isFunction( fn ) ) {\n\t\treturn undefined;\n\t}\n\n\t// Simulated bind\n\targs = slice.call( arguments, 2 );\n\tproxy = function() {\n\t\treturn fn.apply( context || this, args.concat( slice.call( arguments ) ) );\n\t};\n\n\t// Set the guid of unique handler to the same of original handler, so it can be removed\n\tproxy.guid = fn.guid = fn.guid || jQuery.guid++;\n\n\treturn proxy;\n};\n\njQuery.holdReady = function( hold ) {\n\tif ( hold ) {\n\t\tjQuery.readyWait++;\n\t} else {\n\t\tjQuery.ready( true );\n\t}\n};\njQuery.isArray = Array.isArray;\njQuery.parseJSON = JSON.parse;\njQuery.nodeName = nodeName;\njQuery.isFunction = isFunction;\njQuery.isWindow = isWindow;\njQuery.camelCase = camelCase;\njQuery.type = toType;\n\njQuery.now = Date.now;\n\njQuery.isNumeric = function( obj ) {\n\n\t// As of jQuery 3.0, isNumeric is limited to\n\t// strings and numbers (primitives or objects)\n\t// that can be coerced to finite numbers (gh-2662)\n\tvar type = jQuery.type( obj );\n\treturn ( type === \"number\" || type === \"string\" ) &&\n\n\t\t// parseFloat NaNs numeric-cast false positives (\"\")\n\t\t// ...but misinterprets leading-number strings, particularly hex literals (\"0x...\")\n\t\t// subtraction forces infinities to NaN\n\t\t!isNaN( obj - parseFloat( obj ) );\n};\n\njQuery.trim = function( text ) {\n\treturn text == null ?\n\t\t\"\" :\n\t\t( text + \"\" ).replace( rtrim, \"$1\" );\n};\n\n\n\n// Register as a named AMD module, since jQuery can be concatenated with other\n// files that may use define, but not via a proper concatenation script that\n// understands anonymous AMD modules. A named AMD is safest and most robust\n// way to register. Lowercase jquery is used because AMD module names are\n// derived from file names, and jQuery is normally delivered in a lowercase\n// file name. Do this after creating the global so that if an AMD module wants\n// to call noConflict to hide this version of jQuery, it will work.\n\n// Note that for maximum portability, libraries that are not jQuery should\n// declare themselves as anonymous modules, and avoid setting a global if an\n// AMD loader is present. jQuery is a special case. For more information, see\n// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon\n\nif ( typeof define === \"function\" && define.amd ) {\n\tdefine( \"jquery\", [], function() {\n\t\treturn jQuery;\n\t} );\n}\n\n\n\n\nvar\n\n\t// Map over jQuery in case of overwrite\n\t_jQuery = window.jQuery,\n\n\t// Map over the $ in case of overwrite\n\t_$ = window.$;\n\njQuery.noConflict = function( deep ) {\n\tif ( window.$ === jQuery ) {\n\t\twindow.$ = _$;\n\t}\n\n\tif ( deep && window.jQuery === jQuery ) {\n\t\twindow.jQuery = _jQuery;\n\t}\n\n\treturn jQuery;\n};\n\n// Expose jQuery and $ identifiers, even in AMD\n// (trac-7102#comment:10, https://github.com/jquery/jquery/pull/557)\n// and CommonJS for browser emulators (trac-13566)\nif ( typeof noGlobal === \"undefined\" ) {\n\twindow.jQuery = window.$ = jQuery;\n}\n\n\n\n\nreturn jQuery;\n} );\n","/**\n * {@link Session} state.\n *\n * @remarks\n * The {@link Session} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   ___________________________________________________________\n *                  |  ____________________________________________             |\n *                  | |            ____________________________    |            |\n * Session          | |           |                            v   v            v\n * Constructed -> Initial -> Establishing -> Established -> Terminating -> Terminated\n *                                |               |___________________________^   ^\n *                                |_______________________________________________|\n * ```\n * @public\n */\nexport var SessionState;\n(function (SessionState) {\n    /**\n     * If `Inviter`, INVITE not sent yet.\n     * If `Invitation`, received INVITE (but no final response sent yet).\n     */\n    SessionState[\"Initial\"] = \"Initial\";\n    /**\n     * If `Inviter`, sent INVITE and waiting for a final response.\n     * If `Invitation`, received INVITE and attempting to send 200 final response (but has not sent it yet).\n     */\n    SessionState[\"Establishing\"] = \"Establishing\";\n    /**\n     * If `Inviter`, sent INVITE and received 200 final response and sent ACK.\n     * If `Invitation`, received INVITE and sent 200 final response.\n     */\n    SessionState[\"Established\"] = \"Established\";\n    /**\n     * If `Inviter`, sent INVITE, sent CANCEL and now waiting for 487 final response to ACK (or 200 to ACK & BYE).\n     * If `Invitation`, received INVITE, sent 200 final response and now waiting on ACK and upon receipt will attempt BYE\n     * (as the protocol specification requires, before sending a BYE we must receive the ACK - so we are waiting).\n     */\n    SessionState[\"Terminating\"] = \"Terminating\";\n    /**\n     * If `Inviter`, sent INVITE and received non-200 final response (or sent/received BYE after receiving 200).\n     * If `Invitation`, received INVITE and sent non-200 final response (or sent/received BYE after sending 200).\n     */\n    SessionState[\"Terminated\"] = \"Terminated\";\n})(SessionState = SessionState || (SessionState = {}));\n","import { Levels as LogLevels } from 'sip.js/lib/core/log/levels';\nimport type { LogLevel } from 'sip.js/lib/api/user-agent-options';\nimport type {\n  SessionDescriptionHandlerModifier,\n  UserAgentOptions,\n  LogConnector,\n  SessionDescriptionHandlerFactory,\n} from 'sip.js';\nimport { UserAgent, Web } from 'sip.js';\n\nimport type { WebPhoneUserAgent } from './userAgent';\nimport { createWebPhoneUserAgent } from './userAgent';\nimport { default as MediaStreams, MediaStreamsImpl } from './mediaStreams';\nimport { uuid, extend } from './utils';\nimport {\n  uuidKey,\n  defaultMediaConstraints,\n  defaultLogLevel,\n  defaultSipErrorCodes,\n  defaultStunServers,\n} from './constants';\nimport type { WebPhoneSession } from './session';\nimport type { WebPhoneSessionDescriptionHandlerFactoryOptions } from './sessionDescriptionHandler';\nimport { defaultSessionDescriptionFactory } from './sessionDescriptionHandler';\nimport type { AudioHelperOptions } from './audioHelper';\n\nimport pkg from '../package.json';\n\nconst version = pkg.version;\n\nexport interface TransportServer {\n  uri: string;\n  isError?: boolean;\n}\n\nexport interface WebPhoneRegistrationData {\n  /** Sip Info received after registering device with RingCentral */\n  sipInfo?: Array<SipInfo> | SipInfo;\n  /** Sip error codes */\n  sipErrorCodes?: string[];\n}\n\nexport interface SipInfo {\n  /** Username to connect to transport */\n  username: string;\n  /** Password to connect to transport */\n  password: string;\n  /** Authorization Id to connect to transport */\n  authorizationId: string;\n  /** Domain of transport server */\n  domain: string;\n  /** URL for outbound transport proxy */\n  outboundProxy: string;\n  /** V6 IP address for outbound transport proxy */\n  outboundProxyIPv6?: string;\n  /** URL for outbound backup transport proxy */\n  outboundProxyBackup: string;\n  /** V6 IP address for outbound backup transport proxy */\n  outboundProxyIPv6Backup?: string;\n  /** Transport type */\n  transport: 'UDP' | 'TCP' | 'TLS' | 'WS' | 'WSS';\n  /** Certificate to connect to transport */\n  certificate: string;\n  /** The interval in seconds after which the app must try to switch back to primary proxy if it was previously switched to backup */\n  switchBackInterval: number;\n}\n\nexport interface WebPhoneOptions {\n  /** Client ID of the RingCentral Developer app */\n  clientId?: string;\n  /** Name used in user agent string */\n  appName?: string;\n  /** Version used in user agent string */\n  appVersion?: string;\n  /**\n   * @internal\n   * Helper class to load incoming and outgoing audio. The library already comes with an implementation of this class\n   *\n   * Can be overridden but the custom class should have `loadAudio`, `setVolume`, `playIncoming` and `playOutgoing` methods\n   */\n  audioHelper?: AudioHelperOptions;\n  /** If `true`, user agent calls the stop() method on unload (if running in browser window).\n   *\n   * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.useragentoptions.autostop.md)\n   *\n   * default value `true`\n   */\n  autoStop?: boolean;\n  /** If `true` log messages should be written to the browser console.\n   *\n   * default value `true`\n   */\n  builtinEnabled?: boolean;\n  /** A function which will be called every time a log is generated. [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.logconnector.md) */\n  connector?: LogConnector;\n  /** Default headers to add to SIP messages */\n  defaultHeaders?: string[];\n  /** If `true` media will be sent prior to call being answered\n   *\n   * Set to `true` by default for firefox browser\n   *\n   * default value `false`\n   */\n  earlyMedia?: boolean;\n  /** If `true`, `stripG722` and `stripTcpCandidates` modifiers will be enabled in SessionDescriptionHandler\n   *\n   * default value `true`\n   */\n  enableDefaultModifiers?: boolean;\n  /** If `true`, dscp is enabled for senders track in peer connection\n   *\n   * default value `false`\n   */\n  enableDscp?: boolean;\n  /** If `true`, media report is logged using logger */\n  enableMediaReportLogging?: boolean;\n  /** is `true`, `addMidLines` modifiers will be enabled in SessionDescriptionHandler */\n  enableMidLinesInSDP?: boolean;\n  /** Use SDP format instead of standards conformant format\n   *\n   * https://chromestatus.com/feature/5723303167655936\n   */\n  enablePlanB?: boolean;\n  /** If `true`, QOS data will be collected when session starts */\n  enableQos?: boolean;\n  /** If `true`, turn servers passed with configuration will be used when generating ice candidates */\n  enableTurnServers?: boolean;\n  /** Max time in milliseconds to be considered when generating ice candidates\n   *\n   * default value `2000` when `enableTurnServers` is `true`, otherwise `500`\n   */\n  iceCheckingTimeout?: number;\n  /** Policy used when generating ice candidates\n   *\n   * default value `all`\n   */\n  iceTransportPolicy?: RTCIceTransportPolicy;\n  /** UUID to provide with \"+sip.instance\" Contact parameter. */\n  instanceId?: string;\n  /** Time in seconds to debounce sending CLRF keepAlive sequences by\n   *\n   * default value `10`\n   */\n  keepAliveDebounce?: number;\n  /** Time in seconds to wait in between CLRF keepAlive sequences are sent\n   *\n   * default value `0`\n   */\n  keepAliveInterval?: number;\n  /** Indicates the verbosity level of the log messages.\n   *\n   * 0 = Error\n   * 1 = Warn\n   * 2 = Log\n   * 3 = Debug\n   *\n   * default value `0`\n   */\n  logLevel?: 0 | 1 | 2 | 3;\n  /** Max retry attempts used for retrying to connect to outbound proxy when transport is disconnected\n   *\n   * If value is passed, `maxReconnectionAttempts` and `maxReconnectionAttemptsNoBackup` will be ignored\n   *\n   * If value is not passed, retry attempts will be decided using `maxReconnectionAttempts` and `maxReconnectionAttemptsNoBackup` depending on what proxy the transport connects to\n   */\n  maxReconnectionAttempts?: number;\n  /** Max retry attempts used for retrying to connect to outbound proxy when transport is disconnected\n   *\n   * default value `15`\n   */\n  maxReconnectionAttemptsNoBackup?: number;\n  /** Max retry attempts used for retrying to connect to outbound backup proxy when transport is disconnected\n   *\n   * default value `10`\n   */\n  maxReconnectionAttemptsWithBackup?: number;\n  /** local and remote reference to HTML media elements */\n  media?: { local?: HTMLMediaElement; remote?: HTMLMediaElement };\n  /** Constraints used when creating peerConnection\n   *\n   * default value `{ audio: true, video: false }`\n   */\n  mediaConstraints?: { audio: boolean; video: boolean };\n  /** Default modifiers used for SessionDescriptionHandler\n   *\n   * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.sessiondescriptionhandlermodifier.md)\n   */\n  modifiers?: SessionDescriptionHandlerModifier[];\n  /** Callback function called when session is created */\n  onSession?: (session: WebPhoneSession) => void;\n  /** Recurring time interval in seconds after which QOS stats are collected\n   *\n   * default value `5000`\n   */\n  qosCollectInterval?: number;\n  /** Timeout before which reconnection is attempted when transport disconnects\n   *\n   * If value is passed, `reconnectionTimeoutNoBackup` and `reconnectionTimeoutNoBackup` will be ignored\n   *\n   * If value is not passed, reconnection timeout will be decided using `reconnectionTimeoutNoBackup` and `reconnectionTimeoutNoBackup` depending on what proxy the transport connects to\n   */\n  reconnectionTimeout?: number;\n  /** Timeout before which reconnection is attempted when transport disconnects when connected to outbound proxy\n   *\n   * default value `5`\n   */\n  reconnectionTimeoutNoBackup?: number;\n  /** Timeout before which reconnection is attempted when transport disconnects when connected to outbound backup proxy\n   *\n   * default value `4`\n   */\n  reconnectionTimeoutWithBackup?: number;\n  /** Value to provide with \"reg-id\" Contact parameter. when registering */\n  regId?: number;\n  /** Factory for SessionDescriptionHandler.\n   *\n   * The library already uses a default implementation\n   */\n  sessionDescriptionHandlerFactory?: SessionDescriptionHandlerFactory;\n  /** Options for SessionDescriptionHandler\n   *\n   * If a value is passed, options like enableDscp, iceCheckingTimeout, turnServers, stunServers, iceTransportPolicynd enablePlanBre ignored\n   *\n   * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.sessiondescriptionhandleroptions.md)\n   */\n  sessionDescriptionHandlerFactoryOptions?: WebPhoneSessionDescriptionHandlerFactoryOptions;\n  /** Sip error codes. This value is picked from registrationData\n   *\n   * default value `['408', '502', '503', '504']` if registrationData does not have `sipErrorCodes`\n   * @internal\n   */\n  sipErrorCodes?: string[];\n  /** Stun servers used when generating ice candidates\n   *\n   * default value `['stun.l.google.com:19302']`\n   */\n  stunServers?: string[];\n  /** Time in seconds to try connecting back to outbound proxy when transport has connected to backup outbound proxy */\n  switchBackInterval?: number;\n  /**\n   * @internal\n   * Used to store transport server details\n   */\n  transportServers?: TransportServer[];\n  /** Turn servers used when generating ice candidates */\n  turnServers?: string[];\n  /** Unique ID used to make calls to SIP server\n   *\n   * Is generated by the library if not passed\n   */\n  uuid?: string;\n  /** Key that will be used to save uuid in localStorage\n   *\n   * default value is used by the library if not passed\n   *\n   * default value `rc-webPhone-uuid`\n   */\n  uuidKey?: string;\n}\n\nconst defaultWebPhoneOptions: WebPhoneOptions = {\n  autoStop: true,\n  builtinEnabled: true,\n  earlyMedia: false,\n  enableDefaultModifiers: true,\n  enableDscp: false,\n  iceTransportPolicy: 'all',\n  maxReconnectionAttemptsNoBackup: 15,\n  maxReconnectionAttemptsWithBackup: 10,\n  mediaConstraints: defaultMediaConstraints,\n  modifiers: [],\n  // FIXME: This should be in seconds since every other config is in seconds\n  qosCollectInterval: 5000,\n  reconnectionTimeoutNoBackup: 5,\n  reconnectionTimeoutWithBackup: 4,\n  transportServers: [],\n  turnServers: [],\n  uuid: uuid(),\n  uuidKey,\n};\n\n/**\n * WebPhone class to initiate WebRTC calls\n */\nexport default class WebPhone {\n  /** WebPhone version */\n  public static version = version;\n  /** Utility function to generate uuid */\n  public static uuid = uuid;\n  /** Utility function to extend object */\n  public static extend = extend;\n\n  public static MediaStreams = MediaStreams;\n  public static MediaStreamsImpl = MediaStreamsImpl;\n\n  /** Sip Info received from the registration endpoint */\n  public sipInfo: SipInfo;\n  /** Key that will be used to save uuid in localStorage */\n  public uuidKey: string | undefined;\n  /** Name used in user agent string */\n  public appName: string | undefined;\n  /** Version used in user agent string */\n  public appVersion: string | undefined;\n  /** WebPhoneUserAgent instance */\n  public userAgent: WebPhoneUserAgent;\n\n  /**\n   * TODO: include 'WebPhone' for all apps other than Chrome and Glip\n   * TODO: parse wsservers from new api spec\n   */\n  // eslint-disable-next-line complexity\n  public constructor(registrationData: WebPhoneRegistrationData = {}, _options: WebPhoneOptions = {}) {\n    const options = { ...defaultWebPhoneOptions, ..._options };\n\n    this.sipInfo = registrationData.sipInfo as SipInfo;\n    if (Array.isArray(this.sipInfo)) {\n      this.sipInfo = this.sipInfo[0];\n    }\n    this.uuidKey = options.uuidKey;\n    this.appName = options.appName;\n    this.appVersion = options.appVersion;\n\n    const id = options.uuid;\n    localStorage.setItem(this.uuidKey as string, id as string);\n    const uaMatch = navigator.userAgent.match(/\\((.*?)\\)/);\n    const appClientOs = uaMatch === null ? '' : uaMatch[1].replace(/[^a-zA-Z0-9.:_]+/g, '-');\n\n    const userAgentString =\n      (this.appName ? this.appName + (this.appVersion ? '/' + this.appVersion : '') + ' ' : '') +\n      (appClientOs ? appClientOs : '') +\n      ` RCWEBPHONE/${WebPhone.version}`;\n\n    const modifiers = options.modifiers!;\n\n    if (!options.enableDefaultModifiers) {\n      modifiers.push(Web.stripG722);\n      modifiers.push(Web.stripTcpCandidates);\n    }\n\n    if (options.enableMidLinesInSDP) {\n      modifiers.push(Web.addMidLines);\n    }\n\n    const sdpSemantics = options.enablePlanB ? 'plan-b' : 'unified-plan';\n\n    const stunServers = options.stunServers || defaultStunServers;\n    const iceTransportPolicy = options.iceTransportPolicy;\n    let iceServers: Array<RTCIceServer> = [];\n    if (options.enableTurnServers) {\n      iceServers = options.turnServers!.map((url) => ({ urls: url }));\n      options.iceCheckingTimeout = options.iceCheckingTimeout || 2000;\n    }\n    iceServers = [\n      ...iceServers,\n      ...stunServers.map((_url) => {\n        const url = !/^(stun:)/.test(_url) ? `stun:${_url}` : _url;\n        return { urls: url };\n      }),\n    ];\n\n    const sessionDescriptionHandlerFactoryOptions = options.sessionDescriptionHandlerFactoryOptions || {\n      iceGatheringTimeout: options.iceCheckingTimeout || 500,\n      enableDscp: options.enableDscp,\n      peerConnectionConfiguration: {\n        iceServers,\n        iceTransportPolicy,\n        sdpSemantics,\n      },\n    };\n\n    sessionDescriptionHandlerFactoryOptions.enableDscp = !!options.enableDscp;\n\n    options.modifiers = modifiers;\n\n    const browserUa = navigator.userAgent.toLowerCase();\n\n    if (browserUa.includes('firefox') && !browserUa.includes('chrome')) {\n      // FIXME: alwaysAcquireMediaFirst has been removed from SIP.js. Is it the same as earlyMedia?\n      options.earlyMedia = true;\n    }\n\n    const sessionDescriptionHandlerFactory =\n      options.sessionDescriptionHandlerFactory || defaultSessionDescriptionFactory;\n\n    const sipErrorCodes = registrationData.sipErrorCodes?.length\n      ? registrationData.sipErrorCodes\n      : defaultSipErrorCodes;\n\n    let reconnectionTimeout = options.reconnectionTimeoutWithBackup;\n    let maxReconnectionAttempts = options.maxReconnectionAttemptsWithBackup;\n    if (this.sipInfo.outboundProxy && this.sipInfo.transport) {\n      options.transportServers!.push({\n        uri: this.sipInfo.transport.toLowerCase() + '://' + this.sipInfo.outboundProxy,\n      });\n      reconnectionTimeout = options.reconnectionTimeoutNoBackup;\n      maxReconnectionAttempts = options.maxReconnectionAttemptsNoBackup;\n    }\n\n    if (this.sipInfo.outboundProxyBackup && this.sipInfo.transport) {\n      options.transportServers!.push({\n        uri: this.sipInfo.transport.toLowerCase() + '://' + this.sipInfo.outboundProxyBackup,\n      });\n    }\n\n    options.reconnectionTimeout = options.reconnectionTimeout || reconnectionTimeout;\n    options.maxReconnectionAttempts = options.maxReconnectionAttempts || maxReconnectionAttempts;\n\n    const transportServer = options.transportServers!.length ? options.transportServers![0].uri : '';\n\n    const configuration: UserAgentOptions = {\n      uri: UserAgent.makeURI(`sip:${this.sipInfo.username}@${this.sipInfo.domain}`),\n      transportOptions: {\n        server: transportServer,\n        traceSip: true,\n        connectionTimeout: 5,\n        keepAliveDebounce: options.keepAliveDebounce,\n        keepAliveInterval: options.keepAliveInterval,\n      },\n      // WebPhoneTransport will handle reconnection.\n      reconnectionAttempts: 0,\n      authorizationUsername: this.sipInfo.authorizationId,\n      authorizationPassword: this.sipInfo.password,\n      logLevel: (LogLevels[options.logLevel!] as unknown as LogLevel) || defaultLogLevel,\n      logBuiltinEnabled: options.builtinEnabled,\n      logConnector: options.connector || undefined,\n      userAgentString,\n      sessionDescriptionHandlerFactoryOptions,\n      sessionDescriptionHandlerFactory,\n      allowLegacyNotifications: true,\n    };\n\n    options.sipErrorCodes = sipErrorCodes;\n    options.switchBackInterval = this.sipInfo.switchBackInterval;\n    this.userAgent = createWebPhoneUserAgent(configuration, this.sipInfo, options, id!);\n  }\n}\n","/**\n * Log levels.\n * @public\n */\nexport var Levels;\n(function (Levels) {\n    Levels[Levels[\"error\"] = 0] = \"error\";\n    Levels[Levels[\"warn\"] = 1] = \"warn\";\n    Levels[Levels[\"log\"] = 2] = \"log\";\n    Levels[Levels[\"debug\"] = 3] = \"debug\";\n})(Levels = Levels || (Levels = {}));\n","export * from \"./modifiers/index.js\";\nexport * from \"./session-description-handler/index.js\";\nexport * from \"./session-manager/index.js\";\nexport * from \"./simple-user/index.js\";\nexport * from \"./transport/index.js\";\n","/**\n * SessionDescriptionHandlerModifer functions for web browsers.\n * @packageDocumentation\n */\nexport * from \"./modifiers.js\";\n","const stripPayload = (sdp, payload) => {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const mediaDescs = [];\n    const lines = sdp.split(/\\r\\n/);\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    let currentMediaDesc;\n    for (let i = 0; i < lines.length;) {\n        const line = lines[i];\n        if (/^m=(?:audio|video)/.test(line)) {\n            currentMediaDesc = {\n                index: i,\n                stripped: []\n            };\n            mediaDescs.push(currentMediaDesc);\n        }\n        else if (currentMediaDesc) {\n            const rtpmap = /^a=rtpmap:(\\d+) ([^/]+)\\//.exec(line);\n            if (rtpmap && payload === rtpmap[2]) {\n                lines.splice(i, 1);\n                currentMediaDesc.stripped.push(rtpmap[1]);\n                continue; // Don't increment 'i'\n            }\n        }\n        i++;\n    }\n    for (const mediaDesc of mediaDescs) {\n        const mline = lines[mediaDesc.index].split(\" \");\n        // Ignore the first 3 parameters of the mline. The codec information is after that\n        for (let j = 3; j < mline.length;) {\n            if (mediaDesc.stripped.indexOf(mline[j]) !== -1) {\n                mline.splice(j, 1);\n                continue;\n            }\n            j++;\n        }\n        lines[mediaDesc.index] = mline.join(\" \");\n    }\n    return lines.join(\"\\r\\n\");\n};\nconst stripMediaDescription = (sdp, description) => {\n    const descriptionRegExp = new RegExp(\"m=\" + description + \".*$\", \"gm\");\n    const groupRegExp = new RegExp(\"^a=group:.*$\", \"gm\");\n    if (descriptionRegExp.test(sdp)) {\n        let midLineToRemove;\n        sdp = sdp.split(/^m=/gm).filter((section) => {\n            if (section.substr(0, description.length) === description) {\n                midLineToRemove = section.match(/^a=mid:.*$/gm);\n                if (midLineToRemove) {\n                    const step = midLineToRemove[0].match(/:.+$/g);\n                    if (step) {\n                        midLineToRemove = step[0].substr(1);\n                    }\n                }\n                return false;\n            }\n            return true;\n        }).join(\"m=\");\n        const groupLine = sdp.match(groupRegExp);\n        if (groupLine && groupLine.length === 1) {\n            let groupLinePortion = groupLine[0];\n            // eslint-disable-next-line no-useless-escape\n            const groupRegExpReplace = new RegExp(\"\\ *\" + midLineToRemove + \"[^\\ ]*\", \"g\");\n            groupLinePortion = groupLinePortion.replace(groupRegExpReplace, \"\");\n            sdp = sdp.split(groupRegExp).join(groupLinePortion);\n        }\n    }\n    return sdp;\n};\n/**\n * Modifier.\n * @public\n */\nexport function stripTcpCandidates(description) {\n    description.sdp = (description.sdp || \"\").replace(/^a=candidate:\\d+ \\d+ tcp .*?\\r\\n/img, \"\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripTelephoneEvent(description) {\n    description.sdp = stripPayload(description.sdp || \"\", \"telephone-event\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function cleanJitsiSdpImageattr(description) {\n    description.sdp = (description.sdp || \"\").replace(/^(a=imageattr:.*?)(x|y)=\\[0-/gm, \"$1$2=[1:\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripG722(description) {\n    description.sdp = stripPayload(description.sdp || \"\", \"G722\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripRtpPayload(payload) {\n    return (description) => {\n        description.sdp = stripPayload(description.sdp || \"\", payload);\n        return Promise.resolve(description);\n    };\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripVideo(description) {\n    description.sdp = stripMediaDescription(description.sdp || \"\", \"video\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function addMidLines(description) {\n    let sdp = description.sdp || \"\";\n    if (sdp.search(/^a=mid.*$/gm) === -1) {\n        const mlines = sdp.match(/^m=.*$/gm);\n        const sdpArray = sdp.split(/^m=.*$/gm);\n        if (mlines) {\n            mlines.forEach((elem, idx) => {\n                mlines[idx] = elem + \"\\na=mid:\" + idx;\n            });\n        }\n        sdpArray.forEach((elem, idx) => {\n            if (mlines && mlines[idx]) {\n                sdpArray[idx] = elem + mlines[idx];\n            }\n        });\n        sdp = sdpArray.join(\"\");\n        description.sdp = sdp;\n    }\n    return Promise.resolve(description);\n}\n/**\n * The modifier that should be used when the session would like to place the call on hold.\n * @param description - The description that will be modified.\n */\nexport function holdModifier(description) {\n    if (!description.sdp || !description.type) {\n        throw new Error(\"Invalid SDP\");\n    }\n    let sdp = description.sdp;\n    const type = description.type;\n    if (sdp) {\n        if (!/a=(sendrecv|sendonly|recvonly|inactive)/.test(sdp)) {\n            sdp = sdp.replace(/(m=[^\\r]*\\r\\n)/g, \"$1a=sendonly\\r\\n\");\n        }\n        else {\n            sdp = sdp.replace(/a=sendrecv\\r\\n/g, \"a=sendonly\\r\\n\");\n            sdp = sdp.replace(/a=recvonly\\r\\n/g, \"a=inactive\\r\\n\");\n        }\n    }\n    return Promise.resolve({ sdp, type });\n}\n","/**\n * A SessionDescriptionHandler for web browsers.\n * @packageDocumentation\n */\nexport * from \"./media-stream-factory-default.js\";\nexport * from \"./media-stream-factory.js\";\nexport * from \"./peer-connection-configuration-default.js\";\nexport * from \"./peer-connection-delegate.js\";\nexport * from \"./session-description-handler-configuration.js\";\nexport * from \"./session-description-handler-factory-default.js\";\nexport * from \"./session-description-handler-factory-options.js\";\nexport * from \"./session-description-handler-factory.js\";\nexport * from \"./session-description-handler-options.js\";\nexport * from \"./session-description-handler.js\";\nexport * from \"./web-audio-session-description-handler.js\";\n","/**\n * Function which returns a MediaStreamFactory.\n * @public\n */\nexport function defaultMediaStreamFactory() {\n    return (constraints) => {\n        // if no audio or video, return a media stream without tracks\n        if (!constraints.audio && !constraints.video) {\n            return Promise.resolve(new MediaStream());\n        }\n        // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n        // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n        // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n        // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n        if (navigator.mediaDevices === undefined) {\n            return Promise.reject(new Error(\"Media devices not available in insecure contexts.\"));\n        }\n        return navigator.mediaDevices.getUserMedia.call(navigator.mediaDevices, constraints);\n    };\n}\n","export {};\n","/**\n * Function which returns an RTCConfiguration.\n * @public\n */\nexport function defaultPeerConnectionConfiguration() {\n    const configuration = {\n        bundlePolicy: \"balanced\",\n        certificates: undefined,\n        iceCandidatePoolSize: 0,\n        iceServers: [{ urls: \"stun:stun.l.google.com:19302\" }],\n        iceTransportPolicy: \"all\",\n        rtcpMuxPolicy: \"require\"\n    };\n    return configuration;\n}\n","export {};\n","export {};\n","import { defaultMediaStreamFactory } from \"./media-stream-factory-default.js\";\nimport { defaultPeerConnectionConfiguration } from \"./peer-connection-configuration-default.js\";\nimport { SessionDescriptionHandler } from \"./session-description-handler.js\";\n/**\n * Function which returns a SessionDescriptionHandlerFactory.\n * @remarks\n * See {@link defaultPeerConnectionConfiguration} for the default peer connection configuration.\n * The ICE gathering timeout defaults to 5000ms.\n * @param mediaStreamFactory - MediaStream factory.\n * @public\n */\nexport function defaultSessionDescriptionHandlerFactory(mediaStreamFactory) {\n    return (session, options) => {\n        // provide a default media stream factory if need be\n        if (mediaStreamFactory === undefined) {\n            mediaStreamFactory = defaultMediaStreamFactory();\n        }\n        // make sure we allow `0` to be passed in so timeout can be disabled\n        const iceGatheringTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) !== undefined ? options === null || options === void 0 ? void 0 : options.iceGatheringTimeout : 5000;\n        // merge passed factory options into default session description configuration\n        const sessionDescriptionHandlerConfiguration = {\n            iceGatheringTimeout,\n            peerConnectionConfiguration: Object.assign(Object.assign({}, defaultPeerConnectionConfiguration()), options === null || options === void 0 ? void 0 : options.peerConnectionConfiguration)\n        };\n        const logger = session.userAgent.getLogger(\"sip.SessionDescriptionHandler\");\n        return new SessionDescriptionHandler(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n    };\n}\n","/**\n * A base class implementing a WebRTC session description handler for sip.js.\n * @remarks\n * It is expected/intended to be extended by specific WebRTC based applications.\n * @privateRemarks\n * So do not put application specific implementation in here.\n * @public\n */\nexport class SessionDescriptionHandler {\n    /**\n     * Constructor\n     * @param logger - A logger\n     * @param mediaStreamFactory - A factory to provide a MediaStream\n     * @param options - Options passed from the SessionDescriptionHandleFactory\n     */\n    constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration) {\n        logger.debug(\"SessionDescriptionHandler.constructor\");\n        this.logger = logger;\n        this.mediaStreamFactory = mediaStreamFactory;\n        this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n        this._localMediaStream = new MediaStream();\n        this._remoteMediaStream = new MediaStream();\n        this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration === null || sessionDescriptionHandlerConfiguration === void 0 ? void 0 : sessionDescriptionHandlerConfiguration.peerConnectionConfiguration);\n        this.initPeerConnectionEventHandlers();\n    }\n    /**\n     * The local media stream currently being sent.\n     *\n     * @remarks\n     * The local media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * local media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */\n    get localMediaStream() {\n        return this._localMediaStream;\n    }\n    /**\n     * The remote media stream currently being received.\n     *\n     * @remarks\n     * The remote media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * remote media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */\n    get remoteMediaStream() {\n        return this._remoteMediaStream;\n    }\n    /**\n     * The data channel. Undefined before it is created.\n     */\n    get dataChannel() {\n        return this._dataChannel;\n    }\n    /**\n     * The peer connection. Undefined if peer connection has closed.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```ts\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * While access to the underlying `RTCPeerConnection` is provided, note that\n     * using methods which modify it may break the operation of this class.\n     * In particular, this class depends on exclusive access to the\n     * event handler properties. If you need access to the peer connection\n     * events, either register for events using `addEventListener()` on\n     * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n     * this `SessionDescriptionHandler`.\n     */\n    get peerConnection() {\n        return this._peerConnection;\n    }\n    /**\n     * A delegate which provides access to the peer connection event handlers.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * Setting the peer connection event handlers directly is not supported\n     * and may break this class. As this class depends on exclusive access\n     * to them. This delegate is intended to provide access to the\n     * RTCPeerConnection events in a fashion which is supported.\n     */\n    get peerConnectionDelegate() {\n        return this._peerConnectionDelegate;\n    }\n    set peerConnectionDelegate(delegate) {\n        this._peerConnectionDelegate = delegate;\n    }\n    // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n    static dispatchAddTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"addtrack\", { track }));\n    }\n    // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n    static dispatchRemoveTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"removetrack\", { track }));\n    }\n    /**\n     * Stop tracks and close peer connection.\n     */\n    close() {\n        this.logger.debug(\"SessionDescriptionHandler.close\");\n        if (this._peerConnection === undefined) {\n            return;\n        }\n        this._peerConnection.getReceivers().forEach((receiver) => {\n            receiver.track && receiver.track.stop();\n        });\n        this._peerConnection.getSenders().forEach((sender) => {\n            sender.track && sender.track.stop();\n        });\n        if (this._dataChannel) {\n            this._dataChannel.close();\n        }\n        this._peerConnection.close();\n        this._peerConnection = undefined;\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */\n    enableReceiverTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) {\n            throw new Error(\"Peer connection closed.\");\n        }\n        peerConnection.getReceivers().forEach((receiver) => {\n            if (receiver.track) {\n                receiver.track.enabled = enable;\n            }\n        });\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */\n    enableSenderTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) {\n            throw new Error(\"Peer connection closed.\");\n        }\n        peerConnection.getSenders().forEach((sender) => {\n            if (sender.track) {\n                sender.track.enabled = enable;\n            }\n        });\n    }\n    /**\n     * Creates an offer or answer.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */\n    getDescription(options, modifiers) {\n        var _a, _b;\n        this.logger.debug(\"SessionDescriptionHandler.getDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // ICE will restart upon applying an offer created with the iceRestart option\n        const iceRestart = (_a = options === null || options === void 0 ? void 0 : options.offerOptions) === null || _a === void 0 ? void 0 : _a.iceRestart;\n        // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n        const iceTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) === undefined\n            ? (_b = this.sessionDescriptionHandlerConfiguration) === null || _b === void 0 ? void 0 : _b.iceGatheringTimeout\n            : options === null || options === void 0 ? void 0 : options.iceGatheringTimeout;\n        return this.getLocalMediaStream(options)\n            .then(() => this.updateDirection(options))\n            .then(() => this.createDataChannel(options))\n            .then(() => this.createLocalOfferOrAnswer(options))\n            .then((sessionDescription) => this.applyModifiers(sessionDescription, modifiers))\n            .then((sessionDescription) => this.setLocalSessionDescription(sessionDescription))\n            .then(() => this.waitForIceGatheringComplete(iceRestart, iceTimeout))\n            .then(() => this.getLocalSessionDescription())\n            .then((sessionDescription) => {\n            return {\n                body: sessionDescription.sdp,\n                contentType: \"application/sdp\"\n            };\n        })\n            .catch((error) => {\n            this.logger.error(\"SessionDescriptionHandler.getDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n     * @param contentType - The content type that is in the SIP Message.\n     */\n    hasDescription(contentType) {\n        this.logger.debug(\"SessionDescriptionHandler.hasDescription\");\n        return contentType === \"application/sdp\";\n    }\n    /**\n     * Called when ICE gathering completes and resolves any waiting promise.\n     * @remarks\n     * May be called prior to ICE gathering actually completing to allow the\n     * session descirption handler proceed with whatever candidates have been\n     * gathered up to this point in time. Use this to stop waiting on ICE to\n     * complete if you are implementing your own ICE gathering completion strategy.\n     */\n    iceGatheringComplete() {\n        this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete\");\n        // clear timer if need be\n        if (this.iceGatheringCompleteTimeoutId !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - clearing timeout\");\n            clearTimeout(this.iceGatheringCompleteTimeoutId);\n            this.iceGatheringCompleteTimeoutId = undefined;\n        }\n        // resolve and cleanup promise if need be\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - resolving promise\");\n            this.iceGatheringCompleteResolve && this.iceGatheringCompleteResolve();\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n    }\n    /**\n     * Send DTMF via RTP (RFC 4733).\n     * Returns true if DTMF send is successful, false otherwise.\n     * @param tones - A string containing DTMF digits.\n     * @param options - Options object to be used by sendDtmf.\n     */\n    sendDtmf(tones, options) {\n        this.logger.debug(\"SessionDescriptionHandler.sendDtmf\");\n        if (this._peerConnection === undefined) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - peer connection closed\");\n            return false;\n        }\n        const senders = this._peerConnection.getSenders();\n        if (senders.length === 0) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no senders\");\n            return false;\n        }\n        const dtmfSender = senders[0].dtmf;\n        if (!dtmfSender) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no DTMF sender\");\n            return false;\n        }\n        const duration = options === null || options === void 0 ? void 0 : options.duration;\n        const interToneGap = options === null || options === void 0 ? void 0 : options.interToneGap;\n        try {\n            dtmfSender.insertDTMF(tones, duration, interToneGap);\n        }\n        catch (e) {\n            this.logger.error(e.toString());\n            return false;\n        }\n        this.logger.log(\"SessionDescriptionHandler.sendDtmf sent via RTP: \" + tones.toString());\n        return true;\n    }\n    /**\n     * Sets an offer or answer.\n     * @param sdp - The session description.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */\n    setDescription(sdp, options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.setDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // SDP type\n        const type = this._peerConnection.signalingState === \"have-local-offer\" ? \"answer\" : \"offer\";\n        return this.getLocalMediaStream(options)\n            .then(() => this.applyModifiers({ sdp, type }, modifiers))\n            .then((sessionDescription) => this.setRemoteSessionDescription(sessionDescription))\n            .catch((error) => {\n            this.logger.error(\"SessionDescriptionHandler.setDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Applies modifiers to SDP prior to setting the local or remote description.\n     * @param sdp - SDP to modify.\n     * @param modifiers - Modifiers to apply.\n     */\n    applyModifiers(sdp, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.applyModifiers\");\n        if (!modifiers || modifiers.length === 0) {\n            return Promise.resolve(sdp);\n        }\n        return modifiers\n            .reduce((cur, next) => cur.then(next), Promise.resolve(sdp))\n            .then((modified) => {\n            this.logger.debug(\"SessionDescriptionHandler.applyModifiers - modified sdp\");\n            if (!modified.sdp || !modified.type) {\n                throw new Error(\"Invalid SDP.\");\n            }\n            return { sdp: modified.sdp, type: modified.type };\n        });\n    }\n    /**\n     * Create a data channel.\n     * @remarks\n     * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n     * Only creates a data channel if creating a local offer.\n     * Only if one does not already exist.\n     * @param options - Session description handler options.\n     */\n    createDataChannel(options) {\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // only create a data channel if requested\n        if ((options === null || options === void 0 ? void 0 : options.dataChannel) !== true) {\n            return Promise.resolve();\n        }\n        // do not create a data channel if we already have one\n        if (this._dataChannel) {\n            return Promise.resolve();\n        }\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer so create a data channel\n                this.logger.debug(\"SessionDescriptionHandler.createDataChannel - creating data channel\");\n                try {\n                    this._dataChannel = this._peerConnection.createDataChannel((options === null || options === void 0 ? void 0 : options.dataChannelLabel) || \"\", options === null || options === void 0 ? void 0 : options.dataChannelOptions);\n                    if (this.onDataChannel) {\n                        this.onDataChannel(this._dataChannel);\n                    }\n                    return Promise.resolve();\n                }\n                catch (error) {\n                    return Promise.reject(error);\n                }\n            case \"have-remote-offer\":\n                return Promise.resolve();\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Depending on current signaling state, create a local offer or answer.\n     * @param options - Session description handler options.\n     */\n    createLocalOfferOrAnswer(options) {\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer\");\n                return this._peerConnection.createOffer(options === null || options === void 0 ? void 0 : options.offerOptions);\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer\");\n                return this._peerConnection.createAnswer(options === null || options === void 0 ? void 0 : options.answerOptions);\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Get a media stream from the media stream factory and set the local media stream.\n     * @param options - Session description handler options.\n     */\n    getLocalMediaStream(options) {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalMediaStream\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        let constraints = Object.assign({}, options === null || options === void 0 ? void 0 : options.constraints);\n        // if we already have a local media stream...\n        if (this.localMediaStreamConstraints) {\n            // ignore constraint \"downgrades\"\n            constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n            constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n            // if constraints have not changed, do not get a new media stream\n            if (JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) &&\n                JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)) {\n                return Promise.resolve();\n            }\n        }\n        else {\n            // if no constraints have been specified, default to audio for initial media stream\n            if (constraints.audio === undefined && constraints.video === undefined) {\n                constraints = { audio: true };\n            }\n        }\n        this.localMediaStreamConstraints = constraints;\n        return this.mediaStreamFactory(constraints, this, options).then((mediaStream) => this.setLocalMediaStream(mediaStream));\n    }\n    /**\n     * Sets the peer connection's sender tracks and local media stream tracks.\n     *\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param stream - Media stream containing tracks to be utilized.\n     */\n    setLocalMediaStream(stream) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalMediaStream\");\n        if (!this._peerConnection) {\n            throw new Error(\"Peer connection undefined.\");\n        }\n        const pc = this._peerConnection;\n        const localStream = this._localMediaStream;\n        const trackUpdates = [];\n        const updateTrack = (newTrack) => {\n            const kind = newTrack.kind;\n            if (kind !== \"audio\" && kind !== \"video\") {\n                throw new Error(`Unknown new track kind ${kind}.`);\n            }\n            const sender = pc.getSenders().find((sender) => sender.track && sender.track.kind === kind);\n            if (sender) {\n                trackUpdates.push(new Promise((resolve) => {\n                    this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n                    resolve();\n                }).then(() => sender\n                    .replaceTrack(newTrack)\n                    .then(() => {\n                    const oldTrack = localStream.getTracks().find((localTrack) => localTrack.kind === kind);\n                    if (oldTrack) {\n                        oldTrack.stop();\n                        localStream.removeTrack(oldTrack);\n                        SessionDescriptionHandler.dispatchRemoveTrackEvent(localStream, oldTrack);\n                    }\n                    localStream.addTrack(newTrack);\n                    SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n                })\n                    .catch((error) => {\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`);\n                    throw error;\n                })));\n            }\n            else {\n                trackUpdates.push(new Promise((resolve) => {\n                    this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n                    resolve();\n                }).then(() => {\n                    // Review: could make streamless tracks a configurable option?\n                    // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n                    try {\n                        pc.addTrack(newTrack, localStream);\n                    }\n                    catch (error) {\n                        this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n                        throw error;\n                    }\n                    localStream.addTrack(newTrack);\n                    SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n                }));\n            }\n        };\n        // update peer connection audio tracks\n        const audioTracks = stream.getAudioTracks();\n        if (audioTracks.length) {\n            updateTrack(audioTracks[0]);\n        }\n        // update peer connection video tracks\n        const videoTracks = stream.getVideoTracks();\n        if (videoTracks.length) {\n            updateTrack(videoTracks[0]);\n        }\n        return trackUpdates.reduce((p, x) => p.then(() => x), Promise.resolve());\n    }\n    /**\n     * Gets the peer connection's local session description.\n     */\n    getLocalSessionDescription() {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalSessionDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        const sdp = this._peerConnection.localDescription;\n        if (!sdp) {\n            return Promise.reject(new Error(\"Failed to get local session description\"));\n        }\n        return Promise.resolve(sdp);\n    }\n    /**\n     * Sets the peer connection's local session description.\n     * @param sessionDescription - sessionDescription The session description.\n     */\n    setLocalSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalSessionDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        return this._peerConnection.setLocalDescription(sessionDescription);\n    }\n    /**\n     * Sets the peer connection's remote session description.\n     * @param sessionDescription - The session description.\n     */\n    setRemoteSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteSessionDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        const sdp = sessionDescription.sdp;\n        let type;\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable assume this is a remote offer\n                type = \"offer\";\n                break;\n            case \"have-local-offer\":\n                // if we made an offer, assume this is a remote answer\n                type = \"answer\";\n                break;\n            case \"have-local-pranswer\":\n            case \"have-remote-offer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        if (!sdp) {\n            this.logger.error(\"SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp\");\n            return Promise.reject(new Error(\"SDP is undefined\"));\n        }\n        return this._peerConnection.setRemoteDescription({ sdp, type });\n    }\n    /**\n     * Sets a remote media stream track.\n     *\n     * @remarks\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param track - Media stream track to be utilized.\n     */\n    setRemoteTrack(track) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteTrack\");\n        const remoteStream = this._remoteMediaStream;\n        if (remoteStream.getTrackById(track.id)) {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n        }\n        else if (track.kind === \"audio\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getAudioTracks().forEach((track) => {\n                track.stop();\n                remoteStream.removeTrack(track);\n                SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n        }\n        else if (track.kind === \"video\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getVideoTracks().forEach((track) => {\n                track.stop();\n                remoteStream.removeTrack(track);\n                SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n        }\n    }\n    /**\n     * Depending on the current signaling state and the session hold state, update transceiver direction.\n     * @param options - Session description handler options.\n     */\n    updateDirection(options) {\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // 4.2.3.  setDirection\n        //\n        //    The setDirection method sets the direction of a transceiver, which\n        //    affects the direction property of the associated \"m=\" section on\n        //    future calls to createOffer and createAnswer.  The permitted values\n        //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n        //    mirroring the identically named direction attributes defined in\n        //    [RFC4566], Section 6.\n        //\n        //    When creating offers, the transceiver direction is directly reflected\n        //    in the output, even for re-offers.  When creating answers, the\n        //    transceiver direction is intersected with the offered direction, as\n        //    explained in Section 5.3 below.\n        //\n        //    Note that while setDirection sets the direction property of the\n        //    transceiver immediately (Section 4.2.4), this property does not\n        //    immediately affect whether the transceiver's RtpSender will send or\n        //    its RtpReceiver will receive.  The direction in effect is represented\n        //    by the currentDirection property, which is only updated when an\n        //    answer is applied.\n        //\n        // 4.2.4.  direction\n        //\n        //    The direction property indicates the last value passed into\n        //    setDirection.  If setDirection has never been called, it is set to\n        //    the direction the transceiver was initialized with.\n        //\n        // 4.2.5.  currentDirection\n        //\n        //    The currentDirection property indicates the last negotiated direction\n        //    for the transceiver's associated \"m=\" section.  More specifically, it\n        //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n        //    section in the last applied answer (including provisional answers),\n        //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n        //    For example, if the direction attribute for the associated \"m=\"\n        //    section in a remote answer is \"recvonly\", currentDirection is set to\n        //    \"sendonly\".\n        //\n        //    If an answer that references this transceiver has not yet been\n        //    applied or if the transceiver is stopped, currentDirection is set to\n        //    \"null\".\n        //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n        //\n        // *  A direction attribute, determined by applying the rules regarding\n        //    the offered direction specified in [RFC3264], Section 6.1, and\n        //    then intersecting with the direction of the associated\n        //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n        //    offered as \"sendonly\" and the local transceiver is set to\n        //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n        // https://tools.ietf.org/html/rfc8829#section-5.3.1\n        //\n        // If a stream is offered as sendonly, the corresponding stream MUST be\n        // marked as recvonly or inactive in the answer.  If a media stream is\n        // listed as recvonly in the offer, the answer MUST be marked as\n        // sendonly or inactive in the answer.  If an offered media stream is\n        // listed as sendrecv (or if there is no direction attribute at the\n        // media or session level, in which case the stream is sendrecv by\n        // default), the corresponding stream in the answer MAY be marked as\n        // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n        // stream is listed as inactive, it MUST be marked as inactive in the\n        // answer.\n        // https://tools.ietf.org/html/rfc3264#section-6.1\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting offer direction\");\n                {\n                    // determine the direction to offer given the current direction and hold state\n                    const directionToOffer = (currentDirection) => {\n                        switch (currentDirection) {\n                            case \"inactive\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"recvonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"stopped\":\n                                return \"stopped\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    };\n                    // set the transceiver direction to the offer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver) => {\n                        if (transceiver.direction /* guarding, but should always be true */) {\n                            const offerDirection = directionToOffer(transceiver.direction);\n                            if (transceiver.direction !== offerDirection) {\n                                transceiver.direction = offerDirection;\n                            }\n                        }\n                    });\n                }\n                break;\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting answer direction\");\n                // FIXME: This is not the correct way to determine the answer direction as it is only\n                // considering first match in the offered SDP and using that to determine the answer direction.\n                // While that may be fine for our current use cases, it is not a generally correct approach.\n                {\n                    // determine the offered direction\n                    const offeredDirection = (() => {\n                        const description = this._peerConnection.remoteDescription;\n                        if (!description) {\n                            throw new Error(\"Failed to read remote offer\");\n                        }\n                        const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n                        if (searchResult) {\n                            switch (searchResult[0]) {\n                                case \"a=inactive\\r\\n\":\n                                    return \"inactive\";\n                                case \"a=recvonly\\r\\n\":\n                                    return \"recvonly\";\n                                case \"a=sendonly\\r\\n\":\n                                    return \"sendonly\";\n                                case \"a=sendrecv\\r\\n\":\n                                    return \"sendrecv\";\n                                default:\n                                    throw new Error(\"Should never happen\");\n                            }\n                        }\n                        return \"sendrecv\";\n                    })();\n                    // determine the answer direction based on the offered direction and our hold state\n                    const answerDirection = (() => {\n                        switch (offeredDirection) {\n                            case \"inactive\":\n                                return \"inactive\";\n                            case \"recvonly\":\n                                return \"sendonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    })();\n                    // set the transceiver direction to the answer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver) => {\n                        if (transceiver.direction /* guarding, but should always be true */) {\n                            if (transceiver.direction !== \"stopped\" && transceiver.direction !== answerDirection) {\n                                transceiver.direction = answerDirection;\n                            }\n                        }\n                    });\n                }\n                break;\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Wait for ICE gathering to complete.\n     * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n     * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n     */\n    waitForIceGatheringComplete(restart = false, timeout = 0) {\n        this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(\"Peer connection closed.\");\n        }\n        // guard already complete\n        if (!restart && this._peerConnection.iceGatheringState === \"complete\") {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - already complete\");\n            return Promise.resolve();\n        }\n        // only one may be waiting, reject any prior\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise\");\n            this.iceGatheringCompleteReject && this.iceGatheringCompleteReject(new Error(\"Promise superseded.\"));\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n        this.iceGatheringCompletePromise = new Promise((resolve, reject) => {\n            this.iceGatheringCompleteResolve = resolve;\n            this.iceGatheringCompleteReject = reject;\n            if (timeout > 0) {\n                this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in \" + timeout);\n                this.iceGatheringCompleteTimeoutId = setTimeout(() => {\n                    this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout\");\n                    this.iceGatheringComplete();\n                }, timeout);\n            }\n        });\n        return this.iceGatheringCompletePromise;\n    }\n    /**\n     * Initializes the peer connection event handlers\n     */\n    initPeerConnectionEventHandlers() {\n        this.logger.debug(\"SessionDescriptionHandler.initPeerConnectionEventHandlers\");\n        if (!this._peerConnection)\n            throw new Error(\"Peer connection undefined.\");\n        const peerConnection = this._peerConnection;\n        peerConnection.onconnectionstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.connectionState;\n            this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onconnectionstatechange) {\n                this._peerConnectionDelegate.onconnectionstatechange(event);\n            }\n        };\n        peerConnection.ondatachannel = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.ondatachannel`);\n            this._dataChannel = event.channel;\n            if (this.onDataChannel) {\n                this.onDataChannel(this._dataChannel);\n            }\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ondatachannel) {\n                this._peerConnectionDelegate.ondatachannel(event);\n            }\n        };\n        peerConnection.onicecandidate = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidate`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidate) {\n                this._peerConnectionDelegate.onicecandidate(event);\n            }\n        };\n        peerConnection.onicecandidateerror = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidateerror`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidateerror) {\n                this._peerConnectionDelegate.onicecandidateerror(event);\n            }\n        };\n        peerConnection.oniceconnectionstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.iceConnectionState;\n            this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.oniceconnectionstatechange) {\n                this._peerConnectionDelegate.oniceconnectionstatechange(event);\n            }\n        };\n        peerConnection.onicegatheringstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.iceGatheringState;\n            this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n            if (newState === \"complete\") {\n                this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n            }\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicegatheringstatechange) {\n                this._peerConnectionDelegate.onicegatheringstatechange(event);\n            }\n        };\n        peerConnection.onnegotiationneeded = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onnegotiationneeded`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onnegotiationneeded) {\n                this._peerConnectionDelegate.onnegotiationneeded(event);\n            }\n        };\n        peerConnection.onsignalingstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.signalingState;\n            this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onsignalingstatechange) {\n                this._peerConnectionDelegate.onsignalingstatechange(event);\n            }\n        };\n        peerConnection.ontrack = (event) => {\n            var _a;\n            const kind = event.track.kind;\n            const enabled = event.track.enabled ? \"enabled\" : \"disabled\";\n            this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n            this.setRemoteTrack(event.track);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ontrack) {\n                this._peerConnectionDelegate.ontrack(event);\n            }\n        };\n    }\n}\n","export {};\n","export {};\n","export {};\n","import { SessionDescriptionHandler } from \"./session-description-handler.js\";\n/**\n * Start a conference.\n * @param conferenceSessions - The sessions to conference.\n *\n * @beta\n */\nexport function startLocalConference(conferenceSessions) {\n    if (conferenceSessions.length < 2) {\n        throw new Error(\"Start local conference requires at leaast 2 sessions.\");\n    }\n    // Return all possible pairs of elements in an array.\n    const pairs = (arr) => arr.map((v, i) => arr.slice(i + 1).map((w) => [v, w])).reduce((acc, curVal) => acc.concat(curVal), []);\n    // For each pair of sessions making up the conference, join their media together.\n    // A session desciprion handler manages the media, streams and tracks for a session.\n    pairs(conferenceSessions.map((session) => session.sessionDescriptionHandler)).forEach(([sdh0, sdh1]) => {\n        if (!(sdh0 instanceof WebAudioSessionDescriptionHandler && sdh1 instanceof WebAudioSessionDescriptionHandler)) {\n            throw new Error(\"Session description handler not instance of SessionManagerSessionDescriptionHandler\");\n        }\n        sdh0.joinWith(sdh1);\n    });\n}\n/**\n * A WebAudioSessionDescriptionHandler uses the Web Audio API to enable local conferencing of audio streams.\n * @remarks\n * This handler only works for one track of audio per peer connection. While the session description handler\n * being extended supports both audio and video, attempting to utilize video with this handler is not defined.\n *\n * @beta\n */\nexport class WebAudioSessionDescriptionHandler extends SessionDescriptionHandler {\n    constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration) {\n        super(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            WebAudioSessionDescriptionHandler.audioContext = new AudioContext();\n        }\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks.\n     */\n    enableSenderTracks(enable) {\n        // This session decription handler is not using the original outbound (local) media stream source\n        // and has instead inserted a Web Audio proxy media stream to allow conferencing and mixing of stream.\n        // So here, we only want to mute the original source and not the proxy as it may be mixing other\n        // sources into the outbound stream and we do not want to enable/disable those. We only want to\n        // enable/disable the original stream source so that it's media gets muted/unmuted going to the proxy.\n        const stream = this.localMediaStreamReal;\n        if (stream === undefined) {\n            throw new Error(\"Stream undefined.\");\n        }\n        stream.getAudioTracks().forEach((track) => {\n            track.enabled = enable;\n        });\n    }\n    /**\n     * Returns a WebRTC MediaStream proxying the provided audio media stream.\n     * This allows additional Web Audio media stream source nodes to be connected\n     * to the destination node assoicated with the returned stream so we can mix\n     * aditional audio sorces into the local media stream (ie for 3-way conferencing).\n     * @param stream - The MediaStream to proxy.\n     */\n    initLocalMediaStream(stream) {\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        }\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamDestinationNode =\n            WebAudioSessionDescriptionHandler.audioContext.createMediaStreamDestination();\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n        return this.localMediaStreamDestinationNode.stream;\n    }\n    /**\n     * Join (conference) media streams with another party.\n     * @param peer - The session description handler of the peer to join with.\n     */\n    joinWith(peer) {\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        }\n        // Mix our inbound (remote) stream into the peer's outbound (local) streams.\n        const ourNewInboundStreamSource = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(this.remoteMediaStream);\n        const peerOutboundStreamDestination = peer.localMediaStreamDestinationNode;\n        if (peerOutboundStreamDestination === undefined) {\n            throw new Error(\"Peer outbound (local) stream local media stream destination is undefined.\");\n        }\n        ourNewInboundStreamSource.connect(peerOutboundStreamDestination);\n        // Mix the peer's inbound (remote) streams into our outbound (local) stream.\n        const peerNewInboundStreamSource = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(peer.remoteMediaStream);\n        const ourOutboundStreamDestination = this.localMediaStreamDestinationNode;\n        if (ourOutboundStreamDestination === undefined) {\n            throw new Error(\"Our outbound (local) stream local media stream destination is undefined.\");\n        }\n        peerNewInboundStreamSource.connect(ourOutboundStreamDestination);\n    }\n    /**\n     * Sets the original local media stream.\n     * @param stream - Media stream containing tracks to be utilized.\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     */\n    setRealLocalMediaStream(stream) {\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        }\n        if (!this.localMediaStreamReal) {\n            this.initLocalMediaStream(stream);\n            return;\n        }\n        if (!this.localMediaStreamDestinationNode || !this.localMediaStreamSourceNode || !this.localMediaStreamReal) {\n            throw new Error(\"Local media stream undefined.\");\n        }\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode.disconnect(this.localMediaStreamDestinationNode);\n        this.localMediaStreamSourceNode = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n    }\n}\n","export * from \"./managed-session-factory-default.js\";\nexport * from \"./managed-session-factory.js\";\nexport * from \"./managed-session.js\";\nexport * from \"./session-manager-delegate.js\";\nexport * from \"./session-manager-options.js\";\nexport * from \"./session-manager.js\";\n","/**\n * Function which returns a ManagedSessionFactory.\n * @public\n */\nexport function defaultManagedSessionFactory() {\n    return (sessionManager, session) => {\n        return { session, held: false, muted: false };\n    };\n}\n","export {};\n","export {};\n","export {};\n","export {};\n","import { Invitation } from \"../../../api/invitation.js\";\nimport { Inviter } from \"../../../api/inviter.js\";\nimport { Messager } from \"../../../api/messager.js\";\nimport { Registerer } from \"../../../api/registerer.js\";\nimport { RegistererState } from \"../../../api/registerer-state.js\";\nimport { RequestPendingError } from \"../../../api/exceptions/request-pending.js\";\nimport { Session } from \"../../../api/session.js\";\nimport { SessionState } from \"../../../api/session-state.js\";\nimport { UserAgent } from \"../../../api/user-agent.js\";\nimport { UserAgentState } from \"../../../api/user-agent-state.js\";\nimport { SessionDescriptionHandler } from \"../session-description-handler/session-description-handler.js\";\nimport { Transport } from \"../transport/transport.js\";\nimport { defaultManagedSessionFactory } from \"./managed-session-factory-default.js\";\n/**\n * A session manager for SIP.js sessions.\n * @public\n */\nexport class SessionManager {\n    /**\n     * Constructs a new instance of the `SessionManager` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SessionManagerOptions} for details.\n     */\n    constructor(server, options = {}) {\n        /** Sessions being managed. */\n        this.managedSessions = [];\n        this.attemptingReconnection = false;\n        this.optionsPingFailure = false;\n        this.optionsPingRunning = false;\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({\n            aor: \"\",\n            autoStop: true,\n            delegate: {},\n            iceStopWaitingOnServerReflexive: false,\n            managedSessionFactory: defaultManagedSessionFactory(),\n            maxSimultaneousSessions: 2,\n            media: {},\n            optionsPingInterval: -1,\n            optionsPingRequestURI: \"\",\n            reconnectionAttempts: 3,\n            reconnectionDelay: 4,\n            registrationRetry: false,\n            registrationRetryInterval: 3,\n            registerGuard: null,\n            registererOptions: {},\n            registererRegisterOptions: {},\n            sendDTMFUsingSessionDescriptionHandler: false,\n            userAgentOptions: {}\n        }, SessionManager.stripUndefinedProperties(options));\n        // UserAgentOptions\n        const userAgentOptions = Object.assign({}, options.userAgentOptions);\n        // Transport\n        if (!userAgentOptions.transportConstructor) {\n            userAgentOptions.transportConstructor = Transport;\n        }\n        // TransportOptions\n        if (!userAgentOptions.transportOptions) {\n            userAgentOptions.transportOptions = {\n                server\n            };\n        }\n        // URI\n        if (!userAgentOptions.uri) {\n            // If an AOR was provided, convert it to a URI\n            if (options.aor) {\n                const uri = UserAgent.makeURI(options.aor);\n                if (!uri) {\n                    throw new Error(`Failed to create valid URI from ${options.aor}`);\n                }\n                userAgentOptions.uri = uri;\n            }\n        }\n        // UserAgent\n        this.userAgent = new UserAgent(userAgentOptions);\n        // UserAgent's delegate\n        this.userAgent.delegate = {\n            // Handle connection with server established\n            onConnect: () => {\n                this.logger.log(`Connected`);\n                if (this.delegate && this.delegate.onServerConnect) {\n                    this.delegate.onServerConnect();\n                }\n                // Attempt to register if we are supposed to be registered\n                if (this.shouldBeRegistered) {\n                    this.register();\n                }\n                // Start OPTIONS pings if we are to be pinging\n                if (this.options.optionsPingInterval > 0) {\n                    this.optionsPingStart();\n                }\n            },\n            // Handle connection with server lost\n            onDisconnect: async (error) => {\n                this.logger.log(`Disconnected`);\n                // Stop OPTIONS ping if need be.\n                let optionsPingFailure = false;\n                if (this.options.optionsPingInterval > 0) {\n                    optionsPingFailure = this.optionsPingFailure;\n                    this.optionsPingFailure = false;\n                    this.optionsPingStop();\n                }\n                // Let delgate know we have disconnected\n                if (this.delegate && this.delegate.onServerDisconnect) {\n                    this.delegate.onServerDisconnect(error);\n                }\n                // If the user called `disconnect` a graceful cleanup will be done therein.\n                // Only cleanup if network/server dropped the connection.\n                // Only reconnect if network/server dropped the connection\n                if (error || optionsPingFailure) {\n                    // There is no transport at this point, so we are not expecting to be able to\n                    // send messages much less get responses. So just dispose of everything without\n                    // waiting for anything to succeed.\n                    if (this.registerer) {\n                        this.logger.log(`Disposing of registerer...`);\n                        this.registerer.dispose().catch((e) => {\n                            this.logger.debug(`Error occurred disposing of registerer after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                        this.registerer = undefined;\n                    }\n                    this.managedSessions\n                        .slice()\n                        .map((el) => el.session)\n                        .forEach(async (session) => {\n                        this.logger.log(`Disposing of session...`);\n                        session.dispose().catch((e) => {\n                            this.logger.debug(`Error occurred disposing of a session after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                    });\n                    // Attempt to reconnect if we are supposed to be connected.\n                    if (this.shouldBeConnected) {\n                        this.attemptReconnection();\n                    }\n                }\n            },\n            // Handle incoming invitations\n            onInvite: (invitation) => {\n                this.logger.log(`[${invitation.id}] Received INVITE`);\n                // Guard against a maximum number of pre-existing sessions.\n                // An incoming INVITE request may be received at any time and/or while in the process\n                // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n                const maxSessions = this.options.maxSimultaneousSessions;\n                if (maxSessions !== 0 && this.managedSessions.length > maxSessions) {\n                    this.logger.warn(`[${invitation.id}] Session already in progress, rejecting INVITE...`);\n                    invitation\n                        .reject()\n                        .then(() => {\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    })\n                        .catch((error) => {\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                    return;\n                }\n                // Use our configured constraints as options for any Inviter created as result of a REFER\n                const referralInviterOptions = {\n                    sessionDescriptionHandlerOptions: { constraints: this.constraints }\n                };\n                // Initialize our session\n                this.initSession(invitation, referralInviterOptions);\n                // Delegate\n                if (this.delegate && this.delegate.onCallReceived) {\n                    this.delegate.onCallReceived(invitation);\n                }\n                else {\n                    this.logger.warn(`[${invitation.id}] No handler available, rejecting INVITE...`);\n                    invitation\n                        .reject()\n                        .then(() => {\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    })\n                        .catch((error) => {\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                }\n            },\n            // Handle incoming messages\n            onMessage: (message) => {\n                message.accept().then(() => {\n                    if (this.delegate && this.delegate.onMessageReceived) {\n                        this.delegate.onMessageReceived(message);\n                    }\n                });\n            },\n            // Handle incoming notifications\n            onNotify: (notification) => {\n                notification.accept().then(() => {\n                    if (this.delegate && this.delegate.onNotificationReceived) {\n                        this.delegate.onNotificationReceived(notification);\n                    }\n                });\n            }\n        };\n        // RegistererOptions\n        this.registererOptions = Object.assign({}, options.registererOptions);\n        // RegistererRegisterOptions\n        this.registererRegisterOptions = Object.assign({}, options.registererRegisterOptions);\n        // Retry registration on failure or rejection.\n        if (this.options.registrationRetry) {\n            // If the register request is rejected, try again...\n            this.registererRegisterOptions.requestDelegate = this.registererRegisterOptions.requestDelegate || {};\n            const existingOnReject = this.registererRegisterOptions.requestDelegate.onReject;\n            this.registererRegisterOptions.requestDelegate.onReject = (response) => {\n                existingOnReject && existingOnReject(response);\n                // If at first we don't succeed, try try again...\n                this.attemptRegistration();\n            };\n        }\n        // Use the SIP.js logger\n        this.logger = this.userAgent.getLogger(\"sip.SessionManager\");\n        // Monitor network connectivity and attempt reconnection and reregistration when we come online\n        window.addEventListener(\"online\", () => {\n            this.logger.log(`Online`);\n            if (this.shouldBeConnected) {\n                this.connect();\n            }\n        });\n        // NOTE: The autoStop option does not currently work as one likley expects.\n        //       This code is here because the \"autoStop behavior\" and this assoicated\n        //       implemenation has been a recurring request. So instead of removing\n        //       the implementation again (because it doesn't work) and then having\n        //       to explain agian the issue over and over again to those who want it,\n        //       we have included it here to break that cycle. The implementation is\n        //       harmless and serves to provide an explaination for those interested.\n        if (this.options.autoStop) {\n            // Standard operation workflow will resume after this callback exits, meaning\n            // that any asynchronous operations are likely not going to be finished, especially\n            // if they are guaranteed to not be executed in the current tick (promises fall\n            // under this category, they will never be resolved synchronously by design).\n            window.addEventListener(\"beforeunload\", async () => {\n                this.shouldBeConnected = false;\n                this.shouldBeRegistered = false;\n                if (this.userAgent.state !== UserAgentState.Stopped) {\n                    // The stop() method returns a promise which will not resolve before the page unloads.\n                    await this.userAgent.stop();\n                }\n            });\n        }\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */\n    static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key) => {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                object[key] = options[key];\n            }\n            return object;\n        }, {});\n    }\n    /**\n     * The local media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */\n    getLocalMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) {\n            return undefined;\n        }\n        if (!(sdh instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        }\n        return sdh.localMediaStream;\n    }\n    /**\n     * The remote media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */\n    getRemoteMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) {\n            return undefined;\n        }\n        if (!(sdh instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        }\n        return sdh.remoteMediaStream;\n    }\n    /**\n     * The local audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    getLocalAudioTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"audio\");\n    }\n    /**\n     * The local video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    getLocalVideoTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"video\");\n    }\n    /**\n     * The remote audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    getRemoteAudioTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"audio\");\n    }\n    /**\n     * The remote video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    getRemoteVideoTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"video\");\n    }\n    /**\n     * Connect.\n     * @remarks\n     * If not started, starts the UserAgent connecting the WebSocket Transport.\n     * Otherwise reconnects the UserAgent's WebSocket Transport.\n     * Attempts will be made to reconnect as needed.\n     */\n    async connect() {\n        this.logger.log(`Connecting UserAgent...`);\n        this.shouldBeConnected = true;\n        if (this.userAgent.state !== UserAgentState.Started) {\n            return this.userAgent.start();\n        }\n        return this.userAgent.reconnect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * If not stopped, stops the UserAgent disconnecting the WebSocket Transport.\n     */\n    async disconnect() {\n        this.logger.log(`Disconnecting UserAgent...`);\n        if (this.userAgent.state === UserAgentState.Stopped) {\n            return Promise.resolve();\n        }\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        this.registerer = undefined;\n        return this.userAgent.stop();\n    }\n    /**\n     * Return true if transport is connected.\n     */\n    isConnected() {\n        return this.userAgent.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     * Attempts will be made to re-register as needed.\n     */\n    async register(registererRegisterOptions) {\n        this.logger.log(`Registering UserAgent...`);\n        this.shouldBeRegistered = true;\n        if (registererRegisterOptions !== undefined) {\n            this.registererRegisterOptions = Object.assign({}, registererRegisterOptions);\n        }\n        if (!this.registerer) {\n            this.registerer = new Registerer(this.userAgent, this.registererOptions);\n            this.registerer.stateChange.addListener((state) => {\n                switch (state) {\n                    case RegistererState.Initial:\n                        break;\n                    case RegistererState.Registered:\n                        if (this.delegate && this.delegate.onRegistered) {\n                            this.delegate.onRegistered();\n                        }\n                        break;\n                    case RegistererState.Unregistered:\n                        if (this.delegate && this.delegate.onUnregistered) {\n                            this.delegate.onUnregistered();\n                        }\n                        // If we transition to an unregister state, attempt to get back to a registered state.\n                        if (this.shouldBeRegistered) {\n                            this.attemptRegistration();\n                        }\n                        break;\n                    case RegistererState.Terminated:\n                        break;\n                    default:\n                        throw new Error(\"Unknown registerer state.\");\n                }\n            });\n        }\n        return this.attemptRegistration(true);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */\n    async unregister(registererUnregisterOptions) {\n        this.logger.log(`Unregistering UserAgent...`);\n        this.shouldBeRegistered = false;\n        if (!this.registerer) {\n            this.logger.warn(`No registerer to unregister.`);\n            return Promise.resolve();\n        }\n        return this.registerer.unregister(registererUnregisterOptions).then(() => {\n            return;\n        });\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */\n    async call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`Beginning Session...`);\n        // Guard against a maximum number of pre-existing sessions.\n        // An incoming INVITE request may be received at any time and/or while in the process\n        // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n        const maxSessions = this.options.maxSimultaneousSessions;\n        if (maxSessions !== 0 && this.managedSessions.length > maxSessions) {\n            return Promise.reject(new Error(\"Maximum number of sessions already exists.\"));\n        }\n        const target = UserAgent.makeURI(destination);\n        if (!target) {\n            return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        }\n        // Use our configured constraints as InviterOptions if none provided\n        if (!inviterOptions) {\n            inviterOptions = {};\n        }\n        if (!inviterOptions.sessionDescriptionHandlerOptions) {\n            inviterOptions.sessionDescriptionHandlerOptions = {};\n        }\n        if (!inviterOptions.sessionDescriptionHandlerOptions.constraints) {\n            inviterOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        }\n        // If utilizing early media, add a handler to catch 183 Session Progress\n        // messages and then to play the associated remote media (the early media).\n        if (inviterOptions.earlyMedia) {\n            inviterInviteOptions = inviterInviteOptions || {};\n            inviterInviteOptions.requestDelegate = inviterInviteOptions.requestDelegate || {};\n            const existingOnProgress = inviterInviteOptions.requestDelegate.onProgress;\n            inviterInviteOptions.requestDelegate.onProgress = (response) => {\n                if (response.message.statusCode === 183) {\n                    this.setupRemoteMedia(inviter);\n                }\n                existingOnProgress && existingOnProgress(response);\n            };\n        }\n        // TODO: Any existing onSessionDescriptionHandler is getting clobbered here.\n        // If we get a server reflexive candidate, stop waiting on ICE gathering to complete.\n        // The candidate is a server reflexive candidate; the ip indicates an intermediary\n        // address assigned by the STUN server to represent the candidate's peer anonymously.\n        if (this.options.iceStopWaitingOnServerReflexive) {\n            inviterOptions.delegate = inviterOptions.delegate || {};\n            inviterOptions.delegate.onSessionDescriptionHandler = (sessionDescriptionHandler) => {\n                if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n                    throw new Error(\"Session description handler not instance of SessionDescriptionHandler\");\n                }\n                sessionDescriptionHandler.peerConnectionDelegate = {\n                    onicecandidate: (event) => {\n                        var _a;\n                        if (((_a = event.candidate) === null || _a === void 0 ? void 0 : _a.type) === \"srflx\") {\n                            this.logger.log(`[${inviter.id}] Found srflx ICE candidate, stop waiting...`);\n                            // In sip.js > 0.20.1 this cast should be removed as iceGatheringComplete will be public\n                            const sdh = sessionDescriptionHandler;\n                            sdh.iceGatheringComplete();\n                        }\n                    }\n                };\n            };\n        }\n        // Create a new Inviter for the outgoing Session\n        const inviter = new Inviter(this.userAgent, target, inviterOptions);\n        // Send INVITE\n        return this.sendInvite(inviter, inviterOptions, inviterInviteOptions).then(() => {\n            return inviter;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @param session - Session to hangup.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    async hangup(session) {\n        this.logger.log(`[${session.id}] Hangup...`);\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.terminate(session);\n    }\n    /**\n     * Answer an incoming call.\n     * @param session - Session to answer.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */\n    async answer(session, invitationAcceptOptions) {\n        this.logger.log(`[${session.id}] Accepting Invitation...`);\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        if (!(session instanceof Invitation)) {\n            return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        }\n        // Use our configured constraints as InvitationAcceptOptions if none provided\n        if (!invitationAcceptOptions) {\n            invitationAcceptOptions = {};\n        }\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions) {\n            invitationAcceptOptions.sessionDescriptionHandlerOptions = {};\n        }\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints) {\n            invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        }\n        return session.accept(invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @param session - Session to decline.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    async decline(session) {\n        this.logger.log(`[${session.id}] Rejecting Invitation...`);\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        if (!(session instanceof Invitation)) {\n            return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        }\n        return session.reject();\n    }\n    /**\n     * Hold call\n     * @param session - Session to hold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    async hold(session) {\n        this.logger.log(`[${session.id}] Holding session...`);\n        return this.setHold(session, true);\n    }\n    /**\n     * Unhold call.\n     * @param session - Session to unhold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    async unhold(session) {\n        this.logger.log(`[${session.id}] Unholding session...`);\n        return this.setHold(session, false);\n    }\n    /**\n     * Hold state.\n     * @param session - Session to check.\n     * @remarks\n     * True if session is on hold.\n     */\n    isHeld(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.held : false;\n    }\n    /**\n     * Mute call.\n     * @param session - Session to mute.\n     * @remarks\n     * Disable sender's media tracks.\n     */\n    mute(session) {\n        this.logger.log(`[${session.id}] Disabling media tracks...`);\n        this.setMute(session, true);\n    }\n    /**\n     * Unmute call.\n     * @param session - Session to unmute.\n     * @remarks\n     * Enable sender's media tracks.\n     */\n    unmute(session) {\n        this.logger.log(`[${session.id}] Enabling media tracks...`);\n        this.setMute(session, false);\n    }\n    /**\n     * Mute state.\n     * @param session - Session to check.\n     * @remarks\n     * True if sender's media track is disabled.\n     */\n    isMuted(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.muted : false;\n    }\n    /**\n     * Send DTMF.\n     * @param session - Session to send on.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */\n    async sendDTMF(session, tone) {\n        this.logger.log(`[${session.id}] Sending DTMF...`);\n        // Validate tone\n        if (!/^[0-9A-D#*,]$/.exec(tone)) {\n            return Promise.reject(new Error(\"Invalid DTMF tone.\"));\n        }\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        this.logger.log(`[${session.id}] Sending DTMF tone: ${tone}`);\n        if (this.options.sendDTMFUsingSessionDescriptionHandler) {\n            if (!session.sessionDescriptionHandler) {\n                return Promise.reject(new Error(\"Session desciption handler undefined.\"));\n            }\n            if (!session.sessionDescriptionHandler.sendDtmf(tone)) {\n                return Promise.reject(new Error(\"Failed to send DTMF\"));\n            }\n            return Promise.resolve();\n        }\n        else {\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            // The UA MUST populate the \"application/dtmf-relay\" body, as defined\n            // earlier, with the button pressed and the duration it was pressed\n            // for.  Technically, this actually requires the INFO to be generated\n            // when the user *releases* the button, however if the user has still\n            // not released a button after 5 seconds, which is the maximum duration\n            // supported by this mechanism, the UA should generate the INFO at that\n            // time.\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00#section-5.3\n            const dtmf = tone;\n            const duration = 2000;\n            const body = {\n                contentDisposition: \"render\",\n                contentType: \"application/dtmf-relay\",\n                content: \"Signal=\" + dtmf + \"\\r\\nDuration=\" + duration\n            };\n            const requestOptions = { body };\n            return session.info({ requestOptions }).then(() => {\n                return;\n            });\n        }\n    }\n    /**\n     * Transfer.\n     * @param session - Session with the transferee to transfer.\n     * @param target - The referral target.\n     * @remarks\n     * If target is a Session this is an attended transfer completion (REFER with Replaces),\n     * otherwise this is a blind transfer (REFER). Attempting an attended transfer\n     * completion on a call that has not been answered will be rejected. To implement\n     * an attended transfer with early completion, hangup the call with the target\n     * and execute a blind transfer to the target.\n     */\n    async transfer(session, target, options) {\n        this.logger.log(`[${session.id}] Referring session...`);\n        if (target instanceof Session) {\n            return session.refer(target, options).then(() => {\n                return;\n            });\n        }\n        const uri = UserAgent.makeURI(target);\n        if (!uri) {\n            return Promise.reject(new Error(`Failed to create a valid URI from \"${target}\"`));\n        }\n        return session.refer(uri, options).then(() => {\n            return;\n        });\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */\n    async message(destination, message) {\n        this.logger.log(`Sending message...`);\n        const target = UserAgent.makeURI(destination);\n        if (!target) {\n            return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        }\n        return new Messager(this.userAgent, target, message).message();\n    }\n    /** Media constraints. */\n    get constraints() {\n        let constraints = { audio: true, video: false }; // default to audio only calls\n        if (this.options.media.constraints) {\n            constraints = Object.assign({}, this.options.media.constraints);\n        }\n        return constraints;\n    }\n    /**\n     * Attempt reconnection up to `reconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */\n    attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (!this.shouldBeConnected) {\n            this.logger.log(`Should not be connected currently`);\n            return; // If intentionally disconnected, don't reconnect.\n        }\n        if (this.attemptingReconnection) {\n            this.logger.log(`Reconnection attempt already in progress`);\n        }\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Reconnection maximum attempts reached`);\n            return;\n        }\n        if (reconnectionAttempt === 1) {\n            this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        }\n        else {\n            this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying in ${reconnectionDelay} seconds`);\n        }\n        this.attemptingReconnection = true;\n        setTimeout(() => {\n            if (!this.shouldBeConnected) {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - aborted`);\n                this.attemptingReconnection = false;\n                return; // If intentionally disconnected, don't reconnect.\n            }\n            this.userAgent\n                .reconnect()\n                .then(() => {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n                this.attemptingReconnection = false;\n            })\n                .catch((error) => {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.logger.error(error.message);\n                this.attemptingReconnection = false;\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Register to receive calls.\n     * @param withoutDelay - If true attempt immediately, otherwise wait `registrationRetryInterval`.\n     */\n    attemptRegistration(withoutDelay = false) {\n        this.logger.log(`Registration attempt ${withoutDelay ? \"without delay\" : \"\"}`);\n        if (!this.shouldBeRegistered) {\n            this.logger.log(`Should not be registered currently`);\n            return Promise.resolve();\n        }\n        // It only makes sense to have one attempt in progress at a time.\n        // Perhaps we shall (or should) try once again.\n        if (this.registrationAttemptTimeout !== undefined) {\n            this.logger.log(`Registration attempt already in progress`);\n            return Promise.resolve();\n        }\n        // Helper function to send the register request.\n        const _register = () => {\n            // If we do not have a registerer, it is not worth trying to register.\n            if (!this.registerer) {\n                this.logger.log(`Registerer undefined`);\n                return Promise.resolve();\n            }\n            // If the WebSocket transport is not connected, it is not worth trying to register.\n            // Perhpas we shall (or should) try once we are connected.\n            if (!this.isConnected()) {\n                this.logger.log(`User agent not connected`);\n                return Promise.resolve();\n            }\n            // If the UserAgent is stopped, it is not worth trying to register.\n            // Perhaps we shall (or should) try once the UserAgent is running.\n            if (this.userAgent.state === UserAgentState.Stopped) {\n                this.logger.log(`User agent stopped`);\n                return Promise.resolve();\n            }\n            // If no guard defined, we are good to proceed without any further ado.\n            if (!this.options.registerGuard) {\n                return this.registerer.register(this.registererRegisterOptions).then(() => {\n                    return;\n                });\n            }\n            // Otherwise check to make sure the guard does not want us halt.\n            return this.options\n                .registerGuard()\n                .catch((error) => {\n                this.logger.log(`Register guard rejected will making registration attempt`);\n                throw error;\n            })\n                .then((halt) => {\n                if (halt || !this.registerer) {\n                    return Promise.resolve();\n                }\n                return this.registerer.register(this.registererRegisterOptions).then(() => {\n                    return;\n                });\n            });\n        };\n        // Compute an amount of time in seconds to wait before sending another register request.\n        // This is a small attempt to avoid DOS attacking our own backend in the event that a\n        // relatively large number of clients sychonously keep retrying register reqeusts.\n        // This is known to happen when the backend goes down for a period and all clients\n        // are attempting to register again - the backend gets slammed with synced reqeusts.\n        const computeRegistrationTimeout = (lowerBound) => {\n            const upperBound = lowerBound * 2;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        // Send register request after a delay\n        return new Promise((resolve, reject) => {\n            this.registrationAttemptTimeout = setTimeout(() => {\n                _register()\n                    .then(() => {\n                    this.registrationAttemptTimeout = undefined;\n                    resolve();\n                })\n                    .catch((error) => {\n                    this.registrationAttemptTimeout = undefined;\n                    if (error instanceof RequestPendingError) {\n                        resolve();\n                    }\n                    else {\n                        reject(error);\n                    }\n                });\n            }, withoutDelay ? 0 : computeRegistrationTimeout(this.options.registrationRetryInterval));\n        });\n    }\n    /** Helper function to remove media from html elements. */\n    cleanupMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session does not exist.\");\n        }\n        if (managedSession.mediaLocal) {\n            if (managedSession.mediaLocal.video) {\n                managedSession.mediaLocal.video.srcObject = null;\n                managedSession.mediaLocal.video.pause();\n            }\n        }\n        if (managedSession.mediaRemote) {\n            if (managedSession.mediaRemote.audio) {\n                managedSession.mediaRemote.audio.srcObject = null;\n                managedSession.mediaRemote.audio.pause();\n            }\n            if (managedSession.mediaRemote.video) {\n                managedSession.mediaRemote.video.srcObject = null;\n                managedSession.mediaRemote.video.pause();\n            }\n        }\n    }\n    /** Helper function to enable/disable media tracks. */\n    enableReceiverTracks(session, enable) {\n        if (!this.sessionExists(session)) {\n            throw new Error(\"Session does not exist.\");\n        }\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        }\n        sessionDescriptionHandler.enableReceiverTracks(enable);\n    }\n    /** Helper function to enable/disable media tracks. */\n    enableSenderTracks(session, enable) {\n        if (!this.sessionExists(session)) {\n            throw new Error(\"Session does not exist.\");\n        }\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        }\n        sessionDescriptionHandler.enableSenderTracks(enable);\n    }\n    /**\n     * Setup session delegate and state change handler.\n     * @param session - Session to setup.\n     * @param referralInviterOptions - Options for any Inviter created as result of a REFER.\n     */\n    initSession(session, referralInviterOptions) {\n        // Add the session\n        this.sessionAdd(session);\n        // Call session created callback\n        if (this.delegate && this.delegate.onCallCreated) {\n            this.delegate.onCallCreated(session);\n        }\n        // Setup session state change handler\n        session.stateChange.addListener((state) => {\n            this.logger.log(`[${session.id}] Session state changed to ${state}`);\n            switch (state) {\n                case SessionState.Initial:\n                    break;\n                case SessionState.Establishing:\n                    break;\n                case SessionState.Established:\n                    this.setupLocalMedia(session);\n                    this.setupRemoteMedia(session);\n                    if (this.delegate && this.delegate.onCallAnswered) {\n                        this.delegate.onCallAnswered(session);\n                    }\n                    break;\n                case SessionState.Terminating:\n                // fall through\n                case SessionState.Terminated:\n                    // This will already have executed if/when we fall\n                    // through from Terminating and thus the managed\n                    // session may already have been cleaned up.\n                    if (this.sessionExists(session)) {\n                        this.cleanupMedia(session);\n                        this.sessionRemove(session);\n                        if (this.delegate && this.delegate.onCallHangup) {\n                            this.delegate.onCallHangup(session);\n                        }\n                    }\n                    break;\n                default:\n                    throw new Error(\"Unknown session state.\");\n            }\n        });\n        // TODO: Any existing onInfo or onRefer delegate gets clobbered here.\n        // Setup delegate\n        session.delegate = session.delegate || {};\n        session.delegate.onInfo = (info) => {\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            var _a;\n            // FIXME: TODO: We should reject correctly...\n            //\n            // If a UA receives an INFO request associated with an Info Package that\n            // the UA has not indicated willingness to receive, the UA MUST send a\n            // 469 (Bad Info Package) response (see Section 11.6), which contains a\n            // Recv-Info header field with Info Packages for which the UA is willing\n            // to receive INFO requests.\n            // https://tools.ietf.org/html/rfc6086#section-4.2.2\n            // No delegate\n            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === undefined) {\n                info.reject();\n                return;\n            }\n            // Invalid content type\n            const contentType = info.request.getHeader(\"content-type\");\n            if (!contentType || !/^application\\/dtmf-relay/i.exec(contentType)) {\n                info.reject();\n                return;\n            }\n            // Invalid body\n            const body = info.request.body.split(\"\\r\\n\", 2);\n            if (body.length !== 2) {\n                info.reject();\n                return;\n            }\n            // Invalid tone\n            let tone;\n            const toneRegExp = /^(Signal\\s*?=\\s*?)([0-9A-D#*]{1})(\\s)?.*/;\n            if (body[0] !== undefined && toneRegExp.test(body[0])) {\n                tone = body[0].replace(toneRegExp, \"$2\");\n            }\n            if (!tone) {\n                info.reject();\n                return;\n            }\n            // Invalid duration\n            let duration;\n            const durationRegExp = /^(Duration\\s?=\\s?)([0-9]{1,4})(\\s)?.*/;\n            if (body[1] !== undefined && durationRegExp.test(body[1])) {\n                duration = parseInt(body[1].replace(durationRegExp, \"$2\"), 10);\n            }\n            if (!duration) {\n                info.reject();\n                return;\n            }\n            info\n                .accept()\n                .then(() => {\n                if (this.delegate && this.delegate.onCallDTMFReceived) {\n                    if (!tone || !duration) {\n                        throw new Error(\"Tone or duration undefined.\");\n                    }\n                    this.delegate.onCallDTMFReceived(session, tone, duration);\n                }\n            })\n                .catch((error) => {\n                this.logger.error(error.message);\n            });\n        };\n        session.delegate.onRefer = (referral) => {\n            referral\n                .accept()\n                .then(() => this.sendInvite(referral.makeInviter(referralInviterOptions), referralInviterOptions))\n                .catch((error) => {\n                this.logger.error(error.message);\n            });\n        };\n    }\n    /**\n     * Periodically send OPTIONS pings and disconnect when a ping fails.\n     * @param requestURI - Request URI to target\n     * @param fromURI - From URI\n     * @param toURI - To URI\n     */\n    optionsPingRun(requestURI, fromURI, toURI) {\n        // Guard against nvalid interval\n        if (this.options.optionsPingInterval < 1) {\n            throw new Error(\"Invalid options ping interval.\");\n        }\n        // Guard against sending a ping when there is one outstanading\n        if (this.optionsPingRunning) {\n            return;\n        }\n        this.optionsPingRunning = true;\n        // Setup next ping to run in future\n        this.optionsPingTimeout = setTimeout(() => {\n            this.optionsPingTimeout = undefined;\n            // If ping succeeds...\n            const onPingSuccess = () => {\n                // record success or failure\n                this.optionsPingFailure = false;\n                // if we are still running, queue up the next ping\n                if (this.optionsPingRunning) {\n                    this.optionsPingRunning = false;\n                    this.optionsPingRun(requestURI, fromURI, toURI);\n                }\n            };\n            // If ping fails...\n            const onPingFailure = () => {\n                this.logger.error(\"OPTIONS ping failed\");\n                // record success or failure\n                this.optionsPingFailure = true;\n                // stop running\n                this.optionsPingRunning = false;\n                // disconnect the transport\n                this.userAgent.transport.disconnect().catch((error) => this.logger.error(error));\n            };\n            // Create an OPTIONS request message\n            const core = this.userAgent.userAgentCore;\n            const message = core.makeOutgoingRequestMessage(\"OPTIONS\", requestURI, fromURI, toURI, {});\n            // Send the request message\n            this.optionsPingRequest = core.request(message, {\n                onAccept: () => {\n                    this.optionsPingRequest = undefined;\n                    onPingSuccess();\n                },\n                onReject: (response) => {\n                    this.optionsPingRequest = undefined;\n                    // Ping fails on following responses...\n                    // - 408 Request Timeout (no response was received)\n                    // - 503 Service Unavailable (a transport layer error occured)\n                    if (response.message.statusCode === 408 || response.message.statusCode === 503) {\n                        onPingFailure();\n                    }\n                    else {\n                        onPingSuccess();\n                    }\n                }\n            });\n        }, this.options.optionsPingInterval * 1000);\n    }\n    /**\n     * Start sending OPTIONS pings.\n     */\n    optionsPingStart() {\n        this.logger.log(`OPTIONS pings started`);\n        // Create the URIs needed to send OPTIONS pings\n        let requestURI, fromURI, toURI;\n        if (this.options.optionsPingRequestURI) {\n            // Use whatever specific RURI is provided.\n            requestURI = UserAgent.makeURI(this.options.optionsPingRequestURI);\n            if (!requestURI) {\n                throw new Error(\"Failed to create Request URI.\");\n            }\n            // Use the user agent's contact URI for From and To URIs\n            fromURI = this.userAgent.contact.uri.clone();\n            toURI = this.userAgent.contact.uri.clone();\n        }\n        else if (this.options.aor) {\n            // Otherwise use the AOR provided to target the assocated registrar server.\n            const uri = UserAgent.makeURI(this.options.aor);\n            if (!uri) {\n                throw new Error(\"Failed to create URI.\");\n            }\n            requestURI = uri.clone();\n            requestURI.user = undefined; // target the registrar server\n            fromURI = uri.clone();\n            toURI = uri.clone();\n        }\n        else {\n            this.logger.error(\"You have enabled sending OPTIONS pings and as such you must provide either \" +\n                \"a) an AOR to register, or b) an RURI to use for the target of the OPTIONS ping requests. \");\n            return;\n        }\n        // Send the OPTIONS pings\n        this.optionsPingRun(requestURI, fromURI, toURI);\n    }\n    /**\n     * Stop sending OPTIONS pings.\n     */\n    optionsPingStop() {\n        this.logger.log(`OPTIONS pings stopped`);\n        this.optionsPingRunning = false;\n        this.optionsPingFailure = false;\n        if (this.optionsPingRequest) {\n            this.optionsPingRequest.dispose();\n            this.optionsPingRequest = undefined;\n        }\n        if (this.optionsPingTimeout) {\n            clearTimeout(this.optionsPingTimeout);\n            this.optionsPingTimeout = undefined;\n        }\n    }\n    /** Helper function to init send then send invite. */\n    async sendInvite(inviter, inviterOptions, inviterInviteOptions) {\n        // Initialize our session\n        this.initSession(inviter, inviterOptions);\n        // Send the INVITE\n        return inviter.invite(inviterInviteOptions).then(() => {\n            this.logger.log(`[${inviter.id}] Sent INVITE`);\n        });\n    }\n    /** Helper function to add a session to the ones we are managing. */\n    sessionAdd(session) {\n        const managedSession = this.options.managedSessionFactory(this, session);\n        this.managedSessions.push(managedSession);\n    }\n    /** Helper function to check if the session is one we are managing. */\n    sessionExists(session) {\n        return this.sessionManaged(session) !== undefined;\n    }\n    /** Helper function to check if the session is one we are managing. */\n    sessionManaged(session) {\n        return this.managedSessions.find((el) => el.session.id === session.id);\n    }\n    /** Helper function to remoce a session from the ones we are managing. */\n    sessionRemove(session) {\n        this.managedSessions = this.managedSessions.filter((el) => el.session.id !== session.id);\n    }\n    /**\n     * Puts Session on hold.\n     * @param session - The session to set.\n     * @param hold - Hold on if true, off if false.\n     */\n    async setHold(session, hold) {\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        // Just resolve if we are already in correct state\n        if (this.isHeld(session) === hold) {\n            return Promise.resolve();\n        }\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        }\n        const options = {\n            requestDelegate: {\n                onAccept: () => {\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = hold;\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) {\n                            this.delegate.onCallHold(session, managedSession.held);\n                        }\n                    }\n                },\n                onReject: () => {\n                    this.logger.warn(`[${session.id}] Re-invite request was rejected`);\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = !hold; // this was preemptively set so undo on failure\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) {\n                            this.delegate.onCallHold(session, managedSession.held);\n                        }\n                    }\n                }\n            }\n        };\n        // Session properties used to pass options to the SessionDescriptionHandler:\n        //\n        // 1) Session.sessionDescriptionHandlerOptions\n        //    SDH options for the initial INVITE transaction.\n        //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n        //\n        // 2) Session.sessionDescriptionHandlerOptionsReInvite\n        //    SDH options for re-INVITE transactions.\n        //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Session.invite().\n        const sessionDescriptionHandlerOptions = session.sessionDescriptionHandlerOptionsReInvite;\n        sessionDescriptionHandlerOptions.hold = hold;\n        session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n        // Preemptively and optimistically set held state (but do not call delegate).\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session is undefiend.\");\n        }\n        managedSession.held = hold;\n        // Send re-INVITE\n        return session\n            .invite(options)\n            .then(() => {\n            // Preemptively enable/disable tracks\n            const managedSession = this.sessionManaged(session);\n            if (managedSession !== undefined) {\n                this.enableReceiverTracks(session, !managedSession.held);\n                this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n            }\n        })\n            .catch((error) => {\n            managedSession.held = !hold; // was preemptively set so undo on failure\n            if (error instanceof RequestPendingError) {\n                this.logger.error(`[${session.id}] A hold request is already in progress.`);\n            }\n            throw error;\n        });\n    }\n    /**\n     * Puts Session on mute.\n     * @param session - The session to mute.\n     * @param mute - Mute on if true, off if false.\n     */\n    setMute(session, mute) {\n        if (!this.sessionExists(session)) {\n            this.logger.warn(`[${session.id}] A session is required to enabled/disable media tracks`);\n            return;\n        }\n        if (session.state !== SessionState.Established) {\n            this.logger.warn(`[${session.id}] An established session is required to enable/disable media tracks`);\n            return;\n        }\n        const managedSession = this.sessionManaged(session);\n        if (managedSession !== undefined) {\n            managedSession.muted = mute;\n            this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n        }\n    }\n    /** Helper function to attach local media to html elements. */\n    setupLocalMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session does not exist.\");\n        }\n        // Get the local media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaLocal = typeof this.options.media.local === \"function\" ? this.options.media.local(session) : this.options.media.local;\n        managedSession.mediaLocal = mediaLocal;\n        const mediaElement = mediaLocal === null || mediaLocal === void 0 ? void 0 : mediaLocal.video;\n        if (mediaElement) {\n            const localStream = this.getLocalMediaStream(session);\n            if (!localStream) {\n                throw new Error(\"Local media stream undefiend.\");\n            }\n            mediaElement.srcObject = localStream;\n            mediaElement.volume = 0;\n            mediaElement.play().catch((error) => {\n                this.logger.error(`[${session.id}] Failed to play local media`);\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /** Helper function to attach remote media to html elements. */\n    setupRemoteMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session does not exist.\");\n        }\n        // Get the remote media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaRemote = typeof this.options.media.remote === \"function\" ? this.options.media.remote(session) : this.options.media.remote;\n        managedSession.mediaRemote = mediaRemote;\n        const mediaElement = (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.video) || (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.audio);\n        if (mediaElement) {\n            const remoteStream = this.getRemoteMediaStream(session);\n            if (!remoteStream) {\n                throw new Error(\"Remote media stream undefiend.\");\n            }\n            mediaElement.autoplay = true; // Safari hack, because you cannot call .play() from a non user action\n            mediaElement.srcObject = remoteStream;\n            mediaElement.play().catch((error) => {\n                this.logger.error(`[${session.id}] Failed to play remote media`);\n                this.logger.error(error.message);\n            });\n            remoteStream.onaddtrack = () => {\n                this.logger.log(`Remote media onaddtrack`);\n                mediaElement.load(); // Safari hack, as it doesn't work otheriwse\n                mediaElement.play().catch((error) => {\n                    this.logger.error(`[${session.id}] Failed to play remote media`);\n                    this.logger.error(error.message);\n                });\n            };\n        }\n    }\n    /**\n     * End a session.\n     * @param session - The session to terminate.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when Session is terminated.\n     */\n    async terminate(session) {\n        this.logger.log(`[${session.id}] Terminating...`);\n        switch (session.state) {\n            case SessionState.Initial:\n                if (session instanceof Inviter) {\n                    return session.cancel().then(() => {\n                        this.logger.log(`[${session.id}] Inviter never sent INVITE (canceled)`);\n                    });\n                }\n                else if (session instanceof Invitation) {\n                    return session.reject().then(() => {\n                        this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                    });\n                }\n                else {\n                    throw new Error(\"Unknown session type.\");\n                }\n            case SessionState.Establishing:\n                if (session instanceof Inviter) {\n                    return session.cancel().then(() => {\n                        this.logger.log(`[${session.id}] Inviter canceled (sent CANCEL)`);\n                    });\n                }\n                else if (session instanceof Invitation) {\n                    return session.reject().then(() => {\n                        this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                    });\n                }\n                else {\n                    throw new Error(\"Unknown session type.\");\n                }\n            case SessionState.Established:\n                return session.bye().then(() => {\n                    this.logger.log(`[${session.id}] Session ended (sent BYE)`);\n                });\n            case SessionState.Terminating:\n                break;\n            case SessionState.Terminated:\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.log(`[${session.id}] Terminating in state ${session.state}, no action taken`);\n        return Promise.resolve();\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { fromBodyLegacy, getBody } from \"../core/messages/body.js\";\nimport { SignalingState } from \"../core/session/session.js\";\nimport { Timers } from \"../core/timers.js\";\nimport { TransactionStateError } from \"../core/exceptions/transaction-state-error.js\";\nimport { getReasonPhrase } from \"../core/messages/utils.js\";\nimport { Cancel } from \"./cancel.js\";\nimport { ContentTypeUnsupportedError } from \"./exceptions/content-type-unsupported.js\";\nimport { SessionDescriptionHandlerError } from \"./exceptions/session-description-handler.js\";\nimport { SessionTerminatedError } from \"./exceptions/session-terminated.js\";\nimport { Session } from \"./session.js\";\nimport { SessionState } from \"./session-state.js\";\nimport { SIPExtension } from \"./user-agent-options.js\";\n/**\n * An invitation is an offer to establish a {@link Session} (incoming INVITE).\n * @public\n */\nexport class Invitation extends Session {\n    /** @internal */\n    constructor(userAgent, incomingInviteRequest) {\n        super(userAgent);\n        this.incomingInviteRequest = incomingInviteRequest;\n        /** True if dispose() has been called. */\n        this.disposed = false;\n        /** INVITE will be rejected if not accepted within a certain period time. */\n        this.expiresTimer = undefined;\n        /** True if this Session has been Terminated due to a CANCEL request. */\n        this.isCanceled = false;\n        /** Are reliable provisional responses required or supported. */\n        this.rel100 = \"none\";\n        /** The current RSeq header value. */\n        this.rseq = Math.floor(Math.random() * 10000);\n        /** INVITE will be rejected if final response not sent in a certain period time. */\n        this.userNoAnswerTimer = undefined;\n        /** True if waiting for a PRACK before sending a 200 Ok. */\n        this.waitingForPrack = false;\n        this.logger = userAgent.getLogger(\"sip.Invitation\");\n        const incomingRequestMessage = this.incomingInviteRequest.message;\n        // Set 100rel if necessary\n        const requireHeader = incomingRequestMessage.getHeader(\"require\");\n        if (requireHeader && requireHeader.toLowerCase().includes(\"100rel\")) {\n            this.rel100 = \"required\";\n        }\n        const supportedHeader = incomingRequestMessage.getHeader(\"supported\");\n        if (supportedHeader && supportedHeader.toLowerCase().includes(\"100rel\")) {\n            this.rel100 = \"supported\";\n        }\n        // FIXME: HACK: This is a hack to port an existing behavior.\n        // Set the toTag on the incoming request message to the toTag which\n        // will be used in the response to the incoming request!!!\n        // The behavior being ported appears to be a hack itself,\n        // so this is a hack to port a hack. At least one test spec\n        // relies on it (which is yet another hack).\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        incomingRequestMessage.toTag = incomingInviteRequest.toTag;\n        if (typeof incomingRequestMessage.toTag !== \"string\") {\n            throw new TypeError(\"toTag should have been a string.\");\n        }\n        // The following mapping values are RECOMMENDED:\n        // ...\n        // 19 no answer from the user              480 Temporarily unavailable\n        // https://tools.ietf.org/html/rfc3398#section-7.2.4.1\n        this.userNoAnswerTimer = setTimeout(() => {\n            incomingInviteRequest.reject({ statusCode: 480 });\n            this.stateTransition(SessionState.Terminated);\n        }, this.userAgent.configuration.noAnswerTimeout ? this.userAgent.configuration.noAnswerTimeout * 1000 : 60000);\n        // 1. If the request is an INVITE that contains an Expires header\n        // field, the UAS core sets a timer for the number of seconds\n        // indicated in the header field value.  When the timer fires, the\n        // invitation is considered to be expired.  If the invitation\n        // expires before the UAS has generated a final response, a 487\n        // (Request Terminated) response SHOULD be generated.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1\n        if (incomingRequestMessage.hasHeader(\"expires\")) {\n            const expires = Number(incomingRequestMessage.getHeader(\"expires\") || 0) * 1000;\n            this.expiresTimer = setTimeout(() => {\n                if (this.state === SessionState.Initial) {\n                    incomingInviteRequest.reject({ statusCode: 487 });\n                    this.stateTransition(SessionState.Terminated);\n                }\n            }, expires);\n        }\n        // Session parent properties\n        const assertedIdentity = this.request.getHeader(\"P-Asserted-Identity\");\n        if (assertedIdentity) {\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(assertedIdentity);\n        }\n        this._contact = this.userAgent.contact.toString();\n        const contentDisposition = incomingRequestMessage.parseHeader(\"Content-Disposition\");\n        if (contentDisposition && contentDisposition.type === \"render\") {\n            this._renderbody = incomingRequestMessage.body;\n            this._rendertype = incomingRequestMessage.getHeader(\"Content-Type\");\n        }\n        // Identifier\n        this._id = incomingRequestMessage.callId + incomingRequestMessage.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        // Clear timers\n        if (this.expiresTimer) {\n            clearTimeout(this.expiresTimer);\n            this.expiresTimer = undefined;\n        }\n        if (this.userNoAnswerTimer) {\n            clearTimeout(this.userNoAnswerTimer);\n            this.userNoAnswerTimer = undefined;\n        }\n        // If accept() is still waiting for a PRACK, make sure it rejects\n        this.prackNeverArrived();\n        // If the final response for the initial INVITE not yet been sent, reject it\n        switch (this.state) {\n            case SessionState.Initial:\n                return this.reject().then(() => super.dispose());\n            case SessionState.Establishing:\n                return this.reject().then(() => super.dispose());\n            case SessionState.Established:\n                return super.dispose();\n            case SessionState.Terminating:\n                return super.dispose();\n            case SessionState.Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * If true, a first provisional response after the 100 Trying\n     * will be sent automatically. This is false it the UAC required\n     * reliable provisional responses (100rel in Require header) or\n     * the user agent configuration has specified to not send an\n     * initial response, otherwise it is true. The provisional is sent by\n     * calling `progress()` without any options.\n     */\n    get autoSendAnInitialProvisionalResponse() {\n        return this.rel100 !== \"required\" && this.userAgent.configuration.sendInitialProvisionalResponse;\n    }\n    /**\n     * Initial incoming INVITE request message body.\n     */\n    get body() {\n        return this.incomingInviteRequest.message.body;\n    }\n    /**\n     * The identity of the local user.\n     */\n    get localIdentity() {\n        return this.request.to;\n    }\n    /**\n     * The identity of the remote user.\n     */\n    get remoteIdentity() {\n        return this.request.from;\n    }\n    /**\n     * Initial incoming INVITE request message.\n     */\n    get request() {\n        return this.incomingInviteRequest.message;\n    }\n    /**\n     * Accept the invitation.\n     *\n     * @remarks\n     * Accept the incoming INVITE request to start a Session.\n     * Replies to the INVITE request with a 200 Ok response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * This method may reject for a variety of reasons including\n     * the receipt of a CANCEL request before `accept` is able\n     * to construct a response.\n     * @param options - Options bucket.\n     */\n    accept(options = {}) {\n        this.logger.log(\"Invitation.accept\");\n        // validate state\n        if (this.state !== SessionState.Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // transition state\n        this.stateTransition(SessionState.Establishing);\n        return (this.sendAccept(options)\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            .then(({ message, session }) => {\n            session.delegate = {\n                onAck: (ackRequest) => this.onAckRequest(ackRequest),\n                onAckTimeout: () => this.onAckTimeout(),\n                onBye: (byeRequest) => this.onByeRequest(byeRequest),\n                onInfo: (infoRequest) => this.onInfoRequest(infoRequest),\n                onInvite: (inviteRequest) => this.onInviteRequest(inviteRequest),\n                onMessage: (messageRequest) => this.onMessageRequest(messageRequest),\n                onNotify: (notifyRequest) => this.onNotifyRequest(notifyRequest),\n                onPrack: (prackRequest) => this.onPrackRequest(prackRequest),\n                onRefer: (referRequest) => this.onReferRequest(referRequest)\n            };\n            this._dialog = session;\n            this.stateTransition(SessionState.Established);\n            // TODO: Reconsider this \"automagic\" send of a BYE to replacee behavior.\n            // This behavior has been ported forward from legacy versions.\n            if (this._replacee) {\n                this._replacee._bye();\n            }\n        })\n            .catch((error) => this.handleResponseError(error)));\n    }\n    /**\n     * Indicate progress processing the invitation.\n     *\n     * @remarks\n     * Report progress to the the caller.\n     * Replies to the INVITE request with a 1xx provisional response.\n     * Resolves once the response sent, otherwise rejects.\n     * @param options - Options bucket.\n     */\n    progress(options = {}) {\n        this.logger.log(\"Invitation.progress\");\n        // validate state\n        if (this.state !== SessionState.Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Ported\n        const statusCode = options.statusCode || 180;\n        if (statusCode < 100 || statusCode > 199) {\n            throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // After the first reliable provisional response for a request has been\n        // acknowledged, the UAS MAY send additional reliable provisional\n        // responses.  The UAS MUST NOT send a second reliable provisional\n        // response until the first is acknowledged.  After the first, it is\n        // RECOMMENDED that the UAS not send an additional reliable provisional\n        // response until the previous is acknowledged.  The first reliable\n        // provisional response receives special treatment because it conveys\n        // the initial sequence number.  If additional reliable provisional\n        // responses were sent before the first was acknowledged, the UAS could\n        // not be certain these were received in order.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) {\n            this.logger.warn(\"Unexpected call for progress while waiting for prack, ignoring\");\n            return Promise.resolve();\n        }\n        // Trying provisional response\n        if (options.statusCode === 100) {\n            return this.sendProgressTrying()\n                .then(() => {\n                return;\n            })\n                .catch((error) => this.handleResponseError(error));\n        }\n        // Standard provisional response\n        if (!(this.rel100 === \"required\") &&\n            !(this.rel100 === \"supported\" && options.rel100) &&\n            !(this.rel100 === \"supported\" && this.userAgent.configuration.sipExtension100rel === SIPExtension.Required)) {\n            return this.sendProgress(options)\n                .then(() => {\n                return;\n            })\n                .catch((error) => this.handleResponseError(error));\n        }\n        // Reliable provisional response\n        return this.sendProgressReliableWaitForPrack(options)\n            .then(() => {\n            return;\n        })\n            .catch((error) => this.handleResponseError(error));\n    }\n    /**\n     * Reject the invitation.\n     *\n     * @remarks\n     * Replies to the INVITE request with a 4xx, 5xx, or 6xx final response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * The expectation is that this method is used to reject an INVITE request.\n     * That is indeed the case - a call to `progress` followed by `reject` is\n     * a typical way to \"decline\" an incoming INVITE request. However it may\n     * also be called after calling `accept` (but only before it completes)\n     * which will reject the call and cause `accept` to reject.\n     * @param options - Options bucket.\n     */\n    reject(options = {}) {\n        this.logger.log(\"Invitation.reject\");\n        // validate state\n        if (this.state !== SessionState.Initial && this.state !== SessionState.Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        const statusCode = options.statusCode || 480;\n        const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : getReasonPhrase(statusCode);\n        const extraHeaders = options.extraHeaders || [];\n        if (statusCode < 300 || statusCode > 699) {\n            throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        }\n        const body = options.body ? fromBodyLegacy(options.body) : undefined;\n        // FIXME: Need to redirect to someplace\n        statusCode < 400\n            ? this.incomingInviteRequest.redirect([], { statusCode, reasonPhrase, extraHeaders, body })\n            : this.incomingInviteRequest.reject({ statusCode, reasonPhrase, extraHeaders, body });\n        this.stateTransition(SessionState.Terminated);\n        return Promise.resolve();\n    }\n    /**\n     * Handle CANCEL request.\n     *\n     * @param message - CANCEL message.\n     * @internal\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    _onCancel(message) {\n        this.logger.log(\"Invitation._onCancel\");\n        // validate state\n        if (this.state !== SessionState.Initial && this.state !== SessionState.Establishing) {\n            this.logger.error(`CANCEL received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onCancel) {\n            const cancel = new Cancel(message);\n            this.delegate.onCancel(cancel);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // reject INVITE with 487 status code\n        this.incomingInviteRequest.reject({ statusCode: 487 });\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Helper function to handle offer/answer in a PRACK.\n     */\n    handlePrackOfferAnswer(request) {\n        if (!this.dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        // If the PRACK doesn't have an offer/answer, nothing to be done.\n        const body = getBody(request.message);\n        if (!body || body.contentDisposition !== \"session\") {\n            return Promise.resolve(undefined);\n        }\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        // If the UAC receives a reliable provisional response with an offer\n        // (this would occur if the UAC sent an INVITE without an offer, in\n        // which case the first reliable provisional response will contain the\n        // offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        // a reliable provisional response with an answer, it MAY generate an\n        // additional offer in the PRACK.  If the UAS receives a PRACK with an\n        // offer, it MUST place the answer in the 2xx to the PRACK.\n        // https://tools.ietf.org/html/rfc3262#section-5\n        switch (this.dialog.signalingState) {\n            case SignalingState.Initial:\n                // State should never be reached as first reliable provisional response must have answer/offer.\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case SignalingState.Stable:\n                // Receved answer.\n                return this.setAnswer(body, options).then(() => undefined);\n            case SignalingState.HaveLocalOffer:\n                // State should never be reached as local offer would be answered by this PRACK\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case SignalingState.HaveRemoteOffer:\n                // Received offer, generate answer.\n                return this.setOfferAndGetAnswer(body, options);\n            case SignalingState.Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * A handler for errors which occur while attempting to send 1xx and 2xx responses.\n     * In all cases, an attempt is made to reject the request if it is still outstanding.\n     * And while there are a variety of things which can go wrong and we log something here\n     * for all errors, there are a handful of common exceptions we pay some extra attention to.\n     * @param error - The error which occurred.\n     */\n    handleResponseError(error) {\n        let statusCode = 480; // \"Temporarily Unavailable\"\n        // Log Error message\n        if (error instanceof Error) {\n            this.logger.error(error.message);\n        }\n        else {\n            // We don't actually know what a session description handler implementation might throw our way,\n            // and more generally as a last resort catch all, just assume we are getting an \"unknown\" and log it.\n            this.logger.error(error);\n        }\n        // Log Exception message\n        if (error instanceof ContentTypeUnsupportedError) {\n            this.logger.error(\"A session description handler occurred while sending response (content type unsupported\");\n            statusCode = 415; // \"Unsupported Media Type\"\n        }\n        else if (error instanceof SessionDescriptionHandlerError) {\n            this.logger.error(\"A session description handler occurred while sending response\");\n        }\n        else if (error instanceof SessionTerminatedError) {\n            this.logger.error(\"Session ended before response could be formulated and sent (while waiting for PRACK)\");\n        }\n        else if (error instanceof TransactionStateError) {\n            this.logger.error(\"Session changed state before response could be formulated and sent\");\n        }\n        // Reject if still in \"initial\" or \"establishing\" state.\n        if (this.state === SessionState.Initial || this.state === SessionState.Establishing) {\n            try {\n                this.incomingInviteRequest.reject({ statusCode });\n                this.stateTransition(SessionState.Terminated);\n            }\n            catch (e) {\n                this.logger.error(\"An error occurred attempting to reject the request while handling another error\");\n                throw e; // This is not a good place to be...\n            }\n        }\n        // FIXME: TODO:\n        // Here we are squelching the throwing of errors due to an race condition.\n        // We have an internal race between calling `accept()` and handling an incoming\n        // CANCEL request. As there is no good way currently to delegate the handling of\n        // these race errors to the caller of `accept()`, we are squelching the throwing\n        // of ALL errors when/if they occur after receiving a CANCEL to catch the ONE we know\n        // is a \"normal\" exceptional condition. While this is a completely reasonable approach,\n        // the decision should be left up to the library user. Furthermore, as we are eating\n        // ALL errors in this case, we are potentially (likely) hiding \"real\" errors which occur.\n        //\n        // Only rethrow error if the session has not been canceled.\n        if (this.isCanceled) {\n            this.logger.warn(\"An error occurred while attempting to formulate and send a response to an incoming INVITE.\" +\n                \" However a CANCEL was received and processed while doing so which can (and often does) result\" +\n                \" in errors occurring as the session terminates in the meantime. Said error is being ignored.\");\n            return;\n        }\n        throw error;\n    }\n    /**\n     * Callback for when ACK for a 2xx response is never received.\n     * @param session - Session the ACK never arrived for.\n     */\n    onAckTimeout() {\n        this.logger.log(\"Invitation.onAckTimeout\");\n        if (!this.dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        this.logger.log(\"No ACK received for an extended period of time, terminating session\");\n        this.dialog.bye();\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * A version of `accept` which resolves a session when the 200 Ok response is sent.\n     * @param options - Options bucket.\n     */\n    sendAccept(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const extraHeaders = options.extraHeaders || [];\n        // The UAS MAY send a final response to the initial request before\n        // having received PRACKs for all unacknowledged reliable provisional\n        // responses, unless the final response is 2xx and any of the\n        // unacknowledged reliable provisional responses contained a session\n        // description.  In that case, it MUST NOT send a final response until\n        // those provisional responses are acknowledged.  If the UAS does send a\n        // final response when reliable responses are still unacknowledged, it\n        // SHOULD NOT continue to retransmit the unacknowledged reliable\n        // provisional responses, but it MUST be prepared to process PRACK\n        // requests for those outstanding responses.  A UAS MUST NOT send new\n        // reliable provisional responses (as opposed to retransmissions of\n        // unacknowledged ones) after sending a final response to a request.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) {\n            return this.waitForArrivalOfPrack()\n                .then(() => clearTimeout(this.userNoAnswerTimer)) // Ported\n                .then(() => this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions))\n                .then((body) => this.incomingInviteRequest.accept({ statusCode: 200, body, extraHeaders }));\n        }\n        clearTimeout(this.userNoAnswerTimer); // Ported\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((body) => this.incomingInviteRequest.accept({ statusCode: 200, body, extraHeaders }));\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response is sent.\n     * @param options - Options bucket.\n     */\n    sendProgress(options = {}) {\n        const statusCode = options.statusCode || 180;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const body = options.body ? fromBodyLegacy(options.body) : undefined;\n        // The 183 (Session Progress) response is used to convey information\n        // about the progress of the call that is not otherwise classified.  The\n        // Reason-Phrase, header fields, or message body MAY be used to convey\n        // more details about the call progress.\n        // https://tools.ietf.org/html/rfc3261#section-21.1.5\n        // It is the de facto industry standard to utilize 183 with SDP to provide \"early media\".\n        // While it is unlikely someone would want to send a 183 without SDP, so it should be an option.\n        if (statusCode === 183 && !body) {\n            return this.sendProgressWithSDP(options);\n        }\n        try {\n            const progressResponse = this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body });\n            this._dialog = progressResponse.session;\n            return Promise.resolve(progressResponse);\n        }\n        catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response with sdp is sent.\n     * @param options - Options bucket.\n     */\n    sendProgressWithSDP(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Get an offer/answer and send a reply.\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions)\n            .then((body) => this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body }))\n            .then((progressResponse) => {\n            this._dialog = progressResponse.session;\n            return progressResponse;\n        });\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is sent.\n     * @param options - Options bucket.\n     */\n    sendProgressReliable(options = {}) {\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(\"Require: 100rel\");\n        options.extraHeaders.push(\"RSeq: \" + Math.floor(Math.random() * 10000));\n        return this.sendProgressWithSDP(options);\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is acknowledged.\n     * @param options - Options bucket.\n     */\n    sendProgressReliableWaitForPrack(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        extraHeaders.push(\"Require: 100rel\");\n        extraHeaders.push(\"RSeq: \" + this.rseq++);\n        let body;\n        return new Promise((resolve, reject) => {\n            this.waitingForPrack = true;\n            this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions)\n                .then((offerAnswer) => {\n                body = offerAnswer;\n                return this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body });\n            })\n                .then((progressResponse) => {\n                this._dialog = progressResponse.session;\n                let prackRequest;\n                let prackResponse;\n                progressResponse.session.delegate = {\n                    onPrack: (request) => {\n                        prackRequest = request;\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(prackWaitTimeoutTimer);\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(rel1xxRetransmissionTimer);\n                        if (!this.waitingForPrack) {\n                            return;\n                        }\n                        this.waitingForPrack = false;\n                        this.handlePrackOfferAnswer(prackRequest)\n                            .then((prackResponseBody) => {\n                            try {\n                                prackResponse = prackRequest.accept({ statusCode: 200, body: prackResponseBody });\n                                this.prackArrived();\n                                resolve({ prackRequest, prackResponse, progressResponse });\n                            }\n                            catch (error) {\n                                reject(error);\n                            }\n                        })\n                            .catch((error) => reject(error));\n                    }\n                };\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const prackWaitTimeout = () => {\n                    if (!this.waitingForPrack) {\n                        return;\n                    }\n                    this.waitingForPrack = false;\n                    this.logger.warn(\"No PRACK received, rejecting INVITE.\");\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    clearTimeout(rel1xxRetransmissionTimer);\n                    this.reject({ statusCode: 504 })\n                        .then(() => reject(new SessionTerminatedError()))\n                        .catch((error) => reject(error));\n                };\n                const prackWaitTimeoutTimer = setTimeout(prackWaitTimeout, Timers.T1 * 64);\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const rel1xxRetransmission = () => {\n                    try {\n                        this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body });\n                    }\n                    catch (error) {\n                        this.waitingForPrack = false;\n                        reject(error);\n                        return;\n                    }\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, (timeout *= 2));\n                };\n                let timeout = Timers.T1;\n                let rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, timeout);\n            })\n                .catch((error) => {\n                this.waitingForPrack = false;\n                reject(error);\n            });\n        });\n    }\n    /**\n     * A version of `progress` which resolves when a 100 Trying provisional response is sent.\n     */\n    sendProgressTrying() {\n        try {\n            const progressResponse = this.incomingInviteRequest.trying();\n            return Promise.resolve(progressResponse);\n        }\n        catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * When attempting to accept the INVITE, an invitation waits\n     * for any outstanding PRACK to arrive before sending the 200 Ok.\n     * It will be waiting on this Promise to resolve which lets it know\n     * the PRACK has arrived and it may proceed to send the 200 Ok.\n     */\n    waitForArrivalOfPrack() {\n        if (this.waitingForPrackPromise) {\n            throw new Error(\"Already waiting for PRACK\");\n        }\n        this.waitingForPrackPromise = new Promise((resolve, reject) => {\n            this.waitingForPrackResolve = resolve;\n            this.waitingForPrackReject = reject;\n        });\n        return this.waitingForPrackPromise;\n    }\n    /**\n     * Here we are resolving the promise which in turn will cause\n     * the accept to proceed (it may still fail for other reasons, but...).\n     */\n    prackArrived() {\n        if (this.waitingForPrackResolve) {\n            this.waitingForPrackResolve();\n        }\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n    /**\n     * Here we are rejecting the promise which in turn will cause\n     * the accept to fail and the session to transition to \"terminated\".\n     */\n    prackNeverArrived() {\n        if (this.waitingForPrackReject) {\n            this.waitingForPrackReject(new SessionTerminatedError());\n        }\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n}\n","/* eslint-disable @typescript-eslint/no-namespace */\n/* eslint-disable no-inner-declarations */\nimport * as pegGrammar from \"./pegjs/dist/grammar.js\";\n/**\n * Grammar.\n * @internal\n */\nexport var Grammar;\n(function (Grammar) {\n    /**\n     * Parse.\n     * @param input -\n     * @param startRule -\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function parse(input, startRule) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const options = { startRule };\n        try {\n            pegGrammar.parse(input, options);\n        }\n        catch (e) {\n            options.data = -1;\n        }\n        return options.data;\n    }\n    Grammar.parse = parse;\n    /**\n     * Parse the given string and returns a SIP.NameAddrHeader instance or undefined if\n     * it is an invalid NameAddrHeader.\n     * @param name_addr_header -\n     */\n    function nameAddrHeaderParse(nameAddrHeader) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedNameAddrHeader = Grammar.parse(nameAddrHeader, \"Name_Addr_Header\");\n        return parsedNameAddrHeader !== -1 ? parsedNameAddrHeader : undefined;\n    }\n    Grammar.nameAddrHeaderParse = nameAddrHeaderParse;\n    /**\n     * Parse the given string and returns a SIP.URI instance or undefined if\n     * it is an invalid URI.\n     * @param uri -\n     */\n    function URIParse(uri) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedUri = Grammar.parse(uri, \"SIP_URI\");\n        return parsedUri !== -1 ? parsedUri : undefined;\n    }\n    Grammar.URIParse = URIParse;\n})(Grammar = Grammar || (Grammar = {}));\n","import { NameAddrHeader } from \"../../name-addr-header.js\";\nimport { URI } from \"../../uri.js\";\nfunction peg$padEnd(str, targetLength, padString) {\n    padString = padString || ' ';\n    if (str.length > targetLength) {\n        return str;\n    }\n    targetLength -= str.length;\n    padString += padString.repeat(targetLength);\n    return str + padString.slice(0, targetLength);\n}\nexport class SyntaxError extends Error {\n    constructor(message, expected, found, location) {\n        super();\n        this.message = message;\n        this.expected = expected;\n        this.found = found;\n        this.location = location;\n        this.name = \"SyntaxError\";\n        if (typeof Object.setPrototypeOf === \"function\") {\n            Object.setPrototypeOf(this, SyntaxError.prototype);\n        }\n        else {\n            this.__proto__ = SyntaxError.prototype;\n        }\n        if (typeof Error.captureStackTrace === \"function\") {\n            Error.captureStackTrace(this, SyntaxError);\n        }\n    }\n    static buildMessage(expected, found) {\n        function hex(ch) {\n            return ch.charCodeAt(0).toString(16).toUpperCase();\n        }\n        function literalEscape(s) {\n            return s\n                .replace(/\\\\/g, \"\\\\\\\\\")\n                .replace(/\"/g, \"\\\\\\\"\")\n                .replace(/\\0/g, \"\\\\0\")\n                .replace(/\\t/g, \"\\\\t\")\n                .replace(/\\n/g, \"\\\\n\")\n                .replace(/\\r/g, \"\\\\r\")\n                .replace(/[\\x00-\\x0F]/g, (ch) => \"\\\\x0\" + hex(ch))\n                .replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch) => \"\\\\x\" + hex(ch));\n        }\n        function classEscape(s) {\n            return s\n                .replace(/\\\\/g, \"\\\\\\\\\")\n                .replace(/\\]/g, \"\\\\]\")\n                .replace(/\\^/g, \"\\\\^\")\n                .replace(/-/g, \"\\\\-\")\n                .replace(/\\0/g, \"\\\\0\")\n                .replace(/\\t/g, \"\\\\t\")\n                .replace(/\\n/g, \"\\\\n\")\n                .replace(/\\r/g, \"\\\\r\")\n                .replace(/[\\x00-\\x0F]/g, (ch) => \"\\\\x0\" + hex(ch))\n                .replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch) => \"\\\\x\" + hex(ch));\n        }\n        function describeExpectation(expectation) {\n            switch (expectation.type) {\n                case \"literal\":\n                    return \"\\\"\" + literalEscape(expectation.text) + \"\\\"\";\n                case \"class\":\n                    const escapedParts = expectation.parts.map((part) => {\n                        return Array.isArray(part)\n                            ? classEscape(part[0]) + \"-\" + classEscape(part[1])\n                            : classEscape(part);\n                    });\n                    return \"[\" + (expectation.inverted ? \"^\" : \"\") + escapedParts + \"]\";\n                case \"any\":\n                    return \"any character\";\n                case \"end\":\n                    return \"end of input\";\n                case \"other\":\n                    return expectation.description;\n            }\n        }\n        function describeExpected(expected1) {\n            const descriptions = expected1.map(describeExpectation);\n            let i;\n            let j;\n            descriptions.sort();\n            if (descriptions.length > 0) {\n                for (i = 1, j = 1; i < descriptions.length; i++) {\n                    if (descriptions[i - 1] !== descriptions[i]) {\n                        descriptions[j] = descriptions[i];\n                        j++;\n                    }\n                }\n                descriptions.length = j;\n            }\n            switch (descriptions.length) {\n                case 1:\n                    return descriptions[0];\n                case 2:\n                    return descriptions[0] + \" or \" + descriptions[1];\n                default:\n                    return descriptions.slice(0, -1).join(\", \")\n                        + \", or \"\n                        + descriptions[descriptions.length - 1];\n            }\n        }\n        function describeFound(found1) {\n            return found1 ? \"\\\"\" + literalEscape(found1) + \"\\\"\" : \"end of input\";\n        }\n        return \"Expected \" + describeExpected(expected) + \" but \" + describeFound(found) + \" found.\";\n    }\n    format(sources) {\n        let str = 'Error: ' + this.message;\n        if (this.location) {\n            let src = null;\n            let k;\n            for (k = 0; k < sources.length; k++) {\n                if (sources[k].source === this.location.source) {\n                    src = sources[k].text.split(/\\r\\n|\\n|\\r/g);\n                    break;\n                }\n            }\n            let s = this.location.start;\n            let loc = this.location.source + ':' + s.line + ':' + s.column;\n            if (src) {\n                let e = this.location.end;\n                let filler = peg$padEnd('', s.line.toString().length, ' ');\n                let line = src[s.line - 1];\n                let last = s.line === e.line ? e.column : line.length + 1;\n                str += '\\n --> ' + loc + '\\n' + filler + ' |\\n' + s.line + ' | ' + line + '\\n' + filler + ' | ' +\n                    peg$padEnd('', s.column - 1, ' ') +\n                    peg$padEnd('', last - s.column, '^');\n            }\n            else {\n                str += '\\n at ' + loc;\n            }\n        }\n        return str;\n    }\n}\nfunction peg$parse(input, options) {\n    options = options !== undefined ? options : {};\n    const peg$FAILED = {};\n    const peg$source = options.grammarSource;\n    const peg$startRuleIndices = { Contact: 119, Name_Addr_Header: 156, Record_Route: 176, Request_Response: 81, SIP_URI: 45, Subscription_State: 186, Supported: 191, Require: 182, Via: 194, absoluteURI: 84, Call_ID: 118, Content_Disposition: 130, Content_Length: 135, Content_Type: 136, CSeq: 146, displayName: 122, Event: 149, From: 151, host: 52, Max_Forwards: 154, Min_SE: 213, Proxy_Authenticate: 157, quoted_string: 40, Refer_To: 178, Replaces: 179, Session_Expires: 210, stun_URI: 217, To: 192, turn_URI: 223, uuid: 226, WWW_Authenticate: 209, challenge: 158, sipfrag: 230, Referred_By: 231 };\n    let peg$startRuleIndex = 119;\n    const peg$consts = [\n        \"\\r\\n\",\n        peg$literalExpectation(\"\\r\\n\", false),\n        /^[0-9]/,\n        peg$classExpectation([[\"0\", \"9\"]], false, false),\n        /^[a-zA-Z]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"]], false, false),\n        /^[0-9a-fA-F]/,\n        peg$classExpectation([[\"0\", \"9\"], [\"a\", \"f\"], [\"A\", \"F\"]], false, false),\n        /^[\\0-\\xFF]/,\n        peg$classExpectation([[\"\\0\", \"\\xFF\"]], false, false),\n        /^[\"]/,\n        peg$classExpectation([\"\\\"\"], false, false),\n        \" \",\n        peg$literalExpectation(\" \", false),\n        \"\\t\",\n        peg$literalExpectation(\"\\t\", false),\n        /^[a-zA-Z0-9]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"], [\"0\", \"9\"]], false, false),\n        \";\",\n        peg$literalExpectation(\";\", false),\n        \"/\",\n        peg$literalExpectation(\"/\", false),\n        \"?\",\n        peg$literalExpectation(\"?\", false),\n        \":\",\n        peg$literalExpectation(\":\", false),\n        \"@\",\n        peg$literalExpectation(\"@\", false),\n        \"&\",\n        peg$literalExpectation(\"&\", false),\n        \"=\",\n        peg$literalExpectation(\"=\", false),\n        \"+\",\n        peg$literalExpectation(\"+\", false),\n        \"$\",\n        peg$literalExpectation(\"$\", false),\n        \",\",\n        peg$literalExpectation(\",\", false),\n        \"-\",\n        peg$literalExpectation(\"-\", false),\n        \"_\",\n        peg$literalExpectation(\"_\", false),\n        \".\",\n        peg$literalExpectation(\".\", false),\n        \"!\",\n        peg$literalExpectation(\"!\", false),\n        \"~\",\n        peg$literalExpectation(\"~\", false),\n        \"*\",\n        peg$literalExpectation(\"*\", false),\n        \"'\",\n        peg$literalExpectation(\"'\", false),\n        \"(\",\n        peg$literalExpectation(\"(\", false),\n        \")\",\n        peg$literalExpectation(\")\", false),\n        \"%\",\n        peg$literalExpectation(\"%\", false),\n        function () { return \" \"; },\n        function () { return ':'; },\n        /^[!-~]/,\n        peg$classExpectation([[\"!\", \"~\"]], false, false),\n        /^[\\x80-\\uFFFF]/,\n        peg$classExpectation([[\"\\x80\", \"\\uFFFF\"]], false, false),\n        /^[\\x80-\\xBF]/,\n        peg$classExpectation([[\"\\x80\", \"\\xBF\"]], false, false),\n        /^[a-f]/,\n        peg$classExpectation([[\"a\", \"f\"]], false, false),\n        \"`\",\n        peg$literalExpectation(\"`\", false),\n        \"<\",\n        peg$literalExpectation(\"<\", false),\n        \">\",\n        peg$literalExpectation(\">\", false),\n        \"\\\\\",\n        peg$literalExpectation(\"\\\\\", false),\n        \"[\",\n        peg$literalExpectation(\"[\", false),\n        \"]\",\n        peg$literalExpectation(\"]\", false),\n        \"{\",\n        peg$literalExpectation(\"{\", false),\n        \"}\",\n        peg$literalExpectation(\"}\", false),\n        function () { return \"*\"; },\n        function () { return \"/\"; },\n        function () { return \"=\"; },\n        function () { return \"(\"; },\n        function () { return \")\"; },\n        function () { return \">\"; },\n        function () { return \"<\"; },\n        function () { return \",\"; },\n        function () { return \";\"; },\n        function () { return \":\"; },\n        function () { return \"\\\"\"; },\n        /^[!-']/,\n        peg$classExpectation([[\"!\", \"'\"]], false, false),\n        /^[*-[]/,\n        peg$classExpectation([[\"*\", \"[\"]], false, false),\n        /^[\\]-~]/,\n        peg$classExpectation([[\"]\", \"~\"]], false, false),\n        function (contents) {\n            return contents;\n        },\n        /^[#-[]/,\n        peg$classExpectation([[\"#\", \"[\"]], false, false),\n        /^[\\0-\\t]/,\n        peg$classExpectation([[\"\\0\", \"\\t\"]], false, false),\n        /^[\\v-\\f]/,\n        peg$classExpectation([[\"\\v\", \"\\f\"]], false, false),\n        /^[\\x0E-\\x7F]/,\n        peg$classExpectation([[\"\\x0E\", \"\\x7F\"]], false, false),\n        function () {\n            options = options || { data: {} };\n            options.data.uri = new URI(options.data.scheme, options.data.user, options.data.host, options.data.port);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.uri = new URI(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n            delete options.data.uri_params;\n            if (options.startRule === 'SIP_URI') {\n                options.data = options.data.uri;\n            }\n        },\n        \"sips\",\n        peg$literalExpectation(\"sips\", true),\n        \"sip\",\n        peg$literalExpectation(\"sip\", true),\n        function (uri_scheme) {\n            options = options || { data: {} };\n            options.data.scheme = uri_scheme;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.user = decodeURIComponent(text().slice(0, -1));\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.password = text();\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host = text();\n            return options.data.host;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'domain';\n            return text();\n        },\n        /^[a-zA-Z0-9_\\-]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"], [\"0\", \"9\"], \"_\", \"-\"], false, false),\n        /^[a-zA-Z0-9\\-]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"], [\"0\", \"9\"], \"-\"], false, false),\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'IPv6';\n            return text();\n        },\n        \"::\",\n        peg$literalExpectation(\"::\", false),\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'IPv6';\n            return text();\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'IPv4';\n            return text();\n        },\n        \"25\",\n        peg$literalExpectation(\"25\", false),\n        /^[0-5]/,\n        peg$classExpectation([[\"0\", \"5\"]], false, false),\n        \"2\",\n        peg$literalExpectation(\"2\", false),\n        /^[0-4]/,\n        peg$classExpectation([[\"0\", \"4\"]], false, false),\n        \"1\",\n        peg$literalExpectation(\"1\", false),\n        /^[1-9]/,\n        peg$classExpectation([[\"1\", \"9\"]], false, false),\n        function (port) {\n            options = options || { data: {} };\n            port = parseInt(port.join(''));\n            options.data.port = port;\n            return port;\n        },\n        \"transport=\",\n        peg$literalExpectation(\"transport=\", true),\n        \"udp\",\n        peg$literalExpectation(\"udp\", true),\n        \"tcp\",\n        peg$literalExpectation(\"tcp\", true),\n        \"sctp\",\n        peg$literalExpectation(\"sctp\", true),\n        \"tls\",\n        peg$literalExpectation(\"tls\", true),\n        function (transport) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['transport'] = transport.toLowerCase();\n        },\n        \"user=\",\n        peg$literalExpectation(\"user=\", true),\n        \"phone\",\n        peg$literalExpectation(\"phone\", true),\n        \"ip\",\n        peg$literalExpectation(\"ip\", true),\n        function (user) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['user'] = user.toLowerCase();\n        },\n        \"method=\",\n        peg$literalExpectation(\"method=\", true),\n        function (method) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['method'] = method;\n        },\n        \"ttl=\",\n        peg$literalExpectation(\"ttl=\", true),\n        function (ttl) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            options.data.params['ttl'] = ttl;\n        },\n        \"maddr=\",\n        peg$literalExpectation(\"maddr=\", true),\n        function (maddr) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['maddr'] = maddr;\n        },\n        \"lr\",\n        peg$literalExpectation(\"lr\", true),\n        function () {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['lr'] = undefined;\n        },\n        function (param, value) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            if (value === null) {\n                value = undefined;\n            }\n            else {\n                value = value[1];\n            }\n            options.data.uri_params[param.toLowerCase()] = value;\n        },\n        function (hname, hvalue) {\n            hname = hname.join('').toLowerCase();\n            hvalue = hvalue.join('');\n            options = options || { data: {} };\n            if (!options.data.uri_headers)\n                options.data.uri_headers = {};\n            if (!options.data.uri_headers[hname]) {\n                options.data.uri_headers[hname] = [hvalue];\n            }\n            else {\n                options.data.uri_headers[hname].push(hvalue);\n            }\n        },\n        function () {\n            options = options || { data: {} };\n            // lots of tests fail if this isn't guarded...\n            if (options.startRule === 'Refer_To') {\n                options.data.uri = new URI(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n                delete options.data.scheme;\n                delete options.data.user;\n                delete options.data.host;\n                delete options.data.host_type;\n                delete options.data.port;\n                delete options.data.uri_params;\n            }\n        },\n        \"//\",\n        peg$literalExpectation(\"//\", false),\n        function () {\n            options = options || { data: {} };\n            options.data.scheme = text();\n        },\n        peg$literalExpectation(\"SIP\", true),\n        function () {\n            options = options || { data: {} };\n            options.data.sip_version = text();\n        },\n        \"INVITE\",\n        peg$literalExpectation(\"INVITE\", false),\n        \"ACK\",\n        peg$literalExpectation(\"ACK\", false),\n        \"VXACH\",\n        peg$literalExpectation(\"VXACH\", false),\n        \"OPTIONS\",\n        peg$literalExpectation(\"OPTIONS\", false),\n        \"BYE\",\n        peg$literalExpectation(\"BYE\", false),\n        \"CANCEL\",\n        peg$literalExpectation(\"CANCEL\", false),\n        \"REGISTER\",\n        peg$literalExpectation(\"REGISTER\", false),\n        \"SUBSCRIBE\",\n        peg$literalExpectation(\"SUBSCRIBE\", false),\n        \"NOTIFY\",\n        peg$literalExpectation(\"NOTIFY\", false),\n        \"REFER\",\n        peg$literalExpectation(\"REFER\", false),\n        \"PUBLISH\",\n        peg$literalExpectation(\"PUBLISH\", false),\n        function () {\n            options = options || { data: {} };\n            options.data.method = text();\n            return options.data.method;\n        },\n        function (status_code) {\n            options = options || { data: {} };\n            options.data.status_code = parseInt(status_code.join(''));\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.reason_phrase = text();\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = text();\n        },\n        function () {\n            var idx, length;\n            options = options || { data: {} };\n            length = options.data.multi_header.length;\n            for (idx = 0; idx < length; idx++) {\n                if (options.data.multi_header[idx].parsed === null) {\n                    options.data = null;\n                    break;\n                }\n            }\n            if (options.data !== null) {\n                options.data = options.data.multi_header;\n            }\n            else {\n                options.data = -1;\n            }\n        },\n        function () {\n            var header;\n            options = options || { data: {} };\n            if (!options.data.multi_header)\n                options.data.multi_header = [];\n            try {\n                header = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            }\n            catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({ 'position': peg$currPos,\n                'offset': location().start.offset,\n                'parsed': header\n            });\n        },\n        function (displayName) {\n            displayName = text().trim();\n            if (displayName[0] === '\\\"') {\n                displayName = displayName.substring(1, displayName.length - 1);\n            }\n            options = options || { data: {} };\n            options.data.displayName = displayName;\n        },\n        \"q\",\n        peg$literalExpectation(\"q\", true),\n        function (q) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            options.data.params['q'] = q;\n        },\n        \"expires\",\n        peg$literalExpectation(\"expires\", true),\n        function (expires) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            options.data.params['expires'] = expires;\n        },\n        function (delta_seconds) {\n            return parseInt(delta_seconds.join(''));\n        },\n        \"0\",\n        peg$literalExpectation(\"0\", false),\n        function () {\n            return parseFloat(text());\n        },\n        function (param, value) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            if (value === null) {\n                value = undefined;\n            }\n            else {\n                value = value[1];\n            }\n            options.data.params[param.toLowerCase()] = value;\n        },\n        \"render\",\n        peg$literalExpectation(\"render\", true),\n        \"session\",\n        peg$literalExpectation(\"session\", true),\n        \"icon\",\n        peg$literalExpectation(\"icon\", true),\n        \"alert\",\n        peg$literalExpectation(\"alert\", true),\n        function () {\n            options = options || { data: {} };\n            if (options.startRule === 'Content_Disposition') {\n                options.data.type = text().toLowerCase();\n            }\n        },\n        \"handling\",\n        peg$literalExpectation(\"handling\", true),\n        \"optional\",\n        peg$literalExpectation(\"optional\", true),\n        \"required\",\n        peg$literalExpectation(\"required\", true),\n        function (length) {\n            options = options || { data: {} };\n            options.data = parseInt(length.join(''));\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = text();\n        },\n        \"text\",\n        peg$literalExpectation(\"text\", true),\n        \"image\",\n        peg$literalExpectation(\"image\", true),\n        \"audio\",\n        peg$literalExpectation(\"audio\", true),\n        \"video\",\n        peg$literalExpectation(\"video\", true),\n        \"application\",\n        peg$literalExpectation(\"application\", true),\n        \"message\",\n        peg$literalExpectation(\"message\", true),\n        \"multipart\",\n        peg$literalExpectation(\"multipart\", true),\n        \"x-\",\n        peg$literalExpectation(\"x-\", true),\n        function (cseq_value) {\n            options = options || { data: {} };\n            options.data.value = parseInt(cseq_value.join(''));\n        },\n        function (expires) { options = options || { data: {} }; options.data = expires; },\n        function (event_type) {\n            options = options || { data: {} };\n            options.data.event = event_type.toLowerCase();\n        },\n        function () {\n            options = options || { data: {} };\n            var tag = options.data.tag;\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) {\n                options.data.setParam('tag', tag);\n            }\n        },\n        \"tag\",\n        peg$literalExpectation(\"tag\", true),\n        function (tag) { options = options || { data: {} }; options.data.tag = tag; },\n        function (forwards) {\n            options = options || { data: {} };\n            options.data = parseInt(forwards.join(''));\n        },\n        function (min_expires) { options = options || { data: {} }; options.data = min_expires; },\n        function () {\n            options = options || { data: {} };\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n        },\n        \"digest\",\n        peg$literalExpectation(\"Digest\", true),\n        \"realm\",\n        peg$literalExpectation(\"realm\", true),\n        function (realm) { options = options || { data: {} }; options.data.realm = realm; },\n        \"domain\",\n        peg$literalExpectation(\"domain\", true),\n        \"nonce\",\n        peg$literalExpectation(\"nonce\", true),\n        function (nonce) { options = options || { data: {} }; options.data.nonce = nonce; },\n        \"opaque\",\n        peg$literalExpectation(\"opaque\", true),\n        function (opaque) { options = options || { data: {} }; options.data.opaque = opaque; },\n        \"stale\",\n        peg$literalExpectation(\"stale\", true),\n        \"true\",\n        peg$literalExpectation(\"true\", true),\n        function () { options = options || { data: {} }; options.data.stale = true; },\n        \"false\",\n        peg$literalExpectation(\"false\", true),\n        function () { options = options || { data: {} }; options.data.stale = false; },\n        \"algorithm\",\n        peg$literalExpectation(\"algorithm\", true),\n        \"md5\",\n        peg$literalExpectation(\"MD5\", true),\n        \"md5-sess\",\n        peg$literalExpectation(\"MD5-sess\", true),\n        function (algorithm) {\n            options = options || { data: {} };\n            options.data.algorithm = algorithm.toUpperCase();\n        },\n        \"qop\",\n        peg$literalExpectation(\"qop\", true),\n        \"auth-int\",\n        peg$literalExpectation(\"auth-int\", true),\n        \"auth\",\n        peg$literalExpectation(\"auth\", true),\n        function (qop_value) {\n            options = options || { data: {} };\n            options.data.qop || (options.data.qop = []);\n            options.data.qop.push(qop_value.toLowerCase());\n        },\n        function (rack_value) {\n            options = options || { data: {} };\n            options.data.value = parseInt(rack_value.join(''));\n        },\n        function () {\n            var idx, length;\n            options = options || { data: {} };\n            length = options.data.multi_header.length;\n            for (idx = 0; idx < length; idx++) {\n                if (options.data.multi_header[idx].parsed === null) {\n                    options.data = null;\n                    break;\n                }\n            }\n            if (options.data !== null) {\n                options.data = options.data.multi_header;\n            }\n            else {\n                options.data = -1;\n            }\n        },\n        function () {\n            var header;\n            options = options || { data: {} };\n            if (!options.data.multi_header)\n                options.data.multi_header = [];\n            try {\n                header = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            }\n            catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({ 'position': peg$currPos,\n                'offset': location().start.offset,\n                'parsed': header\n            });\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n        },\n        function () {\n            options = options || { data: {} };\n            if (!(options.data.replaces_from_tag && options.data.replaces_to_tag)) {\n                options.data = -1;\n            }\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = {\n                call_id: options.data\n            };\n        },\n        \"from-tag\",\n        peg$literalExpectation(\"from-tag\", true),\n        function (from_tag) {\n            options = options || { data: {} };\n            options.data.replaces_from_tag = from_tag;\n        },\n        \"to-tag\",\n        peg$literalExpectation(\"to-tag\", true),\n        function (to_tag) {\n            options = options || { data: {} };\n            options.data.replaces_to_tag = to_tag;\n        },\n        \"early-only\",\n        peg$literalExpectation(\"early-only\", true),\n        function () {\n            options = options || { data: {} };\n            options.data.early_only = true;\n        },\n        function (head, r) { return r; },\n        function (head, tail) { return list(head, tail); },\n        function (value) {\n            options = options || { data: {} };\n            if (options.startRule === 'Require') {\n                options.data = value || [];\n            }\n        },\n        function (rseq_value) {\n            options = options || { data: {} };\n            options.data.value = parseInt(rseq_value.join(''));\n        },\n        \"active\",\n        peg$literalExpectation(\"active\", true),\n        \"pending\",\n        peg$literalExpectation(\"pending\", true),\n        \"terminated\",\n        peg$literalExpectation(\"terminated\", true),\n        function () {\n            options = options || { data: {} };\n            options.data.state = text();\n        },\n        \"reason\",\n        peg$literalExpectation(\"reason\", true),\n        function (reason) {\n            options = options || { data: {} };\n            if (typeof reason !== 'undefined')\n                options.data.reason = reason;\n        },\n        function (expires) {\n            options = options || { data: {} };\n            if (typeof expires !== 'undefined')\n                options.data.expires = expires;\n        },\n        \"retry_after\",\n        peg$literalExpectation(\"retry_after\", true),\n        function (retry_after) {\n            options = options || { data: {} };\n            if (typeof retry_after !== 'undefined')\n                options.data.retry_after = retry_after;\n        },\n        \"deactivated\",\n        peg$literalExpectation(\"deactivated\", true),\n        \"probation\",\n        peg$literalExpectation(\"probation\", true),\n        \"rejected\",\n        peg$literalExpectation(\"rejected\", true),\n        \"timeout\",\n        peg$literalExpectation(\"timeout\", true),\n        \"giveup\",\n        peg$literalExpectation(\"giveup\", true),\n        \"noresource\",\n        peg$literalExpectation(\"noresource\", true),\n        \"invariant\",\n        peg$literalExpectation(\"invariant\", true),\n        function (value) {\n            options = options || { data: {} };\n            if (options.startRule === 'Supported') {\n                options.data = value || [];\n            }\n        },\n        function () {\n            options = options || { data: {} };\n            var tag = options.data.tag;\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) {\n                options.data.setParam('tag', tag);\n            }\n        },\n        \"ttl\",\n        peg$literalExpectation(\"ttl\", true),\n        function (via_ttl_value) {\n            options = options || { data: {} };\n            options.data.ttl = via_ttl_value;\n        },\n        \"maddr\",\n        peg$literalExpectation(\"maddr\", true),\n        function (via_maddr) {\n            options = options || { data: {} };\n            options.data.maddr = via_maddr;\n        },\n        \"received\",\n        peg$literalExpectation(\"received\", true),\n        function (via_received) {\n            options = options || { data: {} };\n            options.data.received = via_received;\n        },\n        \"branch\",\n        peg$literalExpectation(\"branch\", true),\n        function (via_branch) {\n            options = options || { data: {} };\n            options.data.branch = via_branch;\n        },\n        \"rport\",\n        peg$literalExpectation(\"rport\", true),\n        function (response_port) {\n            options = options || { data: {} };\n            if (typeof response_port !== 'undefined')\n                options.data.rport = response_port.join('');\n        },\n        function (via_protocol) {\n            options = options || { data: {} };\n            options.data.protocol = via_protocol;\n        },\n        peg$literalExpectation(\"UDP\", true),\n        peg$literalExpectation(\"TCP\", true),\n        peg$literalExpectation(\"TLS\", true),\n        peg$literalExpectation(\"SCTP\", true),\n        function (via_transport) {\n            options = options || { data: {} };\n            options.data.transport = via_transport;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host = text();\n        },\n        function (via_sent_by_port) {\n            options = options || { data: {} };\n            options.data.port = parseInt(via_sent_by_port.join(''));\n        },\n        function (ttl) {\n            return parseInt(ttl.join(''));\n        },\n        function (deltaSeconds) {\n            options = options || { data: {} };\n            if (options.startRule === 'Session_Expires') {\n                options.data.deltaSeconds = deltaSeconds;\n            }\n        },\n        \"refresher\",\n        peg$literalExpectation(\"refresher\", false),\n        \"uas\",\n        peg$literalExpectation(\"uas\", false),\n        \"uac\",\n        peg$literalExpectation(\"uac\", false),\n        function (endpoint) {\n            options = options || { data: {} };\n            if (options.startRule === 'Session_Expires') {\n                options.data.refresher = endpoint;\n            }\n        },\n        function (deltaSeconds) {\n            options = options || { data: {} };\n            if (options.startRule === 'Min_SE') {\n                options.data = deltaSeconds;\n            }\n        },\n        \"stuns\",\n        peg$literalExpectation(\"stuns\", true),\n        \"stun\",\n        peg$literalExpectation(\"stun\", true),\n        function (scheme) {\n            options = options || { data: {} };\n            options.data.scheme = scheme;\n        },\n        function (host) {\n            options = options || { data: {} };\n            options.data.host = host;\n        },\n        \"?transport=\",\n        peg$literalExpectation(\"?transport=\", false),\n        \"turns\",\n        peg$literalExpectation(\"turns\", true),\n        \"turn\",\n        peg$literalExpectation(\"turn\", true),\n        function (transport) {\n            options = options || { data: {} };\n            options.data.transport = transport;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = text();\n        },\n        \"Referred-By\",\n        peg$literalExpectation(\"Referred-By\", false),\n        \"b\",\n        peg$literalExpectation(\"b\", false),\n        \"cid\",\n        peg$literalExpectation(\"cid\", false)\n    ];\n    const peg$bytecode = [\n        peg$decode(\"2 \\\"\\\"6 7!\"),\n        peg$decode(\"4\\\"\\\"\\\"5!7#\"),\n        peg$decode(\"4$\\\"\\\"5!7%\"),\n        peg$decode(\"4&\\\"\\\"5!7'\"),\n        peg$decode(\";'.# &;(\"),\n        peg$decode(\"4(\\\"\\\"5!7)\"),\n        peg$decode(\"4*\\\"\\\"5!7+\"),\n        peg$decode(\"2,\\\"\\\"6,7-\"),\n        peg$decode(\"2.\\\"\\\"6.7/\"),\n        peg$decode(\"40\\\"\\\"5!71\"),\n        peg$decode(\"22\\\"\\\"6273.\\x89 &24\\\"\\\"6475.} &26\\\"\\\"6677.q &28\\\"\\\"6879.e &2:\\\"\\\"6:7;.Y &2<\\\"\\\"6<7=.M &2>\\\"\\\"6>7?.A &2@\\\"\\\"6@7A.5 &2B\\\"\\\"6B7C.) &2D\\\"\\\"6D7E\"),\n        peg$decode(\";).# &;,\"),\n        peg$decode(\"2F\\\"\\\"6F7G.} &2H\\\"\\\"6H7I.q &2J\\\"\\\"6J7K.e &2L\\\"\\\"6L7M.Y &2N\\\"\\\"6N7O.M &2P\\\"\\\"6P7Q.A &2R\\\"\\\"6R7S.5 &2T\\\"\\\"6T7U.) &2V\\\"\\\"6V7W\"),\n        peg$decode(\"%%2X\\\"\\\"6X7Y/5#;#/,$;#/#$+#)(#'#(\\\"'#&'#/\\\"!&,)\"),\n        peg$decode(\"%%$;$0#*;$&/,#; /#$+\\\")(\\\"'#&'#.\\\" &\\\"/=#$;$/&#0#*;$&&&#/'$8\\\":Z\\\" )(\\\"'#&'#\"),\n        peg$decode(\";..\\\" &\\\"\"),\n        peg$decode(\"%$;'.# &;(0)*;'.# &;(&/?#28\\\"\\\"6879/0$;//'$8#:[# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%%$;2/&#0#*;2&&&#/g#$%$;.0#*;.&/,#;2/#$+\\\")(\\\"'#&'#0=*%$;.0#*;.&/,#;2/#$+\\\")(\\\"'#&'#&/#$+\\\")(\\\"'#&'#/\\\"!&,)\"),\n        peg$decode(\"4\\\\\\\"\\\"5!7].# &;3\"),\n        peg$decode(\"4^\\\"\\\"5!7_\"),\n        peg$decode(\"4`\\\"\\\"5!7a\"),\n        peg$decode(\";!.) &4b\\\"\\\"5!7c\"),\n        peg$decode(\"%$;).\\x95 &2F\\\"\\\"6F7G.\\x89 &2J\\\"\\\"6J7K.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O/\\x9E#0\\x9B*;).\\x95 &2F\\\"\\\"6F7G.\\x89 &2J\\\"\\\"6J7K.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O&&&#/\\\"!&,)\"),\n        peg$decode(\"%$;).\\x89 &2F\\\"\\\"6F7G.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O/\\x92#0\\x8F*;).\\x89 &2F\\\"\\\"6F7G.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O&&&#/\\\"!&,)\"),\n        peg$decode(\"2T\\\"\\\"6T7U.\\xE3 &2V\\\"\\\"6V7W.\\xD7 &2f\\\"\\\"6f7g.\\xCB &2h\\\"\\\"6h7i.\\xBF &2:\\\"\\\"6:7;.\\xB3 &2D\\\"\\\"6D7E.\\xA7 &22\\\"\\\"6273.\\x9B &28\\\"\\\"6879.\\x8F &2j\\\"\\\"6j7k.\\x83 &;&.} &24\\\"\\\"6475.q &2l\\\"\\\"6l7m.e &2n\\\"\\\"6n7o.Y &26\\\"\\\"6677.M &2>\\\"\\\"6>7?.A &2p\\\"\\\"6p7q.5 &2r\\\"\\\"6r7s.) &;'.# &;(\"),\n        peg$decode(\"%$;).\\u012B &2F\\\"\\\"6F7G.\\u011F &2J\\\"\\\"6J7K.\\u0113 &2L\\\"\\\"6L7M.\\u0107 &2X\\\"\\\"6X7Y.\\xFB &2P\\\"\\\"6P7Q.\\xEF &2H\\\"\\\"6H7I.\\xE3 &2@\\\"\\\"6@7A.\\xD7 &2d\\\"\\\"6d7e.\\xCB &2R\\\"\\\"6R7S.\\xBF &2N\\\"\\\"6N7O.\\xB3 &2T\\\"\\\"6T7U.\\xA7 &2V\\\"\\\"6V7W.\\x9B &2f\\\"\\\"6f7g.\\x8F &2h\\\"\\\"6h7i.\\x83 &28\\\"\\\"6879.w &2j\\\"\\\"6j7k.k &;&.e &24\\\"\\\"6475.Y &2l\\\"\\\"6l7m.M &2n\\\"\\\"6n7o.A &26\\\"\\\"6677.5 &2p\\\"\\\"6p7q.) &2r\\\"\\\"6r7s/\\u0134#0\\u0131*;).\\u012B &2F\\\"\\\"6F7G.\\u011F &2J\\\"\\\"6J7K.\\u0113 &2L\\\"\\\"6L7M.\\u0107 &2X\\\"\\\"6X7Y.\\xFB &2P\\\"\\\"6P7Q.\\xEF &2H\\\"\\\"6H7I.\\xE3 &2@\\\"\\\"6@7A.\\xD7 &2d\\\"\\\"6d7e.\\xCB &2R\\\"\\\"6R7S.\\xBF &2N\\\"\\\"6N7O.\\xB3 &2T\\\"\\\"6T7U.\\xA7 &2V\\\"\\\"6V7W.\\x9B &2f\\\"\\\"6f7g.\\x8F &2h\\\"\\\"6h7i.\\x83 &28\\\"\\\"6879.w &2j\\\"\\\"6j7k.k &;&.e &24\\\"\\\"6475.Y &2l\\\"\\\"6l7m.M &2n\\\"\\\"6n7o.A &26\\\"\\\"6677.5 &2p\\\"\\\"6p7q.) &2r\\\"\\\"6r7s&&&#/\\\"!&,)\"),\n        peg$decode(\"%;//?#2P\\\"\\\"6P7Q/0$;//'$8#:t# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#24\\\"\\\"6475/0$;//'$8#:u# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2>\\\"\\\"6>7?/0$;//'$8#:v# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2T\\\"\\\"6T7U/0$;//'$8#:w# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2V\\\"\\\"6V7W/0$;//'$8#:x# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%2h\\\"\\\"6h7i/0#;//'$8\\\":y\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;//6#2f\\\"\\\"6f7g/'$8\\\":z\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2D\\\"\\\"6D7E/0$;//'$8#:{# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#22\\\"\\\"6273/0$;//'$8#:|# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#28\\\"\\\"6879/0$;//'$8#:}# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//0#;&/'$8\\\":~\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;&/0#;//'$8\\\":~\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;=/T#$;G.) &;K.# &;F0/*;G.) &;K.# &;F&/,$;>/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"4\\x7F\\\"\\\"5!7\\x80.A &4\\x81\\\"\\\"5!7\\x82.5 &4\\x83\\\"\\\"5!7\\x84.) &;3.# &;.\"),\n        peg$decode(\"%%;//Q#;&/H$$;J.# &;K0)*;J.# &;K&/,$;&/#$+$)($'#(#'#(\\\"'#&'#/\\\"!&,)\"),\n        peg$decode(\"%;//]#;&/T$%$;J.# &;K0)*;J.# &;K&/\\\"!&,)/1$;&/($8$:\\x85$!!)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\";..G &2L\\\"\\\"6L7M.; &4\\x86\\\"\\\"5!7\\x87./ &4\\x83\\\"\\\"5!7\\x84.# &;3\"),\n        peg$decode(\"%2j\\\"\\\"6j7k/J#4\\x88\\\"\\\"5!7\\x89.5 &4\\x8A\\\"\\\"5!7\\x8B.) &4\\x8C\\\"\\\"5!7\\x8D/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;N/M#28\\\"\\\"6879/>$;O.\\\" &\\\"/0$;S/'$8$:\\x8E$ )($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;N/d#28\\\"\\\"6879/U$;O.\\\" &\\\"/G$;S/>$;_/5$;l.\\\" &\\\"/'$8&:\\x8F& )(&'#(%'#($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\x90\\\"\\\"5$7\\x91.) &3\\x92\\\"\\\"5#7\\x93/' 8!:\\x94!! )\"),\n        peg$decode(\"%;P/]#%28\\\"\\\"6879/,#;R/#$+\\\")(\\\"'#&'#.\\\" &\\\"/6$2:\\\"\\\"6:7;/'$8#:\\x95# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"$;+.) &;-.# &;Q/2#0/*;+.) &;-.# &;Q&&&#\"),\n        peg$decode(\"2<\\\"\\\"6<7=.q &2>\\\"\\\"6>7?.e &2@\\\"\\\"6@7A.Y &2B\\\"\\\"6B7C.M &2D\\\"\\\"6D7E.A &22\\\"\\\"6273.5 &26\\\"\\\"6677.) &24\\\"\\\"6475\"),\n        peg$decode(\"%$;+._ &;-.Y &2<\\\"\\\"6<7=.M &2>\\\"\\\"6>7?.A &2@\\\"\\\"6@7A.5 &2B\\\"\\\"6B7C.) &2D\\\"\\\"6D7E0e*;+._ &;-.Y &2<\\\"\\\"6<7=.M &2>\\\"\\\"6>7?.A &2@\\\"\\\"6@7A.5 &2B\\\"\\\"6B7C.) &2D\\\"\\\"6D7E&/& 8!:\\x96! )\"),\n        peg$decode(\"%;T/J#%28\\\"\\\"6879/,#;^/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;U.) &;\\\\.# &;X/& 8!:\\x97! )\"),\n        peg$decode(\"%$%;V/2#2J\\\"\\\"6J7K/#$+\\\")(\\\"'#&'#0<*%;V/2#2J\\\"\\\"6J7K/#$+\\\")(\\\"'#&'#&/D#;W/;$2J\\\"\\\"6J7K.\\\" &\\\"/'$8#:\\x98# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"$4\\x99\\\"\\\"5!7\\x9A/,#0)*4\\x99\\\"\\\"5!7\\x9A&&&#\"),\n        peg$decode(\"%4$\\\"\\\"5!7%/?#$4\\x9B\\\"\\\"5!7\\x9C0)*4\\x9B\\\"\\\"5!7\\x9C&/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%2l\\\"\\\"6l7m/?#;Y/6$2n\\\"\\\"6n7o/'$8#:\\x9D# )(#'#(\\\"'#&'#\"),\n        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peg$decode(\"%$;!/&#0#*;!&&&#/' 8!:\\u015D!! )\"),\n        peg$decode(\"%;\\xDB/Y#$%;B/,#;\\xDC/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xDC/#$+\\\")(\\\"'#&'#&/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%3\\u015E\\\"\\\"5&7\\u015F.; &3\\u0160\\\"\\\"5'7\\u0161./ &3\\u0162\\\"\\\"5*7\\u0163.# &;6/& 8!:\\u0164! )\"),\n        peg$decode(\"%3\\u0165\\\"\\\"5&7\\u0166/:#;</1$;\\xDD/($8#:\\u0167#! )(#'#(\\\"'#&'#.} &%3\\xF5\\\"\\\"5'7\\xF6/:#;</1$;\\x9E/($8#:\\u0168#! )(#'#(\\\"'#&'#.P &%3\\u0169\\\"\\\"5+7\\u016A/:#;</1$;\\x9E/($8#:\\u016B#! )(#'#(\\\"'#&'#.# &;\\xA0\"),\n        peg$decode(\"3\\u016C\\\"\\\"5+7\\u016D.k &3\\u016E\\\"\\\"5)7\\u016F._ &3\\u0170\\\"\\\"5(7\\u0171.S &3\\u0172\\\"\\\"5'7\\u0173.G &3\\u0174\\\"\\\"5&7\\u0175.; &3\\u0176\\\"\\\"5*7\\u0177./ &3\\u0178\\\"\\\"5)7\\u0179.# &;6\"),\n        peg$decode(\";1.\\\" &\\\"\"),\n        peg$decode(\"%%;6/k#$%;A/2#;6/)$8\\\":\\u015A\\\"\\\"$ )(\\\"'#&'#0<*%;A/2#;6/)$8\\\":\\u015A\\\"\\\"$ )(\\\"'#&'#&/)$8\\\":\\u015B\\\"\\\"! )(\\\"'#&'#.\\\" &\\\"/' 8!:\\u017A!! )\"),\n        peg$decode(\"%;L.# &;\\x99/]#$%;B/,#;\\xE1/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xE1/#$+\\\")(\\\"'#&'#&/'$8\\\":\\u017B\\\" )(\\\"'#&'#\"),\n        peg$decode(\";\\xB9.# &;\\xA0\"),\n        peg$decode(\"%;\\xE3/Y#$%;A/,#;\\xE3/#$+\\\")(\\\"'#&'#06*%;A/,#;\\xE3/#$+\\\")(\\\"'#&'#&/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;\\xEA/k#;./b$;\\xED/Y$$%;B/,#;\\xE4/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xE4/#$+\\\")(\\\"'#&'#&/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\";\\xE5.; &;\\xE6.5 &;\\xE7./ &;\\xE8.) &;\\xE9.# &;\\xA0\"),\n        peg$decode(\"%3\\u017C\\\"\\\"5#7\\u017D/:#;</1$;\\xF0/($8#:\\u017E#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u017F\\\"\\\"5%7\\u0180/:#;</1$;T/($8#:\\u0181#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u0182\\\"\\\"5(7\\u0183/F#;</=$;\\\\.) &;Y.# &;X/($8#:\\u0184#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u0185\\\"\\\"5&7\\u0186/:#;</1$;6/($8#:\\u0187#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u0188\\\"\\\"5%7\\u0189/A#;</8$$;!0#*;!&/($8#:\\u018A#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;\\xEB/G#;;/>$;6/5$;;/,$;\\xEC/#$+%)(%'#($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\x92\\\"\\\"5#7\\xD3.# &;6/' 8!:\\u018B!! )\"),\n        peg$decode(\"%3\\xB1\\\"\\\"5#7\\u018C.G &3\\xB3\\\"\\\"5#7\\u018D.; &3\\xB7\\\"\\\"5#7\\u018E./ &3\\xB5\\\"\\\"5$7\\u018F.# &;6/' 8!:\\u0190!! )\"),\n        peg$decode(\"%;\\xEE/D#%;C/,#;\\xEF/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;U.) &;\\\\.# &;X/& 8!:\\u0191! )\"),\n        peg$decode(\"%%;!.\\\" &\\\"/[#;!.\\\" &\\\"/M$;!.\\\" &\\\"/?$;!.\\\" &\\\"/1$;!.\\\" &\\\"/#$+%)(%'#($'#(#'#(\\\"'#&'#/' 8!:\\u0192!! )\"),\n        peg$decode(\"%%;!/?#;!.\\\" &\\\"/1$;!.\\\" &\\\"/#$+#)(#'#(\\\"'#&'#/' 8!:\\u0193!! )\"),\n        peg$decode(\";\\xBE\"),\n        peg$decode(\"%;\\x9E/^#$%;B/,#;\\xF3/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xF3/#$+\\\")(\\\"'#&'#&/($8\\\":\\u0194\\\"!!)(\\\"'#&'#\"),\n        peg$decode(\";\\xF4.# &;\\xA0\"),\n        peg$decode(\"%2\\u0195\\\"\\\"6\\u01957\\u0196/L#;</C$2\\u0197\\\"\\\"6\\u01977\\u0198.) &2\\u0199\\\"\\\"6\\u01997\\u019A/($8#:\\u019B#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;\\x9E/^#$%;B/,#;\\xA0/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xA0/#$+\\\")(\\\"'#&'#&/($8\\\":\\u019C\\\"!!)(\\\"'#&'#\"),\n        peg$decode(\"%;6/5#;0/,$;\\xF7/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"$;2.) &;4.# &;.0/*;2.) &;4.# &;.&\"),\n        peg$decode(\"$;%0#*;%&\"),\n        peg$decode(\"%;\\xFA/;#28\\\"\\\"6879/,$;\\xFB/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u019D\\\"\\\"5%7\\u019E.) &3\\u019F\\\"\\\"5$7\\u01A0/' 8!:\\u01A1!! )\"),\n        peg$decode(\"%;\\xFC/J#%28\\\"\\\"6879/,#;^/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;\\\\.) &;X.# &;\\x82/' 8!:\\u01A2!! )\"),\n        peg$decode(\";\\\".S &;!.M &2F\\\"\\\"6F7G.A &2J\\\"\\\"6J7K.5 &2H\\\"\\\"6H7I.) &2N\\\"\\\"6N7O\"),\n        peg$decode(\"2L\\\"\\\"6L7M.\\x95 &2B\\\"\\\"6B7C.\\x89 &2<\\\"\\\"6<7=.} &2R\\\"\\\"6R7S.q &2T\\\"\\\"6T7U.e &2V\\\"\\\"6V7W.Y &2P\\\"\\\"6P7Q.M &2@\\\"\\\"6@7A.A &2D\\\"\\\"6D7E.5 &22\\\"\\\"6273.) &2>\\\"\\\"6>7?\"),\n        peg$decode(\"%;\\u0100/b#28\\\"\\\"6879/S$;\\xFB/J$%2\\u01A3\\\"\\\"6\\u01A37\\u01A4/,#;\\xEC/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u01A5\\\"\\\"5%7\\u01A6.) &3\\u01A7\\\"\\\"5$7\\u01A8/' 8!:\\u01A1!! )\"),\n        peg$decode(\"%3\\xB1\\\"\\\"5#7\\xB2.6 &3\\xB3\\\"\\\"5#7\\xB4.* &$;+0#*;+&/' 8!:\\u01A9!! )\"),\n        peg$decode(\"%;\\u0104/\\x87#2F\\\"\\\"6F7G/x$;\\u0103/o$2F\\\"\\\"6F7G/`$;\\u0103/W$2F\\\"\\\"6F7G/H$;\\u0103/?$2F\\\"\\\"6F7G/0$;\\u0105/'$8):\\u01AA) )()'#(('#(''#(&'#(%'#($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;#/>#;#/5$;#/,$;#/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;\\u0103/,#;\\u0103/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;\\u0103/5#;\\u0103/,$;\\u0103/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;q/T#$;m0#*;m&/D$%; /,#;\\xF8/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%2\\u01AB\\\"\\\"6\\u01AB7\\u01AC.) &2\\u01AD\\\"\\\"6\\u01AD7\\u01AE/w#;0/n$;\\u0108/e$$%;B/2#;\\u0109.# &;\\xA0/#$+\\\")(\\\"'#&'#0<*%;B/2#;\\u0109.# &;\\xA0/#$+\\\")(\\\"'#&'#&/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\";\\x99.# &;L\"),\n        peg$decode(\"%2\\u01AF\\\"\\\"6\\u01AF7\\u01B0/5#;</,$;\\u010A/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;D/S#;,/J$2:\\\"\\\"6:7;/;$;,.# &;T/,$;E/#$+%)(%'#($'#(#'#(\\\"'#&'#\")\n    ];\n    let peg$currPos = 0;\n    let peg$savedPos = 0;\n    const peg$posDetailsCache = [{ line: 1, column: 1 }];\n    let peg$maxFailPos = 0;\n    let peg$maxFailExpected = [];\n    let peg$silentFails = 0;\n    let peg$result;\n    if (options.startRule !== undefined) {\n        if (!(options.startRule in peg$startRuleIndices)) {\n            throw new Error(\"Can't start parsing from rule \\\"\" + options.startRule + \"\\\".\");\n        }\n        peg$startRuleIndex = peg$startRuleIndices[options.startRule];\n    }\n    function text() {\n        return input.substring(peg$savedPos, peg$currPos);\n    }\n    function location() {\n        return peg$computeLocation(peg$savedPos, peg$currPos);\n    }\n    function expected(description, location1) {\n        location1 = location1 !== undefined\n            ? location1\n            : peg$computeLocation(peg$savedPos, peg$currPos);\n        throw peg$buildStructuredError([peg$otherExpectation(description)], input.substring(peg$savedPos, peg$currPos), location1);\n    }\n    function error(message, location1) {\n        location1 = location1 !== undefined\n            ? location1\n            : peg$computeLocation(peg$savedPos, peg$currPos);\n        throw peg$buildSimpleError(message, location1);\n    }\n    function peg$literalExpectation(text1, ignoreCase) {\n        return { type: \"literal\", text: text1, ignoreCase: ignoreCase };\n    }\n    function peg$classExpectation(parts, inverted, ignoreCase) {\n        return { type: \"class\", parts: parts, inverted: inverted, ignoreCase: ignoreCase };\n    }\n    function peg$anyExpectation() {\n        return { type: \"any\" };\n    }\n    function peg$endExpectation() {\n        return { type: \"end\" };\n    }\n    function peg$otherExpectation(description) {\n        return { type: \"other\", description: description };\n    }\n    function peg$computePosDetails(pos) {\n        let details = peg$posDetailsCache[pos];\n        let p;\n        if (details) {\n            return details;\n        }\n        else {\n            p = pos - 1;\n            while (!peg$posDetailsCache[p]) {\n                p--;\n            }\n            details = peg$posDetailsCache[p];\n            details = {\n                line: details.line,\n                column: details.column\n            };\n            while (p < pos) {\n                if (input.charCodeAt(p) === 10) {\n                    details.line++;\n                    details.column = 1;\n                }\n                else {\n                    details.column++;\n                }\n                p++;\n            }\n            peg$posDetailsCache[pos] = details;\n            return details;\n        }\n    }\n    function peg$computeLocation(startPos, endPos) {\n        const startPosDetails = peg$computePosDetails(startPos);\n        const endPosDetails = peg$computePosDetails(endPos);\n        return {\n            source: peg$source,\n            start: {\n                offset: startPos,\n                line: startPosDetails.line,\n                column: startPosDetails.column\n            },\n            end: {\n                offset: endPos,\n                line: endPosDetails.line,\n                column: endPosDetails.column\n            }\n        };\n    }\n    function peg$fail(expected1) {\n        if (peg$currPos < peg$maxFailPos) {\n            return;\n        }\n        if (peg$currPos > peg$maxFailPos) {\n            peg$maxFailPos = peg$currPos;\n            peg$maxFailExpected = [];\n        }\n        peg$maxFailExpected.push(expected1);\n    }\n    function peg$buildSimpleError(message, location1) {\n        return new SyntaxError(message, [], \"\", location1);\n    }\n    function peg$buildStructuredError(expected1, found, location1) {\n        return new SyntaxError(SyntaxError.buildMessage(expected1, found), expected1, found, location1);\n    }\n    function peg$decode(s) {\n        return s.split(\"\").map((ch) => ch.charCodeAt(0) - 32);\n    }\n    function peg$parseRule(index) {\n        const bc = peg$bytecode[index];\n        let ip = 0;\n        const ips = [];\n        let end = bc.length;\n        const ends = [];\n        const stack = [];\n        let params;\n        while (true) {\n            while (ip < end) {\n                switch (bc[ip]) {\n                    case 0:\n                        stack.push(peg$consts[bc[ip + 1]]);\n                        ip += 2;\n                        break;\n                    case 1:\n                        stack.push(undefined);\n                        ip++;\n                        break;\n                    case 2:\n                        stack.push(null);\n                        ip++;\n                        break;\n                    case 3:\n                        stack.push(peg$FAILED);\n                        ip++;\n                        break;\n                    case 4:\n                        stack.push([]);\n                        ip++;\n                        break;\n                    case 5:\n                        stack.push(peg$currPos);\n                        ip++;\n                        break;\n                    case 6:\n                        stack.pop();\n                        ip++;\n                        break;\n                    case 7:\n                        peg$currPos = stack.pop();\n                        ip++;\n                        break;\n                    case 8:\n                        stack.length -= bc[ip + 1];\n                        ip += 2;\n                        break;\n                    case 9:\n                        stack.splice(-2, 1);\n                        ip++;\n                        break;\n                    case 10:\n                        stack[stack.length - 2].push(stack.pop());\n                        ip++;\n                        break;\n                    case 11:\n                        stack.push(stack.splice(stack.length - bc[ip + 1], bc[ip + 1]));\n                        ip += 2;\n                        break;\n                    case 12:\n                        stack.push(input.substring(stack.pop(), peg$currPos));\n                        ip++;\n                        break;\n                    case 13:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (stack[stack.length - 1]) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 14:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (stack[stack.length - 1] === peg$FAILED) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 15:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (stack[stack.length - 1] !== peg$FAILED) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 16:\n                        if (stack[stack.length - 1] !== peg$FAILED) {\n                            ends.push(end);\n                            ips.push(ip);\n                            end = ip + 2 + bc[ip + 1];\n                            ip += 2;\n                        }\n                        else {\n                            ip += 2 + bc[ip + 1];\n                        }\n                        break;\n                    case 17:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (input.length > peg$currPos) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 18:\n                        ends.push(end);\n                        ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                        if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length) === peg$consts[bc[ip + 1]]) {\n                            end = ip + 4 + bc[ip + 2];\n                            ip += 4;\n                        }\n                        else {\n                            end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                            ip += 4 + bc[ip + 2];\n                        }\n                        break;\n                    case 19:\n                        ends.push(end);\n                        ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                        if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length).toLowerCase() === peg$consts[bc[ip + 1]]) {\n                            end = ip + 4 + bc[ip + 2];\n                            ip += 4;\n                        }\n                        else {\n                            end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                            ip += 4 + bc[ip + 2];\n                        }\n                        break;\n                    case 20:\n                        ends.push(end);\n                        ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                        if (peg$consts[bc[ip + 1]].test(input.charAt(peg$currPos))) {\n                            end = ip + 4 + bc[ip + 2];\n                            ip += 4;\n                        }\n                        else {\n                            end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                            ip += 4 + bc[ip + 2];\n                        }\n                        break;\n                    case 21:\n                        stack.push(input.substr(peg$currPos, bc[ip + 1]));\n                        peg$currPos += bc[ip + 1];\n                        ip += 2;\n                        break;\n                    case 22:\n                        stack.push(peg$consts[bc[ip + 1]]);\n                        peg$currPos += peg$consts[bc[ip + 1]].length;\n                        ip += 2;\n                        break;\n                    case 23:\n                        stack.push(peg$FAILED);\n                        if (peg$silentFails === 0) {\n                            peg$fail(peg$consts[bc[ip + 1]]);\n                        }\n                        ip += 2;\n                        break;\n                    case 24:\n                        peg$savedPos = stack[stack.length - 1 - bc[ip + 1]];\n                        ip += 2;\n                        break;\n                    case 25:\n                        peg$savedPos = peg$currPos;\n                        ip++;\n                        break;\n                    case 26:\n                        params = bc.slice(ip + 4, ip + 4 + bc[ip + 3])\n                            .map(function (p) { return stack[stack.length - 1 - p]; });\n                        stack.splice(stack.length - bc[ip + 2], bc[ip + 2], peg$consts[bc[ip + 1]].apply(null, params));\n                        ip += 4 + bc[ip + 3];\n                        break;\n                    case 27:\n                        stack.push(peg$parseRule(bc[ip + 1]));\n                        ip += 2;\n                        break;\n                    case 28:\n                        peg$silentFails++;\n                        ip++;\n                        break;\n                    case 29:\n                        peg$silentFails--;\n                        ip++;\n                        break;\n                    default:\n                        throw new Error(\"Invalid opcode: \" + bc[ip] + \".\");\n                }\n            }\n            if (ends.length > 0) {\n                end = ends.pop();\n                ip = ips.pop();\n            }\n            else {\n                break;\n            }\n        }\n        return stack[0];\n    }\n    options.data = {}; // Object to which header attributes will be assigned during parsing\n    function list(head, tail) {\n        return [head].concat(tail);\n    }\n    peg$result = peg$parseRule(peg$startRuleIndex);\n    if (peg$result !== peg$FAILED && peg$currPos === input.length) {\n        return peg$result;\n    }\n    else {\n        if (peg$result !== peg$FAILED && peg$currPos < input.length) {\n            peg$fail(peg$endExpectation());\n        }\n        throw peg$buildStructuredError(peg$maxFailExpected, peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null, peg$maxFailPos < input.length\n            ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1)\n            : peg$computeLocation(peg$maxFailPos, peg$maxFailPos));\n    }\n}\nexport const parse = peg$parse;\n","import { Parameters } from \"./parameters.js\";\n/**\n * Name Address SIP header.\n * @public\n */\nexport class NameAddrHeader extends Parameters {\n    /**\n     * Constructor\n     * @param uri -\n     * @param displayName -\n     * @param parameters -\n     */\n    constructor(uri, displayName, parameters) {\n        super(parameters);\n        this.uri = uri;\n        this._displayName = displayName;\n    }\n    get friendlyName() {\n        return this.displayName || this.uri.aor;\n    }\n    get displayName() { return this._displayName; }\n    set displayName(value) {\n        this._displayName = value;\n    }\n    clone() {\n        return new NameAddrHeader(this.uri.clone(), this._displayName, JSON.parse(JSON.stringify(this.parameters)));\n    }\n    toString() {\n        let body = (this.displayName || this.displayName === \"0\") ? '\"' + this.displayName + '\" ' : \"\";\n        body += \"<\" + this.uri.toString() + \">\";\n        for (const parameter in this.parameters) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (this.parameters.hasOwnProperty(parameter)) {\n                body += \";\" + parameter;\n                if (this.parameters[parameter] !== null) {\n                    body += \"=\" + this.parameters[parameter];\n                }\n            }\n        }\n        return body;\n    }\n}\n","/**\n * @internal\n */\nexport class Parameters {\n    constructor(parameters) {\n        this.parameters = {};\n        // for in is required here as the Grammar parser is adding to the prototype chain\n        for (const param in parameters) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (parameters.hasOwnProperty(param)) {\n                this.setParam(param, parameters[param]);\n            }\n        }\n    }\n    setParam(key, value) {\n        if (key) {\n            this.parameters[key.toLowerCase()] = (typeof value === \"undefined\" || value === null) ? null : value.toString();\n        }\n    }\n    getParam(key) {\n        if (key) {\n            return this.parameters[key.toLowerCase()];\n        }\n    }\n    hasParam(key) {\n        return !!(key && this.parameters[key.toLowerCase()] !== undefined);\n    }\n    deleteParam(key) {\n        key = key.toLowerCase();\n        if (this.hasParam(key)) {\n            const value = this.parameters[key];\n            delete this.parameters[key];\n            return value;\n        }\n    }\n    clearParams() {\n        this.parameters = {};\n    }\n}\n","/* eslint-disable @typescript-eslint/no-explicit-any */\nimport { Parameters } from \"./parameters.js\";\n/**\n * URI.\n * @public\n */\nexport class URI extends Parameters {\n    /**\n     * Constructor\n     * @param scheme -\n     * @param user -\n     * @param host -\n     * @param port -\n     * @param parameters -\n     * @param headers -\n     */\n    constructor(scheme = \"sip\", user, host, port, parameters, headers) {\n        super(parameters || {});\n        this.headers = {};\n        // Checks\n        if (!host) {\n            throw new TypeError('missing or invalid \"host\" parameter');\n        }\n        for (const header in headers) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (headers.hasOwnProperty(header)) {\n                this.setHeader(header, headers[header]);\n            }\n        }\n        // Raw URI\n        this.raw = {\n            scheme,\n            user,\n            host,\n            port\n        };\n        // Normalized URI\n        this.normal = {\n            scheme: scheme.toLowerCase(),\n            user,\n            host: host.toLowerCase(),\n            port\n        };\n    }\n    get scheme() { return this.normal.scheme; }\n    set scheme(value) {\n        this.raw.scheme = value;\n        this.normal.scheme = value.toLowerCase();\n    }\n    get user() { return this.normal.user; }\n    set user(value) {\n        this.normal.user = this.raw.user = value;\n    }\n    get host() { return this.normal.host; }\n    set host(value) {\n        this.raw.host = value;\n        this.normal.host = value.toLowerCase();\n    }\n    get aor() { return this.normal.user + \"@\" + this.normal.host; }\n    get port() { return this.normal.port; }\n    set port(value) {\n        this.normal.port = this.raw.port = value === 0 ? value : value;\n    }\n    setHeader(name, value) {\n        this.headers[this.headerize(name)] = (value instanceof Array) ? value : [value];\n    }\n    getHeader(name) {\n        if (name) {\n            return this.headers[this.headerize(name)];\n        }\n    }\n    hasHeader(name) {\n        // eslint-disable-next-line no-prototype-builtins\n        return !!name && !!this.headers.hasOwnProperty(this.headerize(name));\n    }\n    deleteHeader(header) {\n        header = this.headerize(header);\n        // eslint-disable-next-line no-prototype-builtins\n        if (this.headers.hasOwnProperty(header)) {\n            const value = this.headers[header];\n            delete this.headers[header];\n            return value;\n        }\n    }\n    clearHeaders() {\n        this.headers = {};\n    }\n    clone() {\n        return new URI(this._raw.scheme, this._raw.user || \"\", this._raw.host, this._raw.port, JSON.parse(JSON.stringify(this.parameters)), JSON.parse(JSON.stringify(this.headers)));\n    }\n    toRaw() {\n        return this._toString(this._raw);\n    }\n    toString() {\n        return this._toString(this._normal);\n    }\n    get _normal() { return this.normal; }\n    get _raw() { return this.raw; }\n    _toString(uri) {\n        let uriString = uri.scheme + \":\";\n        // add slashes if it's not a sip(s) URI\n        if (!uri.scheme.toLowerCase().match(\"^sips?$\")) {\n            uriString += \"//\";\n        }\n        if (uri.user) {\n            uriString += this.escapeUser(uri.user) + \"@\";\n        }\n        uriString += uri.host;\n        if (uri.port || uri.port === 0) {\n            uriString += \":\" + uri.port;\n        }\n        for (const parameter in this.parameters) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (this.parameters.hasOwnProperty(parameter)) {\n                uriString += \";\" + parameter;\n                if (this.parameters[parameter] !== null) {\n                    uriString += \"=\" + this.parameters[parameter];\n                }\n            }\n        }\n        const headers = [];\n        for (const header in this.headers) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (this.headers.hasOwnProperty(header)) {\n                // eslint-disable-next-line @typescript-eslint/no-for-in-array\n                for (const idx in this.headers[header]) {\n                    // eslint-disable-next-line no-prototype-builtins\n                    if (this.headers[header].hasOwnProperty(idx)) {\n                        headers.push(header + \"=\" + this.headers[header][idx]);\n                    }\n                }\n            }\n        }\n        if (headers.length > 0) {\n            uriString += \"?\" + headers.join(\"&\");\n        }\n        return uriString;\n    }\n    /*\n     * Hex-escape a SIP URI user.\n     * @private\n     * @param {String} user\n     */\n    escapeUser(user) {\n        let decodedUser;\n        // FIXME: This is called by toString above which should never throw, but\n        // decodeURIComponent can throw and I've seen one case in production where\n        // it did throw resulting in a cascading failure. This class should be\n        // fixed so that decodeURIComponent is not called at this point (in toString).\n        // The user should be decoded when the URI is constructor or some other\n        // place where we can catch the error before the URI is created or somesuch.\n        // eslint-disable-next-line no-useless-catch\n        try {\n            decodedUser = decodeURIComponent(user);\n        }\n        catch (error) {\n            throw error;\n        }\n        // Don't hex-escape ':' (%3A), '+' (%2B), '?' (%3F\"), '/' (%2F).\n        return encodeURIComponent(decodedUser)\n            .replace(/%3A/ig, \":\")\n            .replace(/%2B/ig, \"+\")\n            .replace(/%3F/ig, \"?\")\n            .replace(/%2F/ig, \"/\");\n    }\n    headerize(str) {\n        const exceptions = {\n            \"Call-Id\": \"Call-ID\",\n            \"Cseq\": \"CSeq\",\n            \"Min-Se\": \"Min-SE\",\n            \"Rack\": \"RAck\",\n            \"Rseq\": \"RSeq\",\n            \"Www-Authenticate\": \"WWW-Authenticate\",\n        };\n        const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n        const parts = name.length;\n        let hname = \"\";\n        for (let part = 0; part < parts; part++) {\n            if (part !== 0) {\n                hname += \"-\";\n            }\n            hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n        }\n        if (exceptions[hname]) {\n            hname = exceptions[hname];\n        }\n        return hname;\n    }\n}\n/**\n * Returns true if URIs are equivalent per RFC 3261 Section 19.1.4.\n * @param a - URI to compare\n * @param b - URI to compare\n *\n * @remarks\n * 19.1.4 URI Comparison\n * Some operations in this specification require determining whether two\n * SIP or SIPS URIs are equivalent.\n *\n * https://tools.ietf.org/html/rfc3261#section-19.1.4\n * @internal\n */\nexport function equivalentURI(a, b) {\n    // o  A SIP and SIPS URI are never equivalent.\n    if (a.scheme !== b.scheme) {\n        return false;\n    }\n    // o  Comparison of the userinfo of SIP and SIPS URIs is case-\n    //    sensitive.  This includes userinfo containing passwords or\n    //    formatted as telephone-subscribers.  Comparison of all other\n    //    components of the URI is case-insensitive unless explicitly\n    //    defined otherwise.\n    //\n    // o  The ordering of parameters and header fields is not significant\n    //    in comparing SIP and SIPS URIs.\n    //\n    // o  Characters other than those in the \"reserved\" set (see RFC 2396\n    //    [5]) are equivalent to their \"\"%\" HEX HEX\" encoding.\n    //\n    // o  An IP address that is the result of a DNS lookup of a host name\n    //    does not match that host name.\n    //\n    // o  For two URIs to be equal, the user, password, host, and port\n    //    components must match.\n    //\n    // A URI omitting the user component will not match a URI that\n    // includes one.  A URI omitting the password component will not\n    // match a URI that includes one.\n    //\n    // A URI omitting any component with a default value will not\n    // match a URI explicitly containing that component with its\n    // default value.  For instance, a URI omitting the optional port\n    // component will not match a URI explicitly declaring port 5060.\n    // The same is true for the transport-parameter, ttl-parameter,\n    // user-parameter, and method components.\n    //\n    // Defining sip:user@host to not be equivalent to\n    // sip:user@host:5060 is a change from RFC 2543.  When deriving\n    // addresses from URIs, equivalent addresses are expected from\n    // equivalent URIs.  The URI sip:user@host:5060 will always\n    // resolve to port 5060.  The URI sip:user@host may resolve to\n    // other ports through the DNS SRV mechanisms detailed in [4].\n    // FIXME: TODO:\n    // - character compared to hex encoding is not handled\n    // - password does not exist on URI currently\n    if (a.user !== b.user || a.host !== b.host || a.port !== b.port) {\n        return false;\n    }\n    // o  URI uri-parameter components are compared as follows:\n    function compareParameters(a, b) {\n        //  -  Any uri-parameter appearing in both URIs must match.\n        const parameterKeysA = Object.keys(a.parameters);\n        const parameterKeysB = Object.keys(b.parameters);\n        const intersection = parameterKeysA.filter(x => parameterKeysB.includes(x));\n        if (!intersection.every(key => a.parameters[key] === b.parameters[key])) {\n            return false;\n        }\n        //  -  A user, ttl, or method uri-parameter appearing in only one\n        //     URI never matches, even if it contains the default value.\n        if (![\"user\", \"ttl\", \"method\", \"transport\"].every(key => a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) {\n            return false;\n        }\n        //  -  A URI that includes an maddr parameter will not match a URI\n        //     that contains no maddr parameter.\n        if (![\"maddr\"].every(key => a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) {\n            return false;\n        }\n        //  -  All other uri-parameters appearing in only one URI are\n        //     ignored when comparing the URIs.\n        return true;\n    }\n    if (!compareParameters(a, b)) {\n        return false;\n    }\n    // o  URI header components are never ignored.  Any present header\n    //    component MUST be present in both URIs and match for the URIs\n    //    to match.  The matching rules are defined for each header field\n    //    in Section 20.\n    const headerKeysA = Object.keys(a.headers);\n    const headerKeysB = Object.keys(b.headers);\n    // No need to check if no headers\n    if (headerKeysA.length !== 0 || headerKeysB.length !== 0) {\n        // Must have same number of headers\n        if (headerKeysA.length !== headerKeysB.length) {\n            return false;\n        }\n        // Must have same headers\n        const intersection = headerKeysA.filter(x => headerKeysB.includes(x));\n        if (intersection.length !== headerKeysB.length) {\n            return false;\n        }\n        // FIXME: Not to spec. But perhaps not worth fixing?\n        // Must have same header values\n        // It seems too much to consider multiple headers with same name.\n        // It seems too much to compare two header params according to the rule of each header.\n        // We'll assume a single header and compare them string to string...\n        if (!intersection.every(key => a.headers[key].length && b.headers[key].length && a.headers[key][0] === b.headers[key][0])) {\n            return false;\n        }\n    }\n    return true;\n}\n","import { IncomingRequestMessage } from \"./incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"./incoming-response-message.js\";\nimport { OutgoingRequestMessage } from \"./outgoing-request-message.js\";\n// If the Content-Disposition header field is missing, bodies of\n// Content-Type application/sdp imply the disposition \"session\", while\n// other content types imply \"render\".\n// https://tools.ietf.org/html/rfc3261#section-13.2.1\nfunction contentTypeToContentDisposition(contentType) {\n    if (contentType === \"application/sdp\") {\n        return \"session\";\n    }\n    else {\n        return \"render\";\n    }\n}\n/**\n * Create a Body given a legacy body type.\n * @param bodyLegacy - Body Object\n * @internal\n */\nexport function fromBodyLegacy(bodyLegacy) {\n    const content = typeof bodyLegacy === \"string\" ? bodyLegacy : bodyLegacy.body;\n    const contentType = typeof bodyLegacy === \"string\" ? \"application/sdp\" : bodyLegacy.contentType;\n    const contentDisposition = contentTypeToContentDisposition(contentType);\n    const body = { contentDisposition, contentType, content };\n    return body;\n}\n/**\n * User-Defined Type Guard for Body.\n * @param body - Body to check.\n * @internal\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nexport function isBody(body) {\n    return body &&\n        typeof body.content === \"string\" &&\n        typeof body.contentType === \"string\" &&\n        body.contentDisposition === undefined\n        ? true\n        : typeof body.contentDisposition === \"string\";\n}\n/**\n * Given a message, get a normalized body.\n * The content disposition is inferred if not set.\n * @param message - The message.\n * @internal\n */\nexport function getBody(message) {\n    let contentDisposition;\n    let contentType;\n    let content;\n    // We're in UAS role, receiving incoming request\n    if (message instanceof IncomingRequestMessage) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, receiving incoming response\n    if (message instanceof IncomingResponseMessage) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, sending outgoing request\n    if (message instanceof OutgoingRequestMessage) {\n        if (message.body) {\n            contentDisposition = message.getHeader(\"Content-Disposition\");\n            contentType = message.getHeader(\"Content-Type\");\n            if (typeof message.body === \"string\") {\n                // FIXME: OutgoingRequest should not allow a \"string\" body without a \"Content-Type\" header.\n                if (!contentType) {\n                    throw new Error(\"Header content type header does not equal body content type.\");\n                }\n                content = message.body;\n            }\n            else {\n                // FIXME: OutgoingRequest should not allow the \"Content-Type\" header not to match th body content type\n                if (contentType && contentType !== message.body.contentType) {\n                    throw new Error(\"Header content type header does not equal body content type.\");\n                }\n                contentType = message.body.contentType;\n                content = message.body.body;\n            }\n        }\n    }\n    // We're in UAS role, sending outgoing response\n    if (isBody(message)) {\n        contentDisposition = message.contentDisposition;\n        contentType = message.contentType;\n        content = message.content;\n    }\n    // No content, no body.\n    if (!content) {\n        return undefined;\n    }\n    if (contentType && !contentDisposition) {\n        contentDisposition = contentTypeToContentDisposition(contentType);\n    }\n    if (!contentDisposition) {\n        throw new Error(\"Content disposition undefined.\");\n    }\n    if (!contentType) {\n        throw new Error(\"Content type undefined.\");\n    }\n    return {\n        contentDisposition,\n        contentType,\n        content\n    };\n}\n","import { IncomingMessage } from \"./incoming-message.js\";\n/**\n * Incoming request message.\n * @public\n */\nexport class IncomingRequestMessage extends IncomingMessage {\n    constructor() {\n        super();\n    }\n}\n","import { Grammar } from \"../../grammar/grammar.js\";\nimport { headerize } from \"./utils.js\";\n/**\n * Incoming message.\n * @public\n */\nexport class IncomingMessage {\n    constructor() {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.headers = {};\n    }\n    /**\n     * Insert a header of the given name and value into the last position of the\n     * header array.\n     * @param name - header name\n     * @param value - header value\n     */\n    addHeader(name, value) {\n        const header = { raw: value };\n        name = headerize(name);\n        if (this.headers[name]) {\n            this.headers[name].push(header);\n        }\n        else {\n            this.headers[name] = [header];\n        }\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */\n    getHeader(name) {\n        const header = this.headers[headerize(name)];\n        if (header) {\n            if (header[0]) {\n                return header[0].raw;\n            }\n        }\n        else {\n            return;\n        }\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array - with all the headers of the specified name.\n     */\n    getHeaders(name) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const header = this.headers[headerize(name)];\n        const result = [];\n        if (!header) {\n            return [];\n        }\n        for (const headerPart of header) {\n            result.push(headerPart.raw);\n        }\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */\n    hasHeader(name) {\n        return !!this.headers[headerize(name)];\n    }\n    /**\n     * Parse the given header on the given index.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    parseHeader(name, idx = 0) {\n        name = headerize(name);\n        if (!this.headers[name]) {\n            // this.logger.log(\"header '\" + name + \"' not present\");\n            return;\n        }\n        else if (idx >= this.headers[name].length) {\n            // this.logger.log(\"not so many '\" + name + \"' headers present\");\n            return;\n        }\n        const header = this.headers[name][idx];\n        const value = header.raw;\n        if (header.parsed) {\n            return header.parsed;\n        }\n        // substitute '-' by '_' for grammar rule matching.\n        const parsed = Grammar.parse(value, name.replace(/-/g, \"_\"));\n        if (parsed === -1) {\n            this.headers[name].splice(idx, 1); // delete from headers\n            // this.logger.warn('error parsing \"' + name + '\" header field with value \"' + value + '\"');\n            return;\n        }\n        else {\n            header.parsed = parsed;\n            return parsed;\n        }\n    }\n    /**\n     * Message Header attribute selector. Alias of parseHeader.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     *\n     * @example\n     * message.s('via',3).port\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    s(name, idx = 0) {\n        return this.parseHeader(name, idx);\n    }\n    /**\n     * Replace the value of the given header by the value.\n     * @param name - header name\n     * @param value - header value\n     */\n    setHeader(name, value) {\n        this.headers[headerize(name)] = [{ raw: value }];\n    }\n    toString() {\n        return this.data;\n    }\n}\n","/**\n * SIP Response Reasons\n * DOC: http://www.iana.org/assignments/sip-parameters\n * @internal\n */\nconst REASON_PHRASE = {\n    100: \"Trying\",\n    180: \"Ringing\",\n    181: \"Call Is Being Forwarded\",\n    182: \"Queued\",\n    183: \"Session Progress\",\n    199: \"Early Dialog Terminated\",\n    200: \"OK\",\n    202: \"Accepted\",\n    204: \"No Notification\",\n    300: \"Multiple Choices\",\n    301: \"Moved Permanently\",\n    302: \"Moved Temporarily\",\n    305: \"Use Proxy\",\n    380: \"Alternative Service\",\n    400: \"Bad Request\",\n    401: \"Unauthorized\",\n    402: \"Payment Required\",\n    403: \"Forbidden\",\n    404: \"Not Found\",\n    405: \"Method Not Allowed\",\n    406: \"Not Acceptable\",\n    407: \"Proxy Authentication Required\",\n    408: \"Request Timeout\",\n    410: \"Gone\",\n    412: \"Conditional Request Failed\",\n    413: \"Request Entity Too Large\",\n    414: \"Request-URI Too Long\",\n    415: \"Unsupported Media Type\",\n    416: \"Unsupported URI Scheme\",\n    417: \"Unknown Resource-Priority\",\n    420: \"Bad Extension\",\n    421: \"Extension Required\",\n    422: \"Session Interval Too Small\",\n    423: \"Interval Too Brief\",\n    428: \"Use Identity Header\",\n    429: \"Provide Referrer Identity\",\n    430: \"Flow Failed\",\n    433: \"Anonymity Disallowed\",\n    436: \"Bad Identity-Info\",\n    437: \"Unsupported Certificate\",\n    438: \"Invalid Identity Header\",\n    439: \"First Hop Lacks Outbound Support\",\n    440: \"Max-Breadth Exceeded\",\n    469: \"Bad Info Package\",\n    470: \"Consent Needed\",\n    478: \"Unresolvable Destination\",\n    480: \"Temporarily Unavailable\",\n    481: \"Call/Transaction Does Not Exist\",\n    482: \"Loop Detected\",\n    483: \"Too Many Hops\",\n    484: \"Address Incomplete\",\n    485: \"Ambiguous\",\n    486: \"Busy Here\",\n    487: \"Request Terminated\",\n    488: \"Not Acceptable Here\",\n    489: \"Bad Event\",\n    491: \"Request Pending\",\n    493: \"Undecipherable\",\n    494: \"Security Agreement Required\",\n    500: \"Internal Server Error\",\n    501: \"Not Implemented\",\n    502: \"Bad Gateway\",\n    503: \"Service Unavailable\",\n    504: \"Server Time-out\",\n    505: \"Version Not Supported\",\n    513: \"Message Too Large\",\n    580: \"Precondition Failure\",\n    600: \"Busy Everywhere\",\n    603: \"Decline\",\n    604: \"Does Not Exist Anywhere\",\n    606: \"Not Acceptable\"\n};\n/**\n * @param size -\n * @param base -\n * @internal\n */\nexport function createRandomToken(size, base = 32) {\n    let token = \"\";\n    for (let i = 0; i < size; i++) {\n        const r = Math.floor(Math.random() * base);\n        token += r.toString(base);\n    }\n    return token;\n}\n/**\n * @internal\n */\nexport function getReasonPhrase(code) {\n    return REASON_PHRASE[code] || \"\";\n}\n/**\n * @internal\n */\nexport function newTag() {\n    return createRandomToken(10);\n}\n/**\n * @param str -\n * @internal\n */\nexport function headerize(str) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const exceptions = {\n        \"Call-Id\": \"Call-ID\",\n        Cseq: \"CSeq\",\n        \"Min-Se\": \"Min-SE\",\n        Rack: \"RAck\",\n        Rseq: \"RSeq\",\n        \"Www-Authenticate\": \"WWW-Authenticate\"\n    };\n    const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n    const parts = name.length;\n    let hname = \"\";\n    for (let part = 0; part < parts; part++) {\n        if (part !== 0) {\n            hname += \"-\";\n        }\n        hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n    }\n    if (exceptions[hname]) {\n        hname = exceptions[hname];\n    }\n    return hname;\n}\n/**\n * @param str -\n * @internal\n */\nexport function utf8Length(str) {\n    return encodeURIComponent(str).replace(/%[A-F\\d]{2}/g, \"U\").length;\n}\n","import { IncomingMessage } from \"./incoming-message.js\";\n/**\n * Incoming response message.\n * @public\n */\nexport class IncomingResponseMessage extends IncomingMessage {\n    constructor() {\n        super();\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { createRandomToken, headerize, newTag, utf8Length } from \"./utils.js\";\n/**\n * Outgoing SIP request message.\n * @public\n */\nexport class OutgoingRequestMessage {\n    constructor(method, ruri, fromURI, toURI, options, extraHeaders, body) {\n        this.headers = {};\n        this.extraHeaders = [];\n        // Initialize default options\n        this.options = OutgoingRequestMessage.getDefaultOptions();\n        // Options - merge a deep copy\n        if (options) {\n            this.options = Object.assign(Object.assign({}, this.options), options);\n            if (this.options.optionTags && this.options.optionTags.length) {\n                this.options.optionTags = this.options.optionTags.slice();\n            }\n            if (this.options.routeSet && this.options.routeSet.length) {\n                this.options.routeSet = this.options.routeSet.slice();\n            }\n        }\n        // Extra headers - deep copy\n        if (extraHeaders && extraHeaders.length) {\n            this.extraHeaders = extraHeaders.slice();\n        }\n        // Body - deep copy\n        if (body) {\n            // TODO: internal representation should be Body\n            // this.body = { ...body };\n            this.body = {\n                body: body.content,\n                contentType: body.contentType\n            };\n        }\n        // Method\n        this.method = method;\n        // RURI\n        this.ruri = ruri.clone();\n        // From\n        this.fromURI = fromURI.clone();\n        this.fromTag = this.options.fromTag ? this.options.fromTag : newTag();\n        this.from = OutgoingRequestMessage.makeNameAddrHeader(this.fromURI, this.options.fromDisplayName, this.fromTag);\n        // To\n        this.toURI = toURI.clone();\n        this.toTag = this.options.toTag;\n        this.to = OutgoingRequestMessage.makeNameAddrHeader(this.toURI, this.options.toDisplayName, this.toTag);\n        // Call-ID\n        this.callId = this.options.callId ? this.options.callId : this.options.callIdPrefix + createRandomToken(15);\n        // CSeq\n        this.cseq = this.options.cseq;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        this.setHeader(\"route\", this.options.routeSet);\n        this.setHeader(\"via\", \"\");\n        this.setHeader(\"to\", this.to.toString());\n        this.setHeader(\"from\", this.from.toString());\n        this.setHeader(\"cseq\", this.cseq + \" \" + this.method);\n        this.setHeader(\"call-id\", this.callId);\n        this.setHeader(\"max-forwards\", \"70\");\n    }\n    /** Get a copy of the default options. */\n    static getDefaultOptions() {\n        return {\n            callId: \"\",\n            callIdPrefix: \"\",\n            cseq: 1,\n            toDisplayName: \"\",\n            toTag: \"\",\n            fromDisplayName: \"\",\n            fromTag: \"\",\n            forceRport: false,\n            hackViaTcp: false,\n            optionTags: [\"outbound\"],\n            routeSet: [],\n            userAgentString: \"sip.js\",\n            viaHost: \"\"\n        };\n    }\n    static makeNameAddrHeader(uri, displayName, tag) {\n        const parameters = {};\n        if (tag) {\n            parameters.tag = tag;\n        }\n        return new NameAddrHeader(uri, displayName, parameters);\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */\n    getHeader(name) {\n        const header = this.headers[headerize(name)];\n        if (header) {\n            if (header[0]) {\n                return header[0];\n            }\n        }\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders) {\n                if (regexp.test(exHeader)) {\n                    return exHeader.substring(exHeader.indexOf(\":\") + 1).trim();\n                }\n            }\n        }\n        return;\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array with all the headers of the specified name.\n     */\n    getHeaders(name) {\n        const result = [];\n        const headerArray = this.headers[headerize(name)];\n        if (headerArray) {\n            for (const headerPart of headerArray) {\n                result.push(headerPart);\n            }\n        }\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders) {\n                if (regexp.test(exHeader)) {\n                    result.push(exHeader.substring(exHeader.indexOf(\":\") + 1).trim());\n                }\n            }\n        }\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */\n    hasHeader(name) {\n        if (this.headers[headerize(name)]) {\n            return true;\n        }\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const extraHeader of this.extraHeaders) {\n                if (regexp.test(extraHeader)) {\n                    return true;\n                }\n            }\n        }\n        return false;\n    }\n    /**\n     * Replace the the given header by the given value.\n     * @param name - header name\n     * @param value - header value\n     */\n    setHeader(name, value) {\n        this.headers[headerize(name)] = value instanceof Array ? value : [value];\n    }\n    /**\n     * The Via header field indicates the transport used for the transaction\n     * and identifies the location where the response is to be sent.  A Via\n     * header field value is added only after the transport that will be\n     * used to reach the next hop has been selected (which may involve the\n     * usage of the procedures in [4]).\n     *\n     * When the UAC creates a request, it MUST insert a Via into that\n     * request.  The protocol name and protocol version in the header field\n     * MUST be SIP and 2.0, respectively.  The Via header field value MUST\n     * contain a branch parameter.  This parameter is used to identify the\n     * transaction created by that request.  This parameter is used by both\n     * the client and the server.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n     * @param branchParameter - The branch parameter.\n     * @param transport - The sent protocol transport.\n     */\n    setViaHeader(branch, transport) {\n        // FIXME: Hack\n        if (this.options.hackViaTcp) {\n            transport = \"TCP\";\n        }\n        let via = \"SIP/2.0/\" + transport;\n        via += \" \" + this.options.viaHost + \";branch=\" + branch;\n        if (this.options.forceRport) {\n            via += \";rport\";\n        }\n        this.setHeader(\"via\", via);\n        this.branch = branch;\n    }\n    toString() {\n        let msg = \"\";\n        msg += this.method + \" \" + this.ruri.toRaw() + \" SIP/2.0\\r\\n\";\n        for (const header in this.headers) {\n            if (this.headers[header]) {\n                for (const headerPart of this.headers[header]) {\n                    msg += header + \": \" + headerPart + \"\\r\\n\";\n                }\n            }\n        }\n        for (const header of this.extraHeaders) {\n            msg += header.trim() + \"\\r\\n\";\n        }\n        msg += \"Supported: \" + this.options.optionTags.join(\", \") + \"\\r\\n\";\n        msg += \"User-Agent: \" + this.options.userAgentString + \"\\r\\n\";\n        if (this.body) {\n            if (typeof this.body === \"string\") {\n                msg += \"Content-Length: \" + utf8Length(this.body) + \"\\r\\n\\r\\n\";\n                msg += this.body;\n            }\n            else {\n                if (this.body.body && this.body.contentType) {\n                    msg += \"Content-Type: \" + this.body.contentType + \"\\r\\n\";\n                    msg += \"Content-Length: \" + utf8Length(this.body.body) + \"\\r\\n\\r\\n\";\n                    msg += this.body.body;\n                }\n                else {\n                    msg += \"Content-Length: \" + 0 + \"\\r\\n\\r\\n\";\n                }\n            }\n        }\n        else {\n            msg += \"Content-Length: \" + 0 + \"\\r\\n\\r\\n\";\n        }\n        return msg;\n    }\n}\n","/**\n * Session state.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-13\n * @public\n */\nexport var SessionState;\n(function (SessionState) {\n    SessionState[\"Initial\"] = \"Initial\";\n    SessionState[\"Early\"] = \"Early\";\n    SessionState[\"AckWait\"] = \"AckWait\";\n    SessionState[\"Confirmed\"] = \"Confirmed\";\n    SessionState[\"Terminated\"] = \"Terminated\";\n})(SessionState = SessionState || (SessionState = {}));\n/**\n * Offer/Answer state.\n * @remarks\n * ```txt\n *         Offer                Answer             RFC    Ini Est Early\n *  -------------------------------------------------------------------\n *  1. INVITE Req.          2xx INVITE Resp.     RFC 3261  Y   Y    N\n *  2. 2xx INVITE Resp.     ACK Req.             RFC 3261  Y   Y    N\n *  3. INVITE Req.          1xx-rel INVITE Resp. RFC 3262  Y   Y    N\n *  4. 1xx-rel INVITE Resp. PRACK Req.           RFC 3262  Y   Y    N\n *  5. PRACK Req.           200 PRACK Resp.      RFC 3262  N   Y    Y\n *  6. UPDATE Req.          2xx UPDATE Resp.     RFC 3311  N   Y    Y\n *\n *       Table 1: Summary of SIP Usage of the Offer/Answer Model\n * ```\n * https://tools.ietf.org/html/rfc6337#section-2.2\n * @public\n */\nexport var SignalingState;\n(function (SignalingState) {\n    SignalingState[\"Initial\"] = \"Initial\";\n    SignalingState[\"HaveLocalOffer\"] = \"HaveLocalOffer\";\n    SignalingState[\"HaveRemoteOffer\"] = \"HaveRemoteOffer\";\n    SignalingState[\"Stable\"] = \"Stable\";\n    SignalingState[\"Closed\"] = \"Closed\";\n})(SignalingState = SignalingState || (SignalingState = {}));\n","const T1 = 500;\nconst T2 = 4000;\nconst T4 = 5000;\n/**\n * Timers.\n * @public\n */\nexport const Timers = {\n    T1,\n    T2,\n    T4,\n    TIMER_B: 64 * T1,\n    TIMER_D: 0 * T1,\n    TIMER_F: 64 * T1,\n    TIMER_H: 64 * T1,\n    TIMER_I: 0 * T4,\n    TIMER_J: 0 * T1,\n    TIMER_K: 0 * T4,\n    TIMER_L: 64 * T1,\n    TIMER_M: 64 * T1,\n    TIMER_N: 64 * T1,\n    PROVISIONAL_RESPONSE_INTERVAL: 60000 // See RFC 3261 Section 13.3.1.1\n};\n","import { Exception } from \"./exception.js\";\n/**\n * Indicates that the operation could not be completed given the current transaction state.\n * @public\n */\nexport class TransactionStateError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Transaction state error.\");\n    }\n}\n","/**\n * An Exception is considered a condition that a reasonable application may wish to catch.\n * An Error indicates serious problems that a reasonable application should not try to catch.\n * @public\n */\nexport class Exception extends Error {\n    constructor(message) {\n        super(message); // 'Error' breaks prototype chain here\n        Object.setPrototypeOf(this, new.target.prototype); // restore prototype chain\n    }\n}\n","/**\n * A request to reject an {@link Invitation} (incoming CANCEL).\n * @public\n */\nexport class Cancel {\n    /** @internal */\n    constructor(incomingCancelRequest) {\n        this.incomingCancelRequest = incomingCancelRequest;\n    }\n    /** Incoming CANCEL request message. */\n    get request() {\n        return this.incomingCancelRequest;\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating an unsupported content type prevented execution.\n * @public\n */\nexport class ContentTypeUnsupportedError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Unsupported content type.\");\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating a session description handler error occured.\n * @public\n */\nexport class SessionDescriptionHandlerError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Unspecified session description handler error.\");\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating the session terminated before the action completed.\n * @public\n */\nexport class SessionTerminatedError extends Exception {\n    constructor() {\n        super(\"The session has terminated.\");\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { URI } from \"../grammar/uri.js\";\nimport { fromBodyLegacy, getBody } from \"../core/messages/body.js\";\nimport { SessionState as SessionDialogState, SignalingState } from \"../core/session/session.js\";\nimport { getReasonPhrase } from \"../core/messages/utils.js\";\nimport { AllowedMethods } from \"../core/user-agent-core/allowed-methods.js\";\nimport { Ack } from \"./ack.js\";\nimport { Bye } from \"./bye.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { ContentTypeUnsupportedError } from \"./exceptions/content-type-unsupported.js\";\nimport { RequestPendingError } from \"./exceptions/request-pending.js\";\nimport { Info } from \"./info.js\";\nimport { Message } from \"./message.js\";\nimport { Notification } from \"./notification.js\";\nimport { Referral } from \"./referral.js\";\nimport { SessionState } from \"./session-state.js\";\n/**\n * A session provides real time communication between one or more participants.\n *\n * @remarks\n * The transport behaves in a deterministic manner according to the\n * the state defined in {@link SessionState}.\n * @public\n */\nexport class Session {\n    /**\n     * Constructor.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @internal\n     */\n    constructor(userAgent, options = {}) {\n        /** True if there is an outgoing re-INVITE request outstanding. */\n        this.pendingReinvite = false;\n        /** True if there is an incoming re-INVITE ACK request outstanding. */\n        this.pendingReinviteAck = false;\n        /** Session state. */\n        this._state = SessionState.Initial;\n        this.delegate = options.delegate;\n        this._stateEventEmitter = new EmitterImpl();\n        this._userAgent = userAgent;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        this.logger.log(`Session ${this.id} in state ${this._state} is being disposed`);\n        // Remove from the user agent's session collection\n        delete this.userAgent._sessions[this.id];\n        // Dispose of dialog media\n        if (this._sessionDescriptionHandler) {\n            this._sessionDescriptionHandler.close();\n            // TODO: The SDH needs to remain defined as it will be called after it is closed in cases\n            // where an answer/offer arrives while the session is being torn down. There are a variety\n            // of circumstances where this can happen - sending a BYE during a re-INVITE for example.\n            // The code is currently written such that it lazily makes a new SDH when it needs one\n            // and one is not yet defined. Thus if we undefined it here, it will currently make a\n            // new one which is out of sync and then never gets cleaned up.\n            //\n            // The downside of leaving it defined are that calls this closed SDH will continue to be\n            // made (think setDescription) and those should/will fail. These failures are handled, but\n            // it would be nice to have it all coded up in a way where having an undefined SDH where\n            // one is expected throws an error.\n            //\n            // this._sessionDescriptionHandler = undefined;\n        }\n        switch (this.state) {\n            case SessionState.Initial:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case SessionState.Establishing:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case SessionState.Established:\n                return new Promise((resolve) => {\n                    this._bye({\n                        // wait for the response to the BYE before resolving\n                        onAccept: () => resolve(),\n                        onRedirect: () => resolve(),\n                        onReject: () => resolve()\n                    });\n                });\n            case SessionState.Terminating:\n                break; // nothing to be done\n            case SessionState.Terminated:\n                break; // nothing to be done\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        return Promise.resolve();\n    }\n    /**\n     * The asserted identity of the remote user.\n     */\n    get assertedIdentity() {\n        return this._assertedIdentity;\n    }\n    /**\n     * The confirmed session dialog.\n     */\n    get dialog() {\n        return this._dialog;\n    }\n    /**\n     * A unique identifier for this session.\n     */\n    get id() {\n        return this._id;\n    }\n    /**\n     * The session being replace by this one.\n     */\n    get replacee() {\n        return this._replacee;\n    }\n    /**\n     * Session description handler.\n     * @remarks\n     * If `this` is an instance of `Invitation`,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * If `this` is an instance of `Inviter` and an offer was sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"establishing\".\n     * If `this` is an instance of `Inviter` and an offer was not sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * Otherwise `undefined`.\n     */\n    get sessionDescriptionHandler() {\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Session description handler factory.\n     */\n    get sessionDescriptionHandlerFactory() {\n        return this.userAgent.configuration.sessionDescriptionHandlerFactory;\n    }\n    /**\n     * SDH modifiers for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */\n    get sessionDescriptionHandlerModifiers() {\n        return this._sessionDescriptionHandlerModifiers || [];\n    }\n    set sessionDescriptionHandlerModifiers(modifiers) {\n        this._sessionDescriptionHandlerModifiers = modifiers.slice();\n    }\n    /**\n     * SDH options for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */\n    get sessionDescriptionHandlerOptions() {\n        return this._sessionDescriptionHandlerOptions || {};\n    }\n    set sessionDescriptionHandlerOptions(options) {\n        this._sessionDescriptionHandlerOptions = Object.assign({}, options);\n    }\n    /**\n     * SDH modifiers for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */\n    get sessionDescriptionHandlerModifiersReInvite() {\n        return this._sessionDescriptionHandlerModifiersReInvite || [];\n    }\n    set sessionDescriptionHandlerModifiersReInvite(modifiers) {\n        this._sessionDescriptionHandlerModifiersReInvite = modifiers.slice();\n    }\n    /**\n     * SDH options for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */\n    get sessionDescriptionHandlerOptionsReInvite() {\n        return this._sessionDescriptionHandlerOptionsReInvite || {};\n    }\n    set sessionDescriptionHandlerOptionsReInvite(options) {\n        this._sessionDescriptionHandlerOptionsReInvite = Object.assign({}, options);\n    }\n    /**\n     * Session state.\n     */\n    get state() {\n        return this._state;\n    }\n    /**\n     * Session state change emitter.\n     */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The user agent.\n     */\n    get userAgent() {\n        return this._userAgent;\n    }\n    /**\n     * End the {@link Session}. Sends a BYE.\n     * @param options - Options bucket. See {@link SessionByeOptions} for details.\n     */\n    bye(options = {}) {\n        let message = \"Session.bye() may only be called if established session.\";\n        switch (this.state) {\n            case SessionState.Initial:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However Inviter.invite() has not yet been called.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                }\n                else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called.\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case SessionState.Establishing:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However a dialog does not yet exist.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                }\n                else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called (or not yet resolved).\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case SessionState.Established: {\n                const requestDelegate = options.requestDelegate;\n                const requestOptions = this.copyRequestOptions(options.requestOptions);\n                return this._bye(requestDelegate, requestOptions);\n            }\n            case SessionState.Terminating:\n                message += \" However this session is already terminating.\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" Perhaps you have already called Inviter.cancel()?\";\n                    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                }\n                else if (typeof this.reject === \"function\") {\n                    message += \" Perhaps you have already called Session.bye()?\";\n                }\n                break;\n            case SessionState.Terminated:\n                message += \" However this session is already terminated.\";\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.error(message);\n        return Promise.reject(new Error(`Invalid session state ${this.state}`));\n    }\n    /**\n     * Share {@link Info} with peer. Sends an INFO.\n     * @param options - Options bucket. See {@link SessionInfoOptions} for details.\n     */\n    info(options = {}) {\n        // guard session state\n        if (this.state !== SessionState.Established) {\n            const message = \"Session.info() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._info(requestDelegate, requestOptions);\n    }\n    /**\n     * Renegotiate the session. Sends a re-INVITE.\n     * @param options - Options bucket. See {@link SessionInviteOptions} for details.\n     */\n    invite(options = {}) {\n        this.logger.log(\"Session.invite\");\n        if (this.state !== SessionState.Established) {\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        if (this.pendingReinvite) {\n            return Promise.reject(new RequestPendingError(\"Reinvite in progress. Please wait until complete, then try again.\"));\n        }\n        this.pendingReinvite = true;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptions;\n        }\n        const delegate = {\n            onAccept: (response) => {\n                // A re-INVITE transaction has an offer/answer [RFC3264] exchange\n                // associated with it.  The UAC (User Agent Client) generating a given\n                // re-INVITE can act as the offerer or as the answerer.  A UAC willing\n                // to act as the offerer includes an offer in the re-INVITE.  The UAS\n                // (User Agent Server) then provides an answer in a response to the\n                // re-INVITE.  A UAC willing to act as answerer does not include an\n                // offer in the re-INVITE.  The UAS then provides an offer in a response\n                // to the re-INVITE becoming, thus, the offerer.\n                // https://tools.ietf.org/html/rfc6141#section-1\n                const body = getBody(response.message);\n                if (!body) {\n                    // No way to recover, so terminate session and mark as failed.\n                    this.logger.error(\"Received 2xx response to re-INVITE without a session description\");\n                    this.ackAndBye(response, 400, \"Missing session description\");\n                    this.stateTransition(SessionState.Terminated);\n                    this.pendingReinvite = false;\n                    return;\n                }\n                if (options.withoutSdp) {\n                    // INVITE without SDP - set remote offer and send an answer in the ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setOfferAndGetAnswer(body, answerOptions)\n                        .then((answerBody) => {\n                        response.ack({ body: answerBody });\n                    })\n                        .catch((error) => {\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle offer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        if (this.state === SessionState.Terminated) {\n                            // A BYE should not be sent if already terminated.\n                            // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                            response.ack();\n                        }\n                        else {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition(SessionState.Terminated);\n                        }\n                    })\n                        .then(() => {\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) {\n                            options.requestDelegate.onAccept(response);\n                        }\n                    });\n                }\n                else {\n                    // INVITE with SDP - set remote answer and send an ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setAnswer(body, answerOptions)\n                        .then(() => {\n                        response.ack();\n                    })\n                        .catch((error) => {\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle answer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        // A BYE should only be sent if session is not already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        // The ACK needs to be sent regardless as it was not handled by the transaction.\n                        if (this.state !== SessionState.Terminated) {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition(SessionState.Terminated);\n                        }\n                        else {\n                            response.ack();\n                        }\n                    })\n                        .then(() => {\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) {\n                            options.requestDelegate.onAccept(response);\n                        }\n                    });\n                }\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onProgress: (response) => {\n                return;\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onRedirect: (response) => {\n                return;\n            },\n            onReject: (response) => {\n                this.logger.warn(\"Received a non-2xx response to re-INVITE\");\n                this.pendingReinvite = false;\n                if (options.withoutSdp) {\n                    if (options.requestDelegate && options.requestDelegate.onReject) {\n                        options.requestDelegate.onReject(response);\n                    }\n                }\n                else {\n                    this.rollbackOffer()\n                        .catch((error) => {\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to rollback offer on non-2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        // A BYE should only be sent if session is not already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                        if (this.state !== SessionState.Terminated) {\n                            if (!this.dialog) {\n                                throw new Error(\"Dialog undefined.\");\n                            }\n                            const extraHeaders = [];\n                            extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                            this.dialog.bye(undefined, { extraHeaders });\n                            this.stateTransition(SessionState.Terminated);\n                        }\n                    })\n                        .then(() => {\n                        if (options.requestDelegate && options.requestDelegate.onReject) {\n                            options.requestDelegate.onReject(response);\n                        }\n                    });\n                }\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onTrying: (response) => {\n                return;\n            }\n        };\n        const requestOptions = options.requestOptions || {};\n        requestOptions.extraHeaders = (requestOptions.extraHeaders || []).slice();\n        requestOptions.extraHeaders.push(\"Allow: \" + AllowedMethods.toString());\n        requestOptions.extraHeaders.push(\"Contact: \" + this._contact);\n        // Just send an INVITE with no sdp...\n        if (options.withoutSdp) {\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            return Promise.resolve(this.dialog.invite(delegate, requestOptions));\n        }\n        // Get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        return this.getOffer(offerOptions)\n            .then((offerBody) => {\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            requestOptions.body = offerBody;\n            return this.dialog.invite(delegate, requestOptions);\n        })\n            .catch((error) => {\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to send re-INVITE\");\n            this.pendingReinvite = false;\n            throw error;\n        });\n    }\n    /**\n     * Deliver a {@link Message}. Sends a MESSAGE.\n     * @param options - Options bucket. See {@link SessionMessageOptions} for details.\n     */\n    message(options = {}) {\n        // guard session state\n        if (this.state !== SessionState.Established) {\n            const message = \"Session.message() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._message(requestDelegate, requestOptions);\n    }\n    /**\n     * Proffer a {@link Referral}. Send a REFER.\n     * @param referTo - The referral target. If a `Session`, a REFER w/Replaces is sent.\n     * @param options - Options bucket. See {@link SessionReferOptions} for details.\n     */\n    refer(referTo, options = {}) {\n        // guard session state\n        if (this.state !== SessionState.Established) {\n            const message = \"Session.refer() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        // REFER with Replaces (Attended Transfer) only supported with established sessions.\n        if (referTo instanceof Session && !referTo.dialog) {\n            const message = \"Session.refer() may only be called with session which is established. \" +\n                \"You are perhaps attempting to attended transfer to a target for which \" +\n                \"there is not dialog yet established. Perhaps you are attempting a \" +\n                \"'semi-attended' tansfer? Regardless, this is not supported. The recommended \" +\n                \"approached is to check to see if the target Session is in the Established \" +\n                \"state before calling refer(); if the state is not Established you may \" +\n                \"proceed by falling back using a URI as the target (blind transfer).\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        requestOptions.extraHeaders = requestOptions.extraHeaders\n            ? requestOptions.extraHeaders.concat(this.referExtraHeaders(this.referToString(referTo)))\n            : this.referExtraHeaders(this.referToString(referTo));\n        return this._refer(options.onNotify, requestDelegate, requestOptions);\n    }\n    /**\n     * Send BYE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _bye(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        const dialog = this.dialog;\n        // The caller's UA MAY send a BYE for either confirmed or early dialogs,\n        // and the callee's UA MAY send a BYE on confirmed dialogs, but MUST NOT\n        // send a BYE on early dialogs. However, the callee's UA MUST NOT send a\n        // BYE on a confirmed dialog until it has received an ACK for its 2xx\n        // response or until the server transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        switch (dialog.sessionState) {\n            case SessionDialogState.Initial:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case SessionDialogState.Early: // Implementation choice - not sending BYE for early dialogs.\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case SessionDialogState.AckWait: {\n                // This state only occurs if we are the callee.\n                this.stateTransition(SessionState.Terminating); // We're terminating\n                return new Promise((resolve) => {\n                    dialog.delegate = {\n                        // When ACK shows up, say BYE.\n                        onAck: () => {\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition(SessionState.Terminated);\n                            resolve(request);\n                            return Promise.resolve();\n                        },\n                        // Or the server transaction times out before the ACK arrives.\n                        onAckTimeout: () => {\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition(SessionState.Terminated);\n                            resolve(request);\n                        }\n                    };\n                });\n            }\n            case SessionDialogState.Confirmed: {\n                const request = dialog.bye(delegate, options);\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve(request);\n            }\n            case SessionDialogState.Terminated:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n    }\n    /**\n     * Send INFO.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _info(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        return Promise.resolve(this.dialog.info(delegate, options));\n    }\n    /**\n     * Send MESSAGE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _message(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        return Promise.resolve(this.dialog.message(delegate, options));\n    }\n    /**\n     * Send REFER.\n     * @param onNotify - Notification callback.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _refer(onNotify, delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        // If set, deliver any in-dialog NOTIFY requests here...\n        this.onNotify = onNotify;\n        return Promise.resolve(this.dialog.refer(delegate, options));\n    }\n    /**\n     * Send ACK and then BYE. There are unrecoverable errors which can occur\n     * while handling dialog forming and in-dialog INVITE responses and when\n     * they occur we ACK the response and send a BYE.\n     * Note that the BYE is sent in the dialog associated with the response\n     * which is not necessarily `this.dialog`. And, accordingly, the\n     * session state is not transitioned to terminated and session is not closed.\n     * @param inviteResponse - The response causing the error.\n     * @param statusCode - Status code for he reason phrase.\n     * @param reasonPhrase - Reason phrase for the BYE.\n     * @internal\n     */\n    ackAndBye(response, statusCode, reasonPhrase) {\n        response.ack();\n        const extraHeaders = [];\n        if (statusCode) {\n            extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(statusCode, reasonPhrase));\n        }\n        // Using the dialog session associate with the response (which might not be this.dialog)\n        response.session.bye(undefined, { extraHeaders });\n    }\n    /**\n     * Handle in dialog ACK request.\n     * @internal\n     */\n    onAckRequest(request) {\n        this.logger.log(\"Session.onAckRequest\");\n        if (this.state !== SessionState.Established && this.state !== SessionState.Terminating) {\n            this.logger.error(`ACK received while in state ${this.state}, dropping request`);\n            return Promise.resolve();\n        }\n        const dialog = this.dialog;\n        if (!dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        // if received answer in ACK.\n        const answerOptions = {\n            sessionDescriptionHandlerOptions: this.pendingReinviteAck\n                ? this.sessionDescriptionHandlerOptionsReInvite\n                : this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.pendingReinviteAck\n                ? this._sessionDescriptionHandlerModifiersReInvite\n                : this._sessionDescriptionHandlerModifiers\n        };\n        if (this.delegate && this.delegate.onAck) {\n            const ack = new Ack(request);\n            this.delegate.onAck(ack);\n        }\n        // reset pending ACK flag\n        this.pendingReinviteAck = false;\n        switch (dialog.signalingState) {\n            case SignalingState.Initial: {\n                // State should never be reached as first reliable response must have answer/offer.\n                // So we must have never has sent an offer.\n                this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                dialog.bye(undefined, { extraHeaders });\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve();\n            }\n            case SignalingState.Stable: {\n                // State we should be in.\n                // Either the ACK has the answer that got us here, or we were in this state prior to the ACK.\n                const body = getBody(request.message);\n                // If the ACK doesn't have an answer, nothing to be done.\n                if (!body) {\n                    return Promise.resolve();\n                }\n                if (body.contentDisposition === \"render\") {\n                    this._renderbody = body.content;\n                    this._rendertype = body.contentType;\n                    return Promise.resolve();\n                }\n                if (body.contentDisposition !== \"session\") {\n                    return Promise.resolve();\n                }\n                return this.setAnswer(body, answerOptions).catch((error) => {\n                    this.logger.error(error.message);\n                    const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                    dialog.bye(undefined, { extraHeaders });\n                    this.stateTransition(SessionState.Terminated);\n                });\n            }\n            case SignalingState.HaveLocalOffer: {\n                // State should never be reached as local offer would be answered by this ACK.\n                // So we must have received an ACK without an answer.\n                this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                dialog.bye(undefined, { extraHeaders });\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve();\n            }\n            case SignalingState.HaveRemoteOffer: {\n                // State should never be reached as remote offer would be answered in first reliable response.\n                // So we must have never has sent an answer.\n                this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                dialog.bye(undefined, { extraHeaders });\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve();\n            }\n            case SignalingState.Closed:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Handle in dialog BYE request.\n     * @internal\n     */\n    onByeRequest(request) {\n        this.logger.log(\"Session.onByeRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`BYE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onBye) {\n            const bye = new Bye(request);\n            this.delegate.onBye(bye);\n        }\n        else {\n            request.accept();\n        }\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Handle in dialog INFO request.\n     * @internal\n     */\n    onInfoRequest(request) {\n        this.logger.log(\"Session.onInfoRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`INFO received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onInfo) {\n            const info = new Info(request);\n            this.delegate.onInfo(info);\n        }\n        else {\n            // FIXME: TODO: We should reject request...\n            //\n            // If a UA receives an INFO request associated with an Info Package that\n            // the UA has not indicated willingness to receive, the UA MUST send a\n            // 469 (Bad Info Package) response (see Section 11.6), which contains a\n            // Recv-Info header field with Info Packages for which the UA is willing\n            // to receive INFO requests.\n            // https://tools.ietf.org/html/rfc6086#section-4.2.2\n            request.accept();\n        }\n    }\n    /**\n     * Handle in dialog INVITE request.\n     * @internal\n     */\n    onInviteRequest(request) {\n        this.logger.log(\"Session.onInviteRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`INVITE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // set pending ACK flag\n        this.pendingReinviteAck = true;\n        // TODO: would be nice to have core track and set the Contact header,\n        // but currently the session which is setting it is holding onto it.\n        const extraHeaders = [\"Contact: \" + this._contact];\n        // Handle P-Asserted-Identity\n        if (request.message.hasHeader(\"P-Asserted-Identity\")) {\n            const header = request.message.getHeader(\"P-Asserted-Identity\");\n            if (!header) {\n                throw new Error(\"Header undefined.\");\n            }\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(header);\n        }\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        this.generateResponseOfferAnswerInDialog(options)\n            .then((body) => {\n            const outgoingResponse = request.accept({ statusCode: 200, extraHeaders, body });\n            if (this.delegate && this.delegate.onInvite) {\n                this.delegate.onInvite(request.message, outgoingResponse.message, 200);\n            }\n        })\n            .catch((error) => {\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to handle to re-INVITE request\");\n            if (!this.dialog) {\n                throw new Error(\"Dialog undefined.\");\n            }\n            this.logger.error(this.dialog.signalingState);\n            // If we don't have a local/remote offer...\n            if (this.dialog.signalingState === SignalingState.Stable) {\n                const outgoingResponse = request.reject({ statusCode: 488 }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) {\n                    this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                }\n                return;\n            }\n            // Otherwise rollback\n            this.rollbackOffer()\n                .then(() => {\n                const outgoingResponse = request.reject({ statusCode: 488 }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) {\n                    this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                }\n            })\n                .catch((errorRollback) => {\n                // No way to recover, so terminate session and mark as failed.\n                this.logger.error(errorRollback.message);\n                this.logger.error(\"Failed to rollback offer on re-INVITE request\");\n                const outgoingResponse = request.reject({ statusCode: 488 }); // Not Acceptable Here\n                // A BYE should only be sent if session is not already terminated.\n                // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                if (this.state !== SessionState.Terminated) {\n                    if (!this.dialog) {\n                        throw new Error(\"Dialog undefined.\");\n                    }\n                    const extraHeadersBye = [];\n                    extraHeadersBye.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                    this.dialog.bye(undefined, { extraHeaders: extraHeadersBye });\n                    this.stateTransition(SessionState.Terminated);\n                }\n                if (this.delegate && this.delegate.onInvite) {\n                    this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                }\n            });\n        });\n    }\n    /**\n     * Handle in dialog MESSAGE request.\n     * @internal\n     */\n    onMessageRequest(request) {\n        this.logger.log(\"Session.onMessageRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`MESSAGE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onMessage) {\n            const message = new Message(request);\n            this.delegate.onMessage(message);\n        }\n        else {\n            request.accept();\n        }\n    }\n    /**\n     * Handle in dialog NOTIFY request.\n     * @internal\n     */\n    onNotifyRequest(request) {\n        this.logger.log(\"Session.onNotifyRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`NOTIFY received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // If this a NOTIFY associated with the progress of a REFER,\n        // look to delegate handling to the associated callback.\n        if (this.onNotify) {\n            const notification = new Notification(request);\n            this.onNotify(notification);\n            return;\n        }\n        // Otherwise accept the NOTIFY.\n        if (this.delegate && this.delegate.onNotify) {\n            const notification = new Notification(request);\n            this.delegate.onNotify(notification);\n        }\n        else {\n            request.accept();\n        }\n    }\n    /**\n     * Handle in dialog PRACK request.\n     * @internal\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onPrackRequest(request) {\n        this.logger.log(\"Session.onPrackRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`PRACK received while in state ${this.state}, dropping request`);\n            return;\n        }\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * Handle in dialog REFER request.\n     * @internal\n     */\n    onReferRequest(request) {\n        this.logger.log(\"Session.onReferRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`REFER received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // REFER is a SIP request and is constructed as defined in [1].  A REFER\n        // request MUST contain exactly one Refer-To header field value.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.1\n        if (!request.message.hasHeader(\"refer-to\")) {\n            this.logger.warn(\"Invalid REFER packet. A refer-to header is required. Rejecting.\");\n            request.reject();\n            return;\n        }\n        const referral = new Referral(request, this);\n        if (this.delegate && this.delegate.onRefer) {\n            this.delegate.onRefer(referral);\n        }\n        else {\n            this.logger.log(\"No delegate available to handle REFER, automatically accepting and following.\");\n            referral\n                .accept()\n                .then(() => referral.makeInviter(this._referralInviterOptions).invite())\n                .catch((error) => {\n                // FIXME: logging and eating error...\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request.\n     * If a remote offer was provided in the request, set the remote\n     * description and get a local answer. If a remote offer was not\n     * provided, generates a local offer.\n     * @internal\n     */\n    generateResponseOfferAnswer(request, options) {\n        if (this.dialog) {\n            return this.generateResponseOfferAnswerInDialog(options);\n        }\n        const body = getBody(request.message);\n        if (!body || body.contentDisposition !== \"session\") {\n            return this.getOffer(options);\n        }\n        else {\n            return this.setOfferAndGetAnswer(body, options);\n        }\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request\n     * when a dialog (early or otherwise) has already been established.\n     * This method may NOT be called if a dialog has yet to be established.\n     * @internal\n     */\n    generateResponseOfferAnswerInDialog(options) {\n        if (!this.dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        switch (this.dialog.signalingState) {\n            case SignalingState.Initial:\n                return this.getOffer(options);\n            case SignalingState.HaveLocalOffer:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                return Promise.resolve(undefined);\n            case SignalingState.HaveRemoteOffer:\n                if (!this.dialog.offer) {\n                    throw new Error(`Session offer undefined in signaling state ${this.dialog.signalingState}.`);\n                }\n                return this.setOfferAndGetAnswer(this.dialog.offer, options);\n            case SignalingState.Stable:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                if (this.state !== SessionState.Established) {\n                    return Promise.resolve(undefined);\n                }\n                // In dialog INVITE without offer, get an offer for the response.\n                return this.getOffer(options);\n            case SignalingState.Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Get local offer.\n     * @internal\n     */\n    getOffer(options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh\n                .getDescription(sdhOptions, sdhModifiers)\n                .then((bodyAndContentType) => fromBodyLegacy(bodyAndContentType))\n                .catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.getOffer: SDH getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.getOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.getOffer: SDH getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Rollback local/remote offer.\n     * @internal\n     */\n    rollbackOffer() {\n        const sdh = this.setupSessionDescriptionHandler();\n        if (sdh.rollbackDescription === undefined) {\n            return Promise.resolve();\n        }\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh.rollbackDescription().catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.rollbackOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote answer.\n     * @internal\n     */\n    setAnswer(answer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(answer.contentType)) {\n                return Promise.reject(new ContentTypeUnsupportedError());\n            }\n        }\n        catch (error) {\n            this.logger.error(\"Session.setAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh.setDescription(answer.content, sdhOptions, sdhModifiers).catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setAnswer: SDH setDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setAnswer: SDH setDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote offer and get local answer.\n     * @internal\n     */\n    setOfferAndGetAnswer(offer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(offer.contentType)) {\n                return Promise.reject(new ContentTypeUnsupportedError());\n            }\n        }\n        catch (error) {\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh\n                .setDescription(offer.content, sdhOptions, sdhModifiers)\n                .then(() => sdh.getDescription(sdhOptions, sdhModifiers))\n                .then((bodyAndContentType) => fromBodyLegacy(bodyAndContentType))\n                .catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setOfferAndGetAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */\n    setSessionDescriptionHandler(sdh) {\n        if (this._sessionDescriptionHandler) {\n            throw new Error(\"Session description handler defined.\");\n        }\n        this._sessionDescriptionHandler = sdh;\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */\n    setupSessionDescriptionHandler() {\n        var _a;\n        if (this._sessionDescriptionHandler) {\n            return this._sessionDescriptionHandler;\n        }\n        this._sessionDescriptionHandler = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions);\n        if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) {\n            this.delegate.onSessionDescriptionHandler(this._sessionDescriptionHandler, false);\n        }\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Transition session state.\n     * @internal\n     */\n    stateTransition(newState) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch (this._state) {\n            case SessionState.Initial:\n                if (newState !== SessionState.Establishing &&\n                    newState !== SessionState.Established &&\n                    newState !== SessionState.Terminating &&\n                    newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Establishing:\n                if (newState !== SessionState.Established &&\n                    newState !== SessionState.Terminating &&\n                    newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Established:\n                if (newState !== SessionState.Terminating && newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Terminating:\n                if (newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Session ${this.id} transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === SessionState.Terminated) {\n            this.dispose();\n        }\n    }\n    copyRequestOptions(requestOptions = {}) {\n        const extraHeaders = requestOptions.extraHeaders ? requestOptions.extraHeaders.slice() : undefined;\n        const body = requestOptions.body\n            ? {\n                contentDisposition: requestOptions.body.contentDisposition || \"render\",\n                contentType: requestOptions.body.contentType || \"text/plain\",\n                content: requestOptions.body.content || \"\"\n            }\n            : undefined;\n        return {\n            extraHeaders,\n            body\n        };\n    }\n    getReasonHeaderValue(code, reason) {\n        const cause = code;\n        let text = getReasonPhrase(code);\n        if (!text && reason) {\n            text = reason;\n        }\n        return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n    }\n    referExtraHeaders(referTo) {\n        const extraHeaders = [];\n        extraHeaders.push(\"Referred-By: <\" + this.userAgent.configuration.uri + \">\");\n        extraHeaders.push(\"Contact: \" + this._contact);\n        extraHeaders.push(\"Allow: \" + [\"ACK\", \"CANCEL\", \"INVITE\", \"MESSAGE\", \"BYE\", \"OPTIONS\", \"INFO\", \"NOTIFY\", \"REFER\"].toString());\n        extraHeaders.push(\"Refer-To: \" + referTo);\n        return extraHeaders;\n    }\n    referToString(target) {\n        let referTo;\n        if (target instanceof URI) {\n            // REFER without Replaces (Blind Transfer)\n            referTo = target.toString();\n        }\n        else {\n            // REFER with Replaces (Attended Transfer)\n            if (!target.dialog) {\n                throw new Error(\"Dialog undefined.\");\n            }\n            const displayName = target.remoteIdentity.friendlyName;\n            const remoteTarget = target.dialog.remoteTarget.toString();\n            const callId = target.dialog.callId;\n            const remoteTag = target.dialog.remoteTag;\n            const localTag = target.dialog.localTag;\n            const replaces = encodeURIComponent(`${callId};to-tag=${remoteTag};from-tag=${localTag}`);\n            referTo = `\"${displayName}\" <${remoteTarget}?Replaces=${replaces}>`;\n        }\n        return referTo;\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\n/**\n * FIXME: TODO: Should be configurable/variable.\n */\nexport const AllowedMethods = [\n    C.ACK,\n    C.BYE,\n    C.CANCEL,\n    C.INFO,\n    C.INVITE,\n    C.MESSAGE,\n    C.NOTIFY,\n    C.OPTIONS,\n    C.PRACK,\n    C.REFER,\n    C.REGISTER,\n    C.SUBSCRIBE\n];\n","/* eslint-disable @typescript-eslint/no-namespace */\n/**\n * SIP Methods\n * @internal\n */\nexport var C;\n(function (C) {\n    C.ACK = \"ACK\";\n    C.BYE = \"BYE\";\n    C.CANCEL = \"CANCEL\";\n    C.INFO = \"INFO\";\n    C.INVITE = \"INVITE\";\n    C.MESSAGE = \"MESSAGE\";\n    C.NOTIFY = \"NOTIFY\";\n    C.OPTIONS = \"OPTIONS\";\n    C.REGISTER = \"REGISTER\";\n    C.UPDATE = \"UPDATE\";\n    C.SUBSCRIBE = \"SUBSCRIBE\";\n    C.PUBLISH = \"PUBLISH\";\n    C.REFER = \"REFER\";\n    C.PRACK = \"PRACK\";\n})(C = C || (C = {}));\n","/**\n * A request to confirm a {@link Session} (incoming ACK).\n * @public\n */\nexport class Ack {\n    /** @internal */\n    constructor(incomingAckRequest) {\n        this.incomingAckRequest = incomingAckRequest;\n    }\n    /** Incoming ACK request message. */\n    get request() {\n        return this.incomingAckRequest.message;\n    }\n}\n","/**\n * A request to end a {@link Session} (incoming BYE).\n * @public\n */\nexport class Bye {\n    /** @internal */\n    constructor(incomingByeRequest) {\n        this.incomingByeRequest = incomingByeRequest;\n    }\n    /** Incoming BYE request message. */\n    get request() {\n        return this.incomingByeRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingByeRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingByeRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","/**\n * An {@link Emitter} implementation.\n * @internal\n */\nexport class EmitterImpl {\n    constructor() {\n        this.listeners = new Array();\n    }\n    /**\n     * Sets up a function that will be called whenever the target changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */\n    addListener(listener, options) {\n        const onceWrapper = (data) => {\n            this.removeListener(onceWrapper);\n            listener(data);\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * Emit change.\n     * @param data - Data to emit.\n     */\n    emit(data) {\n        this.listeners.slice().forEach((listener) => listener(data));\n    }\n    /**\n     * Removes all listeners previously registered with addListener.\n     */\n    removeAllListeners() {\n        this.listeners = [];\n    }\n    /**\n     * Removes a listener previously registered with addListener.\n     * @param listener - Callback function.\n     */\n    removeListener(listener) {\n        this.listeners = this.listeners.filter((l) => l !== listener);\n    }\n    /**\n     * Registers a listener.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */\n    on(listener) {\n        return this.addListener(listener);\n    }\n    /**\n     * Unregisters a listener.\n     * @param listener - Callback function.\n     * @deprecated Use removeListener.\n     */\n    off(listener) {\n        return this.removeListener(listener);\n    }\n    /**\n     * Registers a listener then unregisters the listener after one event emission.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */\n    once(listener) {\n        return this.addListener(listener, { once: true });\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating an outstanding prior request prevented execution.\n * @public\n */\nexport class RequestPendingError extends Exception {\n    /** @internal */\n    constructor(message) {\n        super(message ? message : \"Request pending.\");\n    }\n}\n","/**\n * An exchange of information (incoming INFO).\n * @public\n */\nexport class Info {\n    /** @internal */\n    constructor(incomingInfoRequest) {\n        this.incomingInfoRequest = incomingInfoRequest;\n    }\n    /** Incoming MESSAGE request message. */\n    get request() {\n        return this.incomingInfoRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingInfoRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingInfoRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","/**\n * A received message (incoming MESSAGE).\n * @public\n */\nexport class Message {\n    /** @internal */\n    constructor(incomingMessageRequest) {\n        this.incomingMessageRequest = incomingMessageRequest;\n    }\n    /** Incoming MESSAGE request message. */\n    get request() {\n        return this.incomingMessageRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingMessageRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingMessageRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","/**\n * A notification of an event (incoming NOTIFY).\n * @public\n */\nexport class Notification {\n    /** @internal */\n    constructor(incomingNotifyRequest) {\n        this.incomingNotifyRequest = incomingNotifyRequest;\n    }\n    /** Incoming NOTIFY request message. */\n    get request() {\n        return this.incomingNotifyRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingNotifyRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingNotifyRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","import { NameAddrHeader } from \"../grammar/name-addr-header.js\";\n/**\n * A request to establish a {@link Session} elsewhere (incoming REFER).\n * @public\n */\nexport class Referral {\n    /** @internal */\n    constructor(incomingReferRequest, session) {\n        this.incomingReferRequest = incomingReferRequest;\n        this.session = session;\n    }\n    get referTo() {\n        const referTo = this.incomingReferRequest.message.parseHeader(\"refer-to\");\n        if (!(referTo instanceof NameAddrHeader)) {\n            throw new Error(\"Failed to parse Refer-To header.\");\n        }\n        return referTo;\n    }\n    get referredBy() {\n        return this.incomingReferRequest.message.getHeader(\"referred-by\");\n    }\n    get replaces() {\n        const value = this.referTo.uri.getHeader(\"replaces\");\n        if (value instanceof Array) {\n            return value[0];\n        }\n        return value;\n    }\n    /** Incoming REFER request message. */\n    get request() {\n        return this.incomingReferRequest.message;\n    }\n    /** Accept the request. */\n    accept(options = { statusCode: 202 }) {\n        this.incomingReferRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingReferRequest.reject(options);\n        return Promise.resolve();\n    }\n    /**\n     * Creates an inviter which may be used to send an out of dialog INVITE request.\n     *\n     * @remarks\n     * This a helper method to create an Inviter which will execute the referral\n     * of the `Session` which was referred. The appropriate headers are set and\n     * the referred `Session` is linked to the new `Session`. Note that only a\n     * single instance of the `Inviter` will be created and returned (if called\n     * more than once a reference to the same `Inviter` will be returned every time).\n     *\n     * @param options - Options bucket.\n     * @param modifiers - Session description handler modifiers.\n     */\n    makeInviter(options) {\n        if (this.inviter) {\n            return this.inviter;\n        }\n        const targetURI = this.referTo.uri.clone();\n        targetURI.clearHeaders();\n        options = options || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const replaces = this.replaces;\n        if (replaces) {\n            // decodeURIComponent is a holdover from 2c086eb4. Not sure that it is actually necessary\n            extraHeaders.push(\"Replaces: \" + decodeURIComponent(replaces));\n        }\n        const referredBy = this.referredBy;\n        if (referredBy) {\n            extraHeaders.push(\"Referred-By: \" + referredBy);\n        }\n        options.extraHeaders = extraHeaders;\n        this.inviter = this.session.userAgent._makeInviter(targetURI, options);\n        this.inviter._referred = this.session;\n        this.session._referral = this.inviter;\n        return this.inviter;\n    }\n}\n","/**\n * SIP extension support level.\n * @public\n */\nexport var SIPExtension;\n(function (SIPExtension) {\n    SIPExtension[\"Required\"] = \"Required\";\n    SIPExtension[\"Supported\"] = \"Supported\";\n    SIPExtension[\"Unsupported\"] = \"Unsupported\";\n})(SIPExtension = SIPExtension || (SIPExtension = {}));\n/**\n * SIP Option Tags\n * @remarks\n * http://www.iana.org/assignments/sip-parameters/sip-parameters.xhtml#sip-parameters-4\n * @public\n */\nexport const UserAgentRegisteredOptionTags = {\n    \"100rel\": true,\n    \"199\": true,\n    answermode: true,\n    \"early-session\": true,\n    eventlist: true,\n    explicitsub: true,\n    \"from-change\": true,\n    \"geolocation-http\": true,\n    \"geolocation-sip\": true,\n    gin: true,\n    gruu: true,\n    histinfo: true,\n    ice: true,\n    join: true,\n    \"multiple-refer\": true,\n    norefersub: true,\n    nosub: true,\n    outbound: true,\n    path: true,\n    policy: true,\n    precondition: true,\n    pref: true,\n    privacy: true,\n    \"recipient-list-invite\": true,\n    \"recipient-list-message\": true,\n    \"recipient-list-subscribe\": true,\n    replaces: true,\n    \"resource-priority\": true,\n    \"sdp-anat\": true,\n    \"sec-agree\": true,\n    tdialog: true,\n    timer: true,\n    uui: true // RFC 7433\n};\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\nimport { SignalingState } from \"../core/session/session.js\";\nimport { getReasonPhrase, newTag } from \"../core/messages/utils.js\";\nimport { Session } from \"./session.js\";\nimport { SessionState } from \"./session-state.js\";\nimport { SIPExtension } from \"./user-agent-options.js\";\n/**\n * An inviter offers to establish a {@link Session} (outgoing INVITE).\n * @public\n */\nexport class Inviter extends Session {\n    /**\n     * Constructs a new instance of the `Inviter` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param options - Options bucket. See {@link InviterOptions} for details.\n     */\n    constructor(userAgent, targetURI, options = {}) {\n        super(userAgent, options);\n        /** True if dispose() has been called. */\n        this.disposed = false;\n        /** True if early media use is enabled. */\n        this.earlyMedia = false;\n        /** The early media session description handlers. */\n        this.earlyMediaSessionDescriptionHandlers = new Map();\n        /** True if cancel() was called. */\n        this.isCanceled = false;\n        /** True if initial INVITE without SDP. */\n        this.inviteWithoutSdp = false;\n        this.logger = userAgent.getLogger(\"sip.Inviter\");\n        // Early media\n        this.earlyMedia = options.earlyMedia !== undefined ? options.earlyMedia : this.earlyMedia;\n        // From tag\n        this.fromTag = newTag();\n        // Invite without SDP\n        this.inviteWithoutSdp = options.inviteWithoutSdp !== undefined ? options.inviteWithoutSdp : this.inviteWithoutSdp;\n        // Inviter options (could do better copying these options)\n        const inviterOptions = Object.assign({}, options);\n        inviterOptions.params = Object.assign({}, options.params);\n        // Anonymous call\n        const anonymous = options.anonymous || false;\n        // Contact\n        const contact = userAgent.contact.toString({\n            anonymous,\n            // Do not add ;ob in initial forming dialog requests if the\n            // registration over the current connection got a GRUU URI.\n            outbound: anonymous ? !userAgent.contact.tempGruu : !userAgent.contact.pubGruu\n        });\n        // FIXME: TODO: We should not be parsing URIs here as if it fails we have to throw an exception\n        // which is not something we want our constructor to do. URIs should be passed in as params.\n        // URIs\n        if (anonymous && userAgent.configuration.uri) {\n            inviterOptions.params.fromDisplayName = \"Anonymous\";\n            inviterOptions.params.fromUri = \"sip:anonymous@anonymous.invalid\";\n        }\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (inviterOptions.params.fromUri) {\n            fromURI =\n                typeof inviterOptions.params.fromUri === \"string\"\n                    ? Grammar.URIParse(inviterOptions.params.fromUri)\n                    : inviterOptions.params.fromUri;\n        }\n        if (!fromURI) {\n            throw new TypeError(\"Invalid from URI: \" + inviterOptions.params.fromUri);\n        }\n        let toURI = targetURI;\n        if (inviterOptions.params.toUri) {\n            toURI =\n                typeof inviterOptions.params.toUri === \"string\"\n                    ? Grammar.URIParse(inviterOptions.params.toUri)\n                    : inviterOptions.params.toUri;\n        }\n        if (!toURI) {\n            throw new TypeError(\"Invalid to URI: \" + inviterOptions.params.toUri);\n        }\n        // Params\n        const messageOptions = Object.assign({}, inviterOptions.params);\n        messageOptions.fromTag = this.fromTag;\n        // Extra headers\n        const extraHeaders = (inviterOptions.extraHeaders || []).slice();\n        if (anonymous && userAgent.configuration.uri) {\n            extraHeaders.push(\"P-Preferred-Identity: \" + userAgent.configuration.uri.toString());\n            extraHeaders.push(\"Privacy: id\");\n        }\n        extraHeaders.push(\"Contact: \" + contact);\n        extraHeaders.push(\"Allow: \" + [\"ACK\", \"CANCEL\", \"INVITE\", \"MESSAGE\", \"BYE\", \"OPTIONS\", \"INFO\", \"NOTIFY\", \"REFER\"].toString());\n        if (userAgent.configuration.sipExtension100rel === SIPExtension.Required) {\n            extraHeaders.push(\"Require: 100rel\");\n        }\n        if (userAgent.configuration.sipExtensionReplaces === SIPExtension.Required) {\n            extraHeaders.push(\"Require: replaces\");\n        }\n        inviterOptions.extraHeaders = extraHeaders;\n        // Body\n        const body = undefined;\n        // Make initial outgoing request message\n        this.outgoingRequestMessage = userAgent.userAgentCore.makeOutgoingRequestMessage(C.INVITE, targetURI, fromURI, toURI, messageOptions, extraHeaders, body);\n        // Session parent properties\n        this._contact = contact;\n        this._referralInviterOptions = inviterOptions;\n        this._renderbody = options.renderbody;\n        this._rendertype = options.rendertype;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // Modifiers and options for re-INVITE transactions\n        if (options.sessionDescriptionHandlerModifiersReInvite) {\n            this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiersReInvite;\n        }\n        if (options.sessionDescriptionHandlerOptionsReInvite) {\n            this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptionsReInvite;\n        }\n        // Identifier\n        this._id = this.outgoingRequestMessage.callId + this.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        // Dispose of early dialog media\n        this.disposeEarlyMedia();\n        // If the final response for the initial INVITE not yet been received, cancel it\n        switch (this.state) {\n            case SessionState.Initial:\n                return this.cancel().then(() => super.dispose());\n            case SessionState.Establishing:\n                return this.cancel().then(() => super.dispose());\n            case SessionState.Established:\n                return super.dispose();\n            case SessionState.Terminating:\n                return super.dispose();\n            case SessionState.Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * Initial outgoing INVITE request message body.\n     */\n    get body() {\n        return this.outgoingRequestMessage.body;\n    }\n    /**\n     * The identity of the local user.\n     */\n    get localIdentity() {\n        return this.outgoingRequestMessage.from;\n    }\n    /**\n     * The identity of the remote user.\n     */\n    get remoteIdentity() {\n        return this.outgoingRequestMessage.to;\n    }\n    /**\n     * Initial outgoing INVITE request message.\n     */\n    get request() {\n        return this.outgoingRequestMessage;\n    }\n    /**\n     * Cancels the INVITE request.\n     *\n     * @remarks\n     * Sends a CANCEL request.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * After sending a CANCEL request the expectation is that a 487 final response\n     * will be received for the INVITE. However a 200 final response to the INVITE\n     * may nonetheless arrive (it's a race between the CANCEL reaching the UAS before\n     * the UAS sends a 200) in which case an ACK & BYE will be sent. The net effect\n     * is that this method will terminate the session regardless of the race.\n     * @param options - Options bucket.\n     */\n    cancel(options = {}) {\n        this.logger.log(\"Inviter.cancel\");\n        // validate state\n        if (this.state !== SessionState.Initial && this.state !== SessionState.Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // transition state\n        this.stateTransition(SessionState.Terminating);\n        // helper function\n        function getCancelReason(code, reason) {\n            if ((code && code < 200) || code > 699) {\n                throw new TypeError(\"Invalid statusCode: \" + code);\n            }\n            else if (code) {\n                const cause = code;\n                const text = getReasonPhrase(code) || reason;\n                return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n            }\n        }\n        if (this.outgoingInviteRequest) {\n            // the CANCEL may not be respected by peer(s), so don't transition to terminated\n            let cancelReason;\n            if (options.statusCode && options.reasonPhrase) {\n                cancelReason = getCancelReason(options.statusCode, options.reasonPhrase);\n            }\n            this.outgoingInviteRequest.cancel(cancelReason, options);\n        }\n        else {\n            this.logger.warn(\"Canceled session before INVITE was sent\");\n            this.stateTransition(SessionState.Terminated);\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Sends the INVITE request.\n     *\n     * @remarks\n     * TLDR...\n     *  1) Only one offer/answer exchange permitted during initial INVITE.\n     *  2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *  3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * 1) Only one offer/answer exchange permitted during initial INVITE.\n     *\n     * Our implementation replaces the following bullet point...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MAY generate subsequent offers in requests based on rules\n     *    specified for that method, but only if it has received answers\n     *    to any previous offers, and has not sent any offers to which it\n     *    hasn't gotten an answer.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...with...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MUST NOT generate subsequent offers in requests based on rules\n     *    specified for that method.\n     *\n     * ...which in combination with this bullet point...\n     *\n     * o  Once the UAS has sent or received an answer to the initial\n     *    offer, it MUST NOT generate subsequent offers in any responses\n     *    to the initial INVITE.  This means that a UAS based on this\n     *    specification alone can never generate subsequent offers until\n     *    completion of the initial transaction.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...ensures that EXACTLY ONE offer/answer exchange will occur\n     * during an initial out of dialog INVITE request made by our UAC.\n     *\n     *\n     * 2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *\n     * While our implementation adheres to the following bullet point...\n     *\n     * o  If the initial offer is in an INVITE, the answer MUST be in a\n     *    reliable non-failure message from UAS back to UAC which is\n     *    correlated to that INVITE.  For this specification, that is\n     *    only the final 2xx response to that INVITE.  That same exact\n     *    answer MAY also be placed in any provisional responses sent\n     *    prior to the answer.  The UAC MUST treat the first session\n     *    description it receives as the answer, and MUST ignore any\n     *    session descriptions in subsequent responses to the initial\n     *    INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * We have made the following implementation decision with regard to early media...\n     *\n     * o  If the initial offer is in the INVITE, the answer from the\n     *    UAS back to the UAC will establish a media session only\n     *    only after the final 2xx response to that INVITE is received.\n     *\n     * The reason for this decision is rooted in a restriction currently\n     * inherent in WebRTC. Specifically, while a SIP INVITE request with an\n     * initial offer may fork resulting in more than one provisional answer,\n     * there is currently no easy/good way to to \"fork\" an offer generated\n     * by a peer connection. In particular, a WebRTC offer currently may only\n     * be matched with one answer and we have no good way to know which\n     * \"provisional answer\" is going to be the \"final answer\". So we have\n     * decided to punt and not create any \"early media\" sessions in this case.\n     *\n     * The upshot is that if you want \"early media\", you must not put the\n     * initial offer in the INVITE. Instead, force the UAS to provide the\n     * initial offer by sending an INVITE without an offer. In the WebRTC\n     * case this allows us to create a unique peer connection with a unique\n     * answer for every provisional offer with \"early media\" on all of them.\n     *\n     *\n     * 3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * The default behavior may be altered and \"early media\" utilized if the\n     * initial offer is in the an INVITE by setting the `earlyMedia` options.\n     * However in that case the INVITE request MUST NOT fork. This allows for\n     * \"early media\" in environments where the forking behavior of the SIP\n     * servers being utilized is configured to disallow forking.\n     */\n    invite(options = {}) {\n        this.logger.log(\"Inviter.invite\");\n        // validate state\n        if (this.state !== SessionState.Initial) {\n            // re-invite\n            return super.invite(options);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // just send an INVITE with no sdp...\n        if (options.withoutSdp || this.inviteWithoutSdp) {\n            if (this._renderbody && this._rendertype) {\n                this.outgoingRequestMessage.body = { contentType: this._rendertype, body: this._renderbody };\n            }\n            // transition state\n            this.stateTransition(SessionState.Establishing);\n            return Promise.resolve(this.sendInvite(options));\n        }\n        // get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n        };\n        return this.getOffer(offerOptions)\n            .then((body) => {\n            this.outgoingRequestMessage.body = { body: body.content, contentType: body.contentType };\n            // transition state\n            this.stateTransition(SessionState.Establishing);\n            return this.sendInvite(options);\n        })\n            .catch((error) => {\n            this.logger.log(error.message);\n            // It's possible we are already terminated,\n            // so don't throw trying to transition again.\n            if (this.state !== SessionState.Terminated) {\n                this.stateTransition(SessionState.Terminated);\n            }\n            throw error;\n        });\n    }\n    /**\n     * 13.2.1 Creating the Initial INVITE\n     *\n     * Since the initial INVITE represents a request outside of a dialog,\n     * its construction follows the procedures of Section 8.1.1.  Additional\n     * processing is required for the specific case of INVITE.\n     *\n     * An Allow header field (Section 20.5) SHOULD be present in the INVITE.\n     * It indicates what methods can be invoked within a dialog, on the UA\n     * sending the INVITE, for the duration of the dialog.  For example, a\n     * UA capable of receiving INFO requests within a dialog [34] SHOULD\n     * include an Allow header field listing the INFO method.\n     *\n     * A Supported header field (Section 20.37) SHOULD be present in the\n     * INVITE.  It enumerates all the extensions understood by the UAC.\n     *\n     * An Accept (Section 20.1) header field MAY be present in the INVITE.\n     * It indicates which Content-Types are acceptable to the UA, in both\n     * the response received by it, and in any subsequent requests sent to\n     * it within dialogs established by the INVITE.  The Accept header field\n     * is especially useful for indicating support of various session\n     * description formats.\n     *\n     * The UAC MAY add an Expires header field (Section 20.19) to limit the\n     * validity of the invitation.  If the time indicated in the Expires\n     * header field is reached and no final answer for the INVITE has been\n     * received, the UAC core SHOULD generate a CANCEL request for the\n     * INVITE, as per Section 9.\n     *\n     * A UAC MAY also find it useful to add, among others, Subject (Section\n     * 20.36), Organization (Section 20.25) and User-Agent (Section 20.41)\n     * header fields.  They all contain information related to the INVITE.\n     *\n     * The UAC MAY choose to add a message body to the INVITE.  Section\n     * 8.1.1.10 deals with how to construct the header fields -- Content-\n     * Type among others -- needed to describe the message body.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     */\n    sendInvite(options = {}) {\n        //    There are special rules for message bodies that contain a session\n        //    description - their corresponding Content-Disposition is \"session\".\n        //    SIP uses an offer/answer model where one UA sends a session\n        //    description, called the offer, which contains a proposed description\n        //    of the session.  The offer indicates the desired communications means\n        //    (audio, video, games), parameters of those means (such as codec\n        //    types) and addresses for receiving media from the answerer.  The\n        //    other UA responds with another session description, called the\n        //    answer, which indicates which communications means are accepted, the\n        //    parameters that apply to those means, and addresses for receiving\n        //    media from the offerer. An offer/answer exchange is within the\n        //    context of a dialog, so that if a SIP INVITE results in multiple\n        //    dialogs, each is a separate offer/answer exchange.  The offer/answer\n        //    model defines restrictions on when offers and answers can be made\n        //    (for example, you cannot make a new offer while one is in progress).\n        //    This results in restrictions on where the offers and answers can\n        //    appear in SIP messages.  In this specification, offers and answers\n        //    can only appear in INVITE requests and responses, and ACK.  The usage\n        //    of offers and answers is further restricted.  For the initial INVITE\n        //    transaction, the rules are:\n        //\n        //       o  The initial offer MUST be in either an INVITE or, if not there,\n        //          in the first reliable non-failure message from the UAS back to\n        //          the UAC.  In this specification, that is the final 2xx\n        //          response.\n        //\n        //       o  If the initial offer is in an INVITE, the answer MUST be in a\n        //          reliable non-failure message from UAS back to UAC which is\n        //          correlated to that INVITE.  For this specification, that is\n        //          only the final 2xx response to that INVITE.  That same exact\n        //          answer MAY also be placed in any provisional responses sent\n        //          prior to the answer.  The UAC MUST treat the first session\n        //          description it receives as the answer, and MUST ignore any\n        //          session descriptions in subsequent responses to the initial\n        //          INVITE.\n        //\n        //       o  If the initial offer is in the first reliable non-failure\n        //          message from the UAS back to UAC, the answer MUST be in the\n        //          acknowledgement for that message (in this specification, ACK\n        //          for a 2xx response).\n        //\n        //       o  After having sent or received an answer to the first offer, the\n        //          UAC MAY generate subsequent offers in requests based on rules\n        //          specified for that method, but only if it has received answers\n        //          to any previous offers, and has not sent any offers to which it\n        //          hasn't gotten an answer.\n        //\n        //       o  Once the UAS has sent or received an answer to the initial\n        //          offer, it MUST NOT generate subsequent offers in any responses\n        //          to the initial INVITE.  This means that a UAS based on this\n        //          specification alone can never generate subsequent offers until\n        //          completion of the initial transaction.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        // 5 The Offer/Answer Model and PRACK\n        //\n        //    RFC 3261 describes guidelines for the sets of messages in which\n        //    offers and answers [3] can appear.  Based on those guidelines, this\n        //    extension provides additional opportunities for offer/answer\n        //    exchanges.\n        //    If the INVITE contained an offer, the UAS MAY generate an answer in a\n        //    reliable provisional response (assuming these are supported by the\n        //    UAC).  That results in the establishment of the session before\n        //    completion of the call.  Similarly, if a reliable provisional\n        //    response is the first reliable message sent back to the UAC, and the\n        //    INVITE did not contain an offer, one MUST appear in that reliable\n        //    provisional response.\n        //    If the UAC receives a reliable provisional response with an offer\n        //    (this would occur if the UAC sent an INVITE without an offer, in\n        //    which case the first reliable provisional response will contain the\n        //    offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        //    a reliable provisional response with an answer, it MAY generate an\n        //    additional offer in the PRACK.  If the UAS receives a PRACK with an\n        //    offer, it MUST place the answer in the 2xx to the PRACK.\n        //    Once an answer has been sent or received, the UA SHOULD establish the\n        //    session based on the parameters of the offer and answer, even if the\n        //    original INVITE itself has not been responded to.\n        //    If the UAS had placed a session description in any reliable\n        //    provisional response that is unacknowledged when the INVITE is\n        //    accepted, the UAS MUST delay sending the 2xx until the provisional\n        //    response is acknowledged.  Otherwise, the reliability of the 1xx\n        //    cannot be guaranteed, and reliability is needed for proper operation\n        //    of the offer/answer exchange.\n        //    All user agents that support this extension MUST support all\n        //    offer/answer exchanges that are possible based on the rules in\n        //    Section 13.2 of RFC 3261, based on the existence of INVITE and PRACK\n        //    as requests, and 2xx and reliable 1xx as non-failure reliable\n        //    responses.\n        //\n        // https://tools.ietf.org/html/rfc3262#section-5\n        ////\n        // The Offer/Answer Model Implementation\n        //\n        // The offer/answer model is straight forward, but one MUST READ the specifications...\n        //\n        // 13.2.1 Creating the Initial INVITE (paragraph 8 in particular)\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        //\n        // 5 The Offer/Answer Model and PRACK\n        // https://tools.ietf.org/html/rfc3262#section-5\n        //\n        // Session Initiation Protocol (SIP) Usage of the Offer/Answer Model\n        // https://tools.ietf.org/html/rfc6337\n        ////\n        ////\n        // TODO: The Offer/Answer Model Implementation\n        //\n        // Currently if `earlyMedia` is enabled and the INVITE request forks,\n        // the session is terminated if the early dialog does not match the\n        // confirmed dialog. This restriction make sense in a WebRTC environment,\n        // but there are other environments where this restriction does not hold.\n        //\n        // So while we currently cannot make the offer in INVITE+forking+webrtc\n        // case work, we propose doing the following...\n        //\n        // OPTION 1\n        // - add a `earlyMediaForking` option and\n        // - require SDH.setDescription() to be callable multiple times.\n        //\n        // OPTION 2\n        // 1) modify SDH Factory to provide an initial offer without giving us the SDH, and then...\n        // 2) stick that offer in the initial INVITE, and when 183 with initial answer is received...\n        // 3) ask SDH Factory if it supports \"earlyRemoteAnswer\"\n        //   a) if true, ask SDH Factory to createSDH(localOffer).then((sdh) => sdh.setDescription(remoteAnswer)\n        //   b) if false, defer getting a SDH until 2xx response is received\n        //\n        // Our supplied WebRTC SDH will default to behavior 3b which works in forking environment (without)\n        // early media if initial offer is in the INVITE). We will, however, provide an \"inviteWillNotFork\"\n        // option which if set to \"true\" will have our supplied WebRTC SDH behave in the 3a manner.\n        // That will result in\n        //  - early media working with initial offer in the INVITE, and...\n        //  - if the INVITE forks, the session terminating with an ERROR that reads like\n        //    \"You set 'inviteWillNotFork' to true but the INVITE forked. You can't eat your cake, and have it too.\"\n        //  - furthermore, we accept that users will report that error to us as \"bug\" regardless\n        //\n        // So, SDH Factory is going to end up with a new interface along the lines of...\n        //\n        // interface SessionDescriptionHandlerFactory {\n        //   makeLocalOffer(): Promise<ContentTypeAndBody>;\n        //   makeSessionDescriptionHandler(\n        //     initialOffer: ContentTypeAndBody, offerType: \"local\" | \"remote\"\n        //   ): Promise<SessionDescriptionHandler>;\n        //   supportsEarlyRemoteAnswer: boolean;\n        //   supportsContentType(contentType: string): boolean;\n        //   getDescription(description: ContentTypeAndBody): Promise<ContentTypeAndBody>\n        //   setDescription(description: ContentTypeAndBody): Promise<void>\n        // }\n        ////\n        // Send the INVITE request.\n        this.outgoingInviteRequest = this.userAgent.userAgentCore.invite(this.outgoingRequestMessage, {\n            onAccept: (inviteResponse) => {\n                // Our transaction layer is \"non-standard\" in that it will only\n                // pass us a 2xx response once per branch, so there is no need to\n                // worry about dealing with 2xx retransmissions. However, we can\n                // and do still get 2xx responses for multiple branches (when an\n                // INVITE is forked) which may create multiple confirmed dialogs.\n                // Herein we are acking and sending a bye to any confirmed dialogs\n                // which arrive beyond the first one. This is the desired behavior\n                // for most applications (but certainly not all).\n                // If we already received a confirmed dialog, ack & bye this additional confirmed session.\n                if (this.dialog) {\n                    this.logger.log(\"Additional confirmed dialog, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    // We do NOT transition state in this case (this is an \"extra\" dialog)\n                    return;\n                }\n                // If the user requested cancellation, ack & bye this session.\n                if (this.isCanceled) {\n                    this.logger.log(\"Canceled session accepted, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    this.stateTransition(SessionState.Terminated);\n                    return;\n                }\n                this.notifyReferer(inviteResponse);\n                this.onAccept(inviteResponse)\n                    .then(() => {\n                    this.disposeEarlyMedia();\n                })\n                    .catch(() => {\n                    this.disposeEarlyMedia();\n                })\n                    .then(() => {\n                    if (options.requestDelegate && options.requestDelegate.onAccept) {\n                        options.requestDelegate.onAccept(inviteResponse);\n                    }\n                });\n            },\n            onProgress: (inviteResponse) => {\n                // If the user requested cancellation, ignore response.\n                if (this.isCanceled) {\n                    return;\n                }\n                this.notifyReferer(inviteResponse);\n                this.onProgress(inviteResponse)\n                    .catch(() => {\n                    this.disposeEarlyMedia();\n                })\n                    .then(() => {\n                    if (options.requestDelegate && options.requestDelegate.onProgress) {\n                        options.requestDelegate.onProgress(inviteResponse);\n                    }\n                });\n            },\n            onRedirect: (inviteResponse) => {\n                this.notifyReferer(inviteResponse);\n                this.onRedirect(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onRedirect) {\n                    options.requestDelegate.onRedirect(inviteResponse);\n                }\n            },\n            onReject: (inviteResponse) => {\n                this.notifyReferer(inviteResponse);\n                this.onReject(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onReject) {\n                    options.requestDelegate.onReject(inviteResponse);\n                }\n            },\n            onTrying: (inviteResponse) => {\n                this.notifyReferer(inviteResponse);\n                this.onTrying(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onTrying) {\n                    options.requestDelegate.onTrying(inviteResponse);\n                }\n            }\n        });\n        return this.outgoingInviteRequest;\n    }\n    disposeEarlyMedia() {\n        this.earlyMediaSessionDescriptionHandlers.forEach((sessionDescriptionHandler) => {\n            sessionDescriptionHandler.close();\n        });\n        this.earlyMediaSessionDescriptionHandlers.clear();\n    }\n    notifyReferer(response) {\n        if (!this._referred) {\n            return;\n        }\n        if (!(this._referred instanceof Session)) {\n            throw new Error(\"Referred session not instance of session\");\n        }\n        if (!this._referred.dialog) {\n            return;\n        }\n        if (!response.message.statusCode) {\n            throw new Error(\"Status code undefined.\");\n        }\n        if (!response.message.reasonPhrase) {\n            throw new Error(\"Reason phrase undefined.\");\n        }\n        const statusCode = response.message.statusCode;\n        const reasonPhrase = response.message.reasonPhrase;\n        const body = `SIP/2.0 ${statusCode} ${reasonPhrase}`.trim();\n        const outgoingNotifyRequest = this._referred.dialog.notify(undefined, {\n            extraHeaders: [\"Event: refer\", \"Subscription-State: terminated\"],\n            body: {\n                contentDisposition: \"render\",\n                contentType: \"message/sipfrag\",\n                content: body\n            }\n        });\n        // The implicit subscription created by a REFER is the same as a\n        // subscription created with a SUBSCRIBE request.  The agent issuing the\n        // REFER can terminate this subscription prematurely by unsubscribing\n        // using the mechanisms described in [2].  Terminating a subscription,\n        // either by explicitly unsubscribing or rejecting NOTIFY, is not an\n        // indication that the referenced request should be withdrawn or\n        // abandoned.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.4\n        // FIXME: TODO: This should be done in a subscribe dialog to satisfy the above.\n        // If the notify is rejected, stop sending NOTIFY requests.\n        outgoingNotifyRequest.delegate = {\n            onReject: () => {\n                this._referred = undefined;\n            }\n        };\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 2xx response.\n     */\n    onAccept(inviteResponse) {\n        this.logger.log(\"Inviter.onAccept\");\n        // validate state\n        if (this.state !== SessionState.Establishing) {\n            this.logger.error(`Accept received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported behavior.\n        if (response.hasHeader(\"P-Asserted-Identity\")) {\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        }\n        // We have a confirmed dialog.\n        session.delegate = {\n            onAck: (ackRequest) => this.onAckRequest(ackRequest),\n            onBye: (byeRequest) => this.onByeRequest(byeRequest),\n            onInfo: (infoRequest) => this.onInfoRequest(infoRequest),\n            onInvite: (inviteRequest) => this.onInviteRequest(inviteRequest),\n            onMessage: (messageRequest) => this.onMessageRequest(messageRequest),\n            onNotify: (notifyRequest) => this.onNotifyRequest(notifyRequest),\n            onPrack: (prackRequest) => this.onPrackRequest(prackRequest),\n            onRefer: (referRequest) => this.onReferRequest(referRequest)\n        };\n        this._dialog = session;\n        switch (session.signalingState) {\n            case SignalingState.Initial:\n                // INVITE without offer, so MUST have offer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition(SessionState.Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case SignalingState.HaveLocalOffer:\n                // INVITE with offer, so MUST have answer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition(SessionState.Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case SignalingState.HaveRemoteOffer: {\n                // INVITE without offer, received offer in 2xx, so MUST send answer in ACK.\n                if (!this._dialog.offer) {\n                    throw new Error(`Session offer undefined in signaling state ${this._dialog.signalingState}.`);\n                }\n                const options = {\n                    sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                    sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                };\n                return this.setOfferAndGetAnswer(this._dialog.offer, options)\n                    .then((body) => {\n                    inviteResponse.ack({ body });\n                    this.stateTransition(SessionState.Established);\n                })\n                    .catch((error) => {\n                    this.ackAndBye(inviteResponse, 488, \"Invalid session description\");\n                    this.stateTransition(SessionState.Terminated);\n                    throw error;\n                });\n            }\n            case SignalingState.Stable: {\n                // If INVITE without offer and we have already completed the initial exchange.\n                if (this.earlyMediaSessionDescriptionHandlers.size > 0) {\n                    const sdh = this.earlyMediaSessionDescriptionHandlers.get(session.id);\n                    if (!sdh) {\n                        throw new Error(\"Session description handler undefined.\");\n                    }\n                    this.setSessionDescriptionHandler(sdh);\n                    this.earlyMediaSessionDescriptionHandlers.delete(session.id);\n                    inviteResponse.ack();\n                    this.stateTransition(SessionState.Established);\n                    return Promise.resolve();\n                }\n                // If INVITE with offer and we used an \"early\" answer in a provisional response for media\n                if (this.earlyMediaDialog) {\n                    // If early media dialog doesn't match confirmed dialog, we must unfortunately fail.\n                    // This limitation stems from how WebRTC currently implements its offer/answer model.\n                    // There are details elsewhere, but in short a WebRTC offer cannot be forked.\n                    if (this.earlyMediaDialog !== session) {\n                        if (this.earlyMedia) {\n                            const message = \"You have set the 'earlyMedia' option to 'true' which requires that your INVITE requests \" +\n                                \"do not fork and yet this INVITE request did in fact fork. Consequentially and not surprisingly \" +\n                                \"the end point which accepted the INVITE (confirmed dialog) does not match the end point with \" +\n                                \"which early media has been setup (early dialog) and thus this session is unable to proceed. \" +\n                                \"In accordance with the SIP specifications, the SIP servers your end point is connected to \" +\n                                \"determine if an INVITE forks and the forking behavior of those servers cannot be controlled \" +\n                                \"by this library. If you wish to use early media with this library you must configure those \" +\n                                \"servers accordingly. Alternatively you may set the 'earlyMedia' to 'false' which will allow \" +\n                                \"this library to function with any INVITE requests which do fork.\";\n                            this.logger.error(message);\n                        }\n                        const error = new Error(\"Early media dialog does not equal confirmed dialog, terminating session\");\n                        this.logger.error(error.message);\n                        this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                        this.stateTransition(SessionState.Terminated);\n                        return Promise.reject(error);\n                    }\n                    // Otherwise we are good to go.\n                    inviteResponse.ack();\n                    this.stateTransition(SessionState.Established);\n                    return Promise.resolve();\n                }\n                // If INVITE with offer and we have been waiting till now to apply the answer.\n                const answer = session.answer;\n                if (!answer) {\n                    throw new Error(\"Answer is undefined.\");\n                }\n                const options = {\n                    sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                    sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                };\n                return this.setAnswer(answer, options)\n                    .then(() => {\n                    // This session has completed an initial offer/answer exchange...\n                    let ackOptions;\n                    if (this._renderbody && this._rendertype) {\n                        ackOptions = {\n                            body: { contentDisposition: \"render\", contentType: this._rendertype, content: this._renderbody }\n                        };\n                    }\n                    inviteResponse.ack(ackOptions);\n                    this.stateTransition(SessionState.Established);\n                })\n                    .catch((error) => {\n                    this.logger.error(error.message);\n                    this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                    this.stateTransition(SessionState.Terminated);\n                    throw error;\n                });\n            }\n            case SignalingState.Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle provisional response to initial INVITE.\n     * @param inviteResponse - 1xx response.\n     */\n    onProgress(inviteResponse) {\n        var _a;\n        this.logger.log(\"Inviter.onProgress\");\n        // validate state\n        if (this.state !== SessionState.Establishing) {\n            this.logger.error(`Progress received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        if (!this.outgoingInviteRequest) {\n            throw new Error(\"Outgoing INVITE request undefined.\");\n        }\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported - Set assertedIdentity.\n        if (response.hasHeader(\"P-Asserted-Identity\")) {\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        }\n        // If a provisional response is received for an initial request, and\n        // that response contains a Require header field containing the option\n        // tag 100rel, the response is to be sent reliably.  If the response is\n        // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n        // ignored, and the procedures below MUST NOT be used.\n        // https://tools.ietf.org/html/rfc3262#section-4\n        const requireHeader = response.getHeader(\"require\");\n        const rseqHeader = response.getHeader(\"rseq\");\n        const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n        const responseReliable = !!rseq;\n        const extraHeaders = [];\n        if (responseReliable) {\n            extraHeaders.push(\"RAck: \" + response.getHeader(\"rseq\") + \" \" + response.getHeader(\"cseq\"));\n        }\n        switch (session.signalingState) {\n            case SignalingState.Initial:\n                // INVITE without offer and session still has no offer (and no answer).\n                if (responseReliable) {\n                    // Similarly, if a reliable provisional\n                    // response is the first reliable message sent back to the UAC, and the\n                    // INVITE did not contain an offer, one MUST appear in that reliable\n                    // provisional response.\n                    // https://tools.ietf.org/html/rfc3262#section-5\n                    this.logger.warn(\"First reliable provisional response received MUST contain an offer when INVITE does not contain an offer.\");\n                    // FIXME: Known popular UA's currently end up here...\n                    inviteResponse.prack({ extraHeaders });\n                }\n                return Promise.resolve();\n            case SignalingState.HaveLocalOffer:\n                // INVITE with offer and session only has that initial local offer.\n                if (responseReliable) {\n                    inviteResponse.prack({ extraHeaders });\n                }\n                return Promise.resolve();\n            case SignalingState.HaveRemoteOffer:\n                if (!responseReliable) {\n                    // The initial offer MUST be in either an INVITE or, if not there,\n                    // in the first reliable non-failure message from the UAS back to\n                    // the UAC.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // According to Section 13.2.1 of [RFC3261], 'The first reliable\n                    // non-failure message' must have an offer if there is no offer in the\n                    // INVITE request.  This means that the User Agent (UA) that receives\n                    // the INVITE request without an offer must include an offer in the\n                    // first reliable response with 100rel extension.  If no reliable\n                    // provisional response has been sent, the User Agent Server (UAS) must\n                    // include an offer when sending 2xx response.\n                    // https://tools.ietf.org/html/rfc6337#section-2.2\n                    this.logger.warn(\"Non-reliable provisional response MUST NOT contain an initial offer, discarding response.\");\n                    return Promise.resolve();\n                }\n                {\n                    // If the initial offer is in the first reliable non-failure\n                    // message from the UAS back to UAC, the answer MUST be in the\n                    // acknowledgement for that message\n                    const sdh = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions || {});\n                    if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) {\n                        this.delegate.onSessionDescriptionHandler(sdh, true);\n                    }\n                    this.earlyMediaSessionDescriptionHandlers.set(session.id, sdh);\n                    return sdh\n                        .setDescription(response.body, this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers)\n                        .then(() => sdh.getDescription(this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers))\n                        .then((description) => {\n                        const body = {\n                            contentDisposition: \"session\",\n                            contentType: description.contentType,\n                            content: description.body\n                        };\n                        inviteResponse.prack({ extraHeaders, body });\n                    })\n                        .catch((error) => {\n                        this.stateTransition(SessionState.Terminated);\n                        throw error;\n                    });\n                }\n            case SignalingState.Stable:\n                // This session has completed an initial offer/answer exchange, so...\n                // - INVITE with SDP and this provisional response MAY be reliable\n                // - INVITE without SDP and this provisional response MAY be reliable\n                if (responseReliable) {\n                    inviteResponse.prack({ extraHeaders });\n                }\n                if (this.earlyMedia && !this.earlyMediaDialog) {\n                    this.earlyMediaDialog = session;\n                    const answer = session.answer;\n                    if (!answer) {\n                        throw new Error(\"Answer is undefined.\");\n                    }\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setAnswer(answer, options).catch((error) => {\n                        this.stateTransition(SessionState.Terminated);\n                        throw error;\n                    });\n                }\n                return Promise.resolve();\n            case SignalingState.Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 3xx response.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onRedirect(inviteResponse) {\n        this.logger.log(\"Inviter.onRedirect\");\n        // validate state\n        if (this.state !== SessionState.Establishing && this.state !== SessionState.Terminating) {\n            this.logger.error(`Redirect received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 4xx, 5xx, or 6xx response.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onReject(inviteResponse) {\n        this.logger.log(\"Inviter.onReject\");\n        // validate state\n        if (this.state !== SessionState.Establishing && this.state !== SessionState.Terminating) {\n            this.logger.error(`Reject received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 100 response.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onTrying(inviteResponse) {\n        this.logger.log(\"Inviter.onTrying\");\n        // validate state\n        if (this.state !== SessionState.Establishing) {\n            this.logger.error(`Trying received while in state ${this.state}, dropping response`);\n            return;\n        }\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\n/**\n * A messager sends a {@link Message} (outgoing MESSAGE).\n * @public\n */\nexport class Messager {\n    /**\n     * Constructs a new instance of the `Messager` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param content - Content for the body of the message.\n     * @param contentType - Content type of the body of the message.\n     * @param options - Options bucket. See {@link MessagerOptions} for details.\n     */\n    constructor(userAgent, targetURI, content, contentType = \"text/plain\", options = {}) {\n        // Logger\n        this.logger = userAgent.getLogger(\"sip.Messager\");\n        // Default options params\n        options.params = options.params || {};\n        // URIs\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (options.params.fromUri) {\n            fromURI =\n                typeof options.params.fromUri === \"string\" ? Grammar.URIParse(options.params.fromUri) : options.params.fromUri;\n        }\n        if (!fromURI) {\n            throw new TypeError(\"Invalid from URI: \" + options.params.fromUri);\n        }\n        let toURI = targetURI;\n        if (options.params.toUri) {\n            toURI = typeof options.params.toUri === \"string\" ? Grammar.URIParse(options.params.toUri) : options.params.toUri;\n        }\n        if (!toURI) {\n            throw new TypeError(\"Invalid to URI: \" + options.params.toUri);\n        }\n        // Message params\n        const params = options.params ? Object.assign({}, options.params) : {};\n        // Extra headers\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Body\n        const contentDisposition = \"render\";\n        const body = {\n            contentDisposition,\n            contentType,\n            content\n        };\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage(C.MESSAGE, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // User agent\n        this.userAgent = userAgent;\n    }\n    /**\n     * Send the message.\n     */\n    message(options = {}) {\n        this.userAgent.userAgentCore.request(this.request, options.requestDelegate);\n        return Promise.resolve();\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { equivalentURI, URI } from \"../grammar/uri.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { RequestPendingError } from \"./exceptions/request-pending.js\";\nimport { RegistererState } from \"./registerer-state.js\";\n/**\n * A registerer registers a contact for an address of record (outgoing REGISTER).\n * @public\n */\nexport class Registerer {\n    /**\n     * Constructs a new instance of the `Registerer` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param options - Options bucket. See {@link RegistererOptions} for details.\n     */\n    constructor(userAgent, options = {}) {\n        this.disposed = false;\n        /** The contacts returned from the most recent accepted REGISTER request. */\n        this._contacts = [];\n        /** The number of seconds to wait before retrying to register. */\n        this._retryAfter = undefined;\n        /** The registration state. */\n        this._state = RegistererState.Initial;\n        /** True is waiting for final response to outstanding REGISTER request. */\n        this._waiting = false;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        // waiting emitter\n        this._waitingEventEmitter = new EmitterImpl();\n        // Set user agent\n        this.userAgent = userAgent;\n        // Default registrar is domain portion of user agent uri\n        const defaultUserAgentRegistrar = userAgent.configuration.uri.clone();\n        defaultUserAgentRegistrar.user = undefined;\n        // Initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign({}, Registerer.defaultOptions()), { registrar: defaultUserAgentRegistrar }), Registerer.stripUndefinedProperties(options));\n        // Make sure we are not using references to array options\n        this.options.extraContactHeaderParams = (this.options.extraContactHeaderParams || []).slice();\n        this.options.extraHeaders = (this.options.extraHeaders || []).slice();\n        // Make sure we are not using references to registrar uri\n        if (!this.options.registrar) {\n            throw new Error(\"Registrar undefined.\");\n        }\n        this.options.registrar = this.options.registrar.clone();\n        // Set instanceId and regId conditional defaults and validate\n        if (this.options.regId && !this.options.instanceId) {\n            this.options.instanceId = this.userAgent.instanceId;\n        }\n        else if (!this.options.regId && this.options.instanceId) {\n            this.options.regId = 1;\n        }\n        if (this.options.instanceId && Grammar.parse(this.options.instanceId, \"uuid\") === -1) {\n            throw new Error(\"Invalid instanceId.\");\n        }\n        if (this.options.regId && this.options.regId < 0) {\n            throw new Error(\"Invalid regId.\");\n        }\n        const registrar = this.options.registrar;\n        const fromURI = (this.options.params && this.options.params.fromUri) || userAgent.userAgentCore.configuration.aor;\n        const toURI = (this.options.params && this.options.params.toUri) || userAgent.configuration.uri;\n        const params = this.options.params || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage(C.REGISTER, registrar, fromURI, toURI, params, extraHeaders, undefined);\n        // Registration expires\n        this.expires = this.options.expires || Registerer.defaultExpires;\n        if (this.expires < 0) {\n            throw new Error(\"Invalid expires.\");\n        }\n        // Interval at which re-REGISTER requests are sent\n        this.refreshFrequency = this.options.refreshFrequency || Registerer.defaultRefreshFrequency;\n        if (this.refreshFrequency < 50 || this.refreshFrequency > 99) {\n            throw new Error(\"Invalid refresh frequency. The value represents a percentage of the expiration time and should be between 50 and 99.\");\n        }\n        // initialize logger\n        this.logger = userAgent.getLogger(\"sip.Registerer\");\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key) => {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch (key) {\n                    case \"registrar\":\n                        this.logger.log(\"· \" + key + \": \" + value);\n                        break;\n                    default:\n                        this.logger.log(\"· \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // Identifier\n        this.id = this.request.callId + this.request.from.parameters.tag;\n        // Add to the user agent's session collection.\n        this.userAgent._registerers[this.id] = this;\n    }\n    /** Default registerer options. */\n    static defaultOptions() {\n        return {\n            expires: Registerer.defaultExpires,\n            extraContactHeaderParams: [],\n            extraHeaders: [],\n            logConfiguration: true,\n            instanceId: \"\",\n            params: {},\n            regId: 0,\n            registrar: new URI(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            refreshFrequency: Registerer.defaultRefreshFrequency\n        };\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */\n    static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key) => {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                object[key] = options[key];\n            }\n            return object;\n        }, {});\n    }\n    /** The registered contacts. */\n    get contacts() {\n        return this._contacts.slice();\n    }\n    /**\n     * The number of seconds to wait before retrying to register.\n     * @defaultValue `undefined`\n     * @remarks\n     * When the server rejects a registration request, if it provides a suggested\n     * duration to wait before retrying, that value is available here when and if\n     * the state transitions to `Unsubscribed`. It is also available during the\n     * callback to `onReject` after a call to `register`. (Note that if the state\n     * if already `Unsubscribed`, a rejected request created by `register` will\n     * not cause the state to transition to `Unsubscribed`. One way to avoid this\n     * case is to dispose of `Registerer` when unregistered and create a new\n     * `Registerer` for any attempts to retry registering.)\n     * @example\n     * ```ts\n     * // Checking for retry after on state change\n     * registerer.stateChange.addListener((newState) => {\n     *   switch (newState) {\n     *     case RegistererState.Unregistered:\n     *       const retryAfter = registerer.retryAfter;\n     *       break;\n     *   }\n     * });\n     *\n     * // Checking for retry after on request rejection\n     * registerer.register({\n     *   requestDelegate: {\n     *     onReject: () => {\n     *       const retryAfter = registerer.retryAfter;\n     *     }\n     *   }\n     * });\n     * ```\n     */\n    get retryAfter() {\n        return this._retryAfter;\n    }\n    /** The registration state. */\n    get state() {\n        return this._state;\n    }\n    /** Emits when the registerer state changes. */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /** Destructor. */\n    dispose() {\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        this.logger.log(`Registerer ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's registerer collection\n        delete this.userAgent._registerers[this.id];\n        // If registered, unregisters and resolves after final response received.\n        return new Promise((resolve) => {\n            const doClose = () => {\n                // If we are registered, unregister and resolve after our state changes\n                if (!this.waiting && this._state === RegistererState.Registered) {\n                    this.stateChange.addListener(() => {\n                        this.terminated();\n                        resolve();\n                    }, { once: true });\n                    this.unregister();\n                    return;\n                }\n                // Otherwise just resolve\n                this.terminated();\n                resolve();\n            };\n            // If we are waiting for an outstanding request, wait for it to finish and then try closing.\n            // Otherwise just try closing.\n            if (this.waiting) {\n                this.waitingChange.addListener(() => {\n                    doClose();\n                }, { once: true });\n            }\n            else {\n                doClose();\n            }\n        });\n    }\n    /**\n     * Sends the REGISTER request.\n     * @remarks\n     * If successful, sends re-REGISTER requests prior to registration expiration until `unsubscribe()` is called.\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */\n    register(options = {}) {\n        if (this.state === RegistererState.Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            this.stateError();\n            throw new Error(\"Registerer disposed. Unable to register.\");\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new RequestPendingError(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        // Options\n        if (options.requestOptions) {\n            this.options = Object.assign(Object.assign({}, this.options), options.requestOptions);\n        }\n        // Extra headers\n        const extraHeaders = (this.options.extraHeaders || []).slice();\n        extraHeaders.push(\"Contact: \" + this.generateContactHeader(this.expires));\n        // this is UA.C.ALLOWED_METHODS, removed to get around circular dependency\n        extraHeaders.push(\"Allow: \" + [\"ACK\", \"CANCEL\", \"INVITE\", \"MESSAGE\", \"BYE\", \"OPTIONS\", \"INFO\", \"NOTIFY\", \"REFER\"].toString());\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        this.request.extraHeaders = extraHeaders;\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response) => {\n                let expires;\n                // FIXME: This does NOT appear to be to spec and should be removed.\n                // I haven't found anywhere that an Expires header may be used in a response.\n                if (response.message.hasHeader(\"expires\")) {\n                    expires = Number(response.message.getHeader(\"expires\"));\n                }\n                // 8. The registrar returns a 200 (OK) response.  The response MUST\n                // contain Contact header field values enumerating all current\n                // bindings.  Each Contact value MUST feature an \"expires\"\n                // parameter indicating its expiration interval chosen by the\n                // registrar.  The response SHOULD include a Date header field.\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                this._contacts = response.message.getHeaders(\"contact\");\n                let contacts = this._contacts.length;\n                if (!contacts) {\n                    this.logger.error(\"No Contact header in response to REGISTER, dropping response.\");\n                    this.unregistered();\n                    return;\n                }\n                // The 200 (OK) response from the registrar contains a list of Contact\n                // fields enumerating all current bindings.  The UA compares each\n                // contact address to see if it created the contact address, using\n                // comparison rules in Section 19.1.4.  If so, it updates the expiration\n                // time interval according to the expires parameter or, if absent, the\n                // Expires field value.  The UA then issues a REGISTER request for each\n                // of its bindings before the expiration interval has elapsed.\n                // https://tools.ietf.org/html/rfc3261#section-10.2.4\n                let contact;\n                while (contacts--) {\n                    contact = response.message.parseHeader(\"contact\", contacts);\n                    if (!contact) {\n                        throw new Error(\"Contact undefined\");\n                    }\n                    if (this.userAgent.contact.pubGruu && equivalentURI(contact.uri, this.userAgent.contact.pubGruu)) {\n                        expires = Number(contact.getParam(\"expires\"));\n                        break;\n                    }\n                    // If we are using a randomly generated user name (which is the default behavior)\n                    if (this.userAgent.configuration.contactName === \"\") {\n                        // compare the user portion of the URI under the assumption that it will be unique\n                        if (contact.uri.user === this.userAgent.contact.uri.user) {\n                            expires = Number(contact.getParam(\"expires\"));\n                            break;\n                        }\n                    }\n                    else {\n                        // otherwise use comparision rules in Section 19.1.4\n                        if (equivalentURI(contact.uri, this.userAgent.contact.uri)) {\n                            expires = Number(contact.getParam(\"expires\"));\n                            break;\n                        }\n                    }\n                    contact = undefined;\n                }\n                // There must be a matching contact.\n                if (contact === undefined) {\n                    this.logger.error(\"No Contact header pointing to us, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // The contact must have an expires.\n                if (expires === undefined) {\n                    this.logger.error(\"Contact pointing to us is missing expires parameter, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // Save gruu values\n                if (contact.hasParam(\"temp-gruu\")) {\n                    const gruu = contact.getParam(\"temp-gruu\");\n                    if (gruu) {\n                        this.userAgent.contact.tempGruu = Grammar.URIParse(gruu.replace(/\"/g, \"\"));\n                    }\n                }\n                if (contact.hasParam(\"pub-gruu\")) {\n                    const gruu = contact.getParam(\"pub-gruu\");\n                    if (gruu) {\n                        this.userAgent.contact.pubGruu = Grammar.URIParse(gruu.replace(/\"/g, \"\"));\n                    }\n                }\n                this.registered(expires);\n                if (options.requestDelegate && options.requestDelegate.onAccept) {\n                    options.requestDelegate.onAccept(response);\n                }\n                this.waitingToggle(false);\n            },\n            onProgress: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onProgress) {\n                    options.requestDelegate.onProgress(response);\n                }\n            },\n            onRedirect: (response) => {\n                this.logger.error(\"Redirect received. Not supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) {\n                    options.requestDelegate.onRedirect(response);\n                }\n                this.waitingToggle(false);\n            },\n            onReject: (response) => {\n                if (response.message.statusCode === 423) {\n                    // If a UA receives a 423 (Interval Too Brief) response, it MAY retry\n                    // the registration after making the expiration interval of all contact\n                    // addresses in the REGISTER request equal to or greater than the\n                    // expiration interval within the Min-Expires header field of the 423\n                    // (Interval Too Brief) response.\n                    // https://tools.ietf.org/html/rfc3261#section-10.2.8\n                    //\n                    // The registrar MAY choose an expiration less than the requested\n                    // expiration interval.  If and only if the requested expiration\n                    // interval is greater than zero AND smaller than one hour AND\n                    // less than a registrar-configured minimum, the registrar MAY\n                    // reject the registration with a response of 423 (Interval Too\n                    // Brief).  This response MUST contain a Min-Expires header field\n                    // that states the minimum expiration interval the registrar is\n                    // willing to honor.  It then skips the remaining steps.\n                    // https://tools.ietf.org/html/rfc3261#section-10.3\n                    if (!response.message.hasHeader(\"min-expires\")) {\n                        // This response MUST contain a Min-Expires header field\n                        this.logger.error(\"423 response received for REGISTER without Min-Expires, dropping response\");\n                        this.unregistered();\n                        this.waitingToggle(false);\n                        return;\n                    }\n                    // Increase our registration interval to the suggested minimum\n                    this.expires = Number(response.message.getHeader(\"min-expires\"));\n                    // Attempt the registration again immediately\n                    this.waitingToggle(false);\n                    this.register();\n                    return;\n                }\n                this.logger.warn(`Failed to register, status code ${response.message.statusCode}`);\n                // The Retry-After header field can be used with a 500 (Server Internal\n                // Error) or 503 (Service Unavailable) response to indicate how long the\n                // service is expected to be unavailable to the requesting client...\n                // https://tools.ietf.org/html/rfc3261#section-20.33\n                let retryAfterDuration = NaN;\n                if (response.message.statusCode === 500 || response.message.statusCode === 503) {\n                    const header = response.message.getHeader(\"retry-after\");\n                    if (header) {\n                        retryAfterDuration = Number.parseInt(header, undefined);\n                    }\n                }\n                // Set for the state change (if any) and the delegate callback (if any)\n                this._retryAfter = isNaN(retryAfterDuration) ? undefined : retryAfterDuration;\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) {\n                    options.requestDelegate.onReject(response);\n                }\n                this._retryAfter = undefined;\n                this.waitingToggle(false);\n            },\n            onTrying: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onTrying) {\n                    options.requestDelegate.onTrying(response);\n                }\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Sends the REGISTER request with expires equal to zero.\n     * @remarks\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */\n    unregister(options = {}) {\n        if (this.state === RegistererState.Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            if (this.state !== RegistererState.Registered) {\n                // allows unregister while disposing and registered\n                this.stateError();\n                throw new Error(\"Registerer disposed. Unable to register.\");\n            }\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new RequestPendingError(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        if (this._state !== RegistererState.Registered && !options.all) {\n            this.logger.warn(\"Not currently registered, but sending an unregister anyway.\");\n        }\n        // Extra headers\n        const extraHeaders = ((options.requestOptions && options.requestOptions.extraHeaders) || []).slice();\n        this.request.extraHeaders = extraHeaders;\n        // Registrations are soft state and expire unless refreshed, but can\n        // also be explicitly removed.  A client can attempt to influence the\n        // expiration interval selected by the registrar as described in Section\n        // 10.2.1.  A UA requests the immediate removal of a binding by\n        // specifying an expiration interval of \"0\" for that contact address in\n        // a REGISTER request.  UAs SHOULD support this mechanism so that\n        // bindings can be removed before their expiration interval has passed.\n        //\n        // The REGISTER-specific Contact header field value of \"*\" applies to\n        // all registrations, but it MUST NOT be used unless the Expires header\n        // field is present with a value of \"0\".\n        // https://tools.ietf.org/html/rfc3261#section-10.2.2\n        if (options.all) {\n            extraHeaders.push(\"Contact: *\");\n            extraHeaders.push(\"Expires: 0\");\n        }\n        else {\n            extraHeaders.push(\"Contact: \" + this.generateContactHeader(0));\n        }\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        // Pre-emptive clear the registration timer to avoid a race condition where\n        // this timer fires while waiting for a final response to the unsubscribe.\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response) => {\n                this._contacts = response.message.getHeaders(\"contact\"); // Update contacts\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onAccept) {\n                    options.requestDelegate.onAccept(response);\n                }\n                this.waitingToggle(false);\n            },\n            onProgress: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onProgress) {\n                    options.requestDelegate.onProgress(response);\n                }\n            },\n            onRedirect: (response) => {\n                this.logger.error(\"Unregister redirected. Not currently supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) {\n                    options.requestDelegate.onRedirect(response);\n                }\n                this.waitingToggle(false);\n            },\n            onReject: (response) => {\n                this.logger.error(`Unregister rejected with status code ${response.message.statusCode}`);\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) {\n                    options.requestDelegate.onReject(response);\n                }\n                this.waitingToggle(false);\n            },\n            onTrying: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onTrying) {\n                    options.requestDelegate.onTrying(response);\n                }\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Clear registration timers.\n     */\n    clearTimers() {\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        if (this.registrationExpiredTimer !== undefined) {\n            clearTimeout(this.registrationExpiredTimer);\n            this.registrationExpiredTimer = undefined;\n        }\n    }\n    /**\n     * Generate Contact Header\n     */\n    generateContactHeader(expires) {\n        let contact = this.userAgent.contact.toString({ register: true });\n        if (this.options.regId && this.options.instanceId) {\n            contact += \";reg-id=\" + this.options.regId;\n            contact += ';+sip.instance=\"<urn:uuid:' + this.options.instanceId + '>\"';\n        }\n        if (this.options.extraContactHeaderParams) {\n            this.options.extraContactHeaderParams.forEach((header) => {\n                contact += \";\" + header;\n            });\n        }\n        contact += \";expires=\" + expires;\n        return contact;\n    }\n    /**\n     * Helper function, called when registered.\n     */\n    registered(expires) {\n        this.clearTimers();\n        // Re-Register before the expiration interval has elapsed.\n        // For that, calculate the delay as a percentage of the expiration time\n        this.registrationTimer = setTimeout(() => {\n            this.registrationTimer = undefined;\n            this.register();\n        }, (this.refreshFrequency / 100) * expires * 1000);\n        // We are unregistered if the registration expires.\n        this.registrationExpiredTimer = setTimeout(() => {\n            this.logger.warn(\"Registration expired\");\n            this.unregistered();\n        }, expires * 1000);\n        if (this._state !== RegistererState.Registered) {\n            this.stateTransition(RegistererState.Registered);\n        }\n    }\n    /**\n     * Helper function, called when unregistered.\n     */\n    unregistered() {\n        this.clearTimers();\n        if (this._state !== RegistererState.Unregistered) {\n            this.stateTransition(RegistererState.Unregistered);\n        }\n    }\n    /**\n     * Helper function, called when terminated.\n     */\n    terminated() {\n        this.clearTimers();\n        if (this._state !== RegistererState.Terminated) {\n            this.stateTransition(RegistererState.Terminated);\n        }\n    }\n    /**\n     * Transition registration state.\n     */\n    stateTransition(newState) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch (this._state) {\n            case RegistererState.Initial:\n                if (newState !== RegistererState.Registered &&\n                    newState !== RegistererState.Unregistered &&\n                    newState !== RegistererState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case RegistererState.Registered:\n                if (newState !== RegistererState.Unregistered && newState !== RegistererState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case RegistererState.Unregistered:\n                if (newState !== RegistererState.Registered && newState !== RegistererState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case RegistererState.Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Registration transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === RegistererState.Terminated) {\n            this.dispose();\n        }\n    }\n    /** True if the registerer is currently waiting for final response to a REGISTER request. */\n    get waiting() {\n        return this._waiting;\n    }\n    /** Emits when the registerer waiting state changes. */\n    get waitingChange() {\n        return this._waitingEventEmitter;\n    }\n    /**\n     * Toggle waiting.\n     */\n    waitingToggle(waiting) {\n        if (this._waiting === waiting) {\n            throw new Error(`Invalid waiting transition from ${this._waiting} to ${waiting}`);\n        }\n        this._waiting = waiting;\n        this.logger.log(`Waiting toggled to ${this._waiting}`);\n        this._waitingEventEmitter.emit(this._waiting);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */\n    waitingWarning() {\n        let message = \"An attempt was made to send a REGISTER request while a prior one was still in progress.\";\n        message += \" RFC 3261 requires UAs MUST NOT send a new registration until they have received a final response\";\n        message += \" from the registrar for the previous one or the previous REGISTER request has timed out.\";\n        message += \" Note that if the transport disconnects, you still must wait for the prior request to time out before\";\n        message +=\n            \" sending a new REGISTER request or alternatively dispose of the current Registerer and create a new Registerer.\";\n        this.logger.warn(message);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */\n    stateError() {\n        const reason = this.state === RegistererState.Terminated ? \"is in 'Terminated' state\" : \"has been disposed\";\n        let message = `An attempt was made to send a REGISTER request when the Registerer ${reason}.`;\n        message += \" The Registerer transitions to 'Terminated' when Registerer.dispose() is called.\";\n        message += \" Perhaps you called UserAgent.stop() which dipsoses of all Registerers?\";\n        this.logger.error(message);\n    }\n}\nRegisterer.defaultExpires = 600;\nRegisterer.defaultRefreshFrequency = 99;\n","/**\n * {@link Registerer} state.\n * @remarks\n * The {@link Registerer} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   __________________________________________\n *                  |  __________________________              |\n * Registerer       | |                          v             v\n * Constructed -> Initial -> Registered -> Unregistered -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */\nexport var RegistererState;\n(function (RegistererState) {\n    RegistererState[\"Initial\"] = \"Initial\";\n    RegistererState[\"Registered\"] = \"Registered\";\n    RegistererState[\"Unregistered\"] = \"Unregistered\";\n    RegistererState[\"Terminated\"] = \"Terminated\";\n})(RegistererState = RegistererState || (RegistererState = {}));\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { URI } from \"../grammar/uri.js\";\nimport { DigestAuthentication } from \"../core/messages/digest-authentication.js\";\nimport { IncomingRequestMessage } from \"../core/messages/incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"../core/messages/incoming-response-message.js\";\nimport { Levels } from \"../core/log/levels.js\";\nimport { LoggerFactory } from \"../core/log/logger-factory.js\";\nimport { Parser } from \"../core/messages/parser.js\";\nimport { UserAgentCore } from \"../core/user-agent-core/user-agent-core.js\";\nimport { createRandomToken, utf8Length } from \"../core/messages/utils.js\";\nimport { defaultSessionDescriptionHandlerFactory } from \"../platform/web/session-description-handler/session-description-handler-factory-default.js\";\nimport { Transport as WebTransport } from \"../platform/web/transport/transport.js\";\nimport { LIBRARY_VERSION } from \"../version.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { Invitation } from \"./invitation.js\";\nimport { Inviter } from \"./inviter.js\";\nimport { Message } from \"./message.js\";\nimport { Notification } from \"./notification.js\";\nimport { SIPExtension, UserAgentRegisteredOptionTags } from \"./user-agent-options.js\";\nimport { UserAgentState } from \"./user-agent-state.js\";\n/**\n * A user agent sends and receives requests using a `Transport`.\n *\n * @remarks\n * A user agent (UA) is associated with a user via the user's SIP address of record (AOR)\n * and acts on behalf of that user to send and receive SIP requests. The user agent can\n * register to receive incoming requests, as well as create and send outbound messages.\n * The user agent also maintains the Transport over which its signaling travels.\n *\n * @public\n */\nexport class UserAgent {\n    /**\n     * Constructs a new instance of the `UserAgent` class.\n     * @param options - Options bucket. See {@link UserAgentOptions} for details.\n     */\n    constructor(options = {}) {\n        /** @internal */\n        this._publishers = {};\n        /** @internal */\n        this._registerers = {};\n        /** @internal */\n        this._sessions = {};\n        /** @internal */\n        this._subscriptions = {};\n        this._state = UserAgentState.Stopped;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        // initialize delegate\n        this.delegate = options.delegate;\n        // initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, UserAgent.defaultOptions()), { sipjsId: createRandomToken(5) }), { uri: new URI(\"sip\", \"anonymous.\" + createRandomToken(6), \"anonymous.invalid\") }), { viaHost: createRandomToken(12) + \".invalid\" }), UserAgent.stripUndefinedProperties(options));\n        // viaHost is hack\n        if (this.options.hackIpInContact) {\n            if (typeof this.options.hackIpInContact === \"boolean\" && this.options.hackIpInContact) {\n                const from = 1;\n                const to = 254;\n                const octet = Math.floor(Math.random() * (to - from + 1) + from);\n                // random Test-Net IP (http://tools.ietf.org/html/rfc5735)\n                this.options.viaHost = \"192.0.2.\" + octet;\n            }\n            else if (this.options.hackIpInContact) {\n                this.options.viaHost = this.options.hackIpInContact;\n            }\n        }\n        // initialize logger & logger factory\n        this.loggerFactory = new LoggerFactory();\n        this.logger = this.loggerFactory.getLogger(\"sip.UserAgent\");\n        this.loggerFactory.builtinEnabled = this.options.logBuiltinEnabled;\n        this.loggerFactory.connector = this.options.logConnector;\n        switch (this.options.logLevel) {\n            case \"error\":\n                this.loggerFactory.level = Levels.error;\n                break;\n            case \"warn\":\n                this.loggerFactory.level = Levels.warn;\n                break;\n            case \"log\":\n                this.loggerFactory.level = Levels.log;\n                break;\n            case \"debug\":\n                this.loggerFactory.level = Levels.debug;\n                break;\n            default:\n                break;\n        }\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key) => {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch (key) {\n                    case \"uri\":\n                    case \"sessionDescriptionHandlerFactory\":\n                        this.logger.log(\"· \" + key + \": \" + value);\n                        break;\n                    case \"authorizationPassword\":\n                        this.logger.log(\"· \" + key + \": \" + \"NOT SHOWN\");\n                        break;\n                    case \"transportConstructor\":\n                        this.logger.log(\"· \" + key + \": \" + value.name);\n                        break;\n                    default:\n                        this.logger.log(\"· \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // guard deprecated transport options (remove this in version 16.x)\n        if (this.options.transportOptions) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = this.options.transportOptions;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated.maxReconnectionAttempts;\n            const reconnectionTimeoutDeprecated = optionsDeprecated.reconnectionTimeout;\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (reconnectionTimeoutDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"reconnectionTimeout\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (options.reconnectionDelay === undefined && reconnectionTimeoutDeprecated !== undefined) {\n                this.options.reconnectionDelay = reconnectionTimeoutDeprecated;\n            }\n            if (options.reconnectionAttempts === undefined && maxReconnectionAttemptsDeprecated !== undefined) {\n                this.options.reconnectionAttempts = maxReconnectionAttemptsDeprecated;\n            }\n        }\n        // guard deprecated user agent options (remove this in version 16.x)\n        if (options.reconnectionDelay !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionDelay\" as has apparently been specified and has been deprecated. ` +\n                \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        if (options.reconnectionAttempts !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionAttempts\" as has apparently been specified and has been deprecated. ` +\n                \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        // Initialize Transport\n        this._transport = new this.options.transportConstructor(this.getLogger(\"sip.Transport\"), this.options.transportOptions);\n        this.initTransportCallbacks();\n        // Initialize Contact\n        this._contact = this.initContact();\n        // Set instance id\n        this._instanceId = this.options.instanceId ? this.options.instanceId : UserAgent.newUUID();\n        if (Grammar.parse(this._instanceId, \"uuid\") === -1) {\n            throw new Error(\"Invalid instanceId.\");\n        }\n        // Initialize UserAgentCore\n        this._userAgentCore = this.initCore();\n    }\n    /**\n     * Create a URI instance from a string.\n     * @param uri - The string to parse.\n     *\n     * @remarks\n     * Returns undefined if the syntax of the URI is invalid.\n     * The syntax must conform to a SIP URI as defined in the RFC.\n     * 25 Augmented BNF for the SIP Protocol\n     * https://tools.ietf.org/html/rfc3261#section-25\n     *\n     * @example\n     * ```ts\n     * const uri = UserAgent.makeURI(\"sip:edgar@example.com\");\n     * ```\n     */\n    static makeURI(uri) {\n        return Grammar.URIParse(uri);\n    }\n    /** Default user agent options. */\n    static defaultOptions() {\n        return {\n            allowLegacyNotifications: false,\n            authorizationHa1: \"\",\n            authorizationPassword: \"\",\n            authorizationUsername: \"\",\n            delegate: {},\n            contactName: \"\",\n            contactParams: { transport: \"ws\" },\n            displayName: \"\",\n            forceRport: false,\n            gracefulShutdown: true,\n            hackAllowUnregisteredOptionTags: false,\n            hackIpInContact: false,\n            hackViaTcp: false,\n            instanceId: \"\",\n            instanceIdAlwaysAdded: false,\n            logBuiltinEnabled: true,\n            logConfiguration: true,\n            logConnector: () => {\n                /* noop */\n            },\n            logLevel: \"log\",\n            noAnswerTimeout: 60,\n            preloadedRouteSet: [],\n            reconnectionAttempts: 0,\n            reconnectionDelay: 4,\n            sendInitialProvisionalResponse: true,\n            sessionDescriptionHandlerFactory: defaultSessionDescriptionHandlerFactory(),\n            sessionDescriptionHandlerFactoryOptions: {},\n            sipExtension100rel: SIPExtension.Unsupported,\n            sipExtensionReplaces: SIPExtension.Unsupported,\n            sipExtensionExtraSupported: [],\n            sipjsId: \"\",\n            transportConstructor: WebTransport,\n            transportOptions: {},\n            uri: new URI(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            userAgentString: \"SIP.js/\" + LIBRARY_VERSION,\n            viaHost: \"\"\n        };\n    }\n    // http://stackoverflow.com/users/109538/broofa\n    static newUUID() {\n        const UUID = \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, (c) => {\n            const r = Math.floor(Math.random() * 16);\n            const v = c === \"x\" ? r : (r % 4) + 8;\n            return v.toString(16);\n        });\n        return UUID;\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */\n    static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key) => {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                object[key] = options[key];\n            }\n            return object;\n        }, {});\n    }\n    /**\n     * User agent configuration.\n     */\n    get configuration() {\n        return this.options;\n    }\n    /**\n     * User agent contact.\n     */\n    get contact() {\n        return this._contact;\n    }\n    /**\n     * User agent instance id.\n     */\n    get instanceId() {\n        return this._instanceId;\n    }\n    /**\n     * User agent state.\n     */\n    get state() {\n        return this._state;\n    }\n    /**\n     * User agent state change emitter.\n     */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * User agent transport.\n     */\n    get transport() {\n        return this._transport;\n    }\n    /**\n     * User agent core.\n     */\n    get userAgentCore() {\n        return this._userAgentCore;\n    }\n    /**\n     * The logger.\n     */\n    getLogger(category, label) {\n        return this.loggerFactory.getLogger(category, label);\n    }\n    /**\n     * The logger factory.\n     */\n    getLoggerFactory() {\n        return this.loggerFactory;\n    }\n    /**\n     * True if transport is connected.\n     */\n    isConnected() {\n        return this.transport.isConnected();\n    }\n    /**\n     * Reconnect the transport.\n     */\n    reconnect() {\n        if (this.state === UserAgentState.Stopped) {\n            return Promise.reject(new Error(\"User agent stopped.\"));\n        }\n        // Make sure we don't call synchronously\n        return Promise.resolve().then(() => this.transport.connect());\n    }\n    /**\n     * Start the user agent.\n     *\n     * @remarks\n     * Resolves if transport connects, otherwise rejects.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * @example\n     * ```ts\n     * userAgent.start()\n     *   .then(() => {\n     *     // userAgent.isConnected() === true\n     *   })\n     *   .catch((error: Error) => {\n     *     // userAgent.isConnected() === false\n     *   });\n     * ```\n     */\n    start() {\n        if (this.state === UserAgentState.Started) {\n            this.logger.warn(`User agent already started`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Starting ${this.configuration.uri}`);\n        // Transition state\n        this.transitionState(UserAgentState.Started);\n        return this.transport.connect();\n    }\n    /**\n     * Stop the user agent.\n     *\n     * @remarks\n     * Resolves when the user agent has completed a graceful shutdown.\n     * ```txt\n     * 1) Sessions terminate.\n     * 2) Registerers unregister.\n     * 3) Subscribers unsubscribe.\n     * 4) Publishers unpublish.\n     * 5) Transport disconnects.\n     * 6) User Agent Core resets.\n     * ```\n     * The user agent state transistions to stopped once these steps have been completed.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * NOTE: While this is a \"graceful shutdown\", it can also be very slow one if you\n     * are waiting for the returned Promise to resolve. The disposal of the clients and\n     * dialogs is done serially - waiting on one to finish before moving on to the next.\n     * This can be slow if there are lot of subscriptions to unsubscribe for example.\n     *\n     * THE SLOW PACE IS INTENTIONAL!\n     * While one could spin them all down in parallel, this could slam the remote server.\n     * It is bad practice to denial of service attack (DoS attack) servers!!!\n     * Moreover, production servers will automatically blacklist clients which send too\n     * many requests in too short a period of time - dropping any additional requests.\n     *\n     * If a different approach to disposing is needed, one can implement whatever is\n     * needed and execute that prior to calling `stop()`. Alternatively one may simply\n     * not wait for the Promise returned by `stop()` to complete.\n     */\n    async stop() {\n        if (this.state === UserAgentState.Stopped) {\n            this.logger.warn(`User agent already stopped`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Stopping ${this.configuration.uri}`);\n        // The default behavior is to cleanup dialogs and registrations. This is not that...\n        if (!this.options.gracefulShutdown) {\n            // Dispose of the transport (disconnecting)\n            this.logger.log(`Dispose of transport`);\n            this.transport.dispose().catch((error) => {\n                this.logger.error(error.message);\n                throw error;\n            });\n            // Dispose of the user agent core (resetting)\n            this.logger.log(`Dispose of core`);\n            this.userAgentCore.dispose();\n            // Reset dialogs and registrations\n            this._publishers = {};\n            this._registerers = {};\n            this._sessions = {};\n            this._subscriptions = {};\n            this.transitionState(UserAgentState.Stopped);\n            return Promise.resolve();\n        }\n        // Be careful here to use a local references as start() can be called\n        // again before we complete and we don't want to touch new clients\n        // and we don't want to step on the new instances (or vice versa).\n        const publishers = Object.assign({}, this._publishers);\n        const registerers = Object.assign({}, this._registerers);\n        const sessions = Object.assign({}, this._sessions);\n        const subscriptions = Object.assign({}, this._subscriptions);\n        const transport = this.transport;\n        const userAgentCore = this.userAgentCore;\n        //\n        // At this point we have completed the state transition and everything\n        // following will effectively run async and MUST NOT cause any issues\n        // if UserAgent.start() is called while the following code continues.\n        //\n        // TODO: Minor optimization.\n        // The disposal in all cases involves, in part, sending messages which\n        // is not worth doing if the transport is not connected as we know attempting\n        // to send messages will be futile. But none of these disposal methods check\n        // if that's is the case and it would be easy for them to do so at this point.\n        // Dispose of Registerers\n        this.logger.log(`Dispose of registerers`);\n        for (const id in registerers) {\n            if (registerers[id]) {\n                await registerers[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._registerers[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of Sessions\n        this.logger.log(`Dispose of sessions`);\n        for (const id in sessions) {\n            if (sessions[id]) {\n                await sessions[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._sessions[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of Subscriptions\n        this.logger.log(`Dispose of subscriptions`);\n        for (const id in subscriptions) {\n            if (subscriptions[id]) {\n                await subscriptions[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._subscriptions[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of Publishers\n        this.logger.log(`Dispose of publishers`);\n        for (const id in publishers) {\n            if (publishers[id]) {\n                await publishers[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._publishers[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of the transport (disconnecting)\n        this.logger.log(`Dispose of transport`);\n        await transport.dispose().catch((error) => {\n            this.logger.error(error.message);\n            throw error;\n        });\n        // Dispose of the user agent core (resetting)\n        this.logger.log(`Dispose of core`);\n        userAgentCore.dispose();\n        // Transition state\n        this.transitionState(UserAgentState.Stopped);\n    }\n    /**\n     * Used to avoid circular references.\n     * @internal\n     */\n    _makeInviter(targetURI, options) {\n        return new Inviter(this, targetURI, options);\n    }\n    /**\n     * Attempt reconnection up to `maxReconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */\n    attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Maximum reconnection attempts reached`);\n            return;\n        }\n        this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        setTimeout(() => {\n            this.reconnect()\n                .then(() => {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n            })\n                .catch((error) => {\n                this.logger.error(error.message);\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Initialize contact.\n     */\n    initContact() {\n        const contactName = this.options.contactName !== \"\" ? this.options.contactName : createRandomToken(8);\n        const contactParams = this.options.contactParams;\n        const contact = {\n            pubGruu: undefined,\n            tempGruu: undefined,\n            uri: new URI(\"sip\", contactName, this.options.viaHost, undefined, contactParams),\n            toString: (contactToStringOptions = {}) => {\n                const anonymous = contactToStringOptions.anonymous || false;\n                const outbound = contactToStringOptions.outbound || false;\n                const register = contactToStringOptions.register || false;\n                let contactString = \"<\";\n                // 3.3.  Using a GRUU\n                // Once a user agent obtains GRUUs from the registrar, it uses them in\n                // several ways.  First, it uses them as the contents of the Contact\n                // header field in non-REGISTER requests and responses that it emits\n                // (for example, an INVITE request and 200 OK response).\n                // https://datatracker.ietf.org/doc/html/rfc5627#section-3.3\n                if (anonymous) {\n                    contactString +=\n                        this.contact.tempGruu ||\n                            `sip:anonymous@anonymous.invalid;transport=${contactParams.transport ? contactParams.transport : \"ws\"}`;\n                }\n                else if (register) {\n                    contactString += this.contact.uri;\n                }\n                else {\n                    contactString += this.contact.pubGruu || this.contact.uri;\n                }\n                if (outbound) {\n                    contactString += \";ob\";\n                }\n                contactString += \">\";\n                if (this.options.instanceIdAlwaysAdded) {\n                    contactString += ';+sip.instance=\"<urn:uuid:' + this._instanceId + '>\"';\n                }\n                return contactString;\n            }\n        };\n        return contact;\n    }\n    /**\n     * Initialize user agent core.\n     */\n    initCore() {\n        // supported options\n        let supportedOptionTags = [];\n        supportedOptionTags.push(\"outbound\"); // TODO: is this really supported?\n        if (this.options.sipExtension100rel === SIPExtension.Supported) {\n            supportedOptionTags.push(\"100rel\");\n        }\n        if (this.options.sipExtensionReplaces === SIPExtension.Supported) {\n            supportedOptionTags.push(\"replaces\");\n        }\n        if (this.options.sipExtensionExtraSupported) {\n            supportedOptionTags.push(...this.options.sipExtensionExtraSupported);\n        }\n        if (!this.options.hackAllowUnregisteredOptionTags) {\n            supportedOptionTags = supportedOptionTags.filter((optionTag) => UserAgentRegisteredOptionTags[optionTag]);\n        }\n        supportedOptionTags = Array.from(new Set(supportedOptionTags)); // array of unique values\n        // FIXME: TODO: This was ported, but this is and was just plain broken.\n        const supportedOptionTagsResponse = supportedOptionTags.slice();\n        if (this.contact.pubGruu || this.contact.tempGruu) {\n            supportedOptionTagsResponse.push(\"gruu\");\n        }\n        // core configuration\n        const userAgentCoreConfiguration = {\n            aor: this.options.uri,\n            contact: this.contact,\n            displayName: this.options.displayName,\n            loggerFactory: this.loggerFactory,\n            hackViaTcp: this.options.hackViaTcp,\n            routeSet: this.options.preloadedRouteSet,\n            supportedOptionTags,\n            supportedOptionTagsResponse,\n            sipjsId: this.options.sipjsId,\n            userAgentHeaderFieldValue: this.options.userAgentString,\n            viaForceRport: this.options.forceRport,\n            viaHost: this.options.viaHost,\n            authenticationFactory: () => {\n                const username = this.options.authorizationUsername\n                    ? this.options.authorizationUsername\n                    : this.options.uri.user; // if authorization username not provided, use uri user as username\n                const password = this.options.authorizationPassword ? this.options.authorizationPassword : undefined;\n                const ha1 = this.options.authorizationHa1 ? this.options.authorizationHa1 : undefined;\n                return new DigestAuthentication(this.getLoggerFactory(), ha1, username, password);\n            },\n            transportAccessor: () => this.transport\n        };\n        const userAgentCoreDelegate = {\n            onInvite: (incomingInviteRequest) => {\n                var _a;\n                const invitation = new Invitation(this, incomingInviteRequest);\n                incomingInviteRequest.delegate = {\n                    onCancel: (cancel) => {\n                        invitation._onCancel(cancel);\n                    },\n                    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                    onTransportError: (error) => {\n                        // A server transaction MUST NOT discard transaction state based only on\n                        // encountering a non-recoverable transport error when sending a\n                        // response.  Instead, the associated INVITE server transaction state\n                        // machine MUST remain in its current state.  (Timers will eventually\n                        // cause it to transition to the \"Terminated\" state).\n                        // https://tools.ietf.org/html/rfc6026#section-7.1\n                        // As noted in the comment above, we are to leaving it to the transaction\n                        // timers to eventually cause the transaction to sort itself out in the case\n                        // of a transport failure in an invite server transaction. This delegate method\n                        // is here simply here for completeness and to make it clear that it provides\n                        // nothing more than informational hook into the core. That is, if you think\n                        // you should be trying to deal with a transport error here, you are likely wrong.\n                        this.logger.error(\"A transport error has occurred while handling an incoming INVITE request.\");\n                    }\n                };\n                // FIXME: Ported - 100 Trying send should be configurable.\n                // Only required if TU will not respond in 200ms.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                incomingInviteRequest.trying();\n                // The Replaces header contains information used to match an existing\n                // SIP dialog (call-id, to-tag, and from-tag).  Upon receiving an INVITE\n                // with a Replaces header, the User Agent (UA) attempts to match this\n                // information with a confirmed or early dialog.\n                // https://tools.ietf.org/html/rfc3891#section-3\n                if (this.options.sipExtensionReplaces !== SIPExtension.Unsupported) {\n                    const message = incomingInviteRequest.message;\n                    const replaces = message.parseHeader(\"replaces\");\n                    if (replaces) {\n                        const callId = replaces.call_id;\n                        if (typeof callId !== \"string\") {\n                            throw new Error(\"Type of call id is not string\");\n                        }\n                        const toTag = replaces.replaces_to_tag;\n                        if (typeof toTag !== \"string\") {\n                            throw new Error(\"Type of to tag is not string\");\n                        }\n                        const fromTag = replaces.replaces_from_tag;\n                        if (typeof fromTag !== \"string\") {\n                            throw new Error(\"type of from tag is not string\");\n                        }\n                        const targetDialogId = callId + toTag + fromTag;\n                        const targetDialog = this.userAgentCore.dialogs.get(targetDialogId);\n                        // If no match is found, the UAS rejects the INVITE and returns a 481\n                        // Call/Transaction Does Not Exist response.  Likewise, if the Replaces\n                        // header field matches a dialog which was not created with an INVITE,\n                        // the UAS MUST reject the request with a 481 response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog) {\n                            invitation.reject({ statusCode: 481 });\n                            return;\n                        }\n                        // If the Replaces header field matches a confirmed dialog, it checks\n                        // for the presence of the \"early-only\" flag in the Replaces header\n                        // field.  (This flag allows the UAC to prevent a potentially\n                        // undesirable race condition described in Section 7.1.) If the flag is\n                        // present, the UA rejects the request with a 486 Busy response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog.early && replaces.early_only === true) {\n                            invitation.reject({ statusCode: 486 });\n                            return;\n                        }\n                        // Provide a handle on the session being replaced.\n                        const targetSession = this._sessions[callId + fromTag] || this._sessions[callId + toTag] || undefined;\n                        if (!targetSession) {\n                            throw new Error(\"Session does not exist.\");\n                        }\n                        invitation._replacee = targetSession;\n                    }\n                }\n                // Delegate invitation handling.\n                if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) {\n                    if (invitation.autoSendAnInitialProvisionalResponse) {\n                        invitation.progress().then(() => {\n                            var _a;\n                            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) === undefined) {\n                                throw new Error(\"onInvite undefined.\");\n                            }\n                            this.delegate.onInvite(invitation);\n                        });\n                        return;\n                    }\n                    this.delegate.onInvite(invitation);\n                    return;\n                }\n                // A common scenario occurs when the callee is currently not willing or\n                // able to take additional calls at this end system.  A 486 (Busy Here)\n                // SHOULD be returned in such a scenario.\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n                invitation.reject({ statusCode: 486 });\n            },\n            onMessage: (incomingMessageRequest) => {\n                if (this.delegate && this.delegate.onMessage) {\n                    const message = new Message(incomingMessageRequest);\n                    this.delegate.onMessage(message);\n                }\n                else {\n                    // Accept the MESSAGE request, but do nothing with it.\n                    incomingMessageRequest.accept();\n                }\n            },\n            onNotify: (incomingNotifyRequest) => {\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                if (this.delegate && this.delegate.onNotify) {\n                    const notification = new Notification(incomingNotifyRequest);\n                    this.delegate.onNotify(notification);\n                }\n                else {\n                    // Per the above which obsoletes https://tools.ietf.org/html/rfc3265,\n                    // the use of out of dialog NOTIFY is obsolete, but...\n                    if (this.options.allowLegacyNotifications) {\n                        incomingNotifyRequest.accept(); // Accept the NOTIFY request, but do nothing with it.\n                    }\n                    else {\n                        incomingNotifyRequest.reject({ statusCode: 481 });\n                    }\n                }\n            },\n            onRefer: (incomingReferRequest) => {\n                this.logger.warn(\"Received an out of dialog REFER request\");\n                // TOOD: this.delegate.onRefer(...)\n                if (this.delegate && this.delegate.onReferRequest) {\n                    this.delegate.onReferRequest(incomingReferRequest);\n                }\n                else {\n                    incomingReferRequest.reject({ statusCode: 405 });\n                }\n            },\n            onRegister: (incomingRegisterRequest) => {\n                this.logger.warn(\"Received an out of dialog REGISTER request\");\n                // TOOD: this.delegate.onRegister(...)\n                if (this.delegate && this.delegate.onRegisterRequest) {\n                    this.delegate.onRegisterRequest(incomingRegisterRequest);\n                }\n                else {\n                    incomingRegisterRequest.reject({ statusCode: 405 });\n                }\n            },\n            onSubscribe: (incomingSubscribeRequest) => {\n                this.logger.warn(\"Received an out of dialog SUBSCRIBE request\");\n                // TOOD: this.delegate.onSubscribe(...)\n                if (this.delegate && this.delegate.onSubscribeRequest) {\n                    this.delegate.onSubscribeRequest(incomingSubscribeRequest);\n                }\n                else {\n                    incomingSubscribeRequest.reject({ statusCode: 405 });\n                }\n            }\n        };\n        return new UserAgentCore(userAgentCoreConfiguration, userAgentCoreDelegate);\n    }\n    initTransportCallbacks() {\n        this.transport.onConnect = () => this.onTransportConnect();\n        this.transport.onDisconnect = (error) => this.onTransportDisconnect(error);\n        this.transport.onMessage = (message) => this.onTransportMessage(message);\n    }\n    onTransportConnect() {\n        if (this.state === UserAgentState.Stopped) {\n            return;\n        }\n        if (this.delegate && this.delegate.onConnect) {\n            this.delegate.onConnect();\n        }\n    }\n    onTransportDisconnect(error) {\n        if (this.state === UserAgentState.Stopped) {\n            return;\n        }\n        if (this.delegate && this.delegate.onDisconnect) {\n            this.delegate.onDisconnect(error);\n        }\n        // Only attempt to reconnect if network/server dropped the connection.\n        if (error && this.options.reconnectionAttempts > 0) {\n            this.attemptReconnection();\n        }\n    }\n    onTransportMessage(messageString) {\n        const message = Parser.parseMessage(messageString, this.getLogger(\"sip.Parser\"));\n        if (!message) {\n            this.logger.warn(\"Failed to parse incoming message. Dropping.\");\n            return;\n        }\n        if (this.state === UserAgentState.Stopped && message instanceof IncomingRequestMessage) {\n            this.logger.warn(`Received ${message.method} request while stopped. Dropping.`);\n            return;\n        }\n        // A valid SIP request formulated by a UAC MUST, at a minimum, contain\n        // the following header fields: To, From, CSeq, Call-ID, Max-Forwards,\n        // and Via; all of these header fields are mandatory in all SIP\n        // requests.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1\n        const hasMinimumHeaders = () => {\n            const mandatoryHeaders = [\"from\", \"to\", \"call_id\", \"cseq\", \"via\"];\n            for (const header of mandatoryHeaders) {\n                if (!message.hasHeader(header)) {\n                    this.logger.warn(`Missing mandatory header field : ${header}.`);\n                    return false;\n                }\n            }\n            return true;\n        };\n        // Request Checks\n        if (message instanceof IncomingRequestMessage) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Request missing mandatory header field. Dropping.`);\n                return;\n            }\n            // FIXME: This is non-standard and should be a configurable behavior (desirable regardless).\n            // Custom SIP.js check to reject request from ourself (this instance of SIP.js).\n            // This is port of SanityCheck.rfc3261_16_3_4().\n            if (!message.toTag && message.callId.substr(0, 5) === this.options.sipjsId) {\n                this.userAgentCore.replyStateless(message, { statusCode: 482 });\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_request().\n            const len = utf8Length(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.userAgentCore.replyStateless(message, { statusCode: 400 });\n                return;\n            }\n        }\n        // Response Checks\n        if (message instanceof IncomingResponseMessage) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Response missing mandatory header field. Dropping.`);\n                return;\n            }\n            // Custom SIP.js check to drop responses if multiple Via headers.\n            // This is port of SanityCheck.rfc3261_8_1_3_3().\n            if (message.getHeaders(\"via\").length > 1) {\n                this.logger.warn(\"More than one Via header field present in the response. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to drop responses if bad Via header.\n            // This is port of SanityCheck.rfc3261_18_1_2().\n            if (message.via.host !== this.options.viaHost || message.via.port !== undefined) {\n                this.logger.warn(\"Via sent-by in the response does not match UA Via host value. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_response().\n            const len = utf8Length(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.logger.warn(\"Message body length is lower than the value in Content-Length header field. Dropping.\");\n                return;\n            }\n        }\n        // Handle Request\n        if (message instanceof IncomingRequestMessage) {\n            this.userAgentCore.receiveIncomingRequestFromTransport(message);\n            return;\n        }\n        // Handle Response\n        if (message instanceof IncomingResponseMessage) {\n            this.userAgentCore.receiveIncomingResponseFromTransport(message);\n            return;\n        }\n        throw new Error(\"Invalid message type.\");\n    }\n    /**\n     * Transition state.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    transitionState(newState, error) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate state transition\n        switch (this._state) {\n            case UserAgentState.Started:\n                if (newState !== UserAgentState.Stopped) {\n                    invalidTransition();\n                }\n                break;\n            case UserAgentState.Stopped:\n                if (newState !== UserAgentState.Started) {\n                    invalidTransition();\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        this.logger.log(`Transitioned from ${this._state} to ${newState}`);\n        this._state = newState;\n        this._stateEventEmitter.emit(this._state);\n    }\n}\n","import { Md5 } from \"./md5.js\";\nimport { createRandomToken } from \"./utils.js\";\nfunction MD5(s) {\n    return Md5.hashStr(s);\n}\n/**\n * Digest Authentication.\n * @internal\n */\nexport class DigestAuthentication {\n    /**\n     * Constructor.\n     * @param loggerFactory - LoggerFactory.\n     * @param username - Username.\n     * @param password - Password.\n     */\n    constructor(loggerFactory, ha1, username, password) {\n        this.logger = loggerFactory.getLogger(\"sipjs.digestauthentication\");\n        this.username = username;\n        this.password = password;\n        this.ha1 = ha1;\n        this.nc = 0;\n        this.ncHex = \"00000000\";\n    }\n    /**\n     * Performs Digest authentication given a SIP request and the challenge\n     * received in a response to that request.\n     * @param request -\n     * @param challenge -\n     * @returns true if credentials were successfully generated, false otherwise.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    authenticate(request, challenge, body) {\n        // Inspect and validate the challenge.\n        this.algorithm = challenge.algorithm;\n        this.realm = challenge.realm;\n        this.nonce = challenge.nonce;\n        this.opaque = challenge.opaque;\n        this.stale = challenge.stale;\n        if (this.algorithm) {\n            if (this.algorithm !== \"MD5\") {\n                this.logger.warn(\"challenge with Digest algorithm different than 'MD5', authentication aborted\");\n                return false;\n            }\n        }\n        else {\n            this.algorithm = \"MD5\";\n        }\n        if (!this.realm) {\n            this.logger.warn(\"challenge without Digest realm, authentication aborted\");\n            return false;\n        }\n        if (!this.nonce) {\n            this.logger.warn(\"challenge without Digest nonce, authentication aborted\");\n            return false;\n        }\n        // 'qop' can contain a list of values (Array). Let's choose just one.\n        if (challenge.qop) {\n            if (challenge.qop.indexOf(\"auth\") > -1) {\n                this.qop = \"auth\";\n            }\n            else if (challenge.qop.indexOf(\"auth-int\") > -1) {\n                this.qop = \"auth-int\";\n            }\n            else {\n                // Otherwise 'qop' is present but does not contain 'auth' or 'auth-int', so abort here.\n                this.logger.warn(\"challenge without Digest qop different than 'auth' or 'auth-int', authentication aborted\");\n                return false;\n            }\n        }\n        else {\n            this.qop = undefined;\n        }\n        // Fill other attributes.\n        this.method = request.method;\n        this.uri = request.ruri;\n        this.cnonce = createRandomToken(12);\n        this.nc += 1;\n        this.updateNcHex();\n        // nc-value = 8LHEX. Max value = 'FFFFFFFF'.\n        if (this.nc === 4294967296) {\n            this.nc = 1;\n            this.ncHex = \"00000001\";\n        }\n        // Calculate the Digest \"response\" value.\n        this.calculateResponse(body);\n        return true;\n    }\n    /**\n     * Return the Proxy-Authorization or WWW-Authorization header value.\n     */\n    toString() {\n        const authParams = [];\n        if (!this.response) {\n            throw new Error(\"response field does not exist, cannot generate Authorization header\");\n        }\n        authParams.push(\"algorithm=\" + this.algorithm);\n        authParams.push('username=\"' + this.username + '\"');\n        authParams.push('realm=\"' + this.realm + '\"');\n        authParams.push('nonce=\"' + this.nonce + '\"');\n        authParams.push('uri=\"' + this.uri + '\"');\n        authParams.push('response=\"' + this.response + '\"');\n        if (this.opaque) {\n            authParams.push('opaque=\"' + this.opaque + '\"');\n        }\n        if (this.qop) {\n            authParams.push(\"qop=\" + this.qop);\n            authParams.push('cnonce=\"' + this.cnonce + '\"');\n            authParams.push(\"nc=\" + this.ncHex);\n        }\n        return \"Digest \" + authParams.join(\", \");\n    }\n    /**\n     * Generate the 'nc' value as required by Digest in this.ncHex by reading this.nc.\n     */\n    updateNcHex() {\n        const hex = Number(this.nc).toString(16);\n        this.ncHex = \"00000000\".substr(0, 8 - hex.length) + hex;\n    }\n    /**\n     * Generate Digest 'response' value.\n     */\n    calculateResponse(body) {\n        let ha1, ha2;\n        // HA1 = MD5(A1) = MD5(username:realm:password)\n        ha1 = this.ha1;\n        if (ha1 === \"\" || ha1 === undefined) {\n            ha1 = MD5(this.username + \":\" + this.realm + \":\" + this.password);\n        }\n        if (this.qop === \"auth\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)`\n            this.response = MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth:\" + ha2);\n        }\n        else if (this.qop === \"auth-int\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI:MD5(entityBody))\n            ha2 = MD5(this.method + \":\" + this.uri + \":\" + MD5(body ? body : \"\"));\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)\n            this.response = MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth-int:\" + ha2);\n        }\n        else if (this.qop === undefined) {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:HA2)\n            this.response = MD5(ha1 + \":\" + this.nonce + \":\" + ha2);\n        }\n    }\n}\n","/* eslint-disable */\n//\n// Scoped from: https://github.com/cotag/ts-md5\n//\n/*\n\nTypeScript Md5\n==============\n\nBased on work by\n* Joseph Myers: http://www.myersdaily.org/joseph/javascript/md5-text.html\n* André Cruz: https://github.com/satazor/SparkMD5\n* Raymond Hill: https://github.com/gorhill/yamd5.js\n\nEffectively a TypeScrypt re-write of Raymond Hill JS Library\n\nThe MIT License (MIT)\n\nCopyright (C) 2014 Raymond Hill\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in\nall copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\nTHE SOFTWARE.\n\n\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n                    Version 2, December 2004\n\n Copyright (C) 2015 André Cruz <amdfcruz@gmail.com>\n\n Everyone is permitted to copy and distribute verbatim or modified\n copies of this license document, and changing it is allowed as long\n as the name is changed.\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION\n\n  0. You just DO WHAT THE FUCK YOU WANT TO.\n\n\n*/\nexport class Md5 {\n    constructor() {\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state = new Int32Array(4);\n        this._buffer = new ArrayBuffer(68);\n        this._buffer8 = new Uint8Array(this._buffer, 0, 68);\n        this._buffer32 = new Uint32Array(this._buffer, 0, 17);\n        this.start();\n    }\n    static hashStr(str, raw = false) {\n        return this.onePassHasher\n            .start()\n            .appendStr(str)\n            .end(raw);\n    }\n    static hashAsciiStr(str, raw = false) {\n        return this.onePassHasher\n            .start()\n            .appendAsciiStr(str)\n            .end(raw);\n    }\n    static _hex(x) {\n        const hc = Md5.hexChars;\n        const ho = Md5.hexOut;\n        let n;\n        let offset;\n        let j;\n        let i;\n        for (i = 0; i < 4; i += 1) {\n            offset = i * 8;\n            n = x[i];\n            for (j = 0; j < 8; j += 2) {\n                ho[offset + 1 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n                ho[offset + 0 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n            }\n        }\n        return ho.join('');\n    }\n    static _md5cycle(x, k) {\n        let a = x[0];\n        let b = x[1];\n        let c = x[2];\n        let d = x[3];\n        // ff()\n        a += (b & c | ~b & d) + k[0] - 680876936 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[1] - 389564586 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[2] + 606105819 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[3] - 1044525330 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[4] - 176418897 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[5] + 1200080426 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[6] - 1473231341 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[7] - 45705983 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[8] + 1770035416 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[9] - 1958414417 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[10] - 42063 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[11] - 1990404162 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[12] + 1804603682 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[13] - 40341101 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[14] - 1502002290 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[15] + 1236535329 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        // gg()\n        a += (b & d | c & ~d) + k[1] - 165796510 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[6] - 1069501632 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[11] + 643717713 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[0] - 373897302 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[5] - 701558691 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[10] + 38016083 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[15] - 660478335 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[4] - 405537848 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[9] + 568446438 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[14] - 1019803690 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[3] - 187363961 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[8] + 1163531501 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[13] - 1444681467 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[2] - 51403784 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[7] + 1735328473 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[12] - 1926607734 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        // hh()\n        a += (b ^ c ^ d) + k[5] - 378558 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[8] - 2022574463 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[11] + 1839030562 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[14] - 35309556 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[1] - 1530992060 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[4] + 1272893353 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[7] - 155497632 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[10] - 1094730640 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[13] + 681279174 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[0] - 358537222 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[3] - 722521979 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[6] + 76029189 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[9] - 640364487 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[12] - 421815835 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[15] + 530742520 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[2] - 995338651 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        // ii()\n        a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        x[0] = a + x[0] | 0;\n        x[1] = b + x[1] | 0;\n        x[2] = c + x[2] | 0;\n        x[3] = d + x[3] | 0;\n    }\n    start() {\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state.set(Md5.stateIdentity);\n        return this;\n    }\n    // Char to code point to to array conversion:\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt\n    // #Example.3A_Fixing_charCodeAt_to_handle_non-Basic-Multilingual-Plane_characters_if_their_presence_earlier_in_the_string_is_unknown\n    appendStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let code;\n        let i;\n        for (i = 0; i < str.length; i += 1) {\n            code = str.charCodeAt(i);\n            if (code < 128) {\n                buf8[bufLen++] = code;\n            }\n            else if (code < 0x800) {\n                buf8[bufLen++] = (code >>> 6) + 0xC0;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            }\n            else if (code < 0xD800 || code > 0xDBFF) {\n                buf8[bufLen++] = (code >>> 12) + 0xE0;\n                buf8[bufLen++] = (code >>> 6 & 0x3F) | 0x80;\n                buf8[bufLen++] = (code & 0x3F) | 0x80;\n            }\n            else {\n                code = ((code - 0xD800) * 0x400) + (str.charCodeAt(++i) - 0xDC00) + 0x10000;\n                if (code > 0x10FFFF) {\n                    throw new Error('Unicode standard supports code points up to U+10FFFF');\n                }\n                buf8[bufLen++] = (code >>> 18) + 0xF0;\n                buf8[bufLen++] = (code >>> 12 & 0x3F) | 0x80;\n                buf8[bufLen++] = (code >>> 6 & 0x3F) | 0x80;\n                buf8[bufLen++] = (code & 0x3F) | 0x80;\n            }\n            if (bufLen >= 64) {\n                this._dataLength += 64;\n                Md5._md5cycle(this._state, buf32);\n                bufLen -= 64;\n                buf32[0] = buf32[16];\n            }\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendAsciiStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for (;;) {\n            i = Math.min(str.length - j, 64 - bufLen);\n            while (i--) {\n                buf8[bufLen++] = str.charCodeAt(j++);\n            }\n            if (bufLen < 64) {\n                break;\n            }\n            this._dataLength += 64;\n            Md5._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendByteArray(input) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for (;;) {\n            i = Math.min(input.length - j, 64 - bufLen);\n            while (i--) {\n                buf8[bufLen++] = input[j++];\n            }\n            if (bufLen < 64) {\n                break;\n            }\n            this._dataLength += 64;\n            Md5._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    getState() {\n        const self = this;\n        const s = self._state;\n        return {\n            buffer: String.fromCharCode.apply(null, self._buffer8),\n            buflen: self._bufferLength,\n            length: self._dataLength,\n            state: [s[0], s[1], s[2], s[3]]\n        };\n    }\n    setState(state) {\n        const buf = state.buffer;\n        const x = state.state;\n        const s = this._state;\n        let i;\n        this._dataLength = state.length;\n        this._bufferLength = state.buflen;\n        s[0] = x[0];\n        s[1] = x[1];\n        s[2] = x[2];\n        s[3] = x[3];\n        for (i = 0; i < buf.length; i += 1) {\n            this._buffer8[i] = buf.charCodeAt(i);\n        }\n    }\n    end(raw = false) {\n        const bufLen = this._bufferLength;\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        const i = (bufLen >> 2) + 1;\n        let dataBitsLen;\n        this._dataLength += bufLen;\n        buf8[bufLen] = 0x80;\n        buf8[bufLen + 1] = buf8[bufLen + 2] = buf8[bufLen + 3] = 0;\n        buf32.set(Md5.buffer32Identity.subarray(i), i);\n        if (bufLen > 55) {\n            Md5._md5cycle(this._state, buf32);\n            buf32.set(Md5.buffer32Identity);\n        }\n        // Do the final computation based on the tail and length\n        // Beware that the final length may not fit in 32 bits so we take care of that\n        dataBitsLen = this._dataLength * 8;\n        if (dataBitsLen <= 0xFFFFFFFF) {\n            buf32[14] = dataBitsLen;\n        }\n        else {\n            const matches = dataBitsLen.toString(16).match(/(.*?)(.{0,8})$/);\n            if (matches === null) {\n                return;\n            }\n            const lo = parseInt(matches[2], 16);\n            const hi = parseInt(matches[1], 16) || 0;\n            buf32[14] = lo;\n            buf32[15] = hi;\n        }\n        Md5._md5cycle(this._state, buf32);\n        return raw ? this._state : Md5._hex(this._state);\n    }\n}\n// Private Static Variables\nMd5.stateIdentity = new Int32Array([1732584193, -271733879, -1732584194, 271733878]);\nMd5.buffer32Identity = new Int32Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);\nMd5.hexChars = '0123456789abcdef';\nMd5.hexOut = [];\n// Permanent instance is to use for one-call hashing\nMd5.onePassHasher = new Md5();\nif (Md5.hashStr('hello') !== '5d41402abc4b2a76b9719d911017c592') {\n    console.error('Md5 self test failed.');\n}\n","import { Levels } from \"./levels.js\";\nimport { Logger } from \"./logger.js\";\n/**\n * Logger.\n * @public\n */\nexport class LoggerFactory {\n    constructor() {\n        this.builtinEnabled = true;\n        this._level = Levels.log;\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.loggers = {};\n        this.logger = this.getLogger(\"sip:loggerfactory\");\n    }\n    get level() {\n        return this._level;\n    }\n    set level(newLevel) {\n        if (newLevel >= 0 && newLevel <= 3) {\n            this._level = newLevel;\n        }\n        else if (newLevel > 3) {\n            this._level = 3;\n            // eslint-disable-next-line no-prototype-builtins\n        }\n        else if (Levels.hasOwnProperty(newLevel)) {\n            this._level = newLevel;\n        }\n        else {\n            this.logger.error(\"invalid 'level' parameter value: \" + JSON.stringify(newLevel));\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    get connector() {\n        return this._connector;\n    }\n    set connector(value) {\n        if (!value) {\n            this._connector = undefined;\n        }\n        else if (typeof value === \"function\") {\n            this._connector = value;\n        }\n        else {\n            this.logger.error(\"invalid 'connector' parameter value: \" + JSON.stringify(value));\n        }\n    }\n    getLogger(category, label) {\n        if (label && this.level === 3) {\n            return new Logger(this, category, label);\n        }\n        else if (this.loggers[category]) {\n            return this.loggers[category];\n        }\n        else {\n            const logger = new Logger(this, category);\n            this.loggers[category] = logger;\n            return logger;\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    genericLog(levelToLog, category, label, content) {\n        if (this.level >= levelToLog) {\n            if (this.builtinEnabled) {\n                this.print(levelToLog, category, label, content);\n            }\n        }\n        if (this.connector) {\n            this.connector(Levels[levelToLog], category, label, content);\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    print(levelToLog, category, label, content) {\n        if (typeof content === \"string\") {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const prefix = [new Date(), category];\n            if (label) {\n                prefix.push(label);\n            }\n            content = prefix.concat(content).join(\" | \");\n        }\n        switch (levelToLog) {\n            case Levels.error:\n                // eslint-disable-next-line no-console\n                console.error(content);\n                break;\n            case Levels.warn:\n                // eslint-disable-next-line no-console\n                console.warn(content);\n                break;\n            case Levels.log:\n                // eslint-disable-next-line no-console\n                console.log(content);\n                break;\n            case Levels.debug:\n                // eslint-disable-next-line no-console\n                console.debug(content);\n                break;\n            default:\n                break;\n        }\n    }\n}\n","import { Levels } from \"./levels.js\";\n/**\n * Logger.\n * @public\n */\nexport class Logger {\n    constructor(logger, category, label) {\n        this.logger = logger;\n        this.category = category;\n        this.label = label;\n    }\n    error(content) {\n        this.genericLog(Levels.error, content);\n    }\n    warn(content) {\n        this.genericLog(Levels.warn, content);\n    }\n    log(content) {\n        this.genericLog(Levels.log, content);\n    }\n    debug(content) {\n        this.genericLog(Levels.debug, content);\n    }\n    genericLog(level, content) {\n        this.logger.genericLog(level, this.category, this.label, content);\n    }\n    get level() {\n        return this.logger.level;\n    }\n    set level(newLevel) {\n        this.logger.level = newLevel;\n    }\n}\n","/* eslint-disable no-inner-declarations */\n/* eslint-disable @typescript-eslint/no-namespace */\nimport { Grammar } from \"../../grammar/grammar.js\";\nimport { IncomingRequestMessage } from \"./incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"./incoming-response-message.js\";\n/**\n * Extract and parse every header of a SIP message.\n * @internal\n */\nexport var Parser;\n(function (Parser) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function getHeader(data, headerStart) {\n        // 'start' position of the header.\n        let start = headerStart;\n        // 'end' position of the header.\n        let end = 0;\n        // 'partial end' position of the header.\n        let partialEnd = 0;\n        // End of message.\n        if (data.substring(start, start + 2).match(/(^\\r\\n)/)) {\n            return -2;\n        }\n        while (end === 0) {\n            // Partial End of Header.\n            partialEnd = data.indexOf(\"\\r\\n\", start);\n            // 'indexOf' returns -1 if the value to be found never occurs.\n            if (partialEnd === -1) {\n                return partialEnd;\n            }\n            if (!data.substring(partialEnd + 2, partialEnd + 4).match(/(^\\r\\n)/) &&\n                data.charAt(partialEnd + 2).match(/(^\\s+)/)) {\n                // Not the end of the message. Continue from the next position.\n                start = partialEnd + 2;\n            }\n            else {\n                end = partialEnd;\n            }\n        }\n        return end;\n    }\n    Parser.getHeader = getHeader;\n    function parseHeader(message, \n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    data, headerStart, headerEnd) {\n        const hcolonIndex = data.indexOf(\":\", headerStart);\n        const headerName = data.substring(headerStart, hcolonIndex).trim();\n        const headerValue = data.substring(hcolonIndex + 1, headerEnd).trim();\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let parsed;\n        // If header-field is well-known, parse it.\n        switch (headerName.toLowerCase()) {\n            case \"via\":\n            case \"v\":\n                message.addHeader(\"via\", headerValue);\n                if (message.getHeaders(\"via\").length === 1) {\n                    parsed = message.parseHeader(\"Via\");\n                    if (parsed) {\n                        message.via = parsed;\n                        message.viaBranch = parsed.branch;\n                    }\n                }\n                else {\n                    parsed = 0;\n                }\n                break;\n            case \"from\":\n            case \"f\":\n                message.setHeader(\"from\", headerValue);\n                parsed = message.parseHeader(\"from\");\n                if (parsed) {\n                    message.from = parsed;\n                    message.fromTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"to\":\n            case \"t\":\n                message.setHeader(\"to\", headerValue);\n                parsed = message.parseHeader(\"to\");\n                if (parsed) {\n                    message.to = parsed;\n                    message.toTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"record-route\":\n                parsed = Grammar.parse(headerValue, \"Record_Route\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header) => {\n                    message.addHeader(\"record-route\", headerValue.substring(header.position, header.offset));\n                    message.headers[\"Record-Route\"][message.getHeaders(\"record-route\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"call-id\":\n            case \"i\":\n                message.setHeader(\"call-id\", headerValue);\n                parsed = message.parseHeader(\"call-id\");\n                if (parsed) {\n                    message.callId = headerValue;\n                }\n                break;\n            case \"contact\":\n            case \"m\":\n                parsed = Grammar.parse(headerValue, \"Contact\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header) => {\n                    message.addHeader(\"contact\", headerValue.substring(header.position, header.offset));\n                    message.headers.Contact[message.getHeaders(\"contact\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"content-length\":\n            case \"l\":\n                message.setHeader(\"content-length\", headerValue);\n                parsed = message.parseHeader(\"content-length\");\n                break;\n            case \"content-type\":\n            case \"c\":\n                message.setHeader(\"content-type\", headerValue);\n                parsed = message.parseHeader(\"content-type\");\n                break;\n            case \"cseq\":\n                message.setHeader(\"cseq\", headerValue);\n                parsed = message.parseHeader(\"cseq\");\n                if (parsed) {\n                    message.cseq = parsed.value;\n                }\n                if (message instanceof IncomingResponseMessage) {\n                    message.method = parsed.method;\n                }\n                break;\n            case \"max-forwards\":\n                message.setHeader(\"max-forwards\", headerValue);\n                parsed = message.parseHeader(\"max-forwards\");\n                break;\n            case \"www-authenticate\":\n                message.setHeader(\"www-authenticate\", headerValue);\n                parsed = message.parseHeader(\"www-authenticate\");\n                break;\n            case \"proxy-authenticate\":\n                message.setHeader(\"proxy-authenticate\", headerValue);\n                parsed = message.parseHeader(\"proxy-authenticate\");\n                break;\n            case \"refer-to\":\n            case \"r\":\n                message.setHeader(\"refer-to\", headerValue);\n                parsed = message.parseHeader(\"refer-to\");\n                if (parsed) {\n                    message.referTo = parsed;\n                }\n                break;\n            default:\n                // Do not parse this header.\n                message.addHeader(headerName.toLowerCase(), headerValue);\n                parsed = 0;\n        }\n        if (parsed === undefined) {\n            return {\n                error: \"error parsing header '\" + headerName + \"'\"\n            };\n        }\n        else {\n            return true;\n        }\n    }\n    Parser.parseHeader = parseHeader;\n    function parseMessage(data, logger) {\n        let headerStart = 0;\n        let headerEnd = data.indexOf(\"\\r\\n\");\n        if (headerEnd === -1) {\n            logger.warn(\"no CRLF found, not a SIP message, discarded\");\n            return;\n        }\n        // Parse first line. Check if it is a Request or a Reply.\n        const firstLine = data.substring(0, headerEnd);\n        const parsed = Grammar.parse(firstLine, \"Request_Response\");\n        let message;\n        if (parsed === -1) {\n            logger.warn('error parsing first line of SIP message: \"' + firstLine + '\"');\n            return;\n        }\n        else if (!parsed.status_code) {\n            message = new IncomingRequestMessage();\n            message.method = parsed.method;\n            message.ruri = parsed.uri;\n        }\n        else {\n            message = new IncomingResponseMessage();\n            message.statusCode = parsed.status_code;\n            message.reasonPhrase = parsed.reason_phrase;\n        }\n        message.data = data;\n        headerStart = headerEnd + 2;\n        // Loop over every line in data. Detect the end of each header and parse\n        // it or simply add to the headers collection.\n        let bodyStart;\n        // eslint-disable-next-line no-constant-condition\n        while (true) {\n            headerEnd = getHeader(data, headerStart);\n            // The SIP message has normally finished.\n            if (headerEnd === -2) {\n                bodyStart = headerStart + 2;\n                break;\n            }\n            else if (headerEnd === -1) {\n                // data.indexOf returned -1 due to a malformed message.\n                logger.error(\"malformed message\");\n                return;\n            }\n            const parsedHeader = parseHeader(message, data, headerStart, headerEnd);\n            if (parsedHeader && parsedHeader !== true) {\n                logger.error(parsedHeader.error);\n                return;\n            }\n            headerStart = headerEnd + 2;\n        }\n        // RFC3261 18.3.\n        // If there are additional bytes in the transport packet\n        // beyond the end of the body, they MUST be discarded.\n        if (message.hasHeader(\"content-length\")) {\n            message.body = data.substr(bodyStart, Number(message.getHeader(\"content-length\")));\n        }\n        else {\n            message.body = data.substring(bodyStart);\n        }\n        return message;\n    }\n    Parser.parseMessage = parseMessage;\n})(Parser = Parser || (Parser = {}));\n","import { C } from \"../messages/methods/constants.js\";\nimport { OutgoingRequestMessage } from \"../messages/outgoing-request-message.js\";\nimport { constructOutgoingResponse } from \"../messages/outgoing-response.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\nimport { InviteUserAgentClient } from \"../user-agents/invite-user-agent-client.js\";\nimport { InviteUserAgentServer } from \"../user-agents/invite-user-agent-server.js\";\nimport { MessageUserAgentClient } from \"../user-agents/message-user-agent-client.js\";\nimport { MessageUserAgentServer } from \"../user-agents/message-user-agent-server.js\";\nimport { NotifyUserAgentServer } from \"../user-agents/notify-user-agent-server.js\";\nimport { PublishUserAgentClient } from \"../user-agents/publish-user-agent-client.js\";\nimport { ReferUserAgentServer } from \"../user-agents/refer-user-agent-server.js\";\nimport { RegisterUserAgentClient } from \"../user-agents/register-user-agent-client.js\";\nimport { RegisterUserAgentServer } from \"../user-agents/register-user-agent-server.js\";\nimport { SubscribeUserAgentClient } from \"../user-agents/subscribe-user-agent-client.js\";\nimport { SubscribeUserAgentServer } from \"../user-agents/subscribe-user-agent-server.js\";\nimport { UserAgentClient } from \"../user-agents/user-agent-client.js\";\nimport { AllowedMethods } from \"./allowed-methods.js\";\n/**\n * This is ported from UA.C.ACCEPTED_BODY_TYPES.\n * FIXME: TODO: Should be configurable/variable.\n */\nconst acceptedBodyTypes = [\"application/sdp\", \"application/dtmf-relay\"];\n/**\n * User Agent Core.\n * @remarks\n * Core designates the functions specific to a particular type\n * of SIP entity, i.e., specific to either a stateful or stateless\n * proxy, a user agent or registrar.  All cores, except those for\n * the stateless proxy, are transaction users.\n * https://tools.ietf.org/html/rfc3261#section-6\n *\n * UAC Core: The set of processing functions required of a UAC that\n * reside above the transaction and transport layers.\n * https://tools.ietf.org/html/rfc3261#section-6\n *\n * UAS Core: The set of processing functions required at a UAS that\n * resides above the transaction and transport layers.\n * https://tools.ietf.org/html/rfc3261#section-6\n * @public\n */\nexport class UserAgentCore {\n    /**\n     * Constructor.\n     * @param configuration - Configuration.\n     * @param delegate - Delegate.\n     */\n    constructor(configuration, delegate = {}) {\n        /** UACs. */\n        this.userAgentClients = new Map();\n        /** UASs. */\n        this.userAgentServers = new Map();\n        this.configuration = configuration;\n        this.delegate = delegate;\n        this.dialogs = new Map();\n        this.subscribers = new Map();\n        this.logger = configuration.loggerFactory.getLogger(\"sip.user-agent-core\");\n    }\n    /** Destructor. */\n    dispose() {\n        this.reset();\n    }\n    /** Reset. */\n    reset() {\n        this.dialogs.forEach((dialog) => dialog.dispose());\n        this.dialogs.clear();\n        this.subscribers.forEach((subscriber) => subscriber.dispose());\n        this.subscribers.clear();\n        this.userAgentClients.forEach((uac) => uac.dispose());\n        this.userAgentClients.clear();\n        this.userAgentServers.forEach((uac) => uac.dispose());\n        this.userAgentServers.clear();\n    }\n    /** Logger factory. */\n    get loggerFactory() {\n        return this.configuration.loggerFactory;\n    }\n    /** Transport. */\n    get transport() {\n        const transport = this.configuration.transportAccessor();\n        if (!transport) {\n            throw new Error(\"Transport undefined.\");\n        }\n        return transport;\n    }\n    /**\n     * Send INVITE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    invite(request, delegate) {\n        return new InviteUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send MESSAGE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    message(request, delegate) {\n        return new MessageUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send PUBLISH.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    publish(request, delegate) {\n        return new PublishUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send REGISTER.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    register(request, delegate) {\n        return new RegisterUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send SUBSCRIBE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    subscribe(request, delegate) {\n        return new SubscribeUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send a request.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    request(request, delegate) {\n        return new UserAgentClient(NonInviteClientTransaction, this, request, delegate);\n    }\n    /**\n     * Outgoing request message factory function.\n     * @param method - Method.\n     * @param requestURI - Request-URI.\n     * @param fromURI - From URI.\n     * @param toURI - To URI.\n     * @param options - Request options.\n     * @param extraHeaders - Extra headers to add.\n     * @param body - Message body.\n     */\n    makeOutgoingRequestMessage(method, requestURI, fromURI, toURI, options, extraHeaders, body) {\n        // default values from user agent configuration\n        const callIdPrefix = this.configuration.sipjsId;\n        const fromDisplayName = this.configuration.displayName;\n        const forceRport = this.configuration.viaForceRport;\n        const hackViaTcp = this.configuration.hackViaTcp;\n        const optionTags = this.configuration.supportedOptionTags.slice();\n        if (method === C.REGISTER) {\n            optionTags.push(\"path\", \"gruu\");\n        }\n        if (method === C.INVITE && (this.configuration.contact.pubGruu || this.configuration.contact.tempGruu)) {\n            optionTags.push(\"gruu\");\n        }\n        const routeSet = this.configuration.routeSet;\n        const userAgentString = this.configuration.userAgentHeaderFieldValue;\n        const viaHost = this.configuration.viaHost;\n        const defaultOptions = {\n            callIdPrefix,\n            forceRport,\n            fromDisplayName,\n            hackViaTcp,\n            optionTags,\n            routeSet,\n            userAgentString,\n            viaHost\n        };\n        // merge provided options with default options\n        const requestOptions = Object.assign(Object.assign({}, defaultOptions), options);\n        return new OutgoingRequestMessage(method, requestURI, fromURI, toURI, requestOptions, extraHeaders, body);\n    }\n    /**\n     * Handle an incoming request message from the transport.\n     * @param message - Incoming request message from transport layer.\n     */\n    receiveIncomingRequestFromTransport(message) {\n        this.receiveRequestFromTransport(message);\n    }\n    /**\n     * Handle an incoming response message from the transport.\n     * @param message - Incoming response message from transport layer.\n     */\n    receiveIncomingResponseFromTransport(message) {\n        this.receiveResponseFromTransport(message);\n    }\n    /**\n     * A stateless UAS is a UAS that does not maintain transaction state.\n     * It replies to requests normally, but discards any state that would\n     * ordinarily be retained by a UAS after a response has been sent.  If a\n     * stateless UAS receives a retransmission of a request, it regenerates\n     * the response and re-sends it, just as if it were replying to the first\n     * instance of the request. A UAS cannot be stateless unless the request\n     * processing for that method would always result in the same response\n     * if the requests are identical. This rules out stateless registrars,\n     * for example.  Stateless UASs do not use a transaction layer; they\n     * receive requests directly from the transport layer and send responses\n     * directly to the transport layer.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.7\n     * @param message - Incoming request message to reply to.\n     * @param statusCode - Status code to reply with.\n     */\n    replyStateless(message, options) {\n        const userAgent = this.configuration.userAgentHeaderFieldValue;\n        const supported = this.configuration.supportedOptionTagsResponse;\n        options = Object.assign(Object.assign({}, options), { userAgent, supported });\n        const response = constructOutgoingResponse(message, options);\n        this.transport.send(response.message).catch((error) => {\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful...\n            if (error instanceof Error) {\n                this.logger.error(error.message);\n            }\n            this.logger.error(`Transport error occurred sending stateless reply to ${message.method} request.`);\n            // TODO: Currently there is no hook to provide notification that a transport error occurred\n            // and throwing would result in an uncaught error (in promise), so we silently eat the error.\n            // Furthermore, silently eating stateless reply transport errors is arguably what we want to do here.\n        });\n        return response;\n    }\n    /**\n     * In Section 18.2.1, replace the last paragraph with:\n     *\n     * Next, the server transport attempts to match the request to a\n     * server transaction.  It does so using the matching rules described\n     * in Section 17.2.3.  If a matching server transaction is found, the\n     * request is passed to that transaction for processing.  If no match\n     * is found, the request is passed to the core, which may decide to\n     * construct a new server transaction for that request.\n     * https://tools.ietf.org/html/rfc6026#section-8.10\n     * @param message - Incoming request message from transport layer.\n     */\n    receiveRequestFromTransport(message) {\n        // When a request is received from the network by the server, it has to\n        // be matched to an existing transaction.  This is accomplished in the\n        // following manner.\n        //\n        // The branch parameter in the topmost Via header field of the request\n        // is examined.  If it is present and begins with the magic cookie\n        // \"z9hG4bK\", the request was generated by a client transaction\n        // compliant to this specification.  Therefore, the branch parameter\n        // will be unique across all transactions sent by that client.  The\n        // request matches a transaction if:\n        //\n        //    1. the branch parameter in the request is equal to the one in the\n        //       top Via header field of the request that created the\n        //       transaction, and\n        //\n        //    2. the sent-by value in the top Via of the request is equal to the\n        //       one in the request that created the transaction, and\n        //\n        //    3. the method of the request matches the one that created the\n        //       transaction, except for ACK, where the method of the request\n        //       that created the transaction is INVITE.\n        //\n        // This matching rule applies to both INVITE and non-INVITE transactions\n        // alike.\n        //\n        //    The sent-by value is used as part of the matching process because\n        //    there could be accidental or malicious duplication of branch\n        //    parameters from different clients.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.3\n        const transactionId = message.viaBranch; // FIXME: Currently only using rule 1...\n        const uas = this.userAgentServers.get(transactionId);\n        // When receiving an ACK that matches an existing INVITE server\n        // transaction and that does not contain a branch parameter containing\n        // the magic cookie defined in RFC 3261, the matching transaction MUST\n        // be checked to see if it is in the \"Accepted\" state.  If it is, then\n        // the ACK must be passed directly to the transaction user instead of\n        // being absorbed by the transaction state machine.  This is necessary\n        // as requests from RFC 2543 clients will not include a unique branch\n        // parameter, and the mechanisms for calculating the transaction ID from\n        // such a request will be the same for both INVITE and ACKs.\n        // https://tools.ietf.org/html/rfc6026#section-6\n        // Any ACKs received from the network while in the \"Accepted\" state MUST be\n        // passed directly to the TU and not absorbed.\n        // https://tools.ietf.org/html/rfc6026#section-7.1\n        if (message.method === C.ACK) {\n            if (uas && uas.transaction.state === TransactionState.Accepted) {\n                if (uas instanceof InviteUserAgentServer) {\n                    // These are ACKs matching an INVITE server transaction.\n                    // These should never happen with RFC 3261 compliant user agents\n                    // (would be a broken ACK to negative final response or something)\n                    // but is apparently how RFC 2543 user agents do things.\n                    // We are not currently supporting this case.\n                    // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n                    this.logger.warn(`Discarding out of dialog ACK after 2xx response sent on transaction ${transactionId}.`);\n                    return;\n                }\n            }\n        }\n        // The CANCEL method requests that the TU at the server side cancel a\n        // pending transaction.  The TU determines the transaction to be\n        // cancelled by taking the CANCEL request, and then assuming that the\n        // request method is anything but CANCEL or ACK and applying the\n        // transaction matching procedures of Section 17.2.3.  The matching\n        // transaction is the one to be cancelled.\n        // https://tools.ietf.org/html/rfc3261#section-9.2\n        if (message.method === C.CANCEL) {\n            if (uas) {\n                // Regardless of the method of the original request, as long as the\n                // CANCEL matched an existing transaction, the UAS answers the CANCEL\n                // request itself with a 200 (OK) response.\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                this.replyStateless(message, { statusCode: 200 });\n                // If the transaction for the original request still exists, the behavior\n                // of the UAS on receiving a CANCEL request depends on whether it has already\n                // sent a final response for the original request. If it has, the CANCEL\n                // request has no effect on the processing of the original request, no\n                // effect on any session state, and no effect on the responses generated\n                // for the original request. If the UAS has not issued a final response\n                // for the original request, its behavior depends on the method of the\n                // original request. If the original request was an INVITE, the UAS\n                // SHOULD immediately respond to the INVITE with a 487 (Request\n                // Terminated).\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                if (uas.transaction instanceof InviteServerTransaction &&\n                    uas.transaction.state === TransactionState.Proceeding) {\n                    if (uas instanceof InviteUserAgentServer) {\n                        uas.receiveCancel(message);\n                    }\n                    // A CANCEL request has no impact on the processing of\n                    // transactions with any other method defined in this specification.\n                    // https://tools.ietf.org/html/rfc3261#section-9.2\n                }\n            }\n            else {\n                // If the UAS did not find a matching transaction for the CANCEL\n                // according to the procedure above, it SHOULD respond to the CANCEL\n                // with a 481 (Call Leg/Transaction Does Not Exist).\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                this.replyStateless(message, { statusCode: 481 });\n            }\n            return;\n        }\n        // If a matching server transaction is found, the request is passed to that\n        // transaction for processing.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        if (uas) {\n            uas.transaction.receiveRequest(message);\n            return;\n        }\n        // If no match is found, the request is passed to the core, which may decide to\n        // construct a new server transaction for that request.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        this.receiveRequest(message);\n        return;\n    }\n    /**\n     * UAC and UAS procedures depend strongly on two factors.  First, based\n     * on whether the request or response is inside or outside of a dialog,\n     * and second, based on the method of a request.  Dialogs are discussed\n     * thoroughly in Section 12; they represent a peer-to-peer relationship\n     * between user agents and are established by specific SIP methods, such\n     * as INVITE.\n     * @param message - Incoming request message.\n     */\n    receiveRequest(message) {\n        // 8.2 UAS Behavior\n        // UASs SHOULD process the requests in the order of the steps that\n        // follow in this section (that is, starting with authentication, then\n        // inspecting the method, the header fields, and so on throughout the\n        // remainder of this section).\n        // https://tools.ietf.org/html/rfc3261#section-8.2\n        // 8.2.1 Method Inspection\n        // Once a request is authenticated (or authentication is skipped), the\n        // UAS MUST inspect the method of the request.  If the UAS recognizes\n        // but does not support the method of a request, it MUST generate a 405\n        // (Method Not Allowed) response.  Procedures for generating responses\n        // are described in Section 8.2.6.  The UAS MUST also add an Allow\n        // header field to the 405 (Method Not Allowed) response.  The Allow\n        // header field MUST list the set of methods supported by the UAS\n        // generating the message.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.1\n        if (!AllowedMethods.includes(message.method)) {\n            const allowHeader = \"Allow: \" + AllowedMethods.toString();\n            this.replyStateless(message, {\n                statusCode: 405,\n                extraHeaders: [allowHeader]\n            });\n            return;\n        }\n        // 8.2.2 Header Inspection\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2\n        if (!message.ruri) {\n            // FIXME: A request message should always have an ruri\n            throw new Error(\"Request-URI undefined.\");\n        }\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI uses a scheme not supported by the UAS, it SHOULD\n        // reject the request with a 416 (Unsupported URI Scheme) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.ruri.scheme !== \"sip\") {\n            this.replyStateless(message, { statusCode: 416 });\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI does not identify an address that the\n        // UAS is willing to accept requests for, it SHOULD reject\n        // the request with a 404 (Not Found) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        const ruri = message.ruri;\n        const ruriMatches = (uri) => {\n            return !!uri && uri.user === ruri.user;\n        };\n        if (!ruriMatches(this.configuration.aor) &&\n            !(ruriMatches(this.configuration.contact.uri) ||\n                ruriMatches(this.configuration.contact.pubGruu) ||\n                ruriMatches(this.configuration.contact.tempGruu))) {\n            this.logger.warn(\"Request-URI does not point to us.\");\n            if (message.method !== C.ACK) {\n                this.replyStateless(message, { statusCode: 404 });\n            }\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // Other potential sources of received Request-URIs include\n        // the Contact header fields of requests and responses sent by the UA\n        // that establish or refresh dialogs.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.method === C.INVITE) {\n            if (!message.hasHeader(\"Contact\")) {\n                this.replyStateless(message, {\n                    statusCode: 400,\n                    reasonPhrase: \"Missing Contact Header\"\n                });\n                return;\n            }\n        }\n        // 8.2.2.2 Merged Requests\n        // If the request has no tag in the To header field, the UAS core MUST\n        // check the request against ongoing transactions.  If the From tag,\n        // Call-ID, and CSeq exactly match those associated with an ongoing\n        // transaction, but the request does not match that transaction (based\n        // on the matching rules in Section 17.2.3), the UAS core SHOULD\n        // generate a 482 (Loop Detected) response and pass it to the server\n        // transaction.\n        //\n        //    The same request has arrived at the UAS more than once, following\n        //    different paths, most likely due to forking.  The UAS processes\n        //    the first such request received and responds with a 482 (Loop\n        //    Detected) to the rest of them.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.2\n        if (!message.toTag) {\n            const transactionId = message.viaBranch;\n            if (!this.userAgentServers.has(transactionId)) {\n                const mergedRequest = Array.from(this.userAgentServers.values()).some((uas) => uas.transaction.request.fromTag === message.fromTag &&\n                    uas.transaction.request.callId === message.callId &&\n                    uas.transaction.request.cseq === message.cseq);\n                if (mergedRequest) {\n                    this.replyStateless(message, { statusCode: 482 });\n                    return;\n                }\n            }\n        }\n        // 8.2.2.3 Require\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.3\n        // TODO\n        // 8.2.3 Content Processing\n        // https://tools.ietf.org/html/rfc3261#section-8.2.3\n        // TODO\n        // 8.2.4 Applying Extensions\n        // https://tools.ietf.org/html/rfc3261#section-8.2.4\n        // TODO\n        // 8.2.5 Processing the Request\n        // Assuming all of the checks in the previous subsections are passed,\n        // the UAS processing becomes method-specific.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.5\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // In that case, the UAS first applies the same processing rules for\n        // requests outside of a dialog, discussed in Section 8.2.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (message.toTag) {\n            this.receiveInsideDialogRequest(message);\n        }\n        else {\n            this.receiveOutsideDialogRequest(message);\n        }\n        return;\n    }\n    /**\n     * Once a dialog has been established between two UAs, either of them\n     * MAY initiate new transactions as needed within the dialog.  The UA\n     * sending the request will take the UAC role for the transaction.  The\n     * UA receiving the request will take the UAS role.  Note that these may\n     * be different roles than the UAs held during the transaction that\n     * established the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2\n     * @param message - Incoming request message.\n     */\n    receiveInsideDialogRequest(message) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (message.method === C.NOTIFY) {\n            const event = message.parseHeader(\"Event\");\n            if (!event || !event.event) {\n                this.replyStateless(message, { statusCode: 489 });\n                return;\n            }\n            // FIXME: Subscriber id should also matching on event id.\n            const subscriberId = message.callId + message.toTag + event.event;\n            const subscriber = this.subscribers.get(subscriberId);\n            if (subscriber) {\n                const uas = new NotifyUserAgentServer(this, message);\n                subscriber.onNotify(uas);\n                return;\n            }\n        }\n        // Requests sent within a dialog, as any other requests, are atomic.  If\n        // a particular request is accepted by the UAS, all the state changes\n        // associated with it are performed.  If the request is rejected, none\n        // of the state changes are performed.\n        //\n        //    Note that some requests, such as INVITEs, affect several pieces of\n        //    state.\n        //\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        const dialogId = message.callId + message.toTag + message.fromTag;\n        const dialog = this.dialogs.get(dialogId);\n        if (dialog) {\n            // [Sip-implementors] Reg. SIP reinvite, UPDATE and OPTIONS\n            // You got the question right.\n            //\n            // And you got the right answer too. :-)\n            //\n            //   Thanks,\n            //   Paul\n            //\n            // Robert Sparks wrote:\n            // > So I've lost track of the question during the musing.\n            // >\n            // > I _think_ the fundamental question being asked is this:\n            // >\n            // > Is an endpoint required to reject (with a 481) an OPTIONS request that\n            // > arrives with at to-tag but does not match any existing dialog state.\n            // > (Assuming some earlier requirement hasn't forced another error code). Or\n            // > is it OK if it just sends\n            // > a 200 OK anyhow.\n            // >\n            // > My take on the collection of specs is that its _not_ ok for it to send\n            // > the 200 OK anyhow and that it is required to send\n            // > the 481. I base this primarily on these sentences from 11.2 in 3261:\n            // >\n            // >    The response to an OPTIONS is constructed using the standard rules\n            // >    for a SIP response as discussed in Section 8.2.6.  The response code\n            // >    chosen MUST be the same that would have been chosen had the request\n            // >    been an INVITE.\n            // >\n            // > Did I miss the point of the question?\n            // >\n            // > On May 15, 2008, at 12:48 PM, Paul Kyzivat wrote:\n            // >\n            // >> [Including Robert in hopes of getting his insight on this.]\n            // https://lists.cs.columbia.edu/pipermail/sip-implementors/2008-May/019178.html\n            //\n            // Requests that do not change in any way the state of a dialog may be\n            // received within a dialog (for example, an OPTIONS request).  They are\n            // processed as if they had been received outside the dialog.\n            // https://tools.ietf.org/html/rfc3261#section-12.2.2\n            if (message.method === C.OPTIONS) {\n                const allowHeader = \"Allow: \" + AllowedMethods.toString();\n                const acceptHeader = \"Accept: \" + acceptedBodyTypes.toString();\n                this.replyStateless(message, {\n                    statusCode: 200,\n                    extraHeaders: [allowHeader, acceptHeader]\n                });\n                return;\n            }\n            // Pass the incoming request to the dialog for further handling.\n            dialog.receiveRequest(message);\n            return;\n        }\n        // The most important behaviors of a stateless UAS are the following:\n        // ...\n        // o  A stateless UAS MUST ignore ACK requests.\n        // ...\n        // https://tools.ietf.org/html/rfc3261#section-8.2.7\n        if (message.method === C.ACK) {\n            // If a final response to an INVITE was sent statelessly,\n            // the corresponding ACK:\n            // - will not match an existing transaction\n            // - may have tag in the To header field\n            // - not not match any existing dialogs\n            // Absorb unmatched ACKs.\n            return;\n        }\n        // If the request has a tag in the To header field, but the dialog\n        // identifier does not match any existing dialogs, the UAS may have\n        // crashed and restarted, or it may have received a request for a\n        // different (possibly failed) UAS (the UASs can construct the To tags\n        // so that a UAS can identify that the tag was for a UAS for which it is\n        // providing recovery).  Another possibility is that the incoming\n        // request has been simply mis-routed.  Based on the To tag, the UAS MAY\n        // either accept or reject the request.  Accepting the request for\n        // acceptable To tags provides robustness, so that dialogs can persist\n        // even through crashes.  UAs wishing to support this capability must\n        // take into consideration some issues such as choosing monotonically\n        // increasing CSeq sequence numbers even across reboots, reconstructing\n        // the route set, and accepting out-of-range RTP timestamps and sequence\n        // numbers.\n        //\n        // If the UAS wishes to reject the request because it does not wish to\n        // recreate the dialog, it MUST respond to the request with a 481\n        // (Call/Transaction Does Not Exist) status code and pass that to the\n        // server transaction.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        this.replyStateless(message, { statusCode: 481 });\n        return;\n    }\n    /**\n     * Assuming all of the checks in the previous subsections are passed,\n     * the UAS processing becomes method-specific.\n     *  https://tools.ietf.org/html/rfc3261#section-8.2.5\n     * @param message - Incoming request message.\n     */\n    receiveOutsideDialogRequest(message) {\n        switch (message.method) {\n            case C.ACK:\n                // Absorb stray out of dialog ACKs\n                break;\n            case C.BYE:\n                // If the BYE does not match an existing dialog, the UAS core SHOULD\n                // generate a 481 (Call/Transaction Does Not Exist) response and pass\n                // that to the server transaction. This rule means that a BYE sent\n                // without tags by a UAC will be rejected.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                this.replyStateless(message, { statusCode: 481 });\n                break;\n            case C.CANCEL:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n                break;\n            case C.INFO:\n                // Use of the INFO method does not constitute a separate dialog usage.\n                // INFO messages are always part of, and share the fate of, an invite\n                // dialog usage [RFC5057].  INFO messages cannot be sent as part of\n                // other dialog usages, or outside an existing dialog.\n                // https://tools.ietf.org/html/rfc6086#section-1\n                this.replyStateless(message, { statusCode: 405 }); // Should never happen\n                break;\n            case C.INVITE:\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1\n                {\n                    const uas = new InviteUserAgentServer(this, message);\n                    this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject();\n                }\n                break;\n            case C.MESSAGE:\n                // MESSAGE requests are discouraged inside a dialog.  Implementations\n                // are restricted from creating a usage for the purpose of carrying a\n                // sequence of MESSAGE requests (though some implementations use it that\n                // way, against the standard recommendation).\n                // https://tools.ietf.org/html/rfc5057#section-5.3\n                {\n                    const uas = new MessageUserAgentServer(this, message);\n                    this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case C.NOTIFY:\n                // Obsoleted by: RFC 6665\n                // If any non-SUBSCRIBE mechanisms are defined to create subscriptions,\n                // it is the responsibility of the parties defining those mechanisms to\n                // ensure that correlation of a NOTIFY message to the corresponding\n                // subscription is possible.  Designers of such mechanisms are also\n                // warned to make a distinction between sending a NOTIFY message to a\n                // subscriber who is aware of the subscription, and sending a NOTIFY\n                // message to an unsuspecting node.  The latter behavior is invalid, and\n                // MUST receive a \"481 Subscription does not exist\" response (unless\n                // some other 400- or 500-class error code is more applicable), as\n                // described in section 3.2.4.  In other words, knowledge of a\n                // subscription must exist in both the subscriber and the notifier to be\n                // valid, even if installed via a non-SUBSCRIBE mechanism.\n                // https://tools.ietf.org/html/rfc3265#section-3.2\n                //\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                {\n                    const uas = new NotifyUserAgentServer(this, message);\n                    this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.reject({ statusCode: 405 });\n                }\n                break;\n            case C.OPTIONS:\n                // https://tools.ietf.org/html/rfc3261#section-11.2\n                {\n                    const allowHeader = \"Allow: \" + AllowedMethods.toString();\n                    const acceptHeader = \"Accept: \" + acceptedBodyTypes.toString();\n                    this.replyStateless(message, {\n                        statusCode: 200,\n                        extraHeaders: [allowHeader, acceptHeader]\n                    });\n                }\n                break;\n            case C.REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new ReferUserAgentServer(this, message);\n                    this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject({ statusCode: 405 });\n                }\n                break;\n            case C.REGISTER:\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                {\n                    const uas = new RegisterUserAgentServer(this, message);\n                    this.delegate.onRegister ? this.delegate.onRegister(uas) : uas.reject({ statusCode: 405 });\n                }\n                break;\n            case C.SUBSCRIBE:\n                // https://tools.ietf.org/html/rfc6665#section-4.2\n                {\n                    const uas = new SubscribeUserAgentServer(this, message);\n                    this.delegate.onSubscribe ? this.delegate.onSubscribe(uas) : uas.reject({ statusCode: 480 });\n                }\n                break;\n            default:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n        }\n        return;\n    }\n    /**\n     * Responses are first processed by the transport layer and then passed\n     * up to the transaction layer.  The transaction layer performs its\n     * processing and then passes the response up to the TU.  The majority\n     * of response processing in the TU is method specific.  However, there\n     * are some general behaviors independent of the method.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3\n     * @param message - Incoming response message from transport layer.\n     */\n    receiveResponseFromTransport(message) {\n        // 8.1.3.1 Transaction Layer Errors\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // Handled by transaction layer callbacks.\n        // 8.1.3.2 Unrecognized Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // TODO\n        // 8.1.3.3 Vias\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.3\n        if (message.getHeaders(\"via\").length > 1) {\n            this.logger.warn(\"More than one Via header field present in the response, dropping\");\n            return;\n        }\n        // 8.1.3.4 Processing 3xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.4\n        // TODO\n        // 8.1.3.5 Processing 4xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        // TODO\n        // When the transport layer in the client receives a response, it has to\n        // determine which client transaction will handle the response, so that\n        // the processing of Sections 17.1.1 and 17.1.2 can take place.  The\n        // branch parameter in the top Via header field is used for this\n        // purpose.  A response matches a client transaction under two\n        // conditions:\n        //\n        //    1.  If the response has the same value of the branch parameter in\n        //        the top Via header field as the branch parameter in the top\n        //        Via header field of the request that created the transaction.\n        //\n        //    2.  If the method parameter in the CSeq header field matches the\n        //        method of the request that created the transaction.  The\n        //        method is needed since a CANCEL request constitutes a\n        //        different transaction, but shares the same value of the branch\n        //        parameter.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.3\n        const userAgentClientId = message.viaBranch + message.method;\n        const userAgentClient = this.userAgentClients.get(userAgentClientId);\n        // The client transport uses the matching procedures of Section\n        // 17.1.3 to attempt to match the response to an existing\n        // transaction.  If there is a match, the response MUST be passed to\n        // that transaction.  Otherwise, any element other than a stateless\n        // proxy MUST silently discard the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.9\n        if (userAgentClient) {\n            userAgentClient.transaction.receiveResponse(message);\n        }\n        else {\n            this.logger.warn(`Discarding unmatched ${message.statusCode} response to ${message.method} ${userAgentClientId}.`);\n        }\n    }\n}\n","import { getReasonPhrase, newTag, utf8Length } from \"./utils.js\";\n/**\n * When a UAS wishes to construct a response to a request, it follows\n * the general procedures detailed in the following subsections.\n * Additional behaviors specific to the response code in question, which\n * are not detailed in this section, may also be required.\n * https://tools.ietf.org/html/rfc3261#section-8.2.6\n * @internal\n */\nexport function constructOutgoingResponse(message, options) {\n    const CRLF = \"\\r\\n\";\n    if (options.statusCode < 100 || options.statusCode > 699) {\n        throw new TypeError(\"Invalid statusCode: \" + options.statusCode);\n    }\n    const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : getReasonPhrase(options.statusCode);\n    // SIP responses are distinguished from requests by having a Status-Line\n    // as their start-line.  A Status-Line consists of the protocol version\n    // followed by a numeric Status-Code and its associated textual phrase,\n    // with each element separated by a single SP character.\n    // https://tools.ietf.org/html/rfc3261#section-7.2\n    let response = \"SIP/2.0 \" + options.statusCode + \" \" + reasonPhrase + CRLF;\n    // One largely non-method-specific guideline for the generation of\n    // responses is that UASs SHOULD NOT issue a provisional response for a\n    // non-INVITE request.  Rather, UASs SHOULD generate a final response to\n    // a non-INVITE request as soon as possible.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    if (options.statusCode >= 100 && options.statusCode < 200) {\n        // TODO\n    }\n    // When a 100 (Trying) response is generated, any Timestamp header field\n    // present in the request MUST be copied into this 100 (Trying)\n    // response.  If there is a delay in generating the response, the UAS\n    // SHOULD add a delay value into the Timestamp value in the response.\n    // This value MUST contain the difference between the time of sending of\n    // the response and receipt of the request, measured in seconds.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    if (options.statusCode === 100) {\n        // TODO\n    }\n    // The From field of the response MUST equal the From header field of\n    // the request.  The Call-ID header field of the response MUST equal the\n    // Call-ID header field of the request.  The CSeq header field of the\n    // response MUST equal the CSeq field of the request.  The Via header\n    // field values in the response MUST equal the Via header field values\n    // in the request and MUST maintain the same ordering.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    const fromHeader = \"From: \" + message.getHeader(\"From\") + CRLF;\n    const callIdHeader = \"Call-ID: \" + message.callId + CRLF;\n    const cSeqHeader = \"CSeq: \" + message.cseq + \" \" + message.method + CRLF;\n    const viaHeaders = message.getHeaders(\"via\").reduce((previous, current) => {\n        return previous + \"Via: \" + current + CRLF;\n    }, \"\");\n    // If a request contained a To tag in the request, the To header field\n    // in the response MUST equal that of the request.  However, if the To\n    // header field in the request did not contain a tag, the URI in the To\n    // header field in the response MUST equal the URI in the To header\n    // field; additionally, the UAS MUST add a tag to the To header field in\n    // the response (with the exception of the 100 (Trying) response, in\n    // which a tag MAY be present).  This serves to identify the UAS that is\n    // responding, possibly resulting in a component of a dialog ID.  The\n    // same tag MUST be used for all responses to that request, both final\n    // and provisional (again excepting the 100 (Trying)).\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    let toHeader = \"To: \" + message.getHeader(\"to\");\n    if (options.statusCode > 100 && !message.parseHeader(\"to\").hasParam(\"tag\")) {\n        let toTag = options.toTag;\n        if (!toTag) {\n            // Stateless UAS Behavior...\n            // o  To header tags MUST be generated for responses in a stateless\n            //    manner - in a manner that will generate the same tag for the\n            //    same request consistently.  For information on tag construction\n            //    see Section 19.3.\n            // https://tools.ietf.org/html/rfc3261#section-8.2.7\n            toTag = newTag(); // FIXME: newTag() currently generates random tags\n        }\n        toHeader += \";tag=\" + toTag;\n    }\n    toHeader += CRLF;\n    // FIXME: TODO: needs review... moved to InviteUserAgentServer (as it is specific to that)\n    // let recordRouteHeaders = \"\";\n    // if (request.method === C.INVITE && statusCode > 100 && statusCode <= 200) {\n    //   recordRouteHeaders = request.getHeaders(\"record-route\").reduce((previous, current) => {\n    //     return previous + \"Record-Route: \" + current + CRLF;\n    //   }, \"\");\n    // }\n    // FIXME: TODO: needs review...\n    let supportedHeader = \"\";\n    if (options.supported) {\n        supportedHeader = \"Supported: \" + options.supported.join(\", \") + CRLF;\n    }\n    // FIXME: TODO: needs review...\n    let userAgentHeader = \"\";\n    if (options.userAgent) {\n        userAgentHeader = \"User-Agent: \" + options.userAgent + CRLF;\n    }\n    let extensionHeaders = \"\";\n    if (options.extraHeaders) {\n        extensionHeaders = options.extraHeaders.reduce((previous, current) => {\n            return previous + current.trim() + CRLF;\n        }, \"\");\n    }\n    // The relative order of header fields with different field names is not\n    // significant.  However, it is RECOMMENDED that header fields which are\n    // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n    // Max-Forwards, and Proxy-Authorization, for example) appear towards\n    // the top of the message to facilitate rapid parsing.\n    // https://tools.ietf.org/html/rfc3261#section-7.3.1\n    // response += recordRouteHeaders;\n    response += viaHeaders;\n    response += fromHeader;\n    response += toHeader;\n    response += cSeqHeader;\n    response += callIdHeader;\n    response += supportedHeader;\n    response += userAgentHeader;\n    response += extensionHeaders;\n    if (options.body) {\n        response += \"Content-Type: \" + options.body.contentType + CRLF;\n        response += \"Content-Length: \" + utf8Length(options.body.content) + CRLF + CRLF;\n        response += options.body.content;\n    }\n    else {\n        response += \"Content-Length: \" + 0 + CRLF + CRLF;\n    }\n    return { message: response };\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { Timers } from \"../timers.js\";\nimport { ServerTransaction } from \"./server-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * INVITE Server Transaction.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-17.2.1\n * @public\n */\nexport class InviteServerTransaction extends ServerTransaction {\n    /**\n     * Constructor.\n     * Upon construction, a \"100 Trying\" reply will be immediately sent.\n     * After construction the transaction will be in the \"proceeding\" state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     * @param request - Incoming INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Proceeding, \"sip.transaction.ist\");\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        this.stopProgressExtensionTimer();\n        if (this.H) {\n            clearTimeout(this.H);\n            this.H = undefined;\n        }\n        if (this.I) {\n            clearTimeout(this.I);\n            this.I = undefined;\n        }\n        if (this.L) {\n            clearTimeout(this.L);\n            this.L = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"ist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */\n    receiveRequest(request) {\n        switch (this.state) {\n            case TransactionState.Proceeding:\n                // If a request retransmission is received while in the \"Proceeding\" state, the most\n                // recent provisional response that was received from the TU MUST be passed to the\n                // transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.INVITE) {\n                    if (this.lastProvisionalResponse) {\n                        this.send(this.lastProvisionalResponse).catch((error) => {\n                            this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                        });\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Accepted:\n                // While in the \"Accepted\" state, any retransmissions of the INVITE\n                // received will match this transaction state machine and will be\n                // absorbed by the machine without changing its state. These\n                // retransmissions are not passed onto the TU.\n                // https://tools.ietf.org/html/rfc6026#section-7.1\n                if (request.method === C.INVITE) {\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // Furthermore, while in the \"Completed\" state, if a request retransmission is\n                // received, the server SHOULD pass the response to the transport for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.INVITE) {\n                    if (!this.lastFinalResponse) {\n                        throw new Error(\"Last final response undefined.\");\n                    }\n                    this.send(this.lastFinalResponse).catch((error) => {\n                        this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                    });\n                    return;\n                }\n                // If an ACK is received while the server transaction is in the \"Completed\" state,\n                // the server transaction MUST transition to the \"Confirmed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.ACK) {\n                    this.stateTransition(TransactionState.Confirmed);\n                    return;\n                }\n                break;\n            case TransactionState.Confirmed:\n                // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n                // triggered from retransmissions of the final response.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.INVITE || request.method === C.ACK) {\n                    return;\n                }\n                break;\n            case TransactionState.Terminated:\n                // For good measure absorb any additional messages that arrive (should not happen).\n                if (request.method === C.INVITE || request.method === C.ACK) {\n                    return;\n                }\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${request.method} request while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response.\n     * @param response - Response.\n     */\n    receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        switch (this.state) {\n            case TransactionState.Proceeding:\n                // The TU passes any number of provisional responses to the server\n                // transaction. So long as the server transaction is in the\n                // \"Proceeding\" state, each of these MUST be passed to the transport\n                // layer for transmission. They are not sent reliably by the\n                // transaction layer (they are not retransmitted by it) and do not cause\n                // a change in the state of the server transaction.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.lastProvisionalResponse = response;\n                    // Start the progress extension timer only for a non-100 provisional response.\n                    if (statusCode > 100) {\n                        this.startProgressExtensionTimer(); // FIXME: remove\n                    }\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send 1xx response.\");\n                    });\n                    return;\n                }\n                // If, while in the \"Proceeding\" state, the TU passes a 2xx response\n                // to the server transaction, the server transaction MUST pass this\n                // response to the transport layer for transmission. It is not\n                // retransmitted by the server transaction; retransmissions of 2xx\n                // responses are handled by the TU. The server transaction MUST then\n                // transition to the \"Accepted\" state.\n                // https://tools.ietf.org/html/rfc6026#section-8.5\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition(TransactionState.Accepted);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                // While in the \"Proceeding\" state, if the TU passes a response with\n                // status code from 300 to 699 to the server transaction, the response\n                // MUST be passed to the transport layer for transmission, and the state\n                // machine MUST enter the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition(TransactionState.Completed);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send non-2xx final response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Accepted:\n                // While in the \"Accepted\" state, if the TU passes a 2xx response,\n                // the server transaction MUST pass the response to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc6026#section-8.7\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                break;\n            case TransactionState.Confirmed:\n                break;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * Retransmit the last 2xx response. This is a noop if not in the \"accepted\" state.\n     */\n    retransmitAcceptedResponse() {\n        if (this.state === TransactionState.Accepted && this.lastFinalResponse) {\n            this.send(this.lastFinalResponse).catch((error) => {\n                this.logTransportError(error, \"Failed to send 2xx response.\");\n            });\n        }\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and MUST remain in the current state.\n     * https://tools.ietf.org/html/rfc6026#section-8.8\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n    }\n    /** For logging. */\n    typeToString() {\n        return \"INVITE server transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */\n    stateTransition(newState) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Proceeding:\n                invalidStateTransition();\n                break;\n            case TransactionState.Accepted:\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Confirmed:\n                if (this.state !== TransactionState.Completed) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Accepted &&\n                    this.state !== TransactionState.Completed &&\n                    this.state !== TransactionState.Confirmed) {\n                    invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // On any state transition, stop resending provisional responses\n        this.stopProgressExtensionTimer();\n        // The purpose of the \"Accepted\" state is to absorb retransmissions of an accepted INVITE request.\n        // Any such retransmissions are absorbed entirely within the server transaction.\n        // They are not passed up to the TU since any downstream UAS cores that accepted the request have\n        // taken responsibility for reliability and will already retransmit their 2xx responses if necessary.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === TransactionState.Accepted) {\n            this.L = setTimeout(() => this.timerL(), Timers.TIMER_L);\n        }\n        // When the \"Completed\" state is entered, timer H MUST be set to fire in 64*T1 seconds for all transports.\n        // Timer H determines when the server transaction abandons retransmitting the response.\n        // If an ACK is received while the server transaction is in the \"Completed\" state,\n        // the server transaction MUST transition to the \"Confirmed\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === TransactionState.Completed) {\n            // FIXME: Missing timer G for unreliable transports.\n            this.H = setTimeout(() => this.timerH(), Timers.TIMER_H);\n        }\n        // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n        // triggered from retransmissions of the final response. When this state is entered, timer I\n        // is set to fire in T4 seconds for unreliable transports, and zero seconds for reliable\n        // transports. Once timer I fires, the server MUST transition to the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === TransactionState.Confirmed) {\n            // FIXME: This timer is not getting set correctly for unreliable transports.\n            this.I = setTimeout(() => this.timerI(), Timers.TIMER_I);\n        }\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */\n    startProgressExtensionTimer() {\n        // Start the progress extension timer only for the first non-100 provisional response.\n        if (this.progressExtensionTimer === undefined) {\n            this.progressExtensionTimer = setInterval(() => {\n                this.logger.debug(`Progress extension timer expired for INVITE server transaction ${this.id}.`);\n                if (!this.lastProvisionalResponse) {\n                    throw new Error(\"Last provisional response undefined.\");\n                }\n                this.send(this.lastProvisionalResponse).catch((error) => {\n                    this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                });\n            }, Timers.PROVISIONAL_RESPONSE_INTERVAL);\n        }\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer id. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */\n    stopProgressExtensionTimer() {\n        if (this.progressExtensionTimer !== undefined) {\n            clearInterval(this.progressExtensionTimer);\n            this.progressExtensionTimer = undefined;\n        }\n    }\n    /**\n     * While in the \"Proceeding\" state, if the TU passes a response with status code\n     * from 300 to 699 to the server transaction, the response MUST be passed to the\n     * transport layer for transmission, and the state machine MUST enter the \"Completed\" state.\n     * For unreliable transports, timer G is set to fire in T1 seconds, and is not set to fire for\n     * reliable transports. If timer G fires, the response is passed to the transport layer once\n     * more for retransmission, and timer G is set to fire in MIN(2*T1, T2) seconds. From then on,\n     * when timer G fires, the response is passed to the transport again for transmission, and\n     * timer G is reset with a value that doubles, unless that value exceeds T2, in which case\n     * it is reset with the value of T2.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */\n    timerG() {\n        // TODO\n    }\n    /**\n     * If timer H fires while in the \"Completed\" state, it implies that the ACK was never received.\n     * In this case, the server transaction MUST transition to the \"Terminated\" state, and MUST\n     * indicate to the TU that a transaction failure has occurred.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */\n    timerH() {\n        this.logger.debug(`Timer H expired for INVITE server transaction ${this.id}.`);\n        if (this.state === TransactionState.Completed) {\n            this.logger.warn(\"ACK to negative final response was never received, terminating transaction.\");\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * Once timer I fires, the server MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */\n    timerI() {\n        this.logger.debug(`Timer I expired for INVITE server transaction ${this.id}.`);\n        this.stateTransition(TransactionState.Terminated);\n    }\n    /**\n     * When Timer L fires and the state machine is in the \"Accepted\" state, the machine MUST\n     * transition to the \"Terminated\" state. Once the transaction is in the \"Terminated\" state,\n     * it MUST be destroyed immediately. Timer L reflects the amount of time the server\n     * transaction could receive 2xx responses for retransmission from the\n     * TU while it is waiting to receive an ACK.\n     * https://tools.ietf.org/html/rfc6026#section-7.1\n     * https://tools.ietf.org/html/rfc6026#section-8.7\n     */\n    timerL() {\n        this.logger.debug(`Timer L expired for INVITE server transaction ${this.id}.`);\n        if (this.state === TransactionState.Accepted) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { Transaction } from \"./transaction.js\";\n/**\n * Server Transaction.\n * @remarks\n * The server transaction is responsible for the delivery of requests to\n * the TU and the reliable transmission of responses.  It accomplishes\n * this through a state machine.  Server transactions are created by the\n * core when a request is received, and transaction handling is desired\n * for that request (this is not always the case).\n * https://tools.ietf.org/html/rfc3261#section-17.2\n * @public\n */\nexport class ServerTransaction extends Transaction {\n    constructor(_request, transport, user, state, loggerCategory) {\n        super(transport, user, _request.viaBranch, state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n    }\n    /** The incoming request the transaction handling. */\n    get request() {\n        return this._request;\n    }\n}\n","import { TransportError } from \"../exceptions/transport-error.js\";\n/**\n * Transaction.\n * @remarks\n * SIP is a transactional protocol: interactions between components take\n * place in a series of independent message exchanges.  Specifically, a\n * SIP transaction consists of a single request and any responses to\n * that request, which include zero or more provisional responses and\n * one or more final responses.  In the case of a transaction where the\n * request was an INVITE (known as an INVITE transaction), the\n * transaction also includes the ACK only if the final response was not\n * a 2xx response.  If the response was a 2xx, the ACK is not considered\n * part of the transaction.\n * https://tools.ietf.org/html/rfc3261#section-17\n * @public\n */\nexport class Transaction {\n    constructor(_transport, _user, _id, _state, loggerCategory) {\n        this._transport = _transport;\n        this._user = _user;\n        this._id = _id;\n        this._state = _state;\n        this.listeners = new Array();\n        this.logger = _user.loggerFactory.getLogger(loggerCategory, _id);\n        this.logger.debug(`Constructing ${this.typeToString()} with id ${this.id}.`);\n    }\n    /**\n     * Destructor.\n     * Once the transaction is in the \"terminated\" state, it is destroyed\n     * immediately and there is no need to call `dispose`. However, if a\n     * transaction needs to be ended prematurely, the transaction user may\n     * do so by calling this method (for example, perhaps the UA is shutting down).\n     * No state transition will occur upon calling this method, all outstanding\n     * transmission timers will be cancelled, and use of the transaction after\n     * calling `dispose` is undefined.\n     */\n    dispose() {\n        this.logger.debug(`Destroyed ${this.typeToString()} with id ${this.id}.`);\n    }\n    /** Transaction id. */\n    get id() {\n        return this._id;\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        throw new Error(\"Invalid kind.\");\n    }\n    /** Transaction state. */\n    get state() {\n        return this._state;\n    }\n    /** Transaction transport. */\n    get transport() {\n        return this._transport;\n    }\n    /**\n     * Sets up a function that will be called whenever the transaction state changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */\n    addStateChangeListener(listener, options) {\n        const onceWrapper = () => {\n            this.removeStateChangeListener(onceWrapper);\n            listener();\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * This is currently public so tests may spy on it.\n     * @internal\n     */\n    notifyStateChangeListeners() {\n        this.listeners.slice().forEach((listener) => listener());\n    }\n    /**\n     * Removes a listener previously registered with addStateListener.\n     * @param listener - Callback function.\n     */\n    removeStateChangeListener(listener) {\n        this.listeners = this.listeners.filter((l) => l !== listener);\n    }\n    logTransportError(error, message) {\n        this.logger.error(error.message);\n        this.logger.error(`Transport error occurred in ${this.typeToString()} with id ${this.id}.`);\n        this.logger.error(message);\n    }\n    /**\n     * Pass message to transport for transmission. If transport fails,\n     * the transaction user is notified by callback to onTransportError().\n     * @returns\n     * Rejects with `TransportError` if transport fails.\n     */\n    send(message) {\n        return this.transport.send(message).catch((error) => {\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful\n            // make sure we convert it to a TransportError if need be.\n            if (error instanceof TransportError) {\n                this.onTransportError(error);\n                throw error;\n            }\n            let transportError;\n            if (error && typeof error.message === \"string\") {\n                transportError = new TransportError(error.message);\n            }\n            else {\n                transportError = new TransportError();\n            }\n            this.onTransportError(transportError);\n            throw transportError;\n        });\n    }\n    setState(state) {\n        this.logger.debug(`State change to \"${state}\" on ${this.typeToString()} with id ${this.id}.`);\n        this._state = state;\n        if (this._user.onStateChange) {\n            this._user.onStateChange(state);\n        }\n        this.notifyStateChangeListeners();\n    }\n    typeToString() {\n        return \"UnknownType\";\n    }\n}\n","import { Exception } from \"./exception.js\";\n/**\n * Transport error.\n * @public\n */\nexport class TransportError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Unspecified transport error.\");\n    }\n}\n","/**\n * Transaction state.\n * @public\n */\nexport var TransactionState;\n(function (TransactionState) {\n    TransactionState[\"Accepted\"] = \"Accepted\";\n    TransactionState[\"Calling\"] = \"Calling\";\n    TransactionState[\"Completed\"] = \"Completed\";\n    TransactionState[\"Confirmed\"] = \"Confirmed\";\n    TransactionState[\"Proceeding\"] = \"Proceeding\";\n    TransactionState[\"Terminated\"] = \"Terminated\";\n    TransactionState[\"Trying\"] = \"Trying\";\n})(TransactionState = TransactionState || (TransactionState = {}));\n","import { Timers } from \"../timers.js\";\nimport { ClientTransaction } from \"./client-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * Non-INVITE Client Transaction.\n * @remarks\n * Non-INVITE transactions do not make use of ACK.\n * They are simple request-response interactions.\n * https://tools.ietf.org/html/rfc3261#section-17.1.2\n * @public\n */\nexport class NonInviteClientTransaction extends ClientTransaction {\n    /**\n     * Constructor\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2\n     * @param request - The outgoing Non-INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Trying, \"sip.transaction.nict\");\n        // FIXME: Timer E for unreliable transports not implemented.\n        //\n        // The \"Trying\" state is entered when the TU initiates a new client\n        // transaction with a request.  When entering this state, the client\n        // transaction SHOULD set timer F to fire in 64*T1 seconds. The request\n        // MUST be passed to the transport layer for transmission.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        this.F = setTimeout(() => this.timerF(), Timers.TIMER_F);\n        this.send(request.toString()).catch((error) => {\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.F) {\n            clearTimeout(this.F);\n            this.F = undefined;\n        }\n        if (this.K) {\n            clearTimeout(this.K);\n            this.K = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"nict\";\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */\n    receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        switch (this.state) {\n            case TransactionState.Trying:\n                // If a provisional response is received while in the \"Trying\" state, the\n                // response MUST be passed to the TU, and then the client transaction\n                // SHOULD move to the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition(TransactionState.Proceeding);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Trying\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Proceeding:\n                // If a provisional response is received while in the \"Proceeding\" state,\n                // the response MUST be passed to the TU. (From Figure 6)\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) {\n                        return this.user.receiveResponse(response);\n                    }\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Proceeding\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // The \"Completed\" state exists to buffer any additional response\n                // retransmissions that may be received (which is why the client\n                // transaction remains there only for unreliable transports).\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                return;\n            case TransactionState.Terminated:\n                // For good measure just absorb additional response retransmissions.\n                return;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE client transaction received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure has occurred,\n     * and the client transaction SHOULD transition directly to the \"Terminated\" state.\n     * The TU will handle the fail over mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - Transport error\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n        this.stateTransition(TransactionState.Terminated, true);\n    }\n    /** For logging. */\n    typeToString() {\n        return \"non-INVITE client transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Trying:\n                invalidStateTransition();\n                break;\n            case TransactionState.Proceeding:\n                if (this.state !== TransactionState.Trying) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Trying && this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Trying &&\n                    this.state !== TransactionState.Proceeding &&\n                    this.state !== TransactionState.Completed) {\n                    if (!dueToTransportError) {\n                        invalidStateTransition();\n                    }\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // Once the client transaction enters the \"Completed\" state, it MUST set\n        // Timer K to fire in T4 seconds for unreliable transports, and zero\n        // seconds for reliable transports  The \"Completed\" state exists to\n        // buffer any additional response retransmissions that may be received\n        // (which is why the client transaction remains there only for unreliable transports).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === TransactionState.Completed) {\n            if (this.F) {\n                clearTimeout(this.F);\n                this.F = undefined;\n            }\n            this.K = setTimeout(() => this.timerK(), Timers.TIMER_K);\n        }\n        // Once the transaction is in the terminated state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * If Timer F fires while the client transaction is still in the\n     * \"Trying\" state, the client transaction SHOULD inform the TU about the\n     * timeout, and then it SHOULD enter the \"Terminated\" state.\n     * If timer F fires while in the \"Proceeding\" state, the TU MUST be informed of\n     * a timeout, and the client transaction MUST transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */\n    timerF() {\n        this.logger.debug(`Timer F expired for non-INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Trying || this.state === TransactionState.Proceeding) {\n            this.onRequestTimeout();\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * If Timer K fires while in this (COMPLETED) state, the client transaction\n     * MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */\n    timerK() {\n        if (this.state === TransactionState.Completed) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { Transaction } from \"./transaction.js\";\n/**\n * Client Transaction.\n * @remarks\n * The client transaction provides its functionality through the\n * maintenance of a state machine.\n *\n * The TU communicates with the client transaction through a simple\n * interface.  When the TU wishes to initiate a new transaction, it\n * creates a client transaction and passes it the SIP request to send\n * and an IP address, port, and transport to which to send it.  The\n * client transaction begins execution of its state machine.  Valid\n * responses are passed up to the TU from the client transaction.\n * https://tools.ietf.org/html/rfc3261#section-17.1\n * @public\n */\nexport class ClientTransaction extends Transaction {\n    constructor(_request, transport, user, state, loggerCategory) {\n        super(transport, user, ClientTransaction.makeId(_request), state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n        // The Via header field indicates the transport used for the transaction\n        // and identifies the location where the response is to be sent.  A Via\n        // header field value is added only after the transport that will be\n        // used to reach the next hop has been selected (which may involve the\n        // usage of the procedures in [4]).\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n        _request.setViaHeader(this.id, transport.protocol);\n    }\n    static makeId(request) {\n        if (request.method === \"CANCEL\") {\n            if (!request.branch) {\n                throw new Error(\"Outgoing CANCEL request without a branch.\");\n            }\n            return request.branch;\n        }\n        else {\n            return \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n        }\n    }\n    /** The outgoing request the transaction handling. */\n    get request() {\n        return this._request;\n    }\n    /**\n     * A 408 to non-INVITE will always arrive too late to be useful ([3]),\n     * The client already has full knowledge of the timeout. The only\n     * information this message would convey is whether or not the server\n     * believed the transaction timed out. However, with the current design\n     * of the NIT, a client cannot do anything with this knowledge. Thus,\n     * the 408 is simply wasting network resources and contributes to the\n     * response bombardment illustrated in [3].\n     * https://tools.ietf.org/html/rfc4320#section-4.1\n     */\n    onRequestTimeout() {\n        if (this.user.onRequestTimeout) {\n            this.user.onRequestTimeout();\n        }\n    }\n}\n","import { Dialog } from \"../dialogs/dialog.js\";\nimport { SessionDialog } from \"../dialogs/session-dialog.js\";\nimport { SignalingState } from \"../session/session.js\";\nimport { InviteClientTransaction } from \"../transactions/invite-client-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * INVITE UAC.\n * @remarks\n * 13 Initiating a Session\n * https://tools.ietf.org/html/rfc3261#section-13\n * 13.1 Overview\n * https://tools.ietf.org/html/rfc3261#section-13.1\n * 13.2 UAC Processing\n * https://tools.ietf.org/html/rfc3261#section-13.2\n * @public\n */\nexport class InviteUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(InviteClientTransaction, core, message, delegate);\n        this.confirmedDialogAcks = new Map();\n        this.confirmedDialogs = new Map();\n        this.earlyDialogs = new Map();\n        this.delegate = delegate;\n    }\n    dispose() {\n        // The UAC core considers the INVITE transaction completed 64*T1 seconds\n        // after the reception of the first 2xx response.  At this point all the\n        // early dialogs that have not transitioned to established dialogs are\n        // terminated.  Once the INVITE transaction is considered completed by\n        // the UAC core, no more new 2xx responses are expected to arrive.\n        //\n        // If, after acknowledging any 2xx response to an INVITE, the UAC does\n        // not want to continue with that dialog, then the UAC MUST terminate\n        // the dialog by sending a BYE request as described in Section 15.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n        this.earlyDialogs.forEach((earlyDialog) => earlyDialog.dispose());\n        this.earlyDialogs.clear();\n        super.dispose();\n    }\n    /**\n     * Special case for transport error while sending ACK.\n     * @param error - Transport error\n     */\n    onTransportError(error) {\n        if (this.transaction.state === TransactionState.Calling) {\n            return super.onTransportError(error);\n        }\n        // If not in 'calling' state, the transport error occurred while sending an ACK.\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error while sending ACK.\");\n    }\n    /**\n     * Once the INVITE has been passed to the INVITE client transaction, the\n     * UAC waits for responses for the INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2\n     * @param incomingResponse - Incoming response to INVITE request.\n     */\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message)) {\n            return;\n        }\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        switch (true) {\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) {\n                    this.delegate.onTrying({ message });\n                }\n                return;\n            case /^1[0-9]{2}$/.test(statusCode):\n                // Zero, one or multiple provisional responses may arrive before one or\n                // more final responses are received.  Provisional responses for an\n                // INVITE request can create \"early dialogs\".  If a provisional response\n                // has a tag in the To field, and if the dialog ID of the response does\n                // not match an existing dialog, one is constructed using the procedures\n                // defined in Section 12.1.2.\n                //\n                // The early dialog will only be needed if the UAC needs to send a\n                // request to its peer within the dialog before the initial INVITE\n                // transaction completes.  Header fields present in a provisional\n                // response are applicable as long as the dialog is in the early state\n                // (for example, an Allow header field in a provisional response\n                // contains the methods that can be used in the dialog while this is in\n                // the early state).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.1\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Provisional without to tag, no dialog to create.\n                    if (!message.toTag) {\n                        this.logger.warn(\"Non-100 1xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Provisional without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"Non-100 1xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = Dialog.initialDialogStateForUserAgentClient(this.message, message);\n                    // Have existing early dialog or create a new one.\n                    let earlyDialog = this.earlyDialogs.get(dialogState.id);\n                    if (!earlyDialog) {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof InviteClientTransaction)) {\n                            throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        }\n                        earlyDialog = new SessionDialog(transaction, this.core, dialogState);\n                        this.earlyDialogs.set(earlyDialog.id, earlyDialog);\n                    }\n                    // Guard against out of order reliable provisional responses.\n                    // Note that this is where the rseq tracking is done.\n                    if (!earlyDialog.reliableSequenceGuard(message)) {\n                        this.logger.warn(\"1xx INVITE reliable response received out of order or is a retransmission, dropping.\");\n                        return;\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (earlyDialog.signalingState === SignalingState.Initial ||\n                        earlyDialog.signalingState === SignalingState.HaveLocalOffer) {\n                        earlyDialog.signalingStateTransition(message);\n                    }\n                    // Pass response to delegate.\n                    const session = earlyDialog;\n                    if (this.delegate && this.delegate.onProgress) {\n                        this.delegate.onProgress({\n                            message,\n                            session,\n                            prack: (options) => {\n                                const outgoingPrackRequest = session.prack(undefined, options);\n                                return outgoingPrackRequest;\n                            }\n                        });\n                    }\n                }\n                return;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Multiple 2xx responses may arrive at the UAC for a single INVITE\n                // request due to a forking proxy.  Each response is distinguished by\n                // the tag parameter in the To header field, and each represents a\n                // distinct dialog, with a distinct dialog identifier.\n                //\n                // If the dialog identifier in the 2xx response matches the dialog\n                // identifier of an existing dialog, the dialog MUST be transitioned to\n                // the \"confirmed\" state, and the route set for the dialog MUST be\n                // recomputed based on the 2xx response using the procedures of Section\n                // 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n                // constructed using the procedures of Section 12.1.2.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Final without to tag, malformed response.\n                    if (!message.toTag) {\n                        this.logger.error(\"2xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Final without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"2xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = Dialog.initialDialogStateForUserAgentClient(this.message, message);\n                    // NOTE: Currently our transaction layer is caching the 2xx ACKs and\n                    // handling retransmissions of the ACK which is an approach which is\n                    // not to spec. In any event, this block is intended to provide a to\n                    // spec implementation of ACK retransmissions, but it should not be\n                    // hit currently.\n                    let dialog = this.confirmedDialogs.get(dialogState.id);\n                    if (dialog) {\n                        // Once the ACK has been constructed, the procedures of [4] are used to\n                        // determine the destination address, port and transport.  However, the\n                        // request is passed to the transport layer directly for transmission,\n                        // rather than a client transaction.  This is because the UAC core\n                        // handles retransmissions of the ACK, not the transaction layer.  The\n                        // ACK MUST be passed to the client transport every time a\n                        // retransmission of the 2xx final response that triggered the ACK\n                        // arrives.\n                        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                        const outgoingAckRequest = this.confirmedDialogAcks.get(dialogState.id);\n                        if (outgoingAckRequest) {\n                            const transaction = this.transaction;\n                            if (!(transaction instanceof InviteClientTransaction)) {\n                                throw new Error(\"Client transaction not instance of InviteClientTransaction.\");\n                            }\n                            transaction.ackResponse(outgoingAckRequest.message);\n                        }\n                        else {\n                            // If still waiting for an ACK, drop the retransmission of the 2xx final response.\n                        }\n                        return;\n                    }\n                    // If the dialog identifier in the 2xx response matches the dialog\n                    // identifier of an existing dialog, the dialog MUST be transitioned to\n                    // the \"confirmed\" state, and the route set for the dialog MUST be\n                    // recomputed based on the 2xx response using the procedures of Section\n                    // 12.2.1.2. Otherwise, a new dialog in the \"confirmed\" state MUST be\n                    // constructed using the procedures of Section 12.1.2.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    dialog = this.earlyDialogs.get(dialogState.id);\n                    if (dialog) {\n                        dialog.confirm();\n                        dialog.recomputeRouteSet(message);\n                        this.earlyDialogs.delete(dialog.id);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    }\n                    else {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof InviteClientTransaction)) {\n                            throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        }\n                        dialog = new SessionDialog(transaction, this.core, dialogState);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (dialog.signalingState === SignalingState.Initial ||\n                        dialog.signalingState === SignalingState.HaveLocalOffer) {\n                        dialog.signalingStateTransition(message);\n                    }\n                    // Session Initiated! :)\n                    const session = dialog;\n                    // The UAC core MUST generate an ACK request for each 2xx received from\n                    // the transaction layer.  The header fields of the ACK are constructed\n                    // in the same way as for any request sent within a dialog (see Section\n                    // 12) with the exception of the CSeq and the header fields related to\n                    // authentication.  The sequence number of the CSeq header field MUST be\n                    // the same as the INVITE being acknowledged, but the CSeq method MUST\n                    // be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n                    // the 2xx contains an offer (based on the rules above), the ACK MUST\n                    // carry an answer in its body.  If the offer in the 2xx response is not\n                    // acceptable, the UAC core MUST generate a valid answer in the ACK and\n                    // then send a BYE immediately.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    if (this.delegate && this.delegate.onAccept) {\n                        this.delegate.onAccept({\n                            message,\n                            session,\n                            ack: (options) => {\n                                const outgoingAckRequest = session.ack(options);\n                                this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                                return outgoingAckRequest;\n                            }\n                        });\n                    }\n                    else {\n                        const outgoingAckRequest = session.ack();\n                        this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                    }\n                }\n                return;\n            case /^3[0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog) => earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A 3xx response may contain one or more Contact header field values\n                // providing new addresses where the callee might be reachable.\n                // Depending on the status code of the 3xx response (see Section 21.3),\n                // the UAC MAY choose to try those new addresses.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.2\n                if (this.delegate && this.delegate.onRedirect) {\n                    this.delegate.onRedirect({ message });\n                }\n                return;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog) => earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A single non-2xx final response may be received for the INVITE.  4xx,\n                // 5xx and 6xx responses may contain a Contact header field value\n                // indicating the location where additional information about the error\n                // can be found.  Subsequent final responses (which would only arrive\n                // under error conditions) MUST be ignored.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                if (this.delegate && this.delegate.onReject) {\n                    this.delegate.onReject({ message });\n                }\n                return;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n        throw new Error(`Executing what should be an unreachable code path receiving ${statusCode} response.`);\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { C } from \"../messages/methods/constants.js\";\n/**\n * Dialog.\n * @remarks\n * A key concept for a user agent is that of a dialog.  A dialog\n * represents a peer-to-peer SIP relationship between two user agents\n * that persists for some time.  The dialog facilitates sequencing of\n * messages between the user agents and proper routing of requests\n * between both of them.  The dialog represents a context in which to\n * interpret SIP messages.\n * https://tools.ietf.org/html/rfc3261#section-12\n * @public\n */\nexport class Dialog {\n    /**\n     * Dialog constructor.\n     * @param core - User agent core.\n     * @param dialogState - Initial dialog state.\n     */\n    constructor(core, dialogState) {\n        this.core = core;\n        this.dialogState = dialogState;\n        this.core.dialogs.set(this.id, this);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */\n    static initialDialogStateForUserAgentClient(outgoingRequestMessage, incomingResponseMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingResponseMessage.getHeaders(\"record-route\").reverse();\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const contact = incomingResponseMessage.parseHeader(\"contact\");\n        if (!contact) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n        }\n        if (!(contact instanceof NameAddrHeader)) {\n            throw new Error(\"Contact not instance of NameAddrHeader.\");\n        }\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingRequestMessage.callId;\n        const localTag = outgoingRequestMessage.fromTag;\n        const remoteTag = incomingResponseMessage.toTag;\n        if (!callId) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Call id undefined.\");\n        }\n        if (!localTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From tag undefined.\");\n        }\n        if (!remoteTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        }\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingRequestMessage.from) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From undefined.\");\n        }\n        if (!outgoingRequestMessage.to) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To undefined.\");\n        }\n        const localURI = outgoingRequestMessage.from.uri;\n        const remoteURI = outgoingRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        if (!incomingResponseMessage.statusCode) {\n            throw new Error(\"Incoming response status code undefined.\");\n        }\n        const early = incomingResponseMessage.statusCode < 200 ? true : false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early,\n            callId,\n            localTag,\n            remoteTag,\n            localSequenceNumber,\n            remoteSequenceNumber,\n            localURI,\n            remoteURI,\n            remoteTarget,\n            routeSet,\n            secure\n        };\n        return dialogState;\n    }\n    /**\n     * The UAS then constructs the state of the dialog.  This state MUST be\n     * maintained for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.1\n     * @param incomingRequestMessage - Incoming request message creating dialog.\n     * @param toTag - Tag in the To field in the response to the incoming request.\n     */\n    static initialDialogStateForUserAgentServer(incomingRequestMessage, toTag, early = false) {\n        // If the request arrived over TLS, and the Request-URI contained a SIPS\n        // URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the request, taken in order and preserving all URI\n        // parameters.  If no Record-Route header field is present in the\n        // request, the route set MUST be set to the empty set.  This route set,\n        // even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const routeSet = incomingRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingRequestMessage.parseHeader(\"contact\");\n        if (!contact) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n        }\n        if (!(contact instanceof NameAddrHeader)) {\n            throw new Error(\"Contact not instance of NameAddrHeader.\");\n        }\n        const remoteTarget = contact.uri;\n        // The remote sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The local sequence\n        // number MUST be empty.  The call identifier component of the dialog ID\n        // MUST be set to the value of the Call-ID in the request.  The local\n        // tag component of the dialog ID MUST be set to the tag in the To field\n        // in the response to the request (which always includes a tag), and the\n        // remote tag component of the dialog ID MUST be set to the tag from the\n        // From field in the request.  A UAS MUST be prepared to receive a\n        // request without a tag in the From field, in which case the tag is\n        // considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate From tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteSequenceNumber = incomingRequestMessage.cseq;\n        const localSequenceNumber = undefined;\n        const callId = incomingRequestMessage.callId;\n        const localTag = toTag;\n        const remoteTag = incomingRequestMessage.fromTag;\n        // The remote URI MUST be set to the URI in the From field, and the\n        // local URI MUST be set to the URI in the To field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteURI = incomingRequestMessage.from.uri;\n        const localURI = incomingRequestMessage.to.uri;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early,\n            callId,\n            localTag,\n            remoteTag,\n            localSequenceNumber,\n            remoteSequenceNumber,\n            localURI,\n            remoteURI,\n            remoteTarget,\n            routeSet,\n            secure\n        };\n        return dialogState;\n    }\n    /** Destructor. */\n    dispose() {\n        this.core.dialogs.delete(this.id);\n    }\n    /**\n     * A dialog is identified at each UA with a dialog ID, which consists of\n     * a Call-ID value, a local tag and a remote tag.  The dialog ID at each\n     * UA involved in the dialog is not the same.  Specifically, the local\n     * tag at one UA is identical to the remote tag at the peer UA.  The\n     * tags are opaque tokens that facilitate the generation of unique\n     * dialog IDs.\n     * https://tools.ietf.org/html/rfc3261#section-12\n     */\n    get id() {\n        return this.dialogState.id;\n    }\n    /**\n     * A dialog can also be in the \"early\" state, which occurs when it is\n     * created with a provisional response, and then it transition to the\n     * \"confirmed\" state when a 2xx final response received or is sent.\n     *\n     * Note: RFC 3261 is concise on when a dialog is \"confirmed\", but it\n     * can be a point of confusion if an INVITE dialog is \"confirmed\" after\n     * a 2xx is sent or after receiving the ACK for the 2xx response.\n     * With careful reading it can be inferred a dialog is always is\n     * \"confirmed\" when the 2xx is sent (regardless of type of dialog).\n     * However a INVITE dialog does have additional considerations\n     * when it is confirmed but an ACK has not yet been received (in\n     * particular with regard to a callee sending BYE requests).\n     */\n    get early() {\n        return this.dialogState.early;\n    }\n    /** Call identifier component of the dialog id. */\n    get callId() {\n        return this.dialogState.callId;\n    }\n    /** Local tag component of the dialog id. */\n    get localTag() {\n        return this.dialogState.localTag;\n    }\n    /** Remote tag component of the dialog id. */\n    get remoteTag() {\n        return this.dialogState.remoteTag;\n    }\n    /** Local sequence number (used to order requests from the UA to its peer). */\n    get localSequenceNumber() {\n        return this.dialogState.localSequenceNumber;\n    }\n    /** Remote sequence number (used to order requests from its peer to the UA). */\n    get remoteSequenceNumber() {\n        return this.dialogState.remoteSequenceNumber;\n    }\n    /** Local URI. */\n    get localURI() {\n        return this.dialogState.localURI;\n    }\n    /** Remote URI. */\n    get remoteURI() {\n        return this.dialogState.remoteURI;\n    }\n    /** Remote target. */\n    get remoteTarget() {\n        return this.dialogState.remoteTarget;\n    }\n    /**\n     * Route set, which is an ordered list of URIs. The route set is the\n     * list of servers that need to be traversed to send a request to the peer.\n     */\n    get routeSet() {\n        return this.dialogState.routeSet;\n    }\n    /**\n     * If the request was sent over TLS, and the Request-URI contained\n     * a SIPS URI, the \"secure\" flag is set to true. *NOT IMPLEMENTED*\n     */\n    get secure() {\n        return this.dialogState.secure;\n    }\n    /** The user agent core servicing this dialog. */\n    get userAgentCore() {\n        return this.core;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */\n    confirm() {\n        this.dialogState.early = false;\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     *\n     *    Note that some requests, such as INVITEs, affect several pieces of\n     *    state.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */\n    receiveRequest(message) {\n        // ACK guard.\n        // By convention, the handling of ACKs is the responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, ACKs have same sequence number as the associated INVITE.\n        if (message.method === C.ACK) {\n            return;\n        }\n        // If the remote sequence number was not empty, but the sequence number\n        // of the request is lower than the remote sequence number, the request\n        // is out of order and MUST be rejected with a 500 (Server Internal\n        // Error) response.  If the remote sequence number was not empty, and\n        // the sequence number of the request is greater than the remote\n        // sequence number, the request is in order.  It is possible for the\n        // CSeq sequence number to be higher than the remote sequence number by\n        // more than one.  This is not an error condition, and a UAS SHOULD be\n        // prepared to receive and process requests with CSeq values more than\n        // one higher than the previous received request.  The UAS MUST then set\n        // the remote sequence number to the value of the sequence number in the\n        // CSeq header field value in the request.\n        //\n        //    If a proxy challenges a request generated by the UAC, the UAC has\n        //    to resubmit the request with credentials.  The resubmitted request\n        //    will have a new CSeq number.  The UAS will never see the first\n        //    request, and thus, it will notice a gap in the CSeq number space.\n        //    Such a gap does not represent any error condition.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (this.remoteSequenceNumber) {\n            if (message.cseq <= this.remoteSequenceNumber) {\n                throw new Error(\"Out of sequence in dialog request. Did you forget to call sequenceGuard()?\");\n            }\n            this.dialogState.remoteSequenceNumber = message.cseq;\n        }\n        // If the remote sequence number is empty, it MUST be set to the value\n        // of the sequence number in the CSeq header field value in the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.remoteSequenceNumber) {\n            this.dialogState.remoteSequenceNumber = message.cseq;\n        }\n        // When a UAS receives a target refresh request, it MUST replace the\n        // dialog's remote target URI with the URI from the Contact header field\n        // in that request, if present.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        // Note: \"target refresh request\" processing delegated to sub-class.\n    }\n    /**\n     * If the dialog identifier in the 2xx response matches the dialog\n     * identifier of an existing dialog, the dialog MUST be transitioned to\n     * the \"confirmed\" state, and the route set for the dialog MUST be\n     * recomputed based on the 2xx response using the procedures of Section\n     * 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n     * constructed using the procedures of Section 12.1.2.\n     *\n     * Note that the only piece of state that is recomputed is the route\n     * set.  Other pieces of state such as the highest sequence numbers\n     * (remote and local) sent within the dialog are not recomputed.  The\n     * route set only is recomputed for backwards compatibility.  RFC\n     * 2543 did not mandate mirroring of the Record-Route header field in\n     * a 1xx, only 2xx.  However, we cannot update the entire state of\n     * the dialog, since mid-dialog requests may have been sent within\n     * the early dialog, modifying the sequence numbers, for example.\n     *\n     *  https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     */\n    recomputeRouteSet(message) {\n        this.dialogState.routeSet = message.getHeaders(\"record-route\").reverse();\n    }\n    /**\n     * A request within a dialog is constructed by using many of the\n     * components of the state stored as part of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n     * @param method - Outgoing request method.\n     */\n    createOutgoingRequestMessage(method, options) {\n        // The URI in the To field of the request MUST be set to the remote URI\n        // from the dialog state.  The tag in the To header field of the request\n        // MUST be set to the remote tag of the dialog ID.  The From URI of the\n        // request MUST be set to the local URI from the dialog state.  The tag\n        // in the From header field of the request MUST be set to the local tag\n        // of the dialog ID.  If the value of the remote or local tags is null,\n        // the tag parameter MUST be omitted from the To or From header fields,\n        // respectively.\n        //\n        //    Usage of the URI from the To and From fields in the original\n        //    request within subsequent requests is done for backwards\n        //    compatibility with RFC 2543, which used the URI for dialog\n        //    identification.  In this specification, only the tags are used for\n        //    dialog identification.  It is expected that mandatory reflection\n        //    of the original To and From URI in mid-dialog requests will be\n        //    deprecated in a subsequent revision of this specification.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const toUri = this.remoteURI;\n        const toTag = this.remoteTag;\n        const fromUri = this.localURI;\n        const fromTag = this.localTag;\n        // The Call-ID of the request MUST be set to the Call-ID of the dialog.\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.  If the local sequence number is\n        // empty, an initial value MUST be chosen using the guidelines of\n        // Section 8.1.1.5.  The method field in the CSeq header field value\n        // MUST match the method of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const callId = this.callId;\n        let cseq;\n        if (options && options.cseq) {\n            cseq = options.cseq;\n        }\n        else if (!this.dialogState.localSequenceNumber) {\n            cseq = this.dialogState.localSequenceNumber = 1; // https://tools.ietf.org/html/rfc3261#section-8.1.1.5\n        }\n        else {\n            cseq = this.dialogState.localSequenceNumber += 1;\n        }\n        // The UAC uses the remote target and route set to build the Request-URI\n        // and Route header field of the request.\n        //\n        // If the route set is empty, the UAC MUST place the remote target URI\n        // into the Request-URI.  The UAC MUST NOT add a Route header field to\n        // the request.\n        //\n        // If the route set is not empty, and the first URI in the route set\n        // contains the lr parameter (see Section 19.1.1), the UAC MUST place\n        // the remote target URI into the Request-URI and MUST include a Route\n        // header field containing the route set values in order, including all\n        // parameters.\n        //\n        // If the route set is not empty, and its first URI does not contain the\n        // lr parameter, the UAC MUST place the first URI from the route set\n        // into the Request-URI, stripping any parameters that are not allowed\n        // in a Request-URI.  The UAC MUST add a Route header field containing\n        // the remainder of the route set values in order, including all\n        // parameters.  The UAC MUST then place the remote target URI into the\n        // Route header field as the last value.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        // The lr parameter, when present, indicates that the element\n        // responsible for this resource implements the routing mechanisms\n        // specified in this document.  This parameter will be used in the\n        // URIs proxies place into Record-Route header field values, and\n        // may appear in the URIs in a pre-existing route set.\n        //\n        // This parameter is used to achieve backwards compatibility with\n        // systems implementing the strict-routing mechanisms of RFC 2543\n        // and the rfc2543bis drafts up to bis-05.  An element preparing\n        // to send a request based on a URI not containing this parameter\n        // can assume the receiving element implements strict-routing and\n        // reformat the message to preserve the information in the\n        // Request-URI.\n        // https://tools.ietf.org/html/rfc3261#section-19.1.1\n        // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n        const ruri = this.remoteTarget;\n        const routeSet = this.routeSet;\n        const extraHeaders = options && options.extraHeaders;\n        const body = options && options.body;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        const message = this.userAgentCore.makeOutgoingRequestMessage(method, ruri, fromUri, toUri, {\n            callId,\n            cseq,\n            fromTag,\n            toTag,\n            routeSet\n        }, extraHeaders, body);\n        return message;\n    }\n    /**\n     * Increment the local sequence number by one.\n     * It feels like this should be protected, but the current authentication handling currently\n     * needs this to keep the dialog in sync when \"auto re-sends\" request messages.\n     * @internal\n     */\n    incrementLocalSequenceNumber() {\n        if (!this.dialogState.localSequenceNumber) {\n            throw new Error(\"Local sequence number undefined.\");\n        }\n        this.dialogState.localSequenceNumber += 1;\n    }\n    /**\n     * If the remote sequence number was not empty, but the sequence number\n     * of the request is lower than the remote sequence number, the request\n     * is out of order and MUST be rejected with a 500 (Server Internal\n     * Error) response.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param request - Incoming request to guard.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise a 500 Server Internal Error was stateless sent and request processing must stop.\n     */\n    sequenceGuard(message) {\n        // ACK guard.\n        // By convention, handling of unexpected ACKs is responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, we cannot reply to an \"out of sequence\" ACK.\n        if (message.method === C.ACK) {\n            return true;\n        }\n        // Note: We are rejecting on \"less than or equal to\" the remote\n        // sequence number (excepting ACK whose numbers equal the requests\n        // being acknowledged or cancelled), which is the correct thing to\n        // do in our case. The only time a request with the same sequence number\n        // will show up here if is a) it is a very late retransmission of a\n        // request we already handled or b) it is a different request with the\n        // same sequence number which would be violation of the standard.\n        // Request retransmissions are absorbed by the transaction layer,\n        // so any request with a duplicate sequence number getting here\n        // would have to be a retransmission after the transaction terminated\n        // or a broken request (with unique via branch value).\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        if (this.remoteSequenceNumber && message.cseq <= this.remoteSequenceNumber) {\n            this.core.replyStateless(message, { statusCode: 500 });\n            return false;\n        }\n        return true;\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { getBody, isBody } from \"../messages/body.js\";\nimport { C } from \"../messages/methods/constants.js\";\nimport { IncomingRequestMessage } from \"../messages/incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"../messages/incoming-response-message.js\";\nimport { OutgoingRequestMessage } from \"../messages/outgoing-request-message.js\";\nimport { SessionState } from \"../session/session.js\";\nimport { SignalingState } from \"../session/session.js\";\nimport { Timers } from \"../timers.js\";\nimport { InviteClientTransaction } from \"../transactions/invite-client-transaction.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\nimport { ByeUserAgentClient } from \"../user-agents/bye-user-agent-client.js\";\nimport { ByeUserAgentServer } from \"../user-agents/bye-user-agent-server.js\";\nimport { InfoUserAgentClient } from \"../user-agents/info-user-agent-client.js\";\nimport { InfoUserAgentServer } from \"../user-agents/info-user-agent-server.js\";\nimport { MessageUserAgentClient } from \"../user-agents/message-user-agent-client.js\";\nimport { MessageUserAgentServer } from \"../user-agents/message-user-agent-server.js\";\nimport { NotifyUserAgentClient } from \"../user-agents/notify-user-agent-client.js\";\nimport { NotifyUserAgentServer } from \"../user-agents/notify-user-agent-server.js\";\nimport { PrackUserAgentClient } from \"../user-agents/prack-user-agent-client.js\";\nimport { PrackUserAgentServer } from \"../user-agents/prack-user-agent-server.js\";\nimport { ReInviteUserAgentClient } from \"../user-agents/re-invite-user-agent-client.js\";\nimport { ReInviteUserAgentServer } from \"../user-agents/re-invite-user-agent-server.js\";\nimport { ReferUserAgentClient } from \"../user-agents/refer-user-agent-client.js\";\nimport { ReferUserAgentServer } from \"../user-agents/refer-user-agent-server.js\";\nimport { Dialog } from \"./dialog.js\";\n/**\n * Session Dialog.\n * @public\n */\nexport class SessionDialog extends Dialog {\n    constructor(initialTransaction, core, state, delegate) {\n        super(core, state);\n        this.initialTransaction = initialTransaction;\n        /** The state of the offer/answer exchange. */\n        this._signalingState = SignalingState.Initial;\n        /** True if waiting for an ACK to the initial transaction 2xx (UAS only). */\n        this.ackWait = false;\n        /** True if processing an ACK to the initial transaction 2xx (UAS only). */\n        this.ackProcessing = false;\n        this.delegate = delegate;\n        if (initialTransaction instanceof InviteServerTransaction) {\n            // If we're created by an invite server transaction, we're\n            // going to be waiting for an ACK if are to be confirmed.\n            this.ackWait = true;\n        }\n        // If we're confirmed upon creation start the retransmitting whatever\n        // the 2xx final response was that confirmed us into existence.\n        if (!this.early) {\n            this.start2xxRetransmissionTimer();\n        }\n        this.signalingStateTransition(initialTransaction.request);\n        this.logger = core.loggerFactory.getLogger(\"sip.invite-dialog\");\n        this.logger.log(`INVITE dialog ${this.id} constructed`);\n    }\n    dispose() {\n        super.dispose();\n        this._signalingState = SignalingState.Closed;\n        this._offer = undefined;\n        this._answer = undefined;\n        if (this.invite2xxTimer) {\n            clearTimeout(this.invite2xxTimer);\n            this.invite2xxTimer = undefined;\n        }\n        // The UAS MUST still respond to any pending requests received for that\n        // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n        // be generated to those pending requests.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.2\n        // TODO:\n        // this.userAgentServers.forEach((uas) => uas.reply(487));\n        this.logger.log(`INVITE dialog ${this.id} destroyed`);\n    }\n    // FIXME: Need real state machine\n    get sessionState() {\n        if (this.early) {\n            return SessionState.Early;\n        }\n        else if (this.ackWait) {\n            return SessionState.AckWait;\n        }\n        else if (this._signalingState === SignalingState.Closed) {\n            return SessionState.Terminated;\n        }\n        else {\n            return SessionState.Confirmed;\n        }\n    }\n    /** The state of the offer/answer exchange. */\n    get signalingState() {\n        return this._signalingState;\n    }\n    /** The current offer. Undefined unless signaling state HaveLocalOffer, HaveRemoteOffer, of Stable. */\n    get offer() {\n        return this._offer;\n    }\n    /** The current answer. Undefined unless signaling state Stable. */\n    get answer() {\n        return this._answer;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */\n    confirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.early) {\n            this.start2xxRetransmissionTimer();\n        }\n        super.confirm();\n    }\n    /** Re-confirm the dialog. Only matters if handling re-INVITE request. */\n    reConfirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.reinviteUserAgentServer) {\n            this.startReInvite2xxRetransmissionTimer();\n        }\n    }\n    /**\n     * The UAC core MUST generate an ACK request for each 2xx received from\n     * the transaction layer.  The header fields of the ACK are constructed\n     * in the same way as for any request sent within a dialog (see Section\n     * 12) with the exception of the CSeq and the header fields related to\n     * authentication.  The sequence number of the CSeq header field MUST be\n     * the same as the INVITE being acknowledged, but the CSeq method MUST\n     * be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n     * the 2xx contains an offer (based on the rules above), the ACK MUST\n     * carry an answer in its body.  If the offer in the 2xx response is not\n     * acceptable, the UAC core MUST generate a valid answer in the ACK and\n     * then send a BYE immediately.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     * @param options - ACK options bucket.\n     */\n    ack(options = {}) {\n        this.logger.log(`INVITE dialog ${this.id} sending ACK request`);\n        let transaction;\n        if (this.reinviteUserAgentClient) {\n            // We're sending ACK for a re-INVITE\n            if (!(this.reinviteUserAgentClient.transaction instanceof InviteClientTransaction)) {\n                throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            }\n            transaction = this.reinviteUserAgentClient.transaction;\n            this.reinviteUserAgentClient = undefined;\n        }\n        else {\n            // We're sending ACK for the initial INVITE\n            if (!(this.initialTransaction instanceof InviteClientTransaction)) {\n                throw new Error(\"Initial transaction not instance of InviteClientTransaction.\");\n            }\n            transaction = this.initialTransaction;\n        }\n        const message = this.createOutgoingRequestMessage(C.ACK, {\n            cseq: transaction.request.cseq,\n            extraHeaders: options.extraHeaders,\n            body: options.body\n        });\n        transaction.ackResponse(message); // See InviteClientTransaction for details.\n        this.signalingStateTransition(message);\n        return { message };\n    }\n    /**\n     * Terminating a Session\n     *\n     * This section describes the procedures for terminating a session\n     * established by SIP.  The state of the session and the state of the\n     * dialog are very closely related.  When a session is initiated with an\n     * INVITE, each 1xx or 2xx response from a distinct UAS creates a\n     * dialog, and if that response completes the offer/answer exchange, it\n     * also creates a session.  As a result, each session is \"associated\"\n     * with a single dialog - the one which resulted in its creation.  If an\n     * initial INVITE generates a non-2xx final response, that terminates\n     * all sessions (if any) and all dialogs (if any) that were created\n     * through responses to the request.  By virtue of completing the\n     * transaction, a non-2xx final response also prevents further sessions\n     * from being created as a result of the INVITE.  The BYE request is\n     * used to terminate a specific session or attempted session.  In this\n     * case, the specific session is the one with the peer UA on the other\n     * side of the dialog.  When a BYE is received on a dialog, any session\n     * associated with that dialog SHOULD terminate.  A UA MUST NOT send a\n     * BYE outside of a dialog.  The caller's UA MAY send a BYE for either\n     * confirmed or early dialogs, and the callee's UA MAY send a BYE on\n     * confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n     *\n     * However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n     * until it has received an ACK for its 2xx response or until the server\n     * transaction times out.  If no SIP extensions have defined other\n     * application layer states associated with the dialog, the BYE also\n     * terminates the dialog.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-15\n     * FIXME: Make these proper Exceptions...\n     * @param options - BYE options bucket.\n     * @returns\n     * Throws `Error` if callee's UA attempts a BYE on an early dialog.\n     * Throws `Error` if callee's UA attempts a BYE on a confirmed dialog\n     *                while it's waiting on the ACK for its 2xx response.\n     */\n    bye(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending BYE request`);\n        // The caller's UA MAY send a BYE for either\n        // confirmed or early dialogs, and the callee's UA MAY send a BYE on\n        // confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n        //\n        // However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n        // until it has received an ACK for its 2xx response or until the server\n        // transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (this.initialTransaction instanceof InviteServerTransaction) {\n            if (this.early) {\n                // FIXME: TODO: This should throw a proper exception.\n                throw new Error(\"UAS MUST NOT send a BYE on early dialogs.\");\n            }\n            if (this.ackWait && this.initialTransaction.state !== TransactionState.Terminated) {\n                // FIXME: TODO: This should throw a proper exception.\n                throw new Error(\"UAS MUST NOT send a BYE on a confirmed dialog \" +\n                    \"until it has received an ACK for its 2xx response \" +\n                    \"or until the server transaction times out.\");\n            }\n        }\n        // A BYE request is constructed as would any other request within a\n        // dialog, as described in Section 12.\n        //\n        // Once the BYE is constructed, the UAC core creates a new non-INVITE\n        // client transaction, and passes it the BYE request.  The UAC MUST\n        // consider the session terminated (and therefore stop sending or\n        // listening for media) as soon as the BYE request is passed to the\n        // client transaction.  If the response for the BYE is a 481\n        // (Call/Transaction Does Not Exist) or a 408 (Request Timeout) or no\n        // response at all is received for the BYE (that is, a timeout is\n        // returned by the client transaction), the UAC MUST consider the\n        // session and the dialog terminated.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.1\n        return new ByeUserAgentClient(this, delegate, options);\n    }\n    /**\n     * An INFO request can be associated with an Info Package (see\n     * Section 5), or associated with a legacy INFO usage (see Section 2).\n     *\n     * The construction of the INFO request is the same as any other\n     * non-target refresh request within an existing invite dialog usage as\n     * described in Section 12.2 of RFC 3261.\n     * https://tools.ietf.org/html/rfc6086#section-4.2.1\n     * @param options - Options bucket.\n     */\n    info(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INFO request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        return new InfoUserAgentClient(this, delegate, options);\n    }\n    /**\n     * Modifying an Existing Session\n     *\n     * A successful INVITE request (see Section 13) establishes both a\n     * dialog between two user agents and a session using the offer-answer\n     * model.  Section 12 explains how to modify an existing dialog using a\n     * target refresh request (for example, changing the remote target URI\n     * of the dialog).  This section describes how to modify the actual\n     * session.  This modification can involve changing addresses or ports,\n     * adding a media stream, deleting a media stream, and so on.  This is\n     * accomplished by sending a new INVITE request within the same dialog\n     * that established the session.  An INVITE request sent within an\n     * existing dialog is known as a re-INVITE.\n     *\n     *    Note that a single re-INVITE can modify the dialog and the\n     *    parameters of the session at the same time.\n     *\n     * Either the caller or callee can modify an existing session.\n     * https://tools.ietf.org/html/rfc3261#section-14\n     * @param options - Options bucket\n     */\n    invite(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INVITE request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        // Note that a UAC MUST NOT initiate a new INVITE transaction within a\n        // dialog while another INVITE transaction is in progress in either\n        // direction.\n        //\n        //    1. If there is an ongoing INVITE client transaction, the TU MUST\n        //       wait until the transaction reaches the completed or terminated\n        //       state before initiating the new INVITE.\n        //\n        //    2. If there is an ongoing INVITE server transaction, the TU MUST\n        //       wait until the transaction reaches the confirmed or terminated\n        //       state before initiating the new INVITE.\n        //\n        // However, a UA MAY initiate a regular transaction while an INVITE\n        // transaction is in progress.  A UA MAY also initiate an INVITE\n        // transaction while a regular transaction is in progress.\n        // https://tools.ietf.org/html/rfc3261#section-14.1\n        if (this.reinviteUserAgentClient) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"There is an ongoing re-INVITE client transaction.\");\n        }\n        if (this.reinviteUserAgentServer) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"There is an ongoing re-INVITE server transaction.\");\n        }\n        return new ReInviteUserAgentClient(this, delegate, options);\n    }\n    /**\n     * A UAC MAY associate a MESSAGE request with an existing dialog.  If a\n     * MESSAGE request is sent within a dialog, it is \"associated\" with any\n     * media session or sessions associated with that dialog.\n     * https://tools.ietf.org/html/rfc3428#section-4\n     * @param options - Options bucket.\n     */\n    message(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending MESSAGE request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        const message = this.createOutgoingRequestMessage(C.MESSAGE, options);\n        return new MessageUserAgentClient(this.core, message, delegate);\n    }\n    /**\n     * The NOTIFY mechanism defined in [2] MUST be used to inform the agent\n     * sending the REFER of the status of the reference.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.4\n     * @param options - Options bucket.\n     */\n    notify(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending NOTIFY request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        return new NotifyUserAgentClient(this, delegate, options);\n    }\n    /**\n     * Assuming the response is to be transmitted reliably, the UAC MUST\n     * create a new request with method PRACK.  This request is sent within\n     * the dialog associated with the provisional response (indeed, the\n     * provisional response may have created the dialog).  PRACK requests\n     * MAY contain bodies, which are interpreted according to their type and\n     * disposition.\n     * https://tools.ietf.org/html/rfc3262#section-4\n     * @param options - Options bucket.\n     */\n    prack(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending PRACK request`);\n        return new PrackUserAgentClient(this, delegate, options);\n    }\n    /**\n     * REFER is a SIP request and is constructed as defined in [1].  A REFER\n     * request MUST contain exactly one Refer-To header field value.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.1\n     * @param options - Options bucket.\n     */\n    refer(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending REFER request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        // FIXME: TODO: Validate Refer-To header field value.\n        return new ReferUserAgentClient(this, delegate, options);\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */\n    receiveRequest(message) {\n        this.logger.log(`INVITE dialog ${this.id} received ${message.method} request`);\n        // Response retransmissions cease when an ACK request for the\n        // response is received.  This is independent of whatever transport\n        // protocols are used to send the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.1\n        if (message.method === C.ACK) {\n            // If ackWait is true, then this is the ACK to the initial INVITE,\n            // otherwise this is an ACK to an in dialog INVITE. In either case,\n            // guard to make sure the sequence number of the ACK matches the INVITE.\n            if (this.ackWait) {\n                if (this.initialTransaction instanceof InviteClientTransaction) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.initialTransaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                // Update before the delegate has a chance to handle the\n                // message as delegate may callback into this dialog.\n                this.ackWait = false;\n            }\n            else {\n                if (!this.reinviteUserAgentServer) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.reinviteUserAgentServer.transaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                this.reinviteUserAgentServer = undefined;\n            }\n            this.signalingStateTransition(message);\n            if (this.delegate && this.delegate.onAck) {\n                const promiseOrVoid = this.delegate.onAck({ message });\n                if (promiseOrVoid instanceof Promise) {\n                    this.ackProcessing = true; // make sure this is always reset to false\n                    promiseOrVoid.then(() => (this.ackProcessing = false)).catch(() => (this.ackProcessing = false));\n                }\n            }\n            return;\n        }\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`INVITE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Handle various INVITE related cross-over, glare and race conditions\n        if (message.method === C.INVITE) {\n            // Hopefully this message is helpful...\n            const warning = () => {\n                const reason = this.ackWait ? \"waiting for initial ACK\" : \"processing initial ACK\";\n                this.logger.warn(`INVITE dialog ${this.id} received re-INVITE while ${reason}`);\n                let msg = \"RFC 5407 suggests the following to avoid this race condition... \";\n                msg += \" Note: Implementation issues are outside the scope of this document,\";\n                msg += \" but the following tip is provided for avoiding race conditions of\";\n                msg += \" this type.  The caller can delay sending re-INVITE F6 for some period\";\n                msg += \" of time (2 seconds, perhaps), after which the caller can reasonably\";\n                msg += \" assume that its ACK has been received.  Implementors can decouple the\";\n                msg += \" actions of the user (e.g., pressing the hold button) from the actions\";\n                msg += \" of the protocol (the sending of re-INVITE F6), so that the UA can\";\n                msg += \" behave like this.  In this case, it is the implementor's choice as to\";\n                msg += \" how long to wait.  In most cases, such an implementation may be\";\n                msg += \" useful to prevent the type of race condition shown in this section.\";\n                msg += \" This document expresses no preference about whether or not they\";\n                msg += \" should wait for an ACK to be delivered.  After considering the impact\";\n                msg += \" on user experience, implementors should decide whether or not to wait\";\n                msg += \" for a while, because the user experience depends on the\";\n                msg += \" implementation and has no direct bearing on protocol behavior.\";\n                this.logger.warn(msg);\n                return; // drop re-INVITE request message\n            };\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            const retryAfter = Math.floor(Math.random() * 10) + 1;\n            const extraHeaders = [`Retry-After: ${retryAfter}`];\n            // There may be ONLY ONE offer/answer negotiation in progress for a\n            // single dialog at any point in time.  Section 4 explains how to ensure\n            // this.\n            // https://tools.ietf.org/html/rfc6337#section-2.2\n            if (this.ackProcessing) {\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, { statusCode: 500, extraHeaders });\n                warning();\n                return;\n            }\n            // 3.1.4.  Callee Receives re-INVITE (Established State)  While in the\n            // Moratorium State (Case 1)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.4\n            // 3.1.5.  Callee Receives re-INVITE (Established State) While in the\n            // Moratorium State (Case 2)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.5\n            if (this.ackWait && this.signalingState !== SignalingState.Stable) {\n                // This scenario is basically the same as that of Section 3.1.4, but\n                // differs in sending an offer in the 200 and an answer in the ACK.  In\n                // contrast to the previous case, the offer in the 200 (F3) and the\n                // offer in the re-INVITE (F6) collide with each other.\n                //\n                // Bob sends a 491 to the re-INVITE (F6) since he is not able to\n                // properly handle a new request until he receives an answer.  (Note:\n                // 500 with a Retry-After header may be returned if the 491 response is\n                // understood to indicate request collision.  However, 491 is\n                // recommended here because 500 applies to so many cases that it is\n                // difficult to determine what the real problem was.)\n                // https://tools.ietf.org/html/rfc5407#section-3.1.5\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, { statusCode: 500, extraHeaders });\n                warning();\n                return;\n            }\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentServer) {\n                this.core.replyStateless(message, { statusCode: 500, extraHeaders });\n                return;\n            }\n            // A UAS that receives an INVITE on a dialog while an INVITE it had sent\n            // on that dialog is in progress MUST return a 491 (Request Pending)\n            // response to the received INVITE.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentClient) {\n                this.core.replyStateless(message, { statusCode: 491 });\n                return;\n            }\n        }\n        // Requests within a dialog MAY contain Record-Route and Contact header\n        // fields.  However, these requests do not cause the dialog's route set\n        // to be modified, although they may modify the remote target URI.\n        // Specifically, requests that are not target refresh requests do not\n        // modify the dialog's remote target URI, and requests that are target\n        // refresh requests do.  For dialogs that have been established with an\n        // INVITE, the only target refresh request defined is re-INVITE (see\n        // Section 14).  Other extensions may define different target refresh\n        // requests for dialogs established in other ways.\n        //\n        //    Note that an ACK is NOT a target refresh request.\n        //\n        // Target refresh requests only update the dialog's remote target URI,\n        // and not the route set formed from the Record-Route.  Updating the\n        // latter would introduce severe backwards compatibility problems with\n        // RFC 2543-compliant systems.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (message.method === C.INVITE) {\n            // FIXME: parser needs to be typed...\n            const contact = message.parseHeader(\"contact\");\n            if (!contact) {\n                // TODO: Review to make sure this will never happen\n                throw new Error(\"Contact undefined.\");\n            }\n            if (!(contact instanceof NameAddrHeader)) {\n                throw new Error(\"Contact not instance of NameAddrHeader.\");\n            }\n            this.dialogState.remoteTarget = contact.uri;\n        }\n        // Switch on method and then delegate.\n        switch (message.method) {\n            case C.BYE:\n                // A UAS core receiving a BYE request for an existing dialog MUST follow\n                // the procedures of Section 12.2.2 to process the request.  Once done,\n                // the UAS SHOULD terminate the session (and therefore stop sending and\n                // listening for media).  The only case where it can elect not to are\n                // multicast sessions, where participation is possible even if the other\n                // participant in the dialog has terminated its involvement in the\n                // session.  Whether or not it ends its participation on the session,\n                // the UAS core MUST generate a 2xx response to the BYE, and MUST pass\n                // that to the server transaction for transmission.\n                //\n                // The UAS MUST still respond to any pending requests received for that\n                // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n                // be generated to those pending requests.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                {\n                    const uas = new ByeUserAgentServer(this, message);\n                    this.delegate && this.delegate.onBye ? this.delegate.onBye(uas) : uas.accept();\n                    this.dispose();\n                }\n                break;\n            case C.INFO:\n                // If a UA receives an INFO request associated with an Info Package that\n                // the UA has not indicated willingness to receive, the UA MUST send a\n                // 469 (Bad Info Package) response (see Section 11.6), which contains a\n                // Recv-Info header field with Info Packages for which the UA is willing\n                // to receive INFO requests.\n                {\n                    const uas = new InfoUserAgentServer(this, message);\n                    this.delegate && this.delegate.onInfo\n                        ? this.delegate.onInfo(uas)\n                        : uas.reject({\n                            statusCode: 469,\n                            extraHeaders: [\"Recv-Info:\"]\n                        });\n                }\n                break;\n            case C.INVITE:\n                // If the new session description is not acceptable, the UAS can reject\n                // it by returning a 488 (Not Acceptable Here) response for the re-\n                // INVITE.  This response SHOULD include a Warning header field.\n                // https://tools.ietf.org/html/rfc3261#section-14.2\n                {\n                    const uas = new ReInviteUserAgentServer(this, message);\n                    this.signalingStateTransition(message);\n                    this.delegate && this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject({ statusCode: 488 }); // TODO: Warning header field.\n                }\n                break;\n            case C.MESSAGE:\n                {\n                    const uas = new MessageUserAgentServer(this.core, message);\n                    this.delegate && this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case C.NOTIFY:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.4\n                {\n                    const uas = new NotifyUserAgentServer(this, message);\n                    this.delegate && this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.accept();\n                }\n                break;\n            case C.PRACK:\n                // https://tools.ietf.org/html/rfc3262#section-4\n                {\n                    const uas = new PrackUserAgentServer(this, message);\n                    this.delegate && this.delegate.onPrack ? this.delegate.onPrack(uas) : uas.accept();\n                }\n                break;\n            case C.REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new ReferUserAgentServer(this, message);\n                    this.delegate && this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject();\n                }\n                break;\n            default:\n                {\n                    this.logger.log(`INVITE dialog ${this.id} received unimplemented ${message.method} request`);\n                    this.core.replyStateless(message, { statusCode: 501 });\n                }\n                break;\n        }\n    }\n    /**\n     * Guard against out of order reliable provisional responses and retransmissions.\n     * Returns false if the response should be discarded, otherwise true.\n     * @param message - Incoming response message within this dialog.\n     */\n    reliableSequenceGuard(message) {\n        const statusCode = message.statusCode;\n        if (!statusCode) {\n            throw new Error(\"Status code undefined\");\n        }\n        if (statusCode > 100 && statusCode < 200) {\n            // If a provisional response is received for an initial request, and\n            // that response contains a Require header field containing the option\n            // tag 100rel, the response is to be sent reliably.  If the response is\n            // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n            // ignored, and the procedures below MUST NOT be used.\n            // https://tools.ietf.org/html/rfc3262#section-4\n            const requireHeader = message.getHeader(\"require\");\n            const rseqHeader = message.getHeader(\"rseq\");\n            const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n            if (rseq) {\n                // Handling of subsequent reliable provisional responses for the same\n                // initial request follows the same rules as above, with the following\n                // difference: reliable provisional responses are guaranteed to be in\n                // order.  As a result, if the UAC receives another reliable provisional\n                // response to the same request, and its RSeq value is not one higher\n                // than the value of the sequence number, that response MUST NOT be\n                // acknowledged with a PRACK, and MUST NOT be processed further by the\n                // UAC.  An implementation MAY discard the response, or MAY cache the\n                // response in the hopes of receiving the missing responses.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                if (this.rseq && this.rseq + 1 !== rseq) {\n                    return false;\n                }\n                // Once a reliable provisional response is received, retransmissions of\n                // that response MUST be discarded.  A response is a retransmission when\n                // its dialog ID, CSeq, and RSeq match the original response.  The UAC\n                // MUST maintain a sequence number that indicates the most recently\n                // received in-order reliable provisional response for the initial\n                // request.  This sequence number MUST be maintained until a final\n                // response is received for the initial request.  Its value MUST be\n                // initialized to the RSeq header field in the first reliable\n                // provisional response received for the initial request.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                this.rseq = this.rseq ? this.rseq + 1 : rseq;\n            }\n        }\n        return true;\n    }\n    /**\n     * If not in a stable signaling state, rollback to prior stable signaling state.\n     */\n    signalingStateRollback() {\n        if (this._signalingState === SignalingState.HaveLocalOffer ||\n            this.signalingState === SignalingState.HaveRemoteOffer) {\n            if (this._rollbackOffer && this._rollbackAnswer) {\n                this._signalingState = SignalingState.Stable;\n                this._offer = this._rollbackOffer;\n                this._answer = this._rollbackAnswer;\n            }\n        }\n    }\n    /**\n     * Update the signaling state of the dialog.\n     * @param message - The message to base the update off of.\n     */\n    signalingStateTransition(message) {\n        const body = getBody(message);\n        // No body, no session. No, woman, no cry.\n        if (!body || body.contentDisposition !== \"session\") {\n            return;\n        }\n        // We've got an existing offer and answer which we may wish to rollback to\n        if (this._signalingState === SignalingState.Stable) {\n            this._rollbackOffer = this._offer;\n            this._rollbackAnswer = this._answer;\n        }\n        // We're in UAS role, receiving incoming request with session description\n        if (message instanceof IncomingRequestMessage) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveRemoteOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n        // We're in UAC role, receiving incoming response with session description\n        if (message instanceof IncomingResponseMessage) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveRemoteOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n        // We're in UAC role, sending outgoing request with session description\n        if (message instanceof OutgoingRequestMessage) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveLocalOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n        // We're in UAS role, sending outgoing response with session description\n        if (isBody(message)) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveLocalOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n    }\n    start2xxRetransmissionTimer() {\n        if (this.initialTransaction instanceof InviteServerTransaction) {\n            const transaction = this.initialTransaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = Timers.T1;\n            const retransmission = () => {\n                if (!this.ackWait) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, Timers.T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = () => {\n                if (transaction.state === TransactionState.Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    if (this.ackWait) {\n                        if (this.delegate && this.delegate.onAckTimeout) {\n                            this.delegate.onAckTimeout();\n                        }\n                        else {\n                            this.bye();\n                        }\n                    }\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n    // FIXME: Refactor\n    startReInvite2xxRetransmissionTimer() {\n        if (this.reinviteUserAgentServer && this.reinviteUserAgentServer.transaction instanceof InviteServerTransaction) {\n            const transaction = this.reinviteUserAgentServer.transaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = Timers.T1;\n            const retransmission = () => {\n                if (!this.reinviteUserAgentServer) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, Timers.T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = () => {\n                if (transaction.state === TransactionState.Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    if (this.reinviteUserAgentServer) {\n                        // FIXME: TODO: What to do here\n                    }\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n}\n","import { Timers } from \"../timers.js\";\nimport { ClientTransaction } from \"./client-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * INVITE Client Transaction.\n * @remarks\n * The INVITE transaction consists of a three-way handshake.  The client\n * transaction sends an INVITE, the server transaction sends responses,\n * and the client transaction sends an ACK.\n * https://tools.ietf.org/html/rfc3261#section-17.1.1\n * @public\n */\nexport class InviteClientTransaction extends ClientTransaction {\n    /**\n     * Constructor.\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1\n     * @param request - The outgoing INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Calling, \"sip.transaction.ict\");\n        /**\n         * Map of 2xx to-tag to ACK.\n         * If value is not undefined, value is the ACK which was sent.\n         * If key exists but value is undefined, a 2xx was received but the ACK not yet sent.\n         * Otherwise, a 2xx was not (yet) received for this transaction.\n         */\n        this.ackRetransmissionCache = new Map();\n        // FIXME: Timer A for unreliable transport not implemented\n        //\n        // If an unreliable transport is being used, the client transaction\n        // MUST start timer A with a value of T1. If a reliable transport is being used,\n        // the client transaction SHOULD NOT start timer A (Timer A controls request retransmissions).\n        // For any transport, the client transaction MUST start timer B with a value\n        // of 64*T1 seconds (Timer B controls transaction timeouts).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n        //\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        this.B = setTimeout(() => this.timerB(), Timers.TIMER_B);\n        this.send(request.toString()).catch((error) => {\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        if (this.D) {\n            clearTimeout(this.D);\n            this.D = undefined;\n        }\n        if (this.M) {\n            clearTimeout(this.M);\n            this.M = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"ict\";\n    }\n    /**\n     * ACK a 2xx final response.\n     *\n     * The transaction includes the ACK only if the final response was not a 2xx response (the\n     * transaction will generate and send the ACK to the transport automagically). If the\n     * final response was a 2xx, the ACK is not considered part of the transaction (the\n     * transaction user needs to generate and send the ACK).\n     *\n     * This library is not strictly RFC compliant with regard to ACK handling for 2xx final\n     * responses. Specifically, retransmissions of ACKs to a 2xx final responses is handled\n     * by the transaction layer (instead of the UAC core). The \"standard\" approach is for\n     * the UAC core to receive all 2xx responses and manage sending ACK retransmissions to\n     * the transport directly. Herein the transaction layer manages sending ACKs to 2xx responses\n     * and any retransmissions of those ACKs as needed.\n     *\n     * @param ack - The outgoing ACK request.\n     */\n    ackResponse(ack) {\n        const toTag = ack.toTag;\n        if (!toTag) {\n            throw new Error(\"To tag undefined.\");\n        }\n        const id = \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n        ack.setViaHeader(id, this.transport.protocol);\n        this.ackRetransmissionCache.set(toTag, ack); // Add to ACK retransmission cache\n        this.send(ack.toString()).catch((error) => {\n            this.logTransportError(error, \"Failed to send ACK to 2xx response.\");\n        });\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */\n    receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        switch (this.state) {\n            case TransactionState.Calling:\n                // If the client transaction receives a provisional response while in\n                // the \"Calling\" state, it transitions to the \"Proceeding\" state. In the\n                // \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition(TransactionState.Proceeding);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or\n                // \"Proceeding\" states, the client transaction MUST transition to\n                // the \"Accepted\" state... The 2xx response MUST be passed up to the TU.\n                // The client transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition(TransactionState.Accepted);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Proceeding:\n                // In the \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or \"Proceeding\" states,\n                // the client transaction MUST transition to the \"Accepted\" state...\n                // The 2xx response MUST be passed up to the TU. The client\n                // transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition(TransactionState.Accepted);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Accepted:\n                // The purpose of the \"Accepted\" state is to allow the client\n                // transaction to continue to exist to receive, and pass to the TU,\n                // any retransmissions of the 2xx response and any additional 2xx\n                // responses from other branches of the INVITE if it forked\n                // downstream. Timer M reflects the amount of time that the\n                // transaction user will wait for such messages.\n                //\n                // Any 2xx responses that match this client transaction and that are\n                // received while in the \"Accepted\" state MUST be passed up to the\n                // TU. The client transaction MUST NOT generate an ACK to the 2xx\n                // response. The client transaction takes no further action.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    // NOTE: This implementation herein is intentionally not RFC compliant.\n                    // While the first 2xx response for a given branch is passed up to the TU,\n                    // retransmissions of 2xx responses are absorbed and the ACK associated\n                    // with the original response is resent. This approach is taken because\n                    // our current transaction users are not currently in a good position to\n                    // deal with 2xx retransmission. This SHOULD NOT cause any compliance issues - ;)\n                    //\n                    // If we don't have a cache hit, pass the response to the TU.\n                    if (!this.ackRetransmissionCache.has(response.toTag)) {\n                        this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                        if (this.user.receiveResponse) {\n                            this.user.receiveResponse(response);\n                        }\n                        return;\n                    }\n                    // If we have a cache hit, try pulling the ACK from cache and retransmitting it.\n                    const ack = this.ackRetransmissionCache.get(response.toTag);\n                    if (ack) {\n                        this.send(ack.toString()).catch((error) => {\n                            this.logTransportError(error, \"Failed to send retransmission of ACK to 2xx response.\");\n                        });\n                        return;\n                    }\n                    // If an ACK was not found in cache then we have received a retransmitted 2xx\n                    // response before the TU responded to the original response (we don't have an ACK yet).\n                    // So discard this response under the assumption that the TU will eventually\n                    // get us a ACK for the original response.\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // Any retransmissions of a response with status code 300-699 that\n                // are received while in the \"Completed\" state MUST cause the ACK to\n                // be re-passed to the transport layer for retransmission, but the\n                // newly received response MUST NOT be passed up to the TU.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.ack(response);\n                    return;\n                }\n                break;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        // Any response received that does not match an existing client\n        // transaction state machine is simply dropped. (Implementations are,\n        // of course, free to log or do other implementation-specific things\n        // with such responses, but the implementer should be sure to consider\n        // the impact of large numbers of malicious stray responses.)\n        // https://tools.ietf.org/html/rfc6026#section-7.2\n        const message = `Received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure\n     * has occurred, and the client transaction SHOULD transition directly\n     * to the \"Terminated\" state.  The TU will handle the failover\n     * mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - The error.\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n        this.stateTransition(TransactionState.Terminated, true);\n    }\n    /** For logging. */\n    typeToString() {\n        return \"INVITE client transaction\";\n    }\n    ack(response) {\n        // The ACK request constructed by the client transaction MUST contain\n        // values for the Call-ID, From, and Request-URI that are equal to the\n        // values of those header fields in the request passed to the transport\n        // by the client transaction (call this the \"original request\"). The To\n        // header field in the ACK MUST equal the To header field in the\n        // response being acknowledged, and therefore will usually differ from\n        // the To header field in the original request by the addition of the\n        // tag parameter. The ACK MUST contain a single Via header field, and\n        // this MUST be equal to the top Via header field of the original\n        // request. The CSeq header field in the ACK MUST contain the same\n        // value for the sequence number as was present in the original request,\n        // but the method parameter MUST be equal to \"ACK\".\n        //\n        // If the INVITE request whose response is being acknowledged had Route\n        // header fields, those header fields MUST appear in the ACK. This is\n        // to ensure that the ACK can be routed properly through any downstream\n        // stateless proxies.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.3\n        const ruri = this.request.ruri;\n        const callId = this.request.callId;\n        const cseq = this.request.cseq;\n        const from = this.request.getHeader(\"from\");\n        const to = response.getHeader(\"to\");\n        const via = this.request.getHeader(\"via\");\n        const route = this.request.getHeader(\"route\");\n        if (!from) {\n            throw new Error(\"From undefined.\");\n        }\n        if (!to) {\n            throw new Error(\"To undefined.\");\n        }\n        if (!via) {\n            throw new Error(\"Via undefined.\");\n        }\n        let ack = `ACK ${ruri} SIP/2.0\\r\\n`;\n        if (route) {\n            ack += `Route: ${route}\\r\\n`;\n        }\n        ack += `Via: ${via}\\r\\n`;\n        ack += `To: ${to}\\r\\n`;\n        ack += `From: ${from}\\r\\n`;\n        ack += `Call-ID: ${callId}\\r\\n`;\n        ack += `CSeq: ${cseq} ACK\\r\\n`;\n        ack += `Max-Forwards: 70\\r\\n`;\n        ack += `Content-Length: 0\\r\\n\\r\\n`;\n        // TOOO: \"User-Agent\" header\n        this.send(ack).catch((error) => {\n            this.logTransportError(error, \"Failed to send ACK to non-2xx response.\");\n        });\n        return;\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Calling:\n                invalidStateTransition();\n                break;\n            case TransactionState.Proceeding:\n                if (this.state !== TransactionState.Calling) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Accepted:\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Calling && this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Calling &&\n                    this.state !== TransactionState.Accepted &&\n                    this.state !== TransactionState.Completed) {\n                    if (!dueToTransportError) {\n                        invalidStateTransition();\n                    }\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        if (newState === TransactionState.Proceeding) {\n            // Timers have no effect on \"Proceeding\" state.\n            // In the \"Proceeding\" state, the client transaction\n            // SHOULD NOT retransmit the request any longer.\n            // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n        }\n        // The client transaction MUST start Timer D when it enters the \"Completed\" state\n        // for any reason, with a value of at least 32 seconds for unreliable transports,\n        // and a value of zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === TransactionState.Completed) {\n            this.D = setTimeout(() => this.timerD(), Timers.TIMER_D);\n        }\n        // The client transaction MUST transition to the \"Accepted\" state,\n        // and Timer M MUST be started with a value of 64*T1.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === TransactionState.Accepted) {\n            this.M = setTimeout(() => this.timerM(), Timers.TIMER_M);\n        }\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * When timer A fires, the client transaction MUST retransmit the\n     * request by passing it to the transport layer, and MUST reset the\n     * timer with a value of 2*T1.\n     * When timer A fires 2*T1 seconds later, the request MUST be\n     * retransmitted again (assuming the client transaction is still in this\n     * state). This process MUST continue so that the request is\n     * retransmitted with intervals that double after each transmission.\n     * These retransmissions SHOULD only be done while the client\n     * transaction is in the \"Calling\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */\n    timerA() {\n        // TODO\n    }\n    /**\n     * If the client transaction is still in the \"Calling\" state when timer\n     * B fires, the client transaction SHOULD inform the TU that a timeout\n     * has occurred.  The client transaction MUST NOT generate an ACK.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */\n    timerB() {\n        this.logger.debug(`Timer B expired for INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Calling) {\n            this.onRequestTimeout();\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * If Timer D fires while the client transaction is in the \"Completed\" state,\n     * the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */\n    timerD() {\n        this.logger.debug(`Timer D expired for INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Completed) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * If Timer M fires while the client transaction is in the \"Accepted\"\n     * state, the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */\n    timerM() {\n        this.logger.debug(`Timer M expired for INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Accepted) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * BYE UAC.\n * @public\n */\nexport class ByeUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.BYE, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n        dialog.dispose();\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { IncomingResponseMessage } from \"../messages/incoming-response-message.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\n/**\n * User Agent Client (UAC).\n * @remarks\n * A user agent client is a logical entity\n * that creates a new request, and then uses the client\n * transaction state machinery to send it.  The role of UAC lasts\n * only for the duration of that transaction.  In other words, if\n * a piece of software initiates a request, it acts as a UAC for\n * the duration of that transaction.  If it receives a request\n * later, it assumes the role of a user agent server for the\n * processing of that transaction.\n * https://tools.ietf.org/html/rfc3261#section-6\n * @public\n */\nexport class UserAgentClient {\n    constructor(transactionConstructor, core, message, delegate) {\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.challenged = false;\n        this.stale = false;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-client\");\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */\n    get transaction() {\n        if (!this._transaction) {\n            throw new Error(\"Transaction undefined.\");\n        }\n        return this._transaction;\n    }\n    /**\n     * Since requests other than INVITE are responded to immediately, sending a\n     * CANCEL for a non-INVITE request would always create a race condition.\n     * A CANCEL request SHOULD NOT be sent to cancel a request other than INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-9.1\n     * @param options - Cancel options bucket.\n     */\n    cancel(reason, options = {}) {\n        if (!this.transaction) {\n            throw new Error(\"Transaction undefined.\");\n        }\n        if (!this.message.to) {\n            throw new Error(\"To undefined.\");\n        }\n        if (!this.message.from) {\n            throw new Error(\"From undefined.\");\n        }\n        // The following procedures are used to construct a CANCEL request.  The\n        // Request-URI, Call-ID, To, the numeric part of CSeq, and From header\n        // fields in the CANCEL request MUST be identical to those in the\n        // request being cancelled, including tags.  A CANCEL constructed by a\n        // client MUST have only a single Via header field value matching the\n        // top Via value in the request being cancelled.  Using the same values\n        // for these header fields allows the CANCEL to be matched with the\n        // request it cancels (Section 9.2 indicates how such matching occurs).\n        // However, the method part of the CSeq header field MUST have a value\n        // of CANCEL.  This allows it to be identified and processed as a\n        // transaction in its own right (See Section 17).\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        const message = this.core.makeOutgoingRequestMessage(C.CANCEL, this.message.ruri, this.message.from.uri, this.message.to.uri, {\n            toTag: this.message.toTag,\n            fromTag: this.message.fromTag,\n            callId: this.message.callId,\n            cseq: this.message.cseq\n        }, options.extraHeaders);\n        // TODO: Revisit this.\n        // The CANCEL needs to use the same branch parameter so that\n        // it matches the INVITE transaction, but this is a hacky way to do this.\n        // Or at the very least not well documented. If the the branch parameter\n        // is set on the outgoing request, the transaction will use it.\n        // Otherwise the transaction will make a new one.\n        message.branch = this.message.branch;\n        if (this.message.headers.Route) {\n            message.headers.Route = this.message.headers.Route;\n        }\n        if (reason) {\n            message.setHeader(\"Reason\", reason);\n        }\n        // If no provisional response has been received, the CANCEL request MUST\n        // NOT be sent; rather, the client MUST wait for the arrival of a\n        // provisional response before sending the request. If the original\n        // request has generated a final response, the CANCEL SHOULD NOT be\n        // sent, as it is an effective no-op, since CANCEL has no effect on\n        // requests that have already generated a final response.\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        if (this.transaction.state === TransactionState.Proceeding) {\n            new UserAgentClient(NonInviteClientTransaction, this.core, message);\n        }\n        else {\n            this.transaction.addStateChangeListener(() => {\n                if (this.transaction && this.transaction.state === TransactionState.Proceeding) {\n                    new UserAgentClient(NonInviteClientTransaction, this.core, message);\n                }\n            }, { once: true });\n        }\n        return message;\n    }\n    /**\n     * If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n     * response is received, the UAC SHOULD follow the authorization\n     * procedures of Section 22.2 and Section 22.3 to retry the request with\n     * credentials.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n     * 22 Usage of HTTP Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22\n     * 22.1 Framework\n     * https://tools.ietf.org/html/rfc3261#section-22.1\n     * 22.2 User-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.2\n     * 22.3 Proxy-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.3\n     *\n     * FIXME: This \"guard for and retry the request with credentials\"\n     * implementation is not complete and at best minimally passable.\n     * @param response - The incoming response to guard.\n     * @param dialog - If defined, the dialog within which the response was received.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise the request is retried with credentials and current request processing must stop.\n     */\n    authenticationGuard(message, dialog) {\n        const statusCode = message.statusCode;\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        // If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n        // response is received, the UAC SHOULD follow the authorization\n        // procedures of Section 22.2 and Section 22.3 to retry the request with\n        // credentials.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        if (statusCode !== 401 && statusCode !== 407) {\n            return true;\n        }\n        // Get and parse the appropriate WWW-Authenticate or Proxy-Authenticate header.\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let challenge;\n        let authorizationHeaderName;\n        if (statusCode === 401) {\n            challenge = message.parseHeader(\"www-authenticate\");\n            authorizationHeaderName = \"authorization\";\n        }\n        else {\n            challenge = message.parseHeader(\"proxy-authenticate\");\n            authorizationHeaderName = \"proxy-authorization\";\n        }\n        // Verify it seems a valid challenge.\n        if (!challenge) {\n            this.logger.warn(statusCode + \" with wrong or missing challenge, cannot authenticate\");\n            return true;\n        }\n        // Avoid infinite authentications.\n        if (this.challenged && (this.stale || challenge.stale !== true)) {\n            this.logger.warn(statusCode + \" apparently in authentication loop, cannot authenticate\");\n            return true;\n        }\n        // Get credentials.\n        if (!this.credentials) {\n            this.credentials = this.core.configuration.authenticationFactory();\n            if (!this.credentials) {\n                this.logger.warn(\"Unable to obtain credentials, cannot authenticate\");\n                return true;\n            }\n        }\n        // Verify that the challenge is really valid.\n        if (!this.credentials.authenticate(this.message, challenge)) {\n            return true;\n        }\n        this.challenged = true;\n        if (challenge.stale) {\n            this.stale = true;\n        }\n        // If response to out of dialog request, assume incrementing the CSeq will suffice.\n        let cseq = (this.message.cseq += 1);\n        // If response to in dialog request, get a valid next CSeq number.\n        if (dialog && dialog.localSequenceNumber) {\n            dialog.incrementLocalSequenceNumber();\n            cseq = this.message.cseq = dialog.localSequenceNumber;\n        }\n        this.message.setHeader(\"cseq\", cseq + \" \" + this.message.method);\n        this.message.setHeader(authorizationHeaderName, this.credentials.toString());\n        // Calling init (again) will swap out our existing client transaction with a new one.\n        // FIXME: HACK: An assumption is being made here that there is nothing that needs to\n        // be cleaned up beyond the client transaction which is being replaced. For example,\n        // it is assumed that no early dialogs have been created.\n        this.init();\n        return false;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     */\n    onRequestTimeout() {\n        this.logger.warn(\"User agent client request timed out. Generating internal 408 Request Timeout.\");\n        const message = new IncomingResponseMessage();\n        message.statusCode = 408;\n        message.reasonPhrase = \"Request Timeout\";\n        this.receiveResponse(message);\n        return;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     * @param error - Transport error\n     */\n    onTransportError(error) {\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error. Generating internal 503 Service Unavailable.\");\n        const message = new IncomingResponseMessage();\n        message.statusCode = 503;\n        message.reasonPhrase = \"Service Unavailable\";\n        this.receiveResponse(message);\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message)) {\n            return;\n        }\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        switch (true) {\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) {\n                    this.delegate.onTrying({ message });\n                }\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) {\n                    this.delegate.onProgress({ message });\n                }\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onAccept) {\n                    this.delegate.onAccept({ message });\n                }\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onRedirect) {\n                    this.delegate.onRedirect({ message });\n                }\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onReject) {\n                    this.delegate.onReject({ message });\n                }\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onRequestTimeout: () => this.onRequestTimeout(),\n            onStateChange: (newState) => {\n                if (newState === TransactionState.Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentClients.delete(userAgentClientId);\n                    // FIXME: HACK: Our transaction may have been swapped out with a new one\n                    // post authentication (see above), so make sure to only to dispose of\n                    // ourselves if this terminating transaction is our current transaction.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    if (transaction === this._transaction) {\n                        this.dispose();\n                    }\n                }\n            },\n            onTransportError: (error) => this.onTransportError(error),\n            receiveResponse: (message) => this.receiveResponse(message)\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentClientId = transaction.id + transaction.request.method;\n        this.core.userAgentClients.set(userAgentClientId, this);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * BYE UAS.\n * @public\n */\nexport class ByeUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(NonInviteServerTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { Timers } from \"../timers.js\";\nimport { ServerTransaction } from \"./server-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * Non-INVITE Server Transaction.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-17.2.2\n * @public\n */\nexport class NonInviteServerTransaction extends ServerTransaction {\n    /**\n     * Constructor.\n     * After construction the transaction will be in the \"trying\": state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     * @param request - Incoming Non-INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Trying, \"sip.transaction.nist\");\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.J) {\n            clearTimeout(this.J);\n            this.J = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"nist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    receiveRequest(request) {\n        switch (this.state) {\n            case TransactionState.Trying:\n                // Once in the \"Trying\" state, any further request retransmissions are discarded.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                break;\n            case TransactionState.Proceeding:\n                // If a retransmission of the request is received while in the \"Proceeding\" state,\n                // the most recently sent provisional response MUST be passed to the transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) {\n                    throw new Error(\"Last response undefined.\");\n                }\n                this.send(this.lastResponse).catch((error) => {\n                    this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                });\n                break;\n            case TransactionState.Completed:\n                // While in the \"Completed\" state, the server transaction MUST pass the final response to the transport\n                // layer for retransmission whenever a retransmission of the request is received. Any other final responses\n                // passed by the TU to the server transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) {\n                    throw new Error(\"Last response undefined.\");\n                }\n                this.send(this.lastResponse).catch((error) => {\n                    this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                });\n                break;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response. 101-199 not allowed per RFC 4320.\n     * @param response - Response to send.\n     */\n    receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        // An SIP element MUST NOT send any provisional response with a\n        // Status-Code other than 100 to a non-INVITE request.\n        // An SIP element MUST NOT respond to a non-INVITE request with a\n        // Status-Code of 100 over any unreliable transport, such as UDP,\n        // before the amount of time it takes a client transaction's Timer E to be reset to T2.\n        // An SIP element MAY respond to a non-INVITE request with a\n        // Status-Code of 100 over a reliable transport at any time.\n        // https://tools.ietf.org/html/rfc4320#section-4.1\n        if (statusCode > 100 && statusCode <= 199) {\n            throw new Error(\"Provisional response other than 100 not allowed.\");\n        }\n        switch (this.state) {\n            case TransactionState.Trying:\n                // While in the \"Trying\" state, if the TU passes a provisional response\n                // to the server transaction, the server transaction MUST enter the \"Proceeding\" state.\n                // The response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 100 && statusCode < 200) {\n                    this.stateTransition(TransactionState.Proceeding);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send provisional response.\");\n                    });\n                    return;\n                }\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Proceeding:\n                // Any further provisional responses that are received from the TU while\n                // in the \"Proceeding\" state MUST be passed to the transport layer for transmission.\n                // If the TU passes a final response (status codes 200-699) to the server while in\n                // the \"Proceeding\" state, the transaction MUST enter the \"Completed\" state, and\n                // the response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // Any other final responses passed by the TU to the server\n                // transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                return;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and SHOULD transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.4\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n        this.stateTransition(TransactionState.Terminated, true);\n    }\n    /** For logging. */\n    typeToString() {\n        return \"non-INVITE server transaction\";\n    }\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Trying:\n                invalidStateTransition();\n                break;\n            case TransactionState.Proceeding:\n                if (this.state !== TransactionState.Trying) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Trying && this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Proceeding && this.state !== TransactionState.Completed) {\n                    if (!dueToTransportError) {\n                        invalidStateTransition();\n                    }\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // When the server transaction enters the \"Completed\" state, it MUST set Timer J to fire\n        // in 64*T1 seconds for unreliable transports, and zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === TransactionState.Completed) {\n            this.J = setTimeout(() => this.timerJ(), Timers.TIMER_J);\n        }\n        // The server transaction MUST be destroyed the instant it enters the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        this.setState(newState);\n    }\n    /**\n     * The server transaction remains in this state until Timer J fires,\n     * at which point it MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     */\n    timerJ() {\n        this.logger.debug(`Timer J expired for NON-INVITE server transaction ${this.id}.`);\n        if (this.state === TransactionState.Completed) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { TransactionStateError } from \"../exceptions/transaction-state-error.js\";\nimport { constructOutgoingResponse } from \"../messages/outgoing-response.js\";\nimport { newTag } from \"../messages/utils.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\n/**\n * User Agent Server (UAS).\n * @remarks\n * A user agent server is a logical entity\n * that generates a response to a SIP request.  The response\n * accepts, rejects, or redirects the request.  This role lasts\n * only for the duration of that transaction.  In other words, if\n * a piece of software responds to a request, it acts as a UAS for\n * the duration of that transaction.  If it generates a request\n * later, it assumes the role of a user agent client for the\n * processing of that transaction.\n * https://tools.ietf.org/html/rfc3261#section-6\n * @public\n */\nexport class UserAgentServer {\n    constructor(transactionConstructor, core, message, delegate) {\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-server\");\n        this.toTag = message.toTag ? message.toTag : newTag();\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */\n    get transaction() {\n        if (!this._transaction) {\n            throw new Error(\"Transaction undefined.\");\n        }\n        return this._transaction;\n    }\n    accept(options = { statusCode: 200 }) {\n        if (!this.acceptable) {\n            throw new TransactionStateError(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 200 || statusCode > 299) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const response = this.reply(options);\n        return response;\n    }\n    progress(options = { statusCode: 180 }) {\n        if (!this.progressable) {\n            throw new TransactionStateError(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 101 || statusCode > 199) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const response = this.reply(options);\n        return response;\n    }\n    redirect(contacts, options = { statusCode: 302 }) {\n        if (!this.redirectable) {\n            throw new TransactionStateError(`${this.message.method} not redirectable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 300 || statusCode > 399) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const contactHeaders = new Array();\n        contacts.forEach((contact) => contactHeaders.push(`Contact: ${contact.toString()}`));\n        options.extraHeaders = (options.extraHeaders || []).concat(contactHeaders);\n        const response = this.reply(options);\n        return response;\n    }\n    reject(options = { statusCode: 480 }) {\n        if (!this.rejectable) {\n            throw new TransactionStateError(`${this.message.method} not rejectable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 400 || statusCode > 699) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const response = this.reply(options);\n        return response;\n    }\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    trying(options) {\n        if (!this.tryingable) {\n            throw new TransactionStateError(`${this.message.method} not tryingable in state ${this.transaction.state}.`);\n        }\n        const response = this.reply({ statusCode: 100 });\n        return response;\n    }\n    /**\n     * If the UAS did not find a matching transaction for the CANCEL\n     * according to the procedure above, it SHOULD respond to the CANCEL\n     * with a 481 (Call Leg/Transaction Does Not Exist).  If the transaction\n     * for the original request still exists, the behavior of the UAS on\n     * receiving a CANCEL request depends on whether it has already sent a\n     * final response for the original request.  If it has, the CANCEL\n     * request has no effect on the processing of the original request, no\n     * effect on any session state, and no effect on the responses generated\n     * for the original request.  If the UAS has not issued a final response\n     * for the original request, its behavior depends on the method of the\n     * original request.  If the original request was an INVITE, the UAS\n     * SHOULD immediately respond to the INVITE with a 487 (Request\n     * Terminated).  A CANCEL request has no impact on the processing of\n     * transactions with any other method defined in this specification.\n     * https://tools.ietf.org/html/rfc3261#section-9.2\n     * @param request - Incoming CANCEL request.\n     */\n    receiveCancel(message) {\n        // Note: Currently CANCEL is being handled as a special case.\n        // No UAS is created to handle the CANCEL and the response to\n        // it CANCEL is being handled statelessly by the user agent core.\n        // As such, there is currently no way to externally impact the\n        // response to the a CANCEL request.\n        if (this.delegate && this.delegate.onCancel) {\n            this.delegate.onCancel(message);\n        }\n    }\n    get acceptable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Proceeding || this.transaction.state === TransactionState.Accepted);\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Trying || this.transaction.state === TransactionState.Proceeding);\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get progressable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return false; // https://tools.ietf.org/html/rfc4320#section-4.1\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get redirectable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Trying || this.transaction.state === TransactionState.Proceeding);\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get rejectable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Trying || this.transaction.state === TransactionState.Proceeding);\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get tryingable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return this.transaction.state === TransactionState.Trying;\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    /**\n     * When a UAS wishes to construct a response to a request, it follows\n     * the general procedures detailed in the following subsections.\n     * Additional behaviors specific to the response code in question, which\n     * are not detailed in this section, may also be required.\n     *\n     * Once all procedures associated with the creation of a response have\n     * been completed, the UAS hands the response back to the server\n     * transaction from which it received the request.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.6\n     * @param statusCode - Status code to reply with.\n     * @param options - Reply options bucket.\n     */\n    reply(options) {\n        if (!options.toTag && options.statusCode !== 100) {\n            options.toTag = this.toTag;\n        }\n        options.userAgent = options.userAgent || this.core.configuration.userAgentHeaderFieldValue;\n        options.supported = options.supported || this.core.configuration.supportedOptionTagsResponse;\n        const response = constructOutgoingResponse(this.message, options);\n        this.transaction.receiveResponse(options.statusCode, response.message);\n        return response;\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onStateChange: (newState) => {\n                if (newState === TransactionState.Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentServers.delete(userAgentServerId);\n                    this.dispose();\n                }\n            },\n            onTransportError: (error) => {\n                this.logger.error(error.message);\n                if (this.delegate && this.delegate.onTransportError) {\n                    this.delegate.onTransportError(error);\n                }\n                else {\n                    this.logger.error(\"User agent server response transport error.\");\n                }\n            }\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentServerId = transaction.id;\n        this.core.userAgentServers.set(transaction.id, this);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * INFO UAC.\n * @public\n */\nexport class InfoUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.INFO, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * INFO UAS.\n * @public\n */\nexport class InfoUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(NonInviteServerTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * MESSAGE UAC.\n * @public\n */\nexport class MessageUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(NonInviteClientTransaction, core, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * MESSAGE UAS.\n * @public\n */\nexport class MessageUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(NonInviteServerTransaction, core, message, delegate);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * NOTIFY UAS.\n * @public\n */\nexport class NotifyUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.NOTIFY, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction instanceOfDialog(object) {\n    return object.userAgentCore !== undefined;\n}\n/**\n * NOTIFY UAS.\n * @public\n */\nexport class NotifyUserAgentServer extends UserAgentServer {\n    /**\n     * NOTIFY UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog NOTIFY, UserAgentCore for out of dialog NOTIFY (deprecated).\n     * @param message - Incoming NOTIFY request message.\n     */\n    constructor(dialogOrCore, message, delegate) {\n        const userAgentCore = instanceOfDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super(NonInviteServerTransaction, userAgentCore, message, delegate);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * PRACK UAC.\n * @public\n */\nexport class PrackUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.PRACK, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n        dialog.signalingStateTransition(message);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * PRACK UAS.\n * @public\n */\nexport class PrackUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(NonInviteServerTransaction, dialog.userAgentCore, message, delegate);\n        // Update dialog signaling state with offer/answer in body\n        dialog.signalingStateTransition(message);\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */\n    accept(options = { statusCode: 200 }) {\n        if (options.body) {\n            // Update dialog signaling state with offer/answer in body\n            this.dialog.signalingStateTransition(options.body);\n        }\n        return super.accept(options);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { InviteClientTransaction } from \"../transactions/invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * Re-INVITE UAC.\n * @remarks\n * 14 Modifying an Existing Session\n * https://tools.ietf.org/html/rfc3261#section-14\n * 14.1 UAC Behavior\n * https://tools.ietf.org/html/rfc3261#section-14.1\n * @public\n */\nexport class ReInviteUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.INVITE, options);\n        super(InviteClientTransaction, dialog.userAgentCore, message, delegate);\n        this.delegate = delegate;\n        dialog.signalingStateTransition(message);\n        // FIXME: TODO: next line obviously needs to be improved...\n        dialog.reinviteUserAgentClient = this; // let the dialog know re-invite request sent\n        this.dialog = dialog;\n    }\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message, this.dialog)) {\n            return;\n        }\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        switch (true) {\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) {\n                    this.delegate.onTrying({ message });\n                }\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) {\n                    this.delegate.onProgress({\n                        message,\n                        session: this.dialog,\n                        // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                        prack: (options) => {\n                            throw new Error(\"Unimplemented.\");\n                        }\n                    });\n                }\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Update dialog signaling state with offer/answer in body\n                this.dialog.signalingStateTransition(message);\n                if (this.delegate && this.delegate.onAccept) {\n                    this.delegate.onAccept({\n                        message,\n                        session: this.dialog,\n                        ack: (options) => {\n                            const outgoingAckRequest = this.dialog.ack(options);\n                            return outgoingAckRequest;\n                        }\n                    });\n                }\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onRedirect) {\n                    this.delegate.onRedirect({ message });\n                }\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onReject) {\n                    this.delegate.onReject({ message });\n                }\n                else {\n                    // If a UA receives a non-2xx final response to a re-INVITE, the session\n                    // parameters MUST remain unchanged, as if no re-INVITE had been issued.\n                    // Note that, as stated in Section 12.2.1.2, if the non-2xx final\n                    // response is a 481 (Call/Transaction Does Not Exist), or a 408\n                    // (Request Timeout), or no response at all is received for the re-\n                    // INVITE (that is, a timeout is returned by the INVITE client\n                    // transaction), the UAC will terminate the dialog.\n                    //\n                    // If a UAC receives a 491 response to a re-INVITE, it SHOULD start a\n                    // timer with a value T chosen as follows:\n                    //\n                    //    1. If the UAC is the owner of the Call-ID of the dialog ID\n                    //       (meaning it generated the value), T has a randomly chosen value\n                    //       between 2.1 and 4 seconds in units of 10 ms.\n                    //\n                    //    2. If the UAC is not the owner of the Call-ID of the dialog ID, T\n                    //       has a randomly chosen value of between 0 and 2 seconds in units\n                    //       of 10 ms.\n                    //\n                    // When the timer fires, the UAC SHOULD attempt the re-INVITE once more,\n                    // if it still desires for that session modification to take place.  For\n                    // example, if the call was already hung up with a BYE, the re-INVITE\n                    // would not take place.\n                    // https://tools.ietf.org/html/rfc3261#section-14.1\n                    // FIXME: TODO: The above.\n                }\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n}\n","import { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * Re-INVITE UAS.\n * @remarks\n * 14 Modifying an Existing Session\n * https://tools.ietf.org/html/rfc3261#section-14\n * 14.2 UAS Behavior\n * https://tools.ietf.org/html/rfc3261#section-14.2\n * @public\n */\nexport class ReInviteUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(InviteServerTransaction, dialog.userAgentCore, message, delegate);\n        dialog.reinviteUserAgentServer = this;\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */\n    accept(options = { statusCode: 200 }) {\n        // FIXME: The next two lines SHOULD go away, but I suppose it's technically harmless...\n        // These are here because some versions of SIP.js prior to 0.13.8 set the route set\n        // of all in dialog ACKs based on the Record-Route headers in the associated 2xx\n        // response. While this worked for dialog forming 2xx responses, it was technically\n        // broken for re-INVITE ACKS as it only worked if the UAS populated the Record-Route\n        // headers in the re-INVITE 2xx response (which is not required and a waste of bandwidth\n        // as the should be ignored if present in re-INVITE ACKS) and the UAS populated\n        // the Record-Route headers with the correct values (would be weird not too, but...).\n        // Anyway, for now the technically useless Record-Route headers are being added\n        // to maintain \"backwards compatibility\" with the older broken versions of SIP.js.\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(this.dialog.routeSet.map((route) => `Record-Route: ${route}`));\n        // Send and return the response\n        const response = super.accept(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        if (options.body) {\n            // Update dialog signaling state with offer/answer in body\n            this.dialog.signalingStateTransition(options.body);\n        }\n        // Update dialog\n        this.dialog.reConfirm();\n        return result;\n    }\n    /**\n     * Update the dialog signaling state on a 1xx response.\n     * @param options - Progress options bucket.\n     */\n    progress(options = { statusCode: 180 }) {\n        // Send and return the response\n        const response = super.progress(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        // Update dialog signaling state\n        if (options.body) {\n            this.dialog.signalingStateTransition(options.body);\n        }\n        return result;\n    }\n    /**\n     * TODO: Not Yet Supported\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    redirect(contacts, options = { statusCode: 302 }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * 3.1 Background on Re-INVITE Handling by UASs\n     * An error response to a re-INVITE has the following semantics.  As\n     * specified in Section 12.2.2 of RFC 3261 [RFC3261], if a re-INVITE is\n     * rejected, no state changes are performed.\n     * https://tools.ietf.org/html/rfc6141#section-3.1\n     * @param options - Reject options bucket.\n     */\n    reject(options = { statusCode: 488 }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        return super.reject(options);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * REFER UAC.\n * @public\n */\nexport class ReferUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.REFER, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction instanceOfSessionDialog(object) {\n    return object.userAgentCore !== undefined;\n}\n/**\n * REFER UAS.\n * @public\n */\nexport class ReferUserAgentServer extends UserAgentServer {\n    /**\n     * REFER UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog REFER, UserAgentCore for out of dialog REFER.\n     * @param message - Incoming REFER request message.\n     */\n    constructor(dialogOrCore, message, delegate) {\n        const userAgentCore = instanceOfSessionDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super(NonInviteServerTransaction, userAgentCore, message, delegate);\n    }\n}\n","import { Dialog } from \"../dialogs/dialog.js\";\nimport { SessionDialog } from \"../dialogs/session-dialog.js\";\nimport { TransactionStateError } from \"../exceptions/transaction-state-error.js\";\nimport { SignalingState } from \"../session/session.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { AllowedMethods } from \"../user-agent-core/allowed-methods.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * INVITE UAS.\n * @remarks\n * 13 Initiating a Session\n * https://tools.ietf.org/html/rfc3261#section-13\n * 13.1 Overview\n * https://tools.ietf.org/html/rfc3261#section-13.1\n * 13.3 UAS Processing\n * https://tools.ietf.org/html/rfc3261#section-13.3\n * @public\n */\nexport class InviteUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(InviteServerTransaction, core, message, delegate);\n        this.core = core;\n    }\n    dispose() {\n        if (this.earlyDialog) {\n            this.earlyDialog.dispose();\n        }\n        super.dispose();\n    }\n    /**\n     * 13.3.1.4 The INVITE is Accepted\n     * The UAS core generates a 2xx response.  This response establishes a\n     * dialog, and therefore follows the procedures of Section 12.1.1 in\n     * addition to those of Section 8.2.6.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n     * @param options - Accept options bucket.\n     */\n    accept(options = { statusCode: 200 }) {\n        if (!this.acceptable) {\n            throw new TransactionStateError(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        }\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.confirmedDialog) {\n            if (this.earlyDialog) {\n                this.earlyDialog.confirm();\n                this.confirmedDialog = this.earlyDialog;\n                this.earlyDialog = undefined;\n            }\n            else {\n                const transaction = this.transaction;\n                if (!(transaction instanceof InviteServerTransaction)) {\n                    throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                }\n                const state = Dialog.initialDialogStateForUserAgentServer(this.message, this.toTag);\n                this.confirmedDialog = new SessionDialog(transaction, this.core, state);\n            }\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header) => `Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact.toString()}`;\n        // A 2xx response to an INVITE SHOULD contain the Allow header field and\n        // the Supported header field, and MAY contain the Accept header field.\n        // Including these header fields allows the UAC to determine the\n        // features and extensions supported by the UAS for the duration of the\n        // call, without probing.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        // FIXME: TODO: This should not be hard coded.\n        const allowHeader = \"Allow: \" + AllowedMethods.toString();\n        // FIXME: TODO: Supported header (see reply())\n        // FIXME: TODO: Accept header\n        // If the INVITE request contained an offer, and the UAS had not yet\n        // sent an answer, the 2xx MUST contain an answer.  If the INVITE did\n        // not contain an offer, the 2xx MUST contain an offer if the UAS had\n        // not yet sent an offer.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!options.body) {\n            if (this.confirmedDialog.signalingState === SignalingState.Stable) {\n                options.body = this.confirmedDialog.answer; // resend the answer sent in provisional response\n            }\n            else if (this.confirmedDialog.signalingState === SignalingState.Initial ||\n                this.confirmedDialog.signalingState === SignalingState.HaveRemoteOffer) {\n                throw new Error(\"Response must have a body.\");\n            }\n        }\n        options.statusCode = options.statusCode || 200;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.accept(options);\n        const session = this.confirmedDialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        // Update dialog signaling state\n        if (options.body) {\n            // Once the UAS has sent or received an answer to the initial\n            // offer, it MUST NOT generate subsequent offers in any responses\n            // to the initial INVITE.  This means that a UAS based on this\n            // specification alone can never generate subsequent offers until\n            // completion of the initial transaction.\n            // https://tools.ietf.org/html/rfc3261#section-13.2.1\n            if (this.confirmedDialog.signalingState !== SignalingState.Stable) {\n                this.confirmedDialog.signalingStateTransition(options.body);\n            }\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.1 Progress\n     * If the UAS is not able to answer the invitation immediately, it can\n     * choose to indicate some kind of progress to the UAC (for example, an\n     * indication that a phone is ringing).  This is accomplished with a\n     * provisional response between 101 and 199.  These provisional\n     * responses establish early dialogs and therefore follow the procedures\n     * of Section 12.1.1 in addition to those of Section 8.2.6.  A UAS MAY\n     * send as many provisional responses as it likes.  Each of these MUST\n     * indicate the same dialog ID.  However, these will not be delivered\n     * reliably.\n     *\n     * If the UAS desires an extended period of time to answer the INVITE,\n     * it will need to ask for an \"extension\" in order to prevent proxies\n     * from canceling the transaction.  A proxy has the option of canceling\n     * a transaction when there is a gap of 3 minutes between responses in a\n     * transaction.  To prevent cancellation, the UAS MUST send a non-100\n     * provisional response at every minute, to handle the possibility of\n     * lost provisional responses.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.1\n     * @param options - Progress options bucket.\n     */\n    progress(options = { statusCode: 180 }) {\n        if (!this.progressable) {\n            throw new TransactionStateError(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        }\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.earlyDialog) {\n            const transaction = this.transaction;\n            if (!(transaction instanceof InviteServerTransaction)) {\n                throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            }\n            const state = Dialog.initialDialogStateForUserAgentServer(this.message, this.toTag, true);\n            this.earlyDialog = new SessionDialog(transaction, this.core, state);\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header) => `Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact}`;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.progress(options);\n        const session = this.earlyDialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        // Update dialog signaling state\n        if (options.body) {\n            // Once the UAS has sent or received an answer to the initial\n            // offer, it MUST NOT generate subsequent offers in any responses\n            // to the initial INVITE.  This means that a UAS based on this\n            // specification alone can never generate subsequent offers until\n            // completion of the initial transaction.\n            // https://tools.ietf.org/html/rfc3261#section-13.2.1\n            if (this.earlyDialog.signalingState !== SignalingState.Stable) {\n                this.earlyDialog.signalingStateTransition(options.body);\n            }\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.2 The INVITE is Redirected\n     * If the UAS decides to redirect the call, a 3xx response is sent.  A\n     * 300 (Multiple Choices), 301 (Moved Permanently) or 302 (Moved\n     * Temporarily) response SHOULD contain a Contact header field\n     * containing one or more URIs of new addresses to be tried.  The\n     * response is passed to the INVITE server transaction, which will deal\n     * with its retransmissions.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.2\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */\n    redirect(contacts, options = { statusCode: 302 }) {\n        return super.redirect(contacts, options);\n    }\n    /**\n     * 13.3.1.3 The INVITE is Rejected\n     * A common scenario occurs when the callee is currently not willing or\n     * able to take additional calls at this end system.  A 486 (Busy Here)\n     * SHOULD be returned in such a scenario.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n     * @param options - Reject options bucket.\n     */\n    reject(options = { statusCode: 486 }) {\n        return super.reject(options);\n    }\n}\n","import { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * PUBLISH UAC.\n * @public\n */\nexport class PublishUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(NonInviteClientTransaction, core, message, delegate);\n    }\n}\n","import { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * REGISTER UAC.\n * @public\n */\nexport class RegisterUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(NonInviteClientTransaction, core, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * REGISTER UAS.\n * @public\n */\nexport class RegisterUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(NonInviteServerTransaction, core, message, delegate);\n        this.core = core;\n    }\n}\n","import { SubscriptionDialog } from \"../dialogs/subscription-dialog.js\";\nimport { SubscriptionState } from \"../subscription/subscription.js\";\nimport { Timers } from \"../timers.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * SUBSCRIBE UAC.\n * @remarks\n * 4.1.  Subscriber Behavior\n * https://tools.ietf.org/html/rfc6665#section-4.1\n *\n * User agent client for installation of a single subscription per SUBSCRIBE request.\n * TODO: Support for installation of multiple subscriptions on forked SUBSCRIBE requests.\n * @public\n */\nexport class SubscribeUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        // Get event from request message.\n        const event = message.getHeader(\"Event\");\n        if (!event) {\n            throw new Error(\"Event undefined\");\n        }\n        // Get expires from request message.\n        const expires = message.getHeader(\"Expires\");\n        if (!expires) {\n            throw new Error(\"Expires undefined\");\n        }\n        super(NonInviteClientTransaction, core, message, delegate);\n        this.delegate = delegate;\n        // FIXME: Subscriber id should also be matching on event id.\n        this.subscriberId = message.callId + message.fromTag + event;\n        this.subscriptionExpiresRequested = this.subscriptionExpires = Number(expires);\n        this.subscriptionEvent = event;\n        this.subscriptionState = SubscriptionState.NotifyWait;\n        // Start waiting for a NOTIFY we can use to create a subscription.\n        this.waitNotifyStart();\n    }\n    /**\n     * Destructor.\n     * Note that Timer N may live on waiting for an initial NOTIFY and\n     * the delegate may still receive that NOTIFY. If you don't want\n     * that behavior then either clear the delegate so the delegate\n     * doesn't get called (a 200 will be sent in response to the NOTIFY)\n     * or call `waitNotifyStop` which will clear Timer N and remove this\n     * UAC from the core (a 481 will be sent in response to the NOTIFY).\n     */\n    dispose() {\n        super.dispose();\n    }\n    /**\n     * Handle out of dialog NOTIFY associated with SUBSCRIBE request.\n     * This is the first NOTIFY received after the SUBSCRIBE request.\n     * @param uas - User agent server handling the subscription creating NOTIFY.\n     */\n    onNotify(uas) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        const event = uas.message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.logger.warn(`Failed to parse event.`);\n            uas.reject({ statusCode: 489 });\n            return;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = uas.message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.logger.warn(\"Failed to parse subscription state.\");\n            uas.reject({ statusCode: 489 });\n            return;\n        }\n        // Validate subscription state.\n        const state = subscriptionState.state;\n        switch (state) {\n            case \"pending\":\n                break;\n            case \"active\":\n                break;\n            case \"terminated\":\n                break;\n            default:\n                this.logger.warn(`Invalid subscription state ${state}`);\n                uas.reject({ statusCode: 489 });\n                return;\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (state !== \"terminated\") {\n            // The Contact header field MUST be present and contain exactly one SIP\n            // or SIPS URI in any request that can result in the establishment of a\n            // dialog.\n            // https://tools.ietf.org/html/rfc3261#section-8.1.1.8\n            const contact = uas.message.parseHeader(\"contact\");\n            if (!contact) {\n                this.logger.warn(\"Failed to parse contact.\");\n                uas.reject({ statusCode: 489 });\n                return;\n            }\n        }\n        // In accordance with the rules for proxying non-INVITE requests as\n        // defined in [RFC3261], successful SUBSCRIBE requests will receive only\n        // one 200-class response; however, due to forking, the subscription may\n        // have been accepted by multiple nodes.  The subscriber MUST therefore\n        // be prepared to receive NOTIFY requests with \"From:\" tags that differ\n        // from the \"To:\" tag received in the SUBSCRIBE 200-class response.\n        //\n        // If multiple NOTIFY requests are received in different dialogs in\n        // response to a single SUBSCRIBE request, each dialog represents a\n        // different destination to which the SUBSCRIBE request was forked.\n        // Subscriber handling in such situations varies by event package; see\n        // Section 5.4.9 for details.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.4\n        // Each event package MUST specify whether forked SUBSCRIBE requests are\n        // allowed to install multiple subscriptions.\n        //\n        // If such behavior is not allowed, the first potential dialog-\n        // establishing message will create a dialog.  All subsequent NOTIFY\n        // requests that correspond to the SUBSCRIBE request (i.e., have\n        // matching \"To\", \"From\", \"Call-ID\", and \"Event\" header fields, as well\n        // as \"From\" header field \"tag\" parameter and \"Event\" header field \"id\"\n        // parameter) but that do not match the dialog would be rejected with a\n        // 481 response.  Note that the 200-class response to the SUBSCRIBE\n        // request can arrive after a matching NOTIFY request has been received;\n        // such responses might not correlate to the same dialog established by\n        // the NOTIFY request.  Except as required to complete the SUBSCRIBE\n        // transaction, such non-matching 200-class responses are ignored.\n        //\n        // If installing of multiple subscriptions by way of a single forked\n        // SUBSCRIBE request is allowed, the subscriber establishes a new dialog\n        // towards each notifier by returning a 200-class response to each\n        // NOTIFY request.  Each dialog is then handled as its own entity and is\n        // refreshed independently of the other dialogs.\n        //\n        // In the case that multiple subscriptions are allowed, the event\n        // package MUST specify whether merging of the notifications to form a\n        // single state is required, and how such merging is to be performed.\n        // Note that it is possible that some event packages may be defined in\n        // such a way that each dialog is tied to a mutually exclusive state\n        // that is unaffected by the other dialogs; this MUST be clearly stated\n        // if it is the case.\n        // https://tools.ietf.org/html/rfc6665#section-5.4.9\n        // *** NOTE: This implementation is only for event packages which\n        // do not allow forked requests to install multiple subscriptions.\n        // As such and in accordance with the specification, we stop waiting\n        // and any future NOTIFY requests will be rejected with a 481.\n        if (this.dialog) {\n            throw new Error(\"Dialog already created. This implementation only supports install of single subscriptions.\");\n        }\n        this.waitNotifyStop();\n        // Update expires.\n        this.subscriptionExpires = subscriptionState.expires\n            ? Math.min(this.subscriptionExpires, Math.max(subscriptionState.expires, 0))\n            : this.subscriptionExpires;\n        // Update subscription state.\n        switch (state) {\n            case \"pending\":\n                this.subscriptionState = SubscriptionState.Pending;\n                break;\n            case \"active\":\n                this.subscriptionState = SubscriptionState.Active;\n                break;\n            case \"terminated\":\n                this.subscriptionState = SubscriptionState.Terminated;\n                break;\n            default:\n                throw new Error(`Unrecognized state ${state}.`);\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (this.subscriptionState !== SubscriptionState.Terminated) {\n            // Because the dialog usage is established by the NOTIFY request, the\n            // route set at the subscriber is taken from the NOTIFY request itself,\n            // as opposed to the route set present in the 200-class response to the\n            // SUBSCRIBE request.\n            // https://tools.ietf.org/html/rfc6665#section-4.4.1\n            const dialogState = SubscriptionDialog.initialDialogStateForSubscription(this.message, uas.message);\n            // Subscription Initiated! :)\n            this.dialog = new SubscriptionDialog(this.subscriptionEvent, this.subscriptionExpires, this.subscriptionState, this.core, dialogState);\n        }\n        // Delegate.\n        if (this.delegate && this.delegate.onNotify) {\n            const request = uas;\n            const subscription = this.dialog;\n            this.delegate.onNotify({ request, subscription });\n        }\n        else {\n            uas.accept();\n        }\n    }\n    waitNotifyStart() {\n        if (!this.N) {\n            // Add ourselves to the core's subscriber map.\n            // This allows the core to route out of dialog NOTIFY messages to us.\n            this.core.subscribers.set(this.subscriberId, this);\n            this.N = setTimeout(() => this.timerN(), Timers.TIMER_N);\n        }\n    }\n    waitNotifyStop() {\n        if (this.N) {\n            // Remove ourselves to the core's subscriber map.\n            // Any future out of dialog NOTIFY messages will be rejected with a 481.\n            this.core.subscribers.delete(this.subscriberId);\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message)) {\n            return;\n        }\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            // The \"Expires\" values present in SUBSCRIBE 200-class responses behave\n            // in the same way as they do in REGISTER responses: the server MAY\n            // shorten the interval but MUST NOT lengthen it.\n            //\n            //    If the duration specified in a SUBSCRIBE request is unacceptably\n            //    short, the notifier may be able to send a 423 response, as\n            //    described earlier in this section.\n            //\n            // 200-class responses to SUBSCRIBE requests will not generally contain\n            // any useful information beyond subscription duration; their primary\n            // purpose is to serve as a reliability mechanism.  State information\n            // will be communicated via a subsequent NOTIFY request from the\n            // notifier.\n            // https://tools.ietf.org/html/rfc6665#section-4.2.1.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) {\n                this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            }\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (subscriptionExpiresReceived > this.subscriptionExpiresRequested) {\n                    this.logger.warn(\"Expires header in a 200-class response to SUBSCRIBE with a higher value than the one in the request\");\n                }\n                if (subscriptionExpiresReceived < this.subscriptionExpires) {\n                    this.subscriptionExpires = subscriptionExpiresReceived;\n                }\n            }\n            // If a NOTIFY arrived before 200-class response a dialog may have been created.\n            // Updated the dialogs expiration only if this indicates earlier expiration.\n            if (this.dialog) {\n                if (this.dialog.subscriptionExpires > this.subscriptionExpires) {\n                    this.dialog.subscriptionExpires = this.subscriptionExpires;\n                }\n            }\n        }\n        if (message.statusCode && message.statusCode >= 300 && message.statusCode < 700) {\n            this.waitNotifyStop(); // No NOTIFY will be sent after a negative final response.\n        }\n        super.receiveResponse(message);\n    }\n    /**\n     * To ensure that subscribers do not wait indefinitely for a\n     * subscription to be established, a subscriber starts a Timer N, set to\n     * 64*T1, when it sends a SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription failed, and cleans up any state associated with the\n     * subscription attempt.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.4\n     */\n    timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE user agent client. Timed out waiting for NOTIFY.`);\n        this.waitNotifyStop();\n        if (this.delegate && this.delegate.onNotifyTimeout) {\n            this.delegate.onNotifyTimeout();\n        }\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { C } from \"../messages/methods/constants.js\";\nimport { SubscriptionState } from \"../subscription/subscription.js\";\nimport { Timers } from \"../timers.js\";\nimport { AllowedMethods } from \"../user-agent-core/allowed-methods.js\";\nimport { NotifyUserAgentServer } from \"../user-agents/notify-user-agent-server.js\";\nimport { ReSubscribeUserAgentClient } from \"../user-agents/re-subscribe-user-agent-client.js\";\nimport { Dialog } from \"./dialog.js\";\n/**\n * Subscription Dialog.\n * @remarks\n * SIP-Specific Event Notification\n *\n * Abstract\n *\n *    This document describes an extension to the Session Initiation\n *    Protocol (SIP) defined by RFC 3261.  The purpose of this extension is\n *    to provide an extensible framework by which SIP nodes can request\n *    notification from remote nodes indicating that certain events have\n *    occurred.\n *\n *    Note that the event notification mechanisms defined herein are NOT\n *    intended to be a general-purpose infrastructure for all classes of\n *    event subscription and notification.\n *\n *    This document represents a backwards-compatible improvement on the\n *    original mechanism described by RFC 3265, taking into account several\n *    years of implementation experience.  Accordingly, this document\n *    obsoletes RFC 3265.  This document also updates RFC 4660 slightly to\n *    accommodate some small changes to the mechanism that were discussed\n *    in that document.\n *\n *  https://tools.ietf.org/html/rfc6665\n * @public\n */\nexport class SubscriptionDialog extends Dialog {\n    constructor(subscriptionEvent, subscriptionExpires, subscriptionState, core, state, delegate) {\n        super(core, state);\n        this.delegate = delegate;\n        this._autoRefresh = false;\n        this._subscriptionEvent = subscriptionEvent;\n        this._subscriptionExpires = subscriptionExpires;\n        this._subscriptionExpiresInitial = subscriptionExpires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        this._subscriptionRefresh = undefined;\n        this._subscriptionRefreshLastSet = undefined;\n        this._subscriptionState = subscriptionState;\n        this.logger = core.loggerFactory.getLogger(\"sip.subscribe-dialog\");\n        this.logger.log(`SUBSCRIBE dialog ${this.id} constructed`);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */\n    static initialDialogStateForSubscription(outgoingSubscribeRequestMessage, incomingNotifyRequestMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingNotifyRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingNotifyRequestMessage.parseHeader(\"contact\");\n        if (!contact) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n        }\n        if (!(contact instanceof NameAddrHeader)) {\n            throw new Error(\"Contact not instance of NameAddrHeader.\");\n        }\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingSubscribeRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingSubscribeRequestMessage.callId;\n        const localTag = outgoingSubscribeRequestMessage.fromTag;\n        const remoteTag = incomingNotifyRequestMessage.fromTag;\n        if (!callId) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Call id undefined.\");\n        }\n        if (!localTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From tag undefined.\");\n        }\n        if (!remoteTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        }\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingSubscribeRequestMessage.from) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From undefined.\");\n        }\n        if (!outgoingSubscribeRequestMessage.to) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To undefined.\");\n        }\n        const localURI = outgoingSubscribeRequestMessage.from.uri;\n        const remoteURI = outgoingSubscribeRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        const early = false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early,\n            callId,\n            localTag,\n            remoteTag,\n            localSequenceNumber,\n            remoteSequenceNumber,\n            localURI,\n            remoteURI,\n            remoteTarget,\n            routeSet,\n            secure\n        };\n        return dialogState;\n    }\n    dispose() {\n        super.dispose();\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        this.refreshTimerClear();\n        this.logger.log(`SUBSCRIBE dialog ${this.id} destroyed`);\n    }\n    get autoRefresh() {\n        return this._autoRefresh;\n    }\n    set autoRefresh(autoRefresh) {\n        this._autoRefresh = true;\n        this.refreshTimerSet();\n    }\n    get subscriptionEvent() {\n        return this._subscriptionEvent;\n    }\n    /** Number of seconds until subscription expires. */\n    get subscriptionExpires() {\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionExpiresLastSet;\n        const secondsUntilExpires = this._subscriptionExpires - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    set subscriptionExpires(expires) {\n        if (expires < 0) {\n            throw new Error(\"Expires must be greater than or equal to zero.\");\n        }\n        this._subscriptionExpires = expires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        if (this.autoRefresh) {\n            const refresh = this.subscriptionRefresh;\n            if (refresh === undefined || refresh >= expires) {\n                this.refreshTimerSet();\n            }\n        }\n    }\n    get subscriptionExpiresInitial() {\n        return this._subscriptionExpiresInitial;\n    }\n    /** Number of seconds until subscription auto refresh. */\n    get subscriptionRefresh() {\n        if (this._subscriptionRefresh === undefined || this._subscriptionRefreshLastSet === undefined) {\n            return undefined;\n        }\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionRefreshLastSet;\n        const secondsUntilExpires = this._subscriptionRefresh - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    get subscriptionState() {\n        return this._subscriptionState;\n    }\n    /**\n     * Receive in dialog request message from transport.\n     * @param message -  The incoming request message.\n     */\n    receiveRequest(message) {\n        this.logger.log(`SUBSCRIBE dialog ${this.id} received ${message.method} request`);\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`SUBSCRIBE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Switch on method and then delegate.\n        switch (message.method) {\n            case C.NOTIFY:\n                this.onNotify(message);\n                break;\n            default:\n                this.logger.log(`SUBSCRIBE dialog ${this.id} received unimplemented ${message.method} request`);\n                this.core.replyStateless(message, { statusCode: 501 });\n                break;\n        }\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */\n    refresh() {\n        const allowHeader = \"Allow: \" + AllowedMethods.toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: \" + this.subscriptionExpiresInitial);\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     * @param delegate - Delegate to handle responses.\n     * @param options - Options bucket.\n     */\n    subscribe(delegate, options = {}) {\n        var _a;\n        if (this.subscriptionState !== SubscriptionState.Pending && this.subscriptionState !== SubscriptionState.Active) {\n            // FIXME: This needs to be a proper exception\n            throw new Error(`Invalid state ${this.subscriptionState}. May only re-subscribe while in state \"pending\" or \"active\".`);\n        }\n        this.logger.log(`SUBSCRIBE dialog ${this.id} sending SUBSCRIBE request`);\n        const uac = new ReSubscribeUserAgentClient(this, delegate, options);\n        // Abort any outstanding timer (as it would otherwise become guaranteed to terminate us).\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        if (!((_a = options.extraHeaders) === null || _a === void 0 ? void 0 : _a.includes(\"Expires: 0\"))) {\n            // When refreshing a subscription, a subscriber starts Timer N, set to\n            // 64*T1, when it sends the SUBSCRIBE request.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n            this.N = setTimeout(() => this.timerN(), Timers.TIMER_N);\n        }\n        return uac;\n    }\n    /**\n     * 4.4.1.  Dialog Creation and Termination\n     * A subscription is destroyed after a notifier sends a NOTIFY request\n     * with a \"Subscription-State\" of \"terminated\", or in certain error\n     * situations described elsewhere in this document.\n     * https://tools.ietf.org/html/rfc6665#section-4.4.1\n     */\n    terminate() {\n        this.stateTransition(SubscriptionState.Terminated);\n        this.onTerminated();\n    }\n    /**\n     * 4.1.2.3.  Unsubscribing\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.3\n     */\n    unsubscribe() {\n        const allowHeader = \"Allow: \" + AllowedMethods.toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: 0\");\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * Handle in dialog NOTIFY requests.\n     * This does not include the first NOTIFY which created the dialog.\n     * @param message - The incoming NOTIFY request message.\n     */\n    onNotify(message) {\n        // If, for some reason, the event package designated in the \"Event\"\n        // header field of the NOTIFY request is not supported, the subscriber\n        // will respond with a 489 (Bad Event) response.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const event = message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.core.replyStateless(message, { statusCode: 489 });\n            return;\n        }\n        // In the state diagram, \"Re-subscription times out\" means that an\n        // attempt to refresh or update the subscription using a new SUBSCRIBE\n        // request does not result in a NOTIFY request before the corresponding\n        // Timer N expires.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.core.replyStateless(message, { statusCode: 489 });\n            return;\n        }\n        const state = subscriptionState.state;\n        const expires = subscriptionState.expires ? Math.max(subscriptionState.expires, 0) : undefined;\n        // Update our state and expiration.\n        switch (state) {\n            case \"pending\":\n                this.stateTransition(SubscriptionState.Pending, expires);\n                break;\n            case \"active\":\n                this.stateTransition(SubscriptionState.Active, expires);\n                break;\n            case \"terminated\":\n                this.stateTransition(SubscriptionState.Terminated, expires);\n                break;\n            default:\n                this.logger.warn(\"Unrecognized subscription state.\");\n                break;\n        }\n        // Delegate remainder of NOTIFY handling.\n        const uas = new NotifyUserAgentServer(this, message);\n        if (this.delegate && this.delegate.onNotify) {\n            this.delegate.onNotify(uas);\n        }\n        else {\n            uas.accept();\n        }\n    }\n    onRefresh(request) {\n        if (this.delegate && this.delegate.onRefresh) {\n            this.delegate.onRefresh(request);\n        }\n    }\n    onTerminated() {\n        if (this.delegate && this.delegate.onTerminated) {\n            this.delegate.onTerminated();\n        }\n    }\n    refreshTimerClear() {\n        if (this.refreshTimer) {\n            clearTimeout(this.refreshTimer);\n            this.refreshTimer = undefined;\n        }\n    }\n    refreshTimerSet() {\n        this.refreshTimerClear();\n        if (this.autoRefresh && this.subscriptionExpires > 0) {\n            const refresh = this.subscriptionExpires * 900;\n            this._subscriptionRefresh = Math.floor(refresh / 1000);\n            this._subscriptionRefreshLastSet = Math.floor(Date.now() / 1000);\n            this.refreshTimer = setTimeout(() => {\n                this.refreshTimer = undefined;\n                this._subscriptionRefresh = undefined;\n                this._subscriptionRefreshLastSet = undefined;\n                this.onRefresh(this.refresh());\n            }, refresh);\n        }\n    }\n    stateTransition(newState, newExpires) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            this.logger.warn(`Invalid subscription state transition from ${this.subscriptionState} to ${newState}`);\n        };\n        switch (newState) {\n            case SubscriptionState.Initial:\n                invalidStateTransition();\n                return;\n            case SubscriptionState.NotifyWait:\n                invalidStateTransition();\n                return;\n            case SubscriptionState.Pending:\n                if (this.subscriptionState !== SubscriptionState.NotifyWait &&\n                    this.subscriptionState !== SubscriptionState.Pending) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case SubscriptionState.Active:\n                if (this.subscriptionState !== SubscriptionState.NotifyWait &&\n                    this.subscriptionState !== SubscriptionState.Pending &&\n                    this.subscriptionState !== SubscriptionState.Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case SubscriptionState.Terminated:\n                if (this.subscriptionState !== SubscriptionState.NotifyWait &&\n                    this.subscriptionState !== SubscriptionState.Pending &&\n                    this.subscriptionState !== SubscriptionState.Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            default:\n                invalidStateTransition();\n                return;\n        }\n        // If the \"Subscription-State\" value is \"pending\", the subscription has\n        // been received by the notifier, but there is insufficient policy\n        // information to grant or deny the subscription yet.  If the header\n        // field also contains an \"expires\" parameter, the subscriber SHOULD\n        // take it as the authoritative subscription duration and adjust\n        // accordingly.  No further action is necessary on the part of the\n        // subscriber.  The \"retry-after\" and \"reason\" parameters have no\n        // semantics for \"pending\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === SubscriptionState.Pending) {\n            if (newExpires) {\n                this.subscriptionExpires = newExpires;\n            }\n        }\n        // If the \"Subscription-State\" header field value is \"active\", it means\n        // that the subscription has been accepted and (in general) has been\n        // authorized.  If the header field also contains an \"expires\"\n        // parameter, the subscriber SHOULD take it as the authoritative\n        // subscription duration and adjust accordingly.  The \"retry-after\" and\n        // \"reason\" parameters have no semantics for \"active\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === SubscriptionState.Active) {\n            if (newExpires) {\n                this.subscriptionExpires = newExpires;\n            }\n        }\n        // If the \"Subscription-State\" value is \"terminated\", the subscriber\n        // MUST consider the subscription terminated.  The \"expires\" parameter\n        // has no semantics for \"terminated\" -- notifiers SHOULD NOT include an\n        // \"expires\" parameter on a \"Subscription-State\" header field with a\n        // value of \"terminated\", and subscribers MUST ignore any such\n        // parameter, if present.\n        if (newState === SubscriptionState.Terminated) {\n            this.dispose();\n        }\n        this._subscriptionState = newState;\n    }\n    /**\n     * When refreshing a subscription, a subscriber starts Timer N, set to\n     * 64*T1, when it sends the SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription terminated.  If the subscriber receives a success\n     * response to the SUBSCRIBE request that indicates that no NOTIFY\n     * request will be generated -- such as the 204 response defined for use\n     * with the optional extension described in [RFC5839] -- then it MUST\n     * cancel Timer N.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */\n    timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE dialog. Timed out waiting for NOTIFY.`);\n        if (this.subscriptionState !== SubscriptionState.Terminated) {\n            this.stateTransition(SubscriptionState.Terminated);\n            this.onTerminated();\n        }\n    }\n}\n","/**\n * Subscription state.\n * @remarks\n * https://tools.ietf.org/html/rfc6665#section-4.1.2\n * @public\n */\nexport var SubscriptionState;\n(function (SubscriptionState) {\n    SubscriptionState[\"Initial\"] = \"Initial\";\n    SubscriptionState[\"NotifyWait\"] = \"NotifyWait\";\n    SubscriptionState[\"Pending\"] = \"Pending\";\n    SubscriptionState[\"Active\"] = \"Active\";\n    SubscriptionState[\"Terminated\"] = \"Terminated\";\n})(SubscriptionState = SubscriptionState || (SubscriptionState = {}));\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * Re-SUBSCRIBE UAC.\n * @public\n */\nexport class ReSubscribeUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.SUBSCRIBE, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n        this.dialog = dialog;\n    }\n    waitNotifyStop() {\n        // TODO: Placeholder. Not utilized currently.\n        return;\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */\n    receiveResponse(message) {\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) {\n                this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            }\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (this.dialog.subscriptionExpires > subscriptionExpiresReceived) {\n                    this.dialog.subscriptionExpires = subscriptionExpiresReceived;\n                }\n            }\n        }\n        if (message.statusCode && message.statusCode >= 400 && message.statusCode < 700) {\n            // If a SUBSCRIBE request to refresh a subscription receives a 404, 405,\n            // 410, 416, 480-485, 489, 501, or 604 response, the subscriber MUST\n            // consider the subscription terminated.  (See [RFC5057] for further\n            // details and notes about the effect of error codes on dialogs and\n            // usages within dialog, such as subscriptions).  If the subscriber\n            // wishes to re-subscribe to the state, he does so by composing an\n            // unrelated initial SUBSCRIBE request with a freshly generated Call-ID\n            // and a new, unique \"From\" tag (see Section 4.1.2.1).\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n            const errorCodes = [404, 405, 410, 416, 480, 481, 482, 483, 484, 485, 489, 501, 604];\n            if (errorCodes.includes(message.statusCode)) {\n                this.dialog.terminate();\n            }\n            // If a SUBSCRIBE request to refresh a subscription fails with any error\n            // code other than those listed above, the original subscription is\n            // still considered valid for the duration of the most recently known\n            // \"Expires\" value as negotiated by the most recent successful SUBSCRIBE\n            // transaction, or as communicated by a NOTIFY request in its\n            // \"Subscription-State\" header field \"expires\" parameter.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n        }\n        super.receiveResponse(message);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * SUBSCRIBE UAS.\n * @public\n */\nexport class SubscribeUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(NonInviteServerTransaction, core, message, delegate);\n        this.core = core;\n    }\n}\n","import { EmitterImpl } from \"../../../api/emitter.js\";\nimport { StateTransitionError } from \"../../../api/exceptions/state-transition.js\";\nimport { TransportState } from \"../../../api/transport-state.js\";\nimport { Grammar } from \"../../../grammar/grammar.js\";\n/**\n * Transport for SIP over secure WebSocket (WSS).\n * @public\n */\nexport class Transport {\n    constructor(logger, options) {\n        this._state = TransportState.Disconnected;\n        this.transitioningState = false;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        // logger\n        this.logger = logger;\n        // guard deprecated options (remove this in version 16.x)\n        if (options) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = options;\n            const wsServersDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.wsServers;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.maxReconnectionAttempts;\n            if (wsServersDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"wsServers\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (wsServersDeprecated && !options.server) {\n                if (typeof wsServersDeprecated === \"string\") {\n                    options.server = wsServersDeprecated;\n                }\n                if (wsServersDeprecated instanceof Array) {\n                    options.server = wsServersDeprecated[0];\n                }\n            }\n        }\n        // initialize configuration\n        this.configuration = Object.assign(Object.assign({}, Transport.defaultOptions), options);\n        // validate server URL\n        const url = this.configuration.server;\n        const parsed = Grammar.parse(url, \"absoluteURI\");\n        if (parsed === -1) {\n            this.logger.error(`Invalid WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid WebSocket Server URL\");\n        }\n        if (![\"wss\", \"ws\", \"udp\"].includes(parsed.scheme)) {\n            this.logger.error(`Invalid scheme in WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid scheme in WebSocket Server URL\");\n        }\n        this._protocol = parsed.scheme.toUpperCase();\n    }\n    dispose() {\n        return this.disconnect();\n    }\n    /**\n     * The protocol.\n     *\n     * @remarks\n     * Formatted as defined for the Via header sent-protocol transport.\n     * https://tools.ietf.org/html/rfc3261#section-20.42\n     */\n    get protocol() {\n        return this._protocol;\n    }\n    /**\n     * The URL of the WebSocket Server.\n     */\n    get server() {\n        return this.configuration.server;\n    }\n    /**\n     * Transport state.\n     */\n    get state() {\n        return this._state;\n    }\n    /**\n     * Transport state change emitter.\n     */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The WebSocket.\n     */\n    get ws() {\n        return this._ws;\n    }\n    /**\n     * Connect to network.\n     * Resolves once connected. Otherwise rejects with an Error.\n     */\n    connect() {\n        return this._connect();\n    }\n    /**\n     * Disconnect from network.\n     * Resolves once disconnected. Otherwise rejects with an Error.\n     */\n    disconnect() {\n        return this._disconnect();\n    }\n    /**\n     * Returns true if the `state` equals \"Connected\".\n     * @remarks\n     * This is equivalent to `state === TransportState.Connected`.\n     */\n    isConnected() {\n        return this.state === TransportState.Connected;\n    }\n    /**\n     * Sends a message.\n     * Resolves once message is sent. Otherwise rejects with an Error.\n     * @param message - Message to send.\n     */\n    send(message) {\n        // Error handling is independent of whether the message was a request or\n        // response.\n        //\n        // If the transport user asks for a message to be sent over an\n        // unreliable transport, and the result is an ICMP error, the behavior\n        // depends on the type of ICMP error.  Host, network, port or protocol\n        // unreachable errors, or parameter problem errors SHOULD cause the\n        // transport layer to inform the transport user of a failure in sending.\n        // Source quench and TTL exceeded ICMP errors SHOULD be ignored.\n        //\n        // If the transport user asks for a request to be sent over a reliable\n        // transport, and the result is a connection failure, the transport\n        // layer SHOULD inform the transport user of a failure in sending.\n        // https://tools.ietf.org/html/rfc3261#section-18.4\n        return this._send(message);\n    }\n    _connect() {\n        this.logger.log(`Connecting ${this.server}`);\n        switch (this.state) {\n            case TransportState.Connecting:\n                // If `state` is \"Connecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Connecting));\n                }\n                if (!this.connectPromise) {\n                    throw new Error(\"Connect promise must be defined.\");\n                }\n                return this.connectPromise; // Already connecting\n            case TransportState.Connected:\n                // If `state` is \"Connected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Connecting));\n                }\n                if (this.connectPromise) {\n                    throw new Error(\"Connect promise must not be defined.\");\n                }\n                return Promise.resolve(); // Already connected\n            case TransportState.Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) {\n                    throw new Error(\"Connect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Connecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            case TransportState.Disconnected:\n                // If `state` is \"Disconnected\" `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) {\n                    throw new Error(\"Connect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Connecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        let ws;\n        try {\n            // WebSocket()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/WebSocket\n            ws = new WebSocket(this.server, \"sip\");\n            ws.binaryType = \"arraybuffer\"; // set data type of received binary messages\n            ws.addEventListener(\"close\", (ev) => this.onWebSocketClose(ev, ws));\n            ws.addEventListener(\"error\", (ev) => this.onWebSocketError(ev, ws));\n            ws.addEventListener(\"open\", (ev) => this.onWebSocketOpen(ev, ws));\n            ws.addEventListener(\"message\", (ev) => this.onWebSocketMessage(ev, ws));\n            this._ws = ws;\n        }\n        catch (error) {\n            this._ws = undefined;\n            this.logger.error(\"WebSocket construction failed.\");\n            this.logger.error(error.toString());\n            return new Promise((resolve, reject) => {\n                this.connectResolve = resolve;\n                this.connectReject = reject;\n                // The `state` MUST transition to \"Disconnecting\" or \"Disconnected\" before rejecting\n                this.transitionState(TransportState.Disconnected, error);\n            });\n        }\n        this.connectPromise = new Promise((resolve, reject) => {\n            this.connectResolve = resolve;\n            this.connectReject = reject;\n            this.connectTimeout = setTimeout(() => {\n                this.logger.warn(\"Connect timed out. \" +\n                    \"Exceeded time set in configuration.connectionTimeout: \" +\n                    this.configuration.connectionTimeout +\n                    \"s.\");\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            }, this.configuration.connectionTimeout * 1000);\n        });\n        return this.connectPromise;\n    }\n    _disconnect() {\n        this.logger.log(`Disconnecting ${this.server}`);\n        switch (this.state) {\n            case TransportState.Connecting:\n                // If `state` is \"Connecting\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Disconnecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            case TransportState.Connected:\n                // If `state` is \"Connected\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Disconnecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            case TransportState.Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Disconnecting));\n                }\n                if (!this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must be defined.\");\n                }\n                return this.disconnectPromise; // Already disconnecting\n            case TransportState.Disconnected:\n                // If `state` is \"Disconnected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Disconnecting));\n                }\n                if (this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must not be defined.\");\n                }\n                return Promise.resolve(); // Already disconnected\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        if (!this._ws) {\n            throw new Error(\"WebSocket must be defined.\");\n        }\n        const ws = this._ws;\n        this.disconnectPromise = new Promise((resolve, reject) => {\n            this.disconnectResolve = resolve;\n            this.disconnectReject = reject;\n            try {\n                // WebSocket.close()\n                // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/close\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            }\n            catch (error) {\n                // Treating this as a coding error as it apparently can only happen\n                // if you pass close() invalid parameters (so it should never happen)\n                this.logger.error(\"WebSocket close failed.\");\n                this.logger.error(error.toString());\n                throw error;\n            }\n        });\n        return this.disconnectPromise;\n    }\n    _send(message) {\n        if (this.configuration.traceSip === true) {\n            this.logger.log(\"Sending WebSocket message:\\n\\n\" + message + \"\\n\");\n        }\n        if (this._state !== TransportState.Connected) {\n            return Promise.reject(new Error(\"Not connected.\"));\n        }\n        if (!this._ws) {\n            throw new Error(\"WebSocket undefined.\");\n        }\n        try {\n            // WebSocket.send()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send\n            this._ws.send(message);\n        }\n        catch (error) {\n            if (error instanceof Error) {\n                return Promise.reject(error);\n            }\n            return Promise.reject(new Error(\"WebSocket send failed.\"));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * WebSocket \"onclose\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketClose(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        const message = `WebSocket closed ${this.server} (code: ${ev.code})`;\n        const error = !this.disconnectPromise ? new Error(message) : undefined;\n        if (error) {\n            this.logger.warn(\"WebSocket closed unexpectedly\");\n        }\n        this.logger.log(message);\n        // We are about to transition to disconnected, so clear our web socket\n        this._ws = undefined;\n        // The `state` MUST transition to \"Disconnected\" before resolving (assuming `state` is not already \"Disconnected\").\n        this.transitionState(TransportState.Disconnected, error);\n    }\n    /**\n     * WebSocket \"onerror\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketError(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        this.logger.error(\"WebSocket error occurred.\");\n    }\n    /**\n     * WebSocket \"onmessage\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketMessage(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        const data = ev.data;\n        let finishedData;\n        // CRLF Keep Alive response from server. Clear our keep alive timeout.\n        if (/^(\\r\\n)+$/.test(data)) {\n            this.clearKeepAliveTimeout();\n            if (this.configuration.traceSip === true) {\n                this.logger.log(\"Received WebSocket message with CRLF Keep Alive response\");\n            }\n            return;\n        }\n        if (!data) {\n            this.logger.warn(\"Received empty message, discarding...\");\n            return;\n        }\n        if (typeof data !== \"string\") {\n            // WebSocket binary message.\n            try {\n                finishedData = new TextDecoder().decode(new Uint8Array(data));\n                // TextDecoder (above) is not supported by old browsers, but it correctly decodes UTF-8.\n                // The line below is an ISO 8859-1 (Latin 1) decoder, so just UTF-8 code points that are 1 byte.\n                // It's old code and works in old browsers (IE), so leaving it here in a comment in case someone needs it.\n                // finishedData = String.fromCharCode.apply(null, (new Uint8Array(data) as unknown as Array<number>));\n            }\n            catch (err) {\n                this.logger.error(err.toString());\n                this.logger.error(\"Received WebSocket binary message failed to be converted into string, message discarded\");\n                return;\n            }\n            if (this.configuration.traceSip === true) {\n                this.logger.log(\"Received WebSocket binary message:\\n\\n\" + finishedData + \"\\n\");\n            }\n        }\n        else {\n            // WebSocket text message.\n            finishedData = data;\n            if (this.configuration.traceSip === true) {\n                this.logger.log(\"Received WebSocket text message:\\n\\n\" + finishedData + \"\\n\");\n            }\n        }\n        if (this.state !== TransportState.Connected) {\n            this.logger.warn(\"Received message while not connected, discarding...\");\n            return;\n        }\n        if (this.onMessage) {\n            try {\n                this.onMessage(finishedData);\n            }\n            catch (e) {\n                this.logger.error(e.toString());\n                this.logger.error(\"Exception thrown by onMessage callback\");\n                throw e; // rethrow unhandled exception\n            }\n        }\n    }\n    /**\n     * WebSocket \"onopen\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketOpen(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        if (this._state === TransportState.Connecting) {\n            this.logger.log(`WebSocket opened ${this.server}`);\n            this.transitionState(TransportState.Connected);\n        }\n    }\n    /**\n     * Helper function to generate an Error.\n     * @param state - State transitioning to.\n     */\n    transitionLoopDetectedError(state) {\n        let message = `A state transition loop has been detected.`;\n        message += ` An attempt to transition from ${this._state} to ${state} before the prior transition completed.`;\n        message += ` Perhaps you are synchronously calling connect() or disconnect() from a callback or state change handler?`;\n        this.logger.error(message);\n        return new StateTransitionError(\"Loop detected.\");\n    }\n    /**\n     * Transition transport state.\n     * @internal\n     */\n    transitionState(newState, error) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        if (this.transitioningState) {\n            throw this.transitionLoopDetectedError(newState);\n        }\n        this.transitioningState = true;\n        // Validate state transition\n        switch (this._state) {\n            case TransportState.Connecting:\n                if (newState !== TransportState.Connected &&\n                    newState !== TransportState.Disconnecting &&\n                    newState !== TransportState.Disconnected) {\n                    invalidTransition();\n                }\n                break;\n            case TransportState.Connected:\n                if (newState !== TransportState.Disconnecting && newState !== TransportState.Disconnected) {\n                    invalidTransition();\n                }\n                break;\n            case TransportState.Disconnecting:\n                if (newState !== TransportState.Connecting && newState !== TransportState.Disconnected) {\n                    invalidTransition();\n                }\n                break;\n            case TransportState.Disconnected:\n                if (newState !== TransportState.Connecting) {\n                    invalidTransition();\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        const oldState = this._state;\n        this._state = newState;\n        // Local copies of connect promises (guarding against callbacks changing them indirectly)\n        // const connectPromise = this.connectPromise;\n        const connectResolve = this.connectResolve;\n        const connectReject = this.connectReject;\n        // Reset connect promises if no longer connecting\n        if (oldState === TransportState.Connecting) {\n            this.connectPromise = undefined;\n            this.connectResolve = undefined;\n            this.connectReject = undefined;\n        }\n        // Local copies of disconnect promises (guarding against callbacks changing them indirectly)\n        // const disconnectPromise = this.disconnectPromise;\n        const disconnectResolve = this.disconnectResolve;\n        const disconnectReject = this.disconnectReject;\n        // Reset disconnect promises if no longer disconnecting\n        if (oldState === TransportState.Disconnecting) {\n            this.disconnectPromise = undefined;\n            this.disconnectResolve = undefined;\n            this.disconnectReject = undefined;\n        }\n        // Clear any outstanding connect timeout\n        if (this.connectTimeout) {\n            clearTimeout(this.connectTimeout);\n            this.connectTimeout = undefined;\n        }\n        this.logger.log(`Transitioned from ${oldState} to ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        //  Transition to Connected\n        if (newState === TransportState.Connected) {\n            this.startSendingKeepAlives();\n            if (this.onConnect) {\n                try {\n                    this.onConnect();\n                }\n                catch (e) {\n                    this.logger.error(e.toString());\n                    this.logger.error(\"Exception thrown by onConnect callback\");\n                    throw e; // rethrow unhandled exception\n                }\n            }\n        }\n        //  Transition from Connected\n        if (oldState === TransportState.Connected) {\n            this.stopSendingKeepAlives();\n            if (this.onDisconnect) {\n                try {\n                    if (error) {\n                        this.onDisconnect(error);\n                    }\n                    else {\n                        this.onDisconnect();\n                    }\n                }\n                catch (e) {\n                    this.logger.error(e.toString());\n                    this.logger.error(\"Exception thrown by onDisconnect callback\");\n                    throw e; // rethrow unhandled exception\n                }\n            }\n        }\n        // Complete connect promise\n        if (oldState === TransportState.Connecting) {\n            if (!connectResolve) {\n                throw new Error(\"Connect resolve undefined.\");\n            }\n            if (!connectReject) {\n                throw new Error(\"Connect reject undefined.\");\n            }\n            newState === TransportState.Connected ? connectResolve() : connectReject(error || new Error(\"Connect aborted.\"));\n        }\n        // Complete disconnect promise\n        if (oldState === TransportState.Disconnecting) {\n            if (!disconnectResolve) {\n                throw new Error(\"Disconnect resolve undefined.\");\n            }\n            if (!disconnectReject) {\n                throw new Error(\"Disconnect reject undefined.\");\n            }\n            newState === TransportState.Disconnected\n                ? disconnectResolve()\n                : disconnectReject(error || new Error(\"Disconnect aborted.\"));\n        }\n        this.transitioningState = false;\n    }\n    // TODO: Review \"KeepAlive Stuff\".\n    // It is not clear if it works and there are no tests for it.\n    // It was blindly lifted the keep alive code unchanged from earlier transport code.\n    //\n    // From the RFC...\n    //\n    // SIP WebSocket Clients and Servers may keep their WebSocket\n    // connections open by sending periodic WebSocket \"Ping\" frames as\n    // described in [RFC6455], Section 5.5.2.\n    // ...\n    // The indication and use of the CRLF NAT keep-alive mechanism defined\n    // for SIP connection-oriented transports in [RFC5626], Section 3.5.1 or\n    // [RFC6223] are, of course, usable over the transport defined in this\n    // specification.\n    // https://tools.ietf.org/html/rfc7118#section-6\n    //\n    // and...\n    //\n    // The Ping frame contains an opcode of 0x9.\n    // https://tools.ietf.org/html/rfc6455#section-5.5.2\n    //\n    // ==============================\n    // KeepAlive Stuff\n    // ==============================\n    clearKeepAliveTimeout() {\n        if (this.keepAliveDebounceTimeout) {\n            clearTimeout(this.keepAliveDebounceTimeout);\n        }\n        this.keepAliveDebounceTimeout = undefined;\n    }\n    /**\n     * Send a keep-alive (a double-CRLF sequence).\n     */\n    sendKeepAlive() {\n        if (this.keepAliveDebounceTimeout) {\n            // We already have an outstanding keep alive, do not send another.\n            return Promise.resolve();\n        }\n        this.keepAliveDebounceTimeout = setTimeout(() => {\n            this.clearKeepAliveTimeout();\n        }, this.configuration.keepAliveDebounce * 1000);\n        return this.send(\"\\r\\n\\r\\n\");\n    }\n    /**\n     * Start sending keep-alives.\n     */\n    startSendingKeepAlives() {\n        // Compute an amount of time in seconds to wait before sending another keep-alive.\n        const computeKeepAliveTimeout = (upperBound) => {\n            const lowerBound = upperBound * 0.8;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        if (this.configuration.keepAliveInterval && !this.keepAliveInterval) {\n            this.keepAliveInterval = setInterval(() => {\n                this.sendKeepAlive();\n                this.startSendingKeepAlives();\n            }, computeKeepAliveTimeout(this.configuration.keepAliveInterval));\n        }\n    }\n    /**\n     * Stop sending keep-alives.\n     */\n    stopSendingKeepAlives() {\n        if (this.keepAliveInterval) {\n            clearInterval(this.keepAliveInterval);\n        }\n        if (this.keepAliveDebounceTimeout) {\n            clearTimeout(this.keepAliveDebounceTimeout);\n        }\n        this.keepAliveInterval = undefined;\n        this.keepAliveDebounceTimeout = undefined;\n    }\n}\nTransport.defaultOptions = {\n    server: \"\",\n    connectionTimeout: 5,\n    keepAliveInterval: 0,\n    keepAliveDebounce: 10,\n    traceSip: true\n};\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating an invalid state transition error occured.\n * @public\n */\nexport class StateTransitionError extends Exception {\n    constructor(message) {\n        super(message ? message : \"An error occurred during state transition.\");\n    }\n}\n","/**\n * {@link Transport} state.\n *\n * @remarks\n * The {@link Transport} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                    ______________________________\n *                   |    ____________              |\n * Transport         v   v            |             |\n * Constructed -> Disconnected -> Connecting -> Connected -> Disconnecting\n *                     ^            ^    |_____________________^  |  |\n *                     |            |_____________________________|  |\n *                     |_____________________________________________|\n * ```\n * @public\n */\nexport var TransportState;\n(function (TransportState) {\n    /**\n     * The `connect()` method was called.\n     */\n    TransportState[\"Connecting\"] = \"Connecting\";\n    /**\n     * The `connect()` method resolved.\n     */\n    TransportState[\"Connected\"] = \"Connected\";\n    /**\n     * The `disconnect()` method was called.\n     */\n    TransportState[\"Disconnecting\"] = \"Disconnecting\";\n    /**\n     * The `connect()` method was rejected, or\n     * the `disconnect()` method completed, or\n     * network connectivity was lost.\n     */\n    TransportState[\"Disconnected\"] = \"Disconnected\";\n})(TransportState = TransportState || (TransportState = {}));\n","export const LIBRARY_VERSION = \"0.21.1\";\n","/**\n * {@link UserAgent} state.\n * @remarks\n * Valid state transitions:\n * ```\n * 1. \"Started\" --> \"Stopped\"\n * 2. \"Stopped\" --> \"Started\"\n * ```\n * @public\n */\nexport var UserAgentState;\n(function (UserAgentState) {\n    UserAgentState[\"Started\"] = \"Started\";\n    UserAgentState[\"Stopped\"] = \"Stopped\";\n})(UserAgentState = UserAgentState || (UserAgentState = {}));\n","/**\n * A simple SIP user implementation for web browsers.\n * @packageDocumentation\n */\nexport * from \"./simple-user.js\";\nexport * from \"./simple-user-delegate.js\";\nexport * from \"./simple-user-options.js\";\n","import { SessionManager } from \"../session-manager/session-manager.js\";\n/**\n * A simple SIP user class.\n * @remarks\n * While this class is completely functional for simple use cases, it is not intended\n * to provide an interface which is suitable for most (must less all) applications.\n * While this class has many limitations (for example, it only handles a single concurrent session),\n * it is, however, intended to serve as a simple example of using the SIP.js API.\n * @public\n */\nexport class SimpleUser {\n    /**\n     * Constructs a new instance of the `SimpleUser` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SimpleUserOptions} for details.\n     */\n    constructor(server, options = {}) {\n        this.session = undefined;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({}, options);\n        // Session manager options\n        const sessionManagerOptions = {\n            aor: this.options.aor,\n            delegate: {\n                onCallAnswered: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallAnswered) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onCallCreated: (session) => {\n                    var _a, _b;\n                    this.session = session;\n                    (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallCreated) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onCallReceived: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallReceived) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onCallHangup: () => {\n                    var _a, _b;\n                    this.session = undefined;\n                    ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHangup) && ((_b = this.delegate) === null || _b === void 0 ? void 0 : _b.onCallHangup());\n                },\n                onCallHold: (s, held) => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHold) === null || _b === void 0 ? void 0 : _b.call(_a, held); },\n                onCallDTMFReceived: (s, tone, dur) => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === null || _b === void 0 ? void 0 : _b.call(_a, tone, dur); },\n                onMessageReceived: (message) => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onMessageReceived) === null || _b === void 0 ? void 0 : _b.call(_a, message.request.body); },\n                onRegistered: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onRegistered) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onUnregistered: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onUnregistered) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onServerConnect: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerConnect) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onServerDisconnect: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerDisconnect) === null || _b === void 0 ? void 0 : _b.call(_a); }\n            },\n            maxSimultaneousSessions: 1,\n            media: this.options.media,\n            reconnectionAttempts: this.options.reconnectionAttempts,\n            reconnectionDelay: this.options.reconnectionDelay,\n            registererOptions: this.options.registererOptions,\n            sendDTMFUsingSessionDescriptionHandler: this.options.sendDTMFUsingSessionDescriptionHandler,\n            userAgentOptions: this.options.userAgentOptions\n        };\n        this.sessionManager = new SessionManager(server, sessionManagerOptions);\n        // Use the SIP.js logger\n        this.logger = this.sessionManager.userAgent.getLogger(\"sip.SimpleUser\");\n    }\n    /**\n     * Instance identifier.\n     * @internal\n     */\n    get id() {\n        return (this.options.userAgentOptions && this.options.userAgentOptions.displayName) || \"Anonymous\";\n    }\n    /** The local media stream. Undefined if call not answered. */\n    get localMediaStream() {\n        return this.session && this.sessionManager.getLocalMediaStream(this.session);\n    }\n    /** The remote media stream. Undefined if call not answered. */\n    get remoteMediaStream() {\n        return this.session && this.sessionManager.getRemoteMediaStream(this.session);\n    }\n    /**\n     * The local audio track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    get localAudioTrack() {\n        return this.session && this.sessionManager.getLocalAudioTrack(this.session);\n    }\n    /**\n     * The local video track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    get localVideoTrack() {\n        return this.session && this.sessionManager.getLocalVideoTrack(this.session);\n    }\n    /**\n     * The remote audio track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    get remoteAudioTrack() {\n        return this.session && this.sessionManager.getRemoteAudioTrack(this.session);\n    }\n    /**\n     * The remote video track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    get remoteVideoTrack() {\n        return this.session && this.sessionManager.getRemoteVideoTrack(this.session);\n    }\n    /**\n     * Connect.\n     * @remarks\n     * Start the UserAgent's WebSocket Transport.\n     */\n    connect() {\n        this.logger.log(`[${this.id}] Connecting UserAgent...`);\n        return this.sessionManager.connect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * Stop the UserAgent's WebSocket Transport.\n     */\n    disconnect() {\n        this.logger.log(`[${this.id}] Disconnecting UserAgent...`);\n        return this.sessionManager.disconnect();\n    }\n    /**\n     * Return true if connected.\n     */\n    isConnected() {\n        return this.sessionManager.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     */\n    register(registererRegisterOptions) {\n        this.logger.log(`[${this.id}] Registering UserAgent...`);\n        return this.sessionManager.register(registererRegisterOptions);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */\n    unregister(registererUnregisterOptions) {\n        this.logger.log(`[${this.id}] Unregistering UserAgent...`);\n        return this.sessionManager.unregister(registererUnregisterOptions);\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */\n    call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`[${this.id}] Beginning Session...`);\n        if (this.session) {\n            return Promise.reject(new Error(\"Session already exists.\"));\n        }\n        return this.sessionManager.call(destination, inviterOptions, inviterInviteOptions).then(() => {\n            return;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    hangup() {\n        this.logger.log(`[${this.id}] Hangup...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.hangup(this.session).then(() => {\n            this.session = undefined;\n        });\n    }\n    /**\n     * Answer an incoming call.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */\n    answer(invitationAcceptOptions) {\n        this.logger.log(`[${this.id}] Accepting Invitation...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.answer(this.session, invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    decline() {\n        this.logger.log(`[${this.id}] rejecting Invitation...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.decline(this.session);\n    }\n    /**\n     * Hold call\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    hold() {\n        this.logger.log(`[${this.id}] holding session...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.hold(this.session);\n    }\n    /**\n     * Unhold call.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    unhold() {\n        this.logger.log(`[${this.id}] unholding session...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.unhold(this.session);\n    }\n    /**\n     * Hold state.\n     * @remarks\n     * True if session is on hold.\n     */\n    isHeld() {\n        return this.session ? this.sessionManager.isHeld(this.session) : false;\n    }\n    /**\n     * Mute call.\n     * @remarks\n     * Disable sender's media tracks.\n     */\n    mute() {\n        this.logger.log(`[${this.id}] disabling media tracks...`);\n        return this.session && this.sessionManager.mute(this.session);\n    }\n    /**\n     * Unmute call.\n     * @remarks\n     * Enable sender's media tracks.\n     */\n    unmute() {\n        this.logger.log(`[${this.id}] enabling media tracks...`);\n        return this.session && this.sessionManager.unmute(this.session);\n    }\n    /**\n     * Mute state.\n     * @remarks\n     * True if sender's media track is disabled.\n     */\n    isMuted() {\n        return this.session ? this.sessionManager.isMuted(this.session) : false;\n    }\n    /**\n     * Send DTMF.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */\n    sendDTMF(tone) {\n        this.logger.log(`[${this.id}] sending DTMF...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.sendDTMF(this.session, tone);\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */\n    message(destination, message) {\n        this.logger.log(`[${this.id}] sending message...`);\n        return this.sessionManager.message(destination, message);\n    }\n}\n","export {};\n","export {};\n","/**\n * A Transport implementation for web browsers.\n * @packageDocumentation\n */\nexport * from \"./transport.js\";\nexport * from \"./transport-options.js\";\n","export {};\n","import { EventEmitter } from 'events';\nimport type { UserAgentOptions, InviterOptions, SessionDescriptionHandlerModifier } from 'sip.js';\nimport { UserAgent, UserAgentState, Registerer, RegistererState, Inviter, Messager } from 'sip.js';\nimport type { IncomingResponse } from 'sip.js/lib/core';\nimport type { WebPhoneTransport } from './transport';\nimport { createWebPhoneTransport } from './transport';\n\nimport type { SipInfo, WebPhoneOptions } from './index';\nimport { AudioHelper } from './audioHelper';\nimport { Events } from './events';\nimport type { RCHeaders, WebPhoneInvitation, WebPhoneSession } from './session';\nimport { onSessionDescriptionHandlerCreated, patchIncomingWebphoneSession, patchWebphoneSession } from './session';\nimport { patchUserAgentCore } from './userAgentCore';\n\n/** RingCentral Active call info */\nexport interface ActiveCallInfo {\n  id: string;\n  from: string;\n  to: string;\n  direction: string;\n  sipData: {\n    toTag: string;\n    fromTag: string;\n  };\n}\n/**\n * WebPhoneUserAgent that makes SIP calls on behalf of the user\n */\nexport interface WebPhoneUserAgent extends UserAgent {\n  /** Utility class to help play incoming and outgoing cues for calls */\n  audioHelper: AudioHelper;\n  /** RTC constraints to be passed to browser when requesting for media stream */\n  constraints?: object;\n  /**\n   * @internal\n   * Contains list of default headers needed to be sent to RingCentral SIP server\n   */\n  defaultHeaders: string[];\n  /**\n   * If `true`, the first answer to the local offer is immediately utilized for media.\n   * Requires that the INVITE request MUST NOT fork.\n   * Has no effect if `inviteWithoutSdp` is true.\n   */\n  earlyMedia?: boolean;\n  /** If `true`, logs media stats when an connection is established */\n  enableMediaReportLogging?: boolean;\n  /** If `true`, Qality of service of the call is generated and published to RingCentral server once the call ends */\n  enableQos?: boolean;\n  /** instanceId used while registering to the backend SIP server */\n  instanceId: string;\n  /** HTML media elements where local and remote audio and video streams should be sent */\n  media?: { local?: HTMLMediaElement; remote?: HTMLMediaElement };\n  /** SDP modifiers to be used when generating local offer or creating answer */\n  modifiers?: SessionDescriptionHandlerModifier[];\n  /** Time interval in ms on how often should the quality of service data be collected */\n  qosCollectInterval?: number;\n  /** regId used while registering to the backend SIP server */\n  regId?: number;\n  /**\n   * @internal\n   * Instance of Registerer which will be used to register the device\n   */\n  registerer?: Registerer;\n  /** sip info received by RingCentral backend server when provisioning a device */\n  sipInfo?: SipInfo;\n  /** Transport class over which communication would take place */\n  transport: WebPhoneTransport;\n  /** To add event listeners to be triggered whenever an event on UserAgent is emitted */\n  addListener?: typeof EventEmitter.prototype.addListener;\n  /**\n   * @internal\n   * Helper function to create RingCentral message\n   */\n  createRcMessage?: (options: RCHeaders) => string;\n  /** Emit event along with data which will trigger all listerenes attached to that event */\n  emit: typeof EventEmitter.prototype.emit;\n  /** Send call invitation */\n  invite: (number: string, options: InviteOptions) => WebPhoneSession;\n  /** Remove event listener from list of listeners for that event */\n  off: typeof EventEmitter.prototype.off;\n  /** To add event listeners to be triggered whenever an event on UserAgent is emitted */\n  on: typeof EventEmitter.prototype.on;\n  /** Add once event listener from list of listeners for that event */\n  once: typeof EventEmitter.prototype.once;\n  /**\n   * @internal\n   * Function which will be called when session is created. It's value is picked using options.onSession when instantiating userAgent object\n   */\n  onSession?: (session: WebPhoneSession) => void;\n  /** Register device with the registrar */\n  register?: () => Promise<void>;\n  /** Remove event listener from list of listeners for that event */\n  removeListener?: typeof EventEmitter.prototype.removeListener;\n  /** Remove all event listener from list of listeners for that event */\n  removeAllListeners?: typeof EventEmitter.prototype.removeAllListeners;\n  /**\n   * @internal\n   * Utility function used to send message to backend server\n   */\n  sendMessage?: (to: string, messageData: string) => Promise<IncomingResponse>;\n  /** To switch from another device to this device */\n  switchFrom: (activeCall: ActiveCallInfo, options: InviteOptions) => WebPhoneSession;\n  /** Unregister device from the registrar */\n  unregister: () => Promise<void>;\n}\n\nexport interface InviteOptions {\n  fromNumber?: string;\n  homeCountryId?: string;\n  extraHeaders?: string[];\n  RTCConstraints?: any;\n}\n\n/** @ignore */\n// eslint-disable-next-line max-params\nexport function createWebPhoneUserAgent(\n  configuration: UserAgentOptions,\n  sipInfo: SipInfo,\n  options: WebPhoneOptions,\n  id: string,\n): WebPhoneUserAgent {\n  const extraConfiguration: UserAgentOptions = {\n    delegate: {\n      onConnect: (): Promise<void> => userAgent.register!(),\n      onInvite: (invitation: WebPhoneInvitation): void => {\n        userAgent.audioHelper!.playIncoming(true);\n        invitation.delegate = {};\n        invitation.delegate.onSessionDescriptionHandler = () => onSessionDescriptionHandlerCreated(invitation);\n        patchWebphoneSession(invitation);\n        patchIncomingWebphoneSession(invitation);\n        (invitation as any).logger.log('UA received incoming call invite');\n        invitation.sendReceiveConfirm!();\n        userAgent.emit!(Events.UserAgent.Invite, invitation);\n      },\n      onNotify: (notification): void => {\n        const event = notification.request.getHeader('Event');\n        if (event === '') {\n          userAgent.emit!(Events.UserAgent.ProvisionUpdate);\n        }\n        (userAgent as any).logger.log('UA received notify');\n        notification.accept();\n      },\n    },\n  };\n  const extendedConfiguration = {\n    ...extraConfiguration,\n    ...configuration,\n  };\n  const userAgent: WebPhoneUserAgent = new UserAgent(extendedConfiguration) as WebPhoneUserAgent;\n  const eventEmitter = new EventEmitter();\n  userAgent.on = eventEmitter.on.bind(eventEmitter);\n  userAgent.off = eventEmitter.off.bind(eventEmitter);\n  userAgent.once = eventEmitter.once.bind(eventEmitter);\n  userAgent.addListener = eventEmitter.addListener.bind(eventEmitter);\n  userAgent.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  userAgent.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n  userAgent.defaultHeaders = [`P-rc-endpoint-id: ${id}`, `Client-id: ${options.clientId}`];\n  if (options.defaultHeaders) {\n    userAgent.defaultHeaders.push(...options.defaultHeaders);\n  }\n  userAgent.regId = options.regId;\n  userAgent.media = {};\n  userAgent.enableQos = options.enableQos;\n  userAgent.enableMediaReportLogging = options.enableMediaReportLogging;\n  userAgent.qosCollectInterval = options.qosCollectInterval;\n  if (options.media?.remote && options.media.local) {\n    userAgent.media.remote = options.media.remote;\n    userAgent.media.local = options.media.local;\n  } else {\n    userAgent.media = undefined;\n  }\n  userAgent.registerer = new Registerer(userAgent, {\n    regId: userAgent.regId,\n    instanceId: userAgent.instanceId,\n    extraHeaders: userAgent.defaultHeaders,\n  });\n  userAgent.sipInfo = sipInfo;\n  userAgent.modifiers = options.modifiers;\n  userAgent.constraints = options.mediaConstraints;\n  userAgent.earlyMedia = options.earlyMedia;\n  userAgent.audioHelper = new AudioHelper(options.audioHelper);\n  userAgent.onSession = options.onSession;\n  (userAgent as any)._transport = createWebPhoneTransport(userAgent.transport, options);\n  (userAgent as any).onTransportDisconnect = onTransportDisconnect.bind(userAgent);\n  userAgent.emit = eventEmitter.emit.bind(eventEmitter);\n  userAgent.register = register.bind(userAgent);\n  userAgent.unregister = unregister.bind(userAgent);\n  userAgent.invite = invite.bind(userAgent);\n  userAgent.sendMessage = sendMessage.bind(userAgent);\n  userAgent.createRcMessage = createRcMessage.bind(userAgent);\n  userAgent.switchFrom = switchFrom.bind(userAgent);\n  patchUserAgentCore(userAgent);\n  userAgent.start();\n  userAgent.stateChange.addListener((newState) => {\n    switch (newState) {\n      case UserAgentState.Started: {\n        userAgent.emit!(Events.UserAgent.Started);\n        break;\n      }\n      case UserAgentState.Stopped: {\n        userAgent.emit!(Events.UserAgent.Stopped);\n        break;\n      }\n    }\n  });\n  userAgent.registerer.stateChange.addListener((newState) => {\n    switch (newState) {\n      case RegistererState.Registered: {\n        userAgent.emit!(Events.UserAgent.Registered);\n        break;\n      }\n      case RegistererState.Unregistered: {\n        userAgent.emit!(Events.UserAgent.Unregistered);\n        break;\n      }\n    }\n  });\n\n  return userAgent;\n}\n\nfunction onTransportDisconnect(this: WebPhoneUserAgent, error?: Error): void {\n  // Patch it so that reconnection is managed by WebPhoneTransport\n  if (this.state === UserAgentState.Stopped) {\n    return;\n  }\n  if (this.delegate?.onDisconnect) {\n    this.delegate.onDisconnect(error);\n  }\n  if (error) {\n    this.transport.reconnect!();\n  }\n}\n\nfunction createRcMessage(this: WebPhoneUserAgent, options: RCHeaders): string {\n  options.body = options.body || '';\n  return (\n    '<Msg>' +\n    '<Hdr SID=\"' +\n    options.sid +\n    '\" Req=\"' +\n    options.request +\n    '\" From=\"' +\n    options.from +\n    '\" To=\"' +\n    options.to +\n    '\" Cmd=\"' +\n    options.reqid +\n    '\"/> ' +\n    '<Bdy Cln=\"' +\n    this.sipInfo!.authorizationId +\n    '\" ' +\n    options.body +\n    '/>' +\n    '</Msg>'\n  );\n}\n\nfunction sendMessage(this: WebPhoneUserAgent, _to: string, messageData: string): Promise<IncomingResponse> {\n  const extraHeaders = [`P-rc-ws: ${this.contact}`];\n  // For some reason, UserAgent.makeURI is unable to parse username starting with #\n  // Fix in later release if this is fixed by SIP.js\n  let to = _to;\n  const [user] = to.split('@');\n  to = to.startsWith('#') ? `sip:${to.substring(1)}` : `sip:${to}`;\n  const uri = UserAgent.makeURI(to)!;\n  uri.user = user;\n  const messager = new Messager(this, uri, messageData, 'x-rc/agent', {\n    extraHeaders,\n  });\n\n  return new Promise((resolve, reject) => {\n    messager.message({\n      requestDelegate: {\n        onAccept: resolve,\n        onReject: reject,\n      },\n    });\n  });\n}\n\nasync function register(this: WebPhoneUserAgent): Promise<void> {\n  await this.registerer!.register({\n    requestDelegate: {\n      onReject: (response): void => {\n        if (!response) {\n          return;\n        }\n        if (this.transport.isSipErrorCode!(response.message.statusCode)) {\n          this.transport.onSipErrorCode!();\n        }\n        this.emit!(Events.UserAgent.RegistrationFailed, response);\n        (this as any).logger.warn('UA Registration Failed');\n      },\n    },\n  });\n}\n\nasync function unregister(this: WebPhoneUserAgent): Promise<void> {\n  await this.registerer!.unregister();\n}\n\nfunction invite(this: WebPhoneUserAgent, number: string, options: InviteOptions = {}): WebPhoneSession {\n  const inviterOptions: InviterOptions = {};\n  inviterOptions.extraHeaders = [\n    ...(options.extraHeaders || []),\n    ...this.defaultHeaders,\n    `P-Asserted-Identity: sip:${(options.fromNumber || this.sipInfo!.username) + '@' + this.sipInfo!.domain}`,\n    ...(options.homeCountryId ? [`P-rc-country-id: ${options.homeCountryId}`] : []),\n  ];\n\n  options.RTCConstraints = options.RTCConstraints || {\n    ...this.constraints,\n    optional: [{ DtlsSrtpKeyAgreement: 'true' }],\n  };\n  inviterOptions.sessionDescriptionHandlerModifiers = this.modifiers;\n  inviterOptions.sessionDescriptionHandlerOptions = {\n    constraints: options.RTCConstraints,\n  };\n  inviterOptions.earlyMedia = this.earlyMedia;\n  inviterOptions.delegate = {\n    onSessionDescriptionHandler: (): void => onSessionDescriptionHandlerCreated(inviter),\n    onNotify: (notification) => notification.accept(),\n  };\n  this.audioHelper!.playOutgoing(true);\n  (this as any).logger.log(`Invite to ${number} created with playOutgoing set to true`);\n  const inviter: WebPhoneSession = new Inviter(\n    this,\n    UserAgent.makeURI(`sip:${number}@${this.sipInfo!.domain}`)!,\n    inviterOptions,\n  ) as WebPhoneSession;\n  inviter\n    .invite({\n      requestDelegate: {\n        onAccept: (inviteResponse) => {\n          inviter.startTime = new Date();\n          inviter.emit!(Events.Session.Accepted, inviteResponse.message);\n        },\n        onProgress: (inviteResponse) => {\n          inviter.emit!(Events.Session.Progress, inviteResponse.message);\n        },\n      },\n    })\n    .then(() => this.emit!(Events.UserAgent.InviteSent, inviter))\n    .catch((e) => {\n      if (e.message.indexOf('Permission denied') > -1) {\n        inviter.emit!(Events.Session.UserMediaFailed);\n      }\n      throw e;\n    });\n  patchWebphoneSession(inviter);\n  return inviter;\n}\n\n/**\n * Support to switch call from other device to current web phone device\n * need active call information from details presence API for switching\n * https://developers.ringcentral.com/api-reference/Detailed-Extension-Presence-with-SIP-Event\n */\n\nfunction switchFrom(this: WebPhoneUserAgent, activeCall: ActiveCallInfo, options: InviteOptions = {}): WebPhoneSession {\n  const replaceHeaders = [\n    `Replaces: ${activeCall.id};to-tag=${activeCall.sipData.fromTag};from-tag=${activeCall.sipData.toTag}`,\n    'RC-call-type: replace',\n  ];\n  const [toNumber, fromNumber] =\n    activeCall.direction === 'Outbound' ? [activeCall.to, activeCall.from] : [activeCall.from, activeCall.to];\n  options.extraHeaders = (options.extraHeaders || []).concat(replaceHeaders);\n  options.fromNumber = options.fromNumber || fromNumber;\n  const inviterOptions: InviterOptions = {\n    extraHeaders: options.extraHeaders,\n    sessionDescriptionHandlerOptions: {\n      constraints: options.RTCConstraints || this.constraints,\n    },\n  };\n  return this.invite!(toNumber, inviterOptions);\n}\n","import { EventEmitter } from 'events';\nimport type { Exception, Logger } from 'sip.js/lib/core';\nimport type { Transport } from 'sip.js/lib/api/transport';\nimport type { Transport as WebTransport } from 'sip.js/lib/platform/web/transport';\nimport type { TransportOptions } from 'sip.js/lib/platform/web/transport/transport-options';\nimport { TransportState } from 'sip.js';\n\nimport type { TransportServer, WebPhoneOptions } from './index';\nimport { Events } from './events';\n\nexport interface WebPhoneTransport extends Transport {\n  /** @ignore */\n  configuration?: TransportOptions;\n  /** logger class to log transport related messaged */\n  logger?: Logger;\n  /**\n   * Address of the RingCentral main proxy\n   * Is calculated automatically as the first item in the `options.transportServers` array\n   */\n  mainProxy?: TransportServer;\n  /** Max attempts until which transport reconnection will be attempted before moving to the next available `transportServer` */\n  maxReconnectionAttempts?: number;\n  /** Interval after which the next reconnection attempt will be made */\n  nextReconnectInterval?: number;\n  /** The current reconnection attempt */\n  reconnectionAttempts?: number;\n  /** Timeout to be used to calculate when should the next reconnection attempt be made */\n  reconnectionTimeout?: number;\n  /** @ignore */\n  reconnectTimer?: any;\n  /** Current server where transport is connected */\n  server?: string;\n  /** Possible list of servers where transport can connect to */\n  servers?: TransportServer[];\n  /** List of SIP error codes */\n  sipErrorCodes?: string[];\n  /** Interval after which switch back to main proxy should be initiated */\n  switchBackInterval?: number;\n  /** @ignore */\n  switchBackToMainProxyTimer?: any;\n  /** @ignore */\n  __afterWSConnected?: typeof __afterWSConnected;\n  /** @ignore */\n  __clearSwitchBackToMainProxyTimer?: typeof __clearSwitchBackToMainProxyTimer;\n  /** @ignore */\n  __computeRandomTimeout?: typeof __computeRandomTimeout;\n  /** @ignore */\n  __connect?: typeof __connect;\n  /** @ignore */\n  __isCurrentMainProxy?: typeof __isCurrentMainProxy;\n  /** @ignore */\n  __onConnectedToBackup?: typeof __onConnectedToBackup;\n  /** @ignore */\n  __onConnectedToMain?: typeof __onConnectedToMain;\n  /** @ignore */\n  __resetServersErrorStatus?: typeof __resetServersErrorStatus;\n  /** @ignore */\n  __scheduleSwitchBackToMainProxy?: typeof __scheduleSwitchBackToMainProxy;\n  /** @ignore */\n  __setServerIsError?: typeof __setServerIsError;\n  /** Register functions to be called when events are fired on the transport object */\n  addListener?: typeof EventEmitter.prototype.addListener;\n  /** Trigger events on transport object */\n  emit?: typeof EventEmitter.prototype.emit;\n  /** Get next available server from the list of `transportServers` */\n  getNextWsServer?: (force?: boolean) => TransportServer | undefined;\n  /** Is the current code part of the SIP error codes registered with the transport object */\n  isSipErrorCode?: typeof isSipErrorCode;\n  /** Helper function to check if any valid `transportServers` are available to connect to */\n  noAvailableServers?: () => boolean;\n  /**\n   * Unregister functions to be called when events are fired on the transport object\n   *\n   * alias for removeListener\n   */\n  off: typeof EventEmitter.prototype.off;\n  /** Register functions to be called when events are fired on the transport object\n   *\n   * alias for addListener\n   */\n  on: typeof EventEmitter.prototype.on;\n  /** Register functions to be called once when events are fired on the transport object */\n  once: typeof EventEmitter.prototype.once;\n  /** @ignore */\n  onSipErrorCode?: typeof onSipErrorCode;\n  /** Function to try reconnecting to the transport. Is automatically triggered when transport connection is dropped or `sipErrorCode` is returned from backend server */\n  reconnect: typeof WebTransport.prototype.connect;\n  /**\n   * Unregister functions to be called when events are fired on the transport object\n   */\n  removeListener?: typeof EventEmitter.prototype.removeListener;\n  /**\n   * Unregister all functions to be called when events are fired on the transport object\n   */\n  removeAllListeners?: typeof EventEmitter.prototype.removeAllListeners;\n}\n\nexport function createWebPhoneTransport(transport: WebPhoneTransport, options: WebPhoneOptions): WebPhoneTransport {\n  transport.reconnectionAttempts = 0;\n  transport.sipErrorCodes = options.sipErrorCodes;\n  transport.servers = options.transportServers;\n  const eventEmitter = new EventEmitter();\n  transport.on = eventEmitter.on.bind(eventEmitter);\n  transport.off = eventEmitter.off.bind(eventEmitter);\n  transport.once = eventEmitter.once.bind(eventEmitter);\n  transport.addListener = eventEmitter.addListener.bind(eventEmitter);\n  transport.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  transport.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n  transport.emit = eventEmitter.emit.bind(eventEmitter);\n  transport.mainProxy = options.transportServers![0];\n  transport.switchBackInterval = options.switchBackInterval;\n  transport.reconnectionTimeout = options.reconnectionTimeout;\n  transport.maxReconnectionAttempts = options.maxReconnectionAttempts;\n  transport.__afterWSConnected = __afterWSConnected.bind(transport);\n  transport.__clearSwitchBackToMainProxyTimer = __clearSwitchBackToMainProxyTimer.bind(transport);\n  transport.__computeRandomTimeout = __computeRandomTimeout.bind(transport);\n  transport.__connect = transport.connect;\n  transport.__isCurrentMainProxy = __isCurrentMainProxy.bind(transport);\n  transport.__onConnectedToBackup = __onConnectedToBackup.bind(transport);\n  transport.__onConnectedToMain = __onConnectedToMain.bind(transport);\n  transport.__resetServersErrorStatus = __resetServersErrorStatus.bind(transport);\n  transport.__scheduleSwitchBackToMainProxy = __scheduleSwitchBackToMainProxy.bind(transport);\n  transport.__setServerIsError = __setServerIsError.bind(transport);\n  transport.connect = __connect.bind(transport);\n  transport.getNextWsServer = getNextWsServer.bind(transport);\n  transport.isSipErrorCode = isSipErrorCode.bind(transport);\n  transport.noAvailableServers = noAvailableServers.bind(transport);\n  transport.onSipErrorCode = onSipErrorCode.bind(transport);\n  transport.reconnect = reconnect.bind(transport);\n  transport.stateChange.addListener((newState) => {\n    switch (newState) {\n      case TransportState.Connecting: {\n        transport.emit!(Events.Transport.Connecting);\n        break;\n      }\n      case TransportState.Connected: {\n        transport.emit!(Events.Transport.Connected);\n        transport.__afterWSConnected!();\n        break;\n      }\n      case TransportState.Disconnecting: {\n        transport.emit!(Events.Transport.Disconnecting);\n        break;\n      }\n      case TransportState.Disconnected: {\n        transport.emit!(Events.Transport.Disconnected);\n        break;\n      }\n    }\n  });\n  return transport;\n}\n\nfunction __connect(this: WebPhoneTransport): Promise<void> {\n  return this.__connect!().catch(async (e: Exception) => {\n    this.logger!.error(`unable to establish connection to server ${this.server} - ${e.message}`);\n    this.emit!(Events.Transport.ConnectionAttemptFailure, e); // Can we move to onTransportDisconnect?\n    await this.reconnect!();\n  });\n}\n\nfunction __computeRandomTimeout(reconnectionAttempts = 1, randomMinInterval = 0, randomMaxInterval = 0): number {\n  if (randomMinInterval < 0 || randomMaxInterval < 0 || reconnectionAttempts < 1) {\n    throw new Error('Arguments must be positive numbers');\n  }\n\n  const randomInterval =\n    Math.floor(Math.random() * Math.abs(randomMaxInterval - randomMinInterval)) + randomMinInterval;\n  const retryOffset = ((reconnectionAttempts - 1) * (randomMinInterval + randomMaxInterval)) / 2;\n\n  return randomInterval + retryOffset;\n}\n\nfunction __setServerIsError(this: WebPhoneTransport, uri: string): void {\n  this.servers!.forEach((server) => {\n    if (server.uri === uri && !server.isError) {\n      server.isError = true;\n    }\n  });\n}\n\nfunction __resetServersErrorStatus(this: WebPhoneTransport): void {\n  this.servers!.forEach((server) => {\n    server.isError = false;\n  });\n}\n\nfunction __isCurrentMainProxy(this: WebPhoneTransport): boolean {\n  return this.server === this.servers![0].uri;\n}\n\nfunction __afterWSConnected(this: WebPhoneTransport): void {\n  this.__isCurrentMainProxy!() ? this.__onConnectedToMain!() : this.__onConnectedToBackup!();\n}\n\nfunction __onConnectedToMain(this: WebPhoneTransport): void {\n  this.__clearSwitchBackToMainProxyTimer!();\n}\n\nfunction __onConnectedToBackup(this: WebPhoneTransport): void {\n  if (!this.switchBackToMainProxyTimer) {\n    this.__scheduleSwitchBackToMainProxy!();\n  }\n}\n\nfunction __scheduleSwitchBackToMainProxy(this: WebPhoneTransport): void {\n  const randomInterval = 15 * 60 * 1000; // 15 min\n\n  let switchBackInterval = this.switchBackInterval ? this.switchBackInterval * 1000 : null;\n\n  // Add random time to expand clients connections in time;\n  if (switchBackInterval) {\n    switchBackInterval += this.__computeRandomTimeout!(1, 0, randomInterval);\n    this.logger!.warn('Try to switch back to main proxy after ' + Math.round(switchBackInterval / 1000 / 60) + ' min');\n\n    this.switchBackToMainProxyTimer = setTimeout(() => {\n      this.switchBackToMainProxyTimer = null;\n      this.logger!.warn('switchBack initiated');\n      this.emit!(Events.Transport.SwitchBackToMainProxy);\n      // FIXME: Why is force reconnect not called here and the client is made to do that?\n    }, switchBackInterval);\n  } else {\n    this.logger!.warn('switchBackInterval is not set. Will be switched with next provision update ');\n  }\n}\n\nfunction __clearSwitchBackToMainProxyTimer(this: WebPhoneTransport): void {\n  if (this.switchBackToMainProxyTimer) {\n    clearTimeout(this.switchBackToMainProxyTimer);\n    this.switchBackToMainProxyTimer = null;\n  }\n}\n\nasync function reconnect(this: WebPhoneTransport, forceReconnectToMain?: boolean): Promise<void> {\n  if (this.reconnectionAttempts! > 0) {\n    this.logger!.warn(`Reconnection attempt ${this.reconnectionAttempts} failed`);\n  }\n\n  if (this.reconnectTimer) {\n    this.logger!.warn('already trying to reconnect');\n    return;\n  }\n\n  if (forceReconnectToMain) {\n    this.logger!.warn('forcing connect to main WS server');\n    await this.disconnect();\n    this.server = this.getNextWsServer!(true)!.uri;\n    this.reconnectionAttempts = 0;\n    await this.connect();\n    return;\n  }\n\n  if (this.isConnected()) {\n    this.logger!.warn('attempted to reconnect while connected - forcing disconnect');\n    await this.disconnect();\n    await this.reconnect!();\n    return;\n  }\n\n  if (this.noAvailableServers!()) {\n    this.logger!.warn('no available WebSocket servers left');\n    this.emit!(Events.Transport.Closed);\n    this.__resetServersErrorStatus!();\n    this.server = this.getNextWsServer!(true)!.uri;\n    this.__clearSwitchBackToMainProxyTimer!();\n    return;\n  }\n\n  this.reconnectionAttempts! += 1;\n\n  if (this.reconnectionAttempts! > this.maxReconnectionAttempts!) {\n    this.logger!.warn(`maximum reconnection attempts for WebSocket ${this.server}`);\n    this.logger!.warn(`transport ${this.server} failed`);\n    this.__setServerIsError!(this.server!);\n    this.emit!(Events.Transport.ConnectionFailure);\n    const nextServer = this.getNextWsServer!();\n    if (!nextServer) {\n      // No more servers available to try connecting to\n      this.logger!.error('unable to connect to any transport');\n      return;\n    }\n    this.configuration!.server = nextServer.uri;\n    this.reconnectionAttempts = 0;\n    await this.connect();\n  } else {\n    const randomMinInterval = (this.reconnectionTimeout! - 2) * 1000;\n    const randomMaxInterval = (this.reconnectionTimeout! + 2) * 1000;\n    this.nextReconnectInterval = this.__computeRandomTimeout!(\n      this.reconnectionAttempts,\n      randomMinInterval,\n      randomMaxInterval,\n    );\n    this.logger!.warn(\n      `trying to reconnect to WebSocket ${this.server} (reconnection attempt: ${this.reconnectionAttempts})`,\n    );\n    this.reconnectTimer = setTimeout(() => {\n      this.reconnectTimer = undefined;\n      this.connect().then(() => {\n        this.reconnectionAttempts = 0;\n      });\n    }, this.nextReconnectInterval);\n    this.logger!.warn(`next reconnection attempt in: ${Math.round(this.nextReconnectInterval / 1000)} seconds.`);\n  }\n}\n\nfunction getNextWsServer(this: WebPhoneTransport, force = false): TransportServer | undefined {\n  // Adding the force check because otherwise it will not bypass error check\n  if (!force && this.noAvailableServers!()) {\n    this.logger!.warn('attempted to get next ws server but there are no available ws servers left');\n    return;\n  }\n  const candidates = force ? this.servers : this.servers!.filter(({ isError }) => !isError);\n  return candidates![0];\n}\n\nfunction noAvailableServers(this: WebPhoneTransport): boolean {\n  return this.servers!.every(({ isError }) => isError);\n}\n\nfunction isSipErrorCode(this: WebPhoneTransport, statusCode: number | undefined): boolean {\n  if (!statusCode) {\n    return false;\n  }\n  if (!this.sipErrorCodes) {\n    return false;\n  }\n  return this.sipErrorCodes.indexOf(statusCode.toString()) !== -1;\n}\n\nasync function onSipErrorCode(this: WebPhoneTransport): Promise<void> {\n  this.logger!.warn('Error received from the server. Disconnecting from the proxy');\n  this.__setServerIsError!(this.server!);\n  this.emit!(Events.Transport.ConnectionFailure);\n  this.reconnectionAttempts = 0;\n  return this.reconnect!();\n}\n","export interface WebPhoneEvents {\n  /**  All WebPhone events related to Transport */\n  Transport: {\n    /** Fired when Transport is connecting. */\n    Connecting: string;\n    /** Fired when Transport is connected. */\n    Connected: string;\n    /** Fired when Transport is disconnecting. */\n    Disconnecting: string;\n    /** Fired when Transport is disconnected. */\n    Disconnected: string;\n    /** Fired every time a transport connection attempt fails. */\n    ConnectionAttemptFailure: string;\n    /** Fired when maxReconnectionAttempts have exhausted trying to connect to one server or sip error is returned from the server. */\n    ConnectionFailure: string;\n    /** Fired when client should initiate connection back to main proxy. */\n    SwitchBackToMainProxy: string;\n    /** Fired when maxReconnectionAttempts have exhausted trying to connect to one server or sip error is returned from the server. */\n    Closed: string;\n  };\n  /**  All WebPhone events related to UserAgent */\n  UserAgent: {\n    /** Fired when UserAgent is registered with the registerer. */\n    Registered: string;\n    /** Fired when UserAgent is unregistered from the registerer. */\n    Unregistered: string;\n    /** Fired when UserAgent register failed. */\n    RegistrationFailed: string;\n    /** Fired when Invite is sent. */\n    InviteSent: string;\n    /** Fired when Invitation is received. */\n    Invite: string;\n    /** Fired when provisionUpdate notification is received. */\n    ProvisionUpdate: string;\n    /** Fired when UserAgent is started. */\n    Started: string;\n    /** Fired when UserAgent is stopped. */\n    Stopped: string;\n  };\n  /** All WebPhone events related to Session */\n  Session: {\n    /** Fired when Session is accepted. */\n    Accepted: string;\n    /** Fired when Session is progress. */\n    Progress: string;\n    /** Fired when session is muted. */\n    Muted: string;\n    /** Fired when session is unmuted. */\n    Unmuted: string;\n    /** Fired when session is established */\n    Establishing: string;\n    /** Fired when session is established */\n    Established: string;\n    /** Fired when session is terminating */\n    Terminating: string;\n    /** Fired when session is terminated */\n    Terminated: string;\n    /** Fired when UPDATE request is received over socket */\n    UpdateReceived: string;\n    /** Fired when INFO request is received over socket with move to rcv instruction */\n    MoveToRcv: string;\n    /** Fired when QOS is published to the backend server */\n    QOSPublished: string;\n    /** Fired when RTP Stat Report is generated */\n    RTPStat: string;\n    /** Fired when get user media failed */\n    UserMediaFailed: string;\n  };\n}\n\n/** @ignore */\nexport const Events: WebPhoneEvents = {\n  Transport: {\n    Connecting: 'connecting',\n    Connected: 'connected',\n    Disconnecting: 'disconnecting',\n    Disconnected: 'disconnected',\n    ConnectionAttemptFailure: 'wsConnectionError',\n    ConnectionFailure: 'transportError',\n    SwitchBackToMainProxy: 'switchBackProxy',\n    Closed: 'closed',\n  },\n  UserAgent: {\n    Registered: 'registered',\n    Unregistered: 'unregistered',\n    RegistrationFailed: 'registrationFailed',\n    InviteSent: 'inviteSent',\n    Invite: 'invite',\n    ProvisionUpdate: 'provisionUpdate',\n    Started: 'started',\n    Stopped: 'stopped',\n  },\n  Session: {\n    Accepted: 'accepted',\n    Progress: 'progress',\n    Muted: 'muted',\n    Unmuted: 'unmuted',\n    Establishing: 'establishing',\n    Established: 'established',\n    Terminating: 'terminating',\n    Terminated: 'terminated',\n    UpdateReceived: 'updateReceived',\n    MoveToRcv: 'moveToRcv',\n    QOSPublished: 'qos-published',\n    RTPStat: 'rtpStat',\n    UserMediaFailed: 'userMediaFailed',\n  },\n};\n","export interface DomAudio extends HTMLAudioElement {\n  playPromise?: Promise<void>;\n}\n\nexport interface AudioHelperOptions {\n  /** Enable audio feedback for incoming and outgoing calls */\n  enabled?: boolean;\n  /** Path to audio file for incoming call */\n  incoming?: string;\n  /** Path to audio file for outgoing call */\n  outgoing?: string;\n}\n\nexport class AudioHelper {\n  /** Current volume */\n  public volume?: number;\n\n  private readonly _enabled: boolean;\n  private _incoming?: string;\n  private _outgoing?: string;\n  private _audio?: { [key: string]: DomAudio };\n\n  public constructor(options: AudioHelperOptions = {}) {\n    this._enabled = !!options.enabled;\n    this.loadAudio(options);\n  }\n\n  /** Load incoming and outgoing audio files for feedback */\n  public loadAudio(options: AudioHelperOptions): void {\n    this._incoming = options.incoming;\n    this._outgoing = options.outgoing;\n    this._audio = {};\n  }\n\n  /** Set volume for incoming and outgoing feedback */\n  public setVolume(_volume: number): void {\n    let volume = _volume;\n    if (volume < 0) {\n      volume = 0;\n    }\n    if (volume > 1) {\n      volume = 1;\n    }\n    this.volume = volume;\n    for (const url in this._audio) {\n      if (Object.hasOwn(this._audio, url)) {\n        this._audio[url].volume = volume;\n      }\n    }\n  }\n\n  /**\n   * Play or pause incoming feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */\n  public playIncoming(value: boolean): AudioHelper {\n    return this._playSound(this._incoming!, value, this.volume ?? 0.5);\n  }\n\n  /**\n   * Play or pause outgoing feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */\n  public playOutgoing(value: boolean): AudioHelper {\n    return this._playSound(this._outgoing!, value, this.volume ?? 1);\n  }\n\n  private _playSound(url: string, val: boolean, volume: number): AudioHelper {\n    if (!this._enabled || !url || !this._audio) {\n      return this;\n    }\n\n    if (!this._audio[url]) {\n      if (val) {\n        this._audio[url] = new Audio();\n        this._audio[url].src = url;\n        this._audio[url].loop = true;\n        this._audio[url].volume = volume;\n        this._audio[url].playPromise = this._audio[url].play();\n      }\n    } else {\n      if (val) {\n        this._audio[url].currentTime = 0;\n        this._audio[url].playPromise = this._audio[url].play();\n      } else {\n        const audio = this._audio[url];\n        if (audio.playPromise !== undefined) {\n          audio.playPromise.then(() => {\n            audio.pause();\n          });\n        }\n      }\n    }\n    return this;\n  }\n}\n","import { EventEmitter } from 'events';\nimport type {\n  Invitation,\n  InvitationAcceptOptions,\n  Inviter,\n  SessionInviteOptions,\n  SessionReferOptions,\n  URI,\n  Session,\n} from 'sip.js';\nimport { RequestPendingError, UserAgent } from 'sip.js';\nimport type {\n  IncomingRequestMessage,\n  IncomingResponse,\n  OutgoingInviteRequest,\n  OutgoingReferRequest,\n  OutgoingRequestDelegate,\n  RequestOptions,\n} from 'sip.js/lib/core';\nimport { fromBodyLegacy } from 'sip.js/lib/core';\nimport { SessionState } from 'sip.js/lib/api/session-state';\nimport type {\n  SessionDescriptionHandler,\n  SessionDescriptionHandlerOptions,\n} from 'sip.js/lib/platform/web/session-description-handler';\n\nimport { extend } from './utils';\nimport type { Command } from './constants';\nimport { responseTimeout, messages } from './constants';\nimport { MediaStreams } from './mediaStreams';\nimport type { RTPReport } from './rtpReport';\nimport { isNoAudio } from './rtpReport';\nimport type { WebPhoneUserAgent } from './userAgent';\nimport { Events } from './events';\nimport type { WehPhoneUserAgentCore } from './userAgentCore';\nimport { startQosStatsCollection } from './qos';\n\nexport interface QosStats {\n  cpuRC?: string;\n  cpuOS?: string;\n  ram?: string;\n  netType?: string;\n}\n\n/**\n * Object representing all the headers used by RingCentral backend\n */\nexport interface RCHeaders {\n  body?: string;\n  reqid?: number;\n  sid?: string;\n  request?: string;\n  from?: string;\n  to?: string;\n  srvLvl?: string;\n  srvLvlExt?: string;\n  nm?: string;\n  toNm?: string;\n  callAttributes?: string;\n  srcIVRSiteName?: string;\n  queueName?: string;\n  queueExtPin?: string;\n  inDID?: string;\n  inDIDLabel?: string;\n  callerId?: string;\n  callerIdName?: string;\n  displayInfo?: string;\n  displayInfoSub?: string;\n}\n\nexport interface ReplyOptions {\n  replyType: number; // FIXME: Use enum\n  replyText: string;\n  timeValue?: string;\n  timeUnits?: string;\n  callbackDirection?: string;\n}\n\nexport interface RTCPeerConnectionLegacy extends RTCPeerConnection {\n  getRemoteStreams: () => MediaStream[];\n  getLocalStreams: () => MediaStream[];\n}\n\nexport class CommonSession {\n  /** @ignore */\n  public __isRecording?: boolean;\n  /** @ignore */\n  public __localHold?: boolean;\n  /** @ignore */\n  public __patched?: boolean;\n  /** @ignore */\n  public __userAgentCoreEventsSetup?: boolean;\n  /** Flag to check if the call is on hold or not */\n  public held?: boolean;\n  /** Options to represent dom elements where media stream should be loaded */\n  public media?: { local?: HTMLMediaElement; remote?: HTMLMediaElement };\n  /** Flag to indicate if media stats are being collected */\n  public mediaStatsStarted?: boolean;\n  /** MediaStreams class instance which has the logic to collect media stream stats */\n  public mediaStreams?: MediaStreams;\n  /** Flag to check if the call is muted or not */\n  public muted?: boolean;\n  /** Counter to represent how many media stats report were missed because of no audio */\n  public noAudioReportCount?: number;\n  /** JOSN representation of RC headers received for an incoming call */\n  public rcHeaders?: RCHeaders;\n  public __qosStats?: QosStats;\n  /** Flag to represent if reinvite request was sent because there was no audio reported */\n  public reinviteForNoAudioSent?: boolean;\n  /** Time when session was started */\n  public startTime?: Date | undefined;\n  /** @ignore */\n  public __accept?: typeof Invitation.prototype.accept;\n  /** @ignore */\n  public __dispose?: typeof Session.prototype.dispose;\n  /** Method to attach event listener for session specific events */\n  public addListener?: typeof EventEmitter.prototype.addListener;\n  /** Add track to media source */\n  public addTrack?: typeof addTrack;\n  /** RingCentral barge implementation */\n  public barge?: typeof barge;\n  /** RingCentral blind transfer implementation */\n  public blindTransfer?: typeof blindTransfer;\n  /**\n   * @internal\n   * Helper function which represents if call control features can be used or not\n   */\n  public canUseRCMCallControl?: typeof canUseRCMCallControl;\n  /**\n   * @internal\n   * Create session message which would be sent to the RingCentral backend\n   */\n  public createSessionMessage?: typeof createSessionMessage;\n  /** Sends a DTMF over the call */\n  public dtmf?: typeof dtmf;\n  /** Emit session specific events which will trigger all the event listeners attached */\n  public emit?: typeof EventEmitter.prototype.emit;\n  /** RingCentral flip implementation */\n  public flip?: typeof flip;\n  /** RingCentral flip implementation */\n  public forward?: typeof forward;\n  /** Put the call on hold */\n  public hold?: typeof hold;\n  /** Ignore incoming call */\n  public ignore?: typeof ignore;\n  /** Mute the call */\n  public mute?: typeof mute;\n  /** Remove event listener */\n  public off: typeof EventEmitter.prototype.off;\n  /** Add event listener. Same as addListener */\n  public on: typeof EventEmitter.prototype.on;\n  /** Add once event listener. Same as addListener */\n  public once: typeof EventEmitter.prototype.once;\n  /** Returns if the call is on hold locally or not */\n  public onLocalHold?: typeof onLocalHold;\n  /** RingCentral park implementation */\n  public park?: typeof park;\n  /** Send a session reinvite */\n  public reinvite?: typeof reinvite;\n  /** Remove event listener */\n  public removeListener?: typeof EventEmitter.prototype.removeListener;\n  /** Remove all event listeners */\n  public removeAllListeners?: typeof EventEmitter.prototype.removeAllListeners;\n  /** RingCentral reply with message implementation */\n  public replyWithMessage?: typeof replyWithMessage;\n  /**\n   * @internal\n   * Helper method that sends an INFO request to other user agent and then waits for an INFO request from the other user agent\n   */\n  public sendInfoAndReceiveResponse?: typeof sendInfoAndReceiveResponse;\n  /**\n   * @internal\n   * Helper function to send INFO request with `move` instruction to RingCentral backend\n   */\n  public sendMoveResponse?: typeof sendMoveResponse;\n  /** Send `receiveConfirm` command to backend */\n  public sendReceiveConfirm?: typeof sendReceiveConfirm;\n  /** Helper function to send session message to backend using UserAgent */\n  public sendSessionMessage?: typeof sendSessionMessage;\n  /** Start recording the call */\n  public startRecord?: typeof startRecord;\n  /** Function to stop collecting media stats */\n  public stopMediaStats?: typeof stopMediaStats;\n  /** Stop recording the call */\n  public stopRecord?: typeof stopRecord;\n  /** Send incoming call to voicemail */\n  public toVoicemail?: typeof toVoicemail;\n  /** Transfer current call */\n  public transfer?: typeof transfer;\n  /** Put the call on unhold */\n  public unhold?: typeof unhold;\n  /** Unmute the call */\n  public unmute?: typeof unmute;\n  /** RingCentral warm transfer implementation */\n  public warmTransfer?: typeof warmTransfer;\n  /** RingCentral whisper implementation */\n  public whisper?: typeof whisper;\n  public setQosStats?: typeof setQosStats;\n}\n\nexport type WebPhoneSession = WebPhoneInvitation | WebPhoneInviter;\n\n/** This is an extension of the Invitation class of SIP.js\n *\n * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.invitation.md)\n */\nexport interface WebPhoneInvitation extends Invitation, CommonSession {\n  /**\n   * Accept the invitation.\n   *\n   * @remarks\n   * Accept the incoming INVITE request to start a Session.\n   * Replies to the INVITE request with a 200 Ok response.\n   * Resolves once the response sent, otherwise rejects.\n   *\n   * This method may reject for a variety of reasons including\n   * the receipt of a CANCEL request before `accept` is able\n   * to construct a response.\n   * @param options - Options bucket.\n   */\n  accept: typeof Invitation.prototype.accept;\n  /**\n   * User Agent instance\n   */\n  userAgent: WebPhoneUserAgent;\n}\n\n/** This is an extension of the Inviter class of SIP.js\n *\n * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.inviter.md)\n */\nexport interface WebPhoneInviter extends Inviter, CommonSession {\n  /**\n   * User Agent instance\n   */\n  userAgent: WebPhoneUserAgent;\n}\n\nconst mediaCheckTimer = 2000;\n\nexport function patchWebphoneSession(session: WebPhoneSession): WebPhoneSession {\n  if (session.__patched) {\n    return session;\n  }\n  session.__patched = true;\n  session.held = false;\n  session.muted = false;\n  session.media = session.userAgent.media;\n  session.__dispose = session.dispose.bind(session);\n  session.dispose = dispose.bind(session);\n  const eventEmitter = new EventEmitter();\n  session.on = eventEmitter.on.bind(eventEmitter);\n  session.off = eventEmitter.off.bind(eventEmitter);\n  session.once = eventEmitter.once.bind(eventEmitter);\n  session.addListener = eventEmitter.addListener.bind(eventEmitter);\n  session.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  session.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n  session.emit = eventEmitter.emit.bind(eventEmitter);\n  session.sendInfoAndReceiveResponse = sendInfoAndReceiveResponse.bind(session);\n  session.startRecord = startRecord.bind(session);\n  session.stopRecord = stopRecord.bind(session);\n  session.sendMoveResponse = sendMoveResponse.bind(session);\n  session.park = park.bind(session);\n  session.flip = flip.bind(session);\n  session.whisper = whisper.bind(session);\n  session.barge = barge.bind(session);\n  session.mute = mute.bind(session);\n  session.unmute = unmute.bind(session);\n  session.addTrack = addTrack.bind(session);\n  session.stopMediaStats = stopMediaStats.bind(session);\n  session.warmTransfer = warmTransfer.bind(session);\n  session.blindTransfer = blindTransfer.bind(session);\n  session.transfer = transfer.bind(session);\n  session.hold = hold.bind(session);\n  session.unhold = unhold.bind(session);\n  session.dtmf = dtmf.bind(session);\n  session.reinvite = reinvite.bind(session);\n  session.forward = forward.bind(session); // FIXME: Not needed?\n  session.__qosStats = {};\n  session.setQosStats = setQosStats.bind(session);\n  setupUserAgentCoreEvent(session);\n  session.stateChange.addListener((newState) => {\n    switch (newState) {\n      case SessionState.Establishing: {\n        session.emit!(Events.Session.Establishing);\n        break;\n      }\n      case SessionState.Established: {\n        stopPlaying(session);\n        session.addTrack!();\n        session.emit!(Events.Session.Established);\n        break;\n      }\n      case SessionState.Terminating: {\n        stopPlaying(session);\n        stopMediaStreamStats(session);\n        session.emit!(Events.Session.Terminating);\n        break;\n      }\n      case SessionState.Terminated: {\n        stopPlaying(session);\n        session.emit!(Events.Session.Terminated);\n        break;\n      }\n    }\n  });\n\n  // FIXME: Do we need this? The replaced session is part of existing sessions and would have already been patched\n  // NEEDED - inviter.ts L191\n  // session.on(\"replaced\", patchWebphoneSession);\n\n  if (session.userAgent.onSession) {\n    session.userAgent.onSession(session);\n  }\n  session.mediaStatsStarted = false;\n  session.noAudioReportCount = 0;\n  session.reinviteForNoAudioSent = false;\n\n  return session;\n}\n\nexport function patchIncomingWebphoneSession(session: WebPhoneSession): void {\n  try {\n    parseRcHeader(session);\n  } catch (e) {\n    (session as any).logger.error(\"Can't parse RC headers from invite request due to \" + e);\n  }\n  session.canUseRCMCallControl = canUseRCMCallControl.bind(session);\n  session.createSessionMessage = createSessionMessage.bind(session);\n  session.ignore = ignore.bind(session);\n  session.replyWithMessage = replyWithMessage.bind(session);\n  session.sendReceiveConfirm = sendReceiveConfirm.bind(session);\n  session.sendSessionMessage = sendSessionMessage.bind(session);\n  session.toVoicemail = toVoicemail.bind(session);\n  session.__accept = (session as Invitation).accept.bind(session);\n  (session as WebPhoneInvitation).accept = accept.bind(session);\n  setupUserAgentCoreEvent(session);\n}\n\nfunction canUseRCMCallControl(this: WebPhoneSession): boolean {\n  return !!this.rcHeaders;\n}\n\nfunction createSessionMessage(this: WebPhoneSession, options: RCHeaders): string {\n  if (!this.rcHeaders) {\n    throw Error('createSessionMessage options is undefined');\n  }\n  extend(options, {\n    sid: this.rcHeaders.sid,\n    request: this.rcHeaders.request,\n    from: this.rcHeaders.to,\n    to: this.rcHeaders.from,\n  });\n  return this.userAgent.createRcMessage!(options);\n}\n\nasync function sendReceiveConfirm(this: WebPhoneSession): Promise<IncomingResponse> {\n  return this.sendSessionMessage!(messages.receiveConfirm as unknown as RCHeaders)\n    .then((response) => {\n      (this as any).logger.log('sendReceiveConfirm success');\n      return response;\n    })\n    .catch((error) =>\n      (this as any).logger.error(`failed to send receive confirmation via SIP MESSAGE due to ${error.message}`),\n    );\n}\n\nfunction sendSessionMessage(this: WebPhoneSession, options: RCHeaders): Promise<IncomingResponse> {\n  if (!this.rcHeaders) {\n    (this as any).logger.error(\"Can't send SIP MESSAGE related to session: no RC headers available\");\n  }\n  return this.userAgent.sendMessage!(this.rcHeaders!.from!, this.createSessionMessage!(options));\n}\n\nasync function sendInfoAndReceiveResponse(this: WebPhoneSession, command: Command, _options?: any): Promise<any> {\n  const options = _options || {};\n  extend(command, options);\n  delete command.extraHeaders;\n  return new Promise((resolve, reject) => {\n    const requestDelegate: OutgoingRequestDelegate = {\n      onAccept: (response: IncomingResponse): void => {\n        let timeout: ReturnType<typeof setTimeout> | undefined;\n        const {\n          message: { statusCode, callId },\n        } = response;\n        if (statusCode === 200) {\n          const onInfo = (message: IncomingRequestMessage): void => {\n            // FIXME: I think we need this check here\n            if (message.callId !== callId) {\n              return;\n            }\n            const body = message?.body || '{}';\n            let obj;\n\n            try {\n              obj = JSON.parse(body);\n            } catch (e) {\n              obj = {};\n            }\n            if (obj.response && obj.response.command === command.command && obj.response.result) {\n              timeout && clearTimeout(timeout);\n              this.off!('RC_SIP_INFO', onInfo);\n              if (obj.response.result.code.toString() === '0') {\n                return resolve(obj.response.result);\n              }\n              return reject(obj.response.result);\n            }\n          };\n          timeout = setTimeout(() => {\n            reject(new Error('Timeout: no reply'));\n            this.off!('RC_SIP_INFO', onInfo);\n          }, responseTimeout);\n          this.on!('RC_SIP_INFO', onInfo);\n        } else {\n          reject(new Error(`The INFO response status code is: ${statusCode} (waiting for 200)`));\n        }\n      },\n      onReject: (response) => {\n        reject(new Error(`The INFO response status code is: ${response.message.statusCode} (waiting for 200)`));\n      },\n    };\n    const requestOptions: RequestOptions = {\n      extraHeaders: [...(options.extraHeaders || []), ...this.userAgent.defaultHeaders],\n      body: fromBodyLegacy({\n        body: JSON.stringify({ request: command }),\n        contentType: 'application/json;charset=utf-8',\n      }),\n    };\n    this.info({ requestDelegate, requestOptions });\n  });\n}\n\nasync function startRecord(this: WebPhoneSession): Promise<any> {\n  return setRecord(this, true);\n}\n\nasync function stopRecord(this: WebPhoneSession): Promise<any> {\n  return setRecord(this, false);\n}\n\n// eslint-disable-next-line max-params\nfunction sendMoveResponse(\n  this: WebPhoneSession,\n  reqId: number,\n  code: number,\n  description: string,\n  options: { extraHeaders?: Array<string> } = {},\n): void {\n  const extraHeaders = options.extraHeaders || [];\n  const requestOptions: RequestOptions = {\n    extraHeaders: [...extraHeaders, ...this.userAgent.defaultHeaders],\n    body: fromBodyLegacy({\n      body: JSON.stringify({\n        response: {\n          reqId,\n          command: 'move',\n          result: {\n            code,\n            description,\n          },\n        },\n      }),\n      contentType: 'application/json;charset=utf-8',\n    }),\n  };\n  this.info({ requestOptions });\n}\n\nfunction ignore(this: WebPhoneSession): Promise<IncomingResponse> {\n  return this.sendReceiveConfirm!().then(() => this.sendSessionMessage!(messages.ignore));\n}\n\nfunction toVoicemail(this: WebPhoneSession): Promise<IncomingResponse> {\n  return this.sendReceiveConfirm!().then(() => this.sendSessionMessage!(messages.toVoicemail));\n}\n\nfunction replyWithMessage(this: WebPhoneSession, replyOptions: ReplyOptions): Promise<IncomingResponse> {\n  let body = 'RepTp=\"' + replyOptions.replyType + '\"';\n\n  if (replyOptions.replyType === 0) {\n    body += ' Bdy=\"' + replyOptions.replyText + '\"';\n  } else if (replyOptions.replyType === 1 || replyOptions.replyType === 4) {\n    body += ' Vl=\"' + replyOptions.timeValue + '\"';\n    body += ' Units=\"' + replyOptions.timeUnits + '\"';\n    body += ' Dir=\"' + replyOptions.callbackDirection + '\"';\n  }\n  return this.sendReceiveConfirm!().then(() =>\n    this.sendSessionMessage!({ reqid: messages.replyWithMessage.reqid, body }),\n  );\n}\n\nasync function flip(this: WebPhoneSession, target: string): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.flip, { target });\n}\n\nasync function whisper(this: WebPhoneSession): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.whisper);\n}\n\nasync function barge(this: WebPhoneSession): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.barge);\n}\n\nfunction park(this: WebPhoneSession): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.park);\n}\n\nfunction mute(this: WebPhoneSession, silent?: boolean): void {\n  if (this.state !== SessionState.Established) {\n    (this as any).logger.warn('An active session is required to mute audio');\n    return;\n  }\n  if (this.muted) {\n    (this as any).logger.debug('Session already muted');\n    return;\n  }\n  (this as any).logger.log('Muting Audio');\n  enableSenderTracks(this, false);\n  this.muted = true;\n  if (!silent) {\n    this.emit!(Events.Session.Muted, this);\n  }\n}\n\nfunction unmute(this: WebPhoneSession, silent?: boolean): void {\n  if (this.state !== SessionState.Established) {\n    (this as any).logger.warn('An active session is required to unmute audio');\n    return;\n  }\n  if (!this.muted) {\n    (this as any).logger.debug('Session not muted');\n    return;\n  }\n  (this as any).logger.log('Unmuting Audio');\n  enableSenderTracks(this, true);\n  this.muted = false;\n  if (!silent) {\n    this.emit!(Events.Session.Unmuted, this);\n  }\n}\n\nfunction addTrack(this: WebPhoneSession, remoteAudioEle?: HTMLVideoElement, localAudioEle?: HTMLVideoElement): void {\n  const sessionDescriptionHandler = this.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  let remoteAudio: HTMLMediaElement;\n  let localAudio: HTMLMediaElement;\n\n  if (remoteAudioEle && localAudioEle) {\n    remoteAudio = remoteAudioEle;\n    localAudio = localAudioEle;\n  } else if (this.media) {\n    remoteAudio = this.media.remote!;\n    localAudio = this.media.local!;\n  } else {\n    throw new Error('HTML Media Element not Defined');\n  }\n\n  // TODO: peerConnecton.remoteMediaStream already has reciver track added thanks to default session description handler. Can we remove this code?\n  let remoteStream = new MediaStream();\n  if (peerConnection?.getReceivers) {\n    peerConnection.getReceivers().forEach((receiver) => {\n      const rtrack = receiver.track;\n      if (rtrack) {\n        remoteStream.addTrack(rtrack);\n        (this as any).logger.log('Remote track added');\n      }\n    });\n  } else {\n    remoteStream = sessionDescriptionHandler.remoteMediaStream;\n    (this as any).logger.log('Remote track added');\n  }\n  remoteAudio.srcObject = remoteStream;\n  remoteAudio.play().catch(() => {\n    (this as any).logger.error('Remote play was rejected');\n  });\n\n  // TODO: peerConnecton.localMediaStream already has sender track added thanks to default session description handler. Can we remove this code?\n  let localStream = new MediaStream();\n  if (peerConnection?.getSenders) {\n    peerConnection.getSenders().forEach((sender) => {\n      const strack = sender.track;\n      if (strack && strack.kind === 'audio') {\n        localStream.addTrack(strack);\n        (this as any).logger.log('Local track added');\n      }\n    });\n  } else {\n    localStream = sessionDescriptionHandler.localMediaStream;\n    (this as any).logger.log('Local track added');\n  }\n  localAudio.srcObject = localStream;\n  localAudio.play().catch(() => {\n    (this as any).logger.error('Local play was rejected');\n  });\n\n  if (localStream && remoteStream && !this.mediaStatsStarted) {\n    this.mediaStreams = new MediaStreams(this);\n    (this as any).logger.log('Start gathering media report');\n    this.mediaStatsStarted = true;\n    this.mediaStreams.getMediaStats((report: RTPReport) => {\n      if (this.userAgent.enableMediaReportLogging) {\n        (this as any).logger.log(`Got media report: ${JSON.stringify(report)}`);\n      }\n      if (!this.reinviteForNoAudioSent && isNoAudio(report)) {\n        (this as any).logger.log('No audio report');\n        this.noAudioReportCount!++;\n        if (this.noAudioReportCount === 3) {\n          (this as any).logger.log('No audio for 6 sec. Trying to recover audio by sending Re-invite');\n          this.mediaStreams!.reconnectMedia();\n          this.reinviteForNoAudioSent = true;\n          this.noAudioReportCount = 0;\n        }\n      } else if (!isNoAudio(report)) {\n        this.noAudioReportCount = 0;\n      }\n    }, mediaCheckTimer);\n  }\n}\n\nfunction stopMediaStats(this: WebPhoneSession): void {\n  (this as any).logger.log('Stopping media stats collection');\n  if (!this) {\n    return;\n  }\n  this.mediaStreams?.stopMediaStats();\n  this.mediaStatsStarted = false;\n  this.noAudioReportCount = 0;\n}\n\nasync function blindTransfer(\n  this: WebPhoneSession,\n  target: string | URI | WebPhoneSession,\n  options: SessionReferOptions = {},\n): Promise<OutgoingReferRequest> {\n  (this as any).logger.log('Call transfer initiated');\n  const newTarget =\n    typeof target === 'string' ? UserAgent.makeURI(`sip:${target}@${this.userAgent.sipInfo!.domain}`)! : target;\n  return this.refer(newTarget, options);\n}\n\nasync function warmTransfer(\n  this: WebPhoneSession,\n  target: string | URI | WebPhoneSession,\n  options: SessionReferOptions = { requestOptions: { extraHeaders: [] } },\n): Promise<OutgoingReferRequest> {\n  options.requestOptions!.extraHeaders = (options.requestOptions!.extraHeaders || []).concat(\n    this.userAgent.defaultHeaders,\n  );\n  const newTarget =\n    typeof target === 'string' ? UserAgent.makeURI(`sip:${target}@${this.userAgent.sipInfo!.domain}`)! : target;\n  (this as any).logger.log('Completing warm transfer');\n  return this.refer(newTarget, options);\n}\n\nasync function transfer(\n  this: WebPhoneSession,\n  target: string | URI | WebPhoneSession,\n  options: SessionReferOptions = {},\n): Promise<OutgoingReferRequest> {\n  if (!options.requestOptions) {\n    options.requestOptions = {};\n  }\n  if (!options.requestOptions.extraHeaders) {\n    options.requestOptions.extraHeaders = [];\n  }\n  options.requestOptions.extraHeaders = [...options.requestOptions.extraHeaders, ...this.userAgent.defaultHeaders];\n  return this.blindTransfer!(target, options);\n}\n\n/**\n *\n * @param this WebPhoneSessionSessionInviteOptions\n * @param options\n * @returns Promise<OutgoingInviteRequest>\n *\n * Sends a reinvite. Also makes sure to regenerate a new SDP by passing offerToReceiveAudio: true, offerToReceiveVideo: false  and iceRestart: true\n * Once the SDP is ready, the local description is set and the SDP is sent to the remote peer along with an INVITE request\n */\nfunction reinvite(this: WebPhoneSession, options: SessionInviteOptions = {}): Promise<OutgoingInviteRequest> {\n  options.sessionDescriptionHandlerOptions = {\n    ...options.sessionDescriptionHandlerOptions,\n    offerToReceiveAudio: true,\n    offerToReceiveVideo: false,\n    iceRestart: true,\n  } as any;\n  options.requestDelegate = options.requestDelegate || {};\n  const originalOnAccept = options.requestDelegate.onAccept?.bind(options.requestDelegate);\n  options.requestDelegate.onAccept = (...args): void => {\n    patchIncomingWebphoneSession(this);\n    originalOnAccept?.(...args);\n  };\n  return this.invite(options);\n}\n\nasync function hold(this: WebPhoneSession): Promise<void> {\n  this.stopMediaStats!();\n  try {\n    (this as any).logger.log('Hold Initiated');\n    await setHold(this, true);\n    (this as any).logger.log('Hold completed, held is set to true');\n  } catch (e) {\n    throw new Error('Hold could not be completed');\n  }\n}\n\nasync function unhold(this: WebPhoneSession): Promise<void> {\n  try {\n    (this as any).logger.log('Unhold Initiated');\n    await setHold(this, false);\n    (this as any).logger.log('Unhold completed, held is set to false');\n  } catch (e) {\n    throw new Error('Unhold could not be completed');\n  }\n  this.addTrack(this.media.remote as HTMLVideoElement, this.media.local as HTMLVideoElement);\n}\n\n// eslint-disable-next-line max-params\nfunction dtmf(this: WebPhoneSession, dtmf: string, _duration = 100, _interToneGap = 50): void {\n  const duration = parseInt(_duration.toString(), 10);\n  const interToneGap = parseInt(_interToneGap.toString(), 10);\n  const sessionDescriptionHandler = this.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  if (!peerConnection) {\n    (this as any).logger.error('Peer connection closed.');\n    return;\n  }\n  const senders = peerConnection.getSenders();\n  const audioSender = senders.find((sender) => sender.track && sender.track.kind === 'audio');\n  const dtmfSender: RTCDTMFSender | null = audioSender!.dtmf;\n  if (dtmfSender !== undefined && dtmfSender) {\n    (this as any).logger.log(`Send DTMF: ${dtmf} Duration: ${duration} InterToneGap: ${interToneGap}`);\n    return dtmfSender.insertDTMF(dtmf, duration, interToneGap);\n  }\n  throw new Error('Send DTMF failed');\n}\n\nasync function accept(this: WebPhoneSession, _options: InvitationAcceptOptions = {}): Promise<void> {\n  const options = _options || {};\n  options.extraHeaders = (options.extraHeaders || []).concat(this.userAgent.defaultHeaders);\n  options.sessionDescriptionHandlerOptions = {\n    ...options.sessionDescriptionHandlerOptions,\n  };\n  options.sessionDescriptionHandlerOptions.constraints = options.sessionDescriptionHandlerOptions.constraints || {\n    ...this.userAgent.constraints,\n    optional: [{ DtlsSrtpKeyAgreement: 'true' }],\n  };\n  try {\n    await this.__accept!(options);\n    this.startTime = new Date();\n    this.emit!(Events.Session.Accepted, this.request);\n  } catch (e) {\n    if ((e as any).message.indexOf('Permission denied') !== -1) {\n      this.emit!(Events.Session.UserMediaFailed);\n    }\n  }\n}\n\n// eslint-disable-next-line max-params\nasync function forward(\n  this: WebPhoneSession,\n  target: WebPhoneSession,\n  acceptOptions: InvitationAcceptOptions = {},\n  transferOptions: SessionReferOptions = {},\n): Promise<OutgoingReferRequest> {\n  await (this as WebPhoneInvitation).accept(acceptOptions);\n  return new Promise((resolve) => {\n    this.mute!();\n    setTimeout(() => {\n      resolve(this.transfer!(target, transferOptions));\n    }, 700);\n  });\n}\n\nasync function dispose(this: WebPhoneSession) {\n  stopMediaStreamStats(this);\n  this.__dispose!();\n}\n\n/* ---------------------------------------------------------- HELPER FUNCTIONS ---------------------------------------------------------- */\n\nfunction parseRcHeaderString(str = ''): { [key: string]: string } {\n  const pairs = str.split(/; */).filter((pair) => pair.includes('=')); // skip things that don't look like key=value\n  const result: { [key: string]: string } = {};\n  for (const pair of pairs) {\n    let [key, value] = pair.split('=');\n    key = key.trim();\n    value = value.trim();\n    if (!(key in result)) {\n      result[key] = value;\n    }\n  }\n  return result;\n}\n\nfunction parseRcHeader(session: WebPhoneSession): void {\n  const prc = session.request.getHeader('P-Rc');\n  const prcCallInfo = session.request.getHeader('P-Rc-Api-Call-Info');\n  if (prc) {\n    const parser = new DOMParser();\n    const xmlDoc = parser.parseFromString(prc, 'text/xml');\n    const hdrNode = xmlDoc.getElementsByTagName('Hdr')[0];\n    const bdyNode = xmlDoc.getElementsByTagName('Bdy')[0];\n\n    if (hdrNode) {\n      session.rcHeaders = {\n        sid: hdrNode.getAttribute('SID') || undefined,\n        request: hdrNode.getAttribute('Req') || undefined,\n        from: hdrNode.getAttribute('From') || undefined,\n        to: hdrNode.getAttribute('To') || undefined,\n      };\n    }\n    if (bdyNode) {\n      extend(session.rcHeaders, {\n        srvLvl: bdyNode.getAttribute('SrvLvl'),\n        srvLvlExt: bdyNode.getAttribute('SrvLvlExt'),\n        nm: bdyNode.getAttribute('Nm'),\n        toNm: bdyNode.getAttribute('ToNm'),\n      });\n    }\n  }\n  if (prcCallInfo) {\n    const parsed = parseRcHeaderString(prcCallInfo);\n    extend(session.rcHeaders, parsed);\n  }\n}\n\nasync function setRecord(session: WebPhoneSession, flag: boolean): Promise<any> {\n  const message = flag ? messages.startRecord : messages.stopRecord;\n\n  if ((session.__isRecording && !flag) || (!session.__isRecording && flag)) {\n    const data = await session.sendInfoAndReceiveResponse!(message);\n    session.__isRecording = !!flag;\n    return data;\n  }\n}\n\nfunction enableReceiverTracks(session: WebPhoneSession, enable: boolean): void {\n  const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  if (!peerConnection) {\n    (session as any).logger.error('Peer connection closed.');\n    return;\n  }\n\n  peerConnection.getReceivers().forEach((receiver) => {\n    if (receiver.track) {\n      receiver.track.enabled = enable;\n    }\n  });\n}\n\nfunction enableSenderTracks(session: WebPhoneSession, enable: boolean): void {\n  const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  if (!peerConnection) {\n    (session as any).logger.error('Peer connection closed.');\n    return;\n  }\n\n  peerConnection.getSenders().forEach((sender) => {\n    if (sender.track) {\n      sender.track.enabled = enable;\n    }\n  });\n}\n\nfunction setHold(session: WebPhoneSession, hold: boolean): Promise<void> {\n  return new Promise((resolve, reject) => {\n    // Just resolve if we are already in correct state\n    if (session.held === hold) {\n      resolve();\n      return;\n    }\n\n    const options: SessionInviteOptions = {\n      requestDelegate: {\n        onAccept: async (response): Promise<void> => {\n          session.held = hold;\n          const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n          const peerConnection = sessionDescriptionHandler.peerConnection;\n          const localSdp = peerConnection!.localDescription!.sdp;\n          const match = localSdp.match(/a=(sendrecv|sendonly|recvonly|inactive)/);\n          const direction = match ? match[1] : '';\n          session.__localHold = response.message.statusCode === 200 && direction === 'sendonly';\n          (session as any).logger.log('localhold is set to ' + session.__localHold);\n          enableReceiverTracks(session, !session.held);\n          enableSenderTracks(session, !session.held && !session.muted);\n          resolve();\n        },\n        onReject: (): void => {\n          (session as any).logger.warn('re-invite request was rejected');\n          enableReceiverTracks(session, !session.held);\n          enableSenderTracks(session, !session.held && !session.muted);\n          reject(new Error('re-invite request was rejected'));\n        },\n      },\n    };\n\n    // Session properties used to pass options to the SessionDescriptionHandler:\n    //\n    // 1) Session.sessionDescriptionHandlerOptions\n    //    SDH options for the initial INVITE transaction.\n    //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n    //    - May be set directly at anytime.\n    //    - May optionally be set via constructor option.\n    //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n    //\n    // 2) Session.sessionDescriptionHandlerOptionsReInvite\n    //    SDH options for re-INVITE transactions.\n    //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n    //    - May be set directly at anytime.\n    //    - May optionally be set via constructor option.\n    //    - May optionally be set via options passed to Session.invite().\n\n    const sessionDescriptionHandlerOptions =\n      session.sessionDescriptionHandlerOptionsReInvite as SessionDescriptionHandlerOptions;\n    sessionDescriptionHandlerOptions.hold = hold;\n    session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n\n    // Send re-INVITE\n    session\n      .invite(options)\n      .then(() => {\n        // preemptively enable/disable tracks\n        enableReceiverTracks(session, !hold);\n        enableSenderTracks(session, !hold && !session.muted);\n      })\n      .catch((error: Error) => {\n        if (error instanceof RequestPendingError) {\n          (session as any).logger.error('A hold request is already in progress.');\n        }\n        reject(error);\n      });\n  });\n}\n\nfunction stopPlaying(session: WebPhoneSession): void {\n  session.userAgent.audioHelper!.playOutgoing(false);\n  session.userAgent.audioHelper!.playIncoming(false);\n}\n\nexport function onSessionDescriptionHandlerCreated(session: WebPhoneSession): void {\n  if (!session.userAgent.enableQos) {\n    return;\n  }\n  (session as any).logger.log('SessionDescriptionHandler created');\n  startQosStatsCollection(session);\n  navigator.mediaDevices.enumerateDevices().then((devices) => {\n    devices.forEach((device) =>\n      (session as any).logger.log(`${device.kind} = ${device.label} ${JSON.stringify(device)}`),\n    );\n  });\n}\n\nfunction setupUserAgentCoreEvent(session: WebPhoneSession) {\n  if (session.__userAgentCoreEventsSetup) {\n    return;\n  }\n  const userAgentCore: WehPhoneUserAgentCore = session.userAgent.userAgentCore;\n  userAgentCore.on!(Events.Session.UpdateReceived, (payload) => session.emit!(Events.Session.UpdateReceived, payload));\n  userAgentCore.on!(Events.Session.MoveToRcv, (payload) => session.emit!(Events.Session.MoveToRcv, payload));\n  // RC_SIP_INFO event is for internal use\n  userAgentCore.on!('RC_SIP_INFO', (payload) => session.emit!('RC_SIP_INFO', payload));\n  session.__userAgentCoreEventsSetup = true;\n}\n\nfunction stopMediaStreamStats(session: WebPhoneSession) {\n  if (session.mediaStreams) {\n    (session as any).logger.log('Releasing media streams');\n    session.mediaStreams.release();\n  }\n}\n\nfunction onLocalHold(this: WebPhoneSession): boolean {\n  return this.__localHold!;\n}\n\nfunction setQosStats(this: WebPhoneSession, stats: QosStats) {\n  this.__qosStats!.cpuOS = stats.cpuOS || '0:0:0';\n  this.__qosStats!.cpuRC = stats.cpuRC || '0:0:0';\n  this.__qosStats!.ram = stats.ram || '0:0:0';\n  this.__qosStats!.netType = stats.netType || undefined;\n}\n","export const uuid = (): string =>\n  'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {\n    const r = (Math.random() * 16) | 0;\n    const v = c === 'x' ? r : (r & 0x3) | 0x8;\n    return v.toString(16);\n  });\n\nexport const extend = (dst: any = {}, src: any = {}): any => Object.assign(dst || {}, src || {});\n","export interface Command {\n  reqid: number;\n  command: string;\n  extraHeaders?: Array<string>;\n}\n\nexport const messages = {\n  park: { reqid: 1, command: 'callpark' },\n  startRecord: { reqid: 2, command: 'startcallrecord' },\n  stopRecord: { reqid: 3, command: 'stopcallrecord' },\n  flip: { reqid: 3, command: 'callflip', target: '' },\n  monitor: { reqid: 4, command: 'monitor' },\n  barge: { reqid: 5, command: 'barge' },\n  whisper: { reqid: 6, command: 'whisper' },\n  takeover: { reqid: 7, command: 'takeover' },\n  toVoicemail: { reqid: 11, command: 'toVoicemail' },\n  ignore: { reqid: 12, command: 'ignore' },\n  receiveConfirm: { reqid: 17, command: 'receiveConfirm' },\n  replyWithMessage: { reqid: 14, command: 'replyWithMessage' },\n};\n\nexport const uuidKey = 'rc-webPhone-uuid';\n\nexport const responseTimeout = 60000;\n\nexport const defaultMediaConstraints = {\n  audio: true,\n  video: false,\n};\n\nexport const defaultStunServers = ['stun.l.google.com:19302'];\nexport const defaultSipErrorCodes = ['408', '502', '503', '504'];\nexport const defaultLogLevel = 'debug';\n","/*\n * @Author: Elias Sun(elias.sun@ringcentral.com)\n * @Date: Dec. 15, 2018\n * Copyright © RingCentral. All rights reserved.\n */\n\nimport type { SessionDescriptionHandler } from 'sip.js/lib/platform/web';\nimport type { WebPhoneSession } from './session';\nimport type { RTPReport } from './rtpReport';\nimport { Events } from './events';\n\nenum ConnectionState {\n  new = 'mediaConnectionStateNew',\n  checking = 'mediaConnectionStateChecking',\n  connected = 'mediaConnectionStateConnected',\n  completed = 'mediaConnectionStateCompleted',\n  failed = 'mediaConnectionStateFailed',\n  disconnected = 'mediaConnectionStateDisconnected',\n  closed = 'mediaConnectionStateClosed',\n}\n\nexport enum Browsers {\n  MSIE = 'IE',\n  Chrome = 'Chrome',\n  Firefox = 'Firefox',\n  Safari = 'Safari',\n  Opera = 'Opera',\n}\n\nexport class WebPhoneRTPReport implements RTPReport {\n  public outboundRtpReport = {};\n  public inboundRtpReport = {};\n  public rttMs = {};\n  public localCandidates: any[] = [];\n  public remoteCandidates: any[] = [];\n  public transport = {};\n}\n\n/** Media Streams class to monitor media stats */\nexport default class MediaStreams {\n  /**\n   * Reference to MediaStreamsImpl object. This Object has all the functions to handle media streams\n   *\n   * MediaStreams class is a wrapper around MediaStreamsImpl\n   */\n  public mediaStreamsImpl: MediaStreamsImpl;\n  /** Remove iceconnectionstatechange event listeners and stop collecting stats */\n  public release: any;\n  /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */\n  public reconnectMedia: any;\n  /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */\n  public getMediaStats: (callback: (report: RTPReport) => any, interval: number) => void;\n  /** Stop collecting stats */\n  public stopMediaStats: () => void;\n\n  public constructor(session: WebPhoneSession) {\n    this.mediaStreamsImpl = new MediaStreamsImpl(session);\n    this.release = this.mediaStreamsImpl.release.bind(this.mediaStreamsImpl);\n    this.reconnectMedia = this.mediaStreamsImpl.reconnectMedia.bind(this.mediaStreamsImpl);\n    this.getMediaStats = this.mediaStreamsImpl.getMediaStats.bind(this.mediaStreamsImpl);\n    this.stopMediaStats = this.mediaStreamsImpl.stopMediaStats.bind(this.mediaStreamsImpl);\n  }\n\n  /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */\n  public set onRTPStat(callback: (stats: RTPReport, session: WebPhoneSession) => any) {\n    this.mediaStreamsImpl.onRTPStat = callback;\n  }\n  public get onRTPStat() {\n    return this.mediaStreamsImpl.onRTPStat;\n  }\n\n  /**\n   * Set a function to be called when `peerConnetion` iceconnectionstatechange changes\n   * @param callback function to be called when `peerConnetion` iceconnectionstatechange changes\n   */\n  public set onMediaConnectionStateChange(callback: (state: string, session: WebPhoneSession) => any) {\n    this.mediaStreamsImpl.onMediaConnectionStateChange = callback;\n  }\n  public get onMediaConnectionStateChange() {\n    return this.mediaStreamsImpl.onMediaConnectionStateChange;\n  }\n}\n\n/**\n * MediaStreams Implementation\n */\nexport class MediaStreamsImpl {\n  public preRTT: any;\n  /**\n   * Set a function to be called when `peerConnection` iceconnectionstatechange changes\n   *\n   * @param callback function to be called when `peerConnection` iceconnectionstatechange changes\n   */\n  public onMediaConnectionStateChange?: (state: string, session: WebPhoneSession) => any;\n  /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */\n  public onRTPStat?: (stats: RTPReport, session: WebPhoneSession) => any;\n\n  private ktag = 'MediaStreams';\n  private session: WebPhoneSession;\n  private isChrome: boolean;\n  private isFirefox: boolean;\n  private isSafari: boolean;\n  private mediaStatsTimer: any;\n\n  public constructor(session: WebPhoneSession) {\n    this.ktag = 'MediaStreams';\n    if (!session) {\n      throw new Error(`${this.ktag}: Cannot initial media stream monitoring. Session is not passed`);\n    }\n    this.session = session;\n    this.onMediaConnectionStateChange = undefined;\n    this.onPeerConnectionStateChange = this.onPeerConnectionStateChange.bind(this);\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    sessionDescriptionHandler.peerConnection!.addEventListener(\n      'iceconnectionstatechange',\n      this.onPeerConnectionStateChange,\n    );\n    this.isChrome = this.browser() === Browsers.Chrome;\n    this.isFirefox = this.browser() === Browsers.Firefox;\n    this.isSafari = this.browser() === Browsers.Safari;\n\n    this.preRTT = { currentRoundTripTime: 0 };\n\n    if (!this.isChrome && !this.isFirefox && !this.isSafari) {\n      (this.session as any).logger.error(\n        `${this.ktag} The web browser ${this.browser()} is not in the recommended list [Chrome, Safari, Firefox] !`,\n      );\n    }\n  }\n\n  /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */\n  public getMediaStats(callback?: (report: RTPReport) => any, interval = 1000) {\n    if (!this.onRTPStat && !callback) {\n      (this.session as any).logger.debug(\n        `${this.ktag}: No event callback provided to call when media starts are generated`,\n      );\n      return;\n    }\n    if (callback) {\n      this.onRTPStat = callback;\n    }\n    if (this.mediaStatsTimer) {\n      clearTimeout(this.mediaStatsTimer);\n      this.mediaStatsTimer = null;\n    }\n    this.mediaStatsTimer = setInterval(() => {\n      this.mediaStatsTimerCallback();\n    }, interval);\n  }\n\n  /**\n   * Stop collecting stats. This will stop calling the registered function (either that was registered using `onRTPstat` or using `getMediaStats`)\n   */\n  public stopMediaStats() {\n    if (this.mediaStatsTimer) {\n      clearTimeout(this.mediaStatsTimer);\n      this.onRTPStat = undefined;\n    }\n  }\n\n  /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */\n  public reconnectMedia(): Promise<void> {\n    return new Promise((resolve, reject) => {\n      this.session.reinvite!()\n        .then(() => resolve())\n        .catch(reject);\n    });\n  }\n\n  /**\n   * Remove iceconnectionstatechange event listeners and stop collecting stats\n   */\n  public release() {\n    if (this.mediaStatsTimer) {\n      clearTimeout(this.mediaStatsTimer);\n      this.mediaStatsTimer = null;\n    }\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    if (!sessionDescriptionHandler.peerConnection) {\n      return;\n    }\n    sessionDescriptionHandler.peerConnection.removeEventListener(\n      'iceconnectionstatechange',\n      this.onPeerConnectionStateChange,\n    );\n  }\n\n  private get tag() {\n    return this.ktag;\n  }\n\n  /**\n   * Function to find what browser is being used depending on the `navigator.userAgent` value\n   * @returns Browsers enum value to denote what browser if being used\n   */\n  public browser() {\n    if (navigator.userAgent.search('MSIE') >= 0) {\n      return Browsers.MSIE;\n    } else if (navigator.userAgent.search('Chrome') >= 0) {\n      return Browsers.Chrome;\n    } else if (navigator.userAgent.search('Firefox') >= 0) {\n      return Browsers.Firefox;\n    } else if (navigator.userAgent.search('Safari') >= 0 && navigator.userAgent.search('Chrome') < 0) {\n      return Browsers.Safari;\n    } else if (navigator.userAgent.search('Opera') >= 0) {\n      return Browsers.Opera;\n    }\n    return 'unknown';\n  }\n\n  private mediaStatsTimerCallback() {\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n      (this.session as any).logger.error(`${this.ktag}: The peer connection cannot be null`);\n      return;\n    }\n    const connectionState = peerConnection.iceConnectionState;\n    if (connectionState !== 'connected' && connectionState !== 'completed') {\n      this.preRTT.currentRoundTripTime = 0;\n      return;\n    }\n    this.getRTPReport(new WebPhoneRTPReport());\n  }\n\n  private onPeerConnectionStateChange() {\n    let eventName = 'unknown';\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    const state = sessionDescriptionHandler.peerConnection!.iceConnectionState;\n    if (Object.hasOwn(ConnectionState, state)) {\n      eventName = ConnectionState[state];\n      if (this.onMediaConnectionStateChange) {\n        this.onMediaConnectionStateChange(eventName, this.session);\n      }\n      this.session.emit!(eventName);\n    } else {\n      (this.session as any).logger.debug(`${this.tag}: Unknown peerConnection state: ${state}`);\n    }\n    (this.session as any).logger.debug(`${this.tag}: peerConnection State: ${state}`);\n  }\n\n  private async getRTPReport(report: RTPReport) {\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection!;\n    try {\n      const stats = await peerConnection.getStats();\n      stats.forEach((stat: { [key: string]: any }) => {\n        switch (stat.type) {\n          case 'inbound-rtp':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'bytesReceived':\n                case 'packetsReceived':\n                case 'jitter':\n                case 'packetsLost':\n                case 'fractionLost':\n                case 'mediaType':\n                  (report.inboundRtpReport as any)[statName] = stat[statName];\n                  break;\n                case 'roundTripTime':\n                  report.rttMs[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          case 'outbound-rtp':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'bytesSent':\n                case 'packetsSent':\n                case 'mediaType':\n                  (report.outboundRtpReport as any)[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          case 'candidate-pair':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'currentRoundTripTime':\n                  report.rttMs[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          case 'local-candidate': {\n            const local_candidate: { [key: string]: number } = {};\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'id':\n                case 'isRemote':\n                case 'ip':\n                case 'candidateType':\n                case 'networkType':\n                case 'priority':\n                case 'port':\n                  local_candidate[statName] = stat[statName];\n                  break;\n              }\n            });\n            report.localCandidates!.push(local_candidate);\n            break;\n          }\n          case 'remote-candidate': {\n            const remote_candidate: { [key: string]: number } = {};\n            Object.keys(stat).forEach((statName: string) => {\n              switch (statName) {\n                case 'id':\n                case 'isRemote':\n                case 'ip':\n                case 'priority':\n                case 'port':\n                case 'candidateType':\n                  remote_candidate[statName] = stat[statName];\n                  break;\n              }\n            });\n            report.remoteCandidates!.push(remote_candidate);\n            break;\n          }\n          case 'media-source':\n            report.outboundRtpReport.rtpLocalAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n            break;\n          case 'track':\n            if (!stat.remoteSource) {\n              break;\n            }\n            report.inboundRtpReport.rtpRemoteAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n            break;\n          case 'transport':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'dtlsState':\n                case 'packetsSent':\n                case 'packetsReceived':\n                case 'selectedCandidatePairChanges':\n                case 'selectedCandidatePairId':\n                  report.transport[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          default:\n            break;\n        }\n      });\n\n      if (!Object.hasOwn(report.rttMs, 'currentRoundTripTime')) {\n        if (!Object.hasOwn(report.rttMs, 'roundTripTime')) {\n          report.rttMs.currentRoundTripTime = this.preRTT.currentRoundTripTime;\n        } else {\n          report.rttMs.currentRoundTripTime = report.rttMs.roundTripTime; // for Firefox\n          delete report.rttMs.roundTripTime;\n        }\n      } else {\n        report.rttMs.currentRoundTripTime = Math.round(report.rttMs.currentRoundTripTime! * 1000);\n      }\n\n      if (Object.hasOwn(report.rttMs, 'currentRoundTripTime')) {\n        this.preRTT.currentRoundTripTime = report.rttMs.currentRoundTripTime;\n      }\n      this.onRTPStat!(report, this.session);\n      this.session.emit!(Events.Session.RTPStat, report);\n    } catch (e) {\n      (this.session as any).logger.error(`${this.tag}: Unable to get media stats: ${(e as any).message}`);\n    }\n  }\n}\n\nexport { MediaStreams };\n","export interface RTPReport {\n  outboundRtpReport: OutboundRtpReport;\n  inboundRtpReport: InboundRtpReport;\n  rttMs: RttReport;\n  localCandidates?: object[];\n  remoteCandidates?: object[];\n  transport?: any;\n}\n\nexport interface InboundRtpReport {\n  mediaType?: string;\n  packetsReceived?: number;\n  bytesReceived?: number;\n  packetsLost?: number;\n  jitter?: number;\n  fractionLost?: number;\n  roundTripTime?: number;\n  rtpRemoteAudioLevel?: number;\n}\n\nexport interface OutboundRtpReport {\n  mediaType?: string;\n  packetsSent?: number;\n  bytesSent?: number;\n  rtpLocalAudioLevel?: number;\n}\n\nexport interface RttReport {\n  currentRoundTripTime?: number;\n  roundTripTime?: number;\n}\n\nexport function isNoAudio(report: RTPReport): boolean {\n  if (!report.inboundRtpReport) {\n    return true;\n  }\n  if (!report.outboundRtpReport) {\n    return true;\n  }\n  if (report.inboundRtpReport.packetsReceived === 0 || report.outboundRtpReport.packetsSent === 0) {\n    return true;\n  }\n  return false;\n}\n","import { SessionState, Publisher, UserAgent } from 'sip.js';\n\nimport type { WebPhoneSession } from './session';\nimport type { SessionDescriptionHandler } from 'sip.js/lib/platform/web';\nimport { Events } from './events';\n\nconst formatFloat = (input: any): string => parseFloat(input.toString()).toFixed(2);\n\nexport const startQosStatsCollection = (session: WebPhoneSession): void => {\n  const qosStatsObj = getQoSStatsTemplate();\n\n  qosStatsObj.callID = session.request.callId || '';\n  qosStatsObj.fromTag = session.request.fromTag || '';\n  qosStatsObj.toTag = session.request.toTag || '';\n  qosStatsObj.localID = session.request.getHeader('From')!;\n  qosStatsObj.remoteID = session.request.getHeader('To')!;\n  qosStatsObj.origID = session.request.getHeader('From')!;\n\n  const refreshIntervalId = setInterval(async () => {\n    const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n    if (!sessionDescriptionHandler?.peerConnection) {\n      (session as any).logger.error('There is no PeerConnection, can not getStats');\n      return;\n    }\n    const getStatsResult = await sessionDescriptionHandler.peerConnection.getStats();\n    (session as any).logger.log(`getStatsResult ${JSON.stringify(getStatsResult)}`);\n    qosStatsObj.status = true;\n    let network = '';\n    getStatsResult.forEach((item: any) => {\n      switch (item.type) {\n        case 'local-candidate':\n          if (item.candidateType === 'srflx') {\n            network = typeof item.networkType === 'string' ? item.networkType : getNetworkType(item.networkType);\n            qosStatsObj.localAddr = item.ip + ':' + item.port;\n            qosStatsObj.localcandidate = item;\n          }\n          break;\n        case 'remote-candidate':\n          if (item.candidateType === 'host') {\n            qosStatsObj.remoteAddr = item.ip + ':' + item.port;\n            qosStatsObj.remotecandidate = item;\n          }\n          break;\n        case 'inbound-rtp': {\n          qosStatsObj.jitterBufferDiscardRate = item.packetsDiscarded / item.packetsReceived;\n          qosStatsObj.inboundPacketsLost = item.packetsLost;\n          qosStatsObj.inboundPacketsReceived = item.packetsReceived; // packetsReceived\n          const jitterBufferMs: number =\n            parseFloat(item.jitterBufferEmittedCount) > 0\n              ? (parseFloat(item.jitterBufferDelay) / parseFloat(item.jitterBufferEmittedCount)) * 1000\n              : 0;\n          qosStatsObj.totalSumJitter += jitterBufferMs;\n          qosStatsObj.totalIntervalCount += 1;\n          qosStatsObj.NLR = formatFloat((item.packetsLost / (item.packetsLost + item.packetsReceived)) * 100);\n          qosStatsObj.JBM = Math.max(qosStatsObj.JBM, jitterBufferMs);\n          qosStatsObj.netType = addToMap(qosStatsObj.netType, network);\n          break;\n        }\n        case 'candidate-pair':\n          qosStatsObj.RTD = Math.round((item.currentRoundTripTime / 2) * 1000);\n          break;\n        case 'outbound-rtp':\n          qosStatsObj.outboundPacketsSent = item.packetsSent;\n          break;\n        case 'remote-inbound-rtp':\n          qosStatsObj.outboundPacketsLost = item.packetsLost;\n          break;\n        default:\n          break;\n      }\n    });\n  }, session.userAgent.qosCollectInterval);\n\n  session.stateChange.addListener((newState) => {\n    if (newState === SessionState.Terminated) {\n      (session as any).logger.log('Release media streams');\n      session.mediaStreams?.release();\n      publishQosStats(session, qosStatsObj);\n      refreshIntervalId && clearInterval(refreshIntervalId);\n    }\n  });\n};\n\nconst publishQosStats = async (session: WebPhoneSession, qosStatsObj: QosStats, _options: any = {}): Promise<void> => {\n  const options = _options || {};\n\n  const targetUrl = options.targetUrl || 'sip:rtcpxr@rtcpxr.ringcentral.com:5060';\n  const event = options.event || 'vq-rtcpxr';\n  options.expires = 60;\n  options.contentType = 'application/vq-rtcpxr';\n  options.extraHeaders = (options.extraHeaders || []).concat(session.userAgent.defaultHeaders);\n  const cpuOS = session.__qosStats!.cpuOS;\n  const cpuRC = session.__qosStats!.cpuRC;\n  const ram = session.__qosStats!.ram;\n  const networkType = session.__qosStats!.netType || calculateNetworkUsage(qosStatsObj) || '';\n  let effectiveType = '';\n  if ('connection' in navigator) {\n    effectiveType = (navigator as any).connection.effectiveType;\n  }\n  options.extraHeaders.push(\n    `p-rc-client-info:cpuRC=${cpuRC};cpuOS=${cpuOS};netType=${networkType};ram=${ram};effectiveType=${effectiveType}`,\n  );\n  (session as any).logger.log(`QOS stats ${JSON.stringify(qosStatsObj)}`);\n  const calculatedStatsObj = calculateStats(qosStatsObj);\n  const body = createPublishBody(calculatedStatsObj);\n  const publisher = new Publisher(session.userAgent, UserAgent.makeURI(targetUrl)!, event, options);\n  await publisher.publish(body);\n  (session as any).logger.log('Local Candidate: ' + JSON.stringify(qosStatsObj.localcandidate));\n  (session as any).logger.log('Remote Candidate: ' + JSON.stringify(qosStatsObj.remotecandidate));\n  qosStatsObj.status = false;\n  await publisher.dispose();\n  session.emit!(Events.Session.QOSPublished, body);\n};\n\nconst calculateNetworkUsage = (qosStatsObj: QosStats): string => {\n  const networkType = [];\n  for (const [key, value] of Object.entries(qosStatsObj.netType)) {\n    networkType.push(key + ':' + formatFloat(((value as any) * 100) / qosStatsObj.totalIntervalCount));\n  }\n  return networkType.join();\n};\n\nconst calculateStats = (qosStatsObj: QosStats): QosStats => {\n  const rawNLR =\n    (qosStatsObj.inboundPacketsLost * 100) / (qosStatsObj.inboundPacketsReceived + qosStatsObj.inboundPacketsLost) || 0;\n  const rawJBN = qosStatsObj.totalIntervalCount > 0 ? qosStatsObj.totalSumJitter / qosStatsObj.totalIntervalCount : 0;\n\n  return {\n    ...qosStatsObj,\n    NLR: formatFloat(rawNLR),\n    JBN: formatFloat(rawJBN), // JitterBufferNominal\n    JDR: formatFloat(qosStatsObj.jitterBufferDiscardRate), // JitterBufferDiscardRate\n    MOSLQ: calculateMos(\n      qosStatsObj.inboundPacketsLost / (qosStatsObj.inboundPacketsLost + qosStatsObj.inboundPacketsReceived),\n    ),\n    MOSCQ: calculateMos(\n      qosStatsObj.outboundPacketsLost / (qosStatsObj.outboundPacketsLost + qosStatsObj.outboundPacketsSent),\n    ),\n  };\n};\n\nconst createPublishBody = (calculatedStatsObj: QosStats): string => {\n  const NLR = calculatedStatsObj.NLR || 0;\n  const JBM = calculatedStatsObj.JBM || 0;\n  const JBN = calculatedStatsObj.JBN || 0;\n  const JDR = calculatedStatsObj.JDR || 0;\n  const MOSLQ = calculatedStatsObj.MOSLQ || 0;\n  const MOSCQ = calculatedStatsObj.MOSCQ || 0;\n  const RTD = calculatedStatsObj.RTD || 0;\n\n  const callID = calculatedStatsObj.callID || '';\n  const fromTag = calculatedStatsObj.fromTag || '';\n  const toTag = calculatedStatsObj.toTag || '';\n  const localId = calculatedStatsObj.localID || '';\n  const remoteId = calculatedStatsObj.remoteID || '';\n\n  const localAddr = calculatedStatsObj.localAddr || '';\n  const remoteAddr = calculatedStatsObj.remoteAddr || '';\n\n  return (\n    'VQSessionReport: CallTerm\\r\\n' +\n    `CallID: ${callID}\\r\\n` +\n    `LocalID: ${localId}\\r\\n` +\n    `RemoteID: ${remoteId}\\r\\n` +\n    `OrigID: ${localId}\\r\\n` +\n    `LocalAddr: IP=${localAddr} SSRC=0x00000000\\r\\n` +\n    `RemoteAddr: IP=${remoteAddr} SSRC=0x00000000\\r\\n` +\n    'LocalMetrics:\\r\\n' +\n    'Timestamps: START=0 STOP=0\\r\\n' +\n    'SessionDesc: PT=0 PD=opus SR=0 FD=0 FPP=0 PPS=0 PLC=0 SSUP=on\\r\\n' +\n    `JitterBuffer: JBA=0 JBR=0 JBN=${JBN} JBM=${formatFloat(JBM)} JBX=0\\r\\n` +\n    `PacketLoss: NLR=${NLR} JDR=${JDR}\\r\\n` +\n    'BurstGapLoss: BLD=0 BD=0 GLD=0 GD=0 GMIN=0\\r\\n' +\n    `Delay: RTD=${RTD} ESD=0 SOWD=0 IAJ=0\\r\\n` +\n    `QualityEst: MOSLQ=${formatFloat(MOSLQ)} MOSCQ=${formatFloat(MOSCQ)}\\r\\n` +\n    `DialogID: ${callID};to-tag=${toTag};from-tag=${fromTag}`\n  );\n};\n\nconst getQoSStatsTemplate = (): QosStats => ({\n  localAddr: '',\n  remoteAddr: '',\n  callID: '',\n  localID: '',\n  remoteID: '',\n  origID: '',\n  fromTag: '',\n  toTag: '',\n  timestamp: {\n    start: '',\n    stop: '',\n  },\n\n  netType: {},\n\n  jitterBufferNominal: 0,\n  jitterBufferMax: 0,\n\n  jitterBufferDiscardRate: 0,\n\n  totalSumJitter: 0,\n  totalIntervalCount: 0,\n\n  NLR: '',\n  JBM: 0,\n  JBN: '',\n  JDR: '',\n  MOSLQ: 0,\n  MOSCQ: 0,\n  RTD: 0,\n\n  status: false,\n  localcandidate: {},\n  remotecandidate: {},\n\n  inboundPacketsLost: 0,\n  inboundPacketsReceived: 0,\n  outboundPacketsLost: 0,\n  outboundPacketsSent: 0,\n});\n\nconst addToMap = (map: any = {}, key: string): any => ({\n  ...map,\n  [key]: (key in map ? parseInt(map[key], 10) : 0) + 1,\n});\n\nconst networkTypeMap: { [key: string]: string } = {\n  bluetooth: 'Bluetooth',\n  cellular: 'Cellulars',\n  ethernet: 'Ethernet',\n  wifi: 'WiFi',\n  vpn: 'VPN',\n  wimax: 'WiMax',\n  '2g': '2G',\n  '3g': '3G',\n  '4g': '4G',\n};\n\n// TODO: find reliable way to find network type , use navigator.connection.type?\nconst getNetworkType = (connectionType: any): string => {\n  const sysNetwork: string = connectionType.systemNetworkType || 'unknown';\n  const localNetwork: string = connectionType || 'unknown';\n  const networkType: string = !sysNetwork || sysNetwork === 'unknown' ? localNetwork : sysNetwork;\n  return networkType in networkTypeMap ? networkTypeMap[networkType] : networkType;\n};\n\nexport interface QosStats {\n  localAddr: string;\n  remoteAddr: string;\n  callID: string;\n  localID: string;\n  remoteID: string;\n  origID: string;\n  fromTag: string;\n  toTag: string;\n  timestamp: {\n    start: string;\n    stop: string;\n  };\n\n  netType: any;\n\n  jitterBufferNominal: number;\n  jitterBufferMax: number;\n\n  jitterBufferDiscardRate: number;\n\n  totalSumJitter: number;\n  totalIntervalCount: number;\n\n  NLR: string;\n  JBM: number;\n  JBN: string;\n  JDR: string;\n  MOSLQ: number;\n  MOSCQ: number;\n  RTD: number;\n\n  status: boolean;\n\n  localcandidate: any;\n  remotecandidate: any;\n\n  inboundPacketsLost: number;\n  inboundPacketsReceived: number;\n  outboundPacketsLost: number;\n  outboundPacketsSent: number;\n}\n\nfunction calculateMos(packetLoss: number) {\n  if (packetLoss <= 0.008) {\n    return 4.5;\n  }\n  if (packetLoss > 0.45) {\n    return 1.0;\n  }\n  const bpl = 17.2647;\n  const r = 93.2062077233 - 95.0 * ((packetLoss * 100) / (packetLoss * 100 + bpl)) + 4;\n  let mos = 2.06405 + 0.031738 * r - 0.000356641 * r * r + 2.93143 * Math.pow(10, -6) * r * r * r;\n  if (mos < 1) {\n    return 1.0;\n  }\n  if (mos > 4.5) {\n    return 4.5;\n  }\n  if (packetLoss >= 0.35 && mos > 2.7) {\n    mos = 2.7;\n  } else if (packetLoss >= 0.3 && mos > 3.0) {\n    mos = 3.0;\n  } else if (packetLoss >= 0.2 && mos > 3.6) {\n    mos = 3.6;\n  } else if (packetLoss >= 0.15 && mos > 3.7) {\n    mos = 3.7;\n  } else if (packetLoss >= 0.1 && mos > 3.9) {\n    mos = 4.1;\n  } else if (packetLoss >= 0.05 && mos > 4.1) {\n    mos = 4.3;\n  } else if (packetLoss >= 0.03 && mos > 4.1) {\n    mos = 4.4;\n  }\n  return mos;\n}\n","import { fromBodyLegacy } from \"../core/messages/body.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { PublisherState } from \"./publisher-state.js\";\n/**\n * A publisher publishes a publication (outgoing PUBLISH).\n * @public\n */\nexport class Publisher {\n    /**\n     * Constructs a new instance of the `Publisher` class.\n     *\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param eventType - The event type identifying the published document.\n     * @param options - Options bucket. See {@link PublisherOptions} for details.\n     */\n    constructor(userAgent, targetURI, eventType, options = {}) {\n        this.disposed = false;\n        /** The publication state. */\n        this._state = PublisherState.Initial;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        this.userAgent = userAgent;\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.contentType = options.contentType || \"text/plain\";\n        if (typeof options.expires !== \"number\" || options.expires % 1 !== 0) {\n            options.expires = 3600;\n        }\n        else {\n            options.expires = Number(options.expires);\n        }\n        if (typeof options.unpublishOnClose !== \"boolean\") {\n            options.unpublishOnClose = true;\n        }\n        this.target = targetURI;\n        this.event = eventType;\n        this.options = options;\n        this.pubRequestExpires = options.expires;\n        this.logger = userAgent.getLogger(\"sip.Publisher\");\n        const params = options.params || {};\n        const fromURI = params.fromUri ? params.fromUri : userAgent.userAgentCore.configuration.aor;\n        const toURI = params.toUri ? params.toUri : targetURI;\n        let body;\n        if (options.body && options.contentType) {\n            const contentDisposition = \"render\";\n            const contentType = options.contentType;\n            const content = options.body;\n            body = {\n                contentDisposition,\n                contentType,\n                content\n            };\n        }\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage(C.PUBLISH, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // Identifier\n        this.id = this.target.toString() + \":\" + this.event;\n        // Add to the user agent's publisher collection.\n        this.userAgent._publishers[this.id] = this;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        this.logger.log(`Publisher ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's publisher collection\n        delete this.userAgent._publishers[this.id];\n        // Send unpublish, if requested\n        if (this.options.unpublishOnClose && this.state === PublisherState.Published) {\n            return this.unpublish();\n        }\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        this.pubRequestEtag = undefined;\n        return Promise.resolve();\n    }\n    /** The publication state. */\n    get state() {\n        return this._state;\n    }\n    /** Emits when the publisher state changes. */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * Publish.\n     * @param content - Body to publish\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    publish(content, options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // is Initial or Modify request\n        this.options.body = content;\n        this.pubRequestBody = this.options.body;\n        if (this.pubRequestExpires === 0) {\n            // This is Initial request after unpublish\n            if (this.options.expires === undefined) {\n                throw new Error(\"Expires undefined.\");\n            }\n            this.pubRequestExpires = this.options.expires;\n            this.pubRequestEtag = undefined;\n        }\n        this.sendPublishRequest();\n        return Promise.resolve();\n    }\n    /**\n     * Unpublish.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    unpublish(options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        if (this.pubRequestEtag !== undefined) {\n            this.sendPublishRequest();\n        }\n        return Promise.resolve();\n    }\n    /** @internal */\n    receiveResponse(response) {\n        const statusCode = response.statusCode || 0;\n        switch (true) {\n            case /^1[0-9]{2}$/.test(statusCode.toString()):\n                break;\n            case /^2[0-9]{2}$/.test(statusCode.toString()):\n                // Set SIP-Etag\n                if (response.hasHeader(\"SIP-ETag\")) {\n                    this.pubRequestEtag = response.getHeader(\"SIP-ETag\");\n                }\n                else {\n                    this.logger.warn(\"SIP-ETag header missing in a 200-class response to PUBLISH\");\n                }\n                // Update Expire\n                if (response.hasHeader(\"Expires\")) {\n                    const expires = Number(response.getHeader(\"Expires\"));\n                    if (typeof expires === \"number\" && expires >= 0 && expires <= this.pubRequestExpires) {\n                        this.pubRequestExpires = expires;\n                    }\n                    else {\n                        this.logger.warn(\"Bad Expires header in a 200-class response to PUBLISH\");\n                    }\n                }\n                else {\n                    this.logger.warn(\"Expires header missing in a 200-class response to PUBLISH\");\n                }\n                if (this.pubRequestExpires !== 0) {\n                    // Schedule refresh\n                    this.publishRefreshTimer = setTimeout(() => this.refreshRequest(), this.pubRequestExpires * 900);\n                    if (this._state !== PublisherState.Published) {\n                        this.stateTransition(PublisherState.Published);\n                    }\n                }\n                else {\n                    this.stateTransition(PublisherState.Unpublished);\n                }\n                break;\n            case /^412$/.test(statusCode.toString()):\n                // 412 code means no matching ETag - possibly the PUBLISH expired\n                // Resubmit as new request, if the current request is not a \"remove\"\n                if (this.pubRequestEtag !== undefined && this.pubRequestExpires !== 0) {\n                    this.logger.warn(\"412 response to PUBLISH, recovering\");\n                    this.pubRequestEtag = undefined;\n                    if (this.options.body === undefined) {\n                        throw new Error(\"Body undefined.\");\n                    }\n                    this.publish(this.options.body);\n                }\n                else {\n                    this.logger.warn(\"412 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition(PublisherState.Unpublished);\n                    this.stateTransition(PublisherState.Terminated);\n                }\n                break;\n            case /^423$/.test(statusCode.toString()):\n                // 423 code means we need to adjust the Expires interval up\n                if (this.pubRequestExpires !== 0 && response.hasHeader(\"Min-Expires\")) {\n                    const minExpires = Number(response.getHeader(\"Min-Expires\"));\n                    if (typeof minExpires === \"number\" || minExpires > this.pubRequestExpires) {\n                        this.logger.warn(\"423 code in response to PUBLISH, adjusting the Expires value and trying to recover\");\n                        this.pubRequestExpires = minExpires;\n                        if (this.options.body === undefined) {\n                            throw new Error(\"Body undefined.\");\n                        }\n                        this.publish(this.options.body);\n                    }\n                    else {\n                        this.logger.warn(\"Bad 423 response Min-Expires header received for PUBLISH\");\n                        this.pubRequestExpires = 0;\n                        this.stateTransition(PublisherState.Unpublished);\n                        this.stateTransition(PublisherState.Terminated);\n                    }\n                }\n                else {\n                    this.logger.warn(\"423 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition(PublisherState.Unpublished);\n                    this.stateTransition(PublisherState.Terminated);\n                }\n                break;\n            default:\n                this.pubRequestExpires = 0;\n                this.stateTransition(PublisherState.Unpublished);\n                this.stateTransition(PublisherState.Terminated);\n                break;\n        }\n        // Do the cleanup\n        if (this.pubRequestExpires === 0) {\n            if (this.publishRefreshTimer) {\n                clearTimeout(this.publishRefreshTimer);\n                this.publishRefreshTimer = undefined;\n            }\n            this.pubRequestBody = undefined;\n            this.pubRequestEtag = undefined;\n        }\n    }\n    /** @internal */\n    send() {\n        return this.userAgent.userAgentCore.publish(this.request, {\n            onAccept: (response) => this.receiveResponse(response.message),\n            onProgress: (response) => this.receiveResponse(response.message),\n            onRedirect: (response) => this.receiveResponse(response.message),\n            onReject: (response) => this.receiveResponse(response.message),\n            onTrying: (response) => this.receiveResponse(response.message)\n        });\n    }\n    refreshRequest() {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // This is Refresh request\n        this.pubRequestBody = undefined;\n        if (this.pubRequestEtag === undefined) {\n            throw new Error(\"Etag undefined\");\n        }\n        if (this.pubRequestExpires === 0) {\n            throw new Error(\"Expires zero\");\n        }\n        this.sendPublishRequest();\n    }\n    sendPublishRequest() {\n        const reqOptions = Object.assign({}, this.options);\n        reqOptions.extraHeaders = (this.options.extraHeaders || []).slice();\n        reqOptions.extraHeaders.push(\"Event: \" + this.event);\n        reqOptions.extraHeaders.push(\"Expires: \" + this.pubRequestExpires);\n        if (this.pubRequestEtag !== undefined) {\n            reqOptions.extraHeaders.push(\"SIP-If-Match: \" + this.pubRequestEtag);\n        }\n        const ruri = this.target;\n        const params = this.options.params || {};\n        let bodyAndContentType;\n        if (this.pubRequestBody !== undefined) {\n            if (this.options.contentType === undefined) {\n                throw new Error(\"Content type undefined.\");\n            }\n            bodyAndContentType = {\n                body: this.pubRequestBody,\n                contentType: this.options.contentType\n            };\n        }\n        let body;\n        if (bodyAndContentType) {\n            body = fromBodyLegacy(bodyAndContentType);\n        }\n        this.request = this.userAgent.userAgentCore.makeOutgoingRequestMessage(C.PUBLISH, ruri, params.fromUri ? params.fromUri : this.userAgent.userAgentCore.configuration.aor, params.toUri ? params.toUri : this.target, params, reqOptions.extraHeaders, body);\n        return this.send();\n    }\n    /**\n     * Transition publication state.\n     */\n    stateTransition(newState) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch (this._state) {\n            case PublisherState.Initial:\n                if (newState !== PublisherState.Published &&\n                    newState !== PublisherState.Unpublished &&\n                    newState !== PublisherState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case PublisherState.Published:\n                if (newState !== PublisherState.Unpublished && newState !== PublisherState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case PublisherState.Unpublished:\n                if (newState !== PublisherState.Published && newState !== PublisherState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case PublisherState.Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Publication transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === PublisherState.Terminated) {\n            this.dispose();\n        }\n    }\n}\n","/**\n * {@link Publisher} state.\n * @remarks\n * The {@link Publisher} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                  __________________________________________\n *                 |  __________________________              |\n * Publisher       | |                          v             v\n * Constructed -> Initial -> Published -> Unpublished -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */\nexport var PublisherState;\n(function (PublisherState) {\n    PublisherState[\"Initial\"] = \"Initial\";\n    PublisherState[\"Published\"] = \"Published\";\n    PublisherState[\"Unpublished\"] = \"Unpublished\";\n    PublisherState[\"Terminated\"] = \"Terminated\";\n})(PublisherState = PublisherState || (PublisherState = {}));\n","import { EventEmitter } from 'events';\n\nimport type { UserAgentCore, IncomingRequestMessage } from 'sip.js/lib/core';\nimport { C } from 'sip.js/lib/core';\nimport { Events } from './events';\n\nimport type { WebPhoneUserAgent } from './userAgent';\n\nexport type WehPhoneUserAgentCore = UserAgentCore & {\n  _receiveIncomingRequestFromTransport?: typeof UserAgentCore.prototype.receiveIncomingRequestFromTransport;\n  addListener?: typeof EventEmitter.prototype.addListener;\n  emit?: typeof EventEmitter.prototype.emit;\n  off?: typeof EventEmitter.prototype.off;\n  on?: typeof EventEmitter.prototype.on;\n  removeListener?: typeof EventEmitter.prototype.removeListener;\n};\n\n/** @ignore */\nexport function patchUserAgentCore(userAgent: WebPhoneUserAgent) {\n  const userAgentCore: WehPhoneUserAgentCore = userAgent.userAgentCore;\n  const eventEmitter = new EventEmitter();\n  userAgentCore.on = eventEmitter.on.bind(eventEmitter);\n  userAgentCore.off = eventEmitter.off.bind(eventEmitter);\n  userAgentCore.addListener = eventEmitter.addListener.bind(eventEmitter);\n  userAgentCore.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  userAgentCore.emit = eventEmitter.emit.bind(eventEmitter);\n  userAgentCore._receiveIncomingRequestFromTransport = userAgentCore.receiveIncomingRequestFromTransport.bind(\n    userAgent.userAgentCore,\n  );\n  userAgentCore.receiveIncomingRequestFromTransport = receiveIncomingRequestFromTransport.bind(userAgent.userAgentCore);\n}\n\nfunction receiveIncomingRequestFromTransport(this: WehPhoneUserAgentCore, message: IncomingRequestMessage): void {\n  switch (message.method) {\n    case C.UPDATE: {\n      (this as any).logger.log('Receive UPDATE request. Do nothing just return 200 OK');\n      this.replyStateless(message, { statusCode: 200 });\n      this.emit!(Events.Session.UpdateReceived, message);\n      return;\n    }\n    case C.INFO: {\n      // For the Move2RCV request from server\n      const content = getIncomingInfoContent(message);\n      if (content?.request?.reqId && content?.request?.command === 'move' && content?.request?.target === 'rcv') {\n        this.replyStateless(message, { statusCode: 200 });\n        this.emit!(Events.Session.MoveToRcv, content.request);\n        return;\n      }\n      // For other SIP INFO from server\n      this.emit!('RC_SIP_INFO', message);\n      // SIP.js does not support application/json content type, so we monkey override its behavior in this case\n      const contentType = message.getHeader('content-type')!;\n      if (contentType.match(/^application\\/json/i)) {\n        this.replyStateless(message, { statusCode: 200 });\n        return;\n      }\n      break;\n    }\n  }\n  return (this as any)._receiveIncomingRequestFromTransport(message);\n}\n\nfunction getIncomingInfoContent(message: IncomingRequestMessage): any {\n  if (!message?.body) {\n    return {};\n  }\n  let ret = {};\n  try {\n    ret = JSON.parse(message.body);\n  } catch (e) {\n    return {};\n  }\n  return ret;\n}\n","import type {\n  BodyAndContentType,\n  Session,\n  SessionDescriptionHandler as SessionDescriptionHandlerDefinition,\n  SessionDescriptionHandlerModifier,\n} from 'sip.js';\nimport type { Logger } from 'sip.js/lib/core';\nimport type { MediaStreamFactory } from 'sip.js/lib/platform/web/session-description-handler/media-stream-factory';\nimport type { SessionDescriptionHandlerConfiguration } from 'sip.js/lib/platform/web/session-description-handler/session-description-handler-configuration';\nimport type { SessionDescriptionHandlerOptions } from 'sip.js/lib/platform/web/session-description-handler/session-description-handler-options';\nimport type { PeerConnectionDelegate } from 'sip.js/lib/platform/web/session-description-handler/peer-connection-delegate';\nimport type { SessionDescriptionHandlerFactoryOptions } from 'sip.js/lib/platform/web';\n\ntype ResolveFunction = () => void;\ntype RejectFunction = (reason: Error) => void;\n\n/**\n * Extension of SessionDescriptionHandlerConfiguration with additional options\n */\nexport interface WebPhoneSessionDescriptionHandlerConfiguration extends SessionDescriptionHandlerConfiguration {\n  /** Enable DSCP by setting packet priority in SDP */\n  enableDscp?: boolean;\n}\n\n/**\n * Extension of SessionDescriptionHandlerFactoryOptions with additional options\n */\nexport interface WebPhoneSessionDescriptionHandlerFactoryOptions extends SessionDescriptionHandlerFactoryOptions {\n  /** Enable DSCP by setting packet priority in SDP */\n  enableDscp?: boolean;\n}\n\n/**\n * A base class implementing a WebRTC session description handler for sip.js.\n * @remarks\n * It is expected/intended to be extended by specific WebRTC based applications.\n * @privateRemarks\n * So do not put application specific implementation in here.\n * @public\n */\nexport class SessionDescriptionHandler implements SessionDescriptionHandlerDefinition {\n  // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n  // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n  private static dispatchAddTrackEvent(stream: MediaStream, track: MediaStreamTrack): void {\n    stream.dispatchEvent(new MediaStreamTrackEvent('addtrack', { track }));\n  }\n  // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n  // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n  private static dispatchRemoveTrackEvent(stream: MediaStream, track: MediaStreamTrack): void {\n    stream.dispatchEvent(new MediaStreamTrackEvent('removetrack', { track }));\n  }\n\n  /** Logger. */\n  protected logger: Logger;\n  /** Media stream factory. */\n  protected mediaStreamFactory: MediaStreamFactory;\n  /** Configuration options. */\n  protected sessionDescriptionHandlerConfiguration?: WebPhoneSessionDescriptionHandlerConfiguration;\n\n  /** The local media stream. */\n  protected _localMediaStream: MediaStream;\n  /** The remote media stream. */\n  protected _remoteMediaStream: MediaStream;\n  /** The data channel. Undefined before created. */\n  protected _dataChannel: RTCDataChannel | undefined;\n  /** The peer connection. Undefined after SessionDescriptionHandler.close(). */\n  protected _peerConnection: RTCPeerConnection | undefined;\n  /** The peer connection delegate. */\n  protected _peerConnectionDelegate: PeerConnectionDelegate | undefined;\n\n  private iceGatheringCompletePromise: Promise<void> | undefined;\n  private iceGatheringCompleteTimeoutId: ReturnType<typeof setTimeout> | undefined;\n  private iceGatheringCompleteResolve: ResolveFunction | undefined;\n  private iceGatheringCompleteReject: RejectFunction | undefined;\n  private localMediaStreamConstraints: MediaStreamConstraints | undefined;\n  private onDataChannel: ((dataChannel: RTCDataChannel) => void) | undefined;\n\n  /**\n   * Constructor\n   * @param logger - A logger\n   * @param mediaStreamFactory - A factory to provide a MediaStream\n   * @param options - Options passed from the SessionDescriptionHandleFactory\n   */\n  public constructor(\n    logger: Logger,\n    mediaStreamFactory: MediaStreamFactory,\n    sessionDescriptionHandlerConfiguration?: WebPhoneSessionDescriptionHandlerConfiguration,\n  ) {\n    logger.debug('SessionDescriptionHandler.constructor');\n    this.logger = logger;\n    this.mediaStreamFactory = mediaStreamFactory;\n    this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n    this._localMediaStream = new MediaStream();\n    this._remoteMediaStream = new MediaStream();\n    this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration?.peerConnectionConfiguration);\n    this.initPeerConnectionEventHandlers();\n  }\n\n  /**\n   * The local media stream currently being sent.\n   *\n   * @remarks\n   * The local media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * local media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */\n  public get localMediaStream(): MediaStream {\n    return this._localMediaStream;\n  }\n\n  /**\n   * The remote media stream currently being received.\n   *\n   * @remarks\n   * The remote media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * remote media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */\n  public get remoteMediaStream(): MediaStream {\n    return this._remoteMediaStream;\n  }\n\n  /**\n   * The data channel. Undefined before it is created.\n   */\n  public get dataChannel(): RTCDataChannel | undefined {\n    return this._dataChannel;\n  }\n\n  /**\n   * The peer connection. Undefined if peer connection has closed.\n   *\n   * @remarks\n   * While access to the underlying `RTCPeerConnection` is provided, note that\n   * using methods with modify it may break the operation of this class.\n   * In particular, this class depends on exclusive access to the\n   * event handler properties. If you need access to the peer connection\n   * events, either register for events using `addEventListener()` on\n   * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n   * this `SessionDescriptionHandler`.\n   */\n  public get peerConnection(): RTCPeerConnection | undefined {\n    return this._peerConnection;\n  }\n\n  /**\n   * A delegate which provides access to the peer connection event handlers.\n   *\n   * @remarks\n   * Setting the peer connection event handlers directly is not supported\n   * and may break this class. As this class depends on exclusive access\n   * to them, a delegate may be set which provides alternative access to\n   * the event handlers in a fashion which is supported.\n   */\n  public get peerConnectionDelegate(): PeerConnectionDelegate | undefined {\n    return this._peerConnectionDelegate;\n  }\n\n  public set peerConnectionDelegate(delegate: PeerConnectionDelegate | undefined) {\n    this._peerConnectionDelegate = delegate;\n  }\n\n  /**\n   * Stop tracks and close peer connection.\n   */\n  public close(): void {\n    this.logger.debug('SessionDescriptionHandler.close');\n    if (this._peerConnection === undefined) {\n      return;\n    }\n    this._peerConnection.getReceivers().forEach((receiver) => {\n      receiver.track?.stop();\n    });\n    this._peerConnection.getSenders().forEach((sender) => {\n      sender.track?.stop();\n    });\n    if (this._dataChannel) {\n      this._dataChannel.close();\n    }\n    this._peerConnection.close();\n    this._peerConnection = undefined;\n  }\n\n  /**\n   * Creates an offer or answer.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */\n  public getDescription(\n    options?: SessionDescriptionHandlerOptions,\n    modifiers?: Array<SessionDescriptionHandlerModifier>,\n  ): Promise<BodyAndContentType> {\n    this.logger.debug('SessionDescriptionHandler.getDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    // Callback on data channel creation\n    this.onDataChannel = options?.onDataChannel;\n\n    // ICE will restart upon applying an offer created with the iceRestart option\n    const iceRestart = options?.offerOptions?.iceRestart;\n\n    // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n    const iceTimeout =\n      options?.iceGatheringTimeout === undefined\n        ? this.sessionDescriptionHandlerConfiguration?.iceGatheringTimeout\n        : options?.iceGatheringTimeout;\n\n    return this.getLocalMediaStream(options)\n      .then(() => this.enableSenderDscp())\n      .then(() => this.updateDirection(options))\n      .then(() => this.createDataChannel(options))\n      .then(() => this.createLocalOfferOrAnswer(options))\n      .then((sessionDescription) => this.applyModifiers(sessionDescription, modifiers))\n      .then((sessionDescription) => this.setLocalSessionDescription(sessionDescription))\n      .then(() => this.waitForIceGatheringComplete(iceRestart, iceTimeout))\n      .then(() => this.getLocalSessionDescription())\n      .then((sessionDescription) => {\n        return {\n          body: sessionDescription.sdp,\n          contentType: 'application/sdp',\n        };\n      })\n      .catch((error) => {\n        this.logger.error('SessionDescriptionHandler.getDescription failed - ' + error);\n        throw error;\n      });\n  }\n\n  /**\n   * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n   * @param contentType - The content type that is in the SIP Message.\n   */\n  public hasDescription(contentType: string): boolean {\n    this.logger.debug('SessionDescriptionHandler.hasDescription');\n    return contentType === 'application/sdp';\n  }\n\n  /**\n   * Send DTMF via RTP (RFC 4733).\n   * Returns true if DTMF send is successful, false otherwise.\n   * @param tones - A string containing DTMF digits.\n   * @param options - Options object to be used by sendDtmf.\n   */\n  public sendDtmf(tones: string, options?: { duration: number; interToneGap: number }): boolean {\n    this.logger.debug('SessionDescriptionHandler.sendDtmf');\n    if (this._peerConnection === undefined) {\n      this.logger.error('SessionDescriptionHandler.sendDtmf failed - peer connection closed');\n      return false;\n    }\n    const senders = this._peerConnection.getSenders();\n    if (senders.length === 0) {\n      this.logger.error('SessionDescriptionHandler.sendDtmf failed - no senders');\n      return false;\n    }\n    const dtmfSender = senders[0].dtmf;\n    if (!dtmfSender) {\n      this.logger.error('SessionDescriptionHandler.sendDtmf failed - no DTMF sender');\n      return false;\n    }\n    const duration = options?.duration;\n    const interToneGap = options?.interToneGap;\n    try {\n      dtmfSender.insertDTMF(tones, duration, interToneGap);\n    } catch (e) {\n      this.logger.error(e as any);\n      return false;\n    }\n    this.logger.log('SessionDescriptionHandler.sendDtmf sent via RTP: ' + tones.toString());\n    return true;\n  }\n\n  /**\n   * Sets an offer or answer.\n   * @param sdp - The session description.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */\n  public setDescription(\n    sdp: string,\n    options?: SessionDescriptionHandlerOptions,\n    modifiers?: Array<SessionDescriptionHandlerModifier>,\n  ): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n\n    // Callback on data channel creation\n    this.onDataChannel = options?.onDataChannel;\n\n    // SDP type\n    const type = this._peerConnection.signalingState === 'have-local-offer' ? 'answer' : 'offer';\n\n    return this.getLocalMediaStream(options)\n      .then(() => this.applyModifiers({ sdp, type }, modifiers))\n      .then((sessionDescription) => this.setRemoteSessionDescription(sessionDescription))\n      .catch((error) => {\n        this.logger.error('SessionDescriptionHandler.setDescription failed - ' + error);\n        throw error;\n      });\n  }\n\n  /**\n   * Applies modifiers to SDP prior to setting the local or remote description.\n   * @param sdp - SDP to modify.\n   * @param modifiers - Modifiers to apply.\n   */\n  protected applyModifiers(\n    sdp: RTCSessionDescriptionInit,\n    modifiers?: Array<SessionDescriptionHandlerModifier>,\n  ): Promise<RTCSessionDescriptionInit> {\n    this.logger.debug('SessionDescriptionHandler.applyModifiers');\n    if (!modifiers || modifiers.length === 0) {\n      return Promise.resolve(sdp);\n    }\n    return modifiers\n      .reduce((cur, next) => cur.then(next), Promise.resolve(sdp))\n      .then((modified) => {\n        this.logger.debug('SessionDescriptionHandler.applyModifiers - modified sdp');\n        if (!modified.sdp || !modified.type) {\n          throw new Error('Invalid SDP.');\n        }\n        return { sdp: modified.sdp, type: modified.type };\n      });\n  }\n\n  /**\n   * Create a data channel.\n   * @remarks\n   * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n   * Only creates a data channel if creating a local offer.\n   * Only if one does not already exist.\n   * @param options - Session description handler options.\n   */\n  protected createDataChannel(options?: SessionDescriptionHandlerOptions): Promise<void> {\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    // only create a data channel if requested\n    if (options?.dataChannel !== true) {\n      return Promise.resolve();\n    }\n    // do not create a data channel if we already have one\n    if (this._dataChannel) {\n      return Promise.resolve();\n    }\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable, assume we are creating a local offer so create a data channel\n        this.logger.debug('SessionDescriptionHandler.createDataChannel - creating data channel');\n        try {\n          this._dataChannel = this._peerConnection.createDataChannel(\n            options?.dataChannelLabel || '',\n            options?.dataChannelOptions,\n          );\n          if (this.onDataChannel) {\n            this.onDataChannel(this._dataChannel);\n          }\n          return Promise.resolve();\n        } catch (error) {\n          return Promise.reject(error);\n        }\n      case 'have-remote-offer':\n        return Promise.resolve();\n      case 'have-local-offer':\n      case 'have-local-pranswer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n  }\n\n  /**\n   * Depending on current signaling state, create a local offer or answer.\n   * @param options - Session description handler options.\n   */\n  protected createLocalOfferOrAnswer(options?: SessionDescriptionHandlerOptions): Promise<RTCSessionDescriptionInit> {\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable, assume we are creating a local offer\n        this.logger.debug('SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer');\n        return this._peerConnection.createOffer(options?.offerOptions);\n      case 'have-remote-offer':\n        // if we have a remote offer, assume we are creating a local answer\n        this.logger.debug('SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer');\n        return this._peerConnection.createAnswer(options?.answerOptions);\n      case 'have-local-offer':\n      case 'have-local-pranswer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n  }\n\n  /**\n   * Get a media stream from the media stream factory and set the local media stream.\n   * @param options - Session description handler options.\n   */\n  protected getLocalMediaStream(options?: SessionDescriptionHandlerOptions): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.getLocalMediaStream');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    let constraints: MediaStreamConstraints = { ...options?.constraints };\n\n    // if we already have a local media stream...\n    if (this.localMediaStreamConstraints) {\n      // ignore constraint \"downgrades\"\n      constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n      constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n\n      // if constraints have not changed, do not get a new media stream\n      if (\n        JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) &&\n        JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)\n      ) {\n        return Promise.resolve();\n      }\n    } else {\n      // if no constraints have been specified, default to audio for initial media stream\n      if (constraints.audio === undefined && constraints.video === undefined) {\n        constraints = { audio: true };\n      }\n    }\n\n    this.localMediaStreamConstraints = constraints;\n    return this.mediaStreamFactory(constraints, this as any).then((mediaStream) =>\n      this.setLocalMediaStream(mediaStream),\n    );\n  }\n\n  /**\n   * Sets the encoding priorty to high for sender track.\n   *\n   */\n  protected async enableSenderDscp() {\n    if (!this.sessionDescriptionHandlerConfiguration?.enableDscp) {\n      return;\n    }\n    if (!this._peerConnection) {\n      throw new Error('Peer connection undefined.');\n    }\n    for (const sender of this._peerConnection.getSenders().filter((sender) => sender.track)) {\n      const parameters = sender.getParameters();\n      // console.info('getsender params =', parameters);\n      (parameters as any).priority = 'high';\n      try {\n        await sender.setParameters(parameters);\n      } catch (error) {\n        console.error(\n          `Error while setting encodings parameters for ${sender.track!.kind} Track ${sender.track!.id}: ${\n            error.message || error.name\n          }`,\n        );\n      }\n    }\n  }\n\n  /**\n   * Sets the peer connection's sender tracks and local media stream tracks.\n   *\n   * @remarks\n   * Only the first audio and video tracks of the provided MediaStream are utilized.\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param stream - Media stream containing tracks to be utilized.\n   */\n  protected setLocalMediaStream(stream: MediaStream): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setLocalMediaStream');\n\n    if (!this._peerConnection) {\n      throw new Error('Peer connection undefined.');\n    }\n    const pc = this._peerConnection;\n\n    const localStream = this._localMediaStream;\n\n    const trackUpdates: Array<Promise<void>> = [];\n\n    const updateTrack = (newTrack: MediaStreamTrack): void => {\n      const kind = newTrack.kind;\n      if (kind !== 'audio' && kind !== 'video') {\n        throw new Error(`Unknown new track kind ${kind}.`);\n      }\n      const sender = pc.getSenders().find((sender) => sender.track && sender.track.kind === kind);\n      if (sender) {\n        trackUpdates.push(\n          new Promise<void>((resolve) => {\n            this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n            resolve();\n          }).then(() =>\n            sender\n              .replaceTrack(newTrack)\n              .then(() => {\n                const oldTrack = localStream.getTracks().find((localTrack) => localTrack.kind === kind);\n                if (oldTrack) {\n                  oldTrack.stop();\n                  localStream.removeTrack(oldTrack);\n                  SessionDescriptionHandler.dispatchRemoveTrackEvent(localStream, oldTrack);\n                }\n                localStream.addTrack(newTrack);\n                SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n              })\n              .catch((error: Error) => {\n                this.logger.error(\n                  `SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`,\n                );\n                throw error;\n              }),\n          ),\n        );\n      } else {\n        trackUpdates.push(\n          new Promise<void>((resolve) => {\n            this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n            resolve();\n          }).then(() => {\n            // Review: could make streamless tracks a configurable option?\n            // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n            try {\n              pc.addTrack(newTrack, localStream);\n            } catch (error) {\n              this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n              throw error;\n            }\n            localStream.addTrack(newTrack);\n            SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n          }),\n        );\n      }\n    };\n\n    // update peer connection audio tracks\n    const audioTracks = stream.getAudioTracks();\n    if (audioTracks.length) {\n      updateTrack(audioTracks[0]);\n    }\n\n    // update peer connection video tracks\n    const videoTracks = stream.getVideoTracks();\n    if (videoTracks.length) {\n      updateTrack(videoTracks[0]);\n    }\n\n    return trackUpdates.reduce((p, x) => p.then(() => x), Promise.resolve());\n  }\n\n  /**\n   * Gets the peer connection's local session description.\n   */\n  protected getLocalSessionDescription(): Promise<RTCSessionDescription> {\n    this.logger.debug('SessionDescriptionHandler.getLocalSessionDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    const sdp = this._peerConnection.localDescription;\n    if (!sdp) {\n      return Promise.reject(new Error('Failed to get local session description'));\n    }\n    return Promise.resolve(sdp);\n  }\n\n  /**\n   * Sets the peer connection's local session description.\n   * @param sessionDescription - sessionDescription The session description.\n   */\n  protected setLocalSessionDescription(sessionDescription: RTCSessionDescriptionInit): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setLocalSessionDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    return this._peerConnection.setLocalDescription(sessionDescription);\n  }\n\n  /**\n   * Sets the peer connection's remote session description.\n   * @param sessionDescription - The session description.\n   */\n  protected setRemoteSessionDescription(sessionDescription: RTCSessionDescriptionInit): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setRemoteSessionDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    const sdp = sessionDescription.sdp;\n    let type: RTCSdpType;\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable assume this is a remote offer\n        type = 'offer';\n        break;\n      case 'have-local-offer':\n        // if we made an offer, assume this is a remote answer\n        type = 'answer';\n        break;\n      case 'have-local-pranswer':\n      case 'have-remote-offer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n    if (!sdp) {\n      this.logger.error('SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp');\n      return Promise.reject(new Error('SDP is undefined'));\n    }\n    return this._peerConnection.setRemoteDescription({ sdp, type });\n  }\n\n  /**\n   * Sets a remote media stream track.\n   *\n   * @remarks\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param track - Media stream track to be utilized.\n   */\n  protected setRemoteTrack(track: MediaStreamTrack): void {\n    this.logger.debug('SessionDescriptionHandler.setRemoteTrack');\n\n    const remoteStream = this._remoteMediaStream;\n\n    if (remoteStream.getTrackById(track.id)) {\n      this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n    } else if (track.kind === 'audio') {\n      this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n      remoteStream.getAudioTracks().forEach((track) => {\n        track.stop();\n        remoteStream.removeTrack(track);\n        SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n      });\n      remoteStream.addTrack(track);\n      SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n    } else if (track.kind === 'video') {\n      this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n      remoteStream.getVideoTracks().forEach((track) => {\n        track.stop();\n        remoteStream.removeTrack(track);\n        SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n      });\n      remoteStream.addTrack(track);\n      SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n    }\n  }\n\n  /**\n   * Depending on the current signaling state and the session hold state, update transceiver direction.\n   * @param options - Session description handler options.\n   */\n  protected updateDirection(options?: SessionDescriptionHandlerOptions): Promise<void> {\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n\n    // 4.2.3.  setDirection\n    //\n    //    The setDirection method sets the direction of a transceiver, which\n    //    affects the direction property of the associated \"m=\" section on\n    //    future calls to createOffer and createAnswer.  The permitted values\n    //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n    //    mirroring the identically named direction attributes defined in\n    //    [RFC4566], Section 6.\n    //\n    //    When creating offers, the transceiver direction is directly reflected\n    //    in the output, even for re-offers.  When creating answers, the\n    //    transceiver direction is intersected with the offered direction, as\n    //    explained in Section 5.3 below.\n    //\n    //    Note that while setDirection sets the direction property of the\n    //    transceiver immediately (Section 4.2.4), this property does not\n    //    immediately affect whether the transceiver's RtpSender will send or\n    //    its RtpReceiver will receive.  The direction in effect is represented\n    //    by the currentDirection property, which is only updated when an\n    //    answer is applied.\n    //\n    // 4.2.4.  direction\n    //\n    //    The direction property indicates the last value passed into\n    //    setDirection.  If setDirection has never been called, it is set to\n    //    the direction the transceiver was initialized with.\n    //\n    // 4.2.5.  currentDirection\n    //\n    //    The currentDirection property indicates the last negotiated direction\n    //    for the transceiver's associated \"m=\" section.  More specifically, it\n    //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n    //    section in the last applied answer (including provisional answers),\n    //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n    //    For example, if the direction attribute for the associated \"m=\"\n    //    section in a remote answer is \"recvonly\", currentDirection is set to\n    //    \"sendonly\".\n    //\n    //    If an answer that references this transceiver has not yet been\n    //    applied or if the transceiver is stopped, currentDirection is set to\n    //    \"null\".\n    //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n    //\n    // *  A direction attribute, determined by applying the rules regarding\n    //    the offered direction specified in [RFC3264], Section 6.1, and\n    //    then intersecting with the direction of the associated\n    //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n    //    offered as \"sendonly\" and the local transceiver is set to\n    //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n    // https://tools.ietf.org/html/rfc8829#section-5.3.1\n    //\n    // If a stream is offered as sendonly, the corresponding stream MUST be\n    // marked as recvonly or inactive in the answer.  If a media stream is\n    // listed as recvonly in the offer, the answer MUST be marked as\n    // sendonly or inactive in the answer.  If an offered media stream is\n    // listed as sendrecv (or if there is no direction attribute at the\n    // media or session level, in which case the stream is sendrecv by\n    // default), the corresponding stream in the answer MAY be marked as\n    // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n    // stream is listed as inactive, it MUST be marked as inactive in the\n    // answer.\n    // https://tools.ietf.org/html/rfc3264#section-6.1\n\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable, assume we are creating a local offer\n        this.logger.debug('SessionDescriptionHandler.updateDirection - setting offer direction');\n        {\n          // determine the direction to offer given the current direction and hold state\n          const directionToOffer = (currentDirection: RTCRtpTransceiverDirection): RTCRtpTransceiverDirection => {\n            switch (currentDirection) {\n              case 'inactive':\n                return options?.hold ? 'inactive' : 'recvonly';\n              case 'recvonly':\n                return options?.hold ? 'inactive' : 'recvonly';\n              case 'sendonly':\n                return options?.hold ? 'sendonly' : 'sendrecv';\n              case 'sendrecv':\n                return options?.hold ? 'sendonly' : 'sendrecv';\n              case 'stopped':\n                return 'stopped';\n              default:\n                throw new Error('Should never happen');\n            }\n          };\n          // set the transceiver direction to the offer direction\n          this._peerConnection.getTransceivers().forEach((transceiver) => {\n            if (transceiver.direction /* guarding, but should always be true */) {\n              const offerDirection = directionToOffer(transceiver.direction);\n              if (transceiver.direction !== offerDirection) {\n                transceiver.direction = offerDirection;\n              }\n            }\n          });\n        }\n        break;\n      case 'have-remote-offer':\n        // if we have a remote offer, assume we are creating a local answer\n        this.logger.debug('SessionDescriptionHandler.updateDirection - setting answer direction');\n\n        // FIXME: This is not the correct way to determine the answer direction as it is only\n        // considering first match in the offered SDP and using that to determine the answer direction.\n        // While that may be fine for our current use cases, it is not a generally correct approach.\n        {\n          // determine the offered direction\n          const offeredDirection = ((): 'inactive' | 'recvonly' | 'sendonly' | 'sendrecv' => {\n            const description = this._peerConnection.remoteDescription;\n            if (!description) {\n              throw new Error('Failed to read remote offer');\n            }\n            const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n            if (searchResult) {\n              switch (searchResult[0]) {\n                case 'a=inactive\\r\\n':\n                  return 'inactive';\n                case 'a=recvonly\\r\\n':\n                  return 'recvonly';\n                case 'a=sendonly\\r\\n':\n                  return 'sendonly';\n                case 'a=sendrecv\\r\\n':\n                  return 'sendrecv';\n                default:\n                  throw new Error('Should never happen');\n              }\n            }\n            return 'sendrecv';\n          })();\n\n          // determine the answer direction based on the offered direction and our hold state\n          const answerDirection = ((): 'inactive' | 'recvonly' | 'sendonly' | 'sendrecv' => {\n            switch (offeredDirection) {\n              case 'inactive':\n                return 'inactive';\n              case 'recvonly':\n                return 'sendonly';\n              case 'sendonly':\n                return options?.hold ? 'inactive' : 'recvonly';\n              case 'sendrecv':\n                return options?.hold ? 'sendonly' : 'sendrecv';\n              default:\n                throw new Error('Should never happen');\n            }\n          })();\n\n          // set the transceiver direction to the answer direction\n          this._peerConnection.getTransceivers().forEach((transceiver) => {\n            if (transceiver.direction /* guarding, but should always be true */) {\n              if (transceiver.direction !== 'stopped' && transceiver.direction !== answerDirection) {\n                transceiver.direction = answerDirection;\n              }\n            }\n          });\n        }\n        break;\n      case 'have-local-offer':\n      case 'have-local-pranswer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n    return Promise.resolve();\n  }\n\n  /**\n   * Called when ICE gathering completes and resolves any waiting promise.\n   */\n  protected iceGatheringComplete(): void {\n    this.logger.debug('SessionDescriptionHandler.iceGatheringComplete');\n    // clear timer if need be\n    if (this.iceGatheringCompleteTimeoutId !== undefined) {\n      this.logger.debug('SessionDescriptionHandler.iceGatheringComplete - clearing timeout');\n      clearTimeout(this.iceGatheringCompleteTimeoutId);\n      this.iceGatheringCompleteTimeoutId = undefined;\n    }\n    // resolve and cleanup promise if need be\n    if (this.iceGatheringCompletePromise !== undefined) {\n      this.logger.debug('SessionDescriptionHandler.iceGatheringComplete - resolving promise');\n      this.iceGatheringCompleteResolve?.();\n      this.iceGatheringCompletePromise = undefined;\n      this.iceGatheringCompleteResolve = undefined;\n      this.iceGatheringCompleteReject = undefined;\n    }\n  }\n\n  /**\n   * Wait for ICE gathering to complete.\n   * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n   * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n   */\n  protected waitForIceGatheringComplete(restart = false, timeout = 0): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    // guard already complete\n    if (!restart && this._peerConnection.iceGatheringState === 'complete') {\n      this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - already complete');\n      return Promise.resolve();\n    }\n    // only one may be waiting, reject any prior\n    if (this.iceGatheringCompletePromise !== undefined) {\n      this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise');\n      this.iceGatheringCompleteReject?.(new Error('Promise superseded.'));\n      this.iceGatheringCompletePromise = undefined;\n      this.iceGatheringCompleteResolve = undefined;\n      this.iceGatheringCompleteReject = undefined;\n    }\n    this.iceGatheringCompletePromise = new Promise<void>((resolve, reject) => {\n      this.iceGatheringCompleteResolve = resolve;\n      this.iceGatheringCompleteReject = reject;\n      if (timeout > 0) {\n        this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in ' + timeout);\n        this.iceGatheringCompleteTimeoutId = setTimeout(() => {\n          this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - timeout');\n          this.iceGatheringComplete();\n        }, timeout);\n      }\n    });\n    return this.iceGatheringCompletePromise;\n  }\n\n  /**\n   * Initializes the peer connection event handlers\n   */\n  private initPeerConnectionEventHandlers(): void {\n    this.logger.debug('SessionDescriptionHandler.initPeerConnectionEventHandlers');\n\n    if (!this._peerConnection) {\n      throw new Error('Peer connection undefined.');\n    }\n    const peerConnection = this._peerConnection;\n\n    peerConnection.onconnectionstatechange = (event): void => {\n      const newState = peerConnection.connectionState;\n      this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n      if (this._peerConnectionDelegate?.onconnectionstatechange) {\n        this._peerConnectionDelegate.onconnectionstatechange(event);\n      }\n    };\n\n    peerConnection.ondatachannel = (event): void => {\n      this.logger.debug('SessionDescriptionHandler.ondatachannel');\n      this._dataChannel = event.channel;\n      if (this.onDataChannel) {\n        this.onDataChannel(this._dataChannel);\n      }\n      if (this._peerConnectionDelegate?.ondatachannel) {\n        this._peerConnectionDelegate.ondatachannel(event);\n      }\n    };\n\n    peerConnection.onicecandidate = (event): void => {\n      this.logger.debug('SessionDescriptionHandler.onicecandidate');\n      if (this._peerConnectionDelegate?.onicecandidate) {\n        this._peerConnectionDelegate.onicecandidate(event);\n      }\n    };\n\n    peerConnection.onicecandidateerror = ((event: RTCPeerConnectionIceErrorEvent): void => {\n      this.logger.debug('SessionDescriptionHandler.onicecandidateerror');\n      if (this._peerConnectionDelegate?.onicecandidateerror) {\n        this._peerConnectionDelegate.onicecandidateerror(event);\n      }\n    }) as (this: RTCPeerConnection, ev: Event) => any;\n\n    peerConnection.oniceconnectionstatechange = (event): void => {\n      const newState = peerConnection.iceConnectionState;\n      this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n      if (this._peerConnectionDelegate?.oniceconnectionstatechange) {\n        this._peerConnectionDelegate.oniceconnectionstatechange(event);\n      }\n    };\n\n    peerConnection.onicegatheringstatechange = (event): void => {\n      const newState = peerConnection.iceGatheringState;\n      this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n      if (newState === 'complete') {\n        this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n      }\n      if (this._peerConnectionDelegate?.onicegatheringstatechange) {\n        this._peerConnectionDelegate.onicegatheringstatechange(event);\n      }\n    };\n\n    peerConnection.onnegotiationneeded = (event): void => {\n      this.logger.debug('SessionDescriptionHandler.onnegotiationneeded');\n      if (this._peerConnectionDelegate?.onnegotiationneeded) {\n        this._peerConnectionDelegate.onnegotiationneeded(event);\n      }\n    };\n\n    peerConnection.onsignalingstatechange = (event): void => {\n      const newState = peerConnection.signalingState;\n      this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n      if (this._peerConnectionDelegate?.onsignalingstatechange) {\n        this._peerConnectionDelegate.onsignalingstatechange(event);\n      }\n    };\n\n    // onstatsended is no longer a part of PeerConnection as per the specs so removing it\n\n    // peerConnection.onstatsended = (event): void => {\n    //     this.logger.debug(`SessionDescriptionHandler.onstatsended`);\n    //     if (this._peerConnectionDelegate?.onstatsended) {\n    //         this._peerConnectionDelegate.onstatsended(event);\n    //     }\n    // };\n\n    peerConnection.ontrack = (event): void => {\n      const kind = event.track.kind;\n      const enabled = event.track.enabled ? 'enabled' : 'disabled';\n      this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n      this.setRemoteTrack(event.track);\n      if (this._peerConnectionDelegate?.ontrack) {\n        this._peerConnectionDelegate.ontrack(event);\n      }\n    };\n  }\n}\n\nexport function defaultPeerConnectionConfiguration(): RTCConfiguration {\n  const config: RTCConfiguration = {\n    bundlePolicy: 'balanced', // Note: max-bundle is not supported by the demo backend currently (5/15/17)\n    certificates: undefined,\n    iceCandidatePoolSize: 0,\n    iceServers: [{ urls: 'stun:stun.l.google.com:19302' }], // TURN URL example: \"turn:88.88.88.0:3478\", \"test\", \"test\"\n    iceTransportPolicy: 'all',\n    rtcpMuxPolicy: 'require',\n  };\n  return config;\n}\n\nexport function defaultMediaStreamFactory(): MediaStreamFactory {\n  return (constraints: MediaStreamConstraints): Promise<MediaStream> => {\n    // if no audio or video, return a media stream without tracks\n    if (!constraints.audio && !constraints.video) {\n      return Promise.resolve(new MediaStream());\n    }\n    // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n    // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n    // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n    if (navigator.mediaDevices === undefined) {\n      return Promise.reject(new Error('Media devices not available in insecure contexts.'));\n    }\n    return navigator.mediaDevices.getUserMedia(constraints);\n  };\n}\n\nexport const defaultSessionDescriptionFactory = (\n  session: Session,\n  options?: WebPhoneSessionDescriptionHandlerFactoryOptions,\n) => {\n  const mediaStreamFactory = defaultMediaStreamFactory();\n\n  // make sure we allow `0` to be passed in so timeout can be disabled\n  const iceGatheringTimeout = options?.iceGatheringTimeout !== undefined ? options?.iceGatheringTimeout : 5000;\n\n  // merge passed factory options into default session description configuration\n  const sessionDescriptionHandlerConfiguration: WebPhoneSessionDescriptionHandlerConfiguration = {\n    iceGatheringTimeout,\n    enableDscp: options!.enableDscp,\n    peerConnectionConfiguration: {\n      ...defaultPeerConnectionConfiguration(),\n      ...options?.peerConnectionConfiguration,\n    },\n  };\n\n  const logger = session.userAgent.getLogger('sip.SessionDescriptionHandler');\n\n  return new SessionDescriptionHandler(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n};\n","{\n  \"name\": \"ringcentral-web-phone\",\n  \"version\": \"1.0.3\",\n  \"homepage\": \"https://github.com/ringcentral/ringcentral-web-phone\",\n  \"bugs\": {\n    \"url\": \"https://github.com/ringcentral/ringcentral-web-phone/issues\"\n  },\n  \"repository\": {\n    \"type\": \"git\",\n    \"url\": \"git://github.com/ringcentral/ringcentral-web-phone.git\"\n  },\n  \"license\": \"MIT\",\n  \"author\": {\n    \"name\": \"RingCentral, Inc.\",\n    \"email\": \"devsupport@ringcentral.com\"\n  },\n  \"contributors\": [\n    {\n      \"name\": \"Kirill Konshin\"\n    },\n    {\n      \"name\": \"Elias Sun\"\n    },\n    {\n      \"name\": \"Vyshakh Babji\"\n    },\n    {\n      \"name\": \"Yatin Gera\"\n    },\n    {\n      \"name\": \"Tyler Liu\"\n    },\n    {\n      \"name\": \"Embbnux Ji\"\n    }\n  ],\n  \"main\": \"./lib/src/index.js\",\n  \"types\": \"./lib/src/index.d.ts\",\n  \"scripts\": {\n    \"build\": \"rm -rf lib && yarn tsc && rm -rf docs && parcel build demo/index.html demo/callback.html --dist-dir docs --public-url ./\",\n    \"lint\": \"eslint --fix '**/*.{ts,tsx,js,jsx}' && prettier --write . && sort-package-json\",\n    \"serve\": \"rm -rf .parcel-cache && parcel demo/index.html demo/callback.html --dist-dir docs\",\n    \"test\": \"jest src/mediaStreams.spec.ts\",\n    \"test2\": \"NODE_OPTIONS=--require=dotenv-override-true/config playwright test test/index.spec.ts --workers=1\",\n    \"test:coverage\": \"cat .coverage/lcov.info | coveralls -v\"\n  },\n  \"dependencies\": {\n    \"sip.js\": 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diff --git a/docs/index.9050f078.js.map b/docs/index.9050f078.js.map
deleted file mode 100644
index 394a2d2..0000000
--- a/docs/index.9050f078.js.map
+++ /dev/null
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eslint-disable max-params */ /* eslint-disable max-nested-callbacks */ var $4eae0a726ab50395$exports = {};\n/*!\n * jQuery JavaScript Library v3.7.1\n * https://jquery.com/\n *\n * Copyright OpenJS Foundation and other contributors\n * Released under the MIT license\n * https://jquery.org/license\n *\n * Date: 2023-08-28T13:37Z\n */ (function(global, factory) {\n    \"use strict\";\n    if (typeof $4eae0a726ab50395$exports === \"object\") // For CommonJS and CommonJS-like environments where a proper `window`\n    // is present, execute the factory and get jQuery.\n    // For environments that do not have a `window` with a `document`\n    // (such as Node.js), expose a factory as module.exports.\n    // This accentuates the need for the creation of a real `window`.\n    // e.g. var jQuery = require(\"jquery\")(window);\n    // See ticket trac-14549 for more info.\n    $4eae0a726ab50395$exports = global.document ? factory(global, true) : function(w) {\n        if (!w.document) throw new Error(\"jQuery requires a window with a document\");\n        return factory(w);\n    };\n    else factory(global);\n// Pass this if window is not defined yet\n})(typeof window !== \"undefined\" ? window : $4eae0a726ab50395$exports, function(window1, noGlobal) {\n    // Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1\n    // throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode\n    // arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common\n    // enough that all such attempts are guarded in a try block.\n    \"use strict\";\n    var arr = [];\n    var getProto = Object.getPrototypeOf;\n    var slice = arr.slice;\n    var flat = arr.flat ? function(array) {\n        return arr.flat.call(array);\n    } : function(array) {\n        return arr.concat.apply([], array);\n    };\n    var push = arr.push;\n    var indexOf = arr.indexOf;\n    var class2type = {};\n    var toString = class2type.toString;\n    var hasOwn = class2type.hasOwnProperty;\n    var fnToString = hasOwn.toString;\n    var ObjectFunctionString = fnToString.call(Object);\n    var support = {};\n    var isFunction = function isFunction(obj) {\n        // Support: Chrome <=57, Firefox <=52\n        // In some browsers, typeof returns \"function\" for HTML <object> elements\n        // (i.e., `typeof document.createElement( \"object\" ) === \"function\"`).\n        // We don't want to classify *any* DOM node as a function.\n        // Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5\n        // Plus for old WebKit, typeof returns \"function\" for HTML collections\n        // (e.g., `typeof document.getElementsByTagName(\"div\") === \"function\"`). (gh-4756)\n        return typeof obj === \"function\" && typeof obj.nodeType !== \"number\" && typeof obj.item !== \"function\";\n    };\n    var isWindow = function isWindow(obj) {\n        return obj != null && obj === obj.window;\n    };\n    var document = window1.document;\n    var preservedScriptAttributes = {\n        type: true,\n        src: true,\n        nonce: true,\n        noModule: true\n    };\n    function DOMEval(code, node, doc) {\n        doc = doc || document;\n        var i, val, script = doc.createElement(\"script\");\n        script.text = code;\n        if (node) for(i in preservedScriptAttributes){\n            // Support: Firefox 64+, Edge 18+\n            // Some browsers don't support the \"nonce\" property on scripts.\n            // On the other hand, just using `getAttribute` is not enough as\n            // the `nonce` attribute is reset to an empty string whenever it\n            // becomes browsing-context connected.\n            // See https://github.com/whatwg/html/issues/2369\n            // See https://html.spec.whatwg.org/#nonce-attributes\n            // The `node.getAttribute` check was added for the sake of\n            // `jQuery.globalEval` so that it can fake a nonce-containing node\n            // via an object.\n            val = node[i] || node.getAttribute && node.getAttribute(i);\n            if (val) script.setAttribute(i, val);\n        }\n        doc.head.appendChild(script).parentNode.removeChild(script);\n    }\n    function toType(obj) {\n        if (obj == null) return obj + \"\";\n        // Support: Android <=2.3 only (functionish RegExp)\n        return typeof obj === \"object\" || typeof obj === \"function\" ? class2type[toString.call(obj)] || \"object\" : typeof obj;\n    }\n    /* global Symbol */ // Defining this global in .eslintrc.json would create a danger of using the global\n    // unguarded in another place, it seems safer to define global only for this module\n    var version = \"3.7.1\", rhtmlSuffix = /HTML$/i, // Define a local copy of jQuery\n    jQuery = function(selector, context) {\n        // The jQuery object is actually just the init constructor 'enhanced'\n        // Need init if jQuery is called (just allow error to be thrown if not included)\n        return new jQuery.fn.init(selector, context);\n    };\n    jQuery.fn = jQuery.prototype = {\n        // The current version of jQuery being used\n        jquery: version,\n        constructor: jQuery,\n        // The default length of a jQuery object is 0\n        length: 0,\n        toArray: function() {\n            return slice.call(this);\n        },\n        // Get the Nth element in the matched element set OR\n        // Get the whole matched element set as a clean array\n        get: function(num) {\n            // Return all the elements in a clean array\n            if (num == null) return slice.call(this);\n            // Return just the one element from the set\n            return num < 0 ? this[num + this.length] : this[num];\n        },\n        // Take an array of elements and push it onto the stack\n        // (returning the new matched element set)\n        pushStack: function(elems) {\n            // Build a new jQuery matched element set\n            var ret = jQuery.merge(this.constructor(), elems);\n            // Add the old object onto the stack (as a reference)\n            ret.prevObject = this;\n            // Return the newly-formed element set\n            return ret;\n        },\n        // Execute a callback for every element in the matched set.\n        each: function(callback) {\n            return jQuery.each(this, callback);\n        },\n        map: function(callback) {\n            return this.pushStack(jQuery.map(this, function(elem, i) {\n                return callback.call(elem, i, elem);\n            }));\n        },\n        slice: function() {\n            return this.pushStack(slice.apply(this, arguments));\n        },\n        first: function() {\n            return this.eq(0);\n        },\n        last: function() {\n            return this.eq(-1);\n        },\n        even: function() {\n            return this.pushStack(jQuery.grep(this, function(_elem, i) {\n                return (i + 1) % 2;\n            }));\n        },\n        odd: function() {\n            return this.pushStack(jQuery.grep(this, function(_elem, i) {\n                return i % 2;\n            }));\n        },\n        eq: function(i) {\n            var len = this.length, j = +i + (i < 0 ? len : 0);\n            return this.pushStack(j >= 0 && j < len ? [\n                this[j]\n            ] : []);\n        },\n        end: function() {\n            return this.prevObject || this.constructor();\n        },\n        // For internal use only.\n        // Behaves like an Array's method, not like a jQuery method.\n        push: push,\n        sort: arr.sort,\n        splice: arr.splice\n    };\n    jQuery.extend = jQuery.fn.extend = function() {\n        var options, name, src, copy, copyIsArray, clone, target = arguments[0] || {}, i = 1, length = arguments.length, deep = false;\n        // Handle a deep copy situation\n        if (typeof target === \"boolean\") {\n            deep = target;\n            // Skip the boolean and the target\n            target = arguments[i] || {};\n            i++;\n        }\n        // Handle case when target is a string or something (possible in deep copy)\n        if (typeof target !== \"object\" && !isFunction(target)) target = {};\n        // Extend jQuery itself if only one argument is passed\n        if (i === length) {\n            target = this;\n            i--;\n        }\n        for(; i < length; i++){\n            // Only deal with non-null/undefined values\n            if ((options = arguments[i]) != null) // Extend the base object\n            for(name in options){\n                copy = options[name];\n                // Prevent Object.prototype pollution\n                // Prevent never-ending loop\n                if (name === \"__proto__\" || target === copy) continue;\n                // Recurse if we're merging plain objects or arrays\n                if (deep && copy && (jQuery.isPlainObject(copy) || (copyIsArray = Array.isArray(copy)))) {\n                    src = target[name];\n                    // Ensure proper type for the source value\n                    if (copyIsArray && !Array.isArray(src)) clone = [];\n                    else if (!copyIsArray && !jQuery.isPlainObject(src)) clone = {};\n                    else clone = src;\n                    copyIsArray = false;\n                    // Never move original objects, clone them\n                    target[name] = jQuery.extend(deep, clone, copy);\n                // Don't bring in undefined values\n                } else if (copy !== undefined) target[name] = copy;\n            }\n        }\n        // Return the modified object\n        return target;\n    };\n    jQuery.extend({\n        // Unique for each copy of jQuery on the page\n        expando: \"jQuery\" + (version + Math.random()).replace(/\\D/g, \"\"),\n        // Assume jQuery is ready without the ready module\n        isReady: true,\n        error: function(msg) {\n            throw new Error(msg);\n        },\n        noop: function() {},\n        isPlainObject: function(obj) {\n            var proto, Ctor;\n            // Detect obvious negatives\n            // Use toString instead of jQuery.type to catch host objects\n            if (!obj || toString.call(obj) !== \"[object Object]\") return false;\n            proto = getProto(obj);\n            // Objects with no prototype (e.g., `Object.create( null )`) are plain\n            if (!proto) return true;\n            // Objects with prototype are plain iff they were constructed by a global Object function\n            Ctor = hasOwn.call(proto, \"constructor\") && proto.constructor;\n            return typeof Ctor === \"function\" && fnToString.call(Ctor) === ObjectFunctionString;\n        },\n        isEmptyObject: function(obj) {\n            var name;\n            for(name in obj)return false;\n            return true;\n        },\n        // Evaluates a script in a provided context; falls back to the global one\n        // if not specified.\n        globalEval: function(code, options, doc) {\n            DOMEval(code, {\n                nonce: options && options.nonce\n            }, doc);\n        },\n        each: function(obj, callback) {\n            var length, i = 0;\n            if (isArrayLike(obj)) {\n                length = obj.length;\n                for(; i < length; i++){\n                    if (callback.call(obj[i], i, obj[i]) === false) break;\n                }\n            } else for(i in obj){\n                if (callback.call(obj[i], i, obj[i]) === false) break;\n            }\n            return obj;\n        },\n        // Retrieve the text value of an array of DOM nodes\n        text: function(elem) {\n            var node, ret = \"\", i = 0, nodeType = elem.nodeType;\n            if (!nodeType) // If no nodeType, this is expected to be an array\n            while(node = elem[i++])// Do not traverse comment nodes\n            ret += jQuery.text(node);\n            if (nodeType === 1 || nodeType === 11) return elem.textContent;\n            if (nodeType === 9) return elem.documentElement.textContent;\n            if (nodeType === 3 || nodeType === 4) return elem.nodeValue;\n            // Do not include comment or processing instruction nodes\n            return ret;\n        },\n        // results is for internal usage only\n        makeArray: function(arr, results) {\n            var ret = results || [];\n            if (arr != null) {\n                if (isArrayLike(Object(arr))) jQuery.merge(ret, typeof arr === \"string\" ? [\n                    arr\n                ] : arr);\n                else push.call(ret, arr);\n            }\n            return ret;\n        },\n        inArray: function(elem, arr, i) {\n            return arr == null ? -1 : indexOf.call(arr, elem, i);\n        },\n        isXMLDoc: function(elem) {\n            var namespace = elem && elem.namespaceURI, docElem = elem && (elem.ownerDocument || elem).documentElement;\n            // Assume HTML when documentElement doesn't yet exist, such as inside\n            // document fragments.\n            return !rhtmlSuffix.test(namespace || docElem && docElem.nodeName || \"HTML\");\n        },\n        // Support: Android <=4.0 only, PhantomJS 1 only\n        // push.apply(_, arraylike) throws on ancient WebKit\n        merge: function(first, second) {\n            var len = +second.length, j = 0, i = first.length;\n            for(; j < len; j++)first[i++] = second[j];\n            first.length = i;\n            return first;\n        },\n        grep: function(elems, callback, invert) {\n            var callbackInverse, matches = [], i = 0, length = elems.length, callbackExpect = !invert;\n            // Go through the array, only saving the items\n            // that pass the validator function\n            for(; i < length; i++){\n                callbackInverse = !callback(elems[i], i);\n                if (callbackInverse !== callbackExpect) matches.push(elems[i]);\n            }\n            return matches;\n        },\n        // arg is for internal usage only\n        map: function(elems, callback, arg) {\n            var length, value, i = 0, ret = [];\n            // Go through the array, translating each of the items to their new values\n            if (isArrayLike(elems)) {\n                length = elems.length;\n                for(; i < length; i++){\n                    value = callback(elems[i], i, arg);\n                    if (value != null) ret.push(value);\n                }\n            // Go through every key on the object,\n            } else for(i in elems){\n                value = callback(elems[i], i, arg);\n                if (value != null) ret.push(value);\n            }\n            // Flatten any nested arrays\n            return flat(ret);\n        },\n        // A global GUID counter for objects\n        guid: 1,\n        // jQuery.support is not used in Core but other projects attach their\n        // properties to it so it needs to exist.\n        support: support\n    });\n    if (typeof Symbol === \"function\") jQuery.fn[Symbol.iterator] = arr[Symbol.iterator];\n    // Populate the class2type map\n    jQuery.each(\"Boolean Number String Function Array Date RegExp Object Error Symbol\".split(\" \"), function(_i, name) {\n        class2type[\"[object \" + name + \"]\"] = name.toLowerCase();\n    });\n    function isArrayLike(obj) {\n        // Support: real iOS 8.2 only (not reproducible in simulator)\n        // `in` check used to prevent JIT error (gh-2145)\n        // hasOwn isn't used here due to false negatives\n        // regarding Nodelist length in IE\n        var length = !!obj && \"length\" in obj && obj.length, type = toType(obj);\n        if (isFunction(obj) || isWindow(obj)) return false;\n        return type === \"array\" || length === 0 || typeof length === \"number\" && length > 0 && length - 1 in obj;\n    }\n    function nodeName(elem, name) {\n        return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n    }\n    var pop = arr.pop;\n    var sort = arr.sort;\n    var splice = arr.splice;\n    var whitespace = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\";\n    var rtrimCSS = new RegExp(\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\", \"g\");\n    // Note: an element does not contain itself\n    jQuery.contains = function(a, b) {\n        var bup = b && b.parentNode;\n        return a === bup || !!(bup && bup.nodeType === 1 && // Support: IE 9 - 11+\n        // IE doesn't have `contains` on SVG.\n        (a.contains ? a.contains(bup) : a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16));\n    };\n    // CSS string/identifier serialization\n    // https://drafts.csswg.org/cssom/#common-serializing-idioms\n    var rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\x80-\\uFFFF\\w-]/g;\n    function fcssescape(ch, asCodePoint) {\n        if (asCodePoint) {\n            // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n            if (ch === \"\\0\") return \"\\uFFFD\";\n            // Control characters and (dependent upon position) numbers get escaped as code points\n            return ch.slice(0, -1) + \"\\\\\" + ch.charCodeAt(ch.length - 1).toString(16) + \" \";\n        }\n        // Other potentially-special ASCII characters get backslash-escaped\n        return \"\\\\\" + ch;\n    }\n    jQuery.escapeSelector = function(sel) {\n        return (sel + \"\").replace(rcssescape, fcssescape);\n    };\n    var preferredDoc = document, pushNative = push;\n    (function() {\n        var i, Expr, outermostContext, sortInput, hasDuplicate, push = pushNative, // Local document vars\n        document, documentElement, documentIsHTML, rbuggyQSA, matches, // Instance-specific data\n        expando = jQuery.expando, dirruns = 0, done = 0, classCache = createCache(), tokenCache = createCache(), compilerCache = createCache(), nonnativeSelectorCache = createCache(), sortOrder = function(a, b) {\n            if (a === b) hasDuplicate = true;\n            return 0;\n        }, booleans = \"checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped\", // Regular expressions\n        // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram\n        identifier = \"(?:\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace + \"?|\\\\\\\\[^\\\\r\\\\n\\\\f]|[\\\\w-]|[^\\0-\\\\x7f])+\", // Attribute selectors: https://www.w3.org/TR/selectors/#attribute-selectors\n        attributes = \"\\\\[\" + whitespace + \"*(\" + identifier + \")(?:\" + whitespace + // Operator (capture 2)\n        \"*([*^$|!~]?=)\" + whitespace + // \"Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]\"\n        \"*(?:'((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\"|(\" + identifier + \"))|)\" + whitespace + \"*\\\\]\", pseudos = \":(\" + identifier + \")(?:\\\\((\" + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n        // 1. quoted (capture 3; capture 4 or capture 5)\n        \"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" + // 2. simple (capture 6)\n        \"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" + // 3. anything else (capture 2)\n        \".*\" + \")\\\\)|)\", // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n        rwhitespace = new RegExp(whitespace + \"+\", \"g\"), rcomma = new RegExp(\"^\" + whitespace + \"*,\" + whitespace + \"*\"), rleadingCombinator = new RegExp(\"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" + whitespace + \"*\"), rdescend = new RegExp(whitespace + \"|>\"), rpseudo = new RegExp(pseudos), ridentifier = new RegExp(\"^\" + identifier + \"$\"), matchExpr = {\n            ID: new RegExp(\"^#(\" + identifier + \")\"),\n            CLASS: new RegExp(\"^\\\\.(\" + identifier + \")\"),\n            TAG: new RegExp(\"^(\" + identifier + \"|[*])\"),\n            ATTR: new RegExp(\"^\" + attributes),\n            PSEUDO: new RegExp(\"^\" + pseudos),\n            CHILD: new RegExp(\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" + whitespace + \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" + whitespace + \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\"),\n            bool: new RegExp(\"^(?:\" + booleans + \")$\", \"i\"),\n            // For use in libraries implementing .is()\n            // We use this for POS matching in `select`\n            needsContext: new RegExp(\"^\" + whitespace + \"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" + whitespace + \"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\")\n        }, rinputs = /^(?:input|select|textarea|button)$/i, rheader = /^h\\d$/i, // Easily-parseable/retrievable ID or TAG or CLASS selectors\n        rquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/, rsibling = /[+~]/, // CSS escapes\n        // https://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n        runescape = new RegExp(\"\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace + \"?|\\\\\\\\([^\\\\r\\\\n\\\\f])\", \"g\"), funescape = function(escape, nonHex) {\n            var high = \"0x\" + escape.slice(1) - 0x10000;\n            if (nonHex) // Strip the backslash prefix from a non-hex escape sequence\n            return nonHex;\n            // Replace a hexadecimal escape sequence with the encoded Unicode code point\n            // Support: IE <=11+\n            // For values outside the Basic Multilingual Plane (BMP), manually construct a\n            // surrogate pair\n            return high < 0 ? String.fromCharCode(high + 0x10000) : String.fromCharCode(high >> 10 | 0xD800, high & 0x3FF | 0xDC00);\n        }, // Used for iframes; see `setDocument`.\n        // Support: IE 9 - 11+, Edge 12 - 18+\n        // Removing the function wrapper causes a \"Permission Denied\"\n        // error in IE/Edge.\n        unloadHandler = function() {\n            setDocument();\n        }, inDisabledFieldset = addCombinator(function(elem) {\n            return elem.disabled === true && nodeName(elem, \"fieldset\");\n        }, {\n            dir: \"parentNode\",\n            next: \"legend\"\n        });\n        // Support: IE <=9 only\n        // Accessing document.activeElement can throw unexpectedly\n        // https://bugs.jquery.com/ticket/13393\n        function safeActiveElement() {\n            try {\n                return document.activeElement;\n            } catch (err) {}\n        }\n        // Optimize for push.apply( _, NodeList )\n        try {\n            push.apply(arr = slice.call(preferredDoc.childNodes), preferredDoc.childNodes);\n            // Support: Android <=4.0\n            // Detect silently failing push.apply\n            // eslint-disable-next-line no-unused-expressions\n            arr[preferredDoc.childNodes.length].nodeType;\n        } catch (e) {\n            push = {\n                apply: function(target, els) {\n                    pushNative.apply(target, slice.call(els));\n                },\n                call: function(target) {\n                    pushNative.apply(target, slice.call(arguments, 1));\n                }\n            };\n        }\n        function find(selector, context, results, seed) {\n            var m, i, elem, nid, match, groups, newSelector, newContext = context && context.ownerDocument, // nodeType defaults to 9, since context defaults to document\n            nodeType = context ? context.nodeType : 9;\n            results = results || [];\n            // Return early from calls with invalid selector or context\n            if (typeof selector !== \"string\" || !selector || nodeType !== 1 && nodeType !== 9 && nodeType !== 11) return results;\n            // Try to shortcut find operations (as opposed to filters) in HTML documents\n            if (!seed) {\n                setDocument(context);\n                context = context || document;\n                if (documentIsHTML) {\n                    // If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n                    // (excepting DocumentFragment context, where the methods don't exist)\n                    if (nodeType !== 11 && (match = rquickExpr.exec(selector))) {\n                        // ID selector\n                        if (m = match[1]) {\n                            // Document context\n                            if (nodeType === 9) {\n                                if (elem = context.getElementById(m)) // Support: IE 9 only\n                                // getElementById can match elements by name instead of ID\n                                {\n                                    if (elem.id === m) {\n                                        push.call(results, elem);\n                                        return results;\n                                    }\n                                } else return results;\n                            // Element context\n                            } else // Support: IE 9 only\n                            // getElementById can match elements by name instead of ID\n                            if (newContext && (elem = newContext.getElementById(m)) && find.contains(context, elem) && elem.id === m) {\n                                push.call(results, elem);\n                                return results;\n                            }\n                        // Type selector\n                        } else if (match[2]) {\n                            push.apply(results, context.getElementsByTagName(selector));\n                            return results;\n                        // Class selector\n                        } else if ((m = match[3]) && context.getElementsByClassName) {\n                            push.apply(results, context.getElementsByClassName(m));\n                            return results;\n                        }\n                    }\n                    // Take advantage of querySelectorAll\n                    if (!nonnativeSelectorCache[selector + \" \"] && (!rbuggyQSA || !rbuggyQSA.test(selector))) {\n                        newSelector = selector;\n                        newContext = context;\n                        // qSA considers elements outside a scoping root when evaluating child or\n                        // descendant combinators, which is not what we want.\n                        // In such cases, we work around the behavior by prefixing every selector in the\n                        // list with an ID selector referencing the scope context.\n                        // The technique has to be used as well when a leading combinator is used\n                        // as such selectors are not recognized by querySelectorAll.\n                        // Thanks to Andrew Dupont for this technique.\n                        if (nodeType === 1 && (rdescend.test(selector) || rleadingCombinator.test(selector))) {\n                            // Expand context for sibling selectors\n                            newContext = rsibling.test(selector) && testContext(context.parentNode) || context;\n                            // We can use :scope instead of the ID hack if the browser\n                            // supports it & if we're not changing the context.\n                            // Support: IE 11+, Edge 17 - 18+\n                            // IE/Edge sometimes throw a \"Permission denied\" error when\n                            // strict-comparing two documents; shallow comparisons work.\n                            // eslint-disable-next-line eqeqeq\n                            if (newContext != context || !support.scope) {\n                                // Capture the context ID, setting it first if necessary\n                                if (nid = context.getAttribute(\"id\")) nid = jQuery.escapeSelector(nid);\n                                else context.setAttribute(\"id\", nid = expando);\n                            }\n                            // Prefix every selector in the list\n                            groups = tokenize(selector);\n                            i = groups.length;\n                            while(i--)groups[i] = (nid ? \"#\" + nid : \":scope\") + \" \" + toSelector(groups[i]);\n                            newSelector = groups.join(\",\");\n                        }\n                        try {\n                            push.apply(results, newContext.querySelectorAll(newSelector));\n                            return results;\n                        } catch (qsaError) {\n                            nonnativeSelectorCache(selector, true);\n                        } finally{\n                            if (nid === expando) context.removeAttribute(\"id\");\n                        }\n                    }\n                }\n            }\n            // All others\n            return select(selector.replace(rtrimCSS, \"$1\"), context, results, seed);\n        }\n        /**\n * Create key-value caches of limited size\n * @returns {function(string, object)} Returns the Object data after storing it on itself with\n *\tproperty name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n *\tdeleting the oldest entry\n */ function createCache() {\n            var keys = [];\n            function cache(key, value) {\n                // Use (key + \" \") to avoid collision with native prototype properties\n                // (see https://github.com/jquery/sizzle/issues/157)\n                if (keys.push(key + \" \") > Expr.cacheLength) // Only keep the most recent entries\n                delete cache[keys.shift()];\n                return cache[key + \" \"] = value;\n            }\n            return cache;\n        }\n        /**\n * Mark a function for special use by jQuery selector module\n * @param {Function} fn The function to mark\n */ function markFunction(fn) {\n            fn[expando] = true;\n            return fn;\n        }\n        /**\n * Support testing using an element\n * @param {Function} fn Passed the created element and returns a boolean result\n */ function assert(fn) {\n            var el = document.createElement(\"fieldset\");\n            try {\n                return !!fn(el);\n            } catch (e) {\n                return false;\n            } finally{\n                // Remove from its parent by default\n                if (el.parentNode) el.parentNode.removeChild(el);\n                // release memory in IE\n                el = null;\n            }\n        }\n        /**\n * Returns a function to use in pseudos for input types\n * @param {String} type\n */ function createInputPseudo(type) {\n            return function(elem) {\n                return nodeName(elem, \"input\") && elem.type === type;\n            };\n        }\n        /**\n * Returns a function to use in pseudos for buttons\n * @param {String} type\n */ function createButtonPseudo(type) {\n            return function(elem) {\n                return (nodeName(elem, \"input\") || nodeName(elem, \"button\")) && elem.type === type;\n            };\n        }\n        /**\n * Returns a function to use in pseudos for :enabled/:disabled\n * @param {Boolean} disabled true for :disabled; false for :enabled\n */ function createDisabledPseudo(disabled) {\n            // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n            return function(elem) {\n                // Only certain elements can match :enabled or :disabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n                if (\"form\" in elem) {\n                    // Check for inherited disabledness on relevant non-disabled elements:\n                    // * listed form-associated elements in a disabled fieldset\n                    //   https://html.spec.whatwg.org/multipage/forms.html#category-listed\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n                    // * option elements in a disabled optgroup\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n                    // All such elements have a \"form\" property.\n                    if (elem.parentNode && elem.disabled === false) {\n                        // Option elements defer to a parent optgroup if present\n                        if (\"label\" in elem) {\n                            if (\"label\" in elem.parentNode) return elem.parentNode.disabled === disabled;\n                            else return elem.disabled === disabled;\n                        }\n                        // Support: IE 6 - 11+\n                        // Use the isDisabled shortcut property to check for disabled fieldset ancestors\n                        return elem.isDisabled === disabled || // Where there is no isDisabled, check manually\n                        elem.isDisabled !== !disabled && inDisabledFieldset(elem) === disabled;\n                    }\n                    return elem.disabled === disabled;\n                // Try to winnow out elements that can't be disabled before trusting the disabled property.\n                // Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n                // even exist on them, let alone have a boolean value.\n                } else if (\"label\" in elem) return elem.disabled === disabled;\n                // Remaining elements are neither :enabled nor :disabled\n                return false;\n            };\n        }\n        /**\n * Returns a function to use in pseudos for positionals\n * @param {Function} fn\n */ function createPositionalPseudo(fn) {\n            return markFunction(function(argument) {\n                argument = +argument;\n                return markFunction(function(seed, matches) {\n                    var j, matchIndexes = fn([], seed.length, argument), i = matchIndexes.length;\n                    // Match elements found at the specified indexes\n                    while(i--)if (seed[j = matchIndexes[i]]) seed[j] = !(matches[j] = seed[j]);\n                });\n            });\n        }\n        /**\n * Checks a node for validity as a jQuery selector context\n * @param {Element|Object=} context\n * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n */ function testContext(context) {\n            return context && typeof context.getElementsByTagName !== \"undefined\" && context;\n        }\n        /**\n * Sets document-related variables once based on the current document\n * @param {Element|Object} [node] An element or document object to use to set the document\n * @returns {Object} Returns the current document\n */ function setDocument(node) {\n            var subWindow, doc = node ? node.ownerDocument || node : preferredDoc;\n            // Return early if doc is invalid or already selected\n            // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            if (doc == document || doc.nodeType !== 9 || !doc.documentElement) return document;\n            // Update global variables\n            document = doc;\n            documentElement = document.documentElement;\n            documentIsHTML = !jQuery.isXMLDoc(document);\n            // Support: iOS 7 only, IE 9 - 11+\n            // Older browsers didn't support unprefixed `matches`.\n            matches = documentElement.matches || documentElement.webkitMatchesSelector || documentElement.msMatchesSelector;\n            // Support: IE 9 - 11+, Edge 12 - 18+\n            // Accessing iframe documents after unload throws \"permission denied\" errors\n            // (see trac-13936).\n            // Limit the fix to IE & Edge Legacy; despite Edge 15+ implementing `matches`,\n            // all IE 9+ and Edge Legacy versions implement `msMatchesSelector` as well.\n            if (documentElement.msMatchesSelector && // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            preferredDoc != document && (subWindow = document.defaultView) && subWindow.top !== subWindow) // Support: IE 9 - 11+, Edge 12 - 18+\n            subWindow.addEventListener(\"unload\", unloadHandler);\n            // Support: IE <10\n            // Check if getElementById returns elements by name\n            // The broken getElementById methods don't pick up programmatically-set names,\n            // so use a roundabout getElementsByName test\n            support.getById = assert(function(el) {\n                documentElement.appendChild(el).id = jQuery.expando;\n                return !document.getElementsByName || !document.getElementsByName(jQuery.expando).length;\n            });\n            // Support: IE 9 only\n            // Check to see if it's possible to do matchesSelector\n            // on a disconnected node.\n            support.disconnectedMatch = assert(function(el) {\n                return matches.call(el, \"*\");\n            });\n            // Support: IE 9 - 11+, Edge 12 - 18+\n            // IE/Edge don't support the :scope pseudo-class.\n            support.scope = assert(function() {\n                return document.querySelectorAll(\":scope\");\n            });\n            // Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only\n            // Make sure the `:has()` argument is parsed unforgivingly.\n            // We include `*` in the test to detect buggy implementations that are\n            // _selectively_ forgiving (specifically when the list includes at least\n            // one valid selector).\n            // Note that we treat complete lack of support for `:has()` as if it were\n            // spec-compliant support, which is fine because use of `:has()` in such\n            // environments will fail in the qSA path and fall back to jQuery traversal\n            // anyway.\n            support.cssHas = assert(function() {\n                try {\n                    document.querySelector(\":has(*,:jqfake)\");\n                    return false;\n                } catch (e) {\n                    return true;\n                }\n            });\n            // ID filter and find\n            if (support.getById) {\n                Expr.filter.ID = function(id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function(elem) {\n                        return elem.getAttribute(\"id\") === attrId;\n                    };\n                };\n                Expr.find.ID = function(id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var elem = context.getElementById(id);\n                        return elem ? [\n                            elem\n                        ] : [];\n                    }\n                };\n            } else {\n                Expr.filter.ID = function(id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function(elem) {\n                        var node = typeof elem.getAttributeNode !== \"undefined\" && elem.getAttributeNode(\"id\");\n                        return node && node.value === attrId;\n                    };\n                };\n                // Support: IE 6 - 7 only\n                // getElementById is not reliable as a find shortcut\n                Expr.find.ID = function(id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var node, i, elems, elem = context.getElementById(id);\n                        if (elem) {\n                            // Verify the id attribute\n                            node = elem.getAttributeNode(\"id\");\n                            if (node && node.value === id) return [\n                                elem\n                            ];\n                            // Fall back on getElementsByName\n                            elems = context.getElementsByName(id);\n                            i = 0;\n                            while(elem = elems[i++]){\n                                node = elem.getAttributeNode(\"id\");\n                                if (node && node.value === id) return [\n                                    elem\n                                ];\n                            }\n                        }\n                        return [];\n                    }\n                };\n            }\n            // Tag\n            Expr.find.TAG = function(tag, context) {\n                if (typeof context.getElementsByTagName !== \"undefined\") return context.getElementsByTagName(tag);\n                else return context.querySelectorAll(tag);\n            };\n            // Class\n            Expr.find.CLASS = function(className, context) {\n                if (typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML) return context.getElementsByClassName(className);\n            };\n            /* QSA/matchesSelector\n\t---------------------------------------------------------------------- */ // QSA and matchesSelector support\n            rbuggyQSA = [];\n            // Build QSA regex\n            // Regex strategy adopted from Diego Perini\n            assert(function(el) {\n                var input;\n                documentElement.appendChild(el).innerHTML = \"<a id='\" + expando + \"' href='' disabled='disabled'></a>\" + \"<select id='\" + expando + \"-\\r\\\\' disabled='disabled'>\" + \"<option selected=''></option></select>\";\n                // Support: iOS <=7 - 8 only\n                // Boolean attributes and \"value\" are not treated correctly in some XML documents\n                if (!el.querySelectorAll(\"[selected]\").length) rbuggyQSA.push(\"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\");\n                // Support: iOS <=7 - 8 only\n                if (!el.querySelectorAll(\"[id~=\" + expando + \"-]\").length) rbuggyQSA.push(\"~=\");\n                // Support: iOS 8 only\n                // https://bugs.webkit.org/show_bug.cgi?id=136851\n                // In-page `selector#id sibling-combinator selector` fails\n                if (!el.querySelectorAll(\"a#\" + expando + \"+*\").length) rbuggyQSA.push(\".#.+[+~]\");\n                // Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n                // In some of the document kinds, these selectors wouldn't work natively.\n                // This is probably OK but for backwards compatibility we want to maintain\n                // handling them through jQuery traversal in jQuery 3.x.\n                if (!el.querySelectorAll(\":checked\").length) rbuggyQSA.push(\":checked\");\n                // Support: Windows 8 Native Apps\n                // The type and name attributes are restricted during .innerHTML assignment\n                input = document.createElement(\"input\");\n                input.setAttribute(\"type\", \"hidden\");\n                el.appendChild(input).setAttribute(\"name\", \"D\");\n                // Support: IE 9 - 11+\n                // IE's :disabled selector does not pick up the children of disabled fieldsets\n                // Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n                // In some of the document kinds, these selectors wouldn't work natively.\n                // This is probably OK but for backwards compatibility we want to maintain\n                // handling them through jQuery traversal in jQuery 3.x.\n                documentElement.appendChild(el).disabled = true;\n                if (el.querySelectorAll(\":disabled\").length !== 2) rbuggyQSA.push(\":enabled\", \":disabled\");\n                // Support: IE 11+, Edge 15 - 18+\n                // IE 11/Edge don't find elements on a `[name='']` query in some cases.\n                // Adding a temporary attribute to the document before the selection works\n                // around the issue.\n                // Interestingly, IE 10 & older don't seem to have the issue.\n                input = document.createElement(\"input\");\n                input.setAttribute(\"name\", \"\");\n                el.appendChild(input);\n                if (!el.querySelectorAll(\"[name='']\").length) rbuggyQSA.push(\"\\\\[\" + whitespace + \"*name\" + whitespace + \"*=\" + whitespace + \"*(?:''|\\\"\\\")\");\n            });\n            if (!support.cssHas) // Support: Chrome 105 - 110+, Safari 15.4 - 16.3+\n            // Our regular `try-catch` mechanism fails to detect natively-unsupported\n            // pseudo-classes inside `:has()` (such as `:has(:contains(\"Foo\"))`)\n            // in browsers that parse the `:has()` argument as a forgiving selector list.\n            // https://drafts.csswg.org/selectors/#relational now requires the argument\n            // to be parsed unforgivingly, but browsers have not yet fully adjusted.\n            rbuggyQSA.push(\":has\");\n            rbuggyQSA = rbuggyQSA.length && new RegExp(rbuggyQSA.join(\"|\"));\n            /* Sorting\n\t---------------------------------------------------------------------- */ // Document order sorting\n            sortOrder = function(a, b) {\n                // Flag for duplicate removal\n                if (a === b) {\n                    hasDuplicate = true;\n                    return 0;\n                }\n                // Sort on method existence if only one input has compareDocumentPosition\n                var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n                if (compare) return compare;\n                // Calculate position if both inputs belong to the same document\n                // Support: IE 11+, Edge 17 - 18+\n                // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                // two documents; shallow comparisons work.\n                // eslint-disable-next-line eqeqeq\n                compare = (a.ownerDocument || a) == (b.ownerDocument || b) ? a.compareDocumentPosition(b) : // Otherwise we know they are disconnected\n                1;\n                // Disconnected nodes\n                if (compare & 1 || !support.sortDetached && b.compareDocumentPosition(a) === compare) {\n                    // Choose the first element that is related to our preferred document\n                    // Support: IE 11+, Edge 17 - 18+\n                    // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                    // two documents; shallow comparisons work.\n                    // eslint-disable-next-line eqeqeq\n                    if (a === document || a.ownerDocument == preferredDoc && find.contains(preferredDoc, a)) return -1;\n                    // Support: IE 11+, Edge 17 - 18+\n                    // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                    // two documents; shallow comparisons work.\n                    // eslint-disable-next-line eqeqeq\n                    if (b === document || b.ownerDocument == preferredDoc && find.contains(preferredDoc, b)) return 1;\n                    // Maintain original order\n                    return sortInput ? indexOf.call(sortInput, a) - indexOf.call(sortInput, b) : 0;\n                }\n                return compare & 4 ? -1 : 1;\n            };\n            return document;\n        }\n        find.matches = function(expr, elements) {\n            return find(expr, null, null, elements);\n        };\n        find.matchesSelector = function(elem, expr) {\n            setDocument(elem);\n            if (documentIsHTML && !nonnativeSelectorCache[expr + \" \"] && (!rbuggyQSA || !rbuggyQSA.test(expr))) try {\n                var ret = matches.call(elem, expr);\n                // IE 9's matchesSelector returns false on disconnected nodes\n                if (ret || support.disconnectedMatch || // As well, disconnected nodes are said to be in a document\n                // fragment in IE 9\n                elem.document && elem.document.nodeType !== 11) return ret;\n            } catch (e) {\n                nonnativeSelectorCache(expr, true);\n            }\n            return find(expr, document, null, [\n                elem\n            ]).length > 0;\n        };\n        find.contains = function(context, elem) {\n            // Set document vars if needed\n            // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            if ((context.ownerDocument || context) != document) setDocument(context);\n            return jQuery.contains(context, elem);\n        };\n        find.attr = function(elem, name) {\n            // Set document vars if needed\n            // Support: IE 11+, Edge 17 - 18+\n            // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n            // two documents; shallow comparisons work.\n            // eslint-disable-next-line eqeqeq\n            if ((elem.ownerDocument || elem) != document) setDocument(elem);\n            var fn = Expr.attrHandle[name.toLowerCase()], // Don't get fooled by Object.prototype properties (see trac-13807)\n            val = fn && hasOwn.call(Expr.attrHandle, name.toLowerCase()) ? fn(elem, name, !documentIsHTML) : undefined;\n            if (val !== undefined) return val;\n            return elem.getAttribute(name);\n        };\n        find.error = function(msg) {\n            throw new Error(\"Syntax error, unrecognized expression: \" + msg);\n        };\n        /**\n * Document sorting and removing duplicates\n * @param {ArrayLike} results\n */ jQuery.uniqueSort = function(results) {\n            var elem, duplicates = [], j = 0, i = 0;\n            // Unless we *know* we can detect duplicates, assume their presence\n            //\n            // Support: Android <=4.0+\n            // Testing for detecting duplicates is unpredictable so instead assume we can't\n            // depend on duplicate detection in all browsers without a stable sort.\n            hasDuplicate = !support.sortStable;\n            sortInput = !support.sortStable && slice.call(results, 0);\n            sort.call(results, sortOrder);\n            if (hasDuplicate) {\n                while(elem = results[i++])if (elem === results[i]) j = duplicates.push(i);\n                while(j--)splice.call(results, duplicates[j], 1);\n            }\n            // Clear input after sorting to release objects\n            // See https://github.com/jquery/sizzle/pull/225\n            sortInput = null;\n            return results;\n        };\n        jQuery.fn.uniqueSort = function() {\n            return this.pushStack(jQuery.uniqueSort(slice.apply(this)));\n        };\n        Expr = jQuery.expr = {\n            // Can be adjusted by the user\n            cacheLength: 50,\n            createPseudo: markFunction,\n            match: matchExpr,\n            attrHandle: {},\n            find: {},\n            relative: {\n                \">\": {\n                    dir: \"parentNode\",\n                    first: true\n                },\n                \" \": {\n                    dir: \"parentNode\"\n                },\n                \"+\": {\n                    dir: \"previousSibling\",\n                    first: true\n                },\n                \"~\": {\n                    dir: \"previousSibling\"\n                }\n            },\n            preFilter: {\n                ATTR: function(match) {\n                    match[1] = match[1].replace(runescape, funescape);\n                    // Move the given value to match[3] whether quoted or unquoted\n                    match[3] = (match[3] || match[4] || match[5] || \"\").replace(runescape, funescape);\n                    if (match[2] === \"~=\") match[3] = \" \" + match[3] + \" \";\n                    return match.slice(0, 4);\n                },\n                CHILD: function(match) {\n                    /* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/ match[1] = match[1].toLowerCase();\n                    if (match[1].slice(0, 3) === \"nth\") {\n                        // nth-* requires argument\n                        if (!match[3]) find.error(match[0]);\n                        // numeric x and y parameters for Expr.filter.CHILD\n                        // remember that false/true cast respectively to 0/1\n                        match[4] = +(match[4] ? match[5] + (match[6] || 1) : 2 * (match[3] === \"even\" || match[3] === \"odd\"));\n                        match[5] = +(match[7] + match[8] || match[3] === \"odd\");\n                    // other types prohibit arguments\n                    } else if (match[3]) find.error(match[0]);\n                    return match;\n                },\n                PSEUDO: function(match) {\n                    var excess, unquoted = !match[6] && match[2];\n                    if (matchExpr.CHILD.test(match[0])) return null;\n                    // Accept quoted arguments as-is\n                    if (match[3]) match[2] = match[4] || match[5] || \"\";\n                    else if (unquoted && rpseudo.test(unquoted) && // Get excess from tokenize (recursively)\n                    (excess = tokenize(unquoted, true)) && // advance to the next closing parenthesis\n                    (excess = unquoted.indexOf(\")\", unquoted.length - excess) - unquoted.length)) {\n                        // excess is a negative index\n                        match[0] = match[0].slice(0, excess);\n                        match[2] = unquoted.slice(0, excess);\n                    }\n                    // Return only captures needed by the pseudo filter method (type and argument)\n                    return match.slice(0, 3);\n                }\n            },\n            filter: {\n                TAG: function(nodeNameSelector) {\n                    var expectedNodeName = nodeNameSelector.replace(runescape, funescape).toLowerCase();\n                    return nodeNameSelector === \"*\" ? function() {\n                        return true;\n                    } : function(elem) {\n                        return nodeName(elem, expectedNodeName);\n                    };\n                },\n                CLASS: function(className) {\n                    var pattern = classCache[className + \" \"];\n                    return pattern || (pattern = new RegExp(\"(^|\" + whitespace + \")\" + className + \"(\" + whitespace + \"|$)\"), classCache(className, function(elem) {\n                        return pattern.test(typeof elem.className === \"string\" && elem.className || typeof elem.getAttribute !== \"undefined\" && elem.getAttribute(\"class\") || \"\");\n                    }));\n                },\n                ATTR: function(name, operator, check) {\n                    return function(elem) {\n                        var result = find.attr(elem, name);\n                        if (result == null) return operator === \"!=\";\n                        if (!operator) return true;\n                        result += \"\";\n                        if (operator === \"=\") return result === check;\n                        if (operator === \"!=\") return result !== check;\n                        if (operator === \"^=\") return check && result.indexOf(check) === 0;\n                        if (operator === \"*=\") return check && result.indexOf(check) > -1;\n                        if (operator === \"$=\") return check && result.slice(-check.length) === check;\n                        if (operator === \"~=\") return (\" \" + result.replace(rwhitespace, \" \") + \" \").indexOf(check) > -1;\n                        if (operator === \"|=\") return result === check || result.slice(0, check.length + 1) === check + \"-\";\n                        return false;\n                    };\n                },\n                CHILD: function(type, what, _argument, first, last) {\n                    var simple = type.slice(0, 3) !== \"nth\", forward = type.slice(-4) !== \"last\", ofType = what === \"of-type\";\n                    return first === 1 && last === 0 ? // Shortcut for :nth-*(n)\n                    function(elem) {\n                        return !!elem.parentNode;\n                    } : function(elem, _context, xml) {\n                        var cache, outerCache, node, nodeIndex, start, dir = simple !== forward ? \"nextSibling\" : \"previousSibling\", parent = elem.parentNode, name = ofType && elem.nodeName.toLowerCase(), useCache = !xml && !ofType, diff = false;\n                        if (parent) {\n                            // :(first|last|only)-(child|of-type)\n                            if (simple) {\n                                while(dir){\n                                    node = elem;\n                                    while(node = node[dir]){\n                                        if (ofType ? nodeName(node, name) : node.nodeType === 1) return false;\n                                    }\n                                    // Reverse direction for :only-* (if we haven't yet done so)\n                                    start = dir = type === \"only\" && !start && \"nextSibling\";\n                                }\n                                return true;\n                            }\n                            start = [\n                                forward ? parent.firstChild : parent.lastChild\n                            ];\n                            // non-xml :nth-child(...) stores cache data on `parent`\n                            if (forward && useCache) {\n                                // Seek `elem` from a previously-cached index\n                                outerCache = parent[expando] || (parent[expando] = {});\n                                cache = outerCache[type] || [];\n                                nodeIndex = cache[0] === dirruns && cache[1];\n                                diff = nodeIndex && cache[2];\n                                node = nodeIndex && parent.childNodes[nodeIndex];\n                                while(node = ++nodeIndex && node && node[dir] || // Fallback to seeking `elem` from the start\n                                (diff = nodeIndex = 0) || start.pop())// When found, cache indexes on `parent` and break\n                                if (node.nodeType === 1 && ++diff && node === elem) {\n                                    outerCache[type] = [\n                                        dirruns,\n                                        nodeIndex,\n                                        diff\n                                    ];\n                                    break;\n                                }\n                            } else {\n                                // Use previously-cached element index if available\n                                if (useCache) {\n                                    outerCache = elem[expando] || (elem[expando] = {});\n                                    cache = outerCache[type] || [];\n                                    nodeIndex = cache[0] === dirruns && cache[1];\n                                    diff = nodeIndex;\n                                }\n                                // xml :nth-child(...)\n                                // or :nth-last-child(...) or :nth(-last)?-of-type(...)\n                                if (diff === false) {\n                                    // Use the same loop as above to seek `elem` from the start\n                                    while(node = ++nodeIndex && node && node[dir] || (diff = nodeIndex = 0) || start.pop())if ((ofType ? nodeName(node, name) : node.nodeType === 1) && ++diff) {\n                                        // Cache the index of each encountered element\n                                        if (useCache) {\n                                            outerCache = node[expando] || (node[expando] = {});\n                                            outerCache[type] = [\n                                                dirruns,\n                                                diff\n                                            ];\n                                        }\n                                        if (node === elem) break;\n                                    }\n                                }\n                            }\n                            // Incorporate the offset, then check against cycle size\n                            diff -= last;\n                            return diff === first || diff % first === 0 && diff / first >= 0;\n                        }\n                    };\n                },\n                PSEUDO: function(pseudo, argument) {\n                    // pseudo-class names are case-insensitive\n                    // https://www.w3.org/TR/selectors/#pseudo-classes\n                    // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n                    // Remember that setFilters inherits from pseudos\n                    var args, fn = Expr.pseudos[pseudo] || Expr.setFilters[pseudo.toLowerCase()] || find.error(\"unsupported pseudo: \" + pseudo);\n                    // The user may use createPseudo to indicate that\n                    // arguments are needed to create the filter function\n                    // just as jQuery does\n                    if (fn[expando]) return fn(argument);\n                    // But maintain support for old signatures\n                    if (fn.length > 1) {\n                        args = [\n                            pseudo,\n                            pseudo,\n                            \"\",\n                            argument\n                        ];\n                        return Expr.setFilters.hasOwnProperty(pseudo.toLowerCase()) ? markFunction(function(seed, matches) {\n                            var idx, matched = fn(seed, argument), i = matched.length;\n                            while(i--){\n                                idx = indexOf.call(seed, matched[i]);\n                                seed[idx] = !(matches[idx] = matched[i]);\n                            }\n                        }) : function(elem) {\n                            return fn(elem, 0, args);\n                        };\n                    }\n                    return fn;\n                }\n            },\n            pseudos: {\n                // Potentially complex pseudos\n                not: markFunction(function(selector) {\n                    // Trim the selector passed to compile\n                    // to avoid treating leading and trailing\n                    // spaces as combinators\n                    var input = [], results = [], matcher = compile(selector.replace(rtrimCSS, \"$1\"));\n                    return matcher[expando] ? markFunction(function(seed, matches, _context, xml) {\n                        var elem, unmatched = matcher(seed, null, xml, []), i = seed.length;\n                        // Match elements unmatched by `matcher`\n                        while(i--)if (elem = unmatched[i]) seed[i] = !(matches[i] = elem);\n                    }) : function(elem, _context, xml) {\n                        input[0] = elem;\n                        matcher(input, null, xml, results);\n                        // Don't keep the element\n                        // (see https://github.com/jquery/sizzle/issues/299)\n                        input[0] = null;\n                        return !results.pop();\n                    };\n                }),\n                has: markFunction(function(selector) {\n                    return function(elem) {\n                        return find(selector, elem).length > 0;\n                    };\n                }),\n                contains: markFunction(function(text) {\n                    text = text.replace(runescape, funescape);\n                    return function(elem) {\n                        return (elem.textContent || jQuery.text(elem)).indexOf(text) > -1;\n                    };\n                }),\n                // \"Whether an element is represented by a :lang() selector\n                // is based solely on the element's language value\n                // being equal to the identifier C,\n                // or beginning with the identifier C immediately followed by \"-\".\n                // The matching of C against the element's language value is performed case-insensitively.\n                // The identifier C does not have to be a valid language name.\"\n                // https://www.w3.org/TR/selectors/#lang-pseudo\n                lang: markFunction(function(lang) {\n                    // lang value must be a valid identifier\n                    if (!ridentifier.test(lang || \"\")) find.error(\"unsupported lang: \" + lang);\n                    lang = lang.replace(runescape, funescape).toLowerCase();\n                    return function(elem) {\n                        var elemLang;\n                        do if (elemLang = documentIsHTML ? elem.lang : elem.getAttribute(\"xml:lang\") || elem.getAttribute(\"lang\")) {\n                            elemLang = elemLang.toLowerCase();\n                            return elemLang === lang || elemLang.indexOf(lang + \"-\") === 0;\n                        }\n                        while ((elem = elem.parentNode) && elem.nodeType === 1);\n                        return false;\n                    };\n                }),\n                // Miscellaneous\n                target: function(elem) {\n                    var hash = window1.location && window1.location.hash;\n                    return hash && hash.slice(1) === elem.id;\n                },\n                root: function(elem) {\n                    return elem === documentElement;\n                },\n                focus: function(elem) {\n                    return elem === safeActiveElement() && document.hasFocus() && !!(elem.type || elem.href || ~elem.tabIndex);\n                },\n                // Boolean properties\n                enabled: createDisabledPseudo(false),\n                disabled: createDisabledPseudo(true),\n                checked: function(elem) {\n                    // In CSS3, :checked should return both checked and selected elements\n                    // https://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n                    return nodeName(elem, \"input\") && !!elem.checked || nodeName(elem, \"option\") && !!elem.selected;\n                },\n                selected: function(elem) {\n                    // Support: IE <=11+\n                    // Accessing the selectedIndex property\n                    // forces the browser to treat the default option as\n                    // selected when in an optgroup.\n                    if (elem.parentNode) // eslint-disable-next-line no-unused-expressions\n                    elem.parentNode.selectedIndex;\n                    return elem.selected === true;\n                },\n                // Contents\n                empty: function(elem) {\n                    // https://www.w3.org/TR/selectors/#empty-pseudo\n                    // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n                    //   but not by others (comment: 8; processing instruction: 7; etc.)\n                    // nodeType < 6 works because attributes (2) do not appear as children\n                    for(elem = elem.firstChild; elem; elem = elem.nextSibling){\n                        if (elem.nodeType < 6) return false;\n                    }\n                    return true;\n                },\n                parent: function(elem) {\n                    return !Expr.pseudos.empty(elem);\n                },\n                // Element/input types\n                header: function(elem) {\n                    return rheader.test(elem.nodeName);\n                },\n                input: function(elem) {\n                    return rinputs.test(elem.nodeName);\n                },\n                button: function(elem) {\n                    return nodeName(elem, \"input\") && elem.type === \"button\" || nodeName(elem, \"button\");\n                },\n                text: function(elem) {\n                    var attr;\n                    return nodeName(elem, \"input\") && elem.type === \"text\" && // Support: IE <10 only\n                    // New HTML5 attribute values (e.g., \"search\") appear\n                    // with elem.type === \"text\"\n                    ((attr = elem.getAttribute(\"type\")) == null || attr.toLowerCase() === \"text\");\n                },\n                // Position-in-collection\n                first: createPositionalPseudo(function() {\n                    return [\n                        0\n                    ];\n                }),\n                last: createPositionalPseudo(function(_matchIndexes, length) {\n                    return [\n                        length - 1\n                    ];\n                }),\n                eq: createPositionalPseudo(function(_matchIndexes, length, argument) {\n                    return [\n                        argument < 0 ? argument + length : argument\n                    ];\n                }),\n                even: createPositionalPseudo(function(matchIndexes, length) {\n                    var i = 0;\n                    for(; i < length; i += 2)matchIndexes.push(i);\n                    return matchIndexes;\n                }),\n                odd: createPositionalPseudo(function(matchIndexes, length) {\n                    var i = 1;\n                    for(; i < length; i += 2)matchIndexes.push(i);\n                    return matchIndexes;\n                }),\n                lt: createPositionalPseudo(function(matchIndexes, length, argument) {\n                    var i;\n                    if (argument < 0) i = argument + length;\n                    else if (argument > length) i = length;\n                    else i = argument;\n                    for(; --i >= 0;)matchIndexes.push(i);\n                    return matchIndexes;\n                }),\n                gt: createPositionalPseudo(function(matchIndexes, length, argument) {\n                    var i = argument < 0 ? argument + length : argument;\n                    for(; ++i < length;)matchIndexes.push(i);\n                    return matchIndexes;\n                })\n            }\n        };\n        Expr.pseudos.nth = Expr.pseudos.eq;\n        // Add button/input type pseudos\n        for(i in {\n            radio: true,\n            checkbox: true,\n            file: true,\n            password: true,\n            image: true\n        })Expr.pseudos[i] = createInputPseudo(i);\n        for(i in {\n            submit: true,\n            reset: true\n        })Expr.pseudos[i] = createButtonPseudo(i);\n        // Easy API for creating new setFilters\n        function setFilters() {}\n        setFilters.prototype = Expr.filters = Expr.pseudos;\n        Expr.setFilters = new setFilters();\n        function tokenize(selector, parseOnly) {\n            var matched, match, tokens, type, soFar, groups, preFilters, cached = tokenCache[selector + \" \"];\n            if (cached) return parseOnly ? 0 : cached.slice(0);\n            soFar = selector;\n            groups = [];\n            preFilters = Expr.preFilter;\n            while(soFar){\n                // Comma and first run\n                if (!matched || (match = rcomma.exec(soFar))) {\n                    if (match) // Don't consume trailing commas as valid\n                    soFar = soFar.slice(match[0].length) || soFar;\n                    groups.push(tokens = []);\n                }\n                matched = false;\n                // Combinators\n                if (match = rleadingCombinator.exec(soFar)) {\n                    matched = match.shift();\n                    tokens.push({\n                        value: matched,\n                        // Cast descendant combinators to space\n                        type: match[0].replace(rtrimCSS, \" \")\n                    });\n                    soFar = soFar.slice(matched.length);\n                }\n                // Filters\n                for(type in Expr.filter)if ((match = matchExpr[type].exec(soFar)) && (!preFilters[type] || (match = preFilters[type](match)))) {\n                    matched = match.shift();\n                    tokens.push({\n                        value: matched,\n                        type: type,\n                        matches: match\n                    });\n                    soFar = soFar.slice(matched.length);\n                }\n                if (!matched) break;\n            }\n            // Return the length of the invalid excess\n            // if we're just parsing\n            // Otherwise, throw an error or return tokens\n            if (parseOnly) return soFar.length;\n            return soFar ? find.error(selector) : // Cache the tokens\n            tokenCache(selector, groups).slice(0);\n        }\n        function toSelector(tokens) {\n            var i = 0, len = tokens.length, selector = \"\";\n            for(; i < len; i++)selector += tokens[i].value;\n            return selector;\n        }\n        function addCombinator(matcher, combinator, base) {\n            var dir = combinator.dir, skip = combinator.next, key = skip || dir, checkNonElements = base && key === \"parentNode\", doneName = done++;\n            return combinator.first ? // Check against closest ancestor/preceding element\n            function(elem, context, xml) {\n                while(elem = elem[dir]){\n                    if (elem.nodeType === 1 || checkNonElements) return matcher(elem, context, xml);\n                }\n                return false;\n            } : // Check against all ancestor/preceding elements\n            function(elem, context, xml) {\n                var oldCache, outerCache, newCache = [\n                    dirruns,\n                    doneName\n                ];\n                // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n                if (xml) {\n                    while(elem = elem[dir])if (elem.nodeType === 1 || checkNonElements) {\n                        if (matcher(elem, context, xml)) return true;\n                    }\n                } else {\n                    while(elem = elem[dir])if (elem.nodeType === 1 || checkNonElements) {\n                        outerCache = elem[expando] || (elem[expando] = {});\n                        if (skip && nodeName(elem, skip)) elem = elem[dir] || elem;\n                        else if ((oldCache = outerCache[key]) && oldCache[0] === dirruns && oldCache[1] === doneName) // Assign to newCache so results back-propagate to previous elements\n                        return newCache[2] = oldCache[2];\n                        else {\n                            // Reuse newcache so results back-propagate to previous elements\n                            outerCache[key] = newCache;\n                            // A match means we're done; a fail means we have to keep checking\n                            if (newCache[2] = matcher(elem, context, xml)) return true;\n                        }\n                    }\n                }\n                return false;\n            };\n        }\n        function elementMatcher(matchers) {\n            return matchers.length > 1 ? function(elem, context, xml) {\n                var i = matchers.length;\n                while(i--){\n                    if (!matchers[i](elem, context, xml)) return false;\n                }\n                return true;\n            } : matchers[0];\n        }\n        function multipleContexts(selector, contexts, results) {\n            var i = 0, len = contexts.length;\n            for(; i < len; i++)find(selector, contexts[i], results);\n            return results;\n        }\n        function condense(unmatched, map, filter, context, xml) {\n            var elem, newUnmatched = [], i = 0, len = unmatched.length, mapped = map != null;\n            for(; i < len; i++){\n                if (elem = unmatched[i]) {\n                    if (!filter || filter(elem, context, xml)) {\n                        newUnmatched.push(elem);\n                        if (mapped) map.push(i);\n                    }\n                }\n            }\n            return newUnmatched;\n        }\n        function setMatcher(preFilter, selector, matcher, postFilter, postFinder, postSelector) {\n            if (postFilter && !postFilter[expando]) postFilter = setMatcher(postFilter);\n            if (postFinder && !postFinder[expando]) postFinder = setMatcher(postFinder, postSelector);\n            return markFunction(function(seed, results, context, xml) {\n                var temp, i, elem, matcherOut, preMap = [], postMap = [], preexisting = results.length, // Get initial elements from seed or context\n                elems = seed || multipleContexts(selector || \"*\", context.nodeType ? [\n                    context\n                ] : context, []), // Prefilter to get matcher input, preserving a map for seed-results synchronization\n                matcherIn = preFilter && (seed || !selector) ? condense(elems, preMap, preFilter, context, xml) : elems;\n                if (matcher) {\n                    // If we have a postFinder, or filtered seed, or non-seed postFilter\n                    // or preexisting results,\n                    matcherOut = postFinder || (seed ? preFilter : preexisting || postFilter) ? // ...intermediate processing is necessary\n                    [] : // ...otherwise use results directly\n                    results;\n                    // Find primary matches\n                    matcher(matcherIn, matcherOut, context, xml);\n                } else matcherOut = matcherIn;\n                // Apply postFilter\n                if (postFilter) {\n                    temp = condense(matcherOut, postMap);\n                    postFilter(temp, [], context, xml);\n                    // Un-match failing elements by moving them back to matcherIn\n                    i = temp.length;\n                    while(i--)if (elem = temp[i]) matcherOut[postMap[i]] = !(matcherIn[postMap[i]] = elem);\n                }\n                if (seed) {\n                    if (postFinder || preFilter) {\n                        if (postFinder) {\n                            // Get the final matcherOut by condensing this intermediate into postFinder contexts\n                            temp = [];\n                            i = matcherOut.length;\n                            while(i--)if (elem = matcherOut[i]) // Restore matcherIn since elem is not yet a final match\n                            temp.push(matcherIn[i] = elem);\n                            postFinder(null, matcherOut = [], temp, xml);\n                        }\n                        // Move matched elements from seed to results to keep them synchronized\n                        i = matcherOut.length;\n                        while(i--)if ((elem = matcherOut[i]) && (temp = postFinder ? indexOf.call(seed, elem) : preMap[i]) > -1) seed[temp] = !(results[temp] = elem);\n                    }\n                } else {\n                    matcherOut = condense(matcherOut === results ? matcherOut.splice(preexisting, matcherOut.length) : matcherOut);\n                    if (postFinder) postFinder(null, results, matcherOut, xml);\n                    else push.apply(results, matcherOut);\n                }\n            });\n        }\n        function matcherFromTokens(tokens) {\n            var checkContext, matcher, j, len = tokens.length, leadingRelative = Expr.relative[tokens[0].type], implicitRelative = leadingRelative || Expr.relative[\" \"], i = leadingRelative ? 1 : 0, // The foundational matcher ensures that elements are reachable from top-level context(s)\n            matchContext = addCombinator(function(elem) {\n                return elem === checkContext;\n            }, implicitRelative, true), matchAnyContext = addCombinator(function(elem) {\n                return indexOf.call(checkContext, elem) > -1;\n            }, implicitRelative, true), matchers = [\n                function(elem, context, xml) {\n                    // Support: IE 11+, Edge 17 - 18+\n                    // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                    // two documents; shallow comparisons work.\n                    // eslint-disable-next-line eqeqeq\n                    var ret = !leadingRelative && (xml || context != outermostContext) || ((checkContext = context).nodeType ? matchContext(elem, context, xml) : matchAnyContext(elem, context, xml));\n                    // Avoid hanging onto element\n                    // (see https://github.com/jquery/sizzle/issues/299)\n                    checkContext = null;\n                    return ret;\n                }\n            ];\n            for(; i < len; i++)if (matcher = Expr.relative[tokens[i].type]) matchers = [\n                addCombinator(elementMatcher(matchers), matcher)\n            ];\n            else {\n                matcher = Expr.filter[tokens[i].type].apply(null, tokens[i].matches);\n                // Return special upon seeing a positional matcher\n                if (matcher[expando]) {\n                    // Find the next relative operator (if any) for proper handling\n                    j = ++i;\n                    for(; j < len; j++){\n                        if (Expr.relative[tokens[j].type]) break;\n                    }\n                    return setMatcher(i > 1 && elementMatcher(matchers), i > 1 && toSelector(// If the preceding token was a descendant combinator, insert an implicit any-element `*`\n                    tokens.slice(0, i - 1).concat({\n                        value: tokens[i - 2].type === \" \" ? \"*\" : \"\"\n                    })).replace(rtrimCSS, \"$1\"), matcher, i < j && matcherFromTokens(tokens.slice(i, j)), j < len && matcherFromTokens(tokens = tokens.slice(j)), j < len && toSelector(tokens));\n                }\n                matchers.push(matcher);\n            }\n            return elementMatcher(matchers);\n        }\n        function matcherFromGroupMatchers(elementMatchers, setMatchers) {\n            var bySet = setMatchers.length > 0, byElement = elementMatchers.length > 0, superMatcher = function(seed, context, xml, results, outermost) {\n                var elem, j, matcher, matchedCount = 0, i = \"0\", unmatched = seed && [], setMatched = [], contextBackup = outermostContext, // We must always have either seed elements or outermost context\n                elems = seed || byElement && Expr.find.TAG(\"*\", outermost), // Use integer dirruns iff this is the outermost matcher\n                dirrunsUnique = dirruns += contextBackup == null ? 1 : Math.random() || 0.1, len = elems.length;\n                if (outermost) // Support: IE 11+, Edge 17 - 18+\n                // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                // two documents; shallow comparisons work.\n                // eslint-disable-next-line eqeqeq\n                outermostContext = context == document || context || outermost;\n                // Add elements passing elementMatchers directly to results\n                // Support: iOS <=7 - 9 only\n                // Tolerate NodeList properties (IE: \"length\"; Safari: <number>) matching\n                // elements by id. (see trac-14142)\n                for(; i !== len && (elem = elems[i]) != null; i++){\n                    if (byElement && elem) {\n                        j = 0;\n                        // Support: IE 11+, Edge 17 - 18+\n                        // IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n                        // two documents; shallow comparisons work.\n                        // eslint-disable-next-line eqeqeq\n                        if (!context && elem.ownerDocument != document) {\n                            setDocument(elem);\n                            xml = !documentIsHTML;\n                        }\n                        while(matcher = elementMatchers[j++])if (matcher(elem, context || document, xml)) {\n                            push.call(results, elem);\n                            break;\n                        }\n                        if (outermost) dirruns = dirrunsUnique;\n                    }\n                    // Track unmatched elements for set filters\n                    if (bySet) {\n                        // They will have gone through all possible matchers\n                        if (elem = !matcher && elem) matchedCount--;\n                        // Lengthen the array for every element, matched or not\n                        if (seed) unmatched.push(elem);\n                    }\n                }\n                // `i` is now the count of elements visited above, and adding it to `matchedCount`\n                // makes the latter nonnegative.\n                matchedCount += i;\n                // Apply set filters to unmatched elements\n                // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n                // equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n                // no element matchers and no seed.\n                // Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n                // case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n                // numerically zero.\n                if (bySet && i !== matchedCount) {\n                    j = 0;\n                    while(matcher = setMatchers[j++])matcher(unmatched, setMatched, context, xml);\n                    if (seed) {\n                        // Reintegrate element matches to eliminate the need for sorting\n                        if (matchedCount > 0) {\n                            while(i--)if (!(unmatched[i] || setMatched[i])) setMatched[i] = pop.call(results);\n                        }\n                        // Discard index placeholder values to get only actual matches\n                        setMatched = condense(setMatched);\n                    }\n                    // Add matches to results\n                    push.apply(results, setMatched);\n                    // Seedless set matches succeeding multiple successful matchers stipulate sorting\n                    if (outermost && !seed && setMatched.length > 0 && matchedCount + setMatchers.length > 1) jQuery.uniqueSort(results);\n                }\n                // Override manipulation of globals by nested matchers\n                if (outermost) {\n                    dirruns = dirrunsUnique;\n                    outermostContext = contextBackup;\n                }\n                return unmatched;\n            };\n            return bySet ? markFunction(superMatcher) : superMatcher;\n        }\n        function compile(selector, match /* Internal Use Only */ ) {\n            var i, setMatchers = [], elementMatchers = [], cached = compilerCache[selector + \" \"];\n            if (!cached) {\n                // Generate a function of recursive functions that can be used to check each element\n                if (!match) match = tokenize(selector);\n                i = match.length;\n                while(i--){\n                    cached = matcherFromTokens(match[i]);\n                    if (cached[expando]) setMatchers.push(cached);\n                    else elementMatchers.push(cached);\n                }\n                // Cache the compiled function\n                cached = compilerCache(selector, matcherFromGroupMatchers(elementMatchers, setMatchers));\n                // Save selector and tokenization\n                cached.selector = selector;\n            }\n            return cached;\n        }\n        /**\n * A low-level selection function that works with jQuery's compiled\n *  selector functions\n * @param {String|Function} selector A selector or a pre-compiled\n *  selector function built with jQuery selector compile\n * @param {Element} context\n * @param {Array} [results]\n * @param {Array} [seed] A set of elements to match against\n */ function select(selector, context, results, seed) {\n            var i, tokens, token, type, find, compiled = typeof selector === \"function\" && selector, match = !seed && tokenize(selector = compiled.selector || selector);\n            results = results || [];\n            // Try to minimize operations if there is only one selector in the list and no seed\n            // (the latter of which guarantees us context)\n            if (match.length === 1) {\n                // Reduce context if the leading compound selector is an ID\n                tokens = match[0] = match[0].slice(0);\n                if (tokens.length > 2 && (token = tokens[0]).type === \"ID\" && context.nodeType === 9 && documentIsHTML && Expr.relative[tokens[1].type]) {\n                    context = (Expr.find.ID(token.matches[0].replace(runescape, funescape), context) || [])[0];\n                    if (!context) return results;\n                    else if (compiled) context = context.parentNode;\n                    selector = selector.slice(tokens.shift().value.length);\n                }\n                // Fetch a seed set for right-to-left matching\n                i = matchExpr.needsContext.test(selector) ? 0 : tokens.length;\n                while(i--){\n                    token = tokens[i];\n                    // Abort if we hit a combinator\n                    if (Expr.relative[type = token.type]) break;\n                    if (find = Expr.find[type]) // Search, expanding context for leading sibling combinators\n                    {\n                        if (seed = find(token.matches[0].replace(runescape, funescape), rsibling.test(tokens[0].type) && testContext(context.parentNode) || context)) {\n                            // If seed is empty or no tokens remain, we can return early\n                            tokens.splice(i, 1);\n                            selector = seed.length && toSelector(tokens);\n                            if (!selector) {\n                                push.apply(results, seed);\n                                return results;\n                            }\n                            break;\n                        }\n                    }\n                }\n            }\n            // Compile and execute a filtering function if one is not provided\n            // Provide `match` to avoid retokenization if we modified the selector above\n            (compiled || compile(selector, match))(seed, context, !documentIsHTML, results, !context || rsibling.test(selector) && testContext(context.parentNode) || context);\n            return results;\n        }\n        // One-time assignments\n        // Support: Android <=4.0 - 4.1+\n        // Sort stability\n        support.sortStable = expando.split(\"\").sort(sortOrder).join(\"\") === expando;\n        // Initialize against the default document\n        setDocument();\n        // Support: Android <=4.0 - 4.1+\n        // Detached nodes confoundingly follow *each other*\n        support.sortDetached = assert(function(el) {\n            // Should return 1, but returns 4 (following)\n            return el.compareDocumentPosition(document.createElement(\"fieldset\")) & 1;\n        });\n        jQuery.find = find;\n        // Deprecated\n        jQuery.expr[\":\"] = jQuery.expr.pseudos;\n        jQuery.unique = jQuery.uniqueSort;\n        // These have always been private, but they used to be documented as part of\n        // Sizzle so let's maintain them for now for backwards compatibility purposes.\n        find.compile = compile;\n        find.select = select;\n        find.setDocument = setDocument;\n        find.tokenize = tokenize;\n        find.escape = jQuery.escapeSelector;\n        find.getText = jQuery.text;\n        find.isXML = jQuery.isXMLDoc;\n        find.selectors = jQuery.expr;\n        find.support = jQuery.support;\n        find.uniqueSort = jQuery.uniqueSort;\n    /* eslint-enable */ })();\n    var dir = function(elem, dir, until) {\n        var matched = [], truncate = until !== undefined;\n        while((elem = elem[dir]) && elem.nodeType !== 9)if (elem.nodeType === 1) {\n            if (truncate && jQuery(elem).is(until)) break;\n            matched.push(elem);\n        }\n        return matched;\n    };\n    var siblings = function(n, elem) {\n        var matched = [];\n        for(; n; n = n.nextSibling)if (n.nodeType === 1 && n !== elem) matched.push(n);\n        return matched;\n    };\n    var rneedsContext = jQuery.expr.match.needsContext;\n    var rsingleTag = /^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i;\n    // Implement the identical functionality for filter and not\n    function winnow(elements, qualifier, not) {\n        if (isFunction(qualifier)) return jQuery.grep(elements, function(elem, i) {\n            return !!qualifier.call(elem, i, elem) !== not;\n        });\n        // Single element\n        if (qualifier.nodeType) return jQuery.grep(elements, function(elem) {\n            return elem === qualifier !== not;\n        });\n        // Arraylike of elements (jQuery, arguments, Array)\n        if (typeof qualifier !== \"string\") return jQuery.grep(elements, function(elem) {\n            return indexOf.call(qualifier, elem) > -1 !== not;\n        });\n        // Filtered directly for both simple and complex selectors\n        return jQuery.filter(qualifier, elements, not);\n    }\n    jQuery.filter = function(expr, elems, not) {\n        var elem = elems[0];\n        if (not) expr = \":not(\" + expr + \")\";\n        if (elems.length === 1 && elem.nodeType === 1) return jQuery.find.matchesSelector(elem, expr) ? [\n            elem\n        ] : [];\n        return jQuery.find.matches(expr, jQuery.grep(elems, function(elem) {\n            return elem.nodeType === 1;\n        }));\n    };\n    jQuery.fn.extend({\n        find: function(selector) {\n            var i, ret, len = this.length, self = this;\n            if (typeof selector !== \"string\") return this.pushStack(jQuery(selector).filter(function() {\n                for(i = 0; i < len; i++){\n                    if (jQuery.contains(self[i], this)) return true;\n                }\n            }));\n            ret = this.pushStack([]);\n            for(i = 0; i < len; i++)jQuery.find(selector, self[i], ret);\n            return len > 1 ? jQuery.uniqueSort(ret) : ret;\n        },\n        filter: function(selector) {\n            return this.pushStack(winnow(this, selector || [], false));\n        },\n        not: function(selector) {\n            return this.pushStack(winnow(this, selector || [], true));\n        },\n        is: function(selector) {\n            return !!winnow(this, // If this is a positional/relative selector, check membership in the returned set\n            // so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n            typeof selector === \"string\" && rneedsContext.test(selector) ? jQuery(selector) : selector || [], false).length;\n        }\n    });\n    // Initialize a jQuery object\n    // A central reference to the root jQuery(document)\n    var rootjQuery, // A simple way to check for HTML strings\n    // Prioritize #id over <tag> to avoid XSS via location.hash (trac-9521)\n    // Strict HTML recognition (trac-11290: must start with <)\n    // Shortcut simple #id case for speed\n    rquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/, init = jQuery.fn.init = function(selector, context, root) {\n        var match, elem;\n        // HANDLE: $(\"\"), $(null), $(undefined), $(false)\n        if (!selector) return this;\n        // Method init() accepts an alternate rootjQuery\n        // so migrate can support jQuery.sub (gh-2101)\n        root = root || rootjQuery;\n        // Handle HTML strings\n        if (typeof selector === \"string\") {\n            if (selector[0] === \"<\" && selector[selector.length - 1] === \">\" && selector.length >= 3) // Assume that strings that start and end with <> are HTML and skip the regex check\n            match = [\n                null,\n                selector,\n                null\n            ];\n            else match = rquickExpr.exec(selector);\n            // Match html or make sure no context is specified for #id\n            if (match && (match[1] || !context)) {\n                // HANDLE: $(html) -> $(array)\n                if (match[1]) {\n                    context = context instanceof jQuery ? context[0] : context;\n                    // Option to run scripts is true for back-compat\n                    // Intentionally let the error be thrown if parseHTML is not present\n                    jQuery.merge(this, jQuery.parseHTML(match[1], context && context.nodeType ? context.ownerDocument || context : document, true));\n                    // HANDLE: $(html, props)\n                    if (rsingleTag.test(match[1]) && jQuery.isPlainObject(context)) {\n                        for(match in context)// Properties of context are called as methods if possible\n                        if (isFunction(this[match])) this[match](context[match]);\n                        else this.attr(match, context[match]);\n                    }\n                    return this;\n                // HANDLE: $(#id)\n                } else {\n                    elem = document.getElementById(match[2]);\n                    if (elem) {\n                        // Inject the element directly into the jQuery object\n                        this[0] = elem;\n                        this.length = 1;\n                    }\n                    return this;\n                }\n            } else if (!context || context.jquery) return (context || root).find(selector);\n            else return this.constructor(context).find(selector);\n        // HANDLE: $(DOMElement)\n        } else if (selector.nodeType) {\n            this[0] = selector;\n            this.length = 1;\n            return this;\n        // HANDLE: $(function)\n        // Shortcut for document ready\n        } else if (isFunction(selector)) return root.ready !== undefined ? root.ready(selector) : // Execute immediately if ready is not present\n        selector(jQuery);\n        return jQuery.makeArray(selector, this);\n    };\n    // Give the init function the jQuery prototype for later instantiation\n    init.prototype = jQuery.fn;\n    // Initialize central reference\n    rootjQuery = jQuery(document);\n    var rparentsprev = /^(?:parents|prev(?:Until|All))/, // Methods guaranteed to produce a unique set when starting from a unique set\n    guaranteedUnique = {\n        children: true,\n        contents: true,\n        next: true,\n        prev: true\n    };\n    jQuery.fn.extend({\n        has: function(target) {\n            var targets = jQuery(target, this), l = targets.length;\n            return this.filter(function() {\n                var i = 0;\n                for(; i < l; i++){\n                    if (jQuery.contains(this, targets[i])) return true;\n                }\n            });\n        },\n        closest: function(selectors, context) {\n            var cur, i = 0, l = this.length, matched = [], targets = typeof selectors !== \"string\" && jQuery(selectors);\n            // Positional selectors never match, since there's no _selection_ context\n            if (!rneedsContext.test(selectors)) for(; i < l; i++){\n                for(cur = this[i]; cur && cur !== context; cur = cur.parentNode)// Always skip document fragments\n                if (cur.nodeType < 11 && (targets ? targets.index(cur) > -1 : // Don't pass non-elements to jQuery#find\n                cur.nodeType === 1 && jQuery.find.matchesSelector(cur, selectors))) {\n                    matched.push(cur);\n                    break;\n                }\n            }\n            return this.pushStack(matched.length > 1 ? jQuery.uniqueSort(matched) : matched);\n        },\n        // Determine the position of an element within the set\n        index: function(elem) {\n            // No argument, return index in parent\n            if (!elem) return this[0] && this[0].parentNode ? this.first().prevAll().length : -1;\n            // Index in selector\n            if (typeof elem === \"string\") return indexOf.call(jQuery(elem), this[0]);\n            // Locate the position of the desired element\n            return indexOf.call(this, // If it receives a jQuery object, the first element is used\n            elem.jquery ? elem[0] : elem);\n        },\n        add: function(selector, context) {\n            return this.pushStack(jQuery.uniqueSort(jQuery.merge(this.get(), jQuery(selector, context))));\n        },\n        addBack: function(selector) {\n            return this.add(selector == null ? this.prevObject : this.prevObject.filter(selector));\n        }\n    });\n    function sibling(cur, dir) {\n        while((cur = cur[dir]) && cur.nodeType !== 1);\n        return cur;\n    }\n    jQuery.each({\n        parent: function(elem) {\n            var parent = elem.parentNode;\n            return parent && parent.nodeType !== 11 ? parent : null;\n        },\n        parents: function(elem) {\n            return dir(elem, \"parentNode\");\n        },\n        parentsUntil: function(elem, _i, until) {\n            return dir(elem, \"parentNode\", until);\n        },\n        next: function(elem) {\n            return sibling(elem, \"nextSibling\");\n        },\n        prev: function(elem) {\n            return sibling(elem, \"previousSibling\");\n        },\n        nextAll: function(elem) {\n            return dir(elem, \"nextSibling\");\n        },\n        prevAll: function(elem) {\n            return dir(elem, \"previousSibling\");\n        },\n        nextUntil: function(elem, _i, until) {\n            return dir(elem, \"nextSibling\", until);\n        },\n        prevUntil: function(elem, _i, until) {\n            return dir(elem, \"previousSibling\", until);\n        },\n        siblings: function(elem) {\n            return siblings((elem.parentNode || {}).firstChild, elem);\n        },\n        children: function(elem) {\n            return siblings(elem.firstChild);\n        },\n        contents: function(elem) {\n            if (elem.contentDocument != null && // Support: IE 11+\n            // <object> elements with no `data` attribute has an object\n            // `contentDocument` with a `null` prototype.\n            getProto(elem.contentDocument)) return elem.contentDocument;\n            // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n            // Treat the template element as a regular one in browsers that\n            // don't support it.\n            if (nodeName(elem, \"template\")) elem = elem.content || elem;\n            return jQuery.merge([], elem.childNodes);\n        }\n    }, function(name, fn) {\n        jQuery.fn[name] = function(until, selector) {\n            var matched = jQuery.map(this, fn, until);\n            if (name.slice(-5) !== \"Until\") selector = until;\n            if (selector && typeof selector === \"string\") matched = jQuery.filter(selector, matched);\n            if (this.length > 1) {\n                // Remove duplicates\n                if (!guaranteedUnique[name]) jQuery.uniqueSort(matched);\n                // Reverse order for parents* and prev-derivatives\n                if (rparentsprev.test(name)) matched.reverse();\n            }\n            return this.pushStack(matched);\n        };\n    });\n    var rnothtmlwhite = /[^\\x20\\t\\r\\n\\f]+/g;\n    // Convert String-formatted options into Object-formatted ones\n    function createOptions(options) {\n        var object = {};\n        jQuery.each(options.match(rnothtmlwhite) || [], function(_, flag) {\n            object[flag] = true;\n        });\n        return object;\n    }\n    /*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */ jQuery.Callbacks = function(options) {\n        // Convert options from String-formatted to Object-formatted if needed\n        // (we check in cache first)\n        options = typeof options === \"string\" ? createOptions(options) : jQuery.extend({}, options);\n        var firing, // Last fire value for non-forgettable lists\n        memory, // Flag to know if list was already fired\n        fired, // Flag to prevent firing\n        locked, // Actual callback list\n        list = [], // Queue of execution data for repeatable lists\n        queue = [], // Index of currently firing callback (modified by add/remove as needed)\n        firingIndex = -1, // Fire callbacks\n        fire = function() {\n            // Enforce single-firing\n            locked = locked || options.once;\n            // Execute callbacks for all pending executions,\n            // respecting firingIndex overrides and runtime changes\n            fired = firing = true;\n            for(; queue.length; firingIndex = -1){\n                memory = queue.shift();\n                while(++firingIndex < list.length)// Run callback and check for early termination\n                if (list[firingIndex].apply(memory[0], memory[1]) === false && options.stopOnFalse) {\n                    // Jump to end and forget the data so .add doesn't re-fire\n                    firingIndex = list.length;\n                    memory = false;\n                }\n            }\n            // Forget the data if we're done with it\n            if (!options.memory) memory = false;\n            firing = false;\n            // Clean up if we're done firing for good\n            if (locked) {\n                // Keep an empty list if we have data for future add calls\n                if (memory) list = [];\n                else list = \"\";\n            }\n        }, // Actual Callbacks object\n        self = {\n            // Add a callback or a collection of callbacks to the list\n            add: function() {\n                if (list) {\n                    // If we have memory from a past run, we should fire after adding\n                    if (memory && !firing) {\n                        firingIndex = list.length - 1;\n                        queue.push(memory);\n                    }\n                    (function add(args) {\n                        jQuery.each(args, function(_, arg) {\n                            if (isFunction(arg)) {\n                                if (!options.unique || !self.has(arg)) list.push(arg);\n                            } else if (arg && arg.length && toType(arg) !== \"string\") // Inspect recursively\n                            add(arg);\n                        });\n                    })(arguments);\n                    if (memory && !firing) fire();\n                }\n                return this;\n            },\n            // Remove a callback from the list\n            remove: function() {\n                jQuery.each(arguments, function(_, arg) {\n                    var index;\n                    while((index = jQuery.inArray(arg, list, index)) > -1){\n                        list.splice(index, 1);\n                        // Handle firing indexes\n                        if (index <= firingIndex) firingIndex--;\n                    }\n                });\n                return this;\n            },\n            // Check if a given callback is in the list.\n            // If no argument is given, return whether or not list has callbacks attached.\n            has: function(fn) {\n                return fn ? jQuery.inArray(fn, list) > -1 : list.length > 0;\n            },\n            // Remove all callbacks from the list\n            empty: function() {\n                if (list) list = [];\n                return this;\n            },\n            // Disable .fire and .add\n            // Abort any current/pending executions\n            // Clear all callbacks and values\n            disable: function() {\n                locked = queue = [];\n                list = memory = \"\";\n                return this;\n            },\n            disabled: function() {\n                return !list;\n            },\n            // Disable .fire\n            // Also disable .add unless we have memory (since it would have no effect)\n            // Abort any pending executions\n            lock: function() {\n                locked = queue = [];\n                if (!memory && !firing) list = memory = \"\";\n                return this;\n            },\n            locked: function() {\n                return !!locked;\n            },\n            // Call all callbacks with the given context and arguments\n            fireWith: function(context, args) {\n                if (!locked) {\n                    args = args || [];\n                    args = [\n                        context,\n                        args.slice ? args.slice() : args\n                    ];\n                    queue.push(args);\n                    if (!firing) fire();\n                }\n                return this;\n            },\n            // Call all the callbacks with the given arguments\n            fire: function() {\n                self.fireWith(this, arguments);\n                return this;\n            },\n            // To know if the callbacks have already been called at least once\n            fired: function() {\n                return !!fired;\n            }\n        };\n        return self;\n    };\n    function Identity(v) {\n        return v;\n    }\n    function Thrower(ex) {\n        throw ex;\n    }\n    function adoptValue(value, resolve, reject, noValue) {\n        var method;\n        try {\n            // Check for promise aspect first to privilege synchronous behavior\n            if (value && isFunction(method = value.promise)) method.call(value).done(resolve).fail(reject);\n            else if (value && isFunction(method = value.then)) method.call(value, resolve, reject);\n            else // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n            // * false: [ value ].slice( 0 ) => resolve( value )\n            // * true: [ value ].slice( 1 ) => resolve()\n            resolve.apply(undefined, [\n                value\n            ].slice(noValue));\n        // For Promises/A+, convert exceptions into rejections\n        // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n        // Deferred#then to conditionally suppress rejection.\n        } catch (value) {\n            // Support: Android 4.0 only\n            // Strict mode functions invoked without .call/.apply get global-object context\n            reject.apply(undefined, [\n                value\n            ]);\n        }\n    }\n    jQuery.extend({\n        Deferred: function(func) {\n            var tuples = [\n                // action, add listener, callbacks,\n                // ... .then handlers, argument index, [final state]\n                [\n                    \"notify\",\n                    \"progress\",\n                    jQuery.Callbacks(\"memory\"),\n                    jQuery.Callbacks(\"memory\"),\n                    2\n                ],\n                [\n                    \"resolve\",\n                    \"done\",\n                    jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"),\n                    0,\n                    \"resolved\"\n                ],\n                [\n                    \"reject\",\n                    \"fail\",\n                    jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"),\n                    1,\n                    \"rejected\"\n                ]\n            ], state = \"pending\", promise = {\n                state: function() {\n                    return state;\n                },\n                always: function() {\n                    deferred.done(arguments).fail(arguments);\n                    return this;\n                },\n                \"catch\": function(fn) {\n                    return promise.then(null, fn);\n                },\n                // Keep pipe for back-compat\n                pipe: function() {\n                    var fns = arguments;\n                    return jQuery.Deferred(function(newDefer) {\n                        jQuery.each(tuples, function(_i, tuple) {\n                            // Map tuples (progress, done, fail) to arguments (done, fail, progress)\n                            var fn = isFunction(fns[tuple[4]]) && fns[tuple[4]];\n                            // deferred.progress(function() { bind to newDefer or newDefer.notify })\n                            // deferred.done(function() { bind to newDefer or newDefer.resolve })\n                            // deferred.fail(function() { bind to newDefer or newDefer.reject })\n                            deferred[tuple[1]](function() {\n                                var returned = fn && fn.apply(this, arguments);\n                                if (returned && isFunction(returned.promise)) returned.promise().progress(newDefer.notify).done(newDefer.resolve).fail(newDefer.reject);\n                                else newDefer[tuple[0] + \"With\"](this, fn ? [\n                                    returned\n                                ] : arguments);\n                            });\n                        });\n                        fns = null;\n                    }).promise();\n                },\n                then: function(onFulfilled, onRejected, onProgress) {\n                    var maxDepth = 0;\n                    function resolve(depth, deferred, handler, special) {\n                        return function() {\n                            var that = this, args = arguments, mightThrow = function() {\n                                var returned, then;\n                                // Support: Promises/A+ section 2.3.3.3.3\n                                // https://promisesaplus.com/#point-59\n                                // Ignore double-resolution attempts\n                                if (depth < maxDepth) return;\n                                returned = handler.apply(that, args);\n                                // Support: Promises/A+ section 2.3.1\n                                // https://promisesaplus.com/#point-48\n                                if (returned === deferred.promise()) throw new TypeError(\"Thenable self-resolution\");\n                                // Support: Promises/A+ sections 2.3.3.1, 3.5\n                                // https://promisesaplus.com/#point-54\n                                // https://promisesaplus.com/#point-75\n                                // Retrieve `then` only once\n                                then = returned && // Support: Promises/A+ section 2.3.4\n                                // https://promisesaplus.com/#point-64\n                                // Only check objects and functions for thenability\n                                (typeof returned === \"object\" || typeof returned === \"function\") && returned.then;\n                                // Handle a returned thenable\n                                if (isFunction(then)) {\n                                    // Special processors (notify) just wait for resolution\n                                    if (special) then.call(returned, resolve(maxDepth, deferred, Identity, special), resolve(maxDepth, deferred, Thrower, special));\n                                    else {\n                                        // ...and disregard older resolution values\n                                        maxDepth++;\n                                        then.call(returned, resolve(maxDepth, deferred, Identity, special), resolve(maxDepth, deferred, Thrower, special), resolve(maxDepth, deferred, Identity, deferred.notifyWith));\n                                    }\n                                } else {\n                                    // Only substitute handlers pass on context\n                                    // and multiple values (non-spec behavior)\n                                    if (handler !== Identity) {\n                                        that = undefined;\n                                        args = [\n                                            returned\n                                        ];\n                                    }\n                                    // Process the value(s)\n                                    // Default process is resolve\n                                    (special || deferred.resolveWith)(that, args);\n                                }\n                            }, // Only normal processors (resolve) catch and reject exceptions\n                            process = special ? mightThrow : function() {\n                                try {\n                                    mightThrow();\n                                } catch (e) {\n                                    if (jQuery.Deferred.exceptionHook) jQuery.Deferred.exceptionHook(e, process.error);\n                                    // Support: Promises/A+ section 2.3.3.3.4.1\n                                    // https://promisesaplus.com/#point-61\n                                    // Ignore post-resolution exceptions\n                                    if (depth + 1 >= maxDepth) {\n                                        // Only substitute handlers pass on context\n                                        // and multiple values (non-spec behavior)\n                                        if (handler !== Thrower) {\n                                            that = undefined;\n                                            args = [\n                                                e\n                                            ];\n                                        }\n                                        deferred.rejectWith(that, args);\n                                    }\n                                }\n                            };\n                            // Support: Promises/A+ section 2.3.3.3.1\n                            // https://promisesaplus.com/#point-57\n                            // Re-resolve promises immediately to dodge false rejection from\n                            // subsequent errors\n                            if (depth) process();\n                            else {\n                                // Call an optional hook to record the error, in case of exception\n                                // since it's otherwise lost when execution goes async\n                                if (jQuery.Deferred.getErrorHook) process.error = jQuery.Deferred.getErrorHook();\n                                else if (jQuery.Deferred.getStackHook) process.error = jQuery.Deferred.getStackHook();\n                                window1.setTimeout(process);\n                            }\n                        };\n                    }\n                    return jQuery.Deferred(function(newDefer) {\n                        // progress_handlers.add( ... )\n                        tuples[0][3].add(resolve(0, newDefer, isFunction(onProgress) ? onProgress : Identity, newDefer.notifyWith));\n                        // fulfilled_handlers.add( ... )\n                        tuples[1][3].add(resolve(0, newDefer, isFunction(onFulfilled) ? onFulfilled : Identity));\n                        // rejected_handlers.add( ... )\n                        tuples[2][3].add(resolve(0, newDefer, isFunction(onRejected) ? onRejected : Thrower));\n                    }).promise();\n                },\n                // Get a promise for this deferred\n                // If obj is provided, the promise aspect is added to the object\n                promise: function(obj) {\n                    return obj != null ? jQuery.extend(obj, promise) : promise;\n                }\n            }, deferred = {};\n            // Add list-specific methods\n            jQuery.each(tuples, function(i, tuple) {\n                var list = tuple[2], stateString = tuple[5];\n                // promise.progress = list.add\n                // promise.done = list.add\n                // promise.fail = list.add\n                promise[tuple[1]] = list.add;\n                // Handle state\n                if (stateString) list.add(function() {\n                    // state = \"resolved\" (i.e., fulfilled)\n                    // state = \"rejected\"\n                    state = stateString;\n                }, // rejected_callbacks.disable\n                // fulfilled_callbacks.disable\n                tuples[3 - i][2].disable, // rejected_handlers.disable\n                // fulfilled_handlers.disable\n                tuples[3 - i][3].disable, // progress_callbacks.lock\n                tuples[0][2].lock, // progress_handlers.lock\n                tuples[0][3].lock);\n                // progress_handlers.fire\n                // fulfilled_handlers.fire\n                // rejected_handlers.fire\n                list.add(tuple[3].fire);\n                // deferred.notify = function() { deferred.notifyWith(...) }\n                // deferred.resolve = function() { deferred.resolveWith(...) }\n                // deferred.reject = function() { deferred.rejectWith(...) }\n                deferred[tuple[0]] = function() {\n                    deferred[tuple[0] + \"With\"](this === deferred ? undefined : this, arguments);\n                    return this;\n                };\n                // deferred.notifyWith = list.fireWith\n                // deferred.resolveWith = list.fireWith\n                // deferred.rejectWith = list.fireWith\n                deferred[tuple[0] + \"With\"] = list.fireWith;\n            });\n            // Make the deferred a promise\n            promise.promise(deferred);\n            // Call given func if any\n            if (func) func.call(deferred, deferred);\n            // All done!\n            return deferred;\n        },\n        // Deferred helper\n        when: function(singleValue) {\n            var // count of uncompleted subordinates\n            remaining = arguments.length, // count of unprocessed arguments\n            i = remaining, // subordinate fulfillment data\n            resolveContexts = Array(i), resolveValues = slice.call(arguments), // the primary Deferred\n            primary = jQuery.Deferred(), // subordinate callback factory\n            updateFunc = function(i) {\n                return function(value) {\n                    resolveContexts[i] = this;\n                    resolveValues[i] = arguments.length > 1 ? slice.call(arguments) : value;\n                    if (!--remaining) primary.resolveWith(resolveContexts, resolveValues);\n                };\n            };\n            // Single- and empty arguments are adopted like Promise.resolve\n            if (remaining <= 1) {\n                adoptValue(singleValue, primary.done(updateFunc(i)).resolve, primary.reject, !remaining);\n                // Use .then() to unwrap secondary thenables (cf. gh-3000)\n                if (primary.state() === \"pending\" || isFunction(resolveValues[i] && resolveValues[i].then)) return primary.then();\n            }\n            // Multiple arguments are aggregated like Promise.all array elements\n            while(i--)adoptValue(resolveValues[i], updateFunc(i), primary.reject);\n            return primary.promise();\n        }\n    });\n    // These usually indicate a programmer mistake during development,\n    // warn about them ASAP rather than swallowing them by default.\n    var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n    // If `jQuery.Deferred.getErrorHook` is defined, `asyncError` is an error\n    // captured before the async barrier to get the original error cause\n    // which may otherwise be hidden.\n    jQuery.Deferred.exceptionHook = function(error, asyncError) {\n        // Support: IE 8 - 9 only\n        // Console exists when dev tools are open, which can happen at any time\n        if (window1.console && window1.console.warn && error && rerrorNames.test(error.name)) window1.console.warn(\"jQuery.Deferred exception: \" + error.message, error.stack, asyncError);\n    };\n    jQuery.readyException = function(error) {\n        window1.setTimeout(function() {\n            throw error;\n        });\n    };\n    // The deferred used on DOM ready\n    var readyList = jQuery.Deferred();\n    jQuery.fn.ready = function(fn) {\n        readyList.then(fn)// Wrap jQuery.readyException in a function so that the lookup\n        // happens at the time of error handling instead of callback\n        // registration.\n        .catch(function(error) {\n            jQuery.readyException(error);\n        });\n        return this;\n    };\n    jQuery.extend({\n        // Is the DOM ready to be used? Set to true once it occurs.\n        isReady: false,\n        // A counter to track how many items to wait for before\n        // the ready event fires. See trac-6781\n        readyWait: 1,\n        // Handle when the DOM is ready\n        ready: function(wait) {\n            // Abort if there are pending holds or we're already ready\n            if (wait === true ? --jQuery.readyWait : jQuery.isReady) return;\n            // Remember that the DOM is ready\n            jQuery.isReady = true;\n            // If a normal DOM Ready event fired, decrement, and wait if need be\n            if (wait !== true && --jQuery.readyWait > 0) return;\n            // If there are functions bound, to execute\n            readyList.resolveWith(document, [\n                jQuery\n            ]);\n        }\n    });\n    jQuery.ready.then = readyList.then;\n    // The ready event handler and self cleanup method\n    function completed() {\n        document.removeEventListener(\"DOMContentLoaded\", completed);\n        window1.removeEventListener(\"load\", completed);\n        jQuery.ready();\n    }\n    // Catch cases where $(document).ready() is called\n    // after the browser event has already occurred.\n    // Support: IE <=9 - 10 only\n    // Older IE sometimes signals \"interactive\" too soon\n    if (document.readyState === \"complete\" || document.readyState !== \"loading\" && !document.documentElement.doScroll) // Handle it asynchronously to allow scripts the opportunity to delay ready\n    window1.setTimeout(jQuery.ready);\n    else {\n        // Use the handy event callback\n        document.addEventListener(\"DOMContentLoaded\", completed);\n        // A fallback to window.onload, that will always work\n        window1.addEventListener(\"load\", completed);\n    }\n    // Multifunctional method to get and set values of a collection\n    // The value/s can optionally be executed if it's a function\n    var access = function(elems, fn, key, value, chainable, emptyGet, raw) {\n        var i = 0, len = elems.length, bulk = key == null;\n        // Sets many values\n        if (toType(key) === \"object\") {\n            chainable = true;\n            for(i in key)access(elems, fn, i, key[i], true, emptyGet, raw);\n        // Sets one value\n        } else if (value !== undefined) {\n            chainable = true;\n            if (!isFunction(value)) raw = true;\n            if (bulk) {\n                // Bulk operations run against the entire set\n                if (raw) {\n                    fn.call(elems, value);\n                    fn = null;\n                // ...except when executing function values\n                } else {\n                    bulk = fn;\n                    fn = function(elem, _key, value) {\n                        return bulk.call(jQuery(elem), value);\n                    };\n                }\n            }\n            if (fn) for(; i < len; i++)fn(elems[i], key, raw ? value : value.call(elems[i], i, fn(elems[i], key)));\n        }\n        if (chainable) return elems;\n        // Gets\n        if (bulk) return fn.call(elems);\n        return len ? fn(elems[0], key) : emptyGet;\n    };\n    // Matches dashed string for camelizing\n    var rmsPrefix = /^-ms-/, rdashAlpha = /-([a-z])/g;\n    // Used by camelCase as callback to replace()\n    function fcamelCase(_all, letter) {\n        return letter.toUpperCase();\n    }\n    // Convert dashed to camelCase; used by the css and data modules\n    // Support: IE <=9 - 11, Edge 12 - 15\n    // Microsoft forgot to hump their vendor prefix (trac-9572)\n    function camelCase(string) {\n        return string.replace(rmsPrefix, \"ms-\").replace(rdashAlpha, fcamelCase);\n    }\n    var acceptData = function(owner) {\n        // Accepts only:\n        //  - Node\n        //    - Node.ELEMENT_NODE\n        //    - Node.DOCUMENT_NODE\n        //  - Object\n        //    - Any\n        return owner.nodeType === 1 || owner.nodeType === 9 || !+owner.nodeType;\n    };\n    function Data() {\n        this.expando = jQuery.expando + Data.uid++;\n    }\n    Data.uid = 1;\n    Data.prototype = {\n        cache: function(owner) {\n            // Check if the owner object already has a cache\n            var value = owner[this.expando];\n            // If not, create one\n            if (!value) {\n                value = {};\n                // We can accept data for non-element nodes in modern browsers,\n                // but we should not, see trac-8335.\n                // Always return an empty object.\n                if (acceptData(owner)) {\n                    // If it is a node unlikely to be stringify-ed or looped over\n                    // use plain assignment\n                    if (owner.nodeType) owner[this.expando] = value;\n                    else Object.defineProperty(owner, this.expando, {\n                        value: value,\n                        configurable: true\n                    });\n                }\n            }\n            return value;\n        },\n        set: function(owner, data, value) {\n            var prop, cache = this.cache(owner);\n            // Handle: [ owner, key, value ] args\n            // Always use camelCase key (gh-2257)\n            if (typeof data === \"string\") cache[camelCase(data)] = value;\n            else // Copy the properties one-by-one to the cache object\n            for(prop in data)cache[camelCase(prop)] = data[prop];\n            return cache;\n        },\n        get: function(owner, key) {\n            return key === undefined ? this.cache(owner) : // Always use camelCase key (gh-2257)\n            owner[this.expando] && owner[this.expando][camelCase(key)];\n        },\n        access: function(owner, key, value) {\n            // In cases where either:\n            //\n            //   1. No key was specified\n            //   2. A string key was specified, but no value provided\n            //\n            // Take the \"read\" path and allow the get method to determine\n            // which value to return, respectively either:\n            //\n            //   1. The entire cache object\n            //   2. The data stored at the key\n            //\n            if (key === undefined || key && typeof key === \"string\" && value === undefined) return this.get(owner, key);\n            // When the key is not a string, or both a key and value\n            // are specified, set or extend (existing objects) with either:\n            //\n            //   1. An object of properties\n            //   2. A key and value\n            //\n            this.set(owner, key, value);\n            // Since the \"set\" path can have two possible entry points\n            // return the expected data based on which path was taken[*]\n            return value !== undefined ? value : key;\n        },\n        remove: function(owner, key) {\n            var i, cache = owner[this.expando];\n            if (cache === undefined) return;\n            if (key !== undefined) {\n                // Support array or space separated string of keys\n                if (Array.isArray(key)) // If key is an array of keys...\n                // We always set camelCase keys, so remove that.\n                key = key.map(camelCase);\n                else {\n                    key = camelCase(key);\n                    // If a key with the spaces exists, use it.\n                    // Otherwise, create an array by matching non-whitespace\n                    key = key in cache ? [\n                        key\n                    ] : key.match(rnothtmlwhite) || [];\n                }\n                i = key.length;\n                while(i--)delete cache[key[i]];\n            }\n            // Remove the expando if there's no more data\n            if (key === undefined || jQuery.isEmptyObject(cache)) {\n                // Support: Chrome <=35 - 45\n                // Webkit & Blink performance suffers when deleting properties\n                // from DOM nodes, so set to undefined instead\n                // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n                if (owner.nodeType) owner[this.expando] = undefined;\n                else delete owner[this.expando];\n            }\n        },\n        hasData: function(owner) {\n            var cache = owner[this.expando];\n            return cache !== undefined && !jQuery.isEmptyObject(cache);\n        }\n    };\n    var dataPriv = new Data();\n    var dataUser = new Data();\n    //\tImplementation Summary\n    //\n    //\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n    //\t2. Improve the module's maintainability by reducing the storage\n    //\t\tpaths to a single mechanism.\n    //\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n    //\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n    //\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n    //\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n    var rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/, rmultiDash = /[A-Z]/g;\n    function getData(data) {\n        if (data === \"true\") return true;\n        if (data === \"false\") return false;\n        if (data === \"null\") return null;\n        // Only convert to a number if it doesn't change the string\n        if (data === +data + \"\") return +data;\n        if (rbrace.test(data)) return JSON.parse(data);\n        return data;\n    }\n    function dataAttr(elem, key, data) {\n        var name;\n        // If nothing was found internally, try to fetch any\n        // data from the HTML5 data-* attribute\n        if (data === undefined && elem.nodeType === 1) {\n            name = \"data-\" + key.replace(rmultiDash, \"-$&\").toLowerCase();\n            data = elem.getAttribute(name);\n            if (typeof data === \"string\") {\n                try {\n                    data = getData(data);\n                } catch (e) {}\n                // Make sure we set the data so it isn't changed later\n                dataUser.set(elem, key, data);\n            } else data = undefined;\n        }\n        return data;\n    }\n    jQuery.extend({\n        hasData: function(elem) {\n            return dataUser.hasData(elem) || dataPriv.hasData(elem);\n        },\n        data: function(elem, name, data) {\n            return dataUser.access(elem, name, data);\n        },\n        removeData: function(elem, name) {\n            dataUser.remove(elem, name);\n        },\n        // TODO: Now that all calls to _data and _removeData have been replaced\n        // with direct calls to dataPriv methods, these can be deprecated.\n        _data: function(elem, name, data) {\n            return dataPriv.access(elem, name, data);\n        },\n        _removeData: function(elem, name) {\n            dataPriv.remove(elem, name);\n        }\n    });\n    jQuery.fn.extend({\n        data: function(key, value) {\n            var i, name, data, elem = this[0], attrs = elem && elem.attributes;\n            // Gets all values\n            if (key === undefined) {\n                if (this.length) {\n                    data = dataUser.get(elem);\n                    if (elem.nodeType === 1 && !dataPriv.get(elem, \"hasDataAttrs\")) {\n                        i = attrs.length;\n                        while(i--)// Support: IE 11 only\n                        // The attrs elements can be null (trac-14894)\n                        if (attrs[i]) {\n                            name = attrs[i].name;\n                            if (name.indexOf(\"data-\") === 0) {\n                                name = camelCase(name.slice(5));\n                                dataAttr(elem, name, data[name]);\n                            }\n                        }\n                        dataPriv.set(elem, \"hasDataAttrs\", true);\n                    }\n                }\n                return data;\n            }\n            // Sets multiple values\n            if (typeof key === \"object\") return this.each(function() {\n                dataUser.set(this, key);\n            });\n            return access(this, function(value) {\n                var data;\n                // The calling jQuery object (element matches) is not empty\n                // (and therefore has an element appears at this[ 0 ]) and the\n                // `value` parameter was not undefined. An empty jQuery object\n                // will result in `undefined` for elem = this[ 0 ] which will\n                // throw an exception if an attempt to read a data cache is made.\n                if (elem && value === undefined) {\n                    // Attempt to get data from the cache\n                    // The key will always be camelCased in Data\n                    data = dataUser.get(elem, key);\n                    if (data !== undefined) return data;\n                    // Attempt to \"discover\" the data in\n                    // HTML5 custom data-* attrs\n                    data = dataAttr(elem, key);\n                    if (data !== undefined) return data;\n                    // We tried really hard, but the data doesn't exist.\n                    return;\n                }\n                // Set the data...\n                this.each(function() {\n                    // We always store the camelCased key\n                    dataUser.set(this, key, value);\n                });\n            }, null, value, arguments.length > 1, null, true);\n        },\n        removeData: function(key) {\n            return this.each(function() {\n                dataUser.remove(this, key);\n            });\n        }\n    });\n    jQuery.extend({\n        queue: function(elem, type, data) {\n            var queue;\n            if (elem) {\n                type = (type || \"fx\") + \"queue\";\n                queue = dataPriv.get(elem, type);\n                // Speed up dequeue by getting out quickly if this is just a lookup\n                if (data) {\n                    if (!queue || Array.isArray(data)) queue = dataPriv.access(elem, type, jQuery.makeArray(data));\n                    else queue.push(data);\n                }\n                return queue || [];\n            }\n        },\n        dequeue: function(elem, type) {\n            type = type || \"fx\";\n            var queue = jQuery.queue(elem, type), startLength = queue.length, fn = queue.shift(), hooks = jQuery._queueHooks(elem, type), next = function() {\n                jQuery.dequeue(elem, type);\n            };\n            // If the fx queue is dequeued, always remove the progress sentinel\n            if (fn === \"inprogress\") {\n                fn = queue.shift();\n                startLength--;\n            }\n            if (fn) {\n                // Add a progress sentinel to prevent the fx queue from being\n                // automatically dequeued\n                if (type === \"fx\") queue.unshift(\"inprogress\");\n                // Clear up the last queue stop function\n                delete hooks.stop;\n                fn.call(elem, next, hooks);\n            }\n            if (!startLength && hooks) hooks.empty.fire();\n        },\n        // Not public - generate a queueHooks object, or return the current one\n        _queueHooks: function(elem, type) {\n            var key = type + \"queueHooks\";\n            return dataPriv.get(elem, key) || dataPriv.access(elem, key, {\n                empty: jQuery.Callbacks(\"once memory\").add(function() {\n                    dataPriv.remove(elem, [\n                        type + \"queue\",\n                        key\n                    ]);\n                })\n            });\n        }\n    });\n    jQuery.fn.extend({\n        queue: function(type, data) {\n            var setter = 2;\n            if (typeof type !== \"string\") {\n                data = type;\n                type = \"fx\";\n                setter--;\n            }\n            if (arguments.length < setter) return jQuery.queue(this[0], type);\n            return data === undefined ? this : this.each(function() {\n                var queue = jQuery.queue(this, type, data);\n                // Ensure a hooks for this queue\n                jQuery._queueHooks(this, type);\n                if (type === \"fx\" && queue[0] !== \"inprogress\") jQuery.dequeue(this, type);\n            });\n        },\n        dequeue: function(type) {\n            return this.each(function() {\n                jQuery.dequeue(this, type);\n            });\n        },\n        clearQueue: function(type) {\n            return this.queue(type || \"fx\", []);\n        },\n        // Get a promise resolved when queues of a certain type\n        // are emptied (fx is the type by default)\n        promise: function(type, obj) {\n            var tmp, count = 1, defer = jQuery.Deferred(), elements = this, i = this.length, resolve = function() {\n                if (!--count) defer.resolveWith(elements, [\n                    elements\n                ]);\n            };\n            if (typeof type !== \"string\") {\n                obj = type;\n                type = undefined;\n            }\n            type = type || \"fx\";\n            while(i--){\n                tmp = dataPriv.get(elements[i], type + \"queueHooks\");\n                if (tmp && tmp.empty) {\n                    count++;\n                    tmp.empty.add(resolve);\n                }\n            }\n            resolve();\n            return defer.promise(obj);\n        }\n    });\n    var pnum = /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/.source;\n    var rcssNum = new RegExp(\"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\");\n    var cssExpand = [\n        \"Top\",\n        \"Right\",\n        \"Bottom\",\n        \"Left\"\n    ];\n    var documentElement = document.documentElement;\n    var isAttached = function(elem) {\n        return jQuery.contains(elem.ownerDocument, elem);\n    }, composed = {\n        composed: true\n    };\n    // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only\n    // Check attachment across shadow DOM boundaries when possible (gh-3504)\n    // Support: iOS 10.0-10.2 only\n    // Early iOS 10 versions support `attachShadow` but not `getRootNode`,\n    // leading to errors. We need to check for `getRootNode`.\n    if (documentElement.getRootNode) isAttached = function(elem) {\n        return jQuery.contains(elem.ownerDocument, elem) || elem.getRootNode(composed) === elem.ownerDocument;\n    };\n    var isHiddenWithinTree = function(elem, el) {\n        // isHiddenWithinTree might be called from jQuery#filter function;\n        // in that case, element will be second argument\n        elem = el || elem;\n        // Inline style trumps all\n        return elem.style.display === \"none\" || elem.style.display === \"\" && // Otherwise, check computed style\n        // Support: Firefox <=43 - 45\n        // Disconnected elements can have computed display: none, so first confirm that elem is\n        // in the document.\n        isAttached(elem) && jQuery.css(elem, \"display\") === \"none\";\n    };\n    function adjustCSS(elem, prop, valueParts, tween) {\n        var adjusted, scale, maxIterations = 20, currentValue = tween ? function() {\n            return tween.cur();\n        } : function() {\n            return jQuery.css(elem, prop, \"\");\n        }, initial = currentValue(), unit = valueParts && valueParts[3] || (jQuery.cssNumber[prop] ? \"\" : \"px\"), // Starting value computation is required for potential unit mismatches\n        initialInUnit = elem.nodeType && (jQuery.cssNumber[prop] || unit !== \"px\" && +initial) && rcssNum.exec(jQuery.css(elem, prop));\n        if (initialInUnit && initialInUnit[3] !== unit) {\n            // Support: Firefox <=54\n            // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n            initial = initial / 2;\n            // Trust units reported by jQuery.css\n            unit = unit || initialInUnit[3];\n            // Iteratively approximate from a nonzero starting point\n            initialInUnit = +initial || 1;\n            while(maxIterations--){\n                // Evaluate and update our best guess (doubling guesses that zero out).\n                // Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n                jQuery.style(elem, prop, initialInUnit + unit);\n                if ((1 - scale) * (1 - (scale = currentValue() / initial || 0.5)) <= 0) maxIterations = 0;\n                initialInUnit = initialInUnit / scale;\n            }\n            initialInUnit = initialInUnit * 2;\n            jQuery.style(elem, prop, initialInUnit + unit);\n            // Make sure we update the tween properties later on\n            valueParts = valueParts || [];\n        }\n        if (valueParts) {\n            initialInUnit = +initialInUnit || +initial || 0;\n            // Apply relative offset (+=/-=) if specified\n            adjusted = valueParts[1] ? initialInUnit + (valueParts[1] + 1) * valueParts[2] : +valueParts[2];\n            if (tween) {\n                tween.unit = unit;\n                tween.start = initialInUnit;\n                tween.end = adjusted;\n            }\n        }\n        return adjusted;\n    }\n    var defaultDisplayMap = {};\n    function getDefaultDisplay(elem) {\n        var temp, doc = elem.ownerDocument, nodeName = elem.nodeName, display = defaultDisplayMap[nodeName];\n        if (display) return display;\n        temp = doc.body.appendChild(doc.createElement(nodeName));\n        display = jQuery.css(temp, \"display\");\n        temp.parentNode.removeChild(temp);\n        if (display === \"none\") display = \"block\";\n        defaultDisplayMap[nodeName] = display;\n        return display;\n    }\n    function showHide(elements, show) {\n        var display, elem, values = [], index = 0, length = elements.length;\n        // Determine new display value for elements that need to change\n        for(; index < length; index++){\n            elem = elements[index];\n            if (!elem.style) continue;\n            display = elem.style.display;\n            if (show) {\n                // Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n                // check is required in this first loop unless we have a nonempty display value (either\n                // inline or about-to-be-restored)\n                if (display === \"none\") {\n                    values[index] = dataPriv.get(elem, \"display\") || null;\n                    if (!values[index]) elem.style.display = \"\";\n                }\n                if (elem.style.display === \"\" && isHiddenWithinTree(elem)) values[index] = getDefaultDisplay(elem);\n            } else if (display !== \"none\") {\n                values[index] = \"none\";\n                // Remember what we're overwriting\n                dataPriv.set(elem, \"display\", display);\n            }\n        }\n        // Set the display of the elements in a second loop to avoid constant reflow\n        for(index = 0; index < length; index++)if (values[index] != null) elements[index].style.display = values[index];\n        return elements;\n    }\n    jQuery.fn.extend({\n        show: function() {\n            return showHide(this, true);\n        },\n        hide: function() {\n            return showHide(this);\n        },\n        toggle: function(state) {\n            if (typeof state === \"boolean\") return state ? this.show() : this.hide();\n            return this.each(function() {\n                if (isHiddenWithinTree(this)) jQuery(this).show();\n                else jQuery(this).hide();\n            });\n        }\n    });\n    var rcheckableType = /^(?:checkbox|radio)$/i;\n    var rtagName = /<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)/i;\n    var rscriptType = /^$|^module$|\\/(?:java|ecma)script/i;\n    (function() {\n        var fragment = document.createDocumentFragment(), div = fragment.appendChild(document.createElement(\"div\")), input = document.createElement(\"input\");\n        // Support: Android 4.0 - 4.3 only\n        // Check state lost if the name is set (trac-11217)\n        // Support: Windows Web Apps (WWA)\n        // `name` and `type` must use .setAttribute for WWA (trac-14901)\n        input.setAttribute(\"type\", \"radio\");\n        input.setAttribute(\"checked\", \"checked\");\n        input.setAttribute(\"name\", \"t\");\n        div.appendChild(input);\n        // Support: Android <=4.1 only\n        // Older WebKit doesn't clone checked state correctly in fragments\n        support.checkClone = div.cloneNode(true).cloneNode(true).lastChild.checked;\n        // Support: IE <=11 only\n        // Make sure textarea (and checkbox) defaultValue is properly cloned\n        div.innerHTML = \"<textarea>x</textarea>\";\n        support.noCloneChecked = !!div.cloneNode(true).lastChild.defaultValue;\n        // Support: IE <=9 only\n        // IE <=9 replaces <option> tags with their contents when inserted outside of\n        // the select element.\n        div.innerHTML = \"<option></option>\";\n        support.option = !!div.lastChild;\n    })();\n    // We have to close these tags to support XHTML (trac-13200)\n    var wrapMap = {\n        // XHTML parsers do not magically insert elements in the\n        // same way that tag soup parsers do. So we cannot shorten\n        // this by omitting <tbody> or other required elements.\n        thead: [\n            1,\n            \"<table>\",\n            \"</table>\"\n        ],\n        col: [\n            2,\n            \"<table><colgroup>\",\n            \"</colgroup></table>\"\n        ],\n        tr: [\n            2,\n            \"<table><tbody>\",\n            \"</tbody></table>\"\n        ],\n        td: [\n            3,\n            \"<table><tbody><tr>\",\n            \"</tr></tbody></table>\"\n        ],\n        _default: [\n            0,\n            \"\",\n            \"\"\n        ]\n    };\n    wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\n    wrapMap.th = wrapMap.td;\n    // Support: IE <=9 only\n    if (!support.option) wrapMap.optgroup = wrapMap.option = [\n        1,\n        \"<select multiple='multiple'>\",\n        \"</select>\"\n    ];\n    function getAll(context, tag) {\n        // Support: IE <=9 - 11 only\n        // Use typeof to avoid zero-argument method invocation on host objects (trac-15151)\n        var ret;\n        if (typeof context.getElementsByTagName !== \"undefined\") ret = context.getElementsByTagName(tag || \"*\");\n        else if (typeof context.querySelectorAll !== \"undefined\") ret = context.querySelectorAll(tag || \"*\");\n        else ret = [];\n        if (tag === undefined || tag && nodeName(context, tag)) return jQuery.merge([\n            context\n        ], ret);\n        return ret;\n    }\n    // Mark scripts as having already been evaluated\n    function setGlobalEval(elems, refElements) {\n        var i = 0, l = elems.length;\n        for(; i < l; i++)dataPriv.set(elems[i], \"globalEval\", !refElements || dataPriv.get(refElements[i], \"globalEval\"));\n    }\n    var rhtml = /<|&#?\\w+;/;\n    function buildFragment(elems, context, scripts, selection, ignored) {\n        var elem, tmp, tag, wrap, attached, j, fragment = context.createDocumentFragment(), nodes = [], i = 0, l = elems.length;\n        for(; i < l; i++){\n            elem = elems[i];\n            if (elem || elem === 0) {\n                // Add nodes directly\n                if (toType(elem) === \"object\") // Support: Android <=4.0 only, PhantomJS 1 only\n                // push.apply(_, arraylike) throws on ancient WebKit\n                jQuery.merge(nodes, elem.nodeType ? [\n                    elem\n                ] : elem);\n                else if (!rhtml.test(elem)) nodes.push(context.createTextNode(elem));\n                else {\n                    tmp = tmp || fragment.appendChild(context.createElement(\"div\"));\n                    // Deserialize a standard representation\n                    tag = (rtagName.exec(elem) || [\n                        \"\",\n                        \"\"\n                    ])[1].toLowerCase();\n                    wrap = wrapMap[tag] || wrapMap._default;\n                    tmp.innerHTML = wrap[1] + jQuery.htmlPrefilter(elem) + wrap[2];\n                    // Descend through wrappers to the right content\n                    j = wrap[0];\n                    while(j--)tmp = tmp.lastChild;\n                    // Support: Android <=4.0 only, PhantomJS 1 only\n                    // push.apply(_, arraylike) throws on ancient WebKit\n                    jQuery.merge(nodes, tmp.childNodes);\n                    // Remember the top-level container\n                    tmp = fragment.firstChild;\n                    // Ensure the created nodes are orphaned (trac-12392)\n                    tmp.textContent = \"\";\n                }\n            }\n        }\n        // Remove wrapper from fragment\n        fragment.textContent = \"\";\n        i = 0;\n        while(elem = nodes[i++]){\n            // Skip elements already in the context collection (trac-4087)\n            if (selection && jQuery.inArray(elem, selection) > -1) {\n                if (ignored) ignored.push(elem);\n                continue;\n            }\n            attached = isAttached(elem);\n            // Append to fragment\n            tmp = getAll(fragment.appendChild(elem), \"script\");\n            // Preserve script evaluation history\n            if (attached) setGlobalEval(tmp);\n            // Capture executables\n            if (scripts) {\n                j = 0;\n                while(elem = tmp[j++])if (rscriptType.test(elem.type || \"\")) scripts.push(elem);\n            }\n        }\n        return fragment;\n    }\n    var rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n    function returnTrue() {\n        return true;\n    }\n    function returnFalse() {\n        return false;\n    }\n    function on(elem, types, selector, data, fn, one) {\n        var origFn, type;\n        // Types can be a map of types/handlers\n        if (typeof types === \"object\") {\n            // ( types-Object, selector, data )\n            if (typeof selector !== \"string\") {\n                // ( types-Object, data )\n                data = data || selector;\n                selector = undefined;\n            }\n            for(type in types)on(elem, type, selector, data, types[type], one);\n            return elem;\n        }\n        if (data == null && fn == null) {\n            // ( types, fn )\n            fn = selector;\n            data = selector = undefined;\n        } else if (fn == null) {\n            if (typeof selector === \"string\") {\n                // ( types, selector, fn )\n                fn = data;\n                data = undefined;\n            } else {\n                // ( types, data, fn )\n                fn = data;\n                data = selector;\n                selector = undefined;\n            }\n        }\n        if (fn === false) fn = returnFalse;\n        else if (!fn) return elem;\n        if (one === 1) {\n            origFn = fn;\n            fn = function(event) {\n                // Can use an empty set, since event contains the info\n                jQuery().off(event);\n                return origFn.apply(this, arguments);\n            };\n            // Use same guid so caller can remove using origFn\n            fn.guid = origFn.guid || (origFn.guid = jQuery.guid++);\n        }\n        return elem.each(function() {\n            jQuery.event.add(this, types, fn, data, selector);\n        });\n    }\n    /*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */ jQuery.event = {\n        global: {},\n        add: function(elem, types, handler, data, selector) {\n            var handleObjIn, eventHandle, tmp, events, t, handleObj, special, handlers, type, namespaces, origType, elemData = dataPriv.get(elem);\n            // Only attach events to objects that accept data\n            if (!acceptData(elem)) return;\n            // Caller can pass in an object of custom data in lieu of the handler\n            if (handler.handler) {\n                handleObjIn = handler;\n                handler = handleObjIn.handler;\n                selector = handleObjIn.selector;\n            }\n            // Ensure that invalid selectors throw exceptions at attach time\n            // Evaluate against documentElement in case elem is a non-element node (e.g., document)\n            if (selector) jQuery.find.matchesSelector(documentElement, selector);\n            // Make sure that the handler has a unique ID, used to find/remove it later\n            if (!handler.guid) handler.guid = jQuery.guid++;\n            // Init the element's event structure and main handler, if this is the first\n            if (!(events = elemData.events)) events = elemData.events = Object.create(null);\n            if (!(eventHandle = elemData.handle)) eventHandle = elemData.handle = function(e) {\n                // Discard the second event of a jQuery.event.trigger() and\n                // when an event is called after a page has unloaded\n                return typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ? jQuery.event.dispatch.apply(elem, arguments) : undefined;\n            };\n            // Handle multiple events separated by a space\n            types = (types || \"\").match(rnothtmlwhite) || [\n                \"\"\n            ];\n            t = types.length;\n            while(t--){\n                tmp = rtypenamespace.exec(types[t]) || [];\n                type = origType = tmp[1];\n                namespaces = (tmp[2] || \"\").split(\".\").sort();\n                // There *must* be a type, no attaching namespace-only handlers\n                if (!type) continue;\n                // If event changes its type, use the special event handlers for the changed type\n                special = jQuery.event.special[type] || {};\n                // If selector defined, determine special event api type, otherwise given type\n                type = (selector ? special.delegateType : special.bindType) || type;\n                // Update special based on newly reset type\n                special = jQuery.event.special[type] || {};\n                // handleObj is passed to all event handlers\n                handleObj = jQuery.extend({\n                    type: type,\n                    origType: origType,\n                    data: data,\n                    handler: handler,\n                    guid: handler.guid,\n                    selector: selector,\n                    needsContext: selector && jQuery.expr.match.needsContext.test(selector),\n                    namespace: namespaces.join(\".\")\n                }, handleObjIn);\n                // Init the event handler queue if we're the first\n                if (!(handlers = events[type])) {\n                    handlers = events[type] = [];\n                    handlers.delegateCount = 0;\n                    // Only use addEventListener if the special events handler returns false\n                    if (!special.setup || special.setup.call(elem, data, namespaces, eventHandle) === false) {\n                        if (elem.addEventListener) elem.addEventListener(type, eventHandle);\n                    }\n                }\n                if (special.add) {\n                    special.add.call(elem, handleObj);\n                    if (!handleObj.handler.guid) handleObj.handler.guid = handler.guid;\n                }\n                // Add to the element's handler list, delegates in front\n                if (selector) handlers.splice(handlers.delegateCount++, 0, handleObj);\n                else handlers.push(handleObj);\n                // Keep track of which events have ever been used, for event optimization\n                jQuery.event.global[type] = true;\n            }\n        },\n        // Detach an event or set of events from an element\n        remove: function(elem, types, handler, selector, mappedTypes) {\n            var j, origCount, tmp, events, t, handleObj, special, handlers, type, namespaces, origType, elemData = dataPriv.hasData(elem) && dataPriv.get(elem);\n            if (!elemData || !(events = elemData.events)) return;\n            // Once for each type.namespace in types; type may be omitted\n            types = (types || \"\").match(rnothtmlwhite) || [\n                \"\"\n            ];\n            t = types.length;\n            while(t--){\n                tmp = rtypenamespace.exec(types[t]) || [];\n                type = origType = tmp[1];\n                namespaces = (tmp[2] || \"\").split(\".\").sort();\n                // Unbind all events (on this namespace, if provided) for the element\n                if (!type) {\n                    for(type in events)jQuery.event.remove(elem, type + types[t], handler, selector, true);\n                    continue;\n                }\n                special = jQuery.event.special[type] || {};\n                type = (selector ? special.delegateType : special.bindType) || type;\n                handlers = events[type] || [];\n                tmp = tmp[2] && new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\");\n                // Remove matching events\n                origCount = j = handlers.length;\n                while(j--){\n                    handleObj = handlers[j];\n                    if ((mappedTypes || origType === handleObj.origType) && (!handler || handler.guid === handleObj.guid) && (!tmp || tmp.test(handleObj.namespace)) && (!selector || selector === handleObj.selector || selector === \"**\" && handleObj.selector)) {\n                        handlers.splice(j, 1);\n                        if (handleObj.selector) handlers.delegateCount--;\n                        if (special.remove) special.remove.call(elem, handleObj);\n                    }\n                }\n                // Remove generic event handler if we removed something and no more handlers exist\n                // (avoids potential for endless recursion during removal of special event handlers)\n                if (origCount && !handlers.length) {\n                    if (!special.teardown || special.teardown.call(elem, namespaces, elemData.handle) === false) jQuery.removeEvent(elem, type, elemData.handle);\n                    delete events[type];\n                }\n            }\n            // Remove data and the expando if it's no longer used\n            if (jQuery.isEmptyObject(events)) dataPriv.remove(elem, \"handle events\");\n        },\n        dispatch: function(nativeEvent) {\n            var i, j, ret, matched, handleObj, handlerQueue, args = new Array(arguments.length), // Make a writable jQuery.Event from the native event object\n            event = jQuery.event.fix(nativeEvent), handlers = (dataPriv.get(this, \"events\") || Object.create(null))[event.type] || [], special = jQuery.event.special[event.type] || {};\n            // Use the fix-ed jQuery.Event rather than the (read-only) native event\n            args[0] = event;\n            for(i = 1; i < arguments.length; i++)args[i] = arguments[i];\n            event.delegateTarget = this;\n            // Call the preDispatch hook for the mapped type, and let it bail if desired\n            if (special.preDispatch && special.preDispatch.call(this, event) === false) return;\n            // Determine handlers\n            handlerQueue = jQuery.event.handlers.call(this, event, handlers);\n            // Run delegates first; they may want to stop propagation beneath us\n            i = 0;\n            while((matched = handlerQueue[i++]) && !event.isPropagationStopped()){\n                event.currentTarget = matched.elem;\n                j = 0;\n                while((handleObj = matched.handlers[j++]) && !event.isImmediatePropagationStopped())// If the event is namespaced, then each handler is only invoked if it is\n                // specially universal or its namespaces are a superset of the event's.\n                if (!event.rnamespace || handleObj.namespace === false || event.rnamespace.test(handleObj.namespace)) {\n                    event.handleObj = handleObj;\n                    event.data = handleObj.data;\n                    ret = ((jQuery.event.special[handleObj.origType] || {}).handle || handleObj.handler).apply(matched.elem, args);\n                    if (ret !== undefined) {\n                        if ((event.result = ret) === false) {\n                            event.preventDefault();\n                            event.stopPropagation();\n                        }\n                    }\n                }\n            }\n            // Call the postDispatch hook for the mapped type\n            if (special.postDispatch) special.postDispatch.call(this, event);\n            return event.result;\n        },\n        handlers: function(event, handlers) {\n            var i, handleObj, sel, matchedHandlers, matchedSelectors, handlerQueue = [], delegateCount = handlers.delegateCount, cur = event.target;\n            // Find delegate handlers\n            if (delegateCount && // Support: IE <=9\n            // Black-hole SVG <use> instance trees (trac-13180)\n            cur.nodeType && // Support: Firefox <=42\n            // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n            // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n            // Support: IE 11 only\n            // ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n            !(event.type === \"click\" && event.button >= 1)) {\n                for(; cur !== this; cur = cur.parentNode || this)// Don't check non-elements (trac-13208)\n                // Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)\n                if (cur.nodeType === 1 && !(event.type === \"click\" && cur.disabled === true)) {\n                    matchedHandlers = [];\n                    matchedSelectors = {};\n                    for(i = 0; i < delegateCount; i++){\n                        handleObj = handlers[i];\n                        // Don't conflict with Object.prototype properties (trac-13203)\n                        sel = handleObj.selector + \" \";\n                        if (matchedSelectors[sel] === undefined) matchedSelectors[sel] = handleObj.needsContext ? jQuery(sel, this).index(cur) > -1 : jQuery.find(sel, this, null, [\n                            cur\n                        ]).length;\n                        if (matchedSelectors[sel]) matchedHandlers.push(handleObj);\n                    }\n                    if (matchedHandlers.length) handlerQueue.push({\n                        elem: cur,\n                        handlers: matchedHandlers\n                    });\n                }\n            }\n            // Add the remaining (directly-bound) handlers\n            cur = this;\n            if (delegateCount < handlers.length) handlerQueue.push({\n                elem: cur,\n                handlers: handlers.slice(delegateCount)\n            });\n            return handlerQueue;\n        },\n        addProp: function(name, hook) {\n            Object.defineProperty(jQuery.Event.prototype, name, {\n                enumerable: true,\n                configurable: true,\n                get: isFunction(hook) ? function() {\n                    if (this.originalEvent) return hook(this.originalEvent);\n                } : function() {\n                    if (this.originalEvent) return this.originalEvent[name];\n                },\n                set: function(value) {\n                    Object.defineProperty(this, name, {\n                        enumerable: true,\n                        configurable: true,\n                        writable: true,\n                        value: value\n                    });\n                }\n            });\n        },\n        fix: function(originalEvent) {\n            return originalEvent[jQuery.expando] ? originalEvent : new jQuery.Event(originalEvent);\n        },\n        special: {\n            load: {\n                // Prevent triggered image.load events from bubbling to window.load\n                noBubble: true\n            },\n            click: {\n                // Utilize native event to ensure correct state for checkable inputs\n                setup: function(data) {\n                    // For mutual compressibility with _default, replace `this` access with a local var.\n                    // `|| data` is dead code meant only to preserve the variable through minification.\n                    var el = this || data;\n                    // Claim the first handler\n                    if (rcheckableType.test(el.type) && el.click && nodeName(el, \"input\")) // dataPriv.set( el, \"click\", ... )\n                    leverageNative(el, \"click\", true);\n                    // Return false to allow normal processing in the caller\n                    return false;\n                },\n                trigger: function(data) {\n                    // For mutual compressibility with _default, replace `this` access with a local var.\n                    // `|| data` is dead code meant only to preserve the variable through minification.\n                    var el = this || data;\n                    // Force setup before triggering a click\n                    if (rcheckableType.test(el.type) && el.click && nodeName(el, \"input\")) leverageNative(el, \"click\");\n                    // Return non-false to allow normal event-path propagation\n                    return true;\n                },\n                // For cross-browser consistency, suppress native .click() on links\n                // Also prevent it if we're currently inside a leveraged native-event stack\n                _default: function(event) {\n                    var target = event.target;\n                    return rcheckableType.test(target.type) && target.click && nodeName(target, \"input\") && dataPriv.get(target, \"click\") || nodeName(target, \"a\");\n                }\n            },\n            beforeunload: {\n                postDispatch: function(event) {\n                    // Support: Firefox 20+\n                    // Firefox doesn't alert if the returnValue field is not set.\n                    if (event.result !== undefined && event.originalEvent) event.originalEvent.returnValue = event.result;\n                }\n            }\n        }\n    };\n    // Ensure the presence of an event listener that handles manually-triggered\n    // synthetic events by interrupting progress until reinvoked in response to\n    // *native* events that it fires directly, ensuring that state changes have\n    // already occurred before other listeners are invoked.\n    function leverageNative(el, type, isSetup) {\n        // Missing `isSetup` indicates a trigger call, which must force setup through jQuery.event.add\n        if (!isSetup) {\n            if (dataPriv.get(el, type) === undefined) jQuery.event.add(el, type, returnTrue);\n            return;\n        }\n        // Register the controller as a special universal handler for all event namespaces\n        dataPriv.set(el, type, false);\n        jQuery.event.add(el, type, {\n            namespace: false,\n            handler: function(event) {\n                var result, saved = dataPriv.get(this, type);\n                if (event.isTrigger & 1 && this[type]) {\n                    // Interrupt processing of the outer synthetic .trigger()ed event\n                    if (!saved) {\n                        // Store arguments for use when handling the inner native event\n                        // There will always be at least one argument (an event object), so this array\n                        // will not be confused with a leftover capture object.\n                        saved = slice.call(arguments);\n                        dataPriv.set(this, type, saved);\n                        // Trigger the native event and capture its result\n                        this[type]();\n                        result = dataPriv.get(this, type);\n                        dataPriv.set(this, type, false);\n                        if (saved !== result) {\n                            // Cancel the outer synthetic event\n                            event.stopImmediatePropagation();\n                            event.preventDefault();\n                            return result;\n                        }\n                    // If this is an inner synthetic event for an event with a bubbling surrogate\n                    // (focus or blur), assume that the surrogate already propagated from triggering\n                    // the native event and prevent that from happening again here.\n                    // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the\n                    // bubbling surrogate propagates *after* the non-bubbling base), but that seems\n                    // less bad than duplication.\n                    } else if ((jQuery.event.special[type] || {}).delegateType) event.stopPropagation();\n                // If this is a native event triggered above, everything is now in order\n                // Fire an inner synthetic event with the original arguments\n                } else if (saved) {\n                    // ...and capture the result\n                    dataPriv.set(this, type, jQuery.event.trigger(saved[0], saved.slice(1), this));\n                    // Abort handling of the native event by all jQuery handlers while allowing\n                    // native handlers on the same element to run. On target, this is achieved\n                    // by stopping immediate propagation just on the jQuery event. However,\n                    // the native event is re-wrapped by a jQuery one on each level of the\n                    // propagation so the only way to stop it for jQuery is to stop it for\n                    // everyone via native `stopPropagation()`. This is not a problem for\n                    // focus/blur which don't bubble, but it does also stop click on checkboxes\n                    // and radios. We accept this limitation.\n                    event.stopPropagation();\n                    event.isImmediatePropagationStopped = returnTrue;\n                }\n            }\n        });\n    }\n    jQuery.removeEvent = function(elem, type, handle) {\n        // This \"if\" is needed for plain objects\n        if (elem.removeEventListener) elem.removeEventListener(type, handle);\n    };\n    jQuery.Event = function(src, props) {\n        // Allow instantiation without the 'new' keyword\n        if (!(this instanceof jQuery.Event)) return new jQuery.Event(src, props);\n        // Event object\n        if (src && src.type) {\n            this.originalEvent = src;\n            this.type = src.type;\n            // Events bubbling up the document may have been marked as prevented\n            // by a handler lower down the tree; reflect the correct value.\n            this.isDefaultPrevented = src.defaultPrevented || src.defaultPrevented === undefined && // Support: Android <=2.3 only\n            src.returnValue === false ? returnTrue : returnFalse;\n            // Create target properties\n            // Support: Safari <=6 - 7 only\n            // Target should not be a text node (trac-504, trac-13143)\n            this.target = src.target && src.target.nodeType === 3 ? src.target.parentNode : src.target;\n            this.currentTarget = src.currentTarget;\n            this.relatedTarget = src.relatedTarget;\n        // Event type\n        } else this.type = src;\n        // Put explicitly provided properties onto the event object\n        if (props) jQuery.extend(this, props);\n        // Create a timestamp if incoming event doesn't have one\n        this.timeStamp = src && src.timeStamp || Date.now();\n        // Mark it as fixed\n        this[jQuery.expando] = true;\n    };\n    // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n    // https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\n    jQuery.Event.prototype = {\n        constructor: jQuery.Event,\n        isDefaultPrevented: returnFalse,\n        isPropagationStopped: returnFalse,\n        isImmediatePropagationStopped: returnFalse,\n        isSimulated: false,\n        preventDefault: function() {\n            var e = this.originalEvent;\n            this.isDefaultPrevented = returnTrue;\n            if (e && !this.isSimulated) e.preventDefault();\n        },\n        stopPropagation: function() {\n            var e = this.originalEvent;\n            this.isPropagationStopped = returnTrue;\n            if (e && !this.isSimulated) e.stopPropagation();\n        },\n        stopImmediatePropagation: function() {\n            var e = this.originalEvent;\n            this.isImmediatePropagationStopped = returnTrue;\n            if (e && !this.isSimulated) e.stopImmediatePropagation();\n            this.stopPropagation();\n        }\n    };\n    // Includes all common event props including KeyEvent and MouseEvent specific props\n    jQuery.each({\n        altKey: true,\n        bubbles: true,\n        cancelable: true,\n        changedTouches: true,\n        ctrlKey: true,\n        detail: true,\n        eventPhase: true,\n        metaKey: true,\n        pageX: true,\n        pageY: true,\n        shiftKey: true,\n        view: true,\n        \"char\": true,\n        code: true,\n        charCode: true,\n        key: true,\n        keyCode: true,\n        button: true,\n        buttons: true,\n        clientX: true,\n        clientY: true,\n        offsetX: true,\n        offsetY: true,\n        pointerId: true,\n        pointerType: true,\n        screenX: true,\n        screenY: true,\n        targetTouches: true,\n        toElement: true,\n        touches: true,\n        which: true\n    }, jQuery.event.addProp);\n    jQuery.each({\n        focus: \"focusin\",\n        blur: \"focusout\"\n    }, function(type, delegateType) {\n        function focusMappedHandler(nativeEvent) {\n            if (document.documentMode) {\n                // Support: IE 11+\n                // Attach a single focusin/focusout handler on the document while someone wants\n                // focus/blur. This is because the former are synchronous in IE while the latter\n                // are async. In other browsers, all those handlers are invoked synchronously.\n                // `handle` from private data would already wrap the event, but we need\n                // to change the `type` here.\n                var handle = dataPriv.get(this, \"handle\"), event = jQuery.event.fix(nativeEvent);\n                event.type = nativeEvent.type === \"focusin\" ? \"focus\" : \"blur\";\n                event.isSimulated = true;\n                // First, handle focusin/focusout\n                handle(nativeEvent);\n                // ...then, handle focus/blur\n                //\n                // focus/blur don't bubble while focusin/focusout do; simulate the former by only\n                // invoking the handler at the lower level.\n                if (event.target === event.currentTarget) // The setup part calls `leverageNative`, which, in turn, calls\n                // `jQuery.event.add`, so event handle will already have been set\n                // by this point.\n                handle(event);\n            } else // For non-IE browsers, attach a single capturing handler on the document\n            // while someone wants focusin/focusout.\n            jQuery.event.simulate(delegateType, nativeEvent.target, jQuery.event.fix(nativeEvent));\n        }\n        jQuery.event.special[type] = {\n            // Utilize native event if possible so blur/focus sequence is correct\n            setup: function() {\n                var attaches;\n                // Claim the first handler\n                // dataPriv.set( this, \"focus\", ... )\n                // dataPriv.set( this, \"blur\", ... )\n                leverageNative(this, type, true);\n                if (document.documentMode) {\n                    // Support: IE 9 - 11+\n                    // We use the same native handler for focusin & focus (and focusout & blur)\n                    // so we need to coordinate setup & teardown parts between those events.\n                    // Use `delegateType` as the key as `type` is already used by `leverageNative`.\n                    attaches = dataPriv.get(this, delegateType);\n                    if (!attaches) this.addEventListener(delegateType, focusMappedHandler);\n                    dataPriv.set(this, delegateType, (attaches || 0) + 1);\n                } else // Return false to allow normal processing in the caller\n                return false;\n            },\n            trigger: function() {\n                // Force setup before trigger\n                leverageNative(this, type);\n                // Return non-false to allow normal event-path propagation\n                return true;\n            },\n            teardown: function() {\n                var attaches;\n                if (document.documentMode) {\n                    attaches = dataPriv.get(this, delegateType) - 1;\n                    if (!attaches) {\n                        this.removeEventListener(delegateType, focusMappedHandler);\n                        dataPriv.remove(this, delegateType);\n                    } else dataPriv.set(this, delegateType, attaches);\n                } else // Return false to indicate standard teardown should be applied\n                return false;\n            },\n            // Suppress native focus or blur if we're currently inside\n            // a leveraged native-event stack\n            _default: function(event) {\n                return dataPriv.get(event.target, type);\n            },\n            delegateType: delegateType\n        };\n        // Support: Firefox <=44\n        // Firefox doesn't have focus(in | out) events\n        // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n        //\n        // Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n        // focus(in | out) events fire after focus & blur events,\n        // which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n        // Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\n        //\n        // Support: IE 9 - 11+\n        // To preserve relative focusin/focus & focusout/blur event order guaranteed on the 3.x branch,\n        // attach a single handler for both events in IE.\n        jQuery.event.special[delegateType] = {\n            setup: function() {\n                // Handle: regular nodes (via `this.ownerDocument`), window\n                // (via `this.document`) & document (via `this`).\n                var doc = this.ownerDocument || this.document || this, dataHolder = document.documentMode ? this : doc, attaches = dataPriv.get(dataHolder, delegateType);\n                // Support: IE 9 - 11+\n                // We use the same native handler for focusin & focus (and focusout & blur)\n                // so we need to coordinate setup & teardown parts between those events.\n                // Use `delegateType` as the key as `type` is already used by `leverageNative`.\n                if (!attaches) {\n                    if (document.documentMode) this.addEventListener(delegateType, focusMappedHandler);\n                    else doc.addEventListener(type, focusMappedHandler, true);\n                }\n                dataPriv.set(dataHolder, delegateType, (attaches || 0) + 1);\n            },\n            teardown: function() {\n                var doc = this.ownerDocument || this.document || this, dataHolder = document.documentMode ? this : doc, attaches = dataPriv.get(dataHolder, delegateType) - 1;\n                if (!attaches) {\n                    if (document.documentMode) this.removeEventListener(delegateType, focusMappedHandler);\n                    else doc.removeEventListener(type, focusMappedHandler, true);\n                    dataPriv.remove(dataHolder, delegateType);\n                } else dataPriv.set(dataHolder, delegateType, attaches);\n            }\n        };\n    });\n    // Create mouseenter/leave events using mouseover/out and event-time checks\n    // so that event delegation works in jQuery.\n    // Do the same for pointerenter/pointerleave and pointerover/pointerout\n    //\n    // Support: Safari 7 only\n    // Safari sends mouseenter too often; see:\n    // https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n    // for the description of the bug (it existed in older Chrome versions as well).\n    jQuery.each({\n        mouseenter: \"mouseover\",\n        mouseleave: \"mouseout\",\n        pointerenter: \"pointerover\",\n        pointerleave: \"pointerout\"\n    }, function(orig, fix) {\n        jQuery.event.special[orig] = {\n            delegateType: fix,\n            bindType: fix,\n            handle: function(event) {\n                var ret, target = this, related = event.relatedTarget, handleObj = event.handleObj;\n                // For mouseenter/leave call the handler if related is outside the target.\n                // NB: No relatedTarget if the mouse left/entered the browser window\n                if (!related || related !== target && !jQuery.contains(target, related)) {\n                    event.type = handleObj.origType;\n                    ret = handleObj.handler.apply(this, arguments);\n                    event.type = fix;\n                }\n                return ret;\n            }\n        };\n    });\n    jQuery.fn.extend({\n        on: function(types, selector, data, fn) {\n            return on(this, types, selector, data, fn);\n        },\n        one: function(types, selector, data, fn) {\n            return on(this, types, selector, data, fn, 1);\n        },\n        off: function(types, selector, fn) {\n            var handleObj, type;\n            if (types && types.preventDefault && types.handleObj) {\n                // ( event )  dispatched jQuery.Event\n                handleObj = types.handleObj;\n                jQuery(types.delegateTarget).off(handleObj.namespace ? handleObj.origType + \".\" + handleObj.namespace : handleObj.origType, handleObj.selector, handleObj.handler);\n                return this;\n            }\n            if (typeof types === \"object\") {\n                // ( types-object [, selector] )\n                for(type in types)this.off(type, selector, types[type]);\n                return this;\n            }\n            if (selector === false || typeof selector === \"function\") {\n                // ( types [, fn] )\n                fn = selector;\n                selector = undefined;\n            }\n            if (fn === false) fn = returnFalse;\n            return this.each(function() {\n                jQuery.event.remove(this, types, fn, selector);\n            });\n        }\n    });\n    var // Support: IE <=10 - 11, Edge 12 - 13 only\n    // In IE/Edge using regex groups here causes severe slowdowns.\n    // See https://connect.microsoft.com/IE/feedback/details/1736512/\n    rnoInnerhtml = /<script|<style|<link/i, // checked=\"checked\" or checked\n    rchecked = /checked\\s*(?:[^=]|=\\s*.checked.)/i, rcleanScript = /^\\s*<!\\[CDATA\\[|\\]\\]>\\s*$/g;\n    // Prefer a tbody over its parent table for containing new rows\n    function manipulationTarget(elem, content) {\n        if (nodeName(elem, \"table\") && nodeName(content.nodeType !== 11 ? content : content.firstChild, \"tr\")) return jQuery(elem).children(\"tbody\")[0] || elem;\n        return elem;\n    }\n    // Replace/restore the type attribute of script elements for safe DOM manipulation\n    function disableScript(elem) {\n        elem.type = (elem.getAttribute(\"type\") !== null) + \"/\" + elem.type;\n        return elem;\n    }\n    function restoreScript(elem) {\n        if ((elem.type || \"\").slice(0, 5) === \"true/\") elem.type = elem.type.slice(5);\n        else elem.removeAttribute(\"type\");\n        return elem;\n    }\n    function cloneCopyEvent(src, dest) {\n        var i, l, type, pdataOld, udataOld, udataCur, events;\n        if (dest.nodeType !== 1) return;\n        // 1. Copy private data: events, handlers, etc.\n        if (dataPriv.hasData(src)) {\n            pdataOld = dataPriv.get(src);\n            events = pdataOld.events;\n            if (events) {\n                dataPriv.remove(dest, \"handle events\");\n                for(type in events)for(i = 0, l = events[type].length; i < l; i++)jQuery.event.add(dest, type, events[type][i]);\n            }\n        }\n        // 2. Copy user data\n        if (dataUser.hasData(src)) {\n            udataOld = dataUser.access(src);\n            udataCur = jQuery.extend({}, udataOld);\n            dataUser.set(dest, udataCur);\n        }\n    }\n    // Fix IE bugs, see support tests\n    function fixInput(src, dest) {\n        var nodeName = dest.nodeName.toLowerCase();\n        // Fails to persist the checked state of a cloned checkbox or radio button.\n        if (nodeName === \"input\" && rcheckableType.test(src.type)) dest.checked = src.checked;\n        else if (nodeName === \"input\" || nodeName === \"textarea\") dest.defaultValue = src.defaultValue;\n    }\n    function domManip(collection, args, callback, ignored) {\n        // Flatten any nested arrays\n        args = flat(args);\n        var fragment, first, scripts, hasScripts, node, doc, i = 0, l = collection.length, iNoClone = l - 1, value = args[0], valueIsFunction = isFunction(value);\n        // We can't cloneNode fragments that contain checked, in WebKit\n        if (valueIsFunction || l > 1 && typeof value === \"string\" && !support.checkClone && rchecked.test(value)) return collection.each(function(index) {\n            var self = collection.eq(index);\n            if (valueIsFunction) args[0] = value.call(this, index, self.html());\n            domManip(self, args, callback, ignored);\n        });\n        if (l) {\n            fragment = buildFragment(args, collection[0].ownerDocument, false, collection, ignored);\n            first = fragment.firstChild;\n            if (fragment.childNodes.length === 1) fragment = first;\n            // Require either new content or an interest in ignored elements to invoke the callback\n            if (first || ignored) {\n                scripts = jQuery.map(getAll(fragment, \"script\"), disableScript);\n                hasScripts = scripts.length;\n                // Use the original fragment for the last item\n                // instead of the first because it can end up\n                // being emptied incorrectly in certain situations (trac-8070).\n                for(; i < l; i++){\n                    node = fragment;\n                    if (i !== iNoClone) {\n                        node = jQuery.clone(node, true, true);\n                        // Keep references to cloned scripts for later restoration\n                        if (hasScripts) // Support: Android <=4.0 only, PhantomJS 1 only\n                        // push.apply(_, arraylike) throws on ancient WebKit\n                        jQuery.merge(scripts, getAll(node, \"script\"));\n                    }\n                    callback.call(collection[i], node, i);\n                }\n                if (hasScripts) {\n                    doc = scripts[scripts.length - 1].ownerDocument;\n                    // Re-enable scripts\n                    jQuery.map(scripts, restoreScript);\n                    // Evaluate executable scripts on first document insertion\n                    for(i = 0; i < hasScripts; i++){\n                        node = scripts[i];\n                        if (rscriptType.test(node.type || \"\") && !dataPriv.access(node, \"globalEval\") && jQuery.contains(doc, node)) {\n                            if (node.src && (node.type || \"\").toLowerCase() !== \"module\") // Optional AJAX dependency, but won't run scripts if not present\n                            {\n                                if (jQuery._evalUrl && !node.noModule) jQuery._evalUrl(node.src, {\n                                    nonce: node.nonce || node.getAttribute(\"nonce\")\n                                }, doc);\n                            } else // Unwrap a CDATA section containing script contents. This shouldn't be\n                            // needed as in XML documents they're already not visible when\n                            // inspecting element contents and in HTML documents they have no\n                            // meaning but we're preserving that logic for backwards compatibility.\n                            // This will be removed completely in 4.0. See gh-4904.\n                            DOMEval(node.textContent.replace(rcleanScript, \"\"), node, doc);\n                        }\n                    }\n                }\n            }\n        }\n        return collection;\n    }\n    function remove(elem, selector, keepData) {\n        var node, nodes = selector ? jQuery.filter(selector, elem) : elem, i = 0;\n        for(; (node = nodes[i]) != null; i++){\n            if (!keepData && node.nodeType === 1) jQuery.cleanData(getAll(node));\n            if (node.parentNode) {\n                if (keepData && isAttached(node)) setGlobalEval(getAll(node, \"script\"));\n                node.parentNode.removeChild(node);\n            }\n        }\n        return elem;\n    }\n    jQuery.extend({\n        htmlPrefilter: function(html) {\n            return html;\n        },\n        clone: function(elem, dataAndEvents, deepDataAndEvents) {\n            var i, l, srcElements, destElements, clone = elem.cloneNode(true), inPage = isAttached(elem);\n            // Fix IE cloning issues\n            if (!support.noCloneChecked && (elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem)) {\n                // We eschew jQuery#find here for performance reasons:\n                // https://jsperf.com/getall-vs-sizzle/2\n                destElements = getAll(clone);\n                srcElements = getAll(elem);\n                for(i = 0, l = srcElements.length; i < l; i++)fixInput(srcElements[i], destElements[i]);\n            }\n            // Copy the events from the original to the clone\n            if (dataAndEvents) {\n                if (deepDataAndEvents) {\n                    srcElements = srcElements || getAll(elem);\n                    destElements = destElements || getAll(clone);\n                    for(i = 0, l = srcElements.length; i < l; i++)cloneCopyEvent(srcElements[i], destElements[i]);\n                } else cloneCopyEvent(elem, clone);\n            }\n            // Preserve script evaluation history\n            destElements = getAll(clone, \"script\");\n            if (destElements.length > 0) setGlobalEval(destElements, !inPage && getAll(elem, \"script\"));\n            // Return the cloned set\n            return clone;\n        },\n        cleanData: function(elems) {\n            var data, elem, type, special = jQuery.event.special, i = 0;\n            for(; (elem = elems[i]) !== undefined; i++)if (acceptData(elem)) {\n                if (data = elem[dataPriv.expando]) {\n                    if (data.events) {\n                        for(type in data.events)if (special[type]) jQuery.event.remove(elem, type);\n                        else jQuery.removeEvent(elem, type, data.handle);\n                    }\n                    // Support: Chrome <=35 - 45+\n                    // Assign undefined instead of using delete, see Data#remove\n                    elem[dataPriv.expando] = undefined;\n                }\n                if (elem[dataUser.expando]) // Support: Chrome <=35 - 45+\n                // Assign undefined instead of using delete, see Data#remove\n                elem[dataUser.expando] = undefined;\n            }\n        }\n    });\n    jQuery.fn.extend({\n        detach: function(selector) {\n            return remove(this, selector, true);\n        },\n        remove: function(selector) {\n            return remove(this, selector);\n        },\n        text: function(value) {\n            return access(this, function(value) {\n                return value === undefined ? jQuery.text(this) : this.empty().each(function() {\n                    if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) this.textContent = value;\n                });\n            }, null, value, arguments.length);\n        },\n        append: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                    var target = manipulationTarget(this, elem);\n                    target.appendChild(elem);\n                }\n            });\n        },\n        prepend: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                    var target = manipulationTarget(this, elem);\n                    target.insertBefore(elem, target.firstChild);\n                }\n            });\n        },\n        before: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.parentNode) this.parentNode.insertBefore(elem, this);\n            });\n        },\n        after: function() {\n            return domManip(this, arguments, function(elem) {\n                if (this.parentNode) this.parentNode.insertBefore(elem, this.nextSibling);\n            });\n        },\n        empty: function() {\n            var elem, i = 0;\n            for(; (elem = this[i]) != null; i++)if (elem.nodeType === 1) {\n                // Prevent memory leaks\n                jQuery.cleanData(getAll(elem, false));\n                // Remove any remaining nodes\n                elem.textContent = \"\";\n            }\n            return this;\n        },\n        clone: function(dataAndEvents, deepDataAndEvents) {\n            dataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n            deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n            return this.map(function() {\n                return jQuery.clone(this, dataAndEvents, deepDataAndEvents);\n            });\n        },\n        html: function(value) {\n            return access(this, function(value) {\n                var elem = this[0] || {}, i = 0, l = this.length;\n                if (value === undefined && elem.nodeType === 1) return elem.innerHTML;\n                // See if we can take a shortcut and just use innerHTML\n                if (typeof value === \"string\" && !rnoInnerhtml.test(value) && !wrapMap[(rtagName.exec(value) || [\n                    \"\",\n                    \"\"\n                ])[1].toLowerCase()]) {\n                    value = jQuery.htmlPrefilter(value);\n                    try {\n                        for(; i < l; i++){\n                            elem = this[i] || {};\n                            // Remove element nodes and prevent memory leaks\n                            if (elem.nodeType === 1) {\n                                jQuery.cleanData(getAll(elem, false));\n                                elem.innerHTML = value;\n                            }\n                        }\n                        elem = 0;\n                    // If using innerHTML throws an exception, use the fallback method\n                    } catch (e) {}\n                }\n                if (elem) this.empty().append(value);\n            }, null, value, arguments.length);\n        },\n        replaceWith: function() {\n            var ignored = [];\n            // Make the changes, replacing each non-ignored context element with the new content\n            return domManip(this, arguments, function(elem) {\n                var parent = this.parentNode;\n                if (jQuery.inArray(this, ignored) < 0) {\n                    jQuery.cleanData(getAll(this));\n                    if (parent) parent.replaceChild(elem, this);\n                }\n            // Force callback invocation\n            }, ignored);\n        }\n    });\n    jQuery.each({\n        appendTo: \"append\",\n        prependTo: \"prepend\",\n        insertBefore: \"before\",\n        insertAfter: \"after\",\n        replaceAll: \"replaceWith\"\n    }, function(name, original) {\n        jQuery.fn[name] = function(selector) {\n            var elems, ret = [], insert = jQuery(selector), last = insert.length - 1, i = 0;\n            for(; i <= last; i++){\n                elems = i === last ? this : this.clone(true);\n                jQuery(insert[i])[original](elems);\n                // Support: Android <=4.0 only, PhantomJS 1 only\n                // .get() because push.apply(_, arraylike) throws on ancient WebKit\n                push.apply(ret, elems.get());\n            }\n            return this.pushStack(ret);\n        };\n    });\n    var rnumnonpx = new RegExp(\"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\");\n    var rcustomProp = /^--/;\n    var getStyles = function(elem) {\n        // Support: IE <=11 only, Firefox <=30 (trac-15098, trac-14150)\n        // IE throws on elements created in popups\n        // FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n        var view = elem.ownerDocument.defaultView;\n        if (!view || !view.opener) view = window1;\n        return view.getComputedStyle(elem);\n    };\n    var swap = function(elem, options, callback) {\n        var ret, name, old = {};\n        // Remember the old values, and insert the new ones\n        for(name in options){\n            old[name] = elem.style[name];\n            elem.style[name] = options[name];\n        }\n        ret = callback.call(elem);\n        // Revert the old values\n        for(name in options)elem.style[name] = old[name];\n        return ret;\n    };\n    var rboxStyle = new RegExp(cssExpand.join(\"|\"), \"i\");\n    (function() {\n        // Executing both pixelPosition & boxSizingReliable tests require only one layout\n        // so they're executed at the same time to save the second computation.\n        function computeStyleTests() {\n            // This is a singleton, we need to execute it only once\n            if (!div) return;\n            container.style.cssText = \"position:absolute;left:-11111px;width:60px;margin-top:1px;padding:0;border:0\";\n            div.style.cssText = \"position:relative;display:block;box-sizing:border-box;overflow:scroll;margin:auto;border:1px;padding:1px;width:60%;top:1%\";\n            documentElement.appendChild(container).appendChild(div);\n            var divStyle = window1.getComputedStyle(div);\n            pixelPositionVal = divStyle.top !== \"1%\";\n            // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n            reliableMarginLeftVal = roundPixelMeasures(divStyle.marginLeft) === 12;\n            // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n            // Some styles come back with percentage values, even though they shouldn't\n            div.style.right = \"60%\";\n            pixelBoxStylesVal = roundPixelMeasures(divStyle.right) === 36;\n            // Support: IE 9 - 11 only\n            // Detect misreporting of content dimensions for box-sizing:border-box elements\n            boxSizingReliableVal = roundPixelMeasures(divStyle.width) === 36;\n            // Support: IE 9 only\n            // Detect overflow:scroll screwiness (gh-3699)\n            // Support: Chrome <=64\n            // Don't get tricked when zoom affects offsetWidth (gh-4029)\n            div.style.position = \"absolute\";\n            scrollboxSizeVal = roundPixelMeasures(div.offsetWidth / 3) === 12;\n            documentElement.removeChild(container);\n            // Nullify the div so it wouldn't be stored in the memory and\n            // it will also be a sign that checks already performed\n            div = null;\n        }\n        function roundPixelMeasures(measure) {\n            return Math.round(parseFloat(measure));\n        }\n        var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, reliableTrDimensionsVal, reliableMarginLeftVal, container = document.createElement(\"div\"), div = document.createElement(\"div\");\n        // Finish early in limited (non-browser) environments\n        if (!div.style) return;\n        // Support: IE <=9 - 11 only\n        // Style of cloned element affects source element cloned (trac-8908)\n        div.style.backgroundClip = \"content-box\";\n        div.cloneNode(true).style.backgroundClip = \"\";\n        support.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n        jQuery.extend(support, {\n            boxSizingReliable: function() {\n                computeStyleTests();\n                return boxSizingReliableVal;\n            },\n            pixelBoxStyles: function() {\n                computeStyleTests();\n                return pixelBoxStylesVal;\n            },\n            pixelPosition: function() {\n                computeStyleTests();\n                return pixelPositionVal;\n            },\n            reliableMarginLeft: function() {\n                computeStyleTests();\n                return reliableMarginLeftVal;\n            },\n            scrollboxSize: function() {\n                computeStyleTests();\n                return scrollboxSizeVal;\n            },\n            // Support: IE 9 - 11+, Edge 15 - 18+\n            // IE/Edge misreport `getComputedStyle` of table rows with width/height\n            // set in CSS while `offset*` properties report correct values.\n            // Behavior in IE 9 is more subtle than in newer versions & it passes\n            // some versions of this test; make sure not to make it pass there!\n            //\n            // Support: Firefox 70+\n            // Only Firefox includes border widths\n            // in computed dimensions. (gh-4529)\n            reliableTrDimensions: function() {\n                var table, tr, trChild, trStyle;\n                if (reliableTrDimensionsVal == null) {\n                    table = document.createElement(\"table\");\n                    tr = document.createElement(\"tr\");\n                    trChild = document.createElement(\"div\");\n                    table.style.cssText = \"position:absolute;left:-11111px;border-collapse:separate\";\n                    tr.style.cssText = \"box-sizing:content-box;border:1px solid\";\n                    // Support: Chrome 86+\n                    // Height set through cssText does not get applied.\n                    // Computed height then comes back as 0.\n                    tr.style.height = \"1px\";\n                    trChild.style.height = \"9px\";\n                    // Support: Android 8 Chrome 86+\n                    // In our bodyBackground.html iframe,\n                    // display for all div elements is set to \"inline\",\n                    // which causes a problem only in Android 8 Chrome 86.\n                    // Ensuring the div is `display: block`\n                    // gets around this issue.\n                    trChild.style.display = \"block\";\n                    documentElement.appendChild(table).appendChild(tr).appendChild(trChild);\n                    trStyle = window1.getComputedStyle(tr);\n                    reliableTrDimensionsVal = parseInt(trStyle.height, 10) + parseInt(trStyle.borderTopWidth, 10) + parseInt(trStyle.borderBottomWidth, 10) === tr.offsetHeight;\n                    documentElement.removeChild(table);\n                }\n                return reliableTrDimensionsVal;\n            }\n        });\n    })();\n    function curCSS(elem, name, computed) {\n        var width, minWidth, maxWidth, ret, isCustomProp = rcustomProp.test(name), // Support: Firefox 51+\n        // Retrieving style before computed somehow\n        // fixes an issue with getting wrong values\n        // on detached elements\n        style = elem.style;\n        computed = computed || getStyles(elem);\n        // getPropertyValue is needed for:\n        //   .css('filter') (IE 9 only, trac-12537)\n        //   .css('--customProperty) (gh-3144)\n        if (computed) {\n            // Support: IE <=9 - 11+\n            // IE only supports `\"float\"` in `getPropertyValue`; in computed styles\n            // it's only available as `\"cssFloat\"`. We no longer modify properties\n            // sent to `.css()` apart from camelCasing, so we need to check both.\n            // Normally, this would create difference in behavior: if\n            // `getPropertyValue` returns an empty string, the value returned\n            // by `.css()` would be `undefined`. This is usually the case for\n            // disconnected elements. However, in IE even disconnected elements\n            // with no styles return `\"none\"` for `getPropertyValue( \"float\" )`\n            ret = computed.getPropertyValue(name) || computed[name];\n            if (isCustomProp && ret) // Support: Firefox 105+, Chrome <=105+\n            // Spec requires trimming whitespace for custom properties (gh-4926).\n            // Firefox only trims leading whitespace. Chrome just collapses\n            // both leading & trailing whitespace to a single space.\n            //\n            // Fall back to `undefined` if empty string returned.\n            // This collapses a missing definition with property defined\n            // and set to an empty string but there's no standard API\n            // allowing us to differentiate them without a performance penalty\n            // and returning `undefined` aligns with older jQuery.\n            //\n            // rtrimCSS treats U+000D CARRIAGE RETURN and U+000C FORM FEED\n            // as whitespace while CSS does not, but this is not a problem\n            // because CSS preprocessing replaces them with U+000A LINE FEED\n            // (which *is* CSS whitespace)\n            // https://www.w3.org/TR/css-syntax-3/#input-preprocessing\n            ret = ret.replace(rtrimCSS, \"$1\") || undefined;\n            if (ret === \"\" && !isAttached(elem)) ret = jQuery.style(elem, name);\n            // A tribute to the \"awesome hack by Dean Edwards\"\n            // Android Browser returns percentage for some values,\n            // but width seems to be reliably pixels.\n            // This is against the CSSOM draft spec:\n            // https://drafts.csswg.org/cssom/#resolved-values\n            if (!support.pixelBoxStyles() && rnumnonpx.test(ret) && rboxStyle.test(name)) {\n                // Remember the original values\n                width = style.width;\n                minWidth = style.minWidth;\n                maxWidth = style.maxWidth;\n                // Put in the new values to get a computed value out\n                style.minWidth = style.maxWidth = style.width = ret;\n                ret = computed.width;\n                // Revert the changed values\n                style.width = width;\n                style.minWidth = minWidth;\n                style.maxWidth = maxWidth;\n            }\n        }\n        return ret !== undefined ? // Support: IE <=9 - 11 only\n        // IE returns zIndex value as an integer.\n        ret + \"\" : ret;\n    }\n    function addGetHookIf(conditionFn, hookFn) {\n        // Define the hook, we'll check on the first run if it's really needed.\n        return {\n            get: function() {\n                if (conditionFn()) {\n                    // Hook not needed (or it's not possible to use it due\n                    // to missing dependency), remove it.\n                    delete this.get;\n                    return;\n                }\n                // Hook needed; redefine it so that the support test is not executed again.\n                return (this.get = hookFn).apply(this, arguments);\n            }\n        };\n    }\n    var cssPrefixes = [\n        \"Webkit\",\n        \"Moz\",\n        \"ms\"\n    ], emptyStyle = document.createElement(\"div\").style, vendorProps = {};\n    // Return a vendor-prefixed property or undefined\n    function vendorPropName(name) {\n        // Check for vendor prefixed names\n        var capName = name[0].toUpperCase() + name.slice(1), i = cssPrefixes.length;\n        while(i--){\n            name = cssPrefixes[i] + capName;\n            if (name in emptyStyle) return name;\n        }\n    }\n    // Return a potentially-mapped jQuery.cssProps or vendor prefixed property\n    function finalPropName(name) {\n        var final = jQuery.cssProps[name] || vendorProps[name];\n        if (final) return final;\n        if (name in emptyStyle) return name;\n        return vendorProps[name] = vendorPropName(name) || name;\n    }\n    var // Swappable if display is none or starts with table\n    // except \"table\", \"table-cell\", or \"table-caption\"\n    // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n    rdisplayswap = /^(none|table(?!-c[ea]).+)/, cssShow = {\n        position: \"absolute\",\n        visibility: \"hidden\",\n        display: \"block\"\n    }, cssNormalTransform = {\n        letterSpacing: \"0\",\n        fontWeight: \"400\"\n    };\n    function setPositiveNumber(_elem, value, subtract) {\n        // Any relative (+/-) values have already been\n        // normalized at this point\n        var matches = rcssNum.exec(value);\n        return matches ? // Guard against undefined \"subtract\", e.g., when used as in cssHooks\n        Math.max(0, matches[2] - (subtract || 0)) + (matches[3] || \"px\") : value;\n    }\n    function boxModelAdjustment(elem, dimension, box, isBorderBox, styles, computedVal) {\n        var i = dimension === \"width\" ? 1 : 0, extra = 0, delta = 0, marginDelta = 0;\n        // Adjustment may not be necessary\n        if (box === (isBorderBox ? \"border\" : \"content\")) return 0;\n        for(; i < 4; i += 2){\n            // Both box models exclude margin\n            // Count margin delta separately to only add it after scroll gutter adjustment.\n            // This is needed to make negative margins work with `outerHeight( true )` (gh-3982).\n            if (box === \"margin\") marginDelta += jQuery.css(elem, box + cssExpand[i], true, styles);\n            // If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n            if (!isBorderBox) {\n                // Add padding\n                delta += jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n                // For \"border\" or \"margin\", add border\n                if (box !== \"padding\") delta += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n                else extra += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            // If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n            // \"padding\" or \"margin\"\n            } else {\n                // For \"content\", subtract padding\n                if (box === \"content\") delta -= jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n                // For \"content\" or \"padding\", subtract border\n                if (box !== \"margin\") delta -= jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            }\n        }\n        // Account for positive content-box scroll gutter when requested by providing computedVal\n        if (!isBorderBox && computedVal >= 0) // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n        // Assuming integer scroll gutter, subtract the rest and round down\n        delta += Math.max(0, Math.ceil(elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] - computedVal - delta - extra - 0.5)) || 0;\n        return delta + marginDelta;\n    }\n    function getWidthOrHeight(elem, dimension, extra) {\n        // Start with computed style\n        var styles = getStyles(elem), // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).\n        // Fake content-box until we know it's needed to know the true value.\n        boxSizingNeeded = !support.boxSizingReliable() || extra, isBorderBox = boxSizingNeeded && jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\", valueIsBorderBox = isBorderBox, val = curCSS(elem, dimension, styles), offsetProp = \"offset\" + dimension[0].toUpperCase() + dimension.slice(1);\n        // Support: Firefox <=54\n        // Return a confounding non-pixel value or feign ignorance, as appropriate.\n        if (rnumnonpx.test(val)) {\n            if (!extra) return val;\n            val = \"auto\";\n        }\n        // Support: IE 9 - 11 only\n        // Use offsetWidth/offsetHeight for when box sizing is unreliable.\n        // In those cases, the computed value can be trusted to be border-box.\n        if ((!support.boxSizingReliable() && isBorderBox || // Support: IE 10 - 11+, Edge 15 - 18+\n        // IE/Edge misreport `getComputedStyle` of table rows with width/height\n        // set in CSS while `offset*` properties report correct values.\n        // Interestingly, in some cases IE 9 doesn't suffer from this issue.\n        !support.reliableTrDimensions() && nodeName(elem, \"tr\") || // Fall back to offsetWidth/offsetHeight when value is \"auto\"\n        // This happens for inline elements with no explicit setting (gh-3571)\n        val === \"auto\" || // Support: Android <=4.1 - 4.3 only\n        // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n        !parseFloat(val) && jQuery.css(elem, \"display\", false, styles) === \"inline\") && // Make sure the element is visible & connected\n        elem.getClientRects().length) {\n            isBorderBox = jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\";\n            // Where available, offsetWidth/offsetHeight approximate border box dimensions.\n            // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the\n            // retrieved value as a content box dimension.\n            valueIsBorderBox = offsetProp in elem;\n            if (valueIsBorderBox) val = elem[offsetProp];\n        }\n        // Normalize \"\" and auto\n        val = parseFloat(val) || 0;\n        // Adjust for the element's box model\n        return val + boxModelAdjustment(elem, dimension, extra || (isBorderBox ? \"border\" : \"content\"), valueIsBorderBox, styles, // Provide the current computed size to request scroll gutter calculation (gh-3589)\n        val) + \"px\";\n    }\n    jQuery.extend({\n        // Add in style property hooks for overriding the default\n        // behavior of getting and setting a style property\n        cssHooks: {\n            opacity: {\n                get: function(elem, computed) {\n                    if (computed) {\n                        // We should always get a number back from opacity\n                        var ret = curCSS(elem, \"opacity\");\n                        return ret === \"\" ? \"1\" : ret;\n                    }\n                }\n            }\n        },\n        // Don't automatically add \"px\" to these possibly-unitless properties\n        cssNumber: {\n            animationIterationCount: true,\n            aspectRatio: true,\n            borderImageSlice: true,\n            columnCount: true,\n            flexGrow: true,\n            flexShrink: true,\n            fontWeight: true,\n            gridArea: true,\n            gridColumn: true,\n            gridColumnEnd: true,\n            gridColumnStart: true,\n            gridRow: true,\n            gridRowEnd: true,\n            gridRowStart: true,\n            lineHeight: true,\n            opacity: true,\n            order: true,\n            orphans: true,\n            scale: true,\n            widows: true,\n            zIndex: true,\n            zoom: true,\n            // SVG-related\n            fillOpacity: true,\n            floodOpacity: true,\n            stopOpacity: true,\n            strokeMiterlimit: true,\n            strokeOpacity: true\n        },\n        // Add in properties whose names you wish to fix before\n        // setting or getting the value\n        cssProps: {},\n        // Get and set the style property on a DOM Node\n        style: function(elem, name, value, extra) {\n            // Don't set styles on text and comment nodes\n            if (!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style) return;\n            // Make sure that we're working with the right name\n            var ret, type, hooks, origName = camelCase(name), isCustomProp = rcustomProp.test(name), style = elem.style;\n            // Make sure that we're working with the right name. We don't\n            // want to query the value if it is a CSS custom property\n            // since they are user-defined.\n            if (!isCustomProp) name = finalPropName(origName);\n            // Gets hook for the prefixed version, then unprefixed version\n            hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n            // Check if we're setting a value\n            if (value !== undefined) {\n                type = typeof value;\n                // Convert \"+=\" or \"-=\" to relative numbers (trac-7345)\n                if (type === \"string\" && (ret = rcssNum.exec(value)) && ret[1]) {\n                    value = adjustCSS(elem, name, ret);\n                    // Fixes bug trac-9237\n                    type = \"number\";\n                }\n                // Make sure that null and NaN values aren't set (trac-7116)\n                if (value == null || value !== value) return;\n                // If a number was passed in, add the unit (except for certain CSS properties)\n                // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append\n                // \"px\" to a few hardcoded values.\n                if (type === \"number\" && !isCustomProp) value += ret && ret[3] || (jQuery.cssNumber[origName] ? \"\" : \"px\");\n                // background-* props affect original clone's values\n                if (!support.clearCloneStyle && value === \"\" && name.indexOf(\"background\") === 0) style[name] = \"inherit\";\n                // If a hook was provided, use that value, otherwise just set the specified value\n                if (!hooks || !(\"set\" in hooks) || (value = hooks.set(elem, value, extra)) !== undefined) {\n                    if (isCustomProp) style.setProperty(name, value);\n                    else style[name] = value;\n                }\n            } else {\n                // If a hook was provided get the non-computed value from there\n                if (hooks && \"get\" in hooks && (ret = hooks.get(elem, false, extra)) !== undefined) return ret;\n                // Otherwise just get the value from the style object\n                return style[name];\n            }\n        },\n        css: function(elem, name, extra, styles) {\n            var val, num, hooks, origName = camelCase(name), isCustomProp = rcustomProp.test(name);\n            // Make sure that we're working with the right name. We don't\n            // want to modify the value if it is a CSS custom property\n            // since they are user-defined.\n            if (!isCustomProp) name = finalPropName(origName);\n            // Try prefixed name followed by the unprefixed name\n            hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n            // If a hook was provided get the computed value from there\n            if (hooks && \"get\" in hooks) val = hooks.get(elem, true, extra);\n            // Otherwise, if a way to get the computed value exists, use that\n            if (val === undefined) val = curCSS(elem, name, styles);\n            // Convert \"normal\" to computed value\n            if (val === \"normal\" && name in cssNormalTransform) val = cssNormalTransform[name];\n            // Make numeric if forced or a qualifier was provided and val looks numeric\n            if (extra === \"\" || extra) {\n                num = parseFloat(val);\n                return extra === true || isFinite(num) ? num || 0 : val;\n            }\n            return val;\n        }\n    });\n    jQuery.each([\n        \"height\",\n        \"width\"\n    ], function(_i, dimension) {\n        jQuery.cssHooks[dimension] = {\n            get: function(elem, computed, extra) {\n                if (computed) // Certain elements can have dimension info if we invisibly show them\n                // but it must have a current display style that would benefit\n                return rdisplayswap.test(jQuery.css(elem, \"display\")) && // Support: Safari 8+\n                // Table columns in Safari have non-zero offsetWidth & zero\n                // getBoundingClientRect().width unless display is changed.\n                // Support: IE <=11 only\n                // Running getBoundingClientRect on a disconnected node\n                // in IE throws an error.\n                (!elem.getClientRects().length || !elem.getBoundingClientRect().width) ? swap(elem, cssShow, function() {\n                    return getWidthOrHeight(elem, dimension, extra);\n                }) : getWidthOrHeight(elem, dimension, extra);\n            },\n            set: function(elem, value, extra) {\n                var matches, styles = getStyles(elem), // Only read styles.position if the test has a chance to fail\n                // to avoid forcing a reflow.\n                scrollboxSizeBuggy = !support.scrollboxSize() && styles.position === \"absolute\", // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)\n                boxSizingNeeded = scrollboxSizeBuggy || extra, isBorderBox = boxSizingNeeded && jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\", subtract = extra ? boxModelAdjustment(elem, dimension, extra, isBorderBox, styles) : 0;\n                // Account for unreliable border-box dimensions by comparing offset* to computed and\n                // faking a content-box to get border and padding (gh-3699)\n                if (isBorderBox && scrollboxSizeBuggy) subtract -= Math.ceil(elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] - parseFloat(styles[dimension]) - boxModelAdjustment(elem, dimension, \"border\", false, styles) - 0.5);\n                // Convert to pixels if value adjustment is needed\n                if (subtract && (matches = rcssNum.exec(value)) && (matches[3] || \"px\") !== \"px\") {\n                    elem.style[dimension] = value;\n                    value = jQuery.css(elem, dimension);\n                }\n                return setPositiveNumber(elem, value, subtract);\n            }\n        };\n    });\n    jQuery.cssHooks.marginLeft = addGetHookIf(support.reliableMarginLeft, function(elem, computed) {\n        if (computed) return (parseFloat(curCSS(elem, \"marginLeft\")) || elem.getBoundingClientRect().left - swap(elem, {\n            marginLeft: 0\n        }, function() {\n            return elem.getBoundingClientRect().left;\n        })) + \"px\";\n    });\n    // These hooks are used by animate to expand properties\n    jQuery.each({\n        margin: \"\",\n        padding: \"\",\n        border: \"Width\"\n    }, function(prefix, suffix) {\n        jQuery.cssHooks[prefix + suffix] = {\n            expand: function(value) {\n                var i = 0, expanded = {}, // Assumes a single number if not a string\n                parts = typeof value === \"string\" ? value.split(\" \") : [\n                    value\n                ];\n                for(; i < 4; i++)expanded[prefix + cssExpand[i] + suffix] = parts[i] || parts[i - 2] || parts[0];\n                return expanded;\n            }\n        };\n        if (prefix !== \"margin\") jQuery.cssHooks[prefix + suffix].set = setPositiveNumber;\n    });\n    jQuery.fn.extend({\n        css: function(name, value) {\n            return access(this, function(elem, name, value) {\n                var styles, len, map = {}, i = 0;\n                if (Array.isArray(name)) {\n                    styles = getStyles(elem);\n                    len = name.length;\n                    for(; i < len; i++)map[name[i]] = jQuery.css(elem, name[i], false, styles);\n                    return map;\n                }\n                return value !== undefined ? jQuery.style(elem, name, value) : jQuery.css(elem, name);\n            }, name, value, arguments.length > 1);\n        }\n    });\n    function Tween(elem, options, prop, end, easing) {\n        return new Tween.prototype.init(elem, options, prop, end, easing);\n    }\n    jQuery.Tween = Tween;\n    Tween.prototype = {\n        constructor: Tween,\n        init: function(elem, options, prop, end, easing, unit) {\n            this.elem = elem;\n            this.prop = prop;\n            this.easing = easing || jQuery.easing._default;\n            this.options = options;\n            this.start = this.now = this.cur();\n            this.end = end;\n            this.unit = unit || (jQuery.cssNumber[prop] ? \"\" : \"px\");\n        },\n        cur: function() {\n            var hooks = Tween.propHooks[this.prop];\n            return hooks && hooks.get ? hooks.get(this) : Tween.propHooks._default.get(this);\n        },\n        run: function(percent) {\n            var eased, hooks = Tween.propHooks[this.prop];\n            if (this.options.duration) this.pos = eased = jQuery.easing[this.easing](percent, this.options.duration * percent, 0, 1, this.options.duration);\n            else this.pos = eased = percent;\n            this.now = (this.end - this.start) * eased + this.start;\n            if (this.options.step) this.options.step.call(this.elem, this.now, this);\n            if (hooks && hooks.set) hooks.set(this);\n            else Tween.propHooks._default.set(this);\n            return this;\n        }\n    };\n    Tween.prototype.init.prototype = Tween.prototype;\n    Tween.propHooks = {\n        _default: {\n            get: function(tween) {\n                var result;\n                // Use a property on the element directly when it is not a DOM element,\n                // or when there is no matching style property that exists.\n                if (tween.elem.nodeType !== 1 || tween.elem[tween.prop] != null && tween.elem.style[tween.prop] == null) return tween.elem[tween.prop];\n                // Passing an empty string as a 3rd parameter to .css will automatically\n                // attempt a parseFloat and fallback to a string if the parse fails.\n                // Simple values such as \"10px\" are parsed to Float;\n                // complex values such as \"rotate(1rad)\" are returned as-is.\n                result = jQuery.css(tween.elem, tween.prop, \"\");\n                // Empty strings, null, undefined and \"auto\" are converted to 0.\n                return !result || result === \"auto\" ? 0 : result;\n            },\n            set: function(tween) {\n                // Use step hook for back compat.\n                // Use cssHook if its there.\n                // Use .style if available and use plain properties where available.\n                if (jQuery.fx.step[tween.prop]) jQuery.fx.step[tween.prop](tween);\n                else if (tween.elem.nodeType === 1 && (jQuery.cssHooks[tween.prop] || tween.elem.style[finalPropName(tween.prop)] != null)) jQuery.style(tween.elem, tween.prop, tween.now + tween.unit);\n                else tween.elem[tween.prop] = tween.now;\n            }\n        }\n    };\n    // Support: IE <=9 only\n    // Panic based approach to setting things on disconnected nodes\n    Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {\n        set: function(tween) {\n            if (tween.elem.nodeType && tween.elem.parentNode) tween.elem[tween.prop] = tween.now;\n        }\n    };\n    jQuery.easing = {\n        linear: function(p) {\n            return p;\n        },\n        swing: function(p) {\n            return 0.5 - Math.cos(p * Math.PI) / 2;\n        },\n        _default: \"swing\"\n    };\n    jQuery.fx = Tween.prototype.init;\n    // Back compat <1.8 extension point\n    jQuery.fx.step = {};\n    var fxNow, inProgress, rfxtypes = /^(?:toggle|show|hide)$/, rrun = /queueHooks$/;\n    function schedule() {\n        if (inProgress) {\n            if (document.hidden === false && window1.requestAnimationFrame) window1.requestAnimationFrame(schedule);\n            else window1.setTimeout(schedule, jQuery.fx.interval);\n            jQuery.fx.tick();\n        }\n    }\n    // Animations created synchronously will run synchronously\n    function createFxNow() {\n        window1.setTimeout(function() {\n            fxNow = undefined;\n        });\n        return fxNow = Date.now();\n    }\n    // Generate parameters to create a standard animation\n    function genFx(type, includeWidth) {\n        var which, i = 0, attrs = {\n            height: type\n        };\n        // If we include width, step value is 1 to do all cssExpand values,\n        // otherwise step value is 2 to skip over Left and Right\n        includeWidth = includeWidth ? 1 : 0;\n        for(; i < 4; i += 2 - includeWidth){\n            which = cssExpand[i];\n            attrs[\"margin\" + which] = attrs[\"padding\" + which] = type;\n        }\n        if (includeWidth) attrs.opacity = attrs.width = type;\n        return attrs;\n    }\n    function createTween(value, prop, animation) {\n        var tween, collection = (Animation.tweeners[prop] || []).concat(Animation.tweeners[\"*\"]), index = 0, length = collection.length;\n        for(; index < length; index++){\n            if (tween = collection[index].call(animation, prop, value)) // We're done with this property\n            return tween;\n        }\n    }\n    function defaultPrefilter(elem, props, opts) {\n        var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, isBox = \"width\" in props || \"height\" in props, anim = this, orig = {}, style = elem.style, hidden = elem.nodeType && isHiddenWithinTree(elem), dataShow = dataPriv.get(elem, \"fxshow\");\n        // Queue-skipping animations hijack the fx hooks\n        if (!opts.queue) {\n            hooks = jQuery._queueHooks(elem, \"fx\");\n            if (hooks.unqueued == null) {\n                hooks.unqueued = 0;\n                oldfire = hooks.empty.fire;\n                hooks.empty.fire = function() {\n                    if (!hooks.unqueued) oldfire();\n                };\n            }\n            hooks.unqueued++;\n            anim.always(function() {\n                // Ensure the complete handler is called before this completes\n                anim.always(function() {\n                    hooks.unqueued--;\n                    if (!jQuery.queue(elem, \"fx\").length) hooks.empty.fire();\n                });\n            });\n        }\n        // Detect show/hide animations\n        for(prop in props){\n            value = props[prop];\n            if (rfxtypes.test(value)) {\n                delete props[prop];\n                toggle = toggle || value === \"toggle\";\n                if (value === (hidden ? \"hide\" : \"show\")) {\n                    // Pretend to be hidden if this is a \"show\" and\n                    // there is still data from a stopped show/hide\n                    if (value === \"show\" && dataShow && dataShow[prop] !== undefined) hidden = true;\n                    else continue;\n                }\n                orig[prop] = dataShow && dataShow[prop] || jQuery.style(elem, prop);\n            }\n        }\n        // Bail out if this is a no-op like .hide().hide()\n        propTween = !jQuery.isEmptyObject(props);\n        if (!propTween && jQuery.isEmptyObject(orig)) return;\n        // Restrict \"overflow\" and \"display\" styles during box animations\n        if (isBox && elem.nodeType === 1) {\n            // Support: IE <=9 - 11, Edge 12 - 15\n            // Record all 3 overflow attributes because IE does not infer the shorthand\n            // from identically-valued overflowX and overflowY and Edge just mirrors\n            // the overflowX value there.\n            opts.overflow = [\n                style.overflow,\n                style.overflowX,\n                style.overflowY\n            ];\n            // Identify a display type, preferring old show/hide data over the CSS cascade\n            restoreDisplay = dataShow && dataShow.display;\n            if (restoreDisplay == null) restoreDisplay = dataPriv.get(elem, \"display\");\n            display = jQuery.css(elem, \"display\");\n            if (display === \"none\") {\n                if (restoreDisplay) display = restoreDisplay;\n                else {\n                    // Get nonempty value(s) by temporarily forcing visibility\n                    showHide([\n                        elem\n                    ], true);\n                    restoreDisplay = elem.style.display || restoreDisplay;\n                    display = jQuery.css(elem, \"display\");\n                    showHide([\n                        elem\n                    ]);\n                }\n            }\n            // Animate inline elements as inline-block\n            if (display === \"inline\" || display === \"inline-block\" && restoreDisplay != null) {\n                if (jQuery.css(elem, \"float\") === \"none\") {\n                    // Restore the original display value at the end of pure show/hide animations\n                    if (!propTween) {\n                        anim.done(function() {\n                            style.display = restoreDisplay;\n                        });\n                        if (restoreDisplay == null) {\n                            display = style.display;\n                            restoreDisplay = display === \"none\" ? \"\" : display;\n                        }\n                    }\n                    style.display = \"inline-block\";\n                }\n            }\n        }\n        if (opts.overflow) {\n            style.overflow = \"hidden\";\n            anim.always(function() {\n                style.overflow = opts.overflow[0];\n                style.overflowX = opts.overflow[1];\n                style.overflowY = opts.overflow[2];\n            });\n        }\n        // Implement show/hide animations\n        propTween = false;\n        for(prop in orig){\n            // General show/hide setup for this element animation\n            if (!propTween) {\n                if (dataShow) {\n                    if (\"hidden\" in dataShow) hidden = dataShow.hidden;\n                } else dataShow = dataPriv.access(elem, \"fxshow\", {\n                    display: restoreDisplay\n                });\n                // Store hidden/visible for toggle so `.stop().toggle()` \"reverses\"\n                if (toggle) dataShow.hidden = !hidden;\n                // Show elements before animating them\n                if (hidden) showHide([\n                    elem\n                ], true);\n                /* eslint-disable no-loop-func */ anim.done(function() {\n                    /* eslint-enable no-loop-func */ // The final step of a \"hide\" animation is actually hiding the element\n                    if (!hidden) showHide([\n                        elem\n                    ]);\n                    dataPriv.remove(elem, \"fxshow\");\n                    for(prop in orig)jQuery.style(elem, prop, orig[prop]);\n                });\n            }\n            // Per-property setup\n            propTween = createTween(hidden ? dataShow[prop] : 0, prop, anim);\n            if (!(prop in dataShow)) {\n                dataShow[prop] = propTween.start;\n                if (hidden) {\n                    propTween.end = propTween.start;\n                    propTween.start = 0;\n                }\n            }\n        }\n    }\n    function propFilter(props, specialEasing) {\n        var index, name, easing, value, hooks;\n        // camelCase, specialEasing and expand cssHook pass\n        for(index in props){\n            name = camelCase(index);\n            easing = specialEasing[name];\n            value = props[index];\n            if (Array.isArray(value)) {\n                easing = value[1];\n                value = props[index] = value[0];\n            }\n            if (index !== name) {\n                props[name] = value;\n                delete props[index];\n            }\n            hooks = jQuery.cssHooks[name];\n            if (hooks && \"expand\" in hooks) {\n                value = hooks.expand(value);\n                delete props[name];\n                // Not quite $.extend, this won't overwrite existing keys.\n                // Reusing 'index' because we have the correct \"name\"\n                for(index in value)if (!(index in props)) {\n                    props[index] = value[index];\n                    specialEasing[index] = easing;\n                }\n            } else specialEasing[name] = easing;\n        }\n    }\n    function Animation(elem, properties, options) {\n        var result, stopped, index = 0, length = Animation.prefilters.length, deferred = jQuery.Deferred().always(function() {\n            // Don't match elem in the :animated selector\n            delete tick.elem;\n        }), tick = function() {\n            if (stopped) return false;\n            var currentTime = fxNow || createFxNow(), remaining = Math.max(0, animation.startTime + animation.duration - currentTime), // Support: Android 2.3 only\n            // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (trac-12497)\n            temp = remaining / animation.duration || 0, percent = 1 - temp, index = 0, length = animation.tweens.length;\n            for(; index < length; index++)animation.tweens[index].run(percent);\n            deferred.notifyWith(elem, [\n                animation,\n                percent,\n                remaining\n            ]);\n            // If there's more to do, yield\n            if (percent < 1 && length) return remaining;\n            // If this was an empty animation, synthesize a final progress notification\n            if (!length) deferred.notifyWith(elem, [\n                animation,\n                1,\n                0\n            ]);\n            // Resolve the animation and report its conclusion\n            deferred.resolveWith(elem, [\n                animation\n            ]);\n            return false;\n        }, animation = deferred.promise({\n            elem: elem,\n            props: jQuery.extend({}, properties),\n            opts: jQuery.extend(true, {\n                specialEasing: {},\n                easing: jQuery.easing._default\n            }, options),\n            originalProperties: properties,\n            originalOptions: options,\n            startTime: fxNow || createFxNow(),\n            duration: options.duration,\n            tweens: [],\n            createTween: function(prop, end) {\n                var tween = jQuery.Tween(elem, animation.opts, prop, end, animation.opts.specialEasing[prop] || animation.opts.easing);\n                animation.tweens.push(tween);\n                return tween;\n            },\n            stop: function(gotoEnd) {\n                var index = 0, // If we are going to the end, we want to run all the tweens\n                // otherwise we skip this part\n                length = gotoEnd ? animation.tweens.length : 0;\n                if (stopped) return this;\n                stopped = true;\n                for(; index < length; index++)animation.tweens[index].run(1);\n                // Resolve when we played the last frame; otherwise, reject\n                if (gotoEnd) {\n                    deferred.notifyWith(elem, [\n                        animation,\n                        1,\n                        0\n                    ]);\n                    deferred.resolveWith(elem, [\n                        animation,\n                        gotoEnd\n                    ]);\n                } else deferred.rejectWith(elem, [\n                    animation,\n                    gotoEnd\n                ]);\n                return this;\n            }\n        }), props = animation.props;\n        propFilter(props, animation.opts.specialEasing);\n        for(; index < length; index++){\n            result = Animation.prefilters[index].call(animation, elem, props, animation.opts);\n            if (result) {\n                if (isFunction(result.stop)) jQuery._queueHooks(animation.elem, animation.opts.queue).stop = result.stop.bind(result);\n                return result;\n            }\n        }\n        jQuery.map(props, createTween, animation);\n        if (isFunction(animation.opts.start)) animation.opts.start.call(elem, animation);\n        // Attach callbacks from options\n        animation.progress(animation.opts.progress).done(animation.opts.done, animation.opts.complete).fail(animation.opts.fail).always(animation.opts.always);\n        jQuery.fx.timer(jQuery.extend(tick, {\n            elem: elem,\n            anim: animation,\n            queue: animation.opts.queue\n        }));\n        return animation;\n    }\n    jQuery.Animation = jQuery.extend(Animation, {\n        tweeners: {\n            \"*\": [\n                function(prop, value) {\n                    var tween = this.createTween(prop, value);\n                    adjustCSS(tween.elem, prop, rcssNum.exec(value), tween);\n                    return tween;\n                }\n            ]\n        },\n        tweener: function(props, callback) {\n            if (isFunction(props)) {\n                callback = props;\n                props = [\n                    \"*\"\n                ];\n            } else props = props.match(rnothtmlwhite);\n            var prop, index = 0, length = props.length;\n            for(; index < length; index++){\n                prop = props[index];\n                Animation.tweeners[prop] = Animation.tweeners[prop] || [];\n                Animation.tweeners[prop].unshift(callback);\n            }\n        },\n        prefilters: [\n            defaultPrefilter\n        ],\n        prefilter: function(callback, prepend) {\n            if (prepend) Animation.prefilters.unshift(callback);\n            else Animation.prefilters.push(callback);\n        }\n    });\n    jQuery.speed = function(speed, easing, fn) {\n        var opt = speed && typeof speed === \"object\" ? jQuery.extend({}, speed) : {\n            complete: fn || !fn && easing || isFunction(speed) && speed,\n            duration: speed,\n            easing: fn && easing || easing && !isFunction(easing) && easing\n        };\n        // Go to the end state if fx are off\n        if (jQuery.fx.off) opt.duration = 0;\n        else if (typeof opt.duration !== \"number\") {\n            if (opt.duration in jQuery.fx.speeds) opt.duration = jQuery.fx.speeds[opt.duration];\n            else opt.duration = jQuery.fx.speeds._default;\n        }\n        // Normalize opt.queue - true/undefined/null -> \"fx\"\n        if (opt.queue == null || opt.queue === true) opt.queue = \"fx\";\n        // Queueing\n        opt.old = opt.complete;\n        opt.complete = function() {\n            if (isFunction(opt.old)) opt.old.call(this);\n            if (opt.queue) jQuery.dequeue(this, opt.queue);\n        };\n        return opt;\n    };\n    jQuery.fn.extend({\n        fadeTo: function(speed, to, easing, callback) {\n            // Show any hidden elements after setting opacity to 0\n            return this.filter(isHiddenWithinTree).css(\"opacity\", 0).show()// Animate to the value specified\n            .end().animate({\n                opacity: to\n            }, speed, easing, callback);\n        },\n        animate: function(prop, speed, easing, callback) {\n            var empty = jQuery.isEmptyObject(prop), optall = jQuery.speed(speed, easing, callback), doAnimation = function() {\n                // Operate on a copy of prop so per-property easing won't be lost\n                var anim = Animation(this, jQuery.extend({}, prop), optall);\n                // Empty animations, or finishing resolves immediately\n                if (empty || dataPriv.get(this, \"finish\")) anim.stop(true);\n            };\n            doAnimation.finish = doAnimation;\n            return empty || optall.queue === false ? this.each(doAnimation) : this.queue(optall.queue, doAnimation);\n        },\n        stop: function(type, clearQueue, gotoEnd) {\n            var stopQueue = function(hooks) {\n                var stop = hooks.stop;\n                delete hooks.stop;\n                stop(gotoEnd);\n            };\n            if (typeof type !== \"string\") {\n                gotoEnd = clearQueue;\n                clearQueue = type;\n                type = undefined;\n            }\n            if (clearQueue) this.queue(type || \"fx\", []);\n            return this.each(function() {\n                var dequeue = true, index = type != null && type + \"queueHooks\", timers = jQuery.timers, data = dataPriv.get(this);\n                if (index) {\n                    if (data[index] && data[index].stop) stopQueue(data[index]);\n                } else {\n                    for(index in data)if (data[index] && data[index].stop && rrun.test(index)) stopQueue(data[index]);\n                }\n                for(index = timers.length; index--;)if (timers[index].elem === this && (type == null || timers[index].queue === type)) {\n                    timers[index].anim.stop(gotoEnd);\n                    dequeue = false;\n                    timers.splice(index, 1);\n                }\n                // Start the next in the queue if the last step wasn't forced.\n                // Timers currently will call their complete callbacks, which\n                // will dequeue but only if they were gotoEnd.\n                if (dequeue || !gotoEnd) jQuery.dequeue(this, type);\n            });\n        },\n        finish: function(type) {\n            if (type !== false) type = type || \"fx\";\n            return this.each(function() {\n                var index, data = dataPriv.get(this), queue = data[type + \"queue\"], hooks = data[type + \"queueHooks\"], timers = jQuery.timers, length = queue ? queue.length : 0;\n                // Enable finishing flag on private data\n                data.finish = true;\n                // Empty the queue first\n                jQuery.queue(this, type, []);\n                if (hooks && hooks.stop) hooks.stop.call(this, true);\n                // Look for any active animations, and finish them\n                for(index = timers.length; index--;)if (timers[index].elem === this && timers[index].queue === type) {\n                    timers[index].anim.stop(true);\n                    timers.splice(index, 1);\n                }\n                // Look for any animations in the old queue and finish them\n                for(index = 0; index < length; index++)if (queue[index] && queue[index].finish) queue[index].finish.call(this);\n                // Turn off finishing flag\n                delete data.finish;\n            });\n        }\n    });\n    jQuery.each([\n        \"toggle\",\n        \"show\",\n        \"hide\"\n    ], function(_i, name) {\n        var cssFn = jQuery.fn[name];\n        jQuery.fn[name] = function(speed, easing, callback) {\n            return speed == null || typeof speed === \"boolean\" ? cssFn.apply(this, arguments) : this.animate(genFx(name, true), speed, easing, callback);\n        };\n    });\n    // Generate shortcuts for custom animations\n    jQuery.each({\n        slideDown: genFx(\"show\"),\n        slideUp: genFx(\"hide\"),\n        slideToggle: genFx(\"toggle\"),\n        fadeIn: {\n            opacity: \"show\"\n        },\n        fadeOut: {\n            opacity: \"hide\"\n        },\n        fadeToggle: {\n            opacity: \"toggle\"\n        }\n    }, function(name, props) {\n        jQuery.fn[name] = function(speed, easing, callback) {\n            return this.animate(props, speed, easing, callback);\n        };\n    });\n    jQuery.timers = [];\n    jQuery.fx.tick = function() {\n        var timer, i = 0, timers = jQuery.timers;\n        fxNow = Date.now();\n        for(; i < timers.length; i++){\n            timer = timers[i];\n            // Run the timer and safely remove it when done (allowing for external removal)\n            if (!timer() && timers[i] === timer) timers.splice(i--, 1);\n        }\n        if (!timers.length) jQuery.fx.stop();\n        fxNow = undefined;\n    };\n    jQuery.fx.timer = function(timer) {\n        jQuery.timers.push(timer);\n        jQuery.fx.start();\n    };\n    jQuery.fx.interval = 13;\n    jQuery.fx.start = function() {\n        if (inProgress) return;\n        inProgress = true;\n        schedule();\n    };\n    jQuery.fx.stop = function() {\n        inProgress = null;\n    };\n    jQuery.fx.speeds = {\n        slow: 600,\n        fast: 200,\n        // Default speed\n        _default: 400\n    };\n    // Based off of the plugin by Clint Helfers, with permission.\n    jQuery.fn.delay = function(time, type) {\n        time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;\n        type = type || \"fx\";\n        return this.queue(type, function(next, hooks) {\n            var timeout = window1.setTimeout(next, time);\n            hooks.stop = function() {\n                window1.clearTimeout(timeout);\n            };\n        });\n    };\n    (function() {\n        var input = document.createElement(\"input\"), select = document.createElement(\"select\"), opt = select.appendChild(document.createElement(\"option\"));\n        input.type = \"checkbox\";\n        // Support: Android <=4.3 only\n        // Default value for a checkbox should be \"on\"\n        support.checkOn = input.value !== \"\";\n        // Support: IE <=11 only\n        // Must access selectedIndex to make default options select\n        support.optSelected = opt.selected;\n        // Support: IE <=11 only\n        // An input loses its value after becoming a radio\n        input = document.createElement(\"input\");\n        input.value = \"t\";\n        input.type = \"radio\";\n        support.radioValue = input.value === \"t\";\n    })();\n    var boolHook, attrHandle = jQuery.expr.attrHandle;\n    jQuery.fn.extend({\n        attr: function(name, value) {\n            return access(this, jQuery.attr, name, value, arguments.length > 1);\n        },\n        removeAttr: function(name) {\n            return this.each(function() {\n                jQuery.removeAttr(this, name);\n            });\n        }\n    });\n    jQuery.extend({\n        attr: function(elem, name, value) {\n            var ret, hooks, nType = elem.nodeType;\n            // Don't get/set attributes on text, comment and attribute nodes\n            if (nType === 3 || nType === 8 || nType === 2) return;\n            // Fallback to prop when attributes are not supported\n            if (typeof elem.getAttribute === \"undefined\") return jQuery.prop(elem, name, value);\n            // Attribute hooks are determined by the lowercase version\n            // Grab necessary hook if one is defined\n            if (nType !== 1 || !jQuery.isXMLDoc(elem)) hooks = jQuery.attrHooks[name.toLowerCase()] || (jQuery.expr.match.bool.test(name) ? boolHook : undefined);\n            if (value !== undefined) {\n                if (value === null) {\n                    jQuery.removeAttr(elem, name);\n                    return;\n                }\n                if (hooks && \"set\" in hooks && (ret = hooks.set(elem, value, name)) !== undefined) return ret;\n                elem.setAttribute(name, value + \"\");\n                return value;\n            }\n            if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) return ret;\n            ret = jQuery.find.attr(elem, name);\n            // Non-existent attributes return null, we normalize to undefined\n            return ret == null ? undefined : ret;\n        },\n        attrHooks: {\n            type: {\n                set: function(elem, value) {\n                    if (!support.radioValue && value === \"radio\" && nodeName(elem, \"input\")) {\n                        var val = elem.value;\n                        elem.setAttribute(\"type\", value);\n                        if (val) elem.value = val;\n                        return value;\n                    }\n                }\n            }\n        },\n        removeAttr: function(elem, value) {\n            var name, i = 0, // Attribute names can contain non-HTML whitespace characters\n            // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n            attrNames = value && value.match(rnothtmlwhite);\n            if (attrNames && elem.nodeType === 1) while(name = attrNames[i++])elem.removeAttribute(name);\n        }\n    });\n    // Hooks for boolean attributes\n    boolHook = {\n        set: function(elem, value, name) {\n            if (value === false) // Remove boolean attributes when set to false\n            jQuery.removeAttr(elem, name);\n            else elem.setAttribute(name, name);\n            return name;\n        }\n    };\n    jQuery.each(jQuery.expr.match.bool.source.match(/\\w+/g), function(_i, name) {\n        var getter = attrHandle[name] || jQuery.find.attr;\n        attrHandle[name] = function(elem, name, isXML) {\n            var ret, handle, lowercaseName = name.toLowerCase();\n            if (!isXML) {\n                // Avoid an infinite loop by temporarily removing this function from the getter\n                handle = attrHandle[lowercaseName];\n                attrHandle[lowercaseName] = ret;\n                ret = getter(elem, name, isXML) != null ? lowercaseName : null;\n                attrHandle[lowercaseName] = handle;\n            }\n            return ret;\n        };\n    });\n    var rfocusable = /^(?:input|select|textarea|button)$/i, rclickable = /^(?:a|area)$/i;\n    jQuery.fn.extend({\n        prop: function(name, value) {\n            return access(this, jQuery.prop, name, value, arguments.length > 1);\n        },\n        removeProp: function(name) {\n            return this.each(function() {\n                delete this[jQuery.propFix[name] || name];\n            });\n        }\n    });\n    jQuery.extend({\n        prop: function(elem, name, value) {\n            var ret, hooks, nType = elem.nodeType;\n            // Don't get/set properties on text, comment and attribute nodes\n            if (nType === 3 || nType === 8 || nType === 2) return;\n            if (nType !== 1 || !jQuery.isXMLDoc(elem)) {\n                // Fix name and attach hooks\n                name = jQuery.propFix[name] || name;\n                hooks = jQuery.propHooks[name];\n            }\n            if (value !== undefined) {\n                if (hooks && \"set\" in hooks && (ret = hooks.set(elem, value, name)) !== undefined) return ret;\n                return elem[name] = value;\n            }\n            if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) return ret;\n            return elem[name];\n        },\n        propHooks: {\n            tabIndex: {\n                get: function(elem) {\n                    // Support: IE <=9 - 11 only\n                    // elem.tabIndex doesn't always return the\n                    // correct value when it hasn't been explicitly set\n                    // Use proper attribute retrieval (trac-12072)\n                    var tabindex = jQuery.find.attr(elem, \"tabindex\");\n                    if (tabindex) return parseInt(tabindex, 10);\n                    if (rfocusable.test(elem.nodeName) || rclickable.test(elem.nodeName) && elem.href) return 0;\n                    return -1;\n                }\n            }\n        },\n        propFix: {\n            \"for\": \"htmlFor\",\n            \"class\": \"className\"\n        }\n    });\n    // Support: IE <=11 only\n    // Accessing the selectedIndex property\n    // forces the browser to respect setting selected\n    // on the option\n    // The getter ensures a default option is selected\n    // when in an optgroup\n    // eslint rule \"no-unused-expressions\" is disabled for this code\n    // since it considers such accessions noop\n    if (!support.optSelected) jQuery.propHooks.selected = {\n        get: function(elem) {\n            /* eslint no-unused-expressions: \"off\" */ var parent = elem.parentNode;\n            if (parent && parent.parentNode) parent.parentNode.selectedIndex;\n            return null;\n        },\n        set: function(elem) {\n            /* eslint no-unused-expressions: \"off\" */ var parent = elem.parentNode;\n            if (parent) {\n                parent.selectedIndex;\n                if (parent.parentNode) parent.parentNode.selectedIndex;\n            }\n        }\n    };\n    jQuery.each([\n        \"tabIndex\",\n        \"readOnly\",\n        \"maxLength\",\n        \"cellSpacing\",\n        \"cellPadding\",\n        \"rowSpan\",\n        \"colSpan\",\n        \"useMap\",\n        \"frameBorder\",\n        \"contentEditable\"\n    ], function() {\n        jQuery.propFix[this.toLowerCase()] = this;\n    });\n    // Strip and collapse whitespace according to HTML spec\n    // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\n    function stripAndCollapse(value) {\n        var tokens = value.match(rnothtmlwhite) || [];\n        return tokens.join(\" \");\n    }\n    function getClass(elem) {\n        return elem.getAttribute && elem.getAttribute(\"class\") || \"\";\n    }\n    function classesToArray(value) {\n        if (Array.isArray(value)) return value;\n        if (typeof value === \"string\") return value.match(rnothtmlwhite) || [];\n        return [];\n    }\n    jQuery.fn.extend({\n        addClass: function(value) {\n            var classNames, cur, curValue, className, i, finalValue;\n            if (isFunction(value)) return this.each(function(j) {\n                jQuery(this).addClass(value.call(this, j, getClass(this)));\n            });\n            classNames = classesToArray(value);\n            if (classNames.length) return this.each(function() {\n                curValue = getClass(this);\n                cur = this.nodeType === 1 && \" \" + stripAndCollapse(curValue) + \" \";\n                if (cur) {\n                    for(i = 0; i < classNames.length; i++){\n                        className = classNames[i];\n                        if (cur.indexOf(\" \" + className + \" \") < 0) cur += className + \" \";\n                    }\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) this.setAttribute(\"class\", finalValue);\n                }\n            });\n            return this;\n        },\n        removeClass: function(value) {\n            var classNames, cur, curValue, className, i, finalValue;\n            if (isFunction(value)) return this.each(function(j) {\n                jQuery(this).removeClass(value.call(this, j, getClass(this)));\n            });\n            if (!arguments.length) return this.attr(\"class\", \"\");\n            classNames = classesToArray(value);\n            if (classNames.length) return this.each(function() {\n                curValue = getClass(this);\n                // This expression is here for better compressibility (see addClass)\n                cur = this.nodeType === 1 && \" \" + stripAndCollapse(curValue) + \" \";\n                if (cur) {\n                    for(i = 0; i < classNames.length; i++){\n                        className = classNames[i];\n                        // Remove *all* instances\n                        while(cur.indexOf(\" \" + className + \" \") > -1)cur = cur.replace(\" \" + className + \" \", \" \");\n                    }\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) this.setAttribute(\"class\", finalValue);\n                }\n            });\n            return this;\n        },\n        toggleClass: function(value, stateVal) {\n            var classNames, className, i, self, type = typeof value, isValidValue = type === \"string\" || Array.isArray(value);\n            if (isFunction(value)) return this.each(function(i) {\n                jQuery(this).toggleClass(value.call(this, i, getClass(this), stateVal), stateVal);\n            });\n            if (typeof stateVal === \"boolean\" && isValidValue) return stateVal ? this.addClass(value) : this.removeClass(value);\n            classNames = classesToArray(value);\n            return this.each(function() {\n                if (isValidValue) {\n                    // Toggle individual class names\n                    self = jQuery(this);\n                    for(i = 0; i < classNames.length; i++){\n                        className = classNames[i];\n                        // Check each className given, space separated list\n                        if (self.hasClass(className)) self.removeClass(className);\n                        else self.addClass(className);\n                    }\n                // Toggle whole class name\n                } else if (value === undefined || type === \"boolean\") {\n                    className = getClass(this);\n                    if (className) // Store className if set\n                    dataPriv.set(this, \"__className__\", className);\n                    // If the element has a class name or if we're passed `false`,\n                    // then remove the whole classname (if there was one, the above saved it).\n                    // Otherwise bring back whatever was previously saved (if anything),\n                    // falling back to the empty string if nothing was stored.\n                    if (this.setAttribute) this.setAttribute(\"class\", className || value === false ? \"\" : dataPriv.get(this, \"__className__\") || \"\");\n                }\n            });\n        },\n        hasClass: function(selector) {\n            var className, elem, i = 0;\n            className = \" \" + selector + \" \";\n            while(elem = this[i++]){\n                if (elem.nodeType === 1 && (\" \" + stripAndCollapse(getClass(elem)) + \" \").indexOf(className) > -1) return true;\n            }\n            return false;\n        }\n    });\n    var rreturn = /\\r/g;\n    jQuery.fn.extend({\n        val: function(value) {\n            var hooks, ret, valueIsFunction, elem = this[0];\n            if (!arguments.length) {\n                if (elem) {\n                    hooks = jQuery.valHooks[elem.type] || jQuery.valHooks[elem.nodeName.toLowerCase()];\n                    if (hooks && \"get\" in hooks && (ret = hooks.get(elem, \"value\")) !== undefined) return ret;\n                    ret = elem.value;\n                    // Handle most common string cases\n                    if (typeof ret === \"string\") return ret.replace(rreturn, \"\");\n                    // Handle cases where value is null/undef or number\n                    return ret == null ? \"\" : ret;\n                }\n                return;\n            }\n            valueIsFunction = isFunction(value);\n            return this.each(function(i) {\n                var val;\n                if (this.nodeType !== 1) return;\n                if (valueIsFunction) val = value.call(this, i, jQuery(this).val());\n                else val = value;\n                // Treat null/undefined as \"\"; convert numbers to string\n                if (val == null) val = \"\";\n                else if (typeof val === \"number\") val += \"\";\n                else if (Array.isArray(val)) val = jQuery.map(val, function(value) {\n                    return value == null ? \"\" : value + \"\";\n                });\n                hooks = jQuery.valHooks[this.type] || jQuery.valHooks[this.nodeName.toLowerCase()];\n                // If set returns undefined, fall back to normal setting\n                if (!hooks || !(\"set\" in hooks) || hooks.set(this, val, \"value\") === undefined) this.value = val;\n            });\n        }\n    });\n    jQuery.extend({\n        valHooks: {\n            option: {\n                get: function(elem) {\n                    var val = jQuery.find.attr(elem, \"value\");\n                    return val != null ? val : // Support: IE <=10 - 11 only\n                    // option.text throws exceptions (trac-14686, trac-14858)\n                    // Strip and collapse whitespace\n                    // https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n                    stripAndCollapse(jQuery.text(elem));\n                }\n            },\n            select: {\n                get: function(elem) {\n                    var value, option, i, options = elem.options, index = elem.selectedIndex, one = elem.type === \"select-one\", values = one ? null : [], max = one ? index + 1 : options.length;\n                    if (index < 0) i = max;\n                    else i = one ? index : 0;\n                    // Loop through all the selected options\n                    for(; i < max; i++){\n                        option = options[i];\n                        // Support: IE <=9 only\n                        // IE8-9 doesn't update selected after form reset (trac-2551)\n                        if ((option.selected || i === index) && // Don't return options that are disabled or in a disabled optgroup\n                        !option.disabled && (!option.parentNode.disabled || !nodeName(option.parentNode, \"optgroup\"))) {\n                            // Get the specific value for the option\n                            value = jQuery(option).val();\n                            // We don't need an array for one selects\n                            if (one) return value;\n                            // Multi-Selects return an array\n                            values.push(value);\n                        }\n                    }\n                    return values;\n                },\n                set: function(elem, value) {\n                    var optionSet, option, options = elem.options, values = jQuery.makeArray(value), i = options.length;\n                    while(i--){\n                        option = options[i];\n                        /* eslint-disable no-cond-assign */ if (option.selected = jQuery.inArray(jQuery.valHooks.option.get(option), values) > -1) optionSet = true;\n                    /* eslint-enable no-cond-assign */ }\n                    // Force browsers to behave consistently when non-matching value is set\n                    if (!optionSet) elem.selectedIndex = -1;\n                    return values;\n                }\n            }\n        }\n    });\n    // Radios and checkboxes getter/setter\n    jQuery.each([\n        \"radio\",\n        \"checkbox\"\n    ], function() {\n        jQuery.valHooks[this] = {\n            set: function(elem, value) {\n                if (Array.isArray(value)) return elem.checked = jQuery.inArray(jQuery(elem).val(), value) > -1;\n            }\n        };\n        if (!support.checkOn) jQuery.valHooks[this].get = function(elem) {\n            return elem.getAttribute(\"value\") === null ? \"on\" : elem.value;\n        };\n    });\n    // Return jQuery for attributes-only inclusion\n    var location = window1.location;\n    var nonce = {\n        guid: Date.now()\n    };\n    var rquery = /\\?/;\n    // Cross-browser xml parsing\n    jQuery.parseXML = function(data) {\n        var xml, parserErrorElem;\n        if (!data || typeof data !== \"string\") return null;\n        // Support: IE 9 - 11 only\n        // IE throws on parseFromString with invalid input.\n        try {\n            xml = new window1.DOMParser().parseFromString(data, \"text/xml\");\n        } catch (e) {}\n        parserErrorElem = xml && xml.getElementsByTagName(\"parsererror\")[0];\n        if (!xml || parserErrorElem) jQuery.error(\"Invalid XML: \" + (parserErrorElem ? jQuery.map(parserErrorElem.childNodes, function(el) {\n            return el.textContent;\n        }).join(\"\\n\") : data));\n        return xml;\n    };\n    var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, stopPropagationCallback = function(e) {\n        e.stopPropagation();\n    };\n    jQuery.extend(jQuery.event, {\n        trigger: function(event, data, elem, onlyHandlers) {\n            var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, eventPath = [\n                elem || document\n            ], type = hasOwn.call(event, \"type\") ? event.type : event, namespaces = hasOwn.call(event, \"namespace\") ? event.namespace.split(\".\") : [];\n            cur = lastElement = tmp = elem = elem || document;\n            // Don't do events on text and comment nodes\n            if (elem.nodeType === 3 || elem.nodeType === 8) return;\n            // focus/blur morphs to focusin/out; ensure we're not firing them right now\n            if (rfocusMorph.test(type + jQuery.event.triggered)) return;\n            if (type.indexOf(\".\") > -1) {\n                // Namespaced trigger; create a regexp to match event type in handle()\n                namespaces = type.split(\".\");\n                type = namespaces.shift();\n                namespaces.sort();\n            }\n            ontype = type.indexOf(\":\") < 0 && \"on\" + type;\n            // Caller can pass in a jQuery.Event object, Object, or just an event type string\n            event = event[jQuery.expando] ? event : new jQuery.Event(type, typeof event === \"object\" && event);\n            // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n            event.isTrigger = onlyHandlers ? 2 : 3;\n            event.namespace = namespaces.join(\".\");\n            event.rnamespace = event.namespace ? new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\") : null;\n            // Clean up the event in case it is being reused\n            event.result = undefined;\n            if (!event.target) event.target = elem;\n            // Clone any incoming data and prepend the event, creating the handler arg list\n            data = data == null ? [\n                event\n            ] : jQuery.makeArray(data, [\n                event\n            ]);\n            // Allow special events to draw outside the lines\n            special = jQuery.event.special[type] || {};\n            if (!onlyHandlers && special.trigger && special.trigger.apply(elem, data) === false) return;\n            // Determine event propagation path in advance, per W3C events spec (trac-9951)\n            // Bubble up to document, then to window; watch for a global ownerDocument var (trac-9724)\n            if (!onlyHandlers && !special.noBubble && !isWindow(elem)) {\n                bubbleType = special.delegateType || type;\n                if (!rfocusMorph.test(bubbleType + type)) cur = cur.parentNode;\n                for(; cur; cur = cur.parentNode){\n                    eventPath.push(cur);\n                    tmp = cur;\n                }\n                // Only add window if we got to document (e.g., not plain obj or detached DOM)\n                if (tmp === (elem.ownerDocument || document)) eventPath.push(tmp.defaultView || tmp.parentWindow || window1);\n            }\n            // Fire handlers on the event path\n            i = 0;\n            while((cur = eventPath[i++]) && !event.isPropagationStopped()){\n                lastElement = cur;\n                event.type = i > 1 ? bubbleType : special.bindType || type;\n                // jQuery handler\n                handle = (dataPriv.get(cur, \"events\") || Object.create(null))[event.type] && dataPriv.get(cur, \"handle\");\n                if (handle) handle.apply(cur, data);\n                // Native handler\n                handle = ontype && cur[ontype];\n                if (handle && handle.apply && acceptData(cur)) {\n                    event.result = handle.apply(cur, data);\n                    if (event.result === false) event.preventDefault();\n                }\n            }\n            event.type = type;\n            // If nobody prevented the default action, do it now\n            if (!onlyHandlers && !event.isDefaultPrevented()) {\n                if ((!special._default || special._default.apply(eventPath.pop(), data) === false) && acceptData(elem)) // Call a native DOM method on the target with the same name as the event.\n                // Don't do default actions on window, that's where global variables be (trac-6170)\n                {\n                    if (ontype && isFunction(elem[type]) && !isWindow(elem)) {\n                        // Don't re-trigger an onFOO event when we call its FOO() method\n                        tmp = elem[ontype];\n                        if (tmp) elem[ontype] = null;\n                        // Prevent re-triggering of the same event, since we already bubbled it above\n                        jQuery.event.triggered = type;\n                        if (event.isPropagationStopped()) lastElement.addEventListener(type, stopPropagationCallback);\n                        elem[type]();\n                        if (event.isPropagationStopped()) lastElement.removeEventListener(type, stopPropagationCallback);\n                        jQuery.event.triggered = undefined;\n                        if (tmp) elem[ontype] = tmp;\n                    }\n                }\n            }\n            return event.result;\n        },\n        // Piggyback on a donor event to simulate a different one\n        // Used only for `focus(in | out)` events\n        simulate: function(type, elem, event) {\n            var e = jQuery.extend(new jQuery.Event(), event, {\n                type: type,\n                isSimulated: true\n            });\n            jQuery.event.trigger(e, null, elem);\n        }\n    });\n    jQuery.fn.extend({\n        trigger: function(type, data) {\n            return this.each(function() {\n                jQuery.event.trigger(type, data, this);\n            });\n        },\n        triggerHandler: function(type, data) {\n            var elem = this[0];\n            if (elem) return jQuery.event.trigger(type, data, elem, true);\n        }\n    });\n    var rbracket = /\\[\\]$/, rCRLF = /\\r?\\n/g, rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, rsubmittable = /^(?:input|select|textarea|keygen)/i;\n    function buildParams(prefix, obj, traditional, add) {\n        var name;\n        if (Array.isArray(obj)) // Serialize array item.\n        jQuery.each(obj, function(i, v) {\n            if (traditional || rbracket.test(prefix)) // Treat each array item as a scalar.\n            add(prefix, v);\n            else // Item is non-scalar (array or object), encode its numeric index.\n            buildParams(prefix + \"[\" + (typeof v === \"object\" && v != null ? i : \"\") + \"]\", v, traditional, add);\n        });\n        else if (!traditional && toType(obj) === \"object\") // Serialize object item.\n        for(name in obj)buildParams(prefix + \"[\" + name + \"]\", obj[name], traditional, add);\n        else // Serialize scalar item.\n        add(prefix, obj);\n    }\n    // Serialize an array of form elements or a set of\n    // key/values into a query string\n    jQuery.param = function(a, traditional) {\n        var prefix, s = [], add = function(key, valueOrFunction) {\n            // If value is a function, invoke it and use its return value\n            var value = isFunction(valueOrFunction) ? valueOrFunction() : valueOrFunction;\n            s[s.length] = encodeURIComponent(key) + \"=\" + encodeURIComponent(value == null ? \"\" : value);\n        };\n        if (a == null) return \"\";\n        // If an array was passed in, assume that it is an array of form elements.\n        if (Array.isArray(a) || a.jquery && !jQuery.isPlainObject(a)) // Serialize the form elements\n        jQuery.each(a, function() {\n            add(this.name, this.value);\n        });\n        else // If traditional, encode the \"old\" way (the way 1.3.2 or older\n        // did it), otherwise encode params recursively.\n        for(prefix in a)buildParams(prefix, a[prefix], traditional, add);\n        // Return the resulting serialization\n        return s.join(\"&\");\n    };\n    jQuery.fn.extend({\n        serialize: function() {\n            return jQuery.param(this.serializeArray());\n        },\n        serializeArray: function() {\n            return this.map(function() {\n                // Can add propHook for \"elements\" to filter or add form elements\n                var elements = jQuery.prop(this, \"elements\");\n                return elements ? jQuery.makeArray(elements) : this;\n            }).filter(function() {\n                var type = this.type;\n                // Use .is( \":disabled\" ) so that fieldset[disabled] works\n                return this.name && !jQuery(this).is(\":disabled\") && rsubmittable.test(this.nodeName) && !rsubmitterTypes.test(type) && (this.checked || !rcheckableType.test(type));\n            }).map(function(_i, elem) {\n                var val = jQuery(this).val();\n                if (val == null) return null;\n                if (Array.isArray(val)) return jQuery.map(val, function(val) {\n                    return {\n                        name: elem.name,\n                        value: val.replace(rCRLF, \"\\r\\n\")\n                    };\n                });\n                return {\n                    name: elem.name,\n                    value: val.replace(rCRLF, \"\\r\\n\")\n                };\n            }).get();\n        }\n    });\n    var r20 = /%20/g, rhash = /#.*$/, rantiCache = /([?&])_=[^&]*/, rheaders = /^(.*?):[ \\t]*([^\\r\\n]*)$/mg, // trac-7653, trac-8125, trac-8152: local protocol detection\n    rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, rnoContent = /^(?:GET|HEAD)$/, rprotocol = /^\\/\\//, /* Prefilters\n\t * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)\n\t * 2) These are called:\n\t *    - BEFORE asking for a transport\n\t *    - AFTER param serialization (s.data is a string if s.processData is true)\n\t * 3) key is the dataType\n\t * 4) the catchall symbol \"*\" can be used\n\t * 5) execution will start with transport dataType and THEN continue down to \"*\" if needed\n\t */ prefilters = {}, /* Transports bindings\n\t * 1) key is the dataType\n\t * 2) the catchall symbol \"*\" can be used\n\t * 3) selection will start with transport dataType and THEN go to \"*\" if needed\n\t */ transports = {}, // Avoid comment-prolog char sequence (trac-10098); must appease lint and evade compression\n    allTypes = \"*/\".concat(\"*\"), // Anchor tag for parsing the document origin\n    originAnchor = document.createElement(\"a\");\n    originAnchor.href = location.href;\n    // Base \"constructor\" for jQuery.ajaxPrefilter and jQuery.ajaxTransport\n    function addToPrefiltersOrTransports(structure) {\n        // dataTypeExpression is optional and defaults to \"*\"\n        return function(dataTypeExpression, func) {\n            if (typeof dataTypeExpression !== \"string\") {\n                func = dataTypeExpression;\n                dataTypeExpression = \"*\";\n            }\n            var dataType, i = 0, dataTypes = dataTypeExpression.toLowerCase().match(rnothtmlwhite) || [];\n            if (isFunction(func)) {\n                // For each dataType in the dataTypeExpression\n                while(dataType = dataTypes[i++])// Prepend if requested\n                if (dataType[0] === \"+\") {\n                    dataType = dataType.slice(1) || \"*\";\n                    (structure[dataType] = structure[dataType] || []).unshift(func);\n                // Otherwise append\n                } else (structure[dataType] = structure[dataType] || []).push(func);\n            }\n        };\n    }\n    // Base inspection function for prefilters and transports\n    function inspectPrefiltersOrTransports(structure, options, originalOptions, jqXHR) {\n        var inspected = {}, seekingTransport = structure === transports;\n        function inspect(dataType) {\n            var selected;\n            inspected[dataType] = true;\n            jQuery.each(structure[dataType] || [], function(_, prefilterOrFactory) {\n                var dataTypeOrTransport = prefilterOrFactory(options, originalOptions, jqXHR);\n                if (typeof dataTypeOrTransport === \"string\" && !seekingTransport && !inspected[dataTypeOrTransport]) {\n                    options.dataTypes.unshift(dataTypeOrTransport);\n                    inspect(dataTypeOrTransport);\n                    return false;\n                } else if (seekingTransport) return !(selected = dataTypeOrTransport);\n            });\n            return selected;\n        }\n        return inspect(options.dataTypes[0]) || !inspected[\"*\"] && inspect(\"*\");\n    }\n    // A special extend for ajax options\n    // that takes \"flat\" options (not to be deep extended)\n    // Fixes trac-9887\n    function ajaxExtend(target, src) {\n        var key, deep, flatOptions = jQuery.ajaxSettings.flatOptions || {};\n        for(key in src)if (src[key] !== undefined) (flatOptions[key] ? target : deep || (deep = {}))[key] = src[key];\n        if (deep) jQuery.extend(true, target, deep);\n        return target;\n    }\n    /* Handles responses to an ajax request:\n * - finds the right dataType (mediates between content-type and expected dataType)\n * - returns the corresponding response\n */ function ajaxHandleResponses(s, jqXHR, responses) {\n        var ct, type, finalDataType, firstDataType, contents = s.contents, dataTypes = s.dataTypes;\n        // Remove auto dataType and get content-type in the process\n        while(dataTypes[0] === \"*\"){\n            dataTypes.shift();\n            if (ct === undefined) ct = s.mimeType || jqXHR.getResponseHeader(\"Content-Type\");\n        }\n        // Check if we're dealing with a known content-type\n        if (ct) {\n            for(type in contents)if (contents[type] && contents[type].test(ct)) {\n                dataTypes.unshift(type);\n                break;\n            }\n        }\n        // Check to see if we have a response for the expected dataType\n        if (dataTypes[0] in responses) finalDataType = dataTypes[0];\n        else {\n            // Try convertible dataTypes\n            for(type in responses){\n                if (!dataTypes[0] || s.converters[type + \" \" + dataTypes[0]]) {\n                    finalDataType = type;\n                    break;\n                }\n                if (!firstDataType) firstDataType = type;\n            }\n            // Or just use first one\n            finalDataType = finalDataType || firstDataType;\n        }\n        // If we found a dataType\n        // We add the dataType to the list if needed\n        // and return the corresponding response\n        if (finalDataType) {\n            if (finalDataType !== dataTypes[0]) dataTypes.unshift(finalDataType);\n            return responses[finalDataType];\n        }\n    }\n    /* Chain conversions given the request and the original response\n * Also sets the responseXXX fields on the jqXHR instance\n */ function ajaxConvert(s, response, jqXHR, isSuccess) {\n        var conv2, current, conv, tmp, prev, converters = {}, // Work with a copy of dataTypes in case we need to modify it for conversion\n        dataTypes = s.dataTypes.slice();\n        // Create converters map with lowercased keys\n        if (dataTypes[1]) for(conv in s.converters)converters[conv.toLowerCase()] = s.converters[conv];\n        current = dataTypes.shift();\n        // Convert to each sequential dataType\n        while(current){\n            if (s.responseFields[current]) jqXHR[s.responseFields[current]] = response;\n            // Apply the dataFilter if provided\n            if (!prev && isSuccess && s.dataFilter) response = s.dataFilter(response, s.dataType);\n            prev = current;\n            current = dataTypes.shift();\n            if (current) {\n                // There's only work to do if current dataType is non-auto\n                if (current === \"*\") current = prev;\n                else if (prev !== \"*\" && prev !== current) {\n                    // Seek a direct converter\n                    conv = converters[prev + \" \" + current] || converters[\"* \" + current];\n                    // If none found, seek a pair\n                    if (!conv) for(conv2 in converters){\n                        // If conv2 outputs current\n                        tmp = conv2.split(\" \");\n                        if (tmp[1] === current) {\n                            // If prev can be converted to accepted input\n                            conv = converters[prev + \" \" + tmp[0]] || converters[\"* \" + tmp[0]];\n                            if (conv) {\n                                // Condense equivalence converters\n                                if (conv === true) conv = converters[conv2];\n                                else if (converters[conv2] !== true) {\n                                    current = tmp[0];\n                                    dataTypes.unshift(tmp[1]);\n                                }\n                                break;\n                            }\n                        }\n                    }\n                    // Apply converter (if not an equivalence)\n                    if (conv !== true) {\n                        // Unless errors are allowed to bubble, catch and return them\n                        if (conv && s.throws) response = conv(response);\n                        else try {\n                            response = conv(response);\n                        } catch (e) {\n                            return {\n                                state: \"parsererror\",\n                                error: conv ? e : \"No conversion from \" + prev + \" to \" + current\n                            };\n                        }\n                    }\n                }\n            }\n        }\n        return {\n            state: \"success\",\n            data: response\n        };\n    }\n    jQuery.extend({\n        // Counter for holding the number of active queries\n        active: 0,\n        // Last-Modified header cache for next request\n        lastModified: {},\n        etag: {},\n        ajaxSettings: {\n            url: location.href,\n            type: \"GET\",\n            isLocal: rlocalProtocol.test(location.protocol),\n            global: true,\n            processData: true,\n            async: true,\n            contentType: \"application/x-www-form-urlencoded; charset=UTF-8\",\n            /*\n\t\ttimeout: 0,\n\t\tdata: null,\n\t\tdataType: null,\n\t\tusername: null,\n\t\tpassword: null,\n\t\tcache: null,\n\t\tthrows: false,\n\t\ttraditional: false,\n\t\theaders: {},\n\t\t*/ accepts: {\n                \"*\": allTypes,\n                text: \"text/plain\",\n                html: \"text/html\",\n                xml: \"application/xml, text/xml\",\n                json: \"application/json, text/javascript\"\n            },\n            contents: {\n                xml: /\\bxml\\b/,\n                html: /\\bhtml/,\n                json: /\\bjson\\b/\n            },\n            responseFields: {\n                xml: \"responseXML\",\n                text: \"responseText\",\n                json: \"responseJSON\"\n            },\n            // Data converters\n            // Keys separate source (or catchall \"*\") and destination types with a single space\n            converters: {\n                // Convert anything to text\n                \"* text\": String,\n                // Text to html (true = no transformation)\n                \"text html\": true,\n                // Evaluate text as a json expression\n                \"text json\": JSON.parse,\n                // Parse text as xml\n                \"text xml\": jQuery.parseXML\n            },\n            // For options that shouldn't be deep extended:\n            // you can add your own custom options here if\n            // and when you create one that shouldn't be\n            // deep extended (see ajaxExtend)\n            flatOptions: {\n                url: true,\n                context: true\n            }\n        },\n        // Creates a full fledged settings object into target\n        // with both ajaxSettings and settings fields.\n        // If target is omitted, writes into ajaxSettings.\n        ajaxSetup: function(target, settings) {\n            return settings ? // Building a settings object\n            ajaxExtend(ajaxExtend(target, jQuery.ajaxSettings), settings) : // Extending ajaxSettings\n            ajaxExtend(jQuery.ajaxSettings, target);\n        },\n        ajaxPrefilter: addToPrefiltersOrTransports(prefilters),\n        ajaxTransport: addToPrefiltersOrTransports(transports),\n        // Main method\n        ajax: function(url, options) {\n            // If url is an object, simulate pre-1.5 signature\n            if (typeof url === \"object\") {\n                options = url;\n                url = undefined;\n            }\n            // Force options to be an object\n            options = options || {};\n            var transport, // URL without anti-cache param\n            cacheURL, // Response headers\n            responseHeadersString, responseHeaders, // timeout handle\n            timeoutTimer, // Url cleanup var\n            urlAnchor, // Request state (becomes false upon send and true upon completion)\n            completed, // To know if global events are to be dispatched\n            fireGlobals, // Loop variable\n            i, // uncached part of the url\n            uncached, // Create the final options object\n            s = jQuery.ajaxSetup({}, options), // Callbacks context\n            callbackContext = s.context || s, // Context for global events is callbackContext if it is a DOM node or jQuery collection\n            globalEventContext = s.context && (callbackContext.nodeType || callbackContext.jquery) ? jQuery(callbackContext) : jQuery.event, // Deferreds\n            deferred = jQuery.Deferred(), completeDeferred = jQuery.Callbacks(\"once memory\"), // Status-dependent callbacks\n            statusCode = s.statusCode || {}, // Headers (they are sent all at once)\n            requestHeaders = {}, requestHeadersNames = {}, // Default abort message\n            strAbort = \"canceled\", // Fake xhr\n            jqXHR = {\n                readyState: 0,\n                // Builds headers hashtable if needed\n                getResponseHeader: function(key) {\n                    var match;\n                    if (completed) {\n                        if (!responseHeaders) {\n                            responseHeaders = {};\n                            while(match = rheaders.exec(responseHeadersString))responseHeaders[match[1].toLowerCase() + \" \"] = (responseHeaders[match[1].toLowerCase() + \" \"] || []).concat(match[2]);\n                        }\n                        match = responseHeaders[key.toLowerCase() + \" \"];\n                    }\n                    return match == null ? null : match.join(\", \");\n                },\n                // Raw string\n                getAllResponseHeaders: function() {\n                    return completed ? responseHeadersString : null;\n                },\n                // Caches the header\n                setRequestHeader: function(name, value) {\n                    if (completed == null) {\n                        name = requestHeadersNames[name.toLowerCase()] = requestHeadersNames[name.toLowerCase()] || name;\n                        requestHeaders[name] = value;\n                    }\n                    return this;\n                },\n                // Overrides response content-type header\n                overrideMimeType: function(type) {\n                    if (completed == null) s.mimeType = type;\n                    return this;\n                },\n                // Status-dependent callbacks\n                statusCode: function(map) {\n                    var code;\n                    if (map) {\n                        if (completed) // Execute the appropriate callbacks\n                        jqXHR.always(map[jqXHR.status]);\n                        else // Lazy-add the new callbacks in a way that preserves old ones\n                        for(code in map)statusCode[code] = [\n                            statusCode[code],\n                            map[code]\n                        ];\n                    }\n                    return this;\n                },\n                // Cancel the request\n                abort: function(statusText) {\n                    var finalText = statusText || strAbort;\n                    if (transport) transport.abort(finalText);\n                    done(0, finalText);\n                    return this;\n                }\n            };\n            // Attach deferreds\n            deferred.promise(jqXHR);\n            // Add protocol if not provided (prefilters might expect it)\n            // Handle falsy url in the settings object (trac-10093: consistency with old signature)\n            // We also use the url parameter if available\n            s.url = ((url || s.url || location.href) + \"\").replace(rprotocol, location.protocol + \"//\");\n            // Alias method option to type as per ticket trac-12004\n            s.type = options.method || options.type || s.method || s.type;\n            // Extract dataTypes list\n            s.dataTypes = (s.dataType || \"*\").toLowerCase().match(rnothtmlwhite) || [\n                \"\"\n            ];\n            // A cross-domain request is in order when the origin doesn't match the current origin.\n            if (s.crossDomain == null) {\n                urlAnchor = document.createElement(\"a\");\n                // Support: IE <=8 - 11, Edge 12 - 15\n                // IE throws exception on accessing the href property if url is malformed,\n                // e.g. http://example.com:80x/\n                try {\n                    urlAnchor.href = s.url;\n                    // Support: IE <=8 - 11 only\n                    // Anchor's host property isn't correctly set when s.url is relative\n                    urlAnchor.href = urlAnchor.href;\n                    s.crossDomain = originAnchor.protocol + \"//\" + originAnchor.host !== urlAnchor.protocol + \"//\" + urlAnchor.host;\n                } catch (e) {\n                    // If there is an error parsing the URL, assume it is crossDomain,\n                    // it can be rejected by the transport if it is invalid\n                    s.crossDomain = true;\n                }\n            }\n            // Convert data if not already a string\n            if (s.data && s.processData && typeof s.data !== \"string\") s.data = jQuery.param(s.data, s.traditional);\n            // Apply prefilters\n            inspectPrefiltersOrTransports(prefilters, s, options, jqXHR);\n            // If request was aborted inside a prefilter, stop there\n            if (completed) return jqXHR;\n            // We can fire global events as of now if asked to\n            // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (trac-15118)\n            fireGlobals = jQuery.event && s.global;\n            // Watch for a new set of requests\n            if (fireGlobals && jQuery.active++ === 0) jQuery.event.trigger(\"ajaxStart\");\n            // Uppercase the type\n            s.type = s.type.toUpperCase();\n            // Determine if request has content\n            s.hasContent = !rnoContent.test(s.type);\n            // Save the URL in case we're toying with the If-Modified-Since\n            // and/or If-None-Match header later on\n            // Remove hash to simplify url manipulation\n            cacheURL = s.url.replace(rhash, \"\");\n            // More options handling for requests with no content\n            if (!s.hasContent) {\n                // Remember the hash so we can put it back\n                uncached = s.url.slice(cacheURL.length);\n                // If data is available and should be processed, append data to url\n                if (s.data && (s.processData || typeof s.data === \"string\")) {\n                    cacheURL += (rquery.test(cacheURL) ? \"&\" : \"?\") + s.data;\n                    // trac-9682: remove data so that it's not used in an eventual retry\n                    delete s.data;\n                }\n                // Add or update anti-cache param if needed\n                if (s.cache === false) {\n                    cacheURL = cacheURL.replace(rantiCache, \"$1\");\n                    uncached = (rquery.test(cacheURL) ? \"&\" : \"?\") + \"_=\" + nonce.guid++ + uncached;\n                }\n                // Put hash and anti-cache on the URL that will be requested (gh-1732)\n                s.url = cacheURL + uncached;\n            // Change '%20' to '+' if this is encoded form body content (gh-2658)\n            } else if (s.data && s.processData && (s.contentType || \"\").indexOf(\"application/x-www-form-urlencoded\") === 0) s.data = s.data.replace(r20, \"+\");\n            // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n            if (s.ifModified) {\n                if (jQuery.lastModified[cacheURL]) jqXHR.setRequestHeader(\"If-Modified-Since\", jQuery.lastModified[cacheURL]);\n                if (jQuery.etag[cacheURL]) jqXHR.setRequestHeader(\"If-None-Match\", jQuery.etag[cacheURL]);\n            }\n            // Set the correct header, if data is being sent\n            if (s.data && s.hasContent && s.contentType !== false || options.contentType) jqXHR.setRequestHeader(\"Content-Type\", s.contentType);\n            // Set the Accepts header for the server, depending on the dataType\n            jqXHR.setRequestHeader(\"Accept\", s.dataTypes[0] && s.accepts[s.dataTypes[0]] ? s.accepts[s.dataTypes[0]] + (s.dataTypes[0] !== \"*\" ? \", \" + allTypes + \"; q=0.01\" : \"\") : s.accepts[\"*\"]);\n            // Check for headers option\n            for(i in s.headers)jqXHR.setRequestHeader(i, s.headers[i]);\n            // Allow custom headers/mimetypes and early abort\n            if (s.beforeSend && (s.beforeSend.call(callbackContext, jqXHR, s) === false || completed)) // Abort if not done already and return\n            return jqXHR.abort();\n            // Aborting is no longer a cancellation\n            strAbort = \"abort\";\n            // Install callbacks on deferreds\n            completeDeferred.add(s.complete);\n            jqXHR.done(s.success);\n            jqXHR.fail(s.error);\n            // Get transport\n            transport = inspectPrefiltersOrTransports(transports, s, options, jqXHR);\n            // If no transport, we auto-abort\n            if (!transport) done(-1, \"No Transport\");\n            else {\n                jqXHR.readyState = 1;\n                // Send global event\n                if (fireGlobals) globalEventContext.trigger(\"ajaxSend\", [\n                    jqXHR,\n                    s\n                ]);\n                // If request was aborted inside ajaxSend, stop there\n                if (completed) return jqXHR;\n                // Timeout\n                if (s.async && s.timeout > 0) timeoutTimer = window1.setTimeout(function() {\n                    jqXHR.abort(\"timeout\");\n                }, s.timeout);\n                try {\n                    completed = false;\n                    transport.send(requestHeaders, done);\n                } catch (e) {\n                    // Rethrow post-completion exceptions\n                    if (completed) throw e;\n                    // Propagate others as results\n                    done(-1, e);\n                }\n            }\n            // Callback for when everything is done\n            function done(status, nativeStatusText, responses, headers) {\n                var isSuccess, success, error, response, modified, statusText = nativeStatusText;\n                // Ignore repeat invocations\n                if (completed) return;\n                completed = true;\n                // Clear timeout if it exists\n                if (timeoutTimer) window1.clearTimeout(timeoutTimer);\n                // Dereference transport for early garbage collection\n                // (no matter how long the jqXHR object will be used)\n                transport = undefined;\n                // Cache response headers\n                responseHeadersString = headers || \"\";\n                // Set readyState\n                jqXHR.readyState = status > 0 ? 4 : 0;\n                // Determine if successful\n                isSuccess = status >= 200 && status < 300 || status === 304;\n                // Get response data\n                if (responses) response = ajaxHandleResponses(s, jqXHR, responses);\n                // Use a noop converter for missing script but not if jsonp\n                if (!isSuccess && jQuery.inArray(\"script\", s.dataTypes) > -1 && jQuery.inArray(\"json\", s.dataTypes) < 0) s.converters[\"text script\"] = function() {};\n                // Convert no matter what (that way responseXXX fields are always set)\n                response = ajaxConvert(s, response, jqXHR, isSuccess);\n                // If successful, handle type chaining\n                if (isSuccess) {\n                    // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n                    if (s.ifModified) {\n                        modified = jqXHR.getResponseHeader(\"Last-Modified\");\n                        if (modified) jQuery.lastModified[cacheURL] = modified;\n                        modified = jqXHR.getResponseHeader(\"etag\");\n                        if (modified) jQuery.etag[cacheURL] = modified;\n                    }\n                    // if no content\n                    if (status === 204 || s.type === \"HEAD\") statusText = \"nocontent\";\n                    else if (status === 304) statusText = \"notmodified\";\n                    else {\n                        statusText = response.state;\n                        success = response.data;\n                        error = response.error;\n                        isSuccess = !error;\n                    }\n                } else {\n                    // Extract error from statusText and normalize for non-aborts\n                    error = statusText;\n                    if (status || !statusText) {\n                        statusText = \"error\";\n                        if (status < 0) status = 0;\n                    }\n                }\n                // Set data for the fake xhr object\n                jqXHR.status = status;\n                jqXHR.statusText = (nativeStatusText || statusText) + \"\";\n                // Success/Error\n                if (isSuccess) deferred.resolveWith(callbackContext, [\n                    success,\n                    statusText,\n                    jqXHR\n                ]);\n                else deferred.rejectWith(callbackContext, [\n                    jqXHR,\n                    statusText,\n                    error\n                ]);\n                // Status-dependent callbacks\n                jqXHR.statusCode(statusCode);\n                statusCode = undefined;\n                if (fireGlobals) globalEventContext.trigger(isSuccess ? \"ajaxSuccess\" : \"ajaxError\", [\n                    jqXHR,\n                    s,\n                    isSuccess ? success : error\n                ]);\n                // Complete\n                completeDeferred.fireWith(callbackContext, [\n                    jqXHR,\n                    statusText\n                ]);\n                if (fireGlobals) {\n                    globalEventContext.trigger(\"ajaxComplete\", [\n                        jqXHR,\n                        s\n                    ]);\n                    // Handle the global AJAX counter\n                    if (!--jQuery.active) jQuery.event.trigger(\"ajaxStop\");\n                }\n            }\n            return jqXHR;\n        },\n        getJSON: function(url, data, callback) {\n            return jQuery.get(url, data, callback, \"json\");\n        },\n        getScript: function(url, callback) {\n            return jQuery.get(url, undefined, callback, \"script\");\n        }\n    });\n    jQuery.each([\n        \"get\",\n        \"post\"\n    ], function(_i, method) {\n        jQuery[method] = function(url, data, callback, type) {\n            // Shift arguments if data argument was omitted\n            if (isFunction(data)) {\n                type = type || callback;\n                callback = data;\n                data = undefined;\n            }\n            // The url can be an options object (which then must have .url)\n            return jQuery.ajax(jQuery.extend({\n                url: url,\n                type: method,\n                dataType: type,\n                data: data,\n                success: callback\n            }, jQuery.isPlainObject(url) && url));\n        };\n    });\n    jQuery.ajaxPrefilter(function(s) {\n        var i;\n        for(i in s.headers)if (i.toLowerCase() === \"content-type\") s.contentType = s.headers[i] || \"\";\n    });\n    jQuery._evalUrl = function(url, options, doc) {\n        return jQuery.ajax({\n            url: url,\n            // Make this explicit, since user can override this through ajaxSetup (trac-11264)\n            type: \"GET\",\n            dataType: \"script\",\n            cache: true,\n            async: false,\n            global: false,\n            // Only evaluate the response if it is successful (gh-4126)\n            // dataFilter is not invoked for failure responses, so using it instead\n            // of the default converter is kludgy but it works.\n            converters: {\n                \"text script\": function() {}\n            },\n            dataFilter: function(response) {\n                jQuery.globalEval(response, options, doc);\n            }\n        });\n    };\n    jQuery.fn.extend({\n        wrapAll: function(html) {\n            var wrap;\n            if (this[0]) {\n                if (isFunction(html)) html = html.call(this[0]);\n                // The elements to wrap the target around\n                wrap = jQuery(html, this[0].ownerDocument).eq(0).clone(true);\n                if (this[0].parentNode) wrap.insertBefore(this[0]);\n                wrap.map(function() {\n                    var elem = this;\n                    while(elem.firstElementChild)elem = elem.firstElementChild;\n                    return elem;\n                }).append(this);\n            }\n            return this;\n        },\n        wrapInner: function(html) {\n            if (isFunction(html)) return this.each(function(i) {\n                jQuery(this).wrapInner(html.call(this, i));\n            });\n            return this.each(function() {\n                var self = jQuery(this), contents = self.contents();\n                if (contents.length) contents.wrapAll(html);\n                else self.append(html);\n            });\n        },\n        wrap: function(html) {\n            var htmlIsFunction = isFunction(html);\n            return this.each(function(i) {\n                jQuery(this).wrapAll(htmlIsFunction ? html.call(this, i) : html);\n            });\n        },\n        unwrap: function(selector) {\n            this.parent(selector).not(\"body\").each(function() {\n                jQuery(this).replaceWith(this.childNodes);\n            });\n            return this;\n        }\n    });\n    jQuery.expr.pseudos.hidden = function(elem) {\n        return !jQuery.expr.pseudos.visible(elem);\n    };\n    jQuery.expr.pseudos.visible = function(elem) {\n        return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);\n    };\n    jQuery.ajaxSettings.xhr = function() {\n        try {\n            return new window1.XMLHttpRequest();\n        } catch (e) {}\n    };\n    var xhrSuccessStatus = {\n        // File protocol always yields status code 0, assume 200\n        0: 200,\n        // Support: IE <=9 only\n        // trac-1450: sometimes IE returns 1223 when it should be 204\n        1223: 204\n    }, xhrSupported = jQuery.ajaxSettings.xhr();\n    support.cors = !!xhrSupported && \"withCredentials\" in xhrSupported;\n    support.ajax = xhrSupported = !!xhrSupported;\n    jQuery.ajaxTransport(function(options) {\n        var callback, errorCallback;\n        // Cross domain only allowed if supported through XMLHttpRequest\n        if (support.cors || xhrSupported && !options.crossDomain) return {\n            send: function(headers, complete) {\n                var i, xhr = options.xhr();\n                xhr.open(options.type, options.url, options.async, options.username, options.password);\n                // Apply custom fields if provided\n                if (options.xhrFields) for(i in options.xhrFields)xhr[i] = options.xhrFields[i];\n                // Override mime type if needed\n                if (options.mimeType && xhr.overrideMimeType) xhr.overrideMimeType(options.mimeType);\n                // X-Requested-With header\n                // For cross-domain requests, seeing as conditions for a preflight are\n                // akin to a jigsaw puzzle, we simply never set it to be sure.\n                // (it can always be set on a per-request basis or even using ajaxSetup)\n                // For same-domain requests, won't change header if already provided.\n                if (!options.crossDomain && !headers[\"X-Requested-With\"]) headers[\"X-Requested-With\"] = \"XMLHttpRequest\";\n                // Set headers\n                for(i in headers)xhr.setRequestHeader(i, headers[i]);\n                // Callback\n                callback = function(type) {\n                    return function() {\n                        if (callback) {\n                            callback = errorCallback = xhr.onload = xhr.onerror = xhr.onabort = xhr.ontimeout = xhr.onreadystatechange = null;\n                            if (type === \"abort\") xhr.abort();\n                            else if (type === \"error\") {\n                                // Support: IE <=9 only\n                                // On a manual native abort, IE9 throws\n                                // errors on any property access that is not readyState\n                                if (typeof xhr.status !== \"number\") complete(0, \"error\");\n                                else complete(// File: protocol always yields status 0; see trac-8605, trac-14207\n                                xhr.status, xhr.statusText);\n                            } else complete(xhrSuccessStatus[xhr.status] || xhr.status, xhr.statusText, // Support: IE <=9 only\n                            // IE9 has no XHR2 but throws on binary (trac-11426)\n                            // For XHR2 non-text, let the caller handle it (gh-2498)\n                            (xhr.responseType || \"text\") !== \"text\" || typeof xhr.responseText !== \"string\" ? {\n                                binary: xhr.response\n                            } : {\n                                text: xhr.responseText\n                            }, xhr.getAllResponseHeaders());\n                        }\n                    };\n                };\n                // Listen to events\n                xhr.onload = callback();\n                errorCallback = xhr.onerror = xhr.ontimeout = callback(\"error\");\n                // Support: IE 9 only\n                // Use onreadystatechange to replace onabort\n                // to handle uncaught aborts\n                if (xhr.onabort !== undefined) xhr.onabort = errorCallback;\n                else xhr.onreadystatechange = function() {\n                    // Check readyState before timeout as it changes\n                    if (xhr.readyState === 4) // Allow onerror to be called first,\n                    // but that will not handle a native abort\n                    // Also, save errorCallback to a variable\n                    // as xhr.onerror cannot be accessed\n                    window1.setTimeout(function() {\n                        if (callback) errorCallback();\n                    });\n                };\n                // Create the abort callback\n                callback = callback(\"abort\");\n                try {\n                    // Do send the request (this may raise an exception)\n                    xhr.send(options.hasContent && options.data || null);\n                } catch (e) {\n                    // trac-14683: Only rethrow if this hasn't been notified as an error yet\n                    if (callback) throw e;\n                }\n            },\n            abort: function() {\n                if (callback) callback();\n            }\n        };\n    });\n    // Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)\n    jQuery.ajaxPrefilter(function(s) {\n        if (s.crossDomain) s.contents.script = false;\n    });\n    // Install script dataType\n    jQuery.ajaxSetup({\n        accepts: {\n            script: \"text/javascript, application/javascript, application/ecmascript, application/x-ecmascript\"\n        },\n        contents: {\n            script: /\\b(?:java|ecma)script\\b/\n        },\n        converters: {\n            \"text script\": function(text) {\n                jQuery.globalEval(text);\n                return text;\n            }\n        }\n    });\n    // Handle cache's special case and crossDomain\n    jQuery.ajaxPrefilter(\"script\", function(s) {\n        if (s.cache === undefined) s.cache = false;\n        if (s.crossDomain) s.type = \"GET\";\n    });\n    // Bind script tag hack transport\n    jQuery.ajaxTransport(\"script\", function(s) {\n        // This transport only deals with cross domain or forced-by-attrs requests\n        if (s.crossDomain || s.scriptAttrs) {\n            var script, callback;\n            return {\n                send: function(_, complete) {\n                    script = jQuery(\"<script>\").attr(s.scriptAttrs || {}).prop({\n                        charset: s.scriptCharset,\n                        src: s.url\n                    }).on(\"load error\", callback = function(evt) {\n                        script.remove();\n                        callback = null;\n                        if (evt) complete(evt.type === \"error\" ? 404 : 200, evt.type);\n                    });\n                    // Use native DOM manipulation to avoid our domManip AJAX trickery\n                    document.head.appendChild(script[0]);\n                },\n                abort: function() {\n                    if (callback) callback();\n                }\n            };\n        }\n    });\n    var oldCallbacks = [], rjsonp = /(=)\\?(?=&|$)|\\?\\?/;\n    // Default jsonp settings\n    jQuery.ajaxSetup({\n        jsonp: \"callback\",\n        jsonpCallback: function() {\n            var callback = oldCallbacks.pop() || jQuery.expando + \"_\" + nonce.guid++;\n            this[callback] = true;\n            return callback;\n        }\n    });\n    // Detect, normalize options and install callbacks for jsonp requests\n    jQuery.ajaxPrefilter(\"json jsonp\", function(s, originalSettings, jqXHR) {\n        var callbackName, overwritten, responseContainer, jsonProp = s.jsonp !== false && (rjsonp.test(s.url) ? \"url\" : typeof s.data === \"string\" && (s.contentType || \"\").indexOf(\"application/x-www-form-urlencoded\") === 0 && rjsonp.test(s.data) && \"data\");\n        // Handle iff the expected data type is \"jsonp\" or we have a parameter to set\n        if (jsonProp || s.dataTypes[0] === \"jsonp\") {\n            // Get callback name, remembering preexisting value associated with it\n            callbackName = s.jsonpCallback = isFunction(s.jsonpCallback) ? s.jsonpCallback() : s.jsonpCallback;\n            // Insert callback into url or form data\n            if (jsonProp) s[jsonProp] = s[jsonProp].replace(rjsonp, \"$1\" + callbackName);\n            else if (s.jsonp !== false) s.url += (rquery.test(s.url) ? \"&\" : \"?\") + s.jsonp + \"=\" + callbackName;\n            // Use data converter to retrieve json after script execution\n            s.converters[\"script json\"] = function() {\n                if (!responseContainer) jQuery.error(callbackName + \" was not called\");\n                return responseContainer[0];\n            };\n            // Force json dataType\n            s.dataTypes[0] = \"json\";\n            // Install callback\n            overwritten = window1[callbackName];\n            window1[callbackName] = function() {\n                responseContainer = arguments;\n            };\n            // Clean-up function (fires after converters)\n            jqXHR.always(function() {\n                // If previous value didn't exist - remove it\n                if (overwritten === undefined) jQuery(window1).removeProp(callbackName);\n                else window1[callbackName] = overwritten;\n                // Save back as free\n                if (s[callbackName]) {\n                    // Make sure that re-using the options doesn't screw things around\n                    s.jsonpCallback = originalSettings.jsonpCallback;\n                    // Save the callback name for future use\n                    oldCallbacks.push(callbackName);\n                }\n                // Call if it was a function and we have a response\n                if (responseContainer && isFunction(overwritten)) overwritten(responseContainer[0]);\n                responseContainer = overwritten = undefined;\n            });\n            // Delegate to script\n            return \"script\";\n        }\n    });\n    // Support: Safari 8 only\n    // In Safari 8 documents created via document.implementation.createHTMLDocument\n    // collapse sibling forms: the second one becomes a child of the first one.\n    // Because of that, this security measure has to be disabled in Safari 8.\n    // https://bugs.webkit.org/show_bug.cgi?id=137337\n    support.createHTMLDocument = function() {\n        var body = document.implementation.createHTMLDocument(\"\").body;\n        body.innerHTML = \"<form></form><form></form>\";\n        return body.childNodes.length === 2;\n    }();\n    // Argument \"data\" should be string of html\n    // context (optional): If specified, the fragment will be created in this context,\n    // defaults to document\n    // keepScripts (optional): If true, will include scripts passed in the html string\n    jQuery.parseHTML = function(data, context, keepScripts) {\n        if (typeof data !== \"string\") return [];\n        if (typeof context === \"boolean\") {\n            keepScripts = context;\n            context = false;\n        }\n        var base, parsed, scripts;\n        if (!context) {\n            // Stop scripts or inline event handlers from being executed immediately\n            // by using document.implementation\n            if (support.createHTMLDocument) {\n                context = document.implementation.createHTMLDocument(\"\");\n                // Set the base href for the created document\n                // so any parsed elements with URLs\n                // are based on the document's URL (gh-2965)\n                base = context.createElement(\"base\");\n                base.href = document.location.href;\n                context.head.appendChild(base);\n            } else context = document;\n        }\n        parsed = rsingleTag.exec(data);\n        scripts = !keepScripts && [];\n        // Single tag\n        if (parsed) return [\n            context.createElement(parsed[1])\n        ];\n        parsed = buildFragment([\n            data\n        ], context, scripts);\n        if (scripts && scripts.length) jQuery(scripts).remove();\n        return jQuery.merge([], parsed.childNodes);\n    };\n    /**\n * Load a url into a page\n */ jQuery.fn.load = function(url, params, callback) {\n        var selector, type, response, self = this, off = url.indexOf(\" \");\n        if (off > -1) {\n            selector = stripAndCollapse(url.slice(off));\n            url = url.slice(0, off);\n        }\n        // If it's a function\n        if (isFunction(params)) {\n            // We assume that it's the callback\n            callback = params;\n            params = undefined;\n        // Otherwise, build a param string\n        } else if (params && typeof params === \"object\") type = \"POST\";\n        // If we have elements to modify, make the request\n        if (self.length > 0) jQuery.ajax({\n            url: url,\n            // If \"type\" variable is undefined, then \"GET\" method will be used.\n            // Make value of this field explicit since\n            // user can override it through ajaxSetup method\n            type: type || \"GET\",\n            dataType: \"html\",\n            data: params\n        }).done(function(responseText) {\n            // Save response for use in complete callback\n            response = arguments;\n            self.html(selector ? // If a selector was specified, locate the right elements in a dummy div\n            // Exclude scripts to avoid IE 'Permission Denied' errors\n            jQuery(\"<div>\").append(jQuery.parseHTML(responseText)).find(selector) : // Otherwise use the full result\n            responseText);\n        // If the request succeeds, this function gets \"data\", \"status\", \"jqXHR\"\n        // but they are ignored because response was set above.\n        // If it fails, this function gets \"jqXHR\", \"status\", \"error\"\n        }).always(callback && function(jqXHR, status) {\n            self.each(function() {\n                callback.apply(this, response || [\n                    jqXHR.responseText,\n                    status,\n                    jqXHR\n                ]);\n            });\n        });\n        return this;\n    };\n    jQuery.expr.pseudos.animated = function(elem) {\n        return jQuery.grep(jQuery.timers, function(fn) {\n            return elem === fn.elem;\n        }).length;\n    };\n    jQuery.offset = {\n        setOffset: function(elem, options, i) {\n            var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition, position = jQuery.css(elem, \"position\"), curElem = jQuery(elem), props = {};\n            // Set position first, in-case top/left are set even on static elem\n            if (position === \"static\") elem.style.position = \"relative\";\n            curOffset = curElem.offset();\n            curCSSTop = jQuery.css(elem, \"top\");\n            curCSSLeft = jQuery.css(elem, \"left\");\n            calculatePosition = (position === \"absolute\" || position === \"fixed\") && (curCSSTop + curCSSLeft).indexOf(\"auto\") > -1;\n            // Need to be able to calculate position if either\n            // top or left is auto and position is either absolute or fixed\n            if (calculatePosition) {\n                curPosition = curElem.position();\n                curTop = curPosition.top;\n                curLeft = curPosition.left;\n            } else {\n                curTop = parseFloat(curCSSTop) || 0;\n                curLeft = parseFloat(curCSSLeft) || 0;\n            }\n            if (isFunction(options)) // Use jQuery.extend here to allow modification of coordinates argument (gh-1848)\n            options = options.call(elem, i, jQuery.extend({}, curOffset));\n            if (options.top != null) props.top = options.top - curOffset.top + curTop;\n            if (options.left != null) props.left = options.left - curOffset.left + curLeft;\n            if (\"using\" in options) options.using.call(elem, props);\n            else curElem.css(props);\n        }\n    };\n    jQuery.fn.extend({\n        // offset() relates an element's border box to the document origin\n        offset: function(options) {\n            // Preserve chaining for setter\n            if (arguments.length) return options === undefined ? this : this.each(function(i) {\n                jQuery.offset.setOffset(this, options, i);\n            });\n            var rect, win, elem = this[0];\n            if (!elem) return;\n            // Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n            // Support: IE <=11 only\n            // Running getBoundingClientRect on a\n            // disconnected node in IE throws an error\n            if (!elem.getClientRects().length) return {\n                top: 0,\n                left: 0\n            };\n            // Get document-relative position by adding viewport scroll to viewport-relative gBCR\n            rect = elem.getBoundingClientRect();\n            win = elem.ownerDocument.defaultView;\n            return {\n                top: rect.top + win.pageYOffset,\n                left: rect.left + win.pageXOffset\n            };\n        },\n        // position() relates an element's margin box to its offset parent's padding box\n        // This corresponds to the behavior of CSS absolute positioning\n        position: function() {\n            if (!this[0]) return;\n            var offsetParent, offset, doc, elem = this[0], parentOffset = {\n                top: 0,\n                left: 0\n            };\n            // position:fixed elements are offset from the viewport, which itself always has zero offset\n            if (jQuery.css(elem, \"position\") === \"fixed\") // Assume position:fixed implies availability of getBoundingClientRect\n            offset = elem.getBoundingClientRect();\n            else {\n                offset = this.offset();\n                // Account for the *real* offset parent, which can be the document or its root element\n                // when a statically positioned element is identified\n                doc = elem.ownerDocument;\n                offsetParent = elem.offsetParent || doc.documentElement;\n                while(offsetParent && (offsetParent === doc.body || offsetParent === doc.documentElement) && jQuery.css(offsetParent, \"position\") === \"static\")offsetParent = offsetParent.parentNode;\n                if (offsetParent && offsetParent !== elem && offsetParent.nodeType === 1) {\n                    // Incorporate borders into its offset, since they are outside its content origin\n                    parentOffset = jQuery(offsetParent).offset();\n                    parentOffset.top += jQuery.css(offsetParent, \"borderTopWidth\", true);\n                    parentOffset.left += jQuery.css(offsetParent, \"borderLeftWidth\", true);\n                }\n            }\n            // Subtract parent offsets and element margins\n            return {\n                top: offset.top - parentOffset.top - jQuery.css(elem, \"marginTop\", true),\n                left: offset.left - parentOffset.left - jQuery.css(elem, \"marginLeft\", true)\n            };\n        },\n        // This method will return documentElement in the following cases:\n        // 1) For the element inside the iframe without offsetParent, this method will return\n        //    documentElement of the parent window\n        // 2) For the hidden or detached element\n        // 3) For body or html element, i.e. in case of the html node - it will return itself\n        //\n        // but those exceptions were never presented as a real life use-cases\n        // and might be considered as more preferable results.\n        //\n        // This logic, however, is not guaranteed and can change at any point in the future\n        offsetParent: function() {\n            return this.map(function() {\n                var offsetParent = this.offsetParent;\n                while(offsetParent && jQuery.css(offsetParent, \"position\") === \"static\")offsetParent = offsetParent.offsetParent;\n                return offsetParent || documentElement;\n            });\n        }\n    });\n    // Create scrollLeft and scrollTop methods\n    jQuery.each({\n        scrollLeft: \"pageXOffset\",\n        scrollTop: \"pageYOffset\"\n    }, function(method, prop) {\n        var top = \"pageYOffset\" === prop;\n        jQuery.fn[method] = function(val) {\n            return access(this, function(elem, method, val) {\n                // Coalesce documents and windows\n                var win;\n                if (isWindow(elem)) win = elem;\n                else if (elem.nodeType === 9) win = elem.defaultView;\n                if (val === undefined) return win ? win[prop] : elem[method];\n                if (win) win.scrollTo(!top ? val : win.pageXOffset, top ? val : win.pageYOffset);\n                else elem[method] = val;\n            }, method, val, arguments.length);\n        };\n    });\n    // Support: Safari <=7 - 9.1, Chrome <=37 - 49\n    // Add the top/left cssHooks using jQuery.fn.position\n    // Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084\n    // Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347\n    // getComputedStyle returns percent when specified for top/left/bottom/right;\n    // rather than make the css module depend on the offset module, just check for it here\n    jQuery.each([\n        \"top\",\n        \"left\"\n    ], function(_i, prop) {\n        jQuery.cssHooks[prop] = addGetHookIf(support.pixelPosition, function(elem, computed) {\n            if (computed) {\n                computed = curCSS(elem, prop);\n                // If curCSS returns percentage, fallback to offset\n                return rnumnonpx.test(computed) ? jQuery(elem).position()[prop] + \"px\" : computed;\n            }\n        });\n    });\n    // Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods\n    jQuery.each({\n        Height: \"height\",\n        Width: \"width\"\n    }, function(name, type) {\n        jQuery.each({\n            padding: \"inner\" + name,\n            content: type,\n            \"\": \"outer\" + name\n        }, function(defaultExtra, funcName) {\n            // Margin is only for outerHeight, outerWidth\n            jQuery.fn[funcName] = function(margin, value) {\n                var chainable = arguments.length && (defaultExtra || typeof margin !== \"boolean\"), extra = defaultExtra || (margin === true || value === true ? \"margin\" : \"border\");\n                return access(this, function(elem, type, value) {\n                    var doc;\n                    if (isWindow(elem)) // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)\n                    return funcName.indexOf(\"outer\") === 0 ? elem[\"inner\" + name] : elem.document.documentElement[\"client\" + name];\n                    // Get document width or height\n                    if (elem.nodeType === 9) {\n                        doc = elem.documentElement;\n                        // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],\n                        // whichever is greatest\n                        return Math.max(elem.body[\"scroll\" + name], doc[\"scroll\" + name], elem.body[\"offset\" + name], doc[\"offset\" + name], doc[\"client\" + name]);\n                    }\n                    return value === undefined ? // Get width or height on the element, requesting but not forcing parseFloat\n                    jQuery.css(elem, type, extra) : // Set width or height on the element\n                    jQuery.style(elem, type, value, extra);\n                }, type, chainable ? margin : undefined, chainable);\n            };\n        });\n    });\n    jQuery.each([\n        \"ajaxStart\",\n        \"ajaxStop\",\n        \"ajaxComplete\",\n        \"ajaxError\",\n        \"ajaxSuccess\",\n        \"ajaxSend\"\n    ], function(_i, type) {\n        jQuery.fn[type] = function(fn) {\n            return this.on(type, fn);\n        };\n    });\n    jQuery.fn.extend({\n        bind: function(types, data, fn) {\n            return this.on(types, null, data, fn);\n        },\n        unbind: function(types, fn) {\n            return this.off(types, null, fn);\n        },\n        delegate: function(selector, types, data, fn) {\n            return this.on(types, selector, data, fn);\n        },\n        undelegate: function(selector, types, fn) {\n            // ( namespace ) or ( selector, types [, fn] )\n            return arguments.length === 1 ? this.off(selector, \"**\") : this.off(types, selector || \"**\", fn);\n        },\n        hover: function(fnOver, fnOut) {\n            return this.on(\"mouseenter\", fnOver).on(\"mouseleave\", fnOut || fnOver);\n        }\n    });\n    jQuery.each(\"blur focus focusin focusout resize scroll click dblclick mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave change select submit keydown keypress keyup contextmenu\".split(\" \"), function(_i, name) {\n        // Handle event binding\n        jQuery.fn[name] = function(data, fn) {\n            return arguments.length > 0 ? this.on(name, null, data, fn) : this.trigger(name);\n        };\n    });\n    // Support: Android <=4.0 only\n    // Make sure we trim BOM and NBSP\n    // Require that the \"whitespace run\" starts from a non-whitespace\n    // to avoid O(N^2) behavior when the engine would try matching \"\\s+$\" at each space position.\n    var rtrim = /^[\\s\\uFEFF\\xA0]+|([^\\s\\uFEFF\\xA0])[\\s\\uFEFF\\xA0]+$/g;\n    // Bind a function to a context, optionally partially applying any\n    // arguments.\n    // jQuery.proxy is deprecated to promote standards (specifically Function#bind)\n    // However, it is not slated for removal any time soon\n    jQuery.proxy = function(fn, context) {\n        var tmp, args, proxy;\n        if (typeof context === \"string\") {\n            tmp = fn[context];\n            context = fn;\n            fn = tmp;\n        }\n        // Quick check to determine if target is callable, in the spec\n        // this throws a TypeError, but we will just return undefined.\n        if (!isFunction(fn)) return undefined;\n        // Simulated bind\n        args = slice.call(arguments, 2);\n        proxy = function() {\n            return fn.apply(context || this, args.concat(slice.call(arguments)));\n        };\n        // Set the guid of unique handler to the same of original handler, so it can be removed\n        proxy.guid = fn.guid = fn.guid || jQuery.guid++;\n        return proxy;\n    };\n    jQuery.holdReady = function(hold) {\n        if (hold) jQuery.readyWait++;\n        else jQuery.ready(true);\n    };\n    jQuery.isArray = Array.isArray;\n    jQuery.parseJSON = JSON.parse;\n    jQuery.nodeName = nodeName;\n    jQuery.isFunction = isFunction;\n    jQuery.isWindow = isWindow;\n    jQuery.camelCase = camelCase;\n    jQuery.type = toType;\n    jQuery.now = Date.now;\n    jQuery.isNumeric = function(obj) {\n        // As of jQuery 3.0, isNumeric is limited to\n        // strings and numbers (primitives or objects)\n        // that can be coerced to finite numbers (gh-2662)\n        var type = jQuery.type(obj);\n        return (type === \"number\" || type === \"string\") && // parseFloat NaNs numeric-cast false positives (\"\")\n        // ...but misinterprets leading-number strings, particularly hex literals (\"0x...\")\n        // subtraction forces infinities to NaN\n        !isNaN(obj - parseFloat(obj));\n    };\n    jQuery.trim = function(text) {\n        return text == null ? \"\" : (text + \"\").replace(rtrim, \"$1\");\n    };\n    // Register as a named AMD module, since jQuery can be concatenated with other\n    // files that may use define, but not via a proper concatenation script that\n    // understands anonymous AMD modules. A named AMD is safest and most robust\n    // way to register. Lowercase jquery is used because AMD module names are\n    // derived from file names, and jQuery is normally delivered in a lowercase\n    // file name. Do this after creating the global so that if an AMD module wants\n    // to call noConflict to hide this version of jQuery, it will work.\n    // Note that for maximum portability, libraries that are not jQuery should\n    // declare themselves as anonymous modules, and avoid setting a global if an\n    // AMD loader is present. jQuery is a special case. For more information, see\n    // https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon\n    if (typeof define === \"function\" && define.amd) define(\"jquery\", [], function() {\n        return jQuery;\n    });\n    var // Map over jQuery in case of overwrite\n    _jQuery = window1.jQuery, // Map over the $ in case of overwrite\n    _$ = window1.$;\n    jQuery.noConflict = function(deep) {\n        if (window1.$ === jQuery) window1.$ = _$;\n        if (deep && window1.jQuery === jQuery) window1.jQuery = _jQuery;\n        return jQuery;\n    };\n    // Expose jQuery and $ identifiers, even in AMD\n    // (trac-7102#comment:10, https://github.com/jquery/jquery/pull/557)\n    // and CommonJS for browser emulators (trac-13566)\n    if (typeof noGlobal === \"undefined\") window1.jQuery = window1.$ = jQuery;\n    return jQuery;\n});\n\n\n\nvar $9fvPZ = parcelRequire(\"9fvPZ\");\n\n/**\n * {@link Session} state.\n *\n * @remarks\n * The {@link Session} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   ___________________________________________________________\n *                  |  ____________________________________________             |\n *                  | |            ____________________________    |            |\n * Session          | |           |                            v   v            v\n * Constructed -> Initial -> Establishing -> Established -> Terminating -> Terminated\n *                                |               |___________________________^   ^\n *                                |_______________________________________________|\n * ```\n * @public\n */ var $13c8043412d0bf9c$export$84bf1aca7aacb716;\n(function(SessionState) {\n    /**\n     * If `Inviter`, INVITE not sent yet.\n     * If `Invitation`, received INVITE (but no final response sent yet).\n     */ SessionState[\"Initial\"] = \"Initial\";\n    /**\n     * If `Inviter`, sent INVITE and waiting for a final response.\n     * If `Invitation`, received INVITE and attempting to send 200 final response (but has not sent it yet).\n     */ SessionState[\"Establishing\"] = \"Establishing\";\n    /**\n     * If `Inviter`, sent INVITE and received 200 final response and sent ACK.\n     * If `Invitation`, received INVITE and sent 200 final response.\n     */ SessionState[\"Established\"] = \"Established\";\n    /**\n     * If `Inviter`, sent INVITE, sent CANCEL and now waiting for 487 final response to ACK (or 200 to ACK & BYE).\n     * If `Invitation`, received INVITE, sent 200 final response and now waiting on ACK and upon receipt will attempt BYE\n     * (as the protocol specification requires, before sending a BYE we must receive the ACK - so we are waiting).\n     */ SessionState[\"Terminating\"] = \"Terminating\";\n    /**\n     * If `Inviter`, sent INVITE and received non-200 final response (or sent/received BYE after receiving 200).\n     * If `Invitation`, received INVITE and sent non-200 final response (or sent/received BYE after sending 200).\n     */ SessionState[\"Terminated\"] = \"Terminated\";\n})($13c8043412d0bf9c$export$84bf1aca7aacb716 = $13c8043412d0bf9c$export$84bf1aca7aacb716 || ($13c8043412d0bf9c$export$84bf1aca7aacb716 = {}));\n\n\n/**\n * Log levels.\n * @public\n */ var $bb2da993b0fb58b9$export$7dc82a261720bb19;\n(function(Levels) {\n    Levels[Levels[\"error\"] = 0] = \"error\";\n    Levels[Levels[\"warn\"] = 1] = \"warn\";\n    Levels[Levels[\"log\"] = 2] = \"log\";\n    Levels[Levels[\"debug\"] = 3] = \"debug\";\n})($bb2da993b0fb58b9$export$7dc82a261720bb19 = $bb2da993b0fb58b9$export$7dc82a261720bb19 || ($bb2da993b0fb58b9$export$7dc82a261720bb19 = {}));\n\n\nvar $71514f66503c648c$exports = {};\nvar $afd7e7a9fe59c60f$exports = {};\n/**\n * SessionDescriptionHandlerModifer functions for web browsers.\n * @packageDocumentation\n */ var $864193eb0123b61a$exports = {};\n\n$parcel$export($864193eb0123b61a$exports, \"stripTcpCandidates\", () => $864193eb0123b61a$export$ebbe22f70d5ea4d4);\n$parcel$export($864193eb0123b61a$exports, \"stripTelephoneEvent\", () => $864193eb0123b61a$export$a1a26d1d338da5f7);\n$parcel$export($864193eb0123b61a$exports, \"cleanJitsiSdpImageattr\", () => $864193eb0123b61a$export$d098684501cab718);\n$parcel$export($864193eb0123b61a$exports, \"stripG722\", () => $864193eb0123b61a$export$d6c901af15ec0d83);\n$parcel$export($864193eb0123b61a$exports, \"stripRtpPayload\", () => $864193eb0123b61a$export$19eb739e3f606d2d);\n$parcel$export($864193eb0123b61a$exports, \"stripVideo\", () => $864193eb0123b61a$export$256854e96123f02b);\n$parcel$export($864193eb0123b61a$exports, \"addMidLines\", () => $864193eb0123b61a$export$9b507344359c196b);\n$parcel$export($864193eb0123b61a$exports, \"holdModifier\", () => $864193eb0123b61a$export$962a66d9233196f6);\nconst $864193eb0123b61a$var$stripPayload = (sdp, payload)=>{\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const mediaDescs = [];\n    const lines = sdp.split(/\\r\\n/);\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    let currentMediaDesc;\n    for(let i = 0; i < lines.length;){\n        const line = lines[i];\n        if (/^m=(?:audio|video)/.test(line)) {\n            currentMediaDesc = {\n                index: i,\n                stripped: []\n            };\n            mediaDescs.push(currentMediaDesc);\n        } else if (currentMediaDesc) {\n            const rtpmap = /^a=rtpmap:(\\d+) ([^/]+)\\//.exec(line);\n            if (rtpmap && payload === rtpmap[2]) {\n                lines.splice(i, 1);\n                currentMediaDesc.stripped.push(rtpmap[1]);\n                continue; // Don't increment 'i'\n            }\n        }\n        i++;\n    }\n    for (const mediaDesc of mediaDescs){\n        const mline = lines[mediaDesc.index].split(\" \");\n        // Ignore the first 3 parameters of the mline. The codec information is after that\n        for(let j = 3; j < mline.length;){\n            if (mediaDesc.stripped.indexOf(mline[j]) !== -1) {\n                mline.splice(j, 1);\n                continue;\n            }\n            j++;\n        }\n        lines[mediaDesc.index] = mline.join(\" \");\n    }\n    return lines.join(\"\\r\\n\");\n};\nconst $864193eb0123b61a$var$stripMediaDescription = (sdp, description)=>{\n    const descriptionRegExp = new RegExp(\"m=\" + description + \".*$\", \"gm\");\n    const groupRegExp = new RegExp(\"^a=group:.*$\", \"gm\");\n    if (descriptionRegExp.test(sdp)) {\n        let midLineToRemove;\n        sdp = sdp.split(/^m=/gm).filter((section)=>{\n            if (section.substr(0, description.length) === description) {\n                midLineToRemove = section.match(/^a=mid:.*$/gm);\n                if (midLineToRemove) {\n                    const step = midLineToRemove[0].match(/:.+$/g);\n                    if (step) midLineToRemove = step[0].substr(1);\n                }\n                return false;\n            }\n            return true;\n        }).join(\"m=\");\n        const groupLine = sdp.match(groupRegExp);\n        if (groupLine && groupLine.length === 1) {\n            let groupLinePortion = groupLine[0];\n            // eslint-disable-next-line no-useless-escape\n            const groupRegExpReplace = new RegExp(\" *\" + midLineToRemove + \"[^ ]*\", \"g\");\n            groupLinePortion = groupLinePortion.replace(groupRegExpReplace, \"\");\n            sdp = sdp.split(groupRegExp).join(groupLinePortion);\n        }\n    }\n    return sdp;\n};\nfunction $864193eb0123b61a$export$ebbe22f70d5ea4d4(description) {\n    description.sdp = (description.sdp || \"\").replace(/^a=candidate:\\d+ \\d+ tcp .*?\\r\\n/img, \"\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$a1a26d1d338da5f7(description) {\n    description.sdp = $864193eb0123b61a$var$stripPayload(description.sdp || \"\", \"telephone-event\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$d098684501cab718(description) {\n    description.sdp = (description.sdp || \"\").replace(/^(a=imageattr:.*?)(x|y)=\\[0-/gm, \"$1$2=[1:\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$d6c901af15ec0d83(description) {\n    description.sdp = $864193eb0123b61a$var$stripPayload(description.sdp || \"\", \"G722\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$19eb739e3f606d2d(payload) {\n    return (description)=>{\n        description.sdp = $864193eb0123b61a$var$stripPayload(description.sdp || \"\", payload);\n        return Promise.resolve(description);\n    };\n}\nfunction $864193eb0123b61a$export$256854e96123f02b(description) {\n    description.sdp = $864193eb0123b61a$var$stripMediaDescription(description.sdp || \"\", \"video\");\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$9b507344359c196b(description) {\n    let sdp = description.sdp || \"\";\n    if (sdp.search(/^a=mid.*$/gm) === -1) {\n        const mlines = sdp.match(/^m=.*$/gm);\n        const sdpArray = sdp.split(/^m=.*$/gm);\n        if (mlines) mlines.forEach((elem, idx)=>{\n            mlines[idx] = elem + \"\\na=mid:\" + idx;\n        });\n        sdpArray.forEach((elem, idx)=>{\n            if (mlines && mlines[idx]) sdpArray[idx] = elem + mlines[idx];\n        });\n        sdp = sdpArray.join(\"\");\n        description.sdp = sdp;\n    }\n    return Promise.resolve(description);\n}\nfunction $864193eb0123b61a$export$962a66d9233196f6(description) {\n    if (!description.sdp || !description.type) throw new Error(\"Invalid SDP\");\n    let sdp = description.sdp;\n    const type = description.type;\n    if (sdp) {\n        if (!/a=(sendrecv|sendonly|recvonly|inactive)/.test(sdp)) sdp = sdp.replace(/(m=[^\\r]*\\r\\n)/g, \"$1a=sendonly\\r\\n\");\n        else {\n            sdp = sdp.replace(/a=sendrecv\\r\\n/g, \"a=sendonly\\r\\n\");\n            sdp = sdp.replace(/a=recvonly\\r\\n/g, \"a=inactive\\r\\n\");\n        }\n    }\n    return Promise.resolve({\n        sdp: sdp,\n        type: type\n    });\n}\n\n\n$parcel$exportWildcard($afd7e7a9fe59c60f$exports, $864193eb0123b61a$exports);\n\n\nvar $b6727c6f0668df8e$exports = {};\n/**\n * A SessionDescriptionHandler for web browsers.\n * @packageDocumentation\n */ var $f1bd11e6eecfe5be$exports = {};\n\n$parcel$export($f1bd11e6eecfe5be$exports, \"defaultMediaStreamFactory\", () => $f1bd11e6eecfe5be$export$1ffd34e85fb79026);\n/**\n * Function which returns a MediaStreamFactory.\n * @public\n */ function $f1bd11e6eecfe5be$export$1ffd34e85fb79026() {\n    return (constraints)=>{\n        // if no audio or video, return a media stream without tracks\n        if (!constraints.audio && !constraints.video) return Promise.resolve(new MediaStream());\n        // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n        // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n        // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n        // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n        if (navigator.mediaDevices === undefined) return Promise.reject(new Error(\"Media devices not available in insecure contexts.\"));\n        return navigator.mediaDevices.getUserMedia.call(navigator.mediaDevices, constraints);\n    };\n}\n\n\nvar $a53eddbe3defb51a$exports = {};\n\n\nvar $48c43aaa2d64dacd$exports = {};\n\n$parcel$export($48c43aaa2d64dacd$exports, \"defaultPeerConnectionConfiguration\", () => $48c43aaa2d64dacd$export$4ffaee600e913aea);\n/**\n * Function which returns an RTCConfiguration.\n * @public\n */ function $48c43aaa2d64dacd$export$4ffaee600e913aea() {\n    const configuration = {\n        bundlePolicy: \"balanced\",\n        certificates: undefined,\n        iceCandidatePoolSize: 0,\n        iceServers: [\n            {\n                urls: \"stun:stun.l.google.com:19302\"\n            }\n        ],\n        iceTransportPolicy: \"all\",\n        rtcpMuxPolicy: \"require\"\n    };\n    return configuration;\n}\n\n\nvar $a76119fc66d0a494$exports = {};\n\n\nvar $8f7ddb74cb4364bb$exports = {};\n\n\nvar $1fb45aa3bdfbf189$exports = {};\n\n$parcel$export($1fb45aa3bdfbf189$exports, \"defaultSessionDescriptionHandlerFactory\", () => $1fb45aa3bdfbf189$export$882edbaac6eb455);\n\n\nvar $744f32b2d87f082d$exports = {};\n\n$parcel$export($744f32b2d87f082d$exports, \"SessionDescriptionHandler\", () => $744f32b2d87f082d$export$4d703fa87dd9817a);\n/**\n * A base class implementing a WebRTC session description handler for sip.js.\n * @remarks\n * It is expected/intended to be extended by specific WebRTC based applications.\n * @privateRemarks\n * So do not put application specific implementation in here.\n * @public\n */ class $744f32b2d87f082d$export$4d703fa87dd9817a {\n    /**\n     * Constructor\n     * @param logger - A logger\n     * @param mediaStreamFactory - A factory to provide a MediaStream\n     * @param options - Options passed from the SessionDescriptionHandleFactory\n     */ constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration){\n        logger.debug(\"SessionDescriptionHandler.constructor\");\n        this.logger = logger;\n        this.mediaStreamFactory = mediaStreamFactory;\n        this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n        this._localMediaStream = new MediaStream();\n        this._remoteMediaStream = new MediaStream();\n        this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration === null || sessionDescriptionHandlerConfiguration === void 0 ? void 0 : sessionDescriptionHandlerConfiguration.peerConnectionConfiguration);\n        this.initPeerConnectionEventHandlers();\n    }\n    /**\n     * The local media stream currently being sent.\n     *\n     * @remarks\n     * The local media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * local media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */ get localMediaStream() {\n        return this._localMediaStream;\n    }\n    /**\n     * The remote media stream currently being received.\n     *\n     * @remarks\n     * The remote media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * remote media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */ get remoteMediaStream() {\n        return this._remoteMediaStream;\n    }\n    /**\n     * The data channel. Undefined before it is created.\n     */ get dataChannel() {\n        return this._dataChannel;\n    }\n    /**\n     * The peer connection. Undefined if peer connection has closed.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```ts\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * While access to the underlying `RTCPeerConnection` is provided, note that\n     * using methods which modify it may break the operation of this class.\n     * In particular, this class depends on exclusive access to the\n     * event handler properties. If you need access to the peer connection\n     * events, either register for events using `addEventListener()` on\n     * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n     * this `SessionDescriptionHandler`.\n     */ get peerConnection() {\n        return this._peerConnection;\n    }\n    /**\n     * A delegate which provides access to the peer connection event handlers.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * Setting the peer connection event handlers directly is not supported\n     * and may break this class. As this class depends on exclusive access\n     * to them. This delegate is intended to provide access to the\n     * RTCPeerConnection events in a fashion which is supported.\n     */ get peerConnectionDelegate() {\n        return this._peerConnectionDelegate;\n    }\n    set peerConnectionDelegate(delegate) {\n        this._peerConnectionDelegate = delegate;\n    }\n    // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n    static dispatchAddTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"addtrack\", {\n            track: track\n        }));\n    }\n    // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n    static dispatchRemoveTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"removetrack\", {\n            track: track\n        }));\n    }\n    /**\n     * Stop tracks and close peer connection.\n     */ close() {\n        this.logger.debug(\"SessionDescriptionHandler.close\");\n        if (this._peerConnection === undefined) return;\n        this._peerConnection.getReceivers().forEach((receiver)=>{\n            receiver.track && receiver.track.stop();\n        });\n        this._peerConnection.getSenders().forEach((sender)=>{\n            sender.track && sender.track.stop();\n        });\n        if (this._dataChannel) this._dataChannel.close();\n        this._peerConnection.close();\n        this._peerConnection = undefined;\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */ enableReceiverTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) throw new Error(\"Peer connection closed.\");\n        peerConnection.getReceivers().forEach((receiver)=>{\n            if (receiver.track) receiver.track.enabled = enable;\n        });\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */ enableSenderTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) throw new Error(\"Peer connection closed.\");\n        peerConnection.getSenders().forEach((sender)=>{\n            if (sender.track) sender.track.enabled = enable;\n        });\n    }\n    /**\n     * Creates an offer or answer.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */ getDescription(options, modifiers) {\n        var _a, _b;\n        this.logger.debug(\"SessionDescriptionHandler.getDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // ICE will restart upon applying an offer created with the iceRestart option\n        const iceRestart = (_a = options === null || options === void 0 ? void 0 : options.offerOptions) === null || _a === void 0 ? void 0 : _a.iceRestart;\n        // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n        const iceTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) === undefined ? (_b = this.sessionDescriptionHandlerConfiguration) === null || _b === void 0 ? void 0 : _b.iceGatheringTimeout : options === null || options === void 0 ? void 0 : options.iceGatheringTimeout;\n        return this.getLocalMediaStream(options).then(()=>this.updateDirection(options)).then(()=>this.createDataChannel(options)).then(()=>this.createLocalOfferOrAnswer(options)).then((sessionDescription)=>this.applyModifiers(sessionDescription, modifiers)).then((sessionDescription)=>this.setLocalSessionDescription(sessionDescription)).then(()=>this.waitForIceGatheringComplete(iceRestart, iceTimeout)).then(()=>this.getLocalSessionDescription()).then((sessionDescription)=>{\n            return {\n                body: sessionDescription.sdp,\n                contentType: \"application/sdp\"\n            };\n        }).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.getDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n     * @param contentType - The content type that is in the SIP Message.\n     */ hasDescription(contentType) {\n        this.logger.debug(\"SessionDescriptionHandler.hasDescription\");\n        return contentType === \"application/sdp\";\n    }\n    /**\n     * Called when ICE gathering completes and resolves any waiting promise.\n     * @remarks\n     * May be called prior to ICE gathering actually completing to allow the\n     * session descirption handler proceed with whatever candidates have been\n     * gathered up to this point in time. Use this to stop waiting on ICE to\n     * complete if you are implementing your own ICE gathering completion strategy.\n     */ iceGatheringComplete() {\n        this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete\");\n        // clear timer if need be\n        if (this.iceGatheringCompleteTimeoutId !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - clearing timeout\");\n            clearTimeout(this.iceGatheringCompleteTimeoutId);\n            this.iceGatheringCompleteTimeoutId = undefined;\n        }\n        // resolve and cleanup promise if need be\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - resolving promise\");\n            this.iceGatheringCompleteResolve && this.iceGatheringCompleteResolve();\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n    }\n    /**\n     * Send DTMF via RTP (RFC 4733).\n     * Returns true if DTMF send is successful, false otherwise.\n     * @param tones - A string containing DTMF digits.\n     * @param options - Options object to be used by sendDtmf.\n     */ sendDtmf(tones, options) {\n        this.logger.debug(\"SessionDescriptionHandler.sendDtmf\");\n        if (this._peerConnection === undefined) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - peer connection closed\");\n            return false;\n        }\n        const senders = this._peerConnection.getSenders();\n        if (senders.length === 0) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no senders\");\n            return false;\n        }\n        const dtmfSender = senders[0].dtmf;\n        if (!dtmfSender) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no DTMF sender\");\n            return false;\n        }\n        const duration = options === null || options === void 0 ? void 0 : options.duration;\n        const interToneGap = options === null || options === void 0 ? void 0 : options.interToneGap;\n        try {\n            dtmfSender.insertDTMF(tones, duration, interToneGap);\n        } catch (e) {\n            this.logger.error(e.toString());\n            return false;\n        }\n        this.logger.log(\"SessionDescriptionHandler.sendDtmf sent via RTP: \" + tones.toString());\n        return true;\n    }\n    /**\n     * Sets an offer or answer.\n     * @param sdp - The session description.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */ setDescription(sdp, options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.setDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // SDP type\n        const type = this._peerConnection.signalingState === \"have-local-offer\" ? \"answer\" : \"offer\";\n        return this.getLocalMediaStream(options).then(()=>this.applyModifiers({\n                sdp: sdp,\n                type: type\n            }, modifiers)).then((sessionDescription)=>this.setRemoteSessionDescription(sessionDescription)).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.setDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Applies modifiers to SDP prior to setting the local or remote description.\n     * @param sdp - SDP to modify.\n     * @param modifiers - Modifiers to apply.\n     */ applyModifiers(sdp, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.applyModifiers\");\n        if (!modifiers || modifiers.length === 0) return Promise.resolve(sdp);\n        return modifiers.reduce((cur, next)=>cur.then(next), Promise.resolve(sdp)).then((modified)=>{\n            this.logger.debug(\"SessionDescriptionHandler.applyModifiers - modified sdp\");\n            if (!modified.sdp || !modified.type) throw new Error(\"Invalid SDP.\");\n            return {\n                sdp: modified.sdp,\n                type: modified.type\n            };\n        });\n    }\n    /**\n     * Create a data channel.\n     * @remarks\n     * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n     * Only creates a data channel if creating a local offer.\n     * Only if one does not already exist.\n     * @param options - Session description handler options.\n     */ createDataChannel(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // only create a data channel if requested\n        if ((options === null || options === void 0 ? void 0 : options.dataChannel) !== true) return Promise.resolve();\n        // do not create a data channel if we already have one\n        if (this._dataChannel) return Promise.resolve();\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer so create a data channel\n                this.logger.debug(\"SessionDescriptionHandler.createDataChannel - creating data channel\");\n                try {\n                    this._dataChannel = this._peerConnection.createDataChannel((options === null || options === void 0 ? void 0 : options.dataChannelLabel) || \"\", options === null || options === void 0 ? void 0 : options.dataChannelOptions);\n                    if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n                    return Promise.resolve();\n                } catch (error) {\n                    return Promise.reject(error);\n                }\n            case \"have-remote-offer\":\n                return Promise.resolve();\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Depending on current signaling state, create a local offer or answer.\n     * @param options - Session description handler options.\n     */ createLocalOfferOrAnswer(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer\");\n                return this._peerConnection.createOffer(options === null || options === void 0 ? void 0 : options.offerOptions);\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer\");\n                return this._peerConnection.createAnswer(options === null || options === void 0 ? void 0 : options.answerOptions);\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Get a media stream from the media stream factory and set the local media stream.\n     * @param options - Session description handler options.\n     */ getLocalMediaStream(options) {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalMediaStream\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        let constraints = Object.assign({}, options === null || options === void 0 ? void 0 : options.constraints);\n        // if we already have a local media stream...\n        if (this.localMediaStreamConstraints) {\n            // ignore constraint \"downgrades\"\n            constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n            constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n            // if constraints have not changed, do not get a new media stream\n            if (JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) && JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)) return Promise.resolve();\n        } else // if no constraints have been specified, default to audio for initial media stream\n        if (constraints.audio === undefined && constraints.video === undefined) constraints = {\n            audio: true\n        };\n        this.localMediaStreamConstraints = constraints;\n        return this.mediaStreamFactory(constraints, this, options).then((mediaStream)=>this.setLocalMediaStream(mediaStream));\n    }\n    /**\n     * Sets the peer connection's sender tracks and local media stream tracks.\n     *\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param stream - Media stream containing tracks to be utilized.\n     */ setLocalMediaStream(stream) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalMediaStream\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const pc = this._peerConnection;\n        const localStream = this._localMediaStream;\n        const trackUpdates = [];\n        const updateTrack = (newTrack)=>{\n            const kind = newTrack.kind;\n            if (kind !== \"audio\" && kind !== \"video\") throw new Error(`Unknown new track kind ${kind}.`);\n            const sender = pc.getSenders().find((sender)=>sender.track && sender.track.kind === kind);\n            if (sender) trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n                resolve();\n            }).then(()=>sender.replaceTrack(newTrack).then(()=>{\n                    const oldTrack = localStream.getTracks().find((localTrack)=>localTrack.kind === kind);\n                    if (oldTrack) {\n                        oldTrack.stop();\n                        localStream.removeTrack(oldTrack);\n                        $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(localStream, oldTrack);\n                    }\n                    localStream.addTrack(newTrack);\n                    $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n                }).catch((error)=>{\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`);\n                    throw error;\n                })));\n            else trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n                resolve();\n            }).then(()=>{\n                // Review: could make streamless tracks a configurable option?\n                // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n                try {\n                    pc.addTrack(newTrack, localStream);\n                } catch (error) {\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n                    throw error;\n                }\n                localStream.addTrack(newTrack);\n                $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n            }));\n        };\n        // update peer connection audio tracks\n        const audioTracks = stream.getAudioTracks();\n        if (audioTracks.length) updateTrack(audioTracks[0]);\n        // update peer connection video tracks\n        const videoTracks = stream.getVideoTracks();\n        if (videoTracks.length) updateTrack(videoTracks[0]);\n        return trackUpdates.reduce((p, x)=>p.then(()=>x), Promise.resolve());\n    }\n    /**\n     * Gets the peer connection's local session description.\n     */ getLocalSessionDescription() {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = this._peerConnection.localDescription;\n        if (!sdp) return Promise.reject(new Error(\"Failed to get local session description\"));\n        return Promise.resolve(sdp);\n    }\n    /**\n     * Sets the peer connection's local session description.\n     * @param sessionDescription - sessionDescription The session description.\n     */ setLocalSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        return this._peerConnection.setLocalDescription(sessionDescription);\n    }\n    /**\n     * Sets the peer connection's remote session description.\n     * @param sessionDescription - The session description.\n     */ setRemoteSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = sessionDescription.sdp;\n        let type;\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable assume this is a remote offer\n                type = \"offer\";\n                break;\n            case \"have-local-offer\":\n                // if we made an offer, assume this is a remote answer\n                type = \"answer\";\n                break;\n            case \"have-local-pranswer\":\n            case \"have-remote-offer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        if (!sdp) {\n            this.logger.error(\"SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp\");\n            return Promise.reject(new Error(\"SDP is undefined\"));\n        }\n        return this._peerConnection.setRemoteDescription({\n            sdp: sdp,\n            type: type\n        });\n    }\n    /**\n     * Sets a remote media stream track.\n     *\n     * @remarks\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param track - Media stream track to be utilized.\n     */ setRemoteTrack(track) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteTrack\");\n        const remoteStream = this._remoteMediaStream;\n        if (remoteStream.getTrackById(track.id)) this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n        else if (track.kind === \"audio\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getAudioTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        } else if (track.kind === \"video\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getVideoTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $744f32b2d87f082d$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        }\n    }\n    /**\n     * Depending on the current signaling state and the session hold state, update transceiver direction.\n     * @param options - Session description handler options.\n     */ updateDirection(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // 4.2.3.  setDirection\n        //\n        //    The setDirection method sets the direction of a transceiver, which\n        //    affects the direction property of the associated \"m=\" section on\n        //    future calls to createOffer and createAnswer.  The permitted values\n        //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n        //    mirroring the identically named direction attributes defined in\n        //    [RFC4566], Section 6.\n        //\n        //    When creating offers, the transceiver direction is directly reflected\n        //    in the output, even for re-offers.  When creating answers, the\n        //    transceiver direction is intersected with the offered direction, as\n        //    explained in Section 5.3 below.\n        //\n        //    Note that while setDirection sets the direction property of the\n        //    transceiver immediately (Section 4.2.4), this property does not\n        //    immediately affect whether the transceiver's RtpSender will send or\n        //    its RtpReceiver will receive.  The direction in effect is represented\n        //    by the currentDirection property, which is only updated when an\n        //    answer is applied.\n        //\n        // 4.2.4.  direction\n        //\n        //    The direction property indicates the last value passed into\n        //    setDirection.  If setDirection has never been called, it is set to\n        //    the direction the transceiver was initialized with.\n        //\n        // 4.2.5.  currentDirection\n        //\n        //    The currentDirection property indicates the last negotiated direction\n        //    for the transceiver's associated \"m=\" section.  More specifically, it\n        //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n        //    section in the last applied answer (including provisional answers),\n        //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n        //    For example, if the direction attribute for the associated \"m=\"\n        //    section in a remote answer is \"recvonly\", currentDirection is set to\n        //    \"sendonly\".\n        //\n        //    If an answer that references this transceiver has not yet been\n        //    applied or if the transceiver is stopped, currentDirection is set to\n        //    \"null\".\n        //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n        //\n        // *  A direction attribute, determined by applying the rules regarding\n        //    the offered direction specified in [RFC3264], Section 6.1, and\n        //    then intersecting with the direction of the associated\n        //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n        //    offered as \"sendonly\" and the local transceiver is set to\n        //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n        // https://tools.ietf.org/html/rfc8829#section-5.3.1\n        //\n        // If a stream is offered as sendonly, the corresponding stream MUST be\n        // marked as recvonly or inactive in the answer.  If a media stream is\n        // listed as recvonly in the offer, the answer MUST be marked as\n        // sendonly or inactive in the answer.  If an offered media stream is\n        // listed as sendrecv (or if there is no direction attribute at the\n        // media or session level, in which case the stream is sendrecv by\n        // default), the corresponding stream in the answer MAY be marked as\n        // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n        // stream is listed as inactive, it MUST be marked as inactive in the\n        // answer.\n        // https://tools.ietf.org/html/rfc3264#section-6.1\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting offer direction\");\n                {\n                    // determine the direction to offer given the current direction and hold state\n                    const directionToOffer = (currentDirection)=>{\n                        switch(currentDirection){\n                            case \"inactive\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"recvonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"stopped\":\n                                return \"stopped\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    };\n                    // set the transceiver direction to the offer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            const offerDirection = directionToOffer(transceiver.direction);\n                            if (transceiver.direction !== offerDirection) transceiver.direction = offerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting answer direction\");\n                // FIXME: This is not the correct way to determine the answer direction as it is only\n                // considering first match in the offered SDP and using that to determine the answer direction.\n                // While that may be fine for our current use cases, it is not a generally correct approach.\n                {\n                    // determine the offered direction\n                    const offeredDirection = (()=>{\n                        const description = this._peerConnection.remoteDescription;\n                        if (!description) throw new Error(\"Failed to read remote offer\");\n                        const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n                        if (searchResult) switch(searchResult[0]){\n                            case \"a=inactive\\r\\n\":\n                                return \"inactive\";\n                            case \"a=recvonly\\r\\n\":\n                                return \"recvonly\";\n                            case \"a=sendonly\\r\\n\":\n                                return \"sendonly\";\n                            case \"a=sendrecv\\r\\n\":\n                                return \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                        return \"sendrecv\";\n                    })();\n                    // determine the answer direction based on the offered direction and our hold state\n                    const answerDirection = (()=>{\n                        switch(offeredDirection){\n                            case \"inactive\":\n                                return \"inactive\";\n                            case \"recvonly\":\n                                return \"sendonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    })();\n                    // set the transceiver direction to the answer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            if (transceiver.direction !== \"stopped\" && transceiver.direction !== answerDirection) transceiver.direction = answerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Wait for ICE gathering to complete.\n     * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n     * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n     */ waitForIceGatheringComplete(restart = false, timeout = 0) {\n        this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete\");\n        if (this._peerConnection === undefined) return Promise.reject(\"Peer connection closed.\");\n        // guard already complete\n        if (!restart && this._peerConnection.iceGatheringState === \"complete\") {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - already complete\");\n            return Promise.resolve();\n        }\n        // only one may be waiting, reject any prior\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise\");\n            this.iceGatheringCompleteReject && this.iceGatheringCompleteReject(new Error(\"Promise superseded.\"));\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n        this.iceGatheringCompletePromise = new Promise((resolve, reject)=>{\n            this.iceGatheringCompleteResolve = resolve;\n            this.iceGatheringCompleteReject = reject;\n            if (timeout > 0) {\n                this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in \" + timeout);\n                this.iceGatheringCompleteTimeoutId = setTimeout(()=>{\n                    this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout\");\n                    this.iceGatheringComplete();\n                }, timeout);\n            }\n        });\n        return this.iceGatheringCompletePromise;\n    }\n    /**\n     * Initializes the peer connection event handlers\n     */ initPeerConnectionEventHandlers() {\n        this.logger.debug(\"SessionDescriptionHandler.initPeerConnectionEventHandlers\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const peerConnection = this._peerConnection;\n        peerConnection.onconnectionstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.connectionState;\n            this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onconnectionstatechange) this._peerConnectionDelegate.onconnectionstatechange(event);\n        };\n        peerConnection.ondatachannel = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.ondatachannel`);\n            this._dataChannel = event.channel;\n            if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ondatachannel) this._peerConnectionDelegate.ondatachannel(event);\n        };\n        peerConnection.onicecandidate = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidate`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidate) this._peerConnectionDelegate.onicecandidate(event);\n        };\n        peerConnection.onicecandidateerror = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidateerror`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidateerror) this._peerConnectionDelegate.onicecandidateerror(event);\n        };\n        peerConnection.oniceconnectionstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.iceConnectionState;\n            this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.oniceconnectionstatechange) this._peerConnectionDelegate.oniceconnectionstatechange(event);\n        };\n        peerConnection.onicegatheringstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.iceGatheringState;\n            this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n            if (newState === \"complete\") this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicegatheringstatechange) this._peerConnectionDelegate.onicegatheringstatechange(event);\n        };\n        peerConnection.onnegotiationneeded = (event)=>{\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onnegotiationneeded`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onnegotiationneeded) this._peerConnectionDelegate.onnegotiationneeded(event);\n        };\n        peerConnection.onsignalingstatechange = (event)=>{\n            var _a;\n            const newState = peerConnection.signalingState;\n            this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onsignalingstatechange) this._peerConnectionDelegate.onsignalingstatechange(event);\n        };\n        peerConnection.ontrack = (event)=>{\n            var _a;\n            const kind = event.track.kind;\n            const enabled = event.track.enabled ? \"enabled\" : \"disabled\";\n            this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n            this.setRemoteTrack(event.track);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ontrack) this._peerConnectionDelegate.ontrack(event);\n        };\n    }\n}\n\n\nfunction $1fb45aa3bdfbf189$export$882edbaac6eb455(mediaStreamFactory) {\n    return (session, options)=>{\n        // provide a default media stream factory if need be\n        if (mediaStreamFactory === undefined) mediaStreamFactory = (0, $f1bd11e6eecfe5be$export$1ffd34e85fb79026)();\n        // make sure we allow `0` to be passed in so timeout can be disabled\n        const iceGatheringTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) !== undefined ? options === null || options === void 0 ? void 0 : options.iceGatheringTimeout : 5000;\n        // merge passed factory options into default session description configuration\n        const sessionDescriptionHandlerConfiguration = {\n            iceGatheringTimeout: iceGatheringTimeout,\n            peerConnectionConfiguration: Object.assign(Object.assign({}, (0, $48c43aaa2d64dacd$export$4ffaee600e913aea)()), options === null || options === void 0 ? void 0 : options.peerConnectionConfiguration)\n        };\n        const logger = session.userAgent.getLogger(\"sip.SessionDescriptionHandler\");\n        return new (0, $744f32b2d87f082d$export$4d703fa87dd9817a)(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n    };\n}\n\n\nvar $abeab00efa041895$exports = {};\n\n\nvar $c77c02486cfe71b5$exports = {};\n\n\nvar $8b7501600b5a917c$exports = {};\n\n\n\nvar $b8dd480cc004014a$exports = {};\n\n$parcel$export($b8dd480cc004014a$exports, \"startLocalConference\", () => $b8dd480cc004014a$export$730d0ecf036046df);\n$parcel$export($b8dd480cc004014a$exports, \"WebAudioSessionDescriptionHandler\", () => $b8dd480cc004014a$export$6a29fc62f7a13ada);\n\nfunction $b8dd480cc004014a$export$730d0ecf036046df(conferenceSessions) {\n    if (conferenceSessions.length < 2) throw new Error(\"Start local conference requires at leaast 2 sessions.\");\n    // Return all possible pairs of elements in an array.\n    const pairs = (arr)=>arr.map((v, i)=>arr.slice(i + 1).map((w)=>[\n                    v,\n                    w\n                ])).reduce((acc, curVal)=>acc.concat(curVal), []);\n    // For each pair of sessions making up the conference, join their media together.\n    // A session desciprion handler manages the media, streams and tracks for a session.\n    pairs(conferenceSessions.map((session)=>session.sessionDescriptionHandler)).forEach(([sdh0, sdh1])=>{\n        if (!(sdh0 instanceof $b8dd480cc004014a$export$6a29fc62f7a13ada && sdh1 instanceof $b8dd480cc004014a$export$6a29fc62f7a13ada)) throw new Error(\"Session description handler not instance of SessionManagerSessionDescriptionHandler\");\n        sdh0.joinWith(sdh1);\n    });\n}\nclass $b8dd480cc004014a$export$6a29fc62f7a13ada extends (0, $744f32b2d87f082d$export$4d703fa87dd9817a) {\n    constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration){\n        super(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext = new AudioContext();\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks.\n     */ enableSenderTracks(enable) {\n        // This session decription handler is not using the original outbound (local) media stream source\n        // and has instead inserted a Web Audio proxy media stream to allow conferencing and mixing of stream.\n        // So here, we only want to mute the original source and not the proxy as it may be mixing other\n        // sources into the outbound stream and we do not want to enable/disable those. We only want to\n        // enable/disable the original stream source so that it's media gets muted/unmuted going to the proxy.\n        const stream = this.localMediaStreamReal;\n        if (stream === undefined) throw new Error(\"Stream undefined.\");\n        stream.getAudioTracks().forEach((track)=>{\n            track.enabled = enable;\n        });\n    }\n    /**\n     * Returns a WebRTC MediaStream proxying the provided audio media stream.\n     * This allows additional Web Audio media stream source nodes to be connected\n     * to the destination node assoicated with the returned stream so we can mix\n     * aditional audio sorces into the local media stream (ie for 3-way conferencing).\n     * @param stream - The MediaStream to proxy.\n     */ initLocalMediaStream(stream) {\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamDestinationNode = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamDestination();\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n        return this.localMediaStreamDestinationNode.stream;\n    }\n    /**\n     * Join (conference) media streams with another party.\n     * @param peer - The session description handler of the peer to join with.\n     */ joinWith(peer) {\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        // Mix our inbound (remote) stream into the peer's outbound (local) streams.\n        const ourNewInboundStreamSource = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(this.remoteMediaStream);\n        const peerOutboundStreamDestination = peer.localMediaStreamDestinationNode;\n        if (peerOutboundStreamDestination === undefined) throw new Error(\"Peer outbound (local) stream local media stream destination is undefined.\");\n        ourNewInboundStreamSource.connect(peerOutboundStreamDestination);\n        // Mix the peer's inbound (remote) streams into our outbound (local) stream.\n        const peerNewInboundStreamSource = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(peer.remoteMediaStream);\n        const ourOutboundStreamDestination = this.localMediaStreamDestinationNode;\n        if (ourOutboundStreamDestination === undefined) throw new Error(\"Our outbound (local) stream local media stream destination is undefined.\");\n        peerNewInboundStreamSource.connect(ourOutboundStreamDestination);\n    }\n    /**\n     * Sets the original local media stream.\n     * @param stream - Media stream containing tracks to be utilized.\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     */ setRealLocalMediaStream(stream) {\n        if (!$b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext) throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        if (!this.localMediaStreamReal) {\n            this.initLocalMediaStream(stream);\n            return;\n        }\n        if (!this.localMediaStreamDestinationNode || !this.localMediaStreamSourceNode || !this.localMediaStreamReal) throw new Error(\"Local media stream undefined.\");\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode.disconnect(this.localMediaStreamDestinationNode);\n        this.localMediaStreamSourceNode = $b8dd480cc004014a$export$6a29fc62f7a13ada.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n    }\n}\n\n\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $f1bd11e6eecfe5be$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $a53eddbe3defb51a$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $48c43aaa2d64dacd$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $a76119fc66d0a494$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $8f7ddb74cb4364bb$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $1fb45aa3bdfbf189$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $abeab00efa041895$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $c77c02486cfe71b5$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $8b7501600b5a917c$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $744f32b2d87f082d$exports);\n$parcel$exportWildcard($b6727c6f0668df8e$exports, $b8dd480cc004014a$exports);\n\n\nvar $a37506df75e7b770$exports = {};\nvar $6dd294c5c57173ab$exports = {};\n\n$parcel$export($6dd294c5c57173ab$exports, \"defaultManagedSessionFactory\", () => $6dd294c5c57173ab$export$9c571c3c8f631dc5);\n/**\n * Function which returns a ManagedSessionFactory.\n * @public\n */ function $6dd294c5c57173ab$export$9c571c3c8f631dc5() {\n    return (sessionManager, session)=>{\n        return {\n            session: session,\n            held: false,\n            muted: false\n        };\n    };\n}\n\n\nvar $2f3039e766a741e2$exports = {};\n\n\nvar $604c8363074a1f2a$exports = {};\n\n\nvar $90f33367fbfb4ac7$exports = {};\n\n\nvar $6a48556e30a930bb$exports = {};\n\n\nvar $d5859fd1c29de512$exports = {};\n\n$parcel$export($d5859fd1c29de512$exports, \"SessionManager\", () => $d5859fd1c29de512$export$415798a788f40554);\n/* eslint-disable @typescript-eslint/no-namespace */ /* eslint-disable no-inner-declarations */ /**\n * @internal\n */ class $1917324720dacad5$export$3306d411ac0d2657 {\n    constructor(parameters){\n        this.parameters = {};\n        // for in is required here as the Grammar parser is adding to the prototype chain\n        for(const param in parameters)// eslint-disable-next-line no-prototype-builtins\n        if (parameters.hasOwnProperty(param)) this.setParam(param, parameters[param]);\n    }\n    setParam(key, value) {\n        if (key) this.parameters[key.toLowerCase()] = typeof value === \"undefined\" || value === null ? null : value.toString();\n    }\n    getParam(key) {\n        if (key) return this.parameters[key.toLowerCase()];\n    }\n    hasParam(key) {\n        return !!(key && this.parameters[key.toLowerCase()] !== undefined);\n    }\n    deleteParam(key) {\n        key = key.toLowerCase();\n        if (this.hasParam(key)) {\n            const value = this.parameters[key];\n            delete this.parameters[key];\n            return value;\n        }\n    }\n    clearParams() {\n        this.parameters = {};\n    }\n}\n\n\nclass $b62549b966a08c5b$export$426a8f49e69dc5fe extends (0, $1917324720dacad5$export$3306d411ac0d2657) {\n    /**\n     * Constructor\n     * @param uri -\n     * @param displayName -\n     * @param parameters -\n     */ constructor(uri, displayName, parameters){\n        super(parameters);\n        this.uri = uri;\n        this._displayName = displayName;\n    }\n    get friendlyName() {\n        return this.displayName || this.uri.aor;\n    }\n    get displayName() {\n        return this._displayName;\n    }\n    set displayName(value) {\n        this._displayName = value;\n    }\n    clone() {\n        return new $b62549b966a08c5b$export$426a8f49e69dc5fe(this.uri.clone(), this._displayName, JSON.parse(JSON.stringify(this.parameters)));\n    }\n    toString() {\n        let body = this.displayName || this.displayName === \"0\" ? '\"' + this.displayName + '\" ' : \"\";\n        body += \"<\" + this.uri.toString() + \">\";\n        for(const parameter in this.parameters)// eslint-disable-next-line no-prototype-builtins\n        if (this.parameters.hasOwnProperty(parameter)) {\n            body += \";\" + parameter;\n            if (this.parameters[parameter] !== null) body += \"=\" + this.parameters[parameter];\n        }\n        return body;\n    }\n}\n\n\n/* eslint-disable @typescript-eslint/no-explicit-any */ \nclass $dbdae61072997c03$export$9156e739aa33e19f extends (0, $1917324720dacad5$export$3306d411ac0d2657) {\n    /**\n     * Constructor\n     * @param scheme -\n     * @param user -\n     * @param host -\n     * @param port -\n     * @param parameters -\n     * @param headers -\n     */ constructor(scheme = \"sip\", user, host, port, parameters, headers){\n        super(parameters || {});\n        this.headers = {};\n        // Checks\n        if (!host) throw new TypeError('missing or invalid \"host\" parameter');\n        for(const header in headers)// eslint-disable-next-line no-prototype-builtins\n        if (headers.hasOwnProperty(header)) this.setHeader(header, headers[header]);\n        // Raw URI\n        this.raw = {\n            scheme: scheme,\n            user: user,\n            host: host,\n            port: port\n        };\n        // Normalized URI\n        this.normal = {\n            scheme: scheme.toLowerCase(),\n            user: user,\n            host: host.toLowerCase(),\n            port: port\n        };\n    }\n    get scheme() {\n        return this.normal.scheme;\n    }\n    set scheme(value) {\n        this.raw.scheme = value;\n        this.normal.scheme = value.toLowerCase();\n    }\n    get user() {\n        return this.normal.user;\n    }\n    set user(value) {\n        this.normal.user = this.raw.user = value;\n    }\n    get host() {\n        return this.normal.host;\n    }\n    set host(value) {\n        this.raw.host = value;\n        this.normal.host = value.toLowerCase();\n    }\n    get aor() {\n        return this.normal.user + \"@\" + this.normal.host;\n    }\n    get port() {\n        return this.normal.port;\n    }\n    set port(value) {\n        this.normal.port = this.raw.port = value === 0 ? value : value;\n    }\n    setHeader(name, value) {\n        this.headers[this.headerize(name)] = value instanceof Array ? value : [\n            value\n        ];\n    }\n    getHeader(name) {\n        if (name) return this.headers[this.headerize(name)];\n    }\n    hasHeader(name) {\n        // eslint-disable-next-line no-prototype-builtins\n        return !!name && !!this.headers.hasOwnProperty(this.headerize(name));\n    }\n    deleteHeader(header) {\n        header = this.headerize(header);\n        // eslint-disable-next-line no-prototype-builtins\n        if (this.headers.hasOwnProperty(header)) {\n            const value = this.headers[header];\n            delete this.headers[header];\n            return value;\n        }\n    }\n    clearHeaders() {\n        this.headers = {};\n    }\n    clone() {\n        return new $dbdae61072997c03$export$9156e739aa33e19f(this._raw.scheme, this._raw.user || \"\", this._raw.host, this._raw.port, JSON.parse(JSON.stringify(this.parameters)), JSON.parse(JSON.stringify(this.headers)));\n    }\n    toRaw() {\n        return this._toString(this._raw);\n    }\n    toString() {\n        return this._toString(this._normal);\n    }\n    get _normal() {\n        return this.normal;\n    }\n    get _raw() {\n        return this.raw;\n    }\n    _toString(uri) {\n        let uriString = uri.scheme + \":\";\n        // add slashes if it's not a sip(s) URI\n        if (!uri.scheme.toLowerCase().match(\"^sips?$\")) uriString += \"//\";\n        if (uri.user) uriString += this.escapeUser(uri.user) + \"@\";\n        uriString += uri.host;\n        if (uri.port || uri.port === 0) uriString += \":\" + uri.port;\n        for(const parameter in this.parameters)// eslint-disable-next-line no-prototype-builtins\n        if (this.parameters.hasOwnProperty(parameter)) {\n            uriString += \";\" + parameter;\n            if (this.parameters[parameter] !== null) uriString += \"=\" + this.parameters[parameter];\n        }\n        const headers = [];\n        for(const header in this.headers)// eslint-disable-next-line no-prototype-builtins\n        if (this.headers.hasOwnProperty(header)) {\n            // eslint-disable-next-line @typescript-eslint/no-for-in-array\n            for(const idx in this.headers[header])// eslint-disable-next-line no-prototype-builtins\n            if (this.headers[header].hasOwnProperty(idx)) headers.push(header + \"=\" + this.headers[header][idx]);\n        }\n        if (headers.length > 0) uriString += \"?\" + headers.join(\"&\");\n        return uriString;\n    }\n    /*\n     * Hex-escape a SIP URI user.\n     * @private\n     * @param {String} user\n     */ escapeUser(user) {\n        let decodedUser;\n        // FIXME: This is called by toString above which should never throw, but\n        // decodeURIComponent can throw and I've seen one case in production where\n        // it did throw resulting in a cascading failure. This class should be\n        // fixed so that decodeURIComponent is not called at this point (in toString).\n        // The user should be decoded when the URI is constructor or some other\n        // place where we can catch the error before the URI is created or somesuch.\n        // eslint-disable-next-line no-useless-catch\n        try {\n            decodedUser = decodeURIComponent(user);\n        } catch (error) {\n            throw error;\n        }\n        // Don't hex-escape ':' (%3A), '+' (%2B), '?' (%3F\"), '/' (%2F).\n        return encodeURIComponent(decodedUser).replace(/%3A/ig, \":\").replace(/%2B/ig, \"+\").replace(/%3F/ig, \"?\").replace(/%2F/ig, \"/\");\n    }\n    headerize(str) {\n        const exceptions = {\n            \"Call-Id\": \"Call-ID\",\n            \"Cseq\": \"CSeq\",\n            \"Min-Se\": \"Min-SE\",\n            \"Rack\": \"RAck\",\n            \"Rseq\": \"RSeq\",\n            \"Www-Authenticate\": \"WWW-Authenticate\"\n        };\n        const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n        const parts = name.length;\n        let hname = \"\";\n        for(let part = 0; part < parts; part++){\n            if (part !== 0) hname += \"-\";\n            hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n        }\n        if (exceptions[hname]) hname = exceptions[hname];\n        return hname;\n    }\n}\nfunction $dbdae61072997c03$export$2cee8b57bfbd7333(a, b) {\n    // o  A SIP and SIPS URI are never equivalent.\n    if (a.scheme !== b.scheme) return false;\n    // o  Comparison of the userinfo of SIP and SIPS URIs is case-\n    //    sensitive.  This includes userinfo containing passwords or\n    //    formatted as telephone-subscribers.  Comparison of all other\n    //    components of the URI is case-insensitive unless explicitly\n    //    defined otherwise.\n    //\n    // o  The ordering of parameters and header fields is not significant\n    //    in comparing SIP and SIPS URIs.\n    //\n    // o  Characters other than those in the \"reserved\" set (see RFC 2396\n    //    [5]) are equivalent to their \"\"%\" HEX HEX\" encoding.\n    //\n    // o  An IP address that is the result of a DNS lookup of a host name\n    //    does not match that host name.\n    //\n    // o  For two URIs to be equal, the user, password, host, and port\n    //    components must match.\n    //\n    // A URI omitting the user component will not match a URI that\n    // includes one.  A URI omitting the password component will not\n    // match a URI that includes one.\n    //\n    // A URI omitting any component with a default value will not\n    // match a URI explicitly containing that component with its\n    // default value.  For instance, a URI omitting the optional port\n    // component will not match a URI explicitly declaring port 5060.\n    // The same is true for the transport-parameter, ttl-parameter,\n    // user-parameter, and method components.\n    //\n    // Defining sip:user@host to not be equivalent to\n    // sip:user@host:5060 is a change from RFC 2543.  When deriving\n    // addresses from URIs, equivalent addresses are expected from\n    // equivalent URIs.  The URI sip:user@host:5060 will always\n    // resolve to port 5060.  The URI sip:user@host may resolve to\n    // other ports through the DNS SRV mechanisms detailed in [4].\n    // FIXME: TODO:\n    // - character compared to hex encoding is not handled\n    // - password does not exist on URI currently\n    if (a.user !== b.user || a.host !== b.host || a.port !== b.port) return false;\n    // o  URI uri-parameter components are compared as follows:\n    function compareParameters(a, b) {\n        //  -  Any uri-parameter appearing in both URIs must match.\n        const parameterKeysA = Object.keys(a.parameters);\n        const parameterKeysB = Object.keys(b.parameters);\n        const intersection = parameterKeysA.filter((x)=>parameterKeysB.includes(x));\n        if (!intersection.every((key)=>a.parameters[key] === b.parameters[key])) return false;\n        //  -  A user, ttl, or method uri-parameter appearing in only one\n        //     URI never matches, even if it contains the default value.\n        if (![\n            \"user\",\n            \"ttl\",\n            \"method\",\n            \"transport\"\n        ].every((key)=>a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) return false;\n        //  -  A URI that includes an maddr parameter will not match a URI\n        //     that contains no maddr parameter.\n        if (![\n            \"maddr\"\n        ].every((key)=>a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) return false;\n        //  -  All other uri-parameters appearing in only one URI are\n        //     ignored when comparing the URIs.\n        return true;\n    }\n    if (!compareParameters(a, b)) return false;\n    // o  URI header components are never ignored.  Any present header\n    //    component MUST be present in both URIs and match for the URIs\n    //    to match.  The matching rules are defined for each header field\n    //    in Section 20.\n    const headerKeysA = Object.keys(a.headers);\n    const headerKeysB = Object.keys(b.headers);\n    // No need to check if no headers\n    if (headerKeysA.length !== 0 || headerKeysB.length !== 0) {\n        // Must have same number of headers\n        if (headerKeysA.length !== headerKeysB.length) return false;\n        // Must have same headers\n        const intersection = headerKeysA.filter((x)=>headerKeysB.includes(x));\n        if (intersection.length !== headerKeysB.length) return false;\n        // FIXME: Not to spec. But perhaps not worth fixing?\n        // Must have same header values\n        // It seems too much to consider multiple headers with same name.\n        // It seems too much to compare two header params according to the rule of each header.\n        // We'll assume a single header and compare them string to string...\n        if (!intersection.every((key)=>a.headers[key].length && b.headers[key].length && a.headers[key][0] === b.headers[key][0])) return false;\n    }\n    return true;\n}\n\n\nfunction $c65620b741f6e224$var$peg$padEnd(str, targetLength, padString) {\n    padString = padString || \" \";\n    if (str.length > targetLength) return str;\n    targetLength -= str.length;\n    padString += padString.repeat(targetLength);\n    return str + padString.slice(0, targetLength);\n}\nclass $c65620b741f6e224$export$f21cea08b0dd60e8 extends Error {\n    constructor(message, expected, found, location){\n        super();\n        this.message = message;\n        this.expected = expected;\n        this.found = found;\n        this.location = location;\n        this.name = \"SyntaxError\";\n        if (typeof Object.setPrototypeOf === \"function\") Object.setPrototypeOf(this, $c65620b741f6e224$export$f21cea08b0dd60e8.prototype);\n        else this.__proto__ = $c65620b741f6e224$export$f21cea08b0dd60e8.prototype;\n        if (typeof Error.captureStackTrace === \"function\") Error.captureStackTrace(this, $c65620b741f6e224$export$f21cea08b0dd60e8);\n    }\n    static buildMessage(expected, found) {\n        function hex(ch) {\n            return ch.charCodeAt(0).toString(16).toUpperCase();\n        }\n        function literalEscape(s) {\n            return s.replace(/\\\\/g, \"\\\\\\\\\").replace(/\"/g, '\\\\\"').replace(/\\0/g, \"\\\\0\").replace(/\\t/g, \"\\\\t\").replace(/\\n/g, \"\\\\n\").replace(/\\r/g, \"\\\\r\").replace(/[\\x00-\\x0F]/g, (ch)=>\"\\\\x0\" + hex(ch)).replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch)=>\"\\\\x\" + hex(ch));\n        }\n        function classEscape(s) {\n            return s.replace(/\\\\/g, \"\\\\\\\\\").replace(/\\]/g, \"\\\\]\").replace(/\\^/g, \"\\\\^\").replace(/-/g, \"\\\\-\").replace(/\\0/g, \"\\\\0\").replace(/\\t/g, \"\\\\t\").replace(/\\n/g, \"\\\\n\").replace(/\\r/g, \"\\\\r\").replace(/[\\x00-\\x0F]/g, (ch)=>\"\\\\x0\" + hex(ch)).replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch)=>\"\\\\x\" + hex(ch));\n        }\n        function describeExpectation(expectation) {\n            switch(expectation.type){\n                case \"literal\":\n                    return '\"' + literalEscape(expectation.text) + '\"';\n                case \"class\":\n                    const escapedParts = expectation.parts.map((part)=>{\n                        return Array.isArray(part) ? classEscape(part[0]) + \"-\" + classEscape(part[1]) : classEscape(part);\n                    });\n                    return \"[\" + (expectation.inverted ? \"^\" : \"\") + escapedParts + \"]\";\n                case \"any\":\n                    return \"any character\";\n                case \"end\":\n                    return \"end of input\";\n                case \"other\":\n                    return expectation.description;\n            }\n        }\n        function describeExpected(expected1) {\n            const descriptions = expected1.map(describeExpectation);\n            let i;\n            let j;\n            descriptions.sort();\n            if (descriptions.length > 0) {\n                for(i = 1, j = 1; i < descriptions.length; i++)if (descriptions[i - 1] !== descriptions[i]) {\n                    descriptions[j] = descriptions[i];\n                    j++;\n                }\n                descriptions.length = j;\n            }\n            switch(descriptions.length){\n                case 1:\n                    return descriptions[0];\n                case 2:\n                    return descriptions[0] + \" or \" + descriptions[1];\n                default:\n                    return descriptions.slice(0, -1).join(\", \") + \", or \" + descriptions[descriptions.length - 1];\n            }\n        }\n        function describeFound(found1) {\n            return found1 ? '\"' + literalEscape(found1) + '\"' : \"end of input\";\n        }\n        return \"Expected \" + describeExpected(expected) + \" but \" + describeFound(found) + \" found.\";\n    }\n    format(sources) {\n        let str = \"Error: \" + this.message;\n        if (this.location) {\n            let src = null;\n            let k;\n            for(k = 0; k < sources.length; k++)if (sources[k].source === this.location.source) {\n                src = sources[k].text.split(/\\r\\n|\\n|\\r/g);\n                break;\n            }\n            let s = this.location.start;\n            let loc = this.location.source + \":\" + s.line + \":\" + s.column;\n            if (src) {\n                let e = this.location.end;\n                let filler = $c65620b741f6e224$var$peg$padEnd(\"\", s.line.toString().length, \" \");\n                let line = src[s.line - 1];\n                let last = s.line === e.line ? e.column : line.length + 1;\n                str += \"\\n --> \" + loc + \"\\n\" + filler + \" |\\n\" + s.line + \" | \" + line + \"\\n\" + filler + \" | \" + $c65620b741f6e224$var$peg$padEnd(\"\", s.column - 1, \" \") + $c65620b741f6e224$var$peg$padEnd(\"\", last - s.column, \"^\");\n            } else str += \"\\n at \" + loc;\n        }\n        return str;\n    }\n}\nfunction $c65620b741f6e224$var$peg$parse(input, options) {\n    options = options !== undefined ? options : {};\n    const peg$FAILED = {};\n    const peg$source = options.grammarSource;\n    const peg$startRuleIndices = {\n        Contact: 119,\n        Name_Addr_Header: 156,\n        Record_Route: 176,\n        Request_Response: 81,\n        SIP_URI: 45,\n        Subscription_State: 186,\n        Supported: 191,\n        Require: 182,\n        Via: 194,\n        absoluteURI: 84,\n        Call_ID: 118,\n        Content_Disposition: 130,\n        Content_Length: 135,\n        Content_Type: 136,\n        CSeq: 146,\n        displayName: 122,\n        Event: 149,\n        From: 151,\n        host: 52,\n        Max_Forwards: 154,\n        Min_SE: 213,\n        Proxy_Authenticate: 157,\n        quoted_string: 40,\n        Refer_To: 178,\n        Replaces: 179,\n        Session_Expires: 210,\n        stun_URI: 217,\n        To: 192,\n        turn_URI: 223,\n        uuid: 226,\n        WWW_Authenticate: 209,\n        challenge: 158,\n        sipfrag: 230,\n        Referred_By: 231\n    };\n    let peg$startRuleIndex = 119;\n    const peg$consts = [\n        \"\\r\\n\",\n        peg$literalExpectation(\"\\r\\n\", false),\n        /^[0-9]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"9\"\n            ]\n        ], false, false),\n        /^[a-zA-Z]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ]\n        ], false, false),\n        /^[0-9a-fA-F]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"9\"\n            ],\n            [\n                \"a\",\n                \"f\"\n            ],\n            [\n                \"A\",\n                \"F\"\n            ]\n        ], false, false),\n        /^[\\0-\\xFF]/,\n        peg$classExpectation([\n            [\n                \"\\0\",\n                \"\\xff\"\n            ]\n        ], false, false),\n        /^[\"]/,\n        peg$classExpectation([\n            '\"'\n        ], false, false),\n        \" \",\n        peg$literalExpectation(\" \", false),\n        \"\t\",\n        peg$literalExpectation(\"\t\", false),\n        /^[a-zA-Z0-9]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ],\n            [\n                \"0\",\n                \"9\"\n            ]\n        ], false, false),\n        \";\",\n        peg$literalExpectation(\";\", false),\n        \"/\",\n        peg$literalExpectation(\"/\", false),\n        \"?\",\n        peg$literalExpectation(\"?\", false),\n        \":\",\n        peg$literalExpectation(\":\", false),\n        \"@\",\n        peg$literalExpectation(\"@\", false),\n        \"&\",\n        peg$literalExpectation(\"&\", false),\n        \"=\",\n        peg$literalExpectation(\"=\", false),\n        \"+\",\n        peg$literalExpectation(\"+\", false),\n        \"$\",\n        peg$literalExpectation(\"$\", false),\n        \",\",\n        peg$literalExpectation(\",\", false),\n        \"-\",\n        peg$literalExpectation(\"-\", false),\n        \"_\",\n        peg$literalExpectation(\"_\", false),\n        \".\",\n        peg$literalExpectation(\".\", false),\n        \"!\",\n        peg$literalExpectation(\"!\", false),\n        \"~\",\n        peg$literalExpectation(\"~\", false),\n        \"*\",\n        peg$literalExpectation(\"*\", false),\n        \"'\",\n        peg$literalExpectation(\"'\", false),\n        \"(\",\n        peg$literalExpectation(\"(\", false),\n        \")\",\n        peg$literalExpectation(\")\", false),\n        \"%\",\n        peg$literalExpectation(\"%\", false),\n        function() {\n            return \" \";\n        },\n        function() {\n            return \":\";\n        },\n        /^[!-~]/,\n        peg$classExpectation([\n            [\n                \"!\",\n                \"~\"\n            ]\n        ], false, false),\n        /^[\\x80-\\uFFFF]/,\n        peg$classExpectation([\n            [\n                \"\\x80\",\n                \"\\uFFFF\"\n            ]\n        ], false, false),\n        /^[\\x80-\\xBF]/,\n        peg$classExpectation([\n            [\n                \"\\x80\",\n                \"\\xbf\"\n            ]\n        ], false, false),\n        /^[a-f]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"f\"\n            ]\n        ], false, false),\n        \"`\",\n        peg$literalExpectation(\"`\", false),\n        \"<\",\n        peg$literalExpectation(\"<\", false),\n        \">\",\n        peg$literalExpectation(\">\", false),\n        \"\\\\\",\n        peg$literalExpectation(\"\\\\\", false),\n        \"[\",\n        peg$literalExpectation(\"[\", false),\n        \"]\",\n        peg$literalExpectation(\"]\", false),\n        \"{\",\n        peg$literalExpectation(\"{\", false),\n        \"}\",\n        peg$literalExpectation(\"}\", false),\n        function() {\n            return \"*\";\n        },\n        function() {\n            return \"/\";\n        },\n        function() {\n            return \"=\";\n        },\n        function() {\n            return \"(\";\n        },\n        function() {\n            return \")\";\n        },\n        function() {\n            return \">\";\n        },\n        function() {\n            return \"<\";\n        },\n        function() {\n            return \",\";\n        },\n        function() {\n            return \";\";\n        },\n        function() {\n            return \":\";\n        },\n        function() {\n            return '\"';\n        },\n        /^[!-']/,\n        peg$classExpectation([\n            [\n                \"!\",\n                \"'\"\n            ]\n        ], false, false),\n        /^[*-[]/,\n        peg$classExpectation([\n            [\n                \"*\",\n                \"[\"\n            ]\n        ], false, false),\n        /^[\\]-~]/,\n        peg$classExpectation([\n            [\n                \"]\",\n                \"~\"\n            ]\n        ], false, false),\n        function(contents) {\n            return contents;\n        },\n        /^[#-[]/,\n        peg$classExpectation([\n            [\n                \"#\",\n                \"[\"\n            ]\n        ], false, false),\n        /^[\\0-\\t]/,\n        peg$classExpectation([\n            [\n                \"\\0\",\n                \"\t\"\n            ]\n        ], false, false),\n        /^[\\v-\\f]/,\n        peg$classExpectation([\n            [\n                \"\\v\",\n                \"\\f\"\n            ]\n        ], false, false),\n        /^[\\x0E-\\x7F]/,\n        peg$classExpectation([\n            [\n                \"\\x0e\",\n                \"\\x7f\"\n            ]\n        ], false, false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.uri = new (0, $dbdae61072997c03$export$9156e739aa33e19f)(options.data.scheme, options.data.user, options.data.host, options.data.port);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.uri = new (0, $dbdae61072997c03$export$9156e739aa33e19f)(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n            delete options.data.uri_params;\n            if (options.startRule === \"SIP_URI\") options.data = options.data.uri;\n        },\n        \"sips\",\n        peg$literalExpectation(\"sips\", true),\n        \"sip\",\n        peg$literalExpectation(\"sip\", true),\n        function(uri_scheme) {\n            options = options || {\n                data: {}\n            };\n            options.data.scheme = uri_scheme;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.user = decodeURIComponent(text().slice(0, -1));\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.password = text();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host = text();\n            return options.data.host;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"domain\";\n            return text();\n        },\n        /^[a-zA-Z0-9_\\-]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ],\n            [\n                \"0\",\n                \"9\"\n            ],\n            \"_\",\n            \"-\"\n        ], false, false),\n        /^[a-zA-Z0-9\\-]/,\n        peg$classExpectation([\n            [\n                \"a\",\n                \"z\"\n            ],\n            [\n                \"A\",\n                \"Z\"\n            ],\n            [\n                \"0\",\n                \"9\"\n            ],\n            \"-\"\n        ], false, false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"IPv6\";\n            return text();\n        },\n        \"::\",\n        peg$literalExpectation(\"::\", false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"IPv6\";\n            return text();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host_type = \"IPv4\";\n            return text();\n        },\n        \"25\",\n        peg$literalExpectation(\"25\", false),\n        /^[0-5]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"5\"\n            ]\n        ], false, false),\n        \"2\",\n        peg$literalExpectation(\"2\", false),\n        /^[0-4]/,\n        peg$classExpectation([\n            [\n                \"0\",\n                \"4\"\n            ]\n        ], false, false),\n        \"1\",\n        peg$literalExpectation(\"1\", false),\n        /^[1-9]/,\n        peg$classExpectation([\n            [\n                \"1\",\n                \"9\"\n            ]\n        ], false, false),\n        function(port) {\n            options = options || {\n                data: {}\n            };\n            port = parseInt(port.join(\"\"));\n            options.data.port = port;\n            return port;\n        },\n        \"transport=\",\n        peg$literalExpectation(\"transport=\", true),\n        \"udp\",\n        peg$literalExpectation(\"udp\", true),\n        \"tcp\",\n        peg$literalExpectation(\"tcp\", true),\n        \"sctp\",\n        peg$literalExpectation(\"sctp\", true),\n        \"tls\",\n        peg$literalExpectation(\"tls\", true),\n        function(transport) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"transport\"] = transport.toLowerCase();\n        },\n        \"user=\",\n        peg$literalExpectation(\"user=\", true),\n        \"phone\",\n        peg$literalExpectation(\"phone\", true),\n        \"ip\",\n        peg$literalExpectation(\"ip\", true),\n        function(user) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"user\"] = user.toLowerCase();\n        },\n        \"method=\",\n        peg$literalExpectation(\"method=\", true),\n        function(method) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"method\"] = method;\n        },\n        \"ttl=\",\n        peg$literalExpectation(\"ttl=\", true),\n        function(ttl) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            options.data.params[\"ttl\"] = ttl;\n        },\n        \"maddr=\",\n        peg$literalExpectation(\"maddr=\", true),\n        function(maddr) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"maddr\"] = maddr;\n        },\n        \"lr\",\n        peg$literalExpectation(\"lr\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            options.data.uri_params[\"lr\"] = undefined;\n        },\n        function(param, value) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_params) options.data.uri_params = {};\n            if (value === null) value = undefined;\n            else value = value[1];\n            options.data.uri_params[param.toLowerCase()] = value;\n        },\n        function(hname, hvalue) {\n            hname = hname.join(\"\").toLowerCase();\n            hvalue = hvalue.join(\"\");\n            options = options || {\n                data: {}\n            };\n            if (!options.data.uri_headers) options.data.uri_headers = {};\n            if (!options.data.uri_headers[hname]) options.data.uri_headers[hname] = [\n                hvalue\n            ];\n            else options.data.uri_headers[hname].push(hvalue);\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            // lots of tests fail if this isn't guarded...\n            if (options.startRule === \"Refer_To\") {\n                options.data.uri = new (0, $dbdae61072997c03$export$9156e739aa33e19f)(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n                delete options.data.scheme;\n                delete options.data.user;\n                delete options.data.host;\n                delete options.data.host_type;\n                delete options.data.port;\n                delete options.data.uri_params;\n            }\n        },\n        \"//\",\n        peg$literalExpectation(\"//\", false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.scheme = text();\n        },\n        peg$literalExpectation(\"SIP\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.sip_version = text();\n        },\n        \"INVITE\",\n        peg$literalExpectation(\"INVITE\", false),\n        \"ACK\",\n        peg$literalExpectation(\"ACK\", false),\n        \"VXACH\",\n        peg$literalExpectation(\"VXACH\", false),\n        \"OPTIONS\",\n        peg$literalExpectation(\"OPTIONS\", false),\n        \"BYE\",\n        peg$literalExpectation(\"BYE\", false),\n        \"CANCEL\",\n        peg$literalExpectation(\"CANCEL\", false),\n        \"REGISTER\",\n        peg$literalExpectation(\"REGISTER\", false),\n        \"SUBSCRIBE\",\n        peg$literalExpectation(\"SUBSCRIBE\", false),\n        \"NOTIFY\",\n        peg$literalExpectation(\"NOTIFY\", false),\n        \"REFER\",\n        peg$literalExpectation(\"REFER\", false),\n        \"PUBLISH\",\n        peg$literalExpectation(\"PUBLISH\", false),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.method = text();\n            return options.data.method;\n        },\n        function(status_code) {\n            options = options || {\n                data: {}\n            };\n            options.data.status_code = parseInt(status_code.join(\"\"));\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.reason_phrase = text();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = text();\n        },\n        function() {\n            var idx, length;\n            options = options || {\n                data: {}\n            };\n            length = options.data.multi_header.length;\n            for(idx = 0; idx < length; idx++)if (options.data.multi_header[idx].parsed === null) {\n                options.data = null;\n                break;\n            }\n            if (options.data !== null) options.data = options.data.multi_header;\n            else options.data = -1;\n        },\n        function() {\n            var header;\n            options = options || {\n                data: {}\n            };\n            if (!options.data.multi_header) options.data.multi_header = [];\n            try {\n                header = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            } catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({\n                \"position\": peg$currPos,\n                \"offset\": location().start.offset,\n                \"parsed\": header\n            });\n        },\n        function(displayName) {\n            displayName = text().trim();\n            if (displayName[0] === '\"') displayName = displayName.substring(1, displayName.length - 1);\n            options = options || {\n                data: {}\n            };\n            options.data.displayName = displayName;\n        },\n        \"q\",\n        peg$literalExpectation(\"q\", true),\n        function(q) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            options.data.params[\"q\"] = q;\n        },\n        \"expires\",\n        peg$literalExpectation(\"expires\", true),\n        function(expires) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            options.data.params[\"expires\"] = expires;\n        },\n        function(delta_seconds) {\n            return parseInt(delta_seconds.join(\"\"));\n        },\n        \"0\",\n        peg$literalExpectation(\"0\", false),\n        function() {\n            return parseFloat(text());\n        },\n        function(param, value) {\n            options = options || {\n                data: {}\n            };\n            if (!options.data.params) options.data.params = {};\n            if (value === null) value = undefined;\n            else value = value[1];\n            options.data.params[param.toLowerCase()] = value;\n        },\n        \"render\",\n        peg$literalExpectation(\"render\", true),\n        \"session\",\n        peg$literalExpectation(\"session\", true),\n        \"icon\",\n        peg$literalExpectation(\"icon\", true),\n        \"alert\",\n        peg$literalExpectation(\"alert\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Content_Disposition\") options.data.type = text().toLowerCase();\n        },\n        \"handling\",\n        peg$literalExpectation(\"handling\", true),\n        \"optional\",\n        peg$literalExpectation(\"optional\", true),\n        \"required\",\n        peg$literalExpectation(\"required\", true),\n        function(length) {\n            options = options || {\n                data: {}\n            };\n            options.data = parseInt(length.join(\"\"));\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = text();\n        },\n        \"text\",\n        peg$literalExpectation(\"text\", true),\n        \"image\",\n        peg$literalExpectation(\"image\", true),\n        \"audio\",\n        peg$literalExpectation(\"audio\", true),\n        \"video\",\n        peg$literalExpectation(\"video\", true),\n        \"application\",\n        peg$literalExpectation(\"application\", true),\n        \"message\",\n        peg$literalExpectation(\"message\", true),\n        \"multipart\",\n        peg$literalExpectation(\"multipart\", true),\n        \"x-\",\n        peg$literalExpectation(\"x-\", true),\n        function(cseq_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.value = parseInt(cseq_value.join(\"\"));\n        },\n        function(expires) {\n            options = options || {\n                data: {}\n            };\n            options.data = expires;\n        },\n        function(event_type) {\n            options = options || {\n                data: {}\n            };\n            options.data.event = event_type.toLowerCase();\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            var tag = options.data.tag;\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) options.data.setParam(\"tag\", tag);\n        },\n        \"tag\",\n        peg$literalExpectation(\"tag\", true),\n        function(tag) {\n            options = options || {\n                data: {}\n            };\n            options.data.tag = tag;\n        },\n        function(forwards) {\n            options = options || {\n                data: {}\n            };\n            options.data = parseInt(forwards.join(\"\"));\n        },\n        function(min_expires) {\n            options = options || {\n                data: {}\n            };\n            options.data = min_expires;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n        },\n        \"digest\",\n        peg$literalExpectation(\"Digest\", true),\n        \"realm\",\n        peg$literalExpectation(\"realm\", true),\n        function(realm) {\n            options = options || {\n                data: {}\n            };\n            options.data.realm = realm;\n        },\n        \"domain\",\n        peg$literalExpectation(\"domain\", true),\n        \"nonce\",\n        peg$literalExpectation(\"nonce\", true),\n        function(nonce) {\n            options = options || {\n                data: {}\n            };\n            options.data.nonce = nonce;\n        },\n        \"opaque\",\n        peg$literalExpectation(\"opaque\", true),\n        function(opaque) {\n            options = options || {\n                data: {}\n            };\n            options.data.opaque = opaque;\n        },\n        \"stale\",\n        peg$literalExpectation(\"stale\", true),\n        \"true\",\n        peg$literalExpectation(\"true\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.stale = true;\n        },\n        \"false\",\n        peg$literalExpectation(\"false\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.stale = false;\n        },\n        \"algorithm\",\n        peg$literalExpectation(\"algorithm\", true),\n        \"md5\",\n        peg$literalExpectation(\"MD5\", true),\n        \"md5-sess\",\n        peg$literalExpectation(\"MD5-sess\", true),\n        function(algorithm) {\n            options = options || {\n                data: {}\n            };\n            options.data.algorithm = algorithm.toUpperCase();\n        },\n        \"qop\",\n        peg$literalExpectation(\"qop\", true),\n        \"auth-int\",\n        peg$literalExpectation(\"auth-int\", true),\n        \"auth\",\n        peg$literalExpectation(\"auth\", true),\n        function(qop_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.qop || (options.data.qop = []);\n            options.data.qop.push(qop_value.toLowerCase());\n        },\n        function(rack_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.value = parseInt(rack_value.join(\"\"));\n        },\n        function() {\n            var idx, length;\n            options = options || {\n                data: {}\n            };\n            length = options.data.multi_header.length;\n            for(idx = 0; idx < length; idx++)if (options.data.multi_header[idx].parsed === null) {\n                options.data = null;\n                break;\n            }\n            if (options.data !== null) options.data = options.data.multi_header;\n            else options.data = -1;\n        },\n        function() {\n            var header;\n            options = options || {\n                data: {}\n            };\n            if (!options.data.multi_header) options.data.multi_header = [];\n            try {\n                header = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            } catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({\n                \"position\": peg$currPos,\n                \"offset\": location().start.offset,\n                \"parsed\": header\n            });\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            if (!(options.data.replaces_from_tag && options.data.replaces_to_tag)) options.data = -1;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = {\n                call_id: options.data\n            };\n        },\n        \"from-tag\",\n        peg$literalExpectation(\"from-tag\", true),\n        function(from_tag) {\n            options = options || {\n                data: {}\n            };\n            options.data.replaces_from_tag = from_tag;\n        },\n        \"to-tag\",\n        peg$literalExpectation(\"to-tag\", true),\n        function(to_tag) {\n            options = options || {\n                data: {}\n            };\n            options.data.replaces_to_tag = to_tag;\n        },\n        \"early-only\",\n        peg$literalExpectation(\"early-only\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.early_only = true;\n        },\n        function(head, r) {\n            return r;\n        },\n        function(head, tail) {\n            return list(head, tail);\n        },\n        function(value) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Require\") options.data = value || [];\n        },\n        function(rseq_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.value = parseInt(rseq_value.join(\"\"));\n        },\n        \"active\",\n        peg$literalExpectation(\"active\", true),\n        \"pending\",\n        peg$literalExpectation(\"pending\", true),\n        \"terminated\",\n        peg$literalExpectation(\"terminated\", true),\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.state = text();\n        },\n        \"reason\",\n        peg$literalExpectation(\"reason\", true),\n        function(reason) {\n            options = options || {\n                data: {}\n            };\n            if (typeof reason !== \"undefined\") options.data.reason = reason;\n        },\n        function(expires) {\n            options = options || {\n                data: {}\n            };\n            if (typeof expires !== \"undefined\") options.data.expires = expires;\n        },\n        \"retry_after\",\n        peg$literalExpectation(\"retry_after\", true),\n        function(retry_after) {\n            options = options || {\n                data: {}\n            };\n            if (typeof retry_after !== \"undefined\") options.data.retry_after = retry_after;\n        },\n        \"deactivated\",\n        peg$literalExpectation(\"deactivated\", true),\n        \"probation\",\n        peg$literalExpectation(\"probation\", true),\n        \"rejected\",\n        peg$literalExpectation(\"rejected\", true),\n        \"timeout\",\n        peg$literalExpectation(\"timeout\", true),\n        \"giveup\",\n        peg$literalExpectation(\"giveup\", true),\n        \"noresource\",\n        peg$literalExpectation(\"noresource\", true),\n        \"invariant\",\n        peg$literalExpectation(\"invariant\", true),\n        function(value) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Supported\") options.data = value || [];\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            var tag = options.data.tag;\n            options.data = new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) options.data.setParam(\"tag\", tag);\n        },\n        \"ttl\",\n        peg$literalExpectation(\"ttl\", true),\n        function(via_ttl_value) {\n            options = options || {\n                data: {}\n            };\n            options.data.ttl = via_ttl_value;\n        },\n        \"maddr\",\n        peg$literalExpectation(\"maddr\", true),\n        function(via_maddr) {\n            options = options || {\n                data: {}\n            };\n            options.data.maddr = via_maddr;\n        },\n        \"received\",\n        peg$literalExpectation(\"received\", true),\n        function(via_received) {\n            options = options || {\n                data: {}\n            };\n            options.data.received = via_received;\n        },\n        \"branch\",\n        peg$literalExpectation(\"branch\", true),\n        function(via_branch) {\n            options = options || {\n                data: {}\n            };\n            options.data.branch = via_branch;\n        },\n        \"rport\",\n        peg$literalExpectation(\"rport\", true),\n        function(response_port) {\n            options = options || {\n                data: {}\n            };\n            if (typeof response_port !== \"undefined\") options.data.rport = response_port.join(\"\");\n        },\n        function(via_protocol) {\n            options = options || {\n                data: {}\n            };\n            options.data.protocol = via_protocol;\n        },\n        peg$literalExpectation(\"UDP\", true),\n        peg$literalExpectation(\"TCP\", true),\n        peg$literalExpectation(\"TLS\", true),\n        peg$literalExpectation(\"SCTP\", true),\n        function(via_transport) {\n            options = options || {\n                data: {}\n            };\n            options.data.transport = via_transport;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data.host = text();\n        },\n        function(via_sent_by_port) {\n            options = options || {\n                data: {}\n            };\n            options.data.port = parseInt(via_sent_by_port.join(\"\"));\n        },\n        function(ttl) {\n            return parseInt(ttl.join(\"\"));\n        },\n        function(deltaSeconds) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Session_Expires\") options.data.deltaSeconds = deltaSeconds;\n        },\n        \"refresher\",\n        peg$literalExpectation(\"refresher\", false),\n        \"uas\",\n        peg$literalExpectation(\"uas\", false),\n        \"uac\",\n        peg$literalExpectation(\"uac\", false),\n        function(endpoint) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Session_Expires\") options.data.refresher = endpoint;\n        },\n        function(deltaSeconds) {\n            options = options || {\n                data: {}\n            };\n            if (options.startRule === \"Min_SE\") options.data = deltaSeconds;\n        },\n        \"stuns\",\n        peg$literalExpectation(\"stuns\", true),\n        \"stun\",\n        peg$literalExpectation(\"stun\", true),\n        function(scheme) {\n            options = options || {\n                data: {}\n            };\n            options.data.scheme = scheme;\n        },\n        function(host) {\n            options = options || {\n                data: {}\n            };\n            options.data.host = host;\n        },\n        \"?transport=\",\n        peg$literalExpectation(\"?transport=\", false),\n        \"turns\",\n        peg$literalExpectation(\"turns\", true),\n        \"turn\",\n        peg$literalExpectation(\"turn\", true),\n        function(transport) {\n            options = options || {\n                data: {}\n            };\n            options.data.transport = transport;\n        },\n        function() {\n            options = options || {\n                data: {}\n            };\n            options.data = text();\n        },\n        \"Referred-By\",\n        peg$literalExpectation(\"Referred-By\", false),\n        \"b\",\n        peg$literalExpectation(\"b\", false),\n        \"cid\",\n        peg$literalExpectation(\"cid\", false)\n    ];\n    const peg$bytecode = [\n        peg$decode('2 \"\"6 7!'),\n        peg$decode('4\"\"\"5!7#'),\n        peg$decode('4$\"\"5!7%'),\n        peg$decode('4&\"\"5!7\\''),\n        peg$decode(\";'.# &;(\"),\n        peg$decode('4(\"\"5!7)'),\n        peg$decode('4*\"\"5!7+'),\n        peg$decode('2,\"\"6,7-'),\n        peg$decode('2.\"\"6.7/'),\n        peg$decode('40\"\"5!71'),\n        peg$decode('22\"\"6273.\\x89 &24\"\"6475.} &26\"\"6677.q &28\"\"6879.e &2:\"\"6:7;.Y &2<\"\"6<7=.M &2>\"\"6>7?.A &2@\"\"6@7A.5 &2B\"\"6B7C.) &2D\"\"6D7E'),\n        peg$decode(\";).# &;,\"),\n        peg$decode('2F\"\"6F7G.} &2H\"\"6H7I.q &2J\"\"6J7K.e &2L\"\"6L7M.Y &2N\"\"6N7O.M &2P\"\"6P7Q.A &2R\"\"6R7S.5 &2T\"\"6T7U.) &2V\"\"6V7W'),\n        peg$decode('%%2X\"\"6X7Y/5#;#/,$;#/#$+#)(#\\'#(\"\\'#&\\'#/\"!&,)'),\n        peg$decode('%%$;$0#*;$&/,#; /#$+\")(\"\\'#&\\'#.\" &\"/=#$;$/&#0#*;$&&&#/\\'$8\":Z\" )(\"\\'#&\\'#'),\n        peg$decode(';..\" &\"'),\n        peg$decode(\"%$;'.# &;(0)*;'.# &;(&/?#28\\\"\\\"6879/0$;//'$8#:[# )(#'#(\\\"'#&'#\"),\n        peg$decode('%%$;2/&#0#*;2&&&#/g#$%$;.0#*;.&/,#;2/#$+\")(\"\\'#&\\'#0=*%$;.0#*;.&/,#;2/#$+\")(\"\\'#&\\'#&/#$+\")(\"\\'#&\\'#/\"!&,)'),\n        peg$decode('4\\\\\"\"5!7].# &;3'),\n        peg$decode('4^\"\"5!7_'),\n        peg$decode('4`\"\"5!7a'),\n        peg$decode(';!.) &4b\"\"5!7c'),\n        peg$decode('%$;).\\x95 &2F\"\"6F7G.\\x89 &2J\"\"6J7K.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O/\\x9e#0\\x9b*;).\\x95 &2F\"\"6F7G.\\x89 &2J\"\"6J7K.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O&&&#/\"!&,)'),\n        peg$decode('%$;).\\x89 &2F\"\"6F7G.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O/\\x92#0\\x8f*;).\\x89 &2F\"\"6F7G.} &2L\"\"6L7M.q &2X\"\"6X7Y.e &2P\"\"6P7Q.Y &2H\"\"6H7I.M &2@\"\"6@7A.A &2d\"\"6d7e.5 &2R\"\"6R7S.) &2N\"\"6N7O&&&#/\"!&,)'),\n        peg$decode('2T\"\"6T7U.\\xe3 &2V\"\"6V7W.\\xd7 &2f\"\"6f7g.\\xcb &2h\"\"6h7i.\\xbf &2:\"\"6:7;.\\xb3 &2D\"\"6D7E.\\xa7 &22\"\"6273.\\x9b &28\"\"6879.\\x8f &2j\"\"6j7k.\\x83 &;&.} &24\"\"6475.q &2l\"\"6l7m.e &2n\"\"6n7o.Y &26\"\"6677.M &2>\"\"6>7?.A &2p\"\"6p7q.5 &2r\"\"6r7s.) &;\\'.# &;('),\n        peg$decode('%$;).\\u012B &2F\"\"6F7G.\\u011F &2J\"\"6J7K.\\u0113 &2L\"\"6L7M.\\u0107 &2X\"\"6X7Y.\\xfb &2P\"\"6P7Q.\\xef &2H\"\"6H7I.\\xe3 &2@\"\"6@7A.\\xd7 &2d\"\"6d7e.\\xcb &2R\"\"6R7S.\\xbf &2N\"\"6N7O.\\xb3 &2T\"\"6T7U.\\xa7 &2V\"\"6V7W.\\x9b &2f\"\"6f7g.\\x8f &2h\"\"6h7i.\\x83 &28\"\"6879.w &2j\"\"6j7k.k &;&.e &24\"\"6475.Y &2l\"\"6l7m.M &2n\"\"6n7o.A &26\"\"6677.5 &2p\"\"6p7q.) &2r\"\"6r7s/\\u0134#0\\u0131*;).\\u012B &2F\"\"6F7G.\\u011F &2J\"\"6J7K.\\u0113 &2L\"\"6L7M.\\u0107 &2X\"\"6X7Y.\\xfb &2P\"\"6P7Q.\\xef &2H\"\"6H7I.\\xe3 &2@\"\"6@7A.\\xd7 &2d\"\"6d7e.\\xcb &2R\"\"6R7S.\\xbf &2N\"\"6N7O.\\xb3 &2T\"\"6T7U.\\xa7 &2V\"\"6V7W.\\x9b &2f\"\"6f7g.\\x8f &2h\"\"6h7i.\\x83 &28\"\"6879.w &2j\"\"6j7k.k &;&.e &24\"\"6475.Y &2l\"\"6l7m.M &2n\"\"6n7o.A &26\"\"6677.5 &2p\"\"6p7q.) &2r\"\"6r7s&&&#/\"!&,)'),\n        peg$decode(\"%;//?#2P\\\"\\\"6P7Q/0$;//'$8#:t# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#24\\\"\\\"6475/0$;//'$8#:u# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2>\\\"\\\"6>7?/0$;//'$8#:v# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2T\\\"\\\"6T7U/0$;//'$8#:w# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2V\\\"\\\"6V7W/0$;//'$8#:x# )(#'#(\\\"'#&'#\"),\n        peg$decode('%2h\"\"6h7i/0#;//\\'$8\":y\" )(\"\\'#&\\'#'),\n        peg$decode('%;//6#2f\"\"6f7g/\\'$8\":z\" )(\"\\'#&\\'#'),\n        peg$decode(\"%;//?#2D\\\"\\\"6D7E/0$;//'$8#:{# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#22\\\"\\\"6273/0$;//'$8#:|# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#28\\\"\\\"6879/0$;//'$8#:}# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//0#;&/'$8\\\":~\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;&/0#;//'$8\\\":~\\\" )(\\\"'#&'#\"),\n        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parts: parts,\n            inverted: inverted,\n            ignoreCase: ignoreCase\n        };\n    }\n    function peg$anyExpectation() {\n        return {\n            type: \"any\"\n        };\n    }\n    function peg$endExpectation() {\n        return {\n            type: \"end\"\n        };\n    }\n    function peg$otherExpectation(description) {\n        return {\n            type: \"other\",\n            description: description\n        };\n    }\n    function peg$computePosDetails(pos) {\n        let details = peg$posDetailsCache[pos];\n        let p;\n        if (details) return details;\n        else {\n            p = pos - 1;\n            while(!peg$posDetailsCache[p])p--;\n            details = peg$posDetailsCache[p];\n            details = {\n                line: details.line,\n                column: details.column\n            };\n            while(p < pos){\n                if (input.charCodeAt(p) === 10) {\n                    details.line++;\n                    details.column = 1;\n                } else details.column++;\n                p++;\n            }\n            peg$posDetailsCache[pos] = details;\n            return details;\n        }\n    }\n    function peg$computeLocation(startPos, endPos) {\n        const startPosDetails = peg$computePosDetails(startPos);\n        const endPosDetails = peg$computePosDetails(endPos);\n        return {\n            source: peg$source,\n            start: {\n                offset: startPos,\n                line: startPosDetails.line,\n                column: startPosDetails.column\n            },\n            end: {\n                offset: endPos,\n                line: endPosDetails.line,\n                column: endPosDetails.column\n            }\n        };\n    }\n    function peg$fail(expected1) {\n        if (peg$currPos < peg$maxFailPos) return;\n        if (peg$currPos > peg$maxFailPos) {\n            peg$maxFailPos = peg$currPos;\n            peg$maxFailExpected = [];\n        }\n        peg$maxFailExpected.push(expected1);\n    }\n    function peg$buildSimpleError(message, location1) {\n        return new $c65620b741f6e224$export$f21cea08b0dd60e8(message, [], \"\", location1);\n    }\n    function peg$buildStructuredError(expected1, found, location1) {\n        return new $c65620b741f6e224$export$f21cea08b0dd60e8($c65620b741f6e224$export$f21cea08b0dd60e8.buildMessage(expected1, found), expected1, found, location1);\n    }\n    function peg$decode(s) {\n        return s.split(\"\").map((ch)=>ch.charCodeAt(0) - 32);\n    }\n    function peg$parseRule(index) {\n        const bc = peg$bytecode[index];\n        let ip = 0;\n        const ips = [];\n        let end = bc.length;\n        const ends = [];\n        const stack = [];\n        let params;\n        while(true){\n            while(ip < end)switch(bc[ip]){\n                case 0:\n                    stack.push(peg$consts[bc[ip + 1]]);\n                    ip += 2;\n                    break;\n                case 1:\n                    stack.push(undefined);\n                    ip++;\n                    break;\n                case 2:\n                    stack.push(null);\n                    ip++;\n                    break;\n                case 3:\n                    stack.push(peg$FAILED);\n                    ip++;\n                    break;\n                case 4:\n                    stack.push([]);\n                    ip++;\n                    break;\n                case 5:\n                    stack.push(peg$currPos);\n                    ip++;\n                    break;\n                case 6:\n                    stack.pop();\n                    ip++;\n                    break;\n                case 7:\n                    peg$currPos = stack.pop();\n                    ip++;\n                    break;\n                case 8:\n                    stack.length -= bc[ip + 1];\n                    ip += 2;\n                    break;\n                case 9:\n                    stack.splice(-2, 1);\n                    ip++;\n                    break;\n                case 10:\n                    stack[stack.length - 2].push(stack.pop());\n                    ip++;\n                    break;\n                case 11:\n                    stack.push(stack.splice(stack.length - bc[ip + 1], bc[ip + 1]));\n                    ip += 2;\n                    break;\n                case 12:\n                    stack.push(input.substring(stack.pop(), peg$currPos));\n                    ip++;\n                    break;\n                case 13:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (stack[stack.length - 1]) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 14:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (stack[stack.length - 1] === peg$FAILED) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 15:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (stack[stack.length - 1] !== peg$FAILED) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 16:\n                    if (stack[stack.length - 1] !== peg$FAILED) {\n                        ends.push(end);\n                        ips.push(ip);\n                        end = ip + 2 + bc[ip + 1];\n                        ip += 2;\n                    } else ip += 2 + bc[ip + 1];\n                    break;\n                case 17:\n                    ends.push(end);\n                    ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                    if (input.length > peg$currPos) {\n                        end = ip + 3 + bc[ip + 1];\n                        ip += 3;\n                    } else {\n                        end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                        ip += 3 + bc[ip + 1];\n                    }\n                    break;\n                case 18:\n                    ends.push(end);\n                    ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                    if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length) === peg$consts[bc[ip + 1]]) {\n                        end = ip + 4 + bc[ip + 2];\n                        ip += 4;\n                    } else {\n                        end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                        ip += 4 + bc[ip + 2];\n                    }\n                    break;\n                case 19:\n                    ends.push(end);\n                    ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                    if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length).toLowerCase() === peg$consts[bc[ip + 1]]) {\n                        end = ip + 4 + bc[ip + 2];\n                        ip += 4;\n                    } else {\n                        end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                        ip += 4 + bc[ip + 2];\n                    }\n                    break;\n                case 20:\n                    ends.push(end);\n                    ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                    if (peg$consts[bc[ip + 1]].test(input.charAt(peg$currPos))) {\n                        end = ip + 4 + bc[ip + 2];\n                        ip += 4;\n                    } else {\n                        end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                        ip += 4 + bc[ip + 2];\n                    }\n                    break;\n                case 21:\n                    stack.push(input.substr(peg$currPos, bc[ip + 1]));\n                    peg$currPos += bc[ip + 1];\n                    ip += 2;\n                    break;\n                case 22:\n                    stack.push(peg$consts[bc[ip + 1]]);\n                    peg$currPos += peg$consts[bc[ip + 1]].length;\n                    ip += 2;\n                    break;\n                case 23:\n                    stack.push(peg$FAILED);\n                    if (peg$silentFails === 0) peg$fail(peg$consts[bc[ip + 1]]);\n                    ip += 2;\n                    break;\n                case 24:\n                    peg$savedPos = stack[stack.length - 1 - bc[ip + 1]];\n                    ip += 2;\n                    break;\n                case 25:\n                    peg$savedPos = peg$currPos;\n                    ip++;\n                    break;\n                case 26:\n                    params = bc.slice(ip + 4, ip + 4 + bc[ip + 3]).map(function(p) {\n                        return stack[stack.length - 1 - p];\n                    });\n                    stack.splice(stack.length - bc[ip + 2], bc[ip + 2], peg$consts[bc[ip + 1]].apply(null, params));\n                    ip += 4 + bc[ip + 3];\n                    break;\n                case 27:\n                    stack.push(peg$parseRule(bc[ip + 1]));\n                    ip += 2;\n                    break;\n                case 28:\n                    peg$silentFails++;\n                    ip++;\n                    break;\n                case 29:\n                    peg$silentFails--;\n                    ip++;\n                    break;\n                default:\n                    throw new Error(\"Invalid opcode: \" + bc[ip] + \".\");\n            }\n            if (ends.length > 0) {\n                end = ends.pop();\n                ip = ips.pop();\n            } else break;\n        }\n        return stack[0];\n    }\n    options.data = {}; // Object to which header attributes will be assigned during parsing\n    function list(head, tail) {\n        return [\n            head\n        ].concat(tail);\n    }\n    peg$result = peg$parseRule(peg$startRuleIndex);\n    if (peg$result !== peg$FAILED && peg$currPos === input.length) return peg$result;\n    else {\n        if (peg$result !== peg$FAILED && peg$currPos < input.length) peg$fail(peg$endExpectation());\n        throw peg$buildStructuredError(peg$maxFailExpected, peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null, peg$maxFailPos < input.length ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1) : peg$computeLocation(peg$maxFailPos, peg$maxFailPos));\n    }\n}\nconst $c65620b741f6e224$export$98e6a39c04603d36 = $c65620b741f6e224$var$peg$parse;\n\n\nvar $dd77ce08b7a88b80$export$553a52f18b21505e;\n(function(Grammar) {\n    /**\n     * Parse.\n     * @param input -\n     * @param startRule -\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function parse(input, startRule) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const options = {\n            startRule: startRule\n        };\n        try {\n            $c65620b741f6e224$export$98e6a39c04603d36(input, options);\n        } catch (e) {\n            options.data = -1;\n        }\n        return options.data;\n    }\n    Grammar.parse = parse;\n    /**\n     * Parse the given string and returns a SIP.NameAddrHeader instance or undefined if\n     * it is an invalid NameAddrHeader.\n     * @param name_addr_header -\n     */ function nameAddrHeaderParse(nameAddrHeader) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedNameAddrHeader = Grammar.parse(nameAddrHeader, \"Name_Addr_Header\");\n        return parsedNameAddrHeader !== -1 ? parsedNameAddrHeader : undefined;\n    }\n    Grammar.nameAddrHeaderParse = nameAddrHeaderParse;\n    /**\n     * Parse the given string and returns a SIP.URI instance or undefined if\n     * it is an invalid URI.\n     * @param uri -\n     */ function URIParse(uri) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedUri = Grammar.parse(uri, \"SIP_URI\");\n        return parsedUri !== -1 ? parsedUri : undefined;\n    }\n    Grammar.URIParse = URIParse;\n})($dd77ce08b7a88b80$export$553a52f18b21505e = $dd77ce08b7a88b80$export$553a52f18b21505e || ($dd77ce08b7a88b80$export$553a52f18b21505e = {}));\n\n\n\n/**\n * SIP Response Reasons\n * DOC: http://www.iana.org/assignments/sip-parameters\n * @internal\n */ const $9ef5a4825b23ca0b$var$REASON_PHRASE = {\n    100: \"Trying\",\n    180: \"Ringing\",\n    181: \"Call Is Being Forwarded\",\n    182: \"Queued\",\n    183: \"Session Progress\",\n    199: \"Early Dialog Terminated\",\n    200: \"OK\",\n    202: \"Accepted\",\n    204: \"No Notification\",\n    300: \"Multiple Choices\",\n    301: \"Moved Permanently\",\n    302: \"Moved Temporarily\",\n    305: \"Use Proxy\",\n    380: \"Alternative Service\",\n    400: \"Bad Request\",\n    401: \"Unauthorized\",\n    402: \"Payment Required\",\n    403: \"Forbidden\",\n    404: \"Not Found\",\n    405: \"Method Not Allowed\",\n    406: \"Not Acceptable\",\n    407: \"Proxy Authentication Required\",\n    408: \"Request Timeout\",\n    410: \"Gone\",\n    412: \"Conditional Request Failed\",\n    413: \"Request Entity Too Large\",\n    414: \"Request-URI Too Long\",\n    415: \"Unsupported Media Type\",\n    416: \"Unsupported URI Scheme\",\n    417: \"Unknown Resource-Priority\",\n    420: \"Bad Extension\",\n    421: \"Extension Required\",\n    422: \"Session Interval Too Small\",\n    423: \"Interval Too Brief\",\n    428: \"Use Identity Header\",\n    429: \"Provide Referrer Identity\",\n    430: \"Flow Failed\",\n    433: \"Anonymity Disallowed\",\n    436: \"Bad Identity-Info\",\n    437: \"Unsupported Certificate\",\n    438: \"Invalid Identity Header\",\n    439: \"First Hop Lacks Outbound Support\",\n    440: \"Max-Breadth Exceeded\",\n    469: \"Bad Info Package\",\n    470: \"Consent Needed\",\n    478: \"Unresolvable Destination\",\n    480: \"Temporarily Unavailable\",\n    481: \"Call/Transaction Does Not Exist\",\n    482: \"Loop Detected\",\n    483: \"Too Many Hops\",\n    484: \"Address Incomplete\",\n    485: \"Ambiguous\",\n    486: \"Busy Here\",\n    487: \"Request Terminated\",\n    488: \"Not Acceptable Here\",\n    489: \"Bad Event\",\n    491: \"Request Pending\",\n    493: \"Undecipherable\",\n    494: \"Security Agreement Required\",\n    500: \"Internal Server Error\",\n    501: \"Not Implemented\",\n    502: \"Bad Gateway\",\n    503: \"Service Unavailable\",\n    504: \"Server Time-out\",\n    505: \"Version Not Supported\",\n    513: \"Message Too Large\",\n    580: \"Precondition Failure\",\n    600: \"Busy Everywhere\",\n    603: \"Decline\",\n    604: \"Does Not Exist Anywhere\",\n    606: \"Not Acceptable\"\n};\nfunction $9ef5a4825b23ca0b$export$8ade8bb6be9659e6(size, base = 32) {\n    let token = \"\";\n    for(let i = 0; i < size; i++){\n        const r = Math.floor(Math.random() * base);\n        token += r.toString(base);\n    }\n    return token;\n}\nfunction $9ef5a4825b23ca0b$export$91293bff868a9015(code) {\n    return $9ef5a4825b23ca0b$var$REASON_PHRASE[code] || \"\";\n}\nfunction $9ef5a4825b23ca0b$export$810aab6c3b803abf() {\n    return $9ef5a4825b23ca0b$export$8ade8bb6be9659e6(10);\n}\nfunction $9ef5a4825b23ca0b$export$13418308177929fa(str) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const exceptions = {\n        \"Call-Id\": \"Call-ID\",\n        Cseq: \"CSeq\",\n        \"Min-Se\": \"Min-SE\",\n        Rack: \"RAck\",\n        Rseq: \"RSeq\",\n        \"Www-Authenticate\": \"WWW-Authenticate\"\n    };\n    const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n    const parts = name.length;\n    let hname = \"\";\n    for(let part = 0; part < parts; part++){\n        if (part !== 0) hname += \"-\";\n        hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n    }\n    if (exceptions[hname]) hname = exceptions[hname];\n    return hname;\n}\nfunction $9ef5a4825b23ca0b$export$35c75c636a5e80e5(str) {\n    return encodeURIComponent(str).replace(/%[A-F\\d]{2}/g, \"U\").length;\n}\n\n\nclass $2a69815b850249a6$export$9d4333345ffa4fd6 {\n    constructor(){\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.headers = {};\n    }\n    /**\n     * Insert a header of the given name and value into the last position of the\n     * header array.\n     * @param name - header name\n     * @param value - header value\n     */ addHeader(name, value) {\n        const header = {\n            raw: value\n        };\n        name = (0, $9ef5a4825b23ca0b$export$13418308177929fa)(name);\n        if (this.headers[name]) this.headers[name].push(header);\n        else this.headers[name] = [\n            header\n        ];\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */ getHeader(name) {\n        const header = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        if (header) {\n            if (header[0]) return header[0].raw;\n        } else return;\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array - with all the headers of the specified name.\n     */ getHeaders(name) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const header = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        const result = [];\n        if (!header) return [];\n        for (const headerPart of header)result.push(headerPart.raw);\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */ hasHeader(name) {\n        return !!this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n    }\n    /**\n     * Parse the given header on the given index.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    parseHeader(name, idx = 0) {\n        name = (0, $9ef5a4825b23ca0b$export$13418308177929fa)(name);\n        if (!this.headers[name]) // this.logger.log(\"header '\" + name + \"' not present\");\n        return;\n        else if (idx >= this.headers[name].length) // this.logger.log(\"not so many '\" + name + \"' headers present\");\n        return;\n        const header = this.headers[name][idx];\n        const value = header.raw;\n        if (header.parsed) return header.parsed;\n        // substitute '-' by '_' for grammar rule matching.\n        const parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(value, name.replace(/-/g, \"_\"));\n        if (parsed === -1) {\n            this.headers[name].splice(idx, 1); // delete from headers\n            // this.logger.warn('error parsing \"' + name + '\" header field with value \"' + value + '\"');\n            return;\n        } else {\n            header.parsed = parsed;\n            return parsed;\n        }\n    }\n    /**\n     * Message Header attribute selector. Alias of parseHeader.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     *\n     * @example\n     * message.s('via',3).port\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    s(name, idx = 0) {\n        return this.parseHeader(name, idx);\n    }\n    /**\n     * Replace the value of the given header by the value.\n     * @param name - header name\n     * @param value - header value\n     */ setHeader(name, value) {\n        this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)] = [\n            {\n                raw: value\n            }\n        ];\n    }\n    toString() {\n        return this.data;\n    }\n}\n\n\nclass $36a488a350db25b8$export$b03b8011240de09c extends (0, $2a69815b850249a6$export$9d4333345ffa4fd6) {\n    constructor(){\n        super();\n    }\n}\n\n\n\nclass $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc extends (0, $2a69815b850249a6$export$9d4333345ffa4fd6) {\n    constructor(){\n        super();\n    }\n}\n\n\n\n\nclass $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3 {\n    constructor(method, ruri, fromURI, toURI, options, extraHeaders, body){\n        this.headers = {};\n        this.extraHeaders = [];\n        // Initialize default options\n        this.options = $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3.getDefaultOptions();\n        // Options - merge a deep copy\n        if (options) {\n            this.options = Object.assign(Object.assign({}, this.options), options);\n            if (this.options.optionTags && this.options.optionTags.length) this.options.optionTags = this.options.optionTags.slice();\n            if (this.options.routeSet && this.options.routeSet.length) this.options.routeSet = this.options.routeSet.slice();\n        }\n        // Extra headers - deep copy\n        if (extraHeaders && extraHeaders.length) this.extraHeaders = extraHeaders.slice();\n        // Body - deep copy\n        if (body) // TODO: internal representation should be Body\n        // this.body = { ...body };\n        this.body = {\n            body: body.content,\n            contentType: body.contentType\n        };\n        // Method\n        this.method = method;\n        // RURI\n        this.ruri = ruri.clone();\n        // From\n        this.fromURI = fromURI.clone();\n        this.fromTag = this.options.fromTag ? this.options.fromTag : (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)();\n        this.from = $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3.makeNameAddrHeader(this.fromURI, this.options.fromDisplayName, this.fromTag);\n        // To\n        this.toURI = toURI.clone();\n        this.toTag = this.options.toTag;\n        this.to = $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3.makeNameAddrHeader(this.toURI, this.options.toDisplayName, this.toTag);\n        // Call-ID\n        this.callId = this.options.callId ? this.options.callId : this.options.callIdPrefix + (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(15);\n        // CSeq\n        this.cseq = this.options.cseq;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        this.setHeader(\"route\", this.options.routeSet);\n        this.setHeader(\"via\", \"\");\n        this.setHeader(\"to\", this.to.toString());\n        this.setHeader(\"from\", this.from.toString());\n        this.setHeader(\"cseq\", this.cseq + \" \" + this.method);\n        this.setHeader(\"call-id\", this.callId);\n        this.setHeader(\"max-forwards\", \"70\");\n    }\n    /** Get a copy of the default options. */ static getDefaultOptions() {\n        return {\n            callId: \"\",\n            callIdPrefix: \"\",\n            cseq: 1,\n            toDisplayName: \"\",\n            toTag: \"\",\n            fromDisplayName: \"\",\n            fromTag: \"\",\n            forceRport: false,\n            hackViaTcp: false,\n            optionTags: [\n                \"outbound\"\n            ],\n            routeSet: [],\n            userAgentString: \"sip.js\",\n            viaHost: \"\"\n        };\n    }\n    static makeNameAddrHeader(uri, displayName, tag) {\n        const parameters = {};\n        if (tag) parameters.tag = tag;\n        return new (0, $b62549b966a08c5b$export$426a8f49e69dc5fe)(uri, displayName, parameters);\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */ getHeader(name) {\n        const header = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        if (header) {\n            if (header[0]) return header[0];\n        } else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders){\n                if (regexp.test(exHeader)) return exHeader.substring(exHeader.indexOf(\":\") + 1).trim();\n            }\n        }\n        return;\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array with all the headers of the specified name.\n     */ getHeaders(name) {\n        const result = [];\n        const headerArray = this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)];\n        if (headerArray) for (const headerPart of headerArray)result.push(headerPart);\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders)if (regexp.test(exHeader)) result.push(exHeader.substring(exHeader.indexOf(\":\") + 1).trim());\n        }\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */ hasHeader(name) {\n        if (this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)]) return true;\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const extraHeader of this.extraHeaders){\n                if (regexp.test(extraHeader)) return true;\n            }\n        }\n        return false;\n    }\n    /**\n     * Replace the the given header by the given value.\n     * @param name - header name\n     * @param value - header value\n     */ setHeader(name, value) {\n        this.headers[(0, $9ef5a4825b23ca0b$export$13418308177929fa)(name)] = value instanceof Array ? value : [\n            value\n        ];\n    }\n    /**\n     * The Via header field indicates the transport used for the transaction\n     * and identifies the location where the response is to be sent.  A Via\n     * header field value is added only after the transport that will be\n     * used to reach the next hop has been selected (which may involve the\n     * usage of the procedures in [4]).\n     *\n     * When the UAC creates a request, it MUST insert a Via into that\n     * request.  The protocol name and protocol version in the header field\n     * MUST be SIP and 2.0, respectively.  The Via header field value MUST\n     * contain a branch parameter.  This parameter is used to identify the\n     * transaction created by that request.  This parameter is used by both\n     * the client and the server.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n     * @param branchParameter - The branch parameter.\n     * @param transport - The sent protocol transport.\n     */ setViaHeader(branch, transport) {\n        // FIXME: Hack\n        if (this.options.hackViaTcp) transport = \"TCP\";\n        let via = \"SIP/2.0/\" + transport;\n        via += \" \" + this.options.viaHost + \";branch=\" + branch;\n        if (this.options.forceRport) via += \";rport\";\n        this.setHeader(\"via\", via);\n        this.branch = branch;\n    }\n    toString() {\n        let msg = \"\";\n        msg += this.method + \" \" + this.ruri.toRaw() + \" SIP/2.0\\r\\n\";\n        for(const header in this.headers){\n            if (this.headers[header]) for (const headerPart of this.headers[header])msg += header + \": \" + headerPart + \"\\r\\n\";\n        }\n        for (const header of this.extraHeaders)msg += header.trim() + \"\\r\\n\";\n        msg += \"Supported: \" + this.options.optionTags.join(\", \") + \"\\r\\n\";\n        msg += \"User-Agent: \" + this.options.userAgentString + \"\\r\\n\";\n        if (this.body) {\n            if (typeof this.body === \"string\") {\n                msg += \"Content-Length: \" + (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(this.body) + \"\\r\\n\\r\\n\";\n                msg += this.body;\n            } else if (this.body.body && this.body.contentType) {\n                msg += \"Content-Type: \" + this.body.contentType + \"\\r\\n\";\n                msg += \"Content-Length: \" + (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(this.body.body) + \"\\r\\n\\r\\n\";\n                msg += this.body.body;\n            } else msg += \"Content-Length: 0\\r\\n\\r\\n\";\n        } else msg += \"Content-Length: 0\\r\\n\\r\\n\";\n        return msg;\n    }\n}\n\n\n// If the Content-Disposition header field is missing, bodies of\n// Content-Type application/sdp imply the disposition \"session\", while\n// other content types imply \"render\".\n// https://tools.ietf.org/html/rfc3261#section-13.2.1\nfunction $35e2f96fad41499f$var$contentTypeToContentDisposition(contentType) {\n    if (contentType === \"application/sdp\") return \"session\";\n    else return \"render\";\n}\nfunction $35e2f96fad41499f$export$46b123b754f2f425(bodyLegacy) {\n    const content = typeof bodyLegacy === \"string\" ? bodyLegacy : bodyLegacy.body;\n    const contentType = typeof bodyLegacy === \"string\" ? \"application/sdp\" : bodyLegacy.contentType;\n    const contentDisposition = $35e2f96fad41499f$var$contentTypeToContentDisposition(contentType);\n    const body = {\n        contentDisposition: contentDisposition,\n        contentType: contentType,\n        content: content\n    };\n    return body;\n}\nfunction $35e2f96fad41499f$export$540dbd453ede1ce3(body) {\n    return body && typeof body.content === \"string\" && typeof body.contentType === \"string\" && body.contentDisposition === undefined ? true : typeof body.contentDisposition === \"string\";\n}\nfunction $35e2f96fad41499f$export$135b49d4bc2964c6(message) {\n    let contentDisposition;\n    let contentType;\n    let content;\n    // We're in UAS role, receiving incoming request\n    if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, receiving incoming response\n    if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, sending outgoing request\n    if (message instanceof (0, $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3)) {\n        if (message.body) {\n            contentDisposition = message.getHeader(\"Content-Disposition\");\n            contentType = message.getHeader(\"Content-Type\");\n            if (typeof message.body === \"string\") {\n                // FIXME: OutgoingRequest should not allow a \"string\" body without a \"Content-Type\" header.\n                if (!contentType) throw new Error(\"Header content type header does not equal body content type.\");\n                content = message.body;\n            } else {\n                // FIXME: OutgoingRequest should not allow the \"Content-Type\" header not to match th body content type\n                if (contentType && contentType !== message.body.contentType) throw new Error(\"Header content type header does not equal body content type.\");\n                contentType = message.body.contentType;\n                content = message.body.body;\n            }\n        }\n    }\n    // We're in UAS role, sending outgoing response\n    if ($35e2f96fad41499f$export$540dbd453ede1ce3(message)) {\n        contentDisposition = message.contentDisposition;\n        contentType = message.contentType;\n        content = message.content;\n    }\n    // No content, no body.\n    if (!content) return undefined;\n    if (contentType && !contentDisposition) contentDisposition = $35e2f96fad41499f$var$contentTypeToContentDisposition(contentType);\n    if (!contentDisposition) throw new Error(\"Content disposition undefined.\");\n    if (!contentType) throw new Error(\"Content type undefined.\");\n    return {\n        contentDisposition: contentDisposition,\n        contentType: contentType,\n        content: content\n    };\n}\n\n\n/**\n * Session state.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-13\n * @public\n */ var $12c24789242f875e$export$84bf1aca7aacb716;\n(function(SessionState) {\n    SessionState[\"Initial\"] = \"Initial\";\n    SessionState[\"Early\"] = \"Early\";\n    SessionState[\"AckWait\"] = \"AckWait\";\n    SessionState[\"Confirmed\"] = \"Confirmed\";\n    SessionState[\"Terminated\"] = \"Terminated\";\n})($12c24789242f875e$export$84bf1aca7aacb716 = $12c24789242f875e$export$84bf1aca7aacb716 || ($12c24789242f875e$export$84bf1aca7aacb716 = {}));\nvar $12c24789242f875e$export$8cb9fe9f0b3bb1c7;\n(function(SignalingState) {\n    SignalingState[\"Initial\"] = \"Initial\";\n    SignalingState[\"HaveLocalOffer\"] = \"HaveLocalOffer\";\n    SignalingState[\"HaveRemoteOffer\"] = \"HaveRemoteOffer\";\n    SignalingState[\"Stable\"] = \"Stable\";\n    SignalingState[\"Closed\"] = \"Closed\";\n})($12c24789242f875e$export$8cb9fe9f0b3bb1c7 = $12c24789242f875e$export$8cb9fe9f0b3bb1c7 || ($12c24789242f875e$export$8cb9fe9f0b3bb1c7 = {}));\n\n\nconst $d9c671393334589e$var$T1 = 500;\nconst $d9c671393334589e$var$T2 = 4000;\nconst $d9c671393334589e$var$T4 = 5000;\nconst $d9c671393334589e$export$8bb2c1fb2b1765a9 = {\n    T1: $d9c671393334589e$var$T1,\n    T2: $d9c671393334589e$var$T2,\n    T4: $d9c671393334589e$var$T4,\n    TIMER_B: 64 * $d9c671393334589e$var$T1,\n    TIMER_D: 0 * $d9c671393334589e$var$T1,\n    TIMER_F: 64 * $d9c671393334589e$var$T1,\n    TIMER_H: 64 * $d9c671393334589e$var$T1,\n    TIMER_I: 0 * $d9c671393334589e$var$T4,\n    TIMER_J: 0 * $d9c671393334589e$var$T1,\n    TIMER_K: 0 * $d9c671393334589e$var$T4,\n    TIMER_L: 64 * $d9c671393334589e$var$T1,\n    TIMER_M: 64 * $d9c671393334589e$var$T1,\n    TIMER_N: 64 * $d9c671393334589e$var$T1,\n    PROVISIONAL_RESPONSE_INTERVAL: 60000 // See RFC 3261 Section 13.3.1.1\n};\n\n\n/**\n * An Exception is considered a condition that a reasonable application may wish to catch.\n * An Error indicates serious problems that a reasonable application should not try to catch.\n * @public\n */ class $a1cbd1d3dcba43ab$export$e2f174de097e0bcd extends Error {\n    constructor(message){\n        super(message); // 'Error' breaks prototype chain here\n        Object.setPrototypeOf(this, new.target.prototype); // restore prototype chain\n    }\n}\n\n\nclass $507bd02c449dbf58$export$c030d241ccd2f0c6 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Transaction state error.\");\n    }\n}\n\n\n\n/**\n * A request to reject an {@link Invitation} (incoming CANCEL).\n * @public\n */ class $24df438dfb566a5a$export$848c9b7ead0df967 {\n    /** @internal */ constructor(incomingCancelRequest){\n        this.incomingCancelRequest = incomingCancelRequest;\n    }\n    /** Incoming CANCEL request message. */ get request() {\n        return this.incomingCancelRequest;\n    }\n}\n\n\n\nclass $9bf0273360d9374b$export$9057181257c3c72f extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Unsupported content type.\");\n    }\n}\n\n\n\nclass $2f6becfc657677bb$export$371a565fed7d7f84 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Unspecified session description handler error.\");\n    }\n}\n\n\n\nclass $49bb337e8869494e$export$3f32b591920dbfba extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(){\n        super(\"The session has terminated.\");\n    }\n}\n\n\n\n\n\n\n\n/* eslint-disable @typescript-eslint/no-namespace */ /**\n * SIP Methods\n * @internal\n */ var $ea4e4d873ec3240b$export$e7094788287c5e9b;\n(function(C) {\n    C.ACK = \"ACK\";\n    C.BYE = \"BYE\";\n    C.CANCEL = \"CANCEL\";\n    C.INFO = \"INFO\";\n    C.INVITE = \"INVITE\";\n    C.MESSAGE = \"MESSAGE\";\n    C.NOTIFY = \"NOTIFY\";\n    C.OPTIONS = \"OPTIONS\";\n    C.REGISTER = \"REGISTER\";\n    C.UPDATE = \"UPDATE\";\n    C.SUBSCRIBE = \"SUBSCRIBE\";\n    C.PUBLISH = \"PUBLISH\";\n    C.REFER = \"REFER\";\n    C.PRACK = \"PRACK\";\n})($ea4e4d873ec3240b$export$e7094788287c5e9b = $ea4e4d873ec3240b$export$e7094788287c5e9b || ($ea4e4d873ec3240b$export$e7094788287c5e9b = {}));\n\n\nconst $4619cb33ea8b9a88$export$adbfd46aa14386de = [\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).OPTIONS,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PRACK,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER,\n    (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).SUBSCRIBE\n];\n\n\n/**\n * A request to confirm a {@link Session} (incoming ACK).\n * @public\n */ class $56b90c466b43873c$export$a0eb6f8226b214ab {\n    /** @internal */ constructor(incomingAckRequest){\n        this.incomingAckRequest = incomingAckRequest;\n    }\n    /** Incoming ACK request message. */ get request() {\n        return this.incomingAckRequest.message;\n    }\n}\n\n\n/**\n * A request to end a {@link Session} (incoming BYE).\n * @public\n */ class $d5afbbeee4be05d2$export$1030969e2d8a99b {\n    /** @internal */ constructor(incomingByeRequest){\n        this.incomingByeRequest = incomingByeRequest;\n    }\n    /** Incoming BYE request message. */ get request() {\n        return this.incomingByeRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingByeRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingByeRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n/**\n * An {@link Emitter} implementation.\n * @internal\n */ class $3f66d713440d295c$export$765f30f7b0920a6c {\n    constructor(){\n        this.listeners = new Array();\n    }\n    /**\n     * Sets up a function that will be called whenever the target changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */ addListener(listener, options) {\n        const onceWrapper = (data)=>{\n            this.removeListener(onceWrapper);\n            listener(data);\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * Emit change.\n     * @param data - Data to emit.\n     */ emit(data) {\n        this.listeners.slice().forEach((listener)=>listener(data));\n    }\n    /**\n     * Removes all listeners previously registered with addListener.\n     */ removeAllListeners() {\n        this.listeners = [];\n    }\n    /**\n     * Removes a listener previously registered with addListener.\n     * @param listener - Callback function.\n     */ removeListener(listener) {\n        this.listeners = this.listeners.filter((l)=>l !== listener);\n    }\n    /**\n     * Registers a listener.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */ on(listener) {\n        return this.addListener(listener);\n    }\n    /**\n     * Unregisters a listener.\n     * @param listener - Callback function.\n     * @deprecated Use removeListener.\n     */ off(listener) {\n        return this.removeListener(listener);\n    }\n    /**\n     * Registers a listener then unregisters the listener after one event emission.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */ once(listener) {\n        return this.addListener(listener, {\n            once: true\n        });\n    }\n}\n\n\n\n\nclass $92ef9568286e94e7$export$83a8f2b4495394c4 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    /** @internal */ constructor(message){\n        super(message ? message : \"Request pending.\");\n    }\n}\n\n\n/**\n * An exchange of information (incoming INFO).\n * @public\n */ class $ca92780e96cf59eb$export$c4868e4a24d48fad {\n    /** @internal */ constructor(incomingInfoRequest){\n        this.incomingInfoRequest = incomingInfoRequest;\n    }\n    /** Incoming MESSAGE request message. */ get request() {\n        return this.incomingInfoRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingInfoRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingInfoRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n/**\n * A received message (incoming MESSAGE).\n * @public\n */ class $031801d494727803$export$f69c19e57285b83a {\n    /** @internal */ constructor(incomingMessageRequest){\n        this.incomingMessageRequest = incomingMessageRequest;\n    }\n    /** Incoming MESSAGE request message. */ get request() {\n        return this.incomingMessageRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingMessageRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingMessageRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n/**\n * A notification of an event (incoming NOTIFY).\n * @public\n */ class $305e86db02d77018$export$14834abbfce3b8cd {\n    /** @internal */ constructor(incomingNotifyRequest){\n        this.incomingNotifyRequest = incomingNotifyRequest;\n    }\n    /** Incoming NOTIFY request message. */ get request() {\n        return this.incomingNotifyRequest.message;\n    }\n    /** Accept the request. */ accept(options) {\n        this.incomingNotifyRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingNotifyRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n\n\n\nclass $785325132a53fe8a$export$85b1ddd8f58e2bc1 {\n    /** @internal */ constructor(incomingReferRequest, session){\n        this.incomingReferRequest = incomingReferRequest;\n        this.session = session;\n    }\n    get referTo() {\n        const referTo = this.incomingReferRequest.message.parseHeader(\"refer-to\");\n        if (!(referTo instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Failed to parse Refer-To header.\");\n        return referTo;\n    }\n    get referredBy() {\n        return this.incomingReferRequest.message.getHeader(\"referred-by\");\n    }\n    get replaces() {\n        const value = this.referTo.uri.getHeader(\"replaces\");\n        if (value instanceof Array) return value[0];\n        return value;\n    }\n    /** Incoming REFER request message. */ get request() {\n        return this.incomingReferRequest.message;\n    }\n    /** Accept the request. */ accept(options = {\n        statusCode: 202\n    }) {\n        this.incomingReferRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */ reject(options) {\n        this.incomingReferRequest.reject(options);\n        return Promise.resolve();\n    }\n    /**\n     * Creates an inviter which may be used to send an out of dialog INVITE request.\n     *\n     * @remarks\n     * This a helper method to create an Inviter which will execute the referral\n     * of the `Session` which was referred. The appropriate headers are set and\n     * the referred `Session` is linked to the new `Session`. Note that only a\n     * single instance of the `Inviter` will be created and returned (if called\n     * more than once a reference to the same `Inviter` will be returned every time).\n     *\n     * @param options - Options bucket.\n     * @param modifiers - Session description handler modifiers.\n     */ makeInviter(options) {\n        if (this.inviter) return this.inviter;\n        const targetURI = this.referTo.uri.clone();\n        targetURI.clearHeaders();\n        options = options || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const replaces = this.replaces;\n        if (replaces) // decodeURIComponent is a holdover from 2c086eb4. Not sure that it is actually necessary\n        extraHeaders.push(\"Replaces: \" + decodeURIComponent(replaces));\n        const referredBy = this.referredBy;\n        if (referredBy) extraHeaders.push(\"Referred-By: \" + referredBy);\n        options.extraHeaders = extraHeaders;\n        this.inviter = this.session.userAgent._makeInviter(targetURI, options);\n        this.inviter._referred = this.session;\n        this.session._referral = this.inviter;\n        return this.inviter;\n    }\n}\n\n\n\nclass $eae6918d36f972bb$export$1fb4852a55678982 {\n    /**\n     * Constructor.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @internal\n     */ constructor(userAgent, options = {}){\n        /** True if there is an outgoing re-INVITE request outstanding. */ this.pendingReinvite = false;\n        /** True if there is an incoming re-INVITE ACK request outstanding. */ this.pendingReinviteAck = false;\n        /** Session state. */ this._state = (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial;\n        this.delegate = options.delegate;\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        this._userAgent = userAgent;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        this.logger.log(`Session ${this.id} in state ${this._state} is being disposed`);\n        // Remove from the user agent's session collection\n        delete this.userAgent._sessions[this.id];\n        // Dispose of dialog media\n        if (this._sessionDescriptionHandler) this._sessionDescriptionHandler.close();\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return new Promise((resolve)=>{\n                    this._bye({\n                        // wait for the response to the BYE before resolving\n                        onAccept: ()=>resolve(),\n                        onRedirect: ()=>resolve(),\n                        onReject: ()=>resolve()\n                    });\n                });\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                break; // nothing to be done\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                break; // nothing to be done\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        return Promise.resolve();\n    }\n    /**\n     * The asserted identity of the remote user.\n     */ get assertedIdentity() {\n        return this._assertedIdentity;\n    }\n    /**\n     * The confirmed session dialog.\n     */ get dialog() {\n        return this._dialog;\n    }\n    /**\n     * A unique identifier for this session.\n     */ get id() {\n        return this._id;\n    }\n    /**\n     * The session being replace by this one.\n     */ get replacee() {\n        return this._replacee;\n    }\n    /**\n     * Session description handler.\n     * @remarks\n     * If `this` is an instance of `Invitation`,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * If `this` is an instance of `Inviter` and an offer was sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"establishing\".\n     * If `this` is an instance of `Inviter` and an offer was not sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * Otherwise `undefined`.\n     */ get sessionDescriptionHandler() {\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Session description handler factory.\n     */ get sessionDescriptionHandlerFactory() {\n        return this.userAgent.configuration.sessionDescriptionHandlerFactory;\n    }\n    /**\n     * SDH modifiers for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */ get sessionDescriptionHandlerModifiers() {\n        return this._sessionDescriptionHandlerModifiers || [];\n    }\n    set sessionDescriptionHandlerModifiers(modifiers) {\n        this._sessionDescriptionHandlerModifiers = modifiers.slice();\n    }\n    /**\n     * SDH options for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */ get sessionDescriptionHandlerOptions() {\n        return this._sessionDescriptionHandlerOptions || {};\n    }\n    set sessionDescriptionHandlerOptions(options) {\n        this._sessionDescriptionHandlerOptions = Object.assign({}, options);\n    }\n    /**\n     * SDH modifiers for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */ get sessionDescriptionHandlerModifiersReInvite() {\n        return this._sessionDescriptionHandlerModifiersReInvite || [];\n    }\n    set sessionDescriptionHandlerModifiersReInvite(modifiers) {\n        this._sessionDescriptionHandlerModifiersReInvite = modifiers.slice();\n    }\n    /**\n     * SDH options for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */ get sessionDescriptionHandlerOptionsReInvite() {\n        return this._sessionDescriptionHandlerOptionsReInvite || {};\n    }\n    set sessionDescriptionHandlerOptionsReInvite(options) {\n        this._sessionDescriptionHandlerOptionsReInvite = Object.assign({}, options);\n    }\n    /**\n     * Session state.\n     */ get state() {\n        return this._state;\n    }\n    /**\n     * Session state change emitter.\n     */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The user agent.\n     */ get userAgent() {\n        return this._userAgent;\n    }\n    /**\n     * End the {@link Session}. Sends a BYE.\n     * @param options - Options bucket. See {@link SessionByeOptions} for details.\n     */ bye(options = {}) {\n        let message = \"Session.bye() may only be called if established session.\";\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However Inviter.invite() has not yet been called.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                } else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called.\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However a dialog does not yet exist.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                } else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called (or not yet resolved).\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                {\n                    const requestDelegate = options.requestDelegate;\n                    const requestOptions = this.copyRequestOptions(options.requestOptions);\n                    return this._bye(requestDelegate, requestOptions);\n                }\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                message += \" However this session is already terminating.\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") message += \" Perhaps you have already called Inviter.cancel()?\";\n                else if (typeof this.reject === \"function\") message += \" Perhaps you have already called Session.bye()?\";\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                message += \" However this session is already terminated.\";\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.error(message);\n        return Promise.reject(new Error(`Invalid session state ${this.state}`));\n    }\n    /**\n     * Share {@link Info} with peer. Sends an INFO.\n     * @param options - Options bucket. See {@link SessionInfoOptions} for details.\n     */ info(options = {}) {\n        // guard session state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            const message = \"Session.info() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._info(requestDelegate, requestOptions);\n    }\n    /**\n     * Renegotiate the session. Sends a re-INVITE.\n     * @param options - Options bucket. See {@link SessionInviteOptions} for details.\n     */ invite(options = {}) {\n        this.logger.log(\"Session.invite\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        if (this.pendingReinvite) return Promise.reject(new (0, $92ef9568286e94e7$export$83a8f2b4495394c4)(\"Reinvite in progress. Please wait until complete, then try again.\"));\n        this.pendingReinvite = true;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptions;\n        const delegate = {\n            onAccept: (response)=>{\n                // A re-INVITE transaction has an offer/answer [RFC3264] exchange\n                // associated with it.  The UAC (User Agent Client) generating a given\n                // re-INVITE can act as the offerer or as the answerer.  A UAC willing\n                // to act as the offerer includes an offer in the re-INVITE.  The UAS\n                // (User Agent Server) then provides an answer in a response to the\n                // re-INVITE.  A UAC willing to act as answerer does not include an\n                // offer in the re-INVITE.  The UAS then provides an offer in a response\n                // to the re-INVITE becoming, thus, the offerer.\n                // https://tools.ietf.org/html/rfc6141#section-1\n                const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(response.message);\n                if (!body) {\n                    // No way to recover, so terminate session and mark as failed.\n                    this.logger.error(\"Received 2xx response to re-INVITE without a session description\");\n                    this.ackAndBye(response, 400, \"Missing session description\");\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    this.pendingReinvite = false;\n                    return;\n                }\n                if (options.withoutSdp) {\n                    // INVITE without SDP - set remote offer and send an answer in the ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setOfferAndGetAnswer(body, answerOptions).then((answerBody)=>{\n                        response.ack({\n                            body: answerBody\n                        });\n                    }).catch((error)=>{\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle offer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        if (this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) // A BYE should not be sent if already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        response.ack();\n                        else {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        }\n                    }).then(()=>{\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                    });\n                } else {\n                    // INVITE with SDP - set remote answer and send an ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setAnswer(body, answerOptions).then(()=>{\n                        response.ack();\n                    }).catch((error)=>{\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle answer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        // A BYE should only be sent if session is not already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        // The ACK needs to be sent regardless as it was not handled by the transaction.\n                        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        } else response.ack();\n                    }).then(()=>{\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                    });\n                }\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onProgress: (response)=>{\n                return;\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onRedirect: (response)=>{\n                return;\n            },\n            onReject: (response)=>{\n                this.logger.warn(\"Received a non-2xx response to re-INVITE\");\n                this.pendingReinvite = false;\n                if (options.withoutSdp) {\n                    if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                } else this.rollbackOffer().catch((error)=>{\n                    // No way to recover, so terminate session and mark as failed.\n                    this.logger.error(\"Failed to rollback offer on non-2xx response to re-INVITE\");\n                    this.logger.error(error.message);\n                    // A BYE should only be sent if session is not already terminated.\n                    // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                    // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                    if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n                        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n                        const extraHeaders = [];\n                        extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                        this.dialog.bye(undefined, {\n                            extraHeaders: extraHeaders\n                        });\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    }\n                }).then(()=>{\n                    if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                });\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onTrying: (response)=>{\n                return;\n            }\n        };\n        const requestOptions = options.requestOptions || {};\n        requestOptions.extraHeaders = (requestOptions.extraHeaders || []).slice();\n        requestOptions.extraHeaders.push(\"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString());\n        requestOptions.extraHeaders.push(\"Contact: \" + this._contact);\n        // Just send an INVITE with no sdp...\n        if (options.withoutSdp) {\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            return Promise.resolve(this.dialog.invite(delegate, requestOptions));\n        }\n        // Get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        return this.getOffer(offerOptions).then((offerBody)=>{\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            requestOptions.body = offerBody;\n            return this.dialog.invite(delegate, requestOptions);\n        }).catch((error)=>{\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to send re-INVITE\");\n            this.pendingReinvite = false;\n            throw error;\n        });\n    }\n    /**\n     * Deliver a {@link Message}. Sends a MESSAGE.\n     * @param options - Options bucket. See {@link SessionMessageOptions} for details.\n     */ message(options = {}) {\n        // guard session state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            const message = \"Session.message() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._message(requestDelegate, requestOptions);\n    }\n    /**\n     * Proffer a {@link Referral}. Send a REFER.\n     * @param referTo - The referral target. If a `Session`, a REFER w/Replaces is sent.\n     * @param options - Options bucket. See {@link SessionReferOptions} for details.\n     */ refer(referTo, options = {}) {\n        // guard session state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            const message = \"Session.refer() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        // REFER with Replaces (Attended Transfer) only supported with established sessions.\n        if (referTo instanceof $eae6918d36f972bb$export$1fb4852a55678982 && !referTo.dialog) {\n            const message = \"Session.refer() may only be called with session which is established. You are perhaps attempting to attended transfer to a target for which there is not dialog yet established. Perhaps you are attempting a 'semi-attended' tansfer? Regardless, this is not supported. The recommended approached is to check to see if the target Session is in the Established state before calling refer(); if the state is not Established you may proceed by falling back using a URI as the target (blind transfer).\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        requestOptions.extraHeaders = requestOptions.extraHeaders ? requestOptions.extraHeaders.concat(this.referExtraHeaders(this.referToString(referTo))) : this.referExtraHeaders(this.referToString(referTo));\n        return this._refer(options.onNotify, requestDelegate, requestOptions);\n    }\n    /**\n     * Send BYE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _bye(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        const dialog = this.dialog;\n        // The caller's UA MAY send a BYE for either confirmed or early dialogs,\n        // and the callee's UA MAY send a BYE on confirmed dialogs, but MUST NOT\n        // send a BYE on early dialogs. However, the callee's UA MUST NOT send a\n        // BYE on a confirmed dialog until it has received an ACK for its 2xx\n        // response or until the server transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        switch(dialog.sessionState){\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Initial:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Early:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).AckWait:\n                // This state only occurs if we are the callee.\n                this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating); // We're terminating\n                return new Promise((resolve)=>{\n                    dialog.delegate = {\n                        // When ACK shows up, say BYE.\n                        onAck: ()=>{\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                            resolve(request);\n                            return Promise.resolve();\n                        },\n                        // Or the server transaction times out before the ACK arrives.\n                        onAckTimeout: ()=>{\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                            resolve(request);\n                        }\n                    };\n                });\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Confirmed:\n                {\n                    const request = dialog.bye(delegate, options);\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve(request);\n                }\n            case (0, $12c24789242f875e$export$84bf1aca7aacb716).Terminated:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n    }\n    /**\n     * Send INFO.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _info(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        return Promise.resolve(this.dialog.info(delegate, options));\n    }\n    /**\n     * Send MESSAGE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _message(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        return Promise.resolve(this.dialog.message(delegate, options));\n    }\n    /**\n     * Send REFER.\n     * @param onNotify - Notification callback.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */ _refer(onNotify, delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) return Promise.reject(new Error(\"Session dialog undefined.\"));\n        // If set, deliver any in-dialog NOTIFY requests here...\n        this.onNotify = onNotify;\n        return Promise.resolve(this.dialog.refer(delegate, options));\n    }\n    /**\n     * Send ACK and then BYE. There are unrecoverable errors which can occur\n     * while handling dialog forming and in-dialog INVITE responses and when\n     * they occur we ACK the response and send a BYE.\n     * Note that the BYE is sent in the dialog associated with the response\n     * which is not necessarily `this.dialog`. And, accordingly, the\n     * session state is not transitioned to terminated and session is not closed.\n     * @param inviteResponse - The response causing the error.\n     * @param statusCode - Status code for he reason phrase.\n     * @param reasonPhrase - Reason phrase for the BYE.\n     * @internal\n     */ ackAndBye(response, statusCode, reasonPhrase) {\n        response.ack();\n        const extraHeaders = [];\n        if (statusCode) extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(statusCode, reasonPhrase));\n        // Using the dialog session associate with the response (which might not be this.dialog)\n        response.session.bye(undefined, {\n            extraHeaders: extraHeaders\n        });\n    }\n    /**\n     * Handle in dialog ACK request.\n     * @internal\n     */ onAckRequest(request) {\n        this.logger.log(\"Session.onAckRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating) {\n            this.logger.error(`ACK received while in state ${this.state}, dropping request`);\n            return Promise.resolve();\n        }\n        const dialog = this.dialog;\n        if (!dialog) throw new Error(\"Dialog undefined.\");\n        // if received answer in ACK.\n        const answerOptions = {\n            sessionDescriptionHandlerOptions: this.pendingReinviteAck ? this.sessionDescriptionHandlerOptionsReInvite : this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.pendingReinviteAck ? this._sessionDescriptionHandlerModifiersReInvite : this._sessionDescriptionHandlerModifiers\n        };\n        if (this.delegate && this.delegate.onAck) {\n            const ack = new (0, $56b90c466b43873c$export$a0eb6f8226b214ab)(request);\n            this.delegate.onAck(ack);\n        }\n        // reset pending ACK flag\n        this.pendingReinviteAck = false;\n        switch(dialog.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                {\n                    // State should never be reached as first reliable response must have answer/offer.\n                    // So we must have never has sent an offer.\n                    this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                    const extraHeaders = [\n                        \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                    ];\n                    dialog.bye(undefined, {\n                        extraHeaders: extraHeaders\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve();\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                {\n                    // State we should be in.\n                    // Either the ACK has the answer that got us here, or we were in this state prior to the ACK.\n                    const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(request.message);\n                    // If the ACK doesn't have an answer, nothing to be done.\n                    if (!body) return Promise.resolve();\n                    if (body.contentDisposition === \"render\") {\n                        this._renderbody = body.content;\n                        this._rendertype = body.contentType;\n                        return Promise.resolve();\n                    }\n                    if (body.contentDisposition !== \"session\") return Promise.resolve();\n                    return this.setAnswer(body, answerOptions).catch((error)=>{\n                        this.logger.error(error.message);\n                        const extraHeaders = [\n                            \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                        ];\n                        dialog.bye(undefined, {\n                            extraHeaders: extraHeaders\n                        });\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                {\n                    // State should never be reached as local offer would be answered by this ACK.\n                    // So we must have received an ACK without an answer.\n                    this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                    const extraHeaders = [\n                        \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                    ];\n                    dialog.bye(undefined, {\n                        extraHeaders: extraHeaders\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve();\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                {\n                    // State should never be reached as remote offer would be answered in first reliable response.\n                    // So we must have never has sent an answer.\n                    this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                    const extraHeaders = [\n                        \"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")\n                    ];\n                    dialog.bye(undefined, {\n                        extraHeaders: extraHeaders\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return Promise.resolve();\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Handle in dialog BYE request.\n     * @internal\n     */ onByeRequest(request) {\n        this.logger.log(\"Session.onByeRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`BYE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onBye) {\n            const bye = new (0, $d5afbbeee4be05d2$export$1030969e2d8a99b)(request);\n            this.delegate.onBye(bye);\n        } else request.accept();\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Handle in dialog INFO request.\n     * @internal\n     */ onInfoRequest(request) {\n        this.logger.log(\"Session.onInfoRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`INFO received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onInfo) {\n            const info = new (0, $ca92780e96cf59eb$export$c4868e4a24d48fad)(request);\n            this.delegate.onInfo(info);\n        } else // FIXME: TODO: We should reject request...\n        //\n        // If a UA receives an INFO request associated with an Info Package that\n        // the UA has not indicated willingness to receive, the UA MUST send a\n        // 469 (Bad Info Package) response (see Section 11.6), which contains a\n        // Recv-Info header field with Info Packages for which the UA is willing\n        // to receive INFO requests.\n        // https://tools.ietf.org/html/rfc6086#section-4.2.2\n        request.accept();\n    }\n    /**\n     * Handle in dialog INVITE request.\n     * @internal\n     */ onInviteRequest(request) {\n        this.logger.log(\"Session.onInviteRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`INVITE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // set pending ACK flag\n        this.pendingReinviteAck = true;\n        // TODO: would be nice to have core track and set the Contact header,\n        // but currently the session which is setting it is holding onto it.\n        const extraHeaders = [\n            \"Contact: \" + this._contact\n        ];\n        // Handle P-Asserted-Identity\n        if (request.message.hasHeader(\"P-Asserted-Identity\")) {\n            const header = request.message.getHeader(\"P-Asserted-Identity\");\n            if (!header) throw new Error(\"Header undefined.\");\n            this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(header);\n        }\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        this.generateResponseOfferAnswerInDialog(options).then((body)=>{\n            const outgoingResponse = request.accept({\n                statusCode: 200,\n                extraHeaders: extraHeaders,\n                body: body\n            });\n            if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 200);\n        }).catch((error)=>{\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to handle to re-INVITE request\");\n            if (!this.dialog) throw new Error(\"Dialog undefined.\");\n            this.logger.error(this.dialog.signalingState);\n            // If we don't have a local/remote offer...\n            if (this.dialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) {\n                const outgoingResponse = request.reject({\n                    statusCode: 488\n                }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                return;\n            }\n            // Otherwise rollback\n            this.rollbackOffer().then(()=>{\n                const outgoingResponse = request.reject({\n                    statusCode: 488\n                }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n            }).catch((errorRollback)=>{\n                // No way to recover, so terminate session and mark as failed.\n                this.logger.error(errorRollback.message);\n                this.logger.error(\"Failed to rollback offer on re-INVITE request\");\n                const outgoingResponse = request.reject({\n                    statusCode: 488\n                }); // Not Acceptable Here\n                // A BYE should only be sent if session is not already terminated.\n                // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n                    if (!this.dialog) throw new Error(\"Dialog undefined.\");\n                    const extraHeadersBye = [];\n                    extraHeadersBye.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                    this.dialog.bye(undefined, {\n                        extraHeaders: extraHeadersBye\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                }\n                if (this.delegate && this.delegate.onInvite) this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n            });\n        });\n    }\n    /**\n     * Handle in dialog MESSAGE request.\n     * @internal\n     */ onMessageRequest(request) {\n        this.logger.log(\"Session.onMessageRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`MESSAGE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onMessage) {\n            const message = new (0, $031801d494727803$export$f69c19e57285b83a)(request);\n            this.delegate.onMessage(message);\n        } else request.accept();\n    }\n    /**\n     * Handle in dialog NOTIFY request.\n     * @internal\n     */ onNotifyRequest(request) {\n        this.logger.log(\"Session.onNotifyRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`NOTIFY received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // If this a NOTIFY associated with the progress of a REFER,\n        // look to delegate handling to the associated callback.\n        if (this.onNotify) {\n            const notification = new (0, $305e86db02d77018$export$14834abbfce3b8cd)(request);\n            this.onNotify(notification);\n            return;\n        }\n        // Otherwise accept the NOTIFY.\n        if (this.delegate && this.delegate.onNotify) {\n            const notification = new (0, $305e86db02d77018$export$14834abbfce3b8cd)(request);\n            this.delegate.onNotify(notification);\n        } else request.accept();\n    }\n    /**\n     * Handle in dialog PRACK request.\n     * @internal\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onPrackRequest(request) {\n        this.logger.log(\"Session.onPrackRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`PRACK received while in state ${this.state}, dropping request`);\n            return;\n        }\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * Handle in dialog REFER request.\n     * @internal\n     */ onReferRequest(request) {\n        this.logger.log(\"Session.onReferRequest\");\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.error(`REFER received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // REFER is a SIP request and is constructed as defined in [1].  A REFER\n        // request MUST contain exactly one Refer-To header field value.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.1\n        if (!request.message.hasHeader(\"refer-to\")) {\n            this.logger.warn(\"Invalid REFER packet. A refer-to header is required. Rejecting.\");\n            request.reject();\n            return;\n        }\n        const referral = new (0, $785325132a53fe8a$export$85b1ddd8f58e2bc1)(request, this);\n        if (this.delegate && this.delegate.onRefer) this.delegate.onRefer(referral);\n        else {\n            this.logger.log(\"No delegate available to handle REFER, automatically accepting and following.\");\n            referral.accept().then(()=>referral.makeInviter(this._referralInviterOptions).invite()).catch((error)=>{\n                // FIXME: logging and eating error...\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request.\n     * If a remote offer was provided in the request, set the remote\n     * description and get a local answer. If a remote offer was not\n     * provided, generates a local offer.\n     * @internal\n     */ generateResponseOfferAnswer(request, options) {\n        if (this.dialog) return this.generateResponseOfferAnswerInDialog(options);\n        const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(request.message);\n        if (!body || body.contentDisposition !== \"session\") return this.getOffer(options);\n        else return this.setOfferAndGetAnswer(body, options);\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request\n     * when a dialog (early or otherwise) has already been established.\n     * This method may NOT be called if a dialog has yet to be established.\n     * @internal\n     */ generateResponseOfferAnswerInDialog(options) {\n        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n        switch(this.dialog.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                return this.getOffer(options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                return Promise.resolve(undefined);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                if (!this.dialog.offer) throw new Error(`Session offer undefined in signaling state ${this.dialog.signalingState}.`);\n                return this.setOfferAndGetAnswer(this.dialog.offer, options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) return Promise.resolve(undefined);\n                // In dialog INVITE without offer, get an offer for the response.\n                return this.getOffer(options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Get local offer.\n     * @internal\n     */ getOffer(options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh.getDescription(sdhOptions, sdhModifiers).then((bodyAndContentType)=>(0, $35e2f96fad41499f$export$46b123b754f2f425)(bodyAndContentType)).catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.getOffer: SDH getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.getOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.getOffer: SDH getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Rollback local/remote offer.\n     * @internal\n     */ rollbackOffer() {\n        const sdh = this.setupSessionDescriptionHandler();\n        if (sdh.rollbackDescription === undefined) return Promise.resolve();\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh.rollbackDescription().catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.rollbackOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote answer.\n     * @internal\n     */ setAnswer(answer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(answer.contentType)) return Promise.reject(new (0, $9bf0273360d9374b$export$9057181257c3c72f)());\n        } catch (error) {\n            this.logger.error(\"Session.setAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh.setDescription(answer.content, sdhOptions, sdhModifiers).catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setAnswer: SDH setDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setAnswer: SDH setDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote offer and get local answer.\n     * @internal\n     */ setOfferAndGetAnswer(offer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(offer.contentType)) return Promise.reject(new (0, $9bf0273360d9374b$export$9057181257c3c72f)());\n        } catch (error) {\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh.setDescription(offer.content, sdhOptions, sdhModifiers).then(()=>sdh.getDescription(sdhOptions, sdhModifiers)).then((bodyAndContentType)=>(0, $35e2f96fad41499f$export$46b123b754f2f425)(bodyAndContentType)).catch((error)=>{\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setOfferAndGetAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        } catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */ setSessionDescriptionHandler(sdh) {\n        if (this._sessionDescriptionHandler) throw new Error(\"Session description handler defined.\");\n        this._sessionDescriptionHandler = sdh;\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */ setupSessionDescriptionHandler() {\n        var _a;\n        if (this._sessionDescriptionHandler) return this._sessionDescriptionHandler;\n        this._sessionDescriptionHandler = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions);\n        if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) this.delegate.onSessionDescriptionHandler(this._sessionDescriptionHandler, false);\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Transition session state.\n     * @internal\n     */ stateTransition(newState) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch(this._state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating && newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                if (newState !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) invalidTransition();\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Session ${this.id} transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) this.dispose();\n    }\n    copyRequestOptions(requestOptions = {}) {\n        const extraHeaders = requestOptions.extraHeaders ? requestOptions.extraHeaders.slice() : undefined;\n        const body = requestOptions.body ? {\n            contentDisposition: requestOptions.body.contentDisposition || \"render\",\n            contentType: requestOptions.body.contentType || \"text/plain\",\n            content: requestOptions.body.content || \"\"\n        } : undefined;\n        return {\n            extraHeaders: extraHeaders,\n            body: body\n        };\n    }\n    getReasonHeaderValue(code, reason) {\n        const cause = code;\n        let text = (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(code);\n        if (!text && reason) text = reason;\n        return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n    }\n    referExtraHeaders(referTo) {\n        const extraHeaders = [];\n        extraHeaders.push(\"Referred-By: <\" + this.userAgent.configuration.uri + \">\");\n        extraHeaders.push(\"Contact: \" + this._contact);\n        extraHeaders.push(\"Allow: \" + [\n            \"ACK\",\n            \"CANCEL\",\n            \"INVITE\",\n            \"MESSAGE\",\n            \"BYE\",\n            \"OPTIONS\",\n            \"INFO\",\n            \"NOTIFY\",\n            \"REFER\"\n        ].toString());\n        extraHeaders.push(\"Refer-To: \" + referTo);\n        return extraHeaders;\n    }\n    referToString(target) {\n        let referTo;\n        if (target instanceof (0, $dbdae61072997c03$export$9156e739aa33e19f)) // REFER without Replaces (Blind Transfer)\n        referTo = target.toString();\n        else {\n            // REFER with Replaces (Attended Transfer)\n            if (!target.dialog) throw new Error(\"Dialog undefined.\");\n            const displayName = target.remoteIdentity.friendlyName;\n            const remoteTarget = target.dialog.remoteTarget.toString();\n            const callId = target.dialog.callId;\n            const remoteTag = target.dialog.remoteTag;\n            const localTag = target.dialog.localTag;\n            const replaces = encodeURIComponent(`${callId};to-tag=${remoteTag};from-tag=${localTag}`);\n            referTo = `\"${displayName}\" <${remoteTarget}?Replaces=${replaces}>`;\n        }\n        return referTo;\n    }\n}\n\n\n\n/**\n * SIP extension support level.\n * @public\n */ var $546aa63f60a92037$export$7ddf33a7d88270b4;\n(function(SIPExtension) {\n    SIPExtension[\"Required\"] = \"Required\";\n    SIPExtension[\"Supported\"] = \"Supported\";\n    SIPExtension[\"Unsupported\"] = \"Unsupported\";\n})($546aa63f60a92037$export$7ddf33a7d88270b4 = $546aa63f60a92037$export$7ddf33a7d88270b4 || ($546aa63f60a92037$export$7ddf33a7d88270b4 = {}));\nconst $546aa63f60a92037$export$abeafd9e99196554 = {\n    \"100rel\": true,\n    \"199\": true,\n    answermode: true,\n    \"early-session\": true,\n    eventlist: true,\n    explicitsub: true,\n    \"from-change\": true,\n    \"geolocation-http\": true,\n    \"geolocation-sip\": true,\n    gin: true,\n    gruu: true,\n    histinfo: true,\n    ice: true,\n    join: true,\n    \"multiple-refer\": true,\n    norefersub: true,\n    nosub: true,\n    outbound: true,\n    path: true,\n    policy: true,\n    precondition: true,\n    pref: true,\n    privacy: true,\n    \"recipient-list-invite\": true,\n    \"recipient-list-message\": true,\n    \"recipient-list-subscribe\": true,\n    replaces: true,\n    \"resource-priority\": true,\n    \"sdp-anat\": true,\n    \"sec-agree\": true,\n    tdialog: true,\n    timer: true,\n    uui: true // RFC 7433\n};\n\n\nclass $a6342d8a5fcabb95$export$d899bafc7f84ca89 extends (0, $eae6918d36f972bb$export$1fb4852a55678982) {\n    /** @internal */ constructor(userAgent, incomingInviteRequest){\n        super(userAgent);\n        this.incomingInviteRequest = incomingInviteRequest;\n        /** True if dispose() has been called. */ this.disposed = false;\n        /** INVITE will be rejected if not accepted within a certain period time. */ this.expiresTimer = undefined;\n        /** True if this Session has been Terminated due to a CANCEL request. */ this.isCanceled = false;\n        /** Are reliable provisional responses required or supported. */ this.rel100 = \"none\";\n        /** The current RSeq header value. */ this.rseq = Math.floor(Math.random() * 10000);\n        /** INVITE will be rejected if final response not sent in a certain period time. */ this.userNoAnswerTimer = undefined;\n        /** True if waiting for a PRACK before sending a 200 Ok. */ this.waitingForPrack = false;\n        this.logger = userAgent.getLogger(\"sip.Invitation\");\n        const incomingRequestMessage = this.incomingInviteRequest.message;\n        // Set 100rel if necessary\n        const requireHeader = incomingRequestMessage.getHeader(\"require\");\n        if (requireHeader && requireHeader.toLowerCase().includes(\"100rel\")) this.rel100 = \"required\";\n        const supportedHeader = incomingRequestMessage.getHeader(\"supported\");\n        if (supportedHeader && supportedHeader.toLowerCase().includes(\"100rel\")) this.rel100 = \"supported\";\n        // FIXME: HACK: This is a hack to port an existing behavior.\n        // Set the toTag on the incoming request message to the toTag which\n        // will be used in the response to the incoming request!!!\n        // The behavior being ported appears to be a hack itself,\n        // so this is a hack to port a hack. At least one test spec\n        // relies on it (which is yet another hack).\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        incomingRequestMessage.toTag = incomingInviteRequest.toTag;\n        if (typeof incomingRequestMessage.toTag !== \"string\") throw new TypeError(\"toTag should have been a string.\");\n        // The following mapping values are RECOMMENDED:\n        // ...\n        // 19 no answer from the user              480 Temporarily unavailable\n        // https://tools.ietf.org/html/rfc3398#section-7.2.4.1\n        this.userNoAnswerTimer = setTimeout(()=>{\n            incomingInviteRequest.reject({\n                statusCode: 480\n            });\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        }, this.userAgent.configuration.noAnswerTimeout ? this.userAgent.configuration.noAnswerTimeout * 1000 : 60000);\n        // 1. If the request is an INVITE that contains an Expires header\n        // field, the UAS core sets a timer for the number of seconds\n        // indicated in the header field value.  When the timer fires, the\n        // invitation is considered to be expired.  If the invitation\n        // expires before the UAS has generated a final response, a 487\n        // (Request Terminated) response SHOULD be generated.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1\n        if (incomingRequestMessage.hasHeader(\"expires\")) {\n            const expires = Number(incomingRequestMessage.getHeader(\"expires\") || 0) * 1000;\n            this.expiresTimer = setTimeout(()=>{\n                if (this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) {\n                    incomingInviteRequest.reject({\n                        statusCode: 487\n                    });\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                }\n            }, expires);\n        }\n        // Session parent properties\n        const assertedIdentity = this.request.getHeader(\"P-Asserted-Identity\");\n        if (assertedIdentity) this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(assertedIdentity);\n        this._contact = this.userAgent.contact.toString();\n        const contentDisposition = incomingRequestMessage.parseHeader(\"Content-Disposition\");\n        if (contentDisposition && contentDisposition.type === \"render\") {\n            this._renderbody = incomingRequestMessage.body;\n            this._rendertype = incomingRequestMessage.getHeader(\"Content-Type\");\n        }\n        // Identifier\n        this._id = incomingRequestMessage.callId + incomingRequestMessage.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        // Clear timers\n        if (this.expiresTimer) {\n            clearTimeout(this.expiresTimer);\n            this.expiresTimer = undefined;\n        }\n        if (this.userNoAnswerTimer) {\n            clearTimeout(this.userNoAnswerTimer);\n            this.userNoAnswerTimer = undefined;\n        }\n        // If accept() is still waiting for a PRACK, make sure it rejects\n        this.prackNeverArrived();\n        // If the final response for the initial INVITE not yet been sent, reject it\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                return this.reject().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                return this.reject().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * If true, a first provisional response after the 100 Trying\n     * will be sent automatically. This is false it the UAC required\n     * reliable provisional responses (100rel in Require header) or\n     * the user agent configuration has specified to not send an\n     * initial response, otherwise it is true. The provisional is sent by\n     * calling `progress()` without any options.\n     */ get autoSendAnInitialProvisionalResponse() {\n        return this.rel100 !== \"required\" && this.userAgent.configuration.sendInitialProvisionalResponse;\n    }\n    /**\n     * Initial incoming INVITE request message body.\n     */ get body() {\n        return this.incomingInviteRequest.message.body;\n    }\n    /**\n     * The identity of the local user.\n     */ get localIdentity() {\n        return this.request.to;\n    }\n    /**\n     * The identity of the remote user.\n     */ get remoteIdentity() {\n        return this.request.from;\n    }\n    /**\n     * Initial incoming INVITE request message.\n     */ get request() {\n        return this.incomingInviteRequest.message;\n    }\n    /**\n     * Accept the invitation.\n     *\n     * @remarks\n     * Accept the incoming INVITE request to start a Session.\n     * Replies to the INVITE request with a 200 Ok response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * This method may reject for a variety of reasons including\n     * the receipt of a CANCEL request before `accept` is able\n     * to construct a response.\n     * @param options - Options bucket.\n     */ accept(options = {}) {\n        this.logger.log(\"Invitation.accept\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing);\n        return this.sendAccept(options)// eslint-disable-next-line @typescript-eslint/no-unused-vars\n        .then(({ message: message, session: session })=>{\n            session.delegate = {\n                onAck: (ackRequest)=>this.onAckRequest(ackRequest),\n                onAckTimeout: ()=>this.onAckTimeout(),\n                onBye: (byeRequest)=>this.onByeRequest(byeRequest),\n                onInfo: (infoRequest)=>this.onInfoRequest(infoRequest),\n                onInvite: (inviteRequest)=>this.onInviteRequest(inviteRequest),\n                onMessage: (messageRequest)=>this.onMessageRequest(messageRequest),\n                onNotify: (notifyRequest)=>this.onNotifyRequest(notifyRequest),\n                onPrack: (prackRequest)=>this.onPrackRequest(prackRequest),\n                onRefer: (referRequest)=>this.onReferRequest(referRequest)\n            };\n            this._dialog = session;\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n            // TODO: Reconsider this \"automagic\" send of a BYE to replacee behavior.\n            // This behavior has been ported forward from legacy versions.\n            if (this._replacee) this._replacee._bye();\n        }).catch((error)=>this.handleResponseError(error));\n    }\n    /**\n     * Indicate progress processing the invitation.\n     *\n     * @remarks\n     * Report progress to the the caller.\n     * Replies to the INVITE request with a 1xx provisional response.\n     * Resolves once the response sent, otherwise rejects.\n     * @param options - Options bucket.\n     */ progress(options = {}) {\n        this.logger.log(\"Invitation.progress\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Ported\n        const statusCode = options.statusCode || 180;\n        if (statusCode < 100 || statusCode > 199) throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // After the first reliable provisional response for a request has been\n        // acknowledged, the UAS MAY send additional reliable provisional\n        // responses.  The UAS MUST NOT send a second reliable provisional\n        // response until the first is acknowledged.  After the first, it is\n        // RECOMMENDED that the UAS not send an additional reliable provisional\n        // response until the previous is acknowledged.  The first reliable\n        // provisional response receives special treatment because it conveys\n        // the initial sequence number.  If additional reliable provisional\n        // responses were sent before the first was acknowledged, the UAS could\n        // not be certain these were received in order.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) {\n            this.logger.warn(\"Unexpected call for progress while waiting for prack, ignoring\");\n            return Promise.resolve();\n        }\n        // Trying provisional response\n        if (options.statusCode === 100) return this.sendProgressTrying().then(()=>{\n            return;\n        }).catch((error)=>this.handleResponseError(error));\n        // Standard provisional response\n        if (!(this.rel100 === \"required\") && !(this.rel100 === \"supported\" && options.rel100) && !(this.rel100 === \"supported\" && this.userAgent.configuration.sipExtension100rel === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Required)) return this.sendProgress(options).then(()=>{\n            return;\n        }).catch((error)=>this.handleResponseError(error));\n        // Reliable provisional response\n        return this.sendProgressReliableWaitForPrack(options).then(()=>{\n            return;\n        }).catch((error)=>this.handleResponseError(error));\n    }\n    /**\n     * Reject the invitation.\n     *\n     * @remarks\n     * Replies to the INVITE request with a 4xx, 5xx, or 6xx final response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * The expectation is that this method is used to reject an INVITE request.\n     * That is indeed the case - a call to `progress` followed by `reject` is\n     * a typical way to \"decline\" an incoming INVITE request. However it may\n     * also be called after calling `accept` (but only before it completes)\n     * which will reject the call and cause `accept` to reject.\n     * @param options - Options bucket.\n     */ reject(options = {}) {\n        this.logger.log(\"Invitation.reject\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        const statusCode = options.statusCode || 480;\n        const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(statusCode);\n        const extraHeaders = options.extraHeaders || [];\n        if (statusCode < 300 || statusCode > 699) throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        const body = options.body ? (0, $35e2f96fad41499f$export$46b123b754f2f425)(options.body) : undefined;\n        // FIXME: Need to redirect to someplace\n        statusCode < 400 ? this.incomingInviteRequest.redirect([], {\n            statusCode: statusCode,\n            reasonPhrase: reasonPhrase,\n            extraHeaders: extraHeaders,\n            body: body\n        }) : this.incomingInviteRequest.reject({\n            statusCode: statusCode,\n            reasonPhrase: reasonPhrase,\n            extraHeaders: extraHeaders,\n            body: body\n        });\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        return Promise.resolve();\n    }\n    /**\n     * Handle CANCEL request.\n     *\n     * @param message - CANCEL message.\n     * @internal\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    _onCancel(message) {\n        this.logger.log(\"Invitation._onCancel\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`CANCEL received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onCancel) {\n            const cancel = new (0, $24df438dfb566a5a$export$848c9b7ead0df967)(message);\n            this.delegate.onCancel(cancel);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // reject INVITE with 487 status code\n        this.incomingInviteRequest.reject({\n            statusCode: 487\n        });\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Helper function to handle offer/answer in a PRACK.\n     */ handlePrackOfferAnswer(request) {\n        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n        // If the PRACK doesn't have an offer/answer, nothing to be done.\n        const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(request.message);\n        if (!body || body.contentDisposition !== \"session\") return Promise.resolve(undefined);\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        // If the UAC receives a reliable provisional response with an offer\n        // (this would occur if the UAC sent an INVITE without an offer, in\n        // which case the first reliable provisional response will contain the\n        // offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        // a reliable provisional response with an answer, it MAY generate an\n        // additional offer in the PRACK.  If the UAS receives a PRACK with an\n        // offer, it MUST place the answer in the 2xx to the PRACK.\n        // https://tools.ietf.org/html/rfc3262#section-5\n        switch(this.dialog.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                // State should never be reached as first reliable provisional response must have answer/offer.\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                // Receved answer.\n                return this.setAnswer(body, options).then(()=>undefined);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // State should never be reached as local offer would be answered by this PRACK\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                // Received offer, generate answer.\n                return this.setOfferAndGetAnswer(body, options);\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * A handler for errors which occur while attempting to send 1xx and 2xx responses.\n     * In all cases, an attempt is made to reject the request if it is still outstanding.\n     * And while there are a variety of things which can go wrong and we log something here\n     * for all errors, there are a handful of common exceptions we pay some extra attention to.\n     * @param error - The error which occurred.\n     */ handleResponseError(error) {\n        let statusCode = 480; // \"Temporarily Unavailable\"\n        // Log Error message\n        if (error instanceof Error) this.logger.error(error.message);\n        else // We don't actually know what a session description handler implementation might throw our way,\n        // and more generally as a last resort catch all, just assume we are getting an \"unknown\" and log it.\n        this.logger.error(error);\n        // Log Exception message\n        if (error instanceof (0, $9bf0273360d9374b$export$9057181257c3c72f)) {\n            this.logger.error(\"A session description handler occurred while sending response (content type unsupported\");\n            statusCode = 415; // \"Unsupported Media Type\"\n        } else if (error instanceof (0, $2f6becfc657677bb$export$371a565fed7d7f84)) this.logger.error(\"A session description handler occurred while sending response\");\n        else if (error instanceof (0, $49bb337e8869494e$export$3f32b591920dbfba)) this.logger.error(\"Session ended before response could be formulated and sent (while waiting for PRACK)\");\n        else if (error instanceof (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)) this.logger.error(\"Session changed state before response could be formulated and sent\");\n        // Reject if still in \"initial\" or \"establishing\" state.\n        if (this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial || this.state === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) try {\n            this.incomingInviteRequest.reject({\n                statusCode: statusCode\n            });\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        } catch (e) {\n            this.logger.error(\"An error occurred attempting to reject the request while handling another error\");\n            throw e; // This is not a good place to be...\n        }\n        // FIXME: TODO:\n        // Here we are squelching the throwing of errors due to an race condition.\n        // We have an internal race between calling `accept()` and handling an incoming\n        // CANCEL request. As there is no good way currently to delegate the handling of\n        // these race errors to the caller of `accept()`, we are squelching the throwing\n        // of ALL errors when/if they occur after receiving a CANCEL to catch the ONE we know\n        // is a \"normal\" exceptional condition. While this is a completely reasonable approach,\n        // the decision should be left up to the library user. Furthermore, as we are eating\n        // ALL errors in this case, we are potentially (likely) hiding \"real\" errors which occur.\n        //\n        // Only rethrow error if the session has not been canceled.\n        if (this.isCanceled) {\n            this.logger.warn(\"An error occurred while attempting to formulate and send a response to an incoming INVITE. However a CANCEL was received and processed while doing so which can (and often does) result in errors occurring as the session terminates in the meantime. Said error is being ignored.\");\n            return;\n        }\n        throw error;\n    }\n    /**\n     * Callback for when ACK for a 2xx response is never received.\n     * @param session - Session the ACK never arrived for.\n     */ onAckTimeout() {\n        this.logger.log(\"Invitation.onAckTimeout\");\n        if (!this.dialog) throw new Error(\"Dialog undefined.\");\n        this.logger.log(\"No ACK received for an extended period of time, terminating session\");\n        this.dialog.bye();\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * A version of `accept` which resolves a session when the 200 Ok response is sent.\n     * @param options - Options bucket.\n     */ sendAccept(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const extraHeaders = options.extraHeaders || [];\n        // The UAS MAY send a final response to the initial request before\n        // having received PRACKs for all unacknowledged reliable provisional\n        // responses, unless the final response is 2xx and any of the\n        // unacknowledged reliable provisional responses contained a session\n        // description.  In that case, it MUST NOT send a final response until\n        // those provisional responses are acknowledged.  If the UAS does send a\n        // final response when reliable responses are still unacknowledged, it\n        // SHOULD NOT continue to retransmit the unacknowledged reliable\n        // provisional responses, but it MUST be prepared to process PRACK\n        // requests for those outstanding responses.  A UAS MUST NOT send new\n        // reliable provisional responses (as opposed to retransmissions of\n        // unacknowledged ones) after sending a final response to a request.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) return this.waitForArrivalOfPrack().then(()=>clearTimeout(this.userNoAnswerTimer)) // Ported\n        .then(()=>this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions)).then((body)=>this.incomingInviteRequest.accept({\n                statusCode: 200,\n                body: body,\n                extraHeaders: extraHeaders\n            }));\n        clearTimeout(this.userNoAnswerTimer); // Ported\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((body)=>this.incomingInviteRequest.accept({\n                statusCode: 200,\n                body: body,\n                extraHeaders: extraHeaders\n            }));\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response is sent.\n     * @param options - Options bucket.\n     */ sendProgress(options = {}) {\n        const statusCode = options.statusCode || 180;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const body = options.body ? (0, $35e2f96fad41499f$export$46b123b754f2f425)(options.body) : undefined;\n        // The 183 (Session Progress) response is used to convey information\n        // about the progress of the call that is not otherwise classified.  The\n        // Reason-Phrase, header fields, or message body MAY be used to convey\n        // more details about the call progress.\n        // https://tools.ietf.org/html/rfc3261#section-21.1.5\n        // It is the de facto industry standard to utilize 183 with SDP to provide \"early media\".\n        // While it is unlikely someone would want to send a 183 without SDP, so it should be an option.\n        if (statusCode === 183 && !body) return this.sendProgressWithSDP(options);\n        try {\n            const progressResponse = this.incomingInviteRequest.progress({\n                statusCode: statusCode,\n                reasonPhrase: reasonPhrase,\n                extraHeaders: extraHeaders,\n                body: body\n            });\n            this._dialog = progressResponse.session;\n            return Promise.resolve(progressResponse);\n        } catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response with sdp is sent.\n     * @param options - Options bucket.\n     */ sendProgressWithSDP(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Get an offer/answer and send a reply.\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((body)=>this.incomingInviteRequest.progress({\n                statusCode: statusCode,\n                reasonPhrase: reasonPhrase,\n                extraHeaders: extraHeaders,\n                body: body\n            })).then((progressResponse)=>{\n            this._dialog = progressResponse.session;\n            return progressResponse;\n        });\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is sent.\n     * @param options - Options bucket.\n     */ sendProgressReliable(options = {}) {\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(\"Require: 100rel\");\n        options.extraHeaders.push(\"RSeq: \" + Math.floor(Math.random() * 10000));\n        return this.sendProgressWithSDP(options);\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is acknowledged.\n     * @param options - Options bucket.\n     */ sendProgressReliableWaitForPrack(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        extraHeaders.push(\"Require: 100rel\");\n        extraHeaders.push(\"RSeq: \" + this.rseq++);\n        let body;\n        return new Promise((resolve, reject)=>{\n            this.waitingForPrack = true;\n            this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((offerAnswer)=>{\n                body = offerAnswer;\n                return this.incomingInviteRequest.progress({\n                    statusCode: statusCode,\n                    reasonPhrase: reasonPhrase,\n                    extraHeaders: extraHeaders,\n                    body: body\n                });\n            }).then((progressResponse)=>{\n                this._dialog = progressResponse.session;\n                let prackRequest;\n                let prackResponse;\n                progressResponse.session.delegate = {\n                    onPrack: (request)=>{\n                        prackRequest = request;\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(prackWaitTimeoutTimer);\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(rel1xxRetransmissionTimer);\n                        if (!this.waitingForPrack) return;\n                        this.waitingForPrack = false;\n                        this.handlePrackOfferAnswer(prackRequest).then((prackResponseBody)=>{\n                            try {\n                                prackResponse = prackRequest.accept({\n                                    statusCode: 200,\n                                    body: prackResponseBody\n                                });\n                                this.prackArrived();\n                                resolve({\n                                    prackRequest: prackRequest,\n                                    prackResponse: prackResponse,\n                                    progressResponse: progressResponse\n                                });\n                            } catch (error) {\n                                reject(error);\n                            }\n                        }).catch((error)=>reject(error));\n                    }\n                };\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const prackWaitTimeout = ()=>{\n                    if (!this.waitingForPrack) return;\n                    this.waitingForPrack = false;\n                    this.logger.warn(\"No PRACK received, rejecting INVITE.\");\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    clearTimeout(rel1xxRetransmissionTimer);\n                    this.reject({\n                        statusCode: 504\n                    }).then(()=>reject(new (0, $49bb337e8869494e$export$3f32b591920dbfba)())).catch((error)=>reject(error));\n                };\n                const prackWaitTimeoutTimer = setTimeout(prackWaitTimeout, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1 * 64);\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const rel1xxRetransmission = ()=>{\n                    try {\n                        this.incomingInviteRequest.progress({\n                            statusCode: statusCode,\n                            reasonPhrase: reasonPhrase,\n                            extraHeaders: extraHeaders,\n                            body: body\n                        });\n                    } catch (error) {\n                        this.waitingForPrack = false;\n                        reject(error);\n                        return;\n                    }\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, timeout *= 2);\n                };\n                let timeout = (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1;\n                let rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, timeout);\n            }).catch((error)=>{\n                this.waitingForPrack = false;\n                reject(error);\n            });\n        });\n    }\n    /**\n     * A version of `progress` which resolves when a 100 Trying provisional response is sent.\n     */ sendProgressTrying() {\n        try {\n            const progressResponse = this.incomingInviteRequest.trying();\n            return Promise.resolve(progressResponse);\n        } catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * When attempting to accept the INVITE, an invitation waits\n     * for any outstanding PRACK to arrive before sending the 200 Ok.\n     * It will be waiting on this Promise to resolve which lets it know\n     * the PRACK has arrived and it may proceed to send the 200 Ok.\n     */ waitForArrivalOfPrack() {\n        if (this.waitingForPrackPromise) throw new Error(\"Already waiting for PRACK\");\n        this.waitingForPrackPromise = new Promise((resolve, reject)=>{\n            this.waitingForPrackResolve = resolve;\n            this.waitingForPrackReject = reject;\n        });\n        return this.waitingForPrackPromise;\n    }\n    /**\n     * Here we are resolving the promise which in turn will cause\n     * the accept to proceed (it may still fail for other reasons, but...).\n     */ prackArrived() {\n        if (this.waitingForPrackResolve) this.waitingForPrackResolve();\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n    /**\n     * Here we are rejecting the promise which in turn will cause\n     * the accept to fail and the session to transition to \"terminated\".\n     */ prackNeverArrived() {\n        if (this.waitingForPrackReject) this.waitingForPrackReject(new (0, $49bb337e8869494e$export$3f32b591920dbfba)());\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n}\n\n\n\n\n\n\n\n\n\nclass $989df868235ee8e3$export$2215cc52469fcfa0 extends (0, $eae6918d36f972bb$export$1fb4852a55678982) {\n    /**\n     * Constructs a new instance of the `Inviter` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param options - Options bucket. See {@link InviterOptions} for details.\n     */ constructor(userAgent, targetURI, options = {}){\n        super(userAgent, options);\n        /** True if dispose() has been called. */ this.disposed = false;\n        /** True if early media use is enabled. */ this.earlyMedia = false;\n        /** The early media session description handlers. */ this.earlyMediaSessionDescriptionHandlers = new Map();\n        /** True if cancel() was called. */ this.isCanceled = false;\n        /** True if initial INVITE without SDP. */ this.inviteWithoutSdp = false;\n        this.logger = userAgent.getLogger(\"sip.Inviter\");\n        // Early media\n        this.earlyMedia = options.earlyMedia !== undefined ? options.earlyMedia : this.earlyMedia;\n        // From tag\n        this.fromTag = (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)();\n        // Invite without SDP\n        this.inviteWithoutSdp = options.inviteWithoutSdp !== undefined ? options.inviteWithoutSdp : this.inviteWithoutSdp;\n        // Inviter options (could do better copying these options)\n        const inviterOptions = Object.assign({}, options);\n        inviterOptions.params = Object.assign({}, options.params);\n        // Anonymous call\n        const anonymous = options.anonymous || false;\n        // Contact\n        const contact = userAgent.contact.toString({\n            anonymous: anonymous,\n            // Do not add ;ob in initial forming dialog requests if the\n            // registration over the current connection got a GRUU URI.\n            outbound: anonymous ? !userAgent.contact.tempGruu : !userAgent.contact.pubGruu\n        });\n        // FIXME: TODO: We should not be parsing URIs here as if it fails we have to throw an exception\n        // which is not something we want our constructor to do. URIs should be passed in as params.\n        // URIs\n        if (anonymous && userAgent.configuration.uri) {\n            inviterOptions.params.fromDisplayName = \"Anonymous\";\n            inviterOptions.params.fromUri = \"sip:anonymous@anonymous.invalid\";\n        }\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (inviterOptions.params.fromUri) fromURI = typeof inviterOptions.params.fromUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(inviterOptions.params.fromUri) : inviterOptions.params.fromUri;\n        if (!fromURI) throw new TypeError(\"Invalid from URI: \" + inviterOptions.params.fromUri);\n        let toURI = targetURI;\n        if (inviterOptions.params.toUri) toURI = typeof inviterOptions.params.toUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(inviterOptions.params.toUri) : inviterOptions.params.toUri;\n        if (!toURI) throw new TypeError(\"Invalid to URI: \" + inviterOptions.params.toUri);\n        // Params\n        const messageOptions = Object.assign({}, inviterOptions.params);\n        messageOptions.fromTag = this.fromTag;\n        // Extra headers\n        const extraHeaders = (inviterOptions.extraHeaders || []).slice();\n        if (anonymous && userAgent.configuration.uri) {\n            extraHeaders.push(\"P-Preferred-Identity: \" + userAgent.configuration.uri.toString());\n            extraHeaders.push(\"Privacy: id\");\n        }\n        extraHeaders.push(\"Contact: \" + contact);\n        extraHeaders.push(\"Allow: \" + [\n            \"ACK\",\n            \"CANCEL\",\n            \"INVITE\",\n            \"MESSAGE\",\n            \"BYE\",\n            \"OPTIONS\",\n            \"INFO\",\n            \"NOTIFY\",\n            \"REFER\"\n        ].toString());\n        if (userAgent.configuration.sipExtension100rel === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Required) extraHeaders.push(\"Require: 100rel\");\n        if (userAgent.configuration.sipExtensionReplaces === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Required) extraHeaders.push(\"Require: replaces\");\n        inviterOptions.extraHeaders = extraHeaders;\n        // Body\n        const body = undefined;\n        // Make initial outgoing request message\n        this.outgoingRequestMessage = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE, targetURI, fromURI, toURI, messageOptions, extraHeaders, body);\n        // Session parent properties\n        this._contact = contact;\n        this._referralInviterOptions = inviterOptions;\n        this._renderbody = options.renderbody;\n        this._rendertype = options.rendertype;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // Modifiers and options for re-INVITE transactions\n        if (options.sessionDescriptionHandlerModifiersReInvite) this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiersReInvite;\n        if (options.sessionDescriptionHandlerOptionsReInvite) this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptionsReInvite;\n        // Identifier\n        this._id = this.outgoingRequestMessage.callId + this.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        // Dispose of early dialog media\n        this.disposeEarlyMedia();\n        // If the final response for the initial INVITE not yet been received, cancel it\n        switch(this.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                return this.cancel().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                return this.cancel().then(()=>super.dispose());\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                return super.dispose();\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * Initial outgoing INVITE request message body.\n     */ get body() {\n        return this.outgoingRequestMessage.body;\n    }\n    /**\n     * The identity of the local user.\n     */ get localIdentity() {\n        return this.outgoingRequestMessage.from;\n    }\n    /**\n     * The identity of the remote user.\n     */ get remoteIdentity() {\n        return this.outgoingRequestMessage.to;\n    }\n    /**\n     * Initial outgoing INVITE request message.\n     */ get request() {\n        return this.outgoingRequestMessage;\n    }\n    /**\n     * Cancels the INVITE request.\n     *\n     * @remarks\n     * Sends a CANCEL request.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * After sending a CANCEL request the expectation is that a 487 final response\n     * will be received for the INVITE. However a 200 final response to the INVITE\n     * may nonetheless arrive (it's a race between the CANCEL reaching the UAS before\n     * the UAS sends a 200) in which case an ACK & BYE will be sent. The net effect\n     * is that this method will terminate the session regardless of the race.\n     * @param options - Options bucket.\n     */ cancel(options = {}) {\n        this.logger.log(\"Inviter.cancel\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating);\n        // helper function\n        function getCancelReason(code, reason) {\n            if (code && code < 200 || code > 699) throw new TypeError(\"Invalid statusCode: \" + code);\n            else if (code) {\n                const cause = code;\n                const text = (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(code) || reason;\n                return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n            }\n        }\n        if (this.outgoingInviteRequest) {\n            // the CANCEL may not be respected by peer(s), so don't transition to terminated\n            let cancelReason;\n            if (options.statusCode && options.reasonPhrase) cancelReason = getCancelReason(options.statusCode, options.reasonPhrase);\n            this.outgoingInviteRequest.cancel(cancelReason, options);\n        } else {\n            this.logger.warn(\"Canceled session before INVITE was sent\");\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Sends the INVITE request.\n     *\n     * @remarks\n     * TLDR...\n     *  1) Only one offer/answer exchange permitted during initial INVITE.\n     *  2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *  3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * 1) Only one offer/answer exchange permitted during initial INVITE.\n     *\n     * Our implementation replaces the following bullet point...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MAY generate subsequent offers in requests based on rules\n     *    specified for that method, but only if it has received answers\n     *    to any previous offers, and has not sent any offers to which it\n     *    hasn't gotten an answer.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...with...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MUST NOT generate subsequent offers in requests based on rules\n     *    specified for that method.\n     *\n     * ...which in combination with this bullet point...\n     *\n     * o  Once the UAS has sent or received an answer to the initial\n     *    offer, it MUST NOT generate subsequent offers in any responses\n     *    to the initial INVITE.  This means that a UAS based on this\n     *    specification alone can never generate subsequent offers until\n     *    completion of the initial transaction.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...ensures that EXACTLY ONE offer/answer exchange will occur\n     * during an initial out of dialog INVITE request made by our UAC.\n     *\n     *\n     * 2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *\n     * While our implementation adheres to the following bullet point...\n     *\n     * o  If the initial offer is in an INVITE, the answer MUST be in a\n     *    reliable non-failure message from UAS back to UAC which is\n     *    correlated to that INVITE.  For this specification, that is\n     *    only the final 2xx response to that INVITE.  That same exact\n     *    answer MAY also be placed in any provisional responses sent\n     *    prior to the answer.  The UAC MUST treat the first session\n     *    description it receives as the answer, and MUST ignore any\n     *    session descriptions in subsequent responses to the initial\n     *    INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * We have made the following implementation decision with regard to early media...\n     *\n     * o  If the initial offer is in the INVITE, the answer from the\n     *    UAS back to the UAC will establish a media session only\n     *    only after the final 2xx response to that INVITE is received.\n     *\n     * The reason for this decision is rooted in a restriction currently\n     * inherent in WebRTC. Specifically, while a SIP INVITE request with an\n     * initial offer may fork resulting in more than one provisional answer,\n     * there is currently no easy/good way to to \"fork\" an offer generated\n     * by a peer connection. In particular, a WebRTC offer currently may only\n     * be matched with one answer and we have no good way to know which\n     * \"provisional answer\" is going to be the \"final answer\". So we have\n     * decided to punt and not create any \"early media\" sessions in this case.\n     *\n     * The upshot is that if you want \"early media\", you must not put the\n     * initial offer in the INVITE. Instead, force the UAS to provide the\n     * initial offer by sending an INVITE without an offer. In the WebRTC\n     * case this allows us to create a unique peer connection with a unique\n     * answer for every provisional offer with \"early media\" on all of them.\n     *\n     *\n     * 3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * The default behavior may be altered and \"early media\" utilized if the\n     * initial offer is in the an INVITE by setting the `earlyMedia` options.\n     * However in that case the INVITE request MUST NOT fork. This allows for\n     * \"early media\" in environments where the forking behavior of the SIP\n     * servers being utilized is configured to disallow forking.\n     */ invite(options = {}) {\n        this.logger.log(\"Inviter.invite\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial) // re-invite\n        return super.invite(options);\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        if (options.sessionDescriptionHandlerOptions) this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        // just send an INVITE with no sdp...\n        if (options.withoutSdp || this.inviteWithoutSdp) {\n            if (this._renderbody && this._rendertype) this.outgoingRequestMessage.body = {\n                contentType: this._rendertype,\n                body: this._renderbody\n            };\n            // transition state\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing);\n            return Promise.resolve(this.sendInvite(options));\n        }\n        // get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n        };\n        return this.getOffer(offerOptions).then((body)=>{\n            this.outgoingRequestMessage.body = {\n                body: body.content,\n                contentType: body.contentType\n            };\n            // transition state\n            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing);\n            return this.sendInvite(options);\n        }).catch((error)=>{\n            this.logger.log(error.message);\n            // It's possible we are already terminated,\n            // so don't throw trying to transition again.\n            if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n            throw error;\n        });\n    }\n    /**\n     * 13.2.1 Creating the Initial INVITE\n     *\n     * Since the initial INVITE represents a request outside of a dialog,\n     * its construction follows the procedures of Section 8.1.1.  Additional\n     * processing is required for the specific case of INVITE.\n     *\n     * An Allow header field (Section 20.5) SHOULD be present in the INVITE.\n     * It indicates what methods can be invoked within a dialog, on the UA\n     * sending the INVITE, for the duration of the dialog.  For example, a\n     * UA capable of receiving INFO requests within a dialog [34] SHOULD\n     * include an Allow header field listing the INFO method.\n     *\n     * A Supported header field (Section 20.37) SHOULD be present in the\n     * INVITE.  It enumerates all the extensions understood by the UAC.\n     *\n     * An Accept (Section 20.1) header field MAY be present in the INVITE.\n     * It indicates which Content-Types are acceptable to the UA, in both\n     * the response received by it, and in any subsequent requests sent to\n     * it within dialogs established by the INVITE.  The Accept header field\n     * is especially useful for indicating support of various session\n     * description formats.\n     *\n     * The UAC MAY add an Expires header field (Section 20.19) to limit the\n     * validity of the invitation.  If the time indicated in the Expires\n     * header field is reached and no final answer for the INVITE has been\n     * received, the UAC core SHOULD generate a CANCEL request for the\n     * INVITE, as per Section 9.\n     *\n     * A UAC MAY also find it useful to add, among others, Subject (Section\n     * 20.36), Organization (Section 20.25) and User-Agent (Section 20.41)\n     * header fields.  They all contain information related to the INVITE.\n     *\n     * The UAC MAY choose to add a message body to the INVITE.  Section\n     * 8.1.1.10 deals with how to construct the header fields -- Content-\n     * Type among others -- needed to describe the message body.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     */ sendInvite(options = {}) {\n        //    There are special rules for message bodies that contain a session\n        //    description - their corresponding Content-Disposition is \"session\".\n        //    SIP uses an offer/answer model where one UA sends a session\n        //    description, called the offer, which contains a proposed description\n        //    of the session.  The offer indicates the desired communications means\n        //    (audio, video, games), parameters of those means (such as codec\n        //    types) and addresses for receiving media from the answerer.  The\n        //    other UA responds with another session description, called the\n        //    answer, which indicates which communications means are accepted, the\n        //    parameters that apply to those means, and addresses for receiving\n        //    media from the offerer. An offer/answer exchange is within the\n        //    context of a dialog, so that if a SIP INVITE results in multiple\n        //    dialogs, each is a separate offer/answer exchange.  The offer/answer\n        //    model defines restrictions on when offers and answers can be made\n        //    (for example, you cannot make a new offer while one is in progress).\n        //    This results in restrictions on where the offers and answers can\n        //    appear in SIP messages.  In this specification, offers and answers\n        //    can only appear in INVITE requests and responses, and ACK.  The usage\n        //    of offers and answers is further restricted.  For the initial INVITE\n        //    transaction, the rules are:\n        //\n        //       o  The initial offer MUST be in either an INVITE or, if not there,\n        //          in the first reliable non-failure message from the UAS back to\n        //          the UAC.  In this specification, that is the final 2xx\n        //          response.\n        //\n        //       o  If the initial offer is in an INVITE, the answer MUST be in a\n        //          reliable non-failure message from UAS back to UAC which is\n        //          correlated to that INVITE.  For this specification, that is\n        //          only the final 2xx response to that INVITE.  That same exact\n        //          answer MAY also be placed in any provisional responses sent\n        //          prior to the answer.  The UAC MUST treat the first session\n        //          description it receives as the answer, and MUST ignore any\n        //          session descriptions in subsequent responses to the initial\n        //          INVITE.\n        //\n        //       o  If the initial offer is in the first reliable non-failure\n        //          message from the UAS back to UAC, the answer MUST be in the\n        //          acknowledgement for that message (in this specification, ACK\n        //          for a 2xx response).\n        //\n        //       o  After having sent or received an answer to the first offer, the\n        //          UAC MAY generate subsequent offers in requests based on rules\n        //          specified for that method, but only if it has received answers\n        //          to any previous offers, and has not sent any offers to which it\n        //          hasn't gotten an answer.\n        //\n        //       o  Once the UAS has sent or received an answer to the initial\n        //          offer, it MUST NOT generate subsequent offers in any responses\n        //          to the initial INVITE.  This means that a UAS based on this\n        //          specification alone can never generate subsequent offers until\n        //          completion of the initial transaction.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        // 5 The Offer/Answer Model and PRACK\n        //\n        //    RFC 3261 describes guidelines for the sets of messages in which\n        //    offers and answers [3] can appear.  Based on those guidelines, this\n        //    extension provides additional opportunities for offer/answer\n        //    exchanges.\n        //    If the INVITE contained an offer, the UAS MAY generate an answer in a\n        //    reliable provisional response (assuming these are supported by the\n        //    UAC).  That results in the establishment of the session before\n        //    completion of the call.  Similarly, if a reliable provisional\n        //    response is the first reliable message sent back to the UAC, and the\n        //    INVITE did not contain an offer, one MUST appear in that reliable\n        //    provisional response.\n        //    If the UAC receives a reliable provisional response with an offer\n        //    (this would occur if the UAC sent an INVITE without an offer, in\n        //    which case the first reliable provisional response will contain the\n        //    offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        //    a reliable provisional response with an answer, it MAY generate an\n        //    additional offer in the PRACK.  If the UAS receives a PRACK with an\n        //    offer, it MUST place the answer in the 2xx to the PRACK.\n        //    Once an answer has been sent or received, the UA SHOULD establish the\n        //    session based on the parameters of the offer and answer, even if the\n        //    original INVITE itself has not been responded to.\n        //    If the UAS had placed a session description in any reliable\n        //    provisional response that is unacknowledged when the INVITE is\n        //    accepted, the UAS MUST delay sending the 2xx until the provisional\n        //    response is acknowledged.  Otherwise, the reliability of the 1xx\n        //    cannot be guaranteed, and reliability is needed for proper operation\n        //    of the offer/answer exchange.\n        //    All user agents that support this extension MUST support all\n        //    offer/answer exchanges that are possible based on the rules in\n        //    Section 13.2 of RFC 3261, based on the existence of INVITE and PRACK\n        //    as requests, and 2xx and reliable 1xx as non-failure reliable\n        //    responses.\n        //\n        // https://tools.ietf.org/html/rfc3262#section-5\n        ////\n        // The Offer/Answer Model Implementation\n        //\n        // The offer/answer model is straight forward, but one MUST READ the specifications...\n        //\n        // 13.2.1 Creating the Initial INVITE (paragraph 8 in particular)\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        //\n        // 5 The Offer/Answer Model and PRACK\n        // https://tools.ietf.org/html/rfc3262#section-5\n        //\n        // Session Initiation Protocol (SIP) Usage of the Offer/Answer Model\n        // https://tools.ietf.org/html/rfc6337\n        ////\n        ////\n        // TODO: The Offer/Answer Model Implementation\n        //\n        // Currently if `earlyMedia` is enabled and the INVITE request forks,\n        // the session is terminated if the early dialog does not match the\n        // confirmed dialog. This restriction make sense in a WebRTC environment,\n        // but there are other environments where this restriction does not hold.\n        //\n        // So while we currently cannot make the offer in INVITE+forking+webrtc\n        // case work, we propose doing the following...\n        //\n        // OPTION 1\n        // - add a `earlyMediaForking` option and\n        // - require SDH.setDescription() to be callable multiple times.\n        //\n        // OPTION 2\n        // 1) modify SDH Factory to provide an initial offer without giving us the SDH, and then...\n        // 2) stick that offer in the initial INVITE, and when 183 with initial answer is received...\n        // 3) ask SDH Factory if it supports \"earlyRemoteAnswer\"\n        //   a) if true, ask SDH Factory to createSDH(localOffer).then((sdh) => sdh.setDescription(remoteAnswer)\n        //   b) if false, defer getting a SDH until 2xx response is received\n        //\n        // Our supplied WebRTC SDH will default to behavior 3b which works in forking environment (without)\n        // early media if initial offer is in the INVITE). We will, however, provide an \"inviteWillNotFork\"\n        // option which if set to \"true\" will have our supplied WebRTC SDH behave in the 3a manner.\n        // That will result in\n        //  - early media working with initial offer in the INVITE, and...\n        //  - if the INVITE forks, the session terminating with an ERROR that reads like\n        //    \"You set 'inviteWillNotFork' to true but the INVITE forked. You can't eat your cake, and have it too.\"\n        //  - furthermore, we accept that users will report that error to us as \"bug\" regardless\n        //\n        // So, SDH Factory is going to end up with a new interface along the lines of...\n        //\n        // interface SessionDescriptionHandlerFactory {\n        //   makeLocalOffer(): Promise<ContentTypeAndBody>;\n        //   makeSessionDescriptionHandler(\n        //     initialOffer: ContentTypeAndBody, offerType: \"local\" | \"remote\"\n        //   ): Promise<SessionDescriptionHandler>;\n        //   supportsEarlyRemoteAnswer: boolean;\n        //   supportsContentType(contentType: string): boolean;\n        //   getDescription(description: ContentTypeAndBody): Promise<ContentTypeAndBody>\n        //   setDescription(description: ContentTypeAndBody): Promise<void>\n        // }\n        ////\n        // Send the INVITE request.\n        this.outgoingInviteRequest = this.userAgent.userAgentCore.invite(this.outgoingRequestMessage, {\n            onAccept: (inviteResponse)=>{\n                // Our transaction layer is \"non-standard\" in that it will only\n                // pass us a 2xx response once per branch, so there is no need to\n                // worry about dealing with 2xx retransmissions. However, we can\n                // and do still get 2xx responses for multiple branches (when an\n                // INVITE is forked) which may create multiple confirmed dialogs.\n                // Herein we are acking and sending a bye to any confirmed dialogs\n                // which arrive beyond the first one. This is the desired behavior\n                // for most applications (but certainly not all).\n                // If we already received a confirmed dialog, ack & bye this additional confirmed session.\n                if (this.dialog) {\n                    this.logger.log(\"Additional confirmed dialog, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    // We do NOT transition state in this case (this is an \"extra\" dialog)\n                    return;\n                }\n                // If the user requested cancellation, ack & bye this session.\n                if (this.isCanceled) {\n                    this.logger.log(\"Canceled session accepted, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                    return;\n                }\n                this.notifyReferer(inviteResponse);\n                this.onAccept(inviteResponse).then(()=>{\n                    this.disposeEarlyMedia();\n                }).catch(()=>{\n                    this.disposeEarlyMedia();\n                }).then(()=>{\n                    if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(inviteResponse);\n                });\n            },\n            onProgress: (inviteResponse)=>{\n                // If the user requested cancellation, ignore response.\n                if (this.isCanceled) return;\n                this.notifyReferer(inviteResponse);\n                this.onProgress(inviteResponse).catch(()=>{\n                    this.disposeEarlyMedia();\n                }).then(()=>{\n                    if (options.requestDelegate && options.requestDelegate.onProgress) options.requestDelegate.onProgress(inviteResponse);\n                });\n            },\n            onRedirect: (inviteResponse)=>{\n                this.notifyReferer(inviteResponse);\n                this.onRedirect(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onRedirect) options.requestDelegate.onRedirect(inviteResponse);\n            },\n            onReject: (inviteResponse)=>{\n                this.notifyReferer(inviteResponse);\n                this.onReject(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(inviteResponse);\n            },\n            onTrying: (inviteResponse)=>{\n                this.notifyReferer(inviteResponse);\n                this.onTrying(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onTrying) options.requestDelegate.onTrying(inviteResponse);\n            }\n        });\n        return this.outgoingInviteRequest;\n    }\n    disposeEarlyMedia() {\n        this.earlyMediaSessionDescriptionHandlers.forEach((sessionDescriptionHandler)=>{\n            sessionDescriptionHandler.close();\n        });\n        this.earlyMediaSessionDescriptionHandlers.clear();\n    }\n    notifyReferer(response) {\n        if (!this._referred) return;\n        if (!(this._referred instanceof (0, $eae6918d36f972bb$export$1fb4852a55678982))) throw new Error(\"Referred session not instance of session\");\n        if (!this._referred.dialog) return;\n        if (!response.message.statusCode) throw new Error(\"Status code undefined.\");\n        if (!response.message.reasonPhrase) throw new Error(\"Reason phrase undefined.\");\n        const statusCode = response.message.statusCode;\n        const reasonPhrase = response.message.reasonPhrase;\n        const body = `SIP/2.0 ${statusCode} ${reasonPhrase}`.trim();\n        const outgoingNotifyRequest = this._referred.dialog.notify(undefined, {\n            extraHeaders: [\n                \"Event: refer\",\n                \"Subscription-State: terminated\"\n            ],\n            body: {\n                contentDisposition: \"render\",\n                contentType: \"message/sipfrag\",\n                content: body\n            }\n        });\n        // The implicit subscription created by a REFER is the same as a\n        // subscription created with a SUBSCRIBE request.  The agent issuing the\n        // REFER can terminate this subscription prematurely by unsubscribing\n        // using the mechanisms described in [2].  Terminating a subscription,\n        // either by explicitly unsubscribing or rejecting NOTIFY, is not an\n        // indication that the referenced request should be withdrawn or\n        // abandoned.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.4\n        // FIXME: TODO: This should be done in a subscribe dialog to satisfy the above.\n        // If the notify is rejected, stop sending NOTIFY requests.\n        outgoingNotifyRequest.delegate = {\n            onReject: ()=>{\n                this._referred = undefined;\n            }\n        };\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 2xx response.\n     */ onAccept(inviteResponse) {\n        this.logger.log(\"Inviter.onAccept\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`Accept received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported behavior.\n        if (response.hasHeader(\"P-Asserted-Identity\")) this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        // We have a confirmed dialog.\n        session.delegate = {\n            onAck: (ackRequest)=>this.onAckRequest(ackRequest),\n            onBye: (byeRequest)=>this.onByeRequest(byeRequest),\n            onInfo: (infoRequest)=>this.onInfoRequest(infoRequest),\n            onInvite: (inviteRequest)=>this.onInviteRequest(inviteRequest),\n            onMessage: (messageRequest)=>this.onMessageRequest(messageRequest),\n            onNotify: (notifyRequest)=>this.onNotifyRequest(notifyRequest),\n            onPrack: (prackRequest)=>this.onPrackRequest(prackRequest),\n            onRefer: (referRequest)=>this.onReferRequest(referRequest)\n        };\n        this._dialog = session;\n        switch(session.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                // INVITE without offer, so MUST have offer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // INVITE with offer, so MUST have answer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                {\n                    // INVITE without offer, received offer in 2xx, so MUST send answer in ACK.\n                    if (!this._dialog.offer) throw new Error(`Session offer undefined in signaling state ${this._dialog.signalingState}.`);\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setOfferAndGetAnswer(this._dialog.offer, options).then((body)=>{\n                        inviteResponse.ack({\n                            body: body\n                        });\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                    }).catch((error)=>{\n                        this.ackAndBye(inviteResponse, 488, \"Invalid session description\");\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                {\n                    // If INVITE without offer and we have already completed the initial exchange.\n                    if (this.earlyMediaSessionDescriptionHandlers.size > 0) {\n                        const sdh = this.earlyMediaSessionDescriptionHandlers.get(session.id);\n                        if (!sdh) throw new Error(\"Session description handler undefined.\");\n                        this.setSessionDescriptionHandler(sdh);\n                        this.earlyMediaSessionDescriptionHandlers.delete(session.id);\n                        inviteResponse.ack();\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                        return Promise.resolve();\n                    }\n                    // If INVITE with offer and we used an \"early\" answer in a provisional response for media\n                    if (this.earlyMediaDialog) {\n                        // If early media dialog doesn't match confirmed dialog, we must unfortunately fail.\n                        // This limitation stems from how WebRTC currently implements its offer/answer model.\n                        // There are details elsewhere, but in short a WebRTC offer cannot be forked.\n                        if (this.earlyMediaDialog !== session) {\n                            if (this.earlyMedia) {\n                                const message = \"You have set the 'earlyMedia' option to 'true' which requires that your INVITE requests do not fork and yet this INVITE request did in fact fork. Consequentially and not surprisingly the end point which accepted the INVITE (confirmed dialog) does not match the end point with which early media has been setup (early dialog) and thus this session is unable to proceed. In accordance with the SIP specifications, the SIP servers your end point is connected to determine if an INVITE forks and the forking behavior of those servers cannot be controlled by this library. If you wish to use early media with this library you must configure those servers accordingly. Alternatively you may set the 'earlyMedia' to 'false' which will allow this library to function with any INVITE requests which do fork.\";\n                                this.logger.error(message);\n                            }\n                            const error = new Error(\"Early media dialog does not equal confirmed dialog, terminating session\");\n                            this.logger.error(error.message);\n                            this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                            this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                            return Promise.reject(error);\n                        }\n                        // Otherwise we are good to go.\n                        inviteResponse.ack();\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                        return Promise.resolve();\n                    }\n                    // If INVITE with offer and we have been waiting till now to apply the answer.\n                    const answer = session.answer;\n                    if (!answer) throw new Error(\"Answer is undefined.\");\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setAnswer(answer, options).then(()=>{\n                        // This session has completed an initial offer/answer exchange...\n                        let ackOptions;\n                        if (this._renderbody && this._rendertype) ackOptions = {\n                            body: {\n                                contentDisposition: \"render\",\n                                contentType: this._rendertype,\n                                content: this._renderbody\n                            }\n                        };\n                        inviteResponse.ack(ackOptions);\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established);\n                    }).catch((error)=>{\n                        this.logger.error(error.message);\n                        this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle provisional response to initial INVITE.\n     * @param inviteResponse - 1xx response.\n     */ onProgress(inviteResponse) {\n        var _a;\n        this.logger.log(\"Inviter.onProgress\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`Progress received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        if (!this.outgoingInviteRequest) throw new Error(\"Outgoing INVITE request undefined.\");\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported - Set assertedIdentity.\n        if (response.hasHeader(\"P-Asserted-Identity\")) this._assertedIdentity = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        // If a provisional response is received for an initial request, and\n        // that response contains a Require header field containing the option\n        // tag 100rel, the response is to be sent reliably.  If the response is\n        // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n        // ignored, and the procedures below MUST NOT be used.\n        // https://tools.ietf.org/html/rfc3262#section-4\n        const requireHeader = response.getHeader(\"require\");\n        const rseqHeader = response.getHeader(\"rseq\");\n        const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n        const responseReliable = !!rseq;\n        const extraHeaders = [];\n        if (responseReliable) extraHeaders.push(\"RAck: \" + response.getHeader(\"rseq\") + \" \" + response.getHeader(\"cseq\"));\n        switch(session.signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n                // INVITE without offer and session still has no offer (and no answer).\n                if (responseReliable) {\n                    // Similarly, if a reliable provisional\n                    // response is the first reliable message sent back to the UAC, and the\n                    // INVITE did not contain an offer, one MUST appear in that reliable\n                    // provisional response.\n                    // https://tools.ietf.org/html/rfc3262#section-5\n                    this.logger.warn(\"First reliable provisional response received MUST contain an offer when INVITE does not contain an offer.\");\n                    // FIXME: Known popular UA's currently end up here...\n                    inviteResponse.prack({\n                        extraHeaders: extraHeaders\n                    });\n                }\n                return Promise.resolve();\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                // INVITE with offer and session only has that initial local offer.\n                if (responseReliable) inviteResponse.prack({\n                    extraHeaders: extraHeaders\n                });\n                return Promise.resolve();\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                if (!responseReliable) {\n                    // The initial offer MUST be in either an INVITE or, if not there,\n                    // in the first reliable non-failure message from the UAS back to\n                    // the UAC.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // According to Section 13.2.1 of [RFC3261], 'The first reliable\n                    // non-failure message' must have an offer if there is no offer in the\n                    // INVITE request.  This means that the User Agent (UA) that receives\n                    // the INVITE request without an offer must include an offer in the\n                    // first reliable response with 100rel extension.  If no reliable\n                    // provisional response has been sent, the User Agent Server (UAS) must\n                    // include an offer when sending 2xx response.\n                    // https://tools.ietf.org/html/rfc6337#section-2.2\n                    this.logger.warn(\"Non-reliable provisional response MUST NOT contain an initial offer, discarding response.\");\n                    return Promise.resolve();\n                }\n                {\n                    // If the initial offer is in the first reliable non-failure\n                    // message from the UAS back to UAC, the answer MUST be in the\n                    // acknowledgement for that message\n                    const sdh = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions || {});\n                    if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) this.delegate.onSessionDescriptionHandler(sdh, true);\n                    this.earlyMediaSessionDescriptionHandlers.set(session.id, sdh);\n                    return sdh.setDescription(response.body, this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers).then(()=>sdh.getDescription(this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers)).then((description)=>{\n                        const body = {\n                            contentDisposition: \"session\",\n                            contentType: description.contentType,\n                            content: description.body\n                        };\n                        inviteResponse.prack({\n                            extraHeaders: extraHeaders,\n                            body: body\n                        });\n                    }).catch((error)=>{\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                // This session has completed an initial offer/answer exchange, so...\n                // - INVITE with SDP and this provisional response MAY be reliable\n                // - INVITE without SDP and this provisional response MAY be reliable\n                if (responseReliable) inviteResponse.prack({\n                    extraHeaders: extraHeaders\n                });\n                if (this.earlyMedia && !this.earlyMediaDialog) {\n                    this.earlyMediaDialog = session;\n                    const answer = session.answer;\n                    if (!answer) throw new Error(\"Answer is undefined.\");\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setAnswer(answer, options).catch((error)=>{\n                        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n                        throw error;\n                    });\n                }\n                return Promise.resolve();\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 3xx response.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onRedirect(inviteResponse) {\n        this.logger.log(\"Inviter.onRedirect\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating) {\n            this.logger.error(`Redirect received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 4xx, 5xx, or 6xx response.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onReject(inviteResponse) {\n        this.logger.log(\"Inviter.onReject\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing && this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating) {\n            this.logger.error(`Reject received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition((0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 100 response.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onTrying(inviteResponse) {\n        this.logger.log(\"Inviter.onTrying\");\n        // validate state\n        if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing) {\n            this.logger.error(`Trying received while in state ${this.state}, dropping response`);\n            return;\n        }\n    }\n}\n\n\n\n\nclass $1a5a7fa3a929ac56$export$9631269509c3d1fb {\n    /**\n     * Constructs a new instance of the `Messager` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param content - Content for the body of the message.\n     * @param contentType - Content type of the body of the message.\n     * @param options - Options bucket. See {@link MessagerOptions} for details.\n     */ constructor(userAgent, targetURI, content, contentType = \"text/plain\", options = {}){\n        // Logger\n        this.logger = userAgent.getLogger(\"sip.Messager\");\n        // Default options params\n        options.params = options.params || {};\n        // URIs\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (options.params.fromUri) fromURI = typeof options.params.fromUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(options.params.fromUri) : options.params.fromUri;\n        if (!fromURI) throw new TypeError(\"Invalid from URI: \" + options.params.fromUri);\n        let toURI = targetURI;\n        if (options.params.toUri) toURI = typeof options.params.toUri === \"string\" ? (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(options.params.toUri) : options.params.toUri;\n        if (!toURI) throw new TypeError(\"Invalid to URI: \" + options.params.toUri);\n        // Message params\n        const params = options.params ? Object.assign({}, options.params) : {};\n        // Extra headers\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Body\n        const contentDisposition = \"render\";\n        const body = {\n            contentDisposition: contentDisposition,\n            contentType: contentType,\n            content: content\n        };\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // User agent\n        this.userAgent = userAgent;\n    }\n    /**\n     * Send the message.\n     */ message(options = {}) {\n        this.userAgent.userAgentCore.request(this.request, options.requestDelegate);\n        return Promise.resolve();\n    }\n}\n\n\n\n\n\n\n\n/**\n * {@link Registerer} state.\n * @remarks\n * The {@link Registerer} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   __________________________________________\n *                  |  __________________________              |\n * Registerer       | |                          v             v\n * Constructed -> Initial -> Registered -> Unregistered -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */ var $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd;\n(function(RegistererState) {\n    RegistererState[\"Initial\"] = \"Initial\";\n    RegistererState[\"Registered\"] = \"Registered\";\n    RegistererState[\"Unregistered\"] = \"Unregistered\";\n    RegistererState[\"Terminated\"] = \"Terminated\";\n})($d50b58dd3f4a0f9c$export$7789a6c56b4e5efd = $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd || ($d50b58dd3f4a0f9c$export$7789a6c56b4e5efd = {}));\n\n\nclass $1c17056ca0658eec$export$ed326b71f90510a1 {\n    /**\n     * Constructs a new instance of the `Registerer` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param options - Options bucket. See {@link RegistererOptions} for details.\n     */ constructor(userAgent, options = {}){\n        this.disposed = false;\n        /** The contacts returned from the most recent accepted REGISTER request. */ this._contacts = [];\n        /** The number of seconds to wait before retrying to register. */ this._retryAfter = undefined;\n        /** The registration state. */ this._state = (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Initial;\n        /** True is waiting for final response to outstanding REGISTER request. */ this._waiting = false;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // waiting emitter\n        this._waitingEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // Set user agent\n        this.userAgent = userAgent;\n        // Default registrar is domain portion of user agent uri\n        const defaultUserAgentRegistrar = userAgent.configuration.uri.clone();\n        defaultUserAgentRegistrar.user = undefined;\n        // Initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign({}, $1c17056ca0658eec$export$ed326b71f90510a1.defaultOptions()), {\n            registrar: defaultUserAgentRegistrar\n        }), $1c17056ca0658eec$export$ed326b71f90510a1.stripUndefinedProperties(options));\n        // Make sure we are not using references to array options\n        this.options.extraContactHeaderParams = (this.options.extraContactHeaderParams || []).slice();\n        this.options.extraHeaders = (this.options.extraHeaders || []).slice();\n        // Make sure we are not using references to registrar uri\n        if (!this.options.registrar) throw new Error(\"Registrar undefined.\");\n        this.options.registrar = this.options.registrar.clone();\n        // Set instanceId and regId conditional defaults and validate\n        if (this.options.regId && !this.options.instanceId) this.options.instanceId = this.userAgent.instanceId;\n        else if (!this.options.regId && this.options.instanceId) this.options.regId = 1;\n        if (this.options.instanceId && (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(this.options.instanceId, \"uuid\") === -1) throw new Error(\"Invalid instanceId.\");\n        if (this.options.regId && this.options.regId < 0) throw new Error(\"Invalid regId.\");\n        const registrar = this.options.registrar;\n        const fromURI = this.options.params && this.options.params.fromUri || userAgent.userAgentCore.configuration.aor;\n        const toURI = this.options.params && this.options.params.toUri || userAgent.configuration.uri;\n        const params = this.options.params || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER, registrar, fromURI, toURI, params, extraHeaders, undefined);\n        // Registration expires\n        this.expires = this.options.expires || $1c17056ca0658eec$export$ed326b71f90510a1.defaultExpires;\n        if (this.expires < 0) throw new Error(\"Invalid expires.\");\n        // Interval at which re-REGISTER requests are sent\n        this.refreshFrequency = this.options.refreshFrequency || $1c17056ca0658eec$export$ed326b71f90510a1.defaultRefreshFrequency;\n        if (this.refreshFrequency < 50 || this.refreshFrequency > 99) throw new Error(\"Invalid refresh frequency. The value represents a percentage of the expiration time and should be between 50 and 99.\");\n        // initialize logger\n        this.logger = userAgent.getLogger(\"sip.Registerer\");\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key)=>{\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch(key){\n                    case \"registrar\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + value);\n                        break;\n                    default:\n                        this.logger.log(\"\\xb7 \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // Identifier\n        this.id = this.request.callId + this.request.from.parameters.tag;\n        // Add to the user agent's session collection.\n        this.userAgent._registerers[this.id] = this;\n    }\n    /** Default registerer options. */ static defaultOptions() {\n        return {\n            expires: $1c17056ca0658eec$export$ed326b71f90510a1.defaultExpires,\n            extraContactHeaderParams: [],\n            extraHeaders: [],\n            logConfiguration: true,\n            instanceId: \"\",\n            params: {},\n            regId: 0,\n            registrar: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            refreshFrequency: $1c17056ca0658eec$export$ed326b71f90510a1.defaultRefreshFrequency\n        };\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */ static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key)=>{\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            object[key] = options[key];\n            return object;\n        }, {});\n    }\n    /** The registered contacts. */ get contacts() {\n        return this._contacts.slice();\n    }\n    /**\n     * The number of seconds to wait before retrying to register.\n     * @defaultValue `undefined`\n     * @remarks\n     * When the server rejects a registration request, if it provides a suggested\n     * duration to wait before retrying, that value is available here when and if\n     * the state transitions to `Unsubscribed`. It is also available during the\n     * callback to `onReject` after a call to `register`. (Note that if the state\n     * if already `Unsubscribed`, a rejected request created by `register` will\n     * not cause the state to transition to `Unsubscribed`. One way to avoid this\n     * case is to dispose of `Registerer` when unregistered and create a new\n     * `Registerer` for any attempts to retry registering.)\n     * @example\n     * ```ts\n     * // Checking for retry after on state change\n     * registerer.stateChange.addListener((newState) => {\n     *   switch (newState) {\n     *     case RegistererState.Unregistered:\n     *       const retryAfter = registerer.retryAfter;\n     *       break;\n     *   }\n     * });\n     *\n     * // Checking for retry after on request rejection\n     * registerer.register({\n     *   requestDelegate: {\n     *     onReject: () => {\n     *       const retryAfter = registerer.retryAfter;\n     *     }\n     *   }\n     * });\n     * ```\n     */ get retryAfter() {\n        return this._retryAfter;\n    }\n    /** The registration state. */ get state() {\n        return this._state;\n    }\n    /** Emits when the registerer state changes. */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /** Destructor. */ dispose() {\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        this.logger.log(`Registerer ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's registerer collection\n        delete this.userAgent._registerers[this.id];\n        // If registered, unregisters and resolves after final response received.\n        return new Promise((resolve)=>{\n            const doClose = ()=>{\n                // If we are registered, unregister and resolve after our state changes\n                if (!this.waiting && this._state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered) {\n                    this.stateChange.addListener(()=>{\n                        this.terminated();\n                        resolve();\n                    }, {\n                        once: true\n                    });\n                    this.unregister();\n                    return;\n                }\n                // Otherwise just resolve\n                this.terminated();\n                resolve();\n            };\n            // If we are waiting for an outstanding request, wait for it to finish and then try closing.\n            // Otherwise just try closing.\n            if (this.waiting) this.waitingChange.addListener(()=>{\n                doClose();\n            }, {\n                once: true\n            });\n            else doClose();\n        });\n    }\n    /**\n     * Sends the REGISTER request.\n     * @remarks\n     * If successful, sends re-REGISTER requests prior to registration expiration until `unsubscribe()` is called.\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */ register(options = {}) {\n        if (this.state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            this.stateError();\n            throw new Error(\"Registerer disposed. Unable to register.\");\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new (0, $92ef9568286e94e7$export$83a8f2b4495394c4)(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        // Options\n        if (options.requestOptions) this.options = Object.assign(Object.assign({}, this.options), options.requestOptions);\n        // Extra headers\n        const extraHeaders = (this.options.extraHeaders || []).slice();\n        extraHeaders.push(\"Contact: \" + this.generateContactHeader(this.expires));\n        // this is UA.C.ALLOWED_METHODS, removed to get around circular dependency\n        extraHeaders.push(\"Allow: \" + [\n            \"ACK\",\n            \"CANCEL\",\n            \"INVITE\",\n            \"MESSAGE\",\n            \"BYE\",\n            \"OPTIONS\",\n            \"INFO\",\n            \"NOTIFY\",\n            \"REFER\"\n        ].toString());\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        this.request.extraHeaders = extraHeaders;\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response)=>{\n                let expires;\n                // FIXME: This does NOT appear to be to spec and should be removed.\n                // I haven't found anywhere that an Expires header may be used in a response.\n                if (response.message.hasHeader(\"expires\")) expires = Number(response.message.getHeader(\"expires\"));\n                // 8. The registrar returns a 200 (OK) response.  The response MUST\n                // contain Contact header field values enumerating all current\n                // bindings.  Each Contact value MUST feature an \"expires\"\n                // parameter indicating its expiration interval chosen by the\n                // registrar.  The response SHOULD include a Date header field.\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                this._contacts = response.message.getHeaders(\"contact\");\n                let contacts = this._contacts.length;\n                if (!contacts) {\n                    this.logger.error(\"No Contact header in response to REGISTER, dropping response.\");\n                    this.unregistered();\n                    return;\n                }\n                // The 200 (OK) response from the registrar contains a list of Contact\n                // fields enumerating all current bindings.  The UA compares each\n                // contact address to see if it created the contact address, using\n                // comparison rules in Section 19.1.4.  If so, it updates the expiration\n                // time interval according to the expires parameter or, if absent, the\n                // Expires field value.  The UA then issues a REGISTER request for each\n                // of its bindings before the expiration interval has elapsed.\n                // https://tools.ietf.org/html/rfc3261#section-10.2.4\n                let contact;\n                while(contacts--){\n                    contact = response.message.parseHeader(\"contact\", contacts);\n                    if (!contact) throw new Error(\"Contact undefined\");\n                    if (this.userAgent.contact.pubGruu && (0, $dbdae61072997c03$export$2cee8b57bfbd7333)(contact.uri, this.userAgent.contact.pubGruu)) {\n                        expires = Number(contact.getParam(\"expires\"));\n                        break;\n                    }\n                    // If we are using a randomly generated user name (which is the default behavior)\n                    if (this.userAgent.configuration.contactName === \"\") // compare the user portion of the URI under the assumption that it will be unique\n                    {\n                        if (contact.uri.user === this.userAgent.contact.uri.user) {\n                            expires = Number(contact.getParam(\"expires\"));\n                            break;\n                        }\n                    } else // otherwise use comparision rules in Section 19.1.4\n                    if ((0, $dbdae61072997c03$export$2cee8b57bfbd7333)(contact.uri, this.userAgent.contact.uri)) {\n                        expires = Number(contact.getParam(\"expires\"));\n                        break;\n                    }\n                    contact = undefined;\n                }\n                // There must be a matching contact.\n                if (contact === undefined) {\n                    this.logger.error(\"No Contact header pointing to us, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // The contact must have an expires.\n                if (expires === undefined) {\n                    this.logger.error(\"Contact pointing to us is missing expires parameter, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // Save gruu values\n                if (contact.hasParam(\"temp-gruu\")) {\n                    const gruu = contact.getParam(\"temp-gruu\");\n                    if (gruu) this.userAgent.contact.tempGruu = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(gruu.replace(/\"/g, \"\"));\n                }\n                if (contact.hasParam(\"pub-gruu\")) {\n                    const gruu = contact.getParam(\"pub-gruu\");\n                    if (gruu) this.userAgent.contact.pubGruu = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(gruu.replace(/\"/g, \"\"));\n                }\n                this.registered(expires);\n                if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                this.waitingToggle(false);\n            },\n            onProgress: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onProgress) options.requestDelegate.onProgress(response);\n            },\n            onRedirect: (response)=>{\n                this.logger.error(\"Redirect received. Not supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) options.requestDelegate.onRedirect(response);\n                this.waitingToggle(false);\n            },\n            onReject: (response)=>{\n                if (response.message.statusCode === 423) {\n                    // If a UA receives a 423 (Interval Too Brief) response, it MAY retry\n                    // the registration after making the expiration interval of all contact\n                    // addresses in the REGISTER request equal to or greater than the\n                    // expiration interval within the Min-Expires header field of the 423\n                    // (Interval Too Brief) response.\n                    // https://tools.ietf.org/html/rfc3261#section-10.2.8\n                    //\n                    // The registrar MAY choose an expiration less than the requested\n                    // expiration interval.  If and only if the requested expiration\n                    // interval is greater than zero AND smaller than one hour AND\n                    // less than a registrar-configured minimum, the registrar MAY\n                    // reject the registration with a response of 423 (Interval Too\n                    // Brief).  This response MUST contain a Min-Expires header field\n                    // that states the minimum expiration interval the registrar is\n                    // willing to honor.  It then skips the remaining steps.\n                    // https://tools.ietf.org/html/rfc3261#section-10.3\n                    if (!response.message.hasHeader(\"min-expires\")) {\n                        // This response MUST contain a Min-Expires header field\n                        this.logger.error(\"423 response received for REGISTER without Min-Expires, dropping response\");\n                        this.unregistered();\n                        this.waitingToggle(false);\n                        return;\n                    }\n                    // Increase our registration interval to the suggested minimum\n                    this.expires = Number(response.message.getHeader(\"min-expires\"));\n                    // Attempt the registration again immediately\n                    this.waitingToggle(false);\n                    this.register();\n                    return;\n                }\n                this.logger.warn(`Failed to register, status code ${response.message.statusCode}`);\n                // The Retry-After header field can be used with a 500 (Server Internal\n                // Error) or 503 (Service Unavailable) response to indicate how long the\n                // service is expected to be unavailable to the requesting client...\n                // https://tools.ietf.org/html/rfc3261#section-20.33\n                let retryAfterDuration = NaN;\n                if (response.message.statusCode === 500 || response.message.statusCode === 503) {\n                    const header = response.message.getHeader(\"retry-after\");\n                    if (header) retryAfterDuration = Number.parseInt(header, undefined);\n                }\n                // Set for the state change (if any) and the delegate callback (if any)\n                this._retryAfter = isNaN(retryAfterDuration) ? undefined : retryAfterDuration;\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                this._retryAfter = undefined;\n                this.waitingToggle(false);\n            },\n            onTrying: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onTrying) options.requestDelegate.onTrying(response);\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Sends the REGISTER request with expires equal to zero.\n     * @remarks\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */ unregister(options = {}) {\n        if (this.state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            if (this.state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered) {\n                // allows unregister while disposing and registered\n                this.stateError();\n                throw new Error(\"Registerer disposed. Unable to register.\");\n            }\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new (0, $92ef9568286e94e7$export$83a8f2b4495394c4)(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered && !options.all) this.logger.warn(\"Not currently registered, but sending an unregister anyway.\");\n        // Extra headers\n        const extraHeaders = (options.requestOptions && options.requestOptions.extraHeaders || []).slice();\n        this.request.extraHeaders = extraHeaders;\n        // Registrations are soft state and expire unless refreshed, but can\n        // also be explicitly removed.  A client can attempt to influence the\n        // expiration interval selected by the registrar as described in Section\n        // 10.2.1.  A UA requests the immediate removal of a binding by\n        // specifying an expiration interval of \"0\" for that contact address in\n        // a REGISTER request.  UAs SHOULD support this mechanism so that\n        // bindings can be removed before their expiration interval has passed.\n        //\n        // The REGISTER-specific Contact header field value of \"*\" applies to\n        // all registrations, but it MUST NOT be used unless the Expires header\n        // field is present with a value of \"0\".\n        // https://tools.ietf.org/html/rfc3261#section-10.2.2\n        if (options.all) {\n            extraHeaders.push(\"Contact: *\");\n            extraHeaders.push(\"Expires: 0\");\n        } else extraHeaders.push(\"Contact: \" + this.generateContactHeader(0));\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        // Pre-emptive clear the registration timer to avoid a race condition where\n        // this timer fires while waiting for a final response to the unsubscribe.\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response)=>{\n                this._contacts = response.message.getHeaders(\"contact\"); // Update contacts\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onAccept) options.requestDelegate.onAccept(response);\n                this.waitingToggle(false);\n            },\n            onProgress: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onProgress) options.requestDelegate.onProgress(response);\n            },\n            onRedirect: (response)=>{\n                this.logger.error(\"Unregister redirected. Not currently supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) options.requestDelegate.onRedirect(response);\n                this.waitingToggle(false);\n            },\n            onReject: (response)=>{\n                this.logger.error(`Unregister rejected with status code ${response.message.statusCode}`);\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) options.requestDelegate.onReject(response);\n                this.waitingToggle(false);\n            },\n            onTrying: (response)=>{\n                if (options.requestDelegate && options.requestDelegate.onTrying) options.requestDelegate.onTrying(response);\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Clear registration timers.\n     */ clearTimers() {\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        if (this.registrationExpiredTimer !== undefined) {\n            clearTimeout(this.registrationExpiredTimer);\n            this.registrationExpiredTimer = undefined;\n        }\n    }\n    /**\n     * Generate Contact Header\n     */ generateContactHeader(expires) {\n        let contact = this.userAgent.contact.toString({\n            register: true\n        });\n        if (this.options.regId && this.options.instanceId) {\n            contact += \";reg-id=\" + this.options.regId;\n            contact += ';+sip.instance=\"<urn:uuid:' + this.options.instanceId + '>\"';\n        }\n        if (this.options.extraContactHeaderParams) this.options.extraContactHeaderParams.forEach((header)=>{\n            contact += \";\" + header;\n        });\n        contact += \";expires=\" + expires;\n        return contact;\n    }\n    /**\n     * Helper function, called when registered.\n     */ registered(expires) {\n        this.clearTimers();\n        // Re-Register before the expiration interval has elapsed.\n        // For that, calculate the delay as a percentage of the expiration time\n        this.registrationTimer = setTimeout(()=>{\n            this.registrationTimer = undefined;\n            this.register();\n        }, this.refreshFrequency / 100 * expires * 1000);\n        // We are unregistered if the registration expires.\n        this.registrationExpiredTimer = setTimeout(()=>{\n            this.logger.warn(\"Registration expired\");\n            this.unregistered();\n        }, expires * 1000);\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered) this.stateTransition((0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered);\n    }\n    /**\n     * Helper function, called when unregistered.\n     */ unregistered() {\n        this.clearTimers();\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered) this.stateTransition((0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered);\n    }\n    /**\n     * Helper function, called when terminated.\n     */ terminated() {\n        this.clearTimers();\n        if (this._state !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) this.stateTransition((0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated);\n    }\n    /**\n     * Transition registration state.\n     */ stateTransition(newState) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch(this._state){\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Initial:\n                if (newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) invalidTransition();\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered:\n                if (newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) invalidTransition();\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered:\n                if (newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered && newState !== (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) invalidTransition();\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Registration transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated) this.dispose();\n    }\n    /** True if the registerer is currently waiting for final response to a REGISTER request. */ get waiting() {\n        return this._waiting;\n    }\n    /** Emits when the registerer waiting state changes. */ get waitingChange() {\n        return this._waitingEventEmitter;\n    }\n    /**\n     * Toggle waiting.\n     */ waitingToggle(waiting) {\n        if (this._waiting === waiting) throw new Error(`Invalid waiting transition from ${this._waiting} to ${waiting}`);\n        this._waiting = waiting;\n        this.logger.log(`Waiting toggled to ${this._waiting}`);\n        this._waitingEventEmitter.emit(this._waiting);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */ waitingWarning() {\n        let message = \"An attempt was made to send a REGISTER request while a prior one was still in progress.\";\n        message += \" RFC 3261 requires UAs MUST NOT send a new registration until they have received a final response\";\n        message += \" from the registrar for the previous one or the previous REGISTER request has timed out.\";\n        message += \" Note that if the transport disconnects, you still must wait for the prior request to time out before\";\n        message += \" sending a new REGISTER request or alternatively dispose of the current Registerer and create a new Registerer.\";\n        this.logger.warn(message);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */ stateError() {\n        const reason = this.state === (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated ? \"is in 'Terminated' state\" : \"has been disposed\";\n        let message = `An attempt was made to send a REGISTER request when the Registerer ${reason}.`;\n        message += \" The Registerer transitions to 'Terminated' when Registerer.dispose() is called.\";\n        message += \" Perhaps you called UserAgent.stop() which dipsoses of all Registerers?\";\n        this.logger.error(message);\n    }\n}\n$1c17056ca0658eec$export$ed326b71f90510a1.defaultExpires = 600;\n$1c17056ca0658eec$export$ed326b71f90510a1.defaultRefreshFrequency = 99;\n\n\n\n\n\n\n\n\n/* eslint-disable */ //\n// Scoped from: https://github.com/cotag/ts-md5\n//\n/*\n\nTypeScript Md5\n==============\n\nBased on work by\n* Joseph Myers: http://www.myersdaily.org/joseph/javascript/md5-text.html\n* André Cruz: https://github.com/satazor/SparkMD5\n* Raymond Hill: https://github.com/gorhill/yamd5.js\n\nEffectively a TypeScrypt re-write of Raymond Hill JS Library\n\nThe MIT License (MIT)\n\nCopyright (C) 2014 Raymond Hill\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in\nall copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\nTHE SOFTWARE.\n\n\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n                    Version 2, December 2004\n\n Copyright (C) 2015 André Cruz <amdfcruz@gmail.com>\n\n Everyone is permitted to copy and distribute verbatim or modified\n copies of this license document, and changing it is allowed as long\n as the name is changed.\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION\n\n  0. You just DO WHAT THE FUCK YOU WANT TO.\n\n\n*/ class $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd {\n    constructor(){\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state = new Int32Array(4);\n        this._buffer = new ArrayBuffer(68);\n        this._buffer8 = new Uint8Array(this._buffer, 0, 68);\n        this._buffer32 = new Uint32Array(this._buffer, 0, 17);\n        this.start();\n    }\n    static hashStr(str, raw = false) {\n        return this.onePassHasher.start().appendStr(str).end(raw);\n    }\n    static hashAsciiStr(str, raw = false) {\n        return this.onePassHasher.start().appendAsciiStr(str).end(raw);\n    }\n    static _hex(x) {\n        const hc = $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexChars;\n        const ho = $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexOut;\n        let n;\n        let offset;\n        let j;\n        let i;\n        for(i = 0; i < 4; i += 1){\n            offset = i * 8;\n            n = x[i];\n            for(j = 0; j < 8; j += 2){\n                ho[offset + 1 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n                ho[offset + 0 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n            }\n        }\n        return ho.join(\"\");\n    }\n    static _md5cycle(x, k) {\n        let a = x[0];\n        let b = x[1];\n        let c = x[2];\n        let d = x[3];\n        // ff()\n        a += (b & c | ~b & d) + k[0] - 680876936 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[1] - 389564586 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[2] + 606105819 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[3] - 1044525330 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[4] - 176418897 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[5] + 1200080426 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[6] - 1473231341 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[7] - 45705983 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[8] + 1770035416 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[9] - 1958414417 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[10] - 42063 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[11] - 1990404162 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[12] + 1804603682 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[13] - 40341101 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[14] - 1502002290 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[15] + 1236535329 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        // gg()\n        a += (b & d | c & ~d) + k[1] - 165796510 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[6] - 1069501632 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[11] + 643717713 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[0] - 373897302 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[5] - 701558691 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[10] + 38016083 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[15] - 660478335 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[4] - 405537848 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[9] + 568446438 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[14] - 1019803690 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[3] - 187363961 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[8] + 1163531501 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[13] - 1444681467 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[2] - 51403784 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[7] + 1735328473 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[12] - 1926607734 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        // hh()\n        a += (b ^ c ^ d) + k[5] - 378558 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[8] - 2022574463 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[11] + 1839030562 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[14] - 35309556 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[1] - 1530992060 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[4] + 1272893353 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[7] - 155497632 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[10] - 1094730640 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[13] + 681279174 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[0] - 358537222 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[3] - 722521979 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[6] + 76029189 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[9] - 640364487 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[12] - 421815835 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[15] + 530742520 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[2] - 995338651 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        // ii()\n        a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        x[0] = a + x[0] | 0;\n        x[1] = b + x[1] | 0;\n        x[2] = c + x[2] | 0;\n        x[3] = d + x[3] | 0;\n    }\n    start() {\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state.set($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.stateIdentity);\n        return this;\n    }\n    // Char to code point to to array conversion:\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt\n    // #Example.3A_Fixing_charCodeAt_to_handle_non-Basic-Multilingual-Plane_characters_if_their_presence_earlier_in_the_string_is_unknown\n    appendStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let code;\n        let i;\n        for(i = 0; i < str.length; i += 1){\n            code = str.charCodeAt(i);\n            if (code < 128) buf8[bufLen++] = code;\n            else if (code < 0x800) {\n                buf8[bufLen++] = (code >>> 6) + 0xC0;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            } else if (code < 0xD800 || code > 0xDBFF) {\n                buf8[bufLen++] = (code >>> 12) + 0xE0;\n                buf8[bufLen++] = code >>> 6 & 0x3F | 0x80;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            } else {\n                code = (code - 0xD800) * 0x400 + (str.charCodeAt(++i) - 0xDC00) + 0x10000;\n                if (code > 0x10FFFF) throw new Error(\"Unicode standard supports code points up to U+10FFFF\");\n                buf8[bufLen++] = (code >>> 18) + 0xF0;\n                buf8[bufLen++] = code >>> 12 & 0x3F | 0x80;\n                buf8[bufLen++] = code >>> 6 & 0x3F | 0x80;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            }\n            if (bufLen >= 64) {\n                this._dataLength += 64;\n                $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n                bufLen -= 64;\n                buf32[0] = buf32[16];\n            }\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendAsciiStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for(;;){\n            i = Math.min(str.length - j, 64 - bufLen);\n            while(i--)buf8[bufLen++] = str.charCodeAt(j++);\n            if (bufLen < 64) break;\n            this._dataLength += 64;\n            $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendByteArray(input) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for(;;){\n            i = Math.min(input.length - j, 64 - bufLen);\n            while(i--)buf8[bufLen++] = input[j++];\n            if (bufLen < 64) break;\n            this._dataLength += 64;\n            $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    getState() {\n        const self = this;\n        const s = self._state;\n        return {\n            buffer: String.fromCharCode.apply(null, self._buffer8),\n            buflen: self._bufferLength,\n            length: self._dataLength,\n            state: [\n                s[0],\n                s[1],\n                s[2],\n                s[3]\n            ]\n        };\n    }\n    setState(state) {\n        const buf = state.buffer;\n        const x = state.state;\n        const s = this._state;\n        let i;\n        this._dataLength = state.length;\n        this._bufferLength = state.buflen;\n        s[0] = x[0];\n        s[1] = x[1];\n        s[2] = x[2];\n        s[3] = x[3];\n        for(i = 0; i < buf.length; i += 1)this._buffer8[i] = buf.charCodeAt(i);\n    }\n    end(raw = false) {\n        const bufLen = this._bufferLength;\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        const i = (bufLen >> 2) + 1;\n        let dataBitsLen;\n        this._dataLength += bufLen;\n        buf8[bufLen] = 0x80;\n        buf8[bufLen + 1] = buf8[bufLen + 2] = buf8[bufLen + 3] = 0;\n        buf32.set($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.buffer32Identity.subarray(i), i);\n        if (bufLen > 55) {\n            $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n            buf32.set($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.buffer32Identity);\n        }\n        // Do the final computation based on the tail and length\n        // Beware that the final length may not fit in 32 bits so we take care of that\n        dataBitsLen = this._dataLength * 8;\n        if (dataBitsLen <= 0xFFFFFFFF) buf32[14] = dataBitsLen;\n        else {\n            const matches = dataBitsLen.toString(16).match(/(.*?)(.{0,8})$/);\n            if (matches === null) return;\n            const lo = parseInt(matches[2], 16);\n            const hi = parseInt(matches[1], 16) || 0;\n            buf32[14] = lo;\n            buf32[15] = hi;\n        }\n        $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._md5cycle(this._state, buf32);\n        return raw ? this._state : $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd._hex(this._state);\n    }\n}\n// Private Static Variables\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.stateIdentity = new Int32Array([\n    1732584193,\n    -271733879,\n    -1732584194,\n    271733878\n]);\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.buffer32Identity = new Int32Array([\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    0\n]);\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexChars = \"0123456789abcdef\";\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hexOut = [];\n// Permanent instance is to use for one-call hashing\n$1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.onePassHasher = new $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd();\nif ($1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd.hashStr(\"hello\") !== \"5d41402abc4b2a76b9719d911017c592\") console.error(\"Md5 self test failed.\");\n\n\n\nfunction $22e94f419ea4370d$var$MD5(s) {\n    return (0, $1bac8f09e94f6d85$export$9f5a3dfc7a9f5dd).hashStr(s);\n}\nclass $22e94f419ea4370d$export$44fd481568a62fe6 {\n    /**\n     * Constructor.\n     * @param loggerFactory - LoggerFactory.\n     * @param username - Username.\n     * @param password - Password.\n     */ constructor(loggerFactory, ha1, username, password){\n        this.logger = loggerFactory.getLogger(\"sipjs.digestauthentication\");\n        this.username = username;\n        this.password = password;\n        this.ha1 = ha1;\n        this.nc = 0;\n        this.ncHex = \"00000000\";\n    }\n    /**\n     * Performs Digest authentication given a SIP request and the challenge\n     * received in a response to that request.\n     * @param request -\n     * @param challenge -\n     * @returns true if credentials were successfully generated, false otherwise.\n     */ // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    authenticate(request, challenge, body) {\n        // Inspect and validate the challenge.\n        this.algorithm = challenge.algorithm;\n        this.realm = challenge.realm;\n        this.nonce = challenge.nonce;\n        this.opaque = challenge.opaque;\n        this.stale = challenge.stale;\n        if (this.algorithm) {\n            if (this.algorithm !== \"MD5\") {\n                this.logger.warn(\"challenge with Digest algorithm different than 'MD5', authentication aborted\");\n                return false;\n            }\n        } else this.algorithm = \"MD5\";\n        if (!this.realm) {\n            this.logger.warn(\"challenge without Digest realm, authentication aborted\");\n            return false;\n        }\n        if (!this.nonce) {\n            this.logger.warn(\"challenge without Digest nonce, authentication aborted\");\n            return false;\n        }\n        // 'qop' can contain a list of values (Array). Let's choose just one.\n        if (challenge.qop) {\n            if (challenge.qop.indexOf(\"auth\") > -1) this.qop = \"auth\";\n            else if (challenge.qop.indexOf(\"auth-int\") > -1) this.qop = \"auth-int\";\n            else {\n                // Otherwise 'qop' is present but does not contain 'auth' or 'auth-int', so abort here.\n                this.logger.warn(\"challenge without Digest qop different than 'auth' or 'auth-int', authentication aborted\");\n                return false;\n            }\n        } else this.qop = undefined;\n        // Fill other attributes.\n        this.method = request.method;\n        this.uri = request.ruri;\n        this.cnonce = (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(12);\n        this.nc += 1;\n        this.updateNcHex();\n        // nc-value = 8LHEX. Max value = 'FFFFFFFF'.\n        if (this.nc === 4294967296) {\n            this.nc = 1;\n            this.ncHex = \"00000001\";\n        }\n        // Calculate the Digest \"response\" value.\n        this.calculateResponse(body);\n        return true;\n    }\n    /**\n     * Return the Proxy-Authorization or WWW-Authorization header value.\n     */ toString() {\n        const authParams = [];\n        if (!this.response) throw new Error(\"response field does not exist, cannot generate Authorization header\");\n        authParams.push(\"algorithm=\" + this.algorithm);\n        authParams.push('username=\"' + this.username + '\"');\n        authParams.push('realm=\"' + this.realm + '\"');\n        authParams.push('nonce=\"' + this.nonce + '\"');\n        authParams.push('uri=\"' + this.uri + '\"');\n        authParams.push('response=\"' + this.response + '\"');\n        if (this.opaque) authParams.push('opaque=\"' + this.opaque + '\"');\n        if (this.qop) {\n            authParams.push(\"qop=\" + this.qop);\n            authParams.push('cnonce=\"' + this.cnonce + '\"');\n            authParams.push(\"nc=\" + this.ncHex);\n        }\n        return \"Digest \" + authParams.join(\", \");\n    }\n    /**\n     * Generate the 'nc' value as required by Digest in this.ncHex by reading this.nc.\n     */ updateNcHex() {\n        const hex = Number(this.nc).toString(16);\n        this.ncHex = \"00000000\".substr(0, 8 - hex.length) + hex;\n    }\n    /**\n     * Generate Digest 'response' value.\n     */ calculateResponse(body) {\n        let ha1, ha2;\n        // HA1 = MD5(A1) = MD5(username:realm:password)\n        ha1 = this.ha1;\n        if (ha1 === \"\" || ha1 === undefined) ha1 = $22e94f419ea4370d$var$MD5(this.username + \":\" + this.realm + \":\" + this.password);\n        if (this.qop === \"auth\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = $22e94f419ea4370d$var$MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)`\n            this.response = $22e94f419ea4370d$var$MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth:\" + ha2);\n        } else if (this.qop === \"auth-int\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI:MD5(entityBody))\n            ha2 = $22e94f419ea4370d$var$MD5(this.method + \":\" + this.uri + \":\" + $22e94f419ea4370d$var$MD5(body ? body : \"\"));\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)\n            this.response = $22e94f419ea4370d$var$MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth-int:\" + ha2);\n        } else if (this.qop === undefined) {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = $22e94f419ea4370d$var$MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:HA2)\n            this.response = $22e94f419ea4370d$var$MD5(ha1 + \":\" + this.nonce + \":\" + ha2);\n        }\n    }\n}\n\n\n\n\n\n\n\nclass $5e1de246245ac2a4$export$efa9a398d6368992 {\n    constructor(logger, category, label){\n        this.logger = logger;\n        this.category = category;\n        this.label = label;\n    }\n    error(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).error, content);\n    }\n    warn(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).warn, content);\n    }\n    log(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log, content);\n    }\n    debug(content) {\n        this.genericLog((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).debug, content);\n    }\n    genericLog(level, content) {\n        this.logger.genericLog(level, this.category, this.label, content);\n    }\n    get level() {\n        return this.logger.level;\n    }\n    set level(newLevel) {\n        this.logger.level = newLevel;\n    }\n}\n\n\nclass $98fe2e5334faa23b$export$e0f5ef03cd95415a {\n    constructor(){\n        this.builtinEnabled = true;\n        this._level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log;\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.loggers = {};\n        this.logger = this.getLogger(\"sip:loggerfactory\");\n    }\n    get level() {\n        return this._level;\n    }\n    set level(newLevel) {\n        if (newLevel >= 0 && newLevel <= 3) this._level = newLevel;\n        else if (newLevel > 3) this._level = 3;\n        else if ((0, $bb2da993b0fb58b9$export$7dc82a261720bb19).hasOwnProperty(newLevel)) this._level = newLevel;\n        else this.logger.error(\"invalid 'level' parameter value: \" + JSON.stringify(newLevel));\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    get connector() {\n        return this._connector;\n    }\n    set connector(value) {\n        if (!value) this._connector = undefined;\n        else if (typeof value === \"function\") this._connector = value;\n        else this.logger.error(\"invalid 'connector' parameter value: \" + JSON.stringify(value));\n    }\n    getLogger(category, label) {\n        if (label && this.level === 3) return new (0, $5e1de246245ac2a4$export$efa9a398d6368992)(this, category, label);\n        else if (this.loggers[category]) return this.loggers[category];\n        else {\n            const logger = new (0, $5e1de246245ac2a4$export$efa9a398d6368992)(this, category);\n            this.loggers[category] = logger;\n            return logger;\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    genericLog(levelToLog, category, label, content) {\n        if (this.level >= levelToLog) {\n            if (this.builtinEnabled) this.print(levelToLog, category, label, content);\n        }\n        if (this.connector) this.connector((0, $bb2da993b0fb58b9$export$7dc82a261720bb19)[levelToLog], category, label, content);\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    print(levelToLog, category, label, content) {\n        if (typeof content === \"string\") {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const prefix = [\n                new Date(),\n                category\n            ];\n            if (label) prefix.push(label);\n            content = prefix.concat(content).join(\" | \");\n        }\n        switch(levelToLog){\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).error:\n                // eslint-disable-next-line no-console\n                console.error(content);\n                break;\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).warn:\n                // eslint-disable-next-line no-console\n                console.warn(content);\n                break;\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log:\n                // eslint-disable-next-line no-console\n                console.log(content);\n                break;\n            case (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).debug:\n                // eslint-disable-next-line no-console\n                console.debug(content);\n                break;\n            default:\n                break;\n        }\n    }\n}\n\n\n/* eslint-disable no-inner-declarations */ /* eslint-disable @typescript-eslint/no-namespace */ \n\n\nvar $fe1227fc15cbdf8c$export$7acfa6ed01010e37;\n(function(Parser) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function getHeader(data, headerStart) {\n        // 'start' position of the header.\n        let start = headerStart;\n        // 'end' position of the header.\n        let end = 0;\n        // 'partial end' position of the header.\n        let partialEnd = 0;\n        // End of message.\n        if (data.substring(start, start + 2).match(/(^\\r\\n)/)) return -2;\n        while(end === 0){\n            // Partial End of Header.\n            partialEnd = data.indexOf(\"\\r\\n\", start);\n            // 'indexOf' returns -1 if the value to be found never occurs.\n            if (partialEnd === -1) return partialEnd;\n            if (!data.substring(partialEnd + 2, partialEnd + 4).match(/(^\\r\\n)/) && data.charAt(partialEnd + 2).match(/(^\\s+)/)) // Not the end of the message. Continue from the next position.\n            start = partialEnd + 2;\n            else end = partialEnd;\n        }\n        return end;\n    }\n    Parser.getHeader = getHeader;\n    function parseHeader(message, // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    data, headerStart, headerEnd) {\n        const hcolonIndex = data.indexOf(\":\", headerStart);\n        const headerName = data.substring(headerStart, hcolonIndex).trim();\n        const headerValue = data.substring(hcolonIndex + 1, headerEnd).trim();\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let parsed;\n        // If header-field is well-known, parse it.\n        switch(headerName.toLowerCase()){\n            case \"via\":\n            case \"v\":\n                message.addHeader(\"via\", headerValue);\n                if (message.getHeaders(\"via\").length === 1) {\n                    parsed = message.parseHeader(\"Via\");\n                    if (parsed) {\n                        message.via = parsed;\n                        message.viaBranch = parsed.branch;\n                    }\n                } else parsed = 0;\n                break;\n            case \"from\":\n            case \"f\":\n                message.setHeader(\"from\", headerValue);\n                parsed = message.parseHeader(\"from\");\n                if (parsed) {\n                    message.from = parsed;\n                    message.fromTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"to\":\n            case \"t\":\n                message.setHeader(\"to\", headerValue);\n                parsed = message.parseHeader(\"to\");\n                if (parsed) {\n                    message.to = parsed;\n                    message.toTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"record-route\":\n                parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(headerValue, \"Record_Route\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header)=>{\n                    message.addHeader(\"record-route\", headerValue.substring(header.position, header.offset));\n                    message.headers[\"Record-Route\"][message.getHeaders(\"record-route\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"call-id\":\n            case \"i\":\n                message.setHeader(\"call-id\", headerValue);\n                parsed = message.parseHeader(\"call-id\");\n                if (parsed) message.callId = headerValue;\n                break;\n            case \"contact\":\n            case \"m\":\n                parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(headerValue, \"Contact\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header)=>{\n                    message.addHeader(\"contact\", headerValue.substring(header.position, header.offset));\n                    message.headers.Contact[message.getHeaders(\"contact\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"content-length\":\n            case \"l\":\n                message.setHeader(\"content-length\", headerValue);\n                parsed = message.parseHeader(\"content-length\");\n                break;\n            case \"content-type\":\n            case \"c\":\n                message.setHeader(\"content-type\", headerValue);\n                parsed = message.parseHeader(\"content-type\");\n                break;\n            case \"cseq\":\n                message.setHeader(\"cseq\", headerValue);\n                parsed = message.parseHeader(\"cseq\");\n                if (parsed) message.cseq = parsed.value;\n                if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) message.method = parsed.method;\n                break;\n            case \"max-forwards\":\n                message.setHeader(\"max-forwards\", headerValue);\n                parsed = message.parseHeader(\"max-forwards\");\n                break;\n            case \"www-authenticate\":\n                message.setHeader(\"www-authenticate\", headerValue);\n                parsed = message.parseHeader(\"www-authenticate\");\n                break;\n            case \"proxy-authenticate\":\n                message.setHeader(\"proxy-authenticate\", headerValue);\n                parsed = message.parseHeader(\"proxy-authenticate\");\n                break;\n            case \"refer-to\":\n            case \"r\":\n                message.setHeader(\"refer-to\", headerValue);\n                parsed = message.parseHeader(\"refer-to\");\n                if (parsed) message.referTo = parsed;\n                break;\n            default:\n                // Do not parse this header.\n                message.addHeader(headerName.toLowerCase(), headerValue);\n                parsed = 0;\n        }\n        if (parsed === undefined) return {\n            error: \"error parsing header '\" + headerName + \"'\"\n        };\n        else return true;\n    }\n    Parser.parseHeader = parseHeader;\n    function parseMessage(data, logger) {\n        let headerStart = 0;\n        let headerEnd = data.indexOf(\"\\r\\n\");\n        if (headerEnd === -1) {\n            logger.warn(\"no CRLF found, not a SIP message, discarded\");\n            return;\n        }\n        // Parse first line. Check if it is a Request or a Reply.\n        const firstLine = data.substring(0, headerEnd);\n        const parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(firstLine, \"Request_Response\");\n        let message;\n        if (parsed === -1) {\n            logger.warn('error parsing first line of SIP message: \"' + firstLine + '\"');\n            return;\n        } else if (!parsed.status_code) {\n            message = new (0, $36a488a350db25b8$export$b03b8011240de09c)();\n            message.method = parsed.method;\n            message.ruri = parsed.uri;\n        } else {\n            message = new (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)();\n            message.statusCode = parsed.status_code;\n            message.reasonPhrase = parsed.reason_phrase;\n        }\n        message.data = data;\n        headerStart = headerEnd + 2;\n        // Loop over every line in data. Detect the end of each header and parse\n        // it or simply add to the headers collection.\n        let bodyStart;\n        // eslint-disable-next-line no-constant-condition\n        while(true){\n            headerEnd = getHeader(data, headerStart);\n            // The SIP message has normally finished.\n            if (headerEnd === -2) {\n                bodyStart = headerStart + 2;\n                break;\n            } else if (headerEnd === -1) {\n                // data.indexOf returned -1 due to a malformed message.\n                logger.error(\"malformed message\");\n                return;\n            }\n            const parsedHeader = parseHeader(message, data, headerStart, headerEnd);\n            if (parsedHeader && parsedHeader !== true) {\n                logger.error(parsedHeader.error);\n                return;\n            }\n            headerStart = headerEnd + 2;\n        }\n        // RFC3261 18.3.\n        // If there are additional bytes in the transport packet\n        // beyond the end of the body, they MUST be discarded.\n        if (message.hasHeader(\"content-length\")) message.body = data.substr(bodyStart, Number(message.getHeader(\"content-length\")));\n        else message.body = data.substring(bodyStart);\n        return message;\n    }\n    Parser.parseMessage = parseMessage;\n})($fe1227fc15cbdf8c$export$7acfa6ed01010e37 = $fe1227fc15cbdf8c$export$7acfa6ed01010e37 || ($fe1227fc15cbdf8c$export$7acfa6ed01010e37 = {}));\n\n\n\n\n\nfunction $fa12ff70cdbe77c4$export$4a2399f09281a6d4(message, options) {\n    const CRLF = \"\\r\\n\";\n    if (options.statusCode < 100 || options.statusCode > 699) throw new TypeError(\"Invalid statusCode: \" + options.statusCode);\n    const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : (0, $9ef5a4825b23ca0b$export$91293bff868a9015)(options.statusCode);\n    // SIP responses are distinguished from requests by having a Status-Line\n    // as their start-line.  A Status-Line consists of the protocol version\n    // followed by a numeric Status-Code and its associated textual phrase,\n    // with each element separated by a single SP character.\n    // https://tools.ietf.org/html/rfc3261#section-7.2\n    let response = \"SIP/2.0 \" + options.statusCode + \" \" + reasonPhrase + CRLF;\n    // One largely non-method-specific guideline for the generation of\n    // responses is that UASs SHOULD NOT issue a provisional response for a\n    // non-INVITE request.  Rather, UASs SHOULD generate a final response to\n    // a non-INVITE request as soon as possible.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    options.statusCode >= 100 && options.statusCode;\n    // When a 100 (Trying) response is generated, any Timestamp header field\n    // present in the request MUST be copied into this 100 (Trying)\n    // response.  If there is a delay in generating the response, the UAS\n    // SHOULD add a delay value into the Timestamp value in the response.\n    // This value MUST contain the difference between the time of sending of\n    // the response and receipt of the request, measured in seconds.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    options.statusCode;\n    // The From field of the response MUST equal the From header field of\n    // the request.  The Call-ID header field of the response MUST equal the\n    // Call-ID header field of the request.  The CSeq header field of the\n    // response MUST equal the CSeq field of the request.  The Via header\n    // field values in the response MUST equal the Via header field values\n    // in the request and MUST maintain the same ordering.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    const fromHeader = \"From: \" + message.getHeader(\"From\") + CRLF;\n    const callIdHeader = \"Call-ID: \" + message.callId + CRLF;\n    const cSeqHeader = \"CSeq: \" + message.cseq + \" \" + message.method + CRLF;\n    const viaHeaders = message.getHeaders(\"via\").reduce((previous, current)=>{\n        return previous + \"Via: \" + current + CRLF;\n    }, \"\");\n    // If a request contained a To tag in the request, the To header field\n    // in the response MUST equal that of the request.  However, if the To\n    // header field in the request did not contain a tag, the URI in the To\n    // header field in the response MUST equal the URI in the To header\n    // field; additionally, the UAS MUST add a tag to the To header field in\n    // the response (with the exception of the 100 (Trying) response, in\n    // which a tag MAY be present).  This serves to identify the UAS that is\n    // responding, possibly resulting in a component of a dialog ID.  The\n    // same tag MUST be used for all responses to that request, both final\n    // and provisional (again excepting the 100 (Trying)).\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    let toHeader = \"To: \" + message.getHeader(\"to\");\n    if (options.statusCode > 100 && !message.parseHeader(\"to\").hasParam(\"tag\")) {\n        let toTag = options.toTag;\n        if (!toTag) // Stateless UAS Behavior...\n        // o  To header tags MUST be generated for responses in a stateless\n        //    manner - in a manner that will generate the same tag for the\n        //    same request consistently.  For information on tag construction\n        //    see Section 19.3.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.7\n        toTag = (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)(); // FIXME: newTag() currently generates random tags\n        toHeader += \";tag=\" + toTag;\n    }\n    toHeader += CRLF;\n    // FIXME: TODO: needs review... moved to InviteUserAgentServer (as it is specific to that)\n    // let recordRouteHeaders = \"\";\n    // if (request.method === C.INVITE && statusCode > 100 && statusCode <= 200) {\n    //   recordRouteHeaders = request.getHeaders(\"record-route\").reduce((previous, current) => {\n    //     return previous + \"Record-Route: \" + current + CRLF;\n    //   }, \"\");\n    // }\n    // FIXME: TODO: needs review...\n    let supportedHeader = \"\";\n    if (options.supported) supportedHeader = \"Supported: \" + options.supported.join(\", \") + CRLF;\n    // FIXME: TODO: needs review...\n    let userAgentHeader = \"\";\n    if (options.userAgent) userAgentHeader = \"User-Agent: \" + options.userAgent + CRLF;\n    let extensionHeaders = \"\";\n    if (options.extraHeaders) extensionHeaders = options.extraHeaders.reduce((previous, current)=>{\n        return previous + current.trim() + CRLF;\n    }, \"\");\n    // The relative order of header fields with different field names is not\n    // significant.  However, it is RECOMMENDED that header fields which are\n    // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n    // Max-Forwards, and Proxy-Authorization, for example) appear towards\n    // the top of the message to facilitate rapid parsing.\n    // https://tools.ietf.org/html/rfc3261#section-7.3.1\n    // response += recordRouteHeaders;\n    response += viaHeaders;\n    response += fromHeader;\n    response += toHeader;\n    response += cSeqHeader;\n    response += callIdHeader;\n    response += supportedHeader;\n    response += userAgentHeader;\n    response += extensionHeaders;\n    if (options.body) {\n        response += \"Content-Type: \" + options.body.contentType + CRLF;\n        response += \"Content-Length: \" + (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(options.body.content) + CRLF + CRLF;\n        response += options.body.content;\n    } else response += \"Content-Length: 0\" + CRLF + CRLF;\n    return {\n        message: response\n    };\n}\n\n\n\n\n\nclass $3b07629061696787$export$8e68de6fb26f2236 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"Unspecified transport error.\");\n    }\n}\n\n\nclass $08399d4a7176186c$export$febc5573c75cefb0 {\n    constructor(_transport, _user, _id, _state, loggerCategory){\n        this._transport = _transport;\n        this._user = _user;\n        this._id = _id;\n        this._state = _state;\n        this.listeners = new Array();\n        this.logger = _user.loggerFactory.getLogger(loggerCategory, _id);\n        this.logger.debug(`Constructing ${this.typeToString()} with id ${this.id}.`);\n    }\n    /**\n     * Destructor.\n     * Once the transaction is in the \"terminated\" state, it is destroyed\n     * immediately and there is no need to call `dispose`. However, if a\n     * transaction needs to be ended prematurely, the transaction user may\n     * do so by calling this method (for example, perhaps the UA is shutting down).\n     * No state transition will occur upon calling this method, all outstanding\n     * transmission timers will be cancelled, and use of the transaction after\n     * calling `dispose` is undefined.\n     */ dispose() {\n        this.logger.debug(`Destroyed ${this.typeToString()} with id ${this.id}.`);\n    }\n    /** Transaction id. */ get id() {\n        return this._id;\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        throw new Error(\"Invalid kind.\");\n    }\n    /** Transaction state. */ get state() {\n        return this._state;\n    }\n    /** Transaction transport. */ get transport() {\n        return this._transport;\n    }\n    /**\n     * Sets up a function that will be called whenever the transaction state changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */ addStateChangeListener(listener, options) {\n        const onceWrapper = ()=>{\n            this.removeStateChangeListener(onceWrapper);\n            listener();\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * This is currently public so tests may spy on it.\n     * @internal\n     */ notifyStateChangeListeners() {\n        this.listeners.slice().forEach((listener)=>listener());\n    }\n    /**\n     * Removes a listener previously registered with addStateListener.\n     * @param listener - Callback function.\n     */ removeStateChangeListener(listener) {\n        this.listeners = this.listeners.filter((l)=>l !== listener);\n    }\n    logTransportError(error, message) {\n        this.logger.error(error.message);\n        this.logger.error(`Transport error occurred in ${this.typeToString()} with id ${this.id}.`);\n        this.logger.error(message);\n    }\n    /**\n     * Pass message to transport for transmission. If transport fails,\n     * the transaction user is notified by callback to onTransportError().\n     * @returns\n     * Rejects with `TransportError` if transport fails.\n     */ send(message) {\n        return this.transport.send(message).catch((error)=>{\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful\n            // make sure we convert it to a TransportError if need be.\n            if (error instanceof (0, $3b07629061696787$export$8e68de6fb26f2236)) {\n                this.onTransportError(error);\n                throw error;\n            }\n            let transportError;\n            if (error && typeof error.message === \"string\") transportError = new (0, $3b07629061696787$export$8e68de6fb26f2236)(error.message);\n            else transportError = new (0, $3b07629061696787$export$8e68de6fb26f2236)();\n            this.onTransportError(transportError);\n            throw transportError;\n        });\n    }\n    setState(state) {\n        this.logger.debug(`State change to \"${state}\" on ${this.typeToString()} with id ${this.id}.`);\n        this._state = state;\n        if (this._user.onStateChange) this._user.onStateChange(state);\n        this.notifyStateChangeListeners();\n    }\n    typeToString() {\n        return \"UnknownType\";\n    }\n}\n\n\nclass $262349653c65a01b$export$b1147c41a9d85cf5 extends (0, $08399d4a7176186c$export$febc5573c75cefb0) {\n    constructor(_request, transport, user, state, loggerCategory){\n        super(transport, user, _request.viaBranch, state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n    }\n    /** The incoming request the transaction handling. */ get request() {\n        return this._request;\n    }\n}\n\n\n/**\n * Transaction state.\n * @public\n */ var $5a6d2cd8ab50afbe$export$52a28250c602ca8a;\n(function(TransactionState) {\n    TransactionState[\"Accepted\"] = \"Accepted\";\n    TransactionState[\"Calling\"] = \"Calling\";\n    TransactionState[\"Completed\"] = \"Completed\";\n    TransactionState[\"Confirmed\"] = \"Confirmed\";\n    TransactionState[\"Proceeding\"] = \"Proceeding\";\n    TransactionState[\"Terminated\"] = \"Terminated\";\n    TransactionState[\"Trying\"] = \"Trying\";\n})($5a6d2cd8ab50afbe$export$52a28250c602ca8a = $5a6d2cd8ab50afbe$export$52a28250c602ca8a || ($5a6d2cd8ab50afbe$export$52a28250c602ca8a = {}));\n\n\nclass $81bc4312505cb83e$export$fdc050a01797e9de extends (0, $262349653c65a01b$export$b1147c41a9d85cf5) {\n    /**\n     * Constructor.\n     * Upon construction, a \"100 Trying\" reply will be immediately sent.\n     * After construction the transaction will be in the \"proceeding\" state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     * @param request - Incoming INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding, \"sip.transaction.ist\");\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        this.stopProgressExtensionTimer();\n        if (this.H) {\n            clearTimeout(this.H);\n            this.H = undefined;\n        }\n        if (this.I) {\n            clearTimeout(this.I);\n            this.I = undefined;\n        }\n        if (this.L) {\n            clearTimeout(this.L);\n            this.L = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"ist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */ receiveRequest(request) {\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // If a request retransmission is received while in the \"Proceeding\" state, the most\n                // recent provisional response that was received from the TU MUST be passed to the\n                // transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n                    if (this.lastProvisionalResponse) this.send(this.lastProvisionalResponse).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n                // While in the \"Accepted\" state, any retransmissions of the INVITE\n                // received will match this transaction state machine and will be\n                // absorbed by the machine without changing its state. These\n                // retransmissions are not passed onto the TU.\n                // https://tools.ietf.org/html/rfc6026#section-7.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) return;\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // Furthermore, while in the \"Completed\" state, if a request retransmission is\n                // received, the server SHOULD pass the response to the transport for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n                    if (!this.lastFinalResponse) throw new Error(\"Last final response undefined.\");\n                    this.send(this.lastFinalResponse).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                    });\n                    return;\n                }\n                // If an ACK is received while the server transaction is in the \"Completed\" state,\n                // the server transaction MUST transition to the \"Confirmed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed:\n                // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n                // triggered from retransmissions of the final response.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE || request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return;\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                // For good measure absorb any additional messages that arrive (should not happen).\n                if (request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE || request.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return;\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${request.method} request while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response.\n     * @param response - Response.\n     */ receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // The TU passes any number of provisional responses to the server\n                // transaction. So long as the server transaction is in the\n                // \"Proceeding\" state, each of these MUST be passed to the transport\n                // layer for transmission. They are not sent reliably by the\n                // transaction layer (they are not retransmitted by it) and do not cause\n                // a change in the state of the server transaction.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.lastProvisionalResponse = response;\n                    // Start the progress extension timer only for a non-100 provisional response.\n                    if (statusCode > 100) this.startProgressExtensionTimer(); // FIXME: remove\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send 1xx response.\");\n                    });\n                    return;\n                }\n                // If, while in the \"Proceeding\" state, the TU passes a 2xx response\n                // to the server transaction, the server transaction MUST pass this\n                // response to the transport layer for transmission. It is not\n                // retransmitted by the server transaction; retransmissions of 2xx\n                // responses are handled by the TU. The server transaction MUST then\n                // transition to the \"Accepted\" state.\n                // https://tools.ietf.org/html/rfc6026#section-8.5\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                // While in the \"Proceeding\" state, if the TU passes a response with\n                // status code from 300 to 699 to the server transaction, the response\n                // MUST be passed to the transport layer for transmission, and the state\n                // machine MUST enter the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send non-2xx final response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n                // While in the \"Accepted\" state, if the TU passes a 2xx response,\n                // the server transaction MUST pass the response to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc6026#section-8.7\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed:\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * Retransmit the last 2xx response. This is a noop if not in the \"accepted\" state.\n     */ retransmitAcceptedResponse() {\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted && this.lastFinalResponse) this.send(this.lastFinalResponse).catch((error)=>{\n            this.logTransportError(error, \"Failed to send 2xx response.\");\n        });\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and MUST remain in the current state.\n     * https://tools.ietf.org/html/rfc6026#section-8.8\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n    }\n    /** For logging. */ typeToString() {\n        return \"INVITE server transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */ stateTransition(newState) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed) invalidStateTransition();\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // On any state transition, stop resending provisional responses\n        this.stopProgressExtensionTimer();\n        // The purpose of the \"Accepted\" state is to absorb retransmissions of an accepted INVITE request.\n        // Any such retransmissions are absorbed entirely within the server transaction.\n        // They are not passed up to the TU since any downstream UAS cores that accepted the request have\n        // taken responsibility for reliability and will already retransmit their 2xx responses if necessary.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.L = setTimeout(()=>this.timerL(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_L);\n        // When the \"Completed\" state is entered, timer H MUST be set to fire in 64*T1 seconds for all transports.\n        // Timer H determines when the server transaction abandons retransmitting the response.\n        // If an ACK is received while the server transaction is in the \"Completed\" state,\n        // the server transaction MUST transition to the \"Confirmed\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) // FIXME: Missing timer G for unreliable transports.\n        this.H = setTimeout(()=>this.timerH(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_H);\n        // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n        // triggered from retransmissions of the final response. When this state is entered, timer I\n        // is set to fire in T4 seconds for unreliable transports, and zero seconds for reliable\n        // transports. Once timer I fires, the server MUST transition to the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Confirmed) // FIXME: This timer is not getting set correctly for unreliable transports.\n        this.I = setTimeout(()=>this.timerI(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_I);\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */ startProgressExtensionTimer() {\n        // Start the progress extension timer only for the first non-100 provisional response.\n        if (this.progressExtensionTimer === undefined) this.progressExtensionTimer = setInterval(()=>{\n            this.logger.debug(`Progress extension timer expired for INVITE server transaction ${this.id}.`);\n            if (!this.lastProvisionalResponse) throw new Error(\"Last provisional response undefined.\");\n            this.send(this.lastProvisionalResponse).catch((error)=>{\n                this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n            });\n        }, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).PROVISIONAL_RESPONSE_INTERVAL);\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer id. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */ stopProgressExtensionTimer() {\n        if (this.progressExtensionTimer !== undefined) {\n            clearInterval(this.progressExtensionTimer);\n            this.progressExtensionTimer = undefined;\n        }\n    }\n    /**\n     * While in the \"Proceeding\" state, if the TU passes a response with status code\n     * from 300 to 699 to the server transaction, the response MUST be passed to the\n     * transport layer for transmission, and the state machine MUST enter the \"Completed\" state.\n     * For unreliable transports, timer G is set to fire in T1 seconds, and is not set to fire for\n     * reliable transports. If timer G fires, the response is passed to the transport layer once\n     * more for retransmission, and timer G is set to fire in MIN(2*T1, T2) seconds. From then on,\n     * when timer G fires, the response is passed to the transport again for transmission, and\n     * timer G is reset with a value that doubles, unless that value exceeds T2, in which case\n     * it is reset with the value of T2.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */ timerG() {\n    // TODO\n    }\n    /**\n     * If timer H fires while in the \"Completed\" state, it implies that the ACK was never received.\n     * In this case, the server transaction MUST transition to the \"Terminated\" state, and MUST\n     * indicate to the TU that a transaction failure has occurred.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */ timerH() {\n        this.logger.debug(`Timer H expired for INVITE server transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n            this.logger.warn(\"ACK to negative final response was never received, terminating transaction.\");\n            this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n        }\n    }\n    /**\n     * Once timer I fires, the server MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */ timerI() {\n        this.logger.debug(`Timer I expired for INVITE server transaction ${this.id}.`);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n    /**\n     * When Timer L fires and the state machine is in the \"Accepted\" state, the machine MUST\n     * transition to the \"Terminated\" state. Once the transaction is in the \"Terminated\" state,\n     * it MUST be destroyed immediately. Timer L reflects the amount of time the server\n     * transaction could receive 2xx responses for retransmission from the\n     * TU while it is waiting to receive an ACK.\n     * https://tools.ietf.org/html/rfc6026#section-7.1\n     * https://tools.ietf.org/html/rfc6026#section-8.7\n     */ timerL() {\n        this.logger.debug(`Timer L expired for INVITE server transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\nclass $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463 extends (0, $08399d4a7176186c$export$febc5573c75cefb0) {\n    constructor(_request, transport, user, state, loggerCategory){\n        super(transport, user, $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463.makeId(_request), state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n        // The Via header field indicates the transport used for the transaction\n        // and identifies the location where the response is to be sent.  A Via\n        // header field value is added only after the transport that will be\n        // used to reach the next hop has been selected (which may involve the\n        // usage of the procedures in [4]).\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n        _request.setViaHeader(this.id, transport.protocol);\n    }\n    static makeId(request) {\n        if (request.method === \"CANCEL\") {\n            if (!request.branch) throw new Error(\"Outgoing CANCEL request without a branch.\");\n            return request.branch;\n        } else return \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n    }\n    /** The outgoing request the transaction handling. */ get request() {\n        return this._request;\n    }\n    /**\n     * A 408 to non-INVITE will always arrive too late to be useful ([3]),\n     * The client already has full knowledge of the timeout. The only\n     * information this message would convey is whether or not the server\n     * believed the transaction timed out. However, with the current design\n     * of the NIT, a client cannot do anything with this knowledge. Thus,\n     * the 408 is simply wasting network resources and contributes to the\n     * response bombardment illustrated in [3].\n     * https://tools.ietf.org/html/rfc4320#section-4.1\n     */ onRequestTimeout() {\n        if (this.user.onRequestTimeout) this.user.onRequestTimeout();\n    }\n}\n\n\n\nclass $de2fac6d73c31956$export$56b95907db972eed extends (0, $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463) {\n    /**\n     * Constructor\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2\n     * @param request - The outgoing Non-INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying, \"sip.transaction.nict\");\n        // FIXME: Timer E for unreliable transports not implemented.\n        //\n        // The \"Trying\" state is entered when the TU initiates a new client\n        // transaction with a request.  When entering this state, the client\n        // transaction SHOULD set timer F to fire in 64*T1 seconds. The request\n        // MUST be passed to the transport layer for transmission.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        this.F = setTimeout(()=>this.timerF(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_F);\n        this.send(request.toString()).catch((error)=>{\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.F) {\n            clearTimeout(this.F);\n            this.F = undefined;\n        }\n        if (this.K) {\n            clearTimeout(this.K);\n            this.K = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"nict\";\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */ receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                // If a provisional response is received while in the \"Trying\" state, the\n                // response MUST be passed to the TU, and then the client transaction\n                // SHOULD move to the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Trying\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // If a provisional response is received while in the \"Proceeding\" state,\n                // the response MUST be passed to the TU. (From Figure 6)\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) return this.user.receiveResponse(response);\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Proceeding\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // The \"Completed\" state exists to buffer any additional response\n                // retransmissions that may be received (which is why the client\n                // transaction remains there only for unreliable transports).\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                return;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                // For good measure just absorb additional response retransmissions.\n                return;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE client transaction received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure has occurred,\n     * and the client transaction SHOULD transition directly to the \"Terminated\" state.\n     * The TU will handle the fail over mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - Transport error\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated, true);\n    }\n    /** For logging. */ typeToString() {\n        return \"non-INVITE client transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */ stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n                    if (!dueToTransportError) invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // Once the client transaction enters the \"Completed\" state, it MUST set\n        // Timer K to fire in T4 seconds for unreliable transports, and zero\n        // seconds for reliable transports  The \"Completed\" state exists to\n        // buffer any additional response retransmissions that may be received\n        // (which is why the client transaction remains there only for unreliable transports).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n            if (this.F) {\n                clearTimeout(this.F);\n                this.F = undefined;\n            }\n            this.K = setTimeout(()=>this.timerK(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_K);\n        }\n        // Once the transaction is in the terminated state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * If Timer F fires while the client transaction is still in the\n     * \"Trying\" state, the client transaction SHOULD inform the TU about the\n     * timeout, and then it SHOULD enter the \"Terminated\" state.\n     * If timer F fires while in the \"Proceeding\" state, the TU MUST be informed of\n     * a timeout, and the client transaction MUST transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */ timerF() {\n        this.logger.debug(`Timer F expired for non-INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) {\n            this.onRequestTimeout();\n            this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n        }\n    }\n    /**\n     * If Timer K fires while in this (COMPLETED) state, the client transaction\n     * MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */ timerK() {\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\n\nclass $a6e6fbcb3e59f89d$export$3ddf2d174ce01153 {\n    /**\n     * Dialog constructor.\n     * @param core - User agent core.\n     * @param dialogState - Initial dialog state.\n     */ constructor(core, dialogState){\n        this.core = core;\n        this.dialogState = dialogState;\n        this.core.dialogs.set(this.id, this);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */ static initialDialogStateForUserAgentClient(outgoingRequestMessage, incomingResponseMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingResponseMessage.getHeaders(\"record-route\").reverse();\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const contact = incomingResponseMessage.parseHeader(\"contact\");\n        if (!contact) // TODO: Review to make sure this will never happen\n        throw new Error(\"Contact undefined.\");\n        if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingRequestMessage.callId;\n        const localTag = outgoingRequestMessage.fromTag;\n        const remoteTag = incomingResponseMessage.toTag;\n        if (!callId) // TODO: Review to make sure this will never happen\n        throw new Error(\"Call id undefined.\");\n        if (!localTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"From tag undefined.\");\n        if (!remoteTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingRequestMessage.from) // TODO: Review to make sure this will never happen\n        throw new Error(\"From undefined.\");\n        if (!outgoingRequestMessage.to) // TODO: Review to make sure this will never happen\n        throw new Error(\"To undefined.\");\n        const localURI = outgoingRequestMessage.from.uri;\n        const remoteURI = outgoingRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        if (!incomingResponseMessage.statusCode) throw new Error(\"Incoming response status code undefined.\");\n        const early = incomingResponseMessage.statusCode < 200 ? true : false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early: early,\n            callId: callId,\n            localTag: localTag,\n            remoteTag: remoteTag,\n            localSequenceNumber: localSequenceNumber,\n            remoteSequenceNumber: remoteSequenceNumber,\n            localURI: localURI,\n            remoteURI: remoteURI,\n            remoteTarget: remoteTarget,\n            routeSet: routeSet,\n            secure: secure\n        };\n        return dialogState;\n    }\n    /**\n     * The UAS then constructs the state of the dialog.  This state MUST be\n     * maintained for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.1\n     * @param incomingRequestMessage - Incoming request message creating dialog.\n     * @param toTag - Tag in the To field in the response to the incoming request.\n     */ static initialDialogStateForUserAgentServer(incomingRequestMessage, toTag, early = false) {\n        // If the request arrived over TLS, and the Request-URI contained a SIPS\n        // URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the request, taken in order and preserving all URI\n        // parameters.  If no Record-Route header field is present in the\n        // request, the route set MUST be set to the empty set.  This route set,\n        // even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const routeSet = incomingRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingRequestMessage.parseHeader(\"contact\");\n        if (!contact) // TODO: Review to make sure this will never happen\n        throw new Error(\"Contact undefined.\");\n        if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n        const remoteTarget = contact.uri;\n        // The remote sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The local sequence\n        // number MUST be empty.  The call identifier component of the dialog ID\n        // MUST be set to the value of the Call-ID in the request.  The local\n        // tag component of the dialog ID MUST be set to the tag in the To field\n        // in the response to the request (which always includes a tag), and the\n        // remote tag component of the dialog ID MUST be set to the tag from the\n        // From field in the request.  A UAS MUST be prepared to receive a\n        // request without a tag in the From field, in which case the tag is\n        // considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate From tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteSequenceNumber = incomingRequestMessage.cseq;\n        const localSequenceNumber = undefined;\n        const callId = incomingRequestMessage.callId;\n        const localTag = toTag;\n        const remoteTag = incomingRequestMessage.fromTag;\n        // The remote URI MUST be set to the URI in the From field, and the\n        // local URI MUST be set to the URI in the To field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteURI = incomingRequestMessage.from.uri;\n        const localURI = incomingRequestMessage.to.uri;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early: early,\n            callId: callId,\n            localTag: localTag,\n            remoteTag: remoteTag,\n            localSequenceNumber: localSequenceNumber,\n            remoteSequenceNumber: remoteSequenceNumber,\n            localURI: localURI,\n            remoteURI: remoteURI,\n            remoteTarget: remoteTarget,\n            routeSet: routeSet,\n            secure: secure\n        };\n        return dialogState;\n    }\n    /** Destructor. */ dispose() {\n        this.core.dialogs.delete(this.id);\n    }\n    /**\n     * A dialog is identified at each UA with a dialog ID, which consists of\n     * a Call-ID value, a local tag and a remote tag.  The dialog ID at each\n     * UA involved in the dialog is not the same.  Specifically, the local\n     * tag at one UA is identical to the remote tag at the peer UA.  The\n     * tags are opaque tokens that facilitate the generation of unique\n     * dialog IDs.\n     * https://tools.ietf.org/html/rfc3261#section-12\n     */ get id() {\n        return this.dialogState.id;\n    }\n    /**\n     * A dialog can also be in the \"early\" state, which occurs when it is\n     * created with a provisional response, and then it transition to the\n     * \"confirmed\" state when a 2xx final response received or is sent.\n     *\n     * Note: RFC 3261 is concise on when a dialog is \"confirmed\", but it\n     * can be a point of confusion if an INVITE dialog is \"confirmed\" after\n     * a 2xx is sent or after receiving the ACK for the 2xx response.\n     * With careful reading it can be inferred a dialog is always is\n     * \"confirmed\" when the 2xx is sent (regardless of type of dialog).\n     * However a INVITE dialog does have additional considerations\n     * when it is confirmed but an ACK has not yet been received (in\n     * particular with regard to a callee sending BYE requests).\n     */ get early() {\n        return this.dialogState.early;\n    }\n    /** Call identifier component of the dialog id. */ get callId() {\n        return this.dialogState.callId;\n    }\n    /** Local tag component of the dialog id. */ get localTag() {\n        return this.dialogState.localTag;\n    }\n    /** Remote tag component of the dialog id. */ get remoteTag() {\n        return this.dialogState.remoteTag;\n    }\n    /** Local sequence number (used to order requests from the UA to its peer). */ get localSequenceNumber() {\n        return this.dialogState.localSequenceNumber;\n    }\n    /** Remote sequence number (used to order requests from its peer to the UA). */ get remoteSequenceNumber() {\n        return this.dialogState.remoteSequenceNumber;\n    }\n    /** Local URI. */ get localURI() {\n        return this.dialogState.localURI;\n    }\n    /** Remote URI. */ get remoteURI() {\n        return this.dialogState.remoteURI;\n    }\n    /** Remote target. */ get remoteTarget() {\n        return this.dialogState.remoteTarget;\n    }\n    /**\n     * Route set, which is an ordered list of URIs. The route set is the\n     * list of servers that need to be traversed to send a request to the peer.\n     */ get routeSet() {\n        return this.dialogState.routeSet;\n    }\n    /**\n     * If the request was sent over TLS, and the Request-URI contained\n     * a SIPS URI, the \"secure\" flag is set to true. *NOT IMPLEMENTED*\n     */ get secure() {\n        return this.dialogState.secure;\n    }\n    /** The user agent core servicing this dialog. */ get userAgentCore() {\n        return this.core;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */ confirm() {\n        this.dialogState.early = false;\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     *\n     *    Note that some requests, such as INVITEs, affect several pieces of\n     *    state.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */ receiveRequest(message) {\n        // ACK guard.\n        // By convention, the handling of ACKs is the responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, ACKs have same sequence number as the associated INVITE.\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return;\n        // If the remote sequence number was not empty, but the sequence number\n        // of the request is lower than the remote sequence number, the request\n        // is out of order and MUST be rejected with a 500 (Server Internal\n        // Error) response.  If the remote sequence number was not empty, and\n        // the sequence number of the request is greater than the remote\n        // sequence number, the request is in order.  It is possible for the\n        // CSeq sequence number to be higher than the remote sequence number by\n        // more than one.  This is not an error condition, and a UAS SHOULD be\n        // prepared to receive and process requests with CSeq values more than\n        // one higher than the previous received request.  The UAS MUST then set\n        // the remote sequence number to the value of the sequence number in the\n        // CSeq header field value in the request.\n        //\n        //    If a proxy challenges a request generated by the UAC, the UAC has\n        //    to resubmit the request with credentials.  The resubmitted request\n        //    will have a new CSeq number.  The UAS will never see the first\n        //    request, and thus, it will notice a gap in the CSeq number space.\n        //    Such a gap does not represent any error condition.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (this.remoteSequenceNumber) {\n            if (message.cseq <= this.remoteSequenceNumber) throw new Error(\"Out of sequence in dialog request. Did you forget to call sequenceGuard()?\");\n            this.dialogState.remoteSequenceNumber = message.cseq;\n        }\n        // If the remote sequence number is empty, it MUST be set to the value\n        // of the sequence number in the CSeq header field value in the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.remoteSequenceNumber) this.dialogState.remoteSequenceNumber = message.cseq;\n    // When a UAS receives a target refresh request, it MUST replace the\n    // dialog's remote target URI with the URI from the Contact header field\n    // in that request, if present.\n    // https://tools.ietf.org/html/rfc3261#section-12.2.2\n    // Note: \"target refresh request\" processing delegated to sub-class.\n    }\n    /**\n     * If the dialog identifier in the 2xx response matches the dialog\n     * identifier of an existing dialog, the dialog MUST be transitioned to\n     * the \"confirmed\" state, and the route set for the dialog MUST be\n     * recomputed based on the 2xx response using the procedures of Section\n     * 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n     * constructed using the procedures of Section 12.1.2.\n     *\n     * Note that the only piece of state that is recomputed is the route\n     * set.  Other pieces of state such as the highest sequence numbers\n     * (remote and local) sent within the dialog are not recomputed.  The\n     * route set only is recomputed for backwards compatibility.  RFC\n     * 2543 did not mandate mirroring of the Record-Route header field in\n     * a 1xx, only 2xx.  However, we cannot update the entire state of\n     * the dialog, since mid-dialog requests may have been sent within\n     * the early dialog, modifying the sequence numbers, for example.\n     *\n     *  https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     */ recomputeRouteSet(message) {\n        this.dialogState.routeSet = message.getHeaders(\"record-route\").reverse();\n    }\n    /**\n     * A request within a dialog is constructed by using many of the\n     * components of the state stored as part of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n     * @param method - Outgoing request method.\n     */ createOutgoingRequestMessage(method, options) {\n        // The URI in the To field of the request MUST be set to the remote URI\n        // from the dialog state.  The tag in the To header field of the request\n        // MUST be set to the remote tag of the dialog ID.  The From URI of the\n        // request MUST be set to the local URI from the dialog state.  The tag\n        // in the From header field of the request MUST be set to the local tag\n        // of the dialog ID.  If the value of the remote or local tags is null,\n        // the tag parameter MUST be omitted from the To or From header fields,\n        // respectively.\n        //\n        //    Usage of the URI from the To and From fields in the original\n        //    request within subsequent requests is done for backwards\n        //    compatibility with RFC 2543, which used the URI for dialog\n        //    identification.  In this specification, only the tags are used for\n        //    dialog identification.  It is expected that mandatory reflection\n        //    of the original To and From URI in mid-dialog requests will be\n        //    deprecated in a subsequent revision of this specification.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const toUri = this.remoteURI;\n        const toTag = this.remoteTag;\n        const fromUri = this.localURI;\n        const fromTag = this.localTag;\n        // The Call-ID of the request MUST be set to the Call-ID of the dialog.\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.  If the local sequence number is\n        // empty, an initial value MUST be chosen using the guidelines of\n        // Section 8.1.1.5.  The method field in the CSeq header field value\n        // MUST match the method of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const callId = this.callId;\n        let cseq;\n        if (options && options.cseq) cseq = options.cseq;\n        else if (!this.dialogState.localSequenceNumber) cseq = this.dialogState.localSequenceNumber = 1; // https://tools.ietf.org/html/rfc3261#section-8.1.1.5\n        else cseq = this.dialogState.localSequenceNumber += 1;\n        // The UAC uses the remote target and route set to build the Request-URI\n        // and Route header field of the request.\n        //\n        // If the route set is empty, the UAC MUST place the remote target URI\n        // into the Request-URI.  The UAC MUST NOT add a Route header field to\n        // the request.\n        //\n        // If the route set is not empty, and the first URI in the route set\n        // contains the lr parameter (see Section 19.1.1), the UAC MUST place\n        // the remote target URI into the Request-URI and MUST include a Route\n        // header field containing the route set values in order, including all\n        // parameters.\n        //\n        // If the route set is not empty, and its first URI does not contain the\n        // lr parameter, the UAC MUST place the first URI from the route set\n        // into the Request-URI, stripping any parameters that are not allowed\n        // in a Request-URI.  The UAC MUST add a Route header field containing\n        // the remainder of the route set values in order, including all\n        // parameters.  The UAC MUST then place the remote target URI into the\n        // Route header field as the last value.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        // The lr parameter, when present, indicates that the element\n        // responsible for this resource implements the routing mechanisms\n        // specified in this document.  This parameter will be used in the\n        // URIs proxies place into Record-Route header field values, and\n        // may appear in the URIs in a pre-existing route set.\n        //\n        // This parameter is used to achieve backwards compatibility with\n        // systems implementing the strict-routing mechanisms of RFC 2543\n        // and the rfc2543bis drafts up to bis-05.  An element preparing\n        // to send a request based on a URI not containing this parameter\n        // can assume the receiving element implements strict-routing and\n        // reformat the message to preserve the information in the\n        // Request-URI.\n        // https://tools.ietf.org/html/rfc3261#section-19.1.1\n        // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n        const ruri = this.remoteTarget;\n        const routeSet = this.routeSet;\n        const extraHeaders = options && options.extraHeaders;\n        const body = options && options.body;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        const message = this.userAgentCore.makeOutgoingRequestMessage(method, ruri, fromUri, toUri, {\n            callId: callId,\n            cseq: cseq,\n            fromTag: fromTag,\n            toTag: toTag,\n            routeSet: routeSet\n        }, extraHeaders, body);\n        return message;\n    }\n    /**\n     * Increment the local sequence number by one.\n     * It feels like this should be protected, but the current authentication handling currently\n     * needs this to keep the dialog in sync when \"auto re-sends\" request messages.\n     * @internal\n     */ incrementLocalSequenceNumber() {\n        if (!this.dialogState.localSequenceNumber) throw new Error(\"Local sequence number undefined.\");\n        this.dialogState.localSequenceNumber += 1;\n    }\n    /**\n     * If the remote sequence number was not empty, but the sequence number\n     * of the request is lower than the remote sequence number, the request\n     * is out of order and MUST be rejected with a 500 (Server Internal\n     * Error) response.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param request - Incoming request to guard.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise a 500 Server Internal Error was stateless sent and request processing must stop.\n     */ sequenceGuard(message) {\n        // ACK guard.\n        // By convention, handling of unexpected ACKs is responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, we cannot reply to an \"out of sequence\" ACK.\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) return true;\n        // Note: We are rejecting on \"less than or equal to\" the remote\n        // sequence number (excepting ACK whose numbers equal the requests\n        // being acknowledged or cancelled), which is the correct thing to\n        // do in our case. The only time a request with the same sequence number\n        // will show up here if is a) it is a very late retransmission of a\n        // request we already handled or b) it is a different request with the\n        // same sequence number which would be violation of the standard.\n        // Request retransmissions are absorbed by the transaction layer,\n        // so any request with a duplicate sequence number getting here\n        // would have to be a retransmission after the transaction terminated\n        // or a broken request (with unique via branch value).\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        if (this.remoteSequenceNumber && message.cseq <= this.remoteSequenceNumber) {\n            this.core.replyStateless(message, {\n                statusCode: 500\n            });\n            return false;\n        }\n        return true;\n    }\n}\n\n\n\n\n\n\n\n\n\n\n\n\n\nclass $0f79ac00a17f1010$export$815a7ced3416e5c7 extends (0, $461f8ee5efb3ceb5$export$ea7e5a53b8d4e463) {\n    /**\n     * Constructor.\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1\n     * @param request - The outgoing INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling, \"sip.transaction.ict\");\n        /**\n         * Map of 2xx to-tag to ACK.\n         * If value is not undefined, value is the ACK which was sent.\n         * If key exists but value is undefined, a 2xx was received but the ACK not yet sent.\n         * Otherwise, a 2xx was not (yet) received for this transaction.\n         */ this.ackRetransmissionCache = new Map();\n        // FIXME: Timer A for unreliable transport not implemented\n        //\n        // If an unreliable transport is being used, the client transaction\n        // MUST start timer A with a value of T1. If a reliable transport is being used,\n        // the client transaction SHOULD NOT start timer A (Timer A controls request retransmissions).\n        // For any transport, the client transaction MUST start timer B with a value\n        // of 64*T1 seconds (Timer B controls transaction timeouts).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n        //\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        this.B = setTimeout(()=>this.timerB(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_B);\n        this.send(request.toString()).catch((error)=>{\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        if (this.D) {\n            clearTimeout(this.D);\n            this.D = undefined;\n        }\n        if (this.M) {\n            clearTimeout(this.M);\n            this.M = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"ict\";\n    }\n    /**\n     * ACK a 2xx final response.\n     *\n     * The transaction includes the ACK only if the final response was not a 2xx response (the\n     * transaction will generate and send the ACK to the transport automagically). If the\n     * final response was a 2xx, the ACK is not considered part of the transaction (the\n     * transaction user needs to generate and send the ACK).\n     *\n     * This library is not strictly RFC compliant with regard to ACK handling for 2xx final\n     * responses. Specifically, retransmissions of ACKs to a 2xx final responses is handled\n     * by the transaction layer (instead of the UAC core). The \"standard\" approach is for\n     * the UAC core to receive all 2xx responses and manage sending ACK retransmissions to\n     * the transport directly. Herein the transaction layer manages sending ACKs to 2xx responses\n     * and any retransmissions of those ACKs as needed.\n     *\n     * @param ack - The outgoing ACK request.\n     */ ackResponse(ack) {\n        const toTag = ack.toTag;\n        if (!toTag) throw new Error(\"To tag undefined.\");\n        const id = \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n        ack.setViaHeader(id, this.transport.protocol);\n        this.ackRetransmissionCache.set(toTag, ack); // Add to ACK retransmission cache\n        this.send(ack.toString()).catch((error)=>{\n            this.logTransportError(error, \"Failed to send ACK to 2xx response.\");\n        });\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */ receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling:\n                // If the client transaction receives a provisional response while in\n                // the \"Calling\" state, it transitions to the \"Proceeding\" state. In the\n                // \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or\n                // \"Proceeding\" states, the client transaction MUST transition to\n                // the \"Accepted\" state... The 2xx response MUST be passed up to the TU.\n                // The client transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // In the \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or \"Proceeding\" states,\n                // the client transaction MUST transition to the \"Accepted\" state...\n                // The 2xx response MUST be passed up to the TU. The client\n                // transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) this.user.receiveResponse(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n                // The purpose of the \"Accepted\" state is to allow the client\n                // transaction to continue to exist to receive, and pass to the TU,\n                // any retransmissions of the 2xx response and any additional 2xx\n                // responses from other branches of the INVITE if it forked\n                // downstream. Timer M reflects the amount of time that the\n                // transaction user will wait for such messages.\n                //\n                // Any 2xx responses that match this client transaction and that are\n                // received while in the \"Accepted\" state MUST be passed up to the\n                // TU. The client transaction MUST NOT generate an ACK to the 2xx\n                // response. The client transaction takes no further action.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    // NOTE: This implementation herein is intentionally not RFC compliant.\n                    // While the first 2xx response for a given branch is passed up to the TU,\n                    // retransmissions of 2xx responses are absorbed and the ACK associated\n                    // with the original response is resent. This approach is taken because\n                    // our current transaction users are not currently in a good position to\n                    // deal with 2xx retransmission. This SHOULD NOT cause any compliance issues - ;)\n                    //\n                    // If we don't have a cache hit, pass the response to the TU.\n                    if (!this.ackRetransmissionCache.has(response.toTag)) {\n                        this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                        if (this.user.receiveResponse) this.user.receiveResponse(response);\n                        return;\n                    }\n                    // If we have a cache hit, try pulling the ACK from cache and retransmitting it.\n                    const ack = this.ackRetransmissionCache.get(response.toTag);\n                    if (ack) {\n                        this.send(ack.toString()).catch((error)=>{\n                            this.logTransportError(error, \"Failed to send retransmission of ACK to 2xx response.\");\n                        });\n                        return;\n                    }\n                    // If an ACK was not found in cache then we have received a retransmitted 2xx\n                    // response before the TU responded to the original response (we don't have an ACK yet).\n                    // So discard this response under the assumption that the TU will eventually\n                    // get us a ACK for the original response.\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // Any retransmissions of a response with status code 300-699 that\n                // are received while in the \"Completed\" state MUST cause the ACK to\n                // be re-passed to the transport layer for retransmission, but the\n                // newly received response MUST NOT be passed up to the TU.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.ack(response);\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        // Any response received that does not match an existing client\n        // transaction state machine is simply dropped. (Implementations are,\n        // of course, free to log or do other implementation-specific things\n        // with such responses, but the implementer should be sure to consider\n        // the impact of large numbers of malicious stray responses.)\n        // https://tools.ietf.org/html/rfc6026#section-7.2\n        const message = `Received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure\n     * has occurred, and the client transaction SHOULD transition directly\n     * to the \"Terminated\" state.  The TU will handle the failover\n     * mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - The error.\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated, true);\n    }\n    /** For logging. */ typeToString() {\n        return \"INVITE client transaction\";\n    }\n    ack(response) {\n        // The ACK request constructed by the client transaction MUST contain\n        // values for the Call-ID, From, and Request-URI that are equal to the\n        // values of those header fields in the request passed to the transport\n        // by the client transaction (call this the \"original request\"). The To\n        // header field in the ACK MUST equal the To header field in the\n        // response being acknowledged, and therefore will usually differ from\n        // the To header field in the original request by the addition of the\n        // tag parameter. The ACK MUST contain a single Via header field, and\n        // this MUST be equal to the top Via header field of the original\n        // request. The CSeq header field in the ACK MUST contain the same\n        // value for the sequence number as was present in the original request,\n        // but the method parameter MUST be equal to \"ACK\".\n        //\n        // If the INVITE request whose response is being acknowledged had Route\n        // header fields, those header fields MUST appear in the ACK. This is\n        // to ensure that the ACK can be routed properly through any downstream\n        // stateless proxies.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.3\n        const ruri = this.request.ruri;\n        const callId = this.request.callId;\n        const cseq = this.request.cseq;\n        const from = this.request.getHeader(\"from\");\n        const to = response.getHeader(\"to\");\n        const via = this.request.getHeader(\"via\");\n        const route = this.request.getHeader(\"route\");\n        if (!from) throw new Error(\"From undefined.\");\n        if (!to) throw new Error(\"To undefined.\");\n        if (!via) throw new Error(\"Via undefined.\");\n        let ack = `ACK ${ruri} SIP/2.0\\r\\n`;\n        if (route) ack += `Route: ${route}\\r\\n`;\n        ack += `Via: ${via}\\r\\n`;\n        ack += `To: ${to}\\r\\n`;\n        ack += `From: ${from}\\r\\n`;\n        ack += `Call-ID: ${callId}\\r\\n`;\n        ack += `CSeq: ${cseq} ACK\\r\\n`;\n        ack += `Max-Forwards: 70\\r\\n`;\n        ack += `Content-Length: 0\\r\\n\\r\\n`;\n        // TOOO: \"User-Agent\" header\n        this.send(ack).catch((error)=>{\n            this.logTransportError(error, \"Failed to send ACK to non-2xx response.\");\n        });\n        return;\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */ stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted:\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n                    if (!dueToTransportError) invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        // The client transaction MUST start Timer D when it enters the \"Completed\" state\n        // for any reason, with a value of at least 32 seconds for unreliable transports,\n        // and a value of zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.D = setTimeout(()=>this.timerD(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_D);\n        // The client transaction MUST transition to the \"Accepted\" state,\n        // and Timer M MUST be started with a value of 64*T1.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.M = setTimeout(()=>this.timerM(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_M);\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * When timer A fires, the client transaction MUST retransmit the\n     * request by passing it to the transport layer, and MUST reset the\n     * timer with a value of 2*T1.\n     * When timer A fires 2*T1 seconds later, the request MUST be\n     * retransmitted again (assuming the client transaction is still in this\n     * state). This process MUST continue so that the request is\n     * retransmitted with intervals that double after each transmission.\n     * These retransmissions SHOULD only be done while the client\n     * transaction is in the \"Calling\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */ timerA() {\n    // TODO\n    }\n    /**\n     * If the client transaction is still in the \"Calling\" state when timer\n     * B fires, the client transaction SHOULD inform the TU that a timeout\n     * has occurred.  The client transaction MUST NOT generate an ACK.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */ timerB() {\n        this.logger.debug(`Timer B expired for INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling) {\n            this.onRequestTimeout();\n            this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n        }\n    }\n    /**\n     * If Timer D fires while the client transaction is in the \"Completed\" state,\n     * the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */ timerD() {\n        this.logger.debug(`Timer D expired for INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n    /**\n     * If Timer M fires while the client transaction is in the \"Accepted\"\n     * state, the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */ timerM() {\n        this.logger.debug(`Timer M expired for INVITE client transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\n\n\n\n\n\n\nclass $2197579a8ac6d9b3$export$7c212e7e192429f3 {\n    constructor(transactionConstructor, core, message, delegate){\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.challenged = false;\n        this.stale = false;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-client\");\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */ get transaction() {\n        if (!this._transaction) throw new Error(\"Transaction undefined.\");\n        return this._transaction;\n    }\n    /**\n     * Since requests other than INVITE are responded to immediately, sending a\n     * CANCEL for a non-INVITE request would always create a race condition.\n     * A CANCEL request SHOULD NOT be sent to cancel a request other than INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-9.1\n     * @param options - Cancel options bucket.\n     */ cancel(reason, options = {}) {\n        if (!this.transaction) throw new Error(\"Transaction undefined.\");\n        if (!this.message.to) throw new Error(\"To undefined.\");\n        if (!this.message.from) throw new Error(\"From undefined.\");\n        // The following procedures are used to construct a CANCEL request.  The\n        // Request-URI, Call-ID, To, the numeric part of CSeq, and From header\n        // fields in the CANCEL request MUST be identical to those in the\n        // request being cancelled, including tags.  A CANCEL constructed by a\n        // client MUST have only a single Via header field value matching the\n        // top Via value in the request being cancelled.  Using the same values\n        // for these header fields allows the CANCEL to be matched with the\n        // request it cancels (Section 9.2 indicates how such matching occurs).\n        // However, the method part of the CSeq header field MUST have a value\n        // of CANCEL.  This allows it to be identified and processed as a\n        // transaction in its own right (See Section 17).\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        const message = this.core.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL, this.message.ruri, this.message.from.uri, this.message.to.uri, {\n            toTag: this.message.toTag,\n            fromTag: this.message.fromTag,\n            callId: this.message.callId,\n            cseq: this.message.cseq\n        }, options.extraHeaders);\n        // TODO: Revisit this.\n        // The CANCEL needs to use the same branch parameter so that\n        // it matches the INVITE transaction, but this is a hacky way to do this.\n        // Or at the very least not well documented. If the the branch parameter\n        // is set on the outgoing request, the transaction will use it.\n        // Otherwise the transaction will make a new one.\n        message.branch = this.message.branch;\n        if (this.message.headers.Route) message.headers.Route = this.message.headers.Route;\n        if (reason) message.setHeader(\"Reason\", reason);\n        // If no provisional response has been received, the CANCEL request MUST\n        // NOT be sent; rather, the client MUST wait for the arrival of a\n        // provisional response before sending the request. If the original\n        // request has generated a final response, the CANCEL SHOULD NOT be\n        // sent, as it is an effective no-op, since CANCEL has no effect on\n        // requests that have already generated a final response.\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        if (this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) new $2197579a8ac6d9b3$export$7c212e7e192429f3((0, $de2fac6d73c31956$export$56b95907db972eed), this.core, message);\n        else this.transaction.addStateChangeListener(()=>{\n            if (this.transaction && this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) new $2197579a8ac6d9b3$export$7c212e7e192429f3((0, $de2fac6d73c31956$export$56b95907db972eed), this.core, message);\n        }, {\n            once: true\n        });\n        return message;\n    }\n    /**\n     * If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n     * response is received, the UAC SHOULD follow the authorization\n     * procedures of Section 22.2 and Section 22.3 to retry the request with\n     * credentials.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n     * 22 Usage of HTTP Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22\n     * 22.1 Framework\n     * https://tools.ietf.org/html/rfc3261#section-22.1\n     * 22.2 User-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.2\n     * 22.3 Proxy-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.3\n     *\n     * FIXME: This \"guard for and retry the request with credentials\"\n     * implementation is not complete and at best minimally passable.\n     * @param response - The incoming response to guard.\n     * @param dialog - If defined, the dialog within which the response was received.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise the request is retried with credentials and current request processing must stop.\n     */ authenticationGuard(message, dialog) {\n        const statusCode = message.statusCode;\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        // If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n        // response is received, the UAC SHOULD follow the authorization\n        // procedures of Section 22.2 and Section 22.3 to retry the request with\n        // credentials.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        if (statusCode !== 401 && statusCode !== 407) return true;\n        // Get and parse the appropriate WWW-Authenticate or Proxy-Authenticate header.\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let challenge;\n        let authorizationHeaderName;\n        if (statusCode === 401) {\n            challenge = message.parseHeader(\"www-authenticate\");\n            authorizationHeaderName = \"authorization\";\n        } else {\n            challenge = message.parseHeader(\"proxy-authenticate\");\n            authorizationHeaderName = \"proxy-authorization\";\n        }\n        // Verify it seems a valid challenge.\n        if (!challenge) {\n            this.logger.warn(statusCode + \" with wrong or missing challenge, cannot authenticate\");\n            return true;\n        }\n        // Avoid infinite authentications.\n        if (this.challenged && (this.stale || challenge.stale !== true)) {\n            this.logger.warn(statusCode + \" apparently in authentication loop, cannot authenticate\");\n            return true;\n        }\n        // Get credentials.\n        if (!this.credentials) {\n            this.credentials = this.core.configuration.authenticationFactory();\n            if (!this.credentials) {\n                this.logger.warn(\"Unable to obtain credentials, cannot authenticate\");\n                return true;\n            }\n        }\n        // Verify that the challenge is really valid.\n        if (!this.credentials.authenticate(this.message, challenge)) return true;\n        this.challenged = true;\n        if (challenge.stale) this.stale = true;\n        // If response to out of dialog request, assume incrementing the CSeq will suffice.\n        let cseq = this.message.cseq += 1;\n        // If response to in dialog request, get a valid next CSeq number.\n        if (dialog && dialog.localSequenceNumber) {\n            dialog.incrementLocalSequenceNumber();\n            cseq = this.message.cseq = dialog.localSequenceNumber;\n        }\n        this.message.setHeader(\"cseq\", cseq + \" \" + this.message.method);\n        this.message.setHeader(authorizationHeaderName, this.credentials.toString());\n        // Calling init (again) will swap out our existing client transaction with a new one.\n        // FIXME: HACK: An assumption is being made here that there is nothing that needs to\n        // be cleaned up beyond the client transaction which is being replaced. For example,\n        // it is assumed that no early dialogs have been created.\n        this.init();\n        return false;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     */ onRequestTimeout() {\n        this.logger.warn(\"User agent client request timed out. Generating internal 408 Request Timeout.\");\n        const message = new (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)();\n        message.statusCode = 408;\n        message.reasonPhrase = \"Request Timeout\";\n        this.receiveResponse(message);\n        return;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     * @param error - Transport error\n     */ onTransportError(error) {\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error. Generating internal 503 Service Unavailable.\");\n        const message = new (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)();\n        message.statusCode = 503;\n        message.reasonPhrase = \"Service Unavailable\";\n        this.receiveResponse(message);\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */ receiveResponse(message) {\n        if (!this.authenticationGuard(message)) return;\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        switch(true){\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) this.delegate.onTrying({\n                    message: message\n                });\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) this.delegate.onProgress({\n                    message: message\n                });\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onAccept) this.delegate.onAccept({\n                    message: message\n                });\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onRedirect) this.delegate.onRedirect({\n                    message: message\n                });\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onReject) this.delegate.onReject({\n                    message: message\n                });\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onRequestTimeout: ()=>this.onRequestTimeout(),\n            onStateChange: (newState)=>{\n                if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentClients.delete(userAgentClientId);\n                    // FIXME: HACK: Our transaction may have been swapped out with a new one\n                    // post authentication (see above), so make sure to only to dispose of\n                    // ourselves if this terminating transaction is our current transaction.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    if (transaction === this._transaction) this.dispose();\n                }\n            },\n            onTransportError: (error)=>this.onTransportError(error),\n            receiveResponse: (message)=>this.receiveResponse(message)\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentClientId = transaction.id + transaction.request.method;\n        this.core.userAgentClients.set(userAgentClientId, this);\n    }\n}\n\n\nclass $d9aa6ae1832a414e$export$630de64a253e8ece extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n        dialog.dispose();\n    }\n}\n\n\n\n\n\nclass $0cbd58c5a3fb42c8$export$df10dc20c866a1e6 extends (0, $262349653c65a01b$export$b1147c41a9d85cf5) {\n    /**\n     * Constructor.\n     * After construction the transaction will be in the \"trying\": state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     * @param request - Incoming Non-INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */ constructor(request, transport, user){\n        super(request, transport, user, (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying, \"sip.transaction.nist\");\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.J) {\n            clearTimeout(this.J);\n            this.J = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */ get kind() {\n        return \"nist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    receiveRequest(request) {\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // If a retransmission of the request is received while in the \"Proceeding\" state,\n                // the most recently sent provisional response MUST be passed to the transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) throw new Error(\"Last response undefined.\");\n                this.send(this.lastResponse).catch((error)=>{\n                    this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                });\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // While in the \"Completed\" state, the server transaction MUST pass the final response to the transport\n                // layer for retransmission whenever a retransmission of the request is received. Any other final responses\n                // passed by the TU to the server transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) throw new Error(\"Last response undefined.\");\n                this.send(this.lastResponse).catch((error)=>{\n                    this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                });\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response. 101-199 not allowed per RFC 4320.\n     * @param response - Response to send.\n     */ receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) throw new Error(`Invalid status code ${statusCode}`);\n        // An SIP element MUST NOT send any provisional response with a\n        // Status-Code other than 100 to a non-INVITE request.\n        // An SIP element MUST NOT respond to a non-INVITE request with a\n        // Status-Code of 100 over any unreliable transport, such as UDP,\n        // before the amount of time it takes a client transaction's Timer E to be reset to T2.\n        // An SIP element MAY respond to a non-INVITE request with a\n        // Status-Code of 100 over a reliable transport at any time.\n        // https://tools.ietf.org/html/rfc4320#section-4.1\n        if (statusCode > 100 && statusCode <= 199) throw new Error(\"Provisional response other than 100 not allowed.\");\n        switch(this.state){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                // While in the \"Trying\" state, if the TU passes a provisional response\n                // to the server transaction, the server transaction MUST enter the \"Proceeding\" state.\n                // The response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 100 && statusCode < 200) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send provisional response.\");\n                    });\n                    return;\n                }\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                // Any further provisional responses that are received from the TU while\n                // in the \"Proceeding\" state MUST be passed to the transport layer for transmission.\n                // If the TU passes a final response (status codes 200-699) to the server while in\n                // the \"Proceeding\" state, the transaction MUST enter the \"Completed\" state, and\n                // the response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed);\n                    this.send(response).catch((error)=>{\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                // Any other final responses passed by the TU to the server\n                // transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                return;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and SHOULD transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.4\n     */ onTransportError(error) {\n        if (this.user.onTransportError) this.user.onTransportError(error);\n        this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated, true);\n    }\n    /** For logging. */ typeToString() {\n        return \"non-INVITE server transaction\";\n    }\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying:\n                invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) invalidStateTransition();\n                break;\n            case (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated:\n                if (this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding && this.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) {\n                    if (!dueToTransportError) invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // When the server transaction enters the \"Completed\" state, it MUST set Timer J to fire\n        // in 64*T1 seconds for unreliable transports, and zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.J = setTimeout(()=>this.timerJ(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_J);\n        // The server transaction MUST be destroyed the instant it enters the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) this.dispose();\n        this.setState(newState);\n    }\n    /**\n     * The server transaction remains in this state until Timer J fires,\n     * at which point it MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     */ timerJ() {\n        this.logger.debug(`Timer J expired for NON-INVITE server transaction ${this.id}.`);\n        if (this.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Completed) this.stateTransition((0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated);\n    }\n}\n\n\n\n\n\n\n\n\nclass $22662cbf0aefade3$export$b027d5103a9e8145 {\n    constructor(transactionConstructor, core, message, delegate){\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-server\");\n        this.toTag = message.toTag ? message.toTag : (0, $9ef5a4825b23ca0b$export$810aab6c3b803abf)();\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */ get transaction() {\n        if (!this._transaction) throw new Error(\"Transaction undefined.\");\n        return this._transaction;\n    }\n    accept(options = {\n        statusCode: 200\n    }) {\n        if (!this.acceptable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 200 || statusCode > 299) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const response = this.reply(options);\n        return response;\n    }\n    progress(options = {\n        statusCode: 180\n    }) {\n        if (!this.progressable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 101 || statusCode > 199) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const response = this.reply(options);\n        return response;\n    }\n    redirect(contacts, options = {\n        statusCode: 302\n    }) {\n        if (!this.redirectable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not redirectable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 300 || statusCode > 399) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const contactHeaders = new Array();\n        contacts.forEach((contact)=>contactHeaders.push(`Contact: ${contact.toString()}`));\n        options.extraHeaders = (options.extraHeaders || []).concat(contactHeaders);\n        const response = this.reply(options);\n        return response;\n    }\n    reject(options = {\n        statusCode: 480\n    }) {\n        if (!this.rejectable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not rejectable in state ${this.transaction.state}.`);\n        const statusCode = options.statusCode;\n        if (statusCode < 400 || statusCode > 699) throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        const response = this.reply(options);\n        return response;\n    }\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    trying(options) {\n        if (!this.tryingable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not tryingable in state ${this.transaction.state}.`);\n        const response = this.reply({\n            statusCode: 100\n        });\n        return response;\n    }\n    /**\n     * If the UAS did not find a matching transaction for the CANCEL\n     * according to the procedure above, it SHOULD respond to the CANCEL\n     * with a 481 (Call Leg/Transaction Does Not Exist).  If the transaction\n     * for the original request still exists, the behavior of the UAS on\n     * receiving a CANCEL request depends on whether it has already sent a\n     * final response for the original request.  If it has, the CANCEL\n     * request has no effect on the processing of the original request, no\n     * effect on any session state, and no effect on the responses generated\n     * for the original request.  If the UAS has not issued a final response\n     * for the original request, its behavior depends on the method of the\n     * original request.  If the original request was an INVITE, the UAS\n     * SHOULD immediately respond to the INVITE with a 487 (Request\n     * Terminated).  A CANCEL request has no impact on the processing of\n     * transactions with any other method defined in this specification.\n     * https://tools.ietf.org/html/rfc3261#section-9.2\n     * @param request - Incoming CANCEL request.\n     */ receiveCancel(message) {\n        // Note: Currently CANCEL is being handled as a special case.\n        // No UAS is created to handle the CANCEL and the response to\n        // it CANCEL is being handled statelessly by the user agent core.\n        // As such, there is currently no way to externally impact the\n        // response to the a CANCEL request.\n        if (this.delegate && this.delegate.onCancel) this.delegate.onCancel(message);\n    }\n    get acceptable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get progressable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return false; // https://tools.ietf.org/html/rfc4320#section-4.1\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get redirectable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get rejectable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying || this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get tryingable() {\n        if (this.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding;\n        if (this.transaction instanceof (0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6)) return this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Trying;\n        throw new Error(\"Unknown transaction type.\");\n    }\n    /**\n     * When a UAS wishes to construct a response to a request, it follows\n     * the general procedures detailed in the following subsections.\n     * Additional behaviors specific to the response code in question, which\n     * are not detailed in this section, may also be required.\n     *\n     * Once all procedures associated with the creation of a response have\n     * been completed, the UAS hands the response back to the server\n     * transaction from which it received the request.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.6\n     * @param statusCode - Status code to reply with.\n     * @param options - Reply options bucket.\n     */ reply(options) {\n        if (!options.toTag && options.statusCode !== 100) options.toTag = this.toTag;\n        options.userAgent = options.userAgent || this.core.configuration.userAgentHeaderFieldValue;\n        options.supported = options.supported || this.core.configuration.supportedOptionTagsResponse;\n        const response = (0, $fa12ff70cdbe77c4$export$4a2399f09281a6d4)(this.message, options);\n        this.transaction.receiveResponse(options.statusCode, response.message);\n        return response;\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onStateChange: (newState)=>{\n                if (newState === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentServers.delete(userAgentServerId);\n                    this.dispose();\n                }\n            },\n            onTransportError: (error)=>{\n                this.logger.error(error.message);\n                if (this.delegate && this.delegate.onTransportError) this.delegate.onTransportError(error);\n                else this.logger.error(\"User agent server response transport error.\");\n            }\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentServerId = transaction.id;\n        this.core.userAgentServers.set(transaction.id, this);\n    }\n}\n\n\nclass $69084a386acad000$export$6a29e9371256c3d0 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n\nclass $044342eadbfb8900$export$b308e67c32b6f112 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\nclass $e92497b459586ef1$export$772b8f02f1941c4b extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\nclass $783e517297d65771$export$3602b2fd01d6e2fe extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n    }\n}\n\n\n\n\nclass $08a363fd15b101f9$export$5c5e9b9267eb32a0 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), core, message, delegate);\n    }\n}\n\n\n\n\n\nclass $f19ef72855eb101d$export$151371809900896b extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction $f5249c700e8ff4ea$var$instanceOfDialog(object) {\n    return object.userAgentCore !== undefined;\n}\nclass $f5249c700e8ff4ea$export$ab41001c00baeb2c extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    /**\n     * NOTIFY UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog NOTIFY, UserAgentCore for out of dialog NOTIFY (deprecated).\n     * @param message - Incoming NOTIFY request message.\n     */ constructor(dialogOrCore, message, delegate){\n        const userAgentCore = $f5249c700e8ff4ea$var$instanceOfDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n\nclass $a8523058b2fef33d$export$424dbb5d332f10b4 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PRACK, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n        dialog.signalingStateTransition(message);\n    }\n}\n\n\n\n\nclass $3d5206d14e2a891b$export$e1cce83311913204 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), dialog.userAgentCore, message, delegate);\n        // Update dialog signaling state with offer/answer in body\n        dialog.signalingStateTransition(message);\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */ accept(options = {\n        statusCode: 200\n    }) {\n        if (options.body) // Update dialog signaling state with offer/answer in body\n        this.dialog.signalingStateTransition(options.body);\n        return super.accept(options);\n    }\n}\n\n\n\n\n\nclass $12099d1a10ca0749$export$6c7f5ec32d36fb7e extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE, options);\n        super((0, $0f79ac00a17f1010$export$815a7ced3416e5c7), dialog.userAgentCore, message, delegate);\n        this.delegate = delegate;\n        dialog.signalingStateTransition(message);\n        // FIXME: TODO: next line obviously needs to be improved...\n        dialog.reinviteUserAgentClient = this; // let the dialog know re-invite request sent\n        this.dialog = dialog;\n    }\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message, this.dialog)) return;\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        switch(true){\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) this.delegate.onTrying({\n                    message: message\n                });\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) this.delegate.onProgress({\n                    message: message,\n                    session: this.dialog,\n                    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                    prack: (options)=>{\n                        throw new Error(\"Unimplemented.\");\n                    }\n                });\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Update dialog signaling state with offer/answer in body\n                this.dialog.signalingStateTransition(message);\n                if (this.delegate && this.delegate.onAccept) this.delegate.onAccept({\n                    message: message,\n                    session: this.dialog,\n                    ack: (options)=>{\n                        const outgoingAckRequest = this.dialog.ack(options);\n                        return outgoingAckRequest;\n                    }\n                });\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onRedirect) this.delegate.onRedirect({\n                    message: message\n                });\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onReject) this.delegate.onReject({\n                    message: message\n                });\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n}\n\n\n\n\nclass $03c131d0db7aea8c$export$5bc130a72a84e472 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(dialog, message, delegate){\n        super((0, $81bc4312505cb83e$export$fdc050a01797e9de), dialog.userAgentCore, message, delegate);\n        dialog.reinviteUserAgentServer = this;\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */ accept(options = {\n        statusCode: 200\n    }) {\n        // FIXME: The next two lines SHOULD go away, but I suppose it's technically harmless...\n        // These are here because some versions of SIP.js prior to 0.13.8 set the route set\n        // of all in dialog ACKs based on the Record-Route headers in the associated 2xx\n        // response. While this worked for dialog forming 2xx responses, it was technically\n        // broken for re-INVITE ACKS as it only worked if the UAS populated the Record-Route\n        // headers in the re-INVITE 2xx response (which is not required and a waste of bandwidth\n        // as the should be ignored if present in re-INVITE ACKS) and the UAS populated\n        // the Record-Route headers with the correct values (would be weird not too, but...).\n        // Anyway, for now the technically useless Record-Route headers are being added\n        // to maintain \"backwards compatibility\" with the older broken versions of SIP.js.\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(this.dialog.routeSet.map((route)=>`Record-Route: ${route}`));\n        // Send and return the response\n        const response = super.accept(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        if (options.body) // Update dialog signaling state with offer/answer in body\n        this.dialog.signalingStateTransition(options.body);\n        // Update dialog\n        this.dialog.reConfirm();\n        return result;\n    }\n    /**\n     * Update the dialog signaling state on a 1xx response.\n     * @param options - Progress options bucket.\n     */ progress(options = {\n        statusCode: 180\n    }) {\n        // Send and return the response\n        const response = super.progress(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        // Update dialog signaling state\n        if (options.body) this.dialog.signalingStateTransition(options.body);\n        return result;\n    }\n    /**\n     * TODO: Not Yet Supported\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    redirect(contacts, options = {\n        statusCode: 302\n    }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * 3.1 Background on Re-INVITE Handling by UASs\n     * An error response to a re-INVITE has the following semantics.  As\n     * specified in Section 12.2.2 of RFC 3261 [RFC3261], if a re-INVITE is\n     * rejected, no state changes are performed.\n     * https://tools.ietf.org/html/rfc6141#section-3.1\n     * @param options - Reject options bucket.\n     */ reject(options = {\n        statusCode: 488\n    }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        return super.reject(options);\n    }\n}\n\n\n\n\n\nclass $88db9e488f43f678$export$7ac04b273f84cb0e extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n    }\n}\n\n\n\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction $61a4eb8bc96512de$var$instanceOfSessionDialog(object) {\n    return object.userAgentCore !== undefined;\n}\nclass $61a4eb8bc96512de$export$dac239e67229cfb6 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    /**\n     * REFER UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog REFER, UserAgentCore for out of dialog REFER.\n     * @param message - Incoming REFER request message.\n     */ constructor(dialogOrCore, message, delegate){\n        const userAgentCore = $61a4eb8bc96512de$var$instanceOfSessionDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), userAgentCore, message, delegate);\n    }\n}\n\n\n\nclass $ceae0939ee23f36b$export$4f1908a0a1a41606 extends (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153) {\n    constructor(initialTransaction, core, state, delegate){\n        super(core, state);\n        this.initialTransaction = initialTransaction;\n        /** The state of the offer/answer exchange. */ this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial;\n        /** True if waiting for an ACK to the initial transaction 2xx (UAS only). */ this.ackWait = false;\n        /** True if processing an ACK to the initial transaction 2xx (UAS only). */ this.ackProcessing = false;\n        this.delegate = delegate;\n        if (initialTransaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) // If we're created by an invite server transaction, we're\n        // going to be waiting for an ACK if are to be confirmed.\n        this.ackWait = true;\n        // If we're confirmed upon creation start the retransmitting whatever\n        // the 2xx final response was that confirmed us into existence.\n        if (!this.early) this.start2xxRetransmissionTimer();\n        this.signalingStateTransition(initialTransaction.request);\n        this.logger = core.loggerFactory.getLogger(\"sip.invite-dialog\");\n        this.logger.log(`INVITE dialog ${this.id} constructed`);\n    }\n    dispose() {\n        super.dispose();\n        this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed;\n        this._offer = undefined;\n        this._answer = undefined;\n        if (this.invite2xxTimer) {\n            clearTimeout(this.invite2xxTimer);\n            this.invite2xxTimer = undefined;\n        }\n        // The UAS MUST still respond to any pending requests received for that\n        // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n        // be generated to those pending requests.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.2\n        // TODO:\n        // this.userAgentServers.forEach((uas) => uas.reply(487));\n        this.logger.log(`INVITE dialog ${this.id} destroyed`);\n    }\n    // FIXME: Need real state machine\n    get sessionState() {\n        if (this.early) return (0, $12c24789242f875e$export$84bf1aca7aacb716).Early;\n        else if (this.ackWait) return (0, $12c24789242f875e$export$84bf1aca7aacb716).AckWait;\n        else if (this._signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed) return (0, $12c24789242f875e$export$84bf1aca7aacb716).Terminated;\n        else return (0, $12c24789242f875e$export$84bf1aca7aacb716).Confirmed;\n    }\n    /** The state of the offer/answer exchange. */ get signalingState() {\n        return this._signalingState;\n    }\n    /** The current offer. Undefined unless signaling state HaveLocalOffer, HaveRemoteOffer, of Stable. */ get offer() {\n        return this._offer;\n    }\n    /** The current answer. Undefined unless signaling state Stable. */ get answer() {\n        return this._answer;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */ confirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.early) this.start2xxRetransmissionTimer();\n        super.confirm();\n    }\n    /** Re-confirm the dialog. Only matters if handling re-INVITE request. */ reConfirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.reinviteUserAgentServer) this.startReInvite2xxRetransmissionTimer();\n    }\n    /**\n     * The UAC core MUST generate an ACK request for each 2xx received from\n     * the transaction layer.  The header fields of the ACK are constructed\n     * in the same way as for any request sent within a dialog (see Section\n     * 12) with the exception of the CSeq and the header fields related to\n     * authentication.  The sequence number of the CSeq header field MUST be\n     * the same as the INVITE being acknowledged, but the CSeq method MUST\n     * be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n     * the 2xx contains an offer (based on the rules above), the ACK MUST\n     * carry an answer in its body.  If the offer in the 2xx response is not\n     * acceptable, the UAC core MUST generate a valid answer in the ACK and\n     * then send a BYE immediately.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     * @param options - ACK options bucket.\n     */ ack(options = {}) {\n        this.logger.log(`INVITE dialog ${this.id} sending ACK request`);\n        let transaction;\n        if (this.reinviteUserAgentClient) {\n            // We're sending ACK for a re-INVITE\n            if (!(this.reinviteUserAgentClient.transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            transaction = this.reinviteUserAgentClient.transaction;\n            this.reinviteUserAgentClient = undefined;\n        } else {\n            // We're sending ACK for the initial INVITE\n            if (!(this.initialTransaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Initial transaction not instance of InviteClientTransaction.\");\n            transaction = this.initialTransaction;\n        }\n        const message = this.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK, {\n            cseq: transaction.request.cseq,\n            extraHeaders: options.extraHeaders,\n            body: options.body\n        });\n        transaction.ackResponse(message); // See InviteClientTransaction for details.\n        this.signalingStateTransition(message);\n        return {\n            message: message\n        };\n    }\n    /**\n     * Terminating a Session\n     *\n     * This section describes the procedures for terminating a session\n     * established by SIP.  The state of the session and the state of the\n     * dialog are very closely related.  When a session is initiated with an\n     * INVITE, each 1xx or 2xx response from a distinct UAS creates a\n     * dialog, and if that response completes the offer/answer exchange, it\n     * also creates a session.  As a result, each session is \"associated\"\n     * with a single dialog - the one which resulted in its creation.  If an\n     * initial INVITE generates a non-2xx final response, that terminates\n     * all sessions (if any) and all dialogs (if any) that were created\n     * through responses to the request.  By virtue of completing the\n     * transaction, a non-2xx final response also prevents further sessions\n     * from being created as a result of the INVITE.  The BYE request is\n     * used to terminate a specific session or attempted session.  In this\n     * case, the specific session is the one with the peer UA on the other\n     * side of the dialog.  When a BYE is received on a dialog, any session\n     * associated with that dialog SHOULD terminate.  A UA MUST NOT send a\n     * BYE outside of a dialog.  The caller's UA MAY send a BYE for either\n     * confirmed or early dialogs, and the callee's UA MAY send a BYE on\n     * confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n     *\n     * However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n     * until it has received an ACK for its 2xx response or until the server\n     * transaction times out.  If no SIP extensions have defined other\n     * application layer states associated with the dialog, the BYE also\n     * terminates the dialog.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-15\n     * FIXME: Make these proper Exceptions...\n     * @param options - BYE options bucket.\n     * @returns\n     * Throws `Error` if callee's UA attempts a BYE on an early dialog.\n     * Throws `Error` if callee's UA attempts a BYE on a confirmed dialog\n     *                while it's waiting on the ACK for its 2xx response.\n     */ bye(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending BYE request`);\n        // The caller's UA MAY send a BYE for either\n        // confirmed or early dialogs, and the callee's UA MAY send a BYE on\n        // confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n        //\n        // However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n        // until it has received an ACK for its 2xx response or until the server\n        // transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (this.initialTransaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) {\n            if (this.early) // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"UAS MUST NOT send a BYE on early dialogs.\");\n            if (this.ackWait && this.initialTransaction.state !== (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"UAS MUST NOT send a BYE on a confirmed dialog until it has received an ACK for its 2xx response or until the server transaction times out.\");\n        }\n        // A BYE request is constructed as would any other request within a\n        // dialog, as described in Section 12.\n        //\n        // Once the BYE is constructed, the UAC core creates a new non-INVITE\n        // client transaction, and passes it the BYE request.  The UAC MUST\n        // consider the session terminated (and therefore stop sending or\n        // listening for media) as soon as the BYE request is passed to the\n        // client transaction.  If the response for the BYE is a 481\n        // (Call/Transaction Does Not Exist) or a 408 (Request Timeout) or no\n        // response at all is received for the BYE (that is, a timeout is\n        // returned by the client transaction), the UAC MUST consider the\n        // session and the dialog terminated.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.1\n        return new (0, $d9aa6ae1832a414e$export$630de64a253e8ece)(this, delegate, options);\n    }\n    /**\n     * An INFO request can be associated with an Info Package (see\n     * Section 5), or associated with a legacy INFO usage (see Section 2).\n     *\n     * The construction of the INFO request is the same as any other\n     * non-target refresh request within an existing invite dialog usage as\n     * described in Section 12.2 of RFC 3261.\n     * https://tools.ietf.org/html/rfc6086#section-4.2.1\n     * @param options - Options bucket.\n     */ info(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INFO request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        return new (0, $044342eadbfb8900$export$b308e67c32b6f112)(this, delegate, options);\n    }\n    /**\n     * Modifying an Existing Session\n     *\n     * A successful INVITE request (see Section 13) establishes both a\n     * dialog between two user agents and a session using the offer-answer\n     * model.  Section 12 explains how to modify an existing dialog using a\n     * target refresh request (for example, changing the remote target URI\n     * of the dialog).  This section describes how to modify the actual\n     * session.  This modification can involve changing addresses or ports,\n     * adding a media stream, deleting a media stream, and so on.  This is\n     * accomplished by sending a new INVITE request within the same dialog\n     * that established the session.  An INVITE request sent within an\n     * existing dialog is known as a re-INVITE.\n     *\n     *    Note that a single re-INVITE can modify the dialog and the\n     *    parameters of the session at the same time.\n     *\n     * Either the caller or callee can modify an existing session.\n     * https://tools.ietf.org/html/rfc3261#section-14\n     * @param options - Options bucket\n     */ invite(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INVITE request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        // Note that a UAC MUST NOT initiate a new INVITE transaction within a\n        // dialog while another INVITE transaction is in progress in either\n        // direction.\n        //\n        //    1. If there is an ongoing INVITE client transaction, the TU MUST\n        //       wait until the transaction reaches the completed or terminated\n        //       state before initiating the new INVITE.\n        //\n        //    2. If there is an ongoing INVITE server transaction, the TU MUST\n        //       wait until the transaction reaches the confirmed or terminated\n        //       state before initiating the new INVITE.\n        //\n        // However, a UA MAY initiate a regular transaction while an INVITE\n        // transaction is in progress.  A UA MAY also initiate an INVITE\n        // transaction while a regular transaction is in progress.\n        // https://tools.ietf.org/html/rfc3261#section-14.1\n        if (this.reinviteUserAgentClient) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"There is an ongoing re-INVITE client transaction.\");\n        if (this.reinviteUserAgentServer) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"There is an ongoing re-INVITE server transaction.\");\n        return new (0, $12099d1a10ca0749$export$6c7f5ec32d36fb7e)(this, delegate, options);\n    }\n    /**\n     * A UAC MAY associate a MESSAGE request with an existing dialog.  If a\n     * MESSAGE request is sent within a dialog, it is \"associated\" with any\n     * media session or sessions associated with that dialog.\n     * https://tools.ietf.org/html/rfc3428#section-4\n     * @param options - Options bucket.\n     */ message(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending MESSAGE request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        const message = this.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE, options);\n        return new (0, $783e517297d65771$export$3602b2fd01d6e2fe)(this.core, message, delegate);\n    }\n    /**\n     * The NOTIFY mechanism defined in [2] MUST be used to inform the agent\n     * sending the REFER of the status of the reference.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.4\n     * @param options - Options bucket.\n     */ notify(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending NOTIFY request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        return new (0, $f19ef72855eb101d$export$151371809900896b)(this, delegate, options);\n    }\n    /**\n     * Assuming the response is to be transmitted reliably, the UAC MUST\n     * create a new request with method PRACK.  This request is sent within\n     * the dialog associated with the provisional response (indeed, the\n     * provisional response may have created the dialog).  PRACK requests\n     * MAY contain bodies, which are interpreted according to their type and\n     * disposition.\n     * https://tools.ietf.org/html/rfc3262#section-4\n     * @param options - Options bucket.\n     */ prack(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending PRACK request`);\n        return new (0, $a8523058b2fef33d$export$424dbb5d332f10b4)(this, delegate, options);\n    }\n    /**\n     * REFER is a SIP request and is constructed as defined in [1].  A REFER\n     * request MUST contain exactly one Refer-To header field value.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.1\n     * @param options - Options bucket.\n     */ refer(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending REFER request`);\n        if (this.early) // FIXME: TODO: This should throw a proper exception.\n        throw new Error(\"Dialog not confirmed.\");\n        // FIXME: TODO: Validate Refer-To header field value.\n        return new (0, $88db9e488f43f678$export$7ac04b273f84cb0e)(this, delegate, options);\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */ receiveRequest(message) {\n        this.logger.log(`INVITE dialog ${this.id} received ${message.method} request`);\n        // Response retransmissions cease when an ACK request for the\n        // response is received.  This is independent of whatever transport\n        // protocols are used to send the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) {\n            // If ackWait is true, then this is the ACK to the initial INVITE,\n            // otherwise this is an ACK to an in dialog INVITE. In either case,\n            // guard to make sure the sequence number of the ACK matches the INVITE.\n            if (this.ackWait) {\n                if (this.initialTransaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7)) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.initialTransaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                // Update before the delegate has a chance to handle the\n                // message as delegate may callback into this dialog.\n                this.ackWait = false;\n            } else {\n                if (!this.reinviteUserAgentServer) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.reinviteUserAgentServer.transaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                this.reinviteUserAgentServer = undefined;\n            }\n            this.signalingStateTransition(message);\n            if (this.delegate && this.delegate.onAck) {\n                const promiseOrVoid = this.delegate.onAck({\n                    message: message\n                });\n                if (promiseOrVoid instanceof Promise) {\n                    this.ackProcessing = true; // make sure this is always reset to false\n                    promiseOrVoid.then(()=>this.ackProcessing = false).catch(()=>this.ackProcessing = false);\n                }\n            }\n            return;\n        }\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`INVITE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Handle various INVITE related cross-over, glare and race conditions\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n            // Hopefully this message is helpful...\n            const warning = ()=>{\n                const reason = this.ackWait ? \"waiting for initial ACK\" : \"processing initial ACK\";\n                this.logger.warn(`INVITE dialog ${this.id} received re-INVITE while ${reason}`);\n                let msg = \"RFC 5407 suggests the following to avoid this race condition... \";\n                msg += \" Note: Implementation issues are outside the scope of this document,\";\n                msg += \" but the following tip is provided for avoiding race conditions of\";\n                msg += \" this type.  The caller can delay sending re-INVITE F6 for some period\";\n                msg += \" of time (2 seconds, perhaps), after which the caller can reasonably\";\n                msg += \" assume that its ACK has been received.  Implementors can decouple the\";\n                msg += \" actions of the user (e.g., pressing the hold button) from the actions\";\n                msg += \" of the protocol (the sending of re-INVITE F6), so that the UA can\";\n                msg += \" behave like this.  In this case, it is the implementor's choice as to\";\n                msg += \" how long to wait.  In most cases, such an implementation may be\";\n                msg += \" useful to prevent the type of race condition shown in this section.\";\n                msg += \" This document expresses no preference about whether or not they\";\n                msg += \" should wait for an ACK to be delivered.  After considering the impact\";\n                msg += \" on user experience, implementors should decide whether or not to wait\";\n                msg += \" for a while, because the user experience depends on the\";\n                msg += \" implementation and has no direct bearing on protocol behavior.\";\n                this.logger.warn(msg);\n                return; // drop re-INVITE request message\n            };\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            const retryAfter = Math.floor(Math.random() * 10) + 1;\n            const extraHeaders = [\n                `Retry-After: ${retryAfter}`\n            ];\n            // There may be ONLY ONE offer/answer negotiation in progress for a\n            // single dialog at any point in time.  Section 4 explains how to ensure\n            // this.\n            // https://tools.ietf.org/html/rfc6337#section-2.2\n            if (this.ackProcessing) {\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, {\n                    statusCode: 500,\n                    extraHeaders: extraHeaders\n                });\n                warning();\n                return;\n            }\n            // 3.1.4.  Callee Receives re-INVITE (Established State)  While in the\n            // Moratorium State (Case 1)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.4\n            // 3.1.5.  Callee Receives re-INVITE (Established State) While in the\n            // Moratorium State (Case 2)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.5\n            if (this.ackWait && this.signalingState !== (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) {\n                // This scenario is basically the same as that of Section 3.1.4, but\n                // differs in sending an offer in the 200 and an answer in the ACK.  In\n                // contrast to the previous case, the offer in the 200 (F3) and the\n                // offer in the re-INVITE (F6) collide with each other.\n                //\n                // Bob sends a 491 to the re-INVITE (F6) since he is not able to\n                // properly handle a new request until he receives an answer.  (Note:\n                // 500 with a Retry-After header may be returned if the 491 response is\n                // understood to indicate request collision.  However, 491 is\n                // recommended here because 500 applies to so many cases that it is\n                // difficult to determine what the real problem was.)\n                // https://tools.ietf.org/html/rfc5407#section-3.1.5\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, {\n                    statusCode: 500,\n                    extraHeaders: extraHeaders\n                });\n                warning();\n                return;\n            }\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentServer) {\n                this.core.replyStateless(message, {\n                    statusCode: 500,\n                    extraHeaders: extraHeaders\n                });\n                return;\n            }\n            // A UAS that receives an INVITE on a dialog while an INVITE it had sent\n            // on that dialog is in progress MUST return a 491 (Request Pending)\n            // response to the received INVITE.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentClient) {\n                this.core.replyStateless(message, {\n                    statusCode: 491\n                });\n                return;\n            }\n        }\n        // Requests within a dialog MAY contain Record-Route and Contact header\n        // fields.  However, these requests do not cause the dialog's route set\n        // to be modified, although they may modify the remote target URI.\n        // Specifically, requests that are not target refresh requests do not\n        // modify the dialog's remote target URI, and requests that are target\n        // refresh requests do.  For dialogs that have been established with an\n        // INVITE, the only target refresh request defined is re-INVITE (see\n        // Section 14).  Other extensions may define different target refresh\n        // requests for dialogs established in other ways.\n        //\n        //    Note that an ACK is NOT a target refresh request.\n        //\n        // Target refresh requests only update the dialog's remote target URI,\n        // and not the route set formed from the Record-Route.  Updating the\n        // latter would introduce severe backwards compatibility problems with\n        // RFC 2543-compliant systems.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n            // FIXME: parser needs to be typed...\n            const contact = message.parseHeader(\"contact\");\n            if (!contact) // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n            if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n            this.dialogState.remoteTarget = contact.uri;\n        }\n        // Switch on method and then delegate.\n        switch(message.method){\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE:\n                // A UAS core receiving a BYE request for an existing dialog MUST follow\n                // the procedures of Section 12.2.2 to process the request.  Once done,\n                // the UAS SHOULD terminate the session (and therefore stop sending and\n                // listening for media).  The only case where it can elect not to are\n                // multicast sessions, where participation is possible even if the other\n                // participant in the dialog has terminated its involvement in the\n                // session.  Whether or not it ends its participation on the session,\n                // the UAS core MUST generate a 2xx response to the BYE, and MUST pass\n                // that to the server transaction for transmission.\n                //\n                // The UAS MUST still respond to any pending requests received for that\n                // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n                // be generated to those pending requests.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                {\n                    const uas = new (0, $69084a386acad000$export$6a29e9371256c3d0)(this, message);\n                    this.delegate && this.delegate.onBye ? this.delegate.onBye(uas) : uas.accept();\n                    this.dispose();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO:\n                // If a UA receives an INFO request associated with an Info Package that\n                // the UA has not indicated willingness to receive, the UA MUST send a\n                // 469 (Bad Info Package) response (see Section 11.6), which contains a\n                // Recv-Info header field with Info Packages for which the UA is willing\n                // to receive INFO requests.\n                {\n                    const uas = new (0, $e92497b459586ef1$export$772b8f02f1941c4b)(this, message);\n                    this.delegate && this.delegate.onInfo ? this.delegate.onInfo(uas) : uas.reject({\n                        statusCode: 469,\n                        extraHeaders: [\n                            \"Recv-Info:\"\n                        ]\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE:\n                // If the new session description is not acceptable, the UAS can reject\n                // it by returning a 488 (Not Acceptable Here) response for the re-\n                // INVITE.  This response SHOULD include a Warning header field.\n                // https://tools.ietf.org/html/rfc3261#section-14.2\n                {\n                    const uas = new (0, $03c131d0db7aea8c$export$5bc130a72a84e472)(this, message);\n                    this.signalingStateTransition(message);\n                    this.delegate && this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject({\n                        statusCode: 488\n                    }); // TODO: Warning header field.\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE:\n                {\n                    const uas = new (0, $08a363fd15b101f9$export$5c5e9b9267eb32a0)(this.core, message);\n                    this.delegate && this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.4\n                {\n                    const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n                    this.delegate && this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PRACK:\n                // https://tools.ietf.org/html/rfc3262#section-4\n                {\n                    const uas = new (0, $3d5206d14e2a891b$export$e1cce83311913204)(this, message);\n                    this.delegate && this.delegate.onPrack ? this.delegate.onPrack(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new (0, $61a4eb8bc96512de$export$dac239e67229cfb6)(this, message);\n                    this.delegate && this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject();\n                }\n                break;\n            default:\n                this.logger.log(`INVITE dialog ${this.id} received unimplemented ${message.method} request`);\n                this.core.replyStateless(message, {\n                    statusCode: 501\n                });\n                break;\n        }\n    }\n    /**\n     * Guard against out of order reliable provisional responses and retransmissions.\n     * Returns false if the response should be discarded, otherwise true.\n     * @param message - Incoming response message within this dialog.\n     */ reliableSequenceGuard(message) {\n        const statusCode = message.statusCode;\n        if (!statusCode) throw new Error(\"Status code undefined\");\n        if (statusCode > 100 && statusCode < 200) {\n            // If a provisional response is received for an initial request, and\n            // that response contains a Require header field containing the option\n            // tag 100rel, the response is to be sent reliably.  If the response is\n            // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n            // ignored, and the procedures below MUST NOT be used.\n            // https://tools.ietf.org/html/rfc3262#section-4\n            const requireHeader = message.getHeader(\"require\");\n            const rseqHeader = message.getHeader(\"rseq\");\n            const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n            if (rseq) {\n                // Handling of subsequent reliable provisional responses for the same\n                // initial request follows the same rules as above, with the following\n                // difference: reliable provisional responses are guaranteed to be in\n                // order.  As a result, if the UAC receives another reliable provisional\n                // response to the same request, and its RSeq value is not one higher\n                // than the value of the sequence number, that response MUST NOT be\n                // acknowledged with a PRACK, and MUST NOT be processed further by the\n                // UAC.  An implementation MAY discard the response, or MAY cache the\n                // response in the hopes of receiving the missing responses.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                if (this.rseq && this.rseq + 1 !== rseq) return false;\n                // Once a reliable provisional response is received, retransmissions of\n                // that response MUST be discarded.  A response is a retransmission when\n                // its dialog ID, CSeq, and RSeq match the original response.  The UAC\n                // MUST maintain a sequence number that indicates the most recently\n                // received in-order reliable provisional response for the initial\n                // request.  This sequence number MUST be maintained until a final\n                // response is received for the initial request.  Its value MUST be\n                // initialized to the RSeq header field in the first reliable\n                // provisional response received for the initial request.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                this.rseq = this.rseq ? this.rseq + 1 : rseq;\n            }\n        }\n        return true;\n    }\n    /**\n     * If not in a stable signaling state, rollback to prior stable signaling state.\n     */ signalingStateRollback() {\n        if (this._signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer || this.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer) {\n            if (this._rollbackOffer && this._rollbackAnswer) {\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._offer = this._rollbackOffer;\n                this._answer = this._rollbackAnswer;\n            }\n        }\n    }\n    /**\n     * Update the signaling state of the dialog.\n     * @param message - The message to base the update off of.\n     */ signalingStateTransition(message) {\n        const body = (0, $35e2f96fad41499f$export$135b49d4bc2964c6)(message);\n        // No body, no session. No, woman, no cry.\n        if (!body || body.contentDisposition !== \"session\") return;\n        // We've got an existing offer and answer which we may wish to rollback to\n        if (this._signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) {\n            this._rollbackOffer = this._offer;\n            this._rollbackAnswer = this._answer;\n        }\n        // We're in UAS role, receiving incoming request with session description\n        if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n        // We're in UAC role, receiving incoming response with session description\n        if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n        // We're in UAC role, sending outgoing request with session description\n        if (message instanceof (0, $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n        // We're in UAS role, sending outgoing response with session description\n        if ((0, $35e2f96fad41499f$export$540dbd453ede1ce3)(message)) switch(this._signalingState){\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial:\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer;\n                this._offer = body;\n                this._answer = undefined;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer:\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer:\n                this._signalingState = (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable;\n                this._answer = body;\n                break;\n            case (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Closed:\n                break;\n            default:\n                throw new Error(\"Unexpected signaling state.\");\n        }\n    }\n    start2xxRetransmissionTimer() {\n        if (this.initialTransaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) {\n            const transaction = this.initialTransaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1;\n            const retransmission = ()=>{\n                if (!this.ackWait) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = ()=>{\n                if (transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    if (this.ackWait) {\n                        if (this.delegate && this.delegate.onAckTimeout) this.delegate.onAckTimeout();\n                        else this.bye();\n                    }\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n    // FIXME: Refactor\n    startReInvite2xxRetransmissionTimer() {\n        if (this.reinviteUserAgentServer && this.reinviteUserAgentServer.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de)) {\n            const transaction = this.reinviteUserAgentServer.transaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T1;\n            const retransmission = ()=>{\n                if (!this.reinviteUserAgentServer) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = ()=>{\n                if (transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    this.reinviteUserAgentServer;\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n}\n\n\n\n\n\n\nclass $0f92a99d89cb70d4$export$6ca778570a388e6c extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $0f79ac00a17f1010$export$815a7ced3416e5c7), core, message, delegate);\n        this.confirmedDialogAcks = new Map();\n        this.confirmedDialogs = new Map();\n        this.earlyDialogs = new Map();\n        this.delegate = delegate;\n    }\n    dispose() {\n        // The UAC core considers the INVITE transaction completed 64*T1 seconds\n        // after the reception of the first 2xx response.  At this point all the\n        // early dialogs that have not transitioned to established dialogs are\n        // terminated.  Once the INVITE transaction is considered completed by\n        // the UAC core, no more new 2xx responses are expected to arrive.\n        //\n        // If, after acknowledging any 2xx response to an INVITE, the UAC does\n        // not want to continue with that dialog, then the UAC MUST terminate\n        // the dialog by sending a BYE request as described in Section 15.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n        this.earlyDialogs.forEach((earlyDialog)=>earlyDialog.dispose());\n        this.earlyDialogs.clear();\n        super.dispose();\n    }\n    /**\n     * Special case for transport error while sending ACK.\n     * @param error - Transport error\n     */ onTransportError(error) {\n        if (this.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Calling) return super.onTransportError(error);\n        // If not in 'calling' state, the transport error occurred while sending an ACK.\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error while sending ACK.\");\n    }\n    /**\n     * Once the INVITE has been passed to the INVITE client transaction, the\n     * UAC waits for responses for the INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2\n     * @param incomingResponse - Incoming response to INVITE request.\n     */ receiveResponse(message) {\n        if (!this.authenticationGuard(message)) return;\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) throw new Error(\"Response status code undefined.\");\n        switch(true){\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) this.delegate.onTrying({\n                    message: message\n                });\n                return;\n            case /^1[0-9]{2}$/.test(statusCode):\n                // Zero, one or multiple provisional responses may arrive before one or\n                // more final responses are received.  Provisional responses for an\n                // INVITE request can create \"early dialogs\".  If a provisional response\n                // has a tag in the To field, and if the dialog ID of the response does\n                // not match an existing dialog, one is constructed using the procedures\n                // defined in Section 12.1.2.\n                //\n                // The early dialog will only be needed if the UAC needs to send a\n                // request to its peer within the dialog before the initial INVITE\n                // transaction completes.  Header fields present in a provisional\n                // response are applicable as long as the dialog is in the early state\n                // (for example, an Allow header field in a provisional response\n                // contains the methods that can be used in the dialog while this is in\n                // the early state).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.1\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Provisional without to tag, no dialog to create.\n                    if (!message.toTag) {\n                        this.logger.warn(\"Non-100 1xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Provisional without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"Non-100 1xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentClient(this.message, message);\n                    // Have existing early dialog or create a new one.\n                    let earlyDialog = this.earlyDialogs.get(dialogState.id);\n                    if (!earlyDialog) {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        earlyDialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, dialogState);\n                        this.earlyDialogs.set(earlyDialog.id, earlyDialog);\n                    }\n                    // Guard against out of order reliable provisional responses.\n                    // Note that this is where the rseq tracking is done.\n                    if (!earlyDialog.reliableSequenceGuard(message)) {\n                        this.logger.warn(\"1xx INVITE reliable response received out of order or is a retransmission, dropping.\");\n                        return;\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (earlyDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial || earlyDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer) earlyDialog.signalingStateTransition(message);\n                    // Pass response to delegate.\n                    const session = earlyDialog;\n                    if (this.delegate && this.delegate.onProgress) this.delegate.onProgress({\n                        message: message,\n                        session: session,\n                        prack: (options)=>{\n                            const outgoingPrackRequest = session.prack(undefined, options);\n                            return outgoingPrackRequest;\n                        }\n                    });\n                }\n                return;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Multiple 2xx responses may arrive at the UAC for a single INVITE\n                // request due to a forking proxy.  Each response is distinguished by\n                // the tag parameter in the To header field, and each represents a\n                // distinct dialog, with a distinct dialog identifier.\n                //\n                // If the dialog identifier in the 2xx response matches the dialog\n                // identifier of an existing dialog, the dialog MUST be transitioned to\n                // the \"confirmed\" state, and the route set for the dialog MUST be\n                // recomputed based on the 2xx response using the procedures of Section\n                // 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n                // constructed using the procedures of Section 12.1.2.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Final without to tag, malformed response.\n                    if (!message.toTag) {\n                        this.logger.error(\"2xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Final without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"2xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentClient(this.message, message);\n                    // NOTE: Currently our transaction layer is caching the 2xx ACKs and\n                    // handling retransmissions of the ACK which is an approach which is\n                    // not to spec. In any event, this block is intended to provide a to\n                    // spec implementation of ACK retransmissions, but it should not be\n                    // hit currently.\n                    let dialog = this.confirmedDialogs.get(dialogState.id);\n                    if (dialog) {\n                        // Once the ACK has been constructed, the procedures of [4] are used to\n                        // determine the destination address, port and transport.  However, the\n                        // request is passed to the transport layer directly for transmission,\n                        // rather than a client transaction.  This is because the UAC core\n                        // handles retransmissions of the ACK, not the transaction layer.  The\n                        // ACK MUST be passed to the client transport every time a\n                        // retransmission of the 2xx final response that triggered the ACK\n                        // arrives.\n                        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                        const outgoingAckRequest = this.confirmedDialogAcks.get(dialogState.id);\n                        if (outgoingAckRequest) {\n                            const transaction = this.transaction;\n                            if (!(transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Client transaction not instance of InviteClientTransaction.\");\n                            transaction.ackResponse(outgoingAckRequest.message);\n                        }\n                        return;\n                    }\n                    // If the dialog identifier in the 2xx response matches the dialog\n                    // identifier of an existing dialog, the dialog MUST be transitioned to\n                    // the \"confirmed\" state, and the route set for the dialog MUST be\n                    // recomputed based on the 2xx response using the procedures of Section\n                    // 12.2.1.2. Otherwise, a new dialog in the \"confirmed\" state MUST be\n                    // constructed using the procedures of Section 12.1.2.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    dialog = this.earlyDialogs.get(dialogState.id);\n                    if (dialog) {\n                        dialog.confirm();\n                        dialog.recomputeRouteSet(message);\n                        this.earlyDialogs.delete(dialog.id);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    } else {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof (0, $0f79ac00a17f1010$export$815a7ced3416e5c7))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        dialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, dialogState);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (dialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial || dialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveLocalOffer) dialog.signalingStateTransition(message);\n                    // Session Initiated! :)\n                    const session = dialog;\n                    // The UAC core MUST generate an ACK request for each 2xx received from\n                    // the transaction layer.  The header fields of the ACK are constructed\n                    // in the same way as for any request sent within a dialog (see Section\n                    // 12) with the exception of the CSeq and the header fields related to\n                    // authentication.  The sequence number of the CSeq header field MUST be\n                    // the same as the INVITE being acknowledged, but the CSeq method MUST\n                    // be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n                    // the 2xx contains an offer (based on the rules above), the ACK MUST\n                    // carry an answer in its body.  If the offer in the 2xx response is not\n                    // acceptable, the UAC core MUST generate a valid answer in the ACK and\n                    // then send a BYE immediately.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    if (this.delegate && this.delegate.onAccept) this.delegate.onAccept({\n                        message: message,\n                        session: session,\n                        ack: (options)=>{\n                            const outgoingAckRequest = session.ack(options);\n                            this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                            return outgoingAckRequest;\n                        }\n                    });\n                    else {\n                        const outgoingAckRequest = session.ack();\n                        this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                    }\n                }\n                return;\n            case /^3[0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog)=>earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A 3xx response may contain one or more Contact header field values\n                // providing new addresses where the callee might be reachable.\n                // Depending on the status code of the 3xx response (see Section 21.3),\n                // the UAC MAY choose to try those new addresses.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.2\n                if (this.delegate && this.delegate.onRedirect) this.delegate.onRedirect({\n                    message: message\n                });\n                return;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog)=>earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A single non-2xx final response may be received for the INVITE.  4xx,\n                // 5xx and 6xx responses may contain a Contact header field value\n                // indicating the location where additional information about the error\n                // can be found.  Subsequent final responses (which would only arrive\n                // under error conditions) MUST be ignored.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                if (this.delegate && this.delegate.onReject) this.delegate.onReject({\n                    message: message\n                });\n                return;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n        throw new Error(`Executing what should be an unreachable code path receiving ${statusCode} response.`);\n    }\n}\n\n\n\n\n\n\n\n\n\nclass $f13700957d08a111$export$fcc77d6d1624c472 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $81bc4312505cb83e$export$fdc050a01797e9de), core, message, delegate);\n        this.core = core;\n    }\n    dispose() {\n        if (this.earlyDialog) this.earlyDialog.dispose();\n        super.dispose();\n    }\n    /**\n     * 13.3.1.4 The INVITE is Accepted\n     * The UAS core generates a 2xx response.  This response establishes a\n     * dialog, and therefore follows the procedures of Section 12.1.1 in\n     * addition to those of Section 8.2.6.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n     * @param options - Accept options bucket.\n     */ accept(options = {\n        statusCode: 200\n    }) {\n        if (!this.acceptable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.confirmedDialog) {\n            if (this.earlyDialog) {\n                this.earlyDialog.confirm();\n                this.confirmedDialog = this.earlyDialog;\n                this.earlyDialog = undefined;\n            } else {\n                const transaction = this.transaction;\n                if (!(transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                const state = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentServer(this.message, this.toTag);\n                this.confirmedDialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, state);\n            }\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header)=>`Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact.toString()}`;\n        // A 2xx response to an INVITE SHOULD contain the Allow header field and\n        // the Supported header field, and MAY contain the Accept header field.\n        // Including these header fields allows the UAC to determine the\n        // features and extensions supported by the UAS for the duration of the\n        // call, without probing.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        // FIXME: TODO: This should not be hard coded.\n        const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n        // FIXME: TODO: Supported header (see reply())\n        // FIXME: TODO: Accept header\n        // If the INVITE request contained an offer, and the UAS had not yet\n        // sent an answer, the 2xx MUST contain an answer.  If the INVITE did\n        // not contain an offer, the 2xx MUST contain an offer if the UAS had\n        // not yet sent an offer.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!options.body) {\n            if (this.confirmedDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) options.body = this.confirmedDialog.answer; // resend the answer sent in provisional response\n            else if (this.confirmedDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Initial || this.confirmedDialog.signalingState === (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).HaveRemoteOffer) throw new Error(\"Response must have a body.\");\n        }\n        options.statusCode = options.statusCode || 200;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.accept(options);\n        const session = this.confirmedDialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        // Update dialog signaling state\n        if (options.body) // Once the UAS has sent or received an answer to the initial\n        // offer, it MUST NOT generate subsequent offers in any responses\n        // to the initial INVITE.  This means that a UAS based on this\n        // specification alone can never generate subsequent offers until\n        // completion of the initial transaction.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        {\n            if (this.confirmedDialog.signalingState !== (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) this.confirmedDialog.signalingStateTransition(options.body);\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.1 Progress\n     * If the UAS is not able to answer the invitation immediately, it can\n     * choose to indicate some kind of progress to the UAC (for example, an\n     * indication that a phone is ringing).  This is accomplished with a\n     * provisional response between 101 and 199.  These provisional\n     * responses establish early dialogs and therefore follow the procedures\n     * of Section 12.1.1 in addition to those of Section 8.2.6.  A UAS MAY\n     * send as many provisional responses as it likes.  Each of these MUST\n     * indicate the same dialog ID.  However, these will not be delivered\n     * reliably.\n     *\n     * If the UAS desires an extended period of time to answer the INVITE,\n     * it will need to ask for an \"extension\" in order to prevent proxies\n     * from canceling the transaction.  A proxy has the option of canceling\n     * a transaction when there is a gap of 3 minutes between responses in a\n     * transaction.  To prevent cancellation, the UAS MUST send a non-100\n     * provisional response at every minute, to handle the possibility of\n     * lost provisional responses.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.1\n     * @param options - Progress options bucket.\n     */ progress(options = {\n        statusCode: 180\n    }) {\n        if (!this.progressable) throw new (0, $507bd02c449dbf58$export$c030d241ccd2f0c6)(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.earlyDialog) {\n            const transaction = this.transaction;\n            if (!(transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de))) throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            const state = (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153).initialDialogStateForUserAgentServer(this.message, this.toTag, true);\n            this.earlyDialog = new (0, $ceae0939ee23f36b$export$4f1908a0a1a41606)(transaction, this.core, state);\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header)=>`Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact}`;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.progress(options);\n        const session = this.earlyDialog;\n        const result = Object.assign(Object.assign({}, response), {\n            session: session\n        });\n        // Update dialog signaling state\n        if (options.body) // Once the UAS has sent or received an answer to the initial\n        // offer, it MUST NOT generate subsequent offers in any responses\n        // to the initial INVITE.  This means that a UAS based on this\n        // specification alone can never generate subsequent offers until\n        // completion of the initial transaction.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        {\n            if (this.earlyDialog.signalingState !== (0, $12c24789242f875e$export$8cb9fe9f0b3bb1c7).Stable) this.earlyDialog.signalingStateTransition(options.body);\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.2 The INVITE is Redirected\n     * If the UAS decides to redirect the call, a 3xx response is sent.  A\n     * 300 (Multiple Choices), 301 (Moved Permanently) or 302 (Moved\n     * Temporarily) response SHOULD contain a Contact header field\n     * containing one or more URIs of new addresses to be tried.  The\n     * response is passed to the INVITE server transaction, which will deal\n     * with its retransmissions.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.2\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */ redirect(contacts, options = {\n        statusCode: 302\n    }) {\n        return super.redirect(contacts, options);\n    }\n    /**\n     * 13.3.1.3 The INVITE is Rejected\n     * A common scenario occurs when the callee is currently not willing or\n     * able to take additional calls at this end system.  A 486 (Busy Here)\n     * SHOULD be returned in such a scenario.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n     * @param options - Reject options bucket.\n     */ reject(options = {\n        statusCode: 486\n    }) {\n        return super.reject(options);\n    }\n}\n\n\n\n\n\n\n\nclass $b88f78f9f1f05862$export$d7ea912f644d1be1 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n    }\n}\n\n\n\n\n\nclass $31dbebbbce838c73$export$50216c3f2f5df938 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n    }\n}\n\n\n\n\nclass $255bb24940d3e795$export$8f00fc776af848de extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), core, message, delegate);\n        this.core = core;\n    }\n}\n\n\n\n\n/**\n * Subscription state.\n * @remarks\n * https://tools.ietf.org/html/rfc6665#section-4.1.2\n * @public\n */ var $228300638ee3e578$export$3eb358ec30f826ce;\n(function(SubscriptionState) {\n    SubscriptionState[\"Initial\"] = \"Initial\";\n    SubscriptionState[\"NotifyWait\"] = \"NotifyWait\";\n    SubscriptionState[\"Pending\"] = \"Pending\";\n    SubscriptionState[\"Active\"] = \"Active\";\n    SubscriptionState[\"Terminated\"] = \"Terminated\";\n})($228300638ee3e578$export$3eb358ec30f826ce = $228300638ee3e578$export$3eb358ec30f826ce || ($228300638ee3e578$export$3eb358ec30f826ce = {}));\n\n\n\n\n\n\n\n\nclass $bede16431f3e462e$export$c30ba9854f9c2b03 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(dialog, delegate, options){\n        const message = dialog.createOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).SUBSCRIBE, options);\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), dialog.userAgentCore, message, delegate);\n        this.dialog = dialog;\n    }\n    waitNotifyStop() {\n        // TODO: Placeholder. Not utilized currently.\n        return;\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */ receiveResponse(message) {\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (this.dialog.subscriptionExpires > subscriptionExpiresReceived) this.dialog.subscriptionExpires = subscriptionExpiresReceived;\n            }\n        }\n        if (message.statusCode && message.statusCode >= 400 && message.statusCode < 700) {\n            // If a SUBSCRIBE request to refresh a subscription receives a 404, 405,\n            // 410, 416, 480-485, 489, 501, or 604 response, the subscriber MUST\n            // consider the subscription terminated.  (See [RFC5057] for further\n            // details and notes about the effect of error codes on dialogs and\n            // usages within dialog, such as subscriptions).  If the subscriber\n            // wishes to re-subscribe to the state, he does so by composing an\n            // unrelated initial SUBSCRIBE request with a freshly generated Call-ID\n            // and a new, unique \"From\" tag (see Section 4.1.2.1).\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n            const errorCodes = [\n                404,\n                405,\n                410,\n                416,\n                480,\n                481,\n                482,\n                483,\n                484,\n                485,\n                489,\n                501,\n                604\n            ];\n            if (errorCodes.includes(message.statusCode)) this.dialog.terminate();\n        // If a SUBSCRIBE request to refresh a subscription fails with any error\n        // code other than those listed above, the original subscription is\n        // still considered valid for the duration of the most recently known\n        // \"Expires\" value as negotiated by the most recent successful SUBSCRIBE\n        // transaction, or as communicated by a NOTIFY request in its\n        // \"Subscription-State\" header field \"expires\" parameter.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n        }\n        super.receiveResponse(message);\n    }\n}\n\n\n\nclass $0458690b5a556a0b$export$78610d8515ef16f8 extends (0, $a6e6fbcb3e59f89d$export$3ddf2d174ce01153) {\n    constructor(subscriptionEvent, subscriptionExpires, subscriptionState, core, state, delegate){\n        super(core, state);\n        this.delegate = delegate;\n        this._autoRefresh = false;\n        this._subscriptionEvent = subscriptionEvent;\n        this._subscriptionExpires = subscriptionExpires;\n        this._subscriptionExpiresInitial = subscriptionExpires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        this._subscriptionRefresh = undefined;\n        this._subscriptionRefreshLastSet = undefined;\n        this._subscriptionState = subscriptionState;\n        this.logger = core.loggerFactory.getLogger(\"sip.subscribe-dialog\");\n        this.logger.log(`SUBSCRIBE dialog ${this.id} constructed`);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */ static initialDialogStateForSubscription(outgoingSubscribeRequestMessage, incomingNotifyRequestMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingNotifyRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingNotifyRequestMessage.parseHeader(\"contact\");\n        if (!contact) // TODO: Review to make sure this will never happen\n        throw new Error(\"Contact undefined.\");\n        if (!(contact instanceof (0, $b62549b966a08c5b$export$426a8f49e69dc5fe))) throw new Error(\"Contact not instance of NameAddrHeader.\");\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingSubscribeRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingSubscribeRequestMessage.callId;\n        const localTag = outgoingSubscribeRequestMessage.fromTag;\n        const remoteTag = incomingNotifyRequestMessage.fromTag;\n        if (!callId) // TODO: Review to make sure this will never happen\n        throw new Error(\"Call id undefined.\");\n        if (!localTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"From tag undefined.\");\n        if (!remoteTag) // TODO: Review to make sure this will never happen\n        throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingSubscribeRequestMessage.from) // TODO: Review to make sure this will never happen\n        throw new Error(\"From undefined.\");\n        if (!outgoingSubscribeRequestMessage.to) // TODO: Review to make sure this will never happen\n        throw new Error(\"To undefined.\");\n        const localURI = outgoingSubscribeRequestMessage.from.uri;\n        const remoteURI = outgoingSubscribeRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        const early = false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early: early,\n            callId: callId,\n            localTag: localTag,\n            remoteTag: remoteTag,\n            localSequenceNumber: localSequenceNumber,\n            remoteSequenceNumber: remoteSequenceNumber,\n            localURI: localURI,\n            remoteURI: remoteURI,\n            remoteTarget: remoteTarget,\n            routeSet: routeSet,\n            secure: secure\n        };\n        return dialogState;\n    }\n    dispose() {\n        super.dispose();\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        this.refreshTimerClear();\n        this.logger.log(`SUBSCRIBE dialog ${this.id} destroyed`);\n    }\n    get autoRefresh() {\n        return this._autoRefresh;\n    }\n    set autoRefresh(autoRefresh) {\n        this._autoRefresh = true;\n        this.refreshTimerSet();\n    }\n    get subscriptionEvent() {\n        return this._subscriptionEvent;\n    }\n    /** Number of seconds until subscription expires. */ get subscriptionExpires() {\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionExpiresLastSet;\n        const secondsUntilExpires = this._subscriptionExpires - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    set subscriptionExpires(expires) {\n        if (expires < 0) throw new Error(\"Expires must be greater than or equal to zero.\");\n        this._subscriptionExpires = expires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        if (this.autoRefresh) {\n            const refresh = this.subscriptionRefresh;\n            if (refresh === undefined || refresh >= expires) this.refreshTimerSet();\n        }\n    }\n    get subscriptionExpiresInitial() {\n        return this._subscriptionExpiresInitial;\n    }\n    /** Number of seconds until subscription auto refresh. */ get subscriptionRefresh() {\n        if (this._subscriptionRefresh === undefined || this._subscriptionRefreshLastSet === undefined) return undefined;\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionRefreshLastSet;\n        const secondsUntilExpires = this._subscriptionRefresh - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    get subscriptionState() {\n        return this._subscriptionState;\n    }\n    /**\n     * Receive in dialog request message from transport.\n     * @param message -  The incoming request message.\n     */ receiveRequest(message) {\n        this.logger.log(`SUBSCRIBE dialog ${this.id} received ${message.method} request`);\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`SUBSCRIBE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Switch on method and then delegate.\n        switch(message.method){\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY:\n                this.onNotify(message);\n                break;\n            default:\n                this.logger.log(`SUBSCRIBE dialog ${this.id} received unimplemented ${message.method} request`);\n                this.core.replyStateless(message, {\n                    statusCode: 501\n                });\n                break;\n        }\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */ refresh() {\n        const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: \" + this.subscriptionExpiresInitial);\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     * @param delegate - Delegate to handle responses.\n     * @param options - Options bucket.\n     */ subscribe(delegate, options = {}) {\n        var _a;\n        if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) // FIXME: This needs to be a proper exception\n        throw new Error(`Invalid state ${this.subscriptionState}. May only re-subscribe while in state \"pending\" or \"active\".`);\n        this.logger.log(`SUBSCRIBE dialog ${this.id} sending SUBSCRIBE request`);\n        const uac = new (0, $bede16431f3e462e$export$c30ba9854f9c2b03)(this, delegate, options);\n        // Abort any outstanding timer (as it would otherwise become guaranteed to terminate us).\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        if (!((_a = options.extraHeaders) === null || _a === void 0 ? void 0 : _a.includes(\"Expires: 0\"))) // When refreshing a subscription, a subscriber starts Timer N, set to\n        // 64*T1, when it sends the SUBSCRIBE request.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n        this.N = setTimeout(()=>this.timerN(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_N);\n        return uac;\n    }\n    /**\n     * 4.4.1.  Dialog Creation and Termination\n     * A subscription is destroyed after a notifier sends a NOTIFY request\n     * with a \"Subscription-State\" of \"terminated\", or in certain error\n     * situations described elsewhere in this document.\n     * https://tools.ietf.org/html/rfc6665#section-4.4.1\n     */ terminate() {\n        this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated);\n        this.onTerminated();\n    }\n    /**\n     * 4.1.2.3.  Unsubscribing\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.3\n     */ unsubscribe() {\n        const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: 0\");\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * Handle in dialog NOTIFY requests.\n     * This does not include the first NOTIFY which created the dialog.\n     * @param message - The incoming NOTIFY request message.\n     */ onNotify(message) {\n        // If, for some reason, the event package designated in the \"Event\"\n        // header field of the NOTIFY request is not supported, the subscriber\n        // will respond with a 489 (Bad Event) response.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const event = message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.core.replyStateless(message, {\n                statusCode: 489\n            });\n            return;\n        }\n        // In the state diagram, \"Re-subscription times out\" means that an\n        // attempt to refresh or update the subscription using a new SUBSCRIBE\n        // request does not result in a NOTIFY request before the corresponding\n        // Timer N expires.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.core.replyStateless(message, {\n                statusCode: 489\n            });\n            return;\n        }\n        const state = subscriptionState.state;\n        const expires = subscriptionState.expires ? Math.max(subscriptionState.expires, 0) : undefined;\n        // Update our state and expiration.\n        switch(state){\n            case \"pending\":\n                this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Pending, expires);\n                break;\n            case \"active\":\n                this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Active, expires);\n                break;\n            case \"terminated\":\n                this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated, expires);\n                break;\n            default:\n                this.logger.warn(\"Unrecognized subscription state.\");\n                break;\n        }\n        // Delegate remainder of NOTIFY handling.\n        const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n        if (this.delegate && this.delegate.onNotify) this.delegate.onNotify(uas);\n        else uas.accept();\n    }\n    onRefresh(request) {\n        if (this.delegate && this.delegate.onRefresh) this.delegate.onRefresh(request);\n    }\n    onTerminated() {\n        if (this.delegate && this.delegate.onTerminated) this.delegate.onTerminated();\n    }\n    refreshTimerClear() {\n        if (this.refreshTimer) {\n            clearTimeout(this.refreshTimer);\n            this.refreshTimer = undefined;\n        }\n    }\n    refreshTimerSet() {\n        this.refreshTimerClear();\n        if (this.autoRefresh && this.subscriptionExpires > 0) {\n            const refresh = this.subscriptionExpires * 900;\n            this._subscriptionRefresh = Math.floor(refresh / 1000);\n            this._subscriptionRefreshLastSet = Math.floor(Date.now() / 1000);\n            this.refreshTimer = setTimeout(()=>{\n                this.refreshTimer = undefined;\n                this._subscriptionRefresh = undefined;\n                this._subscriptionRefreshLastSet = undefined;\n                this.onRefresh(this.refresh());\n            }, refresh);\n        }\n    }\n    stateTransition(newState, newExpires) {\n        // Assert valid state transitions.\n        const invalidStateTransition = ()=>{\n            this.logger.warn(`Invalid subscription state transition from ${this.subscriptionState} to ${newState}`);\n        };\n        switch(newState){\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Initial:\n                invalidStateTransition();\n                return;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait:\n                invalidStateTransition();\n                return;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending:\n                if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Active:\n                if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated:\n                if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending && this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            default:\n                invalidStateTransition();\n                return;\n        }\n        // If the \"Subscription-State\" value is \"pending\", the subscription has\n        // been received by the notifier, but there is insufficient policy\n        // information to grant or deny the subscription yet.  If the header\n        // field also contains an \"expires\" parameter, the subscriber SHOULD\n        // take it as the authoritative subscription duration and adjust\n        // accordingly.  No further action is necessary on the part of the\n        // subscriber.  The \"retry-after\" and \"reason\" parameters have no\n        // semantics for \"pending\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending) {\n            if (newExpires) this.subscriptionExpires = newExpires;\n        }\n        // If the \"Subscription-State\" header field value is \"active\", it means\n        // that the subscription has been accepted and (in general) has been\n        // authorized.  If the header field also contains an \"expires\"\n        // parameter, the subscriber SHOULD take it as the authoritative\n        // subscription duration and adjust accordingly.  The \"retry-after\" and\n        // \"reason\" parameters have no semantics for \"active\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === (0, $228300638ee3e578$export$3eb358ec30f826ce).Active) {\n            if (newExpires) this.subscriptionExpires = newExpires;\n        }\n        // If the \"Subscription-State\" value is \"terminated\", the subscriber\n        // MUST consider the subscription terminated.  The \"expires\" parameter\n        // has no semantics for \"terminated\" -- notifiers SHOULD NOT include an\n        // \"expires\" parameter on a \"Subscription-State\" header field with a\n        // value of \"terminated\", and subscribers MUST ignore any such\n        // parameter, if present.\n        if (newState === (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated) this.dispose();\n        this._subscriptionState = newState;\n    }\n    /**\n     * When refreshing a subscription, a subscriber starts Timer N, set to\n     * 64*T1, when it sends the SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription terminated.  If the subscriber receives a success\n     * response to the SUBSCRIBE request that indicates that no NOTIFY\n     * request will be generated -- such as the 204 response defined for use\n     * with the optional extension described in [RFC5839] -- then it MUST\n     * cancel Timer N.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */ timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE dialog. Timed out waiting for NOTIFY.`);\n        if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated) {\n            this.stateTransition((0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated);\n            this.onTerminated();\n        }\n    }\n}\n\n\n\n\n\n\nclass $4bba609974ceb444$export$45d1cd6695d95e68 extends (0, $2197579a8ac6d9b3$export$7c212e7e192429f3) {\n    constructor(core, message, delegate){\n        // Get event from request message.\n        const event = message.getHeader(\"Event\");\n        if (!event) throw new Error(\"Event undefined\");\n        // Get expires from request message.\n        const expires = message.getHeader(\"Expires\");\n        if (!expires) throw new Error(\"Expires undefined\");\n        super((0, $de2fac6d73c31956$export$56b95907db972eed), core, message, delegate);\n        this.delegate = delegate;\n        // FIXME: Subscriber id should also be matching on event id.\n        this.subscriberId = message.callId + message.fromTag + event;\n        this.subscriptionExpiresRequested = this.subscriptionExpires = Number(expires);\n        this.subscriptionEvent = event;\n        this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).NotifyWait;\n        // Start waiting for a NOTIFY we can use to create a subscription.\n        this.waitNotifyStart();\n    }\n    /**\n     * Destructor.\n     * Note that Timer N may live on waiting for an initial NOTIFY and\n     * the delegate may still receive that NOTIFY. If you don't want\n     * that behavior then either clear the delegate so the delegate\n     * doesn't get called (a 200 will be sent in response to the NOTIFY)\n     * or call `waitNotifyStop` which will clear Timer N and remove this\n     * UAC from the core (a 481 will be sent in response to the NOTIFY).\n     */ dispose() {\n        super.dispose();\n    }\n    /**\n     * Handle out of dialog NOTIFY associated with SUBSCRIBE request.\n     * This is the first NOTIFY received after the SUBSCRIBE request.\n     * @param uas - User agent server handling the subscription creating NOTIFY.\n     */ onNotify(uas) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        const event = uas.message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.logger.warn(`Failed to parse event.`);\n            uas.reject({\n                statusCode: 489\n            });\n            return;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = uas.message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.logger.warn(\"Failed to parse subscription state.\");\n            uas.reject({\n                statusCode: 489\n            });\n            return;\n        }\n        // Validate subscription state.\n        const state = subscriptionState.state;\n        switch(state){\n            case \"pending\":\n                break;\n            case \"active\":\n                break;\n            case \"terminated\":\n                break;\n            default:\n                this.logger.warn(`Invalid subscription state ${state}`);\n                uas.reject({\n                    statusCode: 489\n                });\n                return;\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (state !== \"terminated\") {\n            // The Contact header field MUST be present and contain exactly one SIP\n            // or SIPS URI in any request that can result in the establishment of a\n            // dialog.\n            // https://tools.ietf.org/html/rfc3261#section-8.1.1.8\n            const contact = uas.message.parseHeader(\"contact\");\n            if (!contact) {\n                this.logger.warn(\"Failed to parse contact.\");\n                uas.reject({\n                    statusCode: 489\n                });\n                return;\n            }\n        }\n        // In accordance with the rules for proxying non-INVITE requests as\n        // defined in [RFC3261], successful SUBSCRIBE requests will receive only\n        // one 200-class response; however, due to forking, the subscription may\n        // have been accepted by multiple nodes.  The subscriber MUST therefore\n        // be prepared to receive NOTIFY requests with \"From:\" tags that differ\n        // from the \"To:\" tag received in the SUBSCRIBE 200-class response.\n        //\n        // If multiple NOTIFY requests are received in different dialogs in\n        // response to a single SUBSCRIBE request, each dialog represents a\n        // different destination to which the SUBSCRIBE request was forked.\n        // Subscriber handling in such situations varies by event package; see\n        // Section 5.4.9 for details.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.4\n        // Each event package MUST specify whether forked SUBSCRIBE requests are\n        // allowed to install multiple subscriptions.\n        //\n        // If such behavior is not allowed, the first potential dialog-\n        // establishing message will create a dialog.  All subsequent NOTIFY\n        // requests that correspond to the SUBSCRIBE request (i.e., have\n        // matching \"To\", \"From\", \"Call-ID\", and \"Event\" header fields, as well\n        // as \"From\" header field \"tag\" parameter and \"Event\" header field \"id\"\n        // parameter) but that do not match the dialog would be rejected with a\n        // 481 response.  Note that the 200-class response to the SUBSCRIBE\n        // request can arrive after a matching NOTIFY request has been received;\n        // such responses might not correlate to the same dialog established by\n        // the NOTIFY request.  Except as required to complete the SUBSCRIBE\n        // transaction, such non-matching 200-class responses are ignored.\n        //\n        // If installing of multiple subscriptions by way of a single forked\n        // SUBSCRIBE request is allowed, the subscriber establishes a new dialog\n        // towards each notifier by returning a 200-class response to each\n        // NOTIFY request.  Each dialog is then handled as its own entity and is\n        // refreshed independently of the other dialogs.\n        //\n        // In the case that multiple subscriptions are allowed, the event\n        // package MUST specify whether merging of the notifications to form a\n        // single state is required, and how such merging is to be performed.\n        // Note that it is possible that some event packages may be defined in\n        // such a way that each dialog is tied to a mutually exclusive state\n        // that is unaffected by the other dialogs; this MUST be clearly stated\n        // if it is the case.\n        // https://tools.ietf.org/html/rfc6665#section-5.4.9\n        // *** NOTE: This implementation is only for event packages which\n        // do not allow forked requests to install multiple subscriptions.\n        // As such and in accordance with the specification, we stop waiting\n        // and any future NOTIFY requests will be rejected with a 481.\n        if (this.dialog) throw new Error(\"Dialog already created. This implementation only supports install of single subscriptions.\");\n        this.waitNotifyStop();\n        // Update expires.\n        this.subscriptionExpires = subscriptionState.expires ? Math.min(this.subscriptionExpires, Math.max(subscriptionState.expires, 0)) : this.subscriptionExpires;\n        // Update subscription state.\n        switch(state){\n            case \"pending\":\n                this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).Pending;\n                break;\n            case \"active\":\n                this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).Active;\n                break;\n            case \"terminated\":\n                this.subscriptionState = (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated;\n                break;\n            default:\n                throw new Error(`Unrecognized state ${state}.`);\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (this.subscriptionState !== (0, $228300638ee3e578$export$3eb358ec30f826ce).Terminated) {\n            // Because the dialog usage is established by the NOTIFY request, the\n            // route set at the subscriber is taken from the NOTIFY request itself,\n            // as opposed to the route set present in the 200-class response to the\n            // SUBSCRIBE request.\n            // https://tools.ietf.org/html/rfc6665#section-4.4.1\n            const dialogState = (0, $0458690b5a556a0b$export$78610d8515ef16f8).initialDialogStateForSubscription(this.message, uas.message);\n            // Subscription Initiated! :)\n            this.dialog = new (0, $0458690b5a556a0b$export$78610d8515ef16f8)(this.subscriptionEvent, this.subscriptionExpires, this.subscriptionState, this.core, dialogState);\n        }\n        // Delegate.\n        if (this.delegate && this.delegate.onNotify) {\n            const request = uas;\n            const subscription = this.dialog;\n            this.delegate.onNotify({\n                request: request,\n                subscription: subscription\n            });\n        } else uas.accept();\n    }\n    waitNotifyStart() {\n        if (!this.N) {\n            // Add ourselves to the core's subscriber map.\n            // This allows the core to route out of dialog NOTIFY messages to us.\n            this.core.subscribers.set(this.subscriberId, this);\n            this.N = setTimeout(()=>this.timerN(), (0, $d9c671393334589e$export$8bb2c1fb2b1765a9).TIMER_N);\n        }\n    }\n    waitNotifyStop() {\n        if (this.N) {\n            // Remove ourselves to the core's subscriber map.\n            // Any future out of dialog NOTIFY messages will be rejected with a 481.\n            this.core.subscribers.delete(this.subscriberId);\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */ receiveResponse(message) {\n        if (!this.authenticationGuard(message)) return;\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            // The \"Expires\" values present in SUBSCRIBE 200-class responses behave\n            // in the same way as they do in REGISTER responses: the server MAY\n            // shorten the interval but MUST NOT lengthen it.\n            //\n            //    If the duration specified in a SUBSCRIBE request is unacceptably\n            //    short, the notifier may be able to send a 423 response, as\n            //    described earlier in this section.\n            //\n            // 200-class responses to SUBSCRIBE requests will not generally contain\n            // any useful information beyond subscription duration; their primary\n            // purpose is to serve as a reliability mechanism.  State information\n            // will be communicated via a subsequent NOTIFY request from the\n            // notifier.\n            // https://tools.ietf.org/html/rfc6665#section-4.2.1.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (subscriptionExpiresReceived > this.subscriptionExpiresRequested) this.logger.warn(\"Expires header in a 200-class response to SUBSCRIBE with a higher value than the one in the request\");\n                if (subscriptionExpiresReceived < this.subscriptionExpires) this.subscriptionExpires = subscriptionExpiresReceived;\n            }\n            // If a NOTIFY arrived before 200-class response a dialog may have been created.\n            // Updated the dialogs expiration only if this indicates earlier expiration.\n            if (this.dialog) {\n                if (this.dialog.subscriptionExpires > this.subscriptionExpires) this.dialog.subscriptionExpires = this.subscriptionExpires;\n            }\n        }\n        if (message.statusCode && message.statusCode >= 300 && message.statusCode < 700) this.waitNotifyStop(); // No NOTIFY will be sent after a negative final response.\n        super.receiveResponse(message);\n    }\n    /**\n     * To ensure that subscribers do not wait indefinitely for a\n     * subscription to be established, a subscriber starts a Timer N, set to\n     * 64*T1, when it sends a SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription failed, and cleans up any state associated with the\n     * subscription attempt.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.4\n     */ timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE user agent client. Timed out waiting for NOTIFY.`);\n        this.waitNotifyStop();\n        if (this.delegate && this.delegate.onNotifyTimeout) this.delegate.onNotifyTimeout();\n    }\n}\n\n\n\n\nclass $13935786c397e9a0$export$1ee39f2f53fb8a20 extends (0, $22662cbf0aefade3$export$b027d5103a9e8145) {\n    constructor(core, message, delegate){\n        super((0, $0cbd58c5a3fb42c8$export$df10dc20c866a1e6), core, message, delegate);\n        this.core = core;\n    }\n}\n\n\n\n\n/**\n * This is ported from UA.C.ACCEPTED_BODY_TYPES.\n * FIXME: TODO: Should be configurable/variable.\n */ const $977f1c19544cd05f$var$acceptedBodyTypes = [\n    \"application/sdp\",\n    \"application/dtmf-relay\"\n];\nclass $977f1c19544cd05f$export$1f818b2e62a6351e {\n    /**\n     * Constructor.\n     * @param configuration - Configuration.\n     * @param delegate - Delegate.\n     */ constructor(configuration, delegate = {}){\n        /** UACs. */ this.userAgentClients = new Map();\n        /** UASs. */ this.userAgentServers = new Map();\n        this.configuration = configuration;\n        this.delegate = delegate;\n        this.dialogs = new Map();\n        this.subscribers = new Map();\n        this.logger = configuration.loggerFactory.getLogger(\"sip.user-agent-core\");\n    }\n    /** Destructor. */ dispose() {\n        this.reset();\n    }\n    /** Reset. */ reset() {\n        this.dialogs.forEach((dialog)=>dialog.dispose());\n        this.dialogs.clear();\n        this.subscribers.forEach((subscriber)=>subscriber.dispose());\n        this.subscribers.clear();\n        this.userAgentClients.forEach((uac)=>uac.dispose());\n        this.userAgentClients.clear();\n        this.userAgentServers.forEach((uac)=>uac.dispose());\n        this.userAgentServers.clear();\n    }\n    /** Logger factory. */ get loggerFactory() {\n        return this.configuration.loggerFactory;\n    }\n    /** Transport. */ get transport() {\n        const transport = this.configuration.transportAccessor();\n        if (!transport) throw new Error(\"Transport undefined.\");\n        return transport;\n    }\n    /**\n     * Send INVITE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ invite(request, delegate) {\n        return new (0, $0f92a99d89cb70d4$export$6ca778570a388e6c)(this, request, delegate);\n    }\n    /**\n     * Send MESSAGE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ message(request, delegate) {\n        return new (0, $783e517297d65771$export$3602b2fd01d6e2fe)(this, request, delegate);\n    }\n    /**\n     * Send PUBLISH.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ publish(request, delegate) {\n        return new (0, $b88f78f9f1f05862$export$d7ea912f644d1be1)(this, request, delegate);\n    }\n    /**\n     * Send REGISTER.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ register(request, delegate) {\n        return new (0, $31dbebbbce838c73$export$50216c3f2f5df938)(this, request, delegate);\n    }\n    /**\n     * Send SUBSCRIBE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ subscribe(request, delegate) {\n        return new (0, $4bba609974ceb444$export$45d1cd6695d95e68)(this, request, delegate);\n    }\n    /**\n     * Send a request.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */ request(request, delegate) {\n        return new (0, $2197579a8ac6d9b3$export$7c212e7e192429f3)((0, $de2fac6d73c31956$export$56b95907db972eed), this, request, delegate);\n    }\n    /**\n     * Outgoing request message factory function.\n     * @param method - Method.\n     * @param requestURI - Request-URI.\n     * @param fromURI - From URI.\n     * @param toURI - To URI.\n     * @param options - Request options.\n     * @param extraHeaders - Extra headers to add.\n     * @param body - Message body.\n     */ makeOutgoingRequestMessage(method, requestURI, fromURI, toURI, options, extraHeaders, body) {\n        // default values from user agent configuration\n        const callIdPrefix = this.configuration.sipjsId;\n        const fromDisplayName = this.configuration.displayName;\n        const forceRport = this.configuration.viaForceRport;\n        const hackViaTcp = this.configuration.hackViaTcp;\n        const optionTags = this.configuration.supportedOptionTags.slice();\n        if (method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER) optionTags.push(\"path\", \"gruu\");\n        if (method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE && (this.configuration.contact.pubGruu || this.configuration.contact.tempGruu)) optionTags.push(\"gruu\");\n        const routeSet = this.configuration.routeSet;\n        const userAgentString = this.configuration.userAgentHeaderFieldValue;\n        const viaHost = this.configuration.viaHost;\n        const defaultOptions = {\n            callIdPrefix: callIdPrefix,\n            forceRport: forceRport,\n            fromDisplayName: fromDisplayName,\n            hackViaTcp: hackViaTcp,\n            optionTags: optionTags,\n            routeSet: routeSet,\n            userAgentString: userAgentString,\n            viaHost: viaHost\n        };\n        // merge provided options with default options\n        const requestOptions = Object.assign(Object.assign({}, defaultOptions), options);\n        return new (0, $43c14ea4a1dc0a96$export$f417b2a6a6efd8c3)(method, requestURI, fromURI, toURI, requestOptions, extraHeaders, body);\n    }\n    /**\n     * Handle an incoming request message from the transport.\n     * @param message - Incoming request message from transport layer.\n     */ receiveIncomingRequestFromTransport(message) {\n        this.receiveRequestFromTransport(message);\n    }\n    /**\n     * Handle an incoming response message from the transport.\n     * @param message - Incoming response message from transport layer.\n     */ receiveIncomingResponseFromTransport(message) {\n        this.receiveResponseFromTransport(message);\n    }\n    /**\n     * A stateless UAS is a UAS that does not maintain transaction state.\n     * It replies to requests normally, but discards any state that would\n     * ordinarily be retained by a UAS after a response has been sent.  If a\n     * stateless UAS receives a retransmission of a request, it regenerates\n     * the response and re-sends it, just as if it were replying to the first\n     * instance of the request. A UAS cannot be stateless unless the request\n     * processing for that method would always result in the same response\n     * if the requests are identical. This rules out stateless registrars,\n     * for example.  Stateless UASs do not use a transaction layer; they\n     * receive requests directly from the transport layer and send responses\n     * directly to the transport layer.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.7\n     * @param message - Incoming request message to reply to.\n     * @param statusCode - Status code to reply with.\n     */ replyStateless(message, options) {\n        const userAgent = this.configuration.userAgentHeaderFieldValue;\n        const supported = this.configuration.supportedOptionTagsResponse;\n        options = Object.assign(Object.assign({}, options), {\n            userAgent: userAgent,\n            supported: supported\n        });\n        const response = (0, $fa12ff70cdbe77c4$export$4a2399f09281a6d4)(message, options);\n        this.transport.send(response.message).catch((error)=>{\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful...\n            if (error instanceof Error) this.logger.error(error.message);\n            this.logger.error(`Transport error occurred sending stateless reply to ${message.method} request.`);\n        // TODO: Currently there is no hook to provide notification that a transport error occurred\n        // and throwing would result in an uncaught error (in promise), so we silently eat the error.\n        // Furthermore, silently eating stateless reply transport errors is arguably what we want to do here.\n        });\n        return response;\n    }\n    /**\n     * In Section 18.2.1, replace the last paragraph with:\n     *\n     * Next, the server transport attempts to match the request to a\n     * server transaction.  It does so using the matching rules described\n     * in Section 17.2.3.  If a matching server transaction is found, the\n     * request is passed to that transaction for processing.  If no match\n     * is found, the request is passed to the core, which may decide to\n     * construct a new server transaction for that request.\n     * https://tools.ietf.org/html/rfc6026#section-8.10\n     * @param message - Incoming request message from transport layer.\n     */ receiveRequestFromTransport(message) {\n        // When a request is received from the network by the server, it has to\n        // be matched to an existing transaction.  This is accomplished in the\n        // following manner.\n        //\n        // The branch parameter in the topmost Via header field of the request\n        // is examined.  If it is present and begins with the magic cookie\n        // \"z9hG4bK\", the request was generated by a client transaction\n        // compliant to this specification.  Therefore, the branch parameter\n        // will be unique across all transactions sent by that client.  The\n        // request matches a transaction if:\n        //\n        //    1. the branch parameter in the request is equal to the one in the\n        //       top Via header field of the request that created the\n        //       transaction, and\n        //\n        //    2. the sent-by value in the top Via of the request is equal to the\n        //       one in the request that created the transaction, and\n        //\n        //    3. the method of the request matches the one that created the\n        //       transaction, except for ACK, where the method of the request\n        //       that created the transaction is INVITE.\n        //\n        // This matching rule applies to both INVITE and non-INVITE transactions\n        // alike.\n        //\n        //    The sent-by value is used as part of the matching process because\n        //    there could be accidental or malicious duplication of branch\n        //    parameters from different clients.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.3\n        const transactionId = message.viaBranch; // FIXME: Currently only using rule 1...\n        const uas = this.userAgentServers.get(transactionId);\n        // When receiving an ACK that matches an existing INVITE server\n        // transaction and that does not contain a branch parameter containing\n        // the magic cookie defined in RFC 3261, the matching transaction MUST\n        // be checked to see if it is in the \"Accepted\" state.  If it is, then\n        // the ACK must be passed directly to the transaction user instead of\n        // being absorbed by the transaction state machine.  This is necessary\n        // as requests from RFC 2543 clients will not include a unique branch\n        // parameter, and the mechanisms for calculating the transaction ID from\n        // such a request will be the same for both INVITE and ACKs.\n        // https://tools.ietf.org/html/rfc6026#section-6\n        // Any ACKs received from the network while in the \"Accepted\" state MUST be\n        // passed directly to the TU and not absorbed.\n        // https://tools.ietf.org/html/rfc6026#section-7.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) {\n            if (uas && uas.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Accepted) {\n                if (uas instanceof (0, $f13700957d08a111$export$fcc77d6d1624c472)) {\n                    // These are ACKs matching an INVITE server transaction.\n                    // These should never happen with RFC 3261 compliant user agents\n                    // (would be a broken ACK to negative final response or something)\n                    // but is apparently how RFC 2543 user agents do things.\n                    // We are not currently supporting this case.\n                    // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n                    this.logger.warn(`Discarding out of dialog ACK after 2xx response sent on transaction ${transactionId}.`);\n                    return;\n                }\n            }\n        }\n        // The CANCEL method requests that the TU at the server side cancel a\n        // pending transaction.  The TU determines the transaction to be\n        // cancelled by taking the CANCEL request, and then assuming that the\n        // request method is anything but CANCEL or ACK and applying the\n        // transaction matching procedures of Section 17.2.3.  The matching\n        // transaction is the one to be cancelled.\n        // https://tools.ietf.org/html/rfc3261#section-9.2\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL) {\n            if (uas) {\n                // Regardless of the method of the original request, as long as the\n                // CANCEL matched an existing transaction, the UAS answers the CANCEL\n                // request itself with a 200 (OK) response.\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                this.replyStateless(message, {\n                    statusCode: 200\n                });\n                // If the transaction for the original request still exists, the behavior\n                // of the UAS on receiving a CANCEL request depends on whether it has already\n                // sent a final response for the original request. If it has, the CANCEL\n                // request has no effect on the processing of the original request, no\n                // effect on any session state, and no effect on the responses generated\n                // for the original request. If the UAS has not issued a final response\n                // for the original request, its behavior depends on the method of the\n                // original request. If the original request was an INVITE, the UAS\n                // SHOULD immediately respond to the INVITE with a 487 (Request\n                // Terminated).\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                if (uas.transaction instanceof (0, $81bc4312505cb83e$export$fdc050a01797e9de) && uas.transaction.state === (0, $5a6d2cd8ab50afbe$export$52a28250c602ca8a).Proceeding) {\n                    if (uas instanceof (0, $f13700957d08a111$export$fcc77d6d1624c472)) uas.receiveCancel(message);\n                }\n            } else // If the UAS did not find a matching transaction for the CANCEL\n            // according to the procedure above, it SHOULD respond to the CANCEL\n            // with a 481 (Call Leg/Transaction Does Not Exist).\n            // https://tools.ietf.org/html/rfc3261#section-9.2\n            this.replyStateless(message, {\n                statusCode: 481\n            });\n            return;\n        }\n        // If a matching server transaction is found, the request is passed to that\n        // transaction for processing.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        if (uas) {\n            uas.transaction.receiveRequest(message);\n            return;\n        }\n        // If no match is found, the request is passed to the core, which may decide to\n        // construct a new server transaction for that request.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        this.receiveRequest(message);\n        return;\n    }\n    /**\n     * UAC and UAS procedures depend strongly on two factors.  First, based\n     * on whether the request or response is inside or outside of a dialog,\n     * and second, based on the method of a request.  Dialogs are discussed\n     * thoroughly in Section 12; they represent a peer-to-peer relationship\n     * between user agents and are established by specific SIP methods, such\n     * as INVITE.\n     * @param message - Incoming request message.\n     */ receiveRequest(message) {\n        // 8.2 UAS Behavior\n        // UASs SHOULD process the requests in the order of the steps that\n        // follow in this section (that is, starting with authentication, then\n        // inspecting the method, the header fields, and so on throughout the\n        // remainder of this section).\n        // https://tools.ietf.org/html/rfc3261#section-8.2\n        // 8.2.1 Method Inspection\n        // Once a request is authenticated (or authentication is skipped), the\n        // UAS MUST inspect the method of the request.  If the UAS recognizes\n        // but does not support the method of a request, it MUST generate a 405\n        // (Method Not Allowed) response.  Procedures for generating responses\n        // are described in Section 8.2.6.  The UAS MUST also add an Allow\n        // header field to the 405 (Method Not Allowed) response.  The Allow\n        // header field MUST list the set of methods supported by the UAS\n        // generating the message.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.1\n        if (!(0, $4619cb33ea8b9a88$export$adbfd46aa14386de).includes(message.method)) {\n            const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n            this.replyStateless(message, {\n                statusCode: 405,\n                extraHeaders: [\n                    allowHeader\n                ]\n            });\n            return;\n        }\n        // 8.2.2 Header Inspection\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2\n        if (!message.ruri) // FIXME: A request message should always have an ruri\n        throw new Error(\"Request-URI undefined.\");\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI uses a scheme not supported by the UAS, it SHOULD\n        // reject the request with a 416 (Unsupported URI Scheme) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.ruri.scheme !== \"sip\") {\n            this.replyStateless(message, {\n                statusCode: 416\n            });\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI does not identify an address that the\n        // UAS is willing to accept requests for, it SHOULD reject\n        // the request with a 404 (Not Found) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        const ruri = message.ruri;\n        const ruriMatches = (uri)=>{\n            return !!uri && uri.user === ruri.user;\n        };\n        if (!ruriMatches(this.configuration.aor) && !(ruriMatches(this.configuration.contact.uri) || ruriMatches(this.configuration.contact.pubGruu) || ruriMatches(this.configuration.contact.tempGruu))) {\n            this.logger.warn(\"Request-URI does not point to us.\");\n            if (message.method !== (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) this.replyStateless(message, {\n                statusCode: 404\n            });\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // Other potential sources of received Request-URIs include\n        // the Contact header fields of requests and responses sent by the UA\n        // that establish or refresh dialogs.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE) {\n            if (!message.hasHeader(\"Contact\")) {\n                this.replyStateless(message, {\n                    statusCode: 400,\n                    reasonPhrase: \"Missing Contact Header\"\n                });\n                return;\n            }\n        }\n        // 8.2.2.2 Merged Requests\n        // If the request has no tag in the To header field, the UAS core MUST\n        // check the request against ongoing transactions.  If the From tag,\n        // Call-ID, and CSeq exactly match those associated with an ongoing\n        // transaction, but the request does not match that transaction (based\n        // on the matching rules in Section 17.2.3), the UAS core SHOULD\n        // generate a 482 (Loop Detected) response and pass it to the server\n        // transaction.\n        //\n        //    The same request has arrived at the UAS more than once, following\n        //    different paths, most likely due to forking.  The UAS processes\n        //    the first such request received and responds with a 482 (Loop\n        //    Detected) to the rest of them.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.2\n        if (!message.toTag) {\n            const transactionId = message.viaBranch;\n            if (!this.userAgentServers.has(transactionId)) {\n                const mergedRequest = Array.from(this.userAgentServers.values()).some((uas)=>uas.transaction.request.fromTag === message.fromTag && uas.transaction.request.callId === message.callId && uas.transaction.request.cseq === message.cseq);\n                if (mergedRequest) {\n                    this.replyStateless(message, {\n                        statusCode: 482\n                    });\n                    return;\n                }\n            }\n        }\n        // 8.2.2.3 Require\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.3\n        // TODO\n        // 8.2.3 Content Processing\n        // https://tools.ietf.org/html/rfc3261#section-8.2.3\n        // TODO\n        // 8.2.4 Applying Extensions\n        // https://tools.ietf.org/html/rfc3261#section-8.2.4\n        // TODO\n        // 8.2.5 Processing the Request\n        // Assuming all of the checks in the previous subsections are passed,\n        // the UAS processing becomes method-specific.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.5\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // In that case, the UAS first applies the same processing rules for\n        // requests outside of a dialog, discussed in Section 8.2.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (message.toTag) this.receiveInsideDialogRequest(message);\n        else this.receiveOutsideDialogRequest(message);\n        return;\n    }\n    /**\n     * Once a dialog has been established between two UAs, either of them\n     * MAY initiate new transactions as needed within the dialog.  The UA\n     * sending the request will take the UAC role for the transaction.  The\n     * UA receiving the request will take the UAS role.  Note that these may\n     * be different roles than the UAs held during the transaction that\n     * established the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2\n     * @param message - Incoming request message.\n     */ receiveInsideDialogRequest(message) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY) {\n            const event = message.parseHeader(\"Event\");\n            if (!event || !event.event) {\n                this.replyStateless(message, {\n                    statusCode: 489\n                });\n                return;\n            }\n            // FIXME: Subscriber id should also matching on event id.\n            const subscriberId = message.callId + message.toTag + event.event;\n            const subscriber = this.subscribers.get(subscriberId);\n            if (subscriber) {\n                const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n                subscriber.onNotify(uas);\n                return;\n            }\n        }\n        // Requests sent within a dialog, as any other requests, are atomic.  If\n        // a particular request is accepted by the UAS, all the state changes\n        // associated with it are performed.  If the request is rejected, none\n        // of the state changes are performed.\n        //\n        //    Note that some requests, such as INVITEs, affect several pieces of\n        //    state.\n        //\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        const dialogId = message.callId + message.toTag + message.fromTag;\n        const dialog = this.dialogs.get(dialogId);\n        if (dialog) {\n            // [Sip-implementors] Reg. SIP reinvite, UPDATE and OPTIONS\n            // You got the question right.\n            //\n            // And you got the right answer too. :-)\n            //\n            //   Thanks,\n            //   Paul\n            //\n            // Robert Sparks wrote:\n            // > So I've lost track of the question during the musing.\n            // >\n            // > I _think_ the fundamental question being asked is this:\n            // >\n            // > Is an endpoint required to reject (with a 481) an OPTIONS request that\n            // > arrives with at to-tag but does not match any existing dialog state.\n            // > (Assuming some earlier requirement hasn't forced another error code). Or\n            // > is it OK if it just sends\n            // > a 200 OK anyhow.\n            // >\n            // > My take on the collection of specs is that its _not_ ok for it to send\n            // > the 200 OK anyhow and that it is required to send\n            // > the 481. I base this primarily on these sentences from 11.2 in 3261:\n            // >\n            // >    The response to an OPTIONS is constructed using the standard rules\n            // >    for a SIP response as discussed in Section 8.2.6.  The response code\n            // >    chosen MUST be the same that would have been chosen had the request\n            // >    been an INVITE.\n            // >\n            // > Did I miss the point of the question?\n            // >\n            // > On May 15, 2008, at 12:48 PM, Paul Kyzivat wrote:\n            // >\n            // >> [Including Robert in hopes of getting his insight on this.]\n            // https://lists.cs.columbia.edu/pipermail/sip-implementors/2008-May/019178.html\n            //\n            // Requests that do not change in any way the state of a dialog may be\n            // received within a dialog (for example, an OPTIONS request).  They are\n            // processed as if they had been received outside the dialog.\n            // https://tools.ietf.org/html/rfc3261#section-12.2.2\n            if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).OPTIONS) {\n                const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n                const acceptHeader = \"Accept: \" + $977f1c19544cd05f$var$acceptedBodyTypes.toString();\n                this.replyStateless(message, {\n                    statusCode: 200,\n                    extraHeaders: [\n                        allowHeader,\n                        acceptHeader\n                    ]\n                });\n                return;\n            }\n            // Pass the incoming request to the dialog for further handling.\n            dialog.receiveRequest(message);\n            return;\n        }\n        // The most important behaviors of a stateless UAS are the following:\n        // ...\n        // o  A stateless UAS MUST ignore ACK requests.\n        // ...\n        // https://tools.ietf.org/html/rfc3261#section-8.2.7\n        if (message.method === (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK) // If a final response to an INVITE was sent statelessly,\n        // the corresponding ACK:\n        // - will not match an existing transaction\n        // - may have tag in the To header field\n        // - not not match any existing dialogs\n        // Absorb unmatched ACKs.\n        return;\n        // If the request has a tag in the To header field, but the dialog\n        // identifier does not match any existing dialogs, the UAS may have\n        // crashed and restarted, or it may have received a request for a\n        // different (possibly failed) UAS (the UASs can construct the To tags\n        // so that a UAS can identify that the tag was for a UAS for which it is\n        // providing recovery).  Another possibility is that the incoming\n        // request has been simply mis-routed.  Based on the To tag, the UAS MAY\n        // either accept or reject the request.  Accepting the request for\n        // acceptable To tags provides robustness, so that dialogs can persist\n        // even through crashes.  UAs wishing to support this capability must\n        // take into consideration some issues such as choosing monotonically\n        // increasing CSeq sequence numbers even across reboots, reconstructing\n        // the route set, and accepting out-of-range RTP timestamps and sequence\n        // numbers.\n        //\n        // If the UAS wishes to reject the request because it does not wish to\n        // recreate the dialog, it MUST respond to the request with a 481\n        // (Call/Transaction Does Not Exist) status code and pass that to the\n        // server transaction.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        this.replyStateless(message, {\n            statusCode: 481\n        });\n        return;\n    }\n    /**\n     * Assuming all of the checks in the previous subsections are passed,\n     * the UAS processing becomes method-specific.\n     *  https://tools.ietf.org/html/rfc3261#section-8.2.5\n     * @param message - Incoming request message.\n     */ receiveOutsideDialogRequest(message) {\n        switch(message.method){\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).ACK:\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).BYE:\n                // If the BYE does not match an existing dialog, the UAS core SHOULD\n                // generate a 481 (Call/Transaction Does Not Exist) response and pass\n                // that to the server transaction. This rule means that a BYE sent\n                // without tags by a UAC will be rejected.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                this.replyStateless(message, {\n                    statusCode: 481\n                });\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).CANCEL:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO:\n                // Use of the INFO method does not constitute a separate dialog usage.\n                // INFO messages are always part of, and share the fate of, an invite\n                // dialog usage [RFC5057].  INFO messages cannot be sent as part of\n                // other dialog usages, or outside an existing dialog.\n                // https://tools.ietf.org/html/rfc6086#section-1\n                this.replyStateless(message, {\n                    statusCode: 405\n                }); // Should never happen\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INVITE:\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1\n                {\n                    const uas = new (0, $f13700957d08a111$export$fcc77d6d1624c472)(this, message);\n                    this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).MESSAGE:\n                // MESSAGE requests are discouraged inside a dialog.  Implementations\n                // are restricted from creating a usage for the purpose of carrying a\n                // sequence of MESSAGE requests (though some implementations use it that\n                // way, against the standard recommendation).\n                // https://tools.ietf.org/html/rfc5057#section-5.3\n                {\n                    const uas = new (0, $08a363fd15b101f9$export$5c5e9b9267eb32a0)(this, message);\n                    this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).NOTIFY:\n                // Obsoleted by: RFC 6665\n                // If any non-SUBSCRIBE mechanisms are defined to create subscriptions,\n                // it is the responsibility of the parties defining those mechanisms to\n                // ensure that correlation of a NOTIFY message to the corresponding\n                // subscription is possible.  Designers of such mechanisms are also\n                // warned to make a distinction between sending a NOTIFY message to a\n                // subscriber who is aware of the subscription, and sending a NOTIFY\n                // message to an unsuspecting node.  The latter behavior is invalid, and\n                // MUST receive a \"481 Subscription does not exist\" response (unless\n                // some other 400- or 500-class error code is more applicable), as\n                // described in section 3.2.4.  In other words, knowledge of a\n                // subscription must exist in both the subscriber and the notifier to be\n                // valid, even if installed via a non-SUBSCRIBE mechanism.\n                // https://tools.ietf.org/html/rfc3265#section-3.2\n                //\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                {\n                    const uas = new (0, $f5249c700e8ff4ea$export$ab41001c00baeb2c)(this, message);\n                    this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.reject({\n                        statusCode: 405\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).OPTIONS:\n                // https://tools.ietf.org/html/rfc3261#section-11.2\n                {\n                    const allowHeader = \"Allow: \" + (0, $4619cb33ea8b9a88$export$adbfd46aa14386de).toString();\n                    const acceptHeader = \"Accept: \" + $977f1c19544cd05f$var$acceptedBodyTypes.toString();\n                    this.replyStateless(message, {\n                        statusCode: 200,\n                        extraHeaders: [\n                            allowHeader,\n                            acceptHeader\n                        ]\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new (0, $61a4eb8bc96512de$export$dac239e67229cfb6)(this, message);\n                    this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject({\n                        statusCode: 405\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).REGISTER:\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                {\n                    const uas = new (0, $255bb24940d3e795$export$8f00fc776af848de)(this, message);\n                    this.delegate.onRegister ? this.delegate.onRegister(uas) : uas.reject({\n                        statusCode: 405\n                    });\n                }\n                break;\n            case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).SUBSCRIBE:\n                // https://tools.ietf.org/html/rfc6665#section-4.2\n                {\n                    const uas = new (0, $13935786c397e9a0$export$1ee39f2f53fb8a20)(this, message);\n                    this.delegate.onSubscribe ? this.delegate.onSubscribe(uas) : uas.reject({\n                        statusCode: 480\n                    });\n                }\n                break;\n            default:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n        }\n        return;\n    }\n    /**\n     * Responses are first processed by the transport layer and then passed\n     * up to the transaction layer.  The transaction layer performs its\n     * processing and then passes the response up to the TU.  The majority\n     * of response processing in the TU is method specific.  However, there\n     * are some general behaviors independent of the method.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3\n     * @param message - Incoming response message from transport layer.\n     */ receiveResponseFromTransport(message) {\n        // 8.1.3.1 Transaction Layer Errors\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // Handled by transaction layer callbacks.\n        // 8.1.3.2 Unrecognized Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // TODO\n        // 8.1.3.3 Vias\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.3\n        if (message.getHeaders(\"via\").length > 1) {\n            this.logger.warn(\"More than one Via header field present in the response, dropping\");\n            return;\n        }\n        // 8.1.3.4 Processing 3xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.4\n        // TODO\n        // 8.1.3.5 Processing 4xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        // TODO\n        // When the transport layer in the client receives a response, it has to\n        // determine which client transaction will handle the response, so that\n        // the processing of Sections 17.1.1 and 17.1.2 can take place.  The\n        // branch parameter in the top Via header field is used for this\n        // purpose.  A response matches a client transaction under two\n        // conditions:\n        //\n        //    1.  If the response has the same value of the branch parameter in\n        //        the top Via header field as the branch parameter in the top\n        //        Via header field of the request that created the transaction.\n        //\n        //    2.  If the method parameter in the CSeq header field matches the\n        //        method of the request that created the transaction.  The\n        //        method is needed since a CANCEL request constitutes a\n        //        different transaction, but shares the same value of the branch\n        //        parameter.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.3\n        const userAgentClientId = message.viaBranch + message.method;\n        const userAgentClient = this.userAgentClients.get(userAgentClientId);\n        // The client transport uses the matching procedures of Section\n        // 17.1.3 to attempt to match the response to an existing\n        // transaction.  If there is a match, the response MUST be passed to\n        // that transaction.  Otherwise, any element other than a stateless\n        // proxy MUST silently discard the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.9\n        if (userAgentClient) userAgentClient.transaction.receiveResponse(message);\n        else this.logger.warn(`Discarding unmatched ${message.statusCode} response to ${message.method} ${userAgentClientId}.`);\n    }\n}\n\n\n\n\nvar $9cf814dc8665aa70$exports = {};\n\n$parcel$export($9cf814dc8665aa70$exports, \"Transport\", () => $9cf814dc8665aa70$export$86495b081fef8e52);\n\n\nclass $bf477f57ab193740$export$318864ff8d108164 extends (0, $a1cbd1d3dcba43ab$export$e2f174de097e0bcd) {\n    constructor(message){\n        super(message ? message : \"An error occurred during state transition.\");\n    }\n}\n\n\n/**\n * {@link Transport} state.\n *\n * @remarks\n * The {@link Transport} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                    ______________________________\n *                   |    ____________              |\n * Transport         v   v            |             |\n * Constructed -> Disconnected -> Connecting -> Connected -> Disconnecting\n *                     ^            ^    |_____________________^  |  |\n *                     |            |_____________________________|  |\n *                     |_____________________________________________|\n * ```\n * @public\n */ var $d7bd026653891694$export$4157d41c66f4c7e1;\n(function(TransportState) {\n    /**\n     * The `connect()` method was called.\n     */ TransportState[\"Connecting\"] = \"Connecting\";\n    /**\n     * The `connect()` method resolved.\n     */ TransportState[\"Connected\"] = \"Connected\";\n    /**\n     * The `disconnect()` method was called.\n     */ TransportState[\"Disconnecting\"] = \"Disconnecting\";\n    /**\n     * The `connect()` method was rejected, or\n     * the `disconnect()` method completed, or\n     * network connectivity was lost.\n     */ TransportState[\"Disconnected\"] = \"Disconnected\";\n})($d7bd026653891694$export$4157d41c66f4c7e1 = $d7bd026653891694$export$4157d41c66f4c7e1 || ($d7bd026653891694$export$4157d41c66f4c7e1 = {}));\n\n\n\nclass $9cf814dc8665aa70$export$86495b081fef8e52 {\n    constructor(logger, options){\n        this._state = (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected;\n        this.transitioningState = false;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // logger\n        this.logger = logger;\n        // guard deprecated options (remove this in version 16.x)\n        if (options) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = options;\n            const wsServersDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.wsServers;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.maxReconnectionAttempts;\n            if (wsServersDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"wsServers\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (wsServersDeprecated && !options.server) {\n                if (typeof wsServersDeprecated === \"string\") options.server = wsServersDeprecated;\n                if (wsServersDeprecated instanceof Array) options.server = wsServersDeprecated[0];\n            }\n        }\n        // initialize configuration\n        this.configuration = Object.assign(Object.assign({}, $9cf814dc8665aa70$export$86495b081fef8e52.defaultOptions), options);\n        // validate server URL\n        const url = this.configuration.server;\n        const parsed = (0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(url, \"absoluteURI\");\n        if (parsed === -1) {\n            this.logger.error(`Invalid WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid WebSocket Server URL\");\n        }\n        if (![\n            \"wss\",\n            \"ws\",\n            \"udp\"\n        ].includes(parsed.scheme)) {\n            this.logger.error(`Invalid scheme in WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid scheme in WebSocket Server URL\");\n        }\n        this._protocol = parsed.scheme.toUpperCase();\n    }\n    dispose() {\n        return this.disconnect();\n    }\n    /**\n     * The protocol.\n     *\n     * @remarks\n     * Formatted as defined for the Via header sent-protocol transport.\n     * https://tools.ietf.org/html/rfc3261#section-20.42\n     */ get protocol() {\n        return this._protocol;\n    }\n    /**\n     * The URL of the WebSocket Server.\n     */ get server() {\n        return this.configuration.server;\n    }\n    /**\n     * Transport state.\n     */ get state() {\n        return this._state;\n    }\n    /**\n     * Transport state change emitter.\n     */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The WebSocket.\n     */ get ws() {\n        return this._ws;\n    }\n    /**\n     * Connect to network.\n     * Resolves once connected. Otherwise rejects with an Error.\n     */ connect() {\n        return this._connect();\n    }\n    /**\n     * Disconnect from network.\n     * Resolves once disconnected. Otherwise rejects with an Error.\n     */ disconnect() {\n        return this._disconnect();\n    }\n    /**\n     * Returns true if the `state` equals \"Connected\".\n     * @remarks\n     * This is equivalent to `state === TransportState.Connected`.\n     */ isConnected() {\n        return this.state === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected;\n    }\n    /**\n     * Sends a message.\n     * Resolves once message is sent. Otherwise rejects with an Error.\n     * @param message - Message to send.\n     */ send(message) {\n        // Error handling is independent of whether the message was a request or\n        // response.\n        //\n        // If the transport user asks for a message to be sent over an\n        // unreliable transport, and the result is an ICMP error, the behavior\n        // depends on the type of ICMP error.  Host, network, port or protocol\n        // unreachable errors, or parameter problem errors SHOULD cause the\n        // transport layer to inform the transport user of a failure in sending.\n        // Source quench and TTL exceeded ICMP errors SHOULD be ignored.\n        //\n        // If the transport user asks for a request to be sent over a reliable\n        // transport, and the result is a connection failure, the transport\n        // layer SHOULD inform the transport user of a failure in sending.\n        // https://tools.ietf.org/html/rfc3261#section-18.4\n        return this._send(message);\n    }\n    _connect() {\n        this.logger.log(`Connecting ${this.server}`);\n        switch(this.state){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                // If `state` is \"Connecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting));\n                if (!this.connectPromise) throw new Error(\"Connect promise must be defined.\");\n                return this.connectPromise; // Already connecting\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                // If `state` is \"Connected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting));\n                if (this.connectPromise) throw new Error(\"Connect promise must not be defined.\");\n                return Promise.resolve(); // Already connected\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) throw new Error(\"Connect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                // If `state` is \"Disconnected\" `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) throw new Error(\"Connect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        let ws;\n        try {\n            // WebSocket()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/WebSocket\n            ws = new WebSocket(this.server, \"sip\");\n            ws.binaryType = \"arraybuffer\"; // set data type of received binary messages\n            ws.addEventListener(\"close\", (ev)=>this.onWebSocketClose(ev, ws));\n            ws.addEventListener(\"error\", (ev)=>this.onWebSocketError(ev, ws));\n            ws.addEventListener(\"open\", (ev)=>this.onWebSocketOpen(ev, ws));\n            ws.addEventListener(\"message\", (ev)=>this.onWebSocketMessage(ev, ws));\n            this._ws = ws;\n        } catch (error) {\n            this._ws = undefined;\n            this.logger.error(\"WebSocket construction failed.\");\n            this.logger.error(error.toString());\n            return new Promise((resolve, reject)=>{\n                this.connectResolve = resolve;\n                this.connectReject = reject;\n                // The `state` MUST transition to \"Disconnecting\" or \"Disconnected\" before rejecting\n                this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected, error);\n            });\n        }\n        this.connectPromise = new Promise((resolve, reject)=>{\n            this.connectResolve = resolve;\n            this.connectReject = reject;\n            this.connectTimeout = setTimeout(()=>{\n                this.logger.warn(\"Connect timed out. Exceeded time set in configuration.connectionTimeout: \" + this.configuration.connectionTimeout + \"s.\");\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            }, this.configuration.connectionTimeout * 1000);\n        });\n        return this.connectPromise;\n    }\n    _disconnect() {\n        this.logger.log(`Disconnecting ${this.server}`);\n        switch(this.state){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                // If `state` is \"Connecting\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) throw new Error(\"Disconnect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                // If `state` is \"Connected\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) throw new Error(\"Disconnect promise must not be defined.\");\n                try {\n                    this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting);\n                } catch (e) {\n                    if (e instanceof (0, $bf477f57ab193740$export$318864ff8d108164)) return Promise.reject(e); // Loop detected\n                    throw e;\n                }\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting));\n                if (!this.disconnectPromise) throw new Error(\"Disconnect promise must be defined.\");\n                return this.disconnectPromise; // Already disconnecting\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                // If `state` is \"Disconnected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) return Promise.reject(this.transitionLoopDetectedError((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting));\n                if (this.disconnectPromise) throw new Error(\"Disconnect promise must not be defined.\");\n                return Promise.resolve(); // Already disconnected\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        if (!this._ws) throw new Error(\"WebSocket must be defined.\");\n        const ws = this._ws;\n        this.disconnectPromise = new Promise((resolve, reject)=>{\n            this.disconnectResolve = resolve;\n            this.disconnectReject = reject;\n            try {\n                // WebSocket.close()\n                // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/close\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            } catch (error) {\n                // Treating this as a coding error as it apparently can only happen\n                // if you pass close() invalid parameters (so it should never happen)\n                this.logger.error(\"WebSocket close failed.\");\n                this.logger.error(error.toString());\n                throw error;\n            }\n        });\n        return this.disconnectPromise;\n    }\n    _send(message) {\n        if (this.configuration.traceSip === true) this.logger.log(\"Sending WebSocket message:\\n\\n\" + message + \"\\n\");\n        if (this._state !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) return Promise.reject(new Error(\"Not connected.\"));\n        if (!this._ws) throw new Error(\"WebSocket undefined.\");\n        try {\n            // WebSocket.send()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send\n            this._ws.send(message);\n        } catch (error) {\n            if (error instanceof Error) return Promise.reject(error);\n            return Promise.reject(new Error(\"WebSocket send failed.\"));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * WebSocket \"onclose\" event handler.\n     * @param ev - Event.\n     */ onWebSocketClose(ev, ws) {\n        if (ws !== this._ws) return;\n        const message = `WebSocket closed ${this.server} (code: ${ev.code})`;\n        const error = !this.disconnectPromise ? new Error(message) : undefined;\n        if (error) this.logger.warn(\"WebSocket closed unexpectedly\");\n        this.logger.log(message);\n        // We are about to transition to disconnected, so clear our web socket\n        this._ws = undefined;\n        // The `state` MUST transition to \"Disconnected\" before resolving (assuming `state` is not already \"Disconnected\").\n        this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected, error);\n    }\n    /**\n     * WebSocket \"onerror\" event handler.\n     * @param ev - Event.\n     */ onWebSocketError(ev, ws) {\n        if (ws !== this._ws) return;\n        this.logger.error(\"WebSocket error occurred.\");\n    }\n    /**\n     * WebSocket \"onmessage\" event handler.\n     * @param ev - Event.\n     */ onWebSocketMessage(ev, ws) {\n        if (ws !== this._ws) return;\n        const data = ev.data;\n        let finishedData;\n        // CRLF Keep Alive response from server. Clear our keep alive timeout.\n        if (/^(\\r\\n)+$/.test(data)) {\n            this.clearKeepAliveTimeout();\n            if (this.configuration.traceSip === true) this.logger.log(\"Received WebSocket message with CRLF Keep Alive response\");\n            return;\n        }\n        if (!data) {\n            this.logger.warn(\"Received empty message, discarding...\");\n            return;\n        }\n        if (typeof data !== \"string\") {\n            // WebSocket binary message.\n            try {\n                finishedData = new TextDecoder().decode(new Uint8Array(data));\n            // TextDecoder (above) is not supported by old browsers, but it correctly decodes UTF-8.\n            // The line below is an ISO 8859-1 (Latin 1) decoder, so just UTF-8 code points that are 1 byte.\n            // It's old code and works in old browsers (IE), so leaving it here in a comment in case someone needs it.\n            // finishedData = String.fromCharCode.apply(null, (new Uint8Array(data) as unknown as Array<number>));\n            } catch (err) {\n                this.logger.error(err.toString());\n                this.logger.error(\"Received WebSocket binary message failed to be converted into string, message discarded\");\n                return;\n            }\n            if (this.configuration.traceSip === true) this.logger.log(\"Received WebSocket binary message:\\n\\n\" + finishedData + \"\\n\");\n        } else {\n            // WebSocket text message.\n            finishedData = data;\n            if (this.configuration.traceSip === true) this.logger.log(\"Received WebSocket text message:\\n\\n\" + finishedData + \"\\n\");\n        }\n        if (this.state !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) {\n            this.logger.warn(\"Received message while not connected, discarding...\");\n            return;\n        }\n        if (this.onMessage) try {\n            this.onMessage(finishedData);\n        } catch (e) {\n            this.logger.error(e.toString());\n            this.logger.error(\"Exception thrown by onMessage callback\");\n            throw e; // rethrow unhandled exception\n        }\n    }\n    /**\n     * WebSocket \"onopen\" event handler.\n     * @param ev - Event.\n     */ onWebSocketOpen(ev, ws) {\n        if (ws !== this._ws) return;\n        if (this._state === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) {\n            this.logger.log(`WebSocket opened ${this.server}`);\n            this.transitionState((0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected);\n        }\n    }\n    /**\n     * Helper function to generate an Error.\n     * @param state - State transitioning to.\n     */ transitionLoopDetectedError(state) {\n        let message = `A state transition loop has been detected.`;\n        message += ` An attempt to transition from ${this._state} to ${state} before the prior transition completed.`;\n        message += ` Perhaps you are synchronously calling connect() or disconnect() from a callback or state change handler?`;\n        this.logger.error(message);\n        return new (0, $bf477f57ab193740$export$318864ff8d108164)(\"Loop detected.\");\n    }\n    /**\n     * Transition transport state.\n     * @internal\n     */ transitionState(newState, error) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        if (this.transitioningState) throw this.transitionLoopDetectedError(newState);\n        this.transitioningState = true;\n        // Validate state transition\n        switch(this._state){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected) invalidTransition();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected) invalidTransition();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting && newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected) invalidTransition();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                if (newState !== (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        const oldState = this._state;\n        this._state = newState;\n        // Local copies of connect promises (guarding against callbacks changing them indirectly)\n        // const connectPromise = this.connectPromise;\n        const connectResolve = this.connectResolve;\n        const connectReject = this.connectReject;\n        // Reset connect promises if no longer connecting\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) {\n            this.connectPromise = undefined;\n            this.connectResolve = undefined;\n            this.connectReject = undefined;\n        }\n        // Local copies of disconnect promises (guarding against callbacks changing them indirectly)\n        // const disconnectPromise = this.disconnectPromise;\n        const disconnectResolve = this.disconnectResolve;\n        const disconnectReject = this.disconnectReject;\n        // Reset disconnect promises if no longer disconnecting\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting) {\n            this.disconnectPromise = undefined;\n            this.disconnectResolve = undefined;\n            this.disconnectReject = undefined;\n        }\n        // Clear any outstanding connect timeout\n        if (this.connectTimeout) {\n            clearTimeout(this.connectTimeout);\n            this.connectTimeout = undefined;\n        }\n        this.logger.log(`Transitioned from ${oldState} to ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        //  Transition to Connected\n        if (newState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) {\n            this.startSendingKeepAlives();\n            if (this.onConnect) try {\n                this.onConnect();\n            } catch (e) {\n                this.logger.error(e.toString());\n                this.logger.error(\"Exception thrown by onConnect callback\");\n                throw e; // rethrow unhandled exception\n            }\n        }\n        //  Transition from Connected\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected) {\n            this.stopSendingKeepAlives();\n            if (this.onDisconnect) try {\n                if (error) this.onDisconnect(error);\n                else this.onDisconnect();\n            } catch (e) {\n                this.logger.error(e.toString());\n                this.logger.error(\"Exception thrown by onDisconnect callback\");\n                throw e; // rethrow unhandled exception\n            }\n        }\n        // Complete connect promise\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting) {\n            if (!connectResolve) throw new Error(\"Connect resolve undefined.\");\n            if (!connectReject) throw new Error(\"Connect reject undefined.\");\n            newState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected ? connectResolve() : connectReject(error || new Error(\"Connect aborted.\"));\n        }\n        // Complete disconnect promise\n        if (oldState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting) {\n            if (!disconnectResolve) throw new Error(\"Disconnect resolve undefined.\");\n            if (!disconnectReject) throw new Error(\"Disconnect reject undefined.\");\n            newState === (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected ? disconnectResolve() : disconnectReject(error || new Error(\"Disconnect aborted.\"));\n        }\n        this.transitioningState = false;\n    }\n    // TODO: Review \"KeepAlive Stuff\".\n    // It is not clear if it works and there are no tests for it.\n    // It was blindly lifted the keep alive code unchanged from earlier transport code.\n    //\n    // From the RFC...\n    //\n    // SIP WebSocket Clients and Servers may keep their WebSocket\n    // connections open by sending periodic WebSocket \"Ping\" frames as\n    // described in [RFC6455], Section 5.5.2.\n    // ...\n    // The indication and use of the CRLF NAT keep-alive mechanism defined\n    // for SIP connection-oriented transports in [RFC5626], Section 3.5.1 or\n    // [RFC6223] are, of course, usable over the transport defined in this\n    // specification.\n    // https://tools.ietf.org/html/rfc7118#section-6\n    //\n    // and...\n    //\n    // The Ping frame contains an opcode of 0x9.\n    // https://tools.ietf.org/html/rfc6455#section-5.5.2\n    //\n    // ==============================\n    // KeepAlive Stuff\n    // ==============================\n    clearKeepAliveTimeout() {\n        if (this.keepAliveDebounceTimeout) clearTimeout(this.keepAliveDebounceTimeout);\n        this.keepAliveDebounceTimeout = undefined;\n    }\n    /**\n     * Send a keep-alive (a double-CRLF sequence).\n     */ sendKeepAlive() {\n        if (this.keepAliveDebounceTimeout) // We already have an outstanding keep alive, do not send another.\n        return Promise.resolve();\n        this.keepAliveDebounceTimeout = setTimeout(()=>{\n            this.clearKeepAliveTimeout();\n        }, this.configuration.keepAliveDebounce * 1000);\n        return this.send(\"\\r\\n\\r\\n\");\n    }\n    /**\n     * Start sending keep-alives.\n     */ startSendingKeepAlives() {\n        // Compute an amount of time in seconds to wait before sending another keep-alive.\n        const computeKeepAliveTimeout = (upperBound)=>{\n            const lowerBound = upperBound * 0.8;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        if (this.configuration.keepAliveInterval && !this.keepAliveInterval) this.keepAliveInterval = setInterval(()=>{\n            this.sendKeepAlive();\n            this.startSendingKeepAlives();\n        }, computeKeepAliveTimeout(this.configuration.keepAliveInterval));\n    }\n    /**\n     * Stop sending keep-alives.\n     */ stopSendingKeepAlives() {\n        if (this.keepAliveInterval) clearInterval(this.keepAliveInterval);\n        if (this.keepAliveDebounceTimeout) clearTimeout(this.keepAliveDebounceTimeout);\n        this.keepAliveInterval = undefined;\n        this.keepAliveDebounceTimeout = undefined;\n    }\n}\n$9cf814dc8665aa70$export$86495b081fef8e52.defaultOptions = {\n    server: \"\",\n    connectionTimeout: 5,\n    keepAliveInterval: 0,\n    keepAliveDebounce: 10,\n    traceSip: true\n};\n\n\nconst $ddfbfa612c415772$export$bb0adf1d8db61383 = \"0.21.1\";\n\n\n\n\n\n\n\n\n/**\n * {@link UserAgent} state.\n * @remarks\n * Valid state transitions:\n * ```\n * 1. \"Started\" --> \"Stopped\"\n * 2. \"Stopped\" --> \"Started\"\n * ```\n * @public\n */ var $baefc8527022eb6d$export$c1084e0d257c3742;\n(function(UserAgentState) {\n    UserAgentState[\"Started\"] = \"Started\";\n    UserAgentState[\"Stopped\"] = \"Stopped\";\n})($baefc8527022eb6d$export$c1084e0d257c3742 = $baefc8527022eb6d$export$c1084e0d257c3742 || ($baefc8527022eb6d$export$c1084e0d257c3742 = {}));\n\n\nclass $3c1b5dfaafd922c7$export$5fba5e10934a4faf {\n    /**\n     * Constructs a new instance of the `UserAgent` class.\n     * @param options - Options bucket. See {@link UserAgentOptions} for details.\n     */ constructor(options = {}){\n        /** @internal */ this._publishers = {};\n        /** @internal */ this._registerers = {};\n        /** @internal */ this._sessions = {};\n        /** @internal */ this._subscriptions = {};\n        this._state = (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        // initialize delegate\n        this.delegate = options.delegate;\n        // initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, $3c1b5dfaafd922c7$export$5fba5e10934a4faf.defaultOptions()), {\n            sipjsId: (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(5)\n        }), {\n            uri: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", \"anonymous.\" + (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(6), \"anonymous.invalid\")\n        }), {\n            viaHost: (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(12) + \".invalid\"\n        }), $3c1b5dfaafd922c7$export$5fba5e10934a4faf.stripUndefinedProperties(options));\n        // viaHost is hack\n        if (this.options.hackIpInContact) {\n            if (typeof this.options.hackIpInContact === \"boolean\" && this.options.hackIpInContact) {\n                const from = 1;\n                const to = 254;\n                const octet = Math.floor(Math.random() * (to - from + 1) + from);\n                // random Test-Net IP (http://tools.ietf.org/html/rfc5735)\n                this.options.viaHost = \"192.0.2.\" + octet;\n            } else if (this.options.hackIpInContact) this.options.viaHost = this.options.hackIpInContact;\n        }\n        // initialize logger & logger factory\n        this.loggerFactory = new (0, $98fe2e5334faa23b$export$e0f5ef03cd95415a)();\n        this.logger = this.loggerFactory.getLogger(\"sip.UserAgent\");\n        this.loggerFactory.builtinEnabled = this.options.logBuiltinEnabled;\n        this.loggerFactory.connector = this.options.logConnector;\n        switch(this.options.logLevel){\n            case \"error\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).error;\n                break;\n            case \"warn\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).warn;\n                break;\n            case \"log\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).log;\n                break;\n            case \"debug\":\n                this.loggerFactory.level = (0, $bb2da993b0fb58b9$export$7dc82a261720bb19).debug;\n                break;\n            default:\n                break;\n        }\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key)=>{\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch(key){\n                    case \"uri\":\n                    case \"sessionDescriptionHandlerFactory\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + value);\n                        break;\n                    case \"authorizationPassword\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + \"NOT SHOWN\");\n                        break;\n                    case \"transportConstructor\":\n                        this.logger.log(\"\\xb7 \" + key + \": \" + value.name);\n                        break;\n                    default:\n                        this.logger.log(\"\\xb7 \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // guard deprecated transport options (remove this in version 16.x)\n        if (this.options.transportOptions) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = this.options.transportOptions;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated.maxReconnectionAttempts;\n            const reconnectionTimeoutDeprecated = optionsDeprecated.reconnectionTimeout;\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (reconnectionTimeoutDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"reconnectionTimeout\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (options.reconnectionDelay === undefined && reconnectionTimeoutDeprecated !== undefined) this.options.reconnectionDelay = reconnectionTimeoutDeprecated;\n            if (options.reconnectionAttempts === undefined && maxReconnectionAttemptsDeprecated !== undefined) this.options.reconnectionAttempts = maxReconnectionAttemptsDeprecated;\n        }\n        // guard deprecated user agent options (remove this in version 16.x)\n        if (options.reconnectionDelay !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionDelay\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        if (options.reconnectionAttempts !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionAttempts\" as has apparently been specified and has been deprecated. ` + \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        // Initialize Transport\n        this._transport = new this.options.transportConstructor(this.getLogger(\"sip.Transport\"), this.options.transportOptions);\n        this.initTransportCallbacks();\n        // Initialize Contact\n        this._contact = this.initContact();\n        // Set instance id\n        this._instanceId = this.options.instanceId ? this.options.instanceId : $3c1b5dfaafd922c7$export$5fba5e10934a4faf.newUUID();\n        if ((0, $dd77ce08b7a88b80$export$553a52f18b21505e).parse(this._instanceId, \"uuid\") === -1) throw new Error(\"Invalid instanceId.\");\n        // Initialize UserAgentCore\n        this._userAgentCore = this.initCore();\n    }\n    /**\n     * Create a URI instance from a string.\n     * @param uri - The string to parse.\n     *\n     * @remarks\n     * Returns undefined if the syntax of the URI is invalid.\n     * The syntax must conform to a SIP URI as defined in the RFC.\n     * 25 Augmented BNF for the SIP Protocol\n     * https://tools.ietf.org/html/rfc3261#section-25\n     *\n     * @example\n     * ```ts\n     * const uri = UserAgent.makeURI(\"sip:edgar@example.com\");\n     * ```\n     */ static makeURI(uri) {\n        return (0, $dd77ce08b7a88b80$export$553a52f18b21505e).URIParse(uri);\n    }\n    /** Default user agent options. */ static defaultOptions() {\n        return {\n            allowLegacyNotifications: false,\n            authorizationHa1: \"\",\n            authorizationPassword: \"\",\n            authorizationUsername: \"\",\n            delegate: {},\n            contactName: \"\",\n            contactParams: {\n                transport: \"ws\"\n            },\n            displayName: \"\",\n            forceRport: false,\n            gracefulShutdown: true,\n            hackAllowUnregisteredOptionTags: false,\n            hackIpInContact: false,\n            hackViaTcp: false,\n            instanceId: \"\",\n            instanceIdAlwaysAdded: false,\n            logBuiltinEnabled: true,\n            logConfiguration: true,\n            logConnector: ()=>{\n            /* noop */ },\n            logLevel: \"log\",\n            noAnswerTimeout: 60,\n            preloadedRouteSet: [],\n            reconnectionAttempts: 0,\n            reconnectionDelay: 4,\n            sendInitialProvisionalResponse: true,\n            sessionDescriptionHandlerFactory: (0, $1fb45aa3bdfbf189$export$882edbaac6eb455)(),\n            sessionDescriptionHandlerFactoryOptions: {},\n            sipExtension100rel: (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Unsupported,\n            sipExtensionReplaces: (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Unsupported,\n            sipExtensionExtraSupported: [],\n            sipjsId: \"\",\n            transportConstructor: (0, $9cf814dc8665aa70$export$86495b081fef8e52),\n            transportOptions: {},\n            uri: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            userAgentString: \"SIP.js/\" + (0, $ddfbfa612c415772$export$bb0adf1d8db61383),\n            viaHost: \"\"\n        };\n    }\n    // http://stackoverflow.com/users/109538/broofa\n    static newUUID() {\n        const UUID = \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, (c)=>{\n            const r = Math.floor(Math.random() * 16);\n            const v = c === \"x\" ? r : r % 4 + 8;\n            return v.toString(16);\n        });\n        return UUID;\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */ static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key)=>{\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            object[key] = options[key];\n            return object;\n        }, {});\n    }\n    /**\n     * User agent configuration.\n     */ get configuration() {\n        return this.options;\n    }\n    /**\n     * User agent contact.\n     */ get contact() {\n        return this._contact;\n    }\n    /**\n     * User agent instance id.\n     */ get instanceId() {\n        return this._instanceId;\n    }\n    /**\n     * User agent state.\n     */ get state() {\n        return this._state;\n    }\n    /**\n     * User agent state change emitter.\n     */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * User agent transport.\n     */ get transport() {\n        return this._transport;\n    }\n    /**\n     * User agent core.\n     */ get userAgentCore() {\n        return this._userAgentCore;\n    }\n    /**\n     * The logger.\n     */ getLogger(category, label) {\n        return this.loggerFactory.getLogger(category, label);\n    }\n    /**\n     * The logger factory.\n     */ getLoggerFactory() {\n        return this.loggerFactory;\n    }\n    /**\n     * True if transport is connected.\n     */ isConnected() {\n        return this.transport.isConnected();\n    }\n    /**\n     * Reconnect the transport.\n     */ reconnect() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return Promise.reject(new Error(\"User agent stopped.\"));\n        // Make sure we don't call synchronously\n        return Promise.resolve().then(()=>this.transport.connect());\n    }\n    /**\n     * Start the user agent.\n     *\n     * @remarks\n     * Resolves if transport connects, otherwise rejects.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * @example\n     * ```ts\n     * userAgent.start()\n     *   .then(() => {\n     *     // userAgent.isConnected() === true\n     *   })\n     *   .catch((error: Error) => {\n     *     // userAgent.isConnected() === false\n     *   });\n     * ```\n     */ start() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started) {\n            this.logger.warn(`User agent already started`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Starting ${this.configuration.uri}`);\n        // Transition state\n        this.transitionState((0, $baefc8527022eb6d$export$c1084e0d257c3742).Started);\n        return this.transport.connect();\n    }\n    /**\n     * Stop the user agent.\n     *\n     * @remarks\n     * Resolves when the user agent has completed a graceful shutdown.\n     * ```txt\n     * 1) Sessions terminate.\n     * 2) Registerers unregister.\n     * 3) Subscribers unsubscribe.\n     * 4) Publishers unpublish.\n     * 5) Transport disconnects.\n     * 6) User Agent Core resets.\n     * ```\n     * The user agent state transistions to stopped once these steps have been completed.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * NOTE: While this is a \"graceful shutdown\", it can also be very slow one if you\n     * are waiting for the returned Promise to resolve. The disposal of the clients and\n     * dialogs is done serially - waiting on one to finish before moving on to the next.\n     * This can be slow if there are lot of subscriptions to unsubscribe for example.\n     *\n     * THE SLOW PACE IS INTENTIONAL!\n     * While one could spin them all down in parallel, this could slam the remote server.\n     * It is bad practice to denial of service attack (DoS attack) servers!!!\n     * Moreover, production servers will automatically blacklist clients which send too\n     * many requests in too short a period of time - dropping any additional requests.\n     *\n     * If a different approach to disposing is needed, one can implement whatever is\n     * needed and execute that prior to calling `stop()`. Alternatively one may simply\n     * not wait for the Promise returned by `stop()` to complete.\n     */ async stop() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) {\n            this.logger.warn(`User agent already stopped`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Stopping ${this.configuration.uri}`);\n        // The default behavior is to cleanup dialogs and registrations. This is not that...\n        if (!this.options.gracefulShutdown) {\n            // Dispose of the transport (disconnecting)\n            this.logger.log(`Dispose of transport`);\n            this.transport.dispose().catch((error)=>{\n                this.logger.error(error.message);\n                throw error;\n            });\n            // Dispose of the user agent core (resetting)\n            this.logger.log(`Dispose of core`);\n            this.userAgentCore.dispose();\n            // Reset dialogs and registrations\n            this._publishers = {};\n            this._registerers = {};\n            this._sessions = {};\n            this._subscriptions = {};\n            this.transitionState((0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped);\n            return Promise.resolve();\n        }\n        // Be careful here to use a local references as start() can be called\n        // again before we complete and we don't want to touch new clients\n        // and we don't want to step on the new instances (or vice versa).\n        const publishers = Object.assign({}, this._publishers);\n        const registerers = Object.assign({}, this._registerers);\n        const sessions = Object.assign({}, this._sessions);\n        const subscriptions = Object.assign({}, this._subscriptions);\n        const transport = this.transport;\n        const userAgentCore = this.userAgentCore;\n        //\n        // At this point we have completed the state transition and everything\n        // following will effectively run async and MUST NOT cause any issues\n        // if UserAgent.start() is called while the following code continues.\n        //\n        // TODO: Minor optimization.\n        // The disposal in all cases involves, in part, sending messages which\n        // is not worth doing if the transport is not connected as we know attempting\n        // to send messages will be futile. But none of these disposal methods check\n        // if that's is the case and it would be easy for them to do so at this point.\n        // Dispose of Registerers\n        this.logger.log(`Dispose of registerers`);\n        for(const id in registerers)if (registerers[id]) await registerers[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._registerers[id];\n            throw error;\n        });\n        // Dispose of Sessions\n        this.logger.log(`Dispose of sessions`);\n        for(const id in sessions)if (sessions[id]) await sessions[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._sessions[id];\n            throw error;\n        });\n        // Dispose of Subscriptions\n        this.logger.log(`Dispose of subscriptions`);\n        for(const id in subscriptions)if (subscriptions[id]) await subscriptions[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._subscriptions[id];\n            throw error;\n        });\n        // Dispose of Publishers\n        this.logger.log(`Dispose of publishers`);\n        for(const id in publishers)if (publishers[id]) await publishers[id].dispose().catch((error)=>{\n            this.logger.error(error.message);\n            delete this._publishers[id];\n            throw error;\n        });\n        // Dispose of the transport (disconnecting)\n        this.logger.log(`Dispose of transport`);\n        await transport.dispose().catch((error)=>{\n            this.logger.error(error.message);\n            throw error;\n        });\n        // Dispose of the user agent core (resetting)\n        this.logger.log(`Dispose of core`);\n        userAgentCore.dispose();\n        // Transition state\n        this.transitionState((0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped);\n    }\n    /**\n     * Used to avoid circular references.\n     * @internal\n     */ _makeInviter(targetURI, options) {\n        return new (0, $989df868235ee8e3$export$2215cc52469fcfa0)(this, targetURI, options);\n    }\n    /**\n     * Attempt reconnection up to `maxReconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */ attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Maximum reconnection attempts reached`);\n            return;\n        }\n        this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        setTimeout(()=>{\n            this.reconnect().then(()=>{\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n            }).catch((error)=>{\n                this.logger.error(error.message);\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Initialize contact.\n     */ initContact() {\n        const contactName = this.options.contactName !== \"\" ? this.options.contactName : (0, $9ef5a4825b23ca0b$export$8ade8bb6be9659e6)(8);\n        const contactParams = this.options.contactParams;\n        const contact = {\n            pubGruu: undefined,\n            tempGruu: undefined,\n            uri: new (0, $dbdae61072997c03$export$9156e739aa33e19f)(\"sip\", contactName, this.options.viaHost, undefined, contactParams),\n            toString: (contactToStringOptions = {})=>{\n                const anonymous = contactToStringOptions.anonymous || false;\n                const outbound = contactToStringOptions.outbound || false;\n                const register = contactToStringOptions.register || false;\n                let contactString = \"<\";\n                // 3.3.  Using a GRUU\n                // Once a user agent obtains GRUUs from the registrar, it uses them in\n                // several ways.  First, it uses them as the contents of the Contact\n                // header field in non-REGISTER requests and responses that it emits\n                // (for example, an INVITE request and 200 OK response).\n                // https://datatracker.ietf.org/doc/html/rfc5627#section-3.3\n                if (anonymous) contactString += this.contact.tempGruu || `sip:anonymous@anonymous.invalid;transport=${contactParams.transport ? contactParams.transport : \"ws\"}`;\n                else if (register) contactString += this.contact.uri;\n                else contactString += this.contact.pubGruu || this.contact.uri;\n                if (outbound) contactString += \";ob\";\n                contactString += \">\";\n                if (this.options.instanceIdAlwaysAdded) contactString += ';+sip.instance=\"<urn:uuid:' + this._instanceId + '>\"';\n                return contactString;\n            }\n        };\n        return contact;\n    }\n    /**\n     * Initialize user agent core.\n     */ initCore() {\n        // supported options\n        let supportedOptionTags = [];\n        supportedOptionTags.push(\"outbound\"); // TODO: is this really supported?\n        if (this.options.sipExtension100rel === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Supported) supportedOptionTags.push(\"100rel\");\n        if (this.options.sipExtensionReplaces === (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Supported) supportedOptionTags.push(\"replaces\");\n        if (this.options.sipExtensionExtraSupported) supportedOptionTags.push(...this.options.sipExtensionExtraSupported);\n        if (!this.options.hackAllowUnregisteredOptionTags) supportedOptionTags = supportedOptionTags.filter((optionTag)=>(0, $546aa63f60a92037$export$abeafd9e99196554)[optionTag]);\n        supportedOptionTags = Array.from(new Set(supportedOptionTags)); // array of unique values\n        // FIXME: TODO: This was ported, but this is and was just plain broken.\n        const supportedOptionTagsResponse = supportedOptionTags.slice();\n        if (this.contact.pubGruu || this.contact.tempGruu) supportedOptionTagsResponse.push(\"gruu\");\n        // core configuration\n        const userAgentCoreConfiguration = {\n            aor: this.options.uri,\n            contact: this.contact,\n            displayName: this.options.displayName,\n            loggerFactory: this.loggerFactory,\n            hackViaTcp: this.options.hackViaTcp,\n            routeSet: this.options.preloadedRouteSet,\n            supportedOptionTags: supportedOptionTags,\n            supportedOptionTagsResponse: supportedOptionTagsResponse,\n            sipjsId: this.options.sipjsId,\n            userAgentHeaderFieldValue: this.options.userAgentString,\n            viaForceRport: this.options.forceRport,\n            viaHost: this.options.viaHost,\n            authenticationFactory: ()=>{\n                const username = this.options.authorizationUsername ? this.options.authorizationUsername : this.options.uri.user; // if authorization username not provided, use uri user as username\n                const password = this.options.authorizationPassword ? this.options.authorizationPassword : undefined;\n                const ha1 = this.options.authorizationHa1 ? this.options.authorizationHa1 : undefined;\n                return new (0, $22e94f419ea4370d$export$44fd481568a62fe6)(this.getLoggerFactory(), ha1, username, password);\n            },\n            transportAccessor: ()=>this.transport\n        };\n        const userAgentCoreDelegate = {\n            onInvite: (incomingInviteRequest)=>{\n                var _a;\n                const invitation = new (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89)(this, incomingInviteRequest);\n                incomingInviteRequest.delegate = {\n                    onCancel: (cancel)=>{\n                        invitation._onCancel(cancel);\n                    },\n                    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                    onTransportError: (error)=>{\n                        // A server transaction MUST NOT discard transaction state based only on\n                        // encountering a non-recoverable transport error when sending a\n                        // response.  Instead, the associated INVITE server transaction state\n                        // machine MUST remain in its current state.  (Timers will eventually\n                        // cause it to transition to the \"Terminated\" state).\n                        // https://tools.ietf.org/html/rfc6026#section-7.1\n                        // As noted in the comment above, we are to leaving it to the transaction\n                        // timers to eventually cause the transaction to sort itself out in the case\n                        // of a transport failure in an invite server transaction. This delegate method\n                        // is here simply here for completeness and to make it clear that it provides\n                        // nothing more than informational hook into the core. That is, if you think\n                        // you should be trying to deal with a transport error here, you are likely wrong.\n                        this.logger.error(\"A transport error has occurred while handling an incoming INVITE request.\");\n                    }\n                };\n                // FIXME: Ported - 100 Trying send should be configurable.\n                // Only required if TU will not respond in 200ms.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                incomingInviteRequest.trying();\n                // The Replaces header contains information used to match an existing\n                // SIP dialog (call-id, to-tag, and from-tag).  Upon receiving an INVITE\n                // with a Replaces header, the User Agent (UA) attempts to match this\n                // information with a confirmed or early dialog.\n                // https://tools.ietf.org/html/rfc3891#section-3\n                if (this.options.sipExtensionReplaces !== (0, $546aa63f60a92037$export$7ddf33a7d88270b4).Unsupported) {\n                    const message = incomingInviteRequest.message;\n                    const replaces = message.parseHeader(\"replaces\");\n                    if (replaces) {\n                        const callId = replaces.call_id;\n                        if (typeof callId !== \"string\") throw new Error(\"Type of call id is not string\");\n                        const toTag = replaces.replaces_to_tag;\n                        if (typeof toTag !== \"string\") throw new Error(\"Type of to tag is not string\");\n                        const fromTag = replaces.replaces_from_tag;\n                        if (typeof fromTag !== \"string\") throw new Error(\"type of from tag is not string\");\n                        const targetDialogId = callId + toTag + fromTag;\n                        const targetDialog = this.userAgentCore.dialogs.get(targetDialogId);\n                        // If no match is found, the UAS rejects the INVITE and returns a 481\n                        // Call/Transaction Does Not Exist response.  Likewise, if the Replaces\n                        // header field matches a dialog which was not created with an INVITE,\n                        // the UAS MUST reject the request with a 481 response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog) {\n                            invitation.reject({\n                                statusCode: 481\n                            });\n                            return;\n                        }\n                        // If the Replaces header field matches a confirmed dialog, it checks\n                        // for the presence of the \"early-only\" flag in the Replaces header\n                        // field.  (This flag allows the UAC to prevent a potentially\n                        // undesirable race condition described in Section 7.1.) If the flag is\n                        // present, the UA rejects the request with a 486 Busy response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog.early && replaces.early_only === true) {\n                            invitation.reject({\n                                statusCode: 486\n                            });\n                            return;\n                        }\n                        // Provide a handle on the session being replaced.\n                        const targetSession = this._sessions[callId + fromTag] || this._sessions[callId + toTag] || undefined;\n                        if (!targetSession) throw new Error(\"Session does not exist.\");\n                        invitation._replacee = targetSession;\n                    }\n                }\n                // Delegate invitation handling.\n                if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) {\n                    if (invitation.autoSendAnInitialProvisionalResponse) {\n                        invitation.progress().then(()=>{\n                            var _a;\n                            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) === undefined) throw new Error(\"onInvite undefined.\");\n                            this.delegate.onInvite(invitation);\n                        });\n                        return;\n                    }\n                    this.delegate.onInvite(invitation);\n                    return;\n                }\n                // A common scenario occurs when the callee is currently not willing or\n                // able to take additional calls at this end system.  A 486 (Busy Here)\n                // SHOULD be returned in such a scenario.\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n                invitation.reject({\n                    statusCode: 486\n                });\n            },\n            onMessage: (incomingMessageRequest)=>{\n                if (this.delegate && this.delegate.onMessage) {\n                    const message = new (0, $031801d494727803$export$f69c19e57285b83a)(incomingMessageRequest);\n                    this.delegate.onMessage(message);\n                } else // Accept the MESSAGE request, but do nothing with it.\n                incomingMessageRequest.accept();\n            },\n            onNotify: (incomingNotifyRequest)=>{\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                if (this.delegate && this.delegate.onNotify) {\n                    const notification = new (0, $305e86db02d77018$export$14834abbfce3b8cd)(incomingNotifyRequest);\n                    this.delegate.onNotify(notification);\n                } else // Per the above which obsoletes https://tools.ietf.org/html/rfc3265,\n                // the use of out of dialog NOTIFY is obsolete, but...\n                if (this.options.allowLegacyNotifications) incomingNotifyRequest.accept(); // Accept the NOTIFY request, but do nothing with it.\n                else incomingNotifyRequest.reject({\n                    statusCode: 481\n                });\n            },\n            onRefer: (incomingReferRequest)=>{\n                this.logger.warn(\"Received an out of dialog REFER request\");\n                // TOOD: this.delegate.onRefer(...)\n                if (this.delegate && this.delegate.onReferRequest) this.delegate.onReferRequest(incomingReferRequest);\n                else incomingReferRequest.reject({\n                    statusCode: 405\n                });\n            },\n            onRegister: (incomingRegisterRequest)=>{\n                this.logger.warn(\"Received an out of dialog REGISTER request\");\n                // TOOD: this.delegate.onRegister(...)\n                if (this.delegate && this.delegate.onRegisterRequest) this.delegate.onRegisterRequest(incomingRegisterRequest);\n                else incomingRegisterRequest.reject({\n                    statusCode: 405\n                });\n            },\n            onSubscribe: (incomingSubscribeRequest)=>{\n                this.logger.warn(\"Received an out of dialog SUBSCRIBE request\");\n                // TOOD: this.delegate.onSubscribe(...)\n                if (this.delegate && this.delegate.onSubscribeRequest) this.delegate.onSubscribeRequest(incomingSubscribeRequest);\n                else incomingSubscribeRequest.reject({\n                    statusCode: 405\n                });\n            }\n        };\n        return new (0, $977f1c19544cd05f$export$1f818b2e62a6351e)(userAgentCoreConfiguration, userAgentCoreDelegate);\n    }\n    initTransportCallbacks() {\n        this.transport.onConnect = ()=>this.onTransportConnect();\n        this.transport.onDisconnect = (error)=>this.onTransportDisconnect(error);\n        this.transport.onMessage = (message)=>this.onTransportMessage(message);\n    }\n    onTransportConnect() {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return;\n        if (this.delegate && this.delegate.onConnect) this.delegate.onConnect();\n    }\n    onTransportDisconnect(error) {\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return;\n        if (this.delegate && this.delegate.onDisconnect) this.delegate.onDisconnect(error);\n        // Only attempt to reconnect if network/server dropped the connection.\n        if (error && this.options.reconnectionAttempts > 0) this.attemptReconnection();\n    }\n    onTransportMessage(messageString) {\n        const message = (0, $fe1227fc15cbdf8c$export$7acfa6ed01010e37).parseMessage(messageString, this.getLogger(\"sip.Parser\"));\n        if (!message) {\n            this.logger.warn(\"Failed to parse incoming message. Dropping.\");\n            return;\n        }\n        if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped && message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n            this.logger.warn(`Received ${message.method} request while stopped. Dropping.`);\n            return;\n        }\n        // A valid SIP request formulated by a UAC MUST, at a minimum, contain\n        // the following header fields: To, From, CSeq, Call-ID, Max-Forwards,\n        // and Via; all of these header fields are mandatory in all SIP\n        // requests.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1\n        const hasMinimumHeaders = ()=>{\n            const mandatoryHeaders = [\n                \"from\",\n                \"to\",\n                \"call_id\",\n                \"cseq\",\n                \"via\"\n            ];\n            for (const header of mandatoryHeaders)if (!message.hasHeader(header)) {\n                this.logger.warn(`Missing mandatory header field : ${header}.`);\n                return false;\n            }\n            return true;\n        };\n        // Request Checks\n        if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Request missing mandatory header field. Dropping.`);\n                return;\n            }\n            // FIXME: This is non-standard and should be a configurable behavior (desirable regardless).\n            // Custom SIP.js check to reject request from ourself (this instance of SIP.js).\n            // This is port of SanityCheck.rfc3261_16_3_4().\n            if (!message.toTag && message.callId.substr(0, 5) === this.options.sipjsId) {\n                this.userAgentCore.replyStateless(message, {\n                    statusCode: 482\n                });\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_request().\n            const len = (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.userAgentCore.replyStateless(message, {\n                    statusCode: 400\n                });\n                return;\n            }\n        }\n        // Response Checks\n        if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Response missing mandatory header field. Dropping.`);\n                return;\n            }\n            // Custom SIP.js check to drop responses if multiple Via headers.\n            // This is port of SanityCheck.rfc3261_8_1_3_3().\n            if (message.getHeaders(\"via\").length > 1) {\n                this.logger.warn(\"More than one Via header field present in the response. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to drop responses if bad Via header.\n            // This is port of SanityCheck.rfc3261_18_1_2().\n            if (message.via.host !== this.options.viaHost || message.via.port !== undefined) {\n                this.logger.warn(\"Via sent-by in the response does not match UA Via host value. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_response().\n            const len = (0, $9ef5a4825b23ca0b$export$35c75c636a5e80e5)(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.logger.warn(\"Message body length is lower than the value in Content-Length header field. Dropping.\");\n                return;\n            }\n        }\n        // Handle Request\n        if (message instanceof (0, $36a488a350db25b8$export$b03b8011240de09c)) {\n            this.userAgentCore.receiveIncomingRequestFromTransport(message);\n            return;\n        }\n        // Handle Response\n        if (message instanceof (0, $e3862b80ec7dd4cb$export$9e43a04ccd4d27cc)) {\n            this.userAgentCore.receiveIncomingResponseFromTransport(message);\n            return;\n        }\n        throw new Error(\"Invalid message type.\");\n    }\n    /**\n     * Transition state.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    transitionState(newState, error) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate state transition\n        switch(this._state){\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started:\n                if (newState !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) invalidTransition();\n                break;\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped:\n                if (newState !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started) invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        this.logger.log(`Transitioned from ${this._state} to ${newState}`);\n        this._state = newState;\n        this._stateEventEmitter.emit(this._state);\n    }\n}\n\n\n\n\n\n\nclass $d5859fd1c29de512$export$415798a788f40554 {\n    /**\n     * Constructs a new instance of the `SessionManager` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SessionManagerOptions} for details.\n     */ constructor(server, options = {}){\n        /** Sessions being managed. */ this.managedSessions = [];\n        this.attemptingReconnection = false;\n        this.optionsPingFailure = false;\n        this.optionsPingRunning = false;\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({\n            aor: \"\",\n            autoStop: true,\n            delegate: {},\n            iceStopWaitingOnServerReflexive: false,\n            managedSessionFactory: (0, $6dd294c5c57173ab$export$9c571c3c8f631dc5)(),\n            maxSimultaneousSessions: 2,\n            media: {},\n            optionsPingInterval: -1,\n            optionsPingRequestURI: \"\",\n            reconnectionAttempts: 3,\n            reconnectionDelay: 4,\n            registrationRetry: false,\n            registrationRetryInterval: 3,\n            registerGuard: null,\n            registererOptions: {},\n            registererRegisterOptions: {},\n            sendDTMFUsingSessionDescriptionHandler: false,\n            userAgentOptions: {}\n        }, $d5859fd1c29de512$export$415798a788f40554.stripUndefinedProperties(options));\n        // UserAgentOptions\n        const userAgentOptions = Object.assign({}, options.userAgentOptions);\n        // Transport\n        if (!userAgentOptions.transportConstructor) userAgentOptions.transportConstructor = (0, $9cf814dc8665aa70$export$86495b081fef8e52);\n        // TransportOptions\n        if (!userAgentOptions.transportOptions) userAgentOptions.transportOptions = {\n            server: server\n        };\n        // URI\n        if (!userAgentOptions.uri) // If an AOR was provided, convert it to a URI\n        {\n            if (options.aor) {\n                const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(options.aor);\n                if (!uri) throw new Error(`Failed to create valid URI from ${options.aor}`);\n                userAgentOptions.uri = uri;\n            }\n        }\n        // UserAgent\n        this.userAgent = new (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf)(userAgentOptions);\n        // UserAgent's delegate\n        this.userAgent.delegate = {\n            // Handle connection with server established\n            onConnect: ()=>{\n                this.logger.log(`Connected`);\n                if (this.delegate && this.delegate.onServerConnect) this.delegate.onServerConnect();\n                // Attempt to register if we are supposed to be registered\n                if (this.shouldBeRegistered) this.register();\n                // Start OPTIONS pings if we are to be pinging\n                if (this.options.optionsPingInterval > 0) this.optionsPingStart();\n            },\n            // Handle connection with server lost\n            onDisconnect: async (error)=>{\n                this.logger.log(`Disconnected`);\n                // Stop OPTIONS ping if need be.\n                let optionsPingFailure = false;\n                if (this.options.optionsPingInterval > 0) {\n                    optionsPingFailure = this.optionsPingFailure;\n                    this.optionsPingFailure = false;\n                    this.optionsPingStop();\n                }\n                // Let delgate know we have disconnected\n                if (this.delegate && this.delegate.onServerDisconnect) this.delegate.onServerDisconnect(error);\n                // If the user called `disconnect` a graceful cleanup will be done therein.\n                // Only cleanup if network/server dropped the connection.\n                // Only reconnect if network/server dropped the connection\n                if (error || optionsPingFailure) {\n                    // There is no transport at this point, so we are not expecting to be able to\n                    // send messages much less get responses. So just dispose of everything without\n                    // waiting for anything to succeed.\n                    if (this.registerer) {\n                        this.logger.log(`Disposing of registerer...`);\n                        this.registerer.dispose().catch((e)=>{\n                            this.logger.debug(`Error occurred disposing of registerer after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                        this.registerer = undefined;\n                    }\n                    this.managedSessions.slice().map((el)=>el.session).forEach(async (session)=>{\n                        this.logger.log(`Disposing of session...`);\n                        session.dispose().catch((e)=>{\n                            this.logger.debug(`Error occurred disposing of a session after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                    });\n                    // Attempt to reconnect if we are supposed to be connected.\n                    if (this.shouldBeConnected) this.attemptReconnection();\n                }\n            },\n            // Handle incoming invitations\n            onInvite: (invitation)=>{\n                this.logger.log(`[${invitation.id}] Received INVITE`);\n                // Guard against a maximum number of pre-existing sessions.\n                // An incoming INVITE request may be received at any time and/or while in the process\n                // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n                const maxSessions = this.options.maxSimultaneousSessions;\n                if (maxSessions !== 0 && this.managedSessions.length > maxSessions) {\n                    this.logger.warn(`[${invitation.id}] Session already in progress, rejecting INVITE...`);\n                    invitation.reject().then(()=>{\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    }).catch((error)=>{\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                    return;\n                }\n                // Use our configured constraints as options for any Inviter created as result of a REFER\n                const referralInviterOptions = {\n                    sessionDescriptionHandlerOptions: {\n                        constraints: this.constraints\n                    }\n                };\n                // Initialize our session\n                this.initSession(invitation, referralInviterOptions);\n                // Delegate\n                if (this.delegate && this.delegate.onCallReceived) this.delegate.onCallReceived(invitation);\n                else {\n                    this.logger.warn(`[${invitation.id}] No handler available, rejecting INVITE...`);\n                    invitation.reject().then(()=>{\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    }).catch((error)=>{\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                }\n            },\n            // Handle incoming messages\n            onMessage: (message)=>{\n                message.accept().then(()=>{\n                    if (this.delegate && this.delegate.onMessageReceived) this.delegate.onMessageReceived(message);\n                });\n            },\n            // Handle incoming notifications\n            onNotify: (notification)=>{\n                notification.accept().then(()=>{\n                    if (this.delegate && this.delegate.onNotificationReceived) this.delegate.onNotificationReceived(notification);\n                });\n            }\n        };\n        // RegistererOptions\n        this.registererOptions = Object.assign({}, options.registererOptions);\n        // RegistererRegisterOptions\n        this.registererRegisterOptions = Object.assign({}, options.registererRegisterOptions);\n        // Retry registration on failure or rejection.\n        if (this.options.registrationRetry) {\n            // If the register request is rejected, try again...\n            this.registererRegisterOptions.requestDelegate = this.registererRegisterOptions.requestDelegate || {};\n            const existingOnReject = this.registererRegisterOptions.requestDelegate.onReject;\n            this.registererRegisterOptions.requestDelegate.onReject = (response)=>{\n                existingOnReject && existingOnReject(response);\n                // If at first we don't succeed, try try again...\n                this.attemptRegistration();\n            };\n        }\n        // Use the SIP.js logger\n        this.logger = this.userAgent.getLogger(\"sip.SessionManager\");\n        // Monitor network connectivity and attempt reconnection and reregistration when we come online\n        window.addEventListener(\"online\", ()=>{\n            this.logger.log(`Online`);\n            if (this.shouldBeConnected) this.connect();\n        });\n        // NOTE: The autoStop option does not currently work as one likley expects.\n        //       This code is here because the \"autoStop behavior\" and this assoicated\n        //       implemenation has been a recurring request. So instead of removing\n        //       the implementation again (because it doesn't work) and then having\n        //       to explain agian the issue over and over again to those who want it,\n        //       we have included it here to break that cycle. The implementation is\n        //       harmless and serves to provide an explaination for those interested.\n        if (this.options.autoStop) // Standard operation workflow will resume after this callback exits, meaning\n        // that any asynchronous operations are likely not going to be finished, especially\n        // if they are guaranteed to not be executed in the current tick (promises fall\n        // under this category, they will never be resolved synchronously by design).\n        window.addEventListener(\"beforeunload\", async ()=>{\n            this.shouldBeConnected = false;\n            this.shouldBeRegistered = false;\n            if (this.userAgent.state !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) // The stop() method returns a promise which will not resolve before the page unloads.\n            await this.userAgent.stop();\n        });\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */ static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key)=>{\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            object[key] = options[key];\n            return object;\n        }, {});\n    }\n    /**\n     * The local media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */ getLocalMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) return undefined;\n        if (!(sdh instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        return sdh.localMediaStream;\n    }\n    /**\n     * The remote media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */ getRemoteMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) return undefined;\n        if (!(sdh instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        return sdh.remoteMediaStream;\n    }\n    /**\n     * The local audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ getLocalAudioTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"audio\");\n    }\n    /**\n     * The local video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ getLocalVideoTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"video\");\n    }\n    /**\n     * The remote audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ getRemoteAudioTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"audio\");\n    }\n    /**\n     * The remote video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ getRemoteVideoTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track)=>track.kind === \"video\");\n    }\n    /**\n     * Connect.\n     * @remarks\n     * If not started, starts the UserAgent connecting the WebSocket Transport.\n     * Otherwise reconnects the UserAgent's WebSocket Transport.\n     * Attempts will be made to reconnect as needed.\n     */ async connect() {\n        this.logger.log(`Connecting UserAgent...`);\n        this.shouldBeConnected = true;\n        if (this.userAgent.state !== (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started) return this.userAgent.start();\n        return this.userAgent.reconnect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * If not stopped, stops the UserAgent disconnecting the WebSocket Transport.\n     */ async disconnect() {\n        this.logger.log(`Disconnecting UserAgent...`);\n        if (this.userAgent.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return Promise.resolve();\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        this.registerer = undefined;\n        return this.userAgent.stop();\n    }\n    /**\n     * Return true if transport is connected.\n     */ isConnected() {\n        return this.userAgent.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     * Attempts will be made to re-register as needed.\n     */ async register(registererRegisterOptions) {\n        this.logger.log(`Registering UserAgent...`);\n        this.shouldBeRegistered = true;\n        if (registererRegisterOptions !== undefined) this.registererRegisterOptions = Object.assign({}, registererRegisterOptions);\n        if (!this.registerer) {\n            this.registerer = new (0, $1c17056ca0658eec$export$ed326b71f90510a1)(this.userAgent, this.registererOptions);\n            this.registerer.stateChange.addListener((state)=>{\n                switch(state){\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Initial:\n                        break;\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered:\n                        if (this.delegate && this.delegate.onRegistered) this.delegate.onRegistered();\n                        break;\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered:\n                        if (this.delegate && this.delegate.onUnregistered) this.delegate.onUnregistered();\n                        // If we transition to an unregister state, attempt to get back to a registered state.\n                        if (this.shouldBeRegistered) this.attemptRegistration();\n                        break;\n                    case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Terminated:\n                        break;\n                    default:\n                        throw new Error(\"Unknown registerer state.\");\n                }\n            });\n        }\n        return this.attemptRegistration(true);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */ async unregister(registererUnregisterOptions) {\n        this.logger.log(`Unregistering UserAgent...`);\n        this.shouldBeRegistered = false;\n        if (!this.registerer) {\n            this.logger.warn(`No registerer to unregister.`);\n            return Promise.resolve();\n        }\n        return this.registerer.unregister(registererUnregisterOptions).then(()=>{\n            return;\n        });\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */ async call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`Beginning Session...`);\n        // Guard against a maximum number of pre-existing sessions.\n        // An incoming INVITE request may be received at any time and/or while in the process\n        // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n        const maxSessions = this.options.maxSimultaneousSessions;\n        if (maxSessions !== 0 && this.managedSessions.length > maxSessions) return Promise.reject(new Error(\"Maximum number of sessions already exists.\"));\n        const target = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(destination);\n        if (!target) return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        // Use our configured constraints as InviterOptions if none provided\n        if (!inviterOptions) inviterOptions = {};\n        if (!inviterOptions.sessionDescriptionHandlerOptions) inviterOptions.sessionDescriptionHandlerOptions = {};\n        if (!inviterOptions.sessionDescriptionHandlerOptions.constraints) inviterOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        // If utilizing early media, add a handler to catch 183 Session Progress\n        // messages and then to play the associated remote media (the early media).\n        if (inviterOptions.earlyMedia) {\n            inviterInviteOptions = inviterInviteOptions || {};\n            inviterInviteOptions.requestDelegate = inviterInviteOptions.requestDelegate || {};\n            const existingOnProgress = inviterInviteOptions.requestDelegate.onProgress;\n            inviterInviteOptions.requestDelegate.onProgress = (response)=>{\n                if (response.message.statusCode === 183) this.setupRemoteMedia(inviter);\n                existingOnProgress && existingOnProgress(response);\n            };\n        }\n        // TODO: Any existing onSessionDescriptionHandler is getting clobbered here.\n        // If we get a server reflexive candidate, stop waiting on ICE gathering to complete.\n        // The candidate is a server reflexive candidate; the ip indicates an intermediary\n        // address assigned by the STUN server to represent the candidate's peer anonymously.\n        if (this.options.iceStopWaitingOnServerReflexive) {\n            inviterOptions.delegate = inviterOptions.delegate || {};\n            inviterOptions.delegate.onSessionDescriptionHandler = (sessionDescriptionHandler)=>{\n                if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session description handler not instance of SessionDescriptionHandler\");\n                sessionDescriptionHandler.peerConnectionDelegate = {\n                    onicecandidate: (event)=>{\n                        var _a;\n                        if (((_a = event.candidate) === null || _a === void 0 ? void 0 : _a.type) === \"srflx\") {\n                            this.logger.log(`[${inviter.id}] Found srflx ICE candidate, stop waiting...`);\n                            // In sip.js > 0.20.1 this cast should be removed as iceGatheringComplete will be public\n                            const sdh = sessionDescriptionHandler;\n                            sdh.iceGatheringComplete();\n                        }\n                    }\n                };\n            };\n        }\n        // Create a new Inviter for the outgoing Session\n        const inviter = new (0, $989df868235ee8e3$export$2215cc52469fcfa0)(this.userAgent, target, inviterOptions);\n        // Send INVITE\n        return this.sendInvite(inviter, inviterOptions, inviterInviteOptions).then(()=>{\n            return inviter;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @param session - Session to hangup.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ async hangup(session) {\n        this.logger.log(`[${session.id}] Hangup...`);\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.terminate(session);\n    }\n    /**\n     * Answer an incoming call.\n     * @param session - Session to answer.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */ async answer(session, invitationAcceptOptions) {\n        this.logger.log(`[${session.id}] Accepting Invitation...`);\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        if (!(session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89))) return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        // Use our configured constraints as InvitationAcceptOptions if none provided\n        if (!invitationAcceptOptions) invitationAcceptOptions = {};\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions) invitationAcceptOptions.sessionDescriptionHandlerOptions = {};\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints) invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        return session.accept(invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @param session - Session to decline.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ async decline(session) {\n        this.logger.log(`[${session.id}] Rejecting Invitation...`);\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        if (!(session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89))) return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        return session.reject();\n    }\n    /**\n     * Hold call\n     * @param session - Session to hold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ async hold(session) {\n        this.logger.log(`[${session.id}] Holding session...`);\n        return this.setHold(session, true);\n    }\n    /**\n     * Unhold call.\n     * @param session - Session to unhold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ async unhold(session) {\n        this.logger.log(`[${session.id}] Unholding session...`);\n        return this.setHold(session, false);\n    }\n    /**\n     * Hold state.\n     * @param session - Session to check.\n     * @remarks\n     * True if session is on hold.\n     */ isHeld(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.held : false;\n    }\n    /**\n     * Mute call.\n     * @param session - Session to mute.\n     * @remarks\n     * Disable sender's media tracks.\n     */ mute(session) {\n        this.logger.log(`[${session.id}] Disabling media tracks...`);\n        this.setMute(session, true);\n    }\n    /**\n     * Unmute call.\n     * @param session - Session to unmute.\n     * @remarks\n     * Enable sender's media tracks.\n     */ unmute(session) {\n        this.logger.log(`[${session.id}] Enabling media tracks...`);\n        this.setMute(session, false);\n    }\n    /**\n     * Mute state.\n     * @param session - Session to check.\n     * @remarks\n     * True if sender's media track is disabled.\n     */ isMuted(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.muted : false;\n    }\n    /**\n     * Send DTMF.\n     * @param session - Session to send on.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */ async sendDTMF(session, tone) {\n        this.logger.log(`[${session.id}] Sending DTMF...`);\n        // Validate tone\n        if (!/^[0-9A-D#*,]$/.exec(tone)) return Promise.reject(new Error(\"Invalid DTMF tone.\"));\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        this.logger.log(`[${session.id}] Sending DTMF tone: ${tone}`);\n        if (this.options.sendDTMFUsingSessionDescriptionHandler) {\n            if (!session.sessionDescriptionHandler) return Promise.reject(new Error(\"Session desciption handler undefined.\"));\n            if (!session.sessionDescriptionHandler.sendDtmf(tone)) return Promise.reject(new Error(\"Failed to send DTMF\"));\n            return Promise.resolve();\n        } else {\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            // The UA MUST populate the \"application/dtmf-relay\" body, as defined\n            // earlier, with the button pressed and the duration it was pressed\n            // for.  Technically, this actually requires the INFO to be generated\n            // when the user *releases* the button, however if the user has still\n            // not released a button after 5 seconds, which is the maximum duration\n            // supported by this mechanism, the UA should generate the INFO at that\n            // time.\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00#section-5.3\n            const dtmf = tone;\n            const duration = 2000;\n            const body = {\n                contentDisposition: \"render\",\n                contentType: \"application/dtmf-relay\",\n                content: \"Signal=\" + dtmf + \"\\r\\nDuration=\" + duration\n            };\n            const requestOptions = {\n                body: body\n            };\n            return session.info({\n                requestOptions: requestOptions\n            }).then(()=>{\n                return;\n            });\n        }\n    }\n    /**\n     * Transfer.\n     * @param session - Session with the transferee to transfer.\n     * @param target - The referral target.\n     * @remarks\n     * If target is a Session this is an attended transfer completion (REFER with Replaces),\n     * otherwise this is a blind transfer (REFER). Attempting an attended transfer\n     * completion on a call that has not been answered will be rejected. To implement\n     * an attended transfer with early completion, hangup the call with the target\n     * and execute a blind transfer to the target.\n     */ async transfer(session, target, options) {\n        this.logger.log(`[${session.id}] Referring session...`);\n        if (target instanceof (0, $eae6918d36f972bb$export$1fb4852a55678982)) return session.refer(target, options).then(()=>{\n            return;\n        });\n        const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(target);\n        if (!uri) return Promise.reject(new Error(`Failed to create a valid URI from \"${target}\"`));\n        return session.refer(uri, options).then(()=>{\n            return;\n        });\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */ async message(destination, message) {\n        this.logger.log(`Sending message...`);\n        const target = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(destination);\n        if (!target) return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        return new (0, $1a5a7fa3a929ac56$export$9631269509c3d1fb)(this.userAgent, target, message).message();\n    }\n    /** Media constraints. */ get constraints() {\n        let constraints = {\n            audio: true,\n            video: false\n        }; // default to audio only calls\n        if (this.options.media.constraints) constraints = Object.assign({}, this.options.media.constraints);\n        return constraints;\n    }\n    /**\n     * Attempt reconnection up to `reconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */ attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (!this.shouldBeConnected) {\n            this.logger.log(`Should not be connected currently`);\n            return; // If intentionally disconnected, don't reconnect.\n        }\n        if (this.attemptingReconnection) this.logger.log(`Reconnection attempt already in progress`);\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Reconnection maximum attempts reached`);\n            return;\n        }\n        if (reconnectionAttempt === 1) this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        else this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying in ${reconnectionDelay} seconds`);\n        this.attemptingReconnection = true;\n        setTimeout(()=>{\n            if (!this.shouldBeConnected) {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - aborted`);\n                this.attemptingReconnection = false;\n                return; // If intentionally disconnected, don't reconnect.\n            }\n            this.userAgent.reconnect().then(()=>{\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n                this.attemptingReconnection = false;\n            }).catch((error)=>{\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.logger.error(error.message);\n                this.attemptingReconnection = false;\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Register to receive calls.\n     * @param withoutDelay - If true attempt immediately, otherwise wait `registrationRetryInterval`.\n     */ attemptRegistration(withoutDelay = false) {\n        this.logger.log(`Registration attempt ${withoutDelay ? \"without delay\" : \"\"}`);\n        if (!this.shouldBeRegistered) {\n            this.logger.log(`Should not be registered currently`);\n            return Promise.resolve();\n        }\n        // It only makes sense to have one attempt in progress at a time.\n        // Perhaps we shall (or should) try once again.\n        if (this.registrationAttemptTimeout !== undefined) {\n            this.logger.log(`Registration attempt already in progress`);\n            return Promise.resolve();\n        }\n        // Helper function to send the register request.\n        const _register = ()=>{\n            // If we do not have a registerer, it is not worth trying to register.\n            if (!this.registerer) {\n                this.logger.log(`Registerer undefined`);\n                return Promise.resolve();\n            }\n            // If the WebSocket transport is not connected, it is not worth trying to register.\n            // Perhpas we shall (or should) try once we are connected.\n            if (!this.isConnected()) {\n                this.logger.log(`User agent not connected`);\n                return Promise.resolve();\n            }\n            // If the UserAgent is stopped, it is not worth trying to register.\n            // Perhaps we shall (or should) try once the UserAgent is running.\n            if (this.userAgent.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) {\n                this.logger.log(`User agent stopped`);\n                return Promise.resolve();\n            }\n            // If no guard defined, we are good to proceed without any further ado.\n            if (!this.options.registerGuard) return this.registerer.register(this.registererRegisterOptions).then(()=>{\n                return;\n            });\n            // Otherwise check to make sure the guard does not want us halt.\n            return this.options.registerGuard().catch((error)=>{\n                this.logger.log(`Register guard rejected will making registration attempt`);\n                throw error;\n            }).then((halt)=>{\n                if (halt || !this.registerer) return Promise.resolve();\n                return this.registerer.register(this.registererRegisterOptions).then(()=>{\n                    return;\n                });\n            });\n        };\n        // Compute an amount of time in seconds to wait before sending another register request.\n        // This is a small attempt to avoid DOS attacking our own backend in the event that a\n        // relatively large number of clients sychonously keep retrying register reqeusts.\n        // This is known to happen when the backend goes down for a period and all clients\n        // are attempting to register again - the backend gets slammed with synced reqeusts.\n        const computeRegistrationTimeout = (lowerBound)=>{\n            const upperBound = lowerBound * 2;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        // Send register request after a delay\n        return new Promise((resolve, reject)=>{\n            this.registrationAttemptTimeout = setTimeout(()=>{\n                _register().then(()=>{\n                    this.registrationAttemptTimeout = undefined;\n                    resolve();\n                }).catch((error)=>{\n                    this.registrationAttemptTimeout = undefined;\n                    if (error instanceof (0, $92ef9568286e94e7$export$83a8f2b4495394c4)) resolve();\n                    else reject(error);\n                });\n            }, withoutDelay ? 0 : computeRegistrationTimeout(this.options.registrationRetryInterval));\n        });\n    }\n    /** Helper function to remove media from html elements. */ cleanupMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session does not exist.\");\n        if (managedSession.mediaLocal) {\n            if (managedSession.mediaLocal.video) {\n                managedSession.mediaLocal.video.srcObject = null;\n                managedSession.mediaLocal.video.pause();\n            }\n        }\n        if (managedSession.mediaRemote) {\n            if (managedSession.mediaRemote.audio) {\n                managedSession.mediaRemote.audio.srcObject = null;\n                managedSession.mediaRemote.audio.pause();\n            }\n            if (managedSession.mediaRemote.video) {\n                managedSession.mediaRemote.video.srcObject = null;\n                managedSession.mediaRemote.video.pause();\n            }\n        }\n    }\n    /** Helper function to enable/disable media tracks. */ enableReceiverTracks(session, enable) {\n        if (!this.sessionExists(session)) throw new Error(\"Session does not exist.\");\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        sessionDescriptionHandler.enableReceiverTracks(enable);\n    }\n    /** Helper function to enable/disable media tracks. */ enableSenderTracks(session, enable) {\n        if (!this.sessionExists(session)) throw new Error(\"Session does not exist.\");\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        sessionDescriptionHandler.enableSenderTracks(enable);\n    }\n    /**\n     * Setup session delegate and state change handler.\n     * @param session - Session to setup.\n     * @param referralInviterOptions - Options for any Inviter created as result of a REFER.\n     */ initSession(session, referralInviterOptions) {\n        // Add the session\n        this.sessionAdd(session);\n        // Call session created callback\n        if (this.delegate && this.delegate.onCallCreated) this.delegate.onCallCreated(session);\n        // Setup session state change handler\n        session.stateChange.addListener((state)=>{\n            this.logger.log(`[${session.id}] Session state changed to ${state}`);\n            switch(state){\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                    this.setupLocalMedia(session);\n                    this.setupRemoteMedia(session);\n                    if (this.delegate && this.delegate.onCallAnswered) this.delegate.onCallAnswered(session);\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                // fall through\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                    // This will already have executed if/when we fall\n                    // through from Terminating and thus the managed\n                    // session may already have been cleaned up.\n                    if (this.sessionExists(session)) {\n                        this.cleanupMedia(session);\n                        this.sessionRemove(session);\n                        if (this.delegate && this.delegate.onCallHangup) this.delegate.onCallHangup(session);\n                    }\n                    break;\n                default:\n                    throw new Error(\"Unknown session state.\");\n            }\n        });\n        // TODO: Any existing onInfo or onRefer delegate gets clobbered here.\n        // Setup delegate\n        session.delegate = session.delegate || {};\n        session.delegate.onInfo = (info)=>{\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            var _a;\n            // FIXME: TODO: We should reject correctly...\n            //\n            // If a UA receives an INFO request associated with an Info Package that\n            // the UA has not indicated willingness to receive, the UA MUST send a\n            // 469 (Bad Info Package) response (see Section 11.6), which contains a\n            // Recv-Info header field with Info Packages for which the UA is willing\n            // to receive INFO requests.\n            // https://tools.ietf.org/html/rfc6086#section-4.2.2\n            // No delegate\n            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === undefined) {\n                info.reject();\n                return;\n            }\n            // Invalid content type\n            const contentType = info.request.getHeader(\"content-type\");\n            if (!contentType || !/^application\\/dtmf-relay/i.exec(contentType)) {\n                info.reject();\n                return;\n            }\n            // Invalid body\n            const body = info.request.body.split(\"\\r\\n\", 2);\n            if (body.length !== 2) {\n                info.reject();\n                return;\n            }\n            // Invalid tone\n            let tone;\n            const toneRegExp = /^(Signal\\s*?=\\s*?)([0-9A-D#*]{1})(\\s)?.*/;\n            if (body[0] !== undefined && toneRegExp.test(body[0])) tone = body[0].replace(toneRegExp, \"$2\");\n            if (!tone) {\n                info.reject();\n                return;\n            }\n            // Invalid duration\n            let duration;\n            const durationRegExp = /^(Duration\\s?=\\s?)([0-9]{1,4})(\\s)?.*/;\n            if (body[1] !== undefined && durationRegExp.test(body[1])) duration = parseInt(body[1].replace(durationRegExp, \"$2\"), 10);\n            if (!duration) {\n                info.reject();\n                return;\n            }\n            info.accept().then(()=>{\n                if (this.delegate && this.delegate.onCallDTMFReceived) {\n                    if (!tone || !duration) throw new Error(\"Tone or duration undefined.\");\n                    this.delegate.onCallDTMFReceived(session, tone, duration);\n                }\n            }).catch((error)=>{\n                this.logger.error(error.message);\n            });\n        };\n        session.delegate.onRefer = (referral)=>{\n            referral.accept().then(()=>this.sendInvite(referral.makeInviter(referralInviterOptions), referralInviterOptions)).catch((error)=>{\n                this.logger.error(error.message);\n            });\n        };\n    }\n    /**\n     * Periodically send OPTIONS pings and disconnect when a ping fails.\n     * @param requestURI - Request URI to target\n     * @param fromURI - From URI\n     * @param toURI - To URI\n     */ optionsPingRun(requestURI, fromURI, toURI) {\n        // Guard against nvalid interval\n        if (this.options.optionsPingInterval < 1) throw new Error(\"Invalid options ping interval.\");\n        // Guard against sending a ping when there is one outstanading\n        if (this.optionsPingRunning) return;\n        this.optionsPingRunning = true;\n        // Setup next ping to run in future\n        this.optionsPingTimeout = setTimeout(()=>{\n            this.optionsPingTimeout = undefined;\n            // If ping succeeds...\n            const onPingSuccess = ()=>{\n                // record success or failure\n                this.optionsPingFailure = false;\n                // if we are still running, queue up the next ping\n                if (this.optionsPingRunning) {\n                    this.optionsPingRunning = false;\n                    this.optionsPingRun(requestURI, fromURI, toURI);\n                }\n            };\n            // If ping fails...\n            const onPingFailure = ()=>{\n                this.logger.error(\"OPTIONS ping failed\");\n                // record success or failure\n                this.optionsPingFailure = true;\n                // stop running\n                this.optionsPingRunning = false;\n                // disconnect the transport\n                this.userAgent.transport.disconnect().catch((error)=>this.logger.error(error));\n            };\n            // Create an OPTIONS request message\n            const core = this.userAgent.userAgentCore;\n            const message = core.makeOutgoingRequestMessage(\"OPTIONS\", requestURI, fromURI, toURI, {});\n            // Send the request message\n            this.optionsPingRequest = core.request(message, {\n                onAccept: ()=>{\n                    this.optionsPingRequest = undefined;\n                    onPingSuccess();\n                },\n                onReject: (response)=>{\n                    this.optionsPingRequest = undefined;\n                    // Ping fails on following responses...\n                    // - 408 Request Timeout (no response was received)\n                    // - 503 Service Unavailable (a transport layer error occured)\n                    if (response.message.statusCode === 408 || response.message.statusCode === 503) onPingFailure();\n                    else onPingSuccess();\n                }\n            });\n        }, this.options.optionsPingInterval * 1000);\n    }\n    /**\n     * Start sending OPTIONS pings.\n     */ optionsPingStart() {\n        this.logger.log(`OPTIONS pings started`);\n        // Create the URIs needed to send OPTIONS pings\n        let requestURI, fromURI, toURI;\n        if (this.options.optionsPingRequestURI) {\n            // Use whatever specific RURI is provided.\n            requestURI = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(this.options.optionsPingRequestURI);\n            if (!requestURI) throw new Error(\"Failed to create Request URI.\");\n            // Use the user agent's contact URI for From and To URIs\n            fromURI = this.userAgent.contact.uri.clone();\n            toURI = this.userAgent.contact.uri.clone();\n        } else if (this.options.aor) {\n            // Otherwise use the AOR provided to target the assocated registrar server.\n            const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(this.options.aor);\n            if (!uri) throw new Error(\"Failed to create URI.\");\n            requestURI = uri.clone();\n            requestURI.user = undefined; // target the registrar server\n            fromURI = uri.clone();\n            toURI = uri.clone();\n        } else {\n            this.logger.error(\"You have enabled sending OPTIONS pings and as such you must provide either a) an AOR to register, or b) an RURI to use for the target of the OPTIONS ping requests. \");\n            return;\n        }\n        // Send the OPTIONS pings\n        this.optionsPingRun(requestURI, fromURI, toURI);\n    }\n    /**\n     * Stop sending OPTIONS pings.\n     */ optionsPingStop() {\n        this.logger.log(`OPTIONS pings stopped`);\n        this.optionsPingRunning = false;\n        this.optionsPingFailure = false;\n        if (this.optionsPingRequest) {\n            this.optionsPingRequest.dispose();\n            this.optionsPingRequest = undefined;\n        }\n        if (this.optionsPingTimeout) {\n            clearTimeout(this.optionsPingTimeout);\n            this.optionsPingTimeout = undefined;\n        }\n    }\n    /** Helper function to init send then send invite. */ async sendInvite(inviter, inviterOptions, inviterInviteOptions) {\n        // Initialize our session\n        this.initSession(inviter, inviterOptions);\n        // Send the INVITE\n        return inviter.invite(inviterInviteOptions).then(()=>{\n            this.logger.log(`[${inviter.id}] Sent INVITE`);\n        });\n    }\n    /** Helper function to add a session to the ones we are managing. */ sessionAdd(session) {\n        const managedSession = this.options.managedSessionFactory(this, session);\n        this.managedSessions.push(managedSession);\n    }\n    /** Helper function to check if the session is one we are managing. */ sessionExists(session) {\n        return this.sessionManaged(session) !== undefined;\n    }\n    /** Helper function to check if the session is one we are managing. */ sessionManaged(session) {\n        return this.managedSessions.find((el)=>el.session.id === session.id);\n    }\n    /** Helper function to remoce a session from the ones we are managing. */ sessionRemove(session) {\n        this.managedSessions = this.managedSessions.filter((el)=>el.session.id !== session.id);\n    }\n    /**\n     * Puts Session on hold.\n     * @param session - The session to set.\n     * @param hold - Hold on if true, off if false.\n     */ async setHold(session, hold) {\n        if (!this.sessionExists(session)) return Promise.reject(new Error(\"Session does not exist.\"));\n        // Just resolve if we are already in correct state\n        if (this.isHeld(session) === hold) return Promise.resolve();\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof (0, $744f32b2d87f082d$export$4d703fa87dd9817a))) throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        const options = {\n            requestDelegate: {\n                onAccept: ()=>{\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = hold;\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) this.delegate.onCallHold(session, managedSession.held);\n                    }\n                },\n                onReject: ()=>{\n                    this.logger.warn(`[${session.id}] Re-invite request was rejected`);\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = !hold; // this was preemptively set so undo on failure\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) this.delegate.onCallHold(session, managedSession.held);\n                    }\n                }\n            }\n        };\n        // Session properties used to pass options to the SessionDescriptionHandler:\n        //\n        // 1) Session.sessionDescriptionHandlerOptions\n        //    SDH options for the initial INVITE transaction.\n        //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n        //\n        // 2) Session.sessionDescriptionHandlerOptionsReInvite\n        //    SDH options for re-INVITE transactions.\n        //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Session.invite().\n        const sessionDescriptionHandlerOptions = session.sessionDescriptionHandlerOptionsReInvite;\n        sessionDescriptionHandlerOptions.hold = hold;\n        session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n        // Preemptively and optimistically set held state (but do not call delegate).\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session is undefiend.\");\n        managedSession.held = hold;\n        // Send re-INVITE\n        return session.invite(options).then(()=>{\n            // Preemptively enable/disable tracks\n            const managedSession = this.sessionManaged(session);\n            if (managedSession !== undefined) {\n                this.enableReceiverTracks(session, !managedSession.held);\n                this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n            }\n        }).catch((error)=>{\n            managedSession.held = !hold; // was preemptively set so undo on failure\n            if (error instanceof (0, $92ef9568286e94e7$export$83a8f2b4495394c4)) this.logger.error(`[${session.id}] A hold request is already in progress.`);\n            throw error;\n        });\n    }\n    /**\n     * Puts Session on mute.\n     * @param session - The session to mute.\n     * @param mute - Mute on if true, off if false.\n     */ setMute(session, mute) {\n        if (!this.sessionExists(session)) {\n            this.logger.warn(`[${session.id}] A session is required to enabled/disable media tracks`);\n            return;\n        }\n        if (session.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n            this.logger.warn(`[${session.id}] An established session is required to enable/disable media tracks`);\n            return;\n        }\n        const managedSession = this.sessionManaged(session);\n        if (managedSession !== undefined) {\n            managedSession.muted = mute;\n            this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n        }\n    }\n    /** Helper function to attach local media to html elements. */ setupLocalMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session does not exist.\");\n        // Get the local media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaLocal = typeof this.options.media.local === \"function\" ? this.options.media.local(session) : this.options.media.local;\n        managedSession.mediaLocal = mediaLocal;\n        const mediaElement = mediaLocal === null || mediaLocal === void 0 ? void 0 : mediaLocal.video;\n        if (mediaElement) {\n            const localStream = this.getLocalMediaStream(session);\n            if (!localStream) throw new Error(\"Local media stream undefiend.\");\n            mediaElement.srcObject = localStream;\n            mediaElement.volume = 0;\n            mediaElement.play().catch((error)=>{\n                this.logger.error(`[${session.id}] Failed to play local media`);\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /** Helper function to attach remote media to html elements. */ setupRemoteMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) throw new Error(\"Managed session does not exist.\");\n        // Get the remote media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaRemote = typeof this.options.media.remote === \"function\" ? this.options.media.remote(session) : this.options.media.remote;\n        managedSession.mediaRemote = mediaRemote;\n        const mediaElement = (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.video) || (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.audio);\n        if (mediaElement) {\n            const remoteStream = this.getRemoteMediaStream(session);\n            if (!remoteStream) throw new Error(\"Remote media stream undefiend.\");\n            mediaElement.autoplay = true; // Safari hack, because you cannot call .play() from a non user action\n            mediaElement.srcObject = remoteStream;\n            mediaElement.play().catch((error)=>{\n                this.logger.error(`[${session.id}] Failed to play remote media`);\n                this.logger.error(error.message);\n            });\n            remoteStream.onaddtrack = ()=>{\n                this.logger.log(`Remote media onaddtrack`);\n                mediaElement.load(); // Safari hack, as it doesn't work otheriwse\n                mediaElement.play().catch((error)=>{\n                    this.logger.error(`[${session.id}] Failed to play remote media`);\n                    this.logger.error(error.message);\n                });\n            };\n        }\n    }\n    /**\n     * End a session.\n     * @param session - The session to terminate.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when Session is terminated.\n     */ async terminate(session) {\n        this.logger.log(`[${session.id}] Terminating...`);\n        switch(session.state){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                if (session instanceof (0, $989df868235ee8e3$export$2215cc52469fcfa0)) return session.cancel().then(()=>{\n                    this.logger.log(`[${session.id}] Inviter never sent INVITE (canceled)`);\n                });\n                else if (session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89)) return session.reject().then(()=>{\n                    this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                });\n                else throw new Error(\"Unknown session type.\");\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                if (session instanceof (0, $989df868235ee8e3$export$2215cc52469fcfa0)) return session.cancel().then(()=>{\n                    this.logger.log(`[${session.id}] Inviter canceled (sent CANCEL)`);\n                });\n                else if (session instanceof (0, $a6342d8a5fcabb95$export$d899bafc7f84ca89)) return session.reject().then(()=>{\n                    this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                });\n                else throw new Error(\"Unknown session type.\");\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                return session.bye().then(()=>{\n                    this.logger.log(`[${session.id}] Session ended (sent BYE)`);\n                });\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.log(`[${session.id}] Terminating in state ${session.state}, no action taken`);\n        return Promise.resolve();\n    }\n}\n\n\n$parcel$exportWildcard($a37506df75e7b770$exports, $6dd294c5c57173ab$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $2f3039e766a741e2$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $604c8363074a1f2a$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $90f33367fbfb4ac7$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $6a48556e30a930bb$exports);\n$parcel$exportWildcard($a37506df75e7b770$exports, $d5859fd1c29de512$exports);\n\n\nvar $4da2de395f5b2f91$exports = {};\n/**\n * A simple SIP user implementation for web browsers.\n * @packageDocumentation\n */ var $eed725d293b8fbd1$exports = {};\n\n$parcel$export($eed725d293b8fbd1$exports, \"SimpleUser\", () => $eed725d293b8fbd1$export$224a245426caf9e7);\n\nclass $eed725d293b8fbd1$export$224a245426caf9e7 {\n    /**\n     * Constructs a new instance of the `SimpleUser` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SimpleUserOptions} for details.\n     */ constructor(server, options = {}){\n        this.session = undefined;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({}, options);\n        // Session manager options\n        const sessionManagerOptions = {\n            aor: this.options.aor,\n            delegate: {\n                onCallAnswered: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallAnswered) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onCallCreated: (session)=>{\n                    var _a, _b;\n                    this.session = session;\n                    (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallCreated) === null || _b === void 0 || _b.call(_a);\n                },\n                onCallReceived: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallReceived) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onCallHangup: ()=>{\n                    var _a, _b;\n                    this.session = undefined;\n                    ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHangup) && ((_b = this.delegate) === null || _b === void 0 || _b.onCallHangup());\n                },\n                onCallHold: (s, held)=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHold) === null || _b === void 0 ? void 0 : _b.call(_a, held);\n                },\n                onCallDTMFReceived: (s, tone, dur)=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === null || _b === void 0 ? void 0 : _b.call(_a, tone, dur);\n                },\n                onMessageReceived: (message)=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onMessageReceived) === null || _b === void 0 ? void 0 : _b.call(_a, message.request.body);\n                },\n                onRegistered: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onRegistered) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onUnregistered: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onUnregistered) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onServerConnect: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerConnect) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onServerDisconnect: ()=>{\n                    var _a, _b;\n                    return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerDisconnect) === null || _b === void 0 ? void 0 : _b.call(_a);\n                }\n            },\n            maxSimultaneousSessions: 1,\n            media: this.options.media,\n            reconnectionAttempts: this.options.reconnectionAttempts,\n            reconnectionDelay: this.options.reconnectionDelay,\n            registererOptions: this.options.registererOptions,\n            sendDTMFUsingSessionDescriptionHandler: this.options.sendDTMFUsingSessionDescriptionHandler,\n            userAgentOptions: this.options.userAgentOptions\n        };\n        this.sessionManager = new (0, $d5859fd1c29de512$export$415798a788f40554)(server, sessionManagerOptions);\n        // Use the SIP.js logger\n        this.logger = this.sessionManager.userAgent.getLogger(\"sip.SimpleUser\");\n    }\n    /**\n     * Instance identifier.\n     * @internal\n     */ get id() {\n        return this.options.userAgentOptions && this.options.userAgentOptions.displayName || \"Anonymous\";\n    }\n    /** The local media stream. Undefined if call not answered. */ get localMediaStream() {\n        return this.session && this.sessionManager.getLocalMediaStream(this.session);\n    }\n    /** The remote media stream. Undefined if call not answered. */ get remoteMediaStream() {\n        return this.session && this.sessionManager.getRemoteMediaStream(this.session);\n    }\n    /**\n     * The local audio track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ get localAudioTrack() {\n        return this.session && this.sessionManager.getLocalAudioTrack(this.session);\n    }\n    /**\n     * The local video track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */ get localVideoTrack() {\n        return this.session && this.sessionManager.getLocalVideoTrack(this.session);\n    }\n    /**\n     * The remote audio track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ get remoteAudioTrack() {\n        return this.session && this.sessionManager.getRemoteAudioTrack(this.session);\n    }\n    /**\n     * The remote video track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */ get remoteVideoTrack() {\n        return this.session && this.sessionManager.getRemoteVideoTrack(this.session);\n    }\n    /**\n     * Connect.\n     * @remarks\n     * Start the UserAgent's WebSocket Transport.\n     */ connect() {\n        this.logger.log(`[${this.id}] Connecting UserAgent...`);\n        return this.sessionManager.connect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * Stop the UserAgent's WebSocket Transport.\n     */ disconnect() {\n        this.logger.log(`[${this.id}] Disconnecting UserAgent...`);\n        return this.sessionManager.disconnect();\n    }\n    /**\n     * Return true if connected.\n     */ isConnected() {\n        return this.sessionManager.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     */ register(registererRegisterOptions) {\n        this.logger.log(`[${this.id}] Registering UserAgent...`);\n        return this.sessionManager.register(registererRegisterOptions);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */ unregister(registererUnregisterOptions) {\n        this.logger.log(`[${this.id}] Unregistering UserAgent...`);\n        return this.sessionManager.unregister(registererUnregisterOptions);\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */ call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`[${this.id}] Beginning Session...`);\n        if (this.session) return Promise.reject(new Error(\"Session already exists.\"));\n        return this.sessionManager.call(destination, inviterOptions, inviterInviteOptions).then(()=>{\n            return;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ hangup() {\n        this.logger.log(`[${this.id}] Hangup...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.hangup(this.session).then(()=>{\n            this.session = undefined;\n        });\n    }\n    /**\n     * Answer an incoming call.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */ answer(invitationAcceptOptions) {\n        this.logger.log(`[${this.id}] Accepting Invitation...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.answer(this.session, invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */ decline() {\n        this.logger.log(`[${this.id}] rejecting Invitation...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.decline(this.session);\n    }\n    /**\n     * Hold call\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ hold() {\n        this.logger.log(`[${this.id}] holding session...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.hold(this.session);\n    }\n    /**\n     * Unhold call.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */ unhold() {\n        this.logger.log(`[${this.id}] unholding session...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.unhold(this.session);\n    }\n    /**\n     * Hold state.\n     * @remarks\n     * True if session is on hold.\n     */ isHeld() {\n        return this.session ? this.sessionManager.isHeld(this.session) : false;\n    }\n    /**\n     * Mute call.\n     * @remarks\n     * Disable sender's media tracks.\n     */ mute() {\n        this.logger.log(`[${this.id}] disabling media tracks...`);\n        return this.session && this.sessionManager.mute(this.session);\n    }\n    /**\n     * Unmute call.\n     * @remarks\n     * Enable sender's media tracks.\n     */ unmute() {\n        this.logger.log(`[${this.id}] enabling media tracks...`);\n        return this.session && this.sessionManager.unmute(this.session);\n    }\n    /**\n     * Mute state.\n     * @remarks\n     * True if sender's media track is disabled.\n     */ isMuted() {\n        return this.session ? this.sessionManager.isMuted(this.session) : false;\n    }\n    /**\n     * Send DTMF.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */ sendDTMF(tone) {\n        this.logger.log(`[${this.id}] sending DTMF...`);\n        if (!this.session) return Promise.reject(new Error(\"Session does not exist.\"));\n        return this.sessionManager.sendDTMF(this.session, tone);\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */ message(destination, message) {\n        this.logger.log(`[${this.id}] sending message...`);\n        return this.sessionManager.message(destination, message);\n    }\n}\n\n\nvar $13c2bc08c5d1f259$exports = {};\n\n\nvar $161f11ab5f4c47f2$exports = {};\n\n\n$parcel$exportWildcard($4da2de395f5b2f91$exports, $eed725d293b8fbd1$exports);\n$parcel$exportWildcard($4da2de395f5b2f91$exports, $13c2bc08c5d1f259$exports);\n$parcel$exportWildcard($4da2de395f5b2f91$exports, $161f11ab5f4c47f2$exports);\n\n\nvar $59b1bbf7f3145b7c$exports = {};\n/**\n * A Transport implementation for web browsers.\n * @packageDocumentation\n */ \nvar $9bf80e44dacc954e$exports = {};\n\n\n$parcel$exportWildcard($59b1bbf7f3145b7c$exports, $9cf814dc8665aa70$exports);\n$parcel$exportWildcard($59b1bbf7f3145b7c$exports, $9bf80e44dacc954e$exports);\n\n\n$parcel$exportWildcard($71514f66503c648c$exports, $afd7e7a9fe59c60f$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $b6727c6f0668df8e$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $a37506df75e7b770$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $4da2de395f5b2f91$exports);\n$parcel$exportWildcard($71514f66503c648c$exports, $59b1bbf7f3145b7c$exports);\n\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\nconst $e469250112f23c01$export$ada873a34909da65 = {\n    Transport: {\n        Connecting: \"connecting\",\n        Connected: \"connected\",\n        Disconnecting: \"disconnecting\",\n        Disconnected: \"disconnected\",\n        ConnectionAttemptFailure: \"wsConnectionError\",\n        ConnectionFailure: \"transportError\",\n        SwitchBackToMainProxy: \"switchBackProxy\",\n        Closed: \"closed\"\n    },\n    UserAgent: {\n        Registered: \"registered\",\n        Unregistered: \"unregistered\",\n        RegistrationFailed: \"registrationFailed\",\n        InviteSent: \"inviteSent\",\n        Invite: \"invite\",\n        ProvisionUpdate: \"provisionUpdate\",\n        Started: \"started\",\n        Stopped: \"stopped\"\n    },\n    Session: {\n        Accepted: \"accepted\",\n        Progress: \"progress\",\n        Muted: \"muted\",\n        Unmuted: \"unmuted\",\n        Establishing: \"establishing\",\n        Established: \"established\",\n        Terminating: \"terminating\",\n        Terminated: \"terminated\",\n        UpdateReceived: \"updateReceived\",\n        MoveToRcv: \"moveToRcv\",\n        QOSPublished: \"qos-published\",\n        RTPStat: \"rtpStat\",\n        UserMediaFailed: \"userMediaFailed\"\n    }\n};\n\n\nfunction $69d2e7242b6c53d5$export$483c730d9fd36349(transport, options) {\n    transport.reconnectionAttempts = 0;\n    transport.sipErrorCodes = options.sipErrorCodes;\n    transport.servers = options.transportServers;\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    transport.on = eventEmitter.on.bind(eventEmitter);\n    transport.off = eventEmitter.off.bind(eventEmitter);\n    transport.once = eventEmitter.once.bind(eventEmitter);\n    transport.addListener = eventEmitter.addListener.bind(eventEmitter);\n    transport.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    transport.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n    transport.emit = eventEmitter.emit.bind(eventEmitter);\n    transport.mainProxy = options.transportServers[0];\n    transport.switchBackInterval = options.switchBackInterval;\n    transport.reconnectionTimeout = options.reconnectionTimeout;\n    transport.maxReconnectionAttempts = options.maxReconnectionAttempts;\n    transport.__afterWSConnected = $69d2e7242b6c53d5$var$__afterWSConnected.bind(transport);\n    transport.__clearSwitchBackToMainProxyTimer = $69d2e7242b6c53d5$var$__clearSwitchBackToMainProxyTimer.bind(transport);\n    transport.__computeRandomTimeout = $69d2e7242b6c53d5$var$__computeRandomTimeout.bind(transport);\n    transport.__connect = transport.connect;\n    transport.__isCurrentMainProxy = $69d2e7242b6c53d5$var$__isCurrentMainProxy.bind(transport);\n    transport.__onConnectedToBackup = $69d2e7242b6c53d5$var$__onConnectedToBackup.bind(transport);\n    transport.__onConnectedToMain = $69d2e7242b6c53d5$var$__onConnectedToMain.bind(transport);\n    transport.__resetServersErrorStatus = $69d2e7242b6c53d5$var$__resetServersErrorStatus.bind(transport);\n    transport.__scheduleSwitchBackToMainProxy = $69d2e7242b6c53d5$var$__scheduleSwitchBackToMainProxy.bind(transport);\n    transport.__setServerIsError = $69d2e7242b6c53d5$var$__setServerIsError.bind(transport);\n    transport.connect = $69d2e7242b6c53d5$var$__connect.bind(transport);\n    transport.getNextWsServer = $69d2e7242b6c53d5$var$getNextWsServer.bind(transport);\n    transport.isSipErrorCode = $69d2e7242b6c53d5$var$isSipErrorCode.bind(transport);\n    transport.noAvailableServers = $69d2e7242b6c53d5$var$noAvailableServers.bind(transport);\n    transport.onSipErrorCode = $69d2e7242b6c53d5$var$onSipErrorCode.bind(transport);\n    transport.reconnect = $69d2e7242b6c53d5$var$reconnect.bind(transport);\n    transport.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connecting:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Connecting);\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Connected:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Connected);\n                transport.__afterWSConnected();\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnecting:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Disconnecting);\n                break;\n            case (0, $d7bd026653891694$export$4157d41c66f4c7e1).Disconnected:\n                transport.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Disconnected);\n                break;\n        }\n    });\n    return transport;\n}\nfunction $69d2e7242b6c53d5$var$__connect() {\n    return this.__connect().catch(async (e)=>{\n        this.logger.error(`unable to establish connection to server ${this.server} - ${e.message}`);\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.ConnectionAttemptFailure, e); // Can we move to onTransportDisconnect?\n        await this.reconnect();\n    });\n}\nfunction $69d2e7242b6c53d5$var$__computeRandomTimeout(reconnectionAttempts = 1, randomMinInterval = 0, randomMaxInterval = 0) {\n    if (randomMinInterval < 0 || randomMaxInterval < 0 || reconnectionAttempts < 1) throw new Error(\"Arguments must be positive numbers\");\n    const randomInterval = Math.floor(Math.random() * Math.abs(randomMaxInterval - randomMinInterval)) + randomMinInterval;\n    const retryOffset = (reconnectionAttempts - 1) * (randomMinInterval + randomMaxInterval) / 2;\n    return randomInterval + retryOffset;\n}\nfunction $69d2e7242b6c53d5$var$__setServerIsError(uri) {\n    this.servers.forEach((server)=>{\n        if (server.uri === uri && !server.isError) server.isError = true;\n    });\n}\nfunction $69d2e7242b6c53d5$var$__resetServersErrorStatus() {\n    this.servers.forEach((server)=>{\n        server.isError = false;\n    });\n}\nfunction $69d2e7242b6c53d5$var$__isCurrentMainProxy() {\n    return this.server === this.servers[0].uri;\n}\nfunction $69d2e7242b6c53d5$var$__afterWSConnected() {\n    this.__isCurrentMainProxy() ? this.__onConnectedToMain() : this.__onConnectedToBackup();\n}\nfunction $69d2e7242b6c53d5$var$__onConnectedToMain() {\n    this.__clearSwitchBackToMainProxyTimer();\n}\nfunction $69d2e7242b6c53d5$var$__onConnectedToBackup() {\n    if (!this.switchBackToMainProxyTimer) this.__scheduleSwitchBackToMainProxy();\n}\nfunction $69d2e7242b6c53d5$var$__scheduleSwitchBackToMainProxy() {\n    const randomInterval = 900000; // 15 min\n    let switchBackInterval = this.switchBackInterval ? this.switchBackInterval * 1000 : null;\n    // Add random time to expand clients connections in time;\n    if (switchBackInterval) {\n        switchBackInterval += this.__computeRandomTimeout(1, 0, randomInterval);\n        this.logger.warn(\"Try to switch back to main proxy after \" + Math.round(switchBackInterval / 1000 / 60) + \" min\");\n        this.switchBackToMainProxyTimer = setTimeout(()=>{\n            this.switchBackToMainProxyTimer = null;\n            this.logger.warn(\"switchBack initiated\");\n            this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.SwitchBackToMainProxy);\n        // FIXME: Why is force reconnect not called here and the client is made to do that?\n        }, switchBackInterval);\n    } else this.logger.warn(\"switchBackInterval is not set. Will be switched with next provision update \");\n}\nfunction $69d2e7242b6c53d5$var$__clearSwitchBackToMainProxyTimer() {\n    if (this.switchBackToMainProxyTimer) {\n        clearTimeout(this.switchBackToMainProxyTimer);\n        this.switchBackToMainProxyTimer = null;\n    }\n}\nasync function $69d2e7242b6c53d5$var$reconnect(forceReconnectToMain) {\n    if (this.reconnectionAttempts > 0) this.logger.warn(`Reconnection attempt ${this.reconnectionAttempts} failed`);\n    if (this.reconnectTimer) {\n        this.logger.warn(\"already trying to reconnect\");\n        return;\n    }\n    if (forceReconnectToMain) {\n        this.logger.warn(\"forcing connect to main WS server\");\n        await this.disconnect();\n        this.server = this.getNextWsServer(true).uri;\n        this.reconnectionAttempts = 0;\n        await this.connect();\n        return;\n    }\n    if (this.isConnected()) {\n        this.logger.warn(\"attempted to reconnect while connected - forcing disconnect\");\n        await this.disconnect();\n        await this.reconnect();\n        return;\n    }\n    if (this.noAvailableServers()) {\n        this.logger.warn(\"no available WebSocket servers left\");\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.Closed);\n        this.__resetServersErrorStatus();\n        this.server = this.getNextWsServer(true).uri;\n        this.__clearSwitchBackToMainProxyTimer();\n        return;\n    }\n    this.reconnectionAttempts += 1;\n    if (this.reconnectionAttempts > this.maxReconnectionAttempts) {\n        this.logger.warn(`maximum reconnection attempts for WebSocket ${this.server}`);\n        this.logger.warn(`transport ${this.server} failed`);\n        this.__setServerIsError(this.server);\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.ConnectionFailure);\n        const nextServer = this.getNextWsServer();\n        if (!nextServer) {\n            // No more servers available to try connecting to\n            this.logger.error(\"unable to connect to any transport\");\n            return;\n        }\n        this.configuration.server = nextServer.uri;\n        this.reconnectionAttempts = 0;\n        await this.connect();\n    } else {\n        const randomMinInterval = (this.reconnectionTimeout - 2) * 1000;\n        const randomMaxInterval = (this.reconnectionTimeout + 2) * 1000;\n        this.nextReconnectInterval = this.__computeRandomTimeout(this.reconnectionAttempts, randomMinInterval, randomMaxInterval);\n        this.logger.warn(`trying to reconnect to WebSocket ${this.server} (reconnection attempt: ${this.reconnectionAttempts})`);\n        this.reconnectTimer = setTimeout(()=>{\n            this.reconnectTimer = undefined;\n            this.connect().then(()=>{\n                this.reconnectionAttempts = 0;\n            });\n        }, this.nextReconnectInterval);\n        this.logger.warn(`next reconnection attempt in: ${Math.round(this.nextReconnectInterval / 1000)} seconds.`);\n    }\n}\nfunction $69d2e7242b6c53d5$var$getNextWsServer(force = false) {\n    // Adding the force check because otherwise it will not bypass error check\n    if (!force && this.noAvailableServers()) {\n        this.logger.warn(\"attempted to get next ws server but there are no available ws servers left\");\n        return;\n    }\n    const candidates = force ? this.servers : this.servers.filter(({ isError: isError })=>!isError);\n    return candidates[0];\n}\nfunction $69d2e7242b6c53d5$var$noAvailableServers() {\n    return this.servers.every(({ isError: isError })=>isError);\n}\nfunction $69d2e7242b6c53d5$var$isSipErrorCode(statusCode) {\n    if (!statusCode) return false;\n    if (!this.sipErrorCodes) return false;\n    return this.sipErrorCodes.indexOf(statusCode.toString()) !== -1;\n}\nasync function $69d2e7242b6c53d5$var$onSipErrorCode() {\n    this.logger.warn(\"Error received from the server. Disconnecting from the proxy\");\n    this.__setServerIsError(this.server);\n    this.emit((0, $e469250112f23c01$export$ada873a34909da65).Transport.ConnectionFailure);\n    this.reconnectionAttempts = 0;\n    return this.reconnect();\n}\n\n\nclass $d7cdbcd3a3602964$export$d828144089ea9387 {\n    /** Current volume */ volume;\n    _enabled;\n    _incoming;\n    _outgoing;\n    _audio;\n    constructor(options = {}){\n        this._enabled = !!options.enabled;\n        this.loadAudio(options);\n    }\n    /** Load incoming and outgoing audio files for feedback */ loadAudio(options) {\n        this._incoming = options.incoming;\n        this._outgoing = options.outgoing;\n        this._audio = {};\n    }\n    /** Set volume for incoming and outgoing feedback */ setVolume(_volume) {\n        let volume = _volume;\n        if (volume < 0) volume = 0;\n        if (volume > 1) volume = 1;\n        this.volume = volume;\n        for(const url in this._audio)if (Object.hasOwn(this._audio, url)) this._audio[url].volume = volume;\n    }\n    /**\n   * Play or pause incoming feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */ playIncoming(value) {\n        return this._playSound(this._incoming, value, this.volume ?? 0.5);\n    }\n    /**\n   * Play or pause outgoing feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */ playOutgoing(value) {\n        return this._playSound(this._outgoing, value, this.volume ?? 1);\n    }\n    _playSound(url, val, volume) {\n        if (!this._enabled || !url || !this._audio) return this;\n        if (!this._audio[url]) {\n            if (val) {\n                this._audio[url] = new Audio();\n                this._audio[url].src = url;\n                this._audio[url].loop = true;\n                this._audio[url].volume = volume;\n                this._audio[url].playPromise = this._audio[url].play();\n            }\n        } else if (val) {\n            this._audio[url].currentTime = 0;\n            this._audio[url].playPromise = this._audio[url].play();\n        } else {\n            const audio = this._audio[url];\n            if (audio.playPromise !== undefined) audio.playPromise.then(()=>{\n                audio.pause();\n            });\n        }\n        return this;\n    }\n}\n\n\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\n\n\nconst $df5bef30413a053b$export$31b40729666a4ae0 = ()=>\"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, (c)=>{\n        const r = Math.random() * 16 | 0;\n        const v = c === \"x\" ? r : r & 0x3 | 0x8;\n        return v.toString(16);\n    });\nconst $df5bef30413a053b$export$8b58be045bf06082 = (dst = {}, src = {})=>Object.assign(dst || {}, src || {});\n\n\nconst $9ecda7333d28e490$export$defe85febe8b728c = {\n    park: {\n        reqid: 1,\n        command: \"callpark\"\n    },\n    startRecord: {\n        reqid: 2,\n        command: \"startcallrecord\"\n    },\n    stopRecord: {\n        reqid: 3,\n        command: \"stopcallrecord\"\n    },\n    flip: {\n        reqid: 3,\n        command: \"callflip\",\n        target: \"\"\n    },\n    monitor: {\n        reqid: 4,\n        command: \"monitor\"\n    },\n    barge: {\n        reqid: 5,\n        command: \"barge\"\n    },\n    whisper: {\n        reqid: 6,\n        command: \"whisper\"\n    },\n    takeover: {\n        reqid: 7,\n        command: \"takeover\"\n    },\n    toVoicemail: {\n        reqid: 11,\n        command: \"toVoicemail\"\n    },\n    ignore: {\n        reqid: 12,\n        command: \"ignore\"\n    },\n    receiveConfirm: {\n        reqid: 17,\n        command: \"receiveConfirm\"\n    },\n    replyWithMessage: {\n        reqid: 14,\n        command: \"replyWithMessage\"\n    }\n};\nconst $9ecda7333d28e490$export$1a2a4672f2aa1318 = \"rc-webPhone-uuid\";\nconst $9ecda7333d28e490$export$2cd411766cb0f9c = 60000;\nconst $9ecda7333d28e490$export$5ba7149a85c7d1a0 = {\n    audio: true,\n    video: false\n};\nconst $9ecda7333d28e490$export$40da5b911536ffbf = [\n    \"stun.l.google.com:19302\"\n];\nconst $9ecda7333d28e490$export$483a720d1bace4cd = [\n    \"408\",\n    \"502\",\n    \"503\",\n    \"504\"\n];\nconst $9ecda7333d28e490$export$731d8a9cb69e4934 = \"debug\";\n\n\n/*\n * @Author: Elias Sun(elias.sun@ringcentral.com)\n * @Date: Dec. 15, 2018\n * Copyright © RingCentral. All rights reserved.\n */ \nvar $557a2ee3af030028$var$ConnectionState;\n(function(ConnectionState) {\n    ConnectionState[\"new\"] = \"mediaConnectionStateNew\";\n    ConnectionState[\"checking\"] = \"mediaConnectionStateChecking\";\n    ConnectionState[\"connected\"] = \"mediaConnectionStateConnected\";\n    ConnectionState[\"completed\"] = \"mediaConnectionStateCompleted\";\n    ConnectionState[\"failed\"] = \"mediaConnectionStateFailed\";\n    ConnectionState[\"disconnected\"] = \"mediaConnectionStateDisconnected\";\n    ConnectionState[\"closed\"] = \"mediaConnectionStateClosed\";\n})($557a2ee3af030028$var$ConnectionState || ($557a2ee3af030028$var$ConnectionState = {}));\nvar $557a2ee3af030028$export$c4be745dbdec8b4;\n(function(Browsers) {\n    Browsers[\"MSIE\"] = \"IE\";\n    Browsers[\"Chrome\"] = \"Chrome\";\n    Browsers[\"Firefox\"] = \"Firefox\";\n    Browsers[\"Safari\"] = \"Safari\";\n    Browsers[\"Opera\"] = \"Opera\";\n})($557a2ee3af030028$export$c4be745dbdec8b4 || ($557a2ee3af030028$export$c4be745dbdec8b4 = {}));\nclass $557a2ee3af030028$export$d2e4c86c27c7559f {\n    outboundRtpReport = {};\n    inboundRtpReport = {};\n    rttMs = {};\n    localCandidates = [];\n    remoteCandidates = [];\n    transport = {};\n}\nclass $557a2ee3af030028$export$2e2bcd8739ae039 {\n    /**\n   * Reference to MediaStreamsImpl object. This Object has all the functions to handle media streams\n   *\n   * MediaStreams class is a wrapper around MediaStreamsImpl\n   */ mediaStreamsImpl;\n    /** Remove iceconnectionstatechange event listeners and stop collecting stats */ release;\n    /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */ reconnectMedia;\n    /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */ getMediaStats;\n    /** Stop collecting stats */ stopMediaStats;\n    constructor(session){\n        this.mediaStreamsImpl = new $557a2ee3af030028$export$2f9419ea90201913(session);\n        this.release = this.mediaStreamsImpl.release.bind(this.mediaStreamsImpl);\n        this.reconnectMedia = this.mediaStreamsImpl.reconnectMedia.bind(this.mediaStreamsImpl);\n        this.getMediaStats = this.mediaStreamsImpl.getMediaStats.bind(this.mediaStreamsImpl);\n        this.stopMediaStats = this.mediaStreamsImpl.stopMediaStats.bind(this.mediaStreamsImpl);\n    }\n    /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */ set onRTPStat(callback) {\n        this.mediaStreamsImpl.onRTPStat = callback;\n    }\n    get onRTPStat() {\n        return this.mediaStreamsImpl.onRTPStat;\n    }\n    /**\n   * Set a function to be called when `peerConnetion` iceconnectionstatechange changes\n   * @param callback function to be called when `peerConnetion` iceconnectionstatechange changes\n   */ set onMediaConnectionStateChange(callback) {\n        this.mediaStreamsImpl.onMediaConnectionStateChange = callback;\n    }\n    get onMediaConnectionStateChange() {\n        return this.mediaStreamsImpl.onMediaConnectionStateChange;\n    }\n}\nclass $557a2ee3af030028$export$2f9419ea90201913 {\n    preRTT;\n    /**\n   * Set a function to be called when `peerConnection` iceconnectionstatechange changes\n   *\n   * @param callback function to be called when `peerConnection` iceconnectionstatechange changes\n   */ onMediaConnectionStateChange;\n    /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */ onRTPStat;\n    ktag = \"MediaStreams\";\n    session;\n    isChrome;\n    isFirefox;\n    isSafari;\n    mediaStatsTimer;\n    constructor(session){\n        this.ktag = \"MediaStreams\";\n        if (!session) throw new Error(`${this.ktag}: Cannot initial media stream monitoring. Session is not passed`);\n        this.session = session;\n        this.onMediaConnectionStateChange = undefined;\n        this.onPeerConnectionStateChange = this.onPeerConnectionStateChange.bind(this);\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        sessionDescriptionHandler.peerConnection.addEventListener(\"iceconnectionstatechange\", this.onPeerConnectionStateChange);\n        this.isChrome = this.browser() === \"Chrome\";\n        this.isFirefox = this.browser() === \"Firefox\";\n        this.isSafari = this.browser() === \"Safari\";\n        this.preRTT = {\n            currentRoundTripTime: 0\n        };\n        if (!this.isChrome && !this.isFirefox && !this.isSafari) this.session.logger.error(`${this.ktag} The web browser ${this.browser()} is not in the recommended list [Chrome, Safari, Firefox] !`);\n    }\n    /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */ getMediaStats(callback, interval = 1000) {\n        if (!this.onRTPStat && !callback) {\n            this.session.logger.debug(`${this.ktag}: No event callback provided to call when media starts are generated`);\n            return;\n        }\n        if (callback) this.onRTPStat = callback;\n        if (this.mediaStatsTimer) {\n            clearTimeout(this.mediaStatsTimer);\n            this.mediaStatsTimer = null;\n        }\n        this.mediaStatsTimer = setInterval(()=>{\n            this.mediaStatsTimerCallback();\n        }, interval);\n    }\n    /**\n   * Stop collecting stats. This will stop calling the registered function (either that was registered using `onRTPstat` or using `getMediaStats`)\n   */ stopMediaStats() {\n        if (this.mediaStatsTimer) {\n            clearTimeout(this.mediaStatsTimer);\n            this.onRTPStat = undefined;\n        }\n    }\n    /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */ reconnectMedia() {\n        return new Promise((resolve, reject)=>{\n            this.session.reinvite().then(()=>resolve()).catch(reject);\n        });\n    }\n    /**\n   * Remove iceconnectionstatechange event listeners and stop collecting stats\n   */ release() {\n        if (this.mediaStatsTimer) {\n            clearTimeout(this.mediaStatsTimer);\n            this.mediaStatsTimer = null;\n        }\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        if (!sessionDescriptionHandler.peerConnection) return;\n        sessionDescriptionHandler.peerConnection.removeEventListener(\"iceconnectionstatechange\", this.onPeerConnectionStateChange);\n    }\n    get tag() {\n        return this.ktag;\n    }\n    /**\n   * Function to find what browser is being used depending on the `navigator.userAgent` value\n   * @returns Browsers enum value to denote what browser if being used\n   */ browser() {\n        if (navigator.userAgent.search(\"MSIE\") >= 0) return \"IE\";\n        else if (navigator.userAgent.search(\"Chrome\") >= 0) return \"Chrome\";\n        else if (navigator.userAgent.search(\"Firefox\") >= 0) return \"Firefox\";\n        else if (navigator.userAgent.search(\"Safari\") >= 0 && navigator.userAgent.search(\"Chrome\") < 0) return \"Safari\";\n        else if (navigator.userAgent.search(\"Opera\") >= 0) return \"Opera\";\n        return \"unknown\";\n    }\n    mediaStatsTimerCallback() {\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        const peerConnection = sessionDescriptionHandler.peerConnection;\n        if (!peerConnection) {\n            this.session.logger.error(`${this.ktag}: The peer connection cannot be null`);\n            return;\n        }\n        const connectionState = peerConnection.iceConnectionState;\n        if (connectionState !== \"connected\" && connectionState !== \"completed\") {\n            this.preRTT.currentRoundTripTime = 0;\n            return;\n        }\n        this.getRTPReport(new $557a2ee3af030028$export$d2e4c86c27c7559f());\n    }\n    onPeerConnectionStateChange() {\n        let eventName = \"unknown\";\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        const state = sessionDescriptionHandler.peerConnection.iceConnectionState;\n        if (Object.hasOwn($557a2ee3af030028$var$ConnectionState, state)) {\n            eventName = $557a2ee3af030028$var$ConnectionState[state];\n            if (this.onMediaConnectionStateChange) this.onMediaConnectionStateChange(eventName, this.session);\n            this.session.emit(eventName);\n        } else this.session.logger.debug(`${this.tag}: Unknown peerConnection state: ${state}`);\n        this.session.logger.debug(`${this.tag}: peerConnection State: ${state}`);\n    }\n    async getRTPReport(report) {\n        const sessionDescriptionHandler = this.session.sessionDescriptionHandler;\n        const peerConnection = sessionDescriptionHandler.peerConnection;\n        try {\n            const stats = await peerConnection.getStats();\n            stats.forEach((stat)=>{\n                switch(stat.type){\n                    case \"inbound-rtp\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"bytesReceived\":\n                                case \"packetsReceived\":\n                                case \"jitter\":\n                                case \"packetsLost\":\n                                case \"fractionLost\":\n                                case \"mediaType\":\n                                    report.inboundRtpReport[statName] = stat[statName];\n                                    break;\n                                case \"roundTripTime\":\n                                    report.rttMs[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    case \"outbound-rtp\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"bytesSent\":\n                                case \"packetsSent\":\n                                case \"mediaType\":\n                                    report.outboundRtpReport[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    case \"candidate-pair\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"currentRoundTripTime\":\n                                    report.rttMs[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    case \"local-candidate\":\n                        {\n                            const local_candidate = {};\n                            Object.keys(stat).forEach((statName)=>{\n                                switch(statName){\n                                    case \"id\":\n                                    case \"isRemote\":\n                                    case \"ip\":\n                                    case \"candidateType\":\n                                    case \"networkType\":\n                                    case \"priority\":\n                                    case \"port\":\n                                        local_candidate[statName] = stat[statName];\n                                        break;\n                                }\n                            });\n                            report.localCandidates.push(local_candidate);\n                            break;\n                        }\n                    case \"remote-candidate\":\n                        {\n                            const remote_candidate = {};\n                            Object.keys(stat).forEach((statName)=>{\n                                switch(statName){\n                                    case \"id\":\n                                    case \"isRemote\":\n                                    case \"ip\":\n                                    case \"priority\":\n                                    case \"port\":\n                                    case \"candidateType\":\n                                        remote_candidate[statName] = stat[statName];\n                                        break;\n                                }\n                            });\n                            report.remoteCandidates.push(remote_candidate);\n                            break;\n                        }\n                    case \"media-source\":\n                        report.outboundRtpReport.rtpLocalAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n                        break;\n                    case \"track\":\n                        if (!stat.remoteSource) break;\n                        report.inboundRtpReport.rtpRemoteAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n                        break;\n                    case \"transport\":\n                        Object.keys(stat).forEach((statName)=>{\n                            switch(statName){\n                                case \"dtlsState\":\n                                case \"packetsSent\":\n                                case \"packetsReceived\":\n                                case \"selectedCandidatePairChanges\":\n                                case \"selectedCandidatePairId\":\n                                    report.transport[statName] = stat[statName];\n                                    break;\n                            }\n                        });\n                        break;\n                    default:\n                        break;\n                }\n            });\n            if (!Object.hasOwn(report.rttMs, \"currentRoundTripTime\")) {\n                if (!Object.hasOwn(report.rttMs, \"roundTripTime\")) report.rttMs.currentRoundTripTime = this.preRTT.currentRoundTripTime;\n                else {\n                    report.rttMs.currentRoundTripTime = report.rttMs.roundTripTime; // for Firefox\n                    delete report.rttMs.roundTripTime;\n                }\n            } else report.rttMs.currentRoundTripTime = Math.round(report.rttMs.currentRoundTripTime * 1000);\n            if (Object.hasOwn(report.rttMs, \"currentRoundTripTime\")) this.preRTT.currentRoundTripTime = report.rttMs.currentRoundTripTime;\n            this.onRTPStat(report, this.session);\n            this.session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.RTPStat, report);\n        } catch (e) {\n            this.session.logger.error(`${this.tag}: Unable to get media stats: ${e.message}`);\n        }\n    }\n}\n\n\nfunction $0fa0cda49b523db1$export$ce9161a35b9f9ac4(report) {\n    if (!report.inboundRtpReport) return true;\n    if (!report.outboundRtpReport) return true;\n    if (report.inboundRtpReport.packetsReceived === 0 || report.outboundRtpReport.packetsSent === 0) return true;\n    return false;\n}\n\n\n\n\n\n\n/**\n * {@link Publisher} state.\n * @remarks\n * The {@link Publisher} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                  __________________________________________\n *                 |  __________________________              |\n * Publisher       | |                          v             v\n * Constructed -> Initial -> Published -> Unpublished -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */ var $2af1ef8c111a9103$export$4d381a3f3c9c9827;\n(function(PublisherState) {\n    PublisherState[\"Initial\"] = \"Initial\";\n    PublisherState[\"Published\"] = \"Published\";\n    PublisherState[\"Unpublished\"] = \"Unpublished\";\n    PublisherState[\"Terminated\"] = \"Terminated\";\n})($2af1ef8c111a9103$export$4d381a3f3c9c9827 = $2af1ef8c111a9103$export$4d381a3f3c9c9827 || ($2af1ef8c111a9103$export$4d381a3f3c9c9827 = {}));\n\n\nclass $3c8038551aa85175$export$9abcd9565debde5d {\n    /**\n     * Constructs a new instance of the `Publisher` class.\n     *\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param eventType - The event type identifying the published document.\n     * @param options - Options bucket. See {@link PublisherOptions} for details.\n     */ constructor(userAgent, targetURI, eventType, options = {}){\n        this.disposed = false;\n        /** The publication state. */ this._state = (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Initial;\n        // state emitter\n        this._stateEventEmitter = new (0, $3f66d713440d295c$export$765f30f7b0920a6c)();\n        this.userAgent = userAgent;\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.contentType = options.contentType || \"text/plain\";\n        if (typeof options.expires !== \"number\" || options.expires % 1 !== 0) options.expires = 3600;\n        else options.expires = Number(options.expires);\n        if (typeof options.unpublishOnClose !== \"boolean\") options.unpublishOnClose = true;\n        this.target = targetURI;\n        this.event = eventType;\n        this.options = options;\n        this.pubRequestExpires = options.expires;\n        this.logger = userAgent.getLogger(\"sip.Publisher\");\n        const params = options.params || {};\n        const fromURI = params.fromUri ? params.fromUri : userAgent.userAgentCore.configuration.aor;\n        const toURI = params.toUri ? params.toUri : targetURI;\n        let body;\n        if (options.body && options.contentType) {\n            const contentDisposition = \"render\";\n            const contentType = options.contentType;\n            const content = options.body;\n            body = {\n                contentDisposition: contentDisposition,\n                contentType: contentType,\n                content: content\n            };\n        }\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PUBLISH, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // Identifier\n        this.id = this.target.toString() + \":\" + this.event;\n        // Add to the user agent's publisher collection.\n        this.userAgent._publishers[this.id] = this;\n    }\n    /**\n     * Destructor.\n     */ dispose() {\n        if (this.disposed) return Promise.resolve();\n        this.disposed = true;\n        this.logger.log(`Publisher ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's publisher collection\n        delete this.userAgent._publishers[this.id];\n        // Send unpublish, if requested\n        if (this.options.unpublishOnClose && this.state === (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published) return this.unpublish();\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        this.pubRequestEtag = undefined;\n        return Promise.resolve();\n    }\n    /** The publication state. */ get state() {\n        return this._state;\n    }\n    /** Emits when the publisher state changes. */ get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * Publish.\n     * @param content - Body to publish\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    publish(content, options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // is Initial or Modify request\n        this.options.body = content;\n        this.pubRequestBody = this.options.body;\n        if (this.pubRequestExpires === 0) {\n            // This is Initial request after unpublish\n            if (this.options.expires === undefined) throw new Error(\"Expires undefined.\");\n            this.pubRequestExpires = this.options.expires;\n            this.pubRequestEtag = undefined;\n        }\n        this.sendPublishRequest();\n        return Promise.resolve();\n    }\n    /**\n     * Unpublish.\n     */ // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    unpublish(options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        if (this.pubRequestEtag !== undefined) this.sendPublishRequest();\n        return Promise.resolve();\n    }\n    /** @internal */ receiveResponse(response) {\n        const statusCode = response.statusCode || 0;\n        switch(true){\n            case /^1[0-9]{2}$/.test(statusCode.toString()):\n                break;\n            case /^2[0-9]{2}$/.test(statusCode.toString()):\n                // Set SIP-Etag\n                if (response.hasHeader(\"SIP-ETag\")) this.pubRequestEtag = response.getHeader(\"SIP-ETag\");\n                else this.logger.warn(\"SIP-ETag header missing in a 200-class response to PUBLISH\");\n                // Update Expire\n                if (response.hasHeader(\"Expires\")) {\n                    const expires = Number(response.getHeader(\"Expires\"));\n                    if (typeof expires === \"number\" && expires >= 0 && expires <= this.pubRequestExpires) this.pubRequestExpires = expires;\n                    else this.logger.warn(\"Bad Expires header in a 200-class response to PUBLISH\");\n                } else this.logger.warn(\"Expires header missing in a 200-class response to PUBLISH\");\n                if (this.pubRequestExpires !== 0) {\n                    // Schedule refresh\n                    this.publishRefreshTimer = setTimeout(()=>this.refreshRequest(), this.pubRequestExpires * 900);\n                    if (this._state !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published) this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published);\n                } else this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                break;\n            case /^412$/.test(statusCode.toString()):\n                // 412 code means no matching ETag - possibly the PUBLISH expired\n                // Resubmit as new request, if the current request is not a \"remove\"\n                if (this.pubRequestEtag !== undefined && this.pubRequestExpires !== 0) {\n                    this.logger.warn(\"412 response to PUBLISH, recovering\");\n                    this.pubRequestEtag = undefined;\n                    if (this.options.body === undefined) throw new Error(\"Body undefined.\");\n                    this.publish(this.options.body);\n                } else {\n                    this.logger.warn(\"412 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                }\n                break;\n            case /^423$/.test(statusCode.toString()):\n                // 423 code means we need to adjust the Expires interval up\n                if (this.pubRequestExpires !== 0 && response.hasHeader(\"Min-Expires\")) {\n                    const minExpires = Number(response.getHeader(\"Min-Expires\"));\n                    if (typeof minExpires === \"number\" || minExpires > this.pubRequestExpires) {\n                        this.logger.warn(\"423 code in response to PUBLISH, adjusting the Expires value and trying to recover\");\n                        this.pubRequestExpires = minExpires;\n                        if (this.options.body === undefined) throw new Error(\"Body undefined.\");\n                        this.publish(this.options.body);\n                    } else {\n                        this.logger.warn(\"Bad 423 response Min-Expires header received for PUBLISH\");\n                        this.pubRequestExpires = 0;\n                        this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                        this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                    }\n                } else {\n                    this.logger.warn(\"423 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                    this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                }\n                break;\n            default:\n                this.pubRequestExpires = 0;\n                this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished);\n                this.stateTransition((0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated);\n                break;\n        }\n        // Do the cleanup\n        if (this.pubRequestExpires === 0) {\n            if (this.publishRefreshTimer) {\n                clearTimeout(this.publishRefreshTimer);\n                this.publishRefreshTimer = undefined;\n            }\n            this.pubRequestBody = undefined;\n            this.pubRequestEtag = undefined;\n        }\n    }\n    /** @internal */ send() {\n        return this.userAgent.userAgentCore.publish(this.request, {\n            onAccept: (response)=>this.receiveResponse(response.message),\n            onProgress: (response)=>this.receiveResponse(response.message),\n            onRedirect: (response)=>this.receiveResponse(response.message),\n            onReject: (response)=>this.receiveResponse(response.message),\n            onTrying: (response)=>this.receiveResponse(response.message)\n        });\n    }\n    refreshRequest() {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // This is Refresh request\n        this.pubRequestBody = undefined;\n        if (this.pubRequestEtag === undefined) throw new Error(\"Etag undefined\");\n        if (this.pubRequestExpires === 0) throw new Error(\"Expires zero\");\n        this.sendPublishRequest();\n    }\n    sendPublishRequest() {\n        const reqOptions = Object.assign({}, this.options);\n        reqOptions.extraHeaders = (this.options.extraHeaders || []).slice();\n        reqOptions.extraHeaders.push(\"Event: \" + this.event);\n        reqOptions.extraHeaders.push(\"Expires: \" + this.pubRequestExpires);\n        if (this.pubRequestEtag !== undefined) reqOptions.extraHeaders.push(\"SIP-If-Match: \" + this.pubRequestEtag);\n        const ruri = this.target;\n        const params = this.options.params || {};\n        let bodyAndContentType;\n        if (this.pubRequestBody !== undefined) {\n            if (this.options.contentType === undefined) throw new Error(\"Content type undefined.\");\n            bodyAndContentType = {\n                body: this.pubRequestBody,\n                contentType: this.options.contentType\n            };\n        }\n        let body;\n        if (bodyAndContentType) body = (0, $35e2f96fad41499f$export$46b123b754f2f425)(bodyAndContentType);\n        this.request = this.userAgent.userAgentCore.makeOutgoingRequestMessage((0, $ea4e4d873ec3240b$export$e7094788287c5e9b).PUBLISH, ruri, params.fromUri ? params.fromUri : this.userAgent.userAgentCore.configuration.aor, params.toUri ? params.toUri : this.target, params, reqOptions.extraHeaders, body);\n        return this.send();\n    }\n    /**\n     * Transition publication state.\n     */ stateTransition(newState) {\n        const invalidTransition = ()=>{\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch(this._state){\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Initial:\n                if (newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) invalidTransition();\n                break;\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published:\n                if (newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) invalidTransition();\n                break;\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Unpublished:\n                if (newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Published && newState !== (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) invalidTransition();\n                break;\n            case (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Publication transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === (0, $2af1ef8c111a9103$export$4d381a3f3c9c9827).Terminated) this.dispose();\n    }\n}\n\n\n\nconst $9e1ab2fd2078bd8c$var$formatFloat = (input)=>parseFloat(input.toString()).toFixed(2);\nconst $9e1ab2fd2078bd8c$export$f03888bc45437819 = (session)=>{\n    const qosStatsObj = $9e1ab2fd2078bd8c$var$getQoSStatsTemplate();\n    qosStatsObj.callID = session.request.callId || \"\";\n    qosStatsObj.fromTag = session.request.fromTag || \"\";\n    qosStatsObj.toTag = session.request.toTag || \"\";\n    qosStatsObj.localID = session.request.getHeader(\"From\");\n    qosStatsObj.remoteID = session.request.getHeader(\"To\");\n    qosStatsObj.origID = session.request.getHeader(\"From\");\n    const refreshIntervalId = setInterval(async ()=>{\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!sessionDescriptionHandler?.peerConnection) {\n            session.logger.error(\"There is no PeerConnection, can not getStats\");\n            return;\n        }\n        const getStatsResult = await sessionDescriptionHandler.peerConnection.getStats();\n        session.logger.log(`getStatsResult ${JSON.stringify(getStatsResult)}`);\n        qosStatsObj.status = true;\n        let network = \"\";\n        getStatsResult.forEach((item)=>{\n            switch(item.type){\n                case \"local-candidate\":\n                    if (item.candidateType === \"srflx\") {\n                        network = typeof item.networkType === \"string\" ? item.networkType : $9e1ab2fd2078bd8c$var$getNetworkType(item.networkType);\n                        qosStatsObj.localAddr = item.ip + \":\" + item.port;\n                        qosStatsObj.localcandidate = item;\n                    }\n                    break;\n                case \"remote-candidate\":\n                    if (item.candidateType === \"host\") {\n                        qosStatsObj.remoteAddr = item.ip + \":\" + item.port;\n                        qosStatsObj.remotecandidate = item;\n                    }\n                    break;\n                case \"inbound-rtp\":\n                    {\n                        qosStatsObj.jitterBufferDiscardRate = item.packetsDiscarded / item.packetsReceived;\n                        qosStatsObj.inboundPacketsLost = item.packetsLost;\n                        qosStatsObj.inboundPacketsReceived = item.packetsReceived; // packetsReceived\n                        const jitterBufferMs = parseFloat(item.jitterBufferEmittedCount) > 0 ? parseFloat(item.jitterBufferDelay) / parseFloat(item.jitterBufferEmittedCount) * 1000 : 0;\n                        qosStatsObj.totalSumJitter += jitterBufferMs;\n                        qosStatsObj.totalIntervalCount += 1;\n                        qosStatsObj.NLR = $9e1ab2fd2078bd8c$var$formatFloat(item.packetsLost / (item.packetsLost + item.packetsReceived) * 100);\n                        qosStatsObj.JBM = Math.max(qosStatsObj.JBM, jitterBufferMs);\n                        qosStatsObj.netType = $9e1ab2fd2078bd8c$var$addToMap(qosStatsObj.netType, network);\n                        break;\n                    }\n                case \"candidate-pair\":\n                    qosStatsObj.RTD = Math.round(item.currentRoundTripTime / 2 * 1000);\n                    break;\n                case \"outbound-rtp\":\n                    qosStatsObj.outboundPacketsSent = item.packetsSent;\n                    break;\n                case \"remote-inbound-rtp\":\n                    qosStatsObj.outboundPacketsLost = item.packetsLost;\n                    break;\n                default:\n                    break;\n            }\n        });\n    }, session.userAgent.qosCollectInterval);\n    session.stateChange.addListener((newState)=>{\n        if (newState === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated) {\n            session.logger.log(\"Release media streams\");\n            session.mediaStreams?.release();\n            $9e1ab2fd2078bd8c$var$publishQosStats(session, qosStatsObj);\n            refreshIntervalId && clearInterval(refreshIntervalId);\n        }\n    });\n};\nconst $9e1ab2fd2078bd8c$var$publishQosStats = async (session, qosStatsObj, _options = {})=>{\n    const options = _options || {};\n    const targetUrl = options.targetUrl || \"sip:rtcpxr@rtcpxr.ringcentral.com:5060\";\n    const event = options.event || \"vq-rtcpxr\";\n    options.expires = 60;\n    options.contentType = \"application/vq-rtcpxr\";\n    options.extraHeaders = (options.extraHeaders || []).concat(session.userAgent.defaultHeaders);\n    const cpuOS = session.__qosStats.cpuOS;\n    const cpuRC = session.__qosStats.cpuRC;\n    const ram = session.__qosStats.ram;\n    const networkType = session.__qosStats.netType || $9e1ab2fd2078bd8c$var$calculateNetworkUsage(qosStatsObj) || \"\";\n    let effectiveType = \"\";\n    if (\"connection\" in navigator) effectiveType = navigator.connection.effectiveType;\n    options.extraHeaders.push(`p-rc-client-info:cpuRC=${cpuRC};cpuOS=${cpuOS};netType=${networkType};ram=${ram};effectiveType=${effectiveType}`);\n    session.logger.log(`QOS stats ${JSON.stringify(qosStatsObj)}`);\n    const calculatedStatsObj = $9e1ab2fd2078bd8c$var$calculateStats(qosStatsObj);\n    const body = $9e1ab2fd2078bd8c$var$createPublishBody(calculatedStatsObj);\n    const publisher = new (0, $3c8038551aa85175$export$9abcd9565debde5d)(session.userAgent, (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(targetUrl), event, options);\n    await publisher.publish(body);\n    session.logger.log(\"Local Candidate: \" + JSON.stringify(qosStatsObj.localcandidate));\n    session.logger.log(\"Remote Candidate: \" + JSON.stringify(qosStatsObj.remotecandidate));\n    qosStatsObj.status = false;\n    await publisher.dispose();\n    session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.QOSPublished, body);\n};\nconst $9e1ab2fd2078bd8c$var$calculateNetworkUsage = (qosStatsObj)=>{\n    const networkType = [];\n    for (const [key, value] of Object.entries(qosStatsObj.netType))networkType.push(key + \":\" + $9e1ab2fd2078bd8c$var$formatFloat(value * 100 / qosStatsObj.totalIntervalCount));\n    return networkType.join();\n};\nconst $9e1ab2fd2078bd8c$var$calculateStats = (qosStatsObj)=>{\n    const rawNLR = qosStatsObj.inboundPacketsLost * 100 / (qosStatsObj.inboundPacketsReceived + qosStatsObj.inboundPacketsLost) || 0;\n    const rawJBN = qosStatsObj.totalIntervalCount > 0 ? qosStatsObj.totalSumJitter / qosStatsObj.totalIntervalCount : 0;\n    return {\n        ...qosStatsObj,\n        NLR: $9e1ab2fd2078bd8c$var$formatFloat(rawNLR),\n        JBN: $9e1ab2fd2078bd8c$var$formatFloat(rawJBN),\n        JDR: $9e1ab2fd2078bd8c$var$formatFloat(qosStatsObj.jitterBufferDiscardRate),\n        MOSLQ: $9e1ab2fd2078bd8c$var$calculateMos(qosStatsObj.inboundPacketsLost / (qosStatsObj.inboundPacketsLost + qosStatsObj.inboundPacketsReceived)),\n        MOSCQ: $9e1ab2fd2078bd8c$var$calculateMos(qosStatsObj.outboundPacketsLost / (qosStatsObj.outboundPacketsLost + qosStatsObj.outboundPacketsSent))\n    };\n};\nconst $9e1ab2fd2078bd8c$var$createPublishBody = (calculatedStatsObj)=>{\n    const NLR = calculatedStatsObj.NLR || 0;\n    const JBM = calculatedStatsObj.JBM || 0;\n    const JBN = calculatedStatsObj.JBN || 0;\n    const JDR = calculatedStatsObj.JDR || 0;\n    const MOSLQ = calculatedStatsObj.MOSLQ || 0;\n    const MOSCQ = calculatedStatsObj.MOSCQ || 0;\n    const RTD = calculatedStatsObj.RTD || 0;\n    const callID = calculatedStatsObj.callID || \"\";\n    const fromTag = calculatedStatsObj.fromTag || \"\";\n    const toTag = calculatedStatsObj.toTag || \"\";\n    const localId = calculatedStatsObj.localID || \"\";\n    const remoteId = calculatedStatsObj.remoteID || \"\";\n    const localAddr = calculatedStatsObj.localAddr || \"\";\n    const remoteAddr = calculatedStatsObj.remoteAddr || \"\";\n    return \"VQSessionReport: CallTerm\\r\\n\" + `CallID: ${callID}\\r\\n` + `LocalID: ${localId}\\r\\n` + `RemoteID: ${remoteId}\\r\\n` + `OrigID: ${localId}\\r\\n` + `LocalAddr: IP=${localAddr} SSRC=0x00000000\\r\\n` + `RemoteAddr: IP=${remoteAddr} SSRC=0x00000000\\r\\n` + \"LocalMetrics:\\r\\n\" + \"Timestamps: START=0 STOP=0\\r\\n\" + \"SessionDesc: PT=0 PD=opus SR=0 FD=0 FPP=0 PPS=0 PLC=0 SSUP=on\\r\\n\" + `JitterBuffer: JBA=0 JBR=0 JBN=${JBN} JBM=${$9e1ab2fd2078bd8c$var$formatFloat(JBM)} JBX=0\\r\\n` + `PacketLoss: NLR=${NLR} JDR=${JDR}\\r\\n` + \"BurstGapLoss: BLD=0 BD=0 GLD=0 GD=0 GMIN=0\\r\\n\" + `Delay: RTD=${RTD} ESD=0 SOWD=0 IAJ=0\\r\\n` + `QualityEst: MOSLQ=${$9e1ab2fd2078bd8c$var$formatFloat(MOSLQ)} MOSCQ=${$9e1ab2fd2078bd8c$var$formatFloat(MOSCQ)}\\r\\n` + `DialogID: ${callID};to-tag=${toTag};from-tag=${fromTag}`;\n};\nconst $9e1ab2fd2078bd8c$var$getQoSStatsTemplate = ()=>({\n        localAddr: \"\",\n        remoteAddr: \"\",\n        callID: \"\",\n        localID: \"\",\n        remoteID: \"\",\n        origID: \"\",\n        fromTag: \"\",\n        toTag: \"\",\n        timestamp: {\n            start: \"\",\n            stop: \"\"\n        },\n        netType: {},\n        jitterBufferNominal: 0,\n        jitterBufferMax: 0,\n        jitterBufferDiscardRate: 0,\n        totalSumJitter: 0,\n        totalIntervalCount: 0,\n        NLR: \"\",\n        JBM: 0,\n        JBN: \"\",\n        JDR: \"\",\n        MOSLQ: 0,\n        MOSCQ: 0,\n        RTD: 0,\n        status: false,\n        localcandidate: {},\n        remotecandidate: {},\n        inboundPacketsLost: 0,\n        inboundPacketsReceived: 0,\n        outboundPacketsLost: 0,\n        outboundPacketsSent: 0\n    });\nconst $9e1ab2fd2078bd8c$var$addToMap = (map = {}, key)=>({\n        ...map,\n        [key]: (key in map ? parseInt(map[key], 10) : 0) + 1\n    });\nconst $9e1ab2fd2078bd8c$var$networkTypeMap = {\n    bluetooth: \"Bluetooth\",\n    cellular: \"Cellulars\",\n    ethernet: \"Ethernet\",\n    wifi: \"WiFi\",\n    vpn: \"VPN\",\n    wimax: \"WiMax\",\n    \"2g\": \"2G\",\n    \"3g\": \"3G\",\n    \"4g\": \"4G\"\n};\n// TODO: find reliable way to find network type , use navigator.connection.type?\nconst $9e1ab2fd2078bd8c$var$getNetworkType = (connectionType)=>{\n    const sysNetwork = connectionType.systemNetworkType || \"unknown\";\n    const localNetwork = connectionType || \"unknown\";\n    const networkType = !sysNetwork || sysNetwork === \"unknown\" ? localNetwork : sysNetwork;\n    return networkType in $9e1ab2fd2078bd8c$var$networkTypeMap ? $9e1ab2fd2078bd8c$var$networkTypeMap[networkType] : networkType;\n};\nfunction $9e1ab2fd2078bd8c$var$calculateMos(packetLoss) {\n    if (packetLoss <= 0.008) return 4.5;\n    if (packetLoss > 0.45) return 1.0;\n    const bpl = 17.2647;\n    const r = 93.2062077233 - 95.0 * (packetLoss * 100 / (packetLoss * 100 + bpl)) + 4;\n    let mos = 2.06405 + 0.031738 * r - 0.000356641 * r * r + 2.93143 * Math.pow(10, -6) * r * r * r;\n    if (mos < 1) return 1.0;\n    if (mos > 4.5) return 4.5;\n    if (packetLoss >= 0.35 && mos > 2.7) mos = 2.7;\n    else if (packetLoss >= 0.3 && mos > 3.0) mos = 3.0;\n    else if (packetLoss >= 0.2 && mos > 3.6) mos = 3.6;\n    else if (packetLoss >= 0.15 && mos > 3.7) mos = 3.7;\n    else if (packetLoss >= 0.1 && mos > 3.9) mos = 4.1;\n    else if (packetLoss >= 0.05 && mos > 4.1) mos = 4.3;\n    else if (packetLoss >= 0.03 && mos > 4.1) mos = 4.4;\n    return mos;\n}\n\n\nclass $7fe4376d5b6c2e01$export$1ae48eba03bc0682 {\n    /** @ignore */ __isRecording;\n    /** @ignore */ __localHold;\n    /** @ignore */ __patched;\n    /** @ignore */ __userAgentCoreEventsSetup;\n    /** Flag to check if the call is on hold or not */ held;\n    /** Options to represent dom elements where media stream should be loaded */ media;\n    /** Flag to indicate if media stats are being collected */ mediaStatsStarted;\n    /** MediaStreams class instance which has the logic to collect media stream stats */ mediaStreams;\n    /** Flag to check if the call is muted or not */ muted;\n    /** Counter to represent how many media stats report were missed because of no audio */ noAudioReportCount;\n    /** JOSN representation of RC headers received for an incoming call */ rcHeaders;\n    __qosStats;\n    /** Flag to represent if reinvite request was sent because there was no audio reported */ reinviteForNoAudioSent;\n    /** Time when session was started */ startTime;\n    /** @ignore */ __accept;\n    /** @ignore */ __dispose;\n    /** Method to attach event listener for session specific events */ addListener;\n    /** Add track to media source */ addTrack;\n    /** RingCentral barge implementation */ barge;\n    /** RingCentral blind transfer implementation */ blindTransfer;\n    /**\n   * @internal\n   * Helper function which represents if call control features can be used or not\n   */ canUseRCMCallControl;\n    /**\n   * @internal\n   * Create session message which would be sent to the RingCentral backend\n   */ createSessionMessage;\n    /** Sends a DTMF over the call */ dtmf;\n    /** Emit session specific events which will trigger all the event listeners attached */ emit;\n    /** RingCentral flip implementation */ flip;\n    /** RingCentral flip implementation */ forward;\n    /** Put the call on hold */ hold;\n    /** Ignore incoming call */ ignore;\n    /** Mute the call */ mute;\n    /** Remove event listener */ off;\n    /** Add event listener. Same as addListener */ on;\n    /** Add once event listener. Same as addListener */ once;\n    /** Returns if the call is on hold locally or not */ onLocalHold;\n    /** RingCentral park implementation */ park;\n    /** Send a session reinvite */ reinvite;\n    /** Remove event listener */ removeListener;\n    /** Remove all event listeners */ removeAllListeners;\n    /** RingCentral reply with message implementation */ replyWithMessage;\n    /**\n   * @internal\n   * Helper method that sends an INFO request to other user agent and then waits for an INFO request from the other user agent\n   */ sendInfoAndReceiveResponse;\n    /**\n   * @internal\n   * Helper function to send INFO request with `move` instruction to RingCentral backend\n   */ sendMoveResponse;\n    /** Send `receiveConfirm` command to backend */ sendReceiveConfirm;\n    /** Helper function to send session message to backend using UserAgent */ sendSessionMessage;\n    /** Start recording the call */ startRecord;\n    /** Function to stop collecting media stats */ stopMediaStats;\n    /** Stop recording the call */ stopRecord;\n    /** Send incoming call to voicemail */ toVoicemail;\n    /** Transfer current call */ transfer;\n    /** Put the call on unhold */ unhold;\n    /** Unmute the call */ unmute;\n    /** RingCentral warm transfer implementation */ warmTransfer;\n    /** RingCentral whisper implementation */ whisper;\n    setQosStats;\n}\nconst $7fe4376d5b6c2e01$var$mediaCheckTimer = 2000;\nfunction $7fe4376d5b6c2e01$export$859ed353f486f09(session) {\n    if (session.__patched) return session;\n    session.__patched = true;\n    session.held = false;\n    session.muted = false;\n    session.media = session.userAgent.media;\n    session.__dispose = session.dispose.bind(session);\n    session.dispose = $7fe4376d5b6c2e01$var$dispose.bind(session);\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    session.on = eventEmitter.on.bind(eventEmitter);\n    session.off = eventEmitter.off.bind(eventEmitter);\n    session.once = eventEmitter.once.bind(eventEmitter);\n    session.addListener = eventEmitter.addListener.bind(eventEmitter);\n    session.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    session.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n    session.emit = eventEmitter.emit.bind(eventEmitter);\n    session.sendInfoAndReceiveResponse = $7fe4376d5b6c2e01$var$sendInfoAndReceiveResponse.bind(session);\n    session.startRecord = $7fe4376d5b6c2e01$var$startRecord.bind(session);\n    session.stopRecord = $7fe4376d5b6c2e01$var$stopRecord.bind(session);\n    session.sendMoveResponse = $7fe4376d5b6c2e01$var$sendMoveResponse.bind(session);\n    session.park = $7fe4376d5b6c2e01$var$park.bind(session);\n    session.flip = $7fe4376d5b6c2e01$var$flip.bind(session);\n    session.whisper = $7fe4376d5b6c2e01$var$whisper.bind(session);\n    session.barge = $7fe4376d5b6c2e01$var$barge.bind(session);\n    session.mute = $7fe4376d5b6c2e01$var$mute.bind(session);\n    session.unmute = $7fe4376d5b6c2e01$var$unmute.bind(session);\n    session.addTrack = $7fe4376d5b6c2e01$var$addTrack.bind(session);\n    session.stopMediaStats = $7fe4376d5b6c2e01$var$stopMediaStats.bind(session);\n    session.warmTransfer = $7fe4376d5b6c2e01$var$warmTransfer.bind(session);\n    session.blindTransfer = $7fe4376d5b6c2e01$var$blindTransfer.bind(session);\n    session.transfer = $7fe4376d5b6c2e01$var$transfer.bind(session);\n    session.hold = $7fe4376d5b6c2e01$var$hold.bind(session);\n    session.unhold = $7fe4376d5b6c2e01$var$unhold.bind(session);\n    session.dtmf = $7fe4376d5b6c2e01$var$dtmf.bind(session);\n    session.reinvite = $7fe4376d5b6c2e01$var$reinvite.bind(session);\n    session.forward = $7fe4376d5b6c2e01$var$forward.bind(session); // FIXME: Not needed?\n    session.__qosStats = {};\n    session.setQosStats = $7fe4376d5b6c2e01$var$setQosStats.bind(session);\n    $7fe4376d5b6c2e01$var$setupUserAgentCoreEvent(session);\n    session.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Establishing);\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                $7fe4376d5b6c2e01$var$stopPlaying(session);\n                session.addTrack();\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Established);\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                $7fe4376d5b6c2e01$var$stopPlaying(session);\n                $7fe4376d5b6c2e01$var$stopMediaStreamStats(session);\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Terminating);\n                break;\n            case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                $7fe4376d5b6c2e01$var$stopPlaying(session);\n                session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Terminated);\n                break;\n        }\n    });\n    // FIXME: Do we need this? The replaced session is part of existing sessions and would have already been patched\n    // NEEDED - inviter.ts L191\n    // session.on(\"replaced\", patchWebphoneSession);\n    if (session.userAgent.onSession) session.userAgent.onSession(session);\n    session.mediaStatsStarted = false;\n    session.noAudioReportCount = 0;\n    session.reinviteForNoAudioSent = false;\n    return session;\n}\nfunction $7fe4376d5b6c2e01$export$457de3b0bdcdb849(session) {\n    try {\n        $7fe4376d5b6c2e01$var$parseRcHeader(session);\n    } catch (e) {\n        session.logger.error(\"Can't parse RC headers from invite request due to \" + e);\n    }\n    session.canUseRCMCallControl = $7fe4376d5b6c2e01$var$canUseRCMCallControl.bind(session);\n    session.createSessionMessage = $7fe4376d5b6c2e01$var$createSessionMessage.bind(session);\n    session.ignore = $7fe4376d5b6c2e01$var$ignore.bind(session);\n    session.replyWithMessage = $7fe4376d5b6c2e01$var$replyWithMessage.bind(session);\n    session.sendReceiveConfirm = $7fe4376d5b6c2e01$var$sendReceiveConfirm.bind(session);\n    session.sendSessionMessage = $7fe4376d5b6c2e01$var$sendSessionMessage.bind(session);\n    session.toVoicemail = $7fe4376d5b6c2e01$var$toVoicemail.bind(session);\n    session.__accept = session.accept.bind(session);\n    session.accept = $7fe4376d5b6c2e01$var$accept.bind(session);\n    $7fe4376d5b6c2e01$var$setupUserAgentCoreEvent(session);\n}\nfunction $7fe4376d5b6c2e01$var$canUseRCMCallControl() {\n    return !!this.rcHeaders;\n}\nfunction $7fe4376d5b6c2e01$var$createSessionMessage(options) {\n    if (!this.rcHeaders) throw Error(\"createSessionMessage options is undefined\");\n    (0, $df5bef30413a053b$export$8b58be045bf06082)(options, {\n        sid: this.rcHeaders.sid,\n        request: this.rcHeaders.request,\n        from: this.rcHeaders.to,\n        to: this.rcHeaders.from\n    });\n    return this.userAgent.createRcMessage(options);\n}\nasync function $7fe4376d5b6c2e01$var$sendReceiveConfirm() {\n    return this.sendSessionMessage((0, $9ecda7333d28e490$export$defe85febe8b728c).receiveConfirm).then((response)=>{\n        this.logger.log(\"sendReceiveConfirm success\");\n        return response;\n    }).catch((error)=>this.logger.error(`failed to send receive confirmation via SIP MESSAGE due to ${error.message}`));\n}\nfunction $7fe4376d5b6c2e01$var$sendSessionMessage(options) {\n    if (!this.rcHeaders) this.logger.error(\"Can't send SIP MESSAGE related to session: no RC headers available\");\n    return this.userAgent.sendMessage(this.rcHeaders.from, this.createSessionMessage(options));\n}\nasync function $7fe4376d5b6c2e01$var$sendInfoAndReceiveResponse(command, _options) {\n    const options = _options || {};\n    (0, $df5bef30413a053b$export$8b58be045bf06082)(command, options);\n    delete command.extraHeaders;\n    return new Promise((resolve, reject)=>{\n        const requestDelegate = {\n            onAccept: (response)=>{\n                let timeout;\n                const { message: { statusCode: statusCode, callId: callId } } = response;\n                if (statusCode === 200) {\n                    const onInfo = (message)=>{\n                        // FIXME: I think we need this check here\n                        if (message.callId !== callId) return;\n                        const body = message?.body || \"{}\";\n                        let obj;\n                        try {\n                            obj = JSON.parse(body);\n                        } catch (e) {\n                            obj = {};\n                        }\n                        if (obj.response && obj.response.command === command.command && obj.response.result) {\n                            timeout && clearTimeout(timeout);\n                            this.off(\"RC_SIP_INFO\", onInfo);\n                            if (obj.response.result.code.toString() === \"0\") return resolve(obj.response.result);\n                            return reject(obj.response.result);\n                        }\n                    };\n                    timeout = setTimeout(()=>{\n                        reject(new Error(\"Timeout: no reply\"));\n                        this.off(\"RC_SIP_INFO\", onInfo);\n                    }, (0, $9ecda7333d28e490$export$2cd411766cb0f9c));\n                    this.on(\"RC_SIP_INFO\", onInfo);\n                } else reject(new Error(`The INFO response status code is: ${statusCode} (waiting for 200)`));\n            },\n            onReject: (response)=>{\n                reject(new Error(`The INFO response status code is: ${response.message.statusCode} (waiting for 200)`));\n            }\n        };\n        const requestOptions = {\n            extraHeaders: [\n                ...options.extraHeaders || [],\n                ...this.userAgent.defaultHeaders\n            ],\n            body: (0, $35e2f96fad41499f$export$46b123b754f2f425)({\n                body: JSON.stringify({\n                    request: command\n                }),\n                contentType: \"application/json;charset=utf-8\"\n            })\n        };\n        this.info({\n            requestDelegate: requestDelegate,\n            requestOptions: requestOptions\n        });\n    });\n}\nasync function $7fe4376d5b6c2e01$var$startRecord() {\n    return $7fe4376d5b6c2e01$var$setRecord(this, true);\n}\nasync function $7fe4376d5b6c2e01$var$stopRecord() {\n    return $7fe4376d5b6c2e01$var$setRecord(this, false);\n}\n// eslint-disable-next-line max-params\nfunction $7fe4376d5b6c2e01$var$sendMoveResponse(reqId, code, description, options = {}) {\n    const extraHeaders = options.extraHeaders || [];\n    const requestOptions = {\n        extraHeaders: [\n            ...extraHeaders,\n            ...this.userAgent.defaultHeaders\n        ],\n        body: (0, $35e2f96fad41499f$export$46b123b754f2f425)({\n            body: JSON.stringify({\n                response: {\n                    reqId: reqId,\n                    command: \"move\",\n                    result: {\n                        code: code,\n                        description: description\n                    }\n                }\n            }),\n            contentType: \"application/json;charset=utf-8\"\n        })\n    };\n    this.info({\n        requestOptions: requestOptions\n    });\n}\nfunction $7fe4376d5b6c2e01$var$ignore() {\n    return this.sendReceiveConfirm().then(()=>this.sendSessionMessage((0, $9ecda7333d28e490$export$defe85febe8b728c).ignore));\n}\nfunction $7fe4376d5b6c2e01$var$toVoicemail() {\n    return this.sendReceiveConfirm().then(()=>this.sendSessionMessage((0, $9ecda7333d28e490$export$defe85febe8b728c).toVoicemail));\n}\nfunction $7fe4376d5b6c2e01$var$replyWithMessage(replyOptions) {\n    let body = 'RepTp=\"' + replyOptions.replyType + '\"';\n    if (replyOptions.replyType === 0) body += ' Bdy=\"' + replyOptions.replyText + '\"';\n    else if (replyOptions.replyType === 1 || replyOptions.replyType === 4) {\n        body += ' Vl=\"' + replyOptions.timeValue + '\"';\n        body += ' Units=\"' + replyOptions.timeUnits + '\"';\n        body += ' Dir=\"' + replyOptions.callbackDirection + '\"';\n    }\n    return this.sendReceiveConfirm().then(()=>this.sendSessionMessage({\n            reqid: (0, $9ecda7333d28e490$export$defe85febe8b728c).replyWithMessage.reqid,\n            body: body\n        }));\n}\nasync function $7fe4376d5b6c2e01$var$flip(target) {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).flip, {\n        target: target\n    });\n}\nasync function $7fe4376d5b6c2e01$var$whisper() {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).whisper);\n}\nasync function $7fe4376d5b6c2e01$var$barge() {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).barge);\n}\nfunction $7fe4376d5b6c2e01$var$park() {\n    return this.sendInfoAndReceiveResponse((0, $9ecda7333d28e490$export$defe85febe8b728c).park);\n}\nfunction $7fe4376d5b6c2e01$var$mute(silent) {\n    if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n        this.logger.warn(\"An active session is required to mute audio\");\n        return;\n    }\n    if (this.muted) {\n        this.logger.debug(\"Session already muted\");\n        return;\n    }\n    this.logger.log(\"Muting Audio\");\n    $7fe4376d5b6c2e01$var$enableSenderTracks(this, false);\n    this.muted = true;\n    if (!silent) this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Muted, this);\n}\nfunction $7fe4376d5b6c2e01$var$unmute(silent) {\n    if (this.state !== (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n        this.logger.warn(\"An active session is required to unmute audio\");\n        return;\n    }\n    if (!this.muted) {\n        this.logger.debug(\"Session not muted\");\n        return;\n    }\n    this.logger.log(\"Unmuting Audio\");\n    $7fe4376d5b6c2e01$var$enableSenderTracks(this, true);\n    this.muted = false;\n    if (!silent) this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Unmuted, this);\n}\nfunction $7fe4376d5b6c2e01$var$addTrack(remoteAudioEle, localAudioEle) {\n    const sessionDescriptionHandler = this.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    let remoteAudio;\n    let localAudio;\n    if (remoteAudioEle && localAudioEle) {\n        remoteAudio = remoteAudioEle;\n        localAudio = localAudioEle;\n    } else if (this.media) {\n        remoteAudio = this.media.remote;\n        localAudio = this.media.local;\n    } else throw new Error(\"HTML Media Element not Defined\");\n    // TODO: peerConnecton.remoteMediaStream already has reciver track added thanks to default session description handler. Can we remove this code?\n    let remoteStream = new MediaStream();\n    if (peerConnection?.getReceivers) peerConnection.getReceivers().forEach((receiver)=>{\n        const rtrack = receiver.track;\n        if (rtrack) {\n            remoteStream.addTrack(rtrack);\n            this.logger.log(\"Remote track added\");\n        }\n    });\n    else {\n        remoteStream = sessionDescriptionHandler.remoteMediaStream;\n        this.logger.log(\"Remote track added\");\n    }\n    remoteAudio.srcObject = remoteStream;\n    remoteAudio.play().catch(()=>{\n        this.logger.error(\"Remote play was rejected\");\n    });\n    // TODO: peerConnecton.localMediaStream already has sender track added thanks to default session description handler. Can we remove this code?\n    let localStream = new MediaStream();\n    if (peerConnection?.getSenders) peerConnection.getSenders().forEach((sender)=>{\n        const strack = sender.track;\n        if (strack && strack.kind === \"audio\") {\n            localStream.addTrack(strack);\n            this.logger.log(\"Local track added\");\n        }\n    });\n    else {\n        localStream = sessionDescriptionHandler.localMediaStream;\n        this.logger.log(\"Local track added\");\n    }\n    localAudio.srcObject = localStream;\n    localAudio.play().catch(()=>{\n        this.logger.error(\"Local play was rejected\");\n    });\n    if (localStream && remoteStream && !this.mediaStatsStarted) {\n        this.mediaStreams = new (0, $557a2ee3af030028$export$2e2bcd8739ae039)(this);\n        this.logger.log(\"Start gathering media report\");\n        this.mediaStatsStarted = true;\n        this.mediaStreams.getMediaStats((report)=>{\n            if (this.userAgent.enableMediaReportLogging) this.logger.log(`Got media report: ${JSON.stringify(report)}`);\n            if (!this.reinviteForNoAudioSent && (0, $0fa0cda49b523db1$export$ce9161a35b9f9ac4)(report)) {\n                this.logger.log(\"No audio report\");\n                this.noAudioReportCount++;\n                if (this.noAudioReportCount === 3) {\n                    this.logger.log(\"No audio for 6 sec. Trying to recover audio by sending Re-invite\");\n                    this.mediaStreams.reconnectMedia();\n                    this.reinviteForNoAudioSent = true;\n                    this.noAudioReportCount = 0;\n                }\n            } else if (!(0, $0fa0cda49b523db1$export$ce9161a35b9f9ac4)(report)) this.noAudioReportCount = 0;\n        }, $7fe4376d5b6c2e01$var$mediaCheckTimer);\n    }\n}\nfunction $7fe4376d5b6c2e01$var$stopMediaStats() {\n    this.logger.log(\"Stopping media stats collection\");\n    if (!this) return;\n    this.mediaStreams?.stopMediaStats();\n    this.mediaStatsStarted = false;\n    this.noAudioReportCount = 0;\n}\nasync function $7fe4376d5b6c2e01$var$blindTransfer(target, options = {}) {\n    this.logger.log(\"Call transfer initiated\");\n    const newTarget = typeof target === \"string\" ? (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${target}@${this.userAgent.sipInfo.domain}`) : target;\n    return this.refer(newTarget, options);\n}\nasync function $7fe4376d5b6c2e01$var$warmTransfer(target, options = {\n    requestOptions: {\n        extraHeaders: []\n    }\n}) {\n    options.requestOptions.extraHeaders = (options.requestOptions.extraHeaders || []).concat(this.userAgent.defaultHeaders);\n    const newTarget = typeof target === \"string\" ? (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${target}@${this.userAgent.sipInfo.domain}`) : target;\n    this.logger.log(\"Completing warm transfer\");\n    return this.refer(newTarget, options);\n}\nasync function $7fe4376d5b6c2e01$var$transfer(target, options = {}) {\n    if (!options.requestOptions) options.requestOptions = {};\n    if (!options.requestOptions.extraHeaders) options.requestOptions.extraHeaders = [];\n    options.requestOptions.extraHeaders = [\n        ...options.requestOptions.extraHeaders,\n        ...this.userAgent.defaultHeaders\n    ];\n    return this.blindTransfer(target, options);\n}\n/**\n *\n * @param this WebPhoneSessionSessionInviteOptions\n * @param options\n * @returns Promise<OutgoingInviteRequest>\n *\n * Sends a reinvite. Also makes sure to regenerate a new SDP by passing offerToReceiveAudio: true, offerToReceiveVideo: false  and iceRestart: true\n * Once the SDP is ready, the local description is set and the SDP is sent to the remote peer along with an INVITE request\n */ function $7fe4376d5b6c2e01$var$reinvite(options = {}) {\n    options.sessionDescriptionHandlerOptions = {\n        ...options.sessionDescriptionHandlerOptions,\n        offerToReceiveAudio: true,\n        offerToReceiveVideo: false,\n        iceRestart: true\n    };\n    options.requestDelegate = options.requestDelegate || {};\n    const originalOnAccept = options.requestDelegate.onAccept?.bind(options.requestDelegate);\n    options.requestDelegate.onAccept = (...args)=>{\n        $7fe4376d5b6c2e01$export$457de3b0bdcdb849(this);\n        originalOnAccept?.(...args);\n    };\n    return this.invite(options);\n}\nasync function $7fe4376d5b6c2e01$var$hold() {\n    this.stopMediaStats();\n    try {\n        this.logger.log(\"Hold Initiated\");\n        await $7fe4376d5b6c2e01$var$setHold(this, true);\n        this.logger.log(\"Hold completed, held is set to true\");\n    } catch (e) {\n        throw new Error(\"Hold could not be completed\");\n    }\n}\nasync function $7fe4376d5b6c2e01$var$unhold() {\n    try {\n        this.logger.log(\"Unhold Initiated\");\n        await $7fe4376d5b6c2e01$var$setHold(this, false);\n        this.logger.log(\"Unhold completed, held is set to false\");\n    } catch (e) {\n        throw new Error(\"Unhold could not be completed\");\n    }\n    this.addTrack(this.media.remote, this.media.local);\n}\n// eslint-disable-next-line max-params\nfunction $7fe4376d5b6c2e01$var$dtmf(dtmf, _duration = 100, _interToneGap = 50) {\n    const duration = parseInt(_duration.toString(), 10);\n    const interToneGap = parseInt(_interToneGap.toString(), 10);\n    const sessionDescriptionHandler = this.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n        this.logger.error(\"Peer connection closed.\");\n        return;\n    }\n    const senders = peerConnection.getSenders();\n    const audioSender = senders.find((sender)=>sender.track && sender.track.kind === \"audio\");\n    const dtmfSender = audioSender.dtmf;\n    if (dtmfSender !== undefined && dtmfSender) {\n        this.logger.log(`Send DTMF: ${dtmf} Duration: ${duration} InterToneGap: ${interToneGap}`);\n        return dtmfSender.insertDTMF(dtmf, duration, interToneGap);\n    }\n    throw new Error(\"Send DTMF failed\");\n}\nasync function $7fe4376d5b6c2e01$var$accept(_options = {}) {\n    const options = _options || {};\n    options.extraHeaders = (options.extraHeaders || []).concat(this.userAgent.defaultHeaders);\n    options.sessionDescriptionHandlerOptions = {\n        ...options.sessionDescriptionHandlerOptions\n    };\n    options.sessionDescriptionHandlerOptions.constraints = options.sessionDescriptionHandlerOptions.constraints || {\n        ...this.userAgent.constraints,\n        optional: [\n            {\n                DtlsSrtpKeyAgreement: \"true\"\n            }\n        ]\n    };\n    try {\n        await this.__accept(options);\n        this.startTime = new Date();\n        this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Accepted, this.request);\n    } catch (e) {\n        if (e.message.indexOf(\"Permission denied\") !== -1) this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UserMediaFailed);\n    }\n}\n// eslint-disable-next-line max-params\nasync function $7fe4376d5b6c2e01$var$forward(target, acceptOptions = {}, transferOptions = {}) {\n    await this.accept(acceptOptions);\n    return new Promise((resolve)=>{\n        this.mute();\n        setTimeout(()=>{\n            resolve(this.transfer(target, transferOptions));\n        }, 700);\n    });\n}\nasync function $7fe4376d5b6c2e01$var$dispose() {\n    $7fe4376d5b6c2e01$var$stopMediaStreamStats(this);\n    this.__dispose();\n}\n/* ---------------------------------------------------------- HELPER FUNCTIONS ---------------------------------------------------------- */ function $7fe4376d5b6c2e01$var$parseRcHeaderString(str = \"\") {\n    const pairs = str.split(/; */).filter((pair)=>pair.includes(\"=\")); // skip things that don't look like key=value\n    const result = {};\n    for (const pair of pairs){\n        let [key, value] = pair.split(\"=\");\n        key = key.trim();\n        value = value.trim();\n        if (!(key in result)) result[key] = value;\n    }\n    return result;\n}\nfunction $7fe4376d5b6c2e01$var$parseRcHeader(session) {\n    const prc = session.request.getHeader(\"P-Rc\");\n    const prcCallInfo = session.request.getHeader(\"P-Rc-Api-Call-Info\");\n    if (prc) {\n        const parser = new DOMParser();\n        const xmlDoc = parser.parseFromString(prc, \"text/xml\");\n        const hdrNode = xmlDoc.getElementsByTagName(\"Hdr\")[0];\n        const bdyNode = xmlDoc.getElementsByTagName(\"Bdy\")[0];\n        if (hdrNode) session.rcHeaders = {\n            sid: hdrNode.getAttribute(\"SID\") || undefined,\n            request: hdrNode.getAttribute(\"Req\") || undefined,\n            from: hdrNode.getAttribute(\"From\") || undefined,\n            to: hdrNode.getAttribute(\"To\") || undefined\n        };\n        if (bdyNode) (0, $df5bef30413a053b$export$8b58be045bf06082)(session.rcHeaders, {\n            srvLvl: bdyNode.getAttribute(\"SrvLvl\"),\n            srvLvlExt: bdyNode.getAttribute(\"SrvLvlExt\"),\n            nm: bdyNode.getAttribute(\"Nm\"),\n            toNm: bdyNode.getAttribute(\"ToNm\")\n        });\n    }\n    if (prcCallInfo) {\n        const parsed = $7fe4376d5b6c2e01$var$parseRcHeaderString(prcCallInfo);\n        (0, $df5bef30413a053b$export$8b58be045bf06082)(session.rcHeaders, parsed);\n    }\n}\nasync function $7fe4376d5b6c2e01$var$setRecord(session, flag) {\n    const message = flag ? (0, $9ecda7333d28e490$export$defe85febe8b728c).startRecord : (0, $9ecda7333d28e490$export$defe85febe8b728c).stopRecord;\n    if (session.__isRecording && !flag || !session.__isRecording && flag) {\n        const data = await session.sendInfoAndReceiveResponse(message);\n        session.__isRecording = !!flag;\n        return data;\n    }\n}\nfunction $7fe4376d5b6c2e01$var$enableReceiverTracks(session, enable) {\n    const sessionDescriptionHandler = session.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n        session.logger.error(\"Peer connection closed.\");\n        return;\n    }\n    peerConnection.getReceivers().forEach((receiver)=>{\n        if (receiver.track) receiver.track.enabled = enable;\n    });\n}\nfunction $7fe4376d5b6c2e01$var$enableSenderTracks(session, enable) {\n    const sessionDescriptionHandler = session.sessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n        session.logger.error(\"Peer connection closed.\");\n        return;\n    }\n    peerConnection.getSenders().forEach((sender)=>{\n        if (sender.track) sender.track.enabled = enable;\n    });\n}\nfunction $7fe4376d5b6c2e01$var$setHold(session, hold) {\n    return new Promise((resolve, reject)=>{\n        // Just resolve if we are already in correct state\n        if (session.held === hold) {\n            resolve();\n            return;\n        }\n        const options = {\n            requestDelegate: {\n                onAccept: async (response)=>{\n                    session.held = hold;\n                    const sessionDescriptionHandler = session.sessionDescriptionHandler;\n                    const peerConnection = sessionDescriptionHandler.peerConnection;\n                    const localSdp = peerConnection.localDescription.sdp;\n                    const match = localSdp.match(/a=(sendrecv|sendonly|recvonly|inactive)/);\n                    const direction = match ? match[1] : \"\";\n                    session.__localHold = response.message.statusCode === 200 && direction === \"sendonly\";\n                    session.logger.log(\"localhold is set to \" + session.__localHold);\n                    $7fe4376d5b6c2e01$var$enableReceiverTracks(session, !session.held);\n                    $7fe4376d5b6c2e01$var$enableSenderTracks(session, !session.held && !session.muted);\n                    resolve();\n                },\n                onReject: ()=>{\n                    session.logger.warn(\"re-invite request was rejected\");\n                    $7fe4376d5b6c2e01$var$enableReceiverTracks(session, !session.held);\n                    $7fe4376d5b6c2e01$var$enableSenderTracks(session, !session.held && !session.muted);\n                    reject(new Error(\"re-invite request was rejected\"));\n                }\n            }\n        };\n        // Session properties used to pass options to the SessionDescriptionHandler:\n        //\n        // 1) Session.sessionDescriptionHandlerOptions\n        //    SDH options for the initial INVITE transaction.\n        //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n        //\n        // 2) Session.sessionDescriptionHandlerOptionsReInvite\n        //    SDH options for re-INVITE transactions.\n        //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Session.invite().\n        const sessionDescriptionHandlerOptions = session.sessionDescriptionHandlerOptionsReInvite;\n        sessionDescriptionHandlerOptions.hold = hold;\n        session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n        // Send re-INVITE\n        session.invite(options).then(()=>{\n            // preemptively enable/disable tracks\n            $7fe4376d5b6c2e01$var$enableReceiverTracks(session, !hold);\n            $7fe4376d5b6c2e01$var$enableSenderTracks(session, !hold && !session.muted);\n        }).catch((error)=>{\n            if (error instanceof (0, $92ef9568286e94e7$export$83a8f2b4495394c4)) session.logger.error(\"A hold request is already in progress.\");\n            reject(error);\n        });\n    });\n}\nfunction $7fe4376d5b6c2e01$var$stopPlaying(session) {\n    session.userAgent.audioHelper.playOutgoing(false);\n    session.userAgent.audioHelper.playIncoming(false);\n}\nfunction $7fe4376d5b6c2e01$export$ecabafa640e73904(session) {\n    if (!session.userAgent.enableQos) return;\n    session.logger.log(\"SessionDescriptionHandler created\");\n    (0, $9e1ab2fd2078bd8c$export$f03888bc45437819)(session);\n    navigator.mediaDevices.enumerateDevices().then((devices)=>{\n        devices.forEach((device)=>session.logger.log(`${device.kind} = ${device.label} ${JSON.stringify(device)}`));\n    });\n}\nfunction $7fe4376d5b6c2e01$var$setupUserAgentCoreEvent(session) {\n    if (session.__userAgentCoreEventsSetup) return;\n    const userAgentCore = session.userAgent.userAgentCore;\n    userAgentCore.on((0, $e469250112f23c01$export$ada873a34909da65).Session.UpdateReceived, (payload)=>session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UpdateReceived, payload));\n    userAgentCore.on((0, $e469250112f23c01$export$ada873a34909da65).Session.MoveToRcv, (payload)=>session.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.MoveToRcv, payload));\n    // RC_SIP_INFO event is for internal use\n    userAgentCore.on(\"RC_SIP_INFO\", (payload)=>session.emit(\"RC_SIP_INFO\", payload));\n    session.__userAgentCoreEventsSetup = true;\n}\nfunction $7fe4376d5b6c2e01$var$stopMediaStreamStats(session) {\n    if (session.mediaStreams) {\n        session.logger.log(\"Releasing media streams\");\n        session.mediaStreams.release();\n    }\n}\nfunction $7fe4376d5b6c2e01$var$onLocalHold() {\n    return this.__localHold;\n}\nfunction $7fe4376d5b6c2e01$var$setQosStats(stats) {\n    this.__qosStats.cpuOS = stats.cpuOS || \"0:0:0\";\n    this.__qosStats.cpuRC = stats.cpuRC || \"0:0:0\";\n    this.__qosStats.ram = stats.ram || \"0:0:0\";\n    this.__qosStats.netType = stats.netType || undefined;\n}\n\n\n\nvar $7etJZ = parcelRequire(\"7etJZ\");\n\n\nfunction $abf4b9ea6aa7f3e9$export$fda6e30b178a00bc(userAgent) {\n    const userAgentCore = userAgent.userAgentCore;\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    userAgentCore.on = eventEmitter.on.bind(eventEmitter);\n    userAgentCore.off = eventEmitter.off.bind(eventEmitter);\n    userAgentCore.addListener = eventEmitter.addListener.bind(eventEmitter);\n    userAgentCore.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    userAgentCore.emit = eventEmitter.emit.bind(eventEmitter);\n    userAgentCore._receiveIncomingRequestFromTransport = userAgentCore.receiveIncomingRequestFromTransport.bind(userAgent.userAgentCore);\n    userAgentCore.receiveIncomingRequestFromTransport = $abf4b9ea6aa7f3e9$var$receiveIncomingRequestFromTransport.bind(userAgent.userAgentCore);\n}\nfunction $abf4b9ea6aa7f3e9$var$receiveIncomingRequestFromTransport(message) {\n    switch(message.method){\n        case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).UPDATE:\n            this.logger.log(\"Receive UPDATE request. Do nothing just return 200 OK\");\n            this.replyStateless(message, {\n                statusCode: 200\n            });\n            this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UpdateReceived, message);\n            return;\n        case (0, $ea4e4d873ec3240b$export$e7094788287c5e9b).INFO:\n            {\n                // For the Move2RCV request from server\n                const content = $abf4b9ea6aa7f3e9$var$getIncomingInfoContent(message);\n                if (content?.request?.reqId && content?.request?.command === \"move\" && content?.request?.target === \"rcv\") {\n                    this.replyStateless(message, {\n                        statusCode: 200\n                    });\n                    this.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.MoveToRcv, content.request);\n                    return;\n                }\n                // For other SIP INFO from server\n                this.emit(\"RC_SIP_INFO\", message);\n                // SIP.js does not support application/json content type, so we monkey override its behavior in this case\n                const contentType = message.getHeader(\"content-type\");\n                if (contentType.match(/^application\\/json/i)) {\n                    this.replyStateless(message, {\n                        statusCode: 200\n                    });\n                    return;\n                }\n                break;\n            }\n    }\n    return this._receiveIncomingRequestFromTransport(message);\n}\nfunction $abf4b9ea6aa7f3e9$var$getIncomingInfoContent(message) {\n    if (!message?.body) return {};\n    let ret = {};\n    try {\n        ret = JSON.parse(message.body);\n    } catch (e) {\n        return {};\n    }\n    return ret;\n}\n\n\nfunction $049fac7af831ffeb$export$fa697dee51767d8e(configuration, sipInfo, options, id) {\n    const extraConfiguration = {\n        delegate: {\n            onConnect: ()=>userAgent.register(),\n            onInvite: (invitation)=>{\n                userAgent.audioHelper.playIncoming(true);\n                invitation.delegate = {};\n                invitation.delegate.onSessionDescriptionHandler = ()=>(0, $7fe4376d5b6c2e01$export$ecabafa640e73904)(invitation);\n                (0, $7fe4376d5b6c2e01$export$859ed353f486f09)(invitation);\n                (0, $7fe4376d5b6c2e01$export$457de3b0bdcdb849)(invitation);\n                invitation.logger.log(\"UA received incoming call invite\");\n                invitation.sendReceiveConfirm();\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Invite, invitation);\n            },\n            onNotify: (notification)=>{\n                const event = notification.request.getHeader(\"Event\");\n                if (event === \"\") userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.ProvisionUpdate);\n                userAgent.logger.log(\"UA received notify\");\n                notification.accept();\n            }\n        }\n    };\n    const extendedConfiguration = {\n        ...extraConfiguration,\n        ...configuration\n    };\n    const userAgent = new (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf)(extendedConfiguration);\n    const eventEmitter = new (0, $7etJZ.EventEmitter)();\n    userAgent.on = eventEmitter.on.bind(eventEmitter);\n    userAgent.off = eventEmitter.off.bind(eventEmitter);\n    userAgent.once = eventEmitter.once.bind(eventEmitter);\n    userAgent.addListener = eventEmitter.addListener.bind(eventEmitter);\n    userAgent.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n    userAgent.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n    userAgent.defaultHeaders = [\n        `P-rc-endpoint-id: ${id}`,\n        `Client-id: ${options.clientId}`\n    ];\n    userAgent.regId = options.regId;\n    userAgent.media = {};\n    userAgent.enableQos = options.enableQos;\n    userAgent.enableMediaReportLogging = options.enableMediaReportLogging;\n    userAgent.qosCollectInterval = options.qosCollectInterval;\n    if (options.media?.remote && options.media.local) {\n        userAgent.media.remote = options.media.remote;\n        userAgent.media.local = options.media.local;\n    } else userAgent.media = undefined;\n    userAgent.registerer = new (0, $1c17056ca0658eec$export$ed326b71f90510a1)(userAgent, {\n        regId: userAgent.regId,\n        instanceId: userAgent.instanceId,\n        extraHeaders: userAgent.defaultHeaders\n    });\n    userAgent.sipInfo = sipInfo;\n    userAgent.modifiers = options.modifiers;\n    userAgent.constraints = options.mediaConstraints;\n    userAgent.earlyMedia = options.earlyMedia;\n    userAgent.audioHelper = new (0, $d7cdbcd3a3602964$export$d828144089ea9387)(options.audioHelper);\n    userAgent.onSession = options.onSession;\n    userAgent._transport = (0, $69d2e7242b6c53d5$export$483c730d9fd36349)(userAgent.transport, options);\n    userAgent.onTransportDisconnect = $049fac7af831ffeb$var$onTransportDisconnect.bind(userAgent);\n    userAgent.emit = eventEmitter.emit.bind(eventEmitter);\n    userAgent.register = $049fac7af831ffeb$var$register.bind(userAgent);\n    userAgent.unregister = $049fac7af831ffeb$var$unregister.bind(userAgent);\n    userAgent.invite = $049fac7af831ffeb$var$invite.bind(userAgent);\n    userAgent.sendMessage = $049fac7af831ffeb$var$sendMessage.bind(userAgent);\n    userAgent.createRcMessage = $049fac7af831ffeb$var$createRcMessage.bind(userAgent);\n    userAgent.switchFrom = $049fac7af831ffeb$var$switchFrom.bind(userAgent);\n    (0, $abf4b9ea6aa7f3e9$export$fda6e30b178a00bc)(userAgent);\n    userAgent.start();\n    userAgent.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Started:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Started);\n                break;\n            case (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Stopped);\n                break;\n        }\n    });\n    userAgent.registerer.stateChange.addListener((newState)=>{\n        switch(newState){\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Registered:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Registered);\n                break;\n            case (0, $d50b58dd3f4a0f9c$export$7789a6c56b4e5efd).Unregistered:\n                userAgent.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.Unregistered);\n                break;\n        }\n    });\n    return userAgent;\n}\nfunction $049fac7af831ffeb$var$onTransportDisconnect(error) {\n    // Patch it so that reconnection is managed by WebPhoneTransport\n    if (this.state === (0, $baefc8527022eb6d$export$c1084e0d257c3742).Stopped) return;\n    if (this.delegate?.onDisconnect) this.delegate.onDisconnect(error);\n    if (error) this.transport.reconnect();\n}\nfunction $049fac7af831ffeb$var$createRcMessage(options) {\n    options.body = options.body || \"\";\n    return '<Msg><Hdr SID=\"' + options.sid + '\" Req=\"' + options.request + '\" From=\"' + options.from + '\" To=\"' + options.to + '\" Cmd=\"' + options.reqid + '\"/> ' + '<Bdy Cln=\"' + this.sipInfo.authorizationId + '\" ' + options.body + \"/>\" + \"</Msg>\";\n}\nfunction $049fac7af831ffeb$var$sendMessage(_to, messageData) {\n    const extraHeaders = [\n        `P-rc-ws: ${this.contact}`\n    ];\n    // For some reason, UserAgent.makeURI is unable to parse username starting with #\n    // Fix in later release if this is fixed by SIP.js\n    let to = _to;\n    const [user] = to.split(\"@\");\n    to = to.startsWith(\"#\") ? `sip:${to.substring(1)}` : `sip:${to}`;\n    const uri = (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(to);\n    uri.user = user;\n    const messager = new (0, $1a5a7fa3a929ac56$export$9631269509c3d1fb)(this, uri, messageData, \"x-rc/agent\", {\n        extraHeaders: extraHeaders\n    });\n    return new Promise((resolve, reject)=>{\n        messager.message({\n            requestDelegate: {\n                onAccept: resolve,\n                onReject: reject\n            }\n        });\n    });\n}\nasync function $049fac7af831ffeb$var$register() {\n    await this.registerer.register({\n        requestDelegate: {\n            onReject: (response)=>{\n                if (!response) return;\n                if (this.transport.isSipErrorCode(response.message.statusCode)) this.transport.onSipErrorCode();\n                this.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.RegistrationFailed, response);\n                this.logger.warn(\"UA Registration Failed\");\n            }\n        }\n    });\n}\nasync function $049fac7af831ffeb$var$unregister() {\n    await this.registerer.unregister();\n}\nfunction $049fac7af831ffeb$var$invite(number, options = {}) {\n    const inviterOptions = {};\n    inviterOptions.extraHeaders = [\n        ...options.extraHeaders || [],\n        ...this.defaultHeaders,\n        `P-Asserted-Identity: sip:${(options.fromNumber || this.sipInfo.username) + \"@\" + this.sipInfo.domain}`,\n        ...options.homeCountryId ? [\n            `P-rc-country-id: ${options.homeCountryId}`\n        ] : []\n    ];\n    options.RTCConstraints = options.RTCConstraints || {\n        ...this.constraints,\n        optional: [\n            {\n                DtlsSrtpKeyAgreement: \"true\"\n            }\n        ]\n    };\n    inviterOptions.sessionDescriptionHandlerModifiers = this.modifiers;\n    inviterOptions.sessionDescriptionHandlerOptions = {\n        constraints: options.RTCConstraints\n    };\n    inviterOptions.earlyMedia = this.earlyMedia;\n    inviterOptions.delegate = {\n        onSessionDescriptionHandler: ()=>(0, $7fe4376d5b6c2e01$export$ecabafa640e73904)(inviter),\n        onNotify: (notification)=>notification.accept()\n    };\n    this.audioHelper.playOutgoing(true);\n    this.logger.log(`Invite to ${number} created with playOutgoing set to true`);\n    const inviter = new (0, $989df868235ee8e3$export$2215cc52469fcfa0)(this, (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${number}@${this.sipInfo.domain}`), inviterOptions);\n    inviter.invite({\n        requestDelegate: {\n            onAccept: (inviteResponse)=>{\n                inviter.startTime = new Date();\n                inviter.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Accepted, inviteResponse.message);\n            },\n            onProgress: (inviteResponse)=>{\n                inviter.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.Progress, inviteResponse.message);\n            }\n        }\n    }).then(()=>this.emit((0, $e469250112f23c01$export$ada873a34909da65).UserAgent.InviteSent, inviter)).catch((e)=>{\n        if (e.message.indexOf(\"Permission denied\") > -1) inviter.emit((0, $e469250112f23c01$export$ada873a34909da65).Session.UserMediaFailed);\n        throw e;\n    });\n    (0, $7fe4376d5b6c2e01$export$859ed353f486f09)(inviter);\n    return inviter;\n}\n/**\n * Support to switch call from other device to current web phone device\n * need active call information from details presence API for switching\n * https://developers.ringcentral.com/api-reference/Detailed-Extension-Presence-with-SIP-Event\n */ function $049fac7af831ffeb$var$switchFrom(activeCall, options = {}) {\n    const replaceHeaders = [\n        `Replaces: ${activeCall.id};to-tag=${activeCall.sipData.fromTag};from-tag=${activeCall.sipData.toTag}`,\n        \"RC-call-type: replace\"\n    ];\n    const [toNumber, fromNumber] = activeCall.direction === \"Outbound\" ? [\n        activeCall.to,\n        activeCall.from\n    ] : [\n        activeCall.from,\n        activeCall.to\n    ];\n    options.extraHeaders = (options.extraHeaders || []).concat(replaceHeaders);\n    options.fromNumber = options.fromNumber || fromNumber;\n    const inviterOptions = {\n        extraHeaders: options.extraHeaders,\n        sessionDescriptionHandlerOptions: {\n            constraints: options.RTCConstraints || this.constraints\n        }\n    };\n    return this.invite(toNumber, inviterOptions);\n}\n\n\n\n\n\nclass $a0713fbd55f057e2$export$4d703fa87dd9817a {\n    // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n    static dispatchAddTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"addtrack\", {\n            track: track\n        }));\n    }\n    // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n    static dispatchRemoveTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"removetrack\", {\n            track: track\n        }));\n    }\n    /** Logger. */ logger;\n    /** Media stream factory. */ mediaStreamFactory;\n    /** Configuration options. */ sessionDescriptionHandlerConfiguration;\n    /** The local media stream. */ _localMediaStream;\n    /** The remote media stream. */ _remoteMediaStream;\n    /** The data channel. Undefined before created. */ _dataChannel;\n    /** The peer connection. Undefined after SessionDescriptionHandler.close(). */ _peerConnection;\n    /** The peer connection delegate. */ _peerConnectionDelegate;\n    iceGatheringCompletePromise;\n    iceGatheringCompleteTimeoutId;\n    iceGatheringCompleteResolve;\n    iceGatheringCompleteReject;\n    localMediaStreamConstraints;\n    onDataChannel;\n    /**\n   * Constructor\n   * @param logger - A logger\n   * @param mediaStreamFactory - A factory to provide a MediaStream\n   * @param options - Options passed from the SessionDescriptionHandleFactory\n   */ constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration){\n        logger.debug(\"SessionDescriptionHandler.constructor\");\n        this.logger = logger;\n        this.mediaStreamFactory = mediaStreamFactory;\n        this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n        this._localMediaStream = new MediaStream();\n        this._remoteMediaStream = new MediaStream();\n        this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration?.peerConnectionConfiguration);\n        this.initPeerConnectionEventHandlers();\n    }\n    /**\n   * The local media stream currently being sent.\n   *\n   * @remarks\n   * The local media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * local media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */ get localMediaStream() {\n        return this._localMediaStream;\n    }\n    /**\n   * The remote media stream currently being received.\n   *\n   * @remarks\n   * The remote media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * remote media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */ get remoteMediaStream() {\n        return this._remoteMediaStream;\n    }\n    /**\n   * The data channel. Undefined before it is created.\n   */ get dataChannel() {\n        return this._dataChannel;\n    }\n    /**\n   * The peer connection. Undefined if peer connection has closed.\n   *\n   * @remarks\n   * While access to the underlying `RTCPeerConnection` is provided, note that\n   * using methods with modify it may break the operation of this class.\n   * In particular, this class depends on exclusive access to the\n   * event handler properties. If you need access to the peer connection\n   * events, either register for events using `addEventListener()` on\n   * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n   * this `SessionDescriptionHandler`.\n   */ get peerConnection() {\n        return this._peerConnection;\n    }\n    /**\n   * A delegate which provides access to the peer connection event handlers.\n   *\n   * @remarks\n   * Setting the peer connection event handlers directly is not supported\n   * and may break this class. As this class depends on exclusive access\n   * to them, a delegate may be set which provides alternative access to\n   * the event handlers in a fashion which is supported.\n   */ get peerConnectionDelegate() {\n        return this._peerConnectionDelegate;\n    }\n    set peerConnectionDelegate(delegate) {\n        this._peerConnectionDelegate = delegate;\n    }\n    /**\n   * Stop tracks and close peer connection.\n   */ close() {\n        this.logger.debug(\"SessionDescriptionHandler.close\");\n        if (this._peerConnection === undefined) return;\n        this._peerConnection.getReceivers().forEach((receiver)=>{\n            receiver.track?.stop();\n        });\n        this._peerConnection.getSenders().forEach((sender)=>{\n            sender.track?.stop();\n        });\n        if (this._dataChannel) this._dataChannel.close();\n        this._peerConnection.close();\n        this._peerConnection = undefined;\n    }\n    /**\n   * Creates an offer or answer.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */ getDescription(options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.getDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options?.onDataChannel;\n        // ICE will restart upon applying an offer created with the iceRestart option\n        const iceRestart = options?.offerOptions?.iceRestart;\n        // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n        const iceTimeout = options?.iceGatheringTimeout === undefined ? this.sessionDescriptionHandlerConfiguration?.iceGatheringTimeout : options?.iceGatheringTimeout;\n        return this.getLocalMediaStream(options).then(()=>this.enableSenderDscp()).then(()=>this.updateDirection(options)).then(()=>this.createDataChannel(options)).then(()=>this.createLocalOfferOrAnswer(options)).then((sessionDescription)=>this.applyModifiers(sessionDescription, modifiers)).then((sessionDescription)=>this.setLocalSessionDescription(sessionDescription)).then(()=>this.waitForIceGatheringComplete(iceRestart, iceTimeout)).then(()=>this.getLocalSessionDescription()).then((sessionDescription)=>{\n            return {\n                body: sessionDescription.sdp,\n                contentType: \"application/sdp\"\n            };\n        }).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.getDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n   * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n   * @param contentType - The content type that is in the SIP Message.\n   */ hasDescription(contentType) {\n        this.logger.debug(\"SessionDescriptionHandler.hasDescription\");\n        return contentType === \"application/sdp\";\n    }\n    /**\n   * Send DTMF via RTP (RFC 4733).\n   * Returns true if DTMF send is successful, false otherwise.\n   * @param tones - A string containing DTMF digits.\n   * @param options - Options object to be used by sendDtmf.\n   */ sendDtmf(tones, options) {\n        this.logger.debug(\"SessionDescriptionHandler.sendDtmf\");\n        if (this._peerConnection === undefined) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - peer connection closed\");\n            return false;\n        }\n        const senders = this._peerConnection.getSenders();\n        if (senders.length === 0) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no senders\");\n            return false;\n        }\n        const dtmfSender = senders[0].dtmf;\n        if (!dtmfSender) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no DTMF sender\");\n            return false;\n        }\n        const duration = options?.duration;\n        const interToneGap = options?.interToneGap;\n        try {\n            dtmfSender.insertDTMF(tones, duration, interToneGap);\n        } catch (e) {\n            this.logger.error(e);\n            return false;\n        }\n        this.logger.log(\"SessionDescriptionHandler.sendDtmf sent via RTP: \" + tones.toString());\n        return true;\n    }\n    /**\n   * Sets an offer or answer.\n   * @param sdp - The session description.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */ setDescription(sdp, options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.setDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // Callback on data channel creation\n        this.onDataChannel = options?.onDataChannel;\n        // SDP type\n        const type = this._peerConnection.signalingState === \"have-local-offer\" ? \"answer\" : \"offer\";\n        return this.getLocalMediaStream(options).then(()=>this.applyModifiers({\n                sdp: sdp,\n                type: type\n            }, modifiers)).then((sessionDescription)=>this.setRemoteSessionDescription(sessionDescription)).catch((error)=>{\n            this.logger.error(\"SessionDescriptionHandler.setDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n   * Applies modifiers to SDP prior to setting the local or remote description.\n   * @param sdp - SDP to modify.\n   * @param modifiers - Modifiers to apply.\n   */ applyModifiers(sdp, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.applyModifiers\");\n        if (!modifiers || modifiers.length === 0) return Promise.resolve(sdp);\n        return modifiers.reduce((cur, next)=>cur.then(next), Promise.resolve(sdp)).then((modified)=>{\n            this.logger.debug(\"SessionDescriptionHandler.applyModifiers - modified sdp\");\n            if (!modified.sdp || !modified.type) throw new Error(\"Invalid SDP.\");\n            return {\n                sdp: modified.sdp,\n                type: modified.type\n            };\n        });\n    }\n    /**\n   * Create a data channel.\n   * @remarks\n   * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n   * Only creates a data channel if creating a local offer.\n   * Only if one does not already exist.\n   * @param options - Session description handler options.\n   */ createDataChannel(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // only create a data channel if requested\n        if (options?.dataChannel !== true) return Promise.resolve();\n        // do not create a data channel if we already have one\n        if (this._dataChannel) return Promise.resolve();\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer so create a data channel\n                this.logger.debug(\"SessionDescriptionHandler.createDataChannel - creating data channel\");\n                try {\n                    this._dataChannel = this._peerConnection.createDataChannel(options?.dataChannelLabel || \"\", options?.dataChannelOptions);\n                    if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n                    return Promise.resolve();\n                } catch (error) {\n                    return Promise.reject(error);\n                }\n            case \"have-remote-offer\":\n                return Promise.resolve();\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n   * Depending on current signaling state, create a local offer or answer.\n   * @param options - Session description handler options.\n   */ createLocalOfferOrAnswer(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer\");\n                return this._peerConnection.createOffer(options?.offerOptions);\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer\");\n                return this._peerConnection.createAnswer(options?.answerOptions);\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n   * Get a media stream from the media stream factory and set the local media stream.\n   * @param options - Session description handler options.\n   */ getLocalMediaStream(options) {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalMediaStream\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        let constraints = {\n            ...options?.constraints\n        };\n        // if we already have a local media stream...\n        if (this.localMediaStreamConstraints) {\n            // ignore constraint \"downgrades\"\n            constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n            constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n            // if constraints have not changed, do not get a new media stream\n            if (JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) && JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)) return Promise.resolve();\n        } else // if no constraints have been specified, default to audio for initial media stream\n        if (constraints.audio === undefined && constraints.video === undefined) constraints = {\n            audio: true\n        };\n        this.localMediaStreamConstraints = constraints;\n        return this.mediaStreamFactory(constraints, this).then((mediaStream)=>this.setLocalMediaStream(mediaStream));\n    }\n    /**\n   * Sets the encoding priorty to high for sender track.\n   *\n   */ async enableSenderDscp() {\n        if (!this.sessionDescriptionHandlerConfiguration?.enableDscp) return;\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        for (const sender of this._peerConnection.getSenders().filter((sender)=>sender.track)){\n            const parameters = sender.getParameters();\n            // console.info('getsender params =', parameters);\n            parameters.priority = \"high\";\n            try {\n                await sender.setParameters(parameters);\n            } catch (error) {\n                console.error(`Error while setting encodings parameters for ${sender.track.kind} Track ${sender.track.id}: ${error.message || error.name}`);\n            }\n        }\n    }\n    /**\n   * Sets the peer connection's sender tracks and local media stream tracks.\n   *\n   * @remarks\n   * Only the first audio and video tracks of the provided MediaStream are utilized.\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param stream - Media stream containing tracks to be utilized.\n   */ setLocalMediaStream(stream) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalMediaStream\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const pc = this._peerConnection;\n        const localStream = this._localMediaStream;\n        const trackUpdates = [];\n        const updateTrack = (newTrack)=>{\n            const kind = newTrack.kind;\n            if (kind !== \"audio\" && kind !== \"video\") throw new Error(`Unknown new track kind ${kind}.`);\n            const sender = pc.getSenders().find((sender)=>sender.track && sender.track.kind === kind);\n            if (sender) trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n                resolve();\n            }).then(()=>sender.replaceTrack(newTrack).then(()=>{\n                    const oldTrack = localStream.getTracks().find((localTrack)=>localTrack.kind === kind);\n                    if (oldTrack) {\n                        oldTrack.stop();\n                        localStream.removeTrack(oldTrack);\n                        $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(localStream, oldTrack);\n                    }\n                    localStream.addTrack(newTrack);\n                    $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n                }).catch((error)=>{\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`);\n                    throw error;\n                })));\n            else trackUpdates.push(new Promise((resolve)=>{\n                this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n                resolve();\n            }).then(()=>{\n                // Review: could make streamless tracks a configurable option?\n                // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n                try {\n                    pc.addTrack(newTrack, localStream);\n                } catch (error) {\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n                    throw error;\n                }\n                localStream.addTrack(newTrack);\n                $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(localStream, newTrack);\n            }));\n        };\n        // update peer connection audio tracks\n        const audioTracks = stream.getAudioTracks();\n        if (audioTracks.length) updateTrack(audioTracks[0]);\n        // update peer connection video tracks\n        const videoTracks = stream.getVideoTracks();\n        if (videoTracks.length) updateTrack(videoTracks[0]);\n        return trackUpdates.reduce((p, x)=>p.then(()=>x), Promise.resolve());\n    }\n    /**\n   * Gets the peer connection's local session description.\n   */ getLocalSessionDescription() {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = this._peerConnection.localDescription;\n        if (!sdp) return Promise.reject(new Error(\"Failed to get local session description\"));\n        return Promise.resolve(sdp);\n    }\n    /**\n   * Sets the peer connection's local session description.\n   * @param sessionDescription - sessionDescription The session description.\n   */ setLocalSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        return this._peerConnection.setLocalDescription(sessionDescription);\n    }\n    /**\n   * Sets the peer connection's remote session description.\n   * @param sessionDescription - The session description.\n   */ setRemoteSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteSessionDescription\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        const sdp = sessionDescription.sdp;\n        let type;\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable assume this is a remote offer\n                type = \"offer\";\n                break;\n            case \"have-local-offer\":\n                // if we made an offer, assume this is a remote answer\n                type = \"answer\";\n                break;\n            case \"have-local-pranswer\":\n            case \"have-remote-offer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        if (!sdp) {\n            this.logger.error(\"SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp\");\n            return Promise.reject(new Error(\"SDP is undefined\"));\n        }\n        return this._peerConnection.setRemoteDescription({\n            sdp: sdp,\n            type: type\n        });\n    }\n    /**\n   * Sets a remote media stream track.\n   *\n   * @remarks\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param track - Media stream track to be utilized.\n   */ setRemoteTrack(track) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteTrack\");\n        const remoteStream = this._remoteMediaStream;\n        if (remoteStream.getTrackById(track.id)) this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n        else if (track.kind === \"audio\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getAudioTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        } else if (track.kind === \"video\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getVideoTracks().forEach((track)=>{\n                track.stop();\n                remoteStream.removeTrack(track);\n                $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            $a0713fbd55f057e2$export$4d703fa87dd9817a.dispatchAddTrackEvent(remoteStream, track);\n        }\n    }\n    /**\n   * Depending on the current signaling state and the session hold state, update transceiver direction.\n   * @param options - Session description handler options.\n   */ updateDirection(options) {\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // 4.2.3.  setDirection\n        //\n        //    The setDirection method sets the direction of a transceiver, which\n        //    affects the direction property of the associated \"m=\" section on\n        //    future calls to createOffer and createAnswer.  The permitted values\n        //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n        //    mirroring the identically named direction attributes defined in\n        //    [RFC4566], Section 6.\n        //\n        //    When creating offers, the transceiver direction is directly reflected\n        //    in the output, even for re-offers.  When creating answers, the\n        //    transceiver direction is intersected with the offered direction, as\n        //    explained in Section 5.3 below.\n        //\n        //    Note that while setDirection sets the direction property of the\n        //    transceiver immediately (Section 4.2.4), this property does not\n        //    immediately affect whether the transceiver's RtpSender will send or\n        //    its RtpReceiver will receive.  The direction in effect is represented\n        //    by the currentDirection property, which is only updated when an\n        //    answer is applied.\n        //\n        // 4.2.4.  direction\n        //\n        //    The direction property indicates the last value passed into\n        //    setDirection.  If setDirection has never been called, it is set to\n        //    the direction the transceiver was initialized with.\n        //\n        // 4.2.5.  currentDirection\n        //\n        //    The currentDirection property indicates the last negotiated direction\n        //    for the transceiver's associated \"m=\" section.  More specifically, it\n        //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n        //    section in the last applied answer (including provisional answers),\n        //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n        //    For example, if the direction attribute for the associated \"m=\"\n        //    section in a remote answer is \"recvonly\", currentDirection is set to\n        //    \"sendonly\".\n        //\n        //    If an answer that references this transceiver has not yet been\n        //    applied or if the transceiver is stopped, currentDirection is set to\n        //    \"null\".\n        //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n        //\n        // *  A direction attribute, determined by applying the rules regarding\n        //    the offered direction specified in [RFC3264], Section 6.1, and\n        //    then intersecting with the direction of the associated\n        //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n        //    offered as \"sendonly\" and the local transceiver is set to\n        //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n        // https://tools.ietf.org/html/rfc8829#section-5.3.1\n        //\n        // If a stream is offered as sendonly, the corresponding stream MUST be\n        // marked as recvonly or inactive in the answer.  If a media stream is\n        // listed as recvonly in the offer, the answer MUST be marked as\n        // sendonly or inactive in the answer.  If an offered media stream is\n        // listed as sendrecv (or if there is no direction attribute at the\n        // media or session level, in which case the stream is sendrecv by\n        // default), the corresponding stream in the answer MAY be marked as\n        // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n        // stream is listed as inactive, it MUST be marked as inactive in the\n        // answer.\n        // https://tools.ietf.org/html/rfc3264#section-6.1\n        switch(this._peerConnection.signalingState){\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting offer direction\");\n                {\n                    // determine the direction to offer given the current direction and hold state\n                    const directionToOffer = (currentDirection)=>{\n                        switch(currentDirection){\n                            case \"inactive\":\n                                return options?.hold ? \"inactive\" : \"recvonly\";\n                            case \"recvonly\":\n                                return options?.hold ? \"inactive\" : \"recvonly\";\n                            case \"sendonly\":\n                                return options?.hold ? \"sendonly\" : \"sendrecv\";\n                            case \"sendrecv\":\n                                return options?.hold ? \"sendonly\" : \"sendrecv\";\n                            case \"stopped\":\n                                return \"stopped\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    };\n                    // set the transceiver direction to the offer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            const offerDirection = directionToOffer(transceiver.direction);\n                            if (transceiver.direction !== offerDirection) transceiver.direction = offerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting answer direction\");\n                // FIXME: This is not the correct way to determine the answer direction as it is only\n                // considering first match in the offered SDP and using that to determine the answer direction.\n                // While that may be fine for our current use cases, it is not a generally correct approach.\n                {\n                    // determine the offered direction\n                    const offeredDirection = (()=>{\n                        const description = this._peerConnection.remoteDescription;\n                        if (!description) throw new Error(\"Failed to read remote offer\");\n                        const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n                        if (searchResult) switch(searchResult[0]){\n                            case \"a=inactive\\r\\n\":\n                                return \"inactive\";\n                            case \"a=recvonly\\r\\n\":\n                                return \"recvonly\";\n                            case \"a=sendonly\\r\\n\":\n                                return \"sendonly\";\n                            case \"a=sendrecv\\r\\n\":\n                                return \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                        return \"sendrecv\";\n                    })();\n                    // determine the answer direction based on the offered direction and our hold state\n                    const answerDirection = (()=>{\n                        switch(offeredDirection){\n                            case \"inactive\":\n                                return \"inactive\";\n                            case \"recvonly\":\n                                return \"sendonly\";\n                            case \"sendonly\":\n                                return options?.hold ? \"inactive\" : \"recvonly\";\n                            case \"sendrecv\":\n                                return options?.hold ? \"sendonly\" : \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    })();\n                    // set the transceiver direction to the answer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver)=>{\n                        if (transceiver.direction /* guarding, but should always be true */ ) {\n                            if (transceiver.direction !== \"stopped\" && transceiver.direction !== answerDirection) transceiver.direction = answerDirection;\n                        }\n                    });\n                }\n                break;\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        return Promise.resolve();\n    }\n    /**\n   * Called when ICE gathering completes and resolves any waiting promise.\n   */ iceGatheringComplete() {\n        this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete\");\n        // clear timer if need be\n        if (this.iceGatheringCompleteTimeoutId !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - clearing timeout\");\n            clearTimeout(this.iceGatheringCompleteTimeoutId);\n            this.iceGatheringCompleteTimeoutId = undefined;\n        }\n        // resolve and cleanup promise if need be\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - resolving promise\");\n            this.iceGatheringCompleteResolve?.();\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n    }\n    /**\n   * Wait for ICE gathering to complete.\n   * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n   * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n   */ waitForIceGatheringComplete(restart = false, timeout = 0) {\n        this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete\");\n        if (this._peerConnection === undefined) return Promise.reject(new Error(\"Peer connection closed.\"));\n        // guard already complete\n        if (!restart && this._peerConnection.iceGatheringState === \"complete\") {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - already complete\");\n            return Promise.resolve();\n        }\n        // only one may be waiting, reject any prior\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise\");\n            this.iceGatheringCompleteReject?.(new Error(\"Promise superseded.\"));\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n        this.iceGatheringCompletePromise = new Promise((resolve, reject)=>{\n            this.iceGatheringCompleteResolve = resolve;\n            this.iceGatheringCompleteReject = reject;\n            if (timeout > 0) {\n                this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in \" + timeout);\n                this.iceGatheringCompleteTimeoutId = setTimeout(()=>{\n                    this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout\");\n                    this.iceGatheringComplete();\n                }, timeout);\n            }\n        });\n        return this.iceGatheringCompletePromise;\n    }\n    /**\n   * Initializes the peer connection event handlers\n   */ initPeerConnectionEventHandlers() {\n        this.logger.debug(\"SessionDescriptionHandler.initPeerConnectionEventHandlers\");\n        if (!this._peerConnection) throw new Error(\"Peer connection undefined.\");\n        const peerConnection = this._peerConnection;\n        peerConnection.onconnectionstatechange = (event)=>{\n            const newState = peerConnection.connectionState;\n            this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n            if (this._peerConnectionDelegate?.onconnectionstatechange) this._peerConnectionDelegate.onconnectionstatechange(event);\n        };\n        peerConnection.ondatachannel = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.ondatachannel\");\n            this._dataChannel = event.channel;\n            if (this.onDataChannel) this.onDataChannel(this._dataChannel);\n            if (this._peerConnectionDelegate?.ondatachannel) this._peerConnectionDelegate.ondatachannel(event);\n        };\n        peerConnection.onicecandidate = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.onicecandidate\");\n            if (this._peerConnectionDelegate?.onicecandidate) this._peerConnectionDelegate.onicecandidate(event);\n        };\n        peerConnection.onicecandidateerror = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.onicecandidateerror\");\n            if (this._peerConnectionDelegate?.onicecandidateerror) this._peerConnectionDelegate.onicecandidateerror(event);\n        };\n        peerConnection.oniceconnectionstatechange = (event)=>{\n            const newState = peerConnection.iceConnectionState;\n            this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n            if (this._peerConnectionDelegate?.oniceconnectionstatechange) this._peerConnectionDelegate.oniceconnectionstatechange(event);\n        };\n        peerConnection.onicegatheringstatechange = (event)=>{\n            const newState = peerConnection.iceGatheringState;\n            this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n            if (newState === \"complete\") this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n            if (this._peerConnectionDelegate?.onicegatheringstatechange) this._peerConnectionDelegate.onicegatheringstatechange(event);\n        };\n        peerConnection.onnegotiationneeded = (event)=>{\n            this.logger.debug(\"SessionDescriptionHandler.onnegotiationneeded\");\n            if (this._peerConnectionDelegate?.onnegotiationneeded) this._peerConnectionDelegate.onnegotiationneeded(event);\n        };\n        peerConnection.onsignalingstatechange = (event)=>{\n            const newState = peerConnection.signalingState;\n            this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n            if (this._peerConnectionDelegate?.onsignalingstatechange) this._peerConnectionDelegate.onsignalingstatechange(event);\n        };\n        // onstatsended is no longer a part of PeerConnection as per the specs so removing it\n        // peerConnection.onstatsended = (event): void => {\n        //     this.logger.debug(`SessionDescriptionHandler.onstatsended`);\n        //     if (this._peerConnectionDelegate?.onstatsended) {\n        //         this._peerConnectionDelegate.onstatsended(event);\n        //     }\n        // };\n        peerConnection.ontrack = (event)=>{\n            const kind = event.track.kind;\n            const enabled = event.track.enabled ? \"enabled\" : \"disabled\";\n            this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n            this.setRemoteTrack(event.track);\n            if (this._peerConnectionDelegate?.ontrack) this._peerConnectionDelegate.ontrack(event);\n        };\n    }\n}\nfunction $a0713fbd55f057e2$export$4ffaee600e913aea() {\n    const config = {\n        bundlePolicy: \"balanced\",\n        certificates: undefined,\n        iceCandidatePoolSize: 0,\n        iceServers: [\n            {\n                urls: \"stun:stun.l.google.com:19302\"\n            }\n        ],\n        iceTransportPolicy: \"all\",\n        rtcpMuxPolicy: \"require\"\n    };\n    return config;\n}\nfunction $a0713fbd55f057e2$export$1ffd34e85fb79026() {\n    return (constraints)=>{\n        // if no audio or video, return a media stream without tracks\n        if (!constraints.audio && !constraints.video) return Promise.resolve(new MediaStream());\n        // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n        // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n        // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n        // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n        if (navigator.mediaDevices === undefined) return Promise.reject(new Error(\"Media devices not available in insecure contexts.\"));\n        return navigator.mediaDevices.getUserMedia(constraints);\n    };\n}\nconst $a0713fbd55f057e2$export$32088792e7a5fd8d = (session, options)=>{\n    const mediaStreamFactory = $a0713fbd55f057e2$export$1ffd34e85fb79026();\n    // make sure we allow `0` to be passed in so timeout can be disabled\n    const iceGatheringTimeout = options?.iceGatheringTimeout !== undefined ? options?.iceGatheringTimeout : 5000;\n    // merge passed factory options into default session description configuration\n    const sessionDescriptionHandlerConfiguration = {\n        iceGatheringTimeout: iceGatheringTimeout,\n        enableDscp: options.enableDscp,\n        peerConnectionConfiguration: {\n            ...$a0713fbd55f057e2$export$4ffaee600e913aea(),\n            ...options?.peerConnectionConfiguration\n        }\n    };\n    const logger = session.userAgent.getLogger(\"sip.SessionDescriptionHandler\");\n    return new $a0713fbd55f057e2$export$4d703fa87dd9817a(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n};\n\n\nvar $8f13b60c0ee5b277$exports = {};\n$8f13b60c0ee5b277$exports = JSON.parse('{\"name\":\"ringcentral-web-phone\",\"version\":\"1.0.3\",\"homepage\":\"https://github.com/ringcentral/ringcentral-web-phone\",\"bugs\":{\"url\":\"https://github.com/ringcentral/ringcentral-web-phone/issues\"},\"repository\":{\"type\":\"git\",\"url\":\"git://github.com/ringcentral/ringcentral-web-phone.git\"},\"license\":\"MIT\",\"author\":{\"name\":\"RingCentral, Inc.\",\"email\":\"devsupport@ringcentral.com\"},\"contributors\":[{\"name\":\"Kirill Konshin\"},{\"name\":\"Elias Sun\"},{\"name\":\"Vyshakh Babji\"},{\"name\":\"Yatin Gera\"},{\"name\":\"Tyler Liu\"},{\"name\":\"Embbnux Ji\"}],\"main\":\"./lib/src/index.js\",\"types\":\"./lib/src/index.d.ts\",\"scripts\":{\"build\":\"rm -rf lib && yarn tsc && rm -rf docs && parcel build demo/index.html demo/callback.html --dist-dir docs --public-url ./\",\"lint\":\"eslint --fix \\'**/*.{ts,tsx,js,jsx}\\' && prettier --write . && sort-package-json\",\"serve\":\"rm -rf .parcel-cache && parcel demo/index.html demo/callback.html --dist-dir docs\",\"test\":\"jest src/mediaStreams.spec.ts\",\"test2\":\"NODE_OPTIONS=--require=dotenv-override-true/config playwright test test/index.spec.ts --workers=1\",\"test:coverage\":\"cat .coverage/lcov.info | coveralls -v\"},\"dependencies\":{\"sip.js\":\"^0.21.2\"},\"devDependencies\":{\"@faker-js/faker\":\"^8.4.1\",\"@playwright/test\":\"^1.44.1\",\"@rc-ex/core\":\"^1.3.15\",\"@ringcentral/sdk\":\"^5.0.1\",\"@types/jest\":\"^29.5.12\",\"@types/node\":\"^20.14.2\",\"@typescript-eslint/eslint-plugin\":\"^7.13.0\",\"@typescript-eslint/parser\":\"^7.13.0\",\"bootstrap\":\"3.4.1\",\"buffer\":\"^6.0.3\",\"coveralls\":\"^3.1.1\",\"crypto-browserify\":\"^3.12.0\",\"dotenv-override-true\":\"^6.2.2\",\"eslint\":\"8.57.0\",\"eslint-config-alloy\":\"^5.1.2\",\"eslint-config-prettier\":\"^9.1.0\",\"eslint-plugin-jest\":\"^28.6.0\",\"eslint-plugin-prettier\":\"^5.1.3\",\"events\":\"^3.3.0\",\"http-server\":\"^14.1.1\",\"jest\":\"^29.7.0\",\"jquery\":\"^3.7.1\",\"parcel\":\"^2.12.0\",\"prettier\":\"^3.3.1\",\"process\":\"^0.11.10\",\"querystring-es3\":\"^0.2.1\",\"sort-package-json\":\"^2.10.0\",\"stream-browserify\":\"^3.0.0\",\"ts-jest\":\"^29.1.4\",\"ts-node\":\"^10.9.2\",\"ttpt\":\"^0.9.6\",\"typescript\":\"^5.4.5\",\"wait-for-async\":\"^0.6.1\",\"yarn-upgrade-all\":\"^0.7.2\"},\"preferGlobal\":false,\"targets\":{\"main\":false,\"module\":false,\"types\":false,\"browser\":false},\"yarn-upgrade-all\":{\"ignore\":[\"bootstrap\",\"eslint\"]}}');\n\n\nconst $b4e14b6b8da86996$var$version = (0, (/*@__PURE__*/$parcel$interopDefault($8f13b60c0ee5b277$exports))).version;\nconst $b4e14b6b8da86996$var$defaultWebPhoneOptions = {\n    autoStop: true,\n    builtinEnabled: true,\n    earlyMedia: false,\n    enableDefaultModifiers: true,\n    enableDscp: false,\n    iceTransportPolicy: \"all\",\n    maxReconnectionAttemptsNoBackup: 15,\n    maxReconnectionAttemptsWithBackup: 10,\n    mediaConstraints: (0, $9ecda7333d28e490$export$5ba7149a85c7d1a0),\n    modifiers: [],\n    // FIXME: This should be in seconds since every other config is in seconds\n    qosCollectInterval: 5000,\n    reconnectionTimeoutNoBackup: 5,\n    reconnectionTimeoutWithBackup: 4,\n    transportServers: [],\n    turnServers: [],\n    uuid: (0, $df5bef30413a053b$export$31b40729666a4ae0)(),\n    uuidKey: $9ecda7333d28e490$export$1a2a4672f2aa1318\n};\nclass $b4e14b6b8da86996$export$2e2bcd8739ae039 {\n    /** WebPhone version */ static version = $b4e14b6b8da86996$var$version;\n    /** Utility function to generate uuid */ static uuid = (0, $df5bef30413a053b$export$31b40729666a4ae0);\n    /** Utility function to extend object */ static extend = (0, $df5bef30413a053b$export$8b58be045bf06082);\n    static MediaStreams = (0, $557a2ee3af030028$export$2e2bcd8739ae039);\n    static MediaStreamsImpl = (0, $557a2ee3af030028$export$2f9419ea90201913);\n    /** Sip Info received from the registration endpoint */ sipInfo;\n    /** Key that will be used to save uuid in localStorage */ uuidKey;\n    /** Name used in user agent string */ appName;\n    /** Version used in user agent string */ appVersion;\n    /** WebPhoneUserAgent instance */ userAgent;\n    /**\n   * TODO: include 'WebPhone' for all apps other than Chrome and Glip\n   * TODO: parse wsservers from new api spec\n   */ // eslint-disable-next-line complexity\n    constructor(registrationData = {}, _options = {}){\n        const options = {\n            ...$b4e14b6b8da86996$var$defaultWebPhoneOptions,\n            ..._options\n        };\n        this.sipInfo = registrationData.sipInfo;\n        if (Array.isArray(this.sipInfo)) this.sipInfo = this.sipInfo[0];\n        this.uuidKey = options.uuidKey;\n        this.appName = options.appName;\n        this.appVersion = options.appVersion;\n        const id = options.uuid;\n        localStorage.setItem(this.uuidKey, id);\n        const uaMatch = navigator.userAgent.match(/\\((.*?)\\)/);\n        const appClientOs = uaMatch === null ? \"\" : uaMatch[1].replace(/[^a-zA-Z0-9.:_]+/g, \"-\");\n        const userAgentString = (this.appName ? this.appName + (this.appVersion ? \"/\" + this.appVersion : \"\") + \" \" : \"\") + (appClientOs ? appClientOs : \"\") + ` RCWEBPHONE/${$b4e14b6b8da86996$export$2e2bcd8739ae039.version}`;\n        const modifiers = options.modifiers;\n        if (!options.enableDefaultModifiers) {\n            modifiers.push((0, $71514f66503c648c$exports).stripG722);\n            modifiers.push((0, $71514f66503c648c$exports).stripTcpCandidates);\n        }\n        if (options.enableMidLinesInSDP) modifiers.push((0, $71514f66503c648c$exports).addMidLines);\n        const sdpSemantics = options.enablePlanB ? \"plan-b\" : \"unified-plan\";\n        const stunServers = options.stunServers || (0, $9ecda7333d28e490$export$40da5b911536ffbf);\n        const iceTransportPolicy = options.iceTransportPolicy;\n        let iceServers = [];\n        if (options.enableTurnServers) {\n            iceServers = options.turnServers.map((url)=>({\n                    urls: url\n                }));\n            options.iceCheckingTimeout = options.iceCheckingTimeout || 2000;\n        }\n        iceServers = [\n            ...iceServers,\n            ...stunServers.map((_url)=>{\n                const url = !/^(stun:)/.test(_url) ? `stun:${_url}` : _url;\n                return {\n                    urls: url\n                };\n            })\n        ];\n        const sessionDescriptionHandlerFactoryOptions = options.sessionDescriptionHandlerFactoryOptions || {\n            iceGatheringTimeout: options.iceCheckingTimeout || 500,\n            enableDscp: options.enableDscp,\n            peerConnectionConfiguration: {\n                iceServers: iceServers,\n                iceTransportPolicy: iceTransportPolicy,\n                sdpSemantics: sdpSemantics\n            }\n        };\n        sessionDescriptionHandlerFactoryOptions.enableDscp = !!options.enableDscp;\n        options.modifiers = modifiers;\n        const browserUa = navigator.userAgent.toLowerCase();\n        if (browserUa.includes(\"firefox\") && !browserUa.includes(\"chrome\")) // FIXME: alwaysAcquireMediaFirst has been removed from SIP.js. Is it the same as earlyMedia?\n        options.earlyMedia = true;\n        const sessionDescriptionHandlerFactory = options.sessionDescriptionHandlerFactory || (0, $a0713fbd55f057e2$export$32088792e7a5fd8d);\n        const sipErrorCodes = registrationData.sipErrorCodes?.length ? registrationData.sipErrorCodes : (0, $9ecda7333d28e490$export$483a720d1bace4cd);\n        let reconnectionTimeout = options.reconnectionTimeoutWithBackup;\n        let maxReconnectionAttempts = options.maxReconnectionAttemptsWithBackup;\n        if (this.sipInfo.outboundProxy && this.sipInfo.transport) {\n            options.transportServers.push({\n                uri: this.sipInfo.transport.toLowerCase() + \"://\" + this.sipInfo.outboundProxy\n            });\n            reconnectionTimeout = options.reconnectionTimeoutNoBackup;\n            maxReconnectionAttempts = options.maxReconnectionAttemptsNoBackup;\n        }\n        if (this.sipInfo.outboundProxyBackup && this.sipInfo.transport) options.transportServers.push({\n            uri: this.sipInfo.transport.toLowerCase() + \"://\" + this.sipInfo.outboundProxyBackup\n        });\n        options.reconnectionTimeout = options.reconnectionTimeout || reconnectionTimeout;\n        options.maxReconnectionAttempts = options.maxReconnectionAttempts || maxReconnectionAttempts;\n        const transportServer = options.transportServers.length ? options.transportServers[0].uri : \"\";\n        const configuration = {\n            uri: (0, $3c1b5dfaafd922c7$export$5fba5e10934a4faf).makeURI(`sip:${this.sipInfo.username}@${this.sipInfo.domain}`),\n            transportOptions: {\n                server: transportServer,\n                traceSip: true,\n                connectionTimeout: 5,\n                keepAliveDebounce: options.keepAliveDebounce,\n                keepAliveInterval: options.keepAliveInterval\n            },\n            // WebPhoneTransport will handle reconnection.\n            reconnectionAttempts: 0,\n            authorizationUsername: this.sipInfo.authorizationId,\n            authorizationPassword: this.sipInfo.password,\n            logLevel: (0, $bb2da993b0fb58b9$export$7dc82a261720bb19)[options.logLevel] || (0, $9ecda7333d28e490$export$731d8a9cb69e4934),\n            logBuiltinEnabled: options.builtinEnabled,\n            logConnector: options.connector || undefined,\n            userAgentString: userAgentString,\n            sessionDescriptionHandlerFactoryOptions: sessionDescriptionHandlerFactoryOptions,\n            sessionDescriptionHandlerFactory: sessionDescriptionHandlerFactory,\n            allowLegacyNotifications: true\n        };\n        options.sipErrorCodes = sipErrorCodes;\n        options.switchBackInterval = this.sipInfo.switchBackInterval;\n        this.userAgent = (0, $049fac7af831ffeb$export$fa697dee51767d8e)(configuration, this.sipInfo, options, id);\n    }\n}\n\n\nvar $7d07e4d4306c7f9a$exports = {};\n$7d07e4d4306c7f9a$exports = new URL(\"incoming.4df5d2c2.ogg\", import.meta.url).toString();\n\n\nvar $bba1c2c9bd125e39$exports = {};\n$bba1c2c9bd125e39$exports = new URL(\"outgoing.32ff67a1.ogg\", import.meta.url).toString();\n\n\n$parcel$global.jQuery = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)));\n\n(parcelRequire(\"2yR94\"));\n(0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(()=>{\n    let sdk;\n    let platform;\n    let webPhone;\n    let logLevel = 0;\n    let extension;\n    let primaryNumber;\n    const $app = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#app\");\n    const $loginTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-login\");\n    const $authFlowTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-auth-flow\");\n    const $callTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-call\");\n    const $incomingTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-incoming\");\n    const $acceptedTemplate = (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))(\"#template-accepted\");\n    const remoteVideoElement = document.getElementById(\"remoteVideo\");\n    const localVideoElement = document.getElementById(\"localVideo\");\n    let outboundCall = true;\n    let confSessionId = \"\";\n    /**\n   * @param {jQuery|HTMLElement} $tpl\n   * @return {jQuery|HTMLElement}\n   */ function cloneTemplate($tpl) {\n        return (0, (/*@__PURE__*/$parcel$interopDefault($4eae0a726ab50395$exports)))($tpl.html());\n    }\n    function login(server, clientId, clientSecret, jwtToken, ll) {\n        sdk = new (0, $9fvPZ.SDK)({\n            clientId: clientId,\n            clientSecret: clientSecret,\n            server: server\n        });\n        platform = sdk.platform();\n        platform.login({\n            jwt: jwtToken\n        }).then(()=>{\n            return postLogin(server, clientId, clientSecret, jwtToken, ll);\n        }).catch((e)=>{\n            console.error(e.stack || e);\n        });\n    }\n    // Redirect function\n    function show3LeggedLogin(server, clientId, clientSecret, ll) {\n        const $redirectUri = decodeURIComponent(window.location.href.split(\"login\", 1) + \"callback.html\");\n        console.log(\"The redirect uri value :\", $redirectUri);\n        sdk = new (0, $9fvPZ.SDK)({\n            clientId: clientId,\n            clientSecret: clientSecret,\n            server: server,\n            redirectUri: $redirectUri\n        });\n        platform = sdk.platform();\n        const loginUrl = platform.loginUrl();\n        platform.loginWindow({\n            url: loginUrl\n        }) // this method also allows to supply more options to control window position\n        .then(platform.login.bind(platform)).then(()=>{\n            return postLogin(server, clientId, clientSecret, \"\", ll);\n        }).catch((e)=>{\n            console.error(e.stack || e);\n        });\n    }\n    function postLogin(server, clientId, clientSecret, jwtToken, ll) {\n        logLevel = ll;\n        localStorage.setItem(\"webPhoneServer\", server || \"\");\n        localStorage.setItem(\"webPhoneclientId\", clientId || \"\");\n        localStorage.setItem(\"webPhoneclientSecret\", clientSecret || \"\");\n        if (jwtToken && jwtToken.length > 0) localStorage.setItem(\"webPhoneJwtToken\", jwtToken);\n        localStorage.setItem(\"webPhoneLogLevel\", (logLevel || 0).toString());\n        return platform.get(\"/restapi/v1.0/account/~/extension/~\").then((res)=>res.json()).then((res)=>{\n            extension = res;\n            console.log(\"Extension info\", extension);\n            return platform.get(\"/restapi/v1.0/account/~/extension/~/phone-number\");\n        }).then((res)=>res.json()).then((r)=>{\n            primaryNumber = r.records.filter((r)=>r.primary === true)[0].phoneNumber;\n        }).then(()=>{\n            return platform.post(\"/restapi/v1.0/client-info/sip-provision\", {\n                sipInfo: [\n                    {\n                        transport: \"WSS\"\n                    }\n                ]\n            });\n        }).then((res)=>res.json()).then(register).then(makeCallForm).catch((e)=>{\n            console.error(\"Error in main promise chain\");\n            console.error(e.stack || e);\n        });\n    }\n    function register(data) {\n        webPhone = new (0, $b4e14b6b8da86996$export$2e2bcd8739ae039)(data, {\n            enableDscp: true,\n            clientId: localStorage.getItem(\"webPhoneclientId\"),\n            audioHelper: {\n                enabled: true,\n                incoming: (0, (/*@__PURE__*/$parcel$interopDefault($7d07e4d4306c7f9a$exports))),\n                outgoing: (0, (/*@__PURE__*/$parcel$interopDefault($bba1c2c9bd125e39$exports)))\n            },\n            logLevel: logLevel,\n            appName: \"WebPhoneDemo\",\n            appVersion: \"1.0.0\",\n            media: {\n                remote: remoteVideoElement,\n                local: localVideoElement\n            },\n            enableQos: true,\n            enableMediaReportLogging: true\n        });\n        $parcel$global.webPhone = webPhone; // for debugging\n        webPhone.userAgent.audioHelper.setVolume(0.3);\n        webPhone.userAgent.on(\"invite\", onInvite);\n        webPhone.userAgent.on(\"connecting\", ()=>{\n            console.log(\"UA connecting\");\n        });\n        webPhone.userAgent.on(\"connected\", ()=>{\n            console.log(\"UA Connected\");\n        });\n        webPhone.userAgent.on(\"disconnected\", ()=>{\n            console.log(\"UA Disconnected\");\n        });\n        webPhone.userAgent.on(\"registered\", ()=>{\n            console.log(\"UA Registered\");\n        });\n        webPhone.userAgent.on(\"unregistered\", ()=>{\n            console.log(\"UA Unregistered\");\n        });\n        webPhone.userAgent.on(\"registrationFailed\", function() {\n            console.log(\"UA RegistrationFailed\", arguments);\n        });\n        webPhone.userAgent.on(\"message\", function() {\n            console.log(\"UA Message\", arguments);\n        });\n        webPhone.userAgent.transport.on(\"switchBackProxy\", ()=>{\n            console.log(\"switching back to primary outbound proxy\");\n            webPhone.userAgent.transport.reconnect();\n        });\n        webPhone.userAgent.transport.on(\"closed\", ()=>{\n            console.log(\"WebSocket closed.\");\n        });\n        webPhone.userAgent.transport.on(\"transportError\", ()=>{\n            console.log(\"WebSocket transportError occured\");\n        });\n        webPhone.userAgent.transport.on(\"wsConnectionError\", ()=>{\n            console.log(\"WebSocket wsConnectionError occured\");\n        });\n        return webPhone;\n    }\n    function onInvite(session) {\n        const $modal = cloneTemplate($incomingTemplate).modal({\n            backdrop: \"static\"\n        });\n        session.stateChange.addListener((newState)=>{\n            switch(newState){\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                    console.log(\"Initial\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                    console.log(\"Establishing\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                    console.log(\"Established\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                    console.log(\"Terminating\");\n                    $modal.modal(\"hide\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                    console.log(\"Terminated\");\n                    $modal.modal(\"hide\");\n                    break;\n            }\n        });\n        outboundCall = false;\n        console.log(\"EVENT: Invite\", session.request);\n        console.log(\"To\", session.request.to.displayName, session.request.to.friendlyName);\n        console.log(\"From\", session.request.from.displayName, session.request.from.friendlyName);\n        if (session.request.headers[\"Alert-Info\"] && session.request.headers[\"Alert-Info\"][0].raw === \"Auto Answer\") session.accept().then(()=>{\n            onAccepted(session);\n        }).catch((e)=>{\n            console.error(\"Accept failed\", e.stack || e);\n        });\n        else {\n            $modal.find(\".answer\").on(\"click\", ()=>{\n                $modal.find(\".before-answer\").css(\"display\", \"none\");\n                $modal.find(\".answered\").css(\"display\", \"\");\n                session.accept().then(()=>{\n                    $modal.modal(\"hide\");\n                    onAccepted(session);\n                }).catch((e)=>{\n                    console.error(\"Accept failed\", e.stack || e);\n                });\n            });\n            $modal.find(\".decline\").on(\"click\", ()=>{\n                session.reject();\n                $modal.modal(\"hide\");\n            });\n            $modal.find(\".toVoicemail\").on(\"click\", ()=>{\n                session.toVoicemail();\n                $modal.modal(\"hide\");\n            });\n            $modal.find(\".forward-form\").on(\"submit\", (e)=>{\n                e.preventDefault();\n                e.stopPropagation();\n                session.forward($modal.find(\"input[name=forward]\").val().trim()).then(()=>{\n                    console.log(\"Forwarded\");\n                    $modal.modal(\"hide\");\n                }).catch((e2)=>{\n                    console.error(\"Forward failed\", e2.stack || e2);\n                });\n            });\n            $modal.find(\".reply-form\").on(\"submit\", (e)=>{\n                e.preventDefault();\n                e.stopPropagation();\n                session.replyWithMessage({\n                    replyType: 0,\n                    replyText: $modal.find(\"input[name=reply]\").val()\n                }).then(()=>{\n                    console.log(\"Replied\");\n                    $modal.modal(\"hide\");\n                }).catch((e2)=>{\n                    console.error(\"Reply failed\", e2.stack || e2);\n                });\n            });\n        }\n    }\n    const activeCallInfoTemplate = ()=>({\n            id: \"\",\n            from: \"\",\n            to: \"\",\n            direction: \"\",\n            sipData: {\n                toTag: \"\",\n                fromTag: \"\"\n            }\n        });\n    function captureActiveCallInfo(session) {\n        const direction = outboundCall ? \"Outbound\" : \"Inbound\";\n        const activeCallInfo = activeCallInfoTemplate();\n        activeCallInfo.from = session.request.from.uri.user;\n        activeCallInfo.to = session.request.to.uri.user;\n        activeCallInfo.direction = direction;\n        activeCallInfo.id = session.dialog.id.callId;\n        activeCallInfo.sipData.fromTag = session.dialog.remoteTag;\n        activeCallInfo.sipData.toTag = session.dialog.localTag;\n        if (!localStorage.getItem(\"activeCallInfo\")) localStorage.setItem(\"activeCallInfo\", JSON.stringify(activeCallInfo));\n    }\n    function onAccepted(session) {\n        console.log(\"EVENT: Accepted\", session.request);\n        console.log(\"To\", session.request.to.displayName, session.request.to.friendlyName);\n        console.log(\"From\", session.request.from.displayName, session.request.from.friendlyName);\n        const $modal = cloneTemplate($acceptedTemplate).modal();\n        const $info = $modal.find(\".info\").eq(0);\n        const $dtmf = $modal.find(\"input[name=dtmf]\").eq(0);\n        const $transfer = $modal.find(\"input[name=transfer]\").eq(0);\n        const $flip = $modal.find(\"input[name=flip]\").eq(0);\n        const interval = setInterval(()=>{\n            const time = session.startTime ? Math.round((Date.now() - session.startTime) / 1000) + \"s\" : \"Ringing\";\n            $info.text(\"time: \" + time + \"\\nstartTime: \" + JSON.stringify(session.startTime, null, 2) + \"\\n\");\n        }, 1000);\n        function closeModal() {\n            clearInterval(interval);\n            $modal.modal(\"hide\");\n        }\n        $modal.find(\".increase-volume\").on(\"click\", ()=>{\n            session.userAgent.audioHelper.setVolume((session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) + 0.1);\n        });\n        $modal.find(\".decrease-volume\").on(\"click\", ()=>{\n            session.userAgent.audioHelper.setVolume((session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) - 0.1);\n        });\n        $modal.find(\".mute\").on(\"click\", ()=>{\n            session.mute();\n        });\n        $modal.find(\".unmute\").on(\"click\", ()=>{\n            session.unmute();\n        });\n        $modal.find(\".hold\").on(\"click\", ()=>{\n            session.hold().then(()=>{\n                console.log(\"Holding\");\n            }).catch((e)=>{\n                console.error(\"Holding failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".unhold\").on(\"click\", ()=>{\n            session.unhold().then(()=>{\n                console.log(\"UnHolding\");\n            }).catch((e)=>{\n                console.error(\"UnHolding failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".startRecord\").on(\"click\", ()=>{\n            session.startRecord().then(()=>{\n                console.log(\"Recording Started\");\n            }).catch((e)=>{\n                console.error(\"Recording Start failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".stopRecord\").on(\"click\", ()=>{\n            session.stopRecord().then(()=>{\n                console.log(\"Recording Stopped\");\n            }).catch((e)=>{\n                console.error(\"Recording Stop failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".park\").on(\"click\", ()=>{\n            session.park().then(()=>{\n                console.log(\"Parked\");\n            }).catch((e)=>{\n                console.error(\"Park failed\", e.stack || e);\n            });\n        });\n        $modal.find(\".transfer-form\").on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.transfer($transfer.val().trim()).then(()=>{\n                console.log(\"Transferred\");\n                $modal.modal(\"hide\");\n            }).catch((e2)=>{\n                console.error(\"Transfer failed\", e2.stack || e2);\n            });\n        });\n        $modal.find(\".transfer-form button.warm\").on(\"click\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.hold().then(()=>{\n                console.log(\"Placing the call on hold, initiating attended transfer\");\n                const newSession = session.userAgent.invite($transfer.val().trim());\n                newSession.once(\"established\", ()=>{\n                    console.log(\"New call initated. Click Complete to complete the transfer\");\n                    $modal.find(\".transfer-form button.complete\").on(\"click\", ()=>{\n                        session.warmTransfer(newSession).then(()=>{\n                            console.log(\"Warm transfer completed\");\n                        }).catch((e2)=>{\n                            console.error(\"Transfer failed\", e2.stack || e2);\n                        });\n                    });\n                });\n            });\n        });\n        $modal.find(\".flip-form\").on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.flip($flip.val().trim()).then(()=>{\n                console.log(\"Flipped\");\n            }).catch((e2)=>{\n                console.error(\"Flip failed\", e2.stack || e2);\n            });\n            $flip.val(\"\");\n        });\n        $modal.find(\".dtmf-form\").on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            session.dtmf($dtmf.val().trim());\n            $dtmf.val(\"\");\n        });\n        const $startConfButton = $modal.find(\".startConf\");\n        $startConfButton.on(\"click\", ()=>{\n            initConference();\n        });\n        $modal.find(\".hangup\").on(\"click\", ()=>{\n            session.dispose();\n        });\n        session.stateChange.addListener((newState)=>{\n            switch(newState){\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Initial:\n                    console.log(\"Initial\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Establishing:\n                    console.log(\"Establishing\");\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established:\n                    console.log(\"Established\");\n                    captureActiveCallInfo(session);\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminating:\n                    console.log(\"Terminating\");\n                    closeModal();\n                    break;\n                case (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Terminated:\n                    console.log(\"Terminated\");\n                    closeModal();\n                    localStorage.setItem(\"activeCallInfo\", \"\");\n                    break;\n            }\n        });\n        session.on(\"refer\", ()=>{\n            console.log(\"Event: Refer\");\n            closeModal();\n        });\n        session.on(\"replaced\", (newSession)=>{\n            console.log(\"Event: Replaced: old session\", session, \"has been replaced with\", newSession);\n            closeModal();\n            onAccepted(newSession);\n        });\n        session.on(\"dtmf\", ()=>{\n            console.log(\"Event: DTMF\");\n        });\n        session.on(\"muted\", ()=>{\n            console.log(\"Event: Muted\");\n        });\n        session.on(\"unmuted\", ()=>{\n            console.log(\"Event: Unmuted\");\n        });\n    }\n    function makeCall(number, homeCountryId) {\n        outboundCall = true;\n        // eslint-disable-next-line no-param-reassign\n        homeCountryId = homeCountryId || extension?.regionalSettings?.homeCountry?.id || null;\n        const session = webPhone.userAgent.invite(number, {\n            fromNumber: primaryNumber,\n            homeCountryId: homeCountryId\n        });\n        onAccepted(session);\n    }\n    function switchCall() {\n        const activeCallItem = JSON.parse(localStorage.getItem(\"activeCallInfo\"));\n        console.log(\"Switching active call to current tab: \", activeCallItem);\n        const session = webPhone.userAgent.switchFrom(activeCallItem, {});\n        onAccepted(session);\n    }\n    let onConference = false;\n    function initConference() {\n        if (!onConference) getPresenceActiveCalls().then((res)=>res.json()).then((response)=>{\n            const partyId = response.activeCalls[0].partyId;\n            const telephonySessionId = response.activeCalls[0].telephonySessionId;\n            getConfVoiceToken().then((voiceToken)=>{\n                startConferenceCall(voiceToken, partyId, telephonySessionId);\n                onConference = true;\n            });\n        });\n        else alert(\"A conference is already in progress\");\n    }\n    function getPresenceActiveCalls() {\n        return platform.get(\"/restapi/v1.0/account/~/extension/~/presence?detailedTelephonyState=true\");\n    }\n    function getConfVoiceToken() {\n        return platform.post(\"/restapi/v1.0/account/~/telephony/conference\", {}).then((res)=>res.json()).then((res)=>{\n            confSessionId = res.session.id;\n            return res.session.voiceCallToken;\n        });\n    }\n    function startConferenceCall(voiceToken, partyId, telephonySessionId) {\n        const session = webPhone.userAgent.invite(voiceToken, {\n            fromNumber: primaryNumber\n        });\n        session.stateChange.addListener((newState)=>{\n            if (newState === (0, $13c8043412d0bf9c$export$84bf1aca7aacb716).Established) {\n                onAccepted(session);\n                console.log(\"Conference call started\");\n                bringIn(telephonySessionId, partyId).then((res)=>res.json()).then((response)=>{\n                    console.log(\"Adding call to conference succesful\", response);\n                }).catch((e)=>{\n                    console.error(\"Conference call failed\", e.stack || e);\n                });\n            }\n        });\n    }\n    function bringIn(telephonySessionId, partyId) {\n        const url = \"/restapi/v1.0/account/~/telephony/sessions/\" + confSessionId + \"/parties/bring-in\";\n        return platform.post(url, {\n            telephonySessionId: telephonySessionId,\n            partyId: partyId\n        });\n    }\n    function makeCallForm() {\n        const $form = cloneTemplate($callTemplate);\n        const $number = $form.find(\"input[name=number]\").eq(0);\n        const $homeCountry = $form.find(\"input[name=homeCountry]\").eq(0);\n        const $username = $form.find(\".username\").eq(0);\n        const $logout = $form.find(\".logout\").eq(0);\n        const $switch = $form.find(\".switch\").eq(0);\n        $username.html(\"<dl><dt>Contact</dt><dd>\" + extension.contact.firstName + \" \" + extension.contact.lastName + \"</dd>\" + \"<dt>Company</dt><dd>\" + (extension.contact.company || \"?\") + \"</dd>\" + \"<dt>From Phone Number</dt><dd>\" + primaryNumber + \"</dd>\" + \"</dl>\");\n        $logout.on(\"click\", (e)=>{\n            webPhone.userAgent.unregister();\n            e.preventDefault();\n            location.reload();\n        });\n        $switch.on(\"click\", ()=>{\n            switchCall();\n        });\n        $number.val(localStorage.getItem(\"webPhoneLastNumber\") || \"\");\n        $form.on(\"submit\", (e)=>{\n            e.preventDefault();\n            e.stopPropagation();\n            localStorage.setItem(\"webPhoneLastNumber\", $number.val() || \"\");\n            makeCall($number.val(), $homeCountry.val());\n        });\n        $app.empty().append($form);\n    }\n    function makeLoginForm() {\n        const $form = cloneTemplate($loginTemplate);\n        const $authForm = cloneTemplate($authFlowTemplate);\n        const $server = $authForm.find(\"input[name=server]\").eq(0);\n        const $clientId = $authForm.find(\"input[name=clientId]\").eq(0);\n        const $clientSecret = $authForm.find(\"input[name=clientSecret]\").eq(0);\n        const $jwtToken = $form.find(\"input[name=jwtToken]\").eq(0);\n        const $logLevel = $authForm.find(\"select[name=logLevel]\").eq(0);\n        $server.val(localStorage.getItem(\"webPhoneServer\") || (0, $9fvPZ.SDK).server.sandbox);\n        $clientId.val(localStorage.getItem(\"webPhoneclientId\") || \"\");\n        $clientSecret.val(localStorage.getItem(\"webPhoneclientSecret\") || \"\");\n        $jwtToken.val(localStorage.getItem(\"webPhoneJwtToken\") || \"\");\n        $logLevel.val(localStorage.getItem(\"webPhoneLogLevel\") || logLevel);\n        $form.on(\"submit\", (e)=>{\n            console.log(\"Normal Flow\");\n            e.preventDefault();\n            e.stopPropagation();\n            login($server.val(), $clientId.val(), $clientSecret.val(), $jwtToken.val(), $logLevel.val());\n        });\n        //\n        $authForm.on(\"submit\", (e)=>{\n            console.log(\"Authorized Flow\");\n            e.preventDefault();\n            e.stopPropagation();\n            show3LeggedLogin($server.val(), $clientId.val(), $clientSecret.val(), $logLevel.val());\n        });\n        $app.empty().append($authForm).append($form);\n    }\n    makeLoginForm();\n});\n\n\n//# sourceMappingURL=index.9050f078.js.map\n","let load = require('./helpers/browser/esm-js-loader');\nmodule.exports = (load(\"ezIAn\")).then(() => parcelRequire('9YWKS'));","\"use strict\";\n\nfunction load(id) {\n  // eslint-disable-next-line no-undef\n  return __parcel__import__(require('../bundle-manifest').resolve(id));\n}\nmodule.exports = load;","/* eslint-disable max-params */\n/* eslint-disable max-nested-callbacks */\nimport $ from 'jquery';\nimport { SDK } from '@ringcentral/sdk';\nimport 'bootstrap/dist/css/bootstrap.min.css';\nimport type Platform from '@ringcentral/sdk/lib/platform/Platform';\nimport { SessionState } from 'sip.js';\n\nimport WebPhone from '../src/index';\nimport incomingAudio from 'url:./audio/incoming.ogg';\nimport outgoingAudio from 'url:./audio/outgoing.ogg';\nimport type { WebPhoneInvitation } from '../src/session';\nglobal.jQuery = $;\nimport('bootstrap');\n\n$(() => {\n  let sdk: SDK;\n  let platform: Platform;\n  let webPhone: WebPhone;\n\n  let logLevel: 0 | 1 | 2 | 3 = 0;\n  let extension: any;\n  let primaryNumber: string;\n  const $app = $('#app');\n\n  const $loginTemplate = $('#template-login');\n  const $authFlowTemplate = $('#template-auth-flow');\n  const $callTemplate = $('#template-call');\n  const $incomingTemplate = $('#template-incoming');\n  const $acceptedTemplate = $('#template-accepted');\n\n  const remoteVideoElement = document.getElementById('remoteVideo') as HTMLMediaElement;\n  const localVideoElement = document.getElementById('localVideo') as HTMLMediaElement;\n  let outboundCall = true;\n  let confSessionId = '';\n\n  /**\n   * @param {jQuery|HTMLElement} $tpl\n   * @return {jQuery|HTMLElement}\n   */\n  function cloneTemplate($tpl) {\n    return $($tpl.html());\n  }\n\n  function login(server, clientId, clientSecret, jwtToken, ll) {\n    sdk = new SDK({\n      clientId,\n      clientSecret,\n      server,\n    });\n\n    platform = sdk.platform();\n\n    platform\n      .login({\n        jwt: jwtToken,\n      })\n      .then(() => {\n        return postLogin(server, clientId, clientSecret, jwtToken, ll);\n      })\n      .catch((e) => {\n        console.error(e.stack || e);\n      });\n  }\n\n  // Redirect function\n  function show3LeggedLogin(server, clientId, clientSecret, ll) {\n    const $redirectUri = decodeURIComponent(window.location.href.split('login', 1) + 'callback.html');\n\n    console.log('The redirect uri value :', $redirectUri);\n\n    sdk = new SDK({\n      clientId,\n      clientSecret,\n      server,\n      redirectUri: $redirectUri,\n    });\n\n    platform = sdk.platform();\n\n    const loginUrl = platform.loginUrl();\n\n    platform\n      .loginWindow({ url: loginUrl }) // this method also allows to supply more options to control window position\n      .then(platform.login.bind(platform))\n      .then(() => {\n        return postLogin(server, clientId, clientSecret, '', ll);\n      })\n      .catch((e) => {\n        console.error(e.stack || e);\n      });\n  }\n\n  function postLogin(server, clientId, clientSecret, jwtToken, ll) {\n    logLevel = ll;\n\n    localStorage.setItem('webPhoneServer', server || '');\n    localStorage.setItem('webPhoneclientId', clientId || '');\n    localStorage.setItem('webPhoneclientSecret', clientSecret || '');\n    if (jwtToken && jwtToken.length > 0) {\n      localStorage.setItem('webPhoneJwtToken', jwtToken);\n    }\n    localStorage.setItem('webPhoneLogLevel', (logLevel || 0).toString());\n\n    return platform\n      .get('/restapi/v1.0/account/~/extension/~')\n      .then((res) => res.json())\n      .then((res) => {\n        extension = res;\n        console.log('Extension info', extension);\n        return platform.get('/restapi/v1.0/account/~/extension/~/phone-number');\n      })\n      .then((res) => res.json())\n      .then((r) => {\n        primaryNumber = r.records.filter((r) => r.primary === true)[0].phoneNumber;\n      })\n      .then(() => {\n        return platform.post('/restapi/v1.0/client-info/sip-provision', {\n          sipInfo: [\n            {\n              transport: 'WSS',\n            },\n          ],\n        });\n      })\n      .then((res) => res.json())\n      .then(register)\n      .then(makeCallForm)\n      .catch((e) => {\n        console.error('Error in main promise chain');\n        console.error(e.stack || e);\n      });\n  }\n\n  function register(data) {\n    webPhone = new WebPhone(data, {\n      enableDscp: true,\n      clientId: localStorage.getItem('webPhoneclientId')!,\n      audioHelper: {\n        enabled: true,\n        incoming: incomingAudio,\n        outgoing: outgoingAudio,\n      },\n      logLevel,\n      appName: 'WebPhoneDemo',\n      appVersion: '1.0.0',\n      media: {\n        remote: remoteVideoElement,\n        local: localVideoElement,\n      },\n      enableQos: true,\n      enableMediaReportLogging: true,\n    });\n    global.webPhone = webPhone; // for debugging\n\n    webPhone.userAgent.audioHelper.setVolume(0.3);\n    webPhone.userAgent.on('invite', onInvite);\n    webPhone.userAgent.on('connecting', () => {\n      console.log('UA connecting');\n    });\n    webPhone.userAgent.on('connected', () => {\n      console.log('UA Connected');\n    });\n    webPhone.userAgent.on('disconnected', () => {\n      console.log('UA Disconnected');\n    });\n    webPhone.userAgent.on('registered', () => {\n      console.log('UA Registered');\n    });\n    webPhone.userAgent.on('unregistered', () => {\n      console.log('UA Unregistered');\n    });\n    webPhone.userAgent.on('registrationFailed', function () {\n      console.log('UA RegistrationFailed', arguments);\n    });\n    webPhone.userAgent.on('message', function () {\n      console.log('UA Message', arguments);\n    });\n    webPhone.userAgent.transport.on('switchBackProxy', () => {\n      console.log('switching back to primary outbound proxy');\n      webPhone.userAgent.transport.reconnect();\n    });\n    webPhone.userAgent.transport.on('closed', () => {\n      console.log('WebSocket closed.');\n    });\n    webPhone.userAgent.transport.on('transportError', () => {\n      console.log('WebSocket transportError occured');\n    });\n    webPhone.userAgent.transport.on('wsConnectionError', () => {\n      console.log('WebSocket wsConnectionError occured');\n    });\n    return webPhone;\n  }\n\n  function onInvite(session: WebPhoneInvitation) {\n    const $modal = cloneTemplate($incomingTemplate).modal({\n      backdrop: 'static',\n    });\n\n    session.stateChange.addListener((newState: SessionState) => {\n      switch (newState) {\n        case SessionState.Initial: {\n          console.log('Initial');\n          break;\n        }\n        case SessionState.Establishing: {\n          console.log('Establishing');\n          break;\n        }\n        case SessionState.Established: {\n          console.log('Established');\n          break;\n        }\n        case SessionState.Terminating: {\n          console.log('Terminating');\n          $modal.modal('hide');\n          break;\n        }\n        case SessionState.Terminated: {\n          console.log('Terminated');\n          $modal.modal('hide');\n          break;\n        }\n      }\n    });\n\n    outboundCall = false;\n    console.log('EVENT: Invite', session.request);\n    console.log('To', session.request.to.displayName, session.request.to.friendlyName);\n    console.log('From', session.request.from.displayName, session.request.from.friendlyName);\n\n    if (session.request.headers['Alert-Info'] && session.request.headers['Alert-Info'][0].raw === 'Auto Answer') {\n      session\n        .accept()\n        .then(() => {\n          onAccepted(session);\n        })\n        .catch((e) => {\n          console.error('Accept failed', e.stack || e);\n        });\n    } else {\n      $modal.find('.answer').on('click', () => {\n        $modal.find('.before-answer').css('display', 'none');\n        $modal.find('.answered').css('display', '');\n        session\n          .accept()\n          .then(() => {\n            $modal.modal('hide');\n            onAccepted(session);\n          })\n          .catch((e) => {\n            console.error('Accept failed', e.stack || e);\n          });\n      });\n\n      $modal.find('.decline').on('click', () => {\n        session.reject();\n        $modal.modal('hide');\n      });\n\n      $modal.find('.toVoicemail').on('click', () => {\n        session.toVoicemail!();\n        $modal.modal('hide');\n      });\n\n      $modal.find('.forward-form').on('submit', (e) => {\n        e.preventDefault();\n        e.stopPropagation();\n        session.forward!($modal.find('input[name=forward]').val().trim())\n          .then(() => {\n            console.log('Forwarded');\n            $modal.modal('hide');\n          })\n          .catch((e2) => {\n            console.error('Forward failed', e2.stack || e2);\n          });\n      });\n\n      $modal.find('.reply-form').on('submit', (e) => {\n        e.preventDefault();\n        e.stopPropagation();\n        session.replyWithMessage!({\n          replyType: 0,\n          replyText: $modal.find('input[name=reply]').val(),\n        })\n          .then(() => {\n            console.log('Replied');\n            $modal.modal('hide');\n          })\n          .catch((e2) => {\n            console.error('Reply failed', e2.stack || e2);\n          });\n      });\n    }\n  }\n\n  const activeCallInfoTemplate = () => ({\n    id: '',\n    from: '',\n    to: '',\n    direction: '',\n    sipData: {\n      toTag: '',\n      fromTag: '',\n    },\n  });\n\n  function captureActiveCallInfo(session) {\n    const direction = outboundCall ? 'Outbound' : 'Inbound';\n    const activeCallInfo = activeCallInfoTemplate();\n    activeCallInfo.from = session.request.from.uri.user;\n    activeCallInfo.to = session.request.to.uri.user;\n    activeCallInfo.direction = direction;\n    activeCallInfo.id = session.dialog.id.callId;\n    activeCallInfo.sipData.fromTag = session.dialog.remoteTag;\n    activeCallInfo.sipData.toTag = session.dialog.localTag;\n    if (!localStorage.getItem('activeCallInfo')) {\n      localStorage.setItem('activeCallInfo', JSON.stringify(activeCallInfo));\n    }\n  }\n\n  function onAccepted(session) {\n    console.log('EVENT: Accepted', session.request);\n    console.log('To', session.request.to.displayName, session.request.to.friendlyName);\n    console.log('From', session.request.from.displayName, session.request.from.friendlyName);\n\n    const $modal = cloneTemplate($acceptedTemplate).modal();\n\n    const $info = $modal.find('.info').eq(0);\n    const $dtmf = $modal.find('input[name=dtmf]').eq(0);\n    const $transfer = $modal.find('input[name=transfer]').eq(0);\n    const $flip = $modal.find('input[name=flip]').eq(0);\n\n    const interval = setInterval(() => {\n      const time = session.startTime ? Math.round((Date.now() - session.startTime) / 1000) + 's' : 'Ringing';\n      $info.text('time: ' + time + '\\nstartTime: ' + JSON.stringify(session.startTime, null, 2) + '\\n');\n    }, 1000);\n\n    function closeModal() {\n      clearInterval(interval);\n      $modal.modal('hide');\n    }\n\n    $modal.find('.increase-volume').on('click', () => {\n      session.userAgent.audioHelper.setVolume(\n        (session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) + 0.1,\n      );\n    });\n\n    $modal.find('.decrease-volume').on('click', () => {\n      session.userAgent.audioHelper.setVolume(\n        (session.userAgent.audioHelper.volume !== null ? session.userAgent.audioHelper.volume : 0.5) - 0.1,\n      );\n    });\n\n    $modal.find('.mute').on('click', () => {\n      session.mute();\n    });\n\n    $modal.find('.unmute').on('click', () => {\n      session.unmute();\n    });\n\n    $modal.find('.hold').on('click', () => {\n      session\n        .hold()\n        .then(() => {\n          console.log('Holding');\n        })\n        .catch((e) => {\n          console.error('Holding failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.unhold').on('click', () => {\n      session\n        .unhold()\n        .then(() => {\n          console.log('UnHolding');\n        })\n        .catch((e) => {\n          console.error('UnHolding failed', e.stack || e);\n        });\n    });\n    $modal.find('.startRecord').on('click', () => {\n      session\n        .startRecord()\n        .then(() => {\n          console.log('Recording Started');\n        })\n        .catch((e) => {\n          console.error('Recording Start failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.stopRecord').on('click', () => {\n      session\n        .stopRecord()\n        .then(() => {\n          console.log('Recording Stopped');\n        })\n        .catch((e) => {\n          console.error('Recording Stop failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.park').on('click', () => {\n      session\n        .park()\n        .then(() => {\n          console.log('Parked');\n        })\n        .catch((e) => {\n          console.error('Park failed', e.stack || e);\n        });\n    });\n\n    $modal.find('.transfer-form').on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session\n        .transfer($transfer.val().trim())\n        .then(() => {\n          console.log('Transferred');\n          $modal.modal('hide');\n        })\n        .catch((e2) => {\n          console.error('Transfer failed', e2.stack || e2);\n        });\n    });\n\n    $modal.find('.transfer-form button.warm').on('click', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session.hold().then(() => {\n        console.log('Placing the call on hold, initiating attended transfer');\n        const newSession = session.userAgent.invite($transfer.val().trim());\n        newSession.once('established', () => {\n          console.log('New call initated. Click Complete to complete the transfer');\n          $modal.find('.transfer-form button.complete').on('click', () => {\n            session\n              .warmTransfer(newSession)\n              .then(() => {\n                console.log('Warm transfer completed');\n              })\n              .catch((e2) => {\n                console.error('Transfer failed', e2.stack || e2);\n              });\n          });\n        });\n      });\n    });\n\n    $modal.find('.flip-form').on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session\n        .flip($flip.val().trim())\n        .then(() => {\n          console.log('Flipped');\n        })\n        .catch((e2) => {\n          console.error('Flip failed', e2.stack || e2);\n        });\n      $flip.val('');\n    });\n\n    $modal.find('.dtmf-form').on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n      session.dtmf($dtmf.val().trim());\n      $dtmf.val('');\n    });\n\n    const $startConfButton = $modal.find('.startConf');\n\n    $startConfButton.on('click', () => {\n      initConference();\n    });\n\n    $modal.find('.hangup').on('click', () => {\n      session.dispose();\n    });\n\n    session.stateChange.addListener((newState: SessionState) => {\n      switch (newState) {\n        case SessionState.Initial: {\n          console.log('Initial');\n          break;\n        }\n        case SessionState.Establishing: {\n          console.log('Establishing');\n          break;\n        }\n        case SessionState.Established: {\n          console.log('Established');\n          captureActiveCallInfo(session);\n          break;\n        }\n        case SessionState.Terminating: {\n          console.log('Terminating');\n          closeModal();\n          break;\n        }\n        case SessionState.Terminated: {\n          console.log('Terminated');\n          closeModal();\n          localStorage.setItem('activeCallInfo', '');\n          break;\n        }\n      }\n    });\n\n    session.on('refer', () => {\n      console.log('Event: Refer');\n      closeModal();\n    });\n    session.on('replaced', (newSession) => {\n      console.log('Event: Replaced: old session', session, 'has been replaced with', newSession);\n      closeModal();\n      onAccepted(newSession);\n    });\n    session.on('dtmf', () => {\n      console.log('Event: DTMF');\n    });\n    session.on('muted', () => {\n      console.log('Event: Muted');\n    });\n    session.on('unmuted', () => {\n      console.log('Event: Unmuted');\n    });\n  }\n\n  function makeCall(number, homeCountryId) {\n    outboundCall = true;\n    // eslint-disable-next-line no-param-reassign\n    homeCountryId = homeCountryId || extension?.regionalSettings?.homeCountry?.id || null;\n\n    const session = webPhone.userAgent.invite(number, {\n      fromNumber: primaryNumber,\n      homeCountryId,\n    });\n\n    onAccepted(session);\n  }\n\n  function switchCall() {\n    const activeCallItem = JSON.parse(localStorage.getItem('activeCallInfo')!);\n    console.log('Switching active call to current tab: ', activeCallItem);\n    const session = webPhone.userAgent.switchFrom(activeCallItem, {});\n    onAccepted(session);\n  }\n\n  let onConference = false;\n\n  function initConference() {\n    if (!onConference) {\n      getPresenceActiveCalls()\n        .then((res) => res.json())\n        .then((response) => {\n          const partyId = response.activeCalls[0].partyId;\n          const telephonySessionId = response.activeCalls[0].telephonySessionId;\n          getConfVoiceToken().then((voiceToken) => {\n            startConferenceCall(voiceToken, partyId, telephonySessionId);\n            onConference = true;\n          });\n        });\n    } else {\n      alert('A conference is already in progress');\n    }\n  }\n\n  function getPresenceActiveCalls() {\n    return platform.get('/restapi/v1.0/account/~/extension/~/presence?detailedTelephonyState=true');\n  }\n\n  function getConfVoiceToken() {\n    return platform\n      .post('/restapi/v1.0/account/~/telephony/conference', {})\n      .then((res) => res.json())\n      .then((res) => {\n        confSessionId = res.session.id;\n        return res.session.voiceCallToken;\n      });\n  }\n\n  function startConferenceCall(voiceToken, partyId, telephonySessionId) {\n    const session = webPhone.userAgent.invite(voiceToken, {\n      fromNumber: primaryNumber,\n    });\n    session.stateChange.addListener((newState) => {\n      if (newState === SessionState.Established) {\n        onAccepted(session);\n        console.log('Conference call started');\n        bringIn(telephonySessionId, partyId)\n          .then((res) => res.json())\n          .then((response) => {\n            console.log('Adding call to conference succesful', response);\n          })\n          .catch((e) => {\n            console.error('Conference call failed', e.stack || e);\n          });\n      }\n    });\n  }\n\n  function bringIn(telephonySessionId, partyId) {\n    const url = '/restapi/v1.0/account/~/telephony/sessions/' + confSessionId + '/parties/bring-in';\n    return platform.post(url, {\n      telephonySessionId: telephonySessionId,\n      partyId: partyId,\n    });\n  }\n\n  function makeCallForm() {\n    const $form = cloneTemplate($callTemplate);\n\n    const $number = $form.find('input[name=number]').eq(0);\n    const $homeCountry = $form.find('input[name=homeCountry]').eq(0);\n    const $username = $form.find('.username').eq(0);\n    const $logout = $form.find('.logout').eq(0);\n    const $switch = $form.find('.switch').eq(0);\n\n    $username.html(\n      '<dl>' +\n        '<dt>Contact</dt><dd>' +\n        extension.contact.firstName +\n        ' ' +\n        extension.contact.lastName +\n        '</dd>' +\n        '<dt>Company</dt><dd>' +\n        (extension.contact.company || '?') +\n        '</dd>' +\n        '<dt>From Phone Number</dt><dd>' +\n        primaryNumber +\n        '</dd>' +\n        '</dl>',\n    );\n\n    $logout.on('click', (e) => {\n      webPhone.userAgent.unregister();\n      e.preventDefault();\n      location.reload();\n    });\n\n    $switch.on('click', () => {\n      switchCall();\n    });\n\n    $number.val(localStorage.getItem('webPhoneLastNumber') || '');\n\n    $form.on('submit', (e) => {\n      e.preventDefault();\n      e.stopPropagation();\n\n      localStorage.setItem('webPhoneLastNumber', $number.val() || '');\n\n      makeCall($number.val(), $homeCountry.val());\n    });\n\n    $app.empty().append($form);\n  }\n\n  function makeLoginForm() {\n    const $form = cloneTemplate($loginTemplate);\n    const $authForm = cloneTemplate($authFlowTemplate);\n\n    const $server = $authForm.find('input[name=server]').eq(0);\n    const $clientId = $authForm.find('input[name=clientId]').eq(0);\n    const $clientSecret = $authForm.find('input[name=clientSecret]').eq(0);\n    const $jwtToken = $form.find('input[name=jwtToken]').eq(0);\n    const $logLevel = $authForm.find('select[name=logLevel]').eq(0);\n\n    $server.val(localStorage.getItem('webPhoneServer') || SDK.server.sandbox);\n    $clientId.val(localStorage.getItem('webPhoneclientId') || '');\n    $clientSecret.val(localStorage.getItem('webPhoneclientSecret') || '');\n    $jwtToken.val(localStorage.getItem('webPhoneJwtToken') || '');\n    $logLevel.val(localStorage.getItem('webPhoneLogLevel') || logLevel);\n\n    $form.on('submit', (e) => {\n      console.log('Normal Flow');\n\n      e.preventDefault();\n      e.stopPropagation();\n\n      login($server.val(), $clientId.val(), $clientSecret.val(), $jwtToken.val(), $logLevel.val());\n    });\n    //\n    $authForm.on('submit', (e) => {\n      console.log('Authorized Flow');\n\n      e.preventDefault();\n      e.stopPropagation();\n\n      show3LeggedLogin($server.val(), $clientId.val(), $clientSecret.val(), $logLevel.val());\n    });\n\n    $app.empty().append($authForm).append($form);\n  }\n\n  makeLoginForm();\n});\n","/*!\n * jQuery JavaScript Library v3.7.1\n * https://jquery.com/\n *\n * Copyright OpenJS Foundation and other contributors\n * Released under the MIT license\n * https://jquery.org/license\n *\n * Date: 2023-08-28T13:37Z\n */\n( function( global, factory ) {\n\n\t\"use strict\";\n\n\tif ( typeof module === \"object\" && typeof module.exports === \"object\" ) {\n\n\t\t// For CommonJS and CommonJS-like environments where a proper `window`\n\t\t// is present, execute the factory and get jQuery.\n\t\t// For environments that do not have a `window` with a `document`\n\t\t// (such as Node.js), expose a factory as module.exports.\n\t\t// This accentuates the need for the creation of a real `window`.\n\t\t// e.g. var jQuery = require(\"jquery\")(window);\n\t\t// See ticket trac-14549 for more info.\n\t\tmodule.exports = global.document ?\n\t\t\tfactory( global, true ) :\n\t\t\tfunction( w ) {\n\t\t\t\tif ( !w.document ) {\n\t\t\t\t\tthrow new Error( \"jQuery requires a window with a document\" );\n\t\t\t\t}\n\t\t\t\treturn factory( w );\n\t\t\t};\n\t} else {\n\t\tfactory( global );\n\t}\n\n// Pass this if window is not defined yet\n} )( typeof window !== \"undefined\" ? window : this, function( window, noGlobal ) {\n\n// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1\n// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode\n// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common\n// enough that all such attempts are guarded in a try block.\n\"use strict\";\n\nvar arr = [];\n\nvar getProto = Object.getPrototypeOf;\n\nvar slice = arr.slice;\n\nvar flat = arr.flat ? function( array ) {\n\treturn arr.flat.call( array );\n} : function( array ) {\n\treturn arr.concat.apply( [], array );\n};\n\n\nvar push = arr.push;\n\nvar indexOf = arr.indexOf;\n\nvar class2type = {};\n\nvar toString = class2type.toString;\n\nvar hasOwn = class2type.hasOwnProperty;\n\nvar fnToString = hasOwn.toString;\n\nvar ObjectFunctionString = fnToString.call( Object );\n\nvar support = {};\n\nvar isFunction = function isFunction( obj ) {\n\n\t\t// Support: Chrome <=57, Firefox <=52\n\t\t// In some browsers, typeof returns \"function\" for HTML <object> elements\n\t\t// (i.e., `typeof document.createElement( \"object\" ) === \"function\"`).\n\t\t// We don't want to classify *any* DOM node as a function.\n\t\t// Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5\n\t\t// Plus for old WebKit, typeof returns \"function\" for HTML collections\n\t\t// (e.g., `typeof document.getElementsByTagName(\"div\") === \"function\"`). (gh-4756)\n\t\treturn typeof obj === \"function\" && typeof obj.nodeType !== \"number\" &&\n\t\t\ttypeof obj.item !== \"function\";\n\t};\n\n\nvar isWindow = function isWindow( obj ) {\n\t\treturn obj != null && obj === obj.window;\n\t};\n\n\nvar document = window.document;\n\n\n\n\tvar preservedScriptAttributes = {\n\t\ttype: true,\n\t\tsrc: true,\n\t\tnonce: true,\n\t\tnoModule: true\n\t};\n\n\tfunction DOMEval( code, node, doc ) {\n\t\tdoc = doc || document;\n\n\t\tvar i, val,\n\t\t\tscript = doc.createElement( \"script\" );\n\n\t\tscript.text = code;\n\t\tif ( node ) {\n\t\t\tfor ( i in preservedScriptAttributes ) {\n\n\t\t\t\t// Support: Firefox 64+, Edge 18+\n\t\t\t\t// Some browsers don't support the \"nonce\" property on scripts.\n\t\t\t\t// On the other hand, just using `getAttribute` is not enough as\n\t\t\t\t// the `nonce` attribute is reset to an empty string whenever it\n\t\t\t\t// becomes browsing-context connected.\n\t\t\t\t// See https://github.com/whatwg/html/issues/2369\n\t\t\t\t// See https://html.spec.whatwg.org/#nonce-attributes\n\t\t\t\t// The `node.getAttribute` check was added for the sake of\n\t\t\t\t// `jQuery.globalEval` so that it can fake a nonce-containing node\n\t\t\t\t// via an object.\n\t\t\t\tval = node[ i ] || node.getAttribute && node.getAttribute( i );\n\t\t\t\tif ( val ) {\n\t\t\t\t\tscript.setAttribute( i, val );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tdoc.head.appendChild( script ).parentNode.removeChild( script );\n\t}\n\n\nfunction toType( obj ) {\n\tif ( obj == null ) {\n\t\treturn obj + \"\";\n\t}\n\n\t// Support: Android <=2.3 only (functionish RegExp)\n\treturn typeof obj === \"object\" || typeof obj === \"function\" ?\n\t\tclass2type[ toString.call( obj ) ] || \"object\" :\n\t\ttypeof obj;\n}\n/* global Symbol */\n// Defining this global in .eslintrc.json would create a danger of using the global\n// unguarded in another place, it seems safer to define global only for this module\n\n\n\nvar version = \"3.7.1\",\n\n\trhtmlSuffix = /HTML$/i,\n\n\t// Define a local copy of jQuery\n\tjQuery = function( selector, context ) {\n\n\t\t// The jQuery object is actually just the init constructor 'enhanced'\n\t\t// Need init if jQuery is called (just allow error to be thrown if not included)\n\t\treturn new jQuery.fn.init( selector, context );\n\t};\n\njQuery.fn = jQuery.prototype = {\n\n\t// The current version of jQuery being used\n\tjquery: version,\n\n\tconstructor: jQuery,\n\n\t// The default length of a jQuery object is 0\n\tlength: 0,\n\n\ttoArray: function() {\n\t\treturn slice.call( this );\n\t},\n\n\t// Get the Nth element in the matched element set OR\n\t// Get the whole matched element set as a clean array\n\tget: function( num ) {\n\n\t\t// Return all the elements in a clean array\n\t\tif ( num == null ) {\n\t\t\treturn slice.call( this );\n\t\t}\n\n\t\t// Return just the one element from the set\n\t\treturn num < 0 ? this[ num + this.length ] : this[ num ];\n\t},\n\n\t// Take an array of elements and push it onto the stack\n\t// (returning the new matched element set)\n\tpushStack: function( elems ) {\n\n\t\t// Build a new jQuery matched element set\n\t\tvar ret = jQuery.merge( this.constructor(), elems );\n\n\t\t// Add the old object onto the stack (as a reference)\n\t\tret.prevObject = this;\n\n\t\t// Return the newly-formed element set\n\t\treturn ret;\n\t},\n\n\t// Execute a callback for every element in the matched set.\n\teach: function( callback ) {\n\t\treturn jQuery.each( this, callback );\n\t},\n\n\tmap: function( callback ) {\n\t\treturn this.pushStack( jQuery.map( this, function( elem, i ) {\n\t\t\treturn callback.call( elem, i, elem );\n\t\t} ) );\n\t},\n\n\tslice: function() {\n\t\treturn this.pushStack( slice.apply( this, arguments ) );\n\t},\n\n\tfirst: function() {\n\t\treturn this.eq( 0 );\n\t},\n\n\tlast: function() {\n\t\treturn this.eq( -1 );\n\t},\n\n\teven: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn ( i + 1 ) % 2;\n\t\t} ) );\n\t},\n\n\todd: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn i % 2;\n\t\t} ) );\n\t},\n\n\teq: function( i ) {\n\t\tvar len = this.length,\n\t\t\tj = +i + ( i < 0 ? len : 0 );\n\t\treturn this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );\n\t},\n\n\tend: function() {\n\t\treturn this.prevObject || this.constructor();\n\t},\n\n\t// For internal use only.\n\t// Behaves like an Array's method, not like a jQuery method.\n\tpush: push,\n\tsort: arr.sort,\n\tsplice: arr.splice\n};\n\njQuery.extend = jQuery.fn.extend = function() {\n\tvar options, name, src, copy, copyIsArray, clone,\n\t\ttarget = arguments[ 0 ] || {},\n\t\ti = 1,\n\t\tlength = arguments.length,\n\t\tdeep = false;\n\n\t// Handle a deep copy situation\n\tif ( typeof target === \"boolean\" ) {\n\t\tdeep = target;\n\n\t\t// Skip the boolean and the target\n\t\ttarget = arguments[ i ] || {};\n\t\ti++;\n\t}\n\n\t// Handle case when target is a string or something (possible in deep copy)\n\tif ( typeof target !== \"object\" && !isFunction( target ) ) {\n\t\ttarget = {};\n\t}\n\n\t// Extend jQuery itself if only one argument is passed\n\tif ( i === length ) {\n\t\ttarget = this;\n\t\ti--;\n\t}\n\n\tfor ( ; i < length; i++ ) {\n\n\t\t// Only deal with non-null/undefined values\n\t\tif ( ( options = arguments[ i ] ) != null ) {\n\n\t\t\t// Extend the base object\n\t\t\tfor ( name in options ) {\n\t\t\t\tcopy = options[ name ];\n\n\t\t\t\t// Prevent Object.prototype pollution\n\t\t\t\t// Prevent never-ending loop\n\t\t\t\tif ( name === \"__proto__\" || target === copy ) {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\n\t\t\t\t// Recurse if we're merging plain objects or arrays\n\t\t\t\tif ( deep && copy && ( jQuery.isPlainObject( copy ) ||\n\t\t\t\t\t( copyIsArray = Array.isArray( copy ) ) ) ) {\n\t\t\t\t\tsrc = target[ name ];\n\n\t\t\t\t\t// Ensure proper type for the source value\n\t\t\t\t\tif ( copyIsArray && !Array.isArray( src ) ) {\n\t\t\t\t\t\tclone = [];\n\t\t\t\t\t} else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) {\n\t\t\t\t\t\tclone = {};\n\t\t\t\t\t} else {\n\t\t\t\t\t\tclone = src;\n\t\t\t\t\t}\n\t\t\t\t\tcopyIsArray = false;\n\n\t\t\t\t\t// Never move original objects, clone them\n\t\t\t\t\ttarget[ name ] = jQuery.extend( deep, clone, copy );\n\n\t\t\t\t// Don't bring in undefined values\n\t\t\t\t} else if ( copy !== undefined ) {\n\t\t\t\t\ttarget[ name ] = copy;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Return the modified object\n\treturn target;\n};\n\njQuery.extend( {\n\n\t// Unique for each copy of jQuery on the page\n\texpando: \"jQuery\" + ( version + Math.random() ).replace( /\\D/g, \"\" ),\n\n\t// Assume jQuery is ready without the ready module\n\tisReady: true,\n\n\terror: function( msg ) {\n\t\tthrow new Error( msg );\n\t},\n\n\tnoop: function() {},\n\n\tisPlainObject: function( obj ) {\n\t\tvar proto, Ctor;\n\n\t\t// Detect obvious negatives\n\t\t// Use toString instead of jQuery.type to catch host objects\n\t\tif ( !obj || toString.call( obj ) !== \"[object Object]\" ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tproto = getProto( obj );\n\n\t\t// Objects with no prototype (e.g., `Object.create( null )`) are plain\n\t\tif ( !proto ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Objects with prototype are plain iff they were constructed by a global Object function\n\t\tCtor = hasOwn.call( proto, \"constructor\" ) && proto.constructor;\n\t\treturn typeof Ctor === \"function\" && fnToString.call( Ctor ) === ObjectFunctionString;\n\t},\n\n\tisEmptyObject: function( obj ) {\n\t\tvar name;\n\n\t\tfor ( name in obj ) {\n\t\t\treturn false;\n\t\t}\n\t\treturn true;\n\t},\n\n\t// Evaluates a script in a provided context; falls back to the global one\n\t// if not specified.\n\tglobalEval: function( code, options, doc ) {\n\t\tDOMEval( code, { nonce: options && options.nonce }, doc );\n\t},\n\n\teach: function( obj, callback ) {\n\t\tvar length, i = 0;\n\n\t\tif ( isArrayLike( obj ) ) {\n\t\t\tlength = obj.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tfor ( i in obj ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn obj;\n\t},\n\n\n\t// Retrieve the text value of an array of DOM nodes\n\ttext: function( elem ) {\n\t\tvar node,\n\t\t\tret = \"\",\n\t\t\ti = 0,\n\t\t\tnodeType = elem.nodeType;\n\n\t\tif ( !nodeType ) {\n\n\t\t\t// If no nodeType, this is expected to be an array\n\t\t\twhile ( ( node = elem[ i++ ] ) ) {\n\n\t\t\t\t// Do not traverse comment nodes\n\t\t\t\tret += jQuery.text( node );\n\t\t\t}\n\t\t}\n\t\tif ( nodeType === 1 || nodeType === 11 ) {\n\t\t\treturn elem.textContent;\n\t\t}\n\t\tif ( nodeType === 9 ) {\n\t\t\treturn elem.documentElement.textContent;\n\t\t}\n\t\tif ( nodeType === 3 || nodeType === 4 ) {\n\t\t\treturn elem.nodeValue;\n\t\t}\n\n\t\t// Do not include comment or processing instruction nodes\n\n\t\treturn ret;\n\t},\n\n\t// results is for internal usage only\n\tmakeArray: function( arr, results ) {\n\t\tvar ret = results || [];\n\n\t\tif ( arr != null ) {\n\t\t\tif ( isArrayLike( Object( arr ) ) ) {\n\t\t\t\tjQuery.merge( ret,\n\t\t\t\t\ttypeof arr === \"string\" ?\n\t\t\t\t\t\t[ arr ] : arr\n\t\t\t\t);\n\t\t\t} else {\n\t\t\t\tpush.call( ret, arr );\n\t\t\t}\n\t\t}\n\n\t\treturn ret;\n\t},\n\n\tinArray: function( elem, arr, i ) {\n\t\treturn arr == null ? -1 : indexOf.call( arr, elem, i );\n\t},\n\n\tisXMLDoc: function( elem ) {\n\t\tvar namespace = elem && elem.namespaceURI,\n\t\t\tdocElem = elem && ( elem.ownerDocument || elem ).documentElement;\n\n\t\t// Assume HTML when documentElement doesn't yet exist, such as inside\n\t\t// document fragments.\n\t\treturn !rhtmlSuffix.test( namespace || docElem && docElem.nodeName || \"HTML\" );\n\t},\n\n\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t// push.apply(_, arraylike) throws on ancient WebKit\n\tmerge: function( first, second ) {\n\t\tvar len = +second.length,\n\t\t\tj = 0,\n\t\t\ti = first.length;\n\n\t\tfor ( ; j < len; j++ ) {\n\t\t\tfirst[ i++ ] = second[ j ];\n\t\t}\n\n\t\tfirst.length = i;\n\n\t\treturn first;\n\t},\n\n\tgrep: function( elems, callback, invert ) {\n\t\tvar callbackInverse,\n\t\t\tmatches = [],\n\t\t\ti = 0,\n\t\t\tlength = elems.length,\n\t\t\tcallbackExpect = !invert;\n\n\t\t// Go through the array, only saving the items\n\t\t// that pass the validator function\n\t\tfor ( ; i < length; i++ ) {\n\t\t\tcallbackInverse = !callback( elems[ i ], i );\n\t\t\tif ( callbackInverse !== callbackExpect ) {\n\t\t\t\tmatches.push( elems[ i ] );\n\t\t\t}\n\t\t}\n\n\t\treturn matches;\n\t},\n\n\t// arg is for internal usage only\n\tmap: function( elems, callback, arg ) {\n\t\tvar length, value,\n\t\t\ti = 0,\n\t\t\tret = [];\n\n\t\t// Go through the array, translating each of the items to their new values\n\t\tif ( isArrayLike( elems ) ) {\n\t\t\tlength = elems.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Go through every key on the object,\n\t\t} else {\n\t\t\tfor ( i in elems ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Flatten any nested arrays\n\t\treturn flat( ret );\n\t},\n\n\t// A global GUID counter for objects\n\tguid: 1,\n\n\t// jQuery.support is not used in Core but other projects attach their\n\t// properties to it so it needs to exist.\n\tsupport: support\n} );\n\nif ( typeof Symbol === \"function\" ) {\n\tjQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];\n}\n\n// Populate the class2type map\njQuery.each( \"Boolean Number String Function Array Date RegExp Object Error Symbol\".split( \" \" ),\n\tfunction( _i, name ) {\n\t\tclass2type[ \"[object \" + name + \"]\" ] = name.toLowerCase();\n\t} );\n\nfunction isArrayLike( obj ) {\n\n\t// Support: real iOS 8.2 only (not reproducible in simulator)\n\t// `in` check used to prevent JIT error (gh-2145)\n\t// hasOwn isn't used here due to false negatives\n\t// regarding Nodelist length in IE\n\tvar length = !!obj && \"length\" in obj && obj.length,\n\t\ttype = toType( obj );\n\n\tif ( isFunction( obj ) || isWindow( obj ) ) {\n\t\treturn false;\n\t}\n\n\treturn type === \"array\" || length === 0 ||\n\t\ttypeof length === \"number\" && length > 0 && ( length - 1 ) in obj;\n}\n\n\nfunction nodeName( elem, name ) {\n\n\treturn elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n\n}\nvar pop = arr.pop;\n\n\nvar sort = arr.sort;\n\n\nvar splice = arr.splice;\n\n\nvar whitespace = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\";\n\n\nvar rtrimCSS = new RegExp(\n\t\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\",\n\t\"g\"\n);\n\n\n\n\n// Note: an element does not contain itself\njQuery.contains = function( a, b ) {\n\tvar bup = b && b.parentNode;\n\n\treturn a === bup || !!( bup && bup.nodeType === 1 && (\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE doesn't have `contains` on SVG.\n\t\ta.contains ?\n\t\t\ta.contains( bup ) :\n\t\t\ta.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16\n\t) );\n};\n\n\n\n\n// CSS string/identifier serialization\n// https://drafts.csswg.org/cssom/#common-serializing-idioms\nvar rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\x80-\\uFFFF\\w-]/g;\n\nfunction fcssescape( ch, asCodePoint ) {\n\tif ( asCodePoint ) {\n\n\t\t// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n\t\tif ( ch === \"\\0\" ) {\n\t\t\treturn \"\\uFFFD\";\n\t\t}\n\n\t\t// Control characters and (dependent upon position) numbers get escaped as code points\n\t\treturn ch.slice( 0, -1 ) + \"\\\\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + \" \";\n\t}\n\n\t// Other potentially-special ASCII characters get backslash-escaped\n\treturn \"\\\\\" + ch;\n}\n\njQuery.escapeSelector = function( sel ) {\n\treturn ( sel + \"\" ).replace( rcssescape, fcssescape );\n};\n\n\n\n\nvar preferredDoc = document,\n\tpushNative = push;\n\n( function() {\n\nvar i,\n\tExpr,\n\toutermostContext,\n\tsortInput,\n\thasDuplicate,\n\tpush = pushNative,\n\n\t// Local document vars\n\tdocument,\n\tdocumentElement,\n\tdocumentIsHTML,\n\trbuggyQSA,\n\tmatches,\n\n\t// Instance-specific data\n\texpando = jQuery.expando,\n\tdirruns = 0,\n\tdone = 0,\n\tclassCache = createCache(),\n\ttokenCache = createCache(),\n\tcompilerCache = createCache(),\n\tnonnativeSelectorCache = createCache(),\n\tsortOrder = function( a, b ) {\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t}\n\t\treturn 0;\n\t},\n\n\tbooleans = \"checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|\" +\n\t\t\"loop|multiple|open|readonly|required|scoped\",\n\n\t// Regular expressions\n\n\t// https://www.w3.org/TR/css-syntax-3/#ident-token-diagram\n\tidentifier = \"(?:\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\[^\\\\r\\\\n\\\\f]|[\\\\w-]|[^\\0-\\\\x7f])+\",\n\n\t// Attribute selectors: https://www.w3.org/TR/selectors/#attribute-selectors\n\tattributes = \"\\\\[\" + whitespace + \"*(\" + identifier + \")(?:\" + whitespace +\n\n\t\t// Operator (capture 2)\n\t\t\"*([*^$|!~]?=)\" + whitespace +\n\n\t\t// \"Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]\"\n\t\t\"*(?:'((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\"|(\" + identifier + \"))|)\" +\n\t\twhitespace + \"*\\\\]\",\n\n\tpseudos = \":(\" + identifier + \")(?:\\\\((\" +\n\n\t\t// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n\t\t// 1. quoted (capture 3; capture 4 or capture 5)\n\t\t\"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" +\n\n\t\t// 2. simple (capture 6)\n\t\t\"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" +\n\n\t\t// 3. anything else (capture 2)\n\t\t\".*\" +\n\t\t\")\\\\)|)\",\n\n\t// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n\trwhitespace = new RegExp( whitespace + \"+\", \"g\" ),\n\n\trcomma = new RegExp( \"^\" + whitespace + \"*,\" + whitespace + \"*\" ),\n\trleadingCombinator = new RegExp( \"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" +\n\t\twhitespace + \"*\" ),\n\trdescend = new RegExp( whitespace + \"|>\" ),\n\n\trpseudo = new RegExp( pseudos ),\n\tridentifier = new RegExp( \"^\" + identifier + \"$\" ),\n\n\tmatchExpr = {\n\t\tID: new RegExp( \"^#(\" + identifier + \")\" ),\n\t\tCLASS: new RegExp( \"^\\\\.(\" + identifier + \")\" ),\n\t\tTAG: new RegExp( \"^(\" + identifier + \"|[*])\" ),\n\t\tATTR: new RegExp( \"^\" + attributes ),\n\t\tPSEUDO: new RegExp( \"^\" + pseudos ),\n\t\tCHILD: new RegExp(\n\t\t\t\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" +\n\t\t\t\twhitespace + \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" +\n\t\t\t\twhitespace + \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\" ),\n\t\tbool: new RegExp( \"^(?:\" + booleans + \")$\", \"i\" ),\n\n\t\t// For use in libraries implementing .is()\n\t\t// We use this for POS matching in `select`\n\t\tneedsContext: new RegExp( \"^\" + whitespace +\n\t\t\t\"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" + whitespace +\n\t\t\t\"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\" )\n\t},\n\n\trinputs = /^(?:input|select|textarea|button)$/i,\n\trheader = /^h\\d$/i,\n\n\t// Easily-parseable/retrievable ID or TAG or CLASS selectors\n\trquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/,\n\n\trsibling = /[+~]/,\n\n\t// CSS escapes\n\t// https://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n\trunescape = new RegExp( \"\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\([^\\\\r\\\\n\\\\f])\", \"g\" ),\n\tfunescape = function( escape, nonHex ) {\n\t\tvar high = \"0x\" + escape.slice( 1 ) - 0x10000;\n\n\t\tif ( nonHex ) {\n\n\t\t\t// Strip the backslash prefix from a non-hex escape sequence\n\t\t\treturn nonHex;\n\t\t}\n\n\t\t// Replace a hexadecimal escape sequence with the encoded Unicode code point\n\t\t// Support: IE <=11+\n\t\t// For values outside the Basic Multilingual Plane (BMP), manually construct a\n\t\t// surrogate pair\n\t\treturn high < 0 ?\n\t\t\tString.fromCharCode( high + 0x10000 ) :\n\t\t\tString.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );\n\t},\n\n\t// Used for iframes; see `setDocument`.\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Removing the function wrapper causes a \"Permission Denied\"\n\t// error in IE/Edge.\n\tunloadHandler = function() {\n\t\tsetDocument();\n\t},\n\n\tinDisabledFieldset = addCombinator(\n\t\tfunction( elem ) {\n\t\t\treturn elem.disabled === true && nodeName( elem, \"fieldset\" );\n\t\t},\n\t\t{ dir: \"parentNode\", next: \"legend\" }\n\t);\n\n// Support: IE <=9 only\n// Accessing document.activeElement can throw unexpectedly\n// https://bugs.jquery.com/ticket/13393\nfunction safeActiveElement() {\n\ttry {\n\t\treturn document.activeElement;\n\t} catch ( err ) { }\n}\n\n// Optimize for push.apply( _, NodeList )\ntry {\n\tpush.apply(\n\t\t( arr = slice.call( preferredDoc.childNodes ) ),\n\t\tpreferredDoc.childNodes\n\t);\n\n\t// Support: Android <=4.0\n\t// Detect silently failing push.apply\n\t// eslint-disable-next-line no-unused-expressions\n\tarr[ preferredDoc.childNodes.length ].nodeType;\n} catch ( e ) {\n\tpush = {\n\t\tapply: function( target, els ) {\n\t\t\tpushNative.apply( target, slice.call( els ) );\n\t\t},\n\t\tcall: function( target ) {\n\t\t\tpushNative.apply( target, slice.call( arguments, 1 ) );\n\t\t}\n\t};\n}\n\nfunction find( selector, context, results, seed ) {\n\tvar m, i, elem, nid, match, groups, newSelector,\n\t\tnewContext = context && context.ownerDocument,\n\n\t\t// nodeType defaults to 9, since context defaults to document\n\t\tnodeType = context ? context.nodeType : 9;\n\n\tresults = results || [];\n\n\t// Return early from calls with invalid selector or context\n\tif ( typeof selector !== \"string\" || !selector ||\n\t\tnodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {\n\n\t\treturn results;\n\t}\n\n\t// Try to shortcut find operations (as opposed to filters) in HTML documents\n\tif ( !seed ) {\n\t\tsetDocument( context );\n\t\tcontext = context || document;\n\n\t\tif ( documentIsHTML ) {\n\n\t\t\t// If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n\t\t\t// (excepting DocumentFragment context, where the methods don't exist)\n\t\t\tif ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) {\n\n\t\t\t\t// ID selector\n\t\t\t\tif ( ( m = match[ 1 ] ) ) {\n\n\t\t\t\t\t// Document context\n\t\t\t\t\tif ( nodeType === 9 ) {\n\t\t\t\t\t\tif ( ( elem = context.getElementById( m ) ) ) {\n\n\t\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\t\tif ( elem.id === m ) {\n\t\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t// Element context\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\tif ( newContext && ( elem = newContext.getElementById( m ) ) &&\n\t\t\t\t\t\t\tfind.contains( context, elem ) &&\n\t\t\t\t\t\t\telem.id === m ) {\n\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t// Type selector\n\t\t\t\t} else if ( match[ 2 ] ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByTagName( selector ) );\n\t\t\t\t\treturn results;\n\n\t\t\t\t// Class selector\n\t\t\t\t} else if ( ( m = match[ 3 ] ) && context.getElementsByClassName ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByClassName( m ) );\n\t\t\t\t\treturn results;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Take advantage of querySelectorAll\n\t\t\tif ( !nonnativeSelectorCache[ selector + \" \" ] &&\n\t\t\t\t( !rbuggyQSA || !rbuggyQSA.test( selector ) ) ) {\n\n\t\t\t\tnewSelector = selector;\n\t\t\t\tnewContext = context;\n\n\t\t\t\t// qSA considers elements outside a scoping root when evaluating child or\n\t\t\t\t// descendant combinators, which is not what we want.\n\t\t\t\t// In such cases, we work around the behavior by prefixing every selector in the\n\t\t\t\t// list with an ID selector referencing the scope context.\n\t\t\t\t// The technique has to be used as well when a leading combinator is used\n\t\t\t\t// as such selectors are not recognized by querySelectorAll.\n\t\t\t\t// Thanks to Andrew Dupont for this technique.\n\t\t\t\tif ( nodeType === 1 &&\n\t\t\t\t\t( rdescend.test( selector ) || rleadingCombinator.test( selector ) ) ) {\n\n\t\t\t\t\t// Expand context for sibling selectors\n\t\t\t\t\tnewContext = rsibling.test( selector ) && testContext( context.parentNode ) ||\n\t\t\t\t\t\tcontext;\n\n\t\t\t\t\t// We can use :scope instead of the ID hack if the browser\n\t\t\t\t\t// supports it & if we're not changing the context.\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when\n\t\t\t\t\t// strict-comparing two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( newContext != context || !support.scope ) {\n\n\t\t\t\t\t\t// Capture the context ID, setting it first if necessary\n\t\t\t\t\t\tif ( ( nid = context.getAttribute( \"id\" ) ) ) {\n\t\t\t\t\t\t\tnid = jQuery.escapeSelector( nid );\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tcontext.setAttribute( \"id\", ( nid = expando ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prefix every selector in the list\n\t\t\t\t\tgroups = tokenize( selector );\n\t\t\t\t\ti = groups.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tgroups[ i ] = ( nid ? \"#\" + nid : \":scope\" ) + \" \" +\n\t\t\t\t\t\t\ttoSelector( groups[ i ] );\n\t\t\t\t\t}\n\t\t\t\t\tnewSelector = groups.join( \",\" );\n\t\t\t\t}\n\n\t\t\t\ttry {\n\t\t\t\t\tpush.apply( results,\n\t\t\t\t\t\tnewContext.querySelectorAll( newSelector )\n\t\t\t\t\t);\n\t\t\t\t\treturn results;\n\t\t\t\t} catch ( qsaError ) {\n\t\t\t\t\tnonnativeSelectorCache( selector, true );\n\t\t\t\t} finally {\n\t\t\t\t\tif ( nid === expando ) {\n\t\t\t\t\t\tcontext.removeAttribute( \"id\" );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// All others\n\treturn select( selector.replace( rtrimCSS, \"$1\" ), context, results, seed );\n}\n\n/**\n * Create key-value caches of limited size\n * @returns {function(string, object)} Returns the Object data after storing it on itself with\n *\tproperty name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n *\tdeleting the oldest entry\n */\nfunction createCache() {\n\tvar keys = [];\n\n\tfunction cache( key, value ) {\n\n\t\t// Use (key + \" \") to avoid collision with native prototype properties\n\t\t// (see https://github.com/jquery/sizzle/issues/157)\n\t\tif ( keys.push( key + \" \" ) > Expr.cacheLength ) {\n\n\t\t\t// Only keep the most recent entries\n\t\t\tdelete cache[ keys.shift() ];\n\t\t}\n\t\treturn ( cache[ key + \" \" ] = value );\n\t}\n\treturn cache;\n}\n\n/**\n * Mark a function for special use by jQuery selector module\n * @param {Function} fn The function to mark\n */\nfunction markFunction( fn ) {\n\tfn[ expando ] = true;\n\treturn fn;\n}\n\n/**\n * Support testing using an element\n * @param {Function} fn Passed the created element and returns a boolean result\n */\nfunction assert( fn ) {\n\tvar el = document.createElement( \"fieldset\" );\n\n\ttry {\n\t\treturn !!fn( el );\n\t} catch ( e ) {\n\t\treturn false;\n\t} finally {\n\n\t\t// Remove from its parent by default\n\t\tif ( el.parentNode ) {\n\t\t\tel.parentNode.removeChild( el );\n\t\t}\n\n\t\t// release memory in IE\n\t\tel = null;\n\t}\n}\n\n/**\n * Returns a function to use in pseudos for input types\n * @param {String} type\n */\nfunction createInputPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn nodeName( elem, \"input\" ) && elem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for buttons\n * @param {String} type\n */\nfunction createButtonPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn ( nodeName( elem, \"input\" ) || nodeName( elem, \"button\" ) ) &&\n\t\t\telem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for :enabled/:disabled\n * @param {Boolean} disabled true for :disabled; false for :enabled\n */\nfunction createDisabledPseudo( disabled ) {\n\n\t// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n\treturn function( elem ) {\n\n\t\t// Only certain elements can match :enabled or :disabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n\t\tif ( \"form\" in elem ) {\n\n\t\t\t// Check for inherited disabledness on relevant non-disabled elements:\n\t\t\t// * listed form-associated elements in a disabled fieldset\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#category-listed\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n\t\t\t// * option elements in a disabled optgroup\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n\t\t\t// All such elements have a \"form\" property.\n\t\t\tif ( elem.parentNode && elem.disabled === false ) {\n\n\t\t\t\t// Option elements defer to a parent optgroup if present\n\t\t\t\tif ( \"label\" in elem ) {\n\t\t\t\t\tif ( \"label\" in elem.parentNode ) {\n\t\t\t\t\t\treturn elem.parentNode.disabled === disabled;\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn elem.disabled === disabled;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Support: IE 6 - 11+\n\t\t\t\t// Use the isDisabled shortcut property to check for disabled fieldset ancestors\n\t\t\t\treturn elem.isDisabled === disabled ||\n\n\t\t\t\t\t// Where there is no isDisabled, check manually\n\t\t\t\t\telem.isDisabled !== !disabled &&\n\t\t\t\t\t\tinDisabledFieldset( elem ) === disabled;\n\t\t\t}\n\n\t\t\treturn elem.disabled === disabled;\n\n\t\t// Try to winnow out elements that can't be disabled before trusting the disabled property.\n\t\t// Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n\t\t// even exist on them, let alone have a boolean value.\n\t\t} else if ( \"label\" in elem ) {\n\t\t\treturn elem.disabled === disabled;\n\t\t}\n\n\t\t// Remaining elements are neither :enabled nor :disabled\n\t\treturn false;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for positionals\n * @param {Function} fn\n */\nfunction createPositionalPseudo( fn ) {\n\treturn markFunction( function( argument ) {\n\t\targument = +argument;\n\t\treturn markFunction( function( seed, matches ) {\n\t\t\tvar j,\n\t\t\t\tmatchIndexes = fn( [], seed.length, argument ),\n\t\t\t\ti = matchIndexes.length;\n\n\t\t\t// Match elements found at the specified indexes\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( seed[ ( j = matchIndexes[ i ] ) ] ) {\n\t\t\t\t\tseed[ j ] = !( matches[ j ] = seed[ j ] );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t} );\n}\n\n/**\n * Checks a node for validity as a jQuery selector context\n * @param {Element|Object=} context\n * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n */\nfunction testContext( context ) {\n\treturn context && typeof context.getElementsByTagName !== \"undefined\" && context;\n}\n\n/**\n * Sets document-related variables once based on the current document\n * @param {Element|Object} [node] An element or document object to use to set the document\n * @returns {Object} Returns the current document\n */\nfunction setDocument( node ) {\n\tvar subWindow,\n\t\tdoc = node ? node.ownerDocument || node : preferredDoc;\n\n\t// Return early if doc is invalid or already selected\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) {\n\t\treturn document;\n\t}\n\n\t// Update global variables\n\tdocument = doc;\n\tdocumentElement = document.documentElement;\n\tdocumentIsHTML = !jQuery.isXMLDoc( document );\n\n\t// Support: iOS 7 only, IE 9 - 11+\n\t// Older browsers didn't support unprefixed `matches`.\n\tmatches = documentElement.matches ||\n\t\tdocumentElement.webkitMatchesSelector ||\n\t\tdocumentElement.msMatchesSelector;\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Accessing iframe documents after unload throws \"permission denied\" errors\n\t// (see trac-13936).\n\t// Limit the fix to IE & Edge Legacy; despite Edge 15+ implementing `matches`,\n\t// all IE 9+ and Edge Legacy versions implement `msMatchesSelector` as well.\n\tif ( documentElement.msMatchesSelector &&\n\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tpreferredDoc != document &&\n\t\t( subWindow = document.defaultView ) && subWindow.top !== subWindow ) {\n\n\t\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t\tsubWindow.addEventListener( \"unload\", unloadHandler );\n\t}\n\n\t// Support: IE <10\n\t// Check if getElementById returns elements by name\n\t// The broken getElementById methods don't pick up programmatically-set names,\n\t// so use a roundabout getElementsByName test\n\tsupport.getById = assert( function( el ) {\n\t\tdocumentElement.appendChild( el ).id = jQuery.expando;\n\t\treturn !document.getElementsByName ||\n\t\t\t!document.getElementsByName( jQuery.expando ).length;\n\t} );\n\n\t// Support: IE 9 only\n\t// Check to see if it's possible to do matchesSelector\n\t// on a disconnected node.\n\tsupport.disconnectedMatch = assert( function( el ) {\n\t\treturn matches.call( el, \"*\" );\n\t} );\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// IE/Edge don't support the :scope pseudo-class.\n\tsupport.scope = assert( function() {\n\t\treturn document.querySelectorAll( \":scope\" );\n\t} );\n\n\t// Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only\n\t// Make sure the `:has()` argument is parsed unforgivingly.\n\t// We include `*` in the test to detect buggy implementations that are\n\t// _selectively_ forgiving (specifically when the list includes at least\n\t// one valid selector).\n\t// Note that we treat complete lack of support for `:has()` as if it were\n\t// spec-compliant support, which is fine because use of `:has()` in such\n\t// environments will fail in the qSA path and fall back to jQuery traversal\n\t// anyway.\n\tsupport.cssHas = assert( function() {\n\t\ttry {\n\t\t\tdocument.querySelector( \":has(*,:jqfake)\" );\n\t\t\treturn false;\n\t\t} catch ( e ) {\n\t\t\treturn true;\n\t\t}\n\t} );\n\n\t// ID filter and find\n\tif ( support.getById ) {\n\t\tExpr.filter.ID = function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn elem.getAttribute( \"id\" ) === attrId;\n\t\t\t};\n\t\t};\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar elem = context.getElementById( id );\n\t\t\t\treturn elem ? [ elem ] : [];\n\t\t\t}\n\t\t};\n\t} else {\n\t\tExpr.filter.ID =  function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\tvar node = typeof elem.getAttributeNode !== \"undefined\" &&\n\t\t\t\t\telem.getAttributeNode( \"id\" );\n\t\t\t\treturn node && node.value === attrId;\n\t\t\t};\n\t\t};\n\n\t\t// Support: IE 6 - 7 only\n\t\t// getElementById is not reliable as a find shortcut\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar node, i, elems,\n\t\t\t\t\telem = context.getElementById( id );\n\n\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t// Verify the id attribute\n\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t}\n\n\t\t\t\t\t// Fall back on getElementsByName\n\t\t\t\t\telems = context.getElementsByName( id );\n\t\t\t\t\ti = 0;\n\t\t\t\t\twhile ( ( elem = elems[ i++ ] ) ) {\n\t\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn [];\n\t\t\t}\n\t\t};\n\t}\n\n\t// Tag\n\tExpr.find.TAG = function( tag, context ) {\n\t\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\t\treturn context.getElementsByTagName( tag );\n\n\t\t// DocumentFragment nodes don't have gEBTN\n\t\t} else {\n\t\t\treturn context.querySelectorAll( tag );\n\t\t}\n\t};\n\n\t// Class\n\tExpr.find.CLASS = function( className, context ) {\n\t\tif ( typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML ) {\n\t\t\treturn context.getElementsByClassName( className );\n\t\t}\n\t};\n\n\t/* QSA/matchesSelector\n\t---------------------------------------------------------------------- */\n\n\t// QSA and matchesSelector support\n\n\trbuggyQSA = [];\n\n\t// Build QSA regex\n\t// Regex strategy adopted from Diego Perini\n\tassert( function( el ) {\n\n\t\tvar input;\n\n\t\tdocumentElement.appendChild( el ).innerHTML =\n\t\t\t\"<a id='\" + expando + \"' href='' disabled='disabled'></a>\" +\n\t\t\t\"<select id='\" + expando + \"-\\r\\\\' disabled='disabled'>\" +\n\t\t\t\"<option selected=''></option></select>\";\n\n\t\t// Support: iOS <=7 - 8 only\n\t\t// Boolean attributes and \"value\" are not treated correctly in some XML documents\n\t\tif ( !el.querySelectorAll( \"[selected]\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\" );\n\t\t}\n\n\t\t// Support: iOS <=7 - 8 only\n\t\tif ( !el.querySelectorAll( \"[id~=\" + expando + \"-]\" ).length ) {\n\t\t\trbuggyQSA.push( \"~=\" );\n\t\t}\n\n\t\t// Support: iOS 8 only\n\t\t// https://bugs.webkit.org/show_bug.cgi?id=136851\n\t\t// In-page `selector#id sibling-combinator selector` fails\n\t\tif ( !el.querySelectorAll( \"a#\" + expando + \"+*\" ).length ) {\n\t\t\trbuggyQSA.push( \".#.+[+~]\" );\n\t\t}\n\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tif ( !el.querySelectorAll( \":checked\" ).length ) {\n\t\t\trbuggyQSA.push( \":checked\" );\n\t\t}\n\n\t\t// Support: Windows 8 Native Apps\n\t\t// The type and name attributes are restricted during .innerHTML assignment\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"type\", \"hidden\" );\n\t\tel.appendChild( input ).setAttribute( \"name\", \"D\" );\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE's :disabled selector does not pick up the children of disabled fieldsets\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tdocumentElement.appendChild( el ).disabled = true;\n\t\tif ( el.querySelectorAll( \":disabled\" ).length !== 2 ) {\n\t\t\trbuggyQSA.push( \":enabled\", \":disabled\" );\n\t\t}\n\n\t\t// Support: IE 11+, Edge 15 - 18+\n\t\t// IE 11/Edge don't find elements on a `[name='']` query in some cases.\n\t\t// Adding a temporary attribute to the document before the selection works\n\t\t// around the issue.\n\t\t// Interestingly, IE 10 & older don't seem to have the issue.\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"name\", \"\" );\n\t\tel.appendChild( input );\n\t\tif ( !el.querySelectorAll( \"[name='']\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*name\" + whitespace + \"*=\" +\n\t\t\t\twhitespace + \"*(?:''|\\\"\\\")\" );\n\t\t}\n\t} );\n\n\tif ( !support.cssHas ) {\n\n\t\t// Support: Chrome 105 - 110+, Safari 15.4 - 16.3+\n\t\t// Our regular `try-catch` mechanism fails to detect natively-unsupported\n\t\t// pseudo-classes inside `:has()` (such as `:has(:contains(\"Foo\"))`)\n\t\t// in browsers that parse the `:has()` argument as a forgiving selector list.\n\t\t// https://drafts.csswg.org/selectors/#relational now requires the argument\n\t\t// to be parsed unforgivingly, but browsers have not yet fully adjusted.\n\t\trbuggyQSA.push( \":has\" );\n\t}\n\n\trbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( \"|\" ) );\n\n\t/* Sorting\n\t---------------------------------------------------------------------- */\n\n\t// Document order sorting\n\tsortOrder = function( a, b ) {\n\n\t\t// Flag for duplicate removal\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t\treturn 0;\n\t\t}\n\n\t\t// Sort on method existence if only one input has compareDocumentPosition\n\t\tvar compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n\t\tif ( compare ) {\n\t\t\treturn compare;\n\t\t}\n\n\t\t// Calculate position if both inputs belong to the same document\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tcompare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ?\n\t\t\ta.compareDocumentPosition( b ) :\n\n\t\t\t// Otherwise we know they are disconnected\n\t\t\t1;\n\n\t\t// Disconnected nodes\n\t\tif ( compare & 1 ||\n\t\t\t( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) {\n\n\t\t\t// Choose the first element that is related to our preferred document\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( a === document || a.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, a ) ) {\n\t\t\t\treturn -1;\n\t\t\t}\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( b === document || b.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, b ) ) {\n\t\t\t\treturn 1;\n\t\t\t}\n\n\t\t\t// Maintain original order\n\t\t\treturn sortInput ?\n\t\t\t\t( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :\n\t\t\t\t0;\n\t\t}\n\n\t\treturn compare & 4 ? -1 : 1;\n\t};\n\n\treturn document;\n}\n\nfind.matches = function( expr, elements ) {\n\treturn find( expr, null, null, elements );\n};\n\nfind.matchesSelector = function( elem, expr ) {\n\tsetDocument( elem );\n\n\tif ( documentIsHTML &&\n\t\t!nonnativeSelectorCache[ expr + \" \" ] &&\n\t\t( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) {\n\n\t\ttry {\n\t\t\tvar ret = matches.call( elem, expr );\n\n\t\t\t// IE 9's matchesSelector returns false on disconnected nodes\n\t\t\tif ( ret || support.disconnectedMatch ||\n\n\t\t\t\t\t// As well, disconnected nodes are said to be in a document\n\t\t\t\t\t// fragment in IE 9\n\t\t\t\t\telem.document && elem.document.nodeType !== 11 ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\t\t} catch ( e ) {\n\t\t\tnonnativeSelectorCache( expr, true );\n\t\t}\n\t}\n\n\treturn find( expr, document, null, [ elem ] ).length > 0;\n};\n\nfind.contains = function( context, elem ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( context.ownerDocument || context ) != document ) {\n\t\tsetDocument( context );\n\t}\n\treturn jQuery.contains( context, elem );\n};\n\n\nfind.attr = function( elem, name ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( elem.ownerDocument || elem ) != document ) {\n\t\tsetDocument( elem );\n\t}\n\n\tvar fn = Expr.attrHandle[ name.toLowerCase() ],\n\n\t\t// Don't get fooled by Object.prototype properties (see trac-13807)\n\t\tval = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?\n\t\t\tfn( elem, name, !documentIsHTML ) :\n\t\t\tundefined;\n\n\tif ( val !== undefined ) {\n\t\treturn val;\n\t}\n\n\treturn elem.getAttribute( name );\n};\n\nfind.error = function( msg ) {\n\tthrow new Error( \"Syntax error, unrecognized expression: \" + msg );\n};\n\n/**\n * Document sorting and removing duplicates\n * @param {ArrayLike} results\n */\njQuery.uniqueSort = function( results ) {\n\tvar elem,\n\t\tduplicates = [],\n\t\tj = 0,\n\t\ti = 0;\n\n\t// Unless we *know* we can detect duplicates, assume their presence\n\t//\n\t// Support: Android <=4.0+\n\t// Testing for detecting duplicates is unpredictable so instead assume we can't\n\t// depend on duplicate detection in all browsers without a stable sort.\n\thasDuplicate = !support.sortStable;\n\tsortInput = !support.sortStable && slice.call( results, 0 );\n\tsort.call( results, sortOrder );\n\n\tif ( hasDuplicate ) {\n\t\twhile ( ( elem = results[ i++ ] ) ) {\n\t\t\tif ( elem === results[ i ] ) {\n\t\t\t\tj = duplicates.push( i );\n\t\t\t}\n\t\t}\n\t\twhile ( j-- ) {\n\t\t\tsplice.call( results, duplicates[ j ], 1 );\n\t\t}\n\t}\n\n\t// Clear input after sorting to release objects\n\t// See https://github.com/jquery/sizzle/pull/225\n\tsortInput = null;\n\n\treturn results;\n};\n\njQuery.fn.uniqueSort = function() {\n\treturn this.pushStack( jQuery.uniqueSort( slice.apply( this ) ) );\n};\n\nExpr = jQuery.expr = {\n\n\t// Can be adjusted by the user\n\tcacheLength: 50,\n\n\tcreatePseudo: markFunction,\n\n\tmatch: matchExpr,\n\n\tattrHandle: {},\n\n\tfind: {},\n\n\trelative: {\n\t\t\">\": { dir: \"parentNode\", first: true },\n\t\t\" \": { dir: \"parentNode\" },\n\t\t\"+\": { dir: \"previousSibling\", first: true },\n\t\t\"~\": { dir: \"previousSibling\" }\n\t},\n\n\tpreFilter: {\n\t\tATTR: function( match ) {\n\t\t\tmatch[ 1 ] = match[ 1 ].replace( runescape, funescape );\n\n\t\t\t// Move the given value to match[3] whether quoted or unquoted\n\t\t\tmatch[ 3 ] = ( match[ 3 ] || match[ 4 ] || match[ 5 ] || \"\" )\n\t\t\t\t.replace( runescape, funescape );\n\n\t\t\tif ( match[ 2 ] === \"~=\" ) {\n\t\t\t\tmatch[ 3 ] = \" \" + match[ 3 ] + \" \";\n\t\t\t}\n\n\t\t\treturn match.slice( 0, 4 );\n\t\t},\n\n\t\tCHILD: function( match ) {\n\n\t\t\t/* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/\n\t\t\tmatch[ 1 ] = match[ 1 ].toLowerCase();\n\n\t\t\tif ( match[ 1 ].slice( 0, 3 ) === \"nth\" ) {\n\n\t\t\t\t// nth-* requires argument\n\t\t\t\tif ( !match[ 3 ] ) {\n\t\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t\t}\n\n\t\t\t\t// numeric x and y parameters for Expr.filter.CHILD\n\t\t\t\t// remember that false/true cast respectively to 0/1\n\t\t\t\tmatch[ 4 ] = +( match[ 4 ] ?\n\t\t\t\t\tmatch[ 5 ] + ( match[ 6 ] || 1 ) :\n\t\t\t\t\t2 * ( match[ 3 ] === \"even\" || match[ 3 ] === \"odd\" )\n\t\t\t\t);\n\t\t\t\tmatch[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === \"odd\" );\n\n\t\t\t// other types prohibit arguments\n\t\t\t} else if ( match[ 3 ] ) {\n\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t}\n\n\t\t\treturn match;\n\t\t},\n\n\t\tPSEUDO: function( match ) {\n\t\t\tvar excess,\n\t\t\t\tunquoted = !match[ 6 ] && match[ 2 ];\n\n\t\t\tif ( matchExpr.CHILD.test( match[ 0 ] ) ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// Accept quoted arguments as-is\n\t\t\tif ( match[ 3 ] ) {\n\t\t\t\tmatch[ 2 ] = match[ 4 ] || match[ 5 ] || \"\";\n\n\t\t\t// Strip excess characters from unquoted arguments\n\t\t\t} else if ( unquoted && rpseudo.test( unquoted ) &&\n\n\t\t\t\t// Get excess from tokenize (recursively)\n\t\t\t\t( excess = tokenize( unquoted, true ) ) &&\n\n\t\t\t\t// advance to the next closing parenthesis\n\t\t\t\t( excess = unquoted.indexOf( \")\", unquoted.length - excess ) - unquoted.length ) ) {\n\n\t\t\t\t// excess is a negative index\n\t\t\t\tmatch[ 0 ] = match[ 0 ].slice( 0, excess );\n\t\t\t\tmatch[ 2 ] = unquoted.slice( 0, excess );\n\t\t\t}\n\n\t\t\t// Return only captures needed by the pseudo filter method (type and argument)\n\t\t\treturn match.slice( 0, 3 );\n\t\t}\n\t},\n\n\tfilter: {\n\n\t\tTAG: function( nodeNameSelector ) {\n\t\t\tvar expectedNodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn nodeNameSelector === \"*\" ?\n\t\t\t\tfunction() {\n\t\t\t\t\treturn true;\n\t\t\t\t} :\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn nodeName( elem, expectedNodeName );\n\t\t\t\t};\n\t\t},\n\n\t\tCLASS: function( className ) {\n\t\t\tvar pattern = classCache[ className + \" \" ];\n\n\t\t\treturn pattern ||\n\t\t\t\t( pattern = new RegExp( \"(^|\" + whitespace + \")\" + className +\n\t\t\t\t\t\"(\" + whitespace + \"|$)\" ) ) &&\n\t\t\t\tclassCache( className, function( elem ) {\n\t\t\t\t\treturn pattern.test(\n\t\t\t\t\t\ttypeof elem.className === \"string\" && elem.className ||\n\t\t\t\t\t\t\ttypeof elem.getAttribute !== \"undefined\" &&\n\t\t\t\t\t\t\t\telem.getAttribute( \"class\" ) ||\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t);\n\t\t\t\t} );\n\t\t},\n\n\t\tATTR: function( name, operator, check ) {\n\t\t\treturn function( elem ) {\n\t\t\t\tvar result = find.attr( elem, name );\n\n\t\t\t\tif ( result == null ) {\n\t\t\t\t\treturn operator === \"!=\";\n\t\t\t\t}\n\t\t\t\tif ( !operator ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\tresult += \"\";\n\n\t\t\t\tif ( operator === \"=\" ) {\n\t\t\t\t\treturn result === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"!=\" ) {\n\t\t\t\t\treturn result !== check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"^=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) === 0;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"*=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"$=\" ) {\n\t\t\t\t\treturn check && result.slice( -check.length ) === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"~=\" ) {\n\t\t\t\t\treturn ( \" \" + result.replace( rwhitespace, \" \" ) + \" \" )\n\t\t\t\t\t\t.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"|=\" ) {\n\t\t\t\t\treturn result === check || result.slice( 0, check.length + 1 ) === check + \"-\";\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\t\t\t};\n\t\t},\n\n\t\tCHILD: function( type, what, _argument, first, last ) {\n\t\t\tvar simple = type.slice( 0, 3 ) !== \"nth\",\n\t\t\t\tforward = type.slice( -4 ) !== \"last\",\n\t\t\t\tofType = what === \"of-type\";\n\n\t\t\treturn first === 1 && last === 0 ?\n\n\t\t\t\t// Shortcut for :nth-*(n)\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn !!elem.parentNode;\n\t\t\t\t} :\n\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tvar cache, outerCache, node, nodeIndex, start,\n\t\t\t\t\t\tdir = simple !== forward ? \"nextSibling\" : \"previousSibling\",\n\t\t\t\t\t\tparent = elem.parentNode,\n\t\t\t\t\t\tname = ofType && elem.nodeName.toLowerCase(),\n\t\t\t\t\t\tuseCache = !xml && !ofType,\n\t\t\t\t\t\tdiff = false;\n\n\t\t\t\t\tif ( parent ) {\n\n\t\t\t\t\t\t// :(first|last|only)-(child|of-type)\n\t\t\t\t\t\tif ( simple ) {\n\t\t\t\t\t\t\twhile ( dir ) {\n\t\t\t\t\t\t\t\tnode = elem;\n\t\t\t\t\t\t\t\twhile ( ( node = node[ dir ] ) ) {\n\t\t\t\t\t\t\t\t\tif ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) {\n\n\t\t\t\t\t\t\t\t\t\treturn false;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t// Reverse direction for :only-* (if we haven't yet done so)\n\t\t\t\t\t\t\t\tstart = dir = type === \"only\" && !start && \"nextSibling\";\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tstart = [ forward ? parent.firstChild : parent.lastChild ];\n\n\t\t\t\t\t\t// non-xml :nth-child(...) stores cache data on `parent`\n\t\t\t\t\t\tif ( forward && useCache ) {\n\n\t\t\t\t\t\t\t// Seek `elem` from a previously-cached index\n\t\t\t\t\t\t\touterCache = parent[ expando ] || ( parent[ expando ] = {} );\n\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\tdiff = nodeIndex && cache[ 2 ];\n\t\t\t\t\t\t\tnode = nodeIndex && parent.childNodes[ nodeIndex ];\n\n\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\n\t\t\t\t\t\t\t\t// Fallback to seeking `elem` from the start\n\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t// When found, cache indexes on `parent` and break\n\t\t\t\t\t\t\t\tif ( node.nodeType === 1 && ++diff && node === elem ) {\n\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, nodeIndex, diff ];\n\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Use previously-cached element index if available\n\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\t\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\t\tdiff = nodeIndex;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// xml :nth-child(...)\n\t\t\t\t\t\t\t// or :nth-last-child(...) or :nth(-last)?-of-type(...)\n\t\t\t\t\t\t\tif ( diff === false ) {\n\n\t\t\t\t\t\t\t\t// Use the same loop as above to seek `elem` from the start\n\t\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\t\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t\tif ( ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) &&\n\t\t\t\t\t\t\t\t\t\t++diff ) {\n\n\t\t\t\t\t\t\t\t\t\t// Cache the index of each encountered element\n\t\t\t\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\t\t\t\touterCache = node[ expando ] ||\n\t\t\t\t\t\t\t\t\t\t\t\t( node[ expando ] = {} );\n\t\t\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, diff ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\tif ( node === elem ) {\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Incorporate the offset, then check against cycle size\n\t\t\t\t\t\tdiff -= last;\n\t\t\t\t\t\treturn diff === first || ( diff % first === 0 && diff / first >= 0 );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t},\n\n\t\tPSEUDO: function( pseudo, argument ) {\n\n\t\t\t// pseudo-class names are case-insensitive\n\t\t\t// https://www.w3.org/TR/selectors/#pseudo-classes\n\t\t\t// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n\t\t\t// Remember that setFilters inherits from pseudos\n\t\t\tvar args,\n\t\t\t\tfn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||\n\t\t\t\t\tfind.error( \"unsupported pseudo: \" + pseudo );\n\n\t\t\t// The user may use createPseudo to indicate that\n\t\t\t// arguments are needed to create the filter function\n\t\t\t// just as jQuery does\n\t\t\tif ( fn[ expando ] ) {\n\t\t\t\treturn fn( argument );\n\t\t\t}\n\n\t\t\t// But maintain support for old signatures\n\t\t\tif ( fn.length > 1 ) {\n\t\t\t\targs = [ pseudo, pseudo, \"\", argument ];\n\t\t\t\treturn Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?\n\t\t\t\t\tmarkFunction( function( seed, matches ) {\n\t\t\t\t\t\tvar idx,\n\t\t\t\t\t\t\tmatched = fn( seed, argument ),\n\t\t\t\t\t\t\ti = matched.length;\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tidx = indexOf.call( seed, matched[ i ] );\n\t\t\t\t\t\t\tseed[ idx ] = !( matches[ idx ] = matched[ i ] );\n\t\t\t\t\t\t}\n\t\t\t\t\t} ) :\n\t\t\t\t\tfunction( elem ) {\n\t\t\t\t\t\treturn fn( elem, 0, args );\n\t\t\t\t\t};\n\t\t\t}\n\n\t\t\treturn fn;\n\t\t}\n\t},\n\n\tpseudos: {\n\n\t\t// Potentially complex pseudos\n\t\tnot: markFunction( function( selector ) {\n\n\t\t\t// Trim the selector passed to compile\n\t\t\t// to avoid treating leading and trailing\n\t\t\t// spaces as combinators\n\t\t\tvar input = [],\n\t\t\t\tresults = [],\n\t\t\t\tmatcher = compile( selector.replace( rtrimCSS, \"$1\" ) );\n\n\t\t\treturn matcher[ expando ] ?\n\t\t\t\tmarkFunction( function( seed, matches, _context, xml ) {\n\t\t\t\t\tvar elem,\n\t\t\t\t\t\tunmatched = matcher( seed, null, xml, [] ),\n\t\t\t\t\t\ti = seed.length;\n\n\t\t\t\t\t// Match elements unmatched by `matcher`\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\t\t\t\t\tseed[ i ] = !( matches[ i ] = elem );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} ) :\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tinput[ 0 ] = elem;\n\t\t\t\t\tmatcher( input, null, xml, results );\n\n\t\t\t\t\t// Don't keep the element\n\t\t\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\t\t\tinput[ 0 ] = null;\n\t\t\t\t\treturn !results.pop();\n\t\t\t\t};\n\t\t} ),\n\n\t\thas: markFunction( function( selector ) {\n\t\t\treturn function( elem ) {\n\t\t\t\treturn find( selector, elem ).length > 0;\n\t\t\t};\n\t\t} ),\n\n\t\tcontains: markFunction( function( text ) {\n\t\t\ttext = text.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn ( elem.textContent || jQuery.text( elem ) ).indexOf( text ) > -1;\n\t\t\t};\n\t\t} ),\n\n\t\t// \"Whether an element is represented by a :lang() selector\n\t\t// is based solely on the element's language value\n\t\t// being equal to the identifier C,\n\t\t// or beginning with the identifier C immediately followed by \"-\".\n\t\t// The matching of C against the element's language value is performed case-insensitively.\n\t\t// The identifier C does not have to be a valid language name.\"\n\t\t// https://www.w3.org/TR/selectors/#lang-pseudo\n\t\tlang: markFunction( function( lang ) {\n\n\t\t\t// lang value must be a valid identifier\n\t\t\tif ( !ridentifier.test( lang || \"\" ) ) {\n\t\t\t\tfind.error( \"unsupported lang: \" + lang );\n\t\t\t}\n\t\t\tlang = lang.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn function( elem ) {\n\t\t\t\tvar elemLang;\n\t\t\t\tdo {\n\t\t\t\t\tif ( ( elemLang = documentIsHTML ?\n\t\t\t\t\t\telem.lang :\n\t\t\t\t\t\telem.getAttribute( \"xml:lang\" ) || elem.getAttribute( \"lang\" ) ) ) {\n\n\t\t\t\t\t\telemLang = elemLang.toLowerCase();\n\t\t\t\t\t\treturn elemLang === lang || elemLang.indexOf( lang + \"-\" ) === 0;\n\t\t\t\t\t}\n\t\t\t\t} while ( ( elem = elem.parentNode ) && elem.nodeType === 1 );\n\t\t\t\treturn false;\n\t\t\t};\n\t\t} ),\n\n\t\t// Miscellaneous\n\t\ttarget: function( elem ) {\n\t\t\tvar hash = window.location && window.location.hash;\n\t\t\treturn hash && hash.slice( 1 ) === elem.id;\n\t\t},\n\n\t\troot: function( elem ) {\n\t\t\treturn elem === documentElement;\n\t\t},\n\n\t\tfocus: function( elem ) {\n\t\t\treturn elem === safeActiveElement() &&\n\t\t\t\tdocument.hasFocus() &&\n\t\t\t\t!!( elem.type || elem.href || ~elem.tabIndex );\n\t\t},\n\n\t\t// Boolean properties\n\t\tenabled: createDisabledPseudo( false ),\n\t\tdisabled: createDisabledPseudo( true ),\n\n\t\tchecked: function( elem ) {\n\n\t\t\t// In CSS3, :checked should return both checked and selected elements\n\t\t\t// https://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n\t\t\treturn ( nodeName( elem, \"input\" ) && !!elem.checked ) ||\n\t\t\t\t( nodeName( elem, \"option\" ) && !!elem.selected );\n\t\t},\n\n\t\tselected: function( elem ) {\n\n\t\t\t// Support: IE <=11+\n\t\t\t// Accessing the selectedIndex property\n\t\t\t// forces the browser to treat the default option as\n\t\t\t// selected when in an optgroup.\n\t\t\tif ( elem.parentNode ) {\n\t\t\t\t// eslint-disable-next-line no-unused-expressions\n\t\t\t\telem.parentNode.selectedIndex;\n\t\t\t}\n\n\t\t\treturn elem.selected === true;\n\t\t},\n\n\t\t// Contents\n\t\tempty: function( elem ) {\n\n\t\t\t// https://www.w3.org/TR/selectors/#empty-pseudo\n\t\t\t// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n\t\t\t//   but not by others (comment: 8; processing instruction: 7; etc.)\n\t\t\t// nodeType < 6 works because attributes (2) do not appear as children\n\t\t\tfor ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {\n\t\t\t\tif ( elem.nodeType < 6 ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t},\n\n\t\tparent: function( elem ) {\n\t\t\treturn !Expr.pseudos.empty( elem );\n\t\t},\n\n\t\t// Element/input types\n\t\theader: function( elem ) {\n\t\t\treturn rheader.test( elem.nodeName );\n\t\t},\n\n\t\tinput: function( elem ) {\n\t\t\treturn rinputs.test( elem.nodeName );\n\t\t},\n\n\t\tbutton: function( elem ) {\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"button\" ||\n\t\t\t\tnodeName( elem, \"button\" );\n\t\t},\n\n\t\ttext: function( elem ) {\n\t\t\tvar attr;\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"text\" &&\n\n\t\t\t\t// Support: IE <10 only\n\t\t\t\t// New HTML5 attribute values (e.g., \"search\") appear\n\t\t\t\t// with elem.type === \"text\"\n\t\t\t\t( ( attr = elem.getAttribute( \"type\" ) ) == null ||\n\t\t\t\t\tattr.toLowerCase() === \"text\" );\n\t\t},\n\n\t\t// Position-in-collection\n\t\tfirst: createPositionalPseudo( function() {\n\t\t\treturn [ 0 ];\n\t\t} ),\n\n\t\tlast: createPositionalPseudo( function( _matchIndexes, length ) {\n\t\t\treturn [ length - 1 ];\n\t\t} ),\n\n\t\teq: createPositionalPseudo( function( _matchIndexes, length, argument ) {\n\t\t\treturn [ argument < 0 ? argument + length : argument ];\n\t\t} ),\n\n\t\teven: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\todd: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 1;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tlt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i;\n\n\t\t\tif ( argument < 0 ) {\n\t\t\t\ti = argument + length;\n\t\t\t} else if ( argument > length ) {\n\t\t\t\ti = length;\n\t\t\t} else {\n\t\t\t\ti = argument;\n\t\t\t}\n\n\t\t\tfor ( ; --i >= 0; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tgt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i = argument < 0 ? argument + length : argument;\n\t\t\tfor ( ; ++i < length; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} )\n\t}\n};\n\nExpr.pseudos.nth = Expr.pseudos.eq;\n\n// Add button/input type pseudos\nfor ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {\n\tExpr.pseudos[ i ] = createInputPseudo( i );\n}\nfor ( i in { submit: true, reset: true } ) {\n\tExpr.pseudos[ i ] = createButtonPseudo( i );\n}\n\n// Easy API for creating new setFilters\nfunction setFilters() {}\nsetFilters.prototype = Expr.filters = Expr.pseudos;\nExpr.setFilters = new setFilters();\n\nfunction tokenize( selector, parseOnly ) {\n\tvar matched, match, tokens, type,\n\t\tsoFar, groups, preFilters,\n\t\tcached = tokenCache[ selector + \" \" ];\n\n\tif ( cached ) {\n\t\treturn parseOnly ? 0 : cached.slice( 0 );\n\t}\n\n\tsoFar = selector;\n\tgroups = [];\n\tpreFilters = Expr.preFilter;\n\n\twhile ( soFar ) {\n\n\t\t// Comma and first run\n\t\tif ( !matched || ( match = rcomma.exec( soFar ) ) ) {\n\t\t\tif ( match ) {\n\n\t\t\t\t// Don't consume trailing commas as valid\n\t\t\t\tsoFar = soFar.slice( match[ 0 ].length ) || soFar;\n\t\t\t}\n\t\t\tgroups.push( ( tokens = [] ) );\n\t\t}\n\n\t\tmatched = false;\n\n\t\t// Combinators\n\t\tif ( ( match = rleadingCombinator.exec( soFar ) ) ) {\n\t\t\tmatched = match.shift();\n\t\t\ttokens.push( {\n\t\t\t\tvalue: matched,\n\n\t\t\t\t// Cast descendant combinators to space\n\t\t\t\ttype: match[ 0 ].replace( rtrimCSS, \" \" )\n\t\t\t} );\n\t\t\tsoFar = soFar.slice( matched.length );\n\t\t}\n\n\t\t// Filters\n\t\tfor ( type in Expr.filter ) {\n\t\t\tif ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] ||\n\t\t\t\t( match = preFilters[ type ]( match ) ) ) ) {\n\t\t\t\tmatched = match.shift();\n\t\t\t\ttokens.push( {\n\t\t\t\t\tvalue: matched,\n\t\t\t\t\ttype: type,\n\t\t\t\t\tmatches: match\n\t\t\t\t} );\n\t\t\t\tsoFar = soFar.slice( matched.length );\n\t\t\t}\n\t\t}\n\n\t\tif ( !matched ) {\n\t\t\tbreak;\n\t\t}\n\t}\n\n\t// Return the length of the invalid excess\n\t// if we're just parsing\n\t// Otherwise, throw an error or return tokens\n\tif ( parseOnly ) {\n\t\treturn soFar.length;\n\t}\n\n\treturn soFar ?\n\t\tfind.error( selector ) :\n\n\t\t// Cache the tokens\n\t\ttokenCache( selector, groups ).slice( 0 );\n}\n\nfunction toSelector( tokens ) {\n\tvar i = 0,\n\t\tlen = tokens.length,\n\t\tselector = \"\";\n\tfor ( ; i < len; i++ ) {\n\t\tselector += tokens[ i ].value;\n\t}\n\treturn selector;\n}\n\nfunction addCombinator( matcher, combinator, base ) {\n\tvar dir = combinator.dir,\n\t\tskip = combinator.next,\n\t\tkey = skip || dir,\n\t\tcheckNonElements = base && key === \"parentNode\",\n\t\tdoneName = done++;\n\n\treturn combinator.first ?\n\n\t\t// Check against closest ancestor/preceding element\n\t\tfunction( elem, context, xml ) {\n\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\treturn matcher( elem, context, xml );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t} :\n\n\t\t// Check against all ancestor/preceding elements\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar oldCache, outerCache,\n\t\t\t\tnewCache = [ dirruns, doneName ];\n\n\t\t\t// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n\t\t\tif ( xml ) {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\tif ( matcher( elem, context, xml ) ) {\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\n\t\t\t\t\t\tif ( skip && nodeName( elem, skip ) ) {\n\t\t\t\t\t\t\telem = elem[ dir ] || elem;\n\t\t\t\t\t\t} else if ( ( oldCache = outerCache[ key ] ) &&\n\t\t\t\t\t\t\toldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {\n\n\t\t\t\t\t\t\t// Assign to newCache so results back-propagate to previous elements\n\t\t\t\t\t\t\treturn ( newCache[ 2 ] = oldCache[ 2 ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Reuse newcache so results back-propagate to previous elements\n\t\t\t\t\t\t\touterCache[ key ] = newCache;\n\n\t\t\t\t\t\t\t// A match means we're done; a fail means we have to keep checking\n\t\t\t\t\t\t\tif ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) {\n\t\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t};\n}\n\nfunction elementMatcher( matchers ) {\n\treturn matchers.length > 1 ?\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar i = matchers.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( !matchers[ i ]( elem, context, xml ) ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t} :\n\t\tmatchers[ 0 ];\n}\n\nfunction multipleContexts( selector, contexts, results ) {\n\tvar i = 0,\n\t\tlen = contexts.length;\n\tfor ( ; i < len; i++ ) {\n\t\tfind( selector, contexts[ i ], results );\n\t}\n\treturn results;\n}\n\nfunction condense( unmatched, map, filter, context, xml ) {\n\tvar elem,\n\t\tnewUnmatched = [],\n\t\ti = 0,\n\t\tlen = unmatched.length,\n\t\tmapped = map != null;\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\tif ( !filter || filter( elem, context, xml ) ) {\n\t\t\t\tnewUnmatched.push( elem );\n\t\t\t\tif ( mapped ) {\n\t\t\t\t\tmap.push( i );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn newUnmatched;\n}\n\nfunction setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {\n\tif ( postFilter && !postFilter[ expando ] ) {\n\t\tpostFilter = setMatcher( postFilter );\n\t}\n\tif ( postFinder && !postFinder[ expando ] ) {\n\t\tpostFinder = setMatcher( postFinder, postSelector );\n\t}\n\treturn markFunction( function( seed, results, context, xml ) {\n\t\tvar temp, i, elem, matcherOut,\n\t\t\tpreMap = [],\n\t\t\tpostMap = [],\n\t\t\tpreexisting = results.length,\n\n\t\t\t// Get initial elements from seed or context\n\t\t\telems = seed ||\n\t\t\t\tmultipleContexts( selector || \"*\",\n\t\t\t\t\tcontext.nodeType ? [ context ] : context, [] ),\n\n\t\t\t// Prefilter to get matcher input, preserving a map for seed-results synchronization\n\t\t\tmatcherIn = preFilter && ( seed || !selector ) ?\n\t\t\t\tcondense( elems, preMap, preFilter, context, xml ) :\n\t\t\t\telems;\n\n\t\tif ( matcher ) {\n\n\t\t\t// If we have a postFinder, or filtered seed, or non-seed postFilter\n\t\t\t// or preexisting results,\n\t\t\tmatcherOut = postFinder || ( seed ? preFilter : preexisting || postFilter ) ?\n\n\t\t\t\t// ...intermediate processing is necessary\n\t\t\t\t[] :\n\n\t\t\t\t// ...otherwise use results directly\n\t\t\t\tresults;\n\n\t\t\t// Find primary matches\n\t\t\tmatcher( matcherIn, matcherOut, context, xml );\n\t\t} else {\n\t\t\tmatcherOut = matcherIn;\n\t\t}\n\n\t\t// Apply postFilter\n\t\tif ( postFilter ) {\n\t\t\ttemp = condense( matcherOut, postMap );\n\t\t\tpostFilter( temp, [], context, xml );\n\n\t\t\t// Un-match failing elements by moving them back to matcherIn\n\t\t\ti = temp.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( ( elem = temp[ i ] ) ) {\n\t\t\t\t\tmatcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif ( seed ) {\n\t\t\tif ( postFinder || preFilter ) {\n\t\t\t\tif ( postFinder ) {\n\n\t\t\t\t\t// Get the final matcherOut by condensing this intermediate into postFinder contexts\n\t\t\t\t\ttemp = [];\n\t\t\t\t\ti = matcherOut.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) ) {\n\n\t\t\t\t\t\t\t// Restore matcherIn since elem is not yet a final match\n\t\t\t\t\t\t\ttemp.push( ( matcherIn[ i ] = elem ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tpostFinder( null, ( matcherOut = [] ), temp, xml );\n\t\t\t\t}\n\n\t\t\t\t// Move matched elements from seed to results to keep them synchronized\n\t\t\t\ti = matcherOut.length;\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) &&\n\t\t\t\t\t\t( temp = postFinder ? indexOf.call( seed, elem ) : preMap[ i ] ) > -1 ) {\n\n\t\t\t\t\t\tseed[ temp ] = !( results[ temp ] = elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Add elements to results, through postFinder if defined\n\t\t} else {\n\t\t\tmatcherOut = condense(\n\t\t\t\tmatcherOut === results ?\n\t\t\t\t\tmatcherOut.splice( preexisting, matcherOut.length ) :\n\t\t\t\t\tmatcherOut\n\t\t\t);\n\t\t\tif ( postFinder ) {\n\t\t\t\tpostFinder( null, results, matcherOut, xml );\n\t\t\t} else {\n\t\t\t\tpush.apply( results, matcherOut );\n\t\t\t}\n\t\t}\n\t} );\n}\n\nfunction matcherFromTokens( tokens ) {\n\tvar checkContext, matcher, j,\n\t\tlen = tokens.length,\n\t\tleadingRelative = Expr.relative[ tokens[ 0 ].type ],\n\t\timplicitRelative = leadingRelative || Expr.relative[ \" \" ],\n\t\ti = leadingRelative ? 1 : 0,\n\n\t\t// The foundational matcher ensures that elements are reachable from top-level context(s)\n\t\tmatchContext = addCombinator( function( elem ) {\n\t\t\treturn elem === checkContext;\n\t\t}, implicitRelative, true ),\n\t\tmatchAnyContext = addCombinator( function( elem ) {\n\t\t\treturn indexOf.call( checkContext, elem ) > -1;\n\t\t}, implicitRelative, true ),\n\t\tmatchers = [ function( elem, context, xml ) {\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tvar ret = ( !leadingRelative && ( xml || context != outermostContext ) ) || (\n\t\t\t\t( checkContext = context ).nodeType ?\n\t\t\t\t\tmatchContext( elem, context, xml ) :\n\t\t\t\t\tmatchAnyContext( elem, context, xml ) );\n\n\t\t\t// Avoid hanging onto element\n\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\tcheckContext = null;\n\t\t\treturn ret;\n\t\t} ];\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) {\n\t\t\tmatchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];\n\t\t} else {\n\t\t\tmatcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches );\n\n\t\t\t// Return special upon seeing a positional matcher\n\t\t\tif ( matcher[ expando ] ) {\n\n\t\t\t\t// Find the next relative operator (if any) for proper handling\n\t\t\t\tj = ++i;\n\t\t\t\tfor ( ; j < len; j++ ) {\n\t\t\t\t\tif ( Expr.relative[ tokens[ j ].type ] ) {\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn setMatcher(\n\t\t\t\t\ti > 1 && elementMatcher( matchers ),\n\t\t\t\t\ti > 1 && toSelector(\n\n\t\t\t\t\t\t// If the preceding token was a descendant combinator, insert an implicit any-element `*`\n\t\t\t\t\t\ttokens.slice( 0, i - 1 )\n\t\t\t\t\t\t\t.concat( { value: tokens[ i - 2 ].type === \" \" ? \"*\" : \"\" } )\n\t\t\t\t\t).replace( rtrimCSS, \"$1\" ),\n\t\t\t\t\tmatcher,\n\t\t\t\t\ti < j && matcherFromTokens( tokens.slice( i, j ) ),\n\t\t\t\t\tj < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ),\n\t\t\t\t\tj < len && toSelector( tokens )\n\t\t\t\t);\n\t\t\t}\n\t\t\tmatchers.push( matcher );\n\t\t}\n\t}\n\n\treturn elementMatcher( matchers );\n}\n\nfunction matcherFromGroupMatchers( elementMatchers, setMatchers ) {\n\tvar bySet = setMatchers.length > 0,\n\t\tbyElement = elementMatchers.length > 0,\n\t\tsuperMatcher = function( seed, context, xml, results, outermost ) {\n\t\t\tvar elem, j, matcher,\n\t\t\t\tmatchedCount = 0,\n\t\t\t\ti = \"0\",\n\t\t\t\tunmatched = seed && [],\n\t\t\t\tsetMatched = [],\n\t\t\t\tcontextBackup = outermostContext,\n\n\t\t\t\t// We must always have either seed elements or outermost context\n\t\t\t\telems = seed || byElement && Expr.find.TAG( \"*\", outermost ),\n\n\t\t\t\t// Use integer dirruns iff this is the outermost matcher\n\t\t\t\tdirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ),\n\t\t\t\tlen = elems.length;\n\n\t\t\tif ( outermost ) {\n\n\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\toutermostContext = context == document || context || outermost;\n\t\t\t}\n\n\t\t\t// Add elements passing elementMatchers directly to results\n\t\t\t// Support: iOS <=7 - 9 only\n\t\t\t// Tolerate NodeList properties (IE: \"length\"; Safari: <number>) matching\n\t\t\t// elements by id. (see trac-14142)\n\t\t\tfor ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) {\n\t\t\t\tif ( byElement && elem ) {\n\t\t\t\t\tj = 0;\n\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( !context && elem.ownerDocument != document ) {\n\t\t\t\t\t\tsetDocument( elem );\n\t\t\t\t\t\txml = !documentIsHTML;\n\t\t\t\t\t}\n\t\t\t\t\twhile ( ( matcher = elementMatchers[ j++ ] ) ) {\n\t\t\t\t\t\tif ( matcher( elem, context || document, xml ) ) {\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( outermost ) {\n\t\t\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Track unmatched elements for set filters\n\t\t\t\tif ( bySet ) {\n\n\t\t\t\t\t// They will have gone through all possible matchers\n\t\t\t\t\tif ( ( elem = !matcher && elem ) ) {\n\t\t\t\t\t\tmatchedCount--;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Lengthen the array for every element, matched or not\n\t\t\t\t\tif ( seed ) {\n\t\t\t\t\t\tunmatched.push( elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// `i` is now the count of elements visited above, and adding it to `matchedCount`\n\t\t\t// makes the latter nonnegative.\n\t\t\tmatchedCount += i;\n\n\t\t\t// Apply set filters to unmatched elements\n\t\t\t// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n\t\t\t// equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n\t\t\t// no element matchers and no seed.\n\t\t\t// Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n\t\t\t// case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n\t\t\t// numerically zero.\n\t\t\tif ( bySet && i !== matchedCount ) {\n\t\t\t\tj = 0;\n\t\t\t\twhile ( ( matcher = setMatchers[ j++ ] ) ) {\n\t\t\t\t\tmatcher( unmatched, setMatched, context, xml );\n\t\t\t\t}\n\n\t\t\t\tif ( seed ) {\n\n\t\t\t\t\t// Reintegrate element matches to eliminate the need for sorting\n\t\t\t\t\tif ( matchedCount > 0 ) {\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tif ( !( unmatched[ i ] || setMatched[ i ] ) ) {\n\t\t\t\t\t\t\t\tsetMatched[ i ] = pop.call( results );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Discard index placeholder values to get only actual matches\n\t\t\t\t\tsetMatched = condense( setMatched );\n\t\t\t\t}\n\n\t\t\t\t// Add matches to results\n\t\t\t\tpush.apply( results, setMatched );\n\n\t\t\t\t// Seedless set matches succeeding multiple successful matchers stipulate sorting\n\t\t\t\tif ( outermost && !seed && setMatched.length > 0 &&\n\t\t\t\t\t( matchedCount + setMatchers.length ) > 1 ) {\n\n\t\t\t\t\tjQuery.uniqueSort( results );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Override manipulation of globals by nested matchers\n\t\t\tif ( outermost ) {\n\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\toutermostContext = contextBackup;\n\t\t\t}\n\n\t\t\treturn unmatched;\n\t\t};\n\n\treturn bySet ?\n\t\tmarkFunction( superMatcher ) :\n\t\tsuperMatcher;\n}\n\nfunction compile( selector, match /* Internal Use Only */ ) {\n\tvar i,\n\t\tsetMatchers = [],\n\t\telementMatchers = [],\n\t\tcached = compilerCache[ selector + \" \" ];\n\n\tif ( !cached ) {\n\n\t\t// Generate a function of recursive functions that can be used to check each element\n\t\tif ( !match ) {\n\t\t\tmatch = tokenize( selector );\n\t\t}\n\t\ti = match.length;\n\t\twhile ( i-- ) {\n\t\t\tcached = matcherFromTokens( match[ i ] );\n\t\t\tif ( cached[ expando ] ) {\n\t\t\t\tsetMatchers.push( cached );\n\t\t\t} else {\n\t\t\t\telementMatchers.push( cached );\n\t\t\t}\n\t\t}\n\n\t\t// Cache the compiled function\n\t\tcached = compilerCache( selector,\n\t\t\tmatcherFromGroupMatchers( elementMatchers, setMatchers ) );\n\n\t\t// Save selector and tokenization\n\t\tcached.selector = selector;\n\t}\n\treturn cached;\n}\n\n/**\n * A low-level selection function that works with jQuery's compiled\n *  selector functions\n * @param {String|Function} selector A selector or a pre-compiled\n *  selector function built with jQuery selector compile\n * @param {Element} context\n * @param {Array} [results]\n * @param {Array} [seed] A set of elements to match against\n */\nfunction select( selector, context, results, seed ) {\n\tvar i, tokens, token, type, find,\n\t\tcompiled = typeof selector === \"function\" && selector,\n\t\tmatch = !seed && tokenize( ( selector = compiled.selector || selector ) );\n\n\tresults = results || [];\n\n\t// Try to minimize operations if there is only one selector in the list and no seed\n\t// (the latter of which guarantees us context)\n\tif ( match.length === 1 ) {\n\n\t\t// Reduce context if the leading compound selector is an ID\n\t\ttokens = match[ 0 ] = match[ 0 ].slice( 0 );\n\t\tif ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === \"ID\" &&\n\t\t\t\tcontext.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) {\n\n\t\t\tcontext = ( Expr.find.ID(\n\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\tcontext\n\t\t\t) || [] )[ 0 ];\n\t\t\tif ( !context ) {\n\t\t\t\treturn results;\n\n\t\t\t// Precompiled matchers will still verify ancestry, so step up a level\n\t\t\t} else if ( compiled ) {\n\t\t\t\tcontext = context.parentNode;\n\t\t\t}\n\n\t\t\tselector = selector.slice( tokens.shift().value.length );\n\t\t}\n\n\t\t// Fetch a seed set for right-to-left matching\n\t\ti = matchExpr.needsContext.test( selector ) ? 0 : tokens.length;\n\t\twhile ( i-- ) {\n\t\t\ttoken = tokens[ i ];\n\n\t\t\t// Abort if we hit a combinator\n\t\t\tif ( Expr.relative[ ( type = token.type ) ] ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( ( find = Expr.find[ type ] ) ) {\n\n\t\t\t\t// Search, expanding context for leading sibling combinators\n\t\t\t\tif ( ( seed = find(\n\t\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\t\trsibling.test( tokens[ 0 ].type ) &&\n\t\t\t\t\t\ttestContext( context.parentNode ) || context\n\t\t\t\t) ) ) {\n\n\t\t\t\t\t// If seed is empty or no tokens remain, we can return early\n\t\t\t\t\ttokens.splice( i, 1 );\n\t\t\t\t\tselector = seed.length && toSelector( tokens );\n\t\t\t\t\tif ( !selector ) {\n\t\t\t\t\t\tpush.apply( results, seed );\n\t\t\t\t\t\treturn results;\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Compile and execute a filtering function if one is not provided\n\t// Provide `match` to avoid retokenization if we modified the selector above\n\t( compiled || compile( selector, match ) )(\n\t\tseed,\n\t\tcontext,\n\t\t!documentIsHTML,\n\t\tresults,\n\t\t!context || rsibling.test( selector ) && testContext( context.parentNode ) || context\n\t);\n\treturn results;\n}\n\n// One-time assignments\n\n// Support: Android <=4.0 - 4.1+\n// Sort stability\nsupport.sortStable = expando.split( \"\" ).sort( sortOrder ).join( \"\" ) === expando;\n\n// Initialize against the default document\nsetDocument();\n\n// Support: Android <=4.0 - 4.1+\n// Detached nodes confoundingly follow *each other*\nsupport.sortDetached = assert( function( el ) {\n\n\t// Should return 1, but returns 4 (following)\n\treturn el.compareDocumentPosition( document.createElement( \"fieldset\" ) ) & 1;\n} );\n\njQuery.find = find;\n\n// Deprecated\njQuery.expr[ \":\" ] = jQuery.expr.pseudos;\njQuery.unique = jQuery.uniqueSort;\n\n// These have always been private, but they used to be documented as part of\n// Sizzle so let's maintain them for now for backwards compatibility purposes.\nfind.compile = compile;\nfind.select = select;\nfind.setDocument = setDocument;\nfind.tokenize = tokenize;\n\nfind.escape = jQuery.escapeSelector;\nfind.getText = jQuery.text;\nfind.isXML = jQuery.isXMLDoc;\nfind.selectors = jQuery.expr;\nfind.support = jQuery.support;\nfind.uniqueSort = jQuery.uniqueSort;\n\n\t/* eslint-enable */\n\n} )();\n\n\nvar dir = function( elem, dir, until ) {\n\tvar matched = [],\n\t\ttruncate = until !== undefined;\n\n\twhile ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {\n\t\tif ( elem.nodeType === 1 ) {\n\t\t\tif ( truncate && jQuery( elem ).is( until ) ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tmatched.push( elem );\n\t\t}\n\t}\n\treturn matched;\n};\n\n\nvar siblings = function( n, elem ) {\n\tvar matched = [];\n\n\tfor ( ; n; n = n.nextSibling ) {\n\t\tif ( n.nodeType === 1 && n !== elem ) {\n\t\t\tmatched.push( n );\n\t\t}\n\t}\n\n\treturn matched;\n};\n\n\nvar rneedsContext = jQuery.expr.match.needsContext;\n\nvar rsingleTag = ( /^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i );\n\n\n\n// Implement the identical functionality for filter and not\nfunction winnow( elements, qualifier, not ) {\n\tif ( isFunction( qualifier ) ) {\n\t\treturn jQuery.grep( elements, function( elem, i ) {\n\t\t\treturn !!qualifier.call( elem, i, elem ) !== not;\n\t\t} );\n\t}\n\n\t// Single element\n\tif ( qualifier.nodeType ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( elem === qualifier ) !== not;\n\t\t} );\n\t}\n\n\t// Arraylike of elements (jQuery, arguments, Array)\n\tif ( typeof qualifier !== \"string\" ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( indexOf.call( qualifier, elem ) > -1 ) !== not;\n\t\t} );\n\t}\n\n\t// Filtered directly for both simple and complex selectors\n\treturn jQuery.filter( qualifier, elements, not );\n}\n\njQuery.filter = function( expr, elems, not ) {\n\tvar elem = elems[ 0 ];\n\n\tif ( not ) {\n\t\texpr = \":not(\" + expr + \")\";\n\t}\n\n\tif ( elems.length === 1 && elem.nodeType === 1 ) {\n\t\treturn jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];\n\t}\n\n\treturn jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {\n\t\treturn elem.nodeType === 1;\n\t} ) );\n};\n\njQuery.fn.extend( {\n\tfind: function( selector ) {\n\t\tvar i, ret,\n\t\t\tlen = this.length,\n\t\t\tself = this;\n\n\t\tif ( typeof selector !== \"string\" ) {\n\t\t\treturn this.pushStack( jQuery( selector ).filter( function() {\n\t\t\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\t\t\tif ( jQuery.contains( self[ i ], this ) ) {\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} ) );\n\t\t}\n\n\t\tret = this.pushStack( [] );\n\n\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\tjQuery.find( selector, self[ i ], ret );\n\t\t}\n\n\t\treturn len > 1 ? jQuery.uniqueSort( ret ) : ret;\n\t},\n\tfilter: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], false ) );\n\t},\n\tnot: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], true ) );\n\t},\n\tis: function( selector ) {\n\t\treturn !!winnow(\n\t\t\tthis,\n\n\t\t\t// If this is a positional/relative selector, check membership in the returned set\n\t\t\t// so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n\t\t\ttypeof selector === \"string\" && rneedsContext.test( selector ) ?\n\t\t\t\tjQuery( selector ) :\n\t\t\t\tselector || [],\n\t\t\tfalse\n\t\t).length;\n\t}\n} );\n\n\n// Initialize a jQuery object\n\n\n// A central reference to the root jQuery(document)\nvar rootjQuery,\n\n\t// A simple way to check for HTML strings\n\t// Prioritize #id over <tag> to avoid XSS via location.hash (trac-9521)\n\t// Strict HTML recognition (trac-11290: must start with <)\n\t// Shortcut simple #id case for speed\n\trquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/,\n\n\tinit = jQuery.fn.init = function( selector, context, root ) {\n\t\tvar match, elem;\n\n\t\t// HANDLE: $(\"\"), $(null), $(undefined), $(false)\n\t\tif ( !selector ) {\n\t\t\treturn this;\n\t\t}\n\n\t\t// Method init() accepts an alternate rootjQuery\n\t\t// so migrate can support jQuery.sub (gh-2101)\n\t\troot = root || rootjQuery;\n\n\t\t// Handle HTML strings\n\t\tif ( typeof selector === \"string\" ) {\n\t\t\tif ( selector[ 0 ] === \"<\" &&\n\t\t\t\tselector[ selector.length - 1 ] === \">\" &&\n\t\t\t\tselector.length >= 3 ) {\n\n\t\t\t\t// Assume that strings that start and end with <> are HTML and skip the regex check\n\t\t\t\tmatch = [ null, selector, null ];\n\n\t\t\t} else {\n\t\t\t\tmatch = rquickExpr.exec( selector );\n\t\t\t}\n\n\t\t\t// Match html or make sure no context is specified for #id\n\t\t\tif ( match && ( match[ 1 ] || !context ) ) {\n\n\t\t\t\t// HANDLE: $(html) -> $(array)\n\t\t\t\tif ( match[ 1 ] ) {\n\t\t\t\t\tcontext = context instanceof jQuery ? context[ 0 ] : context;\n\n\t\t\t\t\t// Option to run scripts is true for back-compat\n\t\t\t\t\t// Intentionally let the error be thrown if parseHTML is not present\n\t\t\t\t\tjQuery.merge( this, jQuery.parseHTML(\n\t\t\t\t\t\tmatch[ 1 ],\n\t\t\t\t\t\tcontext && context.nodeType ? context.ownerDocument || context : document,\n\t\t\t\t\t\ttrue\n\t\t\t\t\t) );\n\n\t\t\t\t\t// HANDLE: $(html, props)\n\t\t\t\t\tif ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {\n\t\t\t\t\t\tfor ( match in context ) {\n\n\t\t\t\t\t\t\t// Properties of context are called as methods if possible\n\t\t\t\t\t\t\tif ( isFunction( this[ match ] ) ) {\n\t\t\t\t\t\t\t\tthis[ match ]( context[ match ] );\n\n\t\t\t\t\t\t\t// ...and otherwise set as attributes\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tthis.attr( match, context[ match ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\treturn this;\n\n\t\t\t\t// HANDLE: $(#id)\n\t\t\t\t} else {\n\t\t\t\t\telem = document.getElementById( match[ 2 ] );\n\n\t\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t\t// Inject the element directly into the jQuery object\n\t\t\t\t\t\tthis[ 0 ] = elem;\n\t\t\t\t\t\tthis.length = 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\n\t\t\t// HANDLE: $(expr, $(...))\n\t\t\t} else if ( !context || context.jquery ) {\n\t\t\t\treturn ( context || root ).find( selector );\n\n\t\t\t// HANDLE: $(expr, context)\n\t\t\t// (which is just equivalent to: $(context).find(expr)\n\t\t\t} else {\n\t\t\t\treturn this.constructor( context ).find( selector );\n\t\t\t}\n\n\t\t// HANDLE: $(DOMElement)\n\t\t} else if ( selector.nodeType ) {\n\t\t\tthis[ 0 ] = selector;\n\t\t\tthis.length = 1;\n\t\t\treturn this;\n\n\t\t// HANDLE: $(function)\n\t\t// Shortcut for document ready\n\t\t} else if ( isFunction( selector ) ) {\n\t\t\treturn root.ready !== undefined ?\n\t\t\t\troot.ready( selector ) :\n\n\t\t\t\t// Execute immediately if ready is not present\n\t\t\t\tselector( jQuery );\n\t\t}\n\n\t\treturn jQuery.makeArray( selector, this );\n\t};\n\n// Give the init function the jQuery prototype for later instantiation\ninit.prototype = jQuery.fn;\n\n// Initialize central reference\nrootjQuery = jQuery( document );\n\n\nvar rparentsprev = /^(?:parents|prev(?:Until|All))/,\n\n\t// Methods guaranteed to produce a unique set when starting from a unique set\n\tguaranteedUnique = {\n\t\tchildren: true,\n\t\tcontents: true,\n\t\tnext: true,\n\t\tprev: true\n\t};\n\njQuery.fn.extend( {\n\thas: function( target ) {\n\t\tvar targets = jQuery( target, this ),\n\t\t\tl = targets.length;\n\n\t\treturn this.filter( function() {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tif ( jQuery.contains( this, targets[ i ] ) ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\tclosest: function( selectors, context ) {\n\t\tvar cur,\n\t\t\ti = 0,\n\t\t\tl = this.length,\n\t\t\tmatched = [],\n\t\t\ttargets = typeof selectors !== \"string\" && jQuery( selectors );\n\n\t\t// Positional selectors never match, since there's no _selection_ context\n\t\tif ( !rneedsContext.test( selectors ) ) {\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tfor ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {\n\n\t\t\t\t\t// Always skip document fragments\n\t\t\t\t\tif ( cur.nodeType < 11 && ( targets ?\n\t\t\t\t\t\ttargets.index( cur ) > -1 :\n\n\t\t\t\t\t\t// Don't pass non-elements to jQuery#find\n\t\t\t\t\t\tcur.nodeType === 1 &&\n\t\t\t\t\t\t\tjQuery.find.matchesSelector( cur, selectors ) ) ) {\n\n\t\t\t\t\t\tmatched.push( cur );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );\n\t},\n\n\t// Determine the position of an element within the set\n\tindex: function( elem ) {\n\n\t\t// No argument, return index in parent\n\t\tif ( !elem ) {\n\t\t\treturn ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;\n\t\t}\n\n\t\t// Index in selector\n\t\tif ( typeof elem === \"string\" ) {\n\t\t\treturn indexOf.call( jQuery( elem ), this[ 0 ] );\n\t\t}\n\n\t\t// Locate the position of the desired element\n\t\treturn indexOf.call( this,\n\n\t\t\t// If it receives a jQuery object, the first element is used\n\t\t\telem.jquery ? elem[ 0 ] : elem\n\t\t);\n\t},\n\n\tadd: function( selector, context ) {\n\t\treturn this.pushStack(\n\t\t\tjQuery.uniqueSort(\n\t\t\t\tjQuery.merge( this.get(), jQuery( selector, context ) )\n\t\t\t)\n\t\t);\n\t},\n\n\taddBack: function( selector ) {\n\t\treturn this.add( selector == null ?\n\t\t\tthis.prevObject : this.prevObject.filter( selector )\n\t\t);\n\t}\n} );\n\nfunction sibling( cur, dir ) {\n\twhile ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}\n\treturn cur;\n}\n\njQuery.each( {\n\tparent: function( elem ) {\n\t\tvar parent = elem.parentNode;\n\t\treturn parent && parent.nodeType !== 11 ? parent : null;\n\t},\n\tparents: function( elem ) {\n\t\treturn dir( elem, \"parentNode\" );\n\t},\n\tparentsUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"parentNode\", until );\n\t},\n\tnext: function( elem ) {\n\t\treturn sibling( elem, \"nextSibling\" );\n\t},\n\tprev: function( elem ) {\n\t\treturn sibling( elem, \"previousSibling\" );\n\t},\n\tnextAll: function( elem ) {\n\t\treturn dir( elem, \"nextSibling\" );\n\t},\n\tprevAll: function( elem ) {\n\t\treturn dir( elem, \"previousSibling\" );\n\t},\n\tnextUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"nextSibling\", until );\n\t},\n\tprevUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"previousSibling\", until );\n\t},\n\tsiblings: function( elem ) {\n\t\treturn siblings( ( elem.parentNode || {} ).firstChild, elem );\n\t},\n\tchildren: function( elem ) {\n\t\treturn siblings( elem.firstChild );\n\t},\n\tcontents: function( elem ) {\n\t\tif ( elem.contentDocument != null &&\n\n\t\t\t// Support: IE 11+\n\t\t\t// <object> elements with no `data` attribute has an object\n\t\t\t// `contentDocument` with a `null` prototype.\n\t\t\tgetProto( elem.contentDocument ) ) {\n\n\t\t\treturn elem.contentDocument;\n\t\t}\n\n\t\t// Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n\t\t// Treat the template element as a regular one in browsers that\n\t\t// don't support it.\n\t\tif ( nodeName( elem, \"template\" ) ) {\n\t\t\telem = elem.content || elem;\n\t\t}\n\n\t\treturn jQuery.merge( [], elem.childNodes );\n\t}\n}, function( name, fn ) {\n\tjQuery.fn[ name ] = function( until, selector ) {\n\t\tvar matched = jQuery.map( this, fn, until );\n\n\t\tif ( name.slice( -5 ) !== \"Until\" ) {\n\t\t\tselector = until;\n\t\t}\n\n\t\tif ( selector && typeof selector === \"string\" ) {\n\t\t\tmatched = jQuery.filter( selector, matched );\n\t\t}\n\n\t\tif ( this.length > 1 ) {\n\n\t\t\t// Remove duplicates\n\t\t\tif ( !guaranteedUnique[ name ] ) {\n\t\t\t\tjQuery.uniqueSort( matched );\n\t\t\t}\n\n\t\t\t// Reverse order for parents* and prev-derivatives\n\t\t\tif ( rparentsprev.test( name ) ) {\n\t\t\t\tmatched.reverse();\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched );\n\t};\n} );\nvar rnothtmlwhite = ( /[^\\x20\\t\\r\\n\\f]+/g );\n\n\n\n// Convert String-formatted options into Object-formatted ones\nfunction createOptions( options ) {\n\tvar object = {};\n\tjQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {\n\t\tobject[ flag ] = true;\n\t} );\n\treturn object;\n}\n\n/*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */\njQuery.Callbacks = function( options ) {\n\n\t// Convert options from String-formatted to Object-formatted if needed\n\t// (we check in cache first)\n\toptions = typeof options === \"string\" ?\n\t\tcreateOptions( options ) :\n\t\tjQuery.extend( {}, options );\n\n\tvar // Flag to know if list is currently firing\n\t\tfiring,\n\n\t\t// Last fire value for non-forgettable lists\n\t\tmemory,\n\n\t\t// Flag to know if list was already fired\n\t\tfired,\n\n\t\t// Flag to prevent firing\n\t\tlocked,\n\n\t\t// Actual callback list\n\t\tlist = [],\n\n\t\t// Queue of execution data for repeatable lists\n\t\tqueue = [],\n\n\t\t// Index of currently firing callback (modified by add/remove as needed)\n\t\tfiringIndex = -1,\n\n\t\t// Fire callbacks\n\t\tfire = function() {\n\n\t\t\t// Enforce single-firing\n\t\t\tlocked = locked || options.once;\n\n\t\t\t// Execute callbacks for all pending executions,\n\t\t\t// respecting firingIndex overrides and runtime changes\n\t\t\tfired = firing = true;\n\t\t\tfor ( ; queue.length; firingIndex = -1 ) {\n\t\t\t\tmemory = queue.shift();\n\t\t\t\twhile ( ++firingIndex < list.length ) {\n\n\t\t\t\t\t// Run callback and check for early termination\n\t\t\t\t\tif ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&\n\t\t\t\t\t\toptions.stopOnFalse ) {\n\n\t\t\t\t\t\t// Jump to end and forget the data so .add doesn't re-fire\n\t\t\t\t\t\tfiringIndex = list.length;\n\t\t\t\t\t\tmemory = false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Forget the data if we're done with it\n\t\t\tif ( !options.memory ) {\n\t\t\t\tmemory = false;\n\t\t\t}\n\n\t\t\tfiring = false;\n\n\t\t\t// Clean up if we're done firing for good\n\t\t\tif ( locked ) {\n\n\t\t\t\t// Keep an empty list if we have data for future add calls\n\t\t\t\tif ( memory ) {\n\t\t\t\t\tlist = [];\n\n\t\t\t\t// Otherwise, this object is spent\n\t\t\t\t} else {\n\t\t\t\t\tlist = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\t\t// Actual Callbacks object\n\t\tself = {\n\n\t\t\t// Add a callback or a collection of callbacks to the list\n\t\t\tadd: function() {\n\t\t\t\tif ( list ) {\n\n\t\t\t\t\t// If we have memory from a past run, we should fire after adding\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfiringIndex = list.length - 1;\n\t\t\t\t\t\tqueue.push( memory );\n\t\t\t\t\t}\n\n\t\t\t\t\t( function add( args ) {\n\t\t\t\t\t\tjQuery.each( args, function( _, arg ) {\n\t\t\t\t\t\t\tif ( isFunction( arg ) ) {\n\t\t\t\t\t\t\t\tif ( !options.unique || !self.has( arg ) ) {\n\t\t\t\t\t\t\t\t\tlist.push( arg );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else if ( arg && arg.length && toType( arg ) !== \"string\" ) {\n\n\t\t\t\t\t\t\t\t// Inspect recursively\n\t\t\t\t\t\t\t\tadd( arg );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} );\n\t\t\t\t\t} )( arguments );\n\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Remove a callback from the list\n\t\t\tremove: function() {\n\t\t\t\tjQuery.each( arguments, function( _, arg ) {\n\t\t\t\t\tvar index;\n\t\t\t\t\twhile ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {\n\t\t\t\t\t\tlist.splice( index, 1 );\n\n\t\t\t\t\t\t// Handle firing indexes\n\t\t\t\t\t\tif ( index <= firingIndex ) {\n\t\t\t\t\t\t\tfiringIndex--;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Check if a given callback is in the list.\n\t\t\t// If no argument is given, return whether or not list has callbacks attached.\n\t\t\thas: function( fn ) {\n\t\t\t\treturn fn ?\n\t\t\t\t\tjQuery.inArray( fn, list ) > -1 :\n\t\t\t\t\tlist.length > 0;\n\t\t\t},\n\n\t\t\t// Remove all callbacks from the list\n\t\t\tempty: function() {\n\t\t\t\tif ( list ) {\n\t\t\t\t\tlist = [];\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Disable .fire and .add\n\t\t\t// Abort any current/pending executions\n\t\t\t// Clear all callbacks and values\n\t\t\tdisable: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tlist = memory = \"\";\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tdisabled: function() {\n\t\t\t\treturn !list;\n\t\t\t},\n\n\t\t\t// Disable .fire\n\t\t\t// Also disable .add unless we have memory (since it would have no effect)\n\t\t\t// Abort any pending executions\n\t\t\tlock: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tif ( !memory && !firing ) {\n\t\t\t\t\tlist = memory = \"\";\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tlocked: function() {\n\t\t\t\treturn !!locked;\n\t\t\t},\n\n\t\t\t// Call all callbacks with the given context and arguments\n\t\t\tfireWith: function( context, args ) {\n\t\t\t\tif ( !locked ) {\n\t\t\t\t\targs = args || [];\n\t\t\t\t\targs = [ context, args.slice ? args.slice() : args ];\n\t\t\t\t\tqueue.push( args );\n\t\t\t\t\tif ( !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Call all the callbacks with the given arguments\n\t\t\tfire: function() {\n\t\t\t\tself.fireWith( this, arguments );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// To know if the callbacks have already been called at least once\n\t\t\tfired: function() {\n\t\t\t\treturn !!fired;\n\t\t\t}\n\t\t};\n\n\treturn self;\n};\n\n\nfunction Identity( v ) {\n\treturn v;\n}\nfunction Thrower( ex ) {\n\tthrow ex;\n}\n\nfunction adoptValue( value, resolve, reject, noValue ) {\n\tvar method;\n\n\ttry {\n\n\t\t// Check for promise aspect first to privilege synchronous behavior\n\t\tif ( value && isFunction( ( method = value.promise ) ) ) {\n\t\t\tmethod.call( value ).done( resolve ).fail( reject );\n\n\t\t// Other thenables\n\t\t} else if ( value && isFunction( ( method = value.then ) ) ) {\n\t\t\tmethod.call( value, resolve, reject );\n\n\t\t// Other non-thenables\n\t\t} else {\n\n\t\t\t// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n\t\t\t// * false: [ value ].slice( 0 ) => resolve( value )\n\t\t\t// * true: [ value ].slice( 1 ) => resolve()\n\t\t\tresolve.apply( undefined, [ value ].slice( noValue ) );\n\t\t}\n\n\t// For Promises/A+, convert exceptions into rejections\n\t// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n\t// Deferred#then to conditionally suppress rejection.\n\t} catch ( value ) {\n\n\t\t// Support: Android 4.0 only\n\t\t// Strict mode functions invoked without .call/.apply get global-object context\n\t\treject.apply( undefined, [ value ] );\n\t}\n}\n\njQuery.extend( {\n\n\tDeferred: function( func ) {\n\t\tvar tuples = [\n\n\t\t\t\t// action, add listener, callbacks,\n\t\t\t\t// ... .then handlers, argument index, [final state]\n\t\t\t\t[ \"notify\", \"progress\", jQuery.Callbacks( \"memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"memory\" ), 2 ],\n\t\t\t\t[ \"resolve\", \"done\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 0, \"resolved\" ],\n\t\t\t\t[ \"reject\", \"fail\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 1, \"rejected\" ]\n\t\t\t],\n\t\t\tstate = \"pending\",\n\t\t\tpromise = {\n\t\t\t\tstate: function() {\n\t\t\t\t\treturn state;\n\t\t\t\t},\n\t\t\t\talways: function() {\n\t\t\t\t\tdeferred.done( arguments ).fail( arguments );\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\t\t\t\t\"catch\": function( fn ) {\n\t\t\t\t\treturn promise.then( null, fn );\n\t\t\t\t},\n\n\t\t\t\t// Keep pipe for back-compat\n\t\t\t\tpipe: function( /* fnDone, fnFail, fnProgress */ ) {\n\t\t\t\t\tvar fns = arguments;\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\t\t\t\t\t\tjQuery.each( tuples, function( _i, tuple ) {\n\n\t\t\t\t\t\t\t// Map tuples (progress, done, fail) to arguments (done, fail, progress)\n\t\t\t\t\t\t\tvar fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];\n\n\t\t\t\t\t\t\t// deferred.progress(function() { bind to newDefer or newDefer.notify })\n\t\t\t\t\t\t\t// deferred.done(function() { bind to newDefer or newDefer.resolve })\n\t\t\t\t\t\t\t// deferred.fail(function() { bind to newDefer or newDefer.reject })\n\t\t\t\t\t\t\tdeferred[ tuple[ 1 ] ]( function() {\n\t\t\t\t\t\t\t\tvar returned = fn && fn.apply( this, arguments );\n\t\t\t\t\t\t\t\tif ( returned && isFunction( returned.promise ) ) {\n\t\t\t\t\t\t\t\t\treturned.promise()\n\t\t\t\t\t\t\t\t\t\t.progress( newDefer.notify )\n\t\t\t\t\t\t\t\t\t\t.done( newDefer.resolve )\n\t\t\t\t\t\t\t\t\t\t.fail( newDefer.reject );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tnewDefer[ tuple[ 0 ] + \"With\" ](\n\t\t\t\t\t\t\t\t\t\tthis,\n\t\t\t\t\t\t\t\t\t\tfn ? [ returned ] : arguments\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t} );\n\t\t\t\t\t\tfns = null;\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\t\t\t\tthen: function( onFulfilled, onRejected, onProgress ) {\n\t\t\t\t\tvar maxDepth = 0;\n\t\t\t\t\tfunction resolve( depth, deferred, handler, special ) {\n\t\t\t\t\t\treturn function() {\n\t\t\t\t\t\t\tvar that = this,\n\t\t\t\t\t\t\t\targs = arguments,\n\t\t\t\t\t\t\t\tmightThrow = function() {\n\t\t\t\t\t\t\t\t\tvar returned, then;\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.3\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-59\n\t\t\t\t\t\t\t\t\t// Ignore double-resolution attempts\n\t\t\t\t\t\t\t\t\tif ( depth < maxDepth ) {\n\t\t\t\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\treturned = handler.apply( that, args );\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.1\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-48\n\t\t\t\t\t\t\t\t\tif ( returned === deferred.promise() ) {\n\t\t\t\t\t\t\t\t\t\tthrow new TypeError( \"Thenable self-resolution\" );\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ sections 2.3.3.1, 3.5\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-54\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-75\n\t\t\t\t\t\t\t\t\t// Retrieve `then` only once\n\t\t\t\t\t\t\t\t\tthen = returned &&\n\n\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.4\n\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-64\n\t\t\t\t\t\t\t\t\t\t// Only check objects and functions for thenability\n\t\t\t\t\t\t\t\t\t\t( typeof returned === \"object\" ||\n\t\t\t\t\t\t\t\t\t\t\ttypeof returned === \"function\" ) &&\n\t\t\t\t\t\t\t\t\t\treturned.then;\n\n\t\t\t\t\t\t\t\t\t// Handle a returned thenable\n\t\t\t\t\t\t\t\t\tif ( isFunction( then ) ) {\n\n\t\t\t\t\t\t\t\t\t\t// Special processors (notify) just wait for resolution\n\t\t\t\t\t\t\t\t\t\tif ( special ) {\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special )\n\t\t\t\t\t\t\t\t\t\t\t);\n\n\t\t\t\t\t\t\t\t\t\t// Normal processors (resolve) also hook into progress\n\t\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t\t// ...and disregard older resolution values\n\t\t\t\t\t\t\t\t\t\t\tmaxDepth++;\n\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity,\n\t\t\t\t\t\t\t\t\t\t\t\t\tdeferred.notifyWith )\n\t\t\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Handle all other returned values\n\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\tif ( handler !== Identity ) {\n\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\targs = [ returned ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t// Process the value(s)\n\t\t\t\t\t\t\t\t\t\t// Default process is resolve\n\t\t\t\t\t\t\t\t\t\t( special || deferred.resolveWith )( that, args );\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t},\n\n\t\t\t\t\t\t\t\t// Only normal processors (resolve) catch and reject exceptions\n\t\t\t\t\t\t\t\tprocess = special ?\n\t\t\t\t\t\t\t\t\tmightThrow :\n\t\t\t\t\t\t\t\t\tfunction() {\n\t\t\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\t\t\tmightThrow();\n\t\t\t\t\t\t\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t\t\t\t\t\t\tif ( jQuery.Deferred.exceptionHook ) {\n\t\t\t\t\t\t\t\t\t\t\t\tjQuery.Deferred.exceptionHook( e,\n\t\t\t\t\t\t\t\t\t\t\t\t\tprocess.error );\n\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.4.1\n\t\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-61\n\t\t\t\t\t\t\t\t\t\t\t// Ignore post-resolution exceptions\n\t\t\t\t\t\t\t\t\t\t\tif ( depth + 1 >= maxDepth ) {\n\n\t\t\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\t\t\tif ( handler !== Thrower ) {\n\t\t\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\t\t\targs = [ e ];\n\t\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t\tdeferred.rejectWith( that, args );\n\t\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t};\n\n\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.1\n\t\t\t\t\t\t\t// https://promisesaplus.com/#point-57\n\t\t\t\t\t\t\t// Re-resolve promises immediately to dodge false rejection from\n\t\t\t\t\t\t\t// subsequent errors\n\t\t\t\t\t\t\tif ( depth ) {\n\t\t\t\t\t\t\t\tprocess();\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// Call an optional hook to record the error, in case of exception\n\t\t\t\t\t\t\t\t// since it's otherwise lost when execution goes async\n\t\t\t\t\t\t\t\tif ( jQuery.Deferred.getErrorHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getErrorHook();\n\n\t\t\t\t\t\t\t\t// The deprecated alias of the above. While the name suggests\n\t\t\t\t\t\t\t\t// returning the stack, not an error instance, jQuery just passes\n\t\t\t\t\t\t\t\t// it directly to `console.warn` so both will work; an instance\n\t\t\t\t\t\t\t\t// just better cooperates with source maps.\n\t\t\t\t\t\t\t\t} else if ( jQuery.Deferred.getStackHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getStackHook();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\twindow.setTimeout( process );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t};\n\t\t\t\t\t}\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\n\t\t\t\t\t\t// progress_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 0 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onProgress ) ?\n\t\t\t\t\t\t\t\t\tonProgress :\n\t\t\t\t\t\t\t\t\tIdentity,\n\t\t\t\t\t\t\t\tnewDefer.notifyWith\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// fulfilled_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 1 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onFulfilled ) ?\n\t\t\t\t\t\t\t\t\tonFulfilled :\n\t\t\t\t\t\t\t\t\tIdentity\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// rejected_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 2 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onRejected ) ?\n\t\t\t\t\t\t\t\t\tonRejected :\n\t\t\t\t\t\t\t\t\tThrower\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\n\t\t\t\t// Get a promise for this deferred\n\t\t\t\t// If obj is provided, the promise aspect is added to the object\n\t\t\t\tpromise: function( obj ) {\n\t\t\t\t\treturn obj != null ? jQuery.extend( obj, promise ) : promise;\n\t\t\t\t}\n\t\t\t},\n\t\t\tdeferred = {};\n\n\t\t// Add list-specific methods\n\t\tjQuery.each( tuples, function( i, tuple ) {\n\t\t\tvar list = tuple[ 2 ],\n\t\t\t\tstateString = tuple[ 5 ];\n\n\t\t\t// promise.progress = list.add\n\t\t\t// promise.done = list.add\n\t\t\t// promise.fail = list.add\n\t\t\tpromise[ tuple[ 1 ] ] = list.add;\n\n\t\t\t// Handle state\n\t\t\tif ( stateString ) {\n\t\t\t\tlist.add(\n\t\t\t\t\tfunction() {\n\n\t\t\t\t\t\t// state = \"resolved\" (i.e., fulfilled)\n\t\t\t\t\t\t// state = \"rejected\"\n\t\t\t\t\t\tstate = stateString;\n\t\t\t\t\t},\n\n\t\t\t\t\t// rejected_callbacks.disable\n\t\t\t\t\t// fulfilled_callbacks.disable\n\t\t\t\t\ttuples[ 3 - i ][ 2 ].disable,\n\n\t\t\t\t\t// rejected_handlers.disable\n\t\t\t\t\t// fulfilled_handlers.disable\n\t\t\t\t\ttuples[ 3 - i ][ 3 ].disable,\n\n\t\t\t\t\t// progress_callbacks.lock\n\t\t\t\t\ttuples[ 0 ][ 2 ].lock,\n\n\t\t\t\t\t// progress_handlers.lock\n\t\t\t\t\ttuples[ 0 ][ 3 ].lock\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// progress_handlers.fire\n\t\t\t// fulfilled_handlers.fire\n\t\t\t// rejected_handlers.fire\n\t\t\tlist.add( tuple[ 3 ].fire );\n\n\t\t\t// deferred.notify = function() { deferred.notifyWith(...) }\n\t\t\t// deferred.resolve = function() { deferred.resolveWith(...) }\n\t\t\t// deferred.reject = function() { deferred.rejectWith(...) }\n\t\t\tdeferred[ tuple[ 0 ] ] = function() {\n\t\t\t\tdeferred[ tuple[ 0 ] + \"With\" ]( this === deferred ? undefined : this, arguments );\n\t\t\t\treturn this;\n\t\t\t};\n\n\t\t\t// deferred.notifyWith = list.fireWith\n\t\t\t// deferred.resolveWith = list.fireWith\n\t\t\t// deferred.rejectWith = list.fireWith\n\t\t\tdeferred[ tuple[ 0 ] + \"With\" ] = list.fireWith;\n\t\t} );\n\n\t\t// Make the deferred a promise\n\t\tpromise.promise( deferred );\n\n\t\t// Call given func if any\n\t\tif ( func ) {\n\t\t\tfunc.call( deferred, deferred );\n\t\t}\n\n\t\t// All done!\n\t\treturn deferred;\n\t},\n\n\t// Deferred helper\n\twhen: function( singleValue ) {\n\t\tvar\n\n\t\t\t// count of uncompleted subordinates\n\t\t\tremaining = arguments.length,\n\n\t\t\t// count of unprocessed arguments\n\t\t\ti = remaining,\n\n\t\t\t// subordinate fulfillment data\n\t\t\tresolveContexts = Array( i ),\n\t\t\tresolveValues = slice.call( arguments ),\n\n\t\t\t// the primary Deferred\n\t\t\tprimary = jQuery.Deferred(),\n\n\t\t\t// subordinate callback factory\n\t\t\tupdateFunc = function( i ) {\n\t\t\t\treturn function( value ) {\n\t\t\t\t\tresolveContexts[ i ] = this;\n\t\t\t\t\tresolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;\n\t\t\t\t\tif ( !( --remaining ) ) {\n\t\t\t\t\t\tprimary.resolveWith( resolveContexts, resolveValues );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\n\t\t// Single- and empty arguments are adopted like Promise.resolve\n\t\tif ( remaining <= 1 ) {\n\t\t\tadoptValue( singleValue, primary.done( updateFunc( i ) ).resolve, primary.reject,\n\t\t\t\t!remaining );\n\n\t\t\t// Use .then() to unwrap secondary thenables (cf. gh-3000)\n\t\t\tif ( primary.state() === \"pending\" ||\n\t\t\t\tisFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {\n\n\t\t\t\treturn primary.then();\n\t\t\t}\n\t\t}\n\n\t\t// Multiple arguments are aggregated like Promise.all array elements\n\t\twhile ( i-- ) {\n\t\t\tadoptValue( resolveValues[ i ], updateFunc( i ), primary.reject );\n\t\t}\n\n\t\treturn primary.promise();\n\t}\n} );\n\n\n// These usually indicate a programmer mistake during development,\n// warn about them ASAP rather than swallowing them by default.\nvar rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n\n// If `jQuery.Deferred.getErrorHook` is defined, `asyncError` is an error\n// captured before the async barrier to get the original error cause\n// which may otherwise be hidden.\njQuery.Deferred.exceptionHook = function( error, asyncError ) {\n\n\t// Support: IE 8 - 9 only\n\t// Console exists when dev tools are open, which can happen at any time\n\tif ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {\n\t\twindow.console.warn( \"jQuery.Deferred exception: \" + error.message,\n\t\t\terror.stack, asyncError );\n\t}\n};\n\n\n\n\njQuery.readyException = function( error ) {\n\twindow.setTimeout( function() {\n\t\tthrow error;\n\t} );\n};\n\n\n\n\n// The deferred used on DOM ready\nvar readyList = jQuery.Deferred();\n\njQuery.fn.ready = function( fn ) {\n\n\treadyList\n\t\t.then( fn )\n\n\t\t// Wrap jQuery.readyException in a function so that the lookup\n\t\t// happens at the time of error handling instead of callback\n\t\t// registration.\n\t\t.catch( function( error ) {\n\t\t\tjQuery.readyException( error );\n\t\t} );\n\n\treturn this;\n};\n\njQuery.extend( {\n\n\t// Is the DOM ready to be used? Set to true once it occurs.\n\tisReady: false,\n\n\t// A counter to track how many items to wait for before\n\t// the ready event fires. See trac-6781\n\treadyWait: 1,\n\n\t// Handle when the DOM is ready\n\tready: function( wait ) {\n\n\t\t// Abort if there are pending holds or we're already ready\n\t\tif ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Remember that the DOM is ready\n\t\tjQuery.isReady = true;\n\n\t\t// If a normal DOM Ready event fired, decrement, and wait if need be\n\t\tif ( wait !== true && --jQuery.readyWait > 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If there are functions bound, to execute\n\t\treadyList.resolveWith( document, [ jQuery ] );\n\t}\n} );\n\njQuery.ready.then = readyList.then;\n\n// The ready event handler and self cleanup method\nfunction completed() {\n\tdocument.removeEventListener( \"DOMContentLoaded\", completed );\n\twindow.removeEventListener( \"load\", completed );\n\tjQuery.ready();\n}\n\n// Catch cases where $(document).ready() is called\n// after the browser event has already occurred.\n// Support: IE <=9 - 10 only\n// Older IE sometimes signals \"interactive\" too soon\nif ( document.readyState === \"complete\" ||\n\t( document.readyState !== \"loading\" && !document.documentElement.doScroll ) ) {\n\n\t// Handle it asynchronously to allow scripts the opportunity to delay ready\n\twindow.setTimeout( jQuery.ready );\n\n} else {\n\n\t// Use the handy event callback\n\tdocument.addEventListener( \"DOMContentLoaded\", completed );\n\n\t// A fallback to window.onload, that will always work\n\twindow.addEventListener( \"load\", completed );\n}\n\n\n\n\n// Multifunctional method to get and set values of a collection\n// The value/s can optionally be executed if it's a function\nvar access = function( elems, fn, key, value, chainable, emptyGet, raw ) {\n\tvar i = 0,\n\t\tlen = elems.length,\n\t\tbulk = key == null;\n\n\t// Sets many values\n\tif ( toType( key ) === \"object\" ) {\n\t\tchainable = true;\n\t\tfor ( i in key ) {\n\t\t\taccess( elems, fn, i, key[ i ], true, emptyGet, raw );\n\t\t}\n\n\t// Sets one value\n\t} else if ( value !== undefined ) {\n\t\tchainable = true;\n\n\t\tif ( !isFunction( value ) ) {\n\t\t\traw = true;\n\t\t}\n\n\t\tif ( bulk ) {\n\n\t\t\t// Bulk operations run against the entire set\n\t\t\tif ( raw ) {\n\t\t\t\tfn.call( elems, value );\n\t\t\t\tfn = null;\n\n\t\t\t// ...except when executing function values\n\t\t\t} else {\n\t\t\t\tbulk = fn;\n\t\t\t\tfn = function( elem, _key, value ) {\n\t\t\t\t\treturn bulk.call( jQuery( elem ), value );\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\n\t\tif ( fn ) {\n\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\tfn(\n\t\t\t\t\telems[ i ], key, raw ?\n\t\t\t\t\t\tvalue :\n\t\t\t\t\t\tvalue.call( elems[ i ], i, fn( elems[ i ], key ) )\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( chainable ) {\n\t\treturn elems;\n\t}\n\n\t// Gets\n\tif ( bulk ) {\n\t\treturn fn.call( elems );\n\t}\n\n\treturn len ? fn( elems[ 0 ], key ) : emptyGet;\n};\n\n\n// Matches dashed string for camelizing\nvar rmsPrefix = /^-ms-/,\n\trdashAlpha = /-([a-z])/g;\n\n// Used by camelCase as callback to replace()\nfunction fcamelCase( _all, letter ) {\n\treturn letter.toUpperCase();\n}\n\n// Convert dashed to camelCase; used by the css and data modules\n// Support: IE <=9 - 11, Edge 12 - 15\n// Microsoft forgot to hump their vendor prefix (trac-9572)\nfunction camelCase( string ) {\n\treturn string.replace( rmsPrefix, \"ms-\" ).replace( rdashAlpha, fcamelCase );\n}\nvar acceptData = function( owner ) {\n\n\t// Accepts only:\n\t//  - Node\n\t//    - Node.ELEMENT_NODE\n\t//    - Node.DOCUMENT_NODE\n\t//  - Object\n\t//    - Any\n\treturn owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );\n};\n\n\n\n\nfunction Data() {\n\tthis.expando = jQuery.expando + Data.uid++;\n}\n\nData.uid = 1;\n\nData.prototype = {\n\n\tcache: function( owner ) {\n\n\t\t// Check if the owner object already has a cache\n\t\tvar value = owner[ this.expando ];\n\n\t\t// If not, create one\n\t\tif ( !value ) {\n\t\t\tvalue = {};\n\n\t\t\t// We can accept data for non-element nodes in modern browsers,\n\t\t\t// but we should not, see trac-8335.\n\t\t\t// Always return an empty object.\n\t\t\tif ( acceptData( owner ) ) {\n\n\t\t\t\t// If it is a node unlikely to be stringify-ed or looped over\n\t\t\t\t// use plain assignment\n\t\t\t\tif ( owner.nodeType ) {\n\t\t\t\t\towner[ this.expando ] = value;\n\n\t\t\t\t// Otherwise secure it in a non-enumerable property\n\t\t\t\t// configurable must be true to allow the property to be\n\t\t\t\t// deleted when data is removed\n\t\t\t\t} else {\n\t\t\t\t\tObject.defineProperty( owner, this.expando, {\n\t\t\t\t\t\tvalue: value,\n\t\t\t\t\t\tconfigurable: true\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn value;\n\t},\n\tset: function( owner, data, value ) {\n\t\tvar prop,\n\t\t\tcache = this.cache( owner );\n\n\t\t// Handle: [ owner, key, value ] args\n\t\t// Always use camelCase key (gh-2257)\n\t\tif ( typeof data === \"string\" ) {\n\t\t\tcache[ camelCase( data ) ] = value;\n\n\t\t// Handle: [ owner, { properties } ] args\n\t\t} else {\n\n\t\t\t// Copy the properties one-by-one to the cache object\n\t\t\tfor ( prop in data ) {\n\t\t\t\tcache[ camelCase( prop ) ] = data[ prop ];\n\t\t\t}\n\t\t}\n\t\treturn cache;\n\t},\n\tget: function( owner, key ) {\n\t\treturn key === undefined ?\n\t\t\tthis.cache( owner ) :\n\n\t\t\t// Always use camelCase key (gh-2257)\n\t\t\towner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];\n\t},\n\taccess: function( owner, key, value ) {\n\n\t\t// In cases where either:\n\t\t//\n\t\t//   1. No key was specified\n\t\t//   2. A string key was specified, but no value provided\n\t\t//\n\t\t// Take the \"read\" path and allow the get method to determine\n\t\t// which value to return, respectively either:\n\t\t//\n\t\t//   1. The entire cache object\n\t\t//   2. The data stored at the key\n\t\t//\n\t\tif ( key === undefined ||\n\t\t\t\t( ( key && typeof key === \"string\" ) && value === undefined ) ) {\n\n\t\t\treturn this.get( owner, key );\n\t\t}\n\n\t\t// When the key is not a string, or both a key and value\n\t\t// are specified, set or extend (existing objects) with either:\n\t\t//\n\t\t//   1. An object of properties\n\t\t//   2. A key and value\n\t\t//\n\t\tthis.set( owner, key, value );\n\n\t\t// Since the \"set\" path can have two possible entry points\n\t\t// return the expected data based on which path was taken[*]\n\t\treturn value !== undefined ? value : key;\n\t},\n\tremove: function( owner, key ) {\n\t\tvar i,\n\t\t\tcache = owner[ this.expando ];\n\n\t\tif ( cache === undefined ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( key !== undefined ) {\n\n\t\t\t// Support array or space separated string of keys\n\t\t\tif ( Array.isArray( key ) ) {\n\n\t\t\t\t// If key is an array of keys...\n\t\t\t\t// We always set camelCase keys, so remove that.\n\t\t\t\tkey = key.map( camelCase );\n\t\t\t} else {\n\t\t\t\tkey = camelCase( key );\n\n\t\t\t\t// If a key with the spaces exists, use it.\n\t\t\t\t// Otherwise, create an array by matching non-whitespace\n\t\t\t\tkey = key in cache ?\n\t\t\t\t\t[ key ] :\n\t\t\t\t\t( key.match( rnothtmlwhite ) || [] );\n\t\t\t}\n\n\t\t\ti = key.length;\n\n\t\t\twhile ( i-- ) {\n\t\t\t\tdelete cache[ key[ i ] ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove the expando if there's no more data\n\t\tif ( key === undefined || jQuery.isEmptyObject( cache ) ) {\n\n\t\t\t// Support: Chrome <=35 - 45\n\t\t\t// Webkit & Blink performance suffers when deleting properties\n\t\t\t// from DOM nodes, so set to undefined instead\n\t\t\t// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n\t\t\tif ( owner.nodeType ) {\n\t\t\t\towner[ this.expando ] = undefined;\n\t\t\t} else {\n\t\t\t\tdelete owner[ this.expando ];\n\t\t\t}\n\t\t}\n\t},\n\thasData: function( owner ) {\n\t\tvar cache = owner[ this.expando ];\n\t\treturn cache !== undefined && !jQuery.isEmptyObject( cache );\n\t}\n};\nvar dataPriv = new Data();\n\nvar dataUser = new Data();\n\n\n\n//\tImplementation Summary\n//\n//\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n//\t2. Improve the module's maintainability by reducing the storage\n//\t\tpaths to a single mechanism.\n//\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n//\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n//\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n//\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n\nvar rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/,\n\trmultiDash = /[A-Z]/g;\n\nfunction getData( data ) {\n\tif ( data === \"true\" ) {\n\t\treturn true;\n\t}\n\n\tif ( data === \"false\" ) {\n\t\treturn false;\n\t}\n\n\tif ( data === \"null\" ) {\n\t\treturn null;\n\t}\n\n\t// Only convert to a number if it doesn't change the string\n\tif ( data === +data + \"\" ) {\n\t\treturn +data;\n\t}\n\n\tif ( rbrace.test( data ) ) {\n\t\treturn JSON.parse( data );\n\t}\n\n\treturn data;\n}\n\nfunction dataAttr( elem, key, data ) {\n\tvar name;\n\n\t// If nothing was found internally, try to fetch any\n\t// data from the HTML5 data-* attribute\n\tif ( data === undefined && elem.nodeType === 1 ) {\n\t\tname = \"data-\" + key.replace( rmultiDash, \"-$&\" ).toLowerCase();\n\t\tdata = elem.getAttribute( name );\n\n\t\tif ( typeof data === \"string\" ) {\n\t\t\ttry {\n\t\t\t\tdata = getData( data );\n\t\t\t} catch ( e ) {}\n\n\t\t\t// Make sure we set the data so it isn't changed later\n\t\t\tdataUser.set( elem, key, data );\n\t\t} else {\n\t\t\tdata = undefined;\n\t\t}\n\t}\n\treturn data;\n}\n\njQuery.extend( {\n\thasData: function( elem ) {\n\t\treturn dataUser.hasData( elem ) || dataPriv.hasData( elem );\n\t},\n\n\tdata: function( elem, name, data ) {\n\t\treturn dataUser.access( elem, name, data );\n\t},\n\n\tremoveData: function( elem, name ) {\n\t\tdataUser.remove( elem, name );\n\t},\n\n\t// TODO: Now that all calls to _data and _removeData have been replaced\n\t// with direct calls to dataPriv methods, these can be deprecated.\n\t_data: function( elem, name, data ) {\n\t\treturn dataPriv.access( elem, name, data );\n\t},\n\n\t_removeData: function( elem, name ) {\n\t\tdataPriv.remove( elem, name );\n\t}\n} );\n\njQuery.fn.extend( {\n\tdata: function( key, value ) {\n\t\tvar i, name, data,\n\t\t\telem = this[ 0 ],\n\t\t\tattrs = elem && elem.attributes;\n\n\t\t// Gets all values\n\t\tif ( key === undefined ) {\n\t\t\tif ( this.length ) {\n\t\t\t\tdata = dataUser.get( elem );\n\n\t\t\t\tif ( elem.nodeType === 1 && !dataPriv.get( elem, \"hasDataAttrs\" ) ) {\n\t\t\t\t\ti = attrs.length;\n\t\t\t\t\twhile ( i-- ) {\n\n\t\t\t\t\t\t// Support: IE 11 only\n\t\t\t\t\t\t// The attrs elements can be null (trac-14894)\n\t\t\t\t\t\tif ( attrs[ i ] ) {\n\t\t\t\t\t\t\tname = attrs[ i ].name;\n\t\t\t\t\t\t\tif ( name.indexOf( \"data-\" ) === 0 ) {\n\t\t\t\t\t\t\t\tname = camelCase( name.slice( 5 ) );\n\t\t\t\t\t\t\t\tdataAttr( elem, name, data[ name ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tdataPriv.set( elem, \"hasDataAttrs\", true );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn data;\n\t\t}\n\n\t\t// Sets multiple values\n\t\tif ( typeof key === \"object\" ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tdataUser.set( this, key );\n\t\t\t} );\n\t\t}\n\n\t\treturn access( this, function( value ) {\n\t\t\tvar data;\n\n\t\t\t// The calling jQuery object (element matches) is not empty\n\t\t\t// (and therefore has an element appears at this[ 0 ]) and the\n\t\t\t// `value` parameter was not undefined. An empty jQuery object\n\t\t\t// will result in `undefined` for elem = this[ 0 ] which will\n\t\t\t// throw an exception if an attempt to read a data cache is made.\n\t\t\tif ( elem && value === undefined ) {\n\n\t\t\t\t// Attempt to get data from the cache\n\t\t\t\t// The key will always be camelCased in Data\n\t\t\t\tdata = dataUser.get( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// Attempt to \"discover\" the data in\n\t\t\t\t// HTML5 custom data-* attrs\n\t\t\t\tdata = dataAttr( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// We tried really hard, but the data doesn't exist.\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Set the data...\n\t\t\tthis.each( function() {\n\n\t\t\t\t// We always store the camelCased key\n\t\t\t\tdataUser.set( this, key, value );\n\t\t\t} );\n\t\t}, null, value, arguments.length > 1, null, true );\n\t},\n\n\tremoveData: function( key ) {\n\t\treturn this.each( function() {\n\t\t\tdataUser.remove( this, key );\n\t\t} );\n\t}\n} );\n\n\njQuery.extend( {\n\tqueue: function( elem, type, data ) {\n\t\tvar queue;\n\n\t\tif ( elem ) {\n\t\t\ttype = ( type || \"fx\" ) + \"queue\";\n\t\t\tqueue = dataPriv.get( elem, type );\n\n\t\t\t// Speed up dequeue by getting out quickly if this is just a lookup\n\t\t\tif ( data ) {\n\t\t\t\tif ( !queue || Array.isArray( data ) ) {\n\t\t\t\t\tqueue = dataPriv.access( elem, type, jQuery.makeArray( data ) );\n\t\t\t\t} else {\n\t\t\t\t\tqueue.push( data );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn queue || [];\n\t\t}\n\t},\n\n\tdequeue: function( elem, type ) {\n\t\ttype = type || \"fx\";\n\n\t\tvar queue = jQuery.queue( elem, type ),\n\t\t\tstartLength = queue.length,\n\t\t\tfn = queue.shift(),\n\t\t\thooks = jQuery._queueHooks( elem, type ),\n\t\t\tnext = function() {\n\t\t\t\tjQuery.dequeue( elem, type );\n\t\t\t};\n\n\t\t// If the fx queue is dequeued, always remove the progress sentinel\n\t\tif ( fn === \"inprogress\" ) {\n\t\t\tfn = queue.shift();\n\t\t\tstartLength--;\n\t\t}\n\n\t\tif ( fn ) {\n\n\t\t\t// Add a progress sentinel to prevent the fx queue from being\n\t\t\t// automatically dequeued\n\t\t\tif ( type === \"fx\" ) {\n\t\t\t\tqueue.unshift( \"inprogress\" );\n\t\t\t}\n\n\t\t\t// Clear up the last queue stop function\n\t\t\tdelete hooks.stop;\n\t\t\tfn.call( elem, next, hooks );\n\t\t}\n\n\t\tif ( !startLength && hooks ) {\n\t\t\thooks.empty.fire();\n\t\t}\n\t},\n\n\t// Not public - generate a queueHooks object, or return the current one\n\t_queueHooks: function( elem, type ) {\n\t\tvar key = type + \"queueHooks\";\n\t\treturn dataPriv.get( elem, key ) || dataPriv.access( elem, key, {\n\t\t\tempty: jQuery.Callbacks( \"once memory\" ).add( function() {\n\t\t\t\tdataPriv.remove( elem, [ type + \"queue\", key ] );\n\t\t\t} )\n\t\t} );\n\t}\n} );\n\njQuery.fn.extend( {\n\tqueue: function( type, data ) {\n\t\tvar setter = 2;\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tdata = type;\n\t\t\ttype = \"fx\";\n\t\t\tsetter--;\n\t\t}\n\n\t\tif ( arguments.length < setter ) {\n\t\t\treturn jQuery.queue( this[ 0 ], type );\n\t\t}\n\n\t\treturn data === undefined ?\n\t\t\tthis :\n\t\t\tthis.each( function() {\n\t\t\t\tvar queue = jQuery.queue( this, type, data );\n\n\t\t\t\t// Ensure a hooks for this queue\n\t\t\t\tjQuery._queueHooks( this, type );\n\n\t\t\t\tif ( type === \"fx\" && queue[ 0 ] !== \"inprogress\" ) {\n\t\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t\t}\n\t\t\t} );\n\t},\n\tdequeue: function( type ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.dequeue( this, type );\n\t\t} );\n\t},\n\tclearQueue: function( type ) {\n\t\treturn this.queue( type || \"fx\", [] );\n\t},\n\n\t// Get a promise resolved when queues of a certain type\n\t// are emptied (fx is the type by default)\n\tpromise: function( type, obj ) {\n\t\tvar tmp,\n\t\t\tcount = 1,\n\t\t\tdefer = jQuery.Deferred(),\n\t\t\telements = this,\n\t\t\ti = this.length,\n\t\t\tresolve = function() {\n\t\t\t\tif ( !( --count ) ) {\n\t\t\t\t\tdefer.resolveWith( elements, [ elements ] );\n\t\t\t\t}\n\t\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tobj = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\ttype = type || \"fx\";\n\n\t\twhile ( i-- ) {\n\t\t\ttmp = dataPriv.get( elements[ i ], type + \"queueHooks\" );\n\t\t\tif ( tmp && tmp.empty ) {\n\t\t\t\tcount++;\n\t\t\t\ttmp.empty.add( resolve );\n\t\t\t}\n\t\t}\n\t\tresolve();\n\t\treturn defer.promise( obj );\n\t}\n} );\nvar pnum = ( /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/ ).source;\n\nvar rcssNum = new RegExp( \"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\" );\n\n\nvar cssExpand = [ \"Top\", \"Right\", \"Bottom\", \"Left\" ];\n\nvar documentElement = document.documentElement;\n\n\n\n\tvar isAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem );\n\t\t},\n\t\tcomposed = { composed: true };\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only\n\t// Check attachment across shadow DOM boundaries when possible (gh-3504)\n\t// Support: iOS 10.0-10.2 only\n\t// Early iOS 10 versions support `attachShadow` but not `getRootNode`,\n\t// leading to errors. We need to check for `getRootNode`.\n\tif ( documentElement.getRootNode ) {\n\t\tisAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem ) ||\n\t\t\t\telem.getRootNode( composed ) === elem.ownerDocument;\n\t\t};\n\t}\nvar isHiddenWithinTree = function( elem, el ) {\n\n\t\t// isHiddenWithinTree might be called from jQuery#filter function;\n\t\t// in that case, element will be second argument\n\t\telem = el || elem;\n\n\t\t// Inline style trumps all\n\t\treturn elem.style.display === \"none\" ||\n\t\t\telem.style.display === \"\" &&\n\n\t\t\t// Otherwise, check computed style\n\t\t\t// Support: Firefox <=43 - 45\n\t\t\t// Disconnected elements can have computed display: none, so first confirm that elem is\n\t\t\t// in the document.\n\t\t\tisAttached( elem ) &&\n\n\t\t\tjQuery.css( elem, \"display\" ) === \"none\";\n\t};\n\n\n\nfunction adjustCSS( elem, prop, valueParts, tween ) {\n\tvar adjusted, scale,\n\t\tmaxIterations = 20,\n\t\tcurrentValue = tween ?\n\t\t\tfunction() {\n\t\t\t\treturn tween.cur();\n\t\t\t} :\n\t\t\tfunction() {\n\t\t\t\treturn jQuery.css( elem, prop, \"\" );\n\t\t\t},\n\t\tinitial = currentValue(),\n\t\tunit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" ),\n\n\t\t// Starting value computation is required for potential unit mismatches\n\t\tinitialInUnit = elem.nodeType &&\n\t\t\t( jQuery.cssNumber[ prop ] || unit !== \"px\" && +initial ) &&\n\t\t\trcssNum.exec( jQuery.css( elem, prop ) );\n\n\tif ( initialInUnit && initialInUnit[ 3 ] !== unit ) {\n\n\t\t// Support: Firefox <=54\n\t\t// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n\t\tinitial = initial / 2;\n\n\t\t// Trust units reported by jQuery.css\n\t\tunit = unit || initialInUnit[ 3 ];\n\n\t\t// Iteratively approximate from a nonzero starting point\n\t\tinitialInUnit = +initial || 1;\n\n\t\twhile ( maxIterations-- ) {\n\n\t\t\t// Evaluate and update our best guess (doubling guesses that zero out).\n\t\t\t// Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n\t\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\t\t\tif ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {\n\t\t\t\tmaxIterations = 0;\n\t\t\t}\n\t\t\tinitialInUnit = initialInUnit / scale;\n\n\t\t}\n\n\t\tinitialInUnit = initialInUnit * 2;\n\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\n\t\t// Make sure we update the tween properties later on\n\t\tvalueParts = valueParts || [];\n\t}\n\n\tif ( valueParts ) {\n\t\tinitialInUnit = +initialInUnit || +initial || 0;\n\n\t\t// Apply relative offset (+=/-=) if specified\n\t\tadjusted = valueParts[ 1 ] ?\n\t\t\tinitialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :\n\t\t\t+valueParts[ 2 ];\n\t\tif ( tween ) {\n\t\t\ttween.unit = unit;\n\t\t\ttween.start = initialInUnit;\n\t\t\ttween.end = adjusted;\n\t\t}\n\t}\n\treturn adjusted;\n}\n\n\nvar defaultDisplayMap = {};\n\nfunction getDefaultDisplay( elem ) {\n\tvar temp,\n\t\tdoc = elem.ownerDocument,\n\t\tnodeName = elem.nodeName,\n\t\tdisplay = defaultDisplayMap[ nodeName ];\n\n\tif ( display ) {\n\t\treturn display;\n\t}\n\n\ttemp = doc.body.appendChild( doc.createElement( nodeName ) );\n\tdisplay = jQuery.css( temp, \"display\" );\n\n\ttemp.parentNode.removeChild( temp );\n\n\tif ( display === \"none\" ) {\n\t\tdisplay = \"block\";\n\t}\n\tdefaultDisplayMap[ nodeName ] = display;\n\n\treturn display;\n}\n\nfunction showHide( elements, show ) {\n\tvar display, elem,\n\t\tvalues = [],\n\t\tindex = 0,\n\t\tlength = elements.length;\n\n\t// Determine new display value for elements that need to change\n\tfor ( ; index < length; index++ ) {\n\t\telem = elements[ index ];\n\t\tif ( !elem.style ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tdisplay = elem.style.display;\n\t\tif ( show ) {\n\n\t\t\t// Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n\t\t\t// check is required in this first loop unless we have a nonempty display value (either\n\t\t\t// inline or about-to-be-restored)\n\t\t\tif ( display === \"none\" ) {\n\t\t\t\tvalues[ index ] = dataPriv.get( elem, \"display\" ) || null;\n\t\t\t\tif ( !values[ index ] ) {\n\t\t\t\t\telem.style.display = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t\tif ( elem.style.display === \"\" && isHiddenWithinTree( elem ) ) {\n\t\t\t\tvalues[ index ] = getDefaultDisplay( elem );\n\t\t\t}\n\t\t} else {\n\t\t\tif ( display !== \"none\" ) {\n\t\t\t\tvalues[ index ] = \"none\";\n\n\t\t\t\t// Remember what we're overwriting\n\t\t\t\tdataPriv.set( elem, \"display\", display );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Set the display of the elements in a second loop to avoid constant reflow\n\tfor ( index = 0; index < length; index++ ) {\n\t\tif ( values[ index ] != null ) {\n\t\t\telements[ index ].style.display = values[ index ];\n\t\t}\n\t}\n\n\treturn elements;\n}\n\njQuery.fn.extend( {\n\tshow: function() {\n\t\treturn showHide( this, true );\n\t},\n\thide: function() {\n\t\treturn showHide( this );\n\t},\n\ttoggle: function( state ) {\n\t\tif ( typeof state === \"boolean\" ) {\n\t\t\treturn state ? this.show() : this.hide();\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tif ( isHiddenWithinTree( this ) ) {\n\t\t\t\tjQuery( this ).show();\n\t\t\t} else {\n\t\t\t\tjQuery( this ).hide();\n\t\t\t}\n\t\t} );\n\t}\n} );\nvar rcheckableType = ( /^(?:checkbox|radio)$/i );\n\nvar rtagName = ( /<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)/i );\n\nvar rscriptType = ( /^$|^module$|\\/(?:java|ecma)script/i );\n\n\n\n( function() {\n\tvar fragment = document.createDocumentFragment(),\n\t\tdiv = fragment.appendChild( document.createElement( \"div\" ) ),\n\t\tinput = document.createElement( \"input\" );\n\n\t// Support: Android 4.0 - 4.3 only\n\t// Check state lost if the name is set (trac-11217)\n\t// Support: Windows Web Apps (WWA)\n\t// `name` and `type` must use .setAttribute for WWA (trac-14901)\n\tinput.setAttribute( \"type\", \"radio\" );\n\tinput.setAttribute( \"checked\", \"checked\" );\n\tinput.setAttribute( \"name\", \"t\" );\n\n\tdiv.appendChild( input );\n\n\t// Support: Android <=4.1 only\n\t// Older WebKit doesn't clone checked state correctly in fragments\n\tsupport.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;\n\n\t// Support: IE <=11 only\n\t// Make sure textarea (and checkbox) defaultValue is properly cloned\n\tdiv.innerHTML = \"<textarea>x</textarea>\";\n\tsupport.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;\n\n\t// Support: IE <=9 only\n\t// IE <=9 replaces <option> tags with their contents when inserted outside of\n\t// the select element.\n\tdiv.innerHTML = \"<option></option>\";\n\tsupport.option = !!div.lastChild;\n} )();\n\n\n// We have to close these tags to support XHTML (trac-13200)\nvar wrapMap = {\n\n\t// XHTML parsers do not magically insert elements in the\n\t// same way that tag soup parsers do. So we cannot shorten\n\t// this by omitting <tbody> or other required elements.\n\tthead: [ 1, \"<table>\", \"</table>\" ],\n\tcol: [ 2, \"<table><colgroup>\", \"</colgroup></table>\" ],\n\ttr: [ 2, \"<table><tbody>\", \"</tbody></table>\" ],\n\ttd: [ 3, \"<table><tbody><tr>\", \"</tr></tbody></table>\" ],\n\n\t_default: [ 0, \"\", \"\" ]\n};\n\nwrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\nwrapMap.th = wrapMap.td;\n\n// Support: IE <=9 only\nif ( !support.option ) {\n\twrapMap.optgroup = wrapMap.option = [ 1, \"<select multiple='multiple'>\", \"</select>\" ];\n}\n\n\nfunction getAll( context, tag ) {\n\n\t// Support: IE <=9 - 11 only\n\t// Use typeof to avoid zero-argument method invocation on host objects (trac-15151)\n\tvar ret;\n\n\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\tret = context.getElementsByTagName( tag || \"*\" );\n\n\t} else if ( typeof context.querySelectorAll !== \"undefined\" ) {\n\t\tret = context.querySelectorAll( tag || \"*\" );\n\n\t} else {\n\t\tret = [];\n\t}\n\n\tif ( tag === undefined || tag && nodeName( context, tag ) ) {\n\t\treturn jQuery.merge( [ context ], ret );\n\t}\n\n\treturn ret;\n}\n\n\n// Mark scripts as having already been evaluated\nfunction setGlobalEval( elems, refElements ) {\n\tvar i = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\tdataPriv.set(\n\t\t\telems[ i ],\n\t\t\t\"globalEval\",\n\t\t\t!refElements || dataPriv.get( refElements[ i ], \"globalEval\" )\n\t\t);\n\t}\n}\n\n\nvar rhtml = /<|&#?\\w+;/;\n\nfunction buildFragment( elems, context, scripts, selection, ignored ) {\n\tvar elem, tmp, tag, wrap, attached, j,\n\t\tfragment = context.createDocumentFragment(),\n\t\tnodes = [],\n\t\ti = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\telem = elems[ i ];\n\n\t\tif ( elem || elem === 0 ) {\n\n\t\t\t// Add nodes directly\n\t\t\tif ( toType( elem ) === \"object\" ) {\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );\n\n\t\t\t// Convert non-html into a text node\n\t\t\t} else if ( !rhtml.test( elem ) ) {\n\t\t\t\tnodes.push( context.createTextNode( elem ) );\n\n\t\t\t// Convert html into DOM nodes\n\t\t\t} else {\n\t\t\t\ttmp = tmp || fragment.appendChild( context.createElement( \"div\" ) );\n\n\t\t\t\t// Deserialize a standard representation\n\t\t\t\ttag = ( rtagName.exec( elem ) || [ \"\", \"\" ] )[ 1 ].toLowerCase();\n\t\t\t\twrap = wrapMap[ tag ] || wrapMap._default;\n\t\t\t\ttmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];\n\n\t\t\t\t// Descend through wrappers to the right content\n\t\t\t\tj = wrap[ 0 ];\n\t\t\t\twhile ( j-- ) {\n\t\t\t\t\ttmp = tmp.lastChild;\n\t\t\t\t}\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, tmp.childNodes );\n\n\t\t\t\t// Remember the top-level container\n\t\t\t\ttmp = fragment.firstChild;\n\n\t\t\t\t// Ensure the created nodes are orphaned (trac-12392)\n\t\t\t\ttmp.textContent = \"\";\n\t\t\t}\n\t\t}\n\t}\n\n\t// Remove wrapper from fragment\n\tfragment.textContent = \"\";\n\n\ti = 0;\n\twhile ( ( elem = nodes[ i++ ] ) ) {\n\n\t\t// Skip elements already in the context collection (trac-4087)\n\t\tif ( selection && jQuery.inArray( elem, selection ) > -1 ) {\n\t\t\tif ( ignored ) {\n\t\t\t\tignored.push( elem );\n\t\t\t}\n\t\t\tcontinue;\n\t\t}\n\n\t\tattached = isAttached( elem );\n\n\t\t// Append to fragment\n\t\ttmp = getAll( fragment.appendChild( elem ), \"script\" );\n\n\t\t// Preserve script evaluation history\n\t\tif ( attached ) {\n\t\t\tsetGlobalEval( tmp );\n\t\t}\n\n\t\t// Capture executables\n\t\tif ( scripts ) {\n\t\t\tj = 0;\n\t\t\twhile ( ( elem = tmp[ j++ ] ) ) {\n\t\t\t\tif ( rscriptType.test( elem.type || \"\" ) ) {\n\t\t\t\t\tscripts.push( elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn fragment;\n}\n\n\nvar rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n\nfunction returnTrue() {\n\treturn true;\n}\n\nfunction returnFalse() {\n\treturn false;\n}\n\nfunction on( elem, types, selector, data, fn, one ) {\n\tvar origFn, type;\n\n\t// Types can be a map of types/handlers\n\tif ( typeof types === \"object\" ) {\n\n\t\t// ( types-Object, selector, data )\n\t\tif ( typeof selector !== \"string\" ) {\n\n\t\t\t// ( types-Object, data )\n\t\t\tdata = data || selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tfor ( type in types ) {\n\t\t\ton( elem, type, selector, data, types[ type ], one );\n\t\t}\n\t\treturn elem;\n\t}\n\n\tif ( data == null && fn == null ) {\n\n\t\t// ( types, fn )\n\t\tfn = selector;\n\t\tdata = selector = undefined;\n\t} else if ( fn == null ) {\n\t\tif ( typeof selector === \"string\" ) {\n\n\t\t\t// ( types, selector, fn )\n\t\t\tfn = data;\n\t\t\tdata = undefined;\n\t\t} else {\n\n\t\t\t// ( types, data, fn )\n\t\t\tfn = data;\n\t\t\tdata = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t}\n\tif ( fn === false ) {\n\t\tfn = returnFalse;\n\t} else if ( !fn ) {\n\t\treturn elem;\n\t}\n\n\tif ( one === 1 ) {\n\t\torigFn = fn;\n\t\tfn = function( event ) {\n\n\t\t\t// Can use an empty set, since event contains the info\n\t\t\tjQuery().off( event );\n\t\t\treturn origFn.apply( this, arguments );\n\t\t};\n\n\t\t// Use same guid so caller can remove using origFn\n\t\tfn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );\n\t}\n\treturn elem.each( function() {\n\t\tjQuery.event.add( this, types, fn, data, selector );\n\t} );\n}\n\n/*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */\njQuery.event = {\n\n\tglobal: {},\n\n\tadd: function( elem, types, handler, data, selector ) {\n\n\t\tvar handleObjIn, eventHandle, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.get( elem );\n\n\t\t// Only attach events to objects that accept data\n\t\tif ( !acceptData( elem ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Caller can pass in an object of custom data in lieu of the handler\n\t\tif ( handler.handler ) {\n\t\t\thandleObjIn = handler;\n\t\t\thandler = handleObjIn.handler;\n\t\t\tselector = handleObjIn.selector;\n\t\t}\n\n\t\t// Ensure that invalid selectors throw exceptions at attach time\n\t\t// Evaluate against documentElement in case elem is a non-element node (e.g., document)\n\t\tif ( selector ) {\n\t\t\tjQuery.find.matchesSelector( documentElement, selector );\n\t\t}\n\n\t\t// Make sure that the handler has a unique ID, used to find/remove it later\n\t\tif ( !handler.guid ) {\n\t\t\thandler.guid = jQuery.guid++;\n\t\t}\n\n\t\t// Init the element's event structure and main handler, if this is the first\n\t\tif ( !( events = elemData.events ) ) {\n\t\t\tevents = elemData.events = Object.create( null );\n\t\t}\n\t\tif ( !( eventHandle = elemData.handle ) ) {\n\t\t\teventHandle = elemData.handle = function( e ) {\n\n\t\t\t\t// Discard the second event of a jQuery.event.trigger() and\n\t\t\t\t// when an event is called after a page has unloaded\n\t\t\t\treturn typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ?\n\t\t\t\t\tjQuery.event.dispatch.apply( elem, arguments ) : undefined;\n\t\t\t};\n\t\t}\n\n\t\t// Handle multiple events separated by a space\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// There *must* be a type, no attaching namespace-only handlers\n\t\t\tif ( !type ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If event changes its type, use the special event handlers for the changed type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// If selector defined, determine special event api type, otherwise given type\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\n\t\t\t// Update special based on newly reset type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// handleObj is passed to all event handlers\n\t\t\thandleObj = jQuery.extend( {\n\t\t\t\ttype: type,\n\t\t\t\torigType: origType,\n\t\t\t\tdata: data,\n\t\t\t\thandler: handler,\n\t\t\t\tguid: handler.guid,\n\t\t\t\tselector: selector,\n\t\t\t\tneedsContext: selector && jQuery.expr.match.needsContext.test( selector ),\n\t\t\t\tnamespace: namespaces.join( \".\" )\n\t\t\t}, handleObjIn );\n\n\t\t\t// Init the event handler queue if we're the first\n\t\t\tif ( !( handlers = events[ type ] ) ) {\n\t\t\t\thandlers = events[ type ] = [];\n\t\t\t\thandlers.delegateCount = 0;\n\n\t\t\t\t// Only use addEventListener if the special events handler returns false\n\t\t\t\tif ( !special.setup ||\n\t\t\t\t\tspecial.setup.call( elem, data, namespaces, eventHandle ) === false ) {\n\n\t\t\t\t\tif ( elem.addEventListener ) {\n\t\t\t\t\t\telem.addEventListener( type, eventHandle );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( special.add ) {\n\t\t\t\tspecial.add.call( elem, handleObj );\n\n\t\t\t\tif ( !handleObj.handler.guid ) {\n\t\t\t\t\thandleObj.handler.guid = handler.guid;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add to the element's handler list, delegates in front\n\t\t\tif ( selector ) {\n\t\t\t\thandlers.splice( handlers.delegateCount++, 0, handleObj );\n\t\t\t} else {\n\t\t\t\thandlers.push( handleObj );\n\t\t\t}\n\n\t\t\t// Keep track of which events have ever been used, for event optimization\n\t\t\tjQuery.event.global[ type ] = true;\n\t\t}\n\n\t},\n\n\t// Detach an event or set of events from an element\n\tremove: function( elem, types, handler, selector, mappedTypes ) {\n\n\t\tvar j, origCount, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.hasData( elem ) && dataPriv.get( elem );\n\n\t\tif ( !elemData || !( events = elemData.events ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Once for each type.namespace in types; type may be omitted\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// Unbind all events (on this namespace, if provided) for the element\n\t\t\tif ( !type ) {\n\t\t\t\tfor ( type in events ) {\n\t\t\t\t\tjQuery.event.remove( elem, type + types[ t ], handler, selector, true );\n\t\t\t\t}\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\t\t\thandlers = events[ type ] || [];\n\t\t\ttmp = tmp[ 2 ] &&\n\t\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" );\n\n\t\t\t// Remove matching events\n\t\t\torigCount = j = handlers.length;\n\t\t\twhile ( j-- ) {\n\t\t\t\thandleObj = handlers[ j ];\n\n\t\t\t\tif ( ( mappedTypes || origType === handleObj.origType ) &&\n\t\t\t\t\t( !handler || handler.guid === handleObj.guid ) &&\n\t\t\t\t\t( !tmp || tmp.test( handleObj.namespace ) ) &&\n\t\t\t\t\t( !selector || selector === handleObj.selector ||\n\t\t\t\t\t\tselector === \"**\" && handleObj.selector ) ) {\n\t\t\t\t\thandlers.splice( j, 1 );\n\n\t\t\t\t\tif ( handleObj.selector ) {\n\t\t\t\t\t\thandlers.delegateCount--;\n\t\t\t\t\t}\n\t\t\t\t\tif ( special.remove ) {\n\t\t\t\t\t\tspecial.remove.call( elem, handleObj );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Remove generic event handler if we removed something and no more handlers exist\n\t\t\t// (avoids potential for endless recursion during removal of special event handlers)\n\t\t\tif ( origCount && !handlers.length ) {\n\t\t\t\tif ( !special.teardown ||\n\t\t\t\t\tspecial.teardown.call( elem, namespaces, elemData.handle ) === false ) {\n\n\t\t\t\t\tjQuery.removeEvent( elem, type, elemData.handle );\n\t\t\t\t}\n\n\t\t\t\tdelete events[ type ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove data and the expando if it's no longer used\n\t\tif ( jQuery.isEmptyObject( events ) ) {\n\t\t\tdataPriv.remove( elem, \"handle events\" );\n\t\t}\n\t},\n\n\tdispatch: function( nativeEvent ) {\n\n\t\tvar i, j, ret, matched, handleObj, handlerQueue,\n\t\t\targs = new Array( arguments.length ),\n\n\t\t\t// Make a writable jQuery.Event from the native event object\n\t\t\tevent = jQuery.event.fix( nativeEvent ),\n\n\t\t\thandlers = (\n\t\t\t\tdataPriv.get( this, \"events\" ) || Object.create( null )\n\t\t\t)[ event.type ] || [],\n\t\t\tspecial = jQuery.event.special[ event.type ] || {};\n\n\t\t// Use the fix-ed jQuery.Event rather than the (read-only) native event\n\t\targs[ 0 ] = event;\n\n\t\tfor ( i = 1; i < arguments.length; i++ ) {\n\t\t\targs[ i ] = arguments[ i ];\n\t\t}\n\n\t\tevent.delegateTarget = this;\n\n\t\t// Call the preDispatch hook for the mapped type, and let it bail if desired\n\t\tif ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine handlers\n\t\thandlerQueue = jQuery.event.handlers.call( this, event, handlers );\n\n\t\t// Run delegates first; they may want to stop propagation beneath us\n\t\ti = 0;\n\t\twhile ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tevent.currentTarget = matched.elem;\n\n\t\t\tj = 0;\n\t\t\twhile ( ( handleObj = matched.handlers[ j++ ] ) &&\n\t\t\t\t!event.isImmediatePropagationStopped() ) {\n\n\t\t\t\t// If the event is namespaced, then each handler is only invoked if it is\n\t\t\t\t// specially universal or its namespaces are a superset of the event's.\n\t\t\t\tif ( !event.rnamespace || handleObj.namespace === false ||\n\t\t\t\t\tevent.rnamespace.test( handleObj.namespace ) ) {\n\n\t\t\t\t\tevent.handleObj = handleObj;\n\t\t\t\t\tevent.data = handleObj.data;\n\n\t\t\t\t\tret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||\n\t\t\t\t\t\thandleObj.handler ).apply( matched.elem, args );\n\n\t\t\t\t\tif ( ret !== undefined ) {\n\t\t\t\t\t\tif ( ( event.result = ret ) === false ) {\n\t\t\t\t\t\t\tevent.preventDefault();\n\t\t\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Call the postDispatch hook for the mapped type\n\t\tif ( special.postDispatch ) {\n\t\t\tspecial.postDispatch.call( this, event );\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\thandlers: function( event, handlers ) {\n\t\tvar i, handleObj, sel, matchedHandlers, matchedSelectors,\n\t\t\thandlerQueue = [],\n\t\t\tdelegateCount = handlers.delegateCount,\n\t\t\tcur = event.target;\n\n\t\t// Find delegate handlers\n\t\tif ( delegateCount &&\n\n\t\t\t// Support: IE <=9\n\t\t\t// Black-hole SVG <use> instance trees (trac-13180)\n\t\t\tcur.nodeType &&\n\n\t\t\t// Support: Firefox <=42\n\t\t\t// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n\t\t\t// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n\t\t\t// Support: IE 11 only\n\t\t\t// ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n\t\t\t!( event.type === \"click\" && event.button >= 1 ) ) {\n\n\t\t\tfor ( ; cur !== this; cur = cur.parentNode || this ) {\n\n\t\t\t\t// Don't check non-elements (trac-13208)\n\t\t\t\t// Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)\n\t\t\t\tif ( cur.nodeType === 1 && !( event.type === \"click\" && cur.disabled === true ) ) {\n\t\t\t\t\tmatchedHandlers = [];\n\t\t\t\t\tmatchedSelectors = {};\n\t\t\t\t\tfor ( i = 0; i < delegateCount; i++ ) {\n\t\t\t\t\t\thandleObj = handlers[ i ];\n\n\t\t\t\t\t\t// Don't conflict with Object.prototype properties (trac-13203)\n\t\t\t\t\t\tsel = handleObj.selector + \" \";\n\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] === undefined ) {\n\t\t\t\t\t\t\tmatchedSelectors[ sel ] = handleObj.needsContext ?\n\t\t\t\t\t\t\t\tjQuery( sel, this ).index( cur ) > -1 :\n\t\t\t\t\t\t\t\tjQuery.find( sel, this, null, [ cur ] ).length;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] ) {\n\t\t\t\t\t\t\tmatchedHandlers.push( handleObj );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( matchedHandlers.length ) {\n\t\t\t\t\t\thandlerQueue.push( { elem: cur, handlers: matchedHandlers } );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Add the remaining (directly-bound) handlers\n\t\tcur = this;\n\t\tif ( delegateCount < handlers.length ) {\n\t\t\thandlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );\n\t\t}\n\n\t\treturn handlerQueue;\n\t},\n\n\taddProp: function( name, hook ) {\n\t\tObject.defineProperty( jQuery.Event.prototype, name, {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\n\t\t\tget: isFunction( hook ) ?\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn hook( this.originalEvent );\n\t\t\t\t\t}\n\t\t\t\t} :\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn this.originalEvent[ name ];\n\t\t\t\t\t}\n\t\t\t\t},\n\n\t\t\tset: function( value ) {\n\t\t\t\tObject.defineProperty( this, name, {\n\t\t\t\t\tenumerable: true,\n\t\t\t\t\tconfigurable: true,\n\t\t\t\t\twritable: true,\n\t\t\t\t\tvalue: value\n\t\t\t\t} );\n\t\t\t}\n\t\t} );\n\t},\n\n\tfix: function( originalEvent ) {\n\t\treturn originalEvent[ jQuery.expando ] ?\n\t\t\toriginalEvent :\n\t\t\tnew jQuery.Event( originalEvent );\n\t},\n\n\tspecial: {\n\t\tload: {\n\n\t\t\t// Prevent triggered image.load events from bubbling to window.load\n\t\t\tnoBubble: true\n\t\t},\n\t\tclick: {\n\n\t\t\t// Utilize native event to ensure correct state for checkable inputs\n\t\t\tsetup: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Claim the first handler\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\t// dataPriv.set( el, \"click\", ... )\n\t\t\t\t\tleverageNative( el, \"click\", true );\n\t\t\t\t}\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t},\n\t\t\ttrigger: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Force setup before triggering a click\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\tleverageNative( el, \"click\" );\n\t\t\t\t}\n\n\t\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\t\treturn true;\n\t\t\t},\n\n\t\t\t// For cross-browser consistency, suppress native .click() on links\n\t\t\t// Also prevent it if we're currently inside a leveraged native-event stack\n\t\t\t_default: function( event ) {\n\t\t\t\tvar target = event.target;\n\t\t\t\treturn rcheckableType.test( target.type ) &&\n\t\t\t\t\ttarget.click && nodeName( target, \"input\" ) &&\n\t\t\t\t\tdataPriv.get( target, \"click\" ) ||\n\t\t\t\t\tnodeName( target, \"a\" );\n\t\t\t}\n\t\t},\n\n\t\tbeforeunload: {\n\t\t\tpostDispatch: function( event ) {\n\n\t\t\t\t// Support: Firefox 20+\n\t\t\t\t// Firefox doesn't alert if the returnValue field is not set.\n\t\t\t\tif ( event.result !== undefined && event.originalEvent ) {\n\t\t\t\t\tevent.originalEvent.returnValue = event.result;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Ensure the presence of an event listener that handles manually-triggered\n// synthetic events by interrupting progress until reinvoked in response to\n// *native* events that it fires directly, ensuring that state changes have\n// already occurred before other listeners are invoked.\nfunction leverageNative( el, type, isSetup ) {\n\n\t// Missing `isSetup` indicates a trigger call, which must force setup through jQuery.event.add\n\tif ( !isSetup ) {\n\t\tif ( dataPriv.get( el, type ) === undefined ) {\n\t\t\tjQuery.event.add( el, type, returnTrue );\n\t\t}\n\t\treturn;\n\t}\n\n\t// Register the controller as a special universal handler for all event namespaces\n\tdataPriv.set( el, type, false );\n\tjQuery.event.add( el, type, {\n\t\tnamespace: false,\n\t\thandler: function( event ) {\n\t\t\tvar result,\n\t\t\t\tsaved = dataPriv.get( this, type );\n\n\t\t\tif ( ( event.isTrigger & 1 ) && this[ type ] ) {\n\n\t\t\t\t// Interrupt processing of the outer synthetic .trigger()ed event\n\t\t\t\tif ( !saved ) {\n\n\t\t\t\t\t// Store arguments for use when handling the inner native event\n\t\t\t\t\t// There will always be at least one argument (an event object), so this array\n\t\t\t\t\t// will not be confused with a leftover capture object.\n\t\t\t\t\tsaved = slice.call( arguments );\n\t\t\t\t\tdataPriv.set( this, type, saved );\n\n\t\t\t\t\t// Trigger the native event and capture its result\n\t\t\t\t\tthis[ type ]();\n\t\t\t\t\tresult = dataPriv.get( this, type );\n\t\t\t\t\tdataPriv.set( this, type, false );\n\n\t\t\t\t\tif ( saved !== result ) {\n\n\t\t\t\t\t\t// Cancel the outer synthetic event\n\t\t\t\t\t\tevent.stopImmediatePropagation();\n\t\t\t\t\t\tevent.preventDefault();\n\n\t\t\t\t\t\treturn result;\n\t\t\t\t\t}\n\n\t\t\t\t// If this is an inner synthetic event for an event with a bubbling surrogate\n\t\t\t\t// (focus or blur), assume that the surrogate already propagated from triggering\n\t\t\t\t// the native event and prevent that from happening again here.\n\t\t\t\t// This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the\n\t\t\t\t// bubbling surrogate propagates *after* the non-bubbling base), but that seems\n\t\t\t\t// less bad than duplication.\n\t\t\t\t} else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) {\n\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t}\n\n\t\t\t// If this is a native event triggered above, everything is now in order\n\t\t\t// Fire an inner synthetic event with the original arguments\n\t\t\t} else if ( saved ) {\n\n\t\t\t\t// ...and capture the result\n\t\t\t\tdataPriv.set( this, type, jQuery.event.trigger(\n\t\t\t\t\tsaved[ 0 ],\n\t\t\t\t\tsaved.slice( 1 ),\n\t\t\t\t\tthis\n\t\t\t\t) );\n\n\t\t\t\t// Abort handling of the native event by all jQuery handlers while allowing\n\t\t\t\t// native handlers on the same element to run. On target, this is achieved\n\t\t\t\t// by stopping immediate propagation just on the jQuery event. However,\n\t\t\t\t// the native event is re-wrapped by a jQuery one on each level of the\n\t\t\t\t// propagation so the only way to stop it for jQuery is to stop it for\n\t\t\t\t// everyone via native `stopPropagation()`. This is not a problem for\n\t\t\t\t// focus/blur which don't bubble, but it does also stop click on checkboxes\n\t\t\t\t// and radios. We accept this limitation.\n\t\t\t\tevent.stopPropagation();\n\t\t\t\tevent.isImmediatePropagationStopped = returnTrue;\n\t\t\t}\n\t\t}\n\t} );\n}\n\njQuery.removeEvent = function( elem, type, handle ) {\n\n\t// This \"if\" is needed for plain objects\n\tif ( elem.removeEventListener ) {\n\t\telem.removeEventListener( type, handle );\n\t}\n};\n\njQuery.Event = function( src, props ) {\n\n\t// Allow instantiation without the 'new' keyword\n\tif ( !( this instanceof jQuery.Event ) ) {\n\t\treturn new jQuery.Event( src, props );\n\t}\n\n\t// Event object\n\tif ( src && src.type ) {\n\t\tthis.originalEvent = src;\n\t\tthis.type = src.type;\n\n\t\t// Events bubbling up the document may have been marked as prevented\n\t\t// by a handler lower down the tree; reflect the correct value.\n\t\tthis.isDefaultPrevented = src.defaultPrevented ||\n\t\t\t\tsrc.defaultPrevented === undefined &&\n\n\t\t\t\t// Support: Android <=2.3 only\n\t\t\t\tsrc.returnValue === false ?\n\t\t\treturnTrue :\n\t\t\treturnFalse;\n\n\t\t// Create target properties\n\t\t// Support: Safari <=6 - 7 only\n\t\t// Target should not be a text node (trac-504, trac-13143)\n\t\tthis.target = ( src.target && src.target.nodeType === 3 ) ?\n\t\t\tsrc.target.parentNode :\n\t\t\tsrc.target;\n\n\t\tthis.currentTarget = src.currentTarget;\n\t\tthis.relatedTarget = src.relatedTarget;\n\n\t// Event type\n\t} else {\n\t\tthis.type = src;\n\t}\n\n\t// Put explicitly provided properties onto the event object\n\tif ( props ) {\n\t\tjQuery.extend( this, props );\n\t}\n\n\t// Create a timestamp if incoming event doesn't have one\n\tthis.timeStamp = src && src.timeStamp || Date.now();\n\n\t// Mark it as fixed\n\tthis[ jQuery.expando ] = true;\n};\n\n// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\njQuery.Event.prototype = {\n\tconstructor: jQuery.Event,\n\tisDefaultPrevented: returnFalse,\n\tisPropagationStopped: returnFalse,\n\tisImmediatePropagationStopped: returnFalse,\n\tisSimulated: false,\n\n\tpreventDefault: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isDefaultPrevented = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.preventDefault();\n\t\t}\n\t},\n\tstopPropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isPropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopPropagation();\n\t\t}\n\t},\n\tstopImmediatePropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isImmediatePropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopImmediatePropagation();\n\t\t}\n\n\t\tthis.stopPropagation();\n\t}\n};\n\n// Includes all common event props including KeyEvent and MouseEvent specific props\njQuery.each( {\n\taltKey: true,\n\tbubbles: true,\n\tcancelable: true,\n\tchangedTouches: true,\n\tctrlKey: true,\n\tdetail: true,\n\teventPhase: true,\n\tmetaKey: true,\n\tpageX: true,\n\tpageY: true,\n\tshiftKey: true,\n\tview: true,\n\t\"char\": true,\n\tcode: true,\n\tcharCode: true,\n\tkey: true,\n\tkeyCode: true,\n\tbutton: true,\n\tbuttons: true,\n\tclientX: true,\n\tclientY: true,\n\toffsetX: true,\n\toffsetY: true,\n\tpointerId: true,\n\tpointerType: true,\n\tscreenX: true,\n\tscreenY: true,\n\ttargetTouches: true,\n\ttoElement: true,\n\ttouches: true,\n\twhich: true\n}, jQuery.event.addProp );\n\njQuery.each( { focus: \"focusin\", blur: \"focusout\" }, function( type, delegateType ) {\n\n\tfunction focusMappedHandler( nativeEvent ) {\n\t\tif ( document.documentMode ) {\n\n\t\t\t// Support: IE 11+\n\t\t\t// Attach a single focusin/focusout handler on the document while someone wants\n\t\t\t// focus/blur. This is because the former are synchronous in IE while the latter\n\t\t\t// are async. In other browsers, all those handlers are invoked synchronously.\n\n\t\t\t// `handle` from private data would already wrap the event, but we need\n\t\t\t// to change the `type` here.\n\t\t\tvar handle = dataPriv.get( this, \"handle\" ),\n\t\t\t\tevent = jQuery.event.fix( nativeEvent );\n\t\t\tevent.type = nativeEvent.type === \"focusin\" ? \"focus\" : \"blur\";\n\t\t\tevent.isSimulated = true;\n\n\t\t\t// First, handle focusin/focusout\n\t\t\thandle( nativeEvent );\n\n\t\t\t// ...then, handle focus/blur\n\t\t\t//\n\t\t\t// focus/blur don't bubble while focusin/focusout do; simulate the former by only\n\t\t\t// invoking the handler at the lower level.\n\t\t\tif ( event.target === event.currentTarget ) {\n\n\t\t\t\t// The setup part calls `leverageNative`, which, in turn, calls\n\t\t\t\t// `jQuery.event.add`, so event handle will already have been set\n\t\t\t\t// by this point.\n\t\t\t\thandle( event );\n\t\t\t}\n\t\t} else {\n\n\t\t\t// For non-IE browsers, attach a single capturing handler on the document\n\t\t\t// while someone wants focusin/focusout.\n\t\t\tjQuery.event.simulate( delegateType, nativeEvent.target,\n\t\t\t\tjQuery.event.fix( nativeEvent ) );\n\t\t}\n\t}\n\n\tjQuery.event.special[ type ] = {\n\n\t\t// Utilize native event if possible so blur/focus sequence is correct\n\t\tsetup: function() {\n\n\t\t\tvar attaches;\n\n\t\t\t// Claim the first handler\n\t\t\t// dataPriv.set( this, \"focus\", ... )\n\t\t\t// dataPriv.set( this, \"blur\", ... )\n\t\t\tleverageNative( this, type, true );\n\n\t\t\tif ( document.documentMode ) {\n\n\t\t\t\t// Support: IE 9 - 11+\n\t\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\t\tattaches = dataPriv.get( this, delegateType );\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t}\n\t\t\t\tdataPriv.set( this, delegateType, ( attaches || 0 ) + 1 );\n\t\t\t} else {\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\t\ttrigger: function() {\n\n\t\t\t// Force setup before trigger\n\t\t\tleverageNative( this, type );\n\n\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\treturn true;\n\t\t},\n\n\t\tteardown: function() {\n\t\t\tvar attaches;\n\n\t\t\tif ( document.documentMode ) {\n\t\t\t\tattaches = dataPriv.get( this, delegateType ) - 1;\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t\tdataPriv.remove( this, delegateType );\n\t\t\t\t} else {\n\t\t\t\t\tdataPriv.set( this, delegateType, attaches );\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Return false to indicate standard teardown should be applied\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\n\t\t// Suppress native focus or blur if we're currently inside\n\t\t// a leveraged native-event stack\n\t\t_default: function( event ) {\n\t\t\treturn dataPriv.get( event.target, type );\n\t\t},\n\n\t\tdelegateType: delegateType\n\t};\n\n\t// Support: Firefox <=44\n\t// Firefox doesn't have focus(in | out) events\n\t// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n\t//\n\t// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n\t// focus(in | out) events fire after focus & blur events,\n\t// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n\t// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\n\t//\n\t// Support: IE 9 - 11+\n\t// To preserve relative focusin/focus & focusout/blur event order guaranteed on the 3.x branch,\n\t// attach a single handler for both events in IE.\n\tjQuery.event.special[ delegateType ] = {\n\t\tsetup: function() {\n\n\t\t\t// Handle: regular nodes (via `this.ownerDocument`), window\n\t\t\t// (via `this.document`) & document (via `this`).\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType );\n\n\t\t\t// Support: IE 9 - 11+\n\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.addEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t}\n\t\t\tdataPriv.set( dataHolder, delegateType, ( attaches || 0 ) + 1 );\n\t\t},\n\t\tteardown: function() {\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType ) - 1;\n\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.removeEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( dataHolder, delegateType );\n\t\t\t} else {\n\t\t\t\tdataPriv.set( dataHolder, delegateType, attaches );\n\t\t\t}\n\t\t}\n\t};\n} );\n\n// Create mouseenter/leave events using mouseover/out and event-time checks\n// so that event delegation works in jQuery.\n// Do the same for pointerenter/pointerleave and pointerover/pointerout\n//\n// Support: Safari 7 only\n// Safari sends mouseenter too often; see:\n// https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n// for the description of the bug (it existed in older Chrome versions as well).\njQuery.each( {\n\tmouseenter: \"mouseover\",\n\tmouseleave: \"mouseout\",\n\tpointerenter: \"pointerover\",\n\tpointerleave: \"pointerout\"\n}, function( orig, fix ) {\n\tjQuery.event.special[ orig ] = {\n\t\tdelegateType: fix,\n\t\tbindType: fix,\n\n\t\thandle: function( event ) {\n\t\t\tvar ret,\n\t\t\t\ttarget = this,\n\t\t\t\trelated = event.relatedTarget,\n\t\t\t\thandleObj = event.handleObj;\n\n\t\t\t// For mouseenter/leave call the handler if related is outside the target.\n\t\t\t// NB: No relatedTarget if the mouse left/entered the browser window\n\t\t\tif ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {\n\t\t\t\tevent.type = handleObj.origType;\n\t\t\t\tret = handleObj.handler.apply( this, arguments );\n\t\t\t\tevent.type = fix;\n\t\t\t}\n\t\t\treturn ret;\n\t\t}\n\t};\n} );\n\njQuery.fn.extend( {\n\n\ton: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn );\n\t},\n\tone: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn, 1 );\n\t},\n\toff: function( types, selector, fn ) {\n\t\tvar handleObj, type;\n\t\tif ( types && types.preventDefault && types.handleObj ) {\n\n\t\t\t// ( event )  dispatched jQuery.Event\n\t\t\thandleObj = types.handleObj;\n\t\t\tjQuery( types.delegateTarget ).off(\n\t\t\t\thandleObj.namespace ?\n\t\t\t\t\thandleObj.origType + \".\" + handleObj.namespace :\n\t\t\t\t\thandleObj.origType,\n\t\t\t\thandleObj.selector,\n\t\t\t\thandleObj.handler\n\t\t\t);\n\t\t\treturn this;\n\t\t}\n\t\tif ( typeof types === \"object\" ) {\n\n\t\t\t// ( types-object [, selector] )\n\t\t\tfor ( type in types ) {\n\t\t\t\tthis.off( type, selector, types[ type ] );\n\t\t\t}\n\t\t\treturn this;\n\t\t}\n\t\tif ( selector === false || typeof selector === \"function\" ) {\n\n\t\t\t// ( types [, fn] )\n\t\t\tfn = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tif ( fn === false ) {\n\t\t\tfn = returnFalse;\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.remove( this, types, fn, selector );\n\t\t} );\n\t}\n} );\n\n\nvar\n\n\t// Support: IE <=10 - 11, Edge 12 - 13 only\n\t// In IE/Edge using regex groups here causes severe slowdowns.\n\t// See https://connect.microsoft.com/IE/feedback/details/1736512/\n\trnoInnerhtml = /<script|<style|<link/i,\n\n\t// checked=\"checked\" or checked\n\trchecked = /checked\\s*(?:[^=]|=\\s*.checked.)/i,\n\n\trcleanScript = /^\\s*<!\\[CDATA\\[|\\]\\]>\\s*$/g;\n\n// Prefer a tbody over its parent table for containing new rows\nfunction manipulationTarget( elem, content ) {\n\tif ( nodeName( elem, \"table\" ) &&\n\t\tnodeName( content.nodeType !== 11 ? content : content.firstChild, \"tr\" ) ) {\n\n\t\treturn jQuery( elem ).children( \"tbody\" )[ 0 ] || elem;\n\t}\n\n\treturn elem;\n}\n\n// Replace/restore the type attribute of script elements for safe DOM manipulation\nfunction disableScript( elem ) {\n\telem.type = ( elem.getAttribute( \"type\" ) !== null ) + \"/\" + elem.type;\n\treturn elem;\n}\nfunction restoreScript( elem ) {\n\tif ( ( elem.type || \"\" ).slice( 0, 5 ) === \"true/\" ) {\n\t\telem.type = elem.type.slice( 5 );\n\t} else {\n\t\telem.removeAttribute( \"type\" );\n\t}\n\n\treturn elem;\n}\n\nfunction cloneCopyEvent( src, dest ) {\n\tvar i, l, type, pdataOld, udataOld, udataCur, events;\n\n\tif ( dest.nodeType !== 1 ) {\n\t\treturn;\n\t}\n\n\t// 1. Copy private data: events, handlers, etc.\n\tif ( dataPriv.hasData( src ) ) {\n\t\tpdataOld = dataPriv.get( src );\n\t\tevents = pdataOld.events;\n\n\t\tif ( events ) {\n\t\t\tdataPriv.remove( dest, \"handle events\" );\n\n\t\t\tfor ( type in events ) {\n\t\t\t\tfor ( i = 0, l = events[ type ].length; i < l; i++ ) {\n\t\t\t\t\tjQuery.event.add( dest, type, events[ type ][ i ] );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// 2. Copy user data\n\tif ( dataUser.hasData( src ) ) {\n\t\tudataOld = dataUser.access( src );\n\t\tudataCur = jQuery.extend( {}, udataOld );\n\n\t\tdataUser.set( dest, udataCur );\n\t}\n}\n\n// Fix IE bugs, see support tests\nfunction fixInput( src, dest ) {\n\tvar nodeName = dest.nodeName.toLowerCase();\n\n\t// Fails to persist the checked state of a cloned checkbox or radio button.\n\tif ( nodeName === \"input\" && rcheckableType.test( src.type ) ) {\n\t\tdest.checked = src.checked;\n\n\t// Fails to return the selected option to the default selected state when cloning options\n\t} else if ( nodeName === \"input\" || nodeName === \"textarea\" ) {\n\t\tdest.defaultValue = src.defaultValue;\n\t}\n}\n\nfunction domManip( collection, args, callback, ignored ) {\n\n\t// Flatten any nested arrays\n\targs = flat( args );\n\n\tvar fragment, first, scripts, hasScripts, node, doc,\n\t\ti = 0,\n\t\tl = collection.length,\n\t\tiNoClone = l - 1,\n\t\tvalue = args[ 0 ],\n\t\tvalueIsFunction = isFunction( value );\n\n\t// We can't cloneNode fragments that contain checked, in WebKit\n\tif ( valueIsFunction ||\n\t\t\t( l > 1 && typeof value === \"string\" &&\n\t\t\t\t!support.checkClone && rchecked.test( value ) ) ) {\n\t\treturn collection.each( function( index ) {\n\t\t\tvar self = collection.eq( index );\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\targs[ 0 ] = value.call( this, index, self.html() );\n\t\t\t}\n\t\t\tdomManip( self, args, callback, ignored );\n\t\t} );\n\t}\n\n\tif ( l ) {\n\t\tfragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );\n\t\tfirst = fragment.firstChild;\n\n\t\tif ( fragment.childNodes.length === 1 ) {\n\t\t\tfragment = first;\n\t\t}\n\n\t\t// Require either new content or an interest in ignored elements to invoke the callback\n\t\tif ( first || ignored ) {\n\t\t\tscripts = jQuery.map( getAll( fragment, \"script\" ), disableScript );\n\t\t\thasScripts = scripts.length;\n\n\t\t\t// Use the original fragment for the last item\n\t\t\t// instead of the first because it can end up\n\t\t\t// being emptied incorrectly in certain situations (trac-8070).\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tnode = fragment;\n\n\t\t\t\tif ( i !== iNoClone ) {\n\t\t\t\t\tnode = jQuery.clone( node, true, true );\n\n\t\t\t\t\t// Keep references to cloned scripts for later restoration\n\t\t\t\t\tif ( hasScripts ) {\n\n\t\t\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\t\t\tjQuery.merge( scripts, getAll( node, \"script\" ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tcallback.call( collection[ i ], node, i );\n\t\t\t}\n\n\t\t\tif ( hasScripts ) {\n\t\t\t\tdoc = scripts[ scripts.length - 1 ].ownerDocument;\n\n\t\t\t\t// Re-enable scripts\n\t\t\t\tjQuery.map( scripts, restoreScript );\n\n\t\t\t\t// Evaluate executable scripts on first document insertion\n\t\t\t\tfor ( i = 0; i < hasScripts; i++ ) {\n\t\t\t\t\tnode = scripts[ i ];\n\t\t\t\t\tif ( rscriptType.test( node.type || \"\" ) &&\n\t\t\t\t\t\t!dataPriv.access( node, \"globalEval\" ) &&\n\t\t\t\t\t\tjQuery.contains( doc, node ) ) {\n\n\t\t\t\t\t\tif ( node.src && ( node.type || \"\" ).toLowerCase()  !== \"module\" ) {\n\n\t\t\t\t\t\t\t// Optional AJAX dependency, but won't run scripts if not present\n\t\t\t\t\t\t\tif ( jQuery._evalUrl && !node.noModule ) {\n\t\t\t\t\t\t\t\tjQuery._evalUrl( node.src, {\n\t\t\t\t\t\t\t\t\tnonce: node.nonce || node.getAttribute( \"nonce\" )\n\t\t\t\t\t\t\t\t}, doc );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Unwrap a CDATA section containing script contents. This shouldn't be\n\t\t\t\t\t\t\t// needed as in XML documents they're already not visible when\n\t\t\t\t\t\t\t// inspecting element contents and in HTML documents they have no\n\t\t\t\t\t\t\t// meaning but we're preserving that logic for backwards compatibility.\n\t\t\t\t\t\t\t// This will be removed completely in 4.0. See gh-4904.\n\t\t\t\t\t\t\tDOMEval( node.textContent.replace( rcleanScript, \"\" ), node, doc );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn collection;\n}\n\nfunction remove( elem, selector, keepData ) {\n\tvar node,\n\t\tnodes = selector ? jQuery.filter( selector, elem ) : elem,\n\t\ti = 0;\n\n\tfor ( ; ( node = nodes[ i ] ) != null; i++ ) {\n\t\tif ( !keepData && node.nodeType === 1 ) {\n\t\t\tjQuery.cleanData( getAll( node ) );\n\t\t}\n\n\t\tif ( node.parentNode ) {\n\t\t\tif ( keepData && isAttached( node ) ) {\n\t\t\t\tsetGlobalEval( getAll( node, \"script\" ) );\n\t\t\t}\n\t\t\tnode.parentNode.removeChild( node );\n\t\t}\n\t}\n\n\treturn elem;\n}\n\njQuery.extend( {\n\thtmlPrefilter: function( html ) {\n\t\treturn html;\n\t},\n\n\tclone: function( elem, dataAndEvents, deepDataAndEvents ) {\n\t\tvar i, l, srcElements, destElements,\n\t\t\tclone = elem.cloneNode( true ),\n\t\t\tinPage = isAttached( elem );\n\n\t\t// Fix IE cloning issues\n\t\tif ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&\n\t\t\t\t!jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// We eschew jQuery#find here for performance reasons:\n\t\t\t// https://jsperf.com/getall-vs-sizzle/2\n\t\t\tdestElements = getAll( clone );\n\t\t\tsrcElements = getAll( elem );\n\n\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\tfixInput( srcElements[ i ], destElements[ i ] );\n\t\t\t}\n\t\t}\n\n\t\t// Copy the events from the original to the clone\n\t\tif ( dataAndEvents ) {\n\t\t\tif ( deepDataAndEvents ) {\n\t\t\t\tsrcElements = srcElements || getAll( elem );\n\t\t\t\tdestElements = destElements || getAll( clone );\n\n\t\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\t\tcloneCopyEvent( srcElements[ i ], destElements[ i ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tcloneCopyEvent( elem, clone );\n\t\t\t}\n\t\t}\n\n\t\t// Preserve script evaluation history\n\t\tdestElements = getAll( clone, \"script\" );\n\t\tif ( destElements.length > 0 ) {\n\t\t\tsetGlobalEval( destElements, !inPage && getAll( elem, \"script\" ) );\n\t\t}\n\n\t\t// Return the cloned set\n\t\treturn clone;\n\t},\n\n\tcleanData: function( elems ) {\n\t\tvar data, elem, type,\n\t\t\tspecial = jQuery.event.special,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {\n\t\t\tif ( acceptData( elem ) ) {\n\t\t\t\tif ( ( data = elem[ dataPriv.expando ] ) ) {\n\t\t\t\t\tif ( data.events ) {\n\t\t\t\t\t\tfor ( type in data.events ) {\n\t\t\t\t\t\t\tif ( special[ type ] ) {\n\t\t\t\t\t\t\t\tjQuery.event.remove( elem, type );\n\n\t\t\t\t\t\t\t// This is a shortcut to avoid jQuery.event.remove's overhead\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tjQuery.removeEvent( elem, type, data.handle );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataPriv.expando ] = undefined;\n\t\t\t\t}\n\t\t\t\tif ( elem[ dataUser.expando ] ) {\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataUser.expando ] = undefined;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n} );\n\njQuery.fn.extend( {\n\tdetach: function( selector ) {\n\t\treturn remove( this, selector, true );\n\t},\n\n\tremove: function( selector ) {\n\t\treturn remove( this, selector );\n\t},\n\n\ttext: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\treturn value === undefined ?\n\t\t\t\tjQuery.text( this ) :\n\t\t\t\tthis.empty().each( function() {\n\t\t\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\t\t\tthis.textContent = value;\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t}, null, value, arguments.length );\n\t},\n\n\tappend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.appendChild( elem );\n\t\t\t}\n\t\t} );\n\t},\n\n\tprepend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.insertBefore( elem, target.firstChild );\n\t\t\t}\n\t\t} );\n\t},\n\n\tbefore: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this );\n\t\t\t}\n\t\t} );\n\t},\n\n\tafter: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this.nextSibling );\n\t\t\t}\n\t\t} );\n\t},\n\n\tempty: function() {\n\t\tvar elem,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = this[ i ] ) != null; i++ ) {\n\t\t\tif ( elem.nodeType === 1 ) {\n\n\t\t\t\t// Prevent memory leaks\n\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\n\t\t\t\t// Remove any remaining nodes\n\t\t\t\telem.textContent = \"\";\n\t\t\t}\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tclone: function( dataAndEvents, deepDataAndEvents ) {\n\t\tdataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n\t\tdeepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n\n\t\treturn this.map( function() {\n\t\t\treturn jQuery.clone( this, dataAndEvents, deepDataAndEvents );\n\t\t} );\n\t},\n\n\thtml: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\tvar elem = this[ 0 ] || {},\n\t\t\t\ti = 0,\n\t\t\t\tl = this.length;\n\n\t\t\tif ( value === undefined && elem.nodeType === 1 ) {\n\t\t\t\treturn elem.innerHTML;\n\t\t\t}\n\n\t\t\t// See if we can take a shortcut and just use innerHTML\n\t\t\tif ( typeof value === \"string\" && !rnoInnerhtml.test( value ) &&\n\t\t\t\t!wrapMap[ ( rtagName.exec( value ) || [ \"\", \"\" ] )[ 1 ].toLowerCase() ] ) {\n\n\t\t\t\tvalue = jQuery.htmlPrefilter( value );\n\n\t\t\t\ttry {\n\t\t\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\t\t\telem = this[ i ] || {};\n\n\t\t\t\t\t\t// Remove element nodes and prevent memory leaks\n\t\t\t\t\t\tif ( elem.nodeType === 1 ) {\n\t\t\t\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\t\t\t\t\t\t\telem.innerHTML = value;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\telem = 0;\n\n\t\t\t\t// If using innerHTML throws an exception, use the fallback method\n\t\t\t\t} catch ( e ) {}\n\t\t\t}\n\n\t\t\tif ( elem ) {\n\t\t\t\tthis.empty().append( value );\n\t\t\t}\n\t\t}, null, value, arguments.length );\n\t},\n\n\treplaceWith: function() {\n\t\tvar ignored = [];\n\n\t\t// Make the changes, replacing each non-ignored context element with the new content\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tvar parent = this.parentNode;\n\n\t\t\tif ( jQuery.inArray( this, ignored ) < 0 ) {\n\t\t\t\tjQuery.cleanData( getAll( this ) );\n\t\t\t\tif ( parent ) {\n\t\t\t\t\tparent.replaceChild( elem, this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Force callback invocation\n\t\t}, ignored );\n\t}\n} );\n\njQuery.each( {\n\tappendTo: \"append\",\n\tprependTo: \"prepend\",\n\tinsertBefore: \"before\",\n\tinsertAfter: \"after\",\n\treplaceAll: \"replaceWith\"\n}, function( name, original ) {\n\tjQuery.fn[ name ] = function( selector ) {\n\t\tvar elems,\n\t\t\tret = [],\n\t\t\tinsert = jQuery( selector ),\n\t\t\tlast = insert.length - 1,\n\t\t\ti = 0;\n\n\t\tfor ( ; i <= last; i++ ) {\n\t\t\telems = i === last ? this : this.clone( true );\n\t\t\tjQuery( insert[ i ] )[ original ]( elems );\n\n\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t// .get() because push.apply(_, arraylike) throws on ancient WebKit\n\t\t\tpush.apply( ret, elems.get() );\n\t\t}\n\n\t\treturn this.pushStack( ret );\n\t};\n} );\nvar rnumnonpx = new RegExp( \"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\" );\n\nvar rcustomProp = /^--/;\n\n\nvar getStyles = function( elem ) {\n\n\t\t// Support: IE <=11 only, Firefox <=30 (trac-15098, trac-14150)\n\t\t// IE throws on elements created in popups\n\t\t// FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n\t\tvar view = elem.ownerDocument.defaultView;\n\n\t\tif ( !view || !view.opener ) {\n\t\t\tview = window;\n\t\t}\n\n\t\treturn view.getComputedStyle( elem );\n\t};\n\nvar swap = function( elem, options, callback ) {\n\tvar ret, name,\n\t\told = {};\n\n\t// Remember the old values, and insert the new ones\n\tfor ( name in options ) {\n\t\told[ name ] = elem.style[ name ];\n\t\telem.style[ name ] = options[ name ];\n\t}\n\n\tret = callback.call( elem );\n\n\t// Revert the old values\n\tfor ( name in options ) {\n\t\telem.style[ name ] = old[ name ];\n\t}\n\n\treturn ret;\n};\n\n\nvar rboxStyle = new RegExp( cssExpand.join( \"|\" ), \"i\" );\n\n\n\n( function() {\n\n\t// Executing both pixelPosition & boxSizingReliable tests require only one layout\n\t// so they're executed at the same time to save the second computation.\n\tfunction computeStyleTests() {\n\n\t\t// This is a singleton, we need to execute it only once\n\t\tif ( !div ) {\n\t\t\treturn;\n\t\t}\n\n\t\tcontainer.style.cssText = \"position:absolute;left:-11111px;width:60px;\" +\n\t\t\t\"margin-top:1px;padding:0;border:0\";\n\t\tdiv.style.cssText =\n\t\t\t\"position:relative;display:block;box-sizing:border-box;overflow:scroll;\" +\n\t\t\t\"margin:auto;border:1px;padding:1px;\" +\n\t\t\t\"width:60%;top:1%\";\n\t\tdocumentElement.appendChild( container ).appendChild( div );\n\n\t\tvar divStyle = window.getComputedStyle( div );\n\t\tpixelPositionVal = divStyle.top !== \"1%\";\n\n\t\t// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n\t\treliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;\n\n\t\t// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n\t\t// Some styles come back with percentage values, even though they shouldn't\n\t\tdiv.style.right = \"60%\";\n\t\tpixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;\n\n\t\t// Support: IE 9 - 11 only\n\t\t// Detect misreporting of content dimensions for box-sizing:border-box elements\n\t\tboxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;\n\n\t\t// Support: IE 9 only\n\t\t// Detect overflow:scroll screwiness (gh-3699)\n\t\t// Support: Chrome <=64\n\t\t// Don't get tricked when zoom affects offsetWidth (gh-4029)\n\t\tdiv.style.position = \"absolute\";\n\t\tscrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12;\n\n\t\tdocumentElement.removeChild( container );\n\n\t\t// Nullify the div so it wouldn't be stored in the memory and\n\t\t// it will also be a sign that checks already performed\n\t\tdiv = null;\n\t}\n\n\tfunction roundPixelMeasures( measure ) {\n\t\treturn Math.round( parseFloat( measure ) );\n\t}\n\n\tvar pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,\n\t\treliableTrDimensionsVal, reliableMarginLeftVal,\n\t\tcontainer = document.createElement( \"div\" ),\n\t\tdiv = document.createElement( \"div\" );\n\n\t// Finish early in limited (non-browser) environments\n\tif ( !div.style ) {\n\t\treturn;\n\t}\n\n\t// Support: IE <=9 - 11 only\n\t// Style of cloned element affects source element cloned (trac-8908)\n\tdiv.style.backgroundClip = \"content-box\";\n\tdiv.cloneNode( true ).style.backgroundClip = \"\";\n\tsupport.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n\n\tjQuery.extend( support, {\n\t\tboxSizingReliable: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn boxSizingReliableVal;\n\t\t},\n\t\tpixelBoxStyles: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelBoxStylesVal;\n\t\t},\n\t\tpixelPosition: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelPositionVal;\n\t\t},\n\t\treliableMarginLeft: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn reliableMarginLeftVal;\n\t\t},\n\t\tscrollboxSize: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn scrollboxSizeVal;\n\t\t},\n\n\t\t// Support: IE 9 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Behavior in IE 9 is more subtle than in newer versions & it passes\n\t\t// some versions of this test; make sure not to make it pass there!\n\t\t//\n\t\t// Support: Firefox 70+\n\t\t// Only Firefox includes border widths\n\t\t// in computed dimensions. (gh-4529)\n\t\treliableTrDimensions: function() {\n\t\t\tvar table, tr, trChild, trStyle;\n\t\t\tif ( reliableTrDimensionsVal == null ) {\n\t\t\t\ttable = document.createElement( \"table\" );\n\t\t\t\ttr = document.createElement( \"tr\" );\n\t\t\t\ttrChild = document.createElement( \"div\" );\n\n\t\t\t\ttable.style.cssText = \"position:absolute;left:-11111px;border-collapse:separate\";\n\t\t\t\ttr.style.cssText = \"box-sizing:content-box;border:1px solid\";\n\n\t\t\t\t// Support: Chrome 86+\n\t\t\t\t// Height set through cssText does not get applied.\n\t\t\t\t// Computed height then comes back as 0.\n\t\t\t\ttr.style.height = \"1px\";\n\t\t\t\ttrChild.style.height = \"9px\";\n\n\t\t\t\t// Support: Android 8 Chrome 86+\n\t\t\t\t// In our bodyBackground.html iframe,\n\t\t\t\t// display for all div elements is set to \"inline\",\n\t\t\t\t// which causes a problem only in Android 8 Chrome 86.\n\t\t\t\t// Ensuring the div is `display: block`\n\t\t\t\t// gets around this issue.\n\t\t\t\ttrChild.style.display = \"block\";\n\n\t\t\t\tdocumentElement\n\t\t\t\t\t.appendChild( table )\n\t\t\t\t\t.appendChild( tr )\n\t\t\t\t\t.appendChild( trChild );\n\n\t\t\t\ttrStyle = window.getComputedStyle( tr );\n\t\t\t\treliableTrDimensionsVal = ( parseInt( trStyle.height, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderTopWidth, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderBottomWidth, 10 ) ) === tr.offsetHeight;\n\n\t\t\t\tdocumentElement.removeChild( table );\n\t\t\t}\n\t\t\treturn reliableTrDimensionsVal;\n\t\t}\n\t} );\n} )();\n\n\nfunction curCSS( elem, name, computed ) {\n\tvar width, minWidth, maxWidth, ret,\n\t\tisCustomProp = rcustomProp.test( name ),\n\n\t\t// Support: Firefox 51+\n\t\t// Retrieving style before computed somehow\n\t\t// fixes an issue with getting wrong values\n\t\t// on detached elements\n\t\tstyle = elem.style;\n\n\tcomputed = computed || getStyles( elem );\n\n\t// getPropertyValue is needed for:\n\t//   .css('filter') (IE 9 only, trac-12537)\n\t//   .css('--customProperty) (gh-3144)\n\tif ( computed ) {\n\n\t\t// Support: IE <=9 - 11+\n\t\t// IE only supports `\"float\"` in `getPropertyValue`; in computed styles\n\t\t// it's only available as `\"cssFloat\"`. We no longer modify properties\n\t\t// sent to `.css()` apart from camelCasing, so we need to check both.\n\t\t// Normally, this would create difference in behavior: if\n\t\t// `getPropertyValue` returns an empty string, the value returned\n\t\t// by `.css()` would be `undefined`. This is usually the case for\n\t\t// disconnected elements. However, in IE even disconnected elements\n\t\t// with no styles return `\"none\"` for `getPropertyValue( \"float\" )`\n\t\tret = computed.getPropertyValue( name ) || computed[ name ];\n\n\t\tif ( isCustomProp && ret ) {\n\n\t\t\t// Support: Firefox 105+, Chrome <=105+\n\t\t\t// Spec requires trimming whitespace for custom properties (gh-4926).\n\t\t\t// Firefox only trims leading whitespace. Chrome just collapses\n\t\t\t// both leading & trailing whitespace to a single space.\n\t\t\t//\n\t\t\t// Fall back to `undefined` if empty string returned.\n\t\t\t// This collapses a missing definition with property defined\n\t\t\t// and set to an empty string but there's no standard API\n\t\t\t// allowing us to differentiate them without a performance penalty\n\t\t\t// and returning `undefined` aligns with older jQuery.\n\t\t\t//\n\t\t\t// rtrimCSS treats U+000D CARRIAGE RETURN and U+000C FORM FEED\n\t\t\t// as whitespace while CSS does not, but this is not a problem\n\t\t\t// because CSS preprocessing replaces them with U+000A LINE FEED\n\t\t\t// (which *is* CSS whitespace)\n\t\t\t// https://www.w3.org/TR/css-syntax-3/#input-preprocessing\n\t\t\tret = ret.replace( rtrimCSS, \"$1\" ) || undefined;\n\t\t}\n\n\t\tif ( ret === \"\" && !isAttached( elem ) ) {\n\t\t\tret = jQuery.style( elem, name );\n\t\t}\n\n\t\t// A tribute to the \"awesome hack by Dean Edwards\"\n\t\t// Android Browser returns percentage for some values,\n\t\t// but width seems to be reliably pixels.\n\t\t// This is against the CSSOM draft spec:\n\t\t// https://drafts.csswg.org/cssom/#resolved-values\n\t\tif ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {\n\n\t\t\t// Remember the original values\n\t\t\twidth = style.width;\n\t\t\tminWidth = style.minWidth;\n\t\t\tmaxWidth = style.maxWidth;\n\n\t\t\t// Put in the new values to get a computed value out\n\t\t\tstyle.minWidth = style.maxWidth = style.width = ret;\n\t\t\tret = computed.width;\n\n\t\t\t// Revert the changed values\n\t\t\tstyle.width = width;\n\t\t\tstyle.minWidth = minWidth;\n\t\t\tstyle.maxWidth = maxWidth;\n\t\t}\n\t}\n\n\treturn ret !== undefined ?\n\n\t\t// Support: IE <=9 - 11 only\n\t\t// IE returns zIndex value as an integer.\n\t\tret + \"\" :\n\t\tret;\n}\n\n\nfunction addGetHookIf( conditionFn, hookFn ) {\n\n\t// Define the hook, we'll check on the first run if it's really needed.\n\treturn {\n\t\tget: function() {\n\t\t\tif ( conditionFn() ) {\n\n\t\t\t\t// Hook not needed (or it's not possible to use it due\n\t\t\t\t// to missing dependency), remove it.\n\t\t\t\tdelete this.get;\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Hook needed; redefine it so that the support test is not executed again.\n\t\t\treturn ( this.get = hookFn ).apply( this, arguments );\n\t\t}\n\t};\n}\n\n\nvar cssPrefixes = [ \"Webkit\", \"Moz\", \"ms\" ],\n\temptyStyle = document.createElement( \"div\" ).style,\n\tvendorProps = {};\n\n// Return a vendor-prefixed property or undefined\nfunction vendorPropName( name ) {\n\n\t// Check for vendor prefixed names\n\tvar capName = name[ 0 ].toUpperCase() + name.slice( 1 ),\n\t\ti = cssPrefixes.length;\n\n\twhile ( i-- ) {\n\t\tname = cssPrefixes[ i ] + capName;\n\t\tif ( name in emptyStyle ) {\n\t\t\treturn name;\n\t\t}\n\t}\n}\n\n// Return a potentially-mapped jQuery.cssProps or vendor prefixed property\nfunction finalPropName( name ) {\n\tvar final = jQuery.cssProps[ name ] || vendorProps[ name ];\n\n\tif ( final ) {\n\t\treturn final;\n\t}\n\tif ( name in emptyStyle ) {\n\t\treturn name;\n\t}\n\treturn vendorProps[ name ] = vendorPropName( name ) || name;\n}\n\n\nvar\n\n\t// Swappable if display is none or starts with table\n\t// except \"table\", \"table-cell\", or \"table-caption\"\n\t// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n\trdisplayswap = /^(none|table(?!-c[ea]).+)/,\n\tcssShow = { position: \"absolute\", visibility: \"hidden\", display: \"block\" },\n\tcssNormalTransform = {\n\t\tletterSpacing: \"0\",\n\t\tfontWeight: \"400\"\n\t};\n\nfunction setPositiveNumber( _elem, value, subtract ) {\n\n\t// Any relative (+/-) values have already been\n\t// normalized at this point\n\tvar matches = rcssNum.exec( value );\n\treturn matches ?\n\n\t\t// Guard against undefined \"subtract\", e.g., when used as in cssHooks\n\t\tMath.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || \"px\" ) :\n\t\tvalue;\n}\n\nfunction boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {\n\tvar i = dimension === \"width\" ? 1 : 0,\n\t\textra = 0,\n\t\tdelta = 0,\n\t\tmarginDelta = 0;\n\n\t// Adjustment may not be necessary\n\tif ( box === ( isBorderBox ? \"border\" : \"content\" ) ) {\n\t\treturn 0;\n\t}\n\n\tfor ( ; i < 4; i += 2 ) {\n\n\t\t// Both box models exclude margin\n\t\t// Count margin delta separately to only add it after scroll gutter adjustment.\n\t\t// This is needed to make negative margins work with `outerHeight( true )` (gh-3982).\n\t\tif ( box === \"margin\" ) {\n\t\t\tmarginDelta += jQuery.css( elem, box + cssExpand[ i ], true, styles );\n\t\t}\n\n\t\t// If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n\t\tif ( !isBorderBox ) {\n\n\t\t\t// Add padding\n\t\t\tdelta += jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\n\t\t\t// For \"border\" or \"margin\", add border\n\t\t\tif ( box !== \"padding\" ) {\n\t\t\t\tdelta += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\n\t\t\t// But still keep track of it otherwise\n\t\t\t} else {\n\t\t\t\textra += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\n\t\t// If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n\t\t// \"padding\" or \"margin\"\n\t\t} else {\n\n\t\t\t// For \"content\", subtract padding\n\t\t\tif ( box === \"content\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\t\t\t}\n\n\t\t\t// For \"content\" or \"padding\", subtract border\n\t\t\tif ( box !== \"margin\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Account for positive content-box scroll gutter when requested by providing computedVal\n\tif ( !isBorderBox && computedVal >= 0 ) {\n\n\t\t// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n\t\t// Assuming integer scroll gutter, subtract the rest and round down\n\t\tdelta += Math.max( 0, Math.ceil(\n\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\tcomputedVal -\n\t\t\tdelta -\n\t\t\textra -\n\t\t\t0.5\n\n\t\t// If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter\n\t\t// Use an explicit zero to avoid NaN (gh-3964)\n\t\t) ) || 0;\n\t}\n\n\treturn delta + marginDelta;\n}\n\nfunction getWidthOrHeight( elem, dimension, extra ) {\n\n\t// Start with computed style\n\tvar styles = getStyles( elem ),\n\n\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).\n\t\t// Fake content-box until we know it's needed to know the true value.\n\t\tboxSizingNeeded = !support.boxSizingReliable() || extra,\n\t\tisBorderBox = boxSizingNeeded &&\n\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\tvalueIsBorderBox = isBorderBox,\n\n\t\tval = curCSS( elem, dimension, styles ),\n\t\toffsetProp = \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 );\n\n\t// Support: Firefox <=54\n\t// Return a confounding non-pixel value or feign ignorance, as appropriate.\n\tif ( rnumnonpx.test( val ) ) {\n\t\tif ( !extra ) {\n\t\t\treturn val;\n\t\t}\n\t\tval = \"auto\";\n\t}\n\n\n\t// Support: IE 9 - 11 only\n\t// Use offsetWidth/offsetHeight for when box sizing is unreliable.\n\t// In those cases, the computed value can be trusted to be border-box.\n\tif ( ( !support.boxSizingReliable() && isBorderBox ||\n\n\t\t// Support: IE 10 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Interestingly, in some cases IE 9 doesn't suffer from this issue.\n\t\t!support.reliableTrDimensions() && nodeName( elem, \"tr\" ) ||\n\n\t\t// Fall back to offsetWidth/offsetHeight when value is \"auto\"\n\t\t// This happens for inline elements with no explicit setting (gh-3571)\n\t\tval === \"auto\" ||\n\n\t\t// Support: Android <=4.1 - 4.3 only\n\t\t// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n\t\t!parseFloat( val ) && jQuery.css( elem, \"display\", false, styles ) === \"inline\" ) &&\n\n\t\t// Make sure the element is visible & connected\n\t\telem.getClientRects().length ) {\n\n\t\tisBorderBox = jQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\";\n\n\t\t// Where available, offsetWidth/offsetHeight approximate border box dimensions.\n\t\t// Where not available (e.g., SVG), assume unreliable box-sizing and interpret the\n\t\t// retrieved value as a content box dimension.\n\t\tvalueIsBorderBox = offsetProp in elem;\n\t\tif ( valueIsBorderBox ) {\n\t\t\tval = elem[ offsetProp ];\n\t\t}\n\t}\n\n\t// Normalize \"\" and auto\n\tval = parseFloat( val ) || 0;\n\n\t// Adjust for the element's box model\n\treturn ( val +\n\t\tboxModelAdjustment(\n\t\t\telem,\n\t\t\tdimension,\n\t\t\textra || ( isBorderBox ? \"border\" : \"content\" ),\n\t\t\tvalueIsBorderBox,\n\t\t\tstyles,\n\n\t\t\t// Provide the current computed size to request scroll gutter calculation (gh-3589)\n\t\t\tval\n\t\t)\n\t) + \"px\";\n}\n\njQuery.extend( {\n\n\t// Add in style property hooks for overriding the default\n\t// behavior of getting and setting a style property\n\tcssHooks: {\n\t\topacity: {\n\t\t\tget: function( elem, computed ) {\n\t\t\t\tif ( computed ) {\n\n\t\t\t\t\t// We should always get a number back from opacity\n\t\t\t\t\tvar ret = curCSS( elem, \"opacity\" );\n\t\t\t\t\treturn ret === \"\" ? \"1\" : ret;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\t// Don't automatically add \"px\" to these possibly-unitless properties\n\tcssNumber: {\n\t\tanimationIterationCount: true,\n\t\taspectRatio: true,\n\t\tborderImageSlice: true,\n\t\tcolumnCount: true,\n\t\tflexGrow: true,\n\t\tflexShrink: true,\n\t\tfontWeight: true,\n\t\tgridArea: true,\n\t\tgridColumn: true,\n\t\tgridColumnEnd: true,\n\t\tgridColumnStart: true,\n\t\tgridRow: true,\n\t\tgridRowEnd: true,\n\t\tgridRowStart: true,\n\t\tlineHeight: true,\n\t\topacity: true,\n\t\torder: true,\n\t\torphans: true,\n\t\tscale: true,\n\t\twidows: true,\n\t\tzIndex: true,\n\t\tzoom: true,\n\n\t\t// SVG-related\n\t\tfillOpacity: true,\n\t\tfloodOpacity: true,\n\t\tstopOpacity: true,\n\t\tstrokeMiterlimit: true,\n\t\tstrokeOpacity: true\n\t},\n\n\t// Add in properties whose names you wish to fix before\n\t// setting or getting the value\n\tcssProps: {},\n\n\t// Get and set the style property on a DOM Node\n\tstyle: function( elem, name, value, extra ) {\n\n\t\t// Don't set styles on text and comment nodes\n\t\tif ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Make sure that we're working with the right name\n\t\tvar ret, type, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name ),\n\t\t\tstyle = elem.style;\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to query the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Gets hook for the prefixed version, then unprefixed version\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// Check if we're setting a value\n\t\tif ( value !== undefined ) {\n\t\t\ttype = typeof value;\n\n\t\t\t// Convert \"+=\" or \"-=\" to relative numbers (trac-7345)\n\t\t\tif ( type === \"string\" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {\n\t\t\t\tvalue = adjustCSS( elem, name, ret );\n\n\t\t\t\t// Fixes bug trac-9237\n\t\t\t\ttype = \"number\";\n\t\t\t}\n\n\t\t\t// Make sure that null and NaN values aren't set (trac-7116)\n\t\t\tif ( value == null || value !== value ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// If a number was passed in, add the unit (except for certain CSS properties)\n\t\t\t// The isCustomProp check can be removed in jQuery 4.0 when we only auto-append\n\t\t\t// \"px\" to a few hardcoded values.\n\t\t\tif ( type === \"number\" && !isCustomProp ) {\n\t\t\t\tvalue += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? \"\" : \"px\" );\n\t\t\t}\n\n\t\t\t// background-* props affect original clone's values\n\t\t\tif ( !support.clearCloneStyle && value === \"\" && name.indexOf( \"background\" ) === 0 ) {\n\t\t\t\tstyle[ name ] = \"inherit\";\n\t\t\t}\n\n\t\t\t// If a hook was provided, use that value, otherwise just set the specified value\n\t\t\tif ( !hooks || !( \"set\" in hooks ) ||\n\t\t\t\t( value = hooks.set( elem, value, extra ) ) !== undefined ) {\n\n\t\t\t\tif ( isCustomProp ) {\n\t\t\t\t\tstyle.setProperty( name, value );\n\t\t\t\t} else {\n\t\t\t\t\tstyle[ name ] = value;\n\t\t\t\t}\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// If a hook was provided get the non-computed value from there\n\t\t\tif ( hooks && \"get\" in hooks &&\n\t\t\t\t( ret = hooks.get( elem, false, extra ) ) !== undefined ) {\n\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\t// Otherwise just get the value from the style object\n\t\t\treturn style[ name ];\n\t\t}\n\t},\n\n\tcss: function( elem, name, extra, styles ) {\n\t\tvar val, num, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name );\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to modify the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Try prefixed name followed by the unprefixed name\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// If a hook was provided get the computed value from there\n\t\tif ( hooks && \"get\" in hooks ) {\n\t\t\tval = hooks.get( elem, true, extra );\n\t\t}\n\n\t\t// Otherwise, if a way to get the computed value exists, use that\n\t\tif ( val === undefined ) {\n\t\t\tval = curCSS( elem, name, styles );\n\t\t}\n\n\t\t// Convert \"normal\" to computed value\n\t\tif ( val === \"normal\" && name in cssNormalTransform ) {\n\t\t\tval = cssNormalTransform[ name ];\n\t\t}\n\n\t\t// Make numeric if forced or a qualifier was provided and val looks numeric\n\t\tif ( extra === \"\" || extra ) {\n\t\t\tnum = parseFloat( val );\n\t\t\treturn extra === true || isFinite( num ) ? num || 0 : val;\n\t\t}\n\n\t\treturn val;\n\t}\n} );\n\njQuery.each( [ \"height\", \"width\" ], function( _i, dimension ) {\n\tjQuery.cssHooks[ dimension ] = {\n\t\tget: function( elem, computed, extra ) {\n\t\t\tif ( computed ) {\n\n\t\t\t\t// Certain elements can have dimension info if we invisibly show them\n\t\t\t\t// but it must have a current display style that would benefit\n\t\t\t\treturn rdisplayswap.test( jQuery.css( elem, \"display\" ) ) &&\n\n\t\t\t\t\t// Support: Safari 8+\n\t\t\t\t\t// Table columns in Safari have non-zero offsetWidth & zero\n\t\t\t\t\t// getBoundingClientRect().width unless display is changed.\n\t\t\t\t\t// Support: IE <=11 only\n\t\t\t\t\t// Running getBoundingClientRect on a disconnected node\n\t\t\t\t\t// in IE throws an error.\n\t\t\t\t\t( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?\n\t\t\t\t\tswap( elem, cssShow, function() {\n\t\t\t\t\t\treturn getWidthOrHeight( elem, dimension, extra );\n\t\t\t\t\t} ) :\n\t\t\t\t\tgetWidthOrHeight( elem, dimension, extra );\n\t\t\t}\n\t\t},\n\n\t\tset: function( elem, value, extra ) {\n\t\t\tvar matches,\n\t\t\t\tstyles = getStyles( elem ),\n\n\t\t\t\t// Only read styles.position if the test has a chance to fail\n\t\t\t\t// to avoid forcing a reflow.\n\t\t\t\tscrollboxSizeBuggy = !support.scrollboxSize() &&\n\t\t\t\t\tstyles.position === \"absolute\",\n\n\t\t\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)\n\t\t\t\tboxSizingNeeded = scrollboxSizeBuggy || extra,\n\t\t\t\tisBorderBox = boxSizingNeeded &&\n\t\t\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\t\t\tsubtract = extra ?\n\t\t\t\t\tboxModelAdjustment(\n\t\t\t\t\t\telem,\n\t\t\t\t\t\tdimension,\n\t\t\t\t\t\textra,\n\t\t\t\t\t\tisBorderBox,\n\t\t\t\t\t\tstyles\n\t\t\t\t\t) :\n\t\t\t\t\t0;\n\n\t\t\t// Account for unreliable border-box dimensions by comparing offset* to computed and\n\t\t\t// faking a content-box to get border and padding (gh-3699)\n\t\t\tif ( isBorderBox && scrollboxSizeBuggy ) {\n\t\t\t\tsubtract -= Math.ceil(\n\t\t\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\t\t\tparseFloat( styles[ dimension ] ) -\n\t\t\t\t\tboxModelAdjustment( elem, dimension, \"border\", false, styles ) -\n\t\t\t\t\t0.5\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// Convert to pixels if value adjustment is needed\n\t\t\tif ( subtract && ( matches = rcssNum.exec( value ) ) &&\n\t\t\t\t( matches[ 3 ] || \"px\" ) !== \"px\" ) {\n\n\t\t\t\telem.style[ dimension ] = value;\n\t\t\t\tvalue = jQuery.css( elem, dimension );\n\t\t\t}\n\n\t\t\treturn setPositiveNumber( elem, value, subtract );\n\t\t}\n\t};\n} );\n\njQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,\n\tfunction( elem, computed ) {\n\t\tif ( computed ) {\n\t\t\treturn ( parseFloat( curCSS( elem, \"marginLeft\" ) ) ||\n\t\t\t\telem.getBoundingClientRect().left -\n\t\t\t\t\tswap( elem, { marginLeft: 0 }, function() {\n\t\t\t\t\t\treturn elem.getBoundingClientRect().left;\n\t\t\t\t\t} )\n\t\t\t) + \"px\";\n\t\t}\n\t}\n);\n\n// These hooks are used by animate to expand properties\njQuery.each( {\n\tmargin: \"\",\n\tpadding: \"\",\n\tborder: \"Width\"\n}, function( prefix, suffix ) {\n\tjQuery.cssHooks[ prefix + suffix ] = {\n\t\texpand: function( value ) {\n\t\t\tvar i = 0,\n\t\t\t\texpanded = {},\n\n\t\t\t\t// Assumes a single number if not a string\n\t\t\t\tparts = typeof value === \"string\" ? value.split( \" \" ) : [ value ];\n\n\t\t\tfor ( ; i < 4; i++ ) {\n\t\t\t\texpanded[ prefix + cssExpand[ i ] + suffix ] =\n\t\t\t\t\tparts[ i ] || parts[ i - 2 ] || parts[ 0 ];\n\t\t\t}\n\n\t\t\treturn expanded;\n\t\t}\n\t};\n\n\tif ( prefix !== \"margin\" ) {\n\t\tjQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;\n\t}\n} );\n\njQuery.fn.extend( {\n\tcss: function( name, value ) {\n\t\treturn access( this, function( elem, name, value ) {\n\t\t\tvar styles, len,\n\t\t\t\tmap = {},\n\t\t\t\ti = 0;\n\n\t\t\tif ( Array.isArray( name ) ) {\n\t\t\t\tstyles = getStyles( elem );\n\t\t\t\tlen = name.length;\n\n\t\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\t\tmap[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );\n\t\t\t\t}\n\n\t\t\t\treturn map;\n\t\t\t}\n\n\t\t\treturn value !== undefined ?\n\t\t\t\tjQuery.style( elem, name, value ) :\n\t\t\t\tjQuery.css( elem, name );\n\t\t}, name, value, arguments.length > 1 );\n\t}\n} );\n\n\nfunction Tween( elem, options, prop, end, easing ) {\n\treturn new Tween.prototype.init( elem, options, prop, end, easing );\n}\njQuery.Tween = Tween;\n\nTween.prototype = {\n\tconstructor: Tween,\n\tinit: function( elem, options, prop, end, easing, unit ) {\n\t\tthis.elem = elem;\n\t\tthis.prop = prop;\n\t\tthis.easing = easing || jQuery.easing._default;\n\t\tthis.options = options;\n\t\tthis.start = this.now = this.cur();\n\t\tthis.end = end;\n\t\tthis.unit = unit || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" );\n\t},\n\tcur: function() {\n\t\tvar hooks = Tween.propHooks[ this.prop ];\n\n\t\treturn hooks && hooks.get ?\n\t\t\thooks.get( this ) :\n\t\t\tTween.propHooks._default.get( this );\n\t},\n\trun: function( percent ) {\n\t\tvar eased,\n\t\t\thooks = Tween.propHooks[ this.prop ];\n\n\t\tif ( this.options.duration ) {\n\t\t\tthis.pos = eased = jQuery.easing[ this.easing ](\n\t\t\t\tpercent, this.options.duration * percent, 0, 1, this.options.duration\n\t\t\t);\n\t\t} else {\n\t\t\tthis.pos = eased = percent;\n\t\t}\n\t\tthis.now = ( this.end - this.start ) * eased + this.start;\n\n\t\tif ( this.options.step ) {\n\t\t\tthis.options.step.call( this.elem, this.now, this );\n\t\t}\n\n\t\tif ( hooks && hooks.set ) {\n\t\t\thooks.set( this );\n\t\t} else {\n\t\t\tTween.propHooks._default.set( this );\n\t\t}\n\t\treturn this;\n\t}\n};\n\nTween.prototype.init.prototype = Tween.prototype;\n\nTween.propHooks = {\n\t_default: {\n\t\tget: function( tween ) {\n\t\t\tvar result;\n\n\t\t\t// Use a property on the element directly when it is not a DOM element,\n\t\t\t// or when there is no matching style property that exists.\n\t\t\tif ( tween.elem.nodeType !== 1 ||\n\t\t\t\ttween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {\n\t\t\t\treturn tween.elem[ tween.prop ];\n\t\t\t}\n\n\t\t\t// Passing an empty string as a 3rd parameter to .css will automatically\n\t\t\t// attempt a parseFloat and fallback to a string if the parse fails.\n\t\t\t// Simple values such as \"10px\" are parsed to Float;\n\t\t\t// complex values such as \"rotate(1rad)\" are returned as-is.\n\t\t\tresult = jQuery.css( tween.elem, tween.prop, \"\" );\n\n\t\t\t// Empty strings, null, undefined and \"auto\" are converted to 0.\n\t\t\treturn !result || result === \"auto\" ? 0 : result;\n\t\t},\n\t\tset: function( tween ) {\n\n\t\t\t// Use step hook for back compat.\n\t\t\t// Use cssHook if its there.\n\t\t\t// Use .style if available and use plain properties where available.\n\t\t\tif ( jQuery.fx.step[ tween.prop ] ) {\n\t\t\t\tjQuery.fx.step[ tween.prop ]( tween );\n\t\t\t} else if ( tween.elem.nodeType === 1 && (\n\t\t\t\tjQuery.cssHooks[ tween.prop ] ||\n\t\t\t\t\ttween.elem.style[ finalPropName( tween.prop ) ] != null ) ) {\n\t\t\t\tjQuery.style( tween.elem, tween.prop, tween.now + tween.unit );\n\t\t\t} else {\n\t\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Support: IE <=9 only\n// Panic based approach to setting things on disconnected nodes\nTween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {\n\tset: function( tween ) {\n\t\tif ( tween.elem.nodeType && tween.elem.parentNode ) {\n\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t}\n\t}\n};\n\njQuery.easing = {\n\tlinear: function( p ) {\n\t\treturn p;\n\t},\n\tswing: function( p ) {\n\t\treturn 0.5 - Math.cos( p * Math.PI ) / 2;\n\t},\n\t_default: \"swing\"\n};\n\njQuery.fx = Tween.prototype.init;\n\n// Back compat <1.8 extension point\njQuery.fx.step = {};\n\n\n\n\nvar\n\tfxNow, inProgress,\n\trfxtypes = /^(?:toggle|show|hide)$/,\n\trrun = /queueHooks$/;\n\nfunction schedule() {\n\tif ( inProgress ) {\n\t\tif ( document.hidden === false && window.requestAnimationFrame ) {\n\t\t\twindow.requestAnimationFrame( schedule );\n\t\t} else {\n\t\t\twindow.setTimeout( schedule, jQuery.fx.interval );\n\t\t}\n\n\t\tjQuery.fx.tick();\n\t}\n}\n\n// Animations created synchronously will run synchronously\nfunction createFxNow() {\n\twindow.setTimeout( function() {\n\t\tfxNow = undefined;\n\t} );\n\treturn ( fxNow = Date.now() );\n}\n\n// Generate parameters to create a standard animation\nfunction genFx( type, includeWidth ) {\n\tvar which,\n\t\ti = 0,\n\t\tattrs = { height: type };\n\n\t// If we include width, step value is 1 to do all cssExpand values,\n\t// otherwise step value is 2 to skip over Left and Right\n\tincludeWidth = includeWidth ? 1 : 0;\n\tfor ( ; i < 4; i += 2 - includeWidth ) {\n\t\twhich = cssExpand[ i ];\n\t\tattrs[ \"margin\" + which ] = attrs[ \"padding\" + which ] = type;\n\t}\n\n\tif ( includeWidth ) {\n\t\tattrs.opacity = attrs.width = type;\n\t}\n\n\treturn attrs;\n}\n\nfunction createTween( value, prop, animation ) {\n\tvar tween,\n\t\tcollection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ \"*\" ] ),\n\t\tindex = 0,\n\t\tlength = collection.length;\n\tfor ( ; index < length; index++ ) {\n\t\tif ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {\n\n\t\t\t// We're done with this property\n\t\t\treturn tween;\n\t\t}\n\t}\n}\n\nfunction defaultPrefilter( elem, props, opts ) {\n\tvar prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,\n\t\tisBox = \"width\" in props || \"height\" in props,\n\t\tanim = this,\n\t\torig = {},\n\t\tstyle = elem.style,\n\t\thidden = elem.nodeType && isHiddenWithinTree( elem ),\n\t\tdataShow = dataPriv.get( elem, \"fxshow\" );\n\n\t// Queue-skipping animations hijack the fx hooks\n\tif ( !opts.queue ) {\n\t\thooks = jQuery._queueHooks( elem, \"fx\" );\n\t\tif ( hooks.unqueued == null ) {\n\t\t\thooks.unqueued = 0;\n\t\t\toldfire = hooks.empty.fire;\n\t\t\thooks.empty.fire = function() {\n\t\t\t\tif ( !hooks.unqueued ) {\n\t\t\t\t\toldfire();\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\t\thooks.unqueued++;\n\n\t\tanim.always( function() {\n\n\t\t\t// Ensure the complete handler is called before this completes\n\t\t\tanim.always( function() {\n\t\t\t\thooks.unqueued--;\n\t\t\t\tif ( !jQuery.queue( elem, \"fx\" ).length ) {\n\t\t\t\t\thooks.empty.fire();\n\t\t\t\t}\n\t\t\t} );\n\t\t} );\n\t}\n\n\t// Detect show/hide animations\n\tfor ( prop in props ) {\n\t\tvalue = props[ prop ];\n\t\tif ( rfxtypes.test( value ) ) {\n\t\t\tdelete props[ prop ];\n\t\t\ttoggle = toggle || value === \"toggle\";\n\t\t\tif ( value === ( hidden ? \"hide\" : \"show\" ) ) {\n\n\t\t\t\t// Pretend to be hidden if this is a \"show\" and\n\t\t\t\t// there is still data from a stopped show/hide\n\t\t\t\tif ( value === \"show\" && dataShow && dataShow[ prop ] !== undefined ) {\n\t\t\t\t\thidden = true;\n\n\t\t\t\t// Ignore all other no-op show/hide data\n\t\t\t\t} else {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\t\t\t}\n\t\t\torig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );\n\t\t}\n\t}\n\n\t// Bail out if this is a no-op like .hide().hide()\n\tpropTween = !jQuery.isEmptyObject( props );\n\tif ( !propTween && jQuery.isEmptyObject( orig ) ) {\n\t\treturn;\n\t}\n\n\t// Restrict \"overflow\" and \"display\" styles during box animations\n\tif ( isBox && elem.nodeType === 1 ) {\n\n\t\t// Support: IE <=9 - 11, Edge 12 - 15\n\t\t// Record all 3 overflow attributes because IE does not infer the shorthand\n\t\t// from identically-valued overflowX and overflowY and Edge just mirrors\n\t\t// the overflowX value there.\n\t\topts.overflow = [ style.overflow, style.overflowX, style.overflowY ];\n\n\t\t// Identify a display type, preferring old show/hide data over the CSS cascade\n\t\trestoreDisplay = dataShow && dataShow.display;\n\t\tif ( restoreDisplay == null ) {\n\t\t\trestoreDisplay = dataPriv.get( elem, \"display\" );\n\t\t}\n\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\tif ( display === \"none\" ) {\n\t\t\tif ( restoreDisplay ) {\n\t\t\t\tdisplay = restoreDisplay;\n\t\t\t} else {\n\n\t\t\t\t// Get nonempty value(s) by temporarily forcing visibility\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t\trestoreDisplay = elem.style.display || restoreDisplay;\n\t\t\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\t\t\tshowHide( [ elem ] );\n\t\t\t}\n\t\t}\n\n\t\t// Animate inline elements as inline-block\n\t\tif ( display === \"inline\" || display === \"inline-block\" && restoreDisplay != null ) {\n\t\t\tif ( jQuery.css( elem, \"float\" ) === \"none\" ) {\n\n\t\t\t\t// Restore the original display value at the end of pure show/hide animations\n\t\t\t\tif ( !propTween ) {\n\t\t\t\t\tanim.done( function() {\n\t\t\t\t\t\tstyle.display = restoreDisplay;\n\t\t\t\t\t} );\n\t\t\t\t\tif ( restoreDisplay == null ) {\n\t\t\t\t\t\tdisplay = style.display;\n\t\t\t\t\t\trestoreDisplay = display === \"none\" ? \"\" : display;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tstyle.display = \"inline-block\";\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( opts.overflow ) {\n\t\tstyle.overflow = \"hidden\";\n\t\tanim.always( function() {\n\t\t\tstyle.overflow = opts.overflow[ 0 ];\n\t\t\tstyle.overflowX = opts.overflow[ 1 ];\n\t\t\tstyle.overflowY = opts.overflow[ 2 ];\n\t\t} );\n\t}\n\n\t// Implement show/hide animations\n\tpropTween = false;\n\tfor ( prop in orig ) {\n\n\t\t// General show/hide setup for this element animation\n\t\tif ( !propTween ) {\n\t\t\tif ( dataShow ) {\n\t\t\t\tif ( \"hidden\" in dataShow ) {\n\t\t\t\t\thidden = dataShow.hidden;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tdataShow = dataPriv.access( elem, \"fxshow\", { display: restoreDisplay } );\n\t\t\t}\n\n\t\t\t// Store hidden/visible for toggle so `.stop().toggle()` \"reverses\"\n\t\t\tif ( toggle ) {\n\t\t\t\tdataShow.hidden = !hidden;\n\t\t\t}\n\n\t\t\t// Show elements before animating them\n\t\t\tif ( hidden ) {\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t}\n\n\t\t\t/* eslint-disable no-loop-func */\n\n\t\t\tanim.done( function() {\n\n\t\t\t\t/* eslint-enable no-loop-func */\n\n\t\t\t\t// The final step of a \"hide\" animation is actually hiding the element\n\t\t\t\tif ( !hidden ) {\n\t\t\t\t\tshowHide( [ elem ] );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( elem, \"fxshow\" );\n\t\t\t\tfor ( prop in orig ) {\n\t\t\t\t\tjQuery.style( elem, prop, orig[ prop ] );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\t// Per-property setup\n\t\tpropTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );\n\t\tif ( !( prop in dataShow ) ) {\n\t\t\tdataShow[ prop ] = propTween.start;\n\t\t\tif ( hidden ) {\n\t\t\t\tpropTween.end = propTween.start;\n\t\t\t\tpropTween.start = 0;\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction propFilter( props, specialEasing ) {\n\tvar index, name, easing, value, hooks;\n\n\t// camelCase, specialEasing and expand cssHook pass\n\tfor ( index in props ) {\n\t\tname = camelCase( index );\n\t\teasing = specialEasing[ name ];\n\t\tvalue = props[ index ];\n\t\tif ( Array.isArray( value ) ) {\n\t\t\teasing = value[ 1 ];\n\t\t\tvalue = props[ index ] = value[ 0 ];\n\t\t}\n\n\t\tif ( index !== name ) {\n\t\t\tprops[ name ] = value;\n\t\t\tdelete props[ index ];\n\t\t}\n\n\t\thooks = jQuery.cssHooks[ name ];\n\t\tif ( hooks && \"expand\" in hooks ) {\n\t\t\tvalue = hooks.expand( value );\n\t\t\tdelete props[ name ];\n\n\t\t\t// Not quite $.extend, this won't overwrite existing keys.\n\t\t\t// Reusing 'index' because we have the correct \"name\"\n\t\t\tfor ( index in value ) {\n\t\t\t\tif ( !( index in props ) ) {\n\t\t\t\t\tprops[ index ] = value[ index ];\n\t\t\t\t\tspecialEasing[ index ] = easing;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tspecialEasing[ name ] = easing;\n\t\t}\n\t}\n}\n\nfunction Animation( elem, properties, options ) {\n\tvar result,\n\t\tstopped,\n\t\tindex = 0,\n\t\tlength = Animation.prefilters.length,\n\t\tdeferred = jQuery.Deferred().always( function() {\n\n\t\t\t// Don't match elem in the :animated selector\n\t\t\tdelete tick.elem;\n\t\t} ),\n\t\ttick = function() {\n\t\t\tif ( stopped ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t\tvar currentTime = fxNow || createFxNow(),\n\t\t\t\tremaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),\n\n\t\t\t\t// Support: Android 2.3 only\n\t\t\t\t// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (trac-12497)\n\t\t\t\ttemp = remaining / animation.duration || 0,\n\t\t\t\tpercent = 1 - temp,\n\t\t\t\tindex = 0,\n\t\t\t\tlength = animation.tweens.length;\n\n\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\tanimation.tweens[ index ].run( percent );\n\t\t\t}\n\n\t\t\tdeferred.notifyWith( elem, [ animation, percent, remaining ] );\n\n\t\t\t// If there's more to do, yield\n\t\t\tif ( percent < 1 && length ) {\n\t\t\t\treturn remaining;\n\t\t\t}\n\n\t\t\t// If this was an empty animation, synthesize a final progress notification\n\t\t\tif ( !length ) {\n\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t}\n\n\t\t\t// Resolve the animation and report its conclusion\n\t\t\tdeferred.resolveWith( elem, [ animation ] );\n\t\t\treturn false;\n\t\t},\n\t\tanimation = deferred.promise( {\n\t\t\telem: elem,\n\t\t\tprops: jQuery.extend( {}, properties ),\n\t\t\topts: jQuery.extend( true, {\n\t\t\t\tspecialEasing: {},\n\t\t\t\teasing: jQuery.easing._default\n\t\t\t}, options ),\n\t\t\toriginalProperties: properties,\n\t\t\toriginalOptions: options,\n\t\t\tstartTime: fxNow || createFxNow(),\n\t\t\tduration: options.duration,\n\t\t\ttweens: [],\n\t\t\tcreateTween: function( prop, end ) {\n\t\t\t\tvar tween = jQuery.Tween( elem, animation.opts, prop, end,\n\t\t\t\t\tanimation.opts.specialEasing[ prop ] || animation.opts.easing );\n\t\t\t\tanimation.tweens.push( tween );\n\t\t\t\treturn tween;\n\t\t\t},\n\t\t\tstop: function( gotoEnd ) {\n\t\t\t\tvar index = 0,\n\n\t\t\t\t\t// If we are going to the end, we want to run all the tweens\n\t\t\t\t\t// otherwise we skip this part\n\t\t\t\t\tlength = gotoEnd ? animation.tweens.length : 0;\n\t\t\t\tif ( stopped ) {\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t\tstopped = true;\n\t\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\t\tanimation.tweens[ index ].run( 1 );\n\t\t\t\t}\n\n\t\t\t\t// Resolve when we played the last frame; otherwise, reject\n\t\t\t\tif ( gotoEnd ) {\n\t\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t\t\tdeferred.resolveWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t} else {\n\t\t\t\t\tdeferred.rejectWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t}\n\t\t} ),\n\t\tprops = animation.props;\n\n\tpropFilter( props, animation.opts.specialEasing );\n\n\tfor ( ; index < length; index++ ) {\n\t\tresult = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );\n\t\tif ( result ) {\n\t\t\tif ( isFunction( result.stop ) ) {\n\t\t\t\tjQuery._queueHooks( animation.elem, animation.opts.queue ).stop =\n\t\t\t\t\tresult.stop.bind( result );\n\t\t\t}\n\t\t\treturn result;\n\t\t}\n\t}\n\n\tjQuery.map( props, createTween, animation );\n\n\tif ( isFunction( animation.opts.start ) ) {\n\t\tanimation.opts.start.call( elem, animation );\n\t}\n\n\t// Attach callbacks from options\n\tanimation\n\t\t.progress( animation.opts.progress )\n\t\t.done( animation.opts.done, animation.opts.complete )\n\t\t.fail( animation.opts.fail )\n\t\t.always( animation.opts.always );\n\n\tjQuery.fx.timer(\n\t\tjQuery.extend( tick, {\n\t\t\telem: elem,\n\t\t\tanim: animation,\n\t\t\tqueue: animation.opts.queue\n\t\t} )\n\t);\n\n\treturn animation;\n}\n\njQuery.Animation = jQuery.extend( Animation, {\n\n\ttweeners: {\n\t\t\"*\": [ function( prop, value ) {\n\t\t\tvar tween = this.createTween( prop, value );\n\t\t\tadjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );\n\t\t\treturn tween;\n\t\t} ]\n\t},\n\n\ttweener: function( props, callback ) {\n\t\tif ( isFunction( props ) ) {\n\t\t\tcallback = props;\n\t\t\tprops = [ \"*\" ];\n\t\t} else {\n\t\t\tprops = props.match( rnothtmlwhite );\n\t\t}\n\n\t\tvar prop,\n\t\t\tindex = 0,\n\t\t\tlength = props.length;\n\n\t\tfor ( ; index < length; index++ ) {\n\t\t\tprop = props[ index ];\n\t\t\tAnimation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];\n\t\t\tAnimation.tweeners[ prop ].unshift( callback );\n\t\t}\n\t},\n\n\tprefilters: [ defaultPrefilter ],\n\n\tprefilter: function( callback, prepend ) {\n\t\tif ( prepend ) {\n\t\t\tAnimation.prefilters.unshift( callback );\n\t\t} else {\n\t\t\tAnimation.prefilters.push( callback );\n\t\t}\n\t}\n} );\n\njQuery.speed = function( speed, easing, fn ) {\n\tvar opt = speed && typeof speed === \"object\" ? jQuery.extend( {}, speed ) : {\n\t\tcomplete: fn || !fn && easing ||\n\t\t\tisFunction( speed ) && speed,\n\t\tduration: speed,\n\t\teasing: fn && easing || easing && !isFunction( easing ) && easing\n\t};\n\n\t// Go to the end state if fx are off\n\tif ( jQuery.fx.off ) {\n\t\topt.duration = 0;\n\n\t} else {\n\t\tif ( typeof opt.duration !== \"number\" ) {\n\t\t\tif ( opt.duration in jQuery.fx.speeds ) {\n\t\t\t\topt.duration = jQuery.fx.speeds[ opt.duration ];\n\n\t\t\t} else {\n\t\t\t\topt.duration = jQuery.fx.speeds._default;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Normalize opt.queue - true/undefined/null -> \"fx\"\n\tif ( opt.queue == null || opt.queue === true ) {\n\t\topt.queue = \"fx\";\n\t}\n\n\t// Queueing\n\topt.old = opt.complete;\n\n\topt.complete = function() {\n\t\tif ( isFunction( opt.old ) ) {\n\t\t\topt.old.call( this );\n\t\t}\n\n\t\tif ( opt.queue ) {\n\t\t\tjQuery.dequeue( this, opt.queue );\n\t\t}\n\t};\n\n\treturn opt;\n};\n\njQuery.fn.extend( {\n\tfadeTo: function( speed, to, easing, callback ) {\n\n\t\t// Show any hidden elements after setting opacity to 0\n\t\treturn this.filter( isHiddenWithinTree ).css( \"opacity\", 0 ).show()\n\n\t\t\t// Animate to the value specified\n\t\t\t.end().animate( { opacity: to }, speed, easing, callback );\n\t},\n\tanimate: function( prop, speed, easing, callback ) {\n\t\tvar empty = jQuery.isEmptyObject( prop ),\n\t\t\toptall = jQuery.speed( speed, easing, callback ),\n\t\t\tdoAnimation = function() {\n\n\t\t\t\t// Operate on a copy of prop so per-property easing won't be lost\n\t\t\t\tvar anim = Animation( this, jQuery.extend( {}, prop ), optall );\n\n\t\t\t\t// Empty animations, or finishing resolves immediately\n\t\t\t\tif ( empty || dataPriv.get( this, \"finish\" ) ) {\n\t\t\t\t\tanim.stop( true );\n\t\t\t\t}\n\t\t\t};\n\n\t\tdoAnimation.finish = doAnimation;\n\n\t\treturn empty || optall.queue === false ?\n\t\t\tthis.each( doAnimation ) :\n\t\t\tthis.queue( optall.queue, doAnimation );\n\t},\n\tstop: function( type, clearQueue, gotoEnd ) {\n\t\tvar stopQueue = function( hooks ) {\n\t\t\tvar stop = hooks.stop;\n\t\t\tdelete hooks.stop;\n\t\t\tstop( gotoEnd );\n\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tgotoEnd = clearQueue;\n\t\t\tclearQueue = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\tif ( clearQueue ) {\n\t\t\tthis.queue( type || \"fx\", [] );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar dequeue = true,\n\t\t\t\tindex = type != null && type + \"queueHooks\",\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tdata = dataPriv.get( this );\n\n\t\t\tif ( index ) {\n\t\t\t\tif ( data[ index ] && data[ index ].stop ) {\n\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tfor ( index in data ) {\n\t\t\t\t\tif ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {\n\t\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this &&\n\t\t\t\t\t( type == null || timers[ index ].queue === type ) ) {\n\n\t\t\t\t\ttimers[ index ].anim.stop( gotoEnd );\n\t\t\t\t\tdequeue = false;\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Start the next in the queue if the last step wasn't forced.\n\t\t\t// Timers currently will call their complete callbacks, which\n\t\t\t// will dequeue but only if they were gotoEnd.\n\t\t\tif ( dequeue || !gotoEnd ) {\n\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t}\n\t\t} );\n\t},\n\tfinish: function( type ) {\n\t\tif ( type !== false ) {\n\t\t\ttype = type || \"fx\";\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tvar index,\n\t\t\t\tdata = dataPriv.get( this ),\n\t\t\t\tqueue = data[ type + \"queue\" ],\n\t\t\t\thooks = data[ type + \"queueHooks\" ],\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tlength = queue ? queue.length : 0;\n\n\t\t\t// Enable finishing flag on private data\n\t\t\tdata.finish = true;\n\n\t\t\t// Empty the queue first\n\t\t\tjQuery.queue( this, type, [] );\n\n\t\t\tif ( hooks && hooks.stop ) {\n\t\t\t\thooks.stop.call( this, true );\n\t\t\t}\n\n\t\t\t// Look for any active animations, and finish them\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this && timers[ index ].queue === type ) {\n\t\t\t\t\ttimers[ index ].anim.stop( true );\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Look for any animations in the old queue and finish them\n\t\t\tfor ( index = 0; index < length; index++ ) {\n\t\t\t\tif ( queue[ index ] && queue[ index ].finish ) {\n\t\t\t\t\tqueue[ index ].finish.call( this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Turn off finishing flag\n\t\t\tdelete data.finish;\n\t\t} );\n\t}\n} );\n\njQuery.each( [ \"toggle\", \"show\", \"hide\" ], function( _i, name ) {\n\tvar cssFn = jQuery.fn[ name ];\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn speed == null || typeof speed === \"boolean\" ?\n\t\t\tcssFn.apply( this, arguments ) :\n\t\t\tthis.animate( genFx( name, true ), speed, easing, callback );\n\t};\n} );\n\n// Generate shortcuts for custom animations\njQuery.each( {\n\tslideDown: genFx( \"show\" ),\n\tslideUp: genFx( \"hide\" ),\n\tslideToggle: genFx( \"toggle\" ),\n\tfadeIn: { opacity: \"show\" },\n\tfadeOut: { opacity: \"hide\" },\n\tfadeToggle: { opacity: \"toggle\" }\n}, function( name, props ) {\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn this.animate( props, speed, easing, callback );\n\t};\n} );\n\njQuery.timers = [];\njQuery.fx.tick = function() {\n\tvar timer,\n\t\ti = 0,\n\t\ttimers = jQuery.timers;\n\n\tfxNow = Date.now();\n\n\tfor ( ; i < timers.length; i++ ) {\n\t\ttimer = timers[ i ];\n\n\t\t// Run the timer and safely remove it when done (allowing for external removal)\n\t\tif ( !timer() && timers[ i ] === timer ) {\n\t\t\ttimers.splice( i--, 1 );\n\t\t}\n\t}\n\n\tif ( !timers.length ) {\n\t\tjQuery.fx.stop();\n\t}\n\tfxNow = undefined;\n};\n\njQuery.fx.timer = function( timer ) {\n\tjQuery.timers.push( timer );\n\tjQuery.fx.start();\n};\n\njQuery.fx.interval = 13;\njQuery.fx.start = function() {\n\tif ( inProgress ) {\n\t\treturn;\n\t}\n\n\tinProgress = true;\n\tschedule();\n};\n\njQuery.fx.stop = function() {\n\tinProgress = null;\n};\n\njQuery.fx.speeds = {\n\tslow: 600,\n\tfast: 200,\n\n\t// Default speed\n\t_default: 400\n};\n\n\n// Based off of the plugin by Clint Helfers, with permission.\njQuery.fn.delay = function( time, type ) {\n\ttime = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;\n\ttype = type || \"fx\";\n\n\treturn this.queue( type, function( next, hooks ) {\n\t\tvar timeout = window.setTimeout( next, time );\n\t\thooks.stop = function() {\n\t\t\twindow.clearTimeout( timeout );\n\t\t};\n\t} );\n};\n\n\n( function() {\n\tvar input = document.createElement( \"input\" ),\n\t\tselect = document.createElement( \"select\" ),\n\t\topt = select.appendChild( document.createElement( \"option\" ) );\n\n\tinput.type = \"checkbox\";\n\n\t// Support: Android <=4.3 only\n\t// Default value for a checkbox should be \"on\"\n\tsupport.checkOn = input.value !== \"\";\n\n\t// Support: IE <=11 only\n\t// Must access selectedIndex to make default options select\n\tsupport.optSelected = opt.selected;\n\n\t// Support: IE <=11 only\n\t// An input loses its value after becoming a radio\n\tinput = document.createElement( \"input\" );\n\tinput.value = \"t\";\n\tinput.type = \"radio\";\n\tsupport.radioValue = input.value === \"t\";\n} )();\n\n\nvar boolHook,\n\tattrHandle = jQuery.expr.attrHandle;\n\njQuery.fn.extend( {\n\tattr: function( name, value ) {\n\t\treturn access( this, jQuery.attr, name, value, arguments.length > 1 );\n\t},\n\n\tremoveAttr: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.removeAttr( this, name );\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tattr: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set attributes on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Fallback to prop when attributes are not supported\n\t\tif ( typeof elem.getAttribute === \"undefined\" ) {\n\t\t\treturn jQuery.prop( elem, name, value );\n\t\t}\n\n\t\t// Attribute hooks are determined by the lowercase version\n\t\t// Grab necessary hook if one is defined\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\t\t\thooks = jQuery.attrHooks[ name.toLowerCase() ] ||\n\t\t\t\t( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( value === null ) {\n\t\t\t\tjQuery.removeAttr( elem, name );\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\telem.setAttribute( name, value + \"\" );\n\t\t\treturn value;\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\tret = jQuery.find.attr( elem, name );\n\n\t\t// Non-existent attributes return null, we normalize to undefined\n\t\treturn ret == null ? undefined : ret;\n\t},\n\n\tattrHooks: {\n\t\ttype: {\n\t\t\tset: function( elem, value ) {\n\t\t\t\tif ( !support.radioValue && value === \"radio\" &&\n\t\t\t\t\tnodeName( elem, \"input\" ) ) {\n\t\t\t\t\tvar val = elem.value;\n\t\t\t\t\telem.setAttribute( \"type\", value );\n\t\t\t\t\tif ( val ) {\n\t\t\t\t\t\telem.value = val;\n\t\t\t\t\t}\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\tremoveAttr: function( elem, value ) {\n\t\tvar name,\n\t\t\ti = 0,\n\n\t\t\t// Attribute names can contain non-HTML whitespace characters\n\t\t\t// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n\t\t\tattrNames = value && value.match( rnothtmlwhite );\n\n\t\tif ( attrNames && elem.nodeType === 1 ) {\n\t\t\twhile ( ( name = attrNames[ i++ ] ) ) {\n\t\t\t\telem.removeAttribute( name );\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Hooks for boolean attributes\nboolHook = {\n\tset: function( elem, value, name ) {\n\t\tif ( value === false ) {\n\n\t\t\t// Remove boolean attributes when set to false\n\t\t\tjQuery.removeAttr( elem, name );\n\t\t} else {\n\t\t\telem.setAttribute( name, name );\n\t\t}\n\t\treturn name;\n\t}\n};\n\njQuery.each( jQuery.expr.match.bool.source.match( /\\w+/g ), function( _i, name ) {\n\tvar getter = attrHandle[ name ] || jQuery.find.attr;\n\n\tattrHandle[ name ] = function( elem, name, isXML ) {\n\t\tvar ret, handle,\n\t\t\tlowercaseName = name.toLowerCase();\n\n\t\tif ( !isXML ) {\n\n\t\t\t// Avoid an infinite loop by temporarily removing this function from the getter\n\t\t\thandle = attrHandle[ lowercaseName ];\n\t\t\tattrHandle[ lowercaseName ] = ret;\n\t\t\tret = getter( elem, name, isXML ) != null ?\n\t\t\t\tlowercaseName :\n\t\t\t\tnull;\n\t\t\tattrHandle[ lowercaseName ] = handle;\n\t\t}\n\t\treturn ret;\n\t};\n} );\n\n\n\n\nvar rfocusable = /^(?:input|select|textarea|button)$/i,\n\trclickable = /^(?:a|area)$/i;\n\njQuery.fn.extend( {\n\tprop: function( name, value ) {\n\t\treturn access( this, jQuery.prop, name, value, arguments.length > 1 );\n\t},\n\n\tremoveProp: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tdelete this[ jQuery.propFix[ name ] || name ];\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tprop: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set properties on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// Fix name and attach hooks\n\t\t\tname = jQuery.propFix[ name ] || name;\n\t\t\thooks = jQuery.propHooks[ name ];\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\treturn ( elem[ name ] = value );\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\treturn elem[ name ];\n\t},\n\n\tpropHooks: {\n\t\ttabIndex: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\t// Support: IE <=9 - 11 only\n\t\t\t\t// elem.tabIndex doesn't always return the\n\t\t\t\t// correct value when it hasn't been explicitly set\n\t\t\t\t// Use proper attribute retrieval (trac-12072)\n\t\t\t\tvar tabindex = jQuery.find.attr( elem, \"tabindex\" );\n\n\t\t\t\tif ( tabindex ) {\n\t\t\t\t\treturn parseInt( tabindex, 10 );\n\t\t\t\t}\n\n\t\t\t\tif (\n\t\t\t\t\trfocusable.test( elem.nodeName ) ||\n\t\t\t\t\trclickable.test( elem.nodeName ) &&\n\t\t\t\t\telem.href\n\t\t\t\t) {\n\t\t\t\t\treturn 0;\n\t\t\t\t}\n\n\t\t\t\treturn -1;\n\t\t\t}\n\t\t}\n\t},\n\n\tpropFix: {\n\t\t\"for\": \"htmlFor\",\n\t\t\"class\": \"className\"\n\t}\n} );\n\n// Support: IE <=11 only\n// Accessing the selectedIndex property\n// forces the browser to respect setting selected\n// on the option\n// The getter ensures a default option is selected\n// when in an optgroup\n// eslint rule \"no-unused-expressions\" is disabled for this code\n// since it considers such accessions noop\nif ( !support.optSelected ) {\n\tjQuery.propHooks.selected = {\n\t\tget: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent && parent.parentNode ) {\n\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t}\n\t\t\treturn null;\n\t\t},\n\t\tset: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent ) {\n\t\t\t\tparent.selectedIndex;\n\n\t\t\t\tif ( parent.parentNode ) {\n\t\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\njQuery.each( [\n\t\"tabIndex\",\n\t\"readOnly\",\n\t\"maxLength\",\n\t\"cellSpacing\",\n\t\"cellPadding\",\n\t\"rowSpan\",\n\t\"colSpan\",\n\t\"useMap\",\n\t\"frameBorder\",\n\t\"contentEditable\"\n], function() {\n\tjQuery.propFix[ this.toLowerCase() ] = this;\n} );\n\n\n\n\n\t// Strip and collapse whitespace according to HTML spec\n\t// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\n\tfunction stripAndCollapse( value ) {\n\t\tvar tokens = value.match( rnothtmlwhite ) || [];\n\t\treturn tokens.join( \" \" );\n\t}\n\n\nfunction getClass( elem ) {\n\treturn elem.getAttribute && elem.getAttribute( \"class\" ) || \"\";\n}\n\nfunction classesToArray( value ) {\n\tif ( Array.isArray( value ) ) {\n\t\treturn value;\n\t}\n\tif ( typeof value === \"string\" ) {\n\t\treturn value.match( rnothtmlwhite ) || [];\n\t}\n\treturn [];\n}\n\njQuery.fn.extend( {\n\taddClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).addClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\t\t\t\t\t\tif ( cur.indexOf( \" \" + className + \" \" ) < 0 ) {\n\t\t\t\t\t\t\tcur += className + \" \";\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tremoveClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tif ( !arguments.length ) {\n\t\t\treturn this.attr( \"class\", \"\" );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\n\t\t\t\t// This expression is here for better compressibility (see addClass)\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t\t// Remove *all* instances\n\t\t\t\t\t\twhile ( cur.indexOf( \" \" + className + \" \" ) > -1 ) {\n\t\t\t\t\t\t\tcur = cur.replace( \" \" + className + \" \", \" \" );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\ttoggleClass: function( value, stateVal ) {\n\t\tvar classNames, className, i, self,\n\t\t\ttype = typeof value,\n\t\t\tisValidValue = type === \"string\" || Array.isArray( value );\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).toggleClass(\n\t\t\t\t\tvalue.call( this, i, getClass( this ), stateVal ),\n\t\t\t\t\tstateVal\n\t\t\t\t);\n\t\t\t} );\n\t\t}\n\n\t\tif ( typeof stateVal === \"boolean\" && isValidValue ) {\n\t\t\treturn stateVal ? this.addClass( value ) : this.removeClass( value );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\treturn this.each( function() {\n\t\t\tif ( isValidValue ) {\n\n\t\t\t\t// Toggle individual class names\n\t\t\t\tself = jQuery( this );\n\n\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t// Check each className given, space separated list\n\t\t\t\t\tif ( self.hasClass( className ) ) {\n\t\t\t\t\t\tself.removeClass( className );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tself.addClass( className );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t// Toggle whole class name\n\t\t\t} else if ( value === undefined || type === \"boolean\" ) {\n\t\t\t\tclassName = getClass( this );\n\t\t\t\tif ( className ) {\n\n\t\t\t\t\t// Store className if set\n\t\t\t\t\tdataPriv.set( this, \"__className__\", className );\n\t\t\t\t}\n\n\t\t\t\t// If the element has a class name or if we're passed `false`,\n\t\t\t\t// then remove the whole classname (if there was one, the above saved it).\n\t\t\t\t// Otherwise bring back whatever was previously saved (if anything),\n\t\t\t\t// falling back to the empty string if nothing was stored.\n\t\t\t\tif ( this.setAttribute ) {\n\t\t\t\t\tthis.setAttribute( \"class\",\n\t\t\t\t\t\tclassName || value === false ?\n\t\t\t\t\t\t\t\"\" :\n\t\t\t\t\t\t\tdataPriv.get( this, \"__className__\" ) || \"\"\n\t\t\t\t\t);\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\thasClass: function( selector ) {\n\t\tvar className, elem,\n\t\t\ti = 0;\n\n\t\tclassName = \" \" + selector + \" \";\n\t\twhile ( ( elem = this[ i++ ] ) ) {\n\t\t\tif ( elem.nodeType === 1 &&\n\t\t\t\t( \" \" + stripAndCollapse( getClass( elem ) ) + \" \" ).indexOf( className ) > -1 ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n} );\n\n\n\n\nvar rreturn = /\\r/g;\n\njQuery.fn.extend( {\n\tval: function( value ) {\n\t\tvar hooks, ret, valueIsFunction,\n\t\t\telem = this[ 0 ];\n\n\t\tif ( !arguments.length ) {\n\t\t\tif ( elem ) {\n\t\t\t\thooks = jQuery.valHooks[ elem.type ] ||\n\t\t\t\t\tjQuery.valHooks[ elem.nodeName.toLowerCase() ];\n\n\t\t\t\tif ( hooks &&\n\t\t\t\t\t\"get\" in hooks &&\n\t\t\t\t\t( ret = hooks.get( elem, \"value\" ) ) !== undefined\n\t\t\t\t) {\n\t\t\t\t\treturn ret;\n\t\t\t\t}\n\n\t\t\t\tret = elem.value;\n\n\t\t\t\t// Handle most common string cases\n\t\t\t\tif ( typeof ret === \"string\" ) {\n\t\t\t\t\treturn ret.replace( rreturn, \"\" );\n\t\t\t\t}\n\n\t\t\t\t// Handle cases where value is null/undef or number\n\t\t\t\treturn ret == null ? \"\" : ret;\n\t\t\t}\n\n\t\t\treturn;\n\t\t}\n\n\t\tvalueIsFunction = isFunction( value );\n\n\t\treturn this.each( function( i ) {\n\t\t\tvar val;\n\n\t\t\tif ( this.nodeType !== 1 ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\tval = value.call( this, i, jQuery( this ).val() );\n\t\t\t} else {\n\t\t\t\tval = value;\n\t\t\t}\n\n\t\t\t// Treat null/undefined as \"\"; convert numbers to string\n\t\t\tif ( val == null ) {\n\t\t\t\tval = \"\";\n\n\t\t\t} else if ( typeof val === \"number\" ) {\n\t\t\t\tval += \"\";\n\n\t\t\t} else if ( Array.isArray( val ) ) {\n\t\t\t\tval = jQuery.map( val, function( value ) {\n\t\t\t\t\treturn value == null ? \"\" : value + \"\";\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\thooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];\n\n\t\t\t// If set returns undefined, fall back to normal setting\n\t\t\tif ( !hooks || !( \"set\" in hooks ) || hooks.set( this, val, \"value\" ) === undefined ) {\n\t\t\t\tthis.value = val;\n\t\t\t}\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tvalHooks: {\n\t\toption: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\tvar val = jQuery.find.attr( elem, \"value\" );\n\t\t\t\treturn val != null ?\n\t\t\t\t\tval :\n\n\t\t\t\t\t// Support: IE <=10 - 11 only\n\t\t\t\t\t// option.text throws exceptions (trac-14686, trac-14858)\n\t\t\t\t\t// Strip and collapse whitespace\n\t\t\t\t\t// https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n\t\t\t\t\tstripAndCollapse( jQuery.text( elem ) );\n\t\t\t}\n\t\t},\n\t\tselect: {\n\t\t\tget: function( elem ) {\n\t\t\t\tvar value, option, i,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tindex = elem.selectedIndex,\n\t\t\t\t\tone = elem.type === \"select-one\",\n\t\t\t\t\tvalues = one ? null : [],\n\t\t\t\t\tmax = one ? index + 1 : options.length;\n\n\t\t\t\tif ( index < 0 ) {\n\t\t\t\t\ti = max;\n\n\t\t\t\t} else {\n\t\t\t\t\ti = one ? index : 0;\n\t\t\t\t}\n\n\t\t\t\t// Loop through all the selected options\n\t\t\t\tfor ( ; i < max; i++ ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t// IE8-9 doesn't update selected after form reset (trac-2551)\n\t\t\t\t\tif ( ( option.selected || i === index ) &&\n\n\t\t\t\t\t\t\t// Don't return options that are disabled or in a disabled optgroup\n\t\t\t\t\t\t\t!option.disabled &&\n\t\t\t\t\t\t\t( !option.parentNode.disabled ||\n\t\t\t\t\t\t\t\t!nodeName( option.parentNode, \"optgroup\" ) ) ) {\n\n\t\t\t\t\t\t// Get the specific value for the option\n\t\t\t\t\t\tvalue = jQuery( option ).val();\n\n\t\t\t\t\t\t// We don't need an array for one selects\n\t\t\t\t\t\tif ( one ) {\n\t\t\t\t\t\t\treturn value;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Multi-Selects return an array\n\t\t\t\t\t\tvalues.push( value );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn values;\n\t\t\t},\n\n\t\t\tset: function( elem, value ) {\n\t\t\t\tvar optionSet, option,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tvalues = jQuery.makeArray( value ),\n\t\t\t\t\ti = options.length;\n\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t/* eslint-disable no-cond-assign */\n\n\t\t\t\t\tif ( option.selected =\n\t\t\t\t\t\tjQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1\n\t\t\t\t\t) {\n\t\t\t\t\t\toptionSet = true;\n\t\t\t\t\t}\n\n\t\t\t\t\t/* eslint-enable no-cond-assign */\n\t\t\t\t}\n\n\t\t\t\t// Force browsers to behave consistently when non-matching value is set\n\t\t\t\tif ( !optionSet ) {\n\t\t\t\t\telem.selectedIndex = -1;\n\t\t\t\t}\n\t\t\t\treturn values;\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Radios and checkboxes getter/setter\njQuery.each( [ \"radio\", \"checkbox\" ], function() {\n\tjQuery.valHooks[ this ] = {\n\t\tset: function( elem, value ) {\n\t\t\tif ( Array.isArray( value ) ) {\n\t\t\t\treturn ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );\n\t\t\t}\n\t\t}\n\t};\n\tif ( !support.checkOn ) {\n\t\tjQuery.valHooks[ this ].get = function( elem ) {\n\t\t\treturn elem.getAttribute( \"value\" ) === null ? \"on\" : elem.value;\n\t\t};\n\t}\n} );\n\n\n\n\n// Return jQuery for attributes-only inclusion\nvar location = window.location;\n\nvar nonce = { guid: Date.now() };\n\nvar rquery = ( /\\?/ );\n\n\n\n// Cross-browser xml parsing\njQuery.parseXML = function( data ) {\n\tvar xml, parserErrorElem;\n\tif ( !data || typeof data !== \"string\" ) {\n\t\treturn null;\n\t}\n\n\t// Support: IE 9 - 11 only\n\t// IE throws on parseFromString with invalid input.\n\ttry {\n\t\txml = ( new window.DOMParser() ).parseFromString( data, \"text/xml\" );\n\t} catch ( e ) {}\n\n\tparserErrorElem = xml && xml.getElementsByTagName( \"parsererror\" )[ 0 ];\n\tif ( !xml || parserErrorElem ) {\n\t\tjQuery.error( \"Invalid XML: \" + (\n\t\t\tparserErrorElem ?\n\t\t\t\tjQuery.map( parserErrorElem.childNodes, function( el ) {\n\t\t\t\t\treturn el.textContent;\n\t\t\t\t} ).join( \"\\n\" ) :\n\t\t\t\tdata\n\t\t) );\n\t}\n\treturn xml;\n};\n\n\nvar rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,\n\tstopPropagationCallback = function( e ) {\n\t\te.stopPropagation();\n\t};\n\njQuery.extend( jQuery.event, {\n\n\ttrigger: function( event, data, elem, onlyHandlers ) {\n\n\t\tvar i, cur, tmp, bubbleType, ontype, handle, special, lastElement,\n\t\t\teventPath = [ elem || document ],\n\t\t\ttype = hasOwn.call( event, \"type\" ) ? event.type : event,\n\t\t\tnamespaces = hasOwn.call( event, \"namespace\" ) ? event.namespace.split( \".\" ) : [];\n\n\t\tcur = lastElement = tmp = elem = elem || document;\n\n\t\t// Don't do events on text and comment nodes\n\t\tif ( elem.nodeType === 3 || elem.nodeType === 8 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// focus/blur morphs to focusin/out; ensure we're not firing them right now\n\t\tif ( rfocusMorph.test( type + jQuery.event.triggered ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type.indexOf( \".\" ) > -1 ) {\n\n\t\t\t// Namespaced trigger; create a regexp to match event type in handle()\n\t\t\tnamespaces = type.split( \".\" );\n\t\t\ttype = namespaces.shift();\n\t\t\tnamespaces.sort();\n\t\t}\n\t\tontype = type.indexOf( \":\" ) < 0 && \"on\" + type;\n\n\t\t// Caller can pass in a jQuery.Event object, Object, or just an event type string\n\t\tevent = event[ jQuery.expando ] ?\n\t\t\tevent :\n\t\t\tnew jQuery.Event( type, typeof event === \"object\" && event );\n\n\t\t// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n\t\tevent.isTrigger = onlyHandlers ? 2 : 3;\n\t\tevent.namespace = namespaces.join( \".\" );\n\t\tevent.rnamespace = event.namespace ?\n\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" ) :\n\t\t\tnull;\n\n\t\t// Clean up the event in case it is being reused\n\t\tevent.result = undefined;\n\t\tif ( !event.target ) {\n\t\t\tevent.target = elem;\n\t\t}\n\n\t\t// Clone any incoming data and prepend the event, creating the handler arg list\n\t\tdata = data == null ?\n\t\t\t[ event ] :\n\t\t\tjQuery.makeArray( data, [ event ] );\n\n\t\t// Allow special events to draw outside the lines\n\t\tspecial = jQuery.event.special[ type ] || {};\n\t\tif ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine event propagation path in advance, per W3C events spec (trac-9951)\n\t\t// Bubble up to document, then to window; watch for a global ownerDocument var (trac-9724)\n\t\tif ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {\n\n\t\t\tbubbleType = special.delegateType || type;\n\t\t\tif ( !rfocusMorph.test( bubbleType + type ) ) {\n\t\t\t\tcur = cur.parentNode;\n\t\t\t}\n\t\t\tfor ( ; cur; cur = cur.parentNode ) {\n\t\t\t\teventPath.push( cur );\n\t\t\t\ttmp = cur;\n\t\t\t}\n\n\t\t\t// Only add window if we got to document (e.g., not plain obj or detached DOM)\n\t\t\tif ( tmp === ( elem.ownerDocument || document ) ) {\n\t\t\t\teventPath.push( tmp.defaultView || tmp.parentWindow || window );\n\t\t\t}\n\t\t}\n\n\t\t// Fire handlers on the event path\n\t\ti = 0;\n\t\twhile ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tlastElement = cur;\n\t\t\tevent.type = i > 1 ?\n\t\t\t\tbubbleType :\n\t\t\t\tspecial.bindType || type;\n\n\t\t\t// jQuery handler\n\t\t\thandle = ( dataPriv.get( cur, \"events\" ) || Object.create( null ) )[ event.type ] &&\n\t\t\t\tdataPriv.get( cur, \"handle\" );\n\t\t\tif ( handle ) {\n\t\t\t\thandle.apply( cur, data );\n\t\t\t}\n\n\t\t\t// Native handler\n\t\t\thandle = ontype && cur[ ontype ];\n\t\t\tif ( handle && handle.apply && acceptData( cur ) ) {\n\t\t\t\tevent.result = handle.apply( cur, data );\n\t\t\t\tif ( event.result === false ) {\n\t\t\t\t\tevent.preventDefault();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tevent.type = type;\n\n\t\t// If nobody prevented the default action, do it now\n\t\tif ( !onlyHandlers && !event.isDefaultPrevented() ) {\n\n\t\t\tif ( ( !special._default ||\n\t\t\t\tspecial._default.apply( eventPath.pop(), data ) === false ) &&\n\t\t\t\tacceptData( elem ) ) {\n\n\t\t\t\t// Call a native DOM method on the target with the same name as the event.\n\t\t\t\t// Don't do default actions on window, that's where global variables be (trac-6170)\n\t\t\t\tif ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {\n\n\t\t\t\t\t// Don't re-trigger an onFOO event when we call its FOO() method\n\t\t\t\t\ttmp = elem[ ontype ];\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = null;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prevent re-triggering of the same event, since we already bubbled it above\n\t\t\t\t\tjQuery.event.triggered = type;\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.addEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\telem[ type ]();\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.removeEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\tjQuery.event.triggered = undefined;\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = tmp;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\t// Piggyback on a donor event to simulate a different one\n\t// Used only for `focus(in | out)` events\n\tsimulate: function( type, elem, event ) {\n\t\tvar e = jQuery.extend(\n\t\t\tnew jQuery.Event(),\n\t\t\tevent,\n\t\t\t{\n\t\t\t\ttype: type,\n\t\t\t\tisSimulated: true\n\t\t\t}\n\t\t);\n\n\t\tjQuery.event.trigger( e, null, elem );\n\t}\n\n} );\n\njQuery.fn.extend( {\n\n\ttrigger: function( type, data ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.trigger( type, data, this );\n\t\t} );\n\t},\n\ttriggerHandler: function( type, data ) {\n\t\tvar elem = this[ 0 ];\n\t\tif ( elem ) {\n\t\t\treturn jQuery.event.trigger( type, data, elem, true );\n\t\t}\n\t}\n} );\n\n\nvar\n\trbracket = /\\[\\]$/,\n\trCRLF = /\\r?\\n/g,\n\trsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,\n\trsubmittable = /^(?:input|select|textarea|keygen)/i;\n\nfunction buildParams( prefix, obj, traditional, add ) {\n\tvar name;\n\n\tif ( Array.isArray( obj ) ) {\n\n\t\t// Serialize array item.\n\t\tjQuery.each( obj, function( i, v ) {\n\t\t\tif ( traditional || rbracket.test( prefix ) ) {\n\n\t\t\t\t// Treat each array item as a scalar.\n\t\t\t\tadd( prefix, v );\n\n\t\t\t} else {\n\n\t\t\t\t// Item is non-scalar (array or object), encode its numeric index.\n\t\t\t\tbuildParams(\n\t\t\t\t\tprefix + \"[\" + ( typeof v === \"object\" && v != null ? i : \"\" ) + \"]\",\n\t\t\t\t\tv,\n\t\t\t\t\ttraditional,\n\t\t\t\t\tadd\n\t\t\t\t);\n\t\t\t}\n\t\t} );\n\n\t} else if ( !traditional && toType( obj ) === \"object\" ) {\n\n\t\t// Serialize object item.\n\t\tfor ( name in obj ) {\n\t\t\tbuildParams( prefix + \"[\" + name + \"]\", obj[ name ], traditional, add );\n\t\t}\n\n\t} else {\n\n\t\t// Serialize scalar item.\n\t\tadd( prefix, obj );\n\t}\n}\n\n// Serialize an array of form elements or a set of\n// key/values into a query string\njQuery.param = function( a, traditional ) {\n\tvar prefix,\n\t\ts = [],\n\t\tadd = function( key, valueOrFunction ) {\n\n\t\t\t// If value is a function, invoke it and use its return value\n\t\t\tvar value = isFunction( valueOrFunction ) ?\n\t\t\t\tvalueOrFunction() :\n\t\t\t\tvalueOrFunction;\n\n\t\t\ts[ s.length ] = encodeURIComponent( key ) + \"=\" +\n\t\t\t\tencodeURIComponent( value == null ? \"\" : value );\n\t\t};\n\n\tif ( a == null ) {\n\t\treturn \"\";\n\t}\n\n\t// If an array was passed in, assume that it is an array of form elements.\n\tif ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {\n\n\t\t// Serialize the form elements\n\t\tjQuery.each( a, function() {\n\t\t\tadd( this.name, this.value );\n\t\t} );\n\n\t} else {\n\n\t\t// If traditional, encode the \"old\" way (the way 1.3.2 or older\n\t\t// did it), otherwise encode params recursively.\n\t\tfor ( prefix in a ) {\n\t\t\tbuildParams( prefix, a[ prefix ], traditional, add );\n\t\t}\n\t}\n\n\t// Return the resulting serialization\n\treturn s.join( \"&\" );\n};\n\njQuery.fn.extend( {\n\tserialize: function() {\n\t\treturn jQuery.param( this.serializeArray() );\n\t},\n\tserializeArray: function() {\n\t\treturn this.map( function() {\n\n\t\t\t// Can add propHook for \"elements\" to filter or add form elements\n\t\t\tvar elements = jQuery.prop( this, \"elements\" );\n\t\t\treturn elements ? jQuery.makeArray( elements ) : this;\n\t\t} ).filter( function() {\n\t\t\tvar type = this.type;\n\n\t\t\t// Use .is( \":disabled\" ) so that fieldset[disabled] works\n\t\t\treturn this.name && !jQuery( this ).is( \":disabled\" ) &&\n\t\t\t\trsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&\n\t\t\t\t( this.checked || !rcheckableType.test( type ) );\n\t\t} ).map( function( _i, elem ) {\n\t\t\tvar val = jQuery( this ).val();\n\n\t\t\tif ( val == null ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ( Array.isArray( val ) ) {\n\t\t\t\treturn jQuery.map( val, function( val ) {\n\t\t\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t} ).get();\n\t}\n} );\n\n\nvar\n\tr20 = /%20/g,\n\trhash = /#.*$/,\n\trantiCache = /([?&])_=[^&]*/,\n\trheaders = /^(.*?):[ \\t]*([^\\r\\n]*)$/mg,\n\n\t// trac-7653, trac-8125, trac-8152: local protocol detection\n\trlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,\n\trnoContent = /^(?:GET|HEAD)$/,\n\trprotocol = /^\\/\\//,\n\n\t/* Prefilters\n\t * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)\n\t * 2) These are called:\n\t *    - BEFORE asking for a transport\n\t *    - AFTER param serialization (s.data is a string if s.processData is true)\n\t * 3) key is the dataType\n\t * 4) the catchall symbol \"*\" can be used\n\t * 5) execution will start with transport dataType and THEN continue down to \"*\" if needed\n\t */\n\tprefilters = {},\n\n\t/* Transports bindings\n\t * 1) key is the dataType\n\t * 2) the catchall symbol \"*\" can be used\n\t * 3) selection will start with transport dataType and THEN go to \"*\" if needed\n\t */\n\ttransports = {},\n\n\t// Avoid comment-prolog char sequence (trac-10098); must appease lint and evade compression\n\tallTypes = \"*/\".concat( \"*\" ),\n\n\t// Anchor tag for parsing the document origin\n\toriginAnchor = document.createElement( \"a\" );\n\noriginAnchor.href = location.href;\n\n// Base \"constructor\" for jQuery.ajaxPrefilter and jQuery.ajaxTransport\nfunction addToPrefiltersOrTransports( structure ) {\n\n\t// dataTypeExpression is optional and defaults to \"*\"\n\treturn function( dataTypeExpression, func ) {\n\n\t\tif ( typeof dataTypeExpression !== \"string\" ) {\n\t\t\tfunc = dataTypeExpression;\n\t\t\tdataTypeExpression = \"*\";\n\t\t}\n\n\t\tvar dataType,\n\t\t\ti = 0,\n\t\t\tdataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];\n\n\t\tif ( isFunction( func ) ) {\n\n\t\t\t// For each dataType in the dataTypeExpression\n\t\t\twhile ( ( dataType = dataTypes[ i++ ] ) ) {\n\n\t\t\t\t// Prepend if requested\n\t\t\t\tif ( dataType[ 0 ] === \"+\" ) {\n\t\t\t\t\tdataType = dataType.slice( 1 ) || \"*\";\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );\n\n\t\t\t\t// Otherwise append\n\t\t\t\t} else {\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).push( func );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\n// Base inspection function for prefilters and transports\nfunction inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {\n\n\tvar inspected = {},\n\t\tseekingTransport = ( structure === transports );\n\n\tfunction inspect( dataType ) {\n\t\tvar selected;\n\t\tinspected[ dataType ] = true;\n\t\tjQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {\n\t\t\tvar dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );\n\t\t\tif ( typeof dataTypeOrTransport === \"string\" &&\n\t\t\t\t!seekingTransport && !inspected[ dataTypeOrTransport ] ) {\n\n\t\t\t\toptions.dataTypes.unshift( dataTypeOrTransport );\n\t\t\t\tinspect( dataTypeOrTransport );\n\t\t\t\treturn false;\n\t\t\t} else if ( seekingTransport ) {\n\t\t\t\treturn !( selected = dataTypeOrTransport );\n\t\t\t}\n\t\t} );\n\t\treturn selected;\n\t}\n\n\treturn inspect( options.dataTypes[ 0 ] ) || !inspected[ \"*\" ] && inspect( \"*\" );\n}\n\n// A special extend for ajax options\n// that takes \"flat\" options (not to be deep extended)\n// Fixes trac-9887\nfunction ajaxExtend( target, src ) {\n\tvar key, deep,\n\t\tflatOptions = jQuery.ajaxSettings.flatOptions || {};\n\n\tfor ( key in src ) {\n\t\tif ( src[ key ] !== undefined ) {\n\t\t\t( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];\n\t\t}\n\t}\n\tif ( deep ) {\n\t\tjQuery.extend( true, target, deep );\n\t}\n\n\treturn target;\n}\n\n/* Handles responses to an ajax request:\n * - finds the right dataType (mediates between content-type and expected dataType)\n * - returns the corresponding response\n */\nfunction ajaxHandleResponses( s, jqXHR, responses ) {\n\n\tvar ct, type, finalDataType, firstDataType,\n\t\tcontents = s.contents,\n\t\tdataTypes = s.dataTypes;\n\n\t// Remove auto dataType and get content-type in the process\n\twhile ( dataTypes[ 0 ] === \"*\" ) {\n\t\tdataTypes.shift();\n\t\tif ( ct === undefined ) {\n\t\t\tct = s.mimeType || jqXHR.getResponseHeader( \"Content-Type\" );\n\t\t}\n\t}\n\n\t// Check if we're dealing with a known content-type\n\tif ( ct ) {\n\t\tfor ( type in contents ) {\n\t\t\tif ( contents[ type ] && contents[ type ].test( ct ) ) {\n\t\t\t\tdataTypes.unshift( type );\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Check to see if we have a response for the expected dataType\n\tif ( dataTypes[ 0 ] in responses ) {\n\t\tfinalDataType = dataTypes[ 0 ];\n\t} else {\n\n\t\t// Try convertible dataTypes\n\t\tfor ( type in responses ) {\n\t\t\tif ( !dataTypes[ 0 ] || s.converters[ type + \" \" + dataTypes[ 0 ] ] ) {\n\t\t\t\tfinalDataType = type;\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( !firstDataType ) {\n\t\t\t\tfirstDataType = type;\n\t\t\t}\n\t\t}\n\n\t\t// Or just use first one\n\t\tfinalDataType = finalDataType || firstDataType;\n\t}\n\n\t// If we found a dataType\n\t// We add the dataType to the list if needed\n\t// and return the corresponding response\n\tif ( finalDataType ) {\n\t\tif ( finalDataType !== dataTypes[ 0 ] ) {\n\t\t\tdataTypes.unshift( finalDataType );\n\t\t}\n\t\treturn responses[ finalDataType ];\n\t}\n}\n\n/* Chain conversions given the request and the original response\n * Also sets the responseXXX fields on the jqXHR instance\n */\nfunction ajaxConvert( s, response, jqXHR, isSuccess ) {\n\tvar conv2, current, conv, tmp, prev,\n\t\tconverters = {},\n\n\t\t// Work with a copy of dataTypes in case we need to modify it for conversion\n\t\tdataTypes = s.dataTypes.slice();\n\n\t// Create converters map with lowercased keys\n\tif ( dataTypes[ 1 ] ) {\n\t\tfor ( conv in s.converters ) {\n\t\t\tconverters[ conv.toLowerCase() ] = s.converters[ conv ];\n\t\t}\n\t}\n\n\tcurrent = dataTypes.shift();\n\n\t// Convert to each sequential dataType\n\twhile ( current ) {\n\n\t\tif ( s.responseFields[ current ] ) {\n\t\t\tjqXHR[ s.responseFields[ current ] ] = response;\n\t\t}\n\n\t\t// Apply the dataFilter if provided\n\t\tif ( !prev && isSuccess && s.dataFilter ) {\n\t\t\tresponse = s.dataFilter( response, s.dataType );\n\t\t}\n\n\t\tprev = current;\n\t\tcurrent = dataTypes.shift();\n\n\t\tif ( current ) {\n\n\t\t\t// There's only work to do if current dataType is non-auto\n\t\t\tif ( current === \"*\" ) {\n\n\t\t\t\tcurrent = prev;\n\n\t\t\t// Convert response if prev dataType is non-auto and differs from current\n\t\t\t} else if ( prev !== \"*\" && prev !== current ) {\n\n\t\t\t\t// Seek a direct converter\n\t\t\t\tconv = converters[ prev + \" \" + current ] || converters[ \"* \" + current ];\n\n\t\t\t\t// If none found, seek a pair\n\t\t\t\tif ( !conv ) {\n\t\t\t\t\tfor ( conv2 in converters ) {\n\n\t\t\t\t\t\t// If conv2 outputs current\n\t\t\t\t\t\ttmp = conv2.split( \" \" );\n\t\t\t\t\t\tif ( tmp[ 1 ] === current ) {\n\n\t\t\t\t\t\t\t// If prev can be converted to accepted input\n\t\t\t\t\t\t\tconv = converters[ prev + \" \" + tmp[ 0 ] ] ||\n\t\t\t\t\t\t\t\tconverters[ \"* \" + tmp[ 0 ] ];\n\t\t\t\t\t\t\tif ( conv ) {\n\n\t\t\t\t\t\t\t\t// Condense equivalence converters\n\t\t\t\t\t\t\t\tif ( conv === true ) {\n\t\t\t\t\t\t\t\t\tconv = converters[ conv2 ];\n\n\t\t\t\t\t\t\t\t// Otherwise, insert the intermediate dataType\n\t\t\t\t\t\t\t\t} else if ( converters[ conv2 ] !== true ) {\n\t\t\t\t\t\t\t\t\tcurrent = tmp[ 0 ];\n\t\t\t\t\t\t\t\t\tdataTypes.unshift( tmp[ 1 ] );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Apply converter (if not an equivalence)\n\t\t\t\tif ( conv !== true ) {\n\n\t\t\t\t\t// Unless errors are allowed to bubble, catch and return them\n\t\t\t\t\tif ( conv && s.throws ) {\n\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t\t} catch ( e ) {\n\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\tstate: \"parsererror\",\n\t\t\t\t\t\t\t\terror: conv ? e : \"No conversion from \" + prev + \" to \" + current\n\t\t\t\t\t\t\t};\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn { state: \"success\", data: response };\n}\n\njQuery.extend( {\n\n\t// Counter for holding the number of active queries\n\tactive: 0,\n\n\t// Last-Modified header cache for next request\n\tlastModified: {},\n\tetag: {},\n\n\tajaxSettings: {\n\t\turl: location.href,\n\t\ttype: \"GET\",\n\t\tisLocal: rlocalProtocol.test( location.protocol ),\n\t\tglobal: true,\n\t\tprocessData: true,\n\t\tasync: true,\n\t\tcontentType: \"application/x-www-form-urlencoded; charset=UTF-8\",\n\n\t\t/*\n\t\ttimeout: 0,\n\t\tdata: null,\n\t\tdataType: null,\n\t\tusername: null,\n\t\tpassword: null,\n\t\tcache: null,\n\t\tthrows: false,\n\t\ttraditional: false,\n\t\theaders: {},\n\t\t*/\n\n\t\taccepts: {\n\t\t\t\"*\": allTypes,\n\t\t\ttext: \"text/plain\",\n\t\t\thtml: \"text/html\",\n\t\t\txml: \"application/xml, text/xml\",\n\t\t\tjson: \"application/json, text/javascript\"\n\t\t},\n\n\t\tcontents: {\n\t\t\txml: /\\bxml\\b/,\n\t\t\thtml: /\\bhtml/,\n\t\t\tjson: /\\bjson\\b/\n\t\t},\n\n\t\tresponseFields: {\n\t\t\txml: \"responseXML\",\n\t\t\ttext: \"responseText\",\n\t\t\tjson: \"responseJSON\"\n\t\t},\n\n\t\t// Data converters\n\t\t// Keys separate source (or catchall \"*\") and destination types with a single space\n\t\tconverters: {\n\n\t\t\t// Convert anything to text\n\t\t\t\"* text\": String,\n\n\t\t\t// Text to html (true = no transformation)\n\t\t\t\"text html\": true,\n\n\t\t\t// Evaluate text as a json expression\n\t\t\t\"text json\": JSON.parse,\n\n\t\t\t// Parse text as xml\n\t\t\t\"text xml\": jQuery.parseXML\n\t\t},\n\n\t\t// For options that shouldn't be deep extended:\n\t\t// you can add your own custom options here if\n\t\t// and when you create one that shouldn't be\n\t\t// deep extended (see ajaxExtend)\n\t\tflatOptions: {\n\t\t\turl: true,\n\t\t\tcontext: true\n\t\t}\n\t},\n\n\t// Creates a full fledged settings object into target\n\t// with both ajaxSettings and settings fields.\n\t// If target is omitted, writes into ajaxSettings.\n\tajaxSetup: function( target, settings ) {\n\t\treturn settings ?\n\n\t\t\t// Building a settings object\n\t\t\tajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :\n\n\t\t\t// Extending ajaxSettings\n\t\t\tajaxExtend( jQuery.ajaxSettings, target );\n\t},\n\n\tajaxPrefilter: addToPrefiltersOrTransports( prefilters ),\n\tajaxTransport: addToPrefiltersOrTransports( transports ),\n\n\t// Main method\n\tajax: function( url, options ) {\n\n\t\t// If url is an object, simulate pre-1.5 signature\n\t\tif ( typeof url === \"object\" ) {\n\t\t\toptions = url;\n\t\t\turl = undefined;\n\t\t}\n\n\t\t// Force options to be an object\n\t\toptions = options || {};\n\n\t\tvar transport,\n\n\t\t\t// URL without anti-cache param\n\t\t\tcacheURL,\n\n\t\t\t// Response headers\n\t\t\tresponseHeadersString,\n\t\t\tresponseHeaders,\n\n\t\t\t// timeout handle\n\t\t\ttimeoutTimer,\n\n\t\t\t// Url cleanup var\n\t\t\turlAnchor,\n\n\t\t\t// Request state (becomes false upon send and true upon completion)\n\t\t\tcompleted,\n\n\t\t\t// To know if global events are to be dispatched\n\t\t\tfireGlobals,\n\n\t\t\t// Loop variable\n\t\t\ti,\n\n\t\t\t// uncached part of the url\n\t\t\tuncached,\n\n\t\t\t// Create the final options object\n\t\t\ts = jQuery.ajaxSetup( {}, options ),\n\n\t\t\t// Callbacks context\n\t\t\tcallbackContext = s.context || s,\n\n\t\t\t// Context for global events is callbackContext if it is a DOM node or jQuery collection\n\t\t\tglobalEventContext = s.context &&\n\t\t\t\t( callbackContext.nodeType || callbackContext.jquery ) ?\n\t\t\t\tjQuery( callbackContext ) :\n\t\t\t\tjQuery.event,\n\n\t\t\t// Deferreds\n\t\t\tdeferred = jQuery.Deferred(),\n\t\t\tcompleteDeferred = jQuery.Callbacks( \"once memory\" ),\n\n\t\t\t// Status-dependent callbacks\n\t\t\tstatusCode = s.statusCode || {},\n\n\t\t\t// Headers (they are sent all at once)\n\t\t\trequestHeaders = {},\n\t\t\trequestHeadersNames = {},\n\n\t\t\t// Default abort message\n\t\t\tstrAbort = \"canceled\",\n\n\t\t\t// Fake xhr\n\t\t\tjqXHR = {\n\t\t\t\treadyState: 0,\n\n\t\t\t\t// Builds headers hashtable if needed\n\t\t\t\tgetResponseHeader: function( key ) {\n\t\t\t\t\tvar match;\n\t\t\t\t\tif ( completed ) {\n\t\t\t\t\t\tif ( !responseHeaders ) {\n\t\t\t\t\t\t\tresponseHeaders = {};\n\t\t\t\t\t\t\twhile ( ( match = rheaders.exec( responseHeadersString ) ) ) {\n\t\t\t\t\t\t\t\tresponseHeaders[ match[ 1 ].toLowerCase() + \" \" ] =\n\t\t\t\t\t\t\t\t\t( responseHeaders[ match[ 1 ].toLowerCase() + \" \" ] || [] )\n\t\t\t\t\t\t\t\t\t\t.concat( match[ 2 ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tmatch = responseHeaders[ key.toLowerCase() + \" \" ];\n\t\t\t\t\t}\n\t\t\t\t\treturn match == null ? null : match.join( \", \" );\n\t\t\t\t},\n\n\t\t\t\t// Raw string\n\t\t\t\tgetAllResponseHeaders: function() {\n\t\t\t\t\treturn completed ? responseHeadersString : null;\n\t\t\t\t},\n\n\t\t\t\t// Caches the header\n\t\t\t\tsetRequestHeader: function( name, value ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\tname = requestHeadersNames[ name.toLowerCase() ] =\n\t\t\t\t\t\t\trequestHeadersNames[ name.toLowerCase() ] || name;\n\t\t\t\t\t\trequestHeaders[ name ] = value;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Overrides response content-type header\n\t\t\t\toverrideMimeType: function( type ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\ts.mimeType = type;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Status-dependent callbacks\n\t\t\t\tstatusCode: function( map ) {\n\t\t\t\t\tvar code;\n\t\t\t\t\tif ( map ) {\n\t\t\t\t\t\tif ( completed ) {\n\n\t\t\t\t\t\t\t// Execute the appropriate callbacks\n\t\t\t\t\t\t\tjqXHR.always( map[ jqXHR.status ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Lazy-add the new callbacks in a way that preserves old ones\n\t\t\t\t\t\t\tfor ( code in map ) {\n\t\t\t\t\t\t\t\tstatusCode[ code ] = [ statusCode[ code ], map[ code ] ];\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Cancel the request\n\t\t\t\tabort: function( statusText ) {\n\t\t\t\t\tvar finalText = statusText || strAbort;\n\t\t\t\t\tif ( transport ) {\n\t\t\t\t\t\ttransport.abort( finalText );\n\t\t\t\t\t}\n\t\t\t\t\tdone( 0, finalText );\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t};\n\n\t\t// Attach deferreds\n\t\tdeferred.promise( jqXHR );\n\n\t\t// Add protocol if not provided (prefilters might expect it)\n\t\t// Handle falsy url in the settings object (trac-10093: consistency with old signature)\n\t\t// We also use the url parameter if available\n\t\ts.url = ( ( url || s.url || location.href ) + \"\" )\n\t\t\t.replace( rprotocol, location.protocol + \"//\" );\n\n\t\t// Alias method option to type as per ticket trac-12004\n\t\ts.type = options.method || options.type || s.method || s.type;\n\n\t\t// Extract dataTypes list\n\t\ts.dataTypes = ( s.dataType || \"*\" ).toLowerCase().match( rnothtmlwhite ) || [ \"\" ];\n\n\t\t// A cross-domain request is in order when the origin doesn't match the current origin.\n\t\tif ( s.crossDomain == null ) {\n\t\t\turlAnchor = document.createElement( \"a\" );\n\n\t\t\t// Support: IE <=8 - 11, Edge 12 - 15\n\t\t\t// IE throws exception on accessing the href property if url is malformed,\n\t\t\t// e.g. http://example.com:80x/\n\t\t\ttry {\n\t\t\t\turlAnchor.href = s.url;\n\n\t\t\t\t// Support: IE <=8 - 11 only\n\t\t\t\t// Anchor's host property isn't correctly set when s.url is relative\n\t\t\t\turlAnchor.href = urlAnchor.href;\n\t\t\t\ts.crossDomain = originAnchor.protocol + \"//\" + originAnchor.host !==\n\t\t\t\t\turlAnchor.protocol + \"//\" + urlAnchor.host;\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// If there is an error parsing the URL, assume it is crossDomain,\n\t\t\t\t// it can be rejected by the transport if it is invalid\n\t\t\t\ts.crossDomain = true;\n\t\t\t}\n\t\t}\n\n\t\t// Convert data if not already a string\n\t\tif ( s.data && s.processData && typeof s.data !== \"string\" ) {\n\t\t\ts.data = jQuery.param( s.data, s.traditional );\n\t\t}\n\n\t\t// Apply prefilters\n\t\tinspectPrefiltersOrTransports( prefilters, s, options, jqXHR );\n\n\t\t// If request was aborted inside a prefilter, stop there\n\t\tif ( completed ) {\n\t\t\treturn jqXHR;\n\t\t}\n\n\t\t// We can fire global events as of now if asked to\n\t\t// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (trac-15118)\n\t\tfireGlobals = jQuery.event && s.global;\n\n\t\t// Watch for a new set of requests\n\t\tif ( fireGlobals && jQuery.active++ === 0 ) {\n\t\t\tjQuery.event.trigger( \"ajaxStart\" );\n\t\t}\n\n\t\t// Uppercase the type\n\t\ts.type = s.type.toUpperCase();\n\n\t\t// Determine if request has content\n\t\ts.hasContent = !rnoContent.test( s.type );\n\n\t\t// Save the URL in case we're toying with the If-Modified-Since\n\t\t// and/or If-None-Match header later on\n\t\t// Remove hash to simplify url manipulation\n\t\tcacheURL = s.url.replace( rhash, \"\" );\n\n\t\t// More options handling for requests with no content\n\t\tif ( !s.hasContent ) {\n\n\t\t\t// Remember the hash so we can put it back\n\t\t\tuncached = s.url.slice( cacheURL.length );\n\n\t\t\t// If data is available and should be processed, append data to url\n\t\t\tif ( s.data && ( s.processData || typeof s.data === \"string\" ) ) {\n\t\t\t\tcacheURL += ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + s.data;\n\n\t\t\t\t// trac-9682: remove data so that it's not used in an eventual retry\n\t\t\t\tdelete s.data;\n\t\t\t}\n\n\t\t\t// Add or update anti-cache param if needed\n\t\t\tif ( s.cache === false ) {\n\t\t\t\tcacheURL = cacheURL.replace( rantiCache, \"$1\" );\n\t\t\t\tuncached = ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + \"_=\" + ( nonce.guid++ ) +\n\t\t\t\t\tuncached;\n\t\t\t}\n\n\t\t\t// Put hash and anti-cache on the URL that will be requested (gh-1732)\n\t\t\ts.url = cacheURL + uncached;\n\n\t\t// Change '%20' to '+' if this is encoded form body content (gh-2658)\n\t\t} else if ( s.data && s.processData &&\n\t\t\t( s.contentType || \"\" ).indexOf( \"application/x-www-form-urlencoded\" ) === 0 ) {\n\t\t\ts.data = s.data.replace( r20, \"+\" );\n\t\t}\n\n\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\tif ( s.ifModified ) {\n\t\t\tif ( jQuery.lastModified[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-Modified-Since\", jQuery.lastModified[ cacheURL ] );\n\t\t\t}\n\t\t\tif ( jQuery.etag[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-None-Match\", jQuery.etag[ cacheURL ] );\n\t\t\t}\n\t\t}\n\n\t\t// Set the correct header, if data is being sent\n\t\tif ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {\n\t\t\tjqXHR.setRequestHeader( \"Content-Type\", s.contentType );\n\t\t}\n\n\t\t// Set the Accepts header for the server, depending on the dataType\n\t\tjqXHR.setRequestHeader(\n\t\t\t\"Accept\",\n\t\t\ts.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?\n\t\t\t\ts.accepts[ s.dataTypes[ 0 ] ] +\n\t\t\t\t\t( s.dataTypes[ 0 ] !== \"*\" ? \", \" + allTypes + \"; q=0.01\" : \"\" ) :\n\t\t\t\ts.accepts[ \"*\" ]\n\t\t);\n\n\t\t// Check for headers option\n\t\tfor ( i in s.headers ) {\n\t\t\tjqXHR.setRequestHeader( i, s.headers[ i ] );\n\t\t}\n\n\t\t// Allow custom headers/mimetypes and early abort\n\t\tif ( s.beforeSend &&\n\t\t\t( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {\n\n\t\t\t// Abort if not done already and return\n\t\t\treturn jqXHR.abort();\n\t\t}\n\n\t\t// Aborting is no longer a cancellation\n\t\tstrAbort = \"abort\";\n\n\t\t// Install callbacks on deferreds\n\t\tcompleteDeferred.add( s.complete );\n\t\tjqXHR.done( s.success );\n\t\tjqXHR.fail( s.error );\n\n\t\t// Get transport\n\t\ttransport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );\n\n\t\t// If no transport, we auto-abort\n\t\tif ( !transport ) {\n\t\t\tdone( -1, \"No Transport\" );\n\t\t} else {\n\t\t\tjqXHR.readyState = 1;\n\n\t\t\t// Send global event\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxSend\", [ jqXHR, s ] );\n\t\t\t}\n\n\t\t\t// If request was aborted inside ajaxSend, stop there\n\t\t\tif ( completed ) {\n\t\t\t\treturn jqXHR;\n\t\t\t}\n\n\t\t\t// Timeout\n\t\t\tif ( s.async && s.timeout > 0 ) {\n\t\t\t\ttimeoutTimer = window.setTimeout( function() {\n\t\t\t\t\tjqXHR.abort( \"timeout\" );\n\t\t\t\t}, s.timeout );\n\t\t\t}\n\n\t\t\ttry {\n\t\t\t\tcompleted = false;\n\t\t\t\ttransport.send( requestHeaders, done );\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// Rethrow post-completion exceptions\n\t\t\t\tif ( completed ) {\n\t\t\t\t\tthrow e;\n\t\t\t\t}\n\n\t\t\t\t// Propagate others as results\n\t\t\t\tdone( -1, e );\n\t\t\t}\n\t\t}\n\n\t\t// Callback for when everything is done\n\t\tfunction done( status, nativeStatusText, responses, headers ) {\n\t\t\tvar isSuccess, success, error, response, modified,\n\t\t\t\tstatusText = nativeStatusText;\n\n\t\t\t// Ignore repeat invocations\n\t\t\tif ( completed ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tcompleted = true;\n\n\t\t\t// Clear timeout if it exists\n\t\t\tif ( timeoutTimer ) {\n\t\t\t\twindow.clearTimeout( timeoutTimer );\n\t\t\t}\n\n\t\t\t// Dereference transport for early garbage collection\n\t\t\t// (no matter how long the jqXHR object will be used)\n\t\t\ttransport = undefined;\n\n\t\t\t// Cache response headers\n\t\t\tresponseHeadersString = headers || \"\";\n\n\t\t\t// Set readyState\n\t\t\tjqXHR.readyState = status > 0 ? 4 : 0;\n\n\t\t\t// Determine if successful\n\t\t\tisSuccess = status >= 200 && status < 300 || status === 304;\n\n\t\t\t// Get response data\n\t\t\tif ( responses ) {\n\t\t\t\tresponse = ajaxHandleResponses( s, jqXHR, responses );\n\t\t\t}\n\n\t\t\t// Use a noop converter for missing script but not if jsonp\n\t\t\tif ( !isSuccess &&\n\t\t\t\tjQuery.inArray( \"script\", s.dataTypes ) > -1 &&\n\t\t\t\tjQuery.inArray( \"json\", s.dataTypes ) < 0 ) {\n\t\t\t\ts.converters[ \"text script\" ] = function() {};\n\t\t\t}\n\n\t\t\t// Convert no matter what (that way responseXXX fields are always set)\n\t\t\tresponse = ajaxConvert( s, response, jqXHR, isSuccess );\n\n\t\t\t// If successful, handle type chaining\n\t\t\tif ( isSuccess ) {\n\n\t\t\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\t\t\tif ( s.ifModified ) {\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"Last-Modified\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.lastModified[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"etag\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.etag[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// if no content\n\t\t\t\tif ( status === 204 || s.type === \"HEAD\" ) {\n\t\t\t\t\tstatusText = \"nocontent\";\n\n\t\t\t\t// if not modified\n\t\t\t\t} else if ( status === 304 ) {\n\t\t\t\t\tstatusText = \"notmodified\";\n\n\t\t\t\t// If we have data, let's convert it\n\t\t\t\t} else {\n\t\t\t\t\tstatusText = response.state;\n\t\t\t\t\tsuccess = response.data;\n\t\t\t\t\terror = response.error;\n\t\t\t\t\tisSuccess = !error;\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Extract error from statusText and normalize for non-aborts\n\t\t\t\terror = statusText;\n\t\t\t\tif ( status || !statusText ) {\n\t\t\t\t\tstatusText = \"error\";\n\t\t\t\t\tif ( status < 0 ) {\n\t\t\t\t\t\tstatus = 0;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Set data for the fake xhr object\n\t\t\tjqXHR.status = status;\n\t\t\tjqXHR.statusText = ( nativeStatusText || statusText ) + \"\";\n\n\t\t\t// Success/Error\n\t\t\tif ( isSuccess ) {\n\t\t\t\tdeferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );\n\t\t\t} else {\n\t\t\t\tdeferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );\n\t\t\t}\n\n\t\t\t// Status-dependent callbacks\n\t\t\tjqXHR.statusCode( statusCode );\n\t\t\tstatusCode = undefined;\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( isSuccess ? \"ajaxSuccess\" : \"ajaxError\",\n\t\t\t\t\t[ jqXHR, s, isSuccess ? success : error ] );\n\t\t\t}\n\n\t\t\t// Complete\n\t\t\tcompleteDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxComplete\", [ jqXHR, s ] );\n\n\t\t\t\t// Handle the global AJAX counter\n\t\t\t\tif ( !( --jQuery.active ) ) {\n\t\t\t\t\tjQuery.event.trigger( \"ajaxStop\" );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn jqXHR;\n\t},\n\n\tgetJSON: function( url, data, callback ) {\n\t\treturn jQuery.get( url, data, callback, \"json\" );\n\t},\n\n\tgetScript: function( url, callback ) {\n\t\treturn jQuery.get( url, undefined, callback, \"script\" );\n\t}\n} );\n\njQuery.each( [ \"get\", \"post\" ], function( _i, method ) {\n\tjQuery[ method ] = function( url, data, callback, type ) {\n\n\t\t// Shift arguments if data argument was omitted\n\t\tif ( isFunction( data ) ) {\n\t\t\ttype = type || callback;\n\t\t\tcallback = data;\n\t\t\tdata = undefined;\n\t\t}\n\n\t\t// The url can be an options object (which then must have .url)\n\t\treturn jQuery.ajax( jQuery.extend( {\n\t\t\turl: url,\n\t\t\ttype: method,\n\t\t\tdataType: type,\n\t\t\tdata: data,\n\t\t\tsuccess: callback\n\t\t}, jQuery.isPlainObject( url ) && url ) );\n\t};\n} );\n\njQuery.ajaxPrefilter( function( s ) {\n\tvar i;\n\tfor ( i in s.headers ) {\n\t\tif ( i.toLowerCase() === \"content-type\" ) {\n\t\t\ts.contentType = s.headers[ i ] || \"\";\n\t\t}\n\t}\n} );\n\n\njQuery._evalUrl = function( url, options, doc ) {\n\treturn jQuery.ajax( {\n\t\turl: url,\n\n\t\t// Make this explicit, since user can override this through ajaxSetup (trac-11264)\n\t\ttype: \"GET\",\n\t\tdataType: \"script\",\n\t\tcache: true,\n\t\tasync: false,\n\t\tglobal: false,\n\n\t\t// Only evaluate the response if it is successful (gh-4126)\n\t\t// dataFilter is not invoked for failure responses, so using it instead\n\t\t// of the default converter is kludgy but it works.\n\t\tconverters: {\n\t\t\t\"text script\": function() {}\n\t\t},\n\t\tdataFilter: function( response ) {\n\t\t\tjQuery.globalEval( response, options, doc );\n\t\t}\n\t} );\n};\n\n\njQuery.fn.extend( {\n\twrapAll: function( html ) {\n\t\tvar wrap;\n\n\t\tif ( this[ 0 ] ) {\n\t\t\tif ( isFunction( html ) ) {\n\t\t\t\thtml = html.call( this[ 0 ] );\n\t\t\t}\n\n\t\t\t// The elements to wrap the target around\n\t\t\twrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );\n\n\t\t\tif ( this[ 0 ].parentNode ) {\n\t\t\t\twrap.insertBefore( this[ 0 ] );\n\t\t\t}\n\n\t\t\twrap.map( function() {\n\t\t\t\tvar elem = this;\n\n\t\t\t\twhile ( elem.firstElementChild ) {\n\t\t\t\t\telem = elem.firstElementChild;\n\t\t\t\t}\n\n\t\t\t\treturn elem;\n\t\t\t} ).append( this );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\twrapInner: function( html ) {\n\t\tif ( isFunction( html ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).wrapInner( html.call( this, i ) );\n\t\t\t} );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar self = jQuery( this ),\n\t\t\t\tcontents = self.contents();\n\n\t\t\tif ( contents.length ) {\n\t\t\t\tcontents.wrapAll( html );\n\n\t\t\t} else {\n\t\t\t\tself.append( html );\n\t\t\t}\n\t\t} );\n\t},\n\n\twrap: function( html ) {\n\t\tvar htmlIsFunction = isFunction( html );\n\n\t\treturn this.each( function( i ) {\n\t\t\tjQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );\n\t\t} );\n\t},\n\n\tunwrap: function( selector ) {\n\t\tthis.parent( selector ).not( \"body\" ).each( function() {\n\t\t\tjQuery( this ).replaceWith( this.childNodes );\n\t\t} );\n\t\treturn this;\n\t}\n} );\n\n\njQuery.expr.pseudos.hidden = function( elem ) {\n\treturn !jQuery.expr.pseudos.visible( elem );\n};\njQuery.expr.pseudos.visible = function( elem ) {\n\treturn !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );\n};\n\n\n\n\njQuery.ajaxSettings.xhr = function() {\n\ttry {\n\t\treturn new window.XMLHttpRequest();\n\t} catch ( e ) {}\n};\n\nvar xhrSuccessStatus = {\n\n\t\t// File protocol always yields status code 0, assume 200\n\t\t0: 200,\n\n\t\t// Support: IE <=9 only\n\t\t// trac-1450: sometimes IE returns 1223 when it should be 204\n\t\t1223: 204\n\t},\n\txhrSupported = jQuery.ajaxSettings.xhr();\n\nsupport.cors = !!xhrSupported && ( \"withCredentials\" in xhrSupported );\nsupport.ajax = xhrSupported = !!xhrSupported;\n\njQuery.ajaxTransport( function( options ) {\n\tvar callback, errorCallback;\n\n\t// Cross domain only allowed if supported through XMLHttpRequest\n\tif ( support.cors || xhrSupported && !options.crossDomain ) {\n\t\treturn {\n\t\t\tsend: function( headers, complete ) {\n\t\t\t\tvar i,\n\t\t\t\t\txhr = options.xhr();\n\n\t\t\t\txhr.open(\n\t\t\t\t\toptions.type,\n\t\t\t\t\toptions.url,\n\t\t\t\t\toptions.async,\n\t\t\t\t\toptions.username,\n\t\t\t\t\toptions.password\n\t\t\t\t);\n\n\t\t\t\t// Apply custom fields if provided\n\t\t\t\tif ( options.xhrFields ) {\n\t\t\t\t\tfor ( i in options.xhrFields ) {\n\t\t\t\t\t\txhr[ i ] = options.xhrFields[ i ];\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Override mime type if needed\n\t\t\t\tif ( options.mimeType && xhr.overrideMimeType ) {\n\t\t\t\t\txhr.overrideMimeType( options.mimeType );\n\t\t\t\t}\n\n\t\t\t\t// X-Requested-With header\n\t\t\t\t// For cross-domain requests, seeing as conditions for a preflight are\n\t\t\t\t// akin to a jigsaw puzzle, we simply never set it to be sure.\n\t\t\t\t// (it can always be set on a per-request basis or even using ajaxSetup)\n\t\t\t\t// For same-domain requests, won't change header if already provided.\n\t\t\t\tif ( !options.crossDomain && !headers[ \"X-Requested-With\" ] ) {\n\t\t\t\t\theaders[ \"X-Requested-With\" ] = \"XMLHttpRequest\";\n\t\t\t\t}\n\n\t\t\t\t// Set headers\n\t\t\t\tfor ( i in headers ) {\n\t\t\t\t\txhr.setRequestHeader( i, headers[ i ] );\n\t\t\t\t}\n\n\t\t\t\t// Callback\n\t\t\t\tcallback = function( type ) {\n\t\t\t\t\treturn function() {\n\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\tcallback = errorCallback = xhr.onload =\n\t\t\t\t\t\t\t\txhr.onerror = xhr.onabort = xhr.ontimeout =\n\t\t\t\t\t\t\t\t\txhr.onreadystatechange = null;\n\n\t\t\t\t\t\t\tif ( type === \"abort\" ) {\n\t\t\t\t\t\t\t\txhr.abort();\n\t\t\t\t\t\t\t} else if ( type === \"error\" ) {\n\n\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t// On a manual native abort, IE9 throws\n\t\t\t\t\t\t\t\t// errors on any property access that is not readyState\n\t\t\t\t\t\t\t\tif ( typeof xhr.status !== \"number\" ) {\n\t\t\t\t\t\t\t\t\tcomplete( 0, \"error\" );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tcomplete(\n\n\t\t\t\t\t\t\t\t\t\t// File: protocol always yields status 0; see trac-8605, trac-14207\n\t\t\t\t\t\t\t\t\t\txhr.status,\n\t\t\t\t\t\t\t\t\t\txhr.statusText\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tcomplete(\n\t\t\t\t\t\t\t\t\txhrSuccessStatus[ xhr.status ] || xhr.status,\n\t\t\t\t\t\t\t\t\txhr.statusText,\n\n\t\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t\t// IE9 has no XHR2 but throws on binary (trac-11426)\n\t\t\t\t\t\t\t\t\t// For XHR2 non-text, let the caller handle it (gh-2498)\n\t\t\t\t\t\t\t\t\t( xhr.responseType || \"text\" ) !== \"text\"  ||\n\t\t\t\t\t\t\t\t\ttypeof xhr.responseText !== \"string\" ?\n\t\t\t\t\t\t\t\t\t\t{ binary: xhr.response } :\n\t\t\t\t\t\t\t\t\t\t{ text: xhr.responseText },\n\t\t\t\t\t\t\t\t\txhr.getAllResponseHeaders()\n\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t};\n\n\t\t\t\t// Listen to events\n\t\t\t\txhr.onload = callback();\n\t\t\t\terrorCallback = xhr.onerror = xhr.ontimeout = callback( \"error\" );\n\n\t\t\t\t// Support: IE 9 only\n\t\t\t\t// Use onreadystatechange to replace onabort\n\t\t\t\t// to handle uncaught aborts\n\t\t\t\tif ( xhr.onabort !== undefined ) {\n\t\t\t\t\txhr.onabort = errorCallback;\n\t\t\t\t} else {\n\t\t\t\t\txhr.onreadystatechange = function() {\n\n\t\t\t\t\t\t// Check readyState before timeout as it changes\n\t\t\t\t\t\tif ( xhr.readyState === 4 ) {\n\n\t\t\t\t\t\t\t// Allow onerror to be called first,\n\t\t\t\t\t\t\t// but that will not handle a native abort\n\t\t\t\t\t\t\t// Also, save errorCallback to a variable\n\t\t\t\t\t\t\t// as xhr.onerror cannot be accessed\n\t\t\t\t\t\t\twindow.setTimeout( function() {\n\t\t\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\t\t\terrorCallback();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t}\n\n\t\t\t\t// Create the abort callback\n\t\t\t\tcallback = callback( \"abort\" );\n\n\t\t\t\ttry {\n\n\t\t\t\t\t// Do send the request (this may raise an exception)\n\t\t\t\t\txhr.send( options.hasContent && options.data || null );\n\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t// trac-14683: Only rethrow if this hasn't been notified as an error yet\n\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\tthrow e;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t},\n\n\t\t\tabort: function() {\n\t\t\t\tif ( callback ) {\n\t\t\t\t\tcallback();\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n} );\n\n\n\n\n// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)\njQuery.ajaxPrefilter( function( s ) {\n\tif ( s.crossDomain ) {\n\t\ts.contents.script = false;\n\t}\n} );\n\n// Install script dataType\njQuery.ajaxSetup( {\n\taccepts: {\n\t\tscript: \"text/javascript, application/javascript, \" +\n\t\t\t\"application/ecmascript, application/x-ecmascript\"\n\t},\n\tcontents: {\n\t\tscript: /\\b(?:java|ecma)script\\b/\n\t},\n\tconverters: {\n\t\t\"text script\": function( text ) {\n\t\t\tjQuery.globalEval( text );\n\t\t\treturn text;\n\t\t}\n\t}\n} );\n\n// Handle cache's special case and crossDomain\njQuery.ajaxPrefilter( \"script\", function( s ) {\n\tif ( s.cache === undefined ) {\n\t\ts.cache = false;\n\t}\n\tif ( s.crossDomain ) {\n\t\ts.type = \"GET\";\n\t}\n} );\n\n// Bind script tag hack transport\njQuery.ajaxTransport( \"script\", function( s ) {\n\n\t// This transport only deals with cross domain or forced-by-attrs requests\n\tif ( s.crossDomain || s.scriptAttrs ) {\n\t\tvar script, callback;\n\t\treturn {\n\t\t\tsend: function( _, complete ) {\n\t\t\t\tscript = jQuery( \"<script>\" )\n\t\t\t\t\t.attr( s.scriptAttrs || {} )\n\t\t\t\t\t.prop( { charset: s.scriptCharset, src: s.url } )\n\t\t\t\t\t.on( \"load error\", callback = function( evt ) {\n\t\t\t\t\t\tscript.remove();\n\t\t\t\t\t\tcallback = null;\n\t\t\t\t\t\tif ( evt ) {\n\t\t\t\t\t\t\tcomplete( evt.type === \"error\" ? 404 : 200, evt.type );\n\t\t\t\t\t\t}\n\t\t\t\t\t} );\n\n\t\t\t\t// Use native DOM manipulation to avoid our domManip AJAX trickery\n\t\t\t\tdocument.head.appendChild( script[ 0 ] );\n\t\t\t},\n\t\t\tabort: function() {\n\t\t\t\tif ( callback ) {\n\t\t\t\t\tcallback();\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n} );\n\n\n\n\nvar oldCallbacks = [],\n\trjsonp = /(=)\\?(?=&|$)|\\?\\?/;\n\n// Default jsonp settings\njQuery.ajaxSetup( {\n\tjsonp: \"callback\",\n\tjsonpCallback: function() {\n\t\tvar callback = oldCallbacks.pop() || ( jQuery.expando + \"_\" + ( nonce.guid++ ) );\n\t\tthis[ callback ] = true;\n\t\treturn callback;\n\t}\n} );\n\n// Detect, normalize options and install callbacks for jsonp requests\njQuery.ajaxPrefilter( \"json jsonp\", function( s, originalSettings, jqXHR ) {\n\n\tvar callbackName, overwritten, responseContainer,\n\t\tjsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?\n\t\t\t\"url\" :\n\t\t\ttypeof s.data === \"string\" &&\n\t\t\t\t( s.contentType || \"\" )\n\t\t\t\t\t.indexOf( \"application/x-www-form-urlencoded\" ) === 0 &&\n\t\t\t\trjsonp.test( s.data ) && \"data\"\n\t\t);\n\n\t// Handle iff the expected data type is \"jsonp\" or we have a parameter to set\n\tif ( jsonProp || s.dataTypes[ 0 ] === \"jsonp\" ) {\n\n\t\t// Get callback name, remembering preexisting value associated with it\n\t\tcallbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ?\n\t\t\ts.jsonpCallback() :\n\t\t\ts.jsonpCallback;\n\n\t\t// Insert callback into url or form data\n\t\tif ( jsonProp ) {\n\t\t\ts[ jsonProp ] = s[ jsonProp ].replace( rjsonp, \"$1\" + callbackName );\n\t\t} else if ( s.jsonp !== false ) {\n\t\t\ts.url += ( rquery.test( s.url ) ? \"&\" : \"?\" ) + s.jsonp + \"=\" + callbackName;\n\t\t}\n\n\t\t// Use data converter to retrieve json after script execution\n\t\ts.converters[ \"script json\" ] = function() {\n\t\t\tif ( !responseContainer ) {\n\t\t\t\tjQuery.error( callbackName + \" was not called\" );\n\t\t\t}\n\t\t\treturn responseContainer[ 0 ];\n\t\t};\n\n\t\t// Force json dataType\n\t\ts.dataTypes[ 0 ] = \"json\";\n\n\t\t// Install callback\n\t\toverwritten = window[ callbackName ];\n\t\twindow[ callbackName ] = function() {\n\t\t\tresponseContainer = arguments;\n\t\t};\n\n\t\t// Clean-up function (fires after converters)\n\t\tjqXHR.always( function() {\n\n\t\t\t// If previous value didn't exist - remove it\n\t\t\tif ( overwritten === undefined ) {\n\t\t\t\tjQuery( window ).removeProp( callbackName );\n\n\t\t\t// Otherwise restore preexisting value\n\t\t\t} else {\n\t\t\t\twindow[ callbackName ] = overwritten;\n\t\t\t}\n\n\t\t\t// Save back as free\n\t\t\tif ( s[ callbackName ] ) {\n\n\t\t\t\t// Make sure that re-using the options doesn't screw things around\n\t\t\t\ts.jsonpCallback = originalSettings.jsonpCallback;\n\n\t\t\t\t// Save the callback name for future use\n\t\t\t\toldCallbacks.push( callbackName );\n\t\t\t}\n\n\t\t\t// Call if it was a function and we have a response\n\t\t\tif ( responseContainer && isFunction( overwritten ) ) {\n\t\t\t\toverwritten( responseContainer[ 0 ] );\n\t\t\t}\n\n\t\t\tresponseContainer = overwritten = undefined;\n\t\t} );\n\n\t\t// Delegate to script\n\t\treturn \"script\";\n\t}\n} );\n\n\n\n\n// Support: Safari 8 only\n// In Safari 8 documents created via document.implementation.createHTMLDocument\n// collapse sibling forms: the second one becomes a child of the first one.\n// Because of that, this security measure has to be disabled in Safari 8.\n// https://bugs.webkit.org/show_bug.cgi?id=137337\nsupport.createHTMLDocument = ( function() {\n\tvar body = document.implementation.createHTMLDocument( \"\" ).body;\n\tbody.innerHTML = \"<form></form><form></form>\";\n\treturn body.childNodes.length === 2;\n} )();\n\n\n// Argument \"data\" should be string of html\n// context (optional): If specified, the fragment will be created in this context,\n// defaults to document\n// keepScripts (optional): If true, will include scripts passed in the html string\njQuery.parseHTML = function( data, context, keepScripts ) {\n\tif ( typeof data !== \"string\" ) {\n\t\treturn [];\n\t}\n\tif ( typeof context === \"boolean\" ) {\n\t\tkeepScripts = context;\n\t\tcontext = false;\n\t}\n\n\tvar base, parsed, scripts;\n\n\tif ( !context ) {\n\n\t\t// Stop scripts or inline event handlers from being executed immediately\n\t\t// by using document.implementation\n\t\tif ( support.createHTMLDocument ) {\n\t\t\tcontext = document.implementation.createHTMLDocument( \"\" );\n\n\t\t\t// Set the base href for the created document\n\t\t\t// so any parsed elements with URLs\n\t\t\t// are based on the document's URL (gh-2965)\n\t\t\tbase = context.createElement( \"base\" );\n\t\t\tbase.href = document.location.href;\n\t\t\tcontext.head.appendChild( base );\n\t\t} else {\n\t\t\tcontext = document;\n\t\t}\n\t}\n\n\tparsed = rsingleTag.exec( data );\n\tscripts = !keepScripts && [];\n\n\t// Single tag\n\tif ( parsed ) {\n\t\treturn [ context.createElement( parsed[ 1 ] ) ];\n\t}\n\n\tparsed = buildFragment( [ data ], context, scripts );\n\n\tif ( scripts && scripts.length ) {\n\t\tjQuery( scripts ).remove();\n\t}\n\n\treturn jQuery.merge( [], parsed.childNodes );\n};\n\n\n/**\n * Load a url into a page\n */\njQuery.fn.load = function( url, params, callback ) {\n\tvar selector, type, response,\n\t\tself = this,\n\t\toff = url.indexOf( \" \" );\n\n\tif ( off > -1 ) {\n\t\tselector = stripAndCollapse( url.slice( off ) );\n\t\turl = url.slice( 0, off );\n\t}\n\n\t// If it's a function\n\tif ( isFunction( params ) ) {\n\n\t\t// We assume that it's the callback\n\t\tcallback = params;\n\t\tparams = undefined;\n\n\t// Otherwise, build a param string\n\t} else if ( params && typeof params === \"object\" ) {\n\t\ttype = \"POST\";\n\t}\n\n\t// If we have elements to modify, make the request\n\tif ( self.length > 0 ) {\n\t\tjQuery.ajax( {\n\t\t\turl: url,\n\n\t\t\t// If \"type\" variable is undefined, then \"GET\" method will be used.\n\t\t\t// Make value of this field explicit since\n\t\t\t// user can override it through ajaxSetup method\n\t\t\ttype: type || \"GET\",\n\t\t\tdataType: \"html\",\n\t\t\tdata: params\n\t\t} ).done( function( responseText ) {\n\n\t\t\t// Save response for use in complete callback\n\t\t\tresponse = arguments;\n\n\t\t\tself.html( selector ?\n\n\t\t\t\t// If a selector was specified, locate the right elements in a dummy div\n\t\t\t\t// Exclude scripts to avoid IE 'Permission Denied' errors\n\t\t\t\tjQuery( \"<div>\" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :\n\n\t\t\t\t// Otherwise use the full result\n\t\t\t\tresponseText );\n\n\t\t// If the request succeeds, this function gets \"data\", \"status\", \"jqXHR\"\n\t\t// but they are ignored because response was set above.\n\t\t// If it fails, this function gets \"jqXHR\", \"status\", \"error\"\n\t\t} ).always( callback && function( jqXHR, status ) {\n\t\t\tself.each( function() {\n\t\t\t\tcallback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );\n\t\t\t} );\n\t\t} );\n\t}\n\n\treturn this;\n};\n\n\n\n\njQuery.expr.pseudos.animated = function( elem ) {\n\treturn jQuery.grep( jQuery.timers, function( fn ) {\n\t\treturn elem === fn.elem;\n\t} ).length;\n};\n\n\n\n\njQuery.offset = {\n\tsetOffset: function( elem, options, i ) {\n\t\tvar curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,\n\t\t\tposition = jQuery.css( elem, \"position\" ),\n\t\t\tcurElem = jQuery( elem ),\n\t\t\tprops = {};\n\n\t\t// Set position first, in-case top/left are set even on static elem\n\t\tif ( position === \"static\" ) {\n\t\t\telem.style.position = \"relative\";\n\t\t}\n\n\t\tcurOffset = curElem.offset();\n\t\tcurCSSTop = jQuery.css( elem, \"top\" );\n\t\tcurCSSLeft = jQuery.css( elem, \"left\" );\n\t\tcalculatePosition = ( position === \"absolute\" || position === \"fixed\" ) &&\n\t\t\t( curCSSTop + curCSSLeft ).indexOf( \"auto\" ) > -1;\n\n\t\t// Need to be able to calculate position if either\n\t\t// top or left is auto and position is either absolute or fixed\n\t\tif ( calculatePosition ) {\n\t\t\tcurPosition = curElem.position();\n\t\t\tcurTop = curPosition.top;\n\t\t\tcurLeft = curPosition.left;\n\n\t\t} else {\n\t\t\tcurTop = parseFloat( curCSSTop ) || 0;\n\t\t\tcurLeft = parseFloat( curCSSLeft ) || 0;\n\t\t}\n\n\t\tif ( isFunction( options ) ) {\n\n\t\t\t// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)\n\t\t\toptions = options.call( elem, i, jQuery.extend( {}, curOffset ) );\n\t\t}\n\n\t\tif ( options.top != null ) {\n\t\t\tprops.top = ( options.top - curOffset.top ) + curTop;\n\t\t}\n\t\tif ( options.left != null ) {\n\t\t\tprops.left = ( options.left - curOffset.left ) + curLeft;\n\t\t}\n\n\t\tif ( \"using\" in options ) {\n\t\t\toptions.using.call( elem, props );\n\n\t\t} else {\n\t\t\tcurElem.css( props );\n\t\t}\n\t}\n};\n\njQuery.fn.extend( {\n\n\t// offset() relates an element's border box to the document origin\n\toffset: function( options ) {\n\n\t\t// Preserve chaining for setter\n\t\tif ( arguments.length ) {\n\t\t\treturn options === undefined ?\n\t\t\t\tthis :\n\t\t\t\tthis.each( function( i ) {\n\t\t\t\t\tjQuery.offset.setOffset( this, options, i );\n\t\t\t\t} );\n\t\t}\n\n\t\tvar rect, win,\n\t\t\telem = this[ 0 ];\n\n\t\tif ( !elem ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n\t\t// Support: IE <=11 only\n\t\t// Running getBoundingClientRect on a\n\t\t// disconnected node in IE throws an error\n\t\tif ( !elem.getClientRects().length ) {\n\t\t\treturn { top: 0, left: 0 };\n\t\t}\n\n\t\t// Get document-relative position by adding viewport scroll to viewport-relative gBCR\n\t\trect = elem.getBoundingClientRect();\n\t\twin = elem.ownerDocument.defaultView;\n\t\treturn {\n\t\t\ttop: rect.top + win.pageYOffset,\n\t\t\tleft: rect.left + win.pageXOffset\n\t\t};\n\t},\n\n\t// position() relates an element's margin box to its offset parent's padding box\n\t// This corresponds to the behavior of CSS absolute positioning\n\tposition: function() {\n\t\tif ( !this[ 0 ] ) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar offsetParent, offset, doc,\n\t\t\telem = this[ 0 ],\n\t\t\tparentOffset = { top: 0, left: 0 };\n\n\t\t// position:fixed elements are offset from the viewport, which itself always has zero offset\n\t\tif ( jQuery.css( elem, \"position\" ) === \"fixed\" ) {\n\n\t\t\t// Assume position:fixed implies availability of getBoundingClientRect\n\t\t\toffset = elem.getBoundingClientRect();\n\n\t\t} else {\n\t\t\toffset = this.offset();\n\n\t\t\t// Account for the *real* offset parent, which can be the document or its root element\n\t\t\t// when a statically positioned element is identified\n\t\t\tdoc = elem.ownerDocument;\n\t\t\toffsetParent = elem.offsetParent || doc.documentElement;\n\t\t\twhile ( offsetParent &&\n\t\t\t\t( offsetParent === doc.body || offsetParent === doc.documentElement ) &&\n\t\t\t\tjQuery.css( offsetParent, \"position\" ) === \"static\" ) {\n\n\t\t\t\toffsetParent = offsetParent.parentNode;\n\t\t\t}\n\t\t\tif ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) {\n\n\t\t\t\t// Incorporate borders into its offset, since they are outside its content origin\n\t\t\t\tparentOffset = jQuery( offsetParent ).offset();\n\t\t\t\tparentOffset.top += jQuery.css( offsetParent, \"borderTopWidth\", true );\n\t\t\t\tparentOffset.left += jQuery.css( offsetParent, \"borderLeftWidth\", true );\n\t\t\t}\n\t\t}\n\n\t\t// Subtract parent offsets and element margins\n\t\treturn {\n\t\t\ttop: offset.top - parentOffset.top - jQuery.css( elem, \"marginTop\", true ),\n\t\t\tleft: offset.left - parentOffset.left - jQuery.css( elem, \"marginLeft\", true )\n\t\t};\n\t},\n\n\t// This method will return documentElement in the following cases:\n\t// 1) For the element inside the iframe without offsetParent, this method will return\n\t//    documentElement of the parent window\n\t// 2) For the hidden or detached element\n\t// 3) For body or html element, i.e. in case of the html node - it will return itself\n\t//\n\t// but those exceptions were never presented as a real life use-cases\n\t// and might be considered as more preferable results.\n\t//\n\t// This logic, however, is not guaranteed and can change at any point in the future\n\toffsetParent: function() {\n\t\treturn this.map( function() {\n\t\t\tvar offsetParent = this.offsetParent;\n\n\t\t\twhile ( offsetParent && jQuery.css( offsetParent, \"position\" ) === \"static\" ) {\n\t\t\t\toffsetParent = offsetParent.offsetParent;\n\t\t\t}\n\n\t\t\treturn offsetParent || documentElement;\n\t\t} );\n\t}\n} );\n\n// Create scrollLeft and scrollTop methods\njQuery.each( { scrollLeft: \"pageXOffset\", scrollTop: \"pageYOffset\" }, function( method, prop ) {\n\tvar top = \"pageYOffset\" === prop;\n\n\tjQuery.fn[ method ] = function( val ) {\n\t\treturn access( this, function( elem, method, val ) {\n\n\t\t\t// Coalesce documents and windows\n\t\t\tvar win;\n\t\t\tif ( isWindow( elem ) ) {\n\t\t\t\twin = elem;\n\t\t\t} else if ( elem.nodeType === 9 ) {\n\t\t\t\twin = elem.defaultView;\n\t\t\t}\n\n\t\t\tif ( val === undefined ) {\n\t\t\t\treturn win ? win[ prop ] : elem[ method ];\n\t\t\t}\n\n\t\t\tif ( win ) {\n\t\t\t\twin.scrollTo(\n\t\t\t\t\t!top ? val : win.pageXOffset,\n\t\t\t\t\ttop ? val : win.pageYOffset\n\t\t\t\t);\n\n\t\t\t} else {\n\t\t\t\telem[ method ] = val;\n\t\t\t}\n\t\t}, method, val, arguments.length );\n\t};\n} );\n\n// Support: Safari <=7 - 9.1, Chrome <=37 - 49\n// Add the top/left cssHooks using jQuery.fn.position\n// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084\n// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347\n// getComputedStyle returns percent when specified for top/left/bottom/right;\n// rather than make the css module depend on the offset module, just check for it here\njQuery.each( [ \"top\", \"left\" ], function( _i, prop ) {\n\tjQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,\n\t\tfunction( elem, computed ) {\n\t\t\tif ( computed ) {\n\t\t\t\tcomputed = curCSS( elem, prop );\n\n\t\t\t\t// If curCSS returns percentage, fallback to offset\n\t\t\t\treturn rnumnonpx.test( computed ) ?\n\t\t\t\t\tjQuery( elem ).position()[ prop ] + \"px\" :\n\t\t\t\t\tcomputed;\n\t\t\t}\n\t\t}\n\t);\n} );\n\n\n// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods\njQuery.each( { Height: \"height\", Width: \"width\" }, function( name, type ) {\n\tjQuery.each( {\n\t\tpadding: \"inner\" + name,\n\t\tcontent: type,\n\t\t\"\": \"outer\" + name\n\t}, function( defaultExtra, funcName ) {\n\n\t\t// Margin is only for outerHeight, outerWidth\n\t\tjQuery.fn[ funcName ] = function( margin, value ) {\n\t\t\tvar chainable = arguments.length && ( defaultExtra || typeof margin !== \"boolean\" ),\n\t\t\t\textra = defaultExtra || ( margin === true || value === true ? \"margin\" : \"border\" );\n\n\t\t\treturn access( this, function( elem, type, value ) {\n\t\t\t\tvar doc;\n\n\t\t\t\tif ( isWindow( elem ) ) {\n\n\t\t\t\t\t// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)\n\t\t\t\t\treturn funcName.indexOf( \"outer\" ) === 0 ?\n\t\t\t\t\t\telem[ \"inner\" + name ] :\n\t\t\t\t\t\telem.document.documentElement[ \"client\" + name ];\n\t\t\t\t}\n\n\t\t\t\t// Get document width or height\n\t\t\t\tif ( elem.nodeType === 9 ) {\n\t\t\t\t\tdoc = elem.documentElement;\n\n\t\t\t\t\t// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],\n\t\t\t\t\t// whichever is greatest\n\t\t\t\t\treturn Math.max(\n\t\t\t\t\t\telem.body[ \"scroll\" + name ], doc[ \"scroll\" + name ],\n\t\t\t\t\t\telem.body[ \"offset\" + name ], doc[ \"offset\" + name ],\n\t\t\t\t\t\tdoc[ \"client\" + name ]\n\t\t\t\t\t);\n\t\t\t\t}\n\n\t\t\t\treturn value === undefined ?\n\n\t\t\t\t\t// Get width or height on the element, requesting but not forcing parseFloat\n\t\t\t\t\tjQuery.css( elem, type, extra ) :\n\n\t\t\t\t\t// Set width or height on the element\n\t\t\t\t\tjQuery.style( elem, type, value, extra );\n\t\t\t}, type, chainable ? margin : undefined, chainable );\n\t\t};\n\t} );\n} );\n\n\njQuery.each( [\n\t\"ajaxStart\",\n\t\"ajaxStop\",\n\t\"ajaxComplete\",\n\t\"ajaxError\",\n\t\"ajaxSuccess\",\n\t\"ajaxSend\"\n], function( _i, type ) {\n\tjQuery.fn[ type ] = function( fn ) {\n\t\treturn this.on( type, fn );\n\t};\n} );\n\n\n\n\njQuery.fn.extend( {\n\n\tbind: function( types, data, fn ) {\n\t\treturn this.on( types, null, data, fn );\n\t},\n\tunbind: function( types, fn ) {\n\t\treturn this.off( types, null, fn );\n\t},\n\n\tdelegate: function( selector, types, data, fn ) {\n\t\treturn this.on( types, selector, data, fn );\n\t},\n\tundelegate: function( selector, types, fn ) {\n\n\t\t// ( namespace ) or ( selector, types [, fn] )\n\t\treturn arguments.length === 1 ?\n\t\t\tthis.off( selector, \"**\" ) :\n\t\t\tthis.off( types, selector || \"**\", fn );\n\t},\n\n\thover: function( fnOver, fnOut ) {\n\t\treturn this\n\t\t\t.on( \"mouseenter\", fnOver )\n\t\t\t.on( \"mouseleave\", fnOut || fnOver );\n\t}\n} );\n\njQuery.each(\n\t( \"blur focus focusin focusout resize scroll click dblclick \" +\n\t\"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave \" +\n\t\"change select submit keydown keypress keyup contextmenu\" ).split( \" \" ),\n\tfunction( _i, name ) {\n\n\t\t// Handle event binding\n\t\tjQuery.fn[ name ] = function( data, fn ) {\n\t\t\treturn arguments.length > 0 ?\n\t\t\t\tthis.on( name, null, data, fn ) :\n\t\t\t\tthis.trigger( name );\n\t\t};\n\t}\n);\n\n\n\n\n// Support: Android <=4.0 only\n// Make sure we trim BOM and NBSP\n// Require that the \"whitespace run\" starts from a non-whitespace\n// to avoid O(N^2) behavior when the engine would try matching \"\\s+$\" at each space position.\nvar rtrim = /^[\\s\\uFEFF\\xA0]+|([^\\s\\uFEFF\\xA0])[\\s\\uFEFF\\xA0]+$/g;\n\n// Bind a function to a context, optionally partially applying any\n// arguments.\n// jQuery.proxy is deprecated to promote standards (specifically Function#bind)\n// However, it is not slated for removal any time soon\njQuery.proxy = function( fn, context ) {\n\tvar tmp, args, proxy;\n\n\tif ( typeof context === \"string\" ) {\n\t\ttmp = fn[ context ];\n\t\tcontext = fn;\n\t\tfn = tmp;\n\t}\n\n\t// Quick check to determine if target is callable, in the spec\n\t// this throws a TypeError, but we will just return undefined.\n\tif ( !isFunction( fn ) ) {\n\t\treturn undefined;\n\t}\n\n\t// Simulated bind\n\targs = slice.call( arguments, 2 );\n\tproxy = function() {\n\t\treturn fn.apply( context || this, args.concat( slice.call( arguments ) ) );\n\t};\n\n\t// Set the guid of unique handler to the same of original handler, so it can be removed\n\tproxy.guid = fn.guid = fn.guid || jQuery.guid++;\n\n\treturn proxy;\n};\n\njQuery.holdReady = function( hold ) {\n\tif ( hold ) {\n\t\tjQuery.readyWait++;\n\t} else {\n\t\tjQuery.ready( true );\n\t}\n};\njQuery.isArray = Array.isArray;\njQuery.parseJSON = JSON.parse;\njQuery.nodeName = nodeName;\njQuery.isFunction = isFunction;\njQuery.isWindow = isWindow;\njQuery.camelCase = camelCase;\njQuery.type = toType;\n\njQuery.now = Date.now;\n\njQuery.isNumeric = function( obj ) {\n\n\t// As of jQuery 3.0, isNumeric is limited to\n\t// strings and numbers (primitives or objects)\n\t// that can be coerced to finite numbers (gh-2662)\n\tvar type = jQuery.type( obj );\n\treturn ( type === \"number\" || type === \"string\" ) &&\n\n\t\t// parseFloat NaNs numeric-cast false positives (\"\")\n\t\t// ...but misinterprets leading-number strings, particularly hex literals (\"0x...\")\n\t\t// subtraction forces infinities to NaN\n\t\t!isNaN( obj - parseFloat( obj ) );\n};\n\njQuery.trim = function( text ) {\n\treturn text == null ?\n\t\t\"\" :\n\t\t( text + \"\" ).replace( rtrim, \"$1\" );\n};\n\n\n\n// Register as a named AMD module, since jQuery can be concatenated with other\n// files that may use define, but not via a proper concatenation script that\n// understands anonymous AMD modules. A named AMD is safest and most robust\n// way to register. Lowercase jquery is used because AMD module names are\n// derived from file names, and jQuery is normally delivered in a lowercase\n// file name. Do this after creating the global so that if an AMD module wants\n// to call noConflict to hide this version of jQuery, it will work.\n\n// Note that for maximum portability, libraries that are not jQuery should\n// declare themselves as anonymous modules, and avoid setting a global if an\n// AMD loader is present. jQuery is a special case. For more information, see\n// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon\n\nif ( typeof define === \"function\" && define.amd ) {\n\tdefine( \"jquery\", [], function() {\n\t\treturn jQuery;\n\t} );\n}\n\n\n\n\nvar\n\n\t// Map over jQuery in case of overwrite\n\t_jQuery = window.jQuery,\n\n\t// Map over the $ in case of overwrite\n\t_$ = window.$;\n\njQuery.noConflict = function( deep ) {\n\tif ( window.$ === jQuery ) {\n\t\twindow.$ = _$;\n\t}\n\n\tif ( deep && window.jQuery === jQuery ) {\n\t\twindow.jQuery = _jQuery;\n\t}\n\n\treturn jQuery;\n};\n\n// Expose jQuery and $ identifiers, even in AMD\n// (trac-7102#comment:10, https://github.com/jquery/jquery/pull/557)\n// and CommonJS for browser emulators (trac-13566)\nif ( typeof noGlobal === \"undefined\" ) {\n\twindow.jQuery = window.$ = jQuery;\n}\n\n\n\n\nreturn jQuery;\n} );\n","/**\n * {@link Session} state.\n *\n * @remarks\n * The {@link Session} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   ___________________________________________________________\n *                  |  ____________________________________________             |\n *                  | |            ____________________________    |            |\n * Session          | |           |                            v   v            v\n * Constructed -> Initial -> Establishing -> Established -> Terminating -> Terminated\n *                                |               |___________________________^   ^\n *                                |_______________________________________________|\n * ```\n * @public\n */\nexport var SessionState;\n(function (SessionState) {\n    /**\n     * If `Inviter`, INVITE not sent yet.\n     * If `Invitation`, received INVITE (but no final response sent yet).\n     */\n    SessionState[\"Initial\"] = \"Initial\";\n    /**\n     * If `Inviter`, sent INVITE and waiting for a final response.\n     * If `Invitation`, received INVITE and attempting to send 200 final response (but has not sent it yet).\n     */\n    SessionState[\"Establishing\"] = \"Establishing\";\n    /**\n     * If `Inviter`, sent INVITE and received 200 final response and sent ACK.\n     * If `Invitation`, received INVITE and sent 200 final response.\n     */\n    SessionState[\"Established\"] = \"Established\";\n    /**\n     * If `Inviter`, sent INVITE, sent CANCEL and now waiting for 487 final response to ACK (or 200 to ACK & BYE).\n     * If `Invitation`, received INVITE, sent 200 final response and now waiting on ACK and upon receipt will attempt BYE\n     * (as the protocol specification requires, before sending a BYE we must receive the ACK - so we are waiting).\n     */\n    SessionState[\"Terminating\"] = \"Terminating\";\n    /**\n     * If `Inviter`, sent INVITE and received non-200 final response (or sent/received BYE after receiving 200).\n     * If `Invitation`, received INVITE and sent non-200 final response (or sent/received BYE after sending 200).\n     */\n    SessionState[\"Terminated\"] = \"Terminated\";\n})(SessionState = SessionState || (SessionState = {}));\n","import { Levels as LogLevels } from 'sip.js/lib/core/log/levels';\nimport type { LogLevel } from 'sip.js/lib/api/user-agent-options';\nimport type {\n  SessionDescriptionHandlerModifier,\n  UserAgentOptions,\n  LogConnector,\n  SessionDescriptionHandlerFactory,\n} from 'sip.js';\nimport { UserAgent, Web } from 'sip.js';\n\nimport type { WebPhoneUserAgent } from './userAgent';\nimport { createWebPhoneUserAgent } from './userAgent';\nimport { default as MediaStreams, MediaStreamsImpl } from './mediaStreams';\nimport { uuid, extend } from './utils';\nimport {\n  uuidKey,\n  defaultMediaConstraints,\n  defaultLogLevel,\n  defaultSipErrorCodes,\n  defaultStunServers,\n} from './constants';\nimport type { WebPhoneSession } from './session';\nimport type { WebPhoneSessionDescriptionHandlerFactoryOptions } from './sessionDescriptionHandler';\nimport { defaultSessionDescriptionFactory } from './sessionDescriptionHandler';\nimport type { AudioHelperOptions } from './audioHelper';\n\nimport pkg from '../package.json';\n\nconst version = pkg.version;\n\nexport interface TransportServer {\n  uri: string;\n  isError?: boolean;\n}\n\nexport interface WebPhoneRegistrationData {\n  /** Sip Info received after registering device with RingCentral */\n  sipInfo?: Array<SipInfo> | SipInfo;\n  /** Sip error codes */\n  sipErrorCodes?: string[];\n}\n\nexport interface SipInfo {\n  /** Username to connect to transport */\n  username: string;\n  /** Password to connect to transport */\n  password: string;\n  /** Authorization Id to connect to transport */\n  authorizationId: string;\n  /** Domain of transport server */\n  domain: string;\n  /** URL for outbound transport proxy */\n  outboundProxy: string;\n  /** V6 IP address for outbound transport proxy */\n  outboundProxyIPv6?: string;\n  /** URL for outbound backup transport proxy */\n  outboundProxyBackup: string;\n  /** V6 IP address for outbound backup transport proxy */\n  outboundProxyIPv6Backup?: string;\n  /** Transport type */\n  transport: 'UDP' | 'TCP' | 'TLS' | 'WS' | 'WSS';\n  /** Certificate to connect to transport */\n  certificate: string;\n  /** The interval in seconds after which the app must try to switch back to primary proxy if it was previously switched to backup */\n  switchBackInterval: number;\n}\n\nexport interface WebPhoneOptions {\n  /** Client ID of the RingCentral Developer app */\n  clientId?: string;\n  /** Name used in user agent string */\n  appName?: string;\n  /** Version used in user agent string */\n  appVersion?: string;\n  /**\n   * @internal\n   * Helper class to load incoming and outgoing audio. The library already comes with an implementation of this class\n   *\n   * Can be overridden but the custom class should have `loadAudio`, `setVolume`, `playIncoming` and `playOutgoing` methods\n   */\n  audioHelper?: AudioHelperOptions;\n  /** If `true`, user agent calls the stop() method on unload (if running in browser window).\n   *\n   * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.useragentoptions.autostop.md)\n   *\n   * default value `true`\n   */\n  autoStop?: boolean;\n  /** If `true` log messages should be written to the browser console.\n   *\n   * default value `true`\n   */\n  builtinEnabled?: boolean;\n  /** A function which will be called every time a log is generated. [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.logconnector.md) */\n  connector?: LogConnector;\n  /** If `true` media will be sent prior to call being answered\n   *\n   * Set to `true` by default for firefox browser\n   *\n   * default value `false`\n   */\n  earlyMedia?: boolean;\n  /** If `true`, `stripG722` and `stripTcpCandidates` modifiers will be enabled in SessionDescriptionHandler\n   *\n   * default value `true`\n   */\n  enableDefaultModifiers?: boolean;\n  /** If `true`, dscp is enabled for senders track in peer connection\n   *\n   * default value `false`\n   */\n  enableDscp?: boolean;\n  /** If `true`, media report is logged using logger */\n  enableMediaReportLogging?: boolean;\n  /** is `true`, `addMidLines` modifiers will be enabled in SessionDescriptionHandler */\n  enableMidLinesInSDP?: boolean;\n  /** Use SDP format instead of standards conformant format\n   *\n   * https://chromestatus.com/feature/5723303167655936\n   */\n  enablePlanB?: boolean;\n  /** If `true`, QOS data will be collected when session starts */\n  enableQos?: boolean;\n  /** If `true`, turn servers passed with configuration will be used when generating ice candidates */\n  enableTurnServers?: boolean;\n  /** Max time in milliseconds to be considered when generating ice candidates\n   *\n   * default value `2000` when `enableTurnServers` is `true`, otherwise `500`\n   */\n  iceCheckingTimeout?: number;\n  /** Policy used when generating ice candidates\n   *\n   * default value `all`\n   */\n  iceTransportPolicy?: RTCIceTransportPolicy;\n  /** UUID to provide with \"+sip.instance\" Contact parameter. */\n  instanceId?: string;\n  /** Time in seconds to debounce sending CLRF keepAlive sequences by\n   *\n   * default value `10`\n   */\n  keepAliveDebounce?: number;\n  /** Time in seconds to wait in between CLRF keepAlive sequences are sent\n   *\n   * default value `0`\n   */\n  keepAliveInterval?: number;\n  /** Indicates the verbosity level of the log messages.\n   *\n   * 0 = Error\n   * 1 = Warn\n   * 2 = Log\n   * 3 = Debug\n   *\n   * default value `0`\n   */\n  logLevel?: 0 | 1 | 2 | 3;\n  /** Max retry attempts used for retrying to connect to outbound proxy when transport is disconnected\n   *\n   * If value is passed, `maxReconnectionAttempts` and `maxReconnectionAttemptsNoBackup` will be ignored\n   *\n   * If value is not passed, retry attempts will be decided using `maxReconnectionAttempts` and `maxReconnectionAttemptsNoBackup` depending on what proxy the transport connects to\n   */\n  maxReconnectionAttempts?: number;\n  /** Max retry attempts used for retrying to connect to outbound proxy when transport is disconnected\n   *\n   * default value `15`\n   */\n  maxReconnectionAttemptsNoBackup?: number;\n  /** Max retry attempts used for retrying to connect to outbound backup proxy when transport is disconnected\n   *\n   * default value `10`\n   */\n  maxReconnectionAttemptsWithBackup?: number;\n  /** local and remote reference to HTML media elements */\n  media?: { local?: HTMLMediaElement; remote?: HTMLMediaElement };\n  /** Constraints used when creating peerConnection\n   *\n   * default value `{ audio: true, video: false }`\n   */\n  mediaConstraints?: { audio: boolean; video: boolean };\n  /** Default modifiers used for SessionDescriptionHandler\n   *\n   * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.sessiondescriptionhandlermodifier.md)\n   */\n  modifiers?: SessionDescriptionHandlerModifier[];\n  /** Callback function called when session is created */\n  onSession?: (session: WebPhoneSession) => void;\n  /** Recurring time interval in seconds after which QOS stats are collected\n   *\n   * default value `5000`\n   */\n  qosCollectInterval?: number;\n  /** Timeout before which reconnection is attempted when transport disconnects\n   *\n   * If value is passed, `reconnectionTimeoutNoBackup` and `reconnectionTimeoutNoBackup` will be ignored\n   *\n   * If value is not passed, reconnection timeout will be decided using `reconnectionTimeoutNoBackup` and `reconnectionTimeoutNoBackup` depending on what proxy the transport connects to\n   */\n  reconnectionTimeout?: number;\n  /** Timeout before which reconnection is attempted when transport disconnects when connected to outbound proxy\n   *\n   * default value `5`\n   */\n  reconnectionTimeoutNoBackup?: number;\n  /** Timeout before which reconnection is attempted when transport disconnects when connected to outbound backup proxy\n   *\n   * default value `4`\n   */\n  reconnectionTimeoutWithBackup?: number;\n  /** Value to provide with \"reg-id\" Contact parameter. when registering */\n  regId?: number;\n  /** Factory for SessionDescriptionHandler.\n   *\n   * The library already uses a default implementation\n   */\n  sessionDescriptionHandlerFactory?: SessionDescriptionHandlerFactory;\n  /** Options for SessionDescriptionHandler\n   *\n   * If a value is passed, options like enableDscp, iceCheckingTimeout, turnServers, stunServers, iceTransportPolicynd enablePlanBre ignored\n   *\n   * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.sessiondescriptionhandleroptions.md)\n   */\n  sessionDescriptionHandlerFactoryOptions?: WebPhoneSessionDescriptionHandlerFactoryOptions;\n  /** Sip error codes. This value is picked from registrationData\n   *\n   * default value `['408', '502', '503', '504']` if registrationData does not have `sipErrorCodes`\n   * @internal\n   */\n  sipErrorCodes?: string[];\n  /** Stun servers used when generating ice candidates\n   *\n   * default value `['stun.l.google.com:19302']`\n   */\n  stunServers?: string[];\n  /** Time in seconds to try connecting back to outbound proxy when transport has connected to backup outbound proxy */\n  switchBackInterval?: number;\n  /**\n   * @internal\n   * Used to store transport server details\n   */\n  transportServers?: TransportServer[];\n  /** Turn servers used when generating ice candidates */\n  turnServers?: string[];\n  /** Unique ID used to make calls to SIP server\n   *\n   * Is generated by the library if not passed\n   */\n  uuid?: string;\n  /** Key that will be used to save uuid in localStorage\n   *\n   * default value is used by the library if not passed\n   *\n   * default value `rc-webPhone-uuid`\n   */\n  uuidKey?: string;\n}\n\nconst defaultWebPhoneOptions: WebPhoneOptions = {\n  autoStop: true,\n  builtinEnabled: true,\n  earlyMedia: false,\n  enableDefaultModifiers: true,\n  enableDscp: false,\n  iceTransportPolicy: 'all',\n  maxReconnectionAttemptsNoBackup: 15,\n  maxReconnectionAttemptsWithBackup: 10,\n  mediaConstraints: defaultMediaConstraints,\n  modifiers: [],\n  // FIXME: This should be in seconds since every other config is in seconds\n  qosCollectInterval: 5000,\n  reconnectionTimeoutNoBackup: 5,\n  reconnectionTimeoutWithBackup: 4,\n  transportServers: [],\n  turnServers: [],\n  uuid: uuid(),\n  uuidKey,\n};\n\n/**\n * WebPhone class to initiate WebRTC calls\n */\nexport default class WebPhone {\n  /** WebPhone version */\n  public static version = version;\n  /** Utility function to generate uuid */\n  public static uuid = uuid;\n  /** Utility function to extend object */\n  public static extend = extend;\n\n  public static MediaStreams = MediaStreams;\n  public static MediaStreamsImpl = MediaStreamsImpl;\n\n  /** Sip Info received from the registration endpoint */\n  public sipInfo: SipInfo;\n  /** Key that will be used to save uuid in localStorage */\n  public uuidKey: string | undefined;\n  /** Name used in user agent string */\n  public appName: string | undefined;\n  /** Version used in user agent string */\n  public appVersion: string | undefined;\n  /** WebPhoneUserAgent instance */\n  public userAgent: WebPhoneUserAgent;\n\n  /**\n   * TODO: include 'WebPhone' for all apps other than Chrome and Glip\n   * TODO: parse wsservers from new api spec\n   */\n  // eslint-disable-next-line complexity\n  public constructor(registrationData: WebPhoneRegistrationData = {}, _options: WebPhoneOptions = {}) {\n    const options = { ...defaultWebPhoneOptions, ..._options };\n\n    this.sipInfo = registrationData.sipInfo as SipInfo;\n    if (Array.isArray(this.sipInfo)) {\n      this.sipInfo = this.sipInfo[0];\n    }\n    this.uuidKey = options.uuidKey;\n    this.appName = options.appName;\n    this.appVersion = options.appVersion;\n\n    const id = options.uuid;\n    localStorage.setItem(this.uuidKey as string, id as string);\n    const uaMatch = navigator.userAgent.match(/\\((.*?)\\)/);\n    const appClientOs = uaMatch === null ? '' : uaMatch[1].replace(/[^a-zA-Z0-9.:_]+/g, '-');\n\n    const userAgentString =\n      (this.appName ? this.appName + (this.appVersion ? '/' + this.appVersion : '') + ' ' : '') +\n      (appClientOs ? appClientOs : '') +\n      ` RCWEBPHONE/${WebPhone.version}`;\n\n    const modifiers = options.modifiers!;\n\n    if (!options.enableDefaultModifiers) {\n      modifiers.push(Web.stripG722);\n      modifiers.push(Web.stripTcpCandidates);\n    }\n\n    if (options.enableMidLinesInSDP) {\n      modifiers.push(Web.addMidLines);\n    }\n\n    const sdpSemantics = options.enablePlanB ? 'plan-b' : 'unified-plan';\n\n    const stunServers = options.stunServers || defaultStunServers;\n    const iceTransportPolicy = options.iceTransportPolicy;\n    let iceServers: Array<RTCIceServer> = [];\n    if (options.enableTurnServers) {\n      iceServers = options.turnServers!.map((url) => ({ urls: url }));\n      options.iceCheckingTimeout = options.iceCheckingTimeout || 2000;\n    }\n    iceServers = [\n      ...iceServers,\n      ...stunServers.map((_url) => {\n        const url = !/^(stun:)/.test(_url) ? `stun:${_url}` : _url;\n        return { urls: url };\n      }),\n    ];\n\n    const sessionDescriptionHandlerFactoryOptions = options.sessionDescriptionHandlerFactoryOptions || {\n      iceGatheringTimeout: options.iceCheckingTimeout || 500,\n      enableDscp: options.enableDscp,\n      peerConnectionConfiguration: {\n        iceServers,\n        iceTransportPolicy,\n        sdpSemantics,\n      },\n    };\n\n    sessionDescriptionHandlerFactoryOptions.enableDscp = !!options.enableDscp;\n\n    options.modifiers = modifiers;\n\n    const browserUa = navigator.userAgent.toLowerCase();\n\n    if (browserUa.includes('firefox') && !browserUa.includes('chrome')) {\n      // FIXME: alwaysAcquireMediaFirst has been removed from SIP.js. Is it the same as earlyMedia?\n      options.earlyMedia = true;\n    }\n\n    const sessionDescriptionHandlerFactory =\n      options.sessionDescriptionHandlerFactory || defaultSessionDescriptionFactory;\n\n    const sipErrorCodes = registrationData.sipErrorCodes?.length\n      ? registrationData.sipErrorCodes\n      : defaultSipErrorCodes;\n\n    let reconnectionTimeout = options.reconnectionTimeoutWithBackup;\n    let maxReconnectionAttempts = options.maxReconnectionAttemptsWithBackup;\n    if (this.sipInfo.outboundProxy && this.sipInfo.transport) {\n      options.transportServers!.push({\n        uri: this.sipInfo.transport.toLowerCase() + '://' + this.sipInfo.outboundProxy,\n      });\n      reconnectionTimeout = options.reconnectionTimeoutNoBackup;\n      maxReconnectionAttempts = options.maxReconnectionAttemptsNoBackup;\n    }\n\n    if (this.sipInfo.outboundProxyBackup && this.sipInfo.transport) {\n      options.transportServers!.push({\n        uri: this.sipInfo.transport.toLowerCase() + '://' + this.sipInfo.outboundProxyBackup,\n      });\n    }\n\n    options.reconnectionTimeout = options.reconnectionTimeout || reconnectionTimeout;\n    options.maxReconnectionAttempts = options.maxReconnectionAttempts || maxReconnectionAttempts;\n\n    const transportServer = options.transportServers!.length ? options.transportServers![0].uri : '';\n\n    const configuration: UserAgentOptions = {\n      uri: UserAgent.makeURI(`sip:${this.sipInfo.username}@${this.sipInfo.domain}`),\n      transportOptions: {\n        server: transportServer,\n        traceSip: true,\n        connectionTimeout: 5,\n        keepAliveDebounce: options.keepAliveDebounce,\n        keepAliveInterval: options.keepAliveInterval,\n      },\n      // WebPhoneTransport will handle reconnection.\n      reconnectionAttempts: 0,\n      authorizationUsername: this.sipInfo.authorizationId,\n      authorizationPassword: this.sipInfo.password,\n      logLevel: (LogLevels[options.logLevel!] as unknown as LogLevel) || defaultLogLevel,\n      logBuiltinEnabled: options.builtinEnabled,\n      logConnector: options.connector || undefined,\n      userAgentString,\n      sessionDescriptionHandlerFactoryOptions,\n      sessionDescriptionHandlerFactory,\n      allowLegacyNotifications: true,\n    };\n\n    options.sipErrorCodes = sipErrorCodes;\n    options.switchBackInterval = this.sipInfo.switchBackInterval;\n    this.userAgent = createWebPhoneUserAgent(configuration, this.sipInfo, options, id!);\n  }\n}\n","/**\n * Log levels.\n * @public\n */\nexport var Levels;\n(function (Levels) {\n    Levels[Levels[\"error\"] = 0] = \"error\";\n    Levels[Levels[\"warn\"] = 1] = \"warn\";\n    Levels[Levels[\"log\"] = 2] = \"log\";\n    Levels[Levels[\"debug\"] = 3] = \"debug\";\n})(Levels = Levels || (Levels = {}));\n","export * from \"./modifiers/index.js\";\nexport * from \"./session-description-handler/index.js\";\nexport * from \"./session-manager/index.js\";\nexport * from \"./simple-user/index.js\";\nexport * from \"./transport/index.js\";\n","/**\n * SessionDescriptionHandlerModifer functions for web browsers.\n * @packageDocumentation\n */\nexport * from \"./modifiers.js\";\n","const stripPayload = (sdp, payload) => {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const mediaDescs = [];\n    const lines = sdp.split(/\\r\\n/);\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    let currentMediaDesc;\n    for (let i = 0; i < lines.length;) {\n        const line = lines[i];\n        if (/^m=(?:audio|video)/.test(line)) {\n            currentMediaDesc = {\n                index: i,\n                stripped: []\n            };\n            mediaDescs.push(currentMediaDesc);\n        }\n        else if (currentMediaDesc) {\n            const rtpmap = /^a=rtpmap:(\\d+) ([^/]+)\\//.exec(line);\n            if (rtpmap && payload === rtpmap[2]) {\n                lines.splice(i, 1);\n                currentMediaDesc.stripped.push(rtpmap[1]);\n                continue; // Don't increment 'i'\n            }\n        }\n        i++;\n    }\n    for (const mediaDesc of mediaDescs) {\n        const mline = lines[mediaDesc.index].split(\" \");\n        // Ignore the first 3 parameters of the mline. The codec information is after that\n        for (let j = 3; j < mline.length;) {\n            if (mediaDesc.stripped.indexOf(mline[j]) !== -1) {\n                mline.splice(j, 1);\n                continue;\n            }\n            j++;\n        }\n        lines[mediaDesc.index] = mline.join(\" \");\n    }\n    return lines.join(\"\\r\\n\");\n};\nconst stripMediaDescription = (sdp, description) => {\n    const descriptionRegExp = new RegExp(\"m=\" + description + \".*$\", \"gm\");\n    const groupRegExp = new RegExp(\"^a=group:.*$\", \"gm\");\n    if (descriptionRegExp.test(sdp)) {\n        let midLineToRemove;\n        sdp = sdp.split(/^m=/gm).filter((section) => {\n            if (section.substr(0, description.length) === description) {\n                midLineToRemove = section.match(/^a=mid:.*$/gm);\n                if (midLineToRemove) {\n                    const step = midLineToRemove[0].match(/:.+$/g);\n                    if (step) {\n                        midLineToRemove = step[0].substr(1);\n                    }\n                }\n                return false;\n            }\n            return true;\n        }).join(\"m=\");\n        const groupLine = sdp.match(groupRegExp);\n        if (groupLine && groupLine.length === 1) {\n            let groupLinePortion = groupLine[0];\n            // eslint-disable-next-line no-useless-escape\n            const groupRegExpReplace = new RegExp(\"\\ *\" + midLineToRemove + \"[^\\ ]*\", \"g\");\n            groupLinePortion = groupLinePortion.replace(groupRegExpReplace, \"\");\n            sdp = sdp.split(groupRegExp).join(groupLinePortion);\n        }\n    }\n    return sdp;\n};\n/**\n * Modifier.\n * @public\n */\nexport function stripTcpCandidates(description) {\n    description.sdp = (description.sdp || \"\").replace(/^a=candidate:\\d+ \\d+ tcp .*?\\r\\n/img, \"\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripTelephoneEvent(description) {\n    description.sdp = stripPayload(description.sdp || \"\", \"telephone-event\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function cleanJitsiSdpImageattr(description) {\n    description.sdp = (description.sdp || \"\").replace(/^(a=imageattr:.*?)(x|y)=\\[0-/gm, \"$1$2=[1:\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripG722(description) {\n    description.sdp = stripPayload(description.sdp || \"\", \"G722\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripRtpPayload(payload) {\n    return (description) => {\n        description.sdp = stripPayload(description.sdp || \"\", payload);\n        return Promise.resolve(description);\n    };\n}\n/**\n * Modifier.\n * @public\n */\nexport function stripVideo(description) {\n    description.sdp = stripMediaDescription(description.sdp || \"\", \"video\");\n    return Promise.resolve(description);\n}\n/**\n * Modifier.\n * @public\n */\nexport function addMidLines(description) {\n    let sdp = description.sdp || \"\";\n    if (sdp.search(/^a=mid.*$/gm) === -1) {\n        const mlines = sdp.match(/^m=.*$/gm);\n        const sdpArray = sdp.split(/^m=.*$/gm);\n        if (mlines) {\n            mlines.forEach((elem, idx) => {\n                mlines[idx] = elem + \"\\na=mid:\" + idx;\n            });\n        }\n        sdpArray.forEach((elem, idx) => {\n            if (mlines && mlines[idx]) {\n                sdpArray[idx] = elem + mlines[idx];\n            }\n        });\n        sdp = sdpArray.join(\"\");\n        description.sdp = sdp;\n    }\n    return Promise.resolve(description);\n}\n/**\n * The modifier that should be used when the session would like to place the call on hold.\n * @param description - The description that will be modified.\n */\nexport function holdModifier(description) {\n    if (!description.sdp || !description.type) {\n        throw new Error(\"Invalid SDP\");\n    }\n    let sdp = description.sdp;\n    const type = description.type;\n    if (sdp) {\n        if (!/a=(sendrecv|sendonly|recvonly|inactive)/.test(sdp)) {\n            sdp = sdp.replace(/(m=[^\\r]*\\r\\n)/g, \"$1a=sendonly\\r\\n\");\n        }\n        else {\n            sdp = sdp.replace(/a=sendrecv\\r\\n/g, \"a=sendonly\\r\\n\");\n            sdp = sdp.replace(/a=recvonly\\r\\n/g, \"a=inactive\\r\\n\");\n        }\n    }\n    return Promise.resolve({ sdp, type });\n}\n","/**\n * A SessionDescriptionHandler for web browsers.\n * @packageDocumentation\n */\nexport * from \"./media-stream-factory-default.js\";\nexport * from \"./media-stream-factory.js\";\nexport * from \"./peer-connection-configuration-default.js\";\nexport * from \"./peer-connection-delegate.js\";\nexport * from \"./session-description-handler-configuration.js\";\nexport * from \"./session-description-handler-factory-default.js\";\nexport * from \"./session-description-handler-factory-options.js\";\nexport * from \"./session-description-handler-factory.js\";\nexport * from \"./session-description-handler-options.js\";\nexport * from \"./session-description-handler.js\";\nexport * from \"./web-audio-session-description-handler.js\";\n","/**\n * Function which returns a MediaStreamFactory.\n * @public\n */\nexport function defaultMediaStreamFactory() {\n    return (constraints) => {\n        // if no audio or video, return a media stream without tracks\n        if (!constraints.audio && !constraints.video) {\n            return Promise.resolve(new MediaStream());\n        }\n        // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n        // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n        // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n        // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n        if (navigator.mediaDevices === undefined) {\n            return Promise.reject(new Error(\"Media devices not available in insecure contexts.\"));\n        }\n        return navigator.mediaDevices.getUserMedia.call(navigator.mediaDevices, constraints);\n    };\n}\n","export {};\n","/**\n * Function which returns an RTCConfiguration.\n * @public\n */\nexport function defaultPeerConnectionConfiguration() {\n    const configuration = {\n        bundlePolicy: \"balanced\",\n        certificates: undefined,\n        iceCandidatePoolSize: 0,\n        iceServers: [{ urls: \"stun:stun.l.google.com:19302\" }],\n        iceTransportPolicy: \"all\",\n        rtcpMuxPolicy: \"require\"\n    };\n    return configuration;\n}\n","export {};\n","export {};\n","import { defaultMediaStreamFactory } from \"./media-stream-factory-default.js\";\nimport { defaultPeerConnectionConfiguration } from \"./peer-connection-configuration-default.js\";\nimport { SessionDescriptionHandler } from \"./session-description-handler.js\";\n/**\n * Function which returns a SessionDescriptionHandlerFactory.\n * @remarks\n * See {@link defaultPeerConnectionConfiguration} for the default peer connection configuration.\n * The ICE gathering timeout defaults to 5000ms.\n * @param mediaStreamFactory - MediaStream factory.\n * @public\n */\nexport function defaultSessionDescriptionHandlerFactory(mediaStreamFactory) {\n    return (session, options) => {\n        // provide a default media stream factory if need be\n        if (mediaStreamFactory === undefined) {\n            mediaStreamFactory = defaultMediaStreamFactory();\n        }\n        // make sure we allow `0` to be passed in so timeout can be disabled\n        const iceGatheringTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) !== undefined ? options === null || options === void 0 ? void 0 : options.iceGatheringTimeout : 5000;\n        // merge passed factory options into default session description configuration\n        const sessionDescriptionHandlerConfiguration = {\n            iceGatheringTimeout,\n            peerConnectionConfiguration: Object.assign(Object.assign({}, defaultPeerConnectionConfiguration()), options === null || options === void 0 ? void 0 : options.peerConnectionConfiguration)\n        };\n        const logger = session.userAgent.getLogger(\"sip.SessionDescriptionHandler\");\n        return new SessionDescriptionHandler(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n    };\n}\n","/**\n * A base class implementing a WebRTC session description handler for sip.js.\n * @remarks\n * It is expected/intended to be extended by specific WebRTC based applications.\n * @privateRemarks\n * So do not put application specific implementation in here.\n * @public\n */\nexport class SessionDescriptionHandler {\n    /**\n     * Constructor\n     * @param logger - A logger\n     * @param mediaStreamFactory - A factory to provide a MediaStream\n     * @param options - Options passed from the SessionDescriptionHandleFactory\n     */\n    constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration) {\n        logger.debug(\"SessionDescriptionHandler.constructor\");\n        this.logger = logger;\n        this.mediaStreamFactory = mediaStreamFactory;\n        this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n        this._localMediaStream = new MediaStream();\n        this._remoteMediaStream = new MediaStream();\n        this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration === null || sessionDescriptionHandlerConfiguration === void 0 ? void 0 : sessionDescriptionHandlerConfiguration.peerConnectionConfiguration);\n        this.initPeerConnectionEventHandlers();\n    }\n    /**\n     * The local media stream currently being sent.\n     *\n     * @remarks\n     * The local media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * local media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */\n    get localMediaStream() {\n        return this._localMediaStream;\n    }\n    /**\n     * The remote media stream currently being received.\n     *\n     * @remarks\n     * The remote media stream initially has no tracks, so the presence of tracks\n     * should not be assumed. Furthermore, tracks may be added or removed if the\n     * remote media changes - for example, on upgrade from audio only to a video session.\n     * At any given time there will be at most one audio track and one video track\n     * (it's possible that this restriction may not apply to sub-classes).\n     * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n     * to detect when a new track becomes available:\n     * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n     */\n    get remoteMediaStream() {\n        return this._remoteMediaStream;\n    }\n    /**\n     * The data channel. Undefined before it is created.\n     */\n    get dataChannel() {\n        return this._dataChannel;\n    }\n    /**\n     * The peer connection. Undefined if peer connection has closed.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```ts\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * While access to the underlying `RTCPeerConnection` is provided, note that\n     * using methods which modify it may break the operation of this class.\n     * In particular, this class depends on exclusive access to the\n     * event handler properties. If you need access to the peer connection\n     * events, either register for events using `addEventListener()` on\n     * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n     * this `SessionDescriptionHandler`.\n     */\n    get peerConnection() {\n        return this._peerConnection;\n    }\n    /**\n     * A delegate which provides access to the peer connection event handlers.\n     *\n     * @remarks\n     * Use the peerConnectionDelegate to get access to the events associated\n     * with the RTCPeerConnection. For example...\n     *\n     * Do NOT do this...\n     * ```ts\n     * peerConnection.onicecandidate = (event) => {\n     *   // do something\n     * };\n     * ```\n     * Instead, do this...\n     * ```\n     * peerConnection.peerConnectionDelegate = {\n     *   onicecandidate: (event) => {\n     *     // do something\n     *   }\n     * };\n     * ```\n     * Setting the peer connection event handlers directly is not supported\n     * and may break this class. As this class depends on exclusive access\n     * to them. This delegate is intended to provide access to the\n     * RTCPeerConnection events in a fashion which is supported.\n     */\n    get peerConnectionDelegate() {\n        return this._peerConnectionDelegate;\n    }\n    set peerConnectionDelegate(delegate) {\n        this._peerConnectionDelegate = delegate;\n    }\n    // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n    static dispatchAddTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"addtrack\", { track }));\n    }\n    // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n    static dispatchRemoveTrackEvent(stream, track) {\n        stream.dispatchEvent(new MediaStreamTrackEvent(\"removetrack\", { track }));\n    }\n    /**\n     * Stop tracks and close peer connection.\n     */\n    close() {\n        this.logger.debug(\"SessionDescriptionHandler.close\");\n        if (this._peerConnection === undefined) {\n            return;\n        }\n        this._peerConnection.getReceivers().forEach((receiver) => {\n            receiver.track && receiver.track.stop();\n        });\n        this._peerConnection.getSenders().forEach((sender) => {\n            sender.track && sender.track.stop();\n        });\n        if (this._dataChannel) {\n            this._dataChannel.close();\n        }\n        this._peerConnection.close();\n        this._peerConnection = undefined;\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */\n    enableReceiverTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) {\n            throw new Error(\"Peer connection closed.\");\n        }\n        peerConnection.getReceivers().forEach((receiver) => {\n            if (receiver.track) {\n                receiver.track.enabled = enable;\n            }\n        });\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks, otherwise disable tracks.\n     */\n    enableSenderTracks(enable) {\n        const peerConnection = this.peerConnection;\n        if (!peerConnection) {\n            throw new Error(\"Peer connection closed.\");\n        }\n        peerConnection.getSenders().forEach((sender) => {\n            if (sender.track) {\n                sender.track.enabled = enable;\n            }\n        });\n    }\n    /**\n     * Creates an offer or answer.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */\n    getDescription(options, modifiers) {\n        var _a, _b;\n        this.logger.debug(\"SessionDescriptionHandler.getDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // ICE will restart upon applying an offer created with the iceRestart option\n        const iceRestart = (_a = options === null || options === void 0 ? void 0 : options.offerOptions) === null || _a === void 0 ? void 0 : _a.iceRestart;\n        // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n        const iceTimeout = (options === null || options === void 0 ? void 0 : options.iceGatheringTimeout) === undefined\n            ? (_b = this.sessionDescriptionHandlerConfiguration) === null || _b === void 0 ? void 0 : _b.iceGatheringTimeout\n            : options === null || options === void 0 ? void 0 : options.iceGatheringTimeout;\n        return this.getLocalMediaStream(options)\n            .then(() => this.updateDirection(options))\n            .then(() => this.createDataChannel(options))\n            .then(() => this.createLocalOfferOrAnswer(options))\n            .then((sessionDescription) => this.applyModifiers(sessionDescription, modifiers))\n            .then((sessionDescription) => this.setLocalSessionDescription(sessionDescription))\n            .then(() => this.waitForIceGatheringComplete(iceRestart, iceTimeout))\n            .then(() => this.getLocalSessionDescription())\n            .then((sessionDescription) => {\n            return {\n                body: sessionDescription.sdp,\n                contentType: \"application/sdp\"\n            };\n        })\n            .catch((error) => {\n            this.logger.error(\"SessionDescriptionHandler.getDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n     * @param contentType - The content type that is in the SIP Message.\n     */\n    hasDescription(contentType) {\n        this.logger.debug(\"SessionDescriptionHandler.hasDescription\");\n        return contentType === \"application/sdp\";\n    }\n    /**\n     * Called when ICE gathering completes and resolves any waiting promise.\n     * @remarks\n     * May be called prior to ICE gathering actually completing to allow the\n     * session descirption handler proceed with whatever candidates have been\n     * gathered up to this point in time. Use this to stop waiting on ICE to\n     * complete if you are implementing your own ICE gathering completion strategy.\n     */\n    iceGatheringComplete() {\n        this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete\");\n        // clear timer if need be\n        if (this.iceGatheringCompleteTimeoutId !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - clearing timeout\");\n            clearTimeout(this.iceGatheringCompleteTimeoutId);\n            this.iceGatheringCompleteTimeoutId = undefined;\n        }\n        // resolve and cleanup promise if need be\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.iceGatheringComplete - resolving promise\");\n            this.iceGatheringCompleteResolve && this.iceGatheringCompleteResolve();\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n    }\n    /**\n     * Send DTMF via RTP (RFC 4733).\n     * Returns true if DTMF send is successful, false otherwise.\n     * @param tones - A string containing DTMF digits.\n     * @param options - Options object to be used by sendDtmf.\n     */\n    sendDtmf(tones, options) {\n        this.logger.debug(\"SessionDescriptionHandler.sendDtmf\");\n        if (this._peerConnection === undefined) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - peer connection closed\");\n            return false;\n        }\n        const senders = this._peerConnection.getSenders();\n        if (senders.length === 0) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no senders\");\n            return false;\n        }\n        const dtmfSender = senders[0].dtmf;\n        if (!dtmfSender) {\n            this.logger.error(\"SessionDescriptionHandler.sendDtmf failed - no DTMF sender\");\n            return false;\n        }\n        const duration = options === null || options === void 0 ? void 0 : options.duration;\n        const interToneGap = options === null || options === void 0 ? void 0 : options.interToneGap;\n        try {\n            dtmfSender.insertDTMF(tones, duration, interToneGap);\n        }\n        catch (e) {\n            this.logger.error(e.toString());\n            return false;\n        }\n        this.logger.log(\"SessionDescriptionHandler.sendDtmf sent via RTP: \" + tones.toString());\n        return true;\n    }\n    /**\n     * Sets an offer or answer.\n     * @param sdp - The session description.\n     * @param options - Options bucket.\n     * @param modifiers - Modifiers.\n     */\n    setDescription(sdp, options, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.setDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // Callback on data channel creation\n        this.onDataChannel = options === null || options === void 0 ? void 0 : options.onDataChannel;\n        // SDP type\n        const type = this._peerConnection.signalingState === \"have-local-offer\" ? \"answer\" : \"offer\";\n        return this.getLocalMediaStream(options)\n            .then(() => this.applyModifiers({ sdp, type }, modifiers))\n            .then((sessionDescription) => this.setRemoteSessionDescription(sessionDescription))\n            .catch((error) => {\n            this.logger.error(\"SessionDescriptionHandler.setDescription failed - \" + error);\n            throw error;\n        });\n    }\n    /**\n     * Applies modifiers to SDP prior to setting the local or remote description.\n     * @param sdp - SDP to modify.\n     * @param modifiers - Modifiers to apply.\n     */\n    applyModifiers(sdp, modifiers) {\n        this.logger.debug(\"SessionDescriptionHandler.applyModifiers\");\n        if (!modifiers || modifiers.length === 0) {\n            return Promise.resolve(sdp);\n        }\n        return modifiers\n            .reduce((cur, next) => cur.then(next), Promise.resolve(sdp))\n            .then((modified) => {\n            this.logger.debug(\"SessionDescriptionHandler.applyModifiers - modified sdp\");\n            if (!modified.sdp || !modified.type) {\n                throw new Error(\"Invalid SDP.\");\n            }\n            return { sdp: modified.sdp, type: modified.type };\n        });\n    }\n    /**\n     * Create a data channel.\n     * @remarks\n     * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n     * Only creates a data channel if creating a local offer.\n     * Only if one does not already exist.\n     * @param options - Session description handler options.\n     */\n    createDataChannel(options) {\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // only create a data channel if requested\n        if ((options === null || options === void 0 ? void 0 : options.dataChannel) !== true) {\n            return Promise.resolve();\n        }\n        // do not create a data channel if we already have one\n        if (this._dataChannel) {\n            return Promise.resolve();\n        }\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer so create a data channel\n                this.logger.debug(\"SessionDescriptionHandler.createDataChannel - creating data channel\");\n                try {\n                    this._dataChannel = this._peerConnection.createDataChannel((options === null || options === void 0 ? void 0 : options.dataChannelLabel) || \"\", options === null || options === void 0 ? void 0 : options.dataChannelOptions);\n                    if (this.onDataChannel) {\n                        this.onDataChannel(this._dataChannel);\n                    }\n                    return Promise.resolve();\n                }\n                catch (error) {\n                    return Promise.reject(error);\n                }\n            case \"have-remote-offer\":\n                return Promise.resolve();\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Depending on current signaling state, create a local offer or answer.\n     * @param options - Session description handler options.\n     */\n    createLocalOfferOrAnswer(options) {\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer\");\n                return this._peerConnection.createOffer(options === null || options === void 0 ? void 0 : options.offerOptions);\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer\");\n                return this._peerConnection.createAnswer(options === null || options === void 0 ? void 0 : options.answerOptions);\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n    }\n    /**\n     * Get a media stream from the media stream factory and set the local media stream.\n     * @param options - Session description handler options.\n     */\n    getLocalMediaStream(options) {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalMediaStream\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        let constraints = Object.assign({}, options === null || options === void 0 ? void 0 : options.constraints);\n        // if we already have a local media stream...\n        if (this.localMediaStreamConstraints) {\n            // ignore constraint \"downgrades\"\n            constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n            constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n            // if constraints have not changed, do not get a new media stream\n            if (JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) &&\n                JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)) {\n                return Promise.resolve();\n            }\n        }\n        else {\n            // if no constraints have been specified, default to audio for initial media stream\n            if (constraints.audio === undefined && constraints.video === undefined) {\n                constraints = { audio: true };\n            }\n        }\n        this.localMediaStreamConstraints = constraints;\n        return this.mediaStreamFactory(constraints, this, options).then((mediaStream) => this.setLocalMediaStream(mediaStream));\n    }\n    /**\n     * Sets the peer connection's sender tracks and local media stream tracks.\n     *\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param stream - Media stream containing tracks to be utilized.\n     */\n    setLocalMediaStream(stream) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalMediaStream\");\n        if (!this._peerConnection) {\n            throw new Error(\"Peer connection undefined.\");\n        }\n        const pc = this._peerConnection;\n        const localStream = this._localMediaStream;\n        const trackUpdates = [];\n        const updateTrack = (newTrack) => {\n            const kind = newTrack.kind;\n            if (kind !== \"audio\" && kind !== \"video\") {\n                throw new Error(`Unknown new track kind ${kind}.`);\n            }\n            const sender = pc.getSenders().find((sender) => sender.track && sender.track.kind === kind);\n            if (sender) {\n                trackUpdates.push(new Promise((resolve) => {\n                    this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n                    resolve();\n                }).then(() => sender\n                    .replaceTrack(newTrack)\n                    .then(() => {\n                    const oldTrack = localStream.getTracks().find((localTrack) => localTrack.kind === kind);\n                    if (oldTrack) {\n                        oldTrack.stop();\n                        localStream.removeTrack(oldTrack);\n                        SessionDescriptionHandler.dispatchRemoveTrackEvent(localStream, oldTrack);\n                    }\n                    localStream.addTrack(newTrack);\n                    SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n                })\n                    .catch((error) => {\n                    this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`);\n                    throw error;\n                })));\n            }\n            else {\n                trackUpdates.push(new Promise((resolve) => {\n                    this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n                    resolve();\n                }).then(() => {\n                    // Review: could make streamless tracks a configurable option?\n                    // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n                    try {\n                        pc.addTrack(newTrack, localStream);\n                    }\n                    catch (error) {\n                        this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n                        throw error;\n                    }\n                    localStream.addTrack(newTrack);\n                    SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n                }));\n            }\n        };\n        // update peer connection audio tracks\n        const audioTracks = stream.getAudioTracks();\n        if (audioTracks.length) {\n            updateTrack(audioTracks[0]);\n        }\n        // update peer connection video tracks\n        const videoTracks = stream.getVideoTracks();\n        if (videoTracks.length) {\n            updateTrack(videoTracks[0]);\n        }\n        return trackUpdates.reduce((p, x) => p.then(() => x), Promise.resolve());\n    }\n    /**\n     * Gets the peer connection's local session description.\n     */\n    getLocalSessionDescription() {\n        this.logger.debug(\"SessionDescriptionHandler.getLocalSessionDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        const sdp = this._peerConnection.localDescription;\n        if (!sdp) {\n            return Promise.reject(new Error(\"Failed to get local session description\"));\n        }\n        return Promise.resolve(sdp);\n    }\n    /**\n     * Sets the peer connection's local session description.\n     * @param sessionDescription - sessionDescription The session description.\n     */\n    setLocalSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setLocalSessionDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        return this._peerConnection.setLocalDescription(sessionDescription);\n    }\n    /**\n     * Sets the peer connection's remote session description.\n     * @param sessionDescription - The session description.\n     */\n    setRemoteSessionDescription(sessionDescription) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteSessionDescription\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        const sdp = sessionDescription.sdp;\n        let type;\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable assume this is a remote offer\n                type = \"offer\";\n                break;\n            case \"have-local-offer\":\n                // if we made an offer, assume this is a remote answer\n                type = \"answer\";\n                break;\n            case \"have-local-pranswer\":\n            case \"have-remote-offer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        if (!sdp) {\n            this.logger.error(\"SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp\");\n            return Promise.reject(new Error(\"SDP is undefined\"));\n        }\n        return this._peerConnection.setRemoteDescription({ sdp, type });\n    }\n    /**\n     * Sets a remote media stream track.\n     *\n     * @remarks\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     *\n     * @param track - Media stream track to be utilized.\n     */\n    setRemoteTrack(track) {\n        this.logger.debug(\"SessionDescriptionHandler.setRemoteTrack\");\n        const remoteStream = this._remoteMediaStream;\n        if (remoteStream.getTrackById(track.id)) {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n        }\n        else if (track.kind === \"audio\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getAudioTracks().forEach((track) => {\n                track.stop();\n                remoteStream.removeTrack(track);\n                SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n        }\n        else if (track.kind === \"video\") {\n            this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n            remoteStream.getVideoTracks().forEach((track) => {\n                track.stop();\n                remoteStream.removeTrack(track);\n                SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n            });\n            remoteStream.addTrack(track);\n            SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n        }\n    }\n    /**\n     * Depending on the current signaling state and the session hold state, update transceiver direction.\n     * @param options - Session description handler options.\n     */\n    updateDirection(options) {\n        if (this._peerConnection === undefined) {\n            return Promise.reject(new Error(\"Peer connection closed.\"));\n        }\n        // 4.2.3.  setDirection\n        //\n        //    The setDirection method sets the direction of a transceiver, which\n        //    affects the direction property of the associated \"m=\" section on\n        //    future calls to createOffer and createAnswer.  The permitted values\n        //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n        //    mirroring the identically named direction attributes defined in\n        //    [RFC4566], Section 6.\n        //\n        //    When creating offers, the transceiver direction is directly reflected\n        //    in the output, even for re-offers.  When creating answers, the\n        //    transceiver direction is intersected with the offered direction, as\n        //    explained in Section 5.3 below.\n        //\n        //    Note that while setDirection sets the direction property of the\n        //    transceiver immediately (Section 4.2.4), this property does not\n        //    immediately affect whether the transceiver's RtpSender will send or\n        //    its RtpReceiver will receive.  The direction in effect is represented\n        //    by the currentDirection property, which is only updated when an\n        //    answer is applied.\n        //\n        // 4.2.4.  direction\n        //\n        //    The direction property indicates the last value passed into\n        //    setDirection.  If setDirection has never been called, it is set to\n        //    the direction the transceiver was initialized with.\n        //\n        // 4.2.5.  currentDirection\n        //\n        //    The currentDirection property indicates the last negotiated direction\n        //    for the transceiver's associated \"m=\" section.  More specifically, it\n        //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n        //    section in the last applied answer (including provisional answers),\n        //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n        //    For example, if the direction attribute for the associated \"m=\"\n        //    section in a remote answer is \"recvonly\", currentDirection is set to\n        //    \"sendonly\".\n        //\n        //    If an answer that references this transceiver has not yet been\n        //    applied or if the transceiver is stopped, currentDirection is set to\n        //    \"null\".\n        //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n        //\n        // *  A direction attribute, determined by applying the rules regarding\n        //    the offered direction specified in [RFC3264], Section 6.1, and\n        //    then intersecting with the direction of the associated\n        //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n        //    offered as \"sendonly\" and the local transceiver is set to\n        //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n        // https://tools.ietf.org/html/rfc8829#section-5.3.1\n        //\n        // If a stream is offered as sendonly, the corresponding stream MUST be\n        // marked as recvonly or inactive in the answer.  If a media stream is\n        // listed as recvonly in the offer, the answer MUST be marked as\n        // sendonly or inactive in the answer.  If an offered media stream is\n        // listed as sendrecv (or if there is no direction attribute at the\n        // media or session level, in which case the stream is sendrecv by\n        // default), the corresponding stream in the answer MAY be marked as\n        // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n        // stream is listed as inactive, it MUST be marked as inactive in the\n        // answer.\n        // https://tools.ietf.org/html/rfc3264#section-6.1\n        switch (this._peerConnection.signalingState) {\n            case \"stable\":\n                // if we are stable, assume we are creating a local offer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting offer direction\");\n                {\n                    // determine the direction to offer given the current direction and hold state\n                    const directionToOffer = (currentDirection) => {\n                        switch (currentDirection) {\n                            case \"inactive\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"recvonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            case \"stopped\":\n                                return \"stopped\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    };\n                    // set the transceiver direction to the offer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver) => {\n                        if (transceiver.direction /* guarding, but should always be true */) {\n                            const offerDirection = directionToOffer(transceiver.direction);\n                            if (transceiver.direction !== offerDirection) {\n                                transceiver.direction = offerDirection;\n                            }\n                        }\n                    });\n                }\n                break;\n            case \"have-remote-offer\":\n                // if we have a remote offer, assume we are creating a local answer\n                this.logger.debug(\"SessionDescriptionHandler.updateDirection - setting answer direction\");\n                // FIXME: This is not the correct way to determine the answer direction as it is only\n                // considering first match in the offered SDP and using that to determine the answer direction.\n                // While that may be fine for our current use cases, it is not a generally correct approach.\n                {\n                    // determine the offered direction\n                    const offeredDirection = (() => {\n                        const description = this._peerConnection.remoteDescription;\n                        if (!description) {\n                            throw new Error(\"Failed to read remote offer\");\n                        }\n                        const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n                        if (searchResult) {\n                            switch (searchResult[0]) {\n                                case \"a=inactive\\r\\n\":\n                                    return \"inactive\";\n                                case \"a=recvonly\\r\\n\":\n                                    return \"recvonly\";\n                                case \"a=sendonly\\r\\n\":\n                                    return \"sendonly\";\n                                case \"a=sendrecv\\r\\n\":\n                                    return \"sendrecv\";\n                                default:\n                                    throw new Error(\"Should never happen\");\n                            }\n                        }\n                        return \"sendrecv\";\n                    })();\n                    // determine the answer direction based on the offered direction and our hold state\n                    const answerDirection = (() => {\n                        switch (offeredDirection) {\n                            case \"inactive\":\n                                return \"inactive\";\n                            case \"recvonly\":\n                                return \"sendonly\";\n                            case \"sendonly\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"inactive\" : \"recvonly\";\n                            case \"sendrecv\":\n                                return (options === null || options === void 0 ? void 0 : options.hold) ? \"sendonly\" : \"sendrecv\";\n                            default:\n                                throw new Error(\"Should never happen\");\n                        }\n                    })();\n                    // set the transceiver direction to the answer direction\n                    this._peerConnection.getTransceivers().forEach((transceiver) => {\n                        if (transceiver.direction /* guarding, but should always be true */) {\n                            if (transceiver.direction !== \"stopped\" && transceiver.direction !== answerDirection) {\n                                transceiver.direction = answerDirection;\n                            }\n                        }\n                    });\n                }\n                break;\n            case \"have-local-offer\":\n            case \"have-local-pranswer\":\n            case \"have-remote-pranswer\":\n            case \"closed\":\n            default:\n                return Promise.reject(new Error(\"Invalid signaling state \" + this._peerConnection.signalingState));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Wait for ICE gathering to complete.\n     * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n     * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n     */\n    waitForIceGatheringComplete(restart = false, timeout = 0) {\n        this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete\");\n        if (this._peerConnection === undefined) {\n            return Promise.reject(\"Peer connection closed.\");\n        }\n        // guard already complete\n        if (!restart && this._peerConnection.iceGatheringState === \"complete\") {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - already complete\");\n            return Promise.resolve();\n        }\n        // only one may be waiting, reject any prior\n        if (this.iceGatheringCompletePromise !== undefined) {\n            this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise\");\n            this.iceGatheringCompleteReject && this.iceGatheringCompleteReject(new Error(\"Promise superseded.\"));\n            this.iceGatheringCompletePromise = undefined;\n            this.iceGatheringCompleteResolve = undefined;\n            this.iceGatheringCompleteReject = undefined;\n        }\n        this.iceGatheringCompletePromise = new Promise((resolve, reject) => {\n            this.iceGatheringCompleteResolve = resolve;\n            this.iceGatheringCompleteReject = reject;\n            if (timeout > 0) {\n                this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in \" + timeout);\n                this.iceGatheringCompleteTimeoutId = setTimeout(() => {\n                    this.logger.debug(\"SessionDescriptionHandler.waitForIceGatheringToComplete - timeout\");\n                    this.iceGatheringComplete();\n                }, timeout);\n            }\n        });\n        return this.iceGatheringCompletePromise;\n    }\n    /**\n     * Initializes the peer connection event handlers\n     */\n    initPeerConnectionEventHandlers() {\n        this.logger.debug(\"SessionDescriptionHandler.initPeerConnectionEventHandlers\");\n        if (!this._peerConnection)\n            throw new Error(\"Peer connection undefined.\");\n        const peerConnection = this._peerConnection;\n        peerConnection.onconnectionstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.connectionState;\n            this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onconnectionstatechange) {\n                this._peerConnectionDelegate.onconnectionstatechange(event);\n            }\n        };\n        peerConnection.ondatachannel = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.ondatachannel`);\n            this._dataChannel = event.channel;\n            if (this.onDataChannel) {\n                this.onDataChannel(this._dataChannel);\n            }\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ondatachannel) {\n                this._peerConnectionDelegate.ondatachannel(event);\n            }\n        };\n        peerConnection.onicecandidate = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidate`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidate) {\n                this._peerConnectionDelegate.onicecandidate(event);\n            }\n        };\n        peerConnection.onicecandidateerror = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onicecandidateerror`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicecandidateerror) {\n                this._peerConnectionDelegate.onicecandidateerror(event);\n            }\n        };\n        peerConnection.oniceconnectionstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.iceConnectionState;\n            this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.oniceconnectionstatechange) {\n                this._peerConnectionDelegate.oniceconnectionstatechange(event);\n            }\n        };\n        peerConnection.onicegatheringstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.iceGatheringState;\n            this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n            if (newState === \"complete\") {\n                this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n            }\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onicegatheringstatechange) {\n                this._peerConnectionDelegate.onicegatheringstatechange(event);\n            }\n        };\n        peerConnection.onnegotiationneeded = (event) => {\n            var _a;\n            this.logger.debug(`SessionDescriptionHandler.onnegotiationneeded`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onnegotiationneeded) {\n                this._peerConnectionDelegate.onnegotiationneeded(event);\n            }\n        };\n        peerConnection.onsignalingstatechange = (event) => {\n            var _a;\n            const newState = peerConnection.signalingState;\n            this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.onsignalingstatechange) {\n                this._peerConnectionDelegate.onsignalingstatechange(event);\n            }\n        };\n        peerConnection.ontrack = (event) => {\n            var _a;\n            const kind = event.track.kind;\n            const enabled = event.track.enabled ? \"enabled\" : \"disabled\";\n            this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n            this.setRemoteTrack(event.track);\n            if ((_a = this._peerConnectionDelegate) === null || _a === void 0 ? void 0 : _a.ontrack) {\n                this._peerConnectionDelegate.ontrack(event);\n            }\n        };\n    }\n}\n","export {};\n","export {};\n","export {};\n","import { SessionDescriptionHandler } from \"./session-description-handler.js\";\n/**\n * Start a conference.\n * @param conferenceSessions - The sessions to conference.\n *\n * @beta\n */\nexport function startLocalConference(conferenceSessions) {\n    if (conferenceSessions.length < 2) {\n        throw new Error(\"Start local conference requires at leaast 2 sessions.\");\n    }\n    // Return all possible pairs of elements in an array.\n    const pairs = (arr) => arr.map((v, i) => arr.slice(i + 1).map((w) => [v, w])).reduce((acc, curVal) => acc.concat(curVal), []);\n    // For each pair of sessions making up the conference, join their media together.\n    // A session desciprion handler manages the media, streams and tracks for a session.\n    pairs(conferenceSessions.map((session) => session.sessionDescriptionHandler)).forEach(([sdh0, sdh1]) => {\n        if (!(sdh0 instanceof WebAudioSessionDescriptionHandler && sdh1 instanceof WebAudioSessionDescriptionHandler)) {\n            throw new Error(\"Session description handler not instance of SessionManagerSessionDescriptionHandler\");\n        }\n        sdh0.joinWith(sdh1);\n    });\n}\n/**\n * A WebAudioSessionDescriptionHandler uses the Web Audio API to enable local conferencing of audio streams.\n * @remarks\n * This handler only works for one track of audio per peer connection. While the session description handler\n * being extended supports both audio and video, attempting to utilize video with this handler is not defined.\n *\n * @beta\n */\nexport class WebAudioSessionDescriptionHandler extends SessionDescriptionHandler {\n    constructor(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration) {\n        super(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            WebAudioSessionDescriptionHandler.audioContext = new AudioContext();\n        }\n    }\n    /**\n     * Helper function to enable/disable media tracks.\n     * @param enable - If true enable tracks.\n     */\n    enableSenderTracks(enable) {\n        // This session decription handler is not using the original outbound (local) media stream source\n        // and has instead inserted a Web Audio proxy media stream to allow conferencing and mixing of stream.\n        // So here, we only want to mute the original source and not the proxy as it may be mixing other\n        // sources into the outbound stream and we do not want to enable/disable those. We only want to\n        // enable/disable the original stream source so that it's media gets muted/unmuted going to the proxy.\n        const stream = this.localMediaStreamReal;\n        if (stream === undefined) {\n            throw new Error(\"Stream undefined.\");\n        }\n        stream.getAudioTracks().forEach((track) => {\n            track.enabled = enable;\n        });\n    }\n    /**\n     * Returns a WebRTC MediaStream proxying the provided audio media stream.\n     * This allows additional Web Audio media stream source nodes to be connected\n     * to the destination node assoicated with the returned stream so we can mix\n     * aditional audio sorces into the local media stream (ie for 3-way conferencing).\n     * @param stream - The MediaStream to proxy.\n     */\n    initLocalMediaStream(stream) {\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        }\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamDestinationNode =\n            WebAudioSessionDescriptionHandler.audioContext.createMediaStreamDestination();\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n        return this.localMediaStreamDestinationNode.stream;\n    }\n    /**\n     * Join (conference) media streams with another party.\n     * @param peer - The session description handler of the peer to join with.\n     */\n    joinWith(peer) {\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        }\n        // Mix our inbound (remote) stream into the peer's outbound (local) streams.\n        const ourNewInboundStreamSource = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(this.remoteMediaStream);\n        const peerOutboundStreamDestination = peer.localMediaStreamDestinationNode;\n        if (peerOutboundStreamDestination === undefined) {\n            throw new Error(\"Peer outbound (local) stream local media stream destination is undefined.\");\n        }\n        ourNewInboundStreamSource.connect(peerOutboundStreamDestination);\n        // Mix the peer's inbound (remote) streams into our outbound (local) stream.\n        const peerNewInboundStreamSource = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(peer.remoteMediaStream);\n        const ourOutboundStreamDestination = this.localMediaStreamDestinationNode;\n        if (ourOutboundStreamDestination === undefined) {\n            throw new Error(\"Our outbound (local) stream local media stream destination is undefined.\");\n        }\n        peerNewInboundStreamSource.connect(ourOutboundStreamDestination);\n    }\n    /**\n     * Sets the original local media stream.\n     * @param stream - Media stream containing tracks to be utilized.\n     * @remarks\n     * Only the first audio and video tracks of the provided MediaStream are utilized.\n     * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n     */\n    setRealLocalMediaStream(stream) {\n        if (!WebAudioSessionDescriptionHandler.audioContext) {\n            throw new Error(\"SessionManagerSessionDescriptionHandler.audioContext undefined.\");\n        }\n        if (!this.localMediaStreamReal) {\n            this.initLocalMediaStream(stream);\n            return;\n        }\n        if (!this.localMediaStreamDestinationNode || !this.localMediaStreamSourceNode || !this.localMediaStreamReal) {\n            throw new Error(\"Local media stream undefined.\");\n        }\n        this.localMediaStreamReal = stream;\n        this.localMediaStreamSourceNode.disconnect(this.localMediaStreamDestinationNode);\n        this.localMediaStreamSourceNode = WebAudioSessionDescriptionHandler.audioContext.createMediaStreamSource(stream);\n        this.localMediaStreamSourceNode.connect(this.localMediaStreamDestinationNode);\n    }\n}\n","export * from \"./managed-session-factory-default.js\";\nexport * from \"./managed-session-factory.js\";\nexport * from \"./managed-session.js\";\nexport * from \"./session-manager-delegate.js\";\nexport * from \"./session-manager-options.js\";\nexport * from \"./session-manager.js\";\n","/**\n * Function which returns a ManagedSessionFactory.\n * @public\n */\nexport function defaultManagedSessionFactory() {\n    return (sessionManager, session) => {\n        return { session, held: false, muted: false };\n    };\n}\n","export {};\n","export {};\n","export {};\n","export {};\n","import { Invitation } from \"../../../api/invitation.js\";\nimport { Inviter } from \"../../../api/inviter.js\";\nimport { Messager } from \"../../../api/messager.js\";\nimport { Registerer } from \"../../../api/registerer.js\";\nimport { RegistererState } from \"../../../api/registerer-state.js\";\nimport { RequestPendingError } from \"../../../api/exceptions/request-pending.js\";\nimport { Session } from \"../../../api/session.js\";\nimport { SessionState } from \"../../../api/session-state.js\";\nimport { UserAgent } from \"../../../api/user-agent.js\";\nimport { UserAgentState } from \"../../../api/user-agent-state.js\";\nimport { SessionDescriptionHandler } from \"../session-description-handler/session-description-handler.js\";\nimport { Transport } from \"../transport/transport.js\";\nimport { defaultManagedSessionFactory } from \"./managed-session-factory-default.js\";\n/**\n * A session manager for SIP.js sessions.\n * @public\n */\nexport class SessionManager {\n    /**\n     * Constructs a new instance of the `SessionManager` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SessionManagerOptions} for details.\n     */\n    constructor(server, options = {}) {\n        /** Sessions being managed. */\n        this.managedSessions = [];\n        this.attemptingReconnection = false;\n        this.optionsPingFailure = false;\n        this.optionsPingRunning = false;\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({\n            aor: \"\",\n            autoStop: true,\n            delegate: {},\n            iceStopWaitingOnServerReflexive: false,\n            managedSessionFactory: defaultManagedSessionFactory(),\n            maxSimultaneousSessions: 2,\n            media: {},\n            optionsPingInterval: -1,\n            optionsPingRequestURI: \"\",\n            reconnectionAttempts: 3,\n            reconnectionDelay: 4,\n            registrationRetry: false,\n            registrationRetryInterval: 3,\n            registerGuard: null,\n            registererOptions: {},\n            registererRegisterOptions: {},\n            sendDTMFUsingSessionDescriptionHandler: false,\n            userAgentOptions: {}\n        }, SessionManager.stripUndefinedProperties(options));\n        // UserAgentOptions\n        const userAgentOptions = Object.assign({}, options.userAgentOptions);\n        // Transport\n        if (!userAgentOptions.transportConstructor) {\n            userAgentOptions.transportConstructor = Transport;\n        }\n        // TransportOptions\n        if (!userAgentOptions.transportOptions) {\n            userAgentOptions.transportOptions = {\n                server\n            };\n        }\n        // URI\n        if (!userAgentOptions.uri) {\n            // If an AOR was provided, convert it to a URI\n            if (options.aor) {\n                const uri = UserAgent.makeURI(options.aor);\n                if (!uri) {\n                    throw new Error(`Failed to create valid URI from ${options.aor}`);\n                }\n                userAgentOptions.uri = uri;\n            }\n        }\n        // UserAgent\n        this.userAgent = new UserAgent(userAgentOptions);\n        // UserAgent's delegate\n        this.userAgent.delegate = {\n            // Handle connection with server established\n            onConnect: () => {\n                this.logger.log(`Connected`);\n                if (this.delegate && this.delegate.onServerConnect) {\n                    this.delegate.onServerConnect();\n                }\n                // Attempt to register if we are supposed to be registered\n                if (this.shouldBeRegistered) {\n                    this.register();\n                }\n                // Start OPTIONS pings if we are to be pinging\n                if (this.options.optionsPingInterval > 0) {\n                    this.optionsPingStart();\n                }\n            },\n            // Handle connection with server lost\n            onDisconnect: async (error) => {\n                this.logger.log(`Disconnected`);\n                // Stop OPTIONS ping if need be.\n                let optionsPingFailure = false;\n                if (this.options.optionsPingInterval > 0) {\n                    optionsPingFailure = this.optionsPingFailure;\n                    this.optionsPingFailure = false;\n                    this.optionsPingStop();\n                }\n                // Let delgate know we have disconnected\n                if (this.delegate && this.delegate.onServerDisconnect) {\n                    this.delegate.onServerDisconnect(error);\n                }\n                // If the user called `disconnect` a graceful cleanup will be done therein.\n                // Only cleanup if network/server dropped the connection.\n                // Only reconnect if network/server dropped the connection\n                if (error || optionsPingFailure) {\n                    // There is no transport at this point, so we are not expecting to be able to\n                    // send messages much less get responses. So just dispose of everything without\n                    // waiting for anything to succeed.\n                    if (this.registerer) {\n                        this.logger.log(`Disposing of registerer...`);\n                        this.registerer.dispose().catch((e) => {\n                            this.logger.debug(`Error occurred disposing of registerer after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                        this.registerer = undefined;\n                    }\n                    this.managedSessions\n                        .slice()\n                        .map((el) => el.session)\n                        .forEach(async (session) => {\n                        this.logger.log(`Disposing of session...`);\n                        session.dispose().catch((e) => {\n                            this.logger.debug(`Error occurred disposing of a session after connection with server was lost.`);\n                            this.logger.debug(e.toString());\n                        });\n                    });\n                    // Attempt to reconnect if we are supposed to be connected.\n                    if (this.shouldBeConnected) {\n                        this.attemptReconnection();\n                    }\n                }\n            },\n            // Handle incoming invitations\n            onInvite: (invitation) => {\n                this.logger.log(`[${invitation.id}] Received INVITE`);\n                // Guard against a maximum number of pre-existing sessions.\n                // An incoming INVITE request may be received at any time and/or while in the process\n                // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n                const maxSessions = this.options.maxSimultaneousSessions;\n                if (maxSessions !== 0 && this.managedSessions.length > maxSessions) {\n                    this.logger.warn(`[${invitation.id}] Session already in progress, rejecting INVITE...`);\n                    invitation\n                        .reject()\n                        .then(() => {\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    })\n                        .catch((error) => {\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                    return;\n                }\n                // Use our configured constraints as options for any Inviter created as result of a REFER\n                const referralInviterOptions = {\n                    sessionDescriptionHandlerOptions: { constraints: this.constraints }\n                };\n                // Initialize our session\n                this.initSession(invitation, referralInviterOptions);\n                // Delegate\n                if (this.delegate && this.delegate.onCallReceived) {\n                    this.delegate.onCallReceived(invitation);\n                }\n                else {\n                    this.logger.warn(`[${invitation.id}] No handler available, rejecting INVITE...`);\n                    invitation\n                        .reject()\n                        .then(() => {\n                        this.logger.log(`[${invitation.id}] Rejected INVITE`);\n                    })\n                        .catch((error) => {\n                        this.logger.error(`[${invitation.id}] Failed to reject INVITE`);\n                        this.logger.error(error.toString());\n                    });\n                }\n            },\n            // Handle incoming messages\n            onMessage: (message) => {\n                message.accept().then(() => {\n                    if (this.delegate && this.delegate.onMessageReceived) {\n                        this.delegate.onMessageReceived(message);\n                    }\n                });\n            },\n            // Handle incoming notifications\n            onNotify: (notification) => {\n                notification.accept().then(() => {\n                    if (this.delegate && this.delegate.onNotificationReceived) {\n                        this.delegate.onNotificationReceived(notification);\n                    }\n                });\n            }\n        };\n        // RegistererOptions\n        this.registererOptions = Object.assign({}, options.registererOptions);\n        // RegistererRegisterOptions\n        this.registererRegisterOptions = Object.assign({}, options.registererRegisterOptions);\n        // Retry registration on failure or rejection.\n        if (this.options.registrationRetry) {\n            // If the register request is rejected, try again...\n            this.registererRegisterOptions.requestDelegate = this.registererRegisterOptions.requestDelegate || {};\n            const existingOnReject = this.registererRegisterOptions.requestDelegate.onReject;\n            this.registererRegisterOptions.requestDelegate.onReject = (response) => {\n                existingOnReject && existingOnReject(response);\n                // If at first we don't succeed, try try again...\n                this.attemptRegistration();\n            };\n        }\n        // Use the SIP.js logger\n        this.logger = this.userAgent.getLogger(\"sip.SessionManager\");\n        // Monitor network connectivity and attempt reconnection and reregistration when we come online\n        window.addEventListener(\"online\", () => {\n            this.logger.log(`Online`);\n            if (this.shouldBeConnected) {\n                this.connect();\n            }\n        });\n        // NOTE: The autoStop option does not currently work as one likley expects.\n        //       This code is here because the \"autoStop behavior\" and this assoicated\n        //       implemenation has been a recurring request. So instead of removing\n        //       the implementation again (because it doesn't work) and then having\n        //       to explain agian the issue over and over again to those who want it,\n        //       we have included it here to break that cycle. The implementation is\n        //       harmless and serves to provide an explaination for those interested.\n        if (this.options.autoStop) {\n            // Standard operation workflow will resume after this callback exits, meaning\n            // that any asynchronous operations are likely not going to be finished, especially\n            // if they are guaranteed to not be executed in the current tick (promises fall\n            // under this category, they will never be resolved synchronously by design).\n            window.addEventListener(\"beforeunload\", async () => {\n                this.shouldBeConnected = false;\n                this.shouldBeRegistered = false;\n                if (this.userAgent.state !== UserAgentState.Stopped) {\n                    // The stop() method returns a promise which will not resolve before the page unloads.\n                    await this.userAgent.stop();\n                }\n            });\n        }\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */\n    static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key) => {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                object[key] = options[key];\n            }\n            return object;\n        }, {});\n    }\n    /**\n     * The local media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */\n    getLocalMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) {\n            return undefined;\n        }\n        if (!(sdh instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        }\n        return sdh.localMediaStream;\n    }\n    /**\n     * The remote media stream. Undefined if call not answered.\n     * @param session - Session to get the media stream from.\n     */\n    getRemoteMediaStream(session) {\n        const sdh = session.sessionDescriptionHandler;\n        if (!sdh) {\n            return undefined;\n        }\n        if (!(sdh instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session description handler not instance of web SessionDescriptionHandler\");\n        }\n        return sdh.remoteMediaStream;\n    }\n    /**\n     * The local audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    getLocalAudioTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"audio\");\n    }\n    /**\n     * The local video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    getLocalVideoTrack(session) {\n        var _a;\n        return (_a = this.getLocalMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"video\");\n    }\n    /**\n     * The remote audio track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    getRemoteAudioTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"audio\");\n    }\n    /**\n     * The remote video track, if available.\n     * @param session - Session to get track from.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    getRemoteVideoTrack(session) {\n        var _a;\n        return (_a = this.getRemoteMediaStream(session)) === null || _a === void 0 ? void 0 : _a.getTracks().find((track) => track.kind === \"video\");\n    }\n    /**\n     * Connect.\n     * @remarks\n     * If not started, starts the UserAgent connecting the WebSocket Transport.\n     * Otherwise reconnects the UserAgent's WebSocket Transport.\n     * Attempts will be made to reconnect as needed.\n     */\n    async connect() {\n        this.logger.log(`Connecting UserAgent...`);\n        this.shouldBeConnected = true;\n        if (this.userAgent.state !== UserAgentState.Started) {\n            return this.userAgent.start();\n        }\n        return this.userAgent.reconnect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * If not stopped, stops the UserAgent disconnecting the WebSocket Transport.\n     */\n    async disconnect() {\n        this.logger.log(`Disconnecting UserAgent...`);\n        if (this.userAgent.state === UserAgentState.Stopped) {\n            return Promise.resolve();\n        }\n        this.shouldBeConnected = false;\n        this.shouldBeRegistered = false;\n        this.registerer = undefined;\n        return this.userAgent.stop();\n    }\n    /**\n     * Return true if transport is connected.\n     */\n    isConnected() {\n        return this.userAgent.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     * Attempts will be made to re-register as needed.\n     */\n    async register(registererRegisterOptions) {\n        this.logger.log(`Registering UserAgent...`);\n        this.shouldBeRegistered = true;\n        if (registererRegisterOptions !== undefined) {\n            this.registererRegisterOptions = Object.assign({}, registererRegisterOptions);\n        }\n        if (!this.registerer) {\n            this.registerer = new Registerer(this.userAgent, this.registererOptions);\n            this.registerer.stateChange.addListener((state) => {\n                switch (state) {\n                    case RegistererState.Initial:\n                        break;\n                    case RegistererState.Registered:\n                        if (this.delegate && this.delegate.onRegistered) {\n                            this.delegate.onRegistered();\n                        }\n                        break;\n                    case RegistererState.Unregistered:\n                        if (this.delegate && this.delegate.onUnregistered) {\n                            this.delegate.onUnregistered();\n                        }\n                        // If we transition to an unregister state, attempt to get back to a registered state.\n                        if (this.shouldBeRegistered) {\n                            this.attemptRegistration();\n                        }\n                        break;\n                    case RegistererState.Terminated:\n                        break;\n                    default:\n                        throw new Error(\"Unknown registerer state.\");\n                }\n            });\n        }\n        return this.attemptRegistration(true);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */\n    async unregister(registererUnregisterOptions) {\n        this.logger.log(`Unregistering UserAgent...`);\n        this.shouldBeRegistered = false;\n        if (!this.registerer) {\n            this.logger.warn(`No registerer to unregister.`);\n            return Promise.resolve();\n        }\n        return this.registerer.unregister(registererUnregisterOptions).then(() => {\n            return;\n        });\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */\n    async call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`Beginning Session...`);\n        // Guard against a maximum number of pre-existing sessions.\n        // An incoming INVITE request may be received at any time and/or while in the process\n        // of sending an outgoing INVITE request. So we reject any incoming INVITE in those cases.\n        const maxSessions = this.options.maxSimultaneousSessions;\n        if (maxSessions !== 0 && this.managedSessions.length > maxSessions) {\n            return Promise.reject(new Error(\"Maximum number of sessions already exists.\"));\n        }\n        const target = UserAgent.makeURI(destination);\n        if (!target) {\n            return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        }\n        // Use our configured constraints as InviterOptions if none provided\n        if (!inviterOptions) {\n            inviterOptions = {};\n        }\n        if (!inviterOptions.sessionDescriptionHandlerOptions) {\n            inviterOptions.sessionDescriptionHandlerOptions = {};\n        }\n        if (!inviterOptions.sessionDescriptionHandlerOptions.constraints) {\n            inviterOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        }\n        // If utilizing early media, add a handler to catch 183 Session Progress\n        // messages and then to play the associated remote media (the early media).\n        if (inviterOptions.earlyMedia) {\n            inviterInviteOptions = inviterInviteOptions || {};\n            inviterInviteOptions.requestDelegate = inviterInviteOptions.requestDelegate || {};\n            const existingOnProgress = inviterInviteOptions.requestDelegate.onProgress;\n            inviterInviteOptions.requestDelegate.onProgress = (response) => {\n                if (response.message.statusCode === 183) {\n                    this.setupRemoteMedia(inviter);\n                }\n                existingOnProgress && existingOnProgress(response);\n            };\n        }\n        // TODO: Any existing onSessionDescriptionHandler is getting clobbered here.\n        // If we get a server reflexive candidate, stop waiting on ICE gathering to complete.\n        // The candidate is a server reflexive candidate; the ip indicates an intermediary\n        // address assigned by the STUN server to represent the candidate's peer anonymously.\n        if (this.options.iceStopWaitingOnServerReflexive) {\n            inviterOptions.delegate = inviterOptions.delegate || {};\n            inviterOptions.delegate.onSessionDescriptionHandler = (sessionDescriptionHandler) => {\n                if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n                    throw new Error(\"Session description handler not instance of SessionDescriptionHandler\");\n                }\n                sessionDescriptionHandler.peerConnectionDelegate = {\n                    onicecandidate: (event) => {\n                        var _a;\n                        if (((_a = event.candidate) === null || _a === void 0 ? void 0 : _a.type) === \"srflx\") {\n                            this.logger.log(`[${inviter.id}] Found srflx ICE candidate, stop waiting...`);\n                            // In sip.js > 0.20.1 this cast should be removed as iceGatheringComplete will be public\n                            const sdh = sessionDescriptionHandler;\n                            sdh.iceGatheringComplete();\n                        }\n                    }\n                };\n            };\n        }\n        // Create a new Inviter for the outgoing Session\n        const inviter = new Inviter(this.userAgent, target, inviterOptions);\n        // Send INVITE\n        return this.sendInvite(inviter, inviterOptions, inviterInviteOptions).then(() => {\n            return inviter;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @param session - Session to hangup.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    async hangup(session) {\n        this.logger.log(`[${session.id}] Hangup...`);\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.terminate(session);\n    }\n    /**\n     * Answer an incoming call.\n     * @param session - Session to answer.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */\n    async answer(session, invitationAcceptOptions) {\n        this.logger.log(`[${session.id}] Accepting Invitation...`);\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        if (!(session instanceof Invitation)) {\n            return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        }\n        // Use our configured constraints as InvitationAcceptOptions if none provided\n        if (!invitationAcceptOptions) {\n            invitationAcceptOptions = {};\n        }\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions) {\n            invitationAcceptOptions.sessionDescriptionHandlerOptions = {};\n        }\n        if (!invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints) {\n            invitationAcceptOptions.sessionDescriptionHandlerOptions.constraints = this.constraints;\n        }\n        return session.accept(invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @param session - Session to decline.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    async decline(session) {\n        this.logger.log(`[${session.id}] Rejecting Invitation...`);\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        if (!(session instanceof Invitation)) {\n            return Promise.reject(new Error(\"Session not instance of Invitation.\"));\n        }\n        return session.reject();\n    }\n    /**\n     * Hold call\n     * @param session - Session to hold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    async hold(session) {\n        this.logger.log(`[${session.id}] Holding session...`);\n        return this.setHold(session, true);\n    }\n    /**\n     * Unhold call.\n     * @param session - Session to unhold.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    async unhold(session) {\n        this.logger.log(`[${session.id}] Unholding session...`);\n        return this.setHold(session, false);\n    }\n    /**\n     * Hold state.\n     * @param session - Session to check.\n     * @remarks\n     * True if session is on hold.\n     */\n    isHeld(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.held : false;\n    }\n    /**\n     * Mute call.\n     * @param session - Session to mute.\n     * @remarks\n     * Disable sender's media tracks.\n     */\n    mute(session) {\n        this.logger.log(`[${session.id}] Disabling media tracks...`);\n        this.setMute(session, true);\n    }\n    /**\n     * Unmute call.\n     * @param session - Session to unmute.\n     * @remarks\n     * Enable sender's media tracks.\n     */\n    unmute(session) {\n        this.logger.log(`[${session.id}] Enabling media tracks...`);\n        this.setMute(session, false);\n    }\n    /**\n     * Mute state.\n     * @param session - Session to check.\n     * @remarks\n     * True if sender's media track is disabled.\n     */\n    isMuted(session) {\n        const managedSession = this.sessionManaged(session);\n        return managedSession ? managedSession.muted : false;\n    }\n    /**\n     * Send DTMF.\n     * @param session - Session to send on.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */\n    async sendDTMF(session, tone) {\n        this.logger.log(`[${session.id}] Sending DTMF...`);\n        // Validate tone\n        if (!/^[0-9A-D#*,]$/.exec(tone)) {\n            return Promise.reject(new Error(\"Invalid DTMF tone.\"));\n        }\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        this.logger.log(`[${session.id}] Sending DTMF tone: ${tone}`);\n        if (this.options.sendDTMFUsingSessionDescriptionHandler) {\n            if (!session.sessionDescriptionHandler) {\n                return Promise.reject(new Error(\"Session desciption handler undefined.\"));\n            }\n            if (!session.sessionDescriptionHandler.sendDtmf(tone)) {\n                return Promise.reject(new Error(\"Failed to send DTMF\"));\n            }\n            return Promise.resolve();\n        }\n        else {\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            // The UA MUST populate the \"application/dtmf-relay\" body, as defined\n            // earlier, with the button pressed and the duration it was pressed\n            // for.  Technically, this actually requires the INFO to be generated\n            // when the user *releases* the button, however if the user has still\n            // not released a button after 5 seconds, which is the maximum duration\n            // supported by this mechanism, the UA should generate the INFO at that\n            // time.\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00#section-5.3\n            const dtmf = tone;\n            const duration = 2000;\n            const body = {\n                contentDisposition: \"render\",\n                contentType: \"application/dtmf-relay\",\n                content: \"Signal=\" + dtmf + \"\\r\\nDuration=\" + duration\n            };\n            const requestOptions = { body };\n            return session.info({ requestOptions }).then(() => {\n                return;\n            });\n        }\n    }\n    /**\n     * Transfer.\n     * @param session - Session with the transferee to transfer.\n     * @param target - The referral target.\n     * @remarks\n     * If target is a Session this is an attended transfer completion (REFER with Replaces),\n     * otherwise this is a blind transfer (REFER). Attempting an attended transfer\n     * completion on a call that has not been answered will be rejected. To implement\n     * an attended transfer with early completion, hangup the call with the target\n     * and execute a blind transfer to the target.\n     */\n    async transfer(session, target, options) {\n        this.logger.log(`[${session.id}] Referring session...`);\n        if (target instanceof Session) {\n            return session.refer(target, options).then(() => {\n                return;\n            });\n        }\n        const uri = UserAgent.makeURI(target);\n        if (!uri) {\n            return Promise.reject(new Error(`Failed to create a valid URI from \"${target}\"`));\n        }\n        return session.refer(uri, options).then(() => {\n            return;\n        });\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */\n    async message(destination, message) {\n        this.logger.log(`Sending message...`);\n        const target = UserAgent.makeURI(destination);\n        if (!target) {\n            return Promise.reject(new Error(`Failed to create a valid URI from \"${destination}\"`));\n        }\n        return new Messager(this.userAgent, target, message).message();\n    }\n    /** Media constraints. */\n    get constraints() {\n        let constraints = { audio: true, video: false }; // default to audio only calls\n        if (this.options.media.constraints) {\n            constraints = Object.assign({}, this.options.media.constraints);\n        }\n        return constraints;\n    }\n    /**\n     * Attempt reconnection up to `reconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */\n    attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (!this.shouldBeConnected) {\n            this.logger.log(`Should not be connected currently`);\n            return; // If intentionally disconnected, don't reconnect.\n        }\n        if (this.attemptingReconnection) {\n            this.logger.log(`Reconnection attempt already in progress`);\n        }\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Reconnection maximum attempts reached`);\n            return;\n        }\n        if (reconnectionAttempt === 1) {\n            this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        }\n        else {\n            this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying in ${reconnectionDelay} seconds`);\n        }\n        this.attemptingReconnection = true;\n        setTimeout(() => {\n            if (!this.shouldBeConnected) {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - aborted`);\n                this.attemptingReconnection = false;\n                return; // If intentionally disconnected, don't reconnect.\n            }\n            this.userAgent\n                .reconnect()\n                .then(() => {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n                this.attemptingReconnection = false;\n            })\n                .catch((error) => {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.logger.error(error.message);\n                this.attemptingReconnection = false;\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Register to receive calls.\n     * @param withoutDelay - If true attempt immediately, otherwise wait `registrationRetryInterval`.\n     */\n    attemptRegistration(withoutDelay = false) {\n        this.logger.log(`Registration attempt ${withoutDelay ? \"without delay\" : \"\"}`);\n        if (!this.shouldBeRegistered) {\n            this.logger.log(`Should not be registered currently`);\n            return Promise.resolve();\n        }\n        // It only makes sense to have one attempt in progress at a time.\n        // Perhaps we shall (or should) try once again.\n        if (this.registrationAttemptTimeout !== undefined) {\n            this.logger.log(`Registration attempt already in progress`);\n            return Promise.resolve();\n        }\n        // Helper function to send the register request.\n        const _register = () => {\n            // If we do not have a registerer, it is not worth trying to register.\n            if (!this.registerer) {\n                this.logger.log(`Registerer undefined`);\n                return Promise.resolve();\n            }\n            // If the WebSocket transport is not connected, it is not worth trying to register.\n            // Perhpas we shall (or should) try once we are connected.\n            if (!this.isConnected()) {\n                this.logger.log(`User agent not connected`);\n                return Promise.resolve();\n            }\n            // If the UserAgent is stopped, it is not worth trying to register.\n            // Perhaps we shall (or should) try once the UserAgent is running.\n            if (this.userAgent.state === UserAgentState.Stopped) {\n                this.logger.log(`User agent stopped`);\n                return Promise.resolve();\n            }\n            // If no guard defined, we are good to proceed without any further ado.\n            if (!this.options.registerGuard) {\n                return this.registerer.register(this.registererRegisterOptions).then(() => {\n                    return;\n                });\n            }\n            // Otherwise check to make sure the guard does not want us halt.\n            return this.options\n                .registerGuard()\n                .catch((error) => {\n                this.logger.log(`Register guard rejected will making registration attempt`);\n                throw error;\n            })\n                .then((halt) => {\n                if (halt || !this.registerer) {\n                    return Promise.resolve();\n                }\n                return this.registerer.register(this.registererRegisterOptions).then(() => {\n                    return;\n                });\n            });\n        };\n        // Compute an amount of time in seconds to wait before sending another register request.\n        // This is a small attempt to avoid DOS attacking our own backend in the event that a\n        // relatively large number of clients sychonously keep retrying register reqeusts.\n        // This is known to happen when the backend goes down for a period and all clients\n        // are attempting to register again - the backend gets slammed with synced reqeusts.\n        const computeRegistrationTimeout = (lowerBound) => {\n            const upperBound = lowerBound * 2;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        // Send register request after a delay\n        return new Promise((resolve, reject) => {\n            this.registrationAttemptTimeout = setTimeout(() => {\n                _register()\n                    .then(() => {\n                    this.registrationAttemptTimeout = undefined;\n                    resolve();\n                })\n                    .catch((error) => {\n                    this.registrationAttemptTimeout = undefined;\n                    if (error instanceof RequestPendingError) {\n                        resolve();\n                    }\n                    else {\n                        reject(error);\n                    }\n                });\n            }, withoutDelay ? 0 : computeRegistrationTimeout(this.options.registrationRetryInterval));\n        });\n    }\n    /** Helper function to remove media from html elements. */\n    cleanupMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session does not exist.\");\n        }\n        if (managedSession.mediaLocal) {\n            if (managedSession.mediaLocal.video) {\n                managedSession.mediaLocal.video.srcObject = null;\n                managedSession.mediaLocal.video.pause();\n            }\n        }\n        if (managedSession.mediaRemote) {\n            if (managedSession.mediaRemote.audio) {\n                managedSession.mediaRemote.audio.srcObject = null;\n                managedSession.mediaRemote.audio.pause();\n            }\n            if (managedSession.mediaRemote.video) {\n                managedSession.mediaRemote.video.srcObject = null;\n                managedSession.mediaRemote.video.pause();\n            }\n        }\n    }\n    /** Helper function to enable/disable media tracks. */\n    enableReceiverTracks(session, enable) {\n        if (!this.sessionExists(session)) {\n            throw new Error(\"Session does not exist.\");\n        }\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        }\n        sessionDescriptionHandler.enableReceiverTracks(enable);\n    }\n    /** Helper function to enable/disable media tracks. */\n    enableSenderTracks(session, enable) {\n        if (!this.sessionExists(session)) {\n            throw new Error(\"Session does not exist.\");\n        }\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        }\n        sessionDescriptionHandler.enableSenderTracks(enable);\n    }\n    /**\n     * Setup session delegate and state change handler.\n     * @param session - Session to setup.\n     * @param referralInviterOptions - Options for any Inviter created as result of a REFER.\n     */\n    initSession(session, referralInviterOptions) {\n        // Add the session\n        this.sessionAdd(session);\n        // Call session created callback\n        if (this.delegate && this.delegate.onCallCreated) {\n            this.delegate.onCallCreated(session);\n        }\n        // Setup session state change handler\n        session.stateChange.addListener((state) => {\n            this.logger.log(`[${session.id}] Session state changed to ${state}`);\n            switch (state) {\n                case SessionState.Initial:\n                    break;\n                case SessionState.Establishing:\n                    break;\n                case SessionState.Established:\n                    this.setupLocalMedia(session);\n                    this.setupRemoteMedia(session);\n                    if (this.delegate && this.delegate.onCallAnswered) {\n                        this.delegate.onCallAnswered(session);\n                    }\n                    break;\n                case SessionState.Terminating:\n                // fall through\n                case SessionState.Terminated:\n                    // This will already have executed if/when we fall\n                    // through from Terminating and thus the managed\n                    // session may already have been cleaned up.\n                    if (this.sessionExists(session)) {\n                        this.cleanupMedia(session);\n                        this.sessionRemove(session);\n                        if (this.delegate && this.delegate.onCallHangup) {\n                            this.delegate.onCallHangup(session);\n                        }\n                    }\n                    break;\n                default:\n                    throw new Error(\"Unknown session state.\");\n            }\n        });\n        // TODO: Any existing onInfo or onRefer delegate gets clobbered here.\n        // Setup delegate\n        session.delegate = session.delegate || {};\n        session.delegate.onInfo = (info) => {\n            // As RFC 6086 states, sending DTMF via INFO is not standardized...\n            //\n            // Companies have been using INFO messages in order to transport\n            // Dual-Tone Multi-Frequency (DTMF) tones.  All mechanisms are\n            // proprietary and have not been standardized.\n            // https://tools.ietf.org/html/rfc6086#section-2\n            //\n            // It is however widely supported based on this draft:\n            // https://tools.ietf.org/html/draft-kaplan-dispatch-info-dtmf-package-00\n            var _a;\n            // FIXME: TODO: We should reject correctly...\n            //\n            // If a UA receives an INFO request associated with an Info Package that\n            // the UA has not indicated willingness to receive, the UA MUST send a\n            // 469 (Bad Info Package) response (see Section 11.6), which contains a\n            // Recv-Info header field with Info Packages for which the UA is willing\n            // to receive INFO requests.\n            // https://tools.ietf.org/html/rfc6086#section-4.2.2\n            // No delegate\n            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === undefined) {\n                info.reject();\n                return;\n            }\n            // Invalid content type\n            const contentType = info.request.getHeader(\"content-type\");\n            if (!contentType || !/^application\\/dtmf-relay/i.exec(contentType)) {\n                info.reject();\n                return;\n            }\n            // Invalid body\n            const body = info.request.body.split(\"\\r\\n\", 2);\n            if (body.length !== 2) {\n                info.reject();\n                return;\n            }\n            // Invalid tone\n            let tone;\n            const toneRegExp = /^(Signal\\s*?=\\s*?)([0-9A-D#*]{1})(\\s)?.*/;\n            if (body[0] !== undefined && toneRegExp.test(body[0])) {\n                tone = body[0].replace(toneRegExp, \"$2\");\n            }\n            if (!tone) {\n                info.reject();\n                return;\n            }\n            // Invalid duration\n            let duration;\n            const durationRegExp = /^(Duration\\s?=\\s?)([0-9]{1,4})(\\s)?.*/;\n            if (body[1] !== undefined && durationRegExp.test(body[1])) {\n                duration = parseInt(body[1].replace(durationRegExp, \"$2\"), 10);\n            }\n            if (!duration) {\n                info.reject();\n                return;\n            }\n            info\n                .accept()\n                .then(() => {\n                if (this.delegate && this.delegate.onCallDTMFReceived) {\n                    if (!tone || !duration) {\n                        throw new Error(\"Tone or duration undefined.\");\n                    }\n                    this.delegate.onCallDTMFReceived(session, tone, duration);\n                }\n            })\n                .catch((error) => {\n                this.logger.error(error.message);\n            });\n        };\n        session.delegate.onRefer = (referral) => {\n            referral\n                .accept()\n                .then(() => this.sendInvite(referral.makeInviter(referralInviterOptions), referralInviterOptions))\n                .catch((error) => {\n                this.logger.error(error.message);\n            });\n        };\n    }\n    /**\n     * Periodically send OPTIONS pings and disconnect when a ping fails.\n     * @param requestURI - Request URI to target\n     * @param fromURI - From URI\n     * @param toURI - To URI\n     */\n    optionsPingRun(requestURI, fromURI, toURI) {\n        // Guard against nvalid interval\n        if (this.options.optionsPingInterval < 1) {\n            throw new Error(\"Invalid options ping interval.\");\n        }\n        // Guard against sending a ping when there is one outstanading\n        if (this.optionsPingRunning) {\n            return;\n        }\n        this.optionsPingRunning = true;\n        // Setup next ping to run in future\n        this.optionsPingTimeout = setTimeout(() => {\n            this.optionsPingTimeout = undefined;\n            // If ping succeeds...\n            const onPingSuccess = () => {\n                // record success or failure\n                this.optionsPingFailure = false;\n                // if we are still running, queue up the next ping\n                if (this.optionsPingRunning) {\n                    this.optionsPingRunning = false;\n                    this.optionsPingRun(requestURI, fromURI, toURI);\n                }\n            };\n            // If ping fails...\n            const onPingFailure = () => {\n                this.logger.error(\"OPTIONS ping failed\");\n                // record success or failure\n                this.optionsPingFailure = true;\n                // stop running\n                this.optionsPingRunning = false;\n                // disconnect the transport\n                this.userAgent.transport.disconnect().catch((error) => this.logger.error(error));\n            };\n            // Create an OPTIONS request message\n            const core = this.userAgent.userAgentCore;\n            const message = core.makeOutgoingRequestMessage(\"OPTIONS\", requestURI, fromURI, toURI, {});\n            // Send the request message\n            this.optionsPingRequest = core.request(message, {\n                onAccept: () => {\n                    this.optionsPingRequest = undefined;\n                    onPingSuccess();\n                },\n                onReject: (response) => {\n                    this.optionsPingRequest = undefined;\n                    // Ping fails on following responses...\n                    // - 408 Request Timeout (no response was received)\n                    // - 503 Service Unavailable (a transport layer error occured)\n                    if (response.message.statusCode === 408 || response.message.statusCode === 503) {\n                        onPingFailure();\n                    }\n                    else {\n                        onPingSuccess();\n                    }\n                }\n            });\n        }, this.options.optionsPingInterval * 1000);\n    }\n    /**\n     * Start sending OPTIONS pings.\n     */\n    optionsPingStart() {\n        this.logger.log(`OPTIONS pings started`);\n        // Create the URIs needed to send OPTIONS pings\n        let requestURI, fromURI, toURI;\n        if (this.options.optionsPingRequestURI) {\n            // Use whatever specific RURI is provided.\n            requestURI = UserAgent.makeURI(this.options.optionsPingRequestURI);\n            if (!requestURI) {\n                throw new Error(\"Failed to create Request URI.\");\n            }\n            // Use the user agent's contact URI for From and To URIs\n            fromURI = this.userAgent.contact.uri.clone();\n            toURI = this.userAgent.contact.uri.clone();\n        }\n        else if (this.options.aor) {\n            // Otherwise use the AOR provided to target the assocated registrar server.\n            const uri = UserAgent.makeURI(this.options.aor);\n            if (!uri) {\n                throw new Error(\"Failed to create URI.\");\n            }\n            requestURI = uri.clone();\n            requestURI.user = undefined; // target the registrar server\n            fromURI = uri.clone();\n            toURI = uri.clone();\n        }\n        else {\n            this.logger.error(\"You have enabled sending OPTIONS pings and as such you must provide either \" +\n                \"a) an AOR to register, or b) an RURI to use for the target of the OPTIONS ping requests. \");\n            return;\n        }\n        // Send the OPTIONS pings\n        this.optionsPingRun(requestURI, fromURI, toURI);\n    }\n    /**\n     * Stop sending OPTIONS pings.\n     */\n    optionsPingStop() {\n        this.logger.log(`OPTIONS pings stopped`);\n        this.optionsPingRunning = false;\n        this.optionsPingFailure = false;\n        if (this.optionsPingRequest) {\n            this.optionsPingRequest.dispose();\n            this.optionsPingRequest = undefined;\n        }\n        if (this.optionsPingTimeout) {\n            clearTimeout(this.optionsPingTimeout);\n            this.optionsPingTimeout = undefined;\n        }\n    }\n    /** Helper function to init send then send invite. */\n    async sendInvite(inviter, inviterOptions, inviterInviteOptions) {\n        // Initialize our session\n        this.initSession(inviter, inviterOptions);\n        // Send the INVITE\n        return inviter.invite(inviterInviteOptions).then(() => {\n            this.logger.log(`[${inviter.id}] Sent INVITE`);\n        });\n    }\n    /** Helper function to add a session to the ones we are managing. */\n    sessionAdd(session) {\n        const managedSession = this.options.managedSessionFactory(this, session);\n        this.managedSessions.push(managedSession);\n    }\n    /** Helper function to check if the session is one we are managing. */\n    sessionExists(session) {\n        return this.sessionManaged(session) !== undefined;\n    }\n    /** Helper function to check if the session is one we are managing. */\n    sessionManaged(session) {\n        return this.managedSessions.find((el) => el.session.id === session.id);\n    }\n    /** Helper function to remoce a session from the ones we are managing. */\n    sessionRemove(session) {\n        this.managedSessions = this.managedSessions.filter((el) => el.session.id !== session.id);\n    }\n    /**\n     * Puts Session on hold.\n     * @param session - The session to set.\n     * @param hold - Hold on if true, off if false.\n     */\n    async setHold(session, hold) {\n        if (!this.sessionExists(session)) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        // Just resolve if we are already in correct state\n        if (this.isHeld(session) === hold) {\n            return Promise.resolve();\n        }\n        const sessionDescriptionHandler = session.sessionDescriptionHandler;\n        if (!(sessionDescriptionHandler instanceof SessionDescriptionHandler)) {\n            throw new Error(\"Session's session description handler not instance of SessionDescriptionHandler.\");\n        }\n        const options = {\n            requestDelegate: {\n                onAccept: () => {\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = hold;\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) {\n                            this.delegate.onCallHold(session, managedSession.held);\n                        }\n                    }\n                },\n                onReject: () => {\n                    this.logger.warn(`[${session.id}] Re-invite request was rejected`);\n                    const managedSession = this.sessionManaged(session);\n                    if (managedSession !== undefined) {\n                        managedSession.held = !hold; // this was preemptively set so undo on failure\n                        this.enableReceiverTracks(session, !managedSession.held);\n                        this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n                        if (this.delegate && this.delegate.onCallHold) {\n                            this.delegate.onCallHold(session, managedSession.held);\n                        }\n                    }\n                }\n            }\n        };\n        // Session properties used to pass options to the SessionDescriptionHandler:\n        //\n        // 1) Session.sessionDescriptionHandlerOptions\n        //    SDH options for the initial INVITE transaction.\n        //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n        //\n        // 2) Session.sessionDescriptionHandlerOptionsReInvite\n        //    SDH options for re-INVITE transactions.\n        //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n        //    - May be set directly at anytime.\n        //    - May optionally be set via constructor option.\n        //    - May optionally be set via options passed to Session.invite().\n        const sessionDescriptionHandlerOptions = session.sessionDescriptionHandlerOptionsReInvite;\n        sessionDescriptionHandlerOptions.hold = hold;\n        session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n        // Preemptively and optimistically set held state (but do not call delegate).\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session is undefiend.\");\n        }\n        managedSession.held = hold;\n        // Send re-INVITE\n        return session\n            .invite(options)\n            .then(() => {\n            // Preemptively enable/disable tracks\n            const managedSession = this.sessionManaged(session);\n            if (managedSession !== undefined) {\n                this.enableReceiverTracks(session, !managedSession.held);\n                this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n            }\n        })\n            .catch((error) => {\n            managedSession.held = !hold; // was preemptively set so undo on failure\n            if (error instanceof RequestPendingError) {\n                this.logger.error(`[${session.id}] A hold request is already in progress.`);\n            }\n            throw error;\n        });\n    }\n    /**\n     * Puts Session on mute.\n     * @param session - The session to mute.\n     * @param mute - Mute on if true, off if false.\n     */\n    setMute(session, mute) {\n        if (!this.sessionExists(session)) {\n            this.logger.warn(`[${session.id}] A session is required to enabled/disable media tracks`);\n            return;\n        }\n        if (session.state !== SessionState.Established) {\n            this.logger.warn(`[${session.id}] An established session is required to enable/disable media tracks`);\n            return;\n        }\n        const managedSession = this.sessionManaged(session);\n        if (managedSession !== undefined) {\n            managedSession.muted = mute;\n            this.enableSenderTracks(session, !managedSession.held && !managedSession.muted);\n        }\n    }\n    /** Helper function to attach local media to html elements. */\n    setupLocalMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session does not exist.\");\n        }\n        // Get the local media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaLocal = typeof this.options.media.local === \"function\" ? this.options.media.local(session) : this.options.media.local;\n        managedSession.mediaLocal = mediaLocal;\n        const mediaElement = mediaLocal === null || mediaLocal === void 0 ? void 0 : mediaLocal.video;\n        if (mediaElement) {\n            const localStream = this.getLocalMediaStream(session);\n            if (!localStream) {\n                throw new Error(\"Local media stream undefiend.\");\n            }\n            mediaElement.srcObject = localStream;\n            mediaElement.volume = 0;\n            mediaElement.play().catch((error) => {\n                this.logger.error(`[${session.id}] Failed to play local media`);\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /** Helper function to attach remote media to html elements. */\n    setupRemoteMedia(session) {\n        const managedSession = this.sessionManaged(session);\n        if (!managedSession) {\n            throw new Error(\"Managed session does not exist.\");\n        }\n        // Get the remote media element, if any, from the and configuraiton options\n        // and save the info with the managed session so we can clean it up later.\n        const mediaRemote = typeof this.options.media.remote === \"function\" ? this.options.media.remote(session) : this.options.media.remote;\n        managedSession.mediaRemote = mediaRemote;\n        const mediaElement = (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.video) || (mediaRemote === null || mediaRemote === void 0 ? void 0 : mediaRemote.audio);\n        if (mediaElement) {\n            const remoteStream = this.getRemoteMediaStream(session);\n            if (!remoteStream) {\n                throw new Error(\"Remote media stream undefiend.\");\n            }\n            mediaElement.autoplay = true; // Safari hack, because you cannot call .play() from a non user action\n            mediaElement.srcObject = remoteStream;\n            mediaElement.play().catch((error) => {\n                this.logger.error(`[${session.id}] Failed to play remote media`);\n                this.logger.error(error.message);\n            });\n            remoteStream.onaddtrack = () => {\n                this.logger.log(`Remote media onaddtrack`);\n                mediaElement.load(); // Safari hack, as it doesn't work otheriwse\n                mediaElement.play().catch((error) => {\n                    this.logger.error(`[${session.id}] Failed to play remote media`);\n                    this.logger.error(error.message);\n                });\n            };\n        }\n    }\n    /**\n     * End a session.\n     * @param session - The session to terminate.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when Session is terminated.\n     */\n    async terminate(session) {\n        this.logger.log(`[${session.id}] Terminating...`);\n        switch (session.state) {\n            case SessionState.Initial:\n                if (session instanceof Inviter) {\n                    return session.cancel().then(() => {\n                        this.logger.log(`[${session.id}] Inviter never sent INVITE (canceled)`);\n                    });\n                }\n                else if (session instanceof Invitation) {\n                    return session.reject().then(() => {\n                        this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                    });\n                }\n                else {\n                    throw new Error(\"Unknown session type.\");\n                }\n            case SessionState.Establishing:\n                if (session instanceof Inviter) {\n                    return session.cancel().then(() => {\n                        this.logger.log(`[${session.id}] Inviter canceled (sent CANCEL)`);\n                    });\n                }\n                else if (session instanceof Invitation) {\n                    return session.reject().then(() => {\n                        this.logger.log(`[${session.id}] Invitation rejected (sent 480)`);\n                    });\n                }\n                else {\n                    throw new Error(\"Unknown session type.\");\n                }\n            case SessionState.Established:\n                return session.bye().then(() => {\n                    this.logger.log(`[${session.id}] Session ended (sent BYE)`);\n                });\n            case SessionState.Terminating:\n                break;\n            case SessionState.Terminated:\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.log(`[${session.id}] Terminating in state ${session.state}, no action taken`);\n        return Promise.resolve();\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { fromBodyLegacy, getBody } from \"../core/messages/body.js\";\nimport { SignalingState } from \"../core/session/session.js\";\nimport { Timers } from \"../core/timers.js\";\nimport { TransactionStateError } from \"../core/exceptions/transaction-state-error.js\";\nimport { getReasonPhrase } from \"../core/messages/utils.js\";\nimport { Cancel } from \"./cancel.js\";\nimport { ContentTypeUnsupportedError } from \"./exceptions/content-type-unsupported.js\";\nimport { SessionDescriptionHandlerError } from \"./exceptions/session-description-handler.js\";\nimport { SessionTerminatedError } from \"./exceptions/session-terminated.js\";\nimport { Session } from \"./session.js\";\nimport { SessionState } from \"./session-state.js\";\nimport { SIPExtension } from \"./user-agent-options.js\";\n/**\n * An invitation is an offer to establish a {@link Session} (incoming INVITE).\n * @public\n */\nexport class Invitation extends Session {\n    /** @internal */\n    constructor(userAgent, incomingInviteRequest) {\n        super(userAgent);\n        this.incomingInviteRequest = incomingInviteRequest;\n        /** True if dispose() has been called. */\n        this.disposed = false;\n        /** INVITE will be rejected if not accepted within a certain period time. */\n        this.expiresTimer = undefined;\n        /** True if this Session has been Terminated due to a CANCEL request. */\n        this.isCanceled = false;\n        /** Are reliable provisional responses required or supported. */\n        this.rel100 = \"none\";\n        /** The current RSeq header value. */\n        this.rseq = Math.floor(Math.random() * 10000);\n        /** INVITE will be rejected if final response not sent in a certain period time. */\n        this.userNoAnswerTimer = undefined;\n        /** True if waiting for a PRACK before sending a 200 Ok. */\n        this.waitingForPrack = false;\n        this.logger = userAgent.getLogger(\"sip.Invitation\");\n        const incomingRequestMessage = this.incomingInviteRequest.message;\n        // Set 100rel if necessary\n        const requireHeader = incomingRequestMessage.getHeader(\"require\");\n        if (requireHeader && requireHeader.toLowerCase().includes(\"100rel\")) {\n            this.rel100 = \"required\";\n        }\n        const supportedHeader = incomingRequestMessage.getHeader(\"supported\");\n        if (supportedHeader && supportedHeader.toLowerCase().includes(\"100rel\")) {\n            this.rel100 = \"supported\";\n        }\n        // FIXME: HACK: This is a hack to port an existing behavior.\n        // Set the toTag on the incoming request message to the toTag which\n        // will be used in the response to the incoming request!!!\n        // The behavior being ported appears to be a hack itself,\n        // so this is a hack to port a hack. At least one test spec\n        // relies on it (which is yet another hack).\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        incomingRequestMessage.toTag = incomingInviteRequest.toTag;\n        if (typeof incomingRequestMessage.toTag !== \"string\") {\n            throw new TypeError(\"toTag should have been a string.\");\n        }\n        // The following mapping values are RECOMMENDED:\n        // ...\n        // 19 no answer from the user              480 Temporarily unavailable\n        // https://tools.ietf.org/html/rfc3398#section-7.2.4.1\n        this.userNoAnswerTimer = setTimeout(() => {\n            incomingInviteRequest.reject({ statusCode: 480 });\n            this.stateTransition(SessionState.Terminated);\n        }, this.userAgent.configuration.noAnswerTimeout ? this.userAgent.configuration.noAnswerTimeout * 1000 : 60000);\n        // 1. If the request is an INVITE that contains an Expires header\n        // field, the UAS core sets a timer for the number of seconds\n        // indicated in the header field value.  When the timer fires, the\n        // invitation is considered to be expired.  If the invitation\n        // expires before the UAS has generated a final response, a 487\n        // (Request Terminated) response SHOULD be generated.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1\n        if (incomingRequestMessage.hasHeader(\"expires\")) {\n            const expires = Number(incomingRequestMessage.getHeader(\"expires\") || 0) * 1000;\n            this.expiresTimer = setTimeout(() => {\n                if (this.state === SessionState.Initial) {\n                    incomingInviteRequest.reject({ statusCode: 487 });\n                    this.stateTransition(SessionState.Terminated);\n                }\n            }, expires);\n        }\n        // Session parent properties\n        const assertedIdentity = this.request.getHeader(\"P-Asserted-Identity\");\n        if (assertedIdentity) {\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(assertedIdentity);\n        }\n        this._contact = this.userAgent.contact.toString();\n        const contentDisposition = incomingRequestMessage.parseHeader(\"Content-Disposition\");\n        if (contentDisposition && contentDisposition.type === \"render\") {\n            this._renderbody = incomingRequestMessage.body;\n            this._rendertype = incomingRequestMessage.getHeader(\"Content-Type\");\n        }\n        // Identifier\n        this._id = incomingRequestMessage.callId + incomingRequestMessage.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        // Clear timers\n        if (this.expiresTimer) {\n            clearTimeout(this.expiresTimer);\n            this.expiresTimer = undefined;\n        }\n        if (this.userNoAnswerTimer) {\n            clearTimeout(this.userNoAnswerTimer);\n            this.userNoAnswerTimer = undefined;\n        }\n        // If accept() is still waiting for a PRACK, make sure it rejects\n        this.prackNeverArrived();\n        // If the final response for the initial INVITE not yet been sent, reject it\n        switch (this.state) {\n            case SessionState.Initial:\n                return this.reject().then(() => super.dispose());\n            case SessionState.Establishing:\n                return this.reject().then(() => super.dispose());\n            case SessionState.Established:\n                return super.dispose();\n            case SessionState.Terminating:\n                return super.dispose();\n            case SessionState.Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * If true, a first provisional response after the 100 Trying\n     * will be sent automatically. This is false it the UAC required\n     * reliable provisional responses (100rel in Require header) or\n     * the user agent configuration has specified to not send an\n     * initial response, otherwise it is true. The provisional is sent by\n     * calling `progress()` without any options.\n     */\n    get autoSendAnInitialProvisionalResponse() {\n        return this.rel100 !== \"required\" && this.userAgent.configuration.sendInitialProvisionalResponse;\n    }\n    /**\n     * Initial incoming INVITE request message body.\n     */\n    get body() {\n        return this.incomingInviteRequest.message.body;\n    }\n    /**\n     * The identity of the local user.\n     */\n    get localIdentity() {\n        return this.request.to;\n    }\n    /**\n     * The identity of the remote user.\n     */\n    get remoteIdentity() {\n        return this.request.from;\n    }\n    /**\n     * Initial incoming INVITE request message.\n     */\n    get request() {\n        return this.incomingInviteRequest.message;\n    }\n    /**\n     * Accept the invitation.\n     *\n     * @remarks\n     * Accept the incoming INVITE request to start a Session.\n     * Replies to the INVITE request with a 200 Ok response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * This method may reject for a variety of reasons including\n     * the receipt of a CANCEL request before `accept` is able\n     * to construct a response.\n     * @param options - Options bucket.\n     */\n    accept(options = {}) {\n        this.logger.log(\"Invitation.accept\");\n        // validate state\n        if (this.state !== SessionState.Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // transition state\n        this.stateTransition(SessionState.Establishing);\n        return (this.sendAccept(options)\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            .then(({ message, session }) => {\n            session.delegate = {\n                onAck: (ackRequest) => this.onAckRequest(ackRequest),\n                onAckTimeout: () => this.onAckTimeout(),\n                onBye: (byeRequest) => this.onByeRequest(byeRequest),\n                onInfo: (infoRequest) => this.onInfoRequest(infoRequest),\n                onInvite: (inviteRequest) => this.onInviteRequest(inviteRequest),\n                onMessage: (messageRequest) => this.onMessageRequest(messageRequest),\n                onNotify: (notifyRequest) => this.onNotifyRequest(notifyRequest),\n                onPrack: (prackRequest) => this.onPrackRequest(prackRequest),\n                onRefer: (referRequest) => this.onReferRequest(referRequest)\n            };\n            this._dialog = session;\n            this.stateTransition(SessionState.Established);\n            // TODO: Reconsider this \"automagic\" send of a BYE to replacee behavior.\n            // This behavior has been ported forward from legacy versions.\n            if (this._replacee) {\n                this._replacee._bye();\n            }\n        })\n            .catch((error) => this.handleResponseError(error)));\n    }\n    /**\n     * Indicate progress processing the invitation.\n     *\n     * @remarks\n     * Report progress to the the caller.\n     * Replies to the INVITE request with a 1xx provisional response.\n     * Resolves once the response sent, otherwise rejects.\n     * @param options - Options bucket.\n     */\n    progress(options = {}) {\n        this.logger.log(\"Invitation.progress\");\n        // validate state\n        if (this.state !== SessionState.Initial) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // Ported\n        const statusCode = options.statusCode || 180;\n        if (statusCode < 100 || statusCode > 199) {\n            throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // After the first reliable provisional response for a request has been\n        // acknowledged, the UAS MAY send additional reliable provisional\n        // responses.  The UAS MUST NOT send a second reliable provisional\n        // response until the first is acknowledged.  After the first, it is\n        // RECOMMENDED that the UAS not send an additional reliable provisional\n        // response until the previous is acknowledged.  The first reliable\n        // provisional response receives special treatment because it conveys\n        // the initial sequence number.  If additional reliable provisional\n        // responses were sent before the first was acknowledged, the UAS could\n        // not be certain these were received in order.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) {\n            this.logger.warn(\"Unexpected call for progress while waiting for prack, ignoring\");\n            return Promise.resolve();\n        }\n        // Trying provisional response\n        if (options.statusCode === 100) {\n            return this.sendProgressTrying()\n                .then(() => {\n                return;\n            })\n                .catch((error) => this.handleResponseError(error));\n        }\n        // Standard provisional response\n        if (!(this.rel100 === \"required\") &&\n            !(this.rel100 === \"supported\" && options.rel100) &&\n            !(this.rel100 === \"supported\" && this.userAgent.configuration.sipExtension100rel === SIPExtension.Required)) {\n            return this.sendProgress(options)\n                .then(() => {\n                return;\n            })\n                .catch((error) => this.handleResponseError(error));\n        }\n        // Reliable provisional response\n        return this.sendProgressReliableWaitForPrack(options)\n            .then(() => {\n            return;\n        })\n            .catch((error) => this.handleResponseError(error));\n    }\n    /**\n     * Reject the invitation.\n     *\n     * @remarks\n     * Replies to the INVITE request with a 4xx, 5xx, or 6xx final response.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * The expectation is that this method is used to reject an INVITE request.\n     * That is indeed the case - a call to `progress` followed by `reject` is\n     * a typical way to \"decline\" an incoming INVITE request. However it may\n     * also be called after calling `accept` (but only before it completes)\n     * which will reject the call and cause `accept` to reject.\n     * @param options - Options bucket.\n     */\n    reject(options = {}) {\n        this.logger.log(\"Invitation.reject\");\n        // validate state\n        if (this.state !== SessionState.Initial && this.state !== SessionState.Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        const statusCode = options.statusCode || 480;\n        const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : getReasonPhrase(statusCode);\n        const extraHeaders = options.extraHeaders || [];\n        if (statusCode < 300 || statusCode > 699) {\n            throw new TypeError(\"Invalid statusCode: \" + statusCode);\n        }\n        const body = options.body ? fromBodyLegacy(options.body) : undefined;\n        // FIXME: Need to redirect to someplace\n        statusCode < 400\n            ? this.incomingInviteRequest.redirect([], { statusCode, reasonPhrase, extraHeaders, body })\n            : this.incomingInviteRequest.reject({ statusCode, reasonPhrase, extraHeaders, body });\n        this.stateTransition(SessionState.Terminated);\n        return Promise.resolve();\n    }\n    /**\n     * Handle CANCEL request.\n     *\n     * @param message - CANCEL message.\n     * @internal\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    _onCancel(message) {\n        this.logger.log(\"Invitation._onCancel\");\n        // validate state\n        if (this.state !== SessionState.Initial && this.state !== SessionState.Establishing) {\n            this.logger.error(`CANCEL received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onCancel) {\n            const cancel = new Cancel(message);\n            this.delegate.onCancel(cancel);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // reject INVITE with 487 status code\n        this.incomingInviteRequest.reject({ statusCode: 487 });\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Helper function to handle offer/answer in a PRACK.\n     */\n    handlePrackOfferAnswer(request) {\n        if (!this.dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        // If the PRACK doesn't have an offer/answer, nothing to be done.\n        const body = getBody(request.message);\n        if (!body || body.contentDisposition !== \"session\") {\n            return Promise.resolve(undefined);\n        }\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        // If the UAC receives a reliable provisional response with an offer\n        // (this would occur if the UAC sent an INVITE without an offer, in\n        // which case the first reliable provisional response will contain the\n        // offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        // a reliable provisional response with an answer, it MAY generate an\n        // additional offer in the PRACK.  If the UAS receives a PRACK with an\n        // offer, it MUST place the answer in the 2xx to the PRACK.\n        // https://tools.ietf.org/html/rfc3262#section-5\n        switch (this.dialog.signalingState) {\n            case SignalingState.Initial:\n                // State should never be reached as first reliable provisional response must have answer/offer.\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case SignalingState.Stable:\n                // Receved answer.\n                return this.setAnswer(body, options).then(() => undefined);\n            case SignalingState.HaveLocalOffer:\n                // State should never be reached as local offer would be answered by this PRACK\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            case SignalingState.HaveRemoteOffer:\n                // Received offer, generate answer.\n                return this.setOfferAndGetAnswer(body, options);\n            case SignalingState.Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * A handler for errors which occur while attempting to send 1xx and 2xx responses.\n     * In all cases, an attempt is made to reject the request if it is still outstanding.\n     * And while there are a variety of things which can go wrong and we log something here\n     * for all errors, there are a handful of common exceptions we pay some extra attention to.\n     * @param error - The error which occurred.\n     */\n    handleResponseError(error) {\n        let statusCode = 480; // \"Temporarily Unavailable\"\n        // Log Error message\n        if (error instanceof Error) {\n            this.logger.error(error.message);\n        }\n        else {\n            // We don't actually know what a session description handler implementation might throw our way,\n            // and more generally as a last resort catch all, just assume we are getting an \"unknown\" and log it.\n            this.logger.error(error);\n        }\n        // Log Exception message\n        if (error instanceof ContentTypeUnsupportedError) {\n            this.logger.error(\"A session description handler occurred while sending response (content type unsupported\");\n            statusCode = 415; // \"Unsupported Media Type\"\n        }\n        else if (error instanceof SessionDescriptionHandlerError) {\n            this.logger.error(\"A session description handler occurred while sending response\");\n        }\n        else if (error instanceof SessionTerminatedError) {\n            this.logger.error(\"Session ended before response could be formulated and sent (while waiting for PRACK)\");\n        }\n        else if (error instanceof TransactionStateError) {\n            this.logger.error(\"Session changed state before response could be formulated and sent\");\n        }\n        // Reject if still in \"initial\" or \"establishing\" state.\n        if (this.state === SessionState.Initial || this.state === SessionState.Establishing) {\n            try {\n                this.incomingInviteRequest.reject({ statusCode });\n                this.stateTransition(SessionState.Terminated);\n            }\n            catch (e) {\n                this.logger.error(\"An error occurred attempting to reject the request while handling another error\");\n                throw e; // This is not a good place to be...\n            }\n        }\n        // FIXME: TODO:\n        // Here we are squelching the throwing of errors due to an race condition.\n        // We have an internal race between calling `accept()` and handling an incoming\n        // CANCEL request. As there is no good way currently to delegate the handling of\n        // these race errors to the caller of `accept()`, we are squelching the throwing\n        // of ALL errors when/if they occur after receiving a CANCEL to catch the ONE we know\n        // is a \"normal\" exceptional condition. While this is a completely reasonable approach,\n        // the decision should be left up to the library user. Furthermore, as we are eating\n        // ALL errors in this case, we are potentially (likely) hiding \"real\" errors which occur.\n        //\n        // Only rethrow error if the session has not been canceled.\n        if (this.isCanceled) {\n            this.logger.warn(\"An error occurred while attempting to formulate and send a response to an incoming INVITE.\" +\n                \" However a CANCEL was received and processed while doing so which can (and often does) result\" +\n                \" in errors occurring as the session terminates in the meantime. Said error is being ignored.\");\n            return;\n        }\n        throw error;\n    }\n    /**\n     * Callback for when ACK for a 2xx response is never received.\n     * @param session - Session the ACK never arrived for.\n     */\n    onAckTimeout() {\n        this.logger.log(\"Invitation.onAckTimeout\");\n        if (!this.dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        this.logger.log(\"No ACK received for an extended period of time, terminating session\");\n        this.dialog.bye();\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * A version of `accept` which resolves a session when the 200 Ok response is sent.\n     * @param options - Options bucket.\n     */\n    sendAccept(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const extraHeaders = options.extraHeaders || [];\n        // The UAS MAY send a final response to the initial request before\n        // having received PRACKs for all unacknowledged reliable provisional\n        // responses, unless the final response is 2xx and any of the\n        // unacknowledged reliable provisional responses contained a session\n        // description.  In that case, it MUST NOT send a final response until\n        // those provisional responses are acknowledged.  If the UAS does send a\n        // final response when reliable responses are still unacknowledged, it\n        // SHOULD NOT continue to retransmit the unacknowledged reliable\n        // provisional responses, but it MUST be prepared to process PRACK\n        // requests for those outstanding responses.  A UAS MUST NOT send new\n        // reliable provisional responses (as opposed to retransmissions of\n        // unacknowledged ones) after sending a final response to a request.\n        // https://tools.ietf.org/html/rfc3262#section-3\n        if (this.waitingForPrack) {\n            return this.waitForArrivalOfPrack()\n                .then(() => clearTimeout(this.userNoAnswerTimer)) // Ported\n                .then(() => this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions))\n                .then((body) => this.incomingInviteRequest.accept({ statusCode: 200, body, extraHeaders }));\n        }\n        clearTimeout(this.userNoAnswerTimer); // Ported\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions).then((body) => this.incomingInviteRequest.accept({ statusCode: 200, body, extraHeaders }));\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response is sent.\n     * @param options - Options bucket.\n     */\n    sendProgress(options = {}) {\n        const statusCode = options.statusCode || 180;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const body = options.body ? fromBodyLegacy(options.body) : undefined;\n        // The 183 (Session Progress) response is used to convey information\n        // about the progress of the call that is not otherwise classified.  The\n        // Reason-Phrase, header fields, or message body MAY be used to convey\n        // more details about the call progress.\n        // https://tools.ietf.org/html/rfc3261#section-21.1.5\n        // It is the de facto industry standard to utilize 183 with SDP to provide \"early media\".\n        // While it is unlikely someone would want to send a 183 without SDP, so it should be an option.\n        if (statusCode === 183 && !body) {\n            return this.sendProgressWithSDP(options);\n        }\n        try {\n            const progressResponse = this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body });\n            this._dialog = progressResponse.session;\n            return Promise.resolve(progressResponse);\n        }\n        catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * A version of `progress` which resolves when the provisional response with sdp is sent.\n     * @param options - Options bucket.\n     */\n    sendProgressWithSDP(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Get an offer/answer and send a reply.\n        return this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions)\n            .then((body) => this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body }))\n            .then((progressResponse) => {\n            this._dialog = progressResponse.session;\n            return progressResponse;\n        });\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is sent.\n     * @param options - Options bucket.\n     */\n    sendProgressReliable(options = {}) {\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(\"Require: 100rel\");\n        options.extraHeaders.push(\"RSeq: \" + Math.floor(Math.random() * 10000));\n        return this.sendProgressWithSDP(options);\n    }\n    /**\n     * A version of `progress` which resolves when the reliable provisional response is acknowledged.\n     * @param options - Options bucket.\n     */\n    sendProgressReliableWaitForPrack(options = {}) {\n        const responseOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers\n        };\n        const statusCode = options.statusCode || 183;\n        const reasonPhrase = options.reasonPhrase;\n        const extraHeaders = (options.extraHeaders || []).slice();\n        extraHeaders.push(\"Require: 100rel\");\n        extraHeaders.push(\"RSeq: \" + this.rseq++);\n        let body;\n        return new Promise((resolve, reject) => {\n            this.waitingForPrack = true;\n            this.generateResponseOfferAnswer(this.incomingInviteRequest, responseOptions)\n                .then((offerAnswer) => {\n                body = offerAnswer;\n                return this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body });\n            })\n                .then((progressResponse) => {\n                this._dialog = progressResponse.session;\n                let prackRequest;\n                let prackResponse;\n                progressResponse.session.delegate = {\n                    onPrack: (request) => {\n                        prackRequest = request;\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(prackWaitTimeoutTimer);\n                        // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                        clearTimeout(rel1xxRetransmissionTimer);\n                        if (!this.waitingForPrack) {\n                            return;\n                        }\n                        this.waitingForPrack = false;\n                        this.handlePrackOfferAnswer(prackRequest)\n                            .then((prackResponseBody) => {\n                            try {\n                                prackResponse = prackRequest.accept({ statusCode: 200, body: prackResponseBody });\n                                this.prackArrived();\n                                resolve({ prackRequest, prackResponse, progressResponse });\n                            }\n                            catch (error) {\n                                reject(error);\n                            }\n                        })\n                            .catch((error) => reject(error));\n                    }\n                };\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const prackWaitTimeout = () => {\n                    if (!this.waitingForPrack) {\n                        return;\n                    }\n                    this.waitingForPrack = false;\n                    this.logger.warn(\"No PRACK received, rejecting INVITE.\");\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    clearTimeout(rel1xxRetransmissionTimer);\n                    this.reject({ statusCode: 504 })\n                        .then(() => reject(new SessionTerminatedError()))\n                        .catch((error) => reject(error));\n                };\n                const prackWaitTimeoutTimer = setTimeout(prackWaitTimeout, Timers.T1 * 64);\n                // https://tools.ietf.org/html/rfc3262#section-3\n                const rel1xxRetransmission = () => {\n                    try {\n                        this.incomingInviteRequest.progress({ statusCode, reasonPhrase, extraHeaders, body });\n                    }\n                    catch (error) {\n                        this.waitingForPrack = false;\n                        reject(error);\n                        return;\n                    }\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, (timeout *= 2));\n                };\n                let timeout = Timers.T1;\n                let rel1xxRetransmissionTimer = setTimeout(rel1xxRetransmission, timeout);\n            })\n                .catch((error) => {\n                this.waitingForPrack = false;\n                reject(error);\n            });\n        });\n    }\n    /**\n     * A version of `progress` which resolves when a 100 Trying provisional response is sent.\n     */\n    sendProgressTrying() {\n        try {\n            const progressResponse = this.incomingInviteRequest.trying();\n            return Promise.resolve(progressResponse);\n        }\n        catch (error) {\n            return Promise.reject(error);\n        }\n    }\n    /**\n     * When attempting to accept the INVITE, an invitation waits\n     * for any outstanding PRACK to arrive before sending the 200 Ok.\n     * It will be waiting on this Promise to resolve which lets it know\n     * the PRACK has arrived and it may proceed to send the 200 Ok.\n     */\n    waitForArrivalOfPrack() {\n        if (this.waitingForPrackPromise) {\n            throw new Error(\"Already waiting for PRACK\");\n        }\n        this.waitingForPrackPromise = new Promise((resolve, reject) => {\n            this.waitingForPrackResolve = resolve;\n            this.waitingForPrackReject = reject;\n        });\n        return this.waitingForPrackPromise;\n    }\n    /**\n     * Here we are resolving the promise which in turn will cause\n     * the accept to proceed (it may still fail for other reasons, but...).\n     */\n    prackArrived() {\n        if (this.waitingForPrackResolve) {\n            this.waitingForPrackResolve();\n        }\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n    /**\n     * Here we are rejecting the promise which in turn will cause\n     * the accept to fail and the session to transition to \"terminated\".\n     */\n    prackNeverArrived() {\n        if (this.waitingForPrackReject) {\n            this.waitingForPrackReject(new SessionTerminatedError());\n        }\n        this.waitingForPrackPromise = undefined;\n        this.waitingForPrackResolve = undefined;\n        this.waitingForPrackReject = undefined;\n    }\n}\n","/* eslint-disable @typescript-eslint/no-namespace */\n/* eslint-disable no-inner-declarations */\nimport * as pegGrammar from \"./pegjs/dist/grammar.js\";\n/**\n * Grammar.\n * @internal\n */\nexport var Grammar;\n(function (Grammar) {\n    /**\n     * Parse.\n     * @param input -\n     * @param startRule -\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function parse(input, startRule) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const options = { startRule };\n        try {\n            pegGrammar.parse(input, options);\n        }\n        catch (e) {\n            options.data = -1;\n        }\n        return options.data;\n    }\n    Grammar.parse = parse;\n    /**\n     * Parse the given string and returns a SIP.NameAddrHeader instance or undefined if\n     * it is an invalid NameAddrHeader.\n     * @param name_addr_header -\n     */\n    function nameAddrHeaderParse(nameAddrHeader) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedNameAddrHeader = Grammar.parse(nameAddrHeader, \"Name_Addr_Header\");\n        return parsedNameAddrHeader !== -1 ? parsedNameAddrHeader : undefined;\n    }\n    Grammar.nameAddrHeaderParse = nameAddrHeaderParse;\n    /**\n     * Parse the given string and returns a SIP.URI instance or undefined if\n     * it is an invalid URI.\n     * @param uri -\n     */\n    function URIParse(uri) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const parsedUri = Grammar.parse(uri, \"SIP_URI\");\n        return parsedUri !== -1 ? parsedUri : undefined;\n    }\n    Grammar.URIParse = URIParse;\n})(Grammar = Grammar || (Grammar = {}));\n","import { NameAddrHeader } from \"../../name-addr-header.js\";\nimport { URI } from \"../../uri.js\";\nfunction peg$padEnd(str, targetLength, padString) {\n    padString = padString || ' ';\n    if (str.length > targetLength) {\n        return str;\n    }\n    targetLength -= str.length;\n    padString += padString.repeat(targetLength);\n    return str + padString.slice(0, targetLength);\n}\nexport class SyntaxError extends Error {\n    constructor(message, expected, found, location) {\n        super();\n        this.message = message;\n        this.expected = expected;\n        this.found = found;\n        this.location = location;\n        this.name = \"SyntaxError\";\n        if (typeof Object.setPrototypeOf === \"function\") {\n            Object.setPrototypeOf(this, SyntaxError.prototype);\n        }\n        else {\n            this.__proto__ = SyntaxError.prototype;\n        }\n        if (typeof Error.captureStackTrace === \"function\") {\n            Error.captureStackTrace(this, SyntaxError);\n        }\n    }\n    static buildMessage(expected, found) {\n        function hex(ch) {\n            return ch.charCodeAt(0).toString(16).toUpperCase();\n        }\n        function literalEscape(s) {\n            return s\n                .replace(/\\\\/g, \"\\\\\\\\\")\n                .replace(/\"/g, \"\\\\\\\"\")\n                .replace(/\\0/g, \"\\\\0\")\n                .replace(/\\t/g, \"\\\\t\")\n                .replace(/\\n/g, \"\\\\n\")\n                .replace(/\\r/g, \"\\\\r\")\n                .replace(/[\\x00-\\x0F]/g, (ch) => \"\\\\x0\" + hex(ch))\n                .replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch) => \"\\\\x\" + hex(ch));\n        }\n        function classEscape(s) {\n            return s\n                .replace(/\\\\/g, \"\\\\\\\\\")\n                .replace(/\\]/g, \"\\\\]\")\n                .replace(/\\^/g, \"\\\\^\")\n                .replace(/-/g, \"\\\\-\")\n                .replace(/\\0/g, \"\\\\0\")\n                .replace(/\\t/g, \"\\\\t\")\n                .replace(/\\n/g, \"\\\\n\")\n                .replace(/\\r/g, \"\\\\r\")\n                .replace(/[\\x00-\\x0F]/g, (ch) => \"\\\\x0\" + hex(ch))\n                .replace(/[\\x10-\\x1F\\x7F-\\x9F]/g, (ch) => \"\\\\x\" + hex(ch));\n        }\n        function describeExpectation(expectation) {\n            switch (expectation.type) {\n                case \"literal\":\n                    return \"\\\"\" + literalEscape(expectation.text) + \"\\\"\";\n                case \"class\":\n                    const escapedParts = expectation.parts.map((part) => {\n                        return Array.isArray(part)\n                            ? classEscape(part[0]) + \"-\" + classEscape(part[1])\n                            : classEscape(part);\n                    });\n                    return \"[\" + (expectation.inverted ? \"^\" : \"\") + escapedParts + \"]\";\n                case \"any\":\n                    return \"any character\";\n                case \"end\":\n                    return \"end of input\";\n                case \"other\":\n                    return expectation.description;\n            }\n        }\n        function describeExpected(expected1) {\n            const descriptions = expected1.map(describeExpectation);\n            let i;\n            let j;\n            descriptions.sort();\n            if (descriptions.length > 0) {\n                for (i = 1, j = 1; i < descriptions.length; i++) {\n                    if (descriptions[i - 1] !== descriptions[i]) {\n                        descriptions[j] = descriptions[i];\n                        j++;\n                    }\n                }\n                descriptions.length = j;\n            }\n            switch (descriptions.length) {\n                case 1:\n                    return descriptions[0];\n                case 2:\n                    return descriptions[0] + \" or \" + descriptions[1];\n                default:\n                    return descriptions.slice(0, -1).join(\", \")\n                        + \", or \"\n                        + descriptions[descriptions.length - 1];\n            }\n        }\n        function describeFound(found1) {\n            return found1 ? \"\\\"\" + literalEscape(found1) + \"\\\"\" : \"end of input\";\n        }\n        return \"Expected \" + describeExpected(expected) + \" but \" + describeFound(found) + \" found.\";\n    }\n    format(sources) {\n        let str = 'Error: ' + this.message;\n        if (this.location) {\n            let src = null;\n            let k;\n            for (k = 0; k < sources.length; k++) {\n                if (sources[k].source === this.location.source) {\n                    src = sources[k].text.split(/\\r\\n|\\n|\\r/g);\n                    break;\n                }\n            }\n            let s = this.location.start;\n            let loc = this.location.source + ':' + s.line + ':' + s.column;\n            if (src) {\n                let e = this.location.end;\n                let filler = peg$padEnd('', s.line.toString().length, ' ');\n                let line = src[s.line - 1];\n                let last = s.line === e.line ? e.column : line.length + 1;\n                str += '\\n --> ' + loc + '\\n' + filler + ' |\\n' + s.line + ' | ' + line + '\\n' + filler + ' | ' +\n                    peg$padEnd('', s.column - 1, ' ') +\n                    peg$padEnd('', last - s.column, '^');\n            }\n            else {\n                str += '\\n at ' + loc;\n            }\n        }\n        return str;\n    }\n}\nfunction peg$parse(input, options) {\n    options = options !== undefined ? options : {};\n    const peg$FAILED = {};\n    const peg$source = options.grammarSource;\n    const peg$startRuleIndices = { Contact: 119, Name_Addr_Header: 156, Record_Route: 176, Request_Response: 81, SIP_URI: 45, Subscription_State: 186, Supported: 191, Require: 182, Via: 194, absoluteURI: 84, Call_ID: 118, Content_Disposition: 130, Content_Length: 135, Content_Type: 136, CSeq: 146, displayName: 122, Event: 149, From: 151, host: 52, Max_Forwards: 154, Min_SE: 213, Proxy_Authenticate: 157, quoted_string: 40, Refer_To: 178, Replaces: 179, Session_Expires: 210, stun_URI: 217, To: 192, turn_URI: 223, uuid: 226, WWW_Authenticate: 209, challenge: 158, sipfrag: 230, Referred_By: 231 };\n    let peg$startRuleIndex = 119;\n    const peg$consts = [\n        \"\\r\\n\",\n        peg$literalExpectation(\"\\r\\n\", false),\n        /^[0-9]/,\n        peg$classExpectation([[\"0\", \"9\"]], false, false),\n        /^[a-zA-Z]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"]], false, false),\n        /^[0-9a-fA-F]/,\n        peg$classExpectation([[\"0\", \"9\"], [\"a\", \"f\"], [\"A\", \"F\"]], false, false),\n        /^[\\0-\\xFF]/,\n        peg$classExpectation([[\"\\0\", \"\\xFF\"]], false, false),\n        /^[\"]/,\n        peg$classExpectation([\"\\\"\"], false, false),\n        \" \",\n        peg$literalExpectation(\" \", false),\n        \"\\t\",\n        peg$literalExpectation(\"\\t\", false),\n        /^[a-zA-Z0-9]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"], [\"0\", \"9\"]], false, false),\n        \";\",\n        peg$literalExpectation(\";\", false),\n        \"/\",\n        peg$literalExpectation(\"/\", false),\n        \"?\",\n        peg$literalExpectation(\"?\", false),\n        \":\",\n        peg$literalExpectation(\":\", false),\n        \"@\",\n        peg$literalExpectation(\"@\", false),\n        \"&\",\n        peg$literalExpectation(\"&\", false),\n        \"=\",\n        peg$literalExpectation(\"=\", false),\n        \"+\",\n        peg$literalExpectation(\"+\", false),\n        \"$\",\n        peg$literalExpectation(\"$\", false),\n        \",\",\n        peg$literalExpectation(\",\", false),\n        \"-\",\n        peg$literalExpectation(\"-\", false),\n        \"_\",\n        peg$literalExpectation(\"_\", false),\n        \".\",\n        peg$literalExpectation(\".\", false),\n        \"!\",\n        peg$literalExpectation(\"!\", false),\n        \"~\",\n        peg$literalExpectation(\"~\", false),\n        \"*\",\n        peg$literalExpectation(\"*\", false),\n        \"'\",\n        peg$literalExpectation(\"'\", false),\n        \"(\",\n        peg$literalExpectation(\"(\", false),\n        \")\",\n        peg$literalExpectation(\")\", false),\n        \"%\",\n        peg$literalExpectation(\"%\", false),\n        function () { return \" \"; },\n        function () { return ':'; },\n        /^[!-~]/,\n        peg$classExpectation([[\"!\", \"~\"]], false, false),\n        /^[\\x80-\\uFFFF]/,\n        peg$classExpectation([[\"\\x80\", \"\\uFFFF\"]], false, false),\n        /^[\\x80-\\xBF]/,\n        peg$classExpectation([[\"\\x80\", \"\\xBF\"]], false, false),\n        /^[a-f]/,\n        peg$classExpectation([[\"a\", \"f\"]], false, false),\n        \"`\",\n        peg$literalExpectation(\"`\", false),\n        \"<\",\n        peg$literalExpectation(\"<\", false),\n        \">\",\n        peg$literalExpectation(\">\", false),\n        \"\\\\\",\n        peg$literalExpectation(\"\\\\\", false),\n        \"[\",\n        peg$literalExpectation(\"[\", false),\n        \"]\",\n        peg$literalExpectation(\"]\", false),\n        \"{\",\n        peg$literalExpectation(\"{\", false),\n        \"}\",\n        peg$literalExpectation(\"}\", false),\n        function () { return \"*\"; },\n        function () { return \"/\"; },\n        function () { return \"=\"; },\n        function () { return \"(\"; },\n        function () { return \")\"; },\n        function () { return \">\"; },\n        function () { return \"<\"; },\n        function () { return \",\"; },\n        function () { return \";\"; },\n        function () { return \":\"; },\n        function () { return \"\\\"\"; },\n        /^[!-']/,\n        peg$classExpectation([[\"!\", \"'\"]], false, false),\n        /^[*-[]/,\n        peg$classExpectation([[\"*\", \"[\"]], false, false),\n        /^[\\]-~]/,\n        peg$classExpectation([[\"]\", \"~\"]], false, false),\n        function (contents) {\n            return contents;\n        },\n        /^[#-[]/,\n        peg$classExpectation([[\"#\", \"[\"]], false, false),\n        /^[\\0-\\t]/,\n        peg$classExpectation([[\"\\0\", \"\\t\"]], false, false),\n        /^[\\v-\\f]/,\n        peg$classExpectation([[\"\\v\", \"\\f\"]], false, false),\n        /^[\\x0E-\\x7F]/,\n        peg$classExpectation([[\"\\x0E\", \"\\x7F\"]], false, false),\n        function () {\n            options = options || { data: {} };\n            options.data.uri = new URI(options.data.scheme, options.data.user, options.data.host, options.data.port);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.uri = new URI(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n            delete options.data.scheme;\n            delete options.data.user;\n            delete options.data.host;\n            delete options.data.host_type;\n            delete options.data.port;\n            delete options.data.uri_params;\n            if (options.startRule === 'SIP_URI') {\n                options.data = options.data.uri;\n            }\n        },\n        \"sips\",\n        peg$literalExpectation(\"sips\", true),\n        \"sip\",\n        peg$literalExpectation(\"sip\", true),\n        function (uri_scheme) {\n            options = options || { data: {} };\n            options.data.scheme = uri_scheme;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.user = decodeURIComponent(text().slice(0, -1));\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.password = text();\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host = text();\n            return options.data.host;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'domain';\n            return text();\n        },\n        /^[a-zA-Z0-9_\\-]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"], [\"0\", \"9\"], \"_\", \"-\"], false, false),\n        /^[a-zA-Z0-9\\-]/,\n        peg$classExpectation([[\"a\", \"z\"], [\"A\", \"Z\"], [\"0\", \"9\"], \"-\"], false, false),\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'IPv6';\n            return text();\n        },\n        \"::\",\n        peg$literalExpectation(\"::\", false),\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'IPv6';\n            return text();\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host_type = 'IPv4';\n            return text();\n        },\n        \"25\",\n        peg$literalExpectation(\"25\", false),\n        /^[0-5]/,\n        peg$classExpectation([[\"0\", \"5\"]], false, false),\n        \"2\",\n        peg$literalExpectation(\"2\", false),\n        /^[0-4]/,\n        peg$classExpectation([[\"0\", \"4\"]], false, false),\n        \"1\",\n        peg$literalExpectation(\"1\", false),\n        /^[1-9]/,\n        peg$classExpectation([[\"1\", \"9\"]], false, false),\n        function (port) {\n            options = options || { data: {} };\n            port = parseInt(port.join(''));\n            options.data.port = port;\n            return port;\n        },\n        \"transport=\",\n        peg$literalExpectation(\"transport=\", true),\n        \"udp\",\n        peg$literalExpectation(\"udp\", true),\n        \"tcp\",\n        peg$literalExpectation(\"tcp\", true),\n        \"sctp\",\n        peg$literalExpectation(\"sctp\", true),\n        \"tls\",\n        peg$literalExpectation(\"tls\", true),\n        function (transport) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['transport'] = transport.toLowerCase();\n        },\n        \"user=\",\n        peg$literalExpectation(\"user=\", true),\n        \"phone\",\n        peg$literalExpectation(\"phone\", true),\n        \"ip\",\n        peg$literalExpectation(\"ip\", true),\n        function (user) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['user'] = user.toLowerCase();\n        },\n        \"method=\",\n        peg$literalExpectation(\"method=\", true),\n        function (method) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['method'] = method;\n        },\n        \"ttl=\",\n        peg$literalExpectation(\"ttl=\", true),\n        function (ttl) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            options.data.params['ttl'] = ttl;\n        },\n        \"maddr=\",\n        peg$literalExpectation(\"maddr=\", true),\n        function (maddr) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['maddr'] = maddr;\n        },\n        \"lr\",\n        peg$literalExpectation(\"lr\", true),\n        function () {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            options.data.uri_params['lr'] = undefined;\n        },\n        function (param, value) {\n            options = options || { data: {} };\n            if (!options.data.uri_params)\n                options.data.uri_params = {};\n            if (value === null) {\n                value = undefined;\n            }\n            else {\n                value = value[1];\n            }\n            options.data.uri_params[param.toLowerCase()] = value;\n        },\n        function (hname, hvalue) {\n            hname = hname.join('').toLowerCase();\n            hvalue = hvalue.join('');\n            options = options || { data: {} };\n            if (!options.data.uri_headers)\n                options.data.uri_headers = {};\n            if (!options.data.uri_headers[hname]) {\n                options.data.uri_headers[hname] = [hvalue];\n            }\n            else {\n                options.data.uri_headers[hname].push(hvalue);\n            }\n        },\n        function () {\n            options = options || { data: {} };\n            // lots of tests fail if this isn't guarded...\n            if (options.startRule === 'Refer_To') {\n                options.data.uri = new URI(options.data.scheme, options.data.user, options.data.host, options.data.port, options.data.uri_params, options.data.uri_headers);\n                delete options.data.scheme;\n                delete options.data.user;\n                delete options.data.host;\n                delete options.data.host_type;\n                delete options.data.port;\n                delete options.data.uri_params;\n            }\n        },\n        \"//\",\n        peg$literalExpectation(\"//\", false),\n        function () {\n            options = options || { data: {} };\n            options.data.scheme = text();\n        },\n        peg$literalExpectation(\"SIP\", true),\n        function () {\n            options = options || { data: {} };\n            options.data.sip_version = text();\n        },\n        \"INVITE\",\n        peg$literalExpectation(\"INVITE\", false),\n        \"ACK\",\n        peg$literalExpectation(\"ACK\", false),\n        \"VXACH\",\n        peg$literalExpectation(\"VXACH\", false),\n        \"OPTIONS\",\n        peg$literalExpectation(\"OPTIONS\", false),\n        \"BYE\",\n        peg$literalExpectation(\"BYE\", false),\n        \"CANCEL\",\n        peg$literalExpectation(\"CANCEL\", false),\n        \"REGISTER\",\n        peg$literalExpectation(\"REGISTER\", false),\n        \"SUBSCRIBE\",\n        peg$literalExpectation(\"SUBSCRIBE\", false),\n        \"NOTIFY\",\n        peg$literalExpectation(\"NOTIFY\", false),\n        \"REFER\",\n        peg$literalExpectation(\"REFER\", false),\n        \"PUBLISH\",\n        peg$literalExpectation(\"PUBLISH\", false),\n        function () {\n            options = options || { data: {} };\n            options.data.method = text();\n            return options.data.method;\n        },\n        function (status_code) {\n            options = options || { data: {} };\n            options.data.status_code = parseInt(status_code.join(''));\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.reason_phrase = text();\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = text();\n        },\n        function () {\n            var idx, length;\n            options = options || { data: {} };\n            length = options.data.multi_header.length;\n            for (idx = 0; idx < length; idx++) {\n                if (options.data.multi_header[idx].parsed === null) {\n                    options.data = null;\n                    break;\n                }\n            }\n            if (options.data !== null) {\n                options.data = options.data.multi_header;\n            }\n            else {\n                options.data = -1;\n            }\n        },\n        function () {\n            var header;\n            options = options || { data: {} };\n            if (!options.data.multi_header)\n                options.data.multi_header = [];\n            try {\n                header = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            }\n            catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({ 'position': peg$currPos,\n                'offset': location().start.offset,\n                'parsed': header\n            });\n        },\n        function (displayName) {\n            displayName = text().trim();\n            if (displayName[0] === '\\\"') {\n                displayName = displayName.substring(1, displayName.length - 1);\n            }\n            options = options || { data: {} };\n            options.data.displayName = displayName;\n        },\n        \"q\",\n        peg$literalExpectation(\"q\", true),\n        function (q) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            options.data.params['q'] = q;\n        },\n        \"expires\",\n        peg$literalExpectation(\"expires\", true),\n        function (expires) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            options.data.params['expires'] = expires;\n        },\n        function (delta_seconds) {\n            return parseInt(delta_seconds.join(''));\n        },\n        \"0\",\n        peg$literalExpectation(\"0\", false),\n        function () {\n            return parseFloat(text());\n        },\n        function (param, value) {\n            options = options || { data: {} };\n            if (!options.data.params)\n                options.data.params = {};\n            if (value === null) {\n                value = undefined;\n            }\n            else {\n                value = value[1];\n            }\n            options.data.params[param.toLowerCase()] = value;\n        },\n        \"render\",\n        peg$literalExpectation(\"render\", true),\n        \"session\",\n        peg$literalExpectation(\"session\", true),\n        \"icon\",\n        peg$literalExpectation(\"icon\", true),\n        \"alert\",\n        peg$literalExpectation(\"alert\", true),\n        function () {\n            options = options || { data: {} };\n            if (options.startRule === 'Content_Disposition') {\n                options.data.type = text().toLowerCase();\n            }\n        },\n        \"handling\",\n        peg$literalExpectation(\"handling\", true),\n        \"optional\",\n        peg$literalExpectation(\"optional\", true),\n        \"required\",\n        peg$literalExpectation(\"required\", true),\n        function (length) {\n            options = options || { data: {} };\n            options.data = parseInt(length.join(''));\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = text();\n        },\n        \"text\",\n        peg$literalExpectation(\"text\", true),\n        \"image\",\n        peg$literalExpectation(\"image\", true),\n        \"audio\",\n        peg$literalExpectation(\"audio\", true),\n        \"video\",\n        peg$literalExpectation(\"video\", true),\n        \"application\",\n        peg$literalExpectation(\"application\", true),\n        \"message\",\n        peg$literalExpectation(\"message\", true),\n        \"multipart\",\n        peg$literalExpectation(\"multipart\", true),\n        \"x-\",\n        peg$literalExpectation(\"x-\", true),\n        function (cseq_value) {\n            options = options || { data: {} };\n            options.data.value = parseInt(cseq_value.join(''));\n        },\n        function (expires) { options = options || { data: {} }; options.data = expires; },\n        function (event_type) {\n            options = options || { data: {} };\n            options.data.event = event_type.toLowerCase();\n        },\n        function () {\n            options = options || { data: {} };\n            var tag = options.data.tag;\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) {\n                options.data.setParam('tag', tag);\n            }\n        },\n        \"tag\",\n        peg$literalExpectation(\"tag\", true),\n        function (tag) { options = options || { data: {} }; options.data.tag = tag; },\n        function (forwards) {\n            options = options || { data: {} };\n            options.data = parseInt(forwards.join(''));\n        },\n        function (min_expires) { options = options || { data: {} }; options.data = min_expires; },\n        function () {\n            options = options || { data: {} };\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n        },\n        \"digest\",\n        peg$literalExpectation(\"Digest\", true),\n        \"realm\",\n        peg$literalExpectation(\"realm\", true),\n        function (realm) { options = options || { data: {} }; options.data.realm = realm; },\n        \"domain\",\n        peg$literalExpectation(\"domain\", true),\n        \"nonce\",\n        peg$literalExpectation(\"nonce\", true),\n        function (nonce) { options = options || { data: {} }; options.data.nonce = nonce; },\n        \"opaque\",\n        peg$literalExpectation(\"opaque\", true),\n        function (opaque) { options = options || { data: {} }; options.data.opaque = opaque; },\n        \"stale\",\n        peg$literalExpectation(\"stale\", true),\n        \"true\",\n        peg$literalExpectation(\"true\", true),\n        function () { options = options || { data: {} }; options.data.stale = true; },\n        \"false\",\n        peg$literalExpectation(\"false\", true),\n        function () { options = options || { data: {} }; options.data.stale = false; },\n        \"algorithm\",\n        peg$literalExpectation(\"algorithm\", true),\n        \"md5\",\n        peg$literalExpectation(\"MD5\", true),\n        \"md5-sess\",\n        peg$literalExpectation(\"MD5-sess\", true),\n        function (algorithm) {\n            options = options || { data: {} };\n            options.data.algorithm = algorithm.toUpperCase();\n        },\n        \"qop\",\n        peg$literalExpectation(\"qop\", true),\n        \"auth-int\",\n        peg$literalExpectation(\"auth-int\", true),\n        \"auth\",\n        peg$literalExpectation(\"auth\", true),\n        function (qop_value) {\n            options = options || { data: {} };\n            options.data.qop || (options.data.qop = []);\n            options.data.qop.push(qop_value.toLowerCase());\n        },\n        function (rack_value) {\n            options = options || { data: {} };\n            options.data.value = parseInt(rack_value.join(''));\n        },\n        function () {\n            var idx, length;\n            options = options || { data: {} };\n            length = options.data.multi_header.length;\n            for (idx = 0; idx < length; idx++) {\n                if (options.data.multi_header[idx].parsed === null) {\n                    options.data = null;\n                    break;\n                }\n            }\n            if (options.data !== null) {\n                options.data = options.data.multi_header;\n            }\n            else {\n                options.data = -1;\n            }\n        },\n        function () {\n            var header;\n            options = options || { data: {} };\n            if (!options.data.multi_header)\n                options.data.multi_header = [];\n            try {\n                header = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n                delete options.data.uri;\n                delete options.data.displayName;\n                delete options.data.params;\n            }\n            catch (e) {\n                header = null;\n            }\n            options.data.multi_header.push({ 'position': peg$currPos,\n                'offset': location().start.offset,\n                'parsed': header\n            });\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n        },\n        function () {\n            options = options || { data: {} };\n            if (!(options.data.replaces_from_tag && options.data.replaces_to_tag)) {\n                options.data = -1;\n            }\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = {\n                call_id: options.data\n            };\n        },\n        \"from-tag\",\n        peg$literalExpectation(\"from-tag\", true),\n        function (from_tag) {\n            options = options || { data: {} };\n            options.data.replaces_from_tag = from_tag;\n        },\n        \"to-tag\",\n        peg$literalExpectation(\"to-tag\", true),\n        function (to_tag) {\n            options = options || { data: {} };\n            options.data.replaces_to_tag = to_tag;\n        },\n        \"early-only\",\n        peg$literalExpectation(\"early-only\", true),\n        function () {\n            options = options || { data: {} };\n            options.data.early_only = true;\n        },\n        function (head, r) { return r; },\n        function (head, tail) { return list(head, tail); },\n        function (value) {\n            options = options || { data: {} };\n            if (options.startRule === 'Require') {\n                options.data = value || [];\n            }\n        },\n        function (rseq_value) {\n            options = options || { data: {} };\n            options.data.value = parseInt(rseq_value.join(''));\n        },\n        \"active\",\n        peg$literalExpectation(\"active\", true),\n        \"pending\",\n        peg$literalExpectation(\"pending\", true),\n        \"terminated\",\n        peg$literalExpectation(\"terminated\", true),\n        function () {\n            options = options || { data: {} };\n            options.data.state = text();\n        },\n        \"reason\",\n        peg$literalExpectation(\"reason\", true),\n        function (reason) {\n            options = options || { data: {} };\n            if (typeof reason !== 'undefined')\n                options.data.reason = reason;\n        },\n        function (expires) {\n            options = options || { data: {} };\n            if (typeof expires !== 'undefined')\n                options.data.expires = expires;\n        },\n        \"retry_after\",\n        peg$literalExpectation(\"retry_after\", true),\n        function (retry_after) {\n            options = options || { data: {} };\n            if (typeof retry_after !== 'undefined')\n                options.data.retry_after = retry_after;\n        },\n        \"deactivated\",\n        peg$literalExpectation(\"deactivated\", true),\n        \"probation\",\n        peg$literalExpectation(\"probation\", true),\n        \"rejected\",\n        peg$literalExpectation(\"rejected\", true),\n        \"timeout\",\n        peg$literalExpectation(\"timeout\", true),\n        \"giveup\",\n        peg$literalExpectation(\"giveup\", true),\n        \"noresource\",\n        peg$literalExpectation(\"noresource\", true),\n        \"invariant\",\n        peg$literalExpectation(\"invariant\", true),\n        function (value) {\n            options = options || { data: {} };\n            if (options.startRule === 'Supported') {\n                options.data = value || [];\n            }\n        },\n        function () {\n            options = options || { data: {} };\n            var tag = options.data.tag;\n            options.data = new NameAddrHeader(options.data.uri, options.data.displayName, options.data.params);\n            if (tag) {\n                options.data.setParam('tag', tag);\n            }\n        },\n        \"ttl\",\n        peg$literalExpectation(\"ttl\", true),\n        function (via_ttl_value) {\n            options = options || { data: {} };\n            options.data.ttl = via_ttl_value;\n        },\n        \"maddr\",\n        peg$literalExpectation(\"maddr\", true),\n        function (via_maddr) {\n            options = options || { data: {} };\n            options.data.maddr = via_maddr;\n        },\n        \"received\",\n        peg$literalExpectation(\"received\", true),\n        function (via_received) {\n            options = options || { data: {} };\n            options.data.received = via_received;\n        },\n        \"branch\",\n        peg$literalExpectation(\"branch\", true),\n        function (via_branch) {\n            options = options || { data: {} };\n            options.data.branch = via_branch;\n        },\n        \"rport\",\n        peg$literalExpectation(\"rport\", true),\n        function (response_port) {\n            options = options || { data: {} };\n            if (typeof response_port !== 'undefined')\n                options.data.rport = response_port.join('');\n        },\n        function (via_protocol) {\n            options = options || { data: {} };\n            options.data.protocol = via_protocol;\n        },\n        peg$literalExpectation(\"UDP\", true),\n        peg$literalExpectation(\"TCP\", true),\n        peg$literalExpectation(\"TLS\", true),\n        peg$literalExpectation(\"SCTP\", true),\n        function (via_transport) {\n            options = options || { data: {} };\n            options.data.transport = via_transport;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data.host = text();\n        },\n        function (via_sent_by_port) {\n            options = options || { data: {} };\n            options.data.port = parseInt(via_sent_by_port.join(''));\n        },\n        function (ttl) {\n            return parseInt(ttl.join(''));\n        },\n        function (deltaSeconds) {\n            options = options || { data: {} };\n            if (options.startRule === 'Session_Expires') {\n                options.data.deltaSeconds = deltaSeconds;\n            }\n        },\n        \"refresher\",\n        peg$literalExpectation(\"refresher\", false),\n        \"uas\",\n        peg$literalExpectation(\"uas\", false),\n        \"uac\",\n        peg$literalExpectation(\"uac\", false),\n        function (endpoint) {\n            options = options || { data: {} };\n            if (options.startRule === 'Session_Expires') {\n                options.data.refresher = endpoint;\n            }\n        },\n        function (deltaSeconds) {\n            options = options || { data: {} };\n            if (options.startRule === 'Min_SE') {\n                options.data = deltaSeconds;\n            }\n        },\n        \"stuns\",\n        peg$literalExpectation(\"stuns\", true),\n        \"stun\",\n        peg$literalExpectation(\"stun\", true),\n        function (scheme) {\n            options = options || { data: {} };\n            options.data.scheme = scheme;\n        },\n        function (host) {\n            options = options || { data: {} };\n            options.data.host = host;\n        },\n        \"?transport=\",\n        peg$literalExpectation(\"?transport=\", false),\n        \"turns\",\n        peg$literalExpectation(\"turns\", true),\n        \"turn\",\n        peg$literalExpectation(\"turn\", true),\n        function (transport) {\n            options = options || { data: {} };\n            options.data.transport = transport;\n        },\n        function () {\n            options = options || { data: {} };\n            options.data = text();\n        },\n        \"Referred-By\",\n        peg$literalExpectation(\"Referred-By\", false),\n        \"b\",\n        peg$literalExpectation(\"b\", false),\n        \"cid\",\n        peg$literalExpectation(\"cid\", false)\n    ];\n    const peg$bytecode = [\n        peg$decode(\"2 \\\"\\\"6 7!\"),\n        peg$decode(\"4\\\"\\\"\\\"5!7#\"),\n        peg$decode(\"4$\\\"\\\"5!7%\"),\n        peg$decode(\"4&\\\"\\\"5!7'\"),\n        peg$decode(\";'.# &;(\"),\n        peg$decode(\"4(\\\"\\\"5!7)\"),\n        peg$decode(\"4*\\\"\\\"5!7+\"),\n        peg$decode(\"2,\\\"\\\"6,7-\"),\n        peg$decode(\"2.\\\"\\\"6.7/\"),\n        peg$decode(\"40\\\"\\\"5!71\"),\n        peg$decode(\"22\\\"\\\"6273.\\x89 &24\\\"\\\"6475.} &26\\\"\\\"6677.q &28\\\"\\\"6879.e &2:\\\"\\\"6:7;.Y &2<\\\"\\\"6<7=.M &2>\\\"\\\"6>7?.A &2@\\\"\\\"6@7A.5 &2B\\\"\\\"6B7C.) &2D\\\"\\\"6D7E\"),\n        peg$decode(\";).# &;,\"),\n        peg$decode(\"2F\\\"\\\"6F7G.} &2H\\\"\\\"6H7I.q &2J\\\"\\\"6J7K.e &2L\\\"\\\"6L7M.Y &2N\\\"\\\"6N7O.M &2P\\\"\\\"6P7Q.A &2R\\\"\\\"6R7S.5 &2T\\\"\\\"6T7U.) &2V\\\"\\\"6V7W\"),\n        peg$decode(\"%%2X\\\"\\\"6X7Y/5#;#/,$;#/#$+#)(#'#(\\\"'#&'#/\\\"!&,)\"),\n        peg$decode(\"%%$;$0#*;$&/,#; /#$+\\\")(\\\"'#&'#.\\\" &\\\"/=#$;$/&#0#*;$&&&#/'$8\\\":Z\\\" )(\\\"'#&'#\"),\n        peg$decode(\";..\\\" &\\\"\"),\n        peg$decode(\"%$;'.# &;(0)*;'.# &;(&/?#28\\\"\\\"6879/0$;//'$8#:[# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%%$;2/&#0#*;2&&&#/g#$%$;.0#*;.&/,#;2/#$+\\\")(\\\"'#&'#0=*%$;.0#*;.&/,#;2/#$+\\\")(\\\"'#&'#&/#$+\\\")(\\\"'#&'#/\\\"!&,)\"),\n        peg$decode(\"4\\\\\\\"\\\"5!7].# &;3\"),\n        peg$decode(\"4^\\\"\\\"5!7_\"),\n        peg$decode(\"4`\\\"\\\"5!7a\"),\n        peg$decode(\";!.) &4b\\\"\\\"5!7c\"),\n        peg$decode(\"%$;).\\x95 &2F\\\"\\\"6F7G.\\x89 &2J\\\"\\\"6J7K.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O/\\x9E#0\\x9B*;).\\x95 &2F\\\"\\\"6F7G.\\x89 &2J\\\"\\\"6J7K.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O&&&#/\\\"!&,)\"),\n        peg$decode(\"%$;).\\x89 &2F\\\"\\\"6F7G.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O/\\x92#0\\x8F*;).\\x89 &2F\\\"\\\"6F7G.} &2L\\\"\\\"6L7M.q &2X\\\"\\\"6X7Y.e &2P\\\"\\\"6P7Q.Y &2H\\\"\\\"6H7I.M &2@\\\"\\\"6@7A.A &2d\\\"\\\"6d7e.5 &2R\\\"\\\"6R7S.) &2N\\\"\\\"6N7O&&&#/\\\"!&,)\"),\n        peg$decode(\"2T\\\"\\\"6T7U.\\xE3 &2V\\\"\\\"6V7W.\\xD7 &2f\\\"\\\"6f7g.\\xCB &2h\\\"\\\"6h7i.\\xBF &2:\\\"\\\"6:7;.\\xB3 &2D\\\"\\\"6D7E.\\xA7 &22\\\"\\\"6273.\\x9B &28\\\"\\\"6879.\\x8F &2j\\\"\\\"6j7k.\\x83 &;&.} &24\\\"\\\"6475.q &2l\\\"\\\"6l7m.e &2n\\\"\\\"6n7o.Y &26\\\"\\\"6677.M &2>\\\"\\\"6>7?.A &2p\\\"\\\"6p7q.5 &2r\\\"\\\"6r7s.) &;'.# &;(\"),\n        peg$decode(\"%$;).\\u012B &2F\\\"\\\"6F7G.\\u011F &2J\\\"\\\"6J7K.\\u0113 &2L\\\"\\\"6L7M.\\u0107 &2X\\\"\\\"6X7Y.\\xFB &2P\\\"\\\"6P7Q.\\xEF &2H\\\"\\\"6H7I.\\xE3 &2@\\\"\\\"6@7A.\\xD7 &2d\\\"\\\"6d7e.\\xCB &2R\\\"\\\"6R7S.\\xBF &2N\\\"\\\"6N7O.\\xB3 &2T\\\"\\\"6T7U.\\xA7 &2V\\\"\\\"6V7W.\\x9B &2f\\\"\\\"6f7g.\\x8F &2h\\\"\\\"6h7i.\\x83 &28\\\"\\\"6879.w &2j\\\"\\\"6j7k.k &;&.e &24\\\"\\\"6475.Y &2l\\\"\\\"6l7m.M &2n\\\"\\\"6n7o.A &26\\\"\\\"6677.5 &2p\\\"\\\"6p7q.) &2r\\\"\\\"6r7s/\\u0134#0\\u0131*;).\\u012B &2F\\\"\\\"6F7G.\\u011F &2J\\\"\\\"6J7K.\\u0113 &2L\\\"\\\"6L7M.\\u0107 &2X\\\"\\\"6X7Y.\\xFB &2P\\\"\\\"6P7Q.\\xEF &2H\\\"\\\"6H7I.\\xE3 &2@\\\"\\\"6@7A.\\xD7 &2d\\\"\\\"6d7e.\\xCB &2R\\\"\\\"6R7S.\\xBF &2N\\\"\\\"6N7O.\\xB3 &2T\\\"\\\"6T7U.\\xA7 &2V\\\"\\\"6V7W.\\x9B &2f\\\"\\\"6f7g.\\x8F &2h\\\"\\\"6h7i.\\x83 &28\\\"\\\"6879.w &2j\\\"\\\"6j7k.k &;&.e &24\\\"\\\"6475.Y &2l\\\"\\\"6l7m.M &2n\\\"\\\"6n7o.A &26\\\"\\\"6677.5 &2p\\\"\\\"6p7q.) &2r\\\"\\\"6r7s&&&#/\\\"!&,)\"),\n        peg$decode(\"%;//?#2P\\\"\\\"6P7Q/0$;//'$8#:t# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#24\\\"\\\"6475/0$;//'$8#:u# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2>\\\"\\\"6>7?/0$;//'$8#:v# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2T\\\"\\\"6T7U/0$;//'$8#:w# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2V\\\"\\\"6V7W/0$;//'$8#:x# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%2h\\\"\\\"6h7i/0#;//'$8\\\":y\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;//6#2f\\\"\\\"6f7g/'$8\\\":z\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;//?#2D\\\"\\\"6D7E/0$;//'$8#:{# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#22\\\"\\\"6273/0$;//'$8#:|# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//?#28\\\"\\\"6879/0$;//'$8#:}# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;//0#;&/'$8\\\":~\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;&/0#;//'$8\\\":~\\\" )(\\\"'#&'#\"),\n        peg$decode(\"%;=/T#$;G.) &;K.# &;F0/*;G.) &;K.# &;F&/,$;>/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"4\\x7F\\\"\\\"5!7\\x80.A &4\\x81\\\"\\\"5!7\\x82.5 &4\\x83\\\"\\\"5!7\\x84.) &;3.# &;.\"),\n        peg$decode(\"%%;//Q#;&/H$$;J.# &;K0)*;J.# &;K&/,$;&/#$+$)($'#(#'#(\\\"'#&'#/\\\"!&,)\"),\n        peg$decode(\"%;//]#;&/T$%$;J.# &;K0)*;J.# &;K&/\\\"!&,)/1$;&/($8$:\\x85$!!)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\";..G &2L\\\"\\\"6L7M.; &4\\x86\\\"\\\"5!7\\x87./ &4\\x83\\\"\\\"5!7\\x84.# &;3\"),\n        peg$decode(\"%2j\\\"\\\"6j7k/J#4\\x88\\\"\\\"5!7\\x89.5 &4\\x8A\\\"\\\"5!7\\x8B.) &4\\x8C\\\"\\\"5!7\\x8D/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;N/M#28\\\"\\\"6879/>$;O.\\\" &\\\"/0$;S/'$8$:\\x8E$ )($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;N/d#28\\\"\\\"6879/U$;O.\\\" &\\\"/G$;S/>$;_/5$;l.\\\" &\\\"/'$8&:\\x8F& )(&'#(%'#($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\x90\\\"\\\"5$7\\x91.) &3\\x92\\\"\\\"5#7\\x93/' 8!:\\x94!! )\"),\n        peg$decode(\"%;P/]#%28\\\"\\\"6879/,#;R/#$+\\\")(\\\"'#&'#.\\\" &\\\"/6$2:\\\"\\\"6:7;/'$8#:\\x95# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"$;+.) &;-.# &;Q/2#0/*;+.) &;-.# &;Q&&&#\"),\n        peg$decode(\"2<\\\"\\\"6<7=.q &2>\\\"\\\"6>7?.e &2@\\\"\\\"6@7A.Y &2B\\\"\\\"6B7C.M &2D\\\"\\\"6D7E.A &22\\\"\\\"6273.5 &26\\\"\\\"6677.) &24\\\"\\\"6475\"),\n        peg$decode(\"%$;+._ &;-.Y &2<\\\"\\\"6<7=.M &2>\\\"\\\"6>7?.A &2@\\\"\\\"6@7A.5 &2B\\\"\\\"6B7C.) &2D\\\"\\\"6D7E0e*;+._ &;-.Y &2<\\\"\\\"6<7=.M &2>\\\"\\\"6>7?.A &2@\\\"\\\"6@7A.5 &2B\\\"\\\"6B7C.) &2D\\\"\\\"6D7E&/& 8!:\\x96! )\"),\n        peg$decode(\"%;T/J#%28\\\"\\\"6879/,#;^/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;U.) &;\\\\.# &;X/& 8!:\\x97! )\"),\n        peg$decode(\"%$%;V/2#2J\\\"\\\"6J7K/#$+\\\")(\\\"'#&'#0<*%;V/2#2J\\\"\\\"6J7K/#$+\\\")(\\\"'#&'#&/D#;W/;$2J\\\"\\\"6J7K.\\\" &\\\"/'$8#:\\x98# )(#'#(\\\"'#&'#\"),\n        peg$decode(\"$4\\x99\\\"\\\"5!7\\x9A/,#0)*4\\x99\\\"\\\"5!7\\x9A&&&#\"),\n        peg$decode(\"%4$\\\"\\\"5!7%/?#$4\\x9B\\\"\\\"5!7\\x9C0)*4\\x9B\\\"\\\"5!7\\x9C&/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%2l\\\"\\\"6l7m/?#;Y/6$2n\\\"\\\"6n7o/'$8#:\\x9D# )(#'#(\\\"'#&'#\"),\n        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peg$decode(\"%$;!/&#0#*;!&&&#/' 8!:\\u015D!! )\"),\n        peg$decode(\"%;\\xDB/Y#$%;B/,#;\\xDC/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xDC/#$+\\\")(\\\"'#&'#&/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%3\\u015E\\\"\\\"5&7\\u015F.; &3\\u0160\\\"\\\"5'7\\u0161./ &3\\u0162\\\"\\\"5*7\\u0163.# &;6/& 8!:\\u0164! )\"),\n        peg$decode(\"%3\\u0165\\\"\\\"5&7\\u0166/:#;</1$;\\xDD/($8#:\\u0167#! )(#'#(\\\"'#&'#.} &%3\\xF5\\\"\\\"5'7\\xF6/:#;</1$;\\x9E/($8#:\\u0168#! )(#'#(\\\"'#&'#.P &%3\\u0169\\\"\\\"5+7\\u016A/:#;</1$;\\x9E/($8#:\\u016B#! )(#'#(\\\"'#&'#.# &;\\xA0\"),\n        peg$decode(\"3\\u016C\\\"\\\"5+7\\u016D.k &3\\u016E\\\"\\\"5)7\\u016F._ &3\\u0170\\\"\\\"5(7\\u0171.S &3\\u0172\\\"\\\"5'7\\u0173.G &3\\u0174\\\"\\\"5&7\\u0175.; &3\\u0176\\\"\\\"5*7\\u0177./ &3\\u0178\\\"\\\"5)7\\u0179.# &;6\"),\n        peg$decode(\";1.\\\" &\\\"\"),\n        peg$decode(\"%%;6/k#$%;A/2#;6/)$8\\\":\\u015A\\\"\\\"$ )(\\\"'#&'#0<*%;A/2#;6/)$8\\\":\\u015A\\\"\\\"$ )(\\\"'#&'#&/)$8\\\":\\u015B\\\"\\\"! )(\\\"'#&'#.\\\" &\\\"/' 8!:\\u017A!! )\"),\n        peg$decode(\"%;L.# &;\\x99/]#$%;B/,#;\\xE1/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xE1/#$+\\\")(\\\"'#&'#&/'$8\\\":\\u017B\\\" )(\\\"'#&'#\"),\n        peg$decode(\";\\xB9.# &;\\xA0\"),\n        peg$decode(\"%;\\xE3/Y#$%;A/,#;\\xE3/#$+\\\")(\\\"'#&'#06*%;A/,#;\\xE3/#$+\\\")(\\\"'#&'#&/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;\\xEA/k#;./b$;\\xED/Y$$%;B/,#;\\xE4/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xE4/#$+\\\")(\\\"'#&'#&/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\";\\xE5.; &;\\xE6.5 &;\\xE7./ &;\\xE8.) &;\\xE9.# &;\\xA0\"),\n        peg$decode(\"%3\\u017C\\\"\\\"5#7\\u017D/:#;</1$;\\xF0/($8#:\\u017E#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u017F\\\"\\\"5%7\\u0180/:#;</1$;T/($8#:\\u0181#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u0182\\\"\\\"5(7\\u0183/F#;</=$;\\\\.) &;Y.# &;X/($8#:\\u0184#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u0185\\\"\\\"5&7\\u0186/:#;</1$;6/($8#:\\u0187#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u0188\\\"\\\"5%7\\u0189/A#;</8$$;!0#*;!&/($8#:\\u018A#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;\\xEB/G#;;/>$;6/5$;;/,$;\\xEC/#$+%)(%'#($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\x92\\\"\\\"5#7\\xD3.# &;6/' 8!:\\u018B!! )\"),\n        peg$decode(\"%3\\xB1\\\"\\\"5#7\\u018C.G &3\\xB3\\\"\\\"5#7\\u018D.; &3\\xB7\\\"\\\"5#7\\u018E./ &3\\xB5\\\"\\\"5$7\\u018F.# &;6/' 8!:\\u0190!! )\"),\n        peg$decode(\"%;\\xEE/D#%;C/,#;\\xEF/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;U.) &;\\\\.# &;X/& 8!:\\u0191! )\"),\n        peg$decode(\"%%;!.\\\" &\\\"/[#;!.\\\" &\\\"/M$;!.\\\" &\\\"/?$;!.\\\" &\\\"/1$;!.\\\" &\\\"/#$+%)(%'#($'#(#'#(\\\"'#&'#/' 8!:\\u0192!! )\"),\n        peg$decode(\"%%;!/?#;!.\\\" &\\\"/1$;!.\\\" &\\\"/#$+#)(#'#(\\\"'#&'#/' 8!:\\u0193!! )\"),\n        peg$decode(\";\\xBE\"),\n        peg$decode(\"%;\\x9E/^#$%;B/,#;\\xF3/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xF3/#$+\\\")(\\\"'#&'#&/($8\\\":\\u0194\\\"!!)(\\\"'#&'#\"),\n        peg$decode(\";\\xF4.# &;\\xA0\"),\n        peg$decode(\"%2\\u0195\\\"\\\"6\\u01957\\u0196/L#;</C$2\\u0197\\\"\\\"6\\u01977\\u0198.) &2\\u0199\\\"\\\"6\\u01997\\u019A/($8#:\\u019B#! )(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;\\x9E/^#$%;B/,#;\\xA0/#$+\\\")(\\\"'#&'#06*%;B/,#;\\xA0/#$+\\\")(\\\"'#&'#&/($8\\\":\\u019C\\\"!!)(\\\"'#&'#\"),\n        peg$decode(\"%;6/5#;0/,$;\\xF7/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"$;2.) &;4.# &;.0/*;2.) &;4.# &;.&\"),\n        peg$decode(\"$;%0#*;%&\"),\n        peg$decode(\"%;\\xFA/;#28\\\"\\\"6879/,$;\\xFB/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u019D\\\"\\\"5%7\\u019E.) &3\\u019F\\\"\\\"5$7\\u01A0/' 8!:\\u01A1!! )\"),\n        peg$decode(\"%;\\xFC/J#%28\\\"\\\"6879/,#;^/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;\\\\.) &;X.# &;\\x82/' 8!:\\u01A2!! )\"),\n        peg$decode(\";\\\".S &;!.M &2F\\\"\\\"6F7G.A &2J\\\"\\\"6J7K.5 &2H\\\"\\\"6H7I.) &2N\\\"\\\"6N7O\"),\n        peg$decode(\"2L\\\"\\\"6L7M.\\x95 &2B\\\"\\\"6B7C.\\x89 &2<\\\"\\\"6<7=.} &2R\\\"\\\"6R7S.q &2T\\\"\\\"6T7U.e &2V\\\"\\\"6V7W.Y &2P\\\"\\\"6P7Q.M &2@\\\"\\\"6@7A.A &2D\\\"\\\"6D7E.5 &22\\\"\\\"6273.) &2>\\\"\\\"6>7?\"),\n        peg$decode(\"%;\\u0100/b#28\\\"\\\"6879/S$;\\xFB/J$%2\\u01A3\\\"\\\"6\\u01A37\\u01A4/,#;\\xEC/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%3\\u01A5\\\"\\\"5%7\\u01A6.) &3\\u01A7\\\"\\\"5$7\\u01A8/' 8!:\\u01A1!! )\"),\n        peg$decode(\"%3\\xB1\\\"\\\"5#7\\xB2.6 &3\\xB3\\\"\\\"5#7\\xB4.* &$;+0#*;+&/' 8!:\\u01A9!! )\"),\n        peg$decode(\"%;\\u0104/\\x87#2F\\\"\\\"6F7G/x$;\\u0103/o$2F\\\"\\\"6F7G/`$;\\u0103/W$2F\\\"\\\"6F7G/H$;\\u0103/?$2F\\\"\\\"6F7G/0$;\\u0105/'$8):\\u01AA) )()'#(('#(''#(&'#(%'#($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;#/>#;#/5$;#/,$;#/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;\\u0103/,#;\\u0103/#$+\\\")(\\\"'#&'#\"),\n        peg$decode(\"%;\\u0103/5#;\\u0103/,$;\\u0103/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;q/T#$;m0#*;m&/D$%; /,#;\\xF8/#$+\\\")(\\\"'#&'#.\\\" &\\\"/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%2\\u01AB\\\"\\\"6\\u01AB7\\u01AC.) &2\\u01AD\\\"\\\"6\\u01AD7\\u01AE/w#;0/n$;\\u0108/e$$%;B/2#;\\u0109.# &;\\xA0/#$+\\\")(\\\"'#&'#0<*%;B/2#;\\u0109.# &;\\xA0/#$+\\\")(\\\"'#&'#&/#$+$)($'#(#'#(\\\"'#&'#\"),\n        peg$decode(\";\\x99.# &;L\"),\n        peg$decode(\"%2\\u01AF\\\"\\\"6\\u01AF7\\u01B0/5#;</,$;\\u010A/#$+#)(#'#(\\\"'#&'#\"),\n        peg$decode(\"%;D/S#;,/J$2:\\\"\\\"6:7;/;$;,.# &;T/,$;E/#$+%)(%'#($'#(#'#(\\\"'#&'#\")\n    ];\n    let peg$currPos = 0;\n    let peg$savedPos = 0;\n    const peg$posDetailsCache = [{ line: 1, column: 1 }];\n    let peg$maxFailPos = 0;\n    let peg$maxFailExpected = [];\n    let peg$silentFails = 0;\n    let peg$result;\n    if (options.startRule !== undefined) {\n        if (!(options.startRule in peg$startRuleIndices)) {\n            throw new Error(\"Can't start parsing from rule \\\"\" + options.startRule + \"\\\".\");\n        }\n        peg$startRuleIndex = peg$startRuleIndices[options.startRule];\n    }\n    function text() {\n        return input.substring(peg$savedPos, peg$currPos);\n    }\n    function location() {\n        return peg$computeLocation(peg$savedPos, peg$currPos);\n    }\n    function expected(description, location1) {\n        location1 = location1 !== undefined\n            ? location1\n            : peg$computeLocation(peg$savedPos, peg$currPos);\n        throw peg$buildStructuredError([peg$otherExpectation(description)], input.substring(peg$savedPos, peg$currPos), location1);\n    }\n    function error(message, location1) {\n        location1 = location1 !== undefined\n            ? location1\n            : peg$computeLocation(peg$savedPos, peg$currPos);\n        throw peg$buildSimpleError(message, location1);\n    }\n    function peg$literalExpectation(text1, ignoreCase) {\n        return { type: \"literal\", text: text1, ignoreCase: ignoreCase };\n    }\n    function peg$classExpectation(parts, inverted, ignoreCase) {\n        return { type: \"class\", parts: parts, inverted: inverted, ignoreCase: ignoreCase };\n    }\n    function peg$anyExpectation() {\n        return { type: \"any\" };\n    }\n    function peg$endExpectation() {\n        return { type: \"end\" };\n    }\n    function peg$otherExpectation(description) {\n        return { type: \"other\", description: description };\n    }\n    function peg$computePosDetails(pos) {\n        let details = peg$posDetailsCache[pos];\n        let p;\n        if (details) {\n            return details;\n        }\n        else {\n            p = pos - 1;\n            while (!peg$posDetailsCache[p]) {\n                p--;\n            }\n            details = peg$posDetailsCache[p];\n            details = {\n                line: details.line,\n                column: details.column\n            };\n            while (p < pos) {\n                if (input.charCodeAt(p) === 10) {\n                    details.line++;\n                    details.column = 1;\n                }\n                else {\n                    details.column++;\n                }\n                p++;\n            }\n            peg$posDetailsCache[pos] = details;\n            return details;\n        }\n    }\n    function peg$computeLocation(startPos, endPos) {\n        const startPosDetails = peg$computePosDetails(startPos);\n        const endPosDetails = peg$computePosDetails(endPos);\n        return {\n            source: peg$source,\n            start: {\n                offset: startPos,\n                line: startPosDetails.line,\n                column: startPosDetails.column\n            },\n            end: {\n                offset: endPos,\n                line: endPosDetails.line,\n                column: endPosDetails.column\n            }\n        };\n    }\n    function peg$fail(expected1) {\n        if (peg$currPos < peg$maxFailPos) {\n            return;\n        }\n        if (peg$currPos > peg$maxFailPos) {\n            peg$maxFailPos = peg$currPos;\n            peg$maxFailExpected = [];\n        }\n        peg$maxFailExpected.push(expected1);\n    }\n    function peg$buildSimpleError(message, location1) {\n        return new SyntaxError(message, [], \"\", location1);\n    }\n    function peg$buildStructuredError(expected1, found, location1) {\n        return new SyntaxError(SyntaxError.buildMessage(expected1, found), expected1, found, location1);\n    }\n    function peg$decode(s) {\n        return s.split(\"\").map((ch) => ch.charCodeAt(0) - 32);\n    }\n    function peg$parseRule(index) {\n        const bc = peg$bytecode[index];\n        let ip = 0;\n        const ips = [];\n        let end = bc.length;\n        const ends = [];\n        const stack = [];\n        let params;\n        while (true) {\n            while (ip < end) {\n                switch (bc[ip]) {\n                    case 0:\n                        stack.push(peg$consts[bc[ip + 1]]);\n                        ip += 2;\n                        break;\n                    case 1:\n                        stack.push(undefined);\n                        ip++;\n                        break;\n                    case 2:\n                        stack.push(null);\n                        ip++;\n                        break;\n                    case 3:\n                        stack.push(peg$FAILED);\n                        ip++;\n                        break;\n                    case 4:\n                        stack.push([]);\n                        ip++;\n                        break;\n                    case 5:\n                        stack.push(peg$currPos);\n                        ip++;\n                        break;\n                    case 6:\n                        stack.pop();\n                        ip++;\n                        break;\n                    case 7:\n                        peg$currPos = stack.pop();\n                        ip++;\n                        break;\n                    case 8:\n                        stack.length -= bc[ip + 1];\n                        ip += 2;\n                        break;\n                    case 9:\n                        stack.splice(-2, 1);\n                        ip++;\n                        break;\n                    case 10:\n                        stack[stack.length - 2].push(stack.pop());\n                        ip++;\n                        break;\n                    case 11:\n                        stack.push(stack.splice(stack.length - bc[ip + 1], bc[ip + 1]));\n                        ip += 2;\n                        break;\n                    case 12:\n                        stack.push(input.substring(stack.pop(), peg$currPos));\n                        ip++;\n                        break;\n                    case 13:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (stack[stack.length - 1]) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 14:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (stack[stack.length - 1] === peg$FAILED) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 15:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (stack[stack.length - 1] !== peg$FAILED) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 16:\n                        if (stack[stack.length - 1] !== peg$FAILED) {\n                            ends.push(end);\n                            ips.push(ip);\n                            end = ip + 2 + bc[ip + 1];\n                            ip += 2;\n                        }\n                        else {\n                            ip += 2 + bc[ip + 1];\n                        }\n                        break;\n                    case 17:\n                        ends.push(end);\n                        ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);\n                        if (input.length > peg$currPos) {\n                            end = ip + 3 + bc[ip + 1];\n                            ip += 3;\n                        }\n                        else {\n                            end = ip + 3 + bc[ip + 1] + bc[ip + 2];\n                            ip += 3 + bc[ip + 1];\n                        }\n                        break;\n                    case 18:\n                        ends.push(end);\n                        ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                        if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length) === peg$consts[bc[ip + 1]]) {\n                            end = ip + 4 + bc[ip + 2];\n                            ip += 4;\n                        }\n                        else {\n                            end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                            ip += 4 + bc[ip + 2];\n                        }\n                        break;\n                    case 19:\n                        ends.push(end);\n                        ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                        if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length).toLowerCase() === peg$consts[bc[ip + 1]]) {\n                            end = ip + 4 + bc[ip + 2];\n                            ip += 4;\n                        }\n                        else {\n                            end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                            ip += 4 + bc[ip + 2];\n                        }\n                        break;\n                    case 20:\n                        ends.push(end);\n                        ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);\n                        if (peg$consts[bc[ip + 1]].test(input.charAt(peg$currPos))) {\n                            end = ip + 4 + bc[ip + 2];\n                            ip += 4;\n                        }\n                        else {\n                            end = ip + 4 + bc[ip + 2] + bc[ip + 3];\n                            ip += 4 + bc[ip + 2];\n                        }\n                        break;\n                    case 21:\n                        stack.push(input.substr(peg$currPos, bc[ip + 1]));\n                        peg$currPos += bc[ip + 1];\n                        ip += 2;\n                        break;\n                    case 22:\n                        stack.push(peg$consts[bc[ip + 1]]);\n                        peg$currPos += peg$consts[bc[ip + 1]].length;\n                        ip += 2;\n                        break;\n                    case 23:\n                        stack.push(peg$FAILED);\n                        if (peg$silentFails === 0) {\n                            peg$fail(peg$consts[bc[ip + 1]]);\n                        }\n                        ip += 2;\n                        break;\n                    case 24:\n                        peg$savedPos = stack[stack.length - 1 - bc[ip + 1]];\n                        ip += 2;\n                        break;\n                    case 25:\n                        peg$savedPos = peg$currPos;\n                        ip++;\n                        break;\n                    case 26:\n                        params = bc.slice(ip + 4, ip + 4 + bc[ip + 3])\n                            .map(function (p) { return stack[stack.length - 1 - p]; });\n                        stack.splice(stack.length - bc[ip + 2], bc[ip + 2], peg$consts[bc[ip + 1]].apply(null, params));\n                        ip += 4 + bc[ip + 3];\n                        break;\n                    case 27:\n                        stack.push(peg$parseRule(bc[ip + 1]));\n                        ip += 2;\n                        break;\n                    case 28:\n                        peg$silentFails++;\n                        ip++;\n                        break;\n                    case 29:\n                        peg$silentFails--;\n                        ip++;\n                        break;\n                    default:\n                        throw new Error(\"Invalid opcode: \" + bc[ip] + \".\");\n                }\n            }\n            if (ends.length > 0) {\n                end = ends.pop();\n                ip = ips.pop();\n            }\n            else {\n                break;\n            }\n        }\n        return stack[0];\n    }\n    options.data = {}; // Object to which header attributes will be assigned during parsing\n    function list(head, tail) {\n        return [head].concat(tail);\n    }\n    peg$result = peg$parseRule(peg$startRuleIndex);\n    if (peg$result !== peg$FAILED && peg$currPos === input.length) {\n        return peg$result;\n    }\n    else {\n        if (peg$result !== peg$FAILED && peg$currPos < input.length) {\n            peg$fail(peg$endExpectation());\n        }\n        throw peg$buildStructuredError(peg$maxFailExpected, peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null, peg$maxFailPos < input.length\n            ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1)\n            : peg$computeLocation(peg$maxFailPos, peg$maxFailPos));\n    }\n}\nexport const parse = peg$parse;\n","import { Parameters } from \"./parameters.js\";\n/**\n * Name Address SIP header.\n * @public\n */\nexport class NameAddrHeader extends Parameters {\n    /**\n     * Constructor\n     * @param uri -\n     * @param displayName -\n     * @param parameters -\n     */\n    constructor(uri, displayName, parameters) {\n        super(parameters);\n        this.uri = uri;\n        this._displayName = displayName;\n    }\n    get friendlyName() {\n        return this.displayName || this.uri.aor;\n    }\n    get displayName() { return this._displayName; }\n    set displayName(value) {\n        this._displayName = value;\n    }\n    clone() {\n        return new NameAddrHeader(this.uri.clone(), this._displayName, JSON.parse(JSON.stringify(this.parameters)));\n    }\n    toString() {\n        let body = (this.displayName || this.displayName === \"0\") ? '\"' + this.displayName + '\" ' : \"\";\n        body += \"<\" + this.uri.toString() + \">\";\n        for (const parameter in this.parameters) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (this.parameters.hasOwnProperty(parameter)) {\n                body += \";\" + parameter;\n                if (this.parameters[parameter] !== null) {\n                    body += \"=\" + this.parameters[parameter];\n                }\n            }\n        }\n        return body;\n    }\n}\n","/**\n * @internal\n */\nexport class Parameters {\n    constructor(parameters) {\n        this.parameters = {};\n        // for in is required here as the Grammar parser is adding to the prototype chain\n        for (const param in parameters) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (parameters.hasOwnProperty(param)) {\n                this.setParam(param, parameters[param]);\n            }\n        }\n    }\n    setParam(key, value) {\n        if (key) {\n            this.parameters[key.toLowerCase()] = (typeof value === \"undefined\" || value === null) ? null : value.toString();\n        }\n    }\n    getParam(key) {\n        if (key) {\n            return this.parameters[key.toLowerCase()];\n        }\n    }\n    hasParam(key) {\n        return !!(key && this.parameters[key.toLowerCase()] !== undefined);\n    }\n    deleteParam(key) {\n        key = key.toLowerCase();\n        if (this.hasParam(key)) {\n            const value = this.parameters[key];\n            delete this.parameters[key];\n            return value;\n        }\n    }\n    clearParams() {\n        this.parameters = {};\n    }\n}\n","/* eslint-disable @typescript-eslint/no-explicit-any */\nimport { Parameters } from \"./parameters.js\";\n/**\n * URI.\n * @public\n */\nexport class URI extends Parameters {\n    /**\n     * Constructor\n     * @param scheme -\n     * @param user -\n     * @param host -\n     * @param port -\n     * @param parameters -\n     * @param headers -\n     */\n    constructor(scheme = \"sip\", user, host, port, parameters, headers) {\n        super(parameters || {});\n        this.headers = {};\n        // Checks\n        if (!host) {\n            throw new TypeError('missing or invalid \"host\" parameter');\n        }\n        for (const header in headers) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (headers.hasOwnProperty(header)) {\n                this.setHeader(header, headers[header]);\n            }\n        }\n        // Raw URI\n        this.raw = {\n            scheme,\n            user,\n            host,\n            port\n        };\n        // Normalized URI\n        this.normal = {\n            scheme: scheme.toLowerCase(),\n            user,\n            host: host.toLowerCase(),\n            port\n        };\n    }\n    get scheme() { return this.normal.scheme; }\n    set scheme(value) {\n        this.raw.scheme = value;\n        this.normal.scheme = value.toLowerCase();\n    }\n    get user() { return this.normal.user; }\n    set user(value) {\n        this.normal.user = this.raw.user = value;\n    }\n    get host() { return this.normal.host; }\n    set host(value) {\n        this.raw.host = value;\n        this.normal.host = value.toLowerCase();\n    }\n    get aor() { return this.normal.user + \"@\" + this.normal.host; }\n    get port() { return this.normal.port; }\n    set port(value) {\n        this.normal.port = this.raw.port = value === 0 ? value : value;\n    }\n    setHeader(name, value) {\n        this.headers[this.headerize(name)] = (value instanceof Array) ? value : [value];\n    }\n    getHeader(name) {\n        if (name) {\n            return this.headers[this.headerize(name)];\n        }\n    }\n    hasHeader(name) {\n        // eslint-disable-next-line no-prototype-builtins\n        return !!name && !!this.headers.hasOwnProperty(this.headerize(name));\n    }\n    deleteHeader(header) {\n        header = this.headerize(header);\n        // eslint-disable-next-line no-prototype-builtins\n        if (this.headers.hasOwnProperty(header)) {\n            const value = this.headers[header];\n            delete this.headers[header];\n            return value;\n        }\n    }\n    clearHeaders() {\n        this.headers = {};\n    }\n    clone() {\n        return new URI(this._raw.scheme, this._raw.user || \"\", this._raw.host, this._raw.port, JSON.parse(JSON.stringify(this.parameters)), JSON.parse(JSON.stringify(this.headers)));\n    }\n    toRaw() {\n        return this._toString(this._raw);\n    }\n    toString() {\n        return this._toString(this._normal);\n    }\n    get _normal() { return this.normal; }\n    get _raw() { return this.raw; }\n    _toString(uri) {\n        let uriString = uri.scheme + \":\";\n        // add slashes if it's not a sip(s) URI\n        if (!uri.scheme.toLowerCase().match(\"^sips?$\")) {\n            uriString += \"//\";\n        }\n        if (uri.user) {\n            uriString += this.escapeUser(uri.user) + \"@\";\n        }\n        uriString += uri.host;\n        if (uri.port || uri.port === 0) {\n            uriString += \":\" + uri.port;\n        }\n        for (const parameter in this.parameters) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (this.parameters.hasOwnProperty(parameter)) {\n                uriString += \";\" + parameter;\n                if (this.parameters[parameter] !== null) {\n                    uriString += \"=\" + this.parameters[parameter];\n                }\n            }\n        }\n        const headers = [];\n        for (const header in this.headers) {\n            // eslint-disable-next-line no-prototype-builtins\n            if (this.headers.hasOwnProperty(header)) {\n                // eslint-disable-next-line @typescript-eslint/no-for-in-array\n                for (const idx in this.headers[header]) {\n                    // eslint-disable-next-line no-prototype-builtins\n                    if (this.headers[header].hasOwnProperty(idx)) {\n                        headers.push(header + \"=\" + this.headers[header][idx]);\n                    }\n                }\n            }\n        }\n        if (headers.length > 0) {\n            uriString += \"?\" + headers.join(\"&\");\n        }\n        return uriString;\n    }\n    /*\n     * Hex-escape a SIP URI user.\n     * @private\n     * @param {String} user\n     */\n    escapeUser(user) {\n        let decodedUser;\n        // FIXME: This is called by toString above which should never throw, but\n        // decodeURIComponent can throw and I've seen one case in production where\n        // it did throw resulting in a cascading failure. This class should be\n        // fixed so that decodeURIComponent is not called at this point (in toString).\n        // The user should be decoded when the URI is constructor or some other\n        // place where we can catch the error before the URI is created or somesuch.\n        // eslint-disable-next-line no-useless-catch\n        try {\n            decodedUser = decodeURIComponent(user);\n        }\n        catch (error) {\n            throw error;\n        }\n        // Don't hex-escape ':' (%3A), '+' (%2B), '?' (%3F\"), '/' (%2F).\n        return encodeURIComponent(decodedUser)\n            .replace(/%3A/ig, \":\")\n            .replace(/%2B/ig, \"+\")\n            .replace(/%3F/ig, \"?\")\n            .replace(/%2F/ig, \"/\");\n    }\n    headerize(str) {\n        const exceptions = {\n            \"Call-Id\": \"Call-ID\",\n            \"Cseq\": \"CSeq\",\n            \"Min-Se\": \"Min-SE\",\n            \"Rack\": \"RAck\",\n            \"Rseq\": \"RSeq\",\n            \"Www-Authenticate\": \"WWW-Authenticate\",\n        };\n        const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n        const parts = name.length;\n        let hname = \"\";\n        for (let part = 0; part < parts; part++) {\n            if (part !== 0) {\n                hname += \"-\";\n            }\n            hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n        }\n        if (exceptions[hname]) {\n            hname = exceptions[hname];\n        }\n        return hname;\n    }\n}\n/**\n * Returns true if URIs are equivalent per RFC 3261 Section 19.1.4.\n * @param a - URI to compare\n * @param b - URI to compare\n *\n * @remarks\n * 19.1.4 URI Comparison\n * Some operations in this specification require determining whether two\n * SIP or SIPS URIs are equivalent.\n *\n * https://tools.ietf.org/html/rfc3261#section-19.1.4\n * @internal\n */\nexport function equivalentURI(a, b) {\n    // o  A SIP and SIPS URI are never equivalent.\n    if (a.scheme !== b.scheme) {\n        return false;\n    }\n    // o  Comparison of the userinfo of SIP and SIPS URIs is case-\n    //    sensitive.  This includes userinfo containing passwords or\n    //    formatted as telephone-subscribers.  Comparison of all other\n    //    components of the URI is case-insensitive unless explicitly\n    //    defined otherwise.\n    //\n    // o  The ordering of parameters and header fields is not significant\n    //    in comparing SIP and SIPS URIs.\n    //\n    // o  Characters other than those in the \"reserved\" set (see RFC 2396\n    //    [5]) are equivalent to their \"\"%\" HEX HEX\" encoding.\n    //\n    // o  An IP address that is the result of a DNS lookup of a host name\n    //    does not match that host name.\n    //\n    // o  For two URIs to be equal, the user, password, host, and port\n    //    components must match.\n    //\n    // A URI omitting the user component will not match a URI that\n    // includes one.  A URI omitting the password component will not\n    // match a URI that includes one.\n    //\n    // A URI omitting any component with a default value will not\n    // match a URI explicitly containing that component with its\n    // default value.  For instance, a URI omitting the optional port\n    // component will not match a URI explicitly declaring port 5060.\n    // The same is true for the transport-parameter, ttl-parameter,\n    // user-parameter, and method components.\n    //\n    // Defining sip:user@host to not be equivalent to\n    // sip:user@host:5060 is a change from RFC 2543.  When deriving\n    // addresses from URIs, equivalent addresses are expected from\n    // equivalent URIs.  The URI sip:user@host:5060 will always\n    // resolve to port 5060.  The URI sip:user@host may resolve to\n    // other ports through the DNS SRV mechanisms detailed in [4].\n    // FIXME: TODO:\n    // - character compared to hex encoding is not handled\n    // - password does not exist on URI currently\n    if (a.user !== b.user || a.host !== b.host || a.port !== b.port) {\n        return false;\n    }\n    // o  URI uri-parameter components are compared as follows:\n    function compareParameters(a, b) {\n        //  -  Any uri-parameter appearing in both URIs must match.\n        const parameterKeysA = Object.keys(a.parameters);\n        const parameterKeysB = Object.keys(b.parameters);\n        const intersection = parameterKeysA.filter(x => parameterKeysB.includes(x));\n        if (!intersection.every(key => a.parameters[key] === b.parameters[key])) {\n            return false;\n        }\n        //  -  A user, ttl, or method uri-parameter appearing in only one\n        //     URI never matches, even if it contains the default value.\n        if (![\"user\", \"ttl\", \"method\", \"transport\"].every(key => a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) {\n            return false;\n        }\n        //  -  A URI that includes an maddr parameter will not match a URI\n        //     that contains no maddr parameter.\n        if (![\"maddr\"].every(key => a.hasParam(key) && b.hasParam(key) || !a.hasParam(key) && !b.hasParam(key))) {\n            return false;\n        }\n        //  -  All other uri-parameters appearing in only one URI are\n        //     ignored when comparing the URIs.\n        return true;\n    }\n    if (!compareParameters(a, b)) {\n        return false;\n    }\n    // o  URI header components are never ignored.  Any present header\n    //    component MUST be present in both URIs and match for the URIs\n    //    to match.  The matching rules are defined for each header field\n    //    in Section 20.\n    const headerKeysA = Object.keys(a.headers);\n    const headerKeysB = Object.keys(b.headers);\n    // No need to check if no headers\n    if (headerKeysA.length !== 0 || headerKeysB.length !== 0) {\n        // Must have same number of headers\n        if (headerKeysA.length !== headerKeysB.length) {\n            return false;\n        }\n        // Must have same headers\n        const intersection = headerKeysA.filter(x => headerKeysB.includes(x));\n        if (intersection.length !== headerKeysB.length) {\n            return false;\n        }\n        // FIXME: Not to spec. But perhaps not worth fixing?\n        // Must have same header values\n        // It seems too much to consider multiple headers with same name.\n        // It seems too much to compare two header params according to the rule of each header.\n        // We'll assume a single header and compare them string to string...\n        if (!intersection.every(key => a.headers[key].length && b.headers[key].length && a.headers[key][0] === b.headers[key][0])) {\n            return false;\n        }\n    }\n    return true;\n}\n","import { IncomingRequestMessage } from \"./incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"./incoming-response-message.js\";\nimport { OutgoingRequestMessage } from \"./outgoing-request-message.js\";\n// If the Content-Disposition header field is missing, bodies of\n// Content-Type application/sdp imply the disposition \"session\", while\n// other content types imply \"render\".\n// https://tools.ietf.org/html/rfc3261#section-13.2.1\nfunction contentTypeToContentDisposition(contentType) {\n    if (contentType === \"application/sdp\") {\n        return \"session\";\n    }\n    else {\n        return \"render\";\n    }\n}\n/**\n * Create a Body given a legacy body type.\n * @param bodyLegacy - Body Object\n * @internal\n */\nexport function fromBodyLegacy(bodyLegacy) {\n    const content = typeof bodyLegacy === \"string\" ? bodyLegacy : bodyLegacy.body;\n    const contentType = typeof bodyLegacy === \"string\" ? \"application/sdp\" : bodyLegacy.contentType;\n    const contentDisposition = contentTypeToContentDisposition(contentType);\n    const body = { contentDisposition, contentType, content };\n    return body;\n}\n/**\n * User-Defined Type Guard for Body.\n * @param body - Body to check.\n * @internal\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nexport function isBody(body) {\n    return body &&\n        typeof body.content === \"string\" &&\n        typeof body.contentType === \"string\" &&\n        body.contentDisposition === undefined\n        ? true\n        : typeof body.contentDisposition === \"string\";\n}\n/**\n * Given a message, get a normalized body.\n * The content disposition is inferred if not set.\n * @param message - The message.\n * @internal\n */\nexport function getBody(message) {\n    let contentDisposition;\n    let contentType;\n    let content;\n    // We're in UAS role, receiving incoming request\n    if (message instanceof IncomingRequestMessage) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, receiving incoming response\n    if (message instanceof IncomingResponseMessage) {\n        if (message.body) {\n            // FIXME: Parsing needs typing\n            const parse = message.parseHeader(\"Content-Disposition\");\n            contentDisposition = parse ? parse.type : undefined;\n            contentType = message.parseHeader(\"Content-Type\");\n            content = message.body;\n        }\n    }\n    // We're in UAC role, sending outgoing request\n    if (message instanceof OutgoingRequestMessage) {\n        if (message.body) {\n            contentDisposition = message.getHeader(\"Content-Disposition\");\n            contentType = message.getHeader(\"Content-Type\");\n            if (typeof message.body === \"string\") {\n                // FIXME: OutgoingRequest should not allow a \"string\" body without a \"Content-Type\" header.\n                if (!contentType) {\n                    throw new Error(\"Header content type header does not equal body content type.\");\n                }\n                content = message.body;\n            }\n            else {\n                // FIXME: OutgoingRequest should not allow the \"Content-Type\" header not to match th body content type\n                if (contentType && contentType !== message.body.contentType) {\n                    throw new Error(\"Header content type header does not equal body content type.\");\n                }\n                contentType = message.body.contentType;\n                content = message.body.body;\n            }\n        }\n    }\n    // We're in UAS role, sending outgoing response\n    if (isBody(message)) {\n        contentDisposition = message.contentDisposition;\n        contentType = message.contentType;\n        content = message.content;\n    }\n    // No content, no body.\n    if (!content) {\n        return undefined;\n    }\n    if (contentType && !contentDisposition) {\n        contentDisposition = contentTypeToContentDisposition(contentType);\n    }\n    if (!contentDisposition) {\n        throw new Error(\"Content disposition undefined.\");\n    }\n    if (!contentType) {\n        throw new Error(\"Content type undefined.\");\n    }\n    return {\n        contentDisposition,\n        contentType,\n        content\n    };\n}\n","import { IncomingMessage } from \"./incoming-message.js\";\n/**\n * Incoming request message.\n * @public\n */\nexport class IncomingRequestMessage extends IncomingMessage {\n    constructor() {\n        super();\n    }\n}\n","import { Grammar } from \"../../grammar/grammar.js\";\nimport { headerize } from \"./utils.js\";\n/**\n * Incoming message.\n * @public\n */\nexport class IncomingMessage {\n    constructor() {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.headers = {};\n    }\n    /**\n     * Insert a header of the given name and value into the last position of the\n     * header array.\n     * @param name - header name\n     * @param value - header value\n     */\n    addHeader(name, value) {\n        const header = { raw: value };\n        name = headerize(name);\n        if (this.headers[name]) {\n            this.headers[name].push(header);\n        }\n        else {\n            this.headers[name] = [header];\n        }\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */\n    getHeader(name) {\n        const header = this.headers[headerize(name)];\n        if (header) {\n            if (header[0]) {\n                return header[0].raw;\n            }\n        }\n        else {\n            return;\n        }\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array - with all the headers of the specified name.\n     */\n    getHeaders(name) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const header = this.headers[headerize(name)];\n        const result = [];\n        if (!header) {\n            return [];\n        }\n        for (const headerPart of header) {\n            result.push(headerPart.raw);\n        }\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */\n    hasHeader(name) {\n        return !!this.headers[headerize(name)];\n    }\n    /**\n     * Parse the given header on the given index.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    parseHeader(name, idx = 0) {\n        name = headerize(name);\n        if (!this.headers[name]) {\n            // this.logger.log(\"header '\" + name + \"' not present\");\n            return;\n        }\n        else if (idx >= this.headers[name].length) {\n            // this.logger.log(\"not so many '\" + name + \"' headers present\");\n            return;\n        }\n        const header = this.headers[name][idx];\n        const value = header.raw;\n        if (header.parsed) {\n            return header.parsed;\n        }\n        // substitute '-' by '_' for grammar rule matching.\n        const parsed = Grammar.parse(value, name.replace(/-/g, \"_\"));\n        if (parsed === -1) {\n            this.headers[name].splice(idx, 1); // delete from headers\n            // this.logger.warn('error parsing \"' + name + '\" header field with value \"' + value + '\"');\n            return;\n        }\n        else {\n            header.parsed = parsed;\n            return parsed;\n        }\n    }\n    /**\n     * Message Header attribute selector. Alias of parseHeader.\n     * @param name - header name\n     * @param idx - header index\n     * @returns Parsed header object, undefined if the\n     *   header is not present or in case of a parsing error.\n     *\n     * @example\n     * message.s('via',3).port\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    s(name, idx = 0) {\n        return this.parseHeader(name, idx);\n    }\n    /**\n     * Replace the value of the given header by the value.\n     * @param name - header name\n     * @param value - header value\n     */\n    setHeader(name, value) {\n        this.headers[headerize(name)] = [{ raw: value }];\n    }\n    toString() {\n        return this.data;\n    }\n}\n","/**\n * SIP Response Reasons\n * DOC: http://www.iana.org/assignments/sip-parameters\n * @internal\n */\nconst REASON_PHRASE = {\n    100: \"Trying\",\n    180: \"Ringing\",\n    181: \"Call Is Being Forwarded\",\n    182: \"Queued\",\n    183: \"Session Progress\",\n    199: \"Early Dialog Terminated\",\n    200: \"OK\",\n    202: \"Accepted\",\n    204: \"No Notification\",\n    300: \"Multiple Choices\",\n    301: \"Moved Permanently\",\n    302: \"Moved Temporarily\",\n    305: \"Use Proxy\",\n    380: \"Alternative Service\",\n    400: \"Bad Request\",\n    401: \"Unauthorized\",\n    402: \"Payment Required\",\n    403: \"Forbidden\",\n    404: \"Not Found\",\n    405: \"Method Not Allowed\",\n    406: \"Not Acceptable\",\n    407: \"Proxy Authentication Required\",\n    408: \"Request Timeout\",\n    410: \"Gone\",\n    412: \"Conditional Request Failed\",\n    413: \"Request Entity Too Large\",\n    414: \"Request-URI Too Long\",\n    415: \"Unsupported Media Type\",\n    416: \"Unsupported URI Scheme\",\n    417: \"Unknown Resource-Priority\",\n    420: \"Bad Extension\",\n    421: \"Extension Required\",\n    422: \"Session Interval Too Small\",\n    423: \"Interval Too Brief\",\n    428: \"Use Identity Header\",\n    429: \"Provide Referrer Identity\",\n    430: \"Flow Failed\",\n    433: \"Anonymity Disallowed\",\n    436: \"Bad Identity-Info\",\n    437: \"Unsupported Certificate\",\n    438: \"Invalid Identity Header\",\n    439: \"First Hop Lacks Outbound Support\",\n    440: \"Max-Breadth Exceeded\",\n    469: \"Bad Info Package\",\n    470: \"Consent Needed\",\n    478: \"Unresolvable Destination\",\n    480: \"Temporarily Unavailable\",\n    481: \"Call/Transaction Does Not Exist\",\n    482: \"Loop Detected\",\n    483: \"Too Many Hops\",\n    484: \"Address Incomplete\",\n    485: \"Ambiguous\",\n    486: \"Busy Here\",\n    487: \"Request Terminated\",\n    488: \"Not Acceptable Here\",\n    489: \"Bad Event\",\n    491: \"Request Pending\",\n    493: \"Undecipherable\",\n    494: \"Security Agreement Required\",\n    500: \"Internal Server Error\",\n    501: \"Not Implemented\",\n    502: \"Bad Gateway\",\n    503: \"Service Unavailable\",\n    504: \"Server Time-out\",\n    505: \"Version Not Supported\",\n    513: \"Message Too Large\",\n    580: \"Precondition Failure\",\n    600: \"Busy Everywhere\",\n    603: \"Decline\",\n    604: \"Does Not Exist Anywhere\",\n    606: \"Not Acceptable\"\n};\n/**\n * @param size -\n * @param base -\n * @internal\n */\nexport function createRandomToken(size, base = 32) {\n    let token = \"\";\n    for (let i = 0; i < size; i++) {\n        const r = Math.floor(Math.random() * base);\n        token += r.toString(base);\n    }\n    return token;\n}\n/**\n * @internal\n */\nexport function getReasonPhrase(code) {\n    return REASON_PHRASE[code] || \"\";\n}\n/**\n * @internal\n */\nexport function newTag() {\n    return createRandomToken(10);\n}\n/**\n * @param str -\n * @internal\n */\nexport function headerize(str) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const exceptions = {\n        \"Call-Id\": \"Call-ID\",\n        Cseq: \"CSeq\",\n        \"Min-Se\": \"Min-SE\",\n        Rack: \"RAck\",\n        Rseq: \"RSeq\",\n        \"Www-Authenticate\": \"WWW-Authenticate\"\n    };\n    const name = str.toLowerCase().replace(/_/g, \"-\").split(\"-\");\n    const parts = name.length;\n    let hname = \"\";\n    for (let part = 0; part < parts; part++) {\n        if (part !== 0) {\n            hname += \"-\";\n        }\n        hname += name[part].charAt(0).toUpperCase() + name[part].substring(1);\n    }\n    if (exceptions[hname]) {\n        hname = exceptions[hname];\n    }\n    return hname;\n}\n/**\n * @param str -\n * @internal\n */\nexport function utf8Length(str) {\n    return encodeURIComponent(str).replace(/%[A-F\\d]{2}/g, \"U\").length;\n}\n","import { IncomingMessage } from \"./incoming-message.js\";\n/**\n * Incoming response message.\n * @public\n */\nexport class IncomingResponseMessage extends IncomingMessage {\n    constructor() {\n        super();\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { createRandomToken, headerize, newTag, utf8Length } from \"./utils.js\";\n/**\n * Outgoing SIP request message.\n * @public\n */\nexport class OutgoingRequestMessage {\n    constructor(method, ruri, fromURI, toURI, options, extraHeaders, body) {\n        this.headers = {};\n        this.extraHeaders = [];\n        // Initialize default options\n        this.options = OutgoingRequestMessage.getDefaultOptions();\n        // Options - merge a deep copy\n        if (options) {\n            this.options = Object.assign(Object.assign({}, this.options), options);\n            if (this.options.optionTags && this.options.optionTags.length) {\n                this.options.optionTags = this.options.optionTags.slice();\n            }\n            if (this.options.routeSet && this.options.routeSet.length) {\n                this.options.routeSet = this.options.routeSet.slice();\n            }\n        }\n        // Extra headers - deep copy\n        if (extraHeaders && extraHeaders.length) {\n            this.extraHeaders = extraHeaders.slice();\n        }\n        // Body - deep copy\n        if (body) {\n            // TODO: internal representation should be Body\n            // this.body = { ...body };\n            this.body = {\n                body: body.content,\n                contentType: body.contentType\n            };\n        }\n        // Method\n        this.method = method;\n        // RURI\n        this.ruri = ruri.clone();\n        // From\n        this.fromURI = fromURI.clone();\n        this.fromTag = this.options.fromTag ? this.options.fromTag : newTag();\n        this.from = OutgoingRequestMessage.makeNameAddrHeader(this.fromURI, this.options.fromDisplayName, this.fromTag);\n        // To\n        this.toURI = toURI.clone();\n        this.toTag = this.options.toTag;\n        this.to = OutgoingRequestMessage.makeNameAddrHeader(this.toURI, this.options.toDisplayName, this.toTag);\n        // Call-ID\n        this.callId = this.options.callId ? this.options.callId : this.options.callIdPrefix + createRandomToken(15);\n        // CSeq\n        this.cseq = this.options.cseq;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        this.setHeader(\"route\", this.options.routeSet);\n        this.setHeader(\"via\", \"\");\n        this.setHeader(\"to\", this.to.toString());\n        this.setHeader(\"from\", this.from.toString());\n        this.setHeader(\"cseq\", this.cseq + \" \" + this.method);\n        this.setHeader(\"call-id\", this.callId);\n        this.setHeader(\"max-forwards\", \"70\");\n    }\n    /** Get a copy of the default options. */\n    static getDefaultOptions() {\n        return {\n            callId: \"\",\n            callIdPrefix: \"\",\n            cseq: 1,\n            toDisplayName: \"\",\n            toTag: \"\",\n            fromDisplayName: \"\",\n            fromTag: \"\",\n            forceRport: false,\n            hackViaTcp: false,\n            optionTags: [\"outbound\"],\n            routeSet: [],\n            userAgentString: \"sip.js\",\n            viaHost: \"\"\n        };\n    }\n    static makeNameAddrHeader(uri, displayName, tag) {\n        const parameters = {};\n        if (tag) {\n            parameters.tag = tag;\n        }\n        return new NameAddrHeader(uri, displayName, parameters);\n    }\n    /**\n     * Get the value of the given header name at the given position.\n     * @param name - header name\n     * @returns Returns the specified header, undefined if header doesn't exist.\n     */\n    getHeader(name) {\n        const header = this.headers[headerize(name)];\n        if (header) {\n            if (header[0]) {\n                return header[0];\n            }\n        }\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders) {\n                if (regexp.test(exHeader)) {\n                    return exHeader.substring(exHeader.indexOf(\":\") + 1).trim();\n                }\n            }\n        }\n        return;\n    }\n    /**\n     * Get the header/s of the given name.\n     * @param name - header name\n     * @returns Array with all the headers of the specified name.\n     */\n    getHeaders(name) {\n        const result = [];\n        const headerArray = this.headers[headerize(name)];\n        if (headerArray) {\n            for (const headerPart of headerArray) {\n                result.push(headerPart);\n            }\n        }\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const exHeader of this.extraHeaders) {\n                if (regexp.test(exHeader)) {\n                    result.push(exHeader.substring(exHeader.indexOf(\":\") + 1).trim());\n                }\n            }\n        }\n        return result;\n    }\n    /**\n     * Verify the existence of the given header.\n     * @param name - header name\n     * @returns true if header with given name exists, false otherwise\n     */\n    hasHeader(name) {\n        if (this.headers[headerize(name)]) {\n            return true;\n        }\n        else {\n            const regexp = new RegExp(\"^\\\\s*\" + name + \"\\\\s*:\", \"i\");\n            for (const extraHeader of this.extraHeaders) {\n                if (regexp.test(extraHeader)) {\n                    return true;\n                }\n            }\n        }\n        return false;\n    }\n    /**\n     * Replace the the given header by the given value.\n     * @param name - header name\n     * @param value - header value\n     */\n    setHeader(name, value) {\n        this.headers[headerize(name)] = value instanceof Array ? value : [value];\n    }\n    /**\n     * The Via header field indicates the transport used for the transaction\n     * and identifies the location where the response is to be sent.  A Via\n     * header field value is added only after the transport that will be\n     * used to reach the next hop has been selected (which may involve the\n     * usage of the procedures in [4]).\n     *\n     * When the UAC creates a request, it MUST insert a Via into that\n     * request.  The protocol name and protocol version in the header field\n     * MUST be SIP and 2.0, respectively.  The Via header field value MUST\n     * contain a branch parameter.  This parameter is used to identify the\n     * transaction created by that request.  This parameter is used by both\n     * the client and the server.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n     * @param branchParameter - The branch parameter.\n     * @param transport - The sent protocol transport.\n     */\n    setViaHeader(branch, transport) {\n        // FIXME: Hack\n        if (this.options.hackViaTcp) {\n            transport = \"TCP\";\n        }\n        let via = \"SIP/2.0/\" + transport;\n        via += \" \" + this.options.viaHost + \";branch=\" + branch;\n        if (this.options.forceRport) {\n            via += \";rport\";\n        }\n        this.setHeader(\"via\", via);\n        this.branch = branch;\n    }\n    toString() {\n        let msg = \"\";\n        msg += this.method + \" \" + this.ruri.toRaw() + \" SIP/2.0\\r\\n\";\n        for (const header in this.headers) {\n            if (this.headers[header]) {\n                for (const headerPart of this.headers[header]) {\n                    msg += header + \": \" + headerPart + \"\\r\\n\";\n                }\n            }\n        }\n        for (const header of this.extraHeaders) {\n            msg += header.trim() + \"\\r\\n\";\n        }\n        msg += \"Supported: \" + this.options.optionTags.join(\", \") + \"\\r\\n\";\n        msg += \"User-Agent: \" + this.options.userAgentString + \"\\r\\n\";\n        if (this.body) {\n            if (typeof this.body === \"string\") {\n                msg += \"Content-Length: \" + utf8Length(this.body) + \"\\r\\n\\r\\n\";\n                msg += this.body;\n            }\n            else {\n                if (this.body.body && this.body.contentType) {\n                    msg += \"Content-Type: \" + this.body.contentType + \"\\r\\n\";\n                    msg += \"Content-Length: \" + utf8Length(this.body.body) + \"\\r\\n\\r\\n\";\n                    msg += this.body.body;\n                }\n                else {\n                    msg += \"Content-Length: \" + 0 + \"\\r\\n\\r\\n\";\n                }\n            }\n        }\n        else {\n            msg += \"Content-Length: \" + 0 + \"\\r\\n\\r\\n\";\n        }\n        return msg;\n    }\n}\n","/**\n * Session state.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-13\n * @public\n */\nexport var SessionState;\n(function (SessionState) {\n    SessionState[\"Initial\"] = \"Initial\";\n    SessionState[\"Early\"] = \"Early\";\n    SessionState[\"AckWait\"] = \"AckWait\";\n    SessionState[\"Confirmed\"] = \"Confirmed\";\n    SessionState[\"Terminated\"] = \"Terminated\";\n})(SessionState = SessionState || (SessionState = {}));\n/**\n * Offer/Answer state.\n * @remarks\n * ```txt\n *         Offer                Answer             RFC    Ini Est Early\n *  -------------------------------------------------------------------\n *  1. INVITE Req.          2xx INVITE Resp.     RFC 3261  Y   Y    N\n *  2. 2xx INVITE Resp.     ACK Req.             RFC 3261  Y   Y    N\n *  3. INVITE Req.          1xx-rel INVITE Resp. RFC 3262  Y   Y    N\n *  4. 1xx-rel INVITE Resp. PRACK Req.           RFC 3262  Y   Y    N\n *  5. PRACK Req.           200 PRACK Resp.      RFC 3262  N   Y    Y\n *  6. UPDATE Req.          2xx UPDATE Resp.     RFC 3311  N   Y    Y\n *\n *       Table 1: Summary of SIP Usage of the Offer/Answer Model\n * ```\n * https://tools.ietf.org/html/rfc6337#section-2.2\n * @public\n */\nexport var SignalingState;\n(function (SignalingState) {\n    SignalingState[\"Initial\"] = \"Initial\";\n    SignalingState[\"HaveLocalOffer\"] = \"HaveLocalOffer\";\n    SignalingState[\"HaveRemoteOffer\"] = \"HaveRemoteOffer\";\n    SignalingState[\"Stable\"] = \"Stable\";\n    SignalingState[\"Closed\"] = \"Closed\";\n})(SignalingState = SignalingState || (SignalingState = {}));\n","const T1 = 500;\nconst T2 = 4000;\nconst T4 = 5000;\n/**\n * Timers.\n * @public\n */\nexport const Timers = {\n    T1,\n    T2,\n    T4,\n    TIMER_B: 64 * T1,\n    TIMER_D: 0 * T1,\n    TIMER_F: 64 * T1,\n    TIMER_H: 64 * T1,\n    TIMER_I: 0 * T4,\n    TIMER_J: 0 * T1,\n    TIMER_K: 0 * T4,\n    TIMER_L: 64 * T1,\n    TIMER_M: 64 * T1,\n    TIMER_N: 64 * T1,\n    PROVISIONAL_RESPONSE_INTERVAL: 60000 // See RFC 3261 Section 13.3.1.1\n};\n","import { Exception } from \"./exception.js\";\n/**\n * Indicates that the operation could not be completed given the current transaction state.\n * @public\n */\nexport class TransactionStateError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Transaction state error.\");\n    }\n}\n","/**\n * An Exception is considered a condition that a reasonable application may wish to catch.\n * An Error indicates serious problems that a reasonable application should not try to catch.\n * @public\n */\nexport class Exception extends Error {\n    constructor(message) {\n        super(message); // 'Error' breaks prototype chain here\n        Object.setPrototypeOf(this, new.target.prototype); // restore prototype chain\n    }\n}\n","/**\n * A request to reject an {@link Invitation} (incoming CANCEL).\n * @public\n */\nexport class Cancel {\n    /** @internal */\n    constructor(incomingCancelRequest) {\n        this.incomingCancelRequest = incomingCancelRequest;\n    }\n    /** Incoming CANCEL request message. */\n    get request() {\n        return this.incomingCancelRequest;\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating an unsupported content type prevented execution.\n * @public\n */\nexport class ContentTypeUnsupportedError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Unsupported content type.\");\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating a session description handler error occured.\n * @public\n */\nexport class SessionDescriptionHandlerError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Unspecified session description handler error.\");\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating the session terminated before the action completed.\n * @public\n */\nexport class SessionTerminatedError extends Exception {\n    constructor() {\n        super(\"The session has terminated.\");\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { URI } from \"../grammar/uri.js\";\nimport { fromBodyLegacy, getBody } from \"../core/messages/body.js\";\nimport { SessionState as SessionDialogState, SignalingState } from \"../core/session/session.js\";\nimport { getReasonPhrase } from \"../core/messages/utils.js\";\nimport { AllowedMethods } from \"../core/user-agent-core/allowed-methods.js\";\nimport { Ack } from \"./ack.js\";\nimport { Bye } from \"./bye.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { ContentTypeUnsupportedError } from \"./exceptions/content-type-unsupported.js\";\nimport { RequestPendingError } from \"./exceptions/request-pending.js\";\nimport { Info } from \"./info.js\";\nimport { Message } from \"./message.js\";\nimport { Notification } from \"./notification.js\";\nimport { Referral } from \"./referral.js\";\nimport { SessionState } from \"./session-state.js\";\n/**\n * A session provides real time communication between one or more participants.\n *\n * @remarks\n * The transport behaves in a deterministic manner according to the\n * the state defined in {@link SessionState}.\n * @public\n */\nexport class Session {\n    /**\n     * Constructor.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @internal\n     */\n    constructor(userAgent, options = {}) {\n        /** True if there is an outgoing re-INVITE request outstanding. */\n        this.pendingReinvite = false;\n        /** True if there is an incoming re-INVITE ACK request outstanding. */\n        this.pendingReinviteAck = false;\n        /** Session state. */\n        this._state = SessionState.Initial;\n        this.delegate = options.delegate;\n        this._stateEventEmitter = new EmitterImpl();\n        this._userAgent = userAgent;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        this.logger.log(`Session ${this.id} in state ${this._state} is being disposed`);\n        // Remove from the user agent's session collection\n        delete this.userAgent._sessions[this.id];\n        // Dispose of dialog media\n        if (this._sessionDescriptionHandler) {\n            this._sessionDescriptionHandler.close();\n            // TODO: The SDH needs to remain defined as it will be called after it is closed in cases\n            // where an answer/offer arrives while the session is being torn down. There are a variety\n            // of circumstances where this can happen - sending a BYE during a re-INVITE for example.\n            // The code is currently written such that it lazily makes a new SDH when it needs one\n            // and one is not yet defined. Thus if we undefined it here, it will currently make a\n            // new one which is out of sync and then never gets cleaned up.\n            //\n            // The downside of leaving it defined are that calls this closed SDH will continue to be\n            // made (think setDescription) and those should/will fail. These failures are handled, but\n            // it would be nice to have it all coded up in a way where having an undefined SDH where\n            // one is expected throws an error.\n            //\n            // this._sessionDescriptionHandler = undefined;\n        }\n        switch (this.state) {\n            case SessionState.Initial:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case SessionState.Establishing:\n                break; // the Inviter/Invitation sub class dispose method handles this case\n            case SessionState.Established:\n                return new Promise((resolve) => {\n                    this._bye({\n                        // wait for the response to the BYE before resolving\n                        onAccept: () => resolve(),\n                        onRedirect: () => resolve(),\n                        onReject: () => resolve()\n                    });\n                });\n            case SessionState.Terminating:\n                break; // nothing to be done\n            case SessionState.Terminated:\n                break; // nothing to be done\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        return Promise.resolve();\n    }\n    /**\n     * The asserted identity of the remote user.\n     */\n    get assertedIdentity() {\n        return this._assertedIdentity;\n    }\n    /**\n     * The confirmed session dialog.\n     */\n    get dialog() {\n        return this._dialog;\n    }\n    /**\n     * A unique identifier for this session.\n     */\n    get id() {\n        return this._id;\n    }\n    /**\n     * The session being replace by this one.\n     */\n    get replacee() {\n        return this._replacee;\n    }\n    /**\n     * Session description handler.\n     * @remarks\n     * If `this` is an instance of `Invitation`,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * If `this` is an instance of `Inviter` and an offer was sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"establishing\".\n     * If `this` is an instance of `Inviter` and an offer was not sent in the INVITE,\n     * `sessionDescriptionHandler` will be defined when the session state changes to \"established\".\n     * Otherwise `undefined`.\n     */\n    get sessionDescriptionHandler() {\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Session description handler factory.\n     */\n    get sessionDescriptionHandlerFactory() {\n        return this.userAgent.configuration.sessionDescriptionHandlerFactory;\n    }\n    /**\n     * SDH modifiers for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */\n    get sessionDescriptionHandlerModifiers() {\n        return this._sessionDescriptionHandlerModifiers || [];\n    }\n    set sessionDescriptionHandlerModifiers(modifiers) {\n        this._sessionDescriptionHandlerModifiers = modifiers.slice();\n    }\n    /**\n     * SDH options for the initial INVITE transaction.\n     * @remarks\n     * Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n     */\n    get sessionDescriptionHandlerOptions() {\n        return this._sessionDescriptionHandlerOptions || {};\n    }\n    set sessionDescriptionHandlerOptions(options) {\n        this._sessionDescriptionHandlerOptions = Object.assign({}, options);\n    }\n    /**\n     * SDH modifiers for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */\n    get sessionDescriptionHandlerModifiersReInvite() {\n        return this._sessionDescriptionHandlerModifiersReInvite || [];\n    }\n    set sessionDescriptionHandlerModifiersReInvite(modifiers) {\n        this._sessionDescriptionHandlerModifiersReInvite = modifiers.slice();\n    }\n    /**\n     * SDH options for re-INVITE transactions.\n     * @remarks\n     * Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n     * May be set directly at anytime.\n     * May optionally be set via constructor option.\n     * May optionally be set via options passed to Session.invite().\n     */\n    get sessionDescriptionHandlerOptionsReInvite() {\n        return this._sessionDescriptionHandlerOptionsReInvite || {};\n    }\n    set sessionDescriptionHandlerOptionsReInvite(options) {\n        this._sessionDescriptionHandlerOptionsReInvite = Object.assign({}, options);\n    }\n    /**\n     * Session state.\n     */\n    get state() {\n        return this._state;\n    }\n    /**\n     * Session state change emitter.\n     */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The user agent.\n     */\n    get userAgent() {\n        return this._userAgent;\n    }\n    /**\n     * End the {@link Session}. Sends a BYE.\n     * @param options - Options bucket. See {@link SessionByeOptions} for details.\n     */\n    bye(options = {}) {\n        let message = \"Session.bye() may only be called if established session.\";\n        switch (this.state) {\n            case SessionState.Initial:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However Inviter.invite() has not yet been called.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                }\n                else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called.\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case SessionState.Establishing:\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" However a dialog does not yet exist.\";\n                    message += \" Perhaps you should have called Inviter.cancel()?\";\n                    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                }\n                else if (typeof this.reject === \"function\") {\n                    message += \" However Invitation.accept() has not yet been called (or not yet resolved).\";\n                    message += \" Perhaps you should have called Invitation.reject()?\";\n                }\n                break;\n            case SessionState.Established: {\n                const requestDelegate = options.requestDelegate;\n                const requestOptions = this.copyRequestOptions(options.requestOptions);\n                return this._bye(requestDelegate, requestOptions);\n            }\n            case SessionState.Terminating:\n                message += \" However this session is already terminating.\";\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                if (typeof this.cancel === \"function\") {\n                    message += \" Perhaps you have already called Inviter.cancel()?\";\n                    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                }\n                else if (typeof this.reject === \"function\") {\n                    message += \" Perhaps you have already called Session.bye()?\";\n                }\n                break;\n            case SessionState.Terminated:\n                message += \" However this session is already terminated.\";\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        this.logger.error(message);\n        return Promise.reject(new Error(`Invalid session state ${this.state}`));\n    }\n    /**\n     * Share {@link Info} with peer. Sends an INFO.\n     * @param options - Options bucket. See {@link SessionInfoOptions} for details.\n     */\n    info(options = {}) {\n        // guard session state\n        if (this.state !== SessionState.Established) {\n            const message = \"Session.info() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._info(requestDelegate, requestOptions);\n    }\n    /**\n     * Renegotiate the session. Sends a re-INVITE.\n     * @param options - Options bucket. See {@link SessionInviteOptions} for details.\n     */\n    invite(options = {}) {\n        this.logger.log(\"Session.invite\");\n        if (this.state !== SessionState.Established) {\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        if (this.pendingReinvite) {\n            return Promise.reject(new RequestPendingError(\"Reinvite in progress. Please wait until complete, then try again.\"));\n        }\n        this.pendingReinvite = true;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptions;\n        }\n        const delegate = {\n            onAccept: (response) => {\n                // A re-INVITE transaction has an offer/answer [RFC3264] exchange\n                // associated with it.  The UAC (User Agent Client) generating a given\n                // re-INVITE can act as the offerer or as the answerer.  A UAC willing\n                // to act as the offerer includes an offer in the re-INVITE.  The UAS\n                // (User Agent Server) then provides an answer in a response to the\n                // re-INVITE.  A UAC willing to act as answerer does not include an\n                // offer in the re-INVITE.  The UAS then provides an offer in a response\n                // to the re-INVITE becoming, thus, the offerer.\n                // https://tools.ietf.org/html/rfc6141#section-1\n                const body = getBody(response.message);\n                if (!body) {\n                    // No way to recover, so terminate session and mark as failed.\n                    this.logger.error(\"Received 2xx response to re-INVITE without a session description\");\n                    this.ackAndBye(response, 400, \"Missing session description\");\n                    this.stateTransition(SessionState.Terminated);\n                    this.pendingReinvite = false;\n                    return;\n                }\n                if (options.withoutSdp) {\n                    // INVITE without SDP - set remote offer and send an answer in the ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setOfferAndGetAnswer(body, answerOptions)\n                        .then((answerBody) => {\n                        response.ack({ body: answerBody });\n                    })\n                        .catch((error) => {\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle offer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        if (this.state === SessionState.Terminated) {\n                            // A BYE should not be sent if already terminated.\n                            // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                            response.ack();\n                        }\n                        else {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition(SessionState.Terminated);\n                        }\n                    })\n                        .then(() => {\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) {\n                            options.requestDelegate.onAccept(response);\n                        }\n                    });\n                }\n                else {\n                    // INVITE with SDP - set remote answer and send an ACK\n                    const answerOptions = {\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n                    };\n                    this.setAnswer(body, answerOptions)\n                        .then(() => {\n                        response.ack();\n                    })\n                        .catch((error) => {\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to handle answer in 2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        // A BYE should only be sent if session is not already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        // The ACK needs to be sent regardless as it was not handled by the transaction.\n                        if (this.state !== SessionState.Terminated) {\n                            this.ackAndBye(response, 488, \"Bad Media Description\");\n                            this.stateTransition(SessionState.Terminated);\n                        }\n                        else {\n                            response.ack();\n                        }\n                    })\n                        .then(() => {\n                        this.pendingReinvite = false;\n                        if (options.requestDelegate && options.requestDelegate.onAccept) {\n                            options.requestDelegate.onAccept(response);\n                        }\n                    });\n                }\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onProgress: (response) => {\n                return;\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onRedirect: (response) => {\n                return;\n            },\n            onReject: (response) => {\n                this.logger.warn(\"Received a non-2xx response to re-INVITE\");\n                this.pendingReinvite = false;\n                if (options.withoutSdp) {\n                    if (options.requestDelegate && options.requestDelegate.onReject) {\n                        options.requestDelegate.onReject(response);\n                    }\n                }\n                else {\n                    this.rollbackOffer()\n                        .catch((error) => {\n                        // No way to recover, so terminate session and mark as failed.\n                        this.logger.error(\"Failed to rollback offer on non-2xx response to re-INVITE\");\n                        this.logger.error(error.message);\n                        // A BYE should only be sent if session is not already terminated.\n                        // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                        // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                        if (this.state !== SessionState.Terminated) {\n                            if (!this.dialog) {\n                                throw new Error(\"Dialog undefined.\");\n                            }\n                            const extraHeaders = [];\n                            extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                            this.dialog.bye(undefined, { extraHeaders });\n                            this.stateTransition(SessionState.Terminated);\n                        }\n                    })\n                        .then(() => {\n                        if (options.requestDelegate && options.requestDelegate.onReject) {\n                            options.requestDelegate.onReject(response);\n                        }\n                    });\n                }\n            },\n            // eslint-disable-next-line @typescript-eslint/no-unused-vars\n            onTrying: (response) => {\n                return;\n            }\n        };\n        const requestOptions = options.requestOptions || {};\n        requestOptions.extraHeaders = (requestOptions.extraHeaders || []).slice();\n        requestOptions.extraHeaders.push(\"Allow: \" + AllowedMethods.toString());\n        requestOptions.extraHeaders.push(\"Contact: \" + this._contact);\n        // Just send an INVITE with no sdp...\n        if (options.withoutSdp) {\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            return Promise.resolve(this.dialog.invite(delegate, requestOptions));\n        }\n        // Get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        return this.getOffer(offerOptions)\n            .then((offerBody) => {\n            if (!this.dialog) {\n                this.pendingReinvite = false;\n                throw new Error(\"Dialog undefined.\");\n            }\n            requestOptions.body = offerBody;\n            return this.dialog.invite(delegate, requestOptions);\n        })\n            .catch((error) => {\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to send re-INVITE\");\n            this.pendingReinvite = false;\n            throw error;\n        });\n    }\n    /**\n     * Deliver a {@link Message}. Sends a MESSAGE.\n     * @param options - Options bucket. See {@link SessionMessageOptions} for details.\n     */\n    message(options = {}) {\n        // guard session state\n        if (this.state !== SessionState.Established) {\n            const message = \"Session.message() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        return this._message(requestDelegate, requestOptions);\n    }\n    /**\n     * Proffer a {@link Referral}. Send a REFER.\n     * @param referTo - The referral target. If a `Session`, a REFER w/Replaces is sent.\n     * @param options - Options bucket. See {@link SessionReferOptions} for details.\n     */\n    refer(referTo, options = {}) {\n        // guard session state\n        if (this.state !== SessionState.Established) {\n            const message = \"Session.refer() may only be called if established session.\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        // REFER with Replaces (Attended Transfer) only supported with established sessions.\n        if (referTo instanceof Session && !referTo.dialog) {\n            const message = \"Session.refer() may only be called with session which is established. \" +\n                \"You are perhaps attempting to attended transfer to a target for which \" +\n                \"there is not dialog yet established. Perhaps you are attempting a \" +\n                \"'semi-attended' tansfer? Regardless, this is not supported. The recommended \" +\n                \"approached is to check to see if the target Session is in the Established \" +\n                \"state before calling refer(); if the state is not Established you may \" +\n                \"proceed by falling back using a URI as the target (blind transfer).\";\n            this.logger.error(message);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const requestDelegate = options.requestDelegate;\n        const requestOptions = this.copyRequestOptions(options.requestOptions);\n        requestOptions.extraHeaders = requestOptions.extraHeaders\n            ? requestOptions.extraHeaders.concat(this.referExtraHeaders(this.referToString(referTo)))\n            : this.referExtraHeaders(this.referToString(referTo));\n        return this._refer(options.onNotify, requestDelegate, requestOptions);\n    }\n    /**\n     * Send BYE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _bye(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        const dialog = this.dialog;\n        // The caller's UA MAY send a BYE for either confirmed or early dialogs,\n        // and the callee's UA MAY send a BYE on confirmed dialogs, but MUST NOT\n        // send a BYE on early dialogs. However, the callee's UA MUST NOT send a\n        // BYE on a confirmed dialog until it has received an ACK for its 2xx\n        // response or until the server transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        switch (dialog.sessionState) {\n            case SessionDialogState.Initial:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case SessionDialogState.Early: // Implementation choice - not sending BYE for early dialogs.\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            case SessionDialogState.AckWait: {\n                // This state only occurs if we are the callee.\n                this.stateTransition(SessionState.Terminating); // We're terminating\n                return new Promise((resolve) => {\n                    dialog.delegate = {\n                        // When ACK shows up, say BYE.\n                        onAck: () => {\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition(SessionState.Terminated);\n                            resolve(request);\n                            return Promise.resolve();\n                        },\n                        // Or the server transaction times out before the ACK arrives.\n                        onAckTimeout: () => {\n                            const request = dialog.bye(delegate, options);\n                            this.stateTransition(SessionState.Terminated);\n                            resolve(request);\n                        }\n                    };\n                });\n            }\n            case SessionDialogState.Confirmed: {\n                const request = dialog.bye(delegate, options);\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve(request);\n            }\n            case SessionDialogState.Terminated:\n                throw new Error(`Invalid dialog state ${dialog.sessionState}`);\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n    }\n    /**\n     * Send INFO.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _info(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        return Promise.resolve(this.dialog.info(delegate, options));\n    }\n    /**\n     * Send MESSAGE.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _message(delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        return Promise.resolve(this.dialog.message(delegate, options));\n    }\n    /**\n     * Send REFER.\n     * @param onNotify - Notification callback.\n     * @param delegate - Request delegate.\n     * @param options - Request options bucket.\n     * @internal\n     */\n    _refer(onNotify, delegate, options) {\n        // Using core session dialog\n        if (!this.dialog) {\n            return Promise.reject(new Error(\"Session dialog undefined.\"));\n        }\n        // If set, deliver any in-dialog NOTIFY requests here...\n        this.onNotify = onNotify;\n        return Promise.resolve(this.dialog.refer(delegate, options));\n    }\n    /**\n     * Send ACK and then BYE. There are unrecoverable errors which can occur\n     * while handling dialog forming and in-dialog INVITE responses and when\n     * they occur we ACK the response and send a BYE.\n     * Note that the BYE is sent in the dialog associated with the response\n     * which is not necessarily `this.dialog`. And, accordingly, the\n     * session state is not transitioned to terminated and session is not closed.\n     * @param inviteResponse - The response causing the error.\n     * @param statusCode - Status code for he reason phrase.\n     * @param reasonPhrase - Reason phrase for the BYE.\n     * @internal\n     */\n    ackAndBye(response, statusCode, reasonPhrase) {\n        response.ack();\n        const extraHeaders = [];\n        if (statusCode) {\n            extraHeaders.push(\"Reason: \" + this.getReasonHeaderValue(statusCode, reasonPhrase));\n        }\n        // Using the dialog session associate with the response (which might not be this.dialog)\n        response.session.bye(undefined, { extraHeaders });\n    }\n    /**\n     * Handle in dialog ACK request.\n     * @internal\n     */\n    onAckRequest(request) {\n        this.logger.log(\"Session.onAckRequest\");\n        if (this.state !== SessionState.Established && this.state !== SessionState.Terminating) {\n            this.logger.error(`ACK received while in state ${this.state}, dropping request`);\n            return Promise.resolve();\n        }\n        const dialog = this.dialog;\n        if (!dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        // if received answer in ACK.\n        const answerOptions = {\n            sessionDescriptionHandlerOptions: this.pendingReinviteAck\n                ? this.sessionDescriptionHandlerOptionsReInvite\n                : this.sessionDescriptionHandlerOptions,\n            sessionDescriptionHandlerModifiers: this.pendingReinviteAck\n                ? this._sessionDescriptionHandlerModifiersReInvite\n                : this._sessionDescriptionHandlerModifiers\n        };\n        if (this.delegate && this.delegate.onAck) {\n            const ack = new Ack(request);\n            this.delegate.onAck(ack);\n        }\n        // reset pending ACK flag\n        this.pendingReinviteAck = false;\n        switch (dialog.signalingState) {\n            case SignalingState.Initial: {\n                // State should never be reached as first reliable response must have answer/offer.\n                // So we must have never has sent an offer.\n                this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                dialog.bye(undefined, { extraHeaders });\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve();\n            }\n            case SignalingState.Stable: {\n                // State we should be in.\n                // Either the ACK has the answer that got us here, or we were in this state prior to the ACK.\n                const body = getBody(request.message);\n                // If the ACK doesn't have an answer, nothing to be done.\n                if (!body) {\n                    return Promise.resolve();\n                }\n                if (body.contentDisposition === \"render\") {\n                    this._renderbody = body.content;\n                    this._rendertype = body.contentType;\n                    return Promise.resolve();\n                }\n                if (body.contentDisposition !== \"session\") {\n                    return Promise.resolve();\n                }\n                return this.setAnswer(body, answerOptions).catch((error) => {\n                    this.logger.error(error.message);\n                    const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                    dialog.bye(undefined, { extraHeaders });\n                    this.stateTransition(SessionState.Terminated);\n                });\n            }\n            case SignalingState.HaveLocalOffer: {\n                // State should never be reached as local offer would be answered by this ACK.\n                // So we must have received an ACK without an answer.\n                this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                dialog.bye(undefined, { extraHeaders });\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve();\n            }\n            case SignalingState.HaveRemoteOffer: {\n                // State should never be reached as remote offer would be answered in first reliable response.\n                // So we must have never has sent an answer.\n                this.logger.error(`Invalid signaling state ${dialog.signalingState}.`);\n                const extraHeaders = [\"Reason: \" + this.getReasonHeaderValue(488, \"Bad Media Description\")];\n                dialog.bye(undefined, { extraHeaders });\n                this.stateTransition(SessionState.Terminated);\n                return Promise.resolve();\n            }\n            case SignalingState.Closed:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Handle in dialog BYE request.\n     * @internal\n     */\n    onByeRequest(request) {\n        this.logger.log(\"Session.onByeRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`BYE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onBye) {\n            const bye = new Bye(request);\n            this.delegate.onBye(bye);\n        }\n        else {\n            request.accept();\n        }\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Handle in dialog INFO request.\n     * @internal\n     */\n    onInfoRequest(request) {\n        this.logger.log(\"Session.onInfoRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`INFO received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onInfo) {\n            const info = new Info(request);\n            this.delegate.onInfo(info);\n        }\n        else {\n            // FIXME: TODO: We should reject request...\n            //\n            // If a UA receives an INFO request associated with an Info Package that\n            // the UA has not indicated willingness to receive, the UA MUST send a\n            // 469 (Bad Info Package) response (see Section 11.6), which contains a\n            // Recv-Info header field with Info Packages for which the UA is willing\n            // to receive INFO requests.\n            // https://tools.ietf.org/html/rfc6086#section-4.2.2\n            request.accept();\n        }\n    }\n    /**\n     * Handle in dialog INVITE request.\n     * @internal\n     */\n    onInviteRequest(request) {\n        this.logger.log(\"Session.onInviteRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`INVITE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // set pending ACK flag\n        this.pendingReinviteAck = true;\n        // TODO: would be nice to have core track and set the Contact header,\n        // but currently the session which is setting it is holding onto it.\n        const extraHeaders = [\"Contact: \" + this._contact];\n        // Handle P-Asserted-Identity\n        if (request.message.hasHeader(\"P-Asserted-Identity\")) {\n            const header = request.message.getHeader(\"P-Asserted-Identity\");\n            if (!header) {\n                throw new Error(\"Header undefined.\");\n            }\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(header);\n        }\n        const options = {\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptionsReInvite,\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiersReInvite\n        };\n        this.generateResponseOfferAnswerInDialog(options)\n            .then((body) => {\n            const outgoingResponse = request.accept({ statusCode: 200, extraHeaders, body });\n            if (this.delegate && this.delegate.onInvite) {\n                this.delegate.onInvite(request.message, outgoingResponse.message, 200);\n            }\n        })\n            .catch((error) => {\n            this.logger.error(error.message);\n            this.logger.error(\"Failed to handle to re-INVITE request\");\n            if (!this.dialog) {\n                throw new Error(\"Dialog undefined.\");\n            }\n            this.logger.error(this.dialog.signalingState);\n            // If we don't have a local/remote offer...\n            if (this.dialog.signalingState === SignalingState.Stable) {\n                const outgoingResponse = request.reject({ statusCode: 488 }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) {\n                    this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                }\n                return;\n            }\n            // Otherwise rollback\n            this.rollbackOffer()\n                .then(() => {\n                const outgoingResponse = request.reject({ statusCode: 488 }); // Not Acceptable Here\n                if (this.delegate && this.delegate.onInvite) {\n                    this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                }\n            })\n                .catch((errorRollback) => {\n                // No way to recover, so terminate session and mark as failed.\n                this.logger.error(errorRollback.message);\n                this.logger.error(\"Failed to rollback offer on re-INVITE request\");\n                const outgoingResponse = request.reject({ statusCode: 488 }); // Not Acceptable Here\n                // A BYE should only be sent if session is not already terminated.\n                // For example, a BYE may be sent/received while re-INVITE is outstanding.\n                // Note that the ACK was already sent by the transaction, so just need to send BYE.\n                if (this.state !== SessionState.Terminated) {\n                    if (!this.dialog) {\n                        throw new Error(\"Dialog undefined.\");\n                    }\n                    const extraHeadersBye = [];\n                    extraHeadersBye.push(\"Reason: \" + this.getReasonHeaderValue(500, \"Internal Server Error\"));\n                    this.dialog.bye(undefined, { extraHeaders: extraHeadersBye });\n                    this.stateTransition(SessionState.Terminated);\n                }\n                if (this.delegate && this.delegate.onInvite) {\n                    this.delegate.onInvite(request.message, outgoingResponse.message, 488);\n                }\n            });\n        });\n    }\n    /**\n     * Handle in dialog MESSAGE request.\n     * @internal\n     */\n    onMessageRequest(request) {\n        this.logger.log(\"Session.onMessageRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`MESSAGE received while in state ${this.state}, dropping request`);\n            return;\n        }\n        if (this.delegate && this.delegate.onMessage) {\n            const message = new Message(request);\n            this.delegate.onMessage(message);\n        }\n        else {\n            request.accept();\n        }\n    }\n    /**\n     * Handle in dialog NOTIFY request.\n     * @internal\n     */\n    onNotifyRequest(request) {\n        this.logger.log(\"Session.onNotifyRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`NOTIFY received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // If this a NOTIFY associated with the progress of a REFER,\n        // look to delegate handling to the associated callback.\n        if (this.onNotify) {\n            const notification = new Notification(request);\n            this.onNotify(notification);\n            return;\n        }\n        // Otherwise accept the NOTIFY.\n        if (this.delegate && this.delegate.onNotify) {\n            const notification = new Notification(request);\n            this.delegate.onNotify(notification);\n        }\n        else {\n            request.accept();\n        }\n    }\n    /**\n     * Handle in dialog PRACK request.\n     * @internal\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onPrackRequest(request) {\n        this.logger.log(\"Session.onPrackRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`PRACK received while in state ${this.state}, dropping request`);\n            return;\n        }\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * Handle in dialog REFER request.\n     * @internal\n     */\n    onReferRequest(request) {\n        this.logger.log(\"Session.onReferRequest\");\n        if (this.state !== SessionState.Established) {\n            this.logger.error(`REFER received while in state ${this.state}, dropping request`);\n            return;\n        }\n        // REFER is a SIP request and is constructed as defined in [1].  A REFER\n        // request MUST contain exactly one Refer-To header field value.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.1\n        if (!request.message.hasHeader(\"refer-to\")) {\n            this.logger.warn(\"Invalid REFER packet. A refer-to header is required. Rejecting.\");\n            request.reject();\n            return;\n        }\n        const referral = new Referral(request, this);\n        if (this.delegate && this.delegate.onRefer) {\n            this.delegate.onRefer(referral);\n        }\n        else {\n            this.logger.log(\"No delegate available to handle REFER, automatically accepting and following.\");\n            referral\n                .accept()\n                .then(() => referral.makeInviter(this._referralInviterOptions).invite())\n                .catch((error) => {\n                // FIXME: logging and eating error...\n                this.logger.error(error.message);\n            });\n        }\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request.\n     * If a remote offer was provided in the request, set the remote\n     * description and get a local answer. If a remote offer was not\n     * provided, generates a local offer.\n     * @internal\n     */\n    generateResponseOfferAnswer(request, options) {\n        if (this.dialog) {\n            return this.generateResponseOfferAnswerInDialog(options);\n        }\n        const body = getBody(request.message);\n        if (!body || body.contentDisposition !== \"session\") {\n            return this.getOffer(options);\n        }\n        else {\n            return this.setOfferAndGetAnswer(body, options);\n        }\n    }\n    /**\n     * Generate an offer or answer for a response to an INVITE request\n     * when a dialog (early or otherwise) has already been established.\n     * This method may NOT be called if a dialog has yet to be established.\n     * @internal\n     */\n    generateResponseOfferAnswerInDialog(options) {\n        if (!this.dialog) {\n            throw new Error(\"Dialog undefined.\");\n        }\n        switch (this.dialog.signalingState) {\n            case SignalingState.Initial:\n                return this.getOffer(options);\n            case SignalingState.HaveLocalOffer:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                return Promise.resolve(undefined);\n            case SignalingState.HaveRemoteOffer:\n                if (!this.dialog.offer) {\n                    throw new Error(`Session offer undefined in signaling state ${this.dialog.signalingState}.`);\n                }\n                return this.setOfferAndGetAnswer(this.dialog.offer, options);\n            case SignalingState.Stable:\n                // o  Once the UAS has sent or received an answer to the initial\n                // offer, it MUST NOT generate subsequent offers in any responses\n                // to the initial INVITE.  This means that a UAS based on this\n                // specification alone can never generate subsequent offers until\n                // completion of the initial transaction.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                if (this.state !== SessionState.Established) {\n                    return Promise.resolve(undefined);\n                }\n                // In dialog INVITE without offer, get an offer for the response.\n                return this.getOffer(options);\n            case SignalingState.Closed:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n            default:\n                throw new Error(`Invalid signaling state ${this.dialog.signalingState}.`);\n        }\n    }\n    /**\n     * Get local offer.\n     * @internal\n     */\n    getOffer(options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh\n                .getDescription(sdhOptions, sdhModifiers)\n                .then((bodyAndContentType) => fromBodyLegacy(bodyAndContentType))\n                .catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.getOffer: SDH getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.getOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.getOffer: SDH getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Rollback local/remote offer.\n     * @internal\n     */\n    rollbackOffer() {\n        const sdh = this.setupSessionDescriptionHandler();\n        if (sdh.rollbackDescription === undefined) {\n            return Promise.resolve();\n        }\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            return sdh.rollbackDescription().catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.rollbackOffer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.rollbackOffer: SDH rollbackDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote answer.\n     * @internal\n     */\n    setAnswer(answer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(answer.contentType)) {\n                return Promise.reject(new ContentTypeUnsupportedError());\n            }\n        }\n        catch (error) {\n            this.logger.error(\"Session.setAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh.setDescription(answer.content, sdhOptions, sdhModifiers).catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setAnswer: SDH setDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setAnswer: SDH setDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * Set remote offer and get local answer.\n     * @internal\n     */\n    setOfferAndGetAnswer(offer, options) {\n        const sdh = this.setupSessionDescriptionHandler();\n        const sdhOptions = options.sessionDescriptionHandlerOptions;\n        const sdhModifiers = options.sessionDescriptionHandlerModifiers;\n        // This is intentionally written very defensively. Don't trust SDH to behave.\n        try {\n            if (!sdh.hasDescription(offer.contentType)) {\n                return Promise.reject(new ContentTypeUnsupportedError());\n            }\n        }\n        catch (error) {\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH hasDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n        try {\n            return sdh\n                .setDescription(offer.content, sdhOptions, sdhModifiers)\n                .then(() => sdh.getDescription(sdhOptions, sdhModifiers))\n                .then((bodyAndContentType) => fromBodyLegacy(bodyAndContentType))\n                .catch((error) => {\n                // don't trust SDH to reject with Error\n                this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription rejected...\");\n                const e = error instanceof Error ? error : new Error(\"Session.setOfferAndGetAnswer unknown error.\");\n                this.logger.error(e.message);\n                throw e;\n            });\n        }\n        catch (error) {\n            // don't trust SDH to throw an Error\n            this.logger.error(\"Session.setOfferAndGetAnswer: SDH setDescription or getDescription threw...\");\n            const e = error instanceof Error ? error : new Error(error);\n            this.logger.error(e.message);\n            return Promise.reject(e);\n        }\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */\n    setSessionDescriptionHandler(sdh) {\n        if (this._sessionDescriptionHandler) {\n            throw new Error(\"Session description handler defined.\");\n        }\n        this._sessionDescriptionHandler = sdh;\n    }\n    /**\n     * SDH for confirmed dialog.\n     * @internal\n     */\n    setupSessionDescriptionHandler() {\n        var _a;\n        if (this._sessionDescriptionHandler) {\n            return this._sessionDescriptionHandler;\n        }\n        this._sessionDescriptionHandler = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions);\n        if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) {\n            this.delegate.onSessionDescriptionHandler(this._sessionDescriptionHandler, false);\n        }\n        return this._sessionDescriptionHandler;\n    }\n    /**\n     * Transition session state.\n     * @internal\n     */\n    stateTransition(newState) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch (this._state) {\n            case SessionState.Initial:\n                if (newState !== SessionState.Establishing &&\n                    newState !== SessionState.Established &&\n                    newState !== SessionState.Terminating &&\n                    newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Establishing:\n                if (newState !== SessionState.Established &&\n                    newState !== SessionState.Terminating &&\n                    newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Established:\n                if (newState !== SessionState.Terminating && newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Terminating:\n                if (newState !== SessionState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case SessionState.Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Session ${this.id} transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === SessionState.Terminated) {\n            this.dispose();\n        }\n    }\n    copyRequestOptions(requestOptions = {}) {\n        const extraHeaders = requestOptions.extraHeaders ? requestOptions.extraHeaders.slice() : undefined;\n        const body = requestOptions.body\n            ? {\n                contentDisposition: requestOptions.body.contentDisposition || \"render\",\n                contentType: requestOptions.body.contentType || \"text/plain\",\n                content: requestOptions.body.content || \"\"\n            }\n            : undefined;\n        return {\n            extraHeaders,\n            body\n        };\n    }\n    getReasonHeaderValue(code, reason) {\n        const cause = code;\n        let text = getReasonPhrase(code);\n        if (!text && reason) {\n            text = reason;\n        }\n        return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n    }\n    referExtraHeaders(referTo) {\n        const extraHeaders = [];\n        extraHeaders.push(\"Referred-By: <\" + this.userAgent.configuration.uri + \">\");\n        extraHeaders.push(\"Contact: \" + this._contact);\n        extraHeaders.push(\"Allow: \" + [\"ACK\", \"CANCEL\", \"INVITE\", \"MESSAGE\", \"BYE\", \"OPTIONS\", \"INFO\", \"NOTIFY\", \"REFER\"].toString());\n        extraHeaders.push(\"Refer-To: \" + referTo);\n        return extraHeaders;\n    }\n    referToString(target) {\n        let referTo;\n        if (target instanceof URI) {\n            // REFER without Replaces (Blind Transfer)\n            referTo = target.toString();\n        }\n        else {\n            // REFER with Replaces (Attended Transfer)\n            if (!target.dialog) {\n                throw new Error(\"Dialog undefined.\");\n            }\n            const displayName = target.remoteIdentity.friendlyName;\n            const remoteTarget = target.dialog.remoteTarget.toString();\n            const callId = target.dialog.callId;\n            const remoteTag = target.dialog.remoteTag;\n            const localTag = target.dialog.localTag;\n            const replaces = encodeURIComponent(`${callId};to-tag=${remoteTag};from-tag=${localTag}`);\n            referTo = `\"${displayName}\" <${remoteTarget}?Replaces=${replaces}>`;\n        }\n        return referTo;\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\n/**\n * FIXME: TODO: Should be configurable/variable.\n */\nexport const AllowedMethods = [\n    C.ACK,\n    C.BYE,\n    C.CANCEL,\n    C.INFO,\n    C.INVITE,\n    C.MESSAGE,\n    C.NOTIFY,\n    C.OPTIONS,\n    C.PRACK,\n    C.REFER,\n    C.REGISTER,\n    C.SUBSCRIBE\n];\n","/* eslint-disable @typescript-eslint/no-namespace */\n/**\n * SIP Methods\n * @internal\n */\nexport var C;\n(function (C) {\n    C.ACK = \"ACK\";\n    C.BYE = \"BYE\";\n    C.CANCEL = \"CANCEL\";\n    C.INFO = \"INFO\";\n    C.INVITE = \"INVITE\";\n    C.MESSAGE = \"MESSAGE\";\n    C.NOTIFY = \"NOTIFY\";\n    C.OPTIONS = \"OPTIONS\";\n    C.REGISTER = \"REGISTER\";\n    C.UPDATE = \"UPDATE\";\n    C.SUBSCRIBE = \"SUBSCRIBE\";\n    C.PUBLISH = \"PUBLISH\";\n    C.REFER = \"REFER\";\n    C.PRACK = \"PRACK\";\n})(C = C || (C = {}));\n","/**\n * A request to confirm a {@link Session} (incoming ACK).\n * @public\n */\nexport class Ack {\n    /** @internal */\n    constructor(incomingAckRequest) {\n        this.incomingAckRequest = incomingAckRequest;\n    }\n    /** Incoming ACK request message. */\n    get request() {\n        return this.incomingAckRequest.message;\n    }\n}\n","/**\n * A request to end a {@link Session} (incoming BYE).\n * @public\n */\nexport class Bye {\n    /** @internal */\n    constructor(incomingByeRequest) {\n        this.incomingByeRequest = incomingByeRequest;\n    }\n    /** Incoming BYE request message. */\n    get request() {\n        return this.incomingByeRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingByeRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingByeRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","/**\n * An {@link Emitter} implementation.\n * @internal\n */\nexport class EmitterImpl {\n    constructor() {\n        this.listeners = new Array();\n    }\n    /**\n     * Sets up a function that will be called whenever the target changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */\n    addListener(listener, options) {\n        const onceWrapper = (data) => {\n            this.removeListener(onceWrapper);\n            listener(data);\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * Emit change.\n     * @param data - Data to emit.\n     */\n    emit(data) {\n        this.listeners.slice().forEach((listener) => listener(data));\n    }\n    /**\n     * Removes all listeners previously registered with addListener.\n     */\n    removeAllListeners() {\n        this.listeners = [];\n    }\n    /**\n     * Removes a listener previously registered with addListener.\n     * @param listener - Callback function.\n     */\n    removeListener(listener) {\n        this.listeners = this.listeners.filter((l) => l !== listener);\n    }\n    /**\n     * Registers a listener.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */\n    on(listener) {\n        return this.addListener(listener);\n    }\n    /**\n     * Unregisters a listener.\n     * @param listener - Callback function.\n     * @deprecated Use removeListener.\n     */\n    off(listener) {\n        return this.removeListener(listener);\n    }\n    /**\n     * Registers a listener then unregisters the listener after one event emission.\n     * @param listener - Callback function.\n     * @deprecated Use addListener.\n     */\n    once(listener) {\n        return this.addListener(listener, { once: true });\n    }\n}\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating an outstanding prior request prevented execution.\n * @public\n */\nexport class RequestPendingError extends Exception {\n    /** @internal */\n    constructor(message) {\n        super(message ? message : \"Request pending.\");\n    }\n}\n","/**\n * An exchange of information (incoming INFO).\n * @public\n */\nexport class Info {\n    /** @internal */\n    constructor(incomingInfoRequest) {\n        this.incomingInfoRequest = incomingInfoRequest;\n    }\n    /** Incoming MESSAGE request message. */\n    get request() {\n        return this.incomingInfoRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingInfoRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingInfoRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","/**\n * A received message (incoming MESSAGE).\n * @public\n */\nexport class Message {\n    /** @internal */\n    constructor(incomingMessageRequest) {\n        this.incomingMessageRequest = incomingMessageRequest;\n    }\n    /** Incoming MESSAGE request message. */\n    get request() {\n        return this.incomingMessageRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingMessageRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingMessageRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","/**\n * A notification of an event (incoming NOTIFY).\n * @public\n */\nexport class Notification {\n    /** @internal */\n    constructor(incomingNotifyRequest) {\n        this.incomingNotifyRequest = incomingNotifyRequest;\n    }\n    /** Incoming NOTIFY request message. */\n    get request() {\n        return this.incomingNotifyRequest.message;\n    }\n    /** Accept the request. */\n    accept(options) {\n        this.incomingNotifyRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingNotifyRequest.reject(options);\n        return Promise.resolve();\n    }\n}\n","import { NameAddrHeader } from \"../grammar/name-addr-header.js\";\n/**\n * A request to establish a {@link Session} elsewhere (incoming REFER).\n * @public\n */\nexport class Referral {\n    /** @internal */\n    constructor(incomingReferRequest, session) {\n        this.incomingReferRequest = incomingReferRequest;\n        this.session = session;\n    }\n    get referTo() {\n        const referTo = this.incomingReferRequest.message.parseHeader(\"refer-to\");\n        if (!(referTo instanceof NameAddrHeader)) {\n            throw new Error(\"Failed to parse Refer-To header.\");\n        }\n        return referTo;\n    }\n    get referredBy() {\n        return this.incomingReferRequest.message.getHeader(\"referred-by\");\n    }\n    get replaces() {\n        const value = this.referTo.uri.getHeader(\"replaces\");\n        if (value instanceof Array) {\n            return value[0];\n        }\n        return value;\n    }\n    /** Incoming REFER request message. */\n    get request() {\n        return this.incomingReferRequest.message;\n    }\n    /** Accept the request. */\n    accept(options = { statusCode: 202 }) {\n        this.incomingReferRequest.accept(options);\n        return Promise.resolve();\n    }\n    /** Reject the request. */\n    reject(options) {\n        this.incomingReferRequest.reject(options);\n        return Promise.resolve();\n    }\n    /**\n     * Creates an inviter which may be used to send an out of dialog INVITE request.\n     *\n     * @remarks\n     * This a helper method to create an Inviter which will execute the referral\n     * of the `Session` which was referred. The appropriate headers are set and\n     * the referred `Session` is linked to the new `Session`. Note that only a\n     * single instance of the `Inviter` will be created and returned (if called\n     * more than once a reference to the same `Inviter` will be returned every time).\n     *\n     * @param options - Options bucket.\n     * @param modifiers - Session description handler modifiers.\n     */\n    makeInviter(options) {\n        if (this.inviter) {\n            return this.inviter;\n        }\n        const targetURI = this.referTo.uri.clone();\n        targetURI.clearHeaders();\n        options = options || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        const replaces = this.replaces;\n        if (replaces) {\n            // decodeURIComponent is a holdover from 2c086eb4. Not sure that it is actually necessary\n            extraHeaders.push(\"Replaces: \" + decodeURIComponent(replaces));\n        }\n        const referredBy = this.referredBy;\n        if (referredBy) {\n            extraHeaders.push(\"Referred-By: \" + referredBy);\n        }\n        options.extraHeaders = extraHeaders;\n        this.inviter = this.session.userAgent._makeInviter(targetURI, options);\n        this.inviter._referred = this.session;\n        this.session._referral = this.inviter;\n        return this.inviter;\n    }\n}\n","/**\n * SIP extension support level.\n * @public\n */\nexport var SIPExtension;\n(function (SIPExtension) {\n    SIPExtension[\"Required\"] = \"Required\";\n    SIPExtension[\"Supported\"] = \"Supported\";\n    SIPExtension[\"Unsupported\"] = \"Unsupported\";\n})(SIPExtension = SIPExtension || (SIPExtension = {}));\n/**\n * SIP Option Tags\n * @remarks\n * http://www.iana.org/assignments/sip-parameters/sip-parameters.xhtml#sip-parameters-4\n * @public\n */\nexport const UserAgentRegisteredOptionTags = {\n    \"100rel\": true,\n    \"199\": true,\n    answermode: true,\n    \"early-session\": true,\n    eventlist: true,\n    explicitsub: true,\n    \"from-change\": true,\n    \"geolocation-http\": true,\n    \"geolocation-sip\": true,\n    gin: true,\n    gruu: true,\n    histinfo: true,\n    ice: true,\n    join: true,\n    \"multiple-refer\": true,\n    norefersub: true,\n    nosub: true,\n    outbound: true,\n    path: true,\n    policy: true,\n    precondition: true,\n    pref: true,\n    privacy: true,\n    \"recipient-list-invite\": true,\n    \"recipient-list-message\": true,\n    \"recipient-list-subscribe\": true,\n    replaces: true,\n    \"resource-priority\": true,\n    \"sdp-anat\": true,\n    \"sec-agree\": true,\n    tdialog: true,\n    timer: true,\n    uui: true // RFC 7433\n};\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\nimport { SignalingState } from \"../core/session/session.js\";\nimport { getReasonPhrase, newTag } from \"../core/messages/utils.js\";\nimport { Session } from \"./session.js\";\nimport { SessionState } from \"./session-state.js\";\nimport { SIPExtension } from \"./user-agent-options.js\";\n/**\n * An inviter offers to establish a {@link Session} (outgoing INVITE).\n * @public\n */\nexport class Inviter extends Session {\n    /**\n     * Constructs a new instance of the `Inviter` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param options - Options bucket. See {@link InviterOptions} for details.\n     */\n    constructor(userAgent, targetURI, options = {}) {\n        super(userAgent, options);\n        /** True if dispose() has been called. */\n        this.disposed = false;\n        /** True if early media use is enabled. */\n        this.earlyMedia = false;\n        /** The early media session description handlers. */\n        this.earlyMediaSessionDescriptionHandlers = new Map();\n        /** True if cancel() was called. */\n        this.isCanceled = false;\n        /** True if initial INVITE without SDP. */\n        this.inviteWithoutSdp = false;\n        this.logger = userAgent.getLogger(\"sip.Inviter\");\n        // Early media\n        this.earlyMedia = options.earlyMedia !== undefined ? options.earlyMedia : this.earlyMedia;\n        // From tag\n        this.fromTag = newTag();\n        // Invite without SDP\n        this.inviteWithoutSdp = options.inviteWithoutSdp !== undefined ? options.inviteWithoutSdp : this.inviteWithoutSdp;\n        // Inviter options (could do better copying these options)\n        const inviterOptions = Object.assign({}, options);\n        inviterOptions.params = Object.assign({}, options.params);\n        // Anonymous call\n        const anonymous = options.anonymous || false;\n        // Contact\n        const contact = userAgent.contact.toString({\n            anonymous,\n            // Do not add ;ob in initial forming dialog requests if the\n            // registration over the current connection got a GRUU URI.\n            outbound: anonymous ? !userAgent.contact.tempGruu : !userAgent.contact.pubGruu\n        });\n        // FIXME: TODO: We should not be parsing URIs here as if it fails we have to throw an exception\n        // which is not something we want our constructor to do. URIs should be passed in as params.\n        // URIs\n        if (anonymous && userAgent.configuration.uri) {\n            inviterOptions.params.fromDisplayName = \"Anonymous\";\n            inviterOptions.params.fromUri = \"sip:anonymous@anonymous.invalid\";\n        }\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (inviterOptions.params.fromUri) {\n            fromURI =\n                typeof inviterOptions.params.fromUri === \"string\"\n                    ? Grammar.URIParse(inviterOptions.params.fromUri)\n                    : inviterOptions.params.fromUri;\n        }\n        if (!fromURI) {\n            throw new TypeError(\"Invalid from URI: \" + inviterOptions.params.fromUri);\n        }\n        let toURI = targetURI;\n        if (inviterOptions.params.toUri) {\n            toURI =\n                typeof inviterOptions.params.toUri === \"string\"\n                    ? Grammar.URIParse(inviterOptions.params.toUri)\n                    : inviterOptions.params.toUri;\n        }\n        if (!toURI) {\n            throw new TypeError(\"Invalid to URI: \" + inviterOptions.params.toUri);\n        }\n        // Params\n        const messageOptions = Object.assign({}, inviterOptions.params);\n        messageOptions.fromTag = this.fromTag;\n        // Extra headers\n        const extraHeaders = (inviterOptions.extraHeaders || []).slice();\n        if (anonymous && userAgent.configuration.uri) {\n            extraHeaders.push(\"P-Preferred-Identity: \" + userAgent.configuration.uri.toString());\n            extraHeaders.push(\"Privacy: id\");\n        }\n        extraHeaders.push(\"Contact: \" + contact);\n        extraHeaders.push(\"Allow: \" + [\"ACK\", \"CANCEL\", \"INVITE\", \"MESSAGE\", \"BYE\", \"OPTIONS\", \"INFO\", \"NOTIFY\", \"REFER\"].toString());\n        if (userAgent.configuration.sipExtension100rel === SIPExtension.Required) {\n            extraHeaders.push(\"Require: 100rel\");\n        }\n        if (userAgent.configuration.sipExtensionReplaces === SIPExtension.Required) {\n            extraHeaders.push(\"Require: replaces\");\n        }\n        inviterOptions.extraHeaders = extraHeaders;\n        // Body\n        const body = undefined;\n        // Make initial outgoing request message\n        this.outgoingRequestMessage = userAgent.userAgentCore.makeOutgoingRequestMessage(C.INVITE, targetURI, fromURI, toURI, messageOptions, extraHeaders, body);\n        // Session parent properties\n        this._contact = contact;\n        this._referralInviterOptions = inviterOptions;\n        this._renderbody = options.renderbody;\n        this._rendertype = options.rendertype;\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // Modifiers and options for re-INVITE transactions\n        if (options.sessionDescriptionHandlerModifiersReInvite) {\n            this.sessionDescriptionHandlerModifiersReInvite = options.sessionDescriptionHandlerModifiersReInvite;\n        }\n        if (options.sessionDescriptionHandlerOptionsReInvite) {\n            this.sessionDescriptionHandlerOptionsReInvite = options.sessionDescriptionHandlerOptionsReInvite;\n        }\n        // Identifier\n        this._id = this.outgoingRequestMessage.callId + this.fromTag;\n        // Add to the user agent's session collection.\n        this.userAgent._sessions[this._id] = this;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        // Only run through this once. It can and does get called multiple times\n        // depending on the what the sessions state is when first called.\n        // For example, if called when \"establishing\" it will be called again\n        // at least once when the session transitions to \"terminated\".\n        // Regardless, running through this more than once is pointless.\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        // Dispose of early dialog media\n        this.disposeEarlyMedia();\n        // If the final response for the initial INVITE not yet been received, cancel it\n        switch (this.state) {\n            case SessionState.Initial:\n                return this.cancel().then(() => super.dispose());\n            case SessionState.Establishing:\n                return this.cancel().then(() => super.dispose());\n            case SessionState.Established:\n                return super.dispose();\n            case SessionState.Terminating:\n                return super.dispose();\n            case SessionState.Terminated:\n                return super.dispose();\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n    }\n    /**\n     * Initial outgoing INVITE request message body.\n     */\n    get body() {\n        return this.outgoingRequestMessage.body;\n    }\n    /**\n     * The identity of the local user.\n     */\n    get localIdentity() {\n        return this.outgoingRequestMessage.from;\n    }\n    /**\n     * The identity of the remote user.\n     */\n    get remoteIdentity() {\n        return this.outgoingRequestMessage.to;\n    }\n    /**\n     * Initial outgoing INVITE request message.\n     */\n    get request() {\n        return this.outgoingRequestMessage;\n    }\n    /**\n     * Cancels the INVITE request.\n     *\n     * @remarks\n     * Sends a CANCEL request.\n     * Resolves once the response sent, otherwise rejects.\n     *\n     * After sending a CANCEL request the expectation is that a 487 final response\n     * will be received for the INVITE. However a 200 final response to the INVITE\n     * may nonetheless arrive (it's a race between the CANCEL reaching the UAS before\n     * the UAS sends a 200) in which case an ACK & BYE will be sent. The net effect\n     * is that this method will terminate the session regardless of the race.\n     * @param options - Options bucket.\n     */\n    cancel(options = {}) {\n        this.logger.log(\"Inviter.cancel\");\n        // validate state\n        if (this.state !== SessionState.Initial && this.state !== SessionState.Establishing) {\n            const error = new Error(`Invalid session state ${this.state}`);\n            this.logger.error(error.message);\n            return Promise.reject(error);\n        }\n        // flag canceled\n        this.isCanceled = true;\n        // transition state\n        this.stateTransition(SessionState.Terminating);\n        // helper function\n        function getCancelReason(code, reason) {\n            if ((code && code < 200) || code > 699) {\n                throw new TypeError(\"Invalid statusCode: \" + code);\n            }\n            else if (code) {\n                const cause = code;\n                const text = getReasonPhrase(code) || reason;\n                return \"SIP;cause=\" + cause + ';text=\"' + text + '\"';\n            }\n        }\n        if (this.outgoingInviteRequest) {\n            // the CANCEL may not be respected by peer(s), so don't transition to terminated\n            let cancelReason;\n            if (options.statusCode && options.reasonPhrase) {\n                cancelReason = getCancelReason(options.statusCode, options.reasonPhrase);\n            }\n            this.outgoingInviteRequest.cancel(cancelReason, options);\n        }\n        else {\n            this.logger.warn(\"Canceled session before INVITE was sent\");\n            this.stateTransition(SessionState.Terminated);\n        }\n        return Promise.resolve();\n    }\n    /**\n     * Sends the INVITE request.\n     *\n     * @remarks\n     * TLDR...\n     *  1) Only one offer/answer exchange permitted during initial INVITE.\n     *  2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *  3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * 1) Only one offer/answer exchange permitted during initial INVITE.\n     *\n     * Our implementation replaces the following bullet point...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MAY generate subsequent offers in requests based on rules\n     *    specified for that method, but only if it has received answers\n     *    to any previous offers, and has not sent any offers to which it\n     *    hasn't gotten an answer.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...with...\n     *\n     * o  After having sent or received an answer to the first offer, the\n     *    UAC MUST NOT generate subsequent offers in requests based on rules\n     *    specified for that method.\n     *\n     * ...which in combination with this bullet point...\n     *\n     * o  Once the UAS has sent or received an answer to the initial\n     *    offer, it MUST NOT generate subsequent offers in any responses\n     *    to the initial INVITE.  This means that a UAS based on this\n     *    specification alone can never generate subsequent offers until\n     *    completion of the initial transaction.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * ...ensures that EXACTLY ONE offer/answer exchange will occur\n     * during an initial out of dialog INVITE request made by our UAC.\n     *\n     *\n     * 2) No \"early media\" if the initial offer is in an INVITE (default behavior).\n     *\n     * While our implementation adheres to the following bullet point...\n     *\n     * o  If the initial offer is in an INVITE, the answer MUST be in a\n     *    reliable non-failure message from UAS back to UAC which is\n     *    correlated to that INVITE.  For this specification, that is\n     *    only the final 2xx response to that INVITE.  That same exact\n     *    answer MAY also be placed in any provisional responses sent\n     *    prior to the answer.  The UAC MUST treat the first session\n     *    description it receives as the answer, and MUST ignore any\n     *    session descriptions in subsequent responses to the initial\n     *    INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     *\n     * We have made the following implementation decision with regard to early media...\n     *\n     * o  If the initial offer is in the INVITE, the answer from the\n     *    UAS back to the UAC will establish a media session only\n     *    only after the final 2xx response to that INVITE is received.\n     *\n     * The reason for this decision is rooted in a restriction currently\n     * inherent in WebRTC. Specifically, while a SIP INVITE request with an\n     * initial offer may fork resulting in more than one provisional answer,\n     * there is currently no easy/good way to to \"fork\" an offer generated\n     * by a peer connection. In particular, a WebRTC offer currently may only\n     * be matched with one answer and we have no good way to know which\n     * \"provisional answer\" is going to be the \"final answer\". So we have\n     * decided to punt and not create any \"early media\" sessions in this case.\n     *\n     * The upshot is that if you want \"early media\", you must not put the\n     * initial offer in the INVITE. Instead, force the UAS to provide the\n     * initial offer by sending an INVITE without an offer. In the WebRTC\n     * case this allows us to create a unique peer connection with a unique\n     * answer for every provisional offer with \"early media\" on all of them.\n     *\n     *\n     * 3) If \"early media\" and the initial offer is in an INVITE, no INVITE forking.\n     *\n     * The default behavior may be altered and \"early media\" utilized if the\n     * initial offer is in the an INVITE by setting the `earlyMedia` options.\n     * However in that case the INVITE request MUST NOT fork. This allows for\n     * \"early media\" in environments where the forking behavior of the SIP\n     * servers being utilized is configured to disallow forking.\n     */\n    invite(options = {}) {\n        this.logger.log(\"Inviter.invite\");\n        // validate state\n        if (this.state !== SessionState.Initial) {\n            // re-invite\n            return super.invite(options);\n        }\n        // Modifiers and options for initial INVITE transaction\n        if (options.sessionDescriptionHandlerModifiers) {\n            this.sessionDescriptionHandlerModifiers = options.sessionDescriptionHandlerModifiers;\n        }\n        if (options.sessionDescriptionHandlerOptions) {\n            this.sessionDescriptionHandlerOptions = options.sessionDescriptionHandlerOptions;\n        }\n        // just send an INVITE with no sdp...\n        if (options.withoutSdp || this.inviteWithoutSdp) {\n            if (this._renderbody && this._rendertype) {\n                this.outgoingRequestMessage.body = { contentType: this._rendertype, body: this._renderbody };\n            }\n            // transition state\n            this.stateTransition(SessionState.Establishing);\n            return Promise.resolve(this.sendInvite(options));\n        }\n        // get an offer and send it in an INVITE\n        const offerOptions = {\n            sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n            sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n        };\n        return this.getOffer(offerOptions)\n            .then((body) => {\n            this.outgoingRequestMessage.body = { body: body.content, contentType: body.contentType };\n            // transition state\n            this.stateTransition(SessionState.Establishing);\n            return this.sendInvite(options);\n        })\n            .catch((error) => {\n            this.logger.log(error.message);\n            // It's possible we are already terminated,\n            // so don't throw trying to transition again.\n            if (this.state !== SessionState.Terminated) {\n                this.stateTransition(SessionState.Terminated);\n            }\n            throw error;\n        });\n    }\n    /**\n     * 13.2.1 Creating the Initial INVITE\n     *\n     * Since the initial INVITE represents a request outside of a dialog,\n     * its construction follows the procedures of Section 8.1.1.  Additional\n     * processing is required for the specific case of INVITE.\n     *\n     * An Allow header field (Section 20.5) SHOULD be present in the INVITE.\n     * It indicates what methods can be invoked within a dialog, on the UA\n     * sending the INVITE, for the duration of the dialog.  For example, a\n     * UA capable of receiving INFO requests within a dialog [34] SHOULD\n     * include an Allow header field listing the INFO method.\n     *\n     * A Supported header field (Section 20.37) SHOULD be present in the\n     * INVITE.  It enumerates all the extensions understood by the UAC.\n     *\n     * An Accept (Section 20.1) header field MAY be present in the INVITE.\n     * It indicates which Content-Types are acceptable to the UA, in both\n     * the response received by it, and in any subsequent requests sent to\n     * it within dialogs established by the INVITE.  The Accept header field\n     * is especially useful for indicating support of various session\n     * description formats.\n     *\n     * The UAC MAY add an Expires header field (Section 20.19) to limit the\n     * validity of the invitation.  If the time indicated in the Expires\n     * header field is reached and no final answer for the INVITE has been\n     * received, the UAC core SHOULD generate a CANCEL request for the\n     * INVITE, as per Section 9.\n     *\n     * A UAC MAY also find it useful to add, among others, Subject (Section\n     * 20.36), Organization (Section 20.25) and User-Agent (Section 20.41)\n     * header fields.  They all contain information related to the INVITE.\n     *\n     * The UAC MAY choose to add a message body to the INVITE.  Section\n     * 8.1.1.10 deals with how to construct the header fields -- Content-\n     * Type among others -- needed to describe the message body.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-13.2.1\n     */\n    sendInvite(options = {}) {\n        //    There are special rules for message bodies that contain a session\n        //    description - their corresponding Content-Disposition is \"session\".\n        //    SIP uses an offer/answer model where one UA sends a session\n        //    description, called the offer, which contains a proposed description\n        //    of the session.  The offer indicates the desired communications means\n        //    (audio, video, games), parameters of those means (such as codec\n        //    types) and addresses for receiving media from the answerer.  The\n        //    other UA responds with another session description, called the\n        //    answer, which indicates which communications means are accepted, the\n        //    parameters that apply to those means, and addresses for receiving\n        //    media from the offerer. An offer/answer exchange is within the\n        //    context of a dialog, so that if a SIP INVITE results in multiple\n        //    dialogs, each is a separate offer/answer exchange.  The offer/answer\n        //    model defines restrictions on when offers and answers can be made\n        //    (for example, you cannot make a new offer while one is in progress).\n        //    This results in restrictions on where the offers and answers can\n        //    appear in SIP messages.  In this specification, offers and answers\n        //    can only appear in INVITE requests and responses, and ACK.  The usage\n        //    of offers and answers is further restricted.  For the initial INVITE\n        //    transaction, the rules are:\n        //\n        //       o  The initial offer MUST be in either an INVITE or, if not there,\n        //          in the first reliable non-failure message from the UAS back to\n        //          the UAC.  In this specification, that is the final 2xx\n        //          response.\n        //\n        //       o  If the initial offer is in an INVITE, the answer MUST be in a\n        //          reliable non-failure message from UAS back to UAC which is\n        //          correlated to that INVITE.  For this specification, that is\n        //          only the final 2xx response to that INVITE.  That same exact\n        //          answer MAY also be placed in any provisional responses sent\n        //          prior to the answer.  The UAC MUST treat the first session\n        //          description it receives as the answer, and MUST ignore any\n        //          session descriptions in subsequent responses to the initial\n        //          INVITE.\n        //\n        //       o  If the initial offer is in the first reliable non-failure\n        //          message from the UAS back to UAC, the answer MUST be in the\n        //          acknowledgement for that message (in this specification, ACK\n        //          for a 2xx response).\n        //\n        //       o  After having sent or received an answer to the first offer, the\n        //          UAC MAY generate subsequent offers in requests based on rules\n        //          specified for that method, but only if it has received answers\n        //          to any previous offers, and has not sent any offers to which it\n        //          hasn't gotten an answer.\n        //\n        //       o  Once the UAS has sent or received an answer to the initial\n        //          offer, it MUST NOT generate subsequent offers in any responses\n        //          to the initial INVITE.  This means that a UAS based on this\n        //          specification alone can never generate subsequent offers until\n        //          completion of the initial transaction.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        // 5 The Offer/Answer Model and PRACK\n        //\n        //    RFC 3261 describes guidelines for the sets of messages in which\n        //    offers and answers [3] can appear.  Based on those guidelines, this\n        //    extension provides additional opportunities for offer/answer\n        //    exchanges.\n        //    If the INVITE contained an offer, the UAS MAY generate an answer in a\n        //    reliable provisional response (assuming these are supported by the\n        //    UAC).  That results in the establishment of the session before\n        //    completion of the call.  Similarly, if a reliable provisional\n        //    response is the first reliable message sent back to the UAC, and the\n        //    INVITE did not contain an offer, one MUST appear in that reliable\n        //    provisional response.\n        //    If the UAC receives a reliable provisional response with an offer\n        //    (this would occur if the UAC sent an INVITE without an offer, in\n        //    which case the first reliable provisional response will contain the\n        //    offer), it MUST generate an answer in the PRACK.  If the UAC receives\n        //    a reliable provisional response with an answer, it MAY generate an\n        //    additional offer in the PRACK.  If the UAS receives a PRACK with an\n        //    offer, it MUST place the answer in the 2xx to the PRACK.\n        //    Once an answer has been sent or received, the UA SHOULD establish the\n        //    session based on the parameters of the offer and answer, even if the\n        //    original INVITE itself has not been responded to.\n        //    If the UAS had placed a session description in any reliable\n        //    provisional response that is unacknowledged when the INVITE is\n        //    accepted, the UAS MUST delay sending the 2xx until the provisional\n        //    response is acknowledged.  Otherwise, the reliability of the 1xx\n        //    cannot be guaranteed, and reliability is needed for proper operation\n        //    of the offer/answer exchange.\n        //    All user agents that support this extension MUST support all\n        //    offer/answer exchanges that are possible based on the rules in\n        //    Section 13.2 of RFC 3261, based on the existence of INVITE and PRACK\n        //    as requests, and 2xx and reliable 1xx as non-failure reliable\n        //    responses.\n        //\n        // https://tools.ietf.org/html/rfc3262#section-5\n        ////\n        // The Offer/Answer Model Implementation\n        //\n        // The offer/answer model is straight forward, but one MUST READ the specifications...\n        //\n        // 13.2.1 Creating the Initial INVITE (paragraph 8 in particular)\n        // https://tools.ietf.org/html/rfc3261#section-13.2.1\n        //\n        // 5 The Offer/Answer Model and PRACK\n        // https://tools.ietf.org/html/rfc3262#section-5\n        //\n        // Session Initiation Protocol (SIP) Usage of the Offer/Answer Model\n        // https://tools.ietf.org/html/rfc6337\n        ////\n        ////\n        // TODO: The Offer/Answer Model Implementation\n        //\n        // Currently if `earlyMedia` is enabled and the INVITE request forks,\n        // the session is terminated if the early dialog does not match the\n        // confirmed dialog. This restriction make sense in a WebRTC environment,\n        // but there are other environments where this restriction does not hold.\n        //\n        // So while we currently cannot make the offer in INVITE+forking+webrtc\n        // case work, we propose doing the following...\n        //\n        // OPTION 1\n        // - add a `earlyMediaForking` option and\n        // - require SDH.setDescription() to be callable multiple times.\n        //\n        // OPTION 2\n        // 1) modify SDH Factory to provide an initial offer without giving us the SDH, and then...\n        // 2) stick that offer in the initial INVITE, and when 183 with initial answer is received...\n        // 3) ask SDH Factory if it supports \"earlyRemoteAnswer\"\n        //   a) if true, ask SDH Factory to createSDH(localOffer).then((sdh) => sdh.setDescription(remoteAnswer)\n        //   b) if false, defer getting a SDH until 2xx response is received\n        //\n        // Our supplied WebRTC SDH will default to behavior 3b which works in forking environment (without)\n        // early media if initial offer is in the INVITE). We will, however, provide an \"inviteWillNotFork\"\n        // option which if set to \"true\" will have our supplied WebRTC SDH behave in the 3a manner.\n        // That will result in\n        //  - early media working with initial offer in the INVITE, and...\n        //  - if the INVITE forks, the session terminating with an ERROR that reads like\n        //    \"You set 'inviteWillNotFork' to true but the INVITE forked. You can't eat your cake, and have it too.\"\n        //  - furthermore, we accept that users will report that error to us as \"bug\" regardless\n        //\n        // So, SDH Factory is going to end up with a new interface along the lines of...\n        //\n        // interface SessionDescriptionHandlerFactory {\n        //   makeLocalOffer(): Promise<ContentTypeAndBody>;\n        //   makeSessionDescriptionHandler(\n        //     initialOffer: ContentTypeAndBody, offerType: \"local\" | \"remote\"\n        //   ): Promise<SessionDescriptionHandler>;\n        //   supportsEarlyRemoteAnswer: boolean;\n        //   supportsContentType(contentType: string): boolean;\n        //   getDescription(description: ContentTypeAndBody): Promise<ContentTypeAndBody>\n        //   setDescription(description: ContentTypeAndBody): Promise<void>\n        // }\n        ////\n        // Send the INVITE request.\n        this.outgoingInviteRequest = this.userAgent.userAgentCore.invite(this.outgoingRequestMessage, {\n            onAccept: (inviteResponse) => {\n                // Our transaction layer is \"non-standard\" in that it will only\n                // pass us a 2xx response once per branch, so there is no need to\n                // worry about dealing with 2xx retransmissions. However, we can\n                // and do still get 2xx responses for multiple branches (when an\n                // INVITE is forked) which may create multiple confirmed dialogs.\n                // Herein we are acking and sending a bye to any confirmed dialogs\n                // which arrive beyond the first one. This is the desired behavior\n                // for most applications (but certainly not all).\n                // If we already received a confirmed dialog, ack & bye this additional confirmed session.\n                if (this.dialog) {\n                    this.logger.log(\"Additional confirmed dialog, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    // We do NOT transition state in this case (this is an \"extra\" dialog)\n                    return;\n                }\n                // If the user requested cancellation, ack & bye this session.\n                if (this.isCanceled) {\n                    this.logger.log(\"Canceled session accepted, sending ACK and BYE\");\n                    this.ackAndBye(inviteResponse);\n                    this.stateTransition(SessionState.Terminated);\n                    return;\n                }\n                this.notifyReferer(inviteResponse);\n                this.onAccept(inviteResponse)\n                    .then(() => {\n                    this.disposeEarlyMedia();\n                })\n                    .catch(() => {\n                    this.disposeEarlyMedia();\n                })\n                    .then(() => {\n                    if (options.requestDelegate && options.requestDelegate.onAccept) {\n                        options.requestDelegate.onAccept(inviteResponse);\n                    }\n                });\n            },\n            onProgress: (inviteResponse) => {\n                // If the user requested cancellation, ignore response.\n                if (this.isCanceled) {\n                    return;\n                }\n                this.notifyReferer(inviteResponse);\n                this.onProgress(inviteResponse)\n                    .catch(() => {\n                    this.disposeEarlyMedia();\n                })\n                    .then(() => {\n                    if (options.requestDelegate && options.requestDelegate.onProgress) {\n                        options.requestDelegate.onProgress(inviteResponse);\n                    }\n                });\n            },\n            onRedirect: (inviteResponse) => {\n                this.notifyReferer(inviteResponse);\n                this.onRedirect(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onRedirect) {\n                    options.requestDelegate.onRedirect(inviteResponse);\n                }\n            },\n            onReject: (inviteResponse) => {\n                this.notifyReferer(inviteResponse);\n                this.onReject(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onReject) {\n                    options.requestDelegate.onReject(inviteResponse);\n                }\n            },\n            onTrying: (inviteResponse) => {\n                this.notifyReferer(inviteResponse);\n                this.onTrying(inviteResponse);\n                if (options.requestDelegate && options.requestDelegate.onTrying) {\n                    options.requestDelegate.onTrying(inviteResponse);\n                }\n            }\n        });\n        return this.outgoingInviteRequest;\n    }\n    disposeEarlyMedia() {\n        this.earlyMediaSessionDescriptionHandlers.forEach((sessionDescriptionHandler) => {\n            sessionDescriptionHandler.close();\n        });\n        this.earlyMediaSessionDescriptionHandlers.clear();\n    }\n    notifyReferer(response) {\n        if (!this._referred) {\n            return;\n        }\n        if (!(this._referred instanceof Session)) {\n            throw new Error(\"Referred session not instance of session\");\n        }\n        if (!this._referred.dialog) {\n            return;\n        }\n        if (!response.message.statusCode) {\n            throw new Error(\"Status code undefined.\");\n        }\n        if (!response.message.reasonPhrase) {\n            throw new Error(\"Reason phrase undefined.\");\n        }\n        const statusCode = response.message.statusCode;\n        const reasonPhrase = response.message.reasonPhrase;\n        const body = `SIP/2.0 ${statusCode} ${reasonPhrase}`.trim();\n        const outgoingNotifyRequest = this._referred.dialog.notify(undefined, {\n            extraHeaders: [\"Event: refer\", \"Subscription-State: terminated\"],\n            body: {\n                contentDisposition: \"render\",\n                contentType: \"message/sipfrag\",\n                content: body\n            }\n        });\n        // The implicit subscription created by a REFER is the same as a\n        // subscription created with a SUBSCRIBE request.  The agent issuing the\n        // REFER can terminate this subscription prematurely by unsubscribing\n        // using the mechanisms described in [2].  Terminating a subscription,\n        // either by explicitly unsubscribing or rejecting NOTIFY, is not an\n        // indication that the referenced request should be withdrawn or\n        // abandoned.\n        // https://tools.ietf.org/html/rfc3515#section-2.4.4\n        // FIXME: TODO: This should be done in a subscribe dialog to satisfy the above.\n        // If the notify is rejected, stop sending NOTIFY requests.\n        outgoingNotifyRequest.delegate = {\n            onReject: () => {\n                this._referred = undefined;\n            }\n        };\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 2xx response.\n     */\n    onAccept(inviteResponse) {\n        this.logger.log(\"Inviter.onAccept\");\n        // validate state\n        if (this.state !== SessionState.Establishing) {\n            this.logger.error(`Accept received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported behavior.\n        if (response.hasHeader(\"P-Asserted-Identity\")) {\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        }\n        // We have a confirmed dialog.\n        session.delegate = {\n            onAck: (ackRequest) => this.onAckRequest(ackRequest),\n            onBye: (byeRequest) => this.onByeRequest(byeRequest),\n            onInfo: (infoRequest) => this.onInfoRequest(infoRequest),\n            onInvite: (inviteRequest) => this.onInviteRequest(inviteRequest),\n            onMessage: (messageRequest) => this.onMessageRequest(messageRequest),\n            onNotify: (notifyRequest) => this.onNotifyRequest(notifyRequest),\n            onPrack: (prackRequest) => this.onPrackRequest(prackRequest),\n            onRefer: (referRequest) => this.onReferRequest(referRequest)\n        };\n        this._dialog = session;\n        switch (session.signalingState) {\n            case SignalingState.Initial:\n                // INVITE without offer, so MUST have offer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition(SessionState.Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case SignalingState.HaveLocalOffer:\n                // INVITE with offer, so MUST have answer at this point, so invalid state.\n                this.logger.error(\"Received 2xx response to INVITE without a session description\");\n                this.ackAndBye(inviteResponse, 400, \"Missing session description\");\n                this.stateTransition(SessionState.Terminated);\n                return Promise.reject(new Error(\"Bad Media Description\"));\n            case SignalingState.HaveRemoteOffer: {\n                // INVITE without offer, received offer in 2xx, so MUST send answer in ACK.\n                if (!this._dialog.offer) {\n                    throw new Error(`Session offer undefined in signaling state ${this._dialog.signalingState}.`);\n                }\n                const options = {\n                    sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                    sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                };\n                return this.setOfferAndGetAnswer(this._dialog.offer, options)\n                    .then((body) => {\n                    inviteResponse.ack({ body });\n                    this.stateTransition(SessionState.Established);\n                })\n                    .catch((error) => {\n                    this.ackAndBye(inviteResponse, 488, \"Invalid session description\");\n                    this.stateTransition(SessionState.Terminated);\n                    throw error;\n                });\n            }\n            case SignalingState.Stable: {\n                // If INVITE without offer and we have already completed the initial exchange.\n                if (this.earlyMediaSessionDescriptionHandlers.size > 0) {\n                    const sdh = this.earlyMediaSessionDescriptionHandlers.get(session.id);\n                    if (!sdh) {\n                        throw new Error(\"Session description handler undefined.\");\n                    }\n                    this.setSessionDescriptionHandler(sdh);\n                    this.earlyMediaSessionDescriptionHandlers.delete(session.id);\n                    inviteResponse.ack();\n                    this.stateTransition(SessionState.Established);\n                    return Promise.resolve();\n                }\n                // If INVITE with offer and we used an \"early\" answer in a provisional response for media\n                if (this.earlyMediaDialog) {\n                    // If early media dialog doesn't match confirmed dialog, we must unfortunately fail.\n                    // This limitation stems from how WebRTC currently implements its offer/answer model.\n                    // There are details elsewhere, but in short a WebRTC offer cannot be forked.\n                    if (this.earlyMediaDialog !== session) {\n                        if (this.earlyMedia) {\n                            const message = \"You have set the 'earlyMedia' option to 'true' which requires that your INVITE requests \" +\n                                \"do not fork and yet this INVITE request did in fact fork. Consequentially and not surprisingly \" +\n                                \"the end point which accepted the INVITE (confirmed dialog) does not match the end point with \" +\n                                \"which early media has been setup (early dialog) and thus this session is unable to proceed. \" +\n                                \"In accordance with the SIP specifications, the SIP servers your end point is connected to \" +\n                                \"determine if an INVITE forks and the forking behavior of those servers cannot be controlled \" +\n                                \"by this library. If you wish to use early media with this library you must configure those \" +\n                                \"servers accordingly. Alternatively you may set the 'earlyMedia' to 'false' which will allow \" +\n                                \"this library to function with any INVITE requests which do fork.\";\n                            this.logger.error(message);\n                        }\n                        const error = new Error(\"Early media dialog does not equal confirmed dialog, terminating session\");\n                        this.logger.error(error.message);\n                        this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                        this.stateTransition(SessionState.Terminated);\n                        return Promise.reject(error);\n                    }\n                    // Otherwise we are good to go.\n                    inviteResponse.ack();\n                    this.stateTransition(SessionState.Established);\n                    return Promise.resolve();\n                }\n                // If INVITE with offer and we have been waiting till now to apply the answer.\n                const answer = session.answer;\n                if (!answer) {\n                    throw new Error(\"Answer is undefined.\");\n                }\n                const options = {\n                    sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                    sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                };\n                return this.setAnswer(answer, options)\n                    .then(() => {\n                    // This session has completed an initial offer/answer exchange...\n                    let ackOptions;\n                    if (this._renderbody && this._rendertype) {\n                        ackOptions = {\n                            body: { contentDisposition: \"render\", contentType: this._rendertype, content: this._renderbody }\n                        };\n                    }\n                    inviteResponse.ack(ackOptions);\n                    this.stateTransition(SessionState.Established);\n                })\n                    .catch((error) => {\n                    this.logger.error(error.message);\n                    this.ackAndBye(inviteResponse, 488, \"Not Acceptable Here\");\n                    this.stateTransition(SessionState.Terminated);\n                    throw error;\n                });\n            }\n            case SignalingState.Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle provisional response to initial INVITE.\n     * @param inviteResponse - 1xx response.\n     */\n    onProgress(inviteResponse) {\n        var _a;\n        this.logger.log(\"Inviter.onProgress\");\n        // validate state\n        if (this.state !== SessionState.Establishing) {\n            this.logger.error(`Progress received while in state ${this.state}, dropping response`);\n            return Promise.reject(new Error(`Invalid session state ${this.state}`));\n        }\n        if (!this.outgoingInviteRequest) {\n            throw new Error(\"Outgoing INVITE request undefined.\");\n        }\n        const response = inviteResponse.message;\n        const session = inviteResponse.session;\n        // Ported - Set assertedIdentity.\n        if (response.hasHeader(\"P-Asserted-Identity\")) {\n            this._assertedIdentity = Grammar.nameAddrHeaderParse(response.getHeader(\"P-Asserted-Identity\"));\n        }\n        // If a provisional response is received for an initial request, and\n        // that response contains a Require header field containing the option\n        // tag 100rel, the response is to be sent reliably.  If the response is\n        // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n        // ignored, and the procedures below MUST NOT be used.\n        // https://tools.ietf.org/html/rfc3262#section-4\n        const requireHeader = response.getHeader(\"require\");\n        const rseqHeader = response.getHeader(\"rseq\");\n        const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n        const responseReliable = !!rseq;\n        const extraHeaders = [];\n        if (responseReliable) {\n            extraHeaders.push(\"RAck: \" + response.getHeader(\"rseq\") + \" \" + response.getHeader(\"cseq\"));\n        }\n        switch (session.signalingState) {\n            case SignalingState.Initial:\n                // INVITE without offer and session still has no offer (and no answer).\n                if (responseReliable) {\n                    // Similarly, if a reliable provisional\n                    // response is the first reliable message sent back to the UAC, and the\n                    // INVITE did not contain an offer, one MUST appear in that reliable\n                    // provisional response.\n                    // https://tools.ietf.org/html/rfc3262#section-5\n                    this.logger.warn(\"First reliable provisional response received MUST contain an offer when INVITE does not contain an offer.\");\n                    // FIXME: Known popular UA's currently end up here...\n                    inviteResponse.prack({ extraHeaders });\n                }\n                return Promise.resolve();\n            case SignalingState.HaveLocalOffer:\n                // INVITE with offer and session only has that initial local offer.\n                if (responseReliable) {\n                    inviteResponse.prack({ extraHeaders });\n                }\n                return Promise.resolve();\n            case SignalingState.HaveRemoteOffer:\n                if (!responseReliable) {\n                    // The initial offer MUST be in either an INVITE or, if not there,\n                    // in the first reliable non-failure message from the UAS back to\n                    // the UAC.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // According to Section 13.2.1 of [RFC3261], 'The first reliable\n                    // non-failure message' must have an offer if there is no offer in the\n                    // INVITE request.  This means that the User Agent (UA) that receives\n                    // the INVITE request without an offer must include an offer in the\n                    // first reliable response with 100rel extension.  If no reliable\n                    // provisional response has been sent, the User Agent Server (UAS) must\n                    // include an offer when sending 2xx response.\n                    // https://tools.ietf.org/html/rfc6337#section-2.2\n                    this.logger.warn(\"Non-reliable provisional response MUST NOT contain an initial offer, discarding response.\");\n                    return Promise.resolve();\n                }\n                {\n                    // If the initial offer is in the first reliable non-failure\n                    // message from the UAS back to UAC, the answer MUST be in the\n                    // acknowledgement for that message\n                    const sdh = this.sessionDescriptionHandlerFactory(this, this.userAgent.configuration.sessionDescriptionHandlerFactoryOptions || {});\n                    if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onSessionDescriptionHandler) {\n                        this.delegate.onSessionDescriptionHandler(sdh, true);\n                    }\n                    this.earlyMediaSessionDescriptionHandlers.set(session.id, sdh);\n                    return sdh\n                        .setDescription(response.body, this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers)\n                        .then(() => sdh.getDescription(this.sessionDescriptionHandlerOptions, this.sessionDescriptionHandlerModifiers))\n                        .then((description) => {\n                        const body = {\n                            contentDisposition: \"session\",\n                            contentType: description.contentType,\n                            content: description.body\n                        };\n                        inviteResponse.prack({ extraHeaders, body });\n                    })\n                        .catch((error) => {\n                        this.stateTransition(SessionState.Terminated);\n                        throw error;\n                    });\n                }\n            case SignalingState.Stable:\n                // This session has completed an initial offer/answer exchange, so...\n                // - INVITE with SDP and this provisional response MAY be reliable\n                // - INVITE without SDP and this provisional response MAY be reliable\n                if (responseReliable) {\n                    inviteResponse.prack({ extraHeaders });\n                }\n                if (this.earlyMedia && !this.earlyMediaDialog) {\n                    this.earlyMediaDialog = session;\n                    const answer = session.answer;\n                    if (!answer) {\n                        throw new Error(\"Answer is undefined.\");\n                    }\n                    const options = {\n                        sessionDescriptionHandlerModifiers: this.sessionDescriptionHandlerModifiers,\n                        sessionDescriptionHandlerOptions: this.sessionDescriptionHandlerOptions\n                    };\n                    return this.setAnswer(answer, options).catch((error) => {\n                        this.stateTransition(SessionState.Terminated);\n                        throw error;\n                    });\n                }\n                return Promise.resolve();\n            case SignalingState.Closed:\n                // Dialog has terminated.\n                return Promise.reject(new Error(\"Terminated.\"));\n            default:\n                throw new Error(\"Unknown session signaling state.\");\n        }\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 3xx response.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onRedirect(inviteResponse) {\n        this.logger.log(\"Inviter.onRedirect\");\n        // validate state\n        if (this.state !== SessionState.Establishing && this.state !== SessionState.Terminating) {\n            this.logger.error(`Redirect received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 4xx, 5xx, or 6xx response.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onReject(inviteResponse) {\n        this.logger.log(\"Inviter.onReject\");\n        // validate state\n        if (this.state !== SessionState.Establishing && this.state !== SessionState.Terminating) {\n            this.logger.error(`Reject received while in state ${this.state}, dropping response`);\n            return;\n        }\n        // transition state\n        this.stateTransition(SessionState.Terminated);\n    }\n    /**\n     * Handle final response to initial INVITE.\n     * @param inviteResponse - 100 response.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    onTrying(inviteResponse) {\n        this.logger.log(\"Inviter.onTrying\");\n        // validate state\n        if (this.state !== SessionState.Establishing) {\n            this.logger.error(`Trying received while in state ${this.state}, dropping response`);\n            return;\n        }\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\n/**\n * A messager sends a {@link Message} (outgoing MESSAGE).\n * @public\n */\nexport class Messager {\n    /**\n     * Constructs a new instance of the `Messager` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param content - Content for the body of the message.\n     * @param contentType - Content type of the body of the message.\n     * @param options - Options bucket. See {@link MessagerOptions} for details.\n     */\n    constructor(userAgent, targetURI, content, contentType = \"text/plain\", options = {}) {\n        // Logger\n        this.logger = userAgent.getLogger(\"sip.Messager\");\n        // Default options params\n        options.params = options.params || {};\n        // URIs\n        let fromURI = userAgent.userAgentCore.configuration.aor;\n        if (options.params.fromUri) {\n            fromURI =\n                typeof options.params.fromUri === \"string\" ? Grammar.URIParse(options.params.fromUri) : options.params.fromUri;\n        }\n        if (!fromURI) {\n            throw new TypeError(\"Invalid from URI: \" + options.params.fromUri);\n        }\n        let toURI = targetURI;\n        if (options.params.toUri) {\n            toURI = typeof options.params.toUri === \"string\" ? Grammar.URIParse(options.params.toUri) : options.params.toUri;\n        }\n        if (!toURI) {\n            throw new TypeError(\"Invalid to URI: \" + options.params.toUri);\n        }\n        // Message params\n        const params = options.params ? Object.assign({}, options.params) : {};\n        // Extra headers\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Body\n        const contentDisposition = \"render\";\n        const body = {\n            contentDisposition,\n            contentType,\n            content\n        };\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage(C.MESSAGE, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // User agent\n        this.userAgent = userAgent;\n    }\n    /**\n     * Send the message.\n     */\n    message(options = {}) {\n        this.userAgent.userAgentCore.request(this.request, options.requestDelegate);\n        return Promise.resolve();\n    }\n}\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { equivalentURI, URI } from \"../grammar/uri.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { RequestPendingError } from \"./exceptions/request-pending.js\";\nimport { RegistererState } from \"./registerer-state.js\";\n/**\n * A registerer registers a contact for an address of record (outgoing REGISTER).\n * @public\n */\nexport class Registerer {\n    /**\n     * Constructs a new instance of the `Registerer` class.\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param options - Options bucket. See {@link RegistererOptions} for details.\n     */\n    constructor(userAgent, options = {}) {\n        this.disposed = false;\n        /** The contacts returned from the most recent accepted REGISTER request. */\n        this._contacts = [];\n        /** The number of seconds to wait before retrying to register. */\n        this._retryAfter = undefined;\n        /** The registration state. */\n        this._state = RegistererState.Initial;\n        /** True is waiting for final response to outstanding REGISTER request. */\n        this._waiting = false;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        // waiting emitter\n        this._waitingEventEmitter = new EmitterImpl();\n        // Set user agent\n        this.userAgent = userAgent;\n        // Default registrar is domain portion of user agent uri\n        const defaultUserAgentRegistrar = userAgent.configuration.uri.clone();\n        defaultUserAgentRegistrar.user = undefined;\n        // Initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign({}, Registerer.defaultOptions()), { registrar: defaultUserAgentRegistrar }), Registerer.stripUndefinedProperties(options));\n        // Make sure we are not using references to array options\n        this.options.extraContactHeaderParams = (this.options.extraContactHeaderParams || []).slice();\n        this.options.extraHeaders = (this.options.extraHeaders || []).slice();\n        // Make sure we are not using references to registrar uri\n        if (!this.options.registrar) {\n            throw new Error(\"Registrar undefined.\");\n        }\n        this.options.registrar = this.options.registrar.clone();\n        // Set instanceId and regId conditional defaults and validate\n        if (this.options.regId && !this.options.instanceId) {\n            this.options.instanceId = this.userAgent.instanceId;\n        }\n        else if (!this.options.regId && this.options.instanceId) {\n            this.options.regId = 1;\n        }\n        if (this.options.instanceId && Grammar.parse(this.options.instanceId, \"uuid\") === -1) {\n            throw new Error(\"Invalid instanceId.\");\n        }\n        if (this.options.regId && this.options.regId < 0) {\n            throw new Error(\"Invalid regId.\");\n        }\n        const registrar = this.options.registrar;\n        const fromURI = (this.options.params && this.options.params.fromUri) || userAgent.userAgentCore.configuration.aor;\n        const toURI = (this.options.params && this.options.params.toUri) || userAgent.configuration.uri;\n        const params = this.options.params || {};\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage(C.REGISTER, registrar, fromURI, toURI, params, extraHeaders, undefined);\n        // Registration expires\n        this.expires = this.options.expires || Registerer.defaultExpires;\n        if (this.expires < 0) {\n            throw new Error(\"Invalid expires.\");\n        }\n        // Interval at which re-REGISTER requests are sent\n        this.refreshFrequency = this.options.refreshFrequency || Registerer.defaultRefreshFrequency;\n        if (this.refreshFrequency < 50 || this.refreshFrequency > 99) {\n            throw new Error(\"Invalid refresh frequency. The value represents a percentage of the expiration time and should be between 50 and 99.\");\n        }\n        // initialize logger\n        this.logger = userAgent.getLogger(\"sip.Registerer\");\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key) => {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch (key) {\n                    case \"registrar\":\n                        this.logger.log(\"· \" + key + \": \" + value);\n                        break;\n                    default:\n                        this.logger.log(\"· \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // Identifier\n        this.id = this.request.callId + this.request.from.parameters.tag;\n        // Add to the user agent's session collection.\n        this.userAgent._registerers[this.id] = this;\n    }\n    /** Default registerer options. */\n    static defaultOptions() {\n        return {\n            expires: Registerer.defaultExpires,\n            extraContactHeaderParams: [],\n            extraHeaders: [],\n            logConfiguration: true,\n            instanceId: \"\",\n            params: {},\n            regId: 0,\n            registrar: new URI(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            refreshFrequency: Registerer.defaultRefreshFrequency\n        };\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */\n    static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key) => {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                object[key] = options[key];\n            }\n            return object;\n        }, {});\n    }\n    /** The registered contacts. */\n    get contacts() {\n        return this._contacts.slice();\n    }\n    /**\n     * The number of seconds to wait before retrying to register.\n     * @defaultValue `undefined`\n     * @remarks\n     * When the server rejects a registration request, if it provides a suggested\n     * duration to wait before retrying, that value is available here when and if\n     * the state transitions to `Unsubscribed`. It is also available during the\n     * callback to `onReject` after a call to `register`. (Note that if the state\n     * if already `Unsubscribed`, a rejected request created by `register` will\n     * not cause the state to transition to `Unsubscribed`. One way to avoid this\n     * case is to dispose of `Registerer` when unregistered and create a new\n     * `Registerer` for any attempts to retry registering.)\n     * @example\n     * ```ts\n     * // Checking for retry after on state change\n     * registerer.stateChange.addListener((newState) => {\n     *   switch (newState) {\n     *     case RegistererState.Unregistered:\n     *       const retryAfter = registerer.retryAfter;\n     *       break;\n     *   }\n     * });\n     *\n     * // Checking for retry after on request rejection\n     * registerer.register({\n     *   requestDelegate: {\n     *     onReject: () => {\n     *       const retryAfter = registerer.retryAfter;\n     *     }\n     *   }\n     * });\n     * ```\n     */\n    get retryAfter() {\n        return this._retryAfter;\n    }\n    /** The registration state. */\n    get state() {\n        return this._state;\n    }\n    /** Emits when the registerer state changes. */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /** Destructor. */\n    dispose() {\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        this.logger.log(`Registerer ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's registerer collection\n        delete this.userAgent._registerers[this.id];\n        // If registered, unregisters and resolves after final response received.\n        return new Promise((resolve) => {\n            const doClose = () => {\n                // If we are registered, unregister and resolve after our state changes\n                if (!this.waiting && this._state === RegistererState.Registered) {\n                    this.stateChange.addListener(() => {\n                        this.terminated();\n                        resolve();\n                    }, { once: true });\n                    this.unregister();\n                    return;\n                }\n                // Otherwise just resolve\n                this.terminated();\n                resolve();\n            };\n            // If we are waiting for an outstanding request, wait for it to finish and then try closing.\n            // Otherwise just try closing.\n            if (this.waiting) {\n                this.waitingChange.addListener(() => {\n                    doClose();\n                }, { once: true });\n            }\n            else {\n                doClose();\n            }\n        });\n    }\n    /**\n     * Sends the REGISTER request.\n     * @remarks\n     * If successful, sends re-REGISTER requests prior to registration expiration until `unsubscribe()` is called.\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */\n    register(options = {}) {\n        if (this.state === RegistererState.Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            this.stateError();\n            throw new Error(\"Registerer disposed. Unable to register.\");\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new RequestPendingError(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        // Options\n        if (options.requestOptions) {\n            this.options = Object.assign(Object.assign({}, this.options), options.requestOptions);\n        }\n        // Extra headers\n        const extraHeaders = (this.options.extraHeaders || []).slice();\n        extraHeaders.push(\"Contact: \" + this.generateContactHeader(this.expires));\n        // this is UA.C.ALLOWED_METHODS, removed to get around circular dependency\n        extraHeaders.push(\"Allow: \" + [\"ACK\", \"CANCEL\", \"INVITE\", \"MESSAGE\", \"BYE\", \"OPTIONS\", \"INFO\", \"NOTIFY\", \"REFER\"].toString());\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        this.request.extraHeaders = extraHeaders;\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response) => {\n                let expires;\n                // FIXME: This does NOT appear to be to spec and should be removed.\n                // I haven't found anywhere that an Expires header may be used in a response.\n                if (response.message.hasHeader(\"expires\")) {\n                    expires = Number(response.message.getHeader(\"expires\"));\n                }\n                // 8. The registrar returns a 200 (OK) response.  The response MUST\n                // contain Contact header field values enumerating all current\n                // bindings.  Each Contact value MUST feature an \"expires\"\n                // parameter indicating its expiration interval chosen by the\n                // registrar.  The response SHOULD include a Date header field.\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                this._contacts = response.message.getHeaders(\"contact\");\n                let contacts = this._contacts.length;\n                if (!contacts) {\n                    this.logger.error(\"No Contact header in response to REGISTER, dropping response.\");\n                    this.unregistered();\n                    return;\n                }\n                // The 200 (OK) response from the registrar contains a list of Contact\n                // fields enumerating all current bindings.  The UA compares each\n                // contact address to see if it created the contact address, using\n                // comparison rules in Section 19.1.4.  If so, it updates the expiration\n                // time interval according to the expires parameter or, if absent, the\n                // Expires field value.  The UA then issues a REGISTER request for each\n                // of its bindings before the expiration interval has elapsed.\n                // https://tools.ietf.org/html/rfc3261#section-10.2.4\n                let contact;\n                while (contacts--) {\n                    contact = response.message.parseHeader(\"contact\", contacts);\n                    if (!contact) {\n                        throw new Error(\"Contact undefined\");\n                    }\n                    if (this.userAgent.contact.pubGruu && equivalentURI(contact.uri, this.userAgent.contact.pubGruu)) {\n                        expires = Number(contact.getParam(\"expires\"));\n                        break;\n                    }\n                    // If we are using a randomly generated user name (which is the default behavior)\n                    if (this.userAgent.configuration.contactName === \"\") {\n                        // compare the user portion of the URI under the assumption that it will be unique\n                        if (contact.uri.user === this.userAgent.contact.uri.user) {\n                            expires = Number(contact.getParam(\"expires\"));\n                            break;\n                        }\n                    }\n                    else {\n                        // otherwise use comparision rules in Section 19.1.4\n                        if (equivalentURI(contact.uri, this.userAgent.contact.uri)) {\n                            expires = Number(contact.getParam(\"expires\"));\n                            break;\n                        }\n                    }\n                    contact = undefined;\n                }\n                // There must be a matching contact.\n                if (contact === undefined) {\n                    this.logger.error(\"No Contact header pointing to us, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // The contact must have an expires.\n                if (expires === undefined) {\n                    this.logger.error(\"Contact pointing to us is missing expires parameter, dropping response\");\n                    this.unregistered();\n                    this.waitingToggle(false);\n                    return;\n                }\n                // Save gruu values\n                if (contact.hasParam(\"temp-gruu\")) {\n                    const gruu = contact.getParam(\"temp-gruu\");\n                    if (gruu) {\n                        this.userAgent.contact.tempGruu = Grammar.URIParse(gruu.replace(/\"/g, \"\"));\n                    }\n                }\n                if (contact.hasParam(\"pub-gruu\")) {\n                    const gruu = contact.getParam(\"pub-gruu\");\n                    if (gruu) {\n                        this.userAgent.contact.pubGruu = Grammar.URIParse(gruu.replace(/\"/g, \"\"));\n                    }\n                }\n                this.registered(expires);\n                if (options.requestDelegate && options.requestDelegate.onAccept) {\n                    options.requestDelegate.onAccept(response);\n                }\n                this.waitingToggle(false);\n            },\n            onProgress: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onProgress) {\n                    options.requestDelegate.onProgress(response);\n                }\n            },\n            onRedirect: (response) => {\n                this.logger.error(\"Redirect received. Not supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) {\n                    options.requestDelegate.onRedirect(response);\n                }\n                this.waitingToggle(false);\n            },\n            onReject: (response) => {\n                if (response.message.statusCode === 423) {\n                    // If a UA receives a 423 (Interval Too Brief) response, it MAY retry\n                    // the registration after making the expiration interval of all contact\n                    // addresses in the REGISTER request equal to or greater than the\n                    // expiration interval within the Min-Expires header field of the 423\n                    // (Interval Too Brief) response.\n                    // https://tools.ietf.org/html/rfc3261#section-10.2.8\n                    //\n                    // The registrar MAY choose an expiration less than the requested\n                    // expiration interval.  If and only if the requested expiration\n                    // interval is greater than zero AND smaller than one hour AND\n                    // less than a registrar-configured minimum, the registrar MAY\n                    // reject the registration with a response of 423 (Interval Too\n                    // Brief).  This response MUST contain a Min-Expires header field\n                    // that states the minimum expiration interval the registrar is\n                    // willing to honor.  It then skips the remaining steps.\n                    // https://tools.ietf.org/html/rfc3261#section-10.3\n                    if (!response.message.hasHeader(\"min-expires\")) {\n                        // This response MUST contain a Min-Expires header field\n                        this.logger.error(\"423 response received for REGISTER without Min-Expires, dropping response\");\n                        this.unregistered();\n                        this.waitingToggle(false);\n                        return;\n                    }\n                    // Increase our registration interval to the suggested minimum\n                    this.expires = Number(response.message.getHeader(\"min-expires\"));\n                    // Attempt the registration again immediately\n                    this.waitingToggle(false);\n                    this.register();\n                    return;\n                }\n                this.logger.warn(`Failed to register, status code ${response.message.statusCode}`);\n                // The Retry-After header field can be used with a 500 (Server Internal\n                // Error) or 503 (Service Unavailable) response to indicate how long the\n                // service is expected to be unavailable to the requesting client...\n                // https://tools.ietf.org/html/rfc3261#section-20.33\n                let retryAfterDuration = NaN;\n                if (response.message.statusCode === 500 || response.message.statusCode === 503) {\n                    const header = response.message.getHeader(\"retry-after\");\n                    if (header) {\n                        retryAfterDuration = Number.parseInt(header, undefined);\n                    }\n                }\n                // Set for the state change (if any) and the delegate callback (if any)\n                this._retryAfter = isNaN(retryAfterDuration) ? undefined : retryAfterDuration;\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) {\n                    options.requestDelegate.onReject(response);\n                }\n                this._retryAfter = undefined;\n                this.waitingToggle(false);\n            },\n            onTrying: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onTrying) {\n                    options.requestDelegate.onTrying(response);\n                }\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Sends the REGISTER request with expires equal to zero.\n     * @remarks\n     * Rejects with `RequestPendingError` if a REGISTER request is already in progress.\n     */\n    unregister(options = {}) {\n        if (this.state === RegistererState.Terminated) {\n            this.stateError();\n            throw new Error(\"Registerer terminated. Unable to register.\");\n        }\n        if (this.disposed) {\n            if (this.state !== RegistererState.Registered) {\n                // allows unregister while disposing and registered\n                this.stateError();\n                throw new Error(\"Registerer disposed. Unable to register.\");\n            }\n        }\n        // UAs MUST NOT send a new registration (that is, containing new Contact\n        // header field values, as opposed to a retransmission) until they have\n        // received a final response from the registrar for the previous one or\n        // the previous REGISTER request has timed out.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        if (this.waiting) {\n            this.waitingWarning();\n            const error = new RequestPendingError(\"REGISTER request already in progress, waiting for final response\");\n            return Promise.reject(error);\n        }\n        if (this._state !== RegistererState.Registered && !options.all) {\n            this.logger.warn(\"Not currently registered, but sending an unregister anyway.\");\n        }\n        // Extra headers\n        const extraHeaders = ((options.requestOptions && options.requestOptions.extraHeaders) || []).slice();\n        this.request.extraHeaders = extraHeaders;\n        // Registrations are soft state and expire unless refreshed, but can\n        // also be explicitly removed.  A client can attempt to influence the\n        // expiration interval selected by the registrar as described in Section\n        // 10.2.1.  A UA requests the immediate removal of a binding by\n        // specifying an expiration interval of \"0\" for that contact address in\n        // a REGISTER request.  UAs SHOULD support this mechanism so that\n        // bindings can be removed before their expiration interval has passed.\n        //\n        // The REGISTER-specific Contact header field value of \"*\" applies to\n        // all registrations, but it MUST NOT be used unless the Expires header\n        // field is present with a value of \"0\".\n        // https://tools.ietf.org/html/rfc3261#section-10.2.2\n        if (options.all) {\n            extraHeaders.push(\"Contact: *\");\n            extraHeaders.push(\"Expires: 0\");\n        }\n        else {\n            extraHeaders.push(\"Contact: \" + this.generateContactHeader(0));\n        }\n        // Call-ID: All registrations from a UAC SHOULD use the same Call-ID\n        // header field value for registrations sent to a particular\n        // registrar.\n        //\n        // CSeq: The CSeq value guarantees proper ordering of REGISTER\n        // requests.  A UA MUST increment the CSeq value by one for each\n        // REGISTER request with the same Call-ID.\n        // https://tools.ietf.org/html/rfc3261#section-10.2\n        this.request.cseq++;\n        this.request.setHeader(\"cseq\", this.request.cseq + \" REGISTER\");\n        // Pre-emptive clear the registration timer to avoid a race condition where\n        // this timer fires while waiting for a final response to the unsubscribe.\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        this.waitingToggle(true);\n        const outgoingRegisterRequest = this.userAgent.userAgentCore.register(this.request, {\n            onAccept: (response) => {\n                this._contacts = response.message.getHeaders(\"contact\"); // Update contacts\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onAccept) {\n                    options.requestDelegate.onAccept(response);\n                }\n                this.waitingToggle(false);\n            },\n            onProgress: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onProgress) {\n                    options.requestDelegate.onProgress(response);\n                }\n            },\n            onRedirect: (response) => {\n                this.logger.error(\"Unregister redirected. Not currently supported.\");\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onRedirect) {\n                    options.requestDelegate.onRedirect(response);\n                }\n                this.waitingToggle(false);\n            },\n            onReject: (response) => {\n                this.logger.error(`Unregister rejected with status code ${response.message.statusCode}`);\n                this.unregistered();\n                if (options.requestDelegate && options.requestDelegate.onReject) {\n                    options.requestDelegate.onReject(response);\n                }\n                this.waitingToggle(false);\n            },\n            onTrying: (response) => {\n                if (options.requestDelegate && options.requestDelegate.onTrying) {\n                    options.requestDelegate.onTrying(response);\n                }\n            }\n        });\n        return Promise.resolve(outgoingRegisterRequest);\n    }\n    /**\n     * Clear registration timers.\n     */\n    clearTimers() {\n        if (this.registrationTimer !== undefined) {\n            clearTimeout(this.registrationTimer);\n            this.registrationTimer = undefined;\n        }\n        if (this.registrationExpiredTimer !== undefined) {\n            clearTimeout(this.registrationExpiredTimer);\n            this.registrationExpiredTimer = undefined;\n        }\n    }\n    /**\n     * Generate Contact Header\n     */\n    generateContactHeader(expires) {\n        let contact = this.userAgent.contact.toString({ register: true });\n        if (this.options.regId && this.options.instanceId) {\n            contact += \";reg-id=\" + this.options.regId;\n            contact += ';+sip.instance=\"<urn:uuid:' + this.options.instanceId + '>\"';\n        }\n        if (this.options.extraContactHeaderParams) {\n            this.options.extraContactHeaderParams.forEach((header) => {\n                contact += \";\" + header;\n            });\n        }\n        contact += \";expires=\" + expires;\n        return contact;\n    }\n    /**\n     * Helper function, called when registered.\n     */\n    registered(expires) {\n        this.clearTimers();\n        // Re-Register before the expiration interval has elapsed.\n        // For that, calculate the delay as a percentage of the expiration time\n        this.registrationTimer = setTimeout(() => {\n            this.registrationTimer = undefined;\n            this.register();\n        }, (this.refreshFrequency / 100) * expires * 1000);\n        // We are unregistered if the registration expires.\n        this.registrationExpiredTimer = setTimeout(() => {\n            this.logger.warn(\"Registration expired\");\n            this.unregistered();\n        }, expires * 1000);\n        if (this._state !== RegistererState.Registered) {\n            this.stateTransition(RegistererState.Registered);\n        }\n    }\n    /**\n     * Helper function, called when unregistered.\n     */\n    unregistered() {\n        this.clearTimers();\n        if (this._state !== RegistererState.Unregistered) {\n            this.stateTransition(RegistererState.Unregistered);\n        }\n    }\n    /**\n     * Helper function, called when terminated.\n     */\n    terminated() {\n        this.clearTimers();\n        if (this._state !== RegistererState.Terminated) {\n            this.stateTransition(RegistererState.Terminated);\n        }\n    }\n    /**\n     * Transition registration state.\n     */\n    stateTransition(newState) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch (this._state) {\n            case RegistererState.Initial:\n                if (newState !== RegistererState.Registered &&\n                    newState !== RegistererState.Unregistered &&\n                    newState !== RegistererState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case RegistererState.Registered:\n                if (newState !== RegistererState.Unregistered && newState !== RegistererState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case RegistererState.Unregistered:\n                if (newState !== RegistererState.Registered && newState !== RegistererState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case RegistererState.Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Registration transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === RegistererState.Terminated) {\n            this.dispose();\n        }\n    }\n    /** True if the registerer is currently waiting for final response to a REGISTER request. */\n    get waiting() {\n        return this._waiting;\n    }\n    /** Emits when the registerer waiting state changes. */\n    get waitingChange() {\n        return this._waitingEventEmitter;\n    }\n    /**\n     * Toggle waiting.\n     */\n    waitingToggle(waiting) {\n        if (this._waiting === waiting) {\n            throw new Error(`Invalid waiting transition from ${this._waiting} to ${waiting}`);\n        }\n        this._waiting = waiting;\n        this.logger.log(`Waiting toggled to ${this._waiting}`);\n        this._waitingEventEmitter.emit(this._waiting);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */\n    waitingWarning() {\n        let message = \"An attempt was made to send a REGISTER request while a prior one was still in progress.\";\n        message += \" RFC 3261 requires UAs MUST NOT send a new registration until they have received a final response\";\n        message += \" from the registrar for the previous one or the previous REGISTER request has timed out.\";\n        message += \" Note that if the transport disconnects, you still must wait for the prior request to time out before\";\n        message +=\n            \" sending a new REGISTER request or alternatively dispose of the current Registerer and create a new Registerer.\";\n        this.logger.warn(message);\n    }\n    /** Hopefully helpful as the standard behavior has been found to be unexpected. */\n    stateError() {\n        const reason = this.state === RegistererState.Terminated ? \"is in 'Terminated' state\" : \"has been disposed\";\n        let message = `An attempt was made to send a REGISTER request when the Registerer ${reason}.`;\n        message += \" The Registerer transitions to 'Terminated' when Registerer.dispose() is called.\";\n        message += \" Perhaps you called UserAgent.stop() which dipsoses of all Registerers?\";\n        this.logger.error(message);\n    }\n}\nRegisterer.defaultExpires = 600;\nRegisterer.defaultRefreshFrequency = 99;\n","/**\n * {@link Registerer} state.\n * @remarks\n * The {@link Registerer} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                   __________________________________________\n *                  |  __________________________              |\n * Registerer       | |                          v             v\n * Constructed -> Initial -> Registered -> Unregistered -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */\nexport var RegistererState;\n(function (RegistererState) {\n    RegistererState[\"Initial\"] = \"Initial\";\n    RegistererState[\"Registered\"] = \"Registered\";\n    RegistererState[\"Unregistered\"] = \"Unregistered\";\n    RegistererState[\"Terminated\"] = \"Terminated\";\n})(RegistererState = RegistererState || (RegistererState = {}));\n","import { Grammar } from \"../grammar/grammar.js\";\nimport { URI } from \"../grammar/uri.js\";\nimport { DigestAuthentication } from \"../core/messages/digest-authentication.js\";\nimport { IncomingRequestMessage } from \"../core/messages/incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"../core/messages/incoming-response-message.js\";\nimport { Levels } from \"../core/log/levels.js\";\nimport { LoggerFactory } from \"../core/log/logger-factory.js\";\nimport { Parser } from \"../core/messages/parser.js\";\nimport { UserAgentCore } from \"../core/user-agent-core/user-agent-core.js\";\nimport { createRandomToken, utf8Length } from \"../core/messages/utils.js\";\nimport { defaultSessionDescriptionHandlerFactory } from \"../platform/web/session-description-handler/session-description-handler-factory-default.js\";\nimport { Transport as WebTransport } from \"../platform/web/transport/transport.js\";\nimport { LIBRARY_VERSION } from \"../version.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { Invitation } from \"./invitation.js\";\nimport { Inviter } from \"./inviter.js\";\nimport { Message } from \"./message.js\";\nimport { Notification } from \"./notification.js\";\nimport { SIPExtension, UserAgentRegisteredOptionTags } from \"./user-agent-options.js\";\nimport { UserAgentState } from \"./user-agent-state.js\";\n/**\n * A user agent sends and receives requests using a `Transport`.\n *\n * @remarks\n * A user agent (UA) is associated with a user via the user's SIP address of record (AOR)\n * and acts on behalf of that user to send and receive SIP requests. The user agent can\n * register to receive incoming requests, as well as create and send outbound messages.\n * The user agent also maintains the Transport over which its signaling travels.\n *\n * @public\n */\nexport class UserAgent {\n    /**\n     * Constructs a new instance of the `UserAgent` class.\n     * @param options - Options bucket. See {@link UserAgentOptions} for details.\n     */\n    constructor(options = {}) {\n        /** @internal */\n        this._publishers = {};\n        /** @internal */\n        this._registerers = {};\n        /** @internal */\n        this._sessions = {};\n        /** @internal */\n        this._subscriptions = {};\n        this._state = UserAgentState.Stopped;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        // initialize delegate\n        this.delegate = options.delegate;\n        // initialize configuration\n        this.options = Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, UserAgent.defaultOptions()), { sipjsId: createRandomToken(5) }), { uri: new URI(\"sip\", \"anonymous.\" + createRandomToken(6), \"anonymous.invalid\") }), { viaHost: createRandomToken(12) + \".invalid\" }), UserAgent.stripUndefinedProperties(options));\n        // viaHost is hack\n        if (this.options.hackIpInContact) {\n            if (typeof this.options.hackIpInContact === \"boolean\" && this.options.hackIpInContact) {\n                const from = 1;\n                const to = 254;\n                const octet = Math.floor(Math.random() * (to - from + 1) + from);\n                // random Test-Net IP (http://tools.ietf.org/html/rfc5735)\n                this.options.viaHost = \"192.0.2.\" + octet;\n            }\n            else if (this.options.hackIpInContact) {\n                this.options.viaHost = this.options.hackIpInContact;\n            }\n        }\n        // initialize logger & logger factory\n        this.loggerFactory = new LoggerFactory();\n        this.logger = this.loggerFactory.getLogger(\"sip.UserAgent\");\n        this.loggerFactory.builtinEnabled = this.options.logBuiltinEnabled;\n        this.loggerFactory.connector = this.options.logConnector;\n        switch (this.options.logLevel) {\n            case \"error\":\n                this.loggerFactory.level = Levels.error;\n                break;\n            case \"warn\":\n                this.loggerFactory.level = Levels.warn;\n                break;\n            case \"log\":\n                this.loggerFactory.level = Levels.log;\n                break;\n            case \"debug\":\n                this.loggerFactory.level = Levels.debug;\n                break;\n            default:\n                break;\n        }\n        if (this.options.logConfiguration) {\n            this.logger.log(\"Configuration:\");\n            Object.keys(this.options).forEach((key) => {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                const value = this.options[key];\n                switch (key) {\n                    case \"uri\":\n                    case \"sessionDescriptionHandlerFactory\":\n                        this.logger.log(\"· \" + key + \": \" + value);\n                        break;\n                    case \"authorizationPassword\":\n                        this.logger.log(\"· \" + key + \": \" + \"NOT SHOWN\");\n                        break;\n                    case \"transportConstructor\":\n                        this.logger.log(\"· \" + key + \": \" + value.name);\n                        break;\n                    default:\n                        this.logger.log(\"· \" + key + \": \" + JSON.stringify(value));\n                }\n            });\n        }\n        // guard deprecated transport options (remove this in version 16.x)\n        if (this.options.transportOptions) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = this.options.transportOptions;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated.maxReconnectionAttempts;\n            const reconnectionTimeoutDeprecated = optionsDeprecated.reconnectionTimeout;\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (reconnectionTimeoutDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"reconnectionTimeout\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (options.reconnectionDelay === undefined && reconnectionTimeoutDeprecated !== undefined) {\n                this.options.reconnectionDelay = reconnectionTimeoutDeprecated;\n            }\n            if (options.reconnectionAttempts === undefined && maxReconnectionAttemptsDeprecated !== undefined) {\n                this.options.reconnectionAttempts = maxReconnectionAttemptsDeprecated;\n            }\n        }\n        // guard deprecated user agent options (remove this in version 16.x)\n        if (options.reconnectionDelay !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionDelay\" as has apparently been specified and has been deprecated. ` +\n                \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        if (options.reconnectionAttempts !== undefined) {\n            const deprecatedMessage = `The user agent option \"reconnectionAttempts\" as has apparently been specified and has been deprecated. ` +\n                \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n            this.logger.warn(deprecatedMessage);\n        }\n        // Initialize Transport\n        this._transport = new this.options.transportConstructor(this.getLogger(\"sip.Transport\"), this.options.transportOptions);\n        this.initTransportCallbacks();\n        // Initialize Contact\n        this._contact = this.initContact();\n        // Set instance id\n        this._instanceId = this.options.instanceId ? this.options.instanceId : UserAgent.newUUID();\n        if (Grammar.parse(this._instanceId, \"uuid\") === -1) {\n            throw new Error(\"Invalid instanceId.\");\n        }\n        // Initialize UserAgentCore\n        this._userAgentCore = this.initCore();\n    }\n    /**\n     * Create a URI instance from a string.\n     * @param uri - The string to parse.\n     *\n     * @remarks\n     * Returns undefined if the syntax of the URI is invalid.\n     * The syntax must conform to a SIP URI as defined in the RFC.\n     * 25 Augmented BNF for the SIP Protocol\n     * https://tools.ietf.org/html/rfc3261#section-25\n     *\n     * @example\n     * ```ts\n     * const uri = UserAgent.makeURI(\"sip:edgar@example.com\");\n     * ```\n     */\n    static makeURI(uri) {\n        return Grammar.URIParse(uri);\n    }\n    /** Default user agent options. */\n    static defaultOptions() {\n        return {\n            allowLegacyNotifications: false,\n            authorizationHa1: \"\",\n            authorizationPassword: \"\",\n            authorizationUsername: \"\",\n            delegate: {},\n            contactName: \"\",\n            contactParams: { transport: \"ws\" },\n            displayName: \"\",\n            forceRport: false,\n            gracefulShutdown: true,\n            hackAllowUnregisteredOptionTags: false,\n            hackIpInContact: false,\n            hackViaTcp: false,\n            instanceId: \"\",\n            instanceIdAlwaysAdded: false,\n            logBuiltinEnabled: true,\n            logConfiguration: true,\n            logConnector: () => {\n                /* noop */\n            },\n            logLevel: \"log\",\n            noAnswerTimeout: 60,\n            preloadedRouteSet: [],\n            reconnectionAttempts: 0,\n            reconnectionDelay: 4,\n            sendInitialProvisionalResponse: true,\n            sessionDescriptionHandlerFactory: defaultSessionDescriptionHandlerFactory(),\n            sessionDescriptionHandlerFactoryOptions: {},\n            sipExtension100rel: SIPExtension.Unsupported,\n            sipExtensionReplaces: SIPExtension.Unsupported,\n            sipExtensionExtraSupported: [],\n            sipjsId: \"\",\n            transportConstructor: WebTransport,\n            transportOptions: {},\n            uri: new URI(\"sip\", \"anonymous\", \"anonymous.invalid\"),\n            userAgentString: \"SIP.js/\" + LIBRARY_VERSION,\n            viaHost: \"\"\n        };\n    }\n    // http://stackoverflow.com/users/109538/broofa\n    static newUUID() {\n        const UUID = \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, (c) => {\n            const r = Math.floor(Math.random() * 16);\n            const v = c === \"x\" ? r : (r % 4) + 8;\n            return v.toString(16);\n        });\n        return UUID;\n    }\n    /**\n     * Strip properties with undefined values from options.\n     * This is a work around while waiting for missing vs undefined to be addressed (or not)...\n     * https://github.com/Microsoft/TypeScript/issues/13195\n     * @param options - Options to reduce\n     */\n    static stripUndefinedProperties(options) {\n        return Object.keys(options).reduce((object, key) => {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            if (options[key] !== undefined) {\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                object[key] = options[key];\n            }\n            return object;\n        }, {});\n    }\n    /**\n     * User agent configuration.\n     */\n    get configuration() {\n        return this.options;\n    }\n    /**\n     * User agent contact.\n     */\n    get contact() {\n        return this._contact;\n    }\n    /**\n     * User agent instance id.\n     */\n    get instanceId() {\n        return this._instanceId;\n    }\n    /**\n     * User agent state.\n     */\n    get state() {\n        return this._state;\n    }\n    /**\n     * User agent state change emitter.\n     */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * User agent transport.\n     */\n    get transport() {\n        return this._transport;\n    }\n    /**\n     * User agent core.\n     */\n    get userAgentCore() {\n        return this._userAgentCore;\n    }\n    /**\n     * The logger.\n     */\n    getLogger(category, label) {\n        return this.loggerFactory.getLogger(category, label);\n    }\n    /**\n     * The logger factory.\n     */\n    getLoggerFactory() {\n        return this.loggerFactory;\n    }\n    /**\n     * True if transport is connected.\n     */\n    isConnected() {\n        return this.transport.isConnected();\n    }\n    /**\n     * Reconnect the transport.\n     */\n    reconnect() {\n        if (this.state === UserAgentState.Stopped) {\n            return Promise.reject(new Error(\"User agent stopped.\"));\n        }\n        // Make sure we don't call synchronously\n        return Promise.resolve().then(() => this.transport.connect());\n    }\n    /**\n     * Start the user agent.\n     *\n     * @remarks\n     * Resolves if transport connects, otherwise rejects.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * @example\n     * ```ts\n     * userAgent.start()\n     *   .then(() => {\n     *     // userAgent.isConnected() === true\n     *   })\n     *   .catch((error: Error) => {\n     *     // userAgent.isConnected() === false\n     *   });\n     * ```\n     */\n    start() {\n        if (this.state === UserAgentState.Started) {\n            this.logger.warn(`User agent already started`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Starting ${this.configuration.uri}`);\n        // Transition state\n        this.transitionState(UserAgentState.Started);\n        return this.transport.connect();\n    }\n    /**\n     * Stop the user agent.\n     *\n     * @remarks\n     * Resolves when the user agent has completed a graceful shutdown.\n     * ```txt\n     * 1) Sessions terminate.\n     * 2) Registerers unregister.\n     * 3) Subscribers unsubscribe.\n     * 4) Publishers unpublish.\n     * 5) Transport disconnects.\n     * 6) User Agent Core resets.\n     * ```\n     * The user agent state transistions to stopped once these steps have been completed.\n     * Calling `start()` after calling `stop()` will fail if `stop()` has yet to resolve.\n     *\n     * NOTE: While this is a \"graceful shutdown\", it can also be very slow one if you\n     * are waiting for the returned Promise to resolve. The disposal of the clients and\n     * dialogs is done serially - waiting on one to finish before moving on to the next.\n     * This can be slow if there are lot of subscriptions to unsubscribe for example.\n     *\n     * THE SLOW PACE IS INTENTIONAL!\n     * While one could spin them all down in parallel, this could slam the remote server.\n     * It is bad practice to denial of service attack (DoS attack) servers!!!\n     * Moreover, production servers will automatically blacklist clients which send too\n     * many requests in too short a period of time - dropping any additional requests.\n     *\n     * If a different approach to disposing is needed, one can implement whatever is\n     * needed and execute that prior to calling `stop()`. Alternatively one may simply\n     * not wait for the Promise returned by `stop()` to complete.\n     */\n    async stop() {\n        if (this.state === UserAgentState.Stopped) {\n            this.logger.warn(`User agent already stopped`);\n            return Promise.resolve();\n        }\n        this.logger.log(`Stopping ${this.configuration.uri}`);\n        // The default behavior is to cleanup dialogs and registrations. This is not that...\n        if (!this.options.gracefulShutdown) {\n            // Dispose of the transport (disconnecting)\n            this.logger.log(`Dispose of transport`);\n            this.transport.dispose().catch((error) => {\n                this.logger.error(error.message);\n                throw error;\n            });\n            // Dispose of the user agent core (resetting)\n            this.logger.log(`Dispose of core`);\n            this.userAgentCore.dispose();\n            // Reset dialogs and registrations\n            this._publishers = {};\n            this._registerers = {};\n            this._sessions = {};\n            this._subscriptions = {};\n            this.transitionState(UserAgentState.Stopped);\n            return Promise.resolve();\n        }\n        // Be careful here to use a local references as start() can be called\n        // again before we complete and we don't want to touch new clients\n        // and we don't want to step on the new instances (or vice versa).\n        const publishers = Object.assign({}, this._publishers);\n        const registerers = Object.assign({}, this._registerers);\n        const sessions = Object.assign({}, this._sessions);\n        const subscriptions = Object.assign({}, this._subscriptions);\n        const transport = this.transport;\n        const userAgentCore = this.userAgentCore;\n        //\n        // At this point we have completed the state transition and everything\n        // following will effectively run async and MUST NOT cause any issues\n        // if UserAgent.start() is called while the following code continues.\n        //\n        // TODO: Minor optimization.\n        // The disposal in all cases involves, in part, sending messages which\n        // is not worth doing if the transport is not connected as we know attempting\n        // to send messages will be futile. But none of these disposal methods check\n        // if that's is the case and it would be easy for them to do so at this point.\n        // Dispose of Registerers\n        this.logger.log(`Dispose of registerers`);\n        for (const id in registerers) {\n            if (registerers[id]) {\n                await registerers[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._registerers[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of Sessions\n        this.logger.log(`Dispose of sessions`);\n        for (const id in sessions) {\n            if (sessions[id]) {\n                await sessions[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._sessions[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of Subscriptions\n        this.logger.log(`Dispose of subscriptions`);\n        for (const id in subscriptions) {\n            if (subscriptions[id]) {\n                await subscriptions[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._subscriptions[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of Publishers\n        this.logger.log(`Dispose of publishers`);\n        for (const id in publishers) {\n            if (publishers[id]) {\n                await publishers[id].dispose().catch((error) => {\n                    this.logger.error(error.message);\n                    delete this._publishers[id];\n                    throw error;\n                });\n            }\n        }\n        // Dispose of the transport (disconnecting)\n        this.logger.log(`Dispose of transport`);\n        await transport.dispose().catch((error) => {\n            this.logger.error(error.message);\n            throw error;\n        });\n        // Dispose of the user agent core (resetting)\n        this.logger.log(`Dispose of core`);\n        userAgentCore.dispose();\n        // Transition state\n        this.transitionState(UserAgentState.Stopped);\n    }\n    /**\n     * Used to avoid circular references.\n     * @internal\n     */\n    _makeInviter(targetURI, options) {\n        return new Inviter(this, targetURI, options);\n    }\n    /**\n     * Attempt reconnection up to `maxReconnectionAttempts` times.\n     * @param reconnectionAttempt - Current attempt number.\n     */\n    attemptReconnection(reconnectionAttempt = 1) {\n        const reconnectionAttempts = this.options.reconnectionAttempts;\n        const reconnectionDelay = this.options.reconnectionDelay;\n        if (reconnectionAttempt > reconnectionAttempts) {\n            this.logger.log(`Maximum reconnection attempts reached`);\n            return;\n        }\n        this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - trying`);\n        setTimeout(() => {\n            this.reconnect()\n                .then(() => {\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - succeeded`);\n            })\n                .catch((error) => {\n                this.logger.error(error.message);\n                this.logger.log(`Reconnection attempt ${reconnectionAttempt} of ${reconnectionAttempts} - failed`);\n                this.attemptReconnection(++reconnectionAttempt);\n            });\n        }, reconnectionAttempt === 1 ? 0 : reconnectionDelay * 1000);\n    }\n    /**\n     * Initialize contact.\n     */\n    initContact() {\n        const contactName = this.options.contactName !== \"\" ? this.options.contactName : createRandomToken(8);\n        const contactParams = this.options.contactParams;\n        const contact = {\n            pubGruu: undefined,\n            tempGruu: undefined,\n            uri: new URI(\"sip\", contactName, this.options.viaHost, undefined, contactParams),\n            toString: (contactToStringOptions = {}) => {\n                const anonymous = contactToStringOptions.anonymous || false;\n                const outbound = contactToStringOptions.outbound || false;\n                const register = contactToStringOptions.register || false;\n                let contactString = \"<\";\n                // 3.3.  Using a GRUU\n                // Once a user agent obtains GRUUs from the registrar, it uses them in\n                // several ways.  First, it uses them as the contents of the Contact\n                // header field in non-REGISTER requests and responses that it emits\n                // (for example, an INVITE request and 200 OK response).\n                // https://datatracker.ietf.org/doc/html/rfc5627#section-3.3\n                if (anonymous) {\n                    contactString +=\n                        this.contact.tempGruu ||\n                            `sip:anonymous@anonymous.invalid;transport=${contactParams.transport ? contactParams.transport : \"ws\"}`;\n                }\n                else if (register) {\n                    contactString += this.contact.uri;\n                }\n                else {\n                    contactString += this.contact.pubGruu || this.contact.uri;\n                }\n                if (outbound) {\n                    contactString += \";ob\";\n                }\n                contactString += \">\";\n                if (this.options.instanceIdAlwaysAdded) {\n                    contactString += ';+sip.instance=\"<urn:uuid:' + this._instanceId + '>\"';\n                }\n                return contactString;\n            }\n        };\n        return contact;\n    }\n    /**\n     * Initialize user agent core.\n     */\n    initCore() {\n        // supported options\n        let supportedOptionTags = [];\n        supportedOptionTags.push(\"outbound\"); // TODO: is this really supported?\n        if (this.options.sipExtension100rel === SIPExtension.Supported) {\n            supportedOptionTags.push(\"100rel\");\n        }\n        if (this.options.sipExtensionReplaces === SIPExtension.Supported) {\n            supportedOptionTags.push(\"replaces\");\n        }\n        if (this.options.sipExtensionExtraSupported) {\n            supportedOptionTags.push(...this.options.sipExtensionExtraSupported);\n        }\n        if (!this.options.hackAllowUnregisteredOptionTags) {\n            supportedOptionTags = supportedOptionTags.filter((optionTag) => UserAgentRegisteredOptionTags[optionTag]);\n        }\n        supportedOptionTags = Array.from(new Set(supportedOptionTags)); // array of unique values\n        // FIXME: TODO: This was ported, but this is and was just plain broken.\n        const supportedOptionTagsResponse = supportedOptionTags.slice();\n        if (this.contact.pubGruu || this.contact.tempGruu) {\n            supportedOptionTagsResponse.push(\"gruu\");\n        }\n        // core configuration\n        const userAgentCoreConfiguration = {\n            aor: this.options.uri,\n            contact: this.contact,\n            displayName: this.options.displayName,\n            loggerFactory: this.loggerFactory,\n            hackViaTcp: this.options.hackViaTcp,\n            routeSet: this.options.preloadedRouteSet,\n            supportedOptionTags,\n            supportedOptionTagsResponse,\n            sipjsId: this.options.sipjsId,\n            userAgentHeaderFieldValue: this.options.userAgentString,\n            viaForceRport: this.options.forceRport,\n            viaHost: this.options.viaHost,\n            authenticationFactory: () => {\n                const username = this.options.authorizationUsername\n                    ? this.options.authorizationUsername\n                    : this.options.uri.user; // if authorization username not provided, use uri user as username\n                const password = this.options.authorizationPassword ? this.options.authorizationPassword : undefined;\n                const ha1 = this.options.authorizationHa1 ? this.options.authorizationHa1 : undefined;\n                return new DigestAuthentication(this.getLoggerFactory(), ha1, username, password);\n            },\n            transportAccessor: () => this.transport\n        };\n        const userAgentCoreDelegate = {\n            onInvite: (incomingInviteRequest) => {\n                var _a;\n                const invitation = new Invitation(this, incomingInviteRequest);\n                incomingInviteRequest.delegate = {\n                    onCancel: (cancel) => {\n                        invitation._onCancel(cancel);\n                    },\n                    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                    onTransportError: (error) => {\n                        // A server transaction MUST NOT discard transaction state based only on\n                        // encountering a non-recoverable transport error when sending a\n                        // response.  Instead, the associated INVITE server transaction state\n                        // machine MUST remain in its current state.  (Timers will eventually\n                        // cause it to transition to the \"Terminated\" state).\n                        // https://tools.ietf.org/html/rfc6026#section-7.1\n                        // As noted in the comment above, we are to leaving it to the transaction\n                        // timers to eventually cause the transaction to sort itself out in the case\n                        // of a transport failure in an invite server transaction. This delegate method\n                        // is here simply here for completeness and to make it clear that it provides\n                        // nothing more than informational hook into the core. That is, if you think\n                        // you should be trying to deal with a transport error here, you are likely wrong.\n                        this.logger.error(\"A transport error has occurred while handling an incoming INVITE request.\");\n                    }\n                };\n                // FIXME: Ported - 100 Trying send should be configurable.\n                // Only required if TU will not respond in 200ms.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                incomingInviteRequest.trying();\n                // The Replaces header contains information used to match an existing\n                // SIP dialog (call-id, to-tag, and from-tag).  Upon receiving an INVITE\n                // with a Replaces header, the User Agent (UA) attempts to match this\n                // information with a confirmed or early dialog.\n                // https://tools.ietf.org/html/rfc3891#section-3\n                if (this.options.sipExtensionReplaces !== SIPExtension.Unsupported) {\n                    const message = incomingInviteRequest.message;\n                    const replaces = message.parseHeader(\"replaces\");\n                    if (replaces) {\n                        const callId = replaces.call_id;\n                        if (typeof callId !== \"string\") {\n                            throw new Error(\"Type of call id is not string\");\n                        }\n                        const toTag = replaces.replaces_to_tag;\n                        if (typeof toTag !== \"string\") {\n                            throw new Error(\"Type of to tag is not string\");\n                        }\n                        const fromTag = replaces.replaces_from_tag;\n                        if (typeof fromTag !== \"string\") {\n                            throw new Error(\"type of from tag is not string\");\n                        }\n                        const targetDialogId = callId + toTag + fromTag;\n                        const targetDialog = this.userAgentCore.dialogs.get(targetDialogId);\n                        // If no match is found, the UAS rejects the INVITE and returns a 481\n                        // Call/Transaction Does Not Exist response.  Likewise, if the Replaces\n                        // header field matches a dialog which was not created with an INVITE,\n                        // the UAS MUST reject the request with a 481 response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog) {\n                            invitation.reject({ statusCode: 481 });\n                            return;\n                        }\n                        // If the Replaces header field matches a confirmed dialog, it checks\n                        // for the presence of the \"early-only\" flag in the Replaces header\n                        // field.  (This flag allows the UAC to prevent a potentially\n                        // undesirable race condition described in Section 7.1.) If the flag is\n                        // present, the UA rejects the request with a 486 Busy response.\n                        // https://tools.ietf.org/html/rfc3891#section-3\n                        if (!targetDialog.early && replaces.early_only === true) {\n                            invitation.reject({ statusCode: 486 });\n                            return;\n                        }\n                        // Provide a handle on the session being replaced.\n                        const targetSession = this._sessions[callId + fromTag] || this._sessions[callId + toTag] || undefined;\n                        if (!targetSession) {\n                            throw new Error(\"Session does not exist.\");\n                        }\n                        invitation._replacee = targetSession;\n                    }\n                }\n                // Delegate invitation handling.\n                if ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) {\n                    if (invitation.autoSendAnInitialProvisionalResponse) {\n                        invitation.progress().then(() => {\n                            var _a;\n                            if (((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onInvite) === undefined) {\n                                throw new Error(\"onInvite undefined.\");\n                            }\n                            this.delegate.onInvite(invitation);\n                        });\n                        return;\n                    }\n                    this.delegate.onInvite(invitation);\n                    return;\n                }\n                // A common scenario occurs when the callee is currently not willing or\n                // able to take additional calls at this end system.  A 486 (Busy Here)\n                // SHOULD be returned in such a scenario.\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n                invitation.reject({ statusCode: 486 });\n            },\n            onMessage: (incomingMessageRequest) => {\n                if (this.delegate && this.delegate.onMessage) {\n                    const message = new Message(incomingMessageRequest);\n                    this.delegate.onMessage(message);\n                }\n                else {\n                    // Accept the MESSAGE request, but do nothing with it.\n                    incomingMessageRequest.accept();\n                }\n            },\n            onNotify: (incomingNotifyRequest) => {\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                if (this.delegate && this.delegate.onNotify) {\n                    const notification = new Notification(incomingNotifyRequest);\n                    this.delegate.onNotify(notification);\n                }\n                else {\n                    // Per the above which obsoletes https://tools.ietf.org/html/rfc3265,\n                    // the use of out of dialog NOTIFY is obsolete, but...\n                    if (this.options.allowLegacyNotifications) {\n                        incomingNotifyRequest.accept(); // Accept the NOTIFY request, but do nothing with it.\n                    }\n                    else {\n                        incomingNotifyRequest.reject({ statusCode: 481 });\n                    }\n                }\n            },\n            onRefer: (incomingReferRequest) => {\n                this.logger.warn(\"Received an out of dialog REFER request\");\n                // TOOD: this.delegate.onRefer(...)\n                if (this.delegate && this.delegate.onReferRequest) {\n                    this.delegate.onReferRequest(incomingReferRequest);\n                }\n                else {\n                    incomingReferRequest.reject({ statusCode: 405 });\n                }\n            },\n            onRegister: (incomingRegisterRequest) => {\n                this.logger.warn(\"Received an out of dialog REGISTER request\");\n                // TOOD: this.delegate.onRegister(...)\n                if (this.delegate && this.delegate.onRegisterRequest) {\n                    this.delegate.onRegisterRequest(incomingRegisterRequest);\n                }\n                else {\n                    incomingRegisterRequest.reject({ statusCode: 405 });\n                }\n            },\n            onSubscribe: (incomingSubscribeRequest) => {\n                this.logger.warn(\"Received an out of dialog SUBSCRIBE request\");\n                // TOOD: this.delegate.onSubscribe(...)\n                if (this.delegate && this.delegate.onSubscribeRequest) {\n                    this.delegate.onSubscribeRequest(incomingSubscribeRequest);\n                }\n                else {\n                    incomingSubscribeRequest.reject({ statusCode: 405 });\n                }\n            }\n        };\n        return new UserAgentCore(userAgentCoreConfiguration, userAgentCoreDelegate);\n    }\n    initTransportCallbacks() {\n        this.transport.onConnect = () => this.onTransportConnect();\n        this.transport.onDisconnect = (error) => this.onTransportDisconnect(error);\n        this.transport.onMessage = (message) => this.onTransportMessage(message);\n    }\n    onTransportConnect() {\n        if (this.state === UserAgentState.Stopped) {\n            return;\n        }\n        if (this.delegate && this.delegate.onConnect) {\n            this.delegate.onConnect();\n        }\n    }\n    onTransportDisconnect(error) {\n        if (this.state === UserAgentState.Stopped) {\n            return;\n        }\n        if (this.delegate && this.delegate.onDisconnect) {\n            this.delegate.onDisconnect(error);\n        }\n        // Only attempt to reconnect if network/server dropped the connection.\n        if (error && this.options.reconnectionAttempts > 0) {\n            this.attemptReconnection();\n        }\n    }\n    onTransportMessage(messageString) {\n        const message = Parser.parseMessage(messageString, this.getLogger(\"sip.Parser\"));\n        if (!message) {\n            this.logger.warn(\"Failed to parse incoming message. Dropping.\");\n            return;\n        }\n        if (this.state === UserAgentState.Stopped && message instanceof IncomingRequestMessage) {\n            this.logger.warn(`Received ${message.method} request while stopped. Dropping.`);\n            return;\n        }\n        // A valid SIP request formulated by a UAC MUST, at a minimum, contain\n        // the following header fields: To, From, CSeq, Call-ID, Max-Forwards,\n        // and Via; all of these header fields are mandatory in all SIP\n        // requests.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1\n        const hasMinimumHeaders = () => {\n            const mandatoryHeaders = [\"from\", \"to\", \"call_id\", \"cseq\", \"via\"];\n            for (const header of mandatoryHeaders) {\n                if (!message.hasHeader(header)) {\n                    this.logger.warn(`Missing mandatory header field : ${header}.`);\n                    return false;\n                }\n            }\n            return true;\n        };\n        // Request Checks\n        if (message instanceof IncomingRequestMessage) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Request missing mandatory header field. Dropping.`);\n                return;\n            }\n            // FIXME: This is non-standard and should be a configurable behavior (desirable regardless).\n            // Custom SIP.js check to reject request from ourself (this instance of SIP.js).\n            // This is port of SanityCheck.rfc3261_16_3_4().\n            if (!message.toTag && message.callId.substr(0, 5) === this.options.sipjsId) {\n                this.userAgentCore.replyStateless(message, { statusCode: 482 });\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_request().\n            const len = utf8Length(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.userAgentCore.replyStateless(message, { statusCode: 400 });\n                return;\n            }\n        }\n        // Response Checks\n        if (message instanceof IncomingResponseMessage) {\n            // This is port of SanityCheck.minimumHeaders().\n            if (!hasMinimumHeaders()) {\n                this.logger.warn(`Response missing mandatory header field. Dropping.`);\n                return;\n            }\n            // Custom SIP.js check to drop responses if multiple Via headers.\n            // This is port of SanityCheck.rfc3261_8_1_3_3().\n            if (message.getHeaders(\"via\").length > 1) {\n                this.logger.warn(\"More than one Via header field present in the response. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to drop responses if bad Via header.\n            // This is port of SanityCheck.rfc3261_18_1_2().\n            if (message.via.host !== this.options.viaHost || message.via.port !== undefined) {\n                this.logger.warn(\"Via sent-by in the response does not match UA Via host value. Dropping.\");\n                return;\n            }\n            // FIXME: This should be Transport check before we get here (Section 18).\n            // Custom SIP.js check to reject requests if body length wrong.\n            // This is port of SanityCheck.rfc3261_18_3_response().\n            const len = utf8Length(message.body);\n            const contentLength = message.getHeader(\"content-length\");\n            if (contentLength && len < Number(contentLength)) {\n                this.logger.warn(\"Message body length is lower than the value in Content-Length header field. Dropping.\");\n                return;\n            }\n        }\n        // Handle Request\n        if (message instanceof IncomingRequestMessage) {\n            this.userAgentCore.receiveIncomingRequestFromTransport(message);\n            return;\n        }\n        // Handle Response\n        if (message instanceof IncomingResponseMessage) {\n            this.userAgentCore.receiveIncomingResponseFromTransport(message);\n            return;\n        }\n        throw new Error(\"Invalid message type.\");\n    }\n    /**\n     * Transition state.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    transitionState(newState, error) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate state transition\n        switch (this._state) {\n            case UserAgentState.Started:\n                if (newState !== UserAgentState.Stopped) {\n                    invalidTransition();\n                }\n                break;\n            case UserAgentState.Stopped:\n                if (newState !== UserAgentState.Started) {\n                    invalidTransition();\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        this.logger.log(`Transitioned from ${this._state} to ${newState}`);\n        this._state = newState;\n        this._stateEventEmitter.emit(this._state);\n    }\n}\n","import { Md5 } from \"./md5.js\";\nimport { createRandomToken } from \"./utils.js\";\nfunction MD5(s) {\n    return Md5.hashStr(s);\n}\n/**\n * Digest Authentication.\n * @internal\n */\nexport class DigestAuthentication {\n    /**\n     * Constructor.\n     * @param loggerFactory - LoggerFactory.\n     * @param username - Username.\n     * @param password - Password.\n     */\n    constructor(loggerFactory, ha1, username, password) {\n        this.logger = loggerFactory.getLogger(\"sipjs.digestauthentication\");\n        this.username = username;\n        this.password = password;\n        this.ha1 = ha1;\n        this.nc = 0;\n        this.ncHex = \"00000000\";\n    }\n    /**\n     * Performs Digest authentication given a SIP request and the challenge\n     * received in a response to that request.\n     * @param request -\n     * @param challenge -\n     * @returns true if credentials were successfully generated, false otherwise.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    authenticate(request, challenge, body) {\n        // Inspect and validate the challenge.\n        this.algorithm = challenge.algorithm;\n        this.realm = challenge.realm;\n        this.nonce = challenge.nonce;\n        this.opaque = challenge.opaque;\n        this.stale = challenge.stale;\n        if (this.algorithm) {\n            if (this.algorithm !== \"MD5\") {\n                this.logger.warn(\"challenge with Digest algorithm different than 'MD5', authentication aborted\");\n                return false;\n            }\n        }\n        else {\n            this.algorithm = \"MD5\";\n        }\n        if (!this.realm) {\n            this.logger.warn(\"challenge without Digest realm, authentication aborted\");\n            return false;\n        }\n        if (!this.nonce) {\n            this.logger.warn(\"challenge without Digest nonce, authentication aborted\");\n            return false;\n        }\n        // 'qop' can contain a list of values (Array). Let's choose just one.\n        if (challenge.qop) {\n            if (challenge.qop.indexOf(\"auth\") > -1) {\n                this.qop = \"auth\";\n            }\n            else if (challenge.qop.indexOf(\"auth-int\") > -1) {\n                this.qop = \"auth-int\";\n            }\n            else {\n                // Otherwise 'qop' is present but does not contain 'auth' or 'auth-int', so abort here.\n                this.logger.warn(\"challenge without Digest qop different than 'auth' or 'auth-int', authentication aborted\");\n                return false;\n            }\n        }\n        else {\n            this.qop = undefined;\n        }\n        // Fill other attributes.\n        this.method = request.method;\n        this.uri = request.ruri;\n        this.cnonce = createRandomToken(12);\n        this.nc += 1;\n        this.updateNcHex();\n        // nc-value = 8LHEX. Max value = 'FFFFFFFF'.\n        if (this.nc === 4294967296) {\n            this.nc = 1;\n            this.ncHex = \"00000001\";\n        }\n        // Calculate the Digest \"response\" value.\n        this.calculateResponse(body);\n        return true;\n    }\n    /**\n     * Return the Proxy-Authorization or WWW-Authorization header value.\n     */\n    toString() {\n        const authParams = [];\n        if (!this.response) {\n            throw new Error(\"response field does not exist, cannot generate Authorization header\");\n        }\n        authParams.push(\"algorithm=\" + this.algorithm);\n        authParams.push('username=\"' + this.username + '\"');\n        authParams.push('realm=\"' + this.realm + '\"');\n        authParams.push('nonce=\"' + this.nonce + '\"');\n        authParams.push('uri=\"' + this.uri + '\"');\n        authParams.push('response=\"' + this.response + '\"');\n        if (this.opaque) {\n            authParams.push('opaque=\"' + this.opaque + '\"');\n        }\n        if (this.qop) {\n            authParams.push(\"qop=\" + this.qop);\n            authParams.push('cnonce=\"' + this.cnonce + '\"');\n            authParams.push(\"nc=\" + this.ncHex);\n        }\n        return \"Digest \" + authParams.join(\", \");\n    }\n    /**\n     * Generate the 'nc' value as required by Digest in this.ncHex by reading this.nc.\n     */\n    updateNcHex() {\n        const hex = Number(this.nc).toString(16);\n        this.ncHex = \"00000000\".substr(0, 8 - hex.length) + hex;\n    }\n    /**\n     * Generate Digest 'response' value.\n     */\n    calculateResponse(body) {\n        let ha1, ha2;\n        // HA1 = MD5(A1) = MD5(username:realm:password)\n        ha1 = this.ha1;\n        if (ha1 === \"\" || ha1 === undefined) {\n            ha1 = MD5(this.username + \":\" + this.realm + \":\" + this.password);\n        }\n        if (this.qop === \"auth\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)`\n            this.response = MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth:\" + ha2);\n        }\n        else if (this.qop === \"auth-int\") {\n            // HA2 = MD5(A2) = MD5(method:digestURI:MD5(entityBody))\n            ha2 = MD5(this.method + \":\" + this.uri + \":\" + MD5(body ? body : \"\"));\n            // response = MD5(HA1:nonce:nonceCount:credentialsNonce:qop:HA2)\n            this.response = MD5(ha1 + \":\" + this.nonce + \":\" + this.ncHex + \":\" + this.cnonce + \":auth-int:\" + ha2);\n        }\n        else if (this.qop === undefined) {\n            // HA2 = MD5(A2) = MD5(method:digestURI)\n            ha2 = MD5(this.method + \":\" + this.uri);\n            // response = MD5(HA1:nonce:HA2)\n            this.response = MD5(ha1 + \":\" + this.nonce + \":\" + ha2);\n        }\n    }\n}\n","/* eslint-disable */\n//\n// Scoped from: https://github.com/cotag/ts-md5\n//\n/*\n\nTypeScript Md5\n==============\n\nBased on work by\n* Joseph Myers: http://www.myersdaily.org/joseph/javascript/md5-text.html\n* André Cruz: https://github.com/satazor/SparkMD5\n* Raymond Hill: https://github.com/gorhill/yamd5.js\n\nEffectively a TypeScrypt re-write of Raymond Hill JS Library\n\nThe MIT License (MIT)\n\nCopyright (C) 2014 Raymond Hill\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in\nall copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\nTHE SOFTWARE.\n\n\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n                    Version 2, December 2004\n\n Copyright (C) 2015 André Cruz <amdfcruz@gmail.com>\n\n Everyone is permitted to copy and distribute verbatim or modified\n copies of this license document, and changing it is allowed as long\n as the name is changed.\n\n            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE\n   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION\n\n  0. You just DO WHAT THE FUCK YOU WANT TO.\n\n\n*/\nexport class Md5 {\n    constructor() {\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state = new Int32Array(4);\n        this._buffer = new ArrayBuffer(68);\n        this._buffer8 = new Uint8Array(this._buffer, 0, 68);\n        this._buffer32 = new Uint32Array(this._buffer, 0, 17);\n        this.start();\n    }\n    static hashStr(str, raw = false) {\n        return this.onePassHasher\n            .start()\n            .appendStr(str)\n            .end(raw);\n    }\n    static hashAsciiStr(str, raw = false) {\n        return this.onePassHasher\n            .start()\n            .appendAsciiStr(str)\n            .end(raw);\n    }\n    static _hex(x) {\n        const hc = Md5.hexChars;\n        const ho = Md5.hexOut;\n        let n;\n        let offset;\n        let j;\n        let i;\n        for (i = 0; i < 4; i += 1) {\n            offset = i * 8;\n            n = x[i];\n            for (j = 0; j < 8; j += 2) {\n                ho[offset + 1 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n                ho[offset + 0 + j] = hc.charAt(n & 0x0F);\n                n >>>= 4;\n            }\n        }\n        return ho.join('');\n    }\n    static _md5cycle(x, k) {\n        let a = x[0];\n        let b = x[1];\n        let c = x[2];\n        let d = x[3];\n        // ff()\n        a += (b & c | ~b & d) + k[0] - 680876936 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[1] - 389564586 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[2] + 606105819 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[3] - 1044525330 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[4] - 176418897 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[5] + 1200080426 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[6] - 1473231341 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[7] - 45705983 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[8] + 1770035416 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[9] - 1958414417 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[10] - 42063 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[11] - 1990404162 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        a += (b & c | ~b & d) + k[12] + 1804603682 | 0;\n        a = (a << 7 | a >>> 25) + b | 0;\n        d += (a & b | ~a & c) + k[13] - 40341101 | 0;\n        d = (d << 12 | d >>> 20) + a | 0;\n        c += (d & a | ~d & b) + k[14] - 1502002290 | 0;\n        c = (c << 17 | c >>> 15) + d | 0;\n        b += (c & d | ~c & a) + k[15] + 1236535329 | 0;\n        b = (b << 22 | b >>> 10) + c | 0;\n        // gg()\n        a += (b & d | c & ~d) + k[1] - 165796510 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[6] - 1069501632 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[11] + 643717713 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[0] - 373897302 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[5] - 701558691 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[10] + 38016083 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[15] - 660478335 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[4] - 405537848 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[9] + 568446438 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[14] - 1019803690 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[3] - 187363961 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[8] + 1163531501 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        a += (b & d | c & ~d) + k[13] - 1444681467 | 0;\n        a = (a << 5 | a >>> 27) + b | 0;\n        d += (a & c | b & ~c) + k[2] - 51403784 | 0;\n        d = (d << 9 | d >>> 23) + a | 0;\n        c += (d & b | a & ~b) + k[7] + 1735328473 | 0;\n        c = (c << 14 | c >>> 18) + d | 0;\n        b += (c & a | d & ~a) + k[12] - 1926607734 | 0;\n        b = (b << 20 | b >>> 12) + c | 0;\n        // hh()\n        a += (b ^ c ^ d) + k[5] - 378558 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[8] - 2022574463 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[11] + 1839030562 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[14] - 35309556 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[1] - 1530992060 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[4] + 1272893353 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[7] - 155497632 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[10] - 1094730640 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[13] + 681279174 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[0] - 358537222 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[3] - 722521979 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[6] + 76029189 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        a += (b ^ c ^ d) + k[9] - 640364487 | 0;\n        a = (a << 4 | a >>> 28) + b | 0;\n        d += (a ^ b ^ c) + k[12] - 421815835 | 0;\n        d = (d << 11 | d >>> 21) + a | 0;\n        c += (d ^ a ^ b) + k[15] + 530742520 | 0;\n        c = (c << 16 | c >>> 16) + d | 0;\n        b += (c ^ d ^ a) + k[2] - 995338651 | 0;\n        b = (b << 23 | b >>> 9) + c | 0;\n        // ii()\n        a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;\n        a = (a << 6 | a >>> 26) + b | 0;\n        d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;\n        d = (d << 10 | d >>> 22) + a | 0;\n        c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;\n        c = (c << 15 | c >>> 17) + d | 0;\n        b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;\n        b = (b << 21 | b >>> 11) + c | 0;\n        x[0] = a + x[0] | 0;\n        x[1] = b + x[1] | 0;\n        x[2] = c + x[2] | 0;\n        x[3] = d + x[3] | 0;\n    }\n    start() {\n        this._dataLength = 0;\n        this._bufferLength = 0;\n        this._state.set(Md5.stateIdentity);\n        return this;\n    }\n    // Char to code point to to array conversion:\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt\n    // #Example.3A_Fixing_charCodeAt_to_handle_non-Basic-Multilingual-Plane_characters_if_their_presence_earlier_in_the_string_is_unknown\n    appendStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let code;\n        let i;\n        for (i = 0; i < str.length; i += 1) {\n            code = str.charCodeAt(i);\n            if (code < 128) {\n                buf8[bufLen++] = code;\n            }\n            else if (code < 0x800) {\n                buf8[bufLen++] = (code >>> 6) + 0xC0;\n                buf8[bufLen++] = code & 0x3F | 0x80;\n            }\n            else if (code < 0xD800 || code > 0xDBFF) {\n                buf8[bufLen++] = (code >>> 12) + 0xE0;\n                buf8[bufLen++] = (code >>> 6 & 0x3F) | 0x80;\n                buf8[bufLen++] = (code & 0x3F) | 0x80;\n            }\n            else {\n                code = ((code - 0xD800) * 0x400) + (str.charCodeAt(++i) - 0xDC00) + 0x10000;\n                if (code > 0x10FFFF) {\n                    throw new Error('Unicode standard supports code points up to U+10FFFF');\n                }\n                buf8[bufLen++] = (code >>> 18) + 0xF0;\n                buf8[bufLen++] = (code >>> 12 & 0x3F) | 0x80;\n                buf8[bufLen++] = (code >>> 6 & 0x3F) | 0x80;\n                buf8[bufLen++] = (code & 0x3F) | 0x80;\n            }\n            if (bufLen >= 64) {\n                this._dataLength += 64;\n                Md5._md5cycle(this._state, buf32);\n                bufLen -= 64;\n                buf32[0] = buf32[16];\n            }\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendAsciiStr(str) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for (;;) {\n            i = Math.min(str.length - j, 64 - bufLen);\n            while (i--) {\n                buf8[bufLen++] = str.charCodeAt(j++);\n            }\n            if (bufLen < 64) {\n                break;\n            }\n            this._dataLength += 64;\n            Md5._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    appendByteArray(input) {\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        let bufLen = this._bufferLength;\n        let i;\n        let j = 0;\n        for (;;) {\n            i = Math.min(input.length - j, 64 - bufLen);\n            while (i--) {\n                buf8[bufLen++] = input[j++];\n            }\n            if (bufLen < 64) {\n                break;\n            }\n            this._dataLength += 64;\n            Md5._md5cycle(this._state, buf32);\n            bufLen = 0;\n        }\n        this._bufferLength = bufLen;\n        return this;\n    }\n    getState() {\n        const self = this;\n        const s = self._state;\n        return {\n            buffer: String.fromCharCode.apply(null, self._buffer8),\n            buflen: self._bufferLength,\n            length: self._dataLength,\n            state: [s[0], s[1], s[2], s[3]]\n        };\n    }\n    setState(state) {\n        const buf = state.buffer;\n        const x = state.state;\n        const s = this._state;\n        let i;\n        this._dataLength = state.length;\n        this._bufferLength = state.buflen;\n        s[0] = x[0];\n        s[1] = x[1];\n        s[2] = x[2];\n        s[3] = x[3];\n        for (i = 0; i < buf.length; i += 1) {\n            this._buffer8[i] = buf.charCodeAt(i);\n        }\n    }\n    end(raw = false) {\n        const bufLen = this._bufferLength;\n        const buf8 = this._buffer8;\n        const buf32 = this._buffer32;\n        const i = (bufLen >> 2) + 1;\n        let dataBitsLen;\n        this._dataLength += bufLen;\n        buf8[bufLen] = 0x80;\n        buf8[bufLen + 1] = buf8[bufLen + 2] = buf8[bufLen + 3] = 0;\n        buf32.set(Md5.buffer32Identity.subarray(i), i);\n        if (bufLen > 55) {\n            Md5._md5cycle(this._state, buf32);\n            buf32.set(Md5.buffer32Identity);\n        }\n        // Do the final computation based on the tail and length\n        // Beware that the final length may not fit in 32 bits so we take care of that\n        dataBitsLen = this._dataLength * 8;\n        if (dataBitsLen <= 0xFFFFFFFF) {\n            buf32[14] = dataBitsLen;\n        }\n        else {\n            const matches = dataBitsLen.toString(16).match(/(.*?)(.{0,8})$/);\n            if (matches === null) {\n                return;\n            }\n            const lo = parseInt(matches[2], 16);\n            const hi = parseInt(matches[1], 16) || 0;\n            buf32[14] = lo;\n            buf32[15] = hi;\n        }\n        Md5._md5cycle(this._state, buf32);\n        return raw ? this._state : Md5._hex(this._state);\n    }\n}\n// Private Static Variables\nMd5.stateIdentity = new Int32Array([1732584193, -271733879, -1732584194, 271733878]);\nMd5.buffer32Identity = new Int32Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);\nMd5.hexChars = '0123456789abcdef';\nMd5.hexOut = [];\n// Permanent instance is to use for one-call hashing\nMd5.onePassHasher = new Md5();\nif (Md5.hashStr('hello') !== '5d41402abc4b2a76b9719d911017c592') {\n    console.error('Md5 self test failed.');\n}\n","import { Levels } from \"./levels.js\";\nimport { Logger } from \"./logger.js\";\n/**\n * Logger.\n * @public\n */\nexport class LoggerFactory {\n    constructor() {\n        this.builtinEnabled = true;\n        this._level = Levels.log;\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        this.loggers = {};\n        this.logger = this.getLogger(\"sip:loggerfactory\");\n    }\n    get level() {\n        return this._level;\n    }\n    set level(newLevel) {\n        if (newLevel >= 0 && newLevel <= 3) {\n            this._level = newLevel;\n        }\n        else if (newLevel > 3) {\n            this._level = 3;\n            // eslint-disable-next-line no-prototype-builtins\n        }\n        else if (Levels.hasOwnProperty(newLevel)) {\n            this._level = newLevel;\n        }\n        else {\n            this.logger.error(\"invalid 'level' parameter value: \" + JSON.stringify(newLevel));\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    get connector() {\n        return this._connector;\n    }\n    set connector(value) {\n        if (!value) {\n            this._connector = undefined;\n        }\n        else if (typeof value === \"function\") {\n            this._connector = value;\n        }\n        else {\n            this.logger.error(\"invalid 'connector' parameter value: \" + JSON.stringify(value));\n        }\n    }\n    getLogger(category, label) {\n        if (label && this.level === 3) {\n            return new Logger(this, category, label);\n        }\n        else if (this.loggers[category]) {\n            return this.loggers[category];\n        }\n        else {\n            const logger = new Logger(this, category);\n            this.loggers[category] = logger;\n            return logger;\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    genericLog(levelToLog, category, label, content) {\n        if (this.level >= levelToLog) {\n            if (this.builtinEnabled) {\n                this.print(levelToLog, category, label, content);\n            }\n        }\n        if (this.connector) {\n            this.connector(Levels[levelToLog], category, label, content);\n        }\n    }\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    print(levelToLog, category, label, content) {\n        if (typeof content === \"string\") {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const prefix = [new Date(), category];\n            if (label) {\n                prefix.push(label);\n            }\n            content = prefix.concat(content).join(\" | \");\n        }\n        switch (levelToLog) {\n            case Levels.error:\n                // eslint-disable-next-line no-console\n                console.error(content);\n                break;\n            case Levels.warn:\n                // eslint-disable-next-line no-console\n                console.warn(content);\n                break;\n            case Levels.log:\n                // eslint-disable-next-line no-console\n                console.log(content);\n                break;\n            case Levels.debug:\n                // eslint-disable-next-line no-console\n                console.debug(content);\n                break;\n            default:\n                break;\n        }\n    }\n}\n","import { Levels } from \"./levels.js\";\n/**\n * Logger.\n * @public\n */\nexport class Logger {\n    constructor(logger, category, label) {\n        this.logger = logger;\n        this.category = category;\n        this.label = label;\n    }\n    error(content) {\n        this.genericLog(Levels.error, content);\n    }\n    warn(content) {\n        this.genericLog(Levels.warn, content);\n    }\n    log(content) {\n        this.genericLog(Levels.log, content);\n    }\n    debug(content) {\n        this.genericLog(Levels.debug, content);\n    }\n    genericLog(level, content) {\n        this.logger.genericLog(level, this.category, this.label, content);\n    }\n    get level() {\n        return this.logger.level;\n    }\n    set level(newLevel) {\n        this.logger.level = newLevel;\n    }\n}\n","/* eslint-disable no-inner-declarations */\n/* eslint-disable @typescript-eslint/no-namespace */\nimport { Grammar } from \"../../grammar/grammar.js\";\nimport { IncomingRequestMessage } from \"./incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"./incoming-response-message.js\";\n/**\n * Extract and parse every header of a SIP message.\n * @internal\n */\nexport var Parser;\n(function (Parser) {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    function getHeader(data, headerStart) {\n        // 'start' position of the header.\n        let start = headerStart;\n        // 'end' position of the header.\n        let end = 0;\n        // 'partial end' position of the header.\n        let partialEnd = 0;\n        // End of message.\n        if (data.substring(start, start + 2).match(/(^\\r\\n)/)) {\n            return -2;\n        }\n        while (end === 0) {\n            // Partial End of Header.\n            partialEnd = data.indexOf(\"\\r\\n\", start);\n            // 'indexOf' returns -1 if the value to be found never occurs.\n            if (partialEnd === -1) {\n                return partialEnd;\n            }\n            if (!data.substring(partialEnd + 2, partialEnd + 4).match(/(^\\r\\n)/) &&\n                data.charAt(partialEnd + 2).match(/(^\\s+)/)) {\n                // Not the end of the message. Continue from the next position.\n                start = partialEnd + 2;\n            }\n            else {\n                end = partialEnd;\n            }\n        }\n        return end;\n    }\n    Parser.getHeader = getHeader;\n    function parseHeader(message, \n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    data, headerStart, headerEnd) {\n        const hcolonIndex = data.indexOf(\":\", headerStart);\n        const headerName = data.substring(headerStart, hcolonIndex).trim();\n        const headerValue = data.substring(hcolonIndex + 1, headerEnd).trim();\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let parsed;\n        // If header-field is well-known, parse it.\n        switch (headerName.toLowerCase()) {\n            case \"via\":\n            case \"v\":\n                message.addHeader(\"via\", headerValue);\n                if (message.getHeaders(\"via\").length === 1) {\n                    parsed = message.parseHeader(\"Via\");\n                    if (parsed) {\n                        message.via = parsed;\n                        message.viaBranch = parsed.branch;\n                    }\n                }\n                else {\n                    parsed = 0;\n                }\n                break;\n            case \"from\":\n            case \"f\":\n                message.setHeader(\"from\", headerValue);\n                parsed = message.parseHeader(\"from\");\n                if (parsed) {\n                    message.from = parsed;\n                    message.fromTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"to\":\n            case \"t\":\n                message.setHeader(\"to\", headerValue);\n                parsed = message.parseHeader(\"to\");\n                if (parsed) {\n                    message.to = parsed;\n                    message.toTag = parsed.getParam(\"tag\");\n                }\n                break;\n            case \"record-route\":\n                parsed = Grammar.parse(headerValue, \"Record_Route\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header) => {\n                    message.addHeader(\"record-route\", headerValue.substring(header.position, header.offset));\n                    message.headers[\"Record-Route\"][message.getHeaders(\"record-route\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"call-id\":\n            case \"i\":\n                message.setHeader(\"call-id\", headerValue);\n                parsed = message.parseHeader(\"call-id\");\n                if (parsed) {\n                    message.callId = headerValue;\n                }\n                break;\n            case \"contact\":\n            case \"m\":\n                parsed = Grammar.parse(headerValue, \"Contact\");\n                if (parsed === -1) {\n                    parsed = undefined;\n                    break;\n                }\n                if (!(parsed instanceof Array)) {\n                    parsed = undefined;\n                    break;\n                }\n                parsed.forEach((header) => {\n                    message.addHeader(\"contact\", headerValue.substring(header.position, header.offset));\n                    message.headers.Contact[message.getHeaders(\"contact\").length - 1].parsed = header.parsed;\n                });\n                break;\n            case \"content-length\":\n            case \"l\":\n                message.setHeader(\"content-length\", headerValue);\n                parsed = message.parseHeader(\"content-length\");\n                break;\n            case \"content-type\":\n            case \"c\":\n                message.setHeader(\"content-type\", headerValue);\n                parsed = message.parseHeader(\"content-type\");\n                break;\n            case \"cseq\":\n                message.setHeader(\"cseq\", headerValue);\n                parsed = message.parseHeader(\"cseq\");\n                if (parsed) {\n                    message.cseq = parsed.value;\n                }\n                if (message instanceof IncomingResponseMessage) {\n                    message.method = parsed.method;\n                }\n                break;\n            case \"max-forwards\":\n                message.setHeader(\"max-forwards\", headerValue);\n                parsed = message.parseHeader(\"max-forwards\");\n                break;\n            case \"www-authenticate\":\n                message.setHeader(\"www-authenticate\", headerValue);\n                parsed = message.parseHeader(\"www-authenticate\");\n                break;\n            case \"proxy-authenticate\":\n                message.setHeader(\"proxy-authenticate\", headerValue);\n                parsed = message.parseHeader(\"proxy-authenticate\");\n                break;\n            case \"refer-to\":\n            case \"r\":\n                message.setHeader(\"refer-to\", headerValue);\n                parsed = message.parseHeader(\"refer-to\");\n                if (parsed) {\n                    message.referTo = parsed;\n                }\n                break;\n            default:\n                // Do not parse this header.\n                message.addHeader(headerName.toLowerCase(), headerValue);\n                parsed = 0;\n        }\n        if (parsed === undefined) {\n            return {\n                error: \"error parsing header '\" + headerName + \"'\"\n            };\n        }\n        else {\n            return true;\n        }\n    }\n    Parser.parseHeader = parseHeader;\n    function parseMessage(data, logger) {\n        let headerStart = 0;\n        let headerEnd = data.indexOf(\"\\r\\n\");\n        if (headerEnd === -1) {\n            logger.warn(\"no CRLF found, not a SIP message, discarded\");\n            return;\n        }\n        // Parse first line. Check if it is a Request or a Reply.\n        const firstLine = data.substring(0, headerEnd);\n        const parsed = Grammar.parse(firstLine, \"Request_Response\");\n        let message;\n        if (parsed === -1) {\n            logger.warn('error parsing first line of SIP message: \"' + firstLine + '\"');\n            return;\n        }\n        else if (!parsed.status_code) {\n            message = new IncomingRequestMessage();\n            message.method = parsed.method;\n            message.ruri = parsed.uri;\n        }\n        else {\n            message = new IncomingResponseMessage();\n            message.statusCode = parsed.status_code;\n            message.reasonPhrase = parsed.reason_phrase;\n        }\n        message.data = data;\n        headerStart = headerEnd + 2;\n        // Loop over every line in data. Detect the end of each header and parse\n        // it or simply add to the headers collection.\n        let bodyStart;\n        // eslint-disable-next-line no-constant-condition\n        while (true) {\n            headerEnd = getHeader(data, headerStart);\n            // The SIP message has normally finished.\n            if (headerEnd === -2) {\n                bodyStart = headerStart + 2;\n                break;\n            }\n            else if (headerEnd === -1) {\n                // data.indexOf returned -1 due to a malformed message.\n                logger.error(\"malformed message\");\n                return;\n            }\n            const parsedHeader = parseHeader(message, data, headerStart, headerEnd);\n            if (parsedHeader && parsedHeader !== true) {\n                logger.error(parsedHeader.error);\n                return;\n            }\n            headerStart = headerEnd + 2;\n        }\n        // RFC3261 18.3.\n        // If there are additional bytes in the transport packet\n        // beyond the end of the body, they MUST be discarded.\n        if (message.hasHeader(\"content-length\")) {\n            message.body = data.substr(bodyStart, Number(message.getHeader(\"content-length\")));\n        }\n        else {\n            message.body = data.substring(bodyStart);\n        }\n        return message;\n    }\n    Parser.parseMessage = parseMessage;\n})(Parser = Parser || (Parser = {}));\n","import { C } from \"../messages/methods/constants.js\";\nimport { OutgoingRequestMessage } from \"../messages/outgoing-request-message.js\";\nimport { constructOutgoingResponse } from \"../messages/outgoing-response.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\nimport { InviteUserAgentClient } from \"../user-agents/invite-user-agent-client.js\";\nimport { InviteUserAgentServer } from \"../user-agents/invite-user-agent-server.js\";\nimport { MessageUserAgentClient } from \"../user-agents/message-user-agent-client.js\";\nimport { MessageUserAgentServer } from \"../user-agents/message-user-agent-server.js\";\nimport { NotifyUserAgentServer } from \"../user-agents/notify-user-agent-server.js\";\nimport { PublishUserAgentClient } from \"../user-agents/publish-user-agent-client.js\";\nimport { ReferUserAgentServer } from \"../user-agents/refer-user-agent-server.js\";\nimport { RegisterUserAgentClient } from \"../user-agents/register-user-agent-client.js\";\nimport { RegisterUserAgentServer } from \"../user-agents/register-user-agent-server.js\";\nimport { SubscribeUserAgentClient } from \"../user-agents/subscribe-user-agent-client.js\";\nimport { SubscribeUserAgentServer } from \"../user-agents/subscribe-user-agent-server.js\";\nimport { UserAgentClient } from \"../user-agents/user-agent-client.js\";\nimport { AllowedMethods } from \"./allowed-methods.js\";\n/**\n * This is ported from UA.C.ACCEPTED_BODY_TYPES.\n * FIXME: TODO: Should be configurable/variable.\n */\nconst acceptedBodyTypes = [\"application/sdp\", \"application/dtmf-relay\"];\n/**\n * User Agent Core.\n * @remarks\n * Core designates the functions specific to a particular type\n * of SIP entity, i.e., specific to either a stateful or stateless\n * proxy, a user agent or registrar.  All cores, except those for\n * the stateless proxy, are transaction users.\n * https://tools.ietf.org/html/rfc3261#section-6\n *\n * UAC Core: The set of processing functions required of a UAC that\n * reside above the transaction and transport layers.\n * https://tools.ietf.org/html/rfc3261#section-6\n *\n * UAS Core: The set of processing functions required at a UAS that\n * resides above the transaction and transport layers.\n * https://tools.ietf.org/html/rfc3261#section-6\n * @public\n */\nexport class UserAgentCore {\n    /**\n     * Constructor.\n     * @param configuration - Configuration.\n     * @param delegate - Delegate.\n     */\n    constructor(configuration, delegate = {}) {\n        /** UACs. */\n        this.userAgentClients = new Map();\n        /** UASs. */\n        this.userAgentServers = new Map();\n        this.configuration = configuration;\n        this.delegate = delegate;\n        this.dialogs = new Map();\n        this.subscribers = new Map();\n        this.logger = configuration.loggerFactory.getLogger(\"sip.user-agent-core\");\n    }\n    /** Destructor. */\n    dispose() {\n        this.reset();\n    }\n    /** Reset. */\n    reset() {\n        this.dialogs.forEach((dialog) => dialog.dispose());\n        this.dialogs.clear();\n        this.subscribers.forEach((subscriber) => subscriber.dispose());\n        this.subscribers.clear();\n        this.userAgentClients.forEach((uac) => uac.dispose());\n        this.userAgentClients.clear();\n        this.userAgentServers.forEach((uac) => uac.dispose());\n        this.userAgentServers.clear();\n    }\n    /** Logger factory. */\n    get loggerFactory() {\n        return this.configuration.loggerFactory;\n    }\n    /** Transport. */\n    get transport() {\n        const transport = this.configuration.transportAccessor();\n        if (!transport) {\n            throw new Error(\"Transport undefined.\");\n        }\n        return transport;\n    }\n    /**\n     * Send INVITE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    invite(request, delegate) {\n        return new InviteUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send MESSAGE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    message(request, delegate) {\n        return new MessageUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send PUBLISH.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    publish(request, delegate) {\n        return new PublishUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send REGISTER.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    register(request, delegate) {\n        return new RegisterUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send SUBSCRIBE.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    subscribe(request, delegate) {\n        return new SubscribeUserAgentClient(this, request, delegate);\n    }\n    /**\n     * Send a request.\n     * @param request - Outgoing request.\n     * @param delegate - Request delegate.\n     */\n    request(request, delegate) {\n        return new UserAgentClient(NonInviteClientTransaction, this, request, delegate);\n    }\n    /**\n     * Outgoing request message factory function.\n     * @param method - Method.\n     * @param requestURI - Request-URI.\n     * @param fromURI - From URI.\n     * @param toURI - To URI.\n     * @param options - Request options.\n     * @param extraHeaders - Extra headers to add.\n     * @param body - Message body.\n     */\n    makeOutgoingRequestMessage(method, requestURI, fromURI, toURI, options, extraHeaders, body) {\n        // default values from user agent configuration\n        const callIdPrefix = this.configuration.sipjsId;\n        const fromDisplayName = this.configuration.displayName;\n        const forceRport = this.configuration.viaForceRport;\n        const hackViaTcp = this.configuration.hackViaTcp;\n        const optionTags = this.configuration.supportedOptionTags.slice();\n        if (method === C.REGISTER) {\n            optionTags.push(\"path\", \"gruu\");\n        }\n        if (method === C.INVITE && (this.configuration.contact.pubGruu || this.configuration.contact.tempGruu)) {\n            optionTags.push(\"gruu\");\n        }\n        const routeSet = this.configuration.routeSet;\n        const userAgentString = this.configuration.userAgentHeaderFieldValue;\n        const viaHost = this.configuration.viaHost;\n        const defaultOptions = {\n            callIdPrefix,\n            forceRport,\n            fromDisplayName,\n            hackViaTcp,\n            optionTags,\n            routeSet,\n            userAgentString,\n            viaHost\n        };\n        // merge provided options with default options\n        const requestOptions = Object.assign(Object.assign({}, defaultOptions), options);\n        return new OutgoingRequestMessage(method, requestURI, fromURI, toURI, requestOptions, extraHeaders, body);\n    }\n    /**\n     * Handle an incoming request message from the transport.\n     * @param message - Incoming request message from transport layer.\n     */\n    receiveIncomingRequestFromTransport(message) {\n        this.receiveRequestFromTransport(message);\n    }\n    /**\n     * Handle an incoming response message from the transport.\n     * @param message - Incoming response message from transport layer.\n     */\n    receiveIncomingResponseFromTransport(message) {\n        this.receiveResponseFromTransport(message);\n    }\n    /**\n     * A stateless UAS is a UAS that does not maintain transaction state.\n     * It replies to requests normally, but discards any state that would\n     * ordinarily be retained by a UAS after a response has been sent.  If a\n     * stateless UAS receives a retransmission of a request, it regenerates\n     * the response and re-sends it, just as if it were replying to the first\n     * instance of the request. A UAS cannot be stateless unless the request\n     * processing for that method would always result in the same response\n     * if the requests are identical. This rules out stateless registrars,\n     * for example.  Stateless UASs do not use a transaction layer; they\n     * receive requests directly from the transport layer and send responses\n     * directly to the transport layer.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.7\n     * @param message - Incoming request message to reply to.\n     * @param statusCode - Status code to reply with.\n     */\n    replyStateless(message, options) {\n        const userAgent = this.configuration.userAgentHeaderFieldValue;\n        const supported = this.configuration.supportedOptionTagsResponse;\n        options = Object.assign(Object.assign({}, options), { userAgent, supported });\n        const response = constructOutgoingResponse(message, options);\n        this.transport.send(response.message).catch((error) => {\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful...\n            if (error instanceof Error) {\n                this.logger.error(error.message);\n            }\n            this.logger.error(`Transport error occurred sending stateless reply to ${message.method} request.`);\n            // TODO: Currently there is no hook to provide notification that a transport error occurred\n            // and throwing would result in an uncaught error (in promise), so we silently eat the error.\n            // Furthermore, silently eating stateless reply transport errors is arguably what we want to do here.\n        });\n        return response;\n    }\n    /**\n     * In Section 18.2.1, replace the last paragraph with:\n     *\n     * Next, the server transport attempts to match the request to a\n     * server transaction.  It does so using the matching rules described\n     * in Section 17.2.3.  If a matching server transaction is found, the\n     * request is passed to that transaction for processing.  If no match\n     * is found, the request is passed to the core, which may decide to\n     * construct a new server transaction for that request.\n     * https://tools.ietf.org/html/rfc6026#section-8.10\n     * @param message - Incoming request message from transport layer.\n     */\n    receiveRequestFromTransport(message) {\n        // When a request is received from the network by the server, it has to\n        // be matched to an existing transaction.  This is accomplished in the\n        // following manner.\n        //\n        // The branch parameter in the topmost Via header field of the request\n        // is examined.  If it is present and begins with the magic cookie\n        // \"z9hG4bK\", the request was generated by a client transaction\n        // compliant to this specification.  Therefore, the branch parameter\n        // will be unique across all transactions sent by that client.  The\n        // request matches a transaction if:\n        //\n        //    1. the branch parameter in the request is equal to the one in the\n        //       top Via header field of the request that created the\n        //       transaction, and\n        //\n        //    2. the sent-by value in the top Via of the request is equal to the\n        //       one in the request that created the transaction, and\n        //\n        //    3. the method of the request matches the one that created the\n        //       transaction, except for ACK, where the method of the request\n        //       that created the transaction is INVITE.\n        //\n        // This matching rule applies to both INVITE and non-INVITE transactions\n        // alike.\n        //\n        //    The sent-by value is used as part of the matching process because\n        //    there could be accidental or malicious duplication of branch\n        //    parameters from different clients.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.3\n        const transactionId = message.viaBranch; // FIXME: Currently only using rule 1...\n        const uas = this.userAgentServers.get(transactionId);\n        // When receiving an ACK that matches an existing INVITE server\n        // transaction and that does not contain a branch parameter containing\n        // the magic cookie defined in RFC 3261, the matching transaction MUST\n        // be checked to see if it is in the \"Accepted\" state.  If it is, then\n        // the ACK must be passed directly to the transaction user instead of\n        // being absorbed by the transaction state machine.  This is necessary\n        // as requests from RFC 2543 clients will not include a unique branch\n        // parameter, and the mechanisms for calculating the transaction ID from\n        // such a request will be the same for both INVITE and ACKs.\n        // https://tools.ietf.org/html/rfc6026#section-6\n        // Any ACKs received from the network while in the \"Accepted\" state MUST be\n        // passed directly to the TU and not absorbed.\n        // https://tools.ietf.org/html/rfc6026#section-7.1\n        if (message.method === C.ACK) {\n            if (uas && uas.transaction.state === TransactionState.Accepted) {\n                if (uas instanceof InviteUserAgentServer) {\n                    // These are ACKs matching an INVITE server transaction.\n                    // These should never happen with RFC 3261 compliant user agents\n                    // (would be a broken ACK to negative final response or something)\n                    // but is apparently how RFC 2543 user agents do things.\n                    // We are not currently supporting this case.\n                    // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n                    this.logger.warn(`Discarding out of dialog ACK after 2xx response sent on transaction ${transactionId}.`);\n                    return;\n                }\n            }\n        }\n        // The CANCEL method requests that the TU at the server side cancel a\n        // pending transaction.  The TU determines the transaction to be\n        // cancelled by taking the CANCEL request, and then assuming that the\n        // request method is anything but CANCEL or ACK and applying the\n        // transaction matching procedures of Section 17.2.3.  The matching\n        // transaction is the one to be cancelled.\n        // https://tools.ietf.org/html/rfc3261#section-9.2\n        if (message.method === C.CANCEL) {\n            if (uas) {\n                // Regardless of the method of the original request, as long as the\n                // CANCEL matched an existing transaction, the UAS answers the CANCEL\n                // request itself with a 200 (OK) response.\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                this.replyStateless(message, { statusCode: 200 });\n                // If the transaction for the original request still exists, the behavior\n                // of the UAS on receiving a CANCEL request depends on whether it has already\n                // sent a final response for the original request. If it has, the CANCEL\n                // request has no effect on the processing of the original request, no\n                // effect on any session state, and no effect on the responses generated\n                // for the original request. If the UAS has not issued a final response\n                // for the original request, its behavior depends on the method of the\n                // original request. If the original request was an INVITE, the UAS\n                // SHOULD immediately respond to the INVITE with a 487 (Request\n                // Terminated).\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                if (uas.transaction instanceof InviteServerTransaction &&\n                    uas.transaction.state === TransactionState.Proceeding) {\n                    if (uas instanceof InviteUserAgentServer) {\n                        uas.receiveCancel(message);\n                    }\n                    // A CANCEL request has no impact on the processing of\n                    // transactions with any other method defined in this specification.\n                    // https://tools.ietf.org/html/rfc3261#section-9.2\n                }\n            }\n            else {\n                // If the UAS did not find a matching transaction for the CANCEL\n                // according to the procedure above, it SHOULD respond to the CANCEL\n                // with a 481 (Call Leg/Transaction Does Not Exist).\n                // https://tools.ietf.org/html/rfc3261#section-9.2\n                this.replyStateless(message, { statusCode: 481 });\n            }\n            return;\n        }\n        // If a matching server transaction is found, the request is passed to that\n        // transaction for processing.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        if (uas) {\n            uas.transaction.receiveRequest(message);\n            return;\n        }\n        // If no match is found, the request is passed to the core, which may decide to\n        // construct a new server transaction for that request.\n        // https://tools.ietf.org/html/rfc6026#section-8.10\n        this.receiveRequest(message);\n        return;\n    }\n    /**\n     * UAC and UAS procedures depend strongly on two factors.  First, based\n     * on whether the request or response is inside or outside of a dialog,\n     * and second, based on the method of a request.  Dialogs are discussed\n     * thoroughly in Section 12; they represent a peer-to-peer relationship\n     * between user agents and are established by specific SIP methods, such\n     * as INVITE.\n     * @param message - Incoming request message.\n     */\n    receiveRequest(message) {\n        // 8.2 UAS Behavior\n        // UASs SHOULD process the requests in the order of the steps that\n        // follow in this section (that is, starting with authentication, then\n        // inspecting the method, the header fields, and so on throughout the\n        // remainder of this section).\n        // https://tools.ietf.org/html/rfc3261#section-8.2\n        // 8.2.1 Method Inspection\n        // Once a request is authenticated (or authentication is skipped), the\n        // UAS MUST inspect the method of the request.  If the UAS recognizes\n        // but does not support the method of a request, it MUST generate a 405\n        // (Method Not Allowed) response.  Procedures for generating responses\n        // are described in Section 8.2.6.  The UAS MUST also add an Allow\n        // header field to the 405 (Method Not Allowed) response.  The Allow\n        // header field MUST list the set of methods supported by the UAS\n        // generating the message.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.1\n        if (!AllowedMethods.includes(message.method)) {\n            const allowHeader = \"Allow: \" + AllowedMethods.toString();\n            this.replyStateless(message, {\n                statusCode: 405,\n                extraHeaders: [allowHeader]\n            });\n            return;\n        }\n        // 8.2.2 Header Inspection\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2\n        if (!message.ruri) {\n            // FIXME: A request message should always have an ruri\n            throw new Error(\"Request-URI undefined.\");\n        }\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI uses a scheme not supported by the UAS, it SHOULD\n        // reject the request with a 416 (Unsupported URI Scheme) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.ruri.scheme !== \"sip\") {\n            this.replyStateless(message, { statusCode: 416 });\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // If the Request-URI does not identify an address that the\n        // UAS is willing to accept requests for, it SHOULD reject\n        // the request with a 404 (Not Found) response.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        const ruri = message.ruri;\n        const ruriMatches = (uri) => {\n            return !!uri && uri.user === ruri.user;\n        };\n        if (!ruriMatches(this.configuration.aor) &&\n            !(ruriMatches(this.configuration.contact.uri) ||\n                ruriMatches(this.configuration.contact.pubGruu) ||\n                ruriMatches(this.configuration.contact.tempGruu))) {\n            this.logger.warn(\"Request-URI does not point to us.\");\n            if (message.method !== C.ACK) {\n                this.replyStateless(message, { statusCode: 404 });\n            }\n            return;\n        }\n        // 8.2.2.1 To and Request-URI\n        // Other potential sources of received Request-URIs include\n        // the Contact header fields of requests and responses sent by the UA\n        // that establish or refresh dialogs.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.1\n        if (message.method === C.INVITE) {\n            if (!message.hasHeader(\"Contact\")) {\n                this.replyStateless(message, {\n                    statusCode: 400,\n                    reasonPhrase: \"Missing Contact Header\"\n                });\n                return;\n            }\n        }\n        // 8.2.2.2 Merged Requests\n        // If the request has no tag in the To header field, the UAS core MUST\n        // check the request against ongoing transactions.  If the From tag,\n        // Call-ID, and CSeq exactly match those associated with an ongoing\n        // transaction, but the request does not match that transaction (based\n        // on the matching rules in Section 17.2.3), the UAS core SHOULD\n        // generate a 482 (Loop Detected) response and pass it to the server\n        // transaction.\n        //\n        //    The same request has arrived at the UAS more than once, following\n        //    different paths, most likely due to forking.  The UAS processes\n        //    the first such request received and responds with a 482 (Loop\n        //    Detected) to the rest of them.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.2\n        if (!message.toTag) {\n            const transactionId = message.viaBranch;\n            if (!this.userAgentServers.has(transactionId)) {\n                const mergedRequest = Array.from(this.userAgentServers.values()).some((uas) => uas.transaction.request.fromTag === message.fromTag &&\n                    uas.transaction.request.callId === message.callId &&\n                    uas.transaction.request.cseq === message.cseq);\n                if (mergedRequest) {\n                    this.replyStateless(message, { statusCode: 482 });\n                    return;\n                }\n            }\n        }\n        // 8.2.2.3 Require\n        // https://tools.ietf.org/html/rfc3261#section-8.2.2.3\n        // TODO\n        // 8.2.3 Content Processing\n        // https://tools.ietf.org/html/rfc3261#section-8.2.3\n        // TODO\n        // 8.2.4 Applying Extensions\n        // https://tools.ietf.org/html/rfc3261#section-8.2.4\n        // TODO\n        // 8.2.5 Processing the Request\n        // Assuming all of the checks in the previous subsections are passed,\n        // the UAS processing becomes method-specific.\n        // https://tools.ietf.org/html/rfc3261#section-8.2.5\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // In that case, the UAS first applies the same processing rules for\n        // requests outside of a dialog, discussed in Section 8.2.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (message.toTag) {\n            this.receiveInsideDialogRequest(message);\n        }\n        else {\n            this.receiveOutsideDialogRequest(message);\n        }\n        return;\n    }\n    /**\n     * Once a dialog has been established between two UAs, either of them\n     * MAY initiate new transactions as needed within the dialog.  The UA\n     * sending the request will take the UAC role for the transaction.  The\n     * UA receiving the request will take the UAS role.  Note that these may\n     * be different roles than the UAs held during the transaction that\n     * established the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2\n     * @param message - Incoming request message.\n     */\n    receiveInsideDialogRequest(message) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (message.method === C.NOTIFY) {\n            const event = message.parseHeader(\"Event\");\n            if (!event || !event.event) {\n                this.replyStateless(message, { statusCode: 489 });\n                return;\n            }\n            // FIXME: Subscriber id should also matching on event id.\n            const subscriberId = message.callId + message.toTag + event.event;\n            const subscriber = this.subscribers.get(subscriberId);\n            if (subscriber) {\n                const uas = new NotifyUserAgentServer(this, message);\n                subscriber.onNotify(uas);\n                return;\n            }\n        }\n        // Requests sent within a dialog, as any other requests, are atomic.  If\n        // a particular request is accepted by the UAS, all the state changes\n        // associated with it are performed.  If the request is rejected, none\n        // of the state changes are performed.\n        //\n        //    Note that some requests, such as INVITEs, affect several pieces of\n        //    state.\n        //\n        // The UAS will receive the request from the transaction layer.  If the\n        // request has a tag in the To header field, the UAS core computes the\n        // dialog identifier corresponding to the request and compares it with\n        // existing dialogs.  If there is a match, this is a mid-dialog request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        const dialogId = message.callId + message.toTag + message.fromTag;\n        const dialog = this.dialogs.get(dialogId);\n        if (dialog) {\n            // [Sip-implementors] Reg. SIP reinvite, UPDATE and OPTIONS\n            // You got the question right.\n            //\n            // And you got the right answer too. :-)\n            //\n            //   Thanks,\n            //   Paul\n            //\n            // Robert Sparks wrote:\n            // > So I've lost track of the question during the musing.\n            // >\n            // > I _think_ the fundamental question being asked is this:\n            // >\n            // > Is an endpoint required to reject (with a 481) an OPTIONS request that\n            // > arrives with at to-tag but does not match any existing dialog state.\n            // > (Assuming some earlier requirement hasn't forced another error code). Or\n            // > is it OK if it just sends\n            // > a 200 OK anyhow.\n            // >\n            // > My take on the collection of specs is that its _not_ ok for it to send\n            // > the 200 OK anyhow and that it is required to send\n            // > the 481. I base this primarily on these sentences from 11.2 in 3261:\n            // >\n            // >    The response to an OPTIONS is constructed using the standard rules\n            // >    for a SIP response as discussed in Section 8.2.6.  The response code\n            // >    chosen MUST be the same that would have been chosen had the request\n            // >    been an INVITE.\n            // >\n            // > Did I miss the point of the question?\n            // >\n            // > On May 15, 2008, at 12:48 PM, Paul Kyzivat wrote:\n            // >\n            // >> [Including Robert in hopes of getting his insight on this.]\n            // https://lists.cs.columbia.edu/pipermail/sip-implementors/2008-May/019178.html\n            //\n            // Requests that do not change in any way the state of a dialog may be\n            // received within a dialog (for example, an OPTIONS request).  They are\n            // processed as if they had been received outside the dialog.\n            // https://tools.ietf.org/html/rfc3261#section-12.2.2\n            if (message.method === C.OPTIONS) {\n                const allowHeader = \"Allow: \" + AllowedMethods.toString();\n                const acceptHeader = \"Accept: \" + acceptedBodyTypes.toString();\n                this.replyStateless(message, {\n                    statusCode: 200,\n                    extraHeaders: [allowHeader, acceptHeader]\n                });\n                return;\n            }\n            // Pass the incoming request to the dialog for further handling.\n            dialog.receiveRequest(message);\n            return;\n        }\n        // The most important behaviors of a stateless UAS are the following:\n        // ...\n        // o  A stateless UAS MUST ignore ACK requests.\n        // ...\n        // https://tools.ietf.org/html/rfc3261#section-8.2.7\n        if (message.method === C.ACK) {\n            // If a final response to an INVITE was sent statelessly,\n            // the corresponding ACK:\n            // - will not match an existing transaction\n            // - may have tag in the To header field\n            // - not not match any existing dialogs\n            // Absorb unmatched ACKs.\n            return;\n        }\n        // If the request has a tag in the To header field, but the dialog\n        // identifier does not match any existing dialogs, the UAS may have\n        // crashed and restarted, or it may have received a request for a\n        // different (possibly failed) UAS (the UASs can construct the To tags\n        // so that a UAS can identify that the tag was for a UAS for which it is\n        // providing recovery).  Another possibility is that the incoming\n        // request has been simply mis-routed.  Based on the To tag, the UAS MAY\n        // either accept or reject the request.  Accepting the request for\n        // acceptable To tags provides robustness, so that dialogs can persist\n        // even through crashes.  UAs wishing to support this capability must\n        // take into consideration some issues such as choosing monotonically\n        // increasing CSeq sequence numbers even across reboots, reconstructing\n        // the route set, and accepting out-of-range RTP timestamps and sequence\n        // numbers.\n        //\n        // If the UAS wishes to reject the request because it does not wish to\n        // recreate the dialog, it MUST respond to the request with a 481\n        // (Call/Transaction Does Not Exist) status code and pass that to the\n        // server transaction.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        this.replyStateless(message, { statusCode: 481 });\n        return;\n    }\n    /**\n     * Assuming all of the checks in the previous subsections are passed,\n     * the UAS processing becomes method-specific.\n     *  https://tools.ietf.org/html/rfc3261#section-8.2.5\n     * @param message - Incoming request message.\n     */\n    receiveOutsideDialogRequest(message) {\n        switch (message.method) {\n            case C.ACK:\n                // Absorb stray out of dialog ACKs\n                break;\n            case C.BYE:\n                // If the BYE does not match an existing dialog, the UAS core SHOULD\n                // generate a 481 (Call/Transaction Does Not Exist) response and pass\n                // that to the server transaction. This rule means that a BYE sent\n                // without tags by a UAC will be rejected.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                this.replyStateless(message, { statusCode: 481 });\n                break;\n            case C.CANCEL:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n                break;\n            case C.INFO:\n                // Use of the INFO method does not constitute a separate dialog usage.\n                // INFO messages are always part of, and share the fate of, an invite\n                // dialog usage [RFC5057].  INFO messages cannot be sent as part of\n                // other dialog usages, or outside an existing dialog.\n                // https://tools.ietf.org/html/rfc6086#section-1\n                this.replyStateless(message, { statusCode: 405 }); // Should never happen\n                break;\n            case C.INVITE:\n                // https://tools.ietf.org/html/rfc3261#section-13.3.1\n                {\n                    const uas = new InviteUserAgentServer(this, message);\n                    this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject();\n                }\n                break;\n            case C.MESSAGE:\n                // MESSAGE requests are discouraged inside a dialog.  Implementations\n                // are restricted from creating a usage for the purpose of carrying a\n                // sequence of MESSAGE requests (though some implementations use it that\n                // way, against the standard recommendation).\n                // https://tools.ietf.org/html/rfc5057#section-5.3\n                {\n                    const uas = new MessageUserAgentServer(this, message);\n                    this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case C.NOTIFY:\n                // Obsoleted by: RFC 6665\n                // If any non-SUBSCRIBE mechanisms are defined to create subscriptions,\n                // it is the responsibility of the parties defining those mechanisms to\n                // ensure that correlation of a NOTIFY message to the corresponding\n                // subscription is possible.  Designers of such mechanisms are also\n                // warned to make a distinction between sending a NOTIFY message to a\n                // subscriber who is aware of the subscription, and sending a NOTIFY\n                // message to an unsuspecting node.  The latter behavior is invalid, and\n                // MUST receive a \"481 Subscription does not exist\" response (unless\n                // some other 400- or 500-class error code is more applicable), as\n                // described in section 3.2.4.  In other words, knowledge of a\n                // subscription must exist in both the subscriber and the notifier to be\n                // valid, even if installed via a non-SUBSCRIBE mechanism.\n                // https://tools.ietf.org/html/rfc3265#section-3.2\n                //\n                // NOTIFY requests are sent to inform subscribers of changes in state to\n                // which the subscriber has a subscription.  Subscriptions are created\n                // using the SUBSCRIBE method.  In legacy implementations, it is\n                // possible that other means of subscription creation have been used.\n                // However, this specification does not allow the creation of\n                // subscriptions except through SUBSCRIBE requests and (for backwards-\n                // compatibility) REFER requests [RFC3515].\n                // https://tools.ietf.org/html/rfc6665#section-3.2\n                {\n                    const uas = new NotifyUserAgentServer(this, message);\n                    this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.reject({ statusCode: 405 });\n                }\n                break;\n            case C.OPTIONS:\n                // https://tools.ietf.org/html/rfc3261#section-11.2\n                {\n                    const allowHeader = \"Allow: \" + AllowedMethods.toString();\n                    const acceptHeader = \"Accept: \" + acceptedBodyTypes.toString();\n                    this.replyStateless(message, {\n                        statusCode: 200,\n                        extraHeaders: [allowHeader, acceptHeader]\n                    });\n                }\n                break;\n            case C.REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new ReferUserAgentServer(this, message);\n                    this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject({ statusCode: 405 });\n                }\n                break;\n            case C.REGISTER:\n                // https://tools.ietf.org/html/rfc3261#section-10.3\n                {\n                    const uas = new RegisterUserAgentServer(this, message);\n                    this.delegate.onRegister ? this.delegate.onRegister(uas) : uas.reject({ statusCode: 405 });\n                }\n                break;\n            case C.SUBSCRIBE:\n                // https://tools.ietf.org/html/rfc6665#section-4.2\n                {\n                    const uas = new SubscribeUserAgentServer(this, message);\n                    this.delegate.onSubscribe ? this.delegate.onSubscribe(uas) : uas.reject({ statusCode: 480 });\n                }\n                break;\n            default:\n                throw new Error(`Unexpected out of dialog request method ${message.method}.`);\n        }\n        return;\n    }\n    /**\n     * Responses are first processed by the transport layer and then passed\n     * up to the transaction layer.  The transaction layer performs its\n     * processing and then passes the response up to the TU.  The majority\n     * of response processing in the TU is method specific.  However, there\n     * are some general behaviors independent of the method.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3\n     * @param message - Incoming response message from transport layer.\n     */\n    receiveResponseFromTransport(message) {\n        // 8.1.3.1 Transaction Layer Errors\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // Handled by transaction layer callbacks.\n        // 8.1.3.2 Unrecognized Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n        // TODO\n        // 8.1.3.3 Vias\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.3\n        if (message.getHeaders(\"via\").length > 1) {\n            this.logger.warn(\"More than one Via header field present in the response, dropping\");\n            return;\n        }\n        // 8.1.3.4 Processing 3xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.4\n        // TODO\n        // 8.1.3.5 Processing 4xx Responses\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        // TODO\n        // When the transport layer in the client receives a response, it has to\n        // determine which client transaction will handle the response, so that\n        // the processing of Sections 17.1.1 and 17.1.2 can take place.  The\n        // branch parameter in the top Via header field is used for this\n        // purpose.  A response matches a client transaction under two\n        // conditions:\n        //\n        //    1.  If the response has the same value of the branch parameter in\n        //        the top Via header field as the branch parameter in the top\n        //        Via header field of the request that created the transaction.\n        //\n        //    2.  If the method parameter in the CSeq header field matches the\n        //        method of the request that created the transaction.  The\n        //        method is needed since a CANCEL request constitutes a\n        //        different transaction, but shares the same value of the branch\n        //        parameter.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.3\n        const userAgentClientId = message.viaBranch + message.method;\n        const userAgentClient = this.userAgentClients.get(userAgentClientId);\n        // The client transport uses the matching procedures of Section\n        // 17.1.3 to attempt to match the response to an existing\n        // transaction.  If there is a match, the response MUST be passed to\n        // that transaction.  Otherwise, any element other than a stateless\n        // proxy MUST silently discard the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.9\n        if (userAgentClient) {\n            userAgentClient.transaction.receiveResponse(message);\n        }\n        else {\n            this.logger.warn(`Discarding unmatched ${message.statusCode} response to ${message.method} ${userAgentClientId}.`);\n        }\n    }\n}\n","import { getReasonPhrase, newTag, utf8Length } from \"./utils.js\";\n/**\n * When a UAS wishes to construct a response to a request, it follows\n * the general procedures detailed in the following subsections.\n * Additional behaviors specific to the response code in question, which\n * are not detailed in this section, may also be required.\n * https://tools.ietf.org/html/rfc3261#section-8.2.6\n * @internal\n */\nexport function constructOutgoingResponse(message, options) {\n    const CRLF = \"\\r\\n\";\n    if (options.statusCode < 100 || options.statusCode > 699) {\n        throw new TypeError(\"Invalid statusCode: \" + options.statusCode);\n    }\n    const reasonPhrase = options.reasonPhrase ? options.reasonPhrase : getReasonPhrase(options.statusCode);\n    // SIP responses are distinguished from requests by having a Status-Line\n    // as their start-line.  A Status-Line consists of the protocol version\n    // followed by a numeric Status-Code and its associated textual phrase,\n    // with each element separated by a single SP character.\n    // https://tools.ietf.org/html/rfc3261#section-7.2\n    let response = \"SIP/2.0 \" + options.statusCode + \" \" + reasonPhrase + CRLF;\n    // One largely non-method-specific guideline for the generation of\n    // responses is that UASs SHOULD NOT issue a provisional response for a\n    // non-INVITE request.  Rather, UASs SHOULD generate a final response to\n    // a non-INVITE request as soon as possible.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    if (options.statusCode >= 100 && options.statusCode < 200) {\n        // TODO\n    }\n    // When a 100 (Trying) response is generated, any Timestamp header field\n    // present in the request MUST be copied into this 100 (Trying)\n    // response.  If there is a delay in generating the response, the UAS\n    // SHOULD add a delay value into the Timestamp value in the response.\n    // This value MUST contain the difference between the time of sending of\n    // the response and receipt of the request, measured in seconds.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.1\n    if (options.statusCode === 100) {\n        // TODO\n    }\n    // The From field of the response MUST equal the From header field of\n    // the request.  The Call-ID header field of the response MUST equal the\n    // Call-ID header field of the request.  The CSeq header field of the\n    // response MUST equal the CSeq field of the request.  The Via header\n    // field values in the response MUST equal the Via header field values\n    // in the request and MUST maintain the same ordering.\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    const fromHeader = \"From: \" + message.getHeader(\"From\") + CRLF;\n    const callIdHeader = \"Call-ID: \" + message.callId + CRLF;\n    const cSeqHeader = \"CSeq: \" + message.cseq + \" \" + message.method + CRLF;\n    const viaHeaders = message.getHeaders(\"via\").reduce((previous, current) => {\n        return previous + \"Via: \" + current + CRLF;\n    }, \"\");\n    // If a request contained a To tag in the request, the To header field\n    // in the response MUST equal that of the request.  However, if the To\n    // header field in the request did not contain a tag, the URI in the To\n    // header field in the response MUST equal the URI in the To header\n    // field; additionally, the UAS MUST add a tag to the To header field in\n    // the response (with the exception of the 100 (Trying) response, in\n    // which a tag MAY be present).  This serves to identify the UAS that is\n    // responding, possibly resulting in a component of a dialog ID.  The\n    // same tag MUST be used for all responses to that request, both final\n    // and provisional (again excepting the 100 (Trying)).\n    // https://tools.ietf.org/html/rfc3261#section-8.2.6.2\n    let toHeader = \"To: \" + message.getHeader(\"to\");\n    if (options.statusCode > 100 && !message.parseHeader(\"to\").hasParam(\"tag\")) {\n        let toTag = options.toTag;\n        if (!toTag) {\n            // Stateless UAS Behavior...\n            // o  To header tags MUST be generated for responses in a stateless\n            //    manner - in a manner that will generate the same tag for the\n            //    same request consistently.  For information on tag construction\n            //    see Section 19.3.\n            // https://tools.ietf.org/html/rfc3261#section-8.2.7\n            toTag = newTag(); // FIXME: newTag() currently generates random tags\n        }\n        toHeader += \";tag=\" + toTag;\n    }\n    toHeader += CRLF;\n    // FIXME: TODO: needs review... moved to InviteUserAgentServer (as it is specific to that)\n    // let recordRouteHeaders = \"\";\n    // if (request.method === C.INVITE && statusCode > 100 && statusCode <= 200) {\n    //   recordRouteHeaders = request.getHeaders(\"record-route\").reduce((previous, current) => {\n    //     return previous + \"Record-Route: \" + current + CRLF;\n    //   }, \"\");\n    // }\n    // FIXME: TODO: needs review...\n    let supportedHeader = \"\";\n    if (options.supported) {\n        supportedHeader = \"Supported: \" + options.supported.join(\", \") + CRLF;\n    }\n    // FIXME: TODO: needs review...\n    let userAgentHeader = \"\";\n    if (options.userAgent) {\n        userAgentHeader = \"User-Agent: \" + options.userAgent + CRLF;\n    }\n    let extensionHeaders = \"\";\n    if (options.extraHeaders) {\n        extensionHeaders = options.extraHeaders.reduce((previous, current) => {\n            return previous + current.trim() + CRLF;\n        }, \"\");\n    }\n    // The relative order of header fields with different field names is not\n    // significant.  However, it is RECOMMENDED that header fields which are\n    // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n    // Max-Forwards, and Proxy-Authorization, for example) appear towards\n    // the top of the message to facilitate rapid parsing.\n    // https://tools.ietf.org/html/rfc3261#section-7.3.1\n    // response += recordRouteHeaders;\n    response += viaHeaders;\n    response += fromHeader;\n    response += toHeader;\n    response += cSeqHeader;\n    response += callIdHeader;\n    response += supportedHeader;\n    response += userAgentHeader;\n    response += extensionHeaders;\n    if (options.body) {\n        response += \"Content-Type: \" + options.body.contentType + CRLF;\n        response += \"Content-Length: \" + utf8Length(options.body.content) + CRLF + CRLF;\n        response += options.body.content;\n    }\n    else {\n        response += \"Content-Length: \" + 0 + CRLF + CRLF;\n    }\n    return { message: response };\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { Timers } from \"../timers.js\";\nimport { ServerTransaction } from \"./server-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * INVITE Server Transaction.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-17.2.1\n * @public\n */\nexport class InviteServerTransaction extends ServerTransaction {\n    /**\n     * Constructor.\n     * Upon construction, a \"100 Trying\" reply will be immediately sent.\n     * After construction the transaction will be in the \"proceeding\" state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     * @param request - Incoming INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Proceeding, \"sip.transaction.ist\");\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        this.stopProgressExtensionTimer();\n        if (this.H) {\n            clearTimeout(this.H);\n            this.H = undefined;\n        }\n        if (this.I) {\n            clearTimeout(this.I);\n            this.I = undefined;\n        }\n        if (this.L) {\n            clearTimeout(this.L);\n            this.L = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"ist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */\n    receiveRequest(request) {\n        switch (this.state) {\n            case TransactionState.Proceeding:\n                // If a request retransmission is received while in the \"Proceeding\" state, the most\n                // recent provisional response that was received from the TU MUST be passed to the\n                // transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.INVITE) {\n                    if (this.lastProvisionalResponse) {\n                        this.send(this.lastProvisionalResponse).catch((error) => {\n                            this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                        });\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Accepted:\n                // While in the \"Accepted\" state, any retransmissions of the INVITE\n                // received will match this transaction state machine and will be\n                // absorbed by the machine without changing its state. These\n                // retransmissions are not passed onto the TU.\n                // https://tools.ietf.org/html/rfc6026#section-7.1\n                if (request.method === C.INVITE) {\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // Furthermore, while in the \"Completed\" state, if a request retransmission is\n                // received, the server SHOULD pass the response to the transport for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.INVITE) {\n                    if (!this.lastFinalResponse) {\n                        throw new Error(\"Last final response undefined.\");\n                    }\n                    this.send(this.lastFinalResponse).catch((error) => {\n                        this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                    });\n                    return;\n                }\n                // If an ACK is received while the server transaction is in the \"Completed\" state,\n                // the server transaction MUST transition to the \"Confirmed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.ACK) {\n                    this.stateTransition(TransactionState.Confirmed);\n                    return;\n                }\n                break;\n            case TransactionState.Confirmed:\n                // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n                // triggered from retransmissions of the final response.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (request.method === C.INVITE || request.method === C.ACK) {\n                    return;\n                }\n                break;\n            case TransactionState.Terminated:\n                // For good measure absorb any additional messages that arrive (should not happen).\n                if (request.method === C.INVITE || request.method === C.ACK) {\n                    return;\n                }\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${request.method} request while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response.\n     * @param response - Response.\n     */\n    receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        switch (this.state) {\n            case TransactionState.Proceeding:\n                // The TU passes any number of provisional responses to the server\n                // transaction. So long as the server transaction is in the\n                // \"Proceeding\" state, each of these MUST be passed to the transport\n                // layer for transmission. They are not sent reliably by the\n                // transaction layer (they are not retransmitted by it) and do not cause\n                // a change in the state of the server transaction.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.lastProvisionalResponse = response;\n                    // Start the progress extension timer only for a non-100 provisional response.\n                    if (statusCode > 100) {\n                        this.startProgressExtensionTimer(); // FIXME: remove\n                    }\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send 1xx response.\");\n                    });\n                    return;\n                }\n                // If, while in the \"Proceeding\" state, the TU passes a 2xx response\n                // to the server transaction, the server transaction MUST pass this\n                // response to the transport layer for transmission. It is not\n                // retransmitted by the server transaction; retransmissions of 2xx\n                // responses are handled by the TU. The server transaction MUST then\n                // transition to the \"Accepted\" state.\n                // https://tools.ietf.org/html/rfc6026#section-8.5\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition(TransactionState.Accepted);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                // While in the \"Proceeding\" state, if the TU passes a response with\n                // status code from 300 to 699 to the server transaction, the response\n                // MUST be passed to the transport layer for transmission, and the state\n                // machine MUST enter the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.1\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.lastFinalResponse = response;\n                    this.stateTransition(TransactionState.Completed);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send non-2xx final response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Accepted:\n                // While in the \"Accepted\" state, if the TU passes a 2xx response,\n                // the server transaction MUST pass the response to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc6026#section-8.7\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send 2xx response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                break;\n            case TransactionState.Confirmed:\n                break;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * Retransmit the last 2xx response. This is a noop if not in the \"accepted\" state.\n     */\n    retransmitAcceptedResponse() {\n        if (this.state === TransactionState.Accepted && this.lastFinalResponse) {\n            this.send(this.lastFinalResponse).catch((error) => {\n                this.logTransportError(error, \"Failed to send 2xx response.\");\n            });\n        }\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and MUST remain in the current state.\n     * https://tools.ietf.org/html/rfc6026#section-8.8\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n    }\n    /** For logging. */\n    typeToString() {\n        return \"INVITE server transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */\n    stateTransition(newState) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Proceeding:\n                invalidStateTransition();\n                break;\n            case TransactionState.Accepted:\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Confirmed:\n                if (this.state !== TransactionState.Completed) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Accepted &&\n                    this.state !== TransactionState.Completed &&\n                    this.state !== TransactionState.Confirmed) {\n                    invalidStateTransition();\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // On any state transition, stop resending provisional responses\n        this.stopProgressExtensionTimer();\n        // The purpose of the \"Accepted\" state is to absorb retransmissions of an accepted INVITE request.\n        // Any such retransmissions are absorbed entirely within the server transaction.\n        // They are not passed up to the TU since any downstream UAS cores that accepted the request have\n        // taken responsibility for reliability and will already retransmit their 2xx responses if necessary.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === TransactionState.Accepted) {\n            this.L = setTimeout(() => this.timerL(), Timers.TIMER_L);\n        }\n        // When the \"Completed\" state is entered, timer H MUST be set to fire in 64*T1 seconds for all transports.\n        // Timer H determines when the server transaction abandons retransmitting the response.\n        // If an ACK is received while the server transaction is in the \"Completed\" state,\n        // the server transaction MUST transition to the \"Confirmed\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === TransactionState.Completed) {\n            // FIXME: Missing timer G for unreliable transports.\n            this.H = setTimeout(() => this.timerH(), Timers.TIMER_H);\n        }\n        // The purpose of the \"Confirmed\" state is to absorb any additional ACK messages that arrive,\n        // triggered from retransmissions of the final response. When this state is entered, timer I\n        // is set to fire in T4 seconds for unreliable transports, and zero seconds for reliable\n        // transports. Once timer I fires, the server MUST transition to the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.1\n        if (newState === TransactionState.Confirmed) {\n            // FIXME: This timer is not getting set correctly for unreliable transports.\n            this.I = setTimeout(() => this.timerI(), Timers.TIMER_I);\n        }\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */\n    startProgressExtensionTimer() {\n        // Start the progress extension timer only for the first non-100 provisional response.\n        if (this.progressExtensionTimer === undefined) {\n            this.progressExtensionTimer = setInterval(() => {\n                this.logger.debug(`Progress extension timer expired for INVITE server transaction ${this.id}.`);\n                if (!this.lastProvisionalResponse) {\n                    throw new Error(\"Last provisional response undefined.\");\n                }\n                this.send(this.lastProvisionalResponse).catch((error) => {\n                    this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                });\n            }, Timers.PROVISIONAL_RESPONSE_INTERVAL);\n        }\n    }\n    /**\n     * FIXME: UAS Provisional Retransmission Timer id. See RFC 3261 Section 13.3.1.1\n     * This is in the wrong place. This is not a transaction level thing. It's a UAS level thing.\n     */\n    stopProgressExtensionTimer() {\n        if (this.progressExtensionTimer !== undefined) {\n            clearInterval(this.progressExtensionTimer);\n            this.progressExtensionTimer = undefined;\n        }\n    }\n    /**\n     * While in the \"Proceeding\" state, if the TU passes a response with status code\n     * from 300 to 699 to the server transaction, the response MUST be passed to the\n     * transport layer for transmission, and the state machine MUST enter the \"Completed\" state.\n     * For unreliable transports, timer G is set to fire in T1 seconds, and is not set to fire for\n     * reliable transports. If timer G fires, the response is passed to the transport layer once\n     * more for retransmission, and timer G is set to fire in MIN(2*T1, T2) seconds. From then on,\n     * when timer G fires, the response is passed to the transport again for transmission, and\n     * timer G is reset with a value that doubles, unless that value exceeds T2, in which case\n     * it is reset with the value of T2.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */\n    timerG() {\n        // TODO\n    }\n    /**\n     * If timer H fires while in the \"Completed\" state, it implies that the ACK was never received.\n     * In this case, the server transaction MUST transition to the \"Terminated\" state, and MUST\n     * indicate to the TU that a transaction failure has occurred.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */\n    timerH() {\n        this.logger.debug(`Timer H expired for INVITE server transaction ${this.id}.`);\n        if (this.state === TransactionState.Completed) {\n            this.logger.warn(\"ACK to negative final response was never received, terminating transaction.\");\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * Once timer I fires, the server MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.1\n     */\n    timerI() {\n        this.logger.debug(`Timer I expired for INVITE server transaction ${this.id}.`);\n        this.stateTransition(TransactionState.Terminated);\n    }\n    /**\n     * When Timer L fires and the state machine is in the \"Accepted\" state, the machine MUST\n     * transition to the \"Terminated\" state. Once the transaction is in the \"Terminated\" state,\n     * it MUST be destroyed immediately. Timer L reflects the amount of time the server\n     * transaction could receive 2xx responses for retransmission from the\n     * TU while it is waiting to receive an ACK.\n     * https://tools.ietf.org/html/rfc6026#section-7.1\n     * https://tools.ietf.org/html/rfc6026#section-8.7\n     */\n    timerL() {\n        this.logger.debug(`Timer L expired for INVITE server transaction ${this.id}.`);\n        if (this.state === TransactionState.Accepted) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { Transaction } from \"./transaction.js\";\n/**\n * Server Transaction.\n * @remarks\n * The server transaction is responsible for the delivery of requests to\n * the TU and the reliable transmission of responses.  It accomplishes\n * this through a state machine.  Server transactions are created by the\n * core when a request is received, and transaction handling is desired\n * for that request (this is not always the case).\n * https://tools.ietf.org/html/rfc3261#section-17.2\n * @public\n */\nexport class ServerTransaction extends Transaction {\n    constructor(_request, transport, user, state, loggerCategory) {\n        super(transport, user, _request.viaBranch, state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n    }\n    /** The incoming request the transaction handling. */\n    get request() {\n        return this._request;\n    }\n}\n","import { TransportError } from \"../exceptions/transport-error.js\";\n/**\n * Transaction.\n * @remarks\n * SIP is a transactional protocol: interactions between components take\n * place in a series of independent message exchanges.  Specifically, a\n * SIP transaction consists of a single request and any responses to\n * that request, which include zero or more provisional responses and\n * one or more final responses.  In the case of a transaction where the\n * request was an INVITE (known as an INVITE transaction), the\n * transaction also includes the ACK only if the final response was not\n * a 2xx response.  If the response was a 2xx, the ACK is not considered\n * part of the transaction.\n * https://tools.ietf.org/html/rfc3261#section-17\n * @public\n */\nexport class Transaction {\n    constructor(_transport, _user, _id, _state, loggerCategory) {\n        this._transport = _transport;\n        this._user = _user;\n        this._id = _id;\n        this._state = _state;\n        this.listeners = new Array();\n        this.logger = _user.loggerFactory.getLogger(loggerCategory, _id);\n        this.logger.debug(`Constructing ${this.typeToString()} with id ${this.id}.`);\n    }\n    /**\n     * Destructor.\n     * Once the transaction is in the \"terminated\" state, it is destroyed\n     * immediately and there is no need to call `dispose`. However, if a\n     * transaction needs to be ended prematurely, the transaction user may\n     * do so by calling this method (for example, perhaps the UA is shutting down).\n     * No state transition will occur upon calling this method, all outstanding\n     * transmission timers will be cancelled, and use of the transaction after\n     * calling `dispose` is undefined.\n     */\n    dispose() {\n        this.logger.debug(`Destroyed ${this.typeToString()} with id ${this.id}.`);\n    }\n    /** Transaction id. */\n    get id() {\n        return this._id;\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        throw new Error(\"Invalid kind.\");\n    }\n    /** Transaction state. */\n    get state() {\n        return this._state;\n    }\n    /** Transaction transport. */\n    get transport() {\n        return this._transport;\n    }\n    /**\n     * Sets up a function that will be called whenever the transaction state changes.\n     * @param listener - Callback function.\n     * @param options - An options object that specifies characteristics about the listener.\n     *                  If once true, indicates that the listener should be invoked at most once after being added.\n     *                  If once true, the listener would be automatically removed when invoked.\n     */\n    addStateChangeListener(listener, options) {\n        const onceWrapper = () => {\n            this.removeStateChangeListener(onceWrapper);\n            listener();\n        };\n        (options === null || options === void 0 ? void 0 : options.once) === true ? this.listeners.push(onceWrapper) : this.listeners.push(listener);\n    }\n    /**\n     * This is currently public so tests may spy on it.\n     * @internal\n     */\n    notifyStateChangeListeners() {\n        this.listeners.slice().forEach((listener) => listener());\n    }\n    /**\n     * Removes a listener previously registered with addStateListener.\n     * @param listener - Callback function.\n     */\n    removeStateChangeListener(listener) {\n        this.listeners = this.listeners.filter((l) => l !== listener);\n    }\n    logTransportError(error, message) {\n        this.logger.error(error.message);\n        this.logger.error(`Transport error occurred in ${this.typeToString()} with id ${this.id}.`);\n        this.logger.error(message);\n    }\n    /**\n     * Pass message to transport for transmission. If transport fails,\n     * the transaction user is notified by callback to onTransportError().\n     * @returns\n     * Rejects with `TransportError` if transport fails.\n     */\n    send(message) {\n        return this.transport.send(message).catch((error) => {\n            // If the transport rejects, it SHOULD reject with a TransportError.\n            // But the transport may be external code, so we are careful\n            // make sure we convert it to a TransportError if need be.\n            if (error instanceof TransportError) {\n                this.onTransportError(error);\n                throw error;\n            }\n            let transportError;\n            if (error && typeof error.message === \"string\") {\n                transportError = new TransportError(error.message);\n            }\n            else {\n                transportError = new TransportError();\n            }\n            this.onTransportError(transportError);\n            throw transportError;\n        });\n    }\n    setState(state) {\n        this.logger.debug(`State change to \"${state}\" on ${this.typeToString()} with id ${this.id}.`);\n        this._state = state;\n        if (this._user.onStateChange) {\n            this._user.onStateChange(state);\n        }\n        this.notifyStateChangeListeners();\n    }\n    typeToString() {\n        return \"UnknownType\";\n    }\n}\n","import { Exception } from \"./exception.js\";\n/**\n * Transport error.\n * @public\n */\nexport class TransportError extends Exception {\n    constructor(message) {\n        super(message ? message : \"Unspecified transport error.\");\n    }\n}\n","/**\n * Transaction state.\n * @public\n */\nexport var TransactionState;\n(function (TransactionState) {\n    TransactionState[\"Accepted\"] = \"Accepted\";\n    TransactionState[\"Calling\"] = \"Calling\";\n    TransactionState[\"Completed\"] = \"Completed\";\n    TransactionState[\"Confirmed\"] = \"Confirmed\";\n    TransactionState[\"Proceeding\"] = \"Proceeding\";\n    TransactionState[\"Terminated\"] = \"Terminated\";\n    TransactionState[\"Trying\"] = \"Trying\";\n})(TransactionState = TransactionState || (TransactionState = {}));\n","import { Timers } from \"../timers.js\";\nimport { ClientTransaction } from \"./client-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * Non-INVITE Client Transaction.\n * @remarks\n * Non-INVITE transactions do not make use of ACK.\n * They are simple request-response interactions.\n * https://tools.ietf.org/html/rfc3261#section-17.1.2\n * @public\n */\nexport class NonInviteClientTransaction extends ClientTransaction {\n    /**\n     * Constructor\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2\n     * @param request - The outgoing Non-INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Trying, \"sip.transaction.nict\");\n        // FIXME: Timer E for unreliable transports not implemented.\n        //\n        // The \"Trying\" state is entered when the TU initiates a new client\n        // transaction with a request.  When entering this state, the client\n        // transaction SHOULD set timer F to fire in 64*T1 seconds. The request\n        // MUST be passed to the transport layer for transmission.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        this.F = setTimeout(() => this.timerF(), Timers.TIMER_F);\n        this.send(request.toString()).catch((error) => {\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.F) {\n            clearTimeout(this.F);\n            this.F = undefined;\n        }\n        if (this.K) {\n            clearTimeout(this.K);\n            this.K = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"nict\";\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */\n    receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        switch (this.state) {\n            case TransactionState.Trying:\n                // If a provisional response is received while in the \"Trying\" state, the\n                // response MUST be passed to the TU, and then the client transaction\n                // SHOULD move to the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition(TransactionState.Proceeding);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Trying\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Proceeding:\n                // If a provisional response is received while in the \"Proceeding\" state,\n                // the response MUST be passed to the TU. (From Figure 6)\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) {\n                        return this.user.receiveResponse(response);\n                    }\n                }\n                // If a final response (status codes 200-699) is received while in the\n                // \"Proceeding\" state, the response MUST be passed to the TU, and the\n                // client transaction MUST transition to the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    if (statusCode === 408) {\n                        this.onRequestTimeout();\n                        return;\n                    }\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // The \"Completed\" state exists to buffer any additional response\n                // retransmissions that may be received (which is why the client\n                // transaction remains there only for unreliable transports).\n                // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n                return;\n            case TransactionState.Terminated:\n                // For good measure just absorb additional response retransmissions.\n                return;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE client transaction received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure has occurred,\n     * and the client transaction SHOULD transition directly to the \"Terminated\" state.\n     * The TU will handle the fail over mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - Transport error\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n        this.stateTransition(TransactionState.Terminated, true);\n    }\n    /** For logging. */\n    typeToString() {\n        return \"non-INVITE client transaction\";\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Trying:\n                invalidStateTransition();\n                break;\n            case TransactionState.Proceeding:\n                if (this.state !== TransactionState.Trying) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Trying && this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Trying &&\n                    this.state !== TransactionState.Proceeding &&\n                    this.state !== TransactionState.Completed) {\n                    if (!dueToTransportError) {\n                        invalidStateTransition();\n                    }\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // Once the client transaction enters the \"Completed\" state, it MUST set\n        // Timer K to fire in T4 seconds for unreliable transports, and zero\n        // seconds for reliable transports  The \"Completed\" state exists to\n        // buffer any additional response retransmissions that may be received\n        // (which is why the client transaction remains there only for unreliable transports).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === TransactionState.Completed) {\n            if (this.F) {\n                clearTimeout(this.F);\n                this.F = undefined;\n            }\n            this.K = setTimeout(() => this.timerK(), Timers.TIMER_K);\n        }\n        // Once the transaction is in the terminated state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * If Timer F fires while the client transaction is still in the\n     * \"Trying\" state, the client transaction SHOULD inform the TU about the\n     * timeout, and then it SHOULD enter the \"Terminated\" state.\n     * If timer F fires while in the \"Proceeding\" state, the TU MUST be informed of\n     * a timeout, and the client transaction MUST transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */\n    timerF() {\n        this.logger.debug(`Timer F expired for non-INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Trying || this.state === TransactionState.Proceeding) {\n            this.onRequestTimeout();\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * If Timer K fires while in this (COMPLETED) state, the client transaction\n     * MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.2.2\n     */\n    timerK() {\n        if (this.state === TransactionState.Completed) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { Transaction } from \"./transaction.js\";\n/**\n * Client Transaction.\n * @remarks\n * The client transaction provides its functionality through the\n * maintenance of a state machine.\n *\n * The TU communicates with the client transaction through a simple\n * interface.  When the TU wishes to initiate a new transaction, it\n * creates a client transaction and passes it the SIP request to send\n * and an IP address, port, and transport to which to send it.  The\n * client transaction begins execution of its state machine.  Valid\n * responses are passed up to the TU from the client transaction.\n * https://tools.ietf.org/html/rfc3261#section-17.1\n * @public\n */\nexport class ClientTransaction extends Transaction {\n    constructor(_request, transport, user, state, loggerCategory) {\n        super(transport, user, ClientTransaction.makeId(_request), state, loggerCategory);\n        this._request = _request;\n        this.user = user;\n        // The Via header field indicates the transport used for the transaction\n        // and identifies the location where the response is to be sent.  A Via\n        // header field value is added only after the transport that will be\n        // used to reach the next hop has been selected (which may involve the\n        // usage of the procedures in [4]).\n        // https://tools.ietf.org/html/rfc3261#section-8.1.1.7\n        _request.setViaHeader(this.id, transport.protocol);\n    }\n    static makeId(request) {\n        if (request.method === \"CANCEL\") {\n            if (!request.branch) {\n                throw new Error(\"Outgoing CANCEL request without a branch.\");\n            }\n            return request.branch;\n        }\n        else {\n            return \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n        }\n    }\n    /** The outgoing request the transaction handling. */\n    get request() {\n        return this._request;\n    }\n    /**\n     * A 408 to non-INVITE will always arrive too late to be useful ([3]),\n     * The client already has full knowledge of the timeout. The only\n     * information this message would convey is whether or not the server\n     * believed the transaction timed out. However, with the current design\n     * of the NIT, a client cannot do anything with this knowledge. Thus,\n     * the 408 is simply wasting network resources and contributes to the\n     * response bombardment illustrated in [3].\n     * https://tools.ietf.org/html/rfc4320#section-4.1\n     */\n    onRequestTimeout() {\n        if (this.user.onRequestTimeout) {\n            this.user.onRequestTimeout();\n        }\n    }\n}\n","import { Dialog } from \"../dialogs/dialog.js\";\nimport { SessionDialog } from \"../dialogs/session-dialog.js\";\nimport { SignalingState } from \"../session/session.js\";\nimport { InviteClientTransaction } from \"../transactions/invite-client-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * INVITE UAC.\n * @remarks\n * 13 Initiating a Session\n * https://tools.ietf.org/html/rfc3261#section-13\n * 13.1 Overview\n * https://tools.ietf.org/html/rfc3261#section-13.1\n * 13.2 UAC Processing\n * https://tools.ietf.org/html/rfc3261#section-13.2\n * @public\n */\nexport class InviteUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(InviteClientTransaction, core, message, delegate);\n        this.confirmedDialogAcks = new Map();\n        this.confirmedDialogs = new Map();\n        this.earlyDialogs = new Map();\n        this.delegate = delegate;\n    }\n    dispose() {\n        // The UAC core considers the INVITE transaction completed 64*T1 seconds\n        // after the reception of the first 2xx response.  At this point all the\n        // early dialogs that have not transitioned to established dialogs are\n        // terminated.  Once the INVITE transaction is considered completed by\n        // the UAC core, no more new 2xx responses are expected to arrive.\n        //\n        // If, after acknowledging any 2xx response to an INVITE, the UAC does\n        // not want to continue with that dialog, then the UAC MUST terminate\n        // the dialog by sending a BYE request as described in Section 15.\n        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n        this.earlyDialogs.forEach((earlyDialog) => earlyDialog.dispose());\n        this.earlyDialogs.clear();\n        super.dispose();\n    }\n    /**\n     * Special case for transport error while sending ACK.\n     * @param error - Transport error\n     */\n    onTransportError(error) {\n        if (this.transaction.state === TransactionState.Calling) {\n            return super.onTransportError(error);\n        }\n        // If not in 'calling' state, the transport error occurred while sending an ACK.\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error while sending ACK.\");\n    }\n    /**\n     * Once the INVITE has been passed to the INVITE client transaction, the\n     * UAC waits for responses for the INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2\n     * @param incomingResponse - Incoming response to INVITE request.\n     */\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message)) {\n            return;\n        }\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        switch (true) {\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) {\n                    this.delegate.onTrying({ message });\n                }\n                return;\n            case /^1[0-9]{2}$/.test(statusCode):\n                // Zero, one or multiple provisional responses may arrive before one or\n                // more final responses are received.  Provisional responses for an\n                // INVITE request can create \"early dialogs\".  If a provisional response\n                // has a tag in the To field, and if the dialog ID of the response does\n                // not match an existing dialog, one is constructed using the procedures\n                // defined in Section 12.1.2.\n                //\n                // The early dialog will only be needed if the UAC needs to send a\n                // request to its peer within the dialog before the initial INVITE\n                // transaction completes.  Header fields present in a provisional\n                // response are applicable as long as the dialog is in the early state\n                // (for example, an Allow header field in a provisional response\n                // contains the methods that can be used in the dialog while this is in\n                // the early state).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.1\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Provisional without to tag, no dialog to create.\n                    if (!message.toTag) {\n                        this.logger.warn(\"Non-100 1xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Provisional without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"Non-100 1xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = Dialog.initialDialogStateForUserAgentClient(this.message, message);\n                    // Have existing early dialog or create a new one.\n                    let earlyDialog = this.earlyDialogs.get(dialogState.id);\n                    if (!earlyDialog) {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof InviteClientTransaction)) {\n                            throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        }\n                        earlyDialog = new SessionDialog(transaction, this.core, dialogState);\n                        this.earlyDialogs.set(earlyDialog.id, earlyDialog);\n                    }\n                    // Guard against out of order reliable provisional responses.\n                    // Note that this is where the rseq tracking is done.\n                    if (!earlyDialog.reliableSequenceGuard(message)) {\n                        this.logger.warn(\"1xx INVITE reliable response received out of order or is a retransmission, dropping.\");\n                        return;\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (earlyDialog.signalingState === SignalingState.Initial ||\n                        earlyDialog.signalingState === SignalingState.HaveLocalOffer) {\n                        earlyDialog.signalingStateTransition(message);\n                    }\n                    // Pass response to delegate.\n                    const session = earlyDialog;\n                    if (this.delegate && this.delegate.onProgress) {\n                        this.delegate.onProgress({\n                            message,\n                            session,\n                            prack: (options) => {\n                                const outgoingPrackRequest = session.prack(undefined, options);\n                                return outgoingPrackRequest;\n                            }\n                        });\n                    }\n                }\n                return;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Multiple 2xx responses may arrive at the UAC for a single INVITE\n                // request due to a forking proxy.  Each response is distinguished by\n                // the tag parameter in the To header field, and each represents a\n                // distinct dialog, with a distinct dialog identifier.\n                //\n                // If the dialog identifier in the 2xx response matches the dialog\n                // identifier of an existing dialog, the dialog MUST be transitioned to\n                // the \"confirmed\" state, and the route set for the dialog MUST be\n                // recomputed based on the 2xx response using the procedures of Section\n                // 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n                // constructed using the procedures of Section 12.1.2.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                {\n                    // Dialogs are created through the generation of non-failure responses\n                    // to requests with specific methods.  Within this specification, only\n                    // 2xx and 101-199 responses with a To tag, where the request was\n                    // INVITE, will establish a dialog.  A dialog established by a non-final\n                    // response to a request is in the \"early\" state and it is called an\n                    // early dialog.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1\n                    // Final without to tag, malformed response.\n                    if (!message.toTag) {\n                        this.logger.error(\"2xx INVITE response received without a to tag, dropping.\");\n                        return;\n                    }\n                    // When a UAS responds to a request with a response that establishes a\n                    // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n                    // header field values from the request into the response (including the\n                    // URIs, URI parameters, and any Record-Route header field parameters,\n                    // whether they are known or unknown to the UAS) and MUST maintain the\n                    // order of those values.  The UAS MUST add a Contact header field to\n                    // the response.\n                    // https://tools.ietf.org/html/rfc3261#section-12.1.1\n                    // Final without Contact header field, malformed response.\n                    const contact = message.parseHeader(\"contact\");\n                    if (!contact) {\n                        this.logger.error(\"2xx INVITE response received without a Contact header field, dropping.\");\n                        return;\n                    }\n                    // Compute dialog state.\n                    const dialogState = Dialog.initialDialogStateForUserAgentClient(this.message, message);\n                    // NOTE: Currently our transaction layer is caching the 2xx ACKs and\n                    // handling retransmissions of the ACK which is an approach which is\n                    // not to spec. In any event, this block is intended to provide a to\n                    // spec implementation of ACK retransmissions, but it should not be\n                    // hit currently.\n                    let dialog = this.confirmedDialogs.get(dialogState.id);\n                    if (dialog) {\n                        // Once the ACK has been constructed, the procedures of [4] are used to\n                        // determine the destination address, port and transport.  However, the\n                        // request is passed to the transport layer directly for transmission,\n                        // rather than a client transaction.  This is because the UAC core\n                        // handles retransmissions of the ACK, not the transaction layer.  The\n                        // ACK MUST be passed to the client transport every time a\n                        // retransmission of the 2xx final response that triggered the ACK\n                        // arrives.\n                        // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                        const outgoingAckRequest = this.confirmedDialogAcks.get(dialogState.id);\n                        if (outgoingAckRequest) {\n                            const transaction = this.transaction;\n                            if (!(transaction instanceof InviteClientTransaction)) {\n                                throw new Error(\"Client transaction not instance of InviteClientTransaction.\");\n                            }\n                            transaction.ackResponse(outgoingAckRequest.message);\n                        }\n                        else {\n                            // If still waiting for an ACK, drop the retransmission of the 2xx final response.\n                        }\n                        return;\n                    }\n                    // If the dialog identifier in the 2xx response matches the dialog\n                    // identifier of an existing dialog, the dialog MUST be transitioned to\n                    // the \"confirmed\" state, and the route set for the dialog MUST be\n                    // recomputed based on the 2xx response using the procedures of Section\n                    // 12.2.1.2. Otherwise, a new dialog in the \"confirmed\" state MUST be\n                    // constructed using the procedures of Section 12.1.2.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    dialog = this.earlyDialogs.get(dialogState.id);\n                    if (dialog) {\n                        dialog.confirm();\n                        dialog.recomputeRouteSet(message);\n                        this.earlyDialogs.delete(dialog.id);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    }\n                    else {\n                        const transaction = this.transaction;\n                        if (!(transaction instanceof InviteClientTransaction)) {\n                            throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                        }\n                        dialog = new SessionDialog(transaction, this.core, dialogState);\n                        this.confirmedDialogs.set(dialog.id, dialog);\n                    }\n                    // If the initial offer is in an INVITE, the answer MUST be in a\n                    // reliable non-failure message from UAS back to UAC which is\n                    // correlated to that INVITE.  For this specification, that is\n                    // only the final 2xx response to that INVITE.  That same exact\n                    // answer MAY also be placed in any provisional responses sent\n                    // prior to the answer.  The UAC MUST treat the first session\n                    // description it receives as the answer, and MUST ignore any\n                    // session descriptions in subsequent responses to the initial\n                    // INVITE.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    if (dialog.signalingState === SignalingState.Initial ||\n                        dialog.signalingState === SignalingState.HaveLocalOffer) {\n                        dialog.signalingStateTransition(message);\n                    }\n                    // Session Initiated! :)\n                    const session = dialog;\n                    // The UAC core MUST generate an ACK request for each 2xx received from\n                    // the transaction layer.  The header fields of the ACK are constructed\n                    // in the same way as for any request sent within a dialog (see Section\n                    // 12) with the exception of the CSeq and the header fields related to\n                    // authentication.  The sequence number of the CSeq header field MUST be\n                    // the same as the INVITE being acknowledged, but the CSeq method MUST\n                    // be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n                    // the 2xx contains an offer (based on the rules above), the ACK MUST\n                    // carry an answer in its body.  If the offer in the 2xx response is not\n                    // acceptable, the UAC core MUST generate a valid answer in the ACK and\n                    // then send a BYE immediately.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n                    if (this.delegate && this.delegate.onAccept) {\n                        this.delegate.onAccept({\n                            message,\n                            session,\n                            ack: (options) => {\n                                const outgoingAckRequest = session.ack(options);\n                                this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                                return outgoingAckRequest;\n                            }\n                        });\n                    }\n                    else {\n                        const outgoingAckRequest = session.ack();\n                        this.confirmedDialogAcks.set(session.id, outgoingAckRequest);\n                    }\n                }\n                return;\n            case /^3[0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog) => earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A 3xx response may contain one or more Contact header field values\n                // providing new addresses where the callee might be reachable.\n                // Depending on the status code of the 3xx response (see Section 21.3),\n                // the UAC MAY choose to try those new addresses.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.2\n                if (this.delegate && this.delegate.onRedirect) {\n                    this.delegate.onRedirect({ message });\n                }\n                return;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                // 12.3 Termination of a Dialog\n                //\n                // Independent of the method, if a request outside of a dialog generates\n                // a non-2xx final response, any early dialogs created through\n                // provisional responses to that request are terminated.  The mechanism\n                // for terminating confirmed dialogs is method specific.  In this\n                // specification, the BYE method terminates a session and the dialog\n                // associated with it.  See Section 15 for details.\n                // https://tools.ietf.org/html/rfc3261#section-12.3\n                // All early dialogs are considered terminated upon reception of the\n                // non-2xx final response.\n                //\n                // After having received the non-2xx final response the UAC core\n                // considers the INVITE transaction completed.  The INVITE client\n                // transaction handles the generation of ACKs for the response (see\n                // Section 17).\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                this.earlyDialogs.forEach((earlyDialog) => earlyDialog.dispose());\n                this.earlyDialogs.clear();\n                // A single non-2xx final response may be received for the INVITE.  4xx,\n                // 5xx and 6xx responses may contain a Contact header field value\n                // indicating the location where additional information about the error\n                // can be found.  Subsequent final responses (which would only arrive\n                // under error conditions) MUST be ignored.\n                // https://tools.ietf.org/html/rfc3261#section-13.2.2.3\n                if (this.delegate && this.delegate.onReject) {\n                    this.delegate.onReject({ message });\n                }\n                return;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n        throw new Error(`Executing what should be an unreachable code path receiving ${statusCode} response.`);\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { C } from \"../messages/methods/constants.js\";\n/**\n * Dialog.\n * @remarks\n * A key concept for a user agent is that of a dialog.  A dialog\n * represents a peer-to-peer SIP relationship between two user agents\n * that persists for some time.  The dialog facilitates sequencing of\n * messages between the user agents and proper routing of requests\n * between both of them.  The dialog represents a context in which to\n * interpret SIP messages.\n * https://tools.ietf.org/html/rfc3261#section-12\n * @public\n */\nexport class Dialog {\n    /**\n     * Dialog constructor.\n     * @param core - User agent core.\n     * @param dialogState - Initial dialog state.\n     */\n    constructor(core, dialogState) {\n        this.core = core;\n        this.dialogState = dialogState;\n        this.core.dialogs.set(this.id, this);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */\n    static initialDialogStateForUserAgentClient(outgoingRequestMessage, incomingResponseMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingResponseMessage.getHeaders(\"record-route\").reverse();\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const contact = incomingResponseMessage.parseHeader(\"contact\");\n        if (!contact) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n        }\n        if (!(contact instanceof NameAddrHeader)) {\n            throw new Error(\"Contact not instance of NameAddrHeader.\");\n        }\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingRequestMessage.callId;\n        const localTag = outgoingRequestMessage.fromTag;\n        const remoteTag = incomingResponseMessage.toTag;\n        if (!callId) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Call id undefined.\");\n        }\n        if (!localTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From tag undefined.\");\n        }\n        if (!remoteTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        }\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingRequestMessage.from) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From undefined.\");\n        }\n        if (!outgoingRequestMessage.to) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To undefined.\");\n        }\n        const localURI = outgoingRequestMessage.from.uri;\n        const remoteURI = outgoingRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        if (!incomingResponseMessage.statusCode) {\n            throw new Error(\"Incoming response status code undefined.\");\n        }\n        const early = incomingResponseMessage.statusCode < 200 ? true : false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early,\n            callId,\n            localTag,\n            remoteTag,\n            localSequenceNumber,\n            remoteSequenceNumber,\n            localURI,\n            remoteURI,\n            remoteTarget,\n            routeSet,\n            secure\n        };\n        return dialogState;\n    }\n    /**\n     * The UAS then constructs the state of the dialog.  This state MUST be\n     * maintained for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.1\n     * @param incomingRequestMessage - Incoming request message creating dialog.\n     * @param toTag - Tag in the To field in the response to the incoming request.\n     */\n    static initialDialogStateForUserAgentServer(incomingRequestMessage, toTag, early = false) {\n        // If the request arrived over TLS, and the Request-URI contained a SIPS\n        // URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the request, taken in order and preserving all URI\n        // parameters.  If no Record-Route header field is present in the\n        // request, the route set MUST be set to the empty set.  This route set,\n        // even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const routeSet = incomingRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingRequestMessage.parseHeader(\"contact\");\n        if (!contact) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n        }\n        if (!(contact instanceof NameAddrHeader)) {\n            throw new Error(\"Contact not instance of NameAddrHeader.\");\n        }\n        const remoteTarget = contact.uri;\n        // The remote sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The local sequence\n        // number MUST be empty.  The call identifier component of the dialog ID\n        // MUST be set to the value of the Call-ID in the request.  The local\n        // tag component of the dialog ID MUST be set to the tag in the To field\n        // in the response to the request (which always includes a tag), and the\n        // remote tag component of the dialog ID MUST be set to the tag from the\n        // From field in the request.  A UAS MUST be prepared to receive a\n        // request without a tag in the From field, in which case the tag is\n        // considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate From tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteSequenceNumber = incomingRequestMessage.cseq;\n        const localSequenceNumber = undefined;\n        const callId = incomingRequestMessage.callId;\n        const localTag = toTag;\n        const remoteTag = incomingRequestMessage.fromTag;\n        // The remote URI MUST be set to the URI in the From field, and the\n        // local URI MUST be set to the URI in the To field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const remoteURI = incomingRequestMessage.from.uri;\n        const localURI = incomingRequestMessage.to.uri;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early,\n            callId,\n            localTag,\n            remoteTag,\n            localSequenceNumber,\n            remoteSequenceNumber,\n            localURI,\n            remoteURI,\n            remoteTarget,\n            routeSet,\n            secure\n        };\n        return dialogState;\n    }\n    /** Destructor. */\n    dispose() {\n        this.core.dialogs.delete(this.id);\n    }\n    /**\n     * A dialog is identified at each UA with a dialog ID, which consists of\n     * a Call-ID value, a local tag and a remote tag.  The dialog ID at each\n     * UA involved in the dialog is not the same.  Specifically, the local\n     * tag at one UA is identical to the remote tag at the peer UA.  The\n     * tags are opaque tokens that facilitate the generation of unique\n     * dialog IDs.\n     * https://tools.ietf.org/html/rfc3261#section-12\n     */\n    get id() {\n        return this.dialogState.id;\n    }\n    /**\n     * A dialog can also be in the \"early\" state, which occurs when it is\n     * created with a provisional response, and then it transition to the\n     * \"confirmed\" state when a 2xx final response received or is sent.\n     *\n     * Note: RFC 3261 is concise on when a dialog is \"confirmed\", but it\n     * can be a point of confusion if an INVITE dialog is \"confirmed\" after\n     * a 2xx is sent or after receiving the ACK for the 2xx response.\n     * With careful reading it can be inferred a dialog is always is\n     * \"confirmed\" when the 2xx is sent (regardless of type of dialog).\n     * However a INVITE dialog does have additional considerations\n     * when it is confirmed but an ACK has not yet been received (in\n     * particular with regard to a callee sending BYE requests).\n     */\n    get early() {\n        return this.dialogState.early;\n    }\n    /** Call identifier component of the dialog id. */\n    get callId() {\n        return this.dialogState.callId;\n    }\n    /** Local tag component of the dialog id. */\n    get localTag() {\n        return this.dialogState.localTag;\n    }\n    /** Remote tag component of the dialog id. */\n    get remoteTag() {\n        return this.dialogState.remoteTag;\n    }\n    /** Local sequence number (used to order requests from the UA to its peer). */\n    get localSequenceNumber() {\n        return this.dialogState.localSequenceNumber;\n    }\n    /** Remote sequence number (used to order requests from its peer to the UA). */\n    get remoteSequenceNumber() {\n        return this.dialogState.remoteSequenceNumber;\n    }\n    /** Local URI. */\n    get localURI() {\n        return this.dialogState.localURI;\n    }\n    /** Remote URI. */\n    get remoteURI() {\n        return this.dialogState.remoteURI;\n    }\n    /** Remote target. */\n    get remoteTarget() {\n        return this.dialogState.remoteTarget;\n    }\n    /**\n     * Route set, which is an ordered list of URIs. The route set is the\n     * list of servers that need to be traversed to send a request to the peer.\n     */\n    get routeSet() {\n        return this.dialogState.routeSet;\n    }\n    /**\n     * If the request was sent over TLS, and the Request-URI contained\n     * a SIPS URI, the \"secure\" flag is set to true. *NOT IMPLEMENTED*\n     */\n    get secure() {\n        return this.dialogState.secure;\n    }\n    /** The user agent core servicing this dialog. */\n    get userAgentCore() {\n        return this.core;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */\n    confirm() {\n        this.dialogState.early = false;\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     *\n     *    Note that some requests, such as INVITEs, affect several pieces of\n     *    state.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */\n    receiveRequest(message) {\n        // ACK guard.\n        // By convention, the handling of ACKs is the responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, ACKs have same sequence number as the associated INVITE.\n        if (message.method === C.ACK) {\n            return;\n        }\n        // If the remote sequence number was not empty, but the sequence number\n        // of the request is lower than the remote sequence number, the request\n        // is out of order and MUST be rejected with a 500 (Server Internal\n        // Error) response.  If the remote sequence number was not empty, and\n        // the sequence number of the request is greater than the remote\n        // sequence number, the request is in order.  It is possible for the\n        // CSeq sequence number to be higher than the remote sequence number by\n        // more than one.  This is not an error condition, and a UAS SHOULD be\n        // prepared to receive and process requests with CSeq values more than\n        // one higher than the previous received request.  The UAS MUST then set\n        // the remote sequence number to the value of the sequence number in the\n        // CSeq header field value in the request.\n        //\n        //    If a proxy challenges a request generated by the UAC, the UAC has\n        //    to resubmit the request with credentials.  The resubmitted request\n        //    will have a new CSeq number.  The UAS will never see the first\n        //    request, and thus, it will notice a gap in the CSeq number space.\n        //    Such a gap does not represent any error condition.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (this.remoteSequenceNumber) {\n            if (message.cseq <= this.remoteSequenceNumber) {\n                throw new Error(\"Out of sequence in dialog request. Did you forget to call sequenceGuard()?\");\n            }\n            this.dialogState.remoteSequenceNumber = message.cseq;\n        }\n        // If the remote sequence number is empty, it MUST be set to the value\n        // of the sequence number in the CSeq header field value in the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.remoteSequenceNumber) {\n            this.dialogState.remoteSequenceNumber = message.cseq;\n        }\n        // When a UAS receives a target refresh request, it MUST replace the\n        // dialog's remote target URI with the URI from the Contact header field\n        // in that request, if present.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        // Note: \"target refresh request\" processing delegated to sub-class.\n    }\n    /**\n     * If the dialog identifier in the 2xx response matches the dialog\n     * identifier of an existing dialog, the dialog MUST be transitioned to\n     * the \"confirmed\" state, and the route set for the dialog MUST be\n     * recomputed based on the 2xx response using the procedures of Section\n     * 12.2.1.2.  Otherwise, a new dialog in the \"confirmed\" state MUST be\n     * constructed using the procedures of Section 12.1.2.\n     *\n     * Note that the only piece of state that is recomputed is the route\n     * set.  Other pieces of state such as the highest sequence numbers\n     * (remote and local) sent within the dialog are not recomputed.  The\n     * route set only is recomputed for backwards compatibility.  RFC\n     * 2543 did not mandate mirroring of the Record-Route header field in\n     * a 1xx, only 2xx.  However, we cannot update the entire state of\n     * the dialog, since mid-dialog requests may have been sent within\n     * the early dialog, modifying the sequence numbers, for example.\n     *\n     *  https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     */\n    recomputeRouteSet(message) {\n        this.dialogState.routeSet = message.getHeaders(\"record-route\").reverse();\n    }\n    /**\n     * A request within a dialog is constructed by using many of the\n     * components of the state stored as part of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n     * @param method - Outgoing request method.\n     */\n    createOutgoingRequestMessage(method, options) {\n        // The URI in the To field of the request MUST be set to the remote URI\n        // from the dialog state.  The tag in the To header field of the request\n        // MUST be set to the remote tag of the dialog ID.  The From URI of the\n        // request MUST be set to the local URI from the dialog state.  The tag\n        // in the From header field of the request MUST be set to the local tag\n        // of the dialog ID.  If the value of the remote or local tags is null,\n        // the tag parameter MUST be omitted from the To or From header fields,\n        // respectively.\n        //\n        //    Usage of the URI from the To and From fields in the original\n        //    request within subsequent requests is done for backwards\n        //    compatibility with RFC 2543, which used the URI for dialog\n        //    identification.  In this specification, only the tags are used for\n        //    dialog identification.  It is expected that mandatory reflection\n        //    of the original To and From URI in mid-dialog requests will be\n        //    deprecated in a subsequent revision of this specification.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const toUri = this.remoteURI;\n        const toTag = this.remoteTag;\n        const fromUri = this.localURI;\n        const fromTag = this.localTag;\n        // The Call-ID of the request MUST be set to the Call-ID of the dialog.\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.  If the local sequence number is\n        // empty, an initial value MUST be chosen using the guidelines of\n        // Section 8.1.1.5.  The method field in the CSeq header field value\n        // MUST match the method of the request.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        const callId = this.callId;\n        let cseq;\n        if (options && options.cseq) {\n            cseq = options.cseq;\n        }\n        else if (!this.dialogState.localSequenceNumber) {\n            cseq = this.dialogState.localSequenceNumber = 1; // https://tools.ietf.org/html/rfc3261#section-8.1.1.5\n        }\n        else {\n            cseq = this.dialogState.localSequenceNumber += 1;\n        }\n        // The UAC uses the remote target and route set to build the Request-URI\n        // and Route header field of the request.\n        //\n        // If the route set is empty, the UAC MUST place the remote target URI\n        // into the Request-URI.  The UAC MUST NOT add a Route header field to\n        // the request.\n        //\n        // If the route set is not empty, and the first URI in the route set\n        // contains the lr parameter (see Section 19.1.1), the UAC MUST place\n        // the remote target URI into the Request-URI and MUST include a Route\n        // header field containing the route set values in order, including all\n        // parameters.\n        //\n        // If the route set is not empty, and its first URI does not contain the\n        // lr parameter, the UAC MUST place the first URI from the route set\n        // into the Request-URI, stripping any parameters that are not allowed\n        // in a Request-URI.  The UAC MUST add a Route header field containing\n        // the remainder of the route set values in order, including all\n        // parameters.  The UAC MUST then place the remote target URI into the\n        // Route header field as the last value.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        // The lr parameter, when present, indicates that the element\n        // responsible for this resource implements the routing mechanisms\n        // specified in this document.  This parameter will be used in the\n        // URIs proxies place into Record-Route header field values, and\n        // may appear in the URIs in a pre-existing route set.\n        //\n        // This parameter is used to achieve backwards compatibility with\n        // systems implementing the strict-routing mechanisms of RFC 2543\n        // and the rfc2543bis drafts up to bis-05.  An element preparing\n        // to send a request based on a URI not containing this parameter\n        // can assume the receiving element implements strict-routing and\n        // reformat the message to preserve the information in the\n        // Request-URI.\n        // https://tools.ietf.org/html/rfc3261#section-19.1.1\n        // NOTE: Not backwards compatible with RFC 2543 (no support for strict-routing).\n        const ruri = this.remoteTarget;\n        const routeSet = this.routeSet;\n        const extraHeaders = options && options.extraHeaders;\n        const body = options && options.body;\n        // The relative order of header fields with different field names is not\n        // significant.  However, it is RECOMMENDED that header fields which are\n        // needed for proxy processing (Via, Route, Record-Route, Proxy-Require,\n        // Max-Forwards, and Proxy-Authorization, for example) appear towards\n        // the top of the message to facilitate rapid parsing.\n        // https://tools.ietf.org/html/rfc3261#section-7.3.1\n        const message = this.userAgentCore.makeOutgoingRequestMessage(method, ruri, fromUri, toUri, {\n            callId,\n            cseq,\n            fromTag,\n            toTag,\n            routeSet\n        }, extraHeaders, body);\n        return message;\n    }\n    /**\n     * Increment the local sequence number by one.\n     * It feels like this should be protected, but the current authentication handling currently\n     * needs this to keep the dialog in sync when \"auto re-sends\" request messages.\n     * @internal\n     */\n    incrementLocalSequenceNumber() {\n        if (!this.dialogState.localSequenceNumber) {\n            throw new Error(\"Local sequence number undefined.\");\n        }\n        this.dialogState.localSequenceNumber += 1;\n    }\n    /**\n     * If the remote sequence number was not empty, but the sequence number\n     * of the request is lower than the remote sequence number, the request\n     * is out of order and MUST be rejected with a 500 (Server Internal\n     * Error) response.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param request - Incoming request to guard.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise a 500 Server Internal Error was stateless sent and request processing must stop.\n     */\n    sequenceGuard(message) {\n        // ACK guard.\n        // By convention, handling of unexpected ACKs is responsibility\n        // the particular dialog implementation. For example, see SessionDialog.\n        // Furthermore, we cannot reply to an \"out of sequence\" ACK.\n        if (message.method === C.ACK) {\n            return true;\n        }\n        // Note: We are rejecting on \"less than or equal to\" the remote\n        // sequence number (excepting ACK whose numbers equal the requests\n        // being acknowledged or cancelled), which is the correct thing to\n        // do in our case. The only time a request with the same sequence number\n        // will show up here if is a) it is a very late retransmission of a\n        // request we already handled or b) it is a different request with the\n        // same sequence number which would be violation of the standard.\n        // Request retransmissions are absorbed by the transaction layer,\n        // so any request with a duplicate sequence number getting here\n        // would have to be a retransmission after the transaction terminated\n        // or a broken request (with unique via branch value).\n        // Requests within a dialog MUST contain strictly monotonically\n        // increasing and contiguous CSeq sequence numbers (increasing-by-one)\n        // in each direction (excepting ACK and CANCEL of course, whose numbers\n        // equal the requests being acknowledged or cancelled).  Therefore, if\n        // the local sequence number is not empty, the value of the local\n        // sequence number MUST be incremented by one, and this value MUST be\n        // placed into the CSeq header field.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.1.1\n        if (this.remoteSequenceNumber && message.cseq <= this.remoteSequenceNumber) {\n            this.core.replyStateless(message, { statusCode: 500 });\n            return false;\n        }\n        return true;\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { getBody, isBody } from \"../messages/body.js\";\nimport { C } from \"../messages/methods/constants.js\";\nimport { IncomingRequestMessage } from \"../messages/incoming-request-message.js\";\nimport { IncomingResponseMessage } from \"../messages/incoming-response-message.js\";\nimport { OutgoingRequestMessage } from \"../messages/outgoing-request-message.js\";\nimport { SessionState } from \"../session/session.js\";\nimport { SignalingState } from \"../session/session.js\";\nimport { Timers } from \"../timers.js\";\nimport { InviteClientTransaction } from \"../transactions/invite-client-transaction.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\nimport { ByeUserAgentClient } from \"../user-agents/bye-user-agent-client.js\";\nimport { ByeUserAgentServer } from \"../user-agents/bye-user-agent-server.js\";\nimport { InfoUserAgentClient } from \"../user-agents/info-user-agent-client.js\";\nimport { InfoUserAgentServer } from \"../user-agents/info-user-agent-server.js\";\nimport { MessageUserAgentClient } from \"../user-agents/message-user-agent-client.js\";\nimport { MessageUserAgentServer } from \"../user-agents/message-user-agent-server.js\";\nimport { NotifyUserAgentClient } from \"../user-agents/notify-user-agent-client.js\";\nimport { NotifyUserAgentServer } from \"../user-agents/notify-user-agent-server.js\";\nimport { PrackUserAgentClient } from \"../user-agents/prack-user-agent-client.js\";\nimport { PrackUserAgentServer } from \"../user-agents/prack-user-agent-server.js\";\nimport { ReInviteUserAgentClient } from \"../user-agents/re-invite-user-agent-client.js\";\nimport { ReInviteUserAgentServer } from \"../user-agents/re-invite-user-agent-server.js\";\nimport { ReferUserAgentClient } from \"../user-agents/refer-user-agent-client.js\";\nimport { ReferUserAgentServer } from \"../user-agents/refer-user-agent-server.js\";\nimport { Dialog } from \"./dialog.js\";\n/**\n * Session Dialog.\n * @public\n */\nexport class SessionDialog extends Dialog {\n    constructor(initialTransaction, core, state, delegate) {\n        super(core, state);\n        this.initialTransaction = initialTransaction;\n        /** The state of the offer/answer exchange. */\n        this._signalingState = SignalingState.Initial;\n        /** True if waiting for an ACK to the initial transaction 2xx (UAS only). */\n        this.ackWait = false;\n        /** True if processing an ACK to the initial transaction 2xx (UAS only). */\n        this.ackProcessing = false;\n        this.delegate = delegate;\n        if (initialTransaction instanceof InviteServerTransaction) {\n            // If we're created by an invite server transaction, we're\n            // going to be waiting for an ACK if are to be confirmed.\n            this.ackWait = true;\n        }\n        // If we're confirmed upon creation start the retransmitting whatever\n        // the 2xx final response was that confirmed us into existence.\n        if (!this.early) {\n            this.start2xxRetransmissionTimer();\n        }\n        this.signalingStateTransition(initialTransaction.request);\n        this.logger = core.loggerFactory.getLogger(\"sip.invite-dialog\");\n        this.logger.log(`INVITE dialog ${this.id} constructed`);\n    }\n    dispose() {\n        super.dispose();\n        this._signalingState = SignalingState.Closed;\n        this._offer = undefined;\n        this._answer = undefined;\n        if (this.invite2xxTimer) {\n            clearTimeout(this.invite2xxTimer);\n            this.invite2xxTimer = undefined;\n        }\n        // The UAS MUST still respond to any pending requests received for that\n        // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n        // be generated to those pending requests.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.2\n        // TODO:\n        // this.userAgentServers.forEach((uas) => uas.reply(487));\n        this.logger.log(`INVITE dialog ${this.id} destroyed`);\n    }\n    // FIXME: Need real state machine\n    get sessionState() {\n        if (this.early) {\n            return SessionState.Early;\n        }\n        else if (this.ackWait) {\n            return SessionState.AckWait;\n        }\n        else if (this._signalingState === SignalingState.Closed) {\n            return SessionState.Terminated;\n        }\n        else {\n            return SessionState.Confirmed;\n        }\n    }\n    /** The state of the offer/answer exchange. */\n    get signalingState() {\n        return this._signalingState;\n    }\n    /** The current offer. Undefined unless signaling state HaveLocalOffer, HaveRemoteOffer, of Stable. */\n    get offer() {\n        return this._offer;\n    }\n    /** The current answer. Undefined unless signaling state Stable. */\n    get answer() {\n        return this._answer;\n    }\n    /** Confirm the dialog. Only matters if dialog is currently early. */\n    confirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.early) {\n            this.start2xxRetransmissionTimer();\n        }\n        super.confirm();\n    }\n    /** Re-confirm the dialog. Only matters if handling re-INVITE request. */\n    reConfirm() {\n        // When we're confirmed start the retransmitting whatever\n        // the 2xx final response that may have confirmed us.\n        if (this.reinviteUserAgentServer) {\n            this.startReInvite2xxRetransmissionTimer();\n        }\n    }\n    /**\n     * The UAC core MUST generate an ACK request for each 2xx received from\n     * the transaction layer.  The header fields of the ACK are constructed\n     * in the same way as for any request sent within a dialog (see Section\n     * 12) with the exception of the CSeq and the header fields related to\n     * authentication.  The sequence number of the CSeq header field MUST be\n     * the same as the INVITE being acknowledged, but the CSeq method MUST\n     * be ACK.  The ACK MUST contain the same credentials as the INVITE.  If\n     * the 2xx contains an offer (based on the rules above), the ACK MUST\n     * carry an answer in its body.  If the offer in the 2xx response is not\n     * acceptable, the UAC core MUST generate a valid answer in the ACK and\n     * then send a BYE immediately.\n     * https://tools.ietf.org/html/rfc3261#section-13.2.2.4\n     * @param options - ACK options bucket.\n     */\n    ack(options = {}) {\n        this.logger.log(`INVITE dialog ${this.id} sending ACK request`);\n        let transaction;\n        if (this.reinviteUserAgentClient) {\n            // We're sending ACK for a re-INVITE\n            if (!(this.reinviteUserAgentClient.transaction instanceof InviteClientTransaction)) {\n                throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            }\n            transaction = this.reinviteUserAgentClient.transaction;\n            this.reinviteUserAgentClient = undefined;\n        }\n        else {\n            // We're sending ACK for the initial INVITE\n            if (!(this.initialTransaction instanceof InviteClientTransaction)) {\n                throw new Error(\"Initial transaction not instance of InviteClientTransaction.\");\n            }\n            transaction = this.initialTransaction;\n        }\n        const message = this.createOutgoingRequestMessage(C.ACK, {\n            cseq: transaction.request.cseq,\n            extraHeaders: options.extraHeaders,\n            body: options.body\n        });\n        transaction.ackResponse(message); // See InviteClientTransaction for details.\n        this.signalingStateTransition(message);\n        return { message };\n    }\n    /**\n     * Terminating a Session\n     *\n     * This section describes the procedures for terminating a session\n     * established by SIP.  The state of the session and the state of the\n     * dialog are very closely related.  When a session is initiated with an\n     * INVITE, each 1xx or 2xx response from a distinct UAS creates a\n     * dialog, and if that response completes the offer/answer exchange, it\n     * also creates a session.  As a result, each session is \"associated\"\n     * with a single dialog - the one which resulted in its creation.  If an\n     * initial INVITE generates a non-2xx final response, that terminates\n     * all sessions (if any) and all dialogs (if any) that were created\n     * through responses to the request.  By virtue of completing the\n     * transaction, a non-2xx final response also prevents further sessions\n     * from being created as a result of the INVITE.  The BYE request is\n     * used to terminate a specific session or attempted session.  In this\n     * case, the specific session is the one with the peer UA on the other\n     * side of the dialog.  When a BYE is received on a dialog, any session\n     * associated with that dialog SHOULD terminate.  A UA MUST NOT send a\n     * BYE outside of a dialog.  The caller's UA MAY send a BYE for either\n     * confirmed or early dialogs, and the callee's UA MAY send a BYE on\n     * confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n     *\n     * However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n     * until it has received an ACK for its 2xx response or until the server\n     * transaction times out.  If no SIP extensions have defined other\n     * application layer states associated with the dialog, the BYE also\n     * terminates the dialog.\n     *\n     * https://tools.ietf.org/html/rfc3261#section-15\n     * FIXME: Make these proper Exceptions...\n     * @param options - BYE options bucket.\n     * @returns\n     * Throws `Error` if callee's UA attempts a BYE on an early dialog.\n     * Throws `Error` if callee's UA attempts a BYE on a confirmed dialog\n     *                while it's waiting on the ACK for its 2xx response.\n     */\n    bye(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending BYE request`);\n        // The caller's UA MAY send a BYE for either\n        // confirmed or early dialogs, and the callee's UA MAY send a BYE on\n        // confirmed dialogs, but MUST NOT send a BYE on early dialogs.\n        //\n        // However, the callee's UA MUST NOT send a BYE on a confirmed dialog\n        // until it has received an ACK for its 2xx response or until the server\n        // transaction times out.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (this.initialTransaction instanceof InviteServerTransaction) {\n            if (this.early) {\n                // FIXME: TODO: This should throw a proper exception.\n                throw new Error(\"UAS MUST NOT send a BYE on early dialogs.\");\n            }\n            if (this.ackWait && this.initialTransaction.state !== TransactionState.Terminated) {\n                // FIXME: TODO: This should throw a proper exception.\n                throw new Error(\"UAS MUST NOT send a BYE on a confirmed dialog \" +\n                    \"until it has received an ACK for its 2xx response \" +\n                    \"or until the server transaction times out.\");\n            }\n        }\n        // A BYE request is constructed as would any other request within a\n        // dialog, as described in Section 12.\n        //\n        // Once the BYE is constructed, the UAC core creates a new non-INVITE\n        // client transaction, and passes it the BYE request.  The UAC MUST\n        // consider the session terminated (and therefore stop sending or\n        // listening for media) as soon as the BYE request is passed to the\n        // client transaction.  If the response for the BYE is a 481\n        // (Call/Transaction Does Not Exist) or a 408 (Request Timeout) or no\n        // response at all is received for the BYE (that is, a timeout is\n        // returned by the client transaction), the UAC MUST consider the\n        // session and the dialog terminated.\n        // https://tools.ietf.org/html/rfc3261#section-15.1.1\n        return new ByeUserAgentClient(this, delegate, options);\n    }\n    /**\n     * An INFO request can be associated with an Info Package (see\n     * Section 5), or associated with a legacy INFO usage (see Section 2).\n     *\n     * The construction of the INFO request is the same as any other\n     * non-target refresh request within an existing invite dialog usage as\n     * described in Section 12.2 of RFC 3261.\n     * https://tools.ietf.org/html/rfc6086#section-4.2.1\n     * @param options - Options bucket.\n     */\n    info(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INFO request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        return new InfoUserAgentClient(this, delegate, options);\n    }\n    /**\n     * Modifying an Existing Session\n     *\n     * A successful INVITE request (see Section 13) establishes both a\n     * dialog between two user agents and a session using the offer-answer\n     * model.  Section 12 explains how to modify an existing dialog using a\n     * target refresh request (for example, changing the remote target URI\n     * of the dialog).  This section describes how to modify the actual\n     * session.  This modification can involve changing addresses or ports,\n     * adding a media stream, deleting a media stream, and so on.  This is\n     * accomplished by sending a new INVITE request within the same dialog\n     * that established the session.  An INVITE request sent within an\n     * existing dialog is known as a re-INVITE.\n     *\n     *    Note that a single re-INVITE can modify the dialog and the\n     *    parameters of the session at the same time.\n     *\n     * Either the caller or callee can modify an existing session.\n     * https://tools.ietf.org/html/rfc3261#section-14\n     * @param options - Options bucket\n     */\n    invite(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending INVITE request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        // Note that a UAC MUST NOT initiate a new INVITE transaction within a\n        // dialog while another INVITE transaction is in progress in either\n        // direction.\n        //\n        //    1. If there is an ongoing INVITE client transaction, the TU MUST\n        //       wait until the transaction reaches the completed or terminated\n        //       state before initiating the new INVITE.\n        //\n        //    2. If there is an ongoing INVITE server transaction, the TU MUST\n        //       wait until the transaction reaches the confirmed or terminated\n        //       state before initiating the new INVITE.\n        //\n        // However, a UA MAY initiate a regular transaction while an INVITE\n        // transaction is in progress.  A UA MAY also initiate an INVITE\n        // transaction while a regular transaction is in progress.\n        // https://tools.ietf.org/html/rfc3261#section-14.1\n        if (this.reinviteUserAgentClient) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"There is an ongoing re-INVITE client transaction.\");\n        }\n        if (this.reinviteUserAgentServer) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"There is an ongoing re-INVITE server transaction.\");\n        }\n        return new ReInviteUserAgentClient(this, delegate, options);\n    }\n    /**\n     * A UAC MAY associate a MESSAGE request with an existing dialog.  If a\n     * MESSAGE request is sent within a dialog, it is \"associated\" with any\n     * media session or sessions associated with that dialog.\n     * https://tools.ietf.org/html/rfc3428#section-4\n     * @param options - Options bucket.\n     */\n    message(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending MESSAGE request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        const message = this.createOutgoingRequestMessage(C.MESSAGE, options);\n        return new MessageUserAgentClient(this.core, message, delegate);\n    }\n    /**\n     * The NOTIFY mechanism defined in [2] MUST be used to inform the agent\n     * sending the REFER of the status of the reference.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.4\n     * @param options - Options bucket.\n     */\n    notify(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending NOTIFY request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        return new NotifyUserAgentClient(this, delegate, options);\n    }\n    /**\n     * Assuming the response is to be transmitted reliably, the UAC MUST\n     * create a new request with method PRACK.  This request is sent within\n     * the dialog associated with the provisional response (indeed, the\n     * provisional response may have created the dialog).  PRACK requests\n     * MAY contain bodies, which are interpreted according to their type and\n     * disposition.\n     * https://tools.ietf.org/html/rfc3262#section-4\n     * @param options - Options bucket.\n     */\n    prack(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending PRACK request`);\n        return new PrackUserAgentClient(this, delegate, options);\n    }\n    /**\n     * REFER is a SIP request and is constructed as defined in [1].  A REFER\n     * request MUST contain exactly one Refer-To header field value.\n     * https://tools.ietf.org/html/rfc3515#section-2.4.1\n     * @param options - Options bucket.\n     */\n    refer(delegate, options) {\n        this.logger.log(`INVITE dialog ${this.id} sending REFER request`);\n        if (this.early) {\n            // FIXME: TODO: This should throw a proper exception.\n            throw new Error(\"Dialog not confirmed.\");\n        }\n        // FIXME: TODO: Validate Refer-To header field value.\n        return new ReferUserAgentClient(this, delegate, options);\n    }\n    /**\n     * Requests sent within a dialog, as any other requests, are atomic.  If\n     * a particular request is accepted by the UAS, all the state changes\n     * associated with it are performed.  If the request is rejected, none\n     * of the state changes are performed.\n     * https://tools.ietf.org/html/rfc3261#section-12.2.2\n     * @param message - Incoming request message within this dialog.\n     */\n    receiveRequest(message) {\n        this.logger.log(`INVITE dialog ${this.id} received ${message.method} request`);\n        // Response retransmissions cease when an ACK request for the\n        // response is received.  This is independent of whatever transport\n        // protocols are used to send the response.\n        // https://tools.ietf.org/html/rfc6026#section-8.1\n        if (message.method === C.ACK) {\n            // If ackWait is true, then this is the ACK to the initial INVITE,\n            // otherwise this is an ACK to an in dialog INVITE. In either case,\n            // guard to make sure the sequence number of the ACK matches the INVITE.\n            if (this.ackWait) {\n                if (this.initialTransaction instanceof InviteClientTransaction) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.initialTransaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                // Update before the delegate has a chance to handle the\n                // message as delegate may callback into this dialog.\n                this.ackWait = false;\n            }\n            else {\n                if (!this.reinviteUserAgentServer) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                if (this.reinviteUserAgentServer.transaction.request.cseq !== message.cseq) {\n                    this.logger.warn(`INVITE dialog ${this.id} received unexpected ${message.method} request, dropping.`);\n                    return;\n                }\n                this.reinviteUserAgentServer = undefined;\n            }\n            this.signalingStateTransition(message);\n            if (this.delegate && this.delegate.onAck) {\n                const promiseOrVoid = this.delegate.onAck({ message });\n                if (promiseOrVoid instanceof Promise) {\n                    this.ackProcessing = true; // make sure this is always reset to false\n                    promiseOrVoid.then(() => (this.ackProcessing = false)).catch(() => (this.ackProcessing = false));\n                }\n            }\n            return;\n        }\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`INVITE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Handle various INVITE related cross-over, glare and race conditions\n        if (message.method === C.INVITE) {\n            // Hopefully this message is helpful...\n            const warning = () => {\n                const reason = this.ackWait ? \"waiting for initial ACK\" : \"processing initial ACK\";\n                this.logger.warn(`INVITE dialog ${this.id} received re-INVITE while ${reason}`);\n                let msg = \"RFC 5407 suggests the following to avoid this race condition... \";\n                msg += \" Note: Implementation issues are outside the scope of this document,\";\n                msg += \" but the following tip is provided for avoiding race conditions of\";\n                msg += \" this type.  The caller can delay sending re-INVITE F6 for some period\";\n                msg += \" of time (2 seconds, perhaps), after which the caller can reasonably\";\n                msg += \" assume that its ACK has been received.  Implementors can decouple the\";\n                msg += \" actions of the user (e.g., pressing the hold button) from the actions\";\n                msg += \" of the protocol (the sending of re-INVITE F6), so that the UA can\";\n                msg += \" behave like this.  In this case, it is the implementor's choice as to\";\n                msg += \" how long to wait.  In most cases, such an implementation may be\";\n                msg += \" useful to prevent the type of race condition shown in this section.\";\n                msg += \" This document expresses no preference about whether or not they\";\n                msg += \" should wait for an ACK to be delivered.  After considering the impact\";\n                msg += \" on user experience, implementors should decide whether or not to wait\";\n                msg += \" for a while, because the user experience depends on the\";\n                msg += \" implementation and has no direct bearing on protocol behavior.\";\n                this.logger.warn(msg);\n                return; // drop re-INVITE request message\n            };\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            const retryAfter = Math.floor(Math.random() * 10) + 1;\n            const extraHeaders = [`Retry-After: ${retryAfter}`];\n            // There may be ONLY ONE offer/answer negotiation in progress for a\n            // single dialog at any point in time.  Section 4 explains how to ensure\n            // this.\n            // https://tools.ietf.org/html/rfc6337#section-2.2\n            if (this.ackProcessing) {\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, { statusCode: 500, extraHeaders });\n                warning();\n                return;\n            }\n            // 3.1.4.  Callee Receives re-INVITE (Established State)  While in the\n            // Moratorium State (Case 1)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.4\n            // 3.1.5.  Callee Receives re-INVITE (Established State) While in the\n            // Moratorium State (Case 2)\n            // https://tools.ietf.org/html/rfc5407#section-3.1.5\n            if (this.ackWait && this.signalingState !== SignalingState.Stable) {\n                // This scenario is basically the same as that of Section 3.1.4, but\n                // differs in sending an offer in the 200 and an answer in the ACK.  In\n                // contrast to the previous case, the offer in the 200 (F3) and the\n                // offer in the re-INVITE (F6) collide with each other.\n                //\n                // Bob sends a 491 to the re-INVITE (F6) since he is not able to\n                // properly handle a new request until he receives an answer.  (Note:\n                // 500 with a Retry-After header may be returned if the 491 response is\n                // understood to indicate request collision.  However, 491 is\n                // recommended here because 500 applies to so many cases that it is\n                // difficult to determine what the real problem was.)\n                // https://tools.ietf.org/html/rfc5407#section-3.1.5\n                // UAS-IsI:  While an INVITE server transaction is incomplete or ACK\n                //           transaction associated with an offer/answer is incomplete,\n                //           a UA must reject another INVITE request with a 500\n                //           response.\n                // https://tools.ietf.org/html/rfc6337#section-4.3\n                this.core.replyStateless(message, { statusCode: 500, extraHeaders });\n                warning();\n                return;\n            }\n            // A UAS that receives a second INVITE before it sends the final\n            // response to a first INVITE with a lower CSeq sequence number on the\n            // same dialog MUST return a 500 (Server Internal Error) response to the\n            // second INVITE and MUST include a Retry-After header field with a\n            // randomly chosen value of between 0 and 10 seconds.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentServer) {\n                this.core.replyStateless(message, { statusCode: 500, extraHeaders });\n                return;\n            }\n            // A UAS that receives an INVITE on a dialog while an INVITE it had sent\n            // on that dialog is in progress MUST return a 491 (Request Pending)\n            // response to the received INVITE.\n            // https://tools.ietf.org/html/rfc3261#section-14.2\n            if (this.reinviteUserAgentClient) {\n                this.core.replyStateless(message, { statusCode: 491 });\n                return;\n            }\n        }\n        // Requests within a dialog MAY contain Record-Route and Contact header\n        // fields.  However, these requests do not cause the dialog's route set\n        // to be modified, although they may modify the remote target URI.\n        // Specifically, requests that are not target refresh requests do not\n        // modify the dialog's remote target URI, and requests that are target\n        // refresh requests do.  For dialogs that have been established with an\n        // INVITE, the only target refresh request defined is re-INVITE (see\n        // Section 14).  Other extensions may define different target refresh\n        // requests for dialogs established in other ways.\n        //\n        //    Note that an ACK is NOT a target refresh request.\n        //\n        // Target refresh requests only update the dialog's remote target URI,\n        // and not the route set formed from the Record-Route.  Updating the\n        // latter would introduce severe backwards compatibility problems with\n        // RFC 2543-compliant systems.\n        // https://tools.ietf.org/html/rfc3261#section-15\n        if (message.method === C.INVITE) {\n            // FIXME: parser needs to be typed...\n            const contact = message.parseHeader(\"contact\");\n            if (!contact) {\n                // TODO: Review to make sure this will never happen\n                throw new Error(\"Contact undefined.\");\n            }\n            if (!(contact instanceof NameAddrHeader)) {\n                throw new Error(\"Contact not instance of NameAddrHeader.\");\n            }\n            this.dialogState.remoteTarget = contact.uri;\n        }\n        // Switch on method and then delegate.\n        switch (message.method) {\n            case C.BYE:\n                // A UAS core receiving a BYE request for an existing dialog MUST follow\n                // the procedures of Section 12.2.2 to process the request.  Once done,\n                // the UAS SHOULD terminate the session (and therefore stop sending and\n                // listening for media).  The only case where it can elect not to are\n                // multicast sessions, where participation is possible even if the other\n                // participant in the dialog has terminated its involvement in the\n                // session.  Whether or not it ends its participation on the session,\n                // the UAS core MUST generate a 2xx response to the BYE, and MUST pass\n                // that to the server transaction for transmission.\n                //\n                // The UAS MUST still respond to any pending requests received for that\n                // dialog.  It is RECOMMENDED that a 487 (Request Terminated) response\n                // be generated to those pending requests.\n                // https://tools.ietf.org/html/rfc3261#section-15.1.2\n                {\n                    const uas = new ByeUserAgentServer(this, message);\n                    this.delegate && this.delegate.onBye ? this.delegate.onBye(uas) : uas.accept();\n                    this.dispose();\n                }\n                break;\n            case C.INFO:\n                // If a UA receives an INFO request associated with an Info Package that\n                // the UA has not indicated willingness to receive, the UA MUST send a\n                // 469 (Bad Info Package) response (see Section 11.6), which contains a\n                // Recv-Info header field with Info Packages for which the UA is willing\n                // to receive INFO requests.\n                {\n                    const uas = new InfoUserAgentServer(this, message);\n                    this.delegate && this.delegate.onInfo\n                        ? this.delegate.onInfo(uas)\n                        : uas.reject({\n                            statusCode: 469,\n                            extraHeaders: [\"Recv-Info:\"]\n                        });\n                }\n                break;\n            case C.INVITE:\n                // If the new session description is not acceptable, the UAS can reject\n                // it by returning a 488 (Not Acceptable Here) response for the re-\n                // INVITE.  This response SHOULD include a Warning header field.\n                // https://tools.ietf.org/html/rfc3261#section-14.2\n                {\n                    const uas = new ReInviteUserAgentServer(this, message);\n                    this.signalingStateTransition(message);\n                    this.delegate && this.delegate.onInvite ? this.delegate.onInvite(uas) : uas.reject({ statusCode: 488 }); // TODO: Warning header field.\n                }\n                break;\n            case C.MESSAGE:\n                {\n                    const uas = new MessageUserAgentServer(this.core, message);\n                    this.delegate && this.delegate.onMessage ? this.delegate.onMessage(uas) : uas.accept();\n                }\n                break;\n            case C.NOTIFY:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.4\n                {\n                    const uas = new NotifyUserAgentServer(this, message);\n                    this.delegate && this.delegate.onNotify ? this.delegate.onNotify(uas) : uas.accept();\n                }\n                break;\n            case C.PRACK:\n                // https://tools.ietf.org/html/rfc3262#section-4\n                {\n                    const uas = new PrackUserAgentServer(this, message);\n                    this.delegate && this.delegate.onPrack ? this.delegate.onPrack(uas) : uas.accept();\n                }\n                break;\n            case C.REFER:\n                // https://tools.ietf.org/html/rfc3515#section-2.4.2\n                {\n                    const uas = new ReferUserAgentServer(this, message);\n                    this.delegate && this.delegate.onRefer ? this.delegate.onRefer(uas) : uas.reject();\n                }\n                break;\n            default:\n                {\n                    this.logger.log(`INVITE dialog ${this.id} received unimplemented ${message.method} request`);\n                    this.core.replyStateless(message, { statusCode: 501 });\n                }\n                break;\n        }\n    }\n    /**\n     * Guard against out of order reliable provisional responses and retransmissions.\n     * Returns false if the response should be discarded, otherwise true.\n     * @param message - Incoming response message within this dialog.\n     */\n    reliableSequenceGuard(message) {\n        const statusCode = message.statusCode;\n        if (!statusCode) {\n            throw new Error(\"Status code undefined\");\n        }\n        if (statusCode > 100 && statusCode < 200) {\n            // If a provisional response is received for an initial request, and\n            // that response contains a Require header field containing the option\n            // tag 100rel, the response is to be sent reliably.  If the response is\n            // a 100 (Trying) (as opposed to 101 to 199), this option tag MUST be\n            // ignored, and the procedures below MUST NOT be used.\n            // https://tools.ietf.org/html/rfc3262#section-4\n            const requireHeader = message.getHeader(\"require\");\n            const rseqHeader = message.getHeader(\"rseq\");\n            const rseq = requireHeader && requireHeader.includes(\"100rel\") && rseqHeader ? Number(rseqHeader) : undefined;\n            if (rseq) {\n                // Handling of subsequent reliable provisional responses for the same\n                // initial request follows the same rules as above, with the following\n                // difference: reliable provisional responses are guaranteed to be in\n                // order.  As a result, if the UAC receives another reliable provisional\n                // response to the same request, and its RSeq value is not one higher\n                // than the value of the sequence number, that response MUST NOT be\n                // acknowledged with a PRACK, and MUST NOT be processed further by the\n                // UAC.  An implementation MAY discard the response, or MAY cache the\n                // response in the hopes of receiving the missing responses.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                if (this.rseq && this.rseq + 1 !== rseq) {\n                    return false;\n                }\n                // Once a reliable provisional response is received, retransmissions of\n                // that response MUST be discarded.  A response is a retransmission when\n                // its dialog ID, CSeq, and RSeq match the original response.  The UAC\n                // MUST maintain a sequence number that indicates the most recently\n                // received in-order reliable provisional response for the initial\n                // request.  This sequence number MUST be maintained until a final\n                // response is received for the initial request.  Its value MUST be\n                // initialized to the RSeq header field in the first reliable\n                // provisional response received for the initial request.\n                // https://tools.ietf.org/html/rfc3262#section-4\n                this.rseq = this.rseq ? this.rseq + 1 : rseq;\n            }\n        }\n        return true;\n    }\n    /**\n     * If not in a stable signaling state, rollback to prior stable signaling state.\n     */\n    signalingStateRollback() {\n        if (this._signalingState === SignalingState.HaveLocalOffer ||\n            this.signalingState === SignalingState.HaveRemoteOffer) {\n            if (this._rollbackOffer && this._rollbackAnswer) {\n                this._signalingState = SignalingState.Stable;\n                this._offer = this._rollbackOffer;\n                this._answer = this._rollbackAnswer;\n            }\n        }\n    }\n    /**\n     * Update the signaling state of the dialog.\n     * @param message - The message to base the update off of.\n     */\n    signalingStateTransition(message) {\n        const body = getBody(message);\n        // No body, no session. No, woman, no cry.\n        if (!body || body.contentDisposition !== \"session\") {\n            return;\n        }\n        // We've got an existing offer and answer which we may wish to rollback to\n        if (this._signalingState === SignalingState.Stable) {\n            this._rollbackOffer = this._offer;\n            this._rollbackAnswer = this._answer;\n        }\n        // We're in UAS role, receiving incoming request with session description\n        if (message instanceof IncomingRequestMessage) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveRemoteOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n        // We're in UAC role, receiving incoming response with session description\n        if (message instanceof IncomingResponseMessage) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveRemoteOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n        // We're in UAC role, sending outgoing request with session description\n        if (message instanceof OutgoingRequestMessage) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveLocalOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n        // We're in UAS role, sending outgoing response with session description\n        if (isBody(message)) {\n            switch (this._signalingState) {\n                case SignalingState.Initial:\n                case SignalingState.Stable:\n                    this._signalingState = SignalingState.HaveLocalOffer;\n                    this._offer = body;\n                    this._answer = undefined;\n                    break;\n                case SignalingState.HaveLocalOffer:\n                    // You cannot make a new offer while one is in progress.\n                    // https://tools.ietf.org/html/rfc3261#section-13.2.1\n                    // FIXME: What to do here?\n                    break;\n                case SignalingState.HaveRemoteOffer:\n                    this._signalingState = SignalingState.Stable;\n                    this._answer = body;\n                    break;\n                case SignalingState.Closed:\n                    break;\n                default:\n                    throw new Error(\"Unexpected signaling state.\");\n            }\n        }\n    }\n    start2xxRetransmissionTimer() {\n        if (this.initialTransaction instanceof InviteServerTransaction) {\n            const transaction = this.initialTransaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = Timers.T1;\n            const retransmission = () => {\n                if (!this.ackWait) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, Timers.T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = () => {\n                if (transaction.state === TransactionState.Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    if (this.ackWait) {\n                        if (this.delegate && this.delegate.onAckTimeout) {\n                            this.delegate.onAckTimeout();\n                        }\n                        else {\n                            this.bye();\n                        }\n                    }\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n    // FIXME: Refactor\n    startReInvite2xxRetransmissionTimer() {\n        if (this.reinviteUserAgentServer && this.reinviteUserAgentServer.transaction instanceof InviteServerTransaction) {\n            const transaction = this.reinviteUserAgentServer.transaction;\n            // Once the response has been constructed, it is passed to the INVITE\n            // server transaction.  In order to ensure reliable end-to-end\n            // transport of the response, it is necessary to periodically pass\n            // the response directly to the transport until the ACK arrives.  The\n            // 2xx response is passed to the transport with an interval that\n            // starts at T1 seconds and doubles for each retransmission until it\n            // reaches T2 seconds (T1 and T2 are defined in Section 17).\n            // Response retransmissions cease when an ACK request for the\n            // response is received.  This is independent of whatever transport\n            // protocols are used to send the response.\n            // https://tools.ietf.org/html/rfc6026#section-8.1\n            let timeout = Timers.T1;\n            const retransmission = () => {\n                if (!this.reinviteUserAgentServer) {\n                    this.invite2xxTimer = undefined;\n                    return;\n                }\n                this.logger.log(\"No ACK for 2xx response received, attempting retransmission\");\n                transaction.retransmitAcceptedResponse();\n                timeout = Math.min(timeout * 2, Timers.T2);\n                this.invite2xxTimer = setTimeout(retransmission, timeout);\n            };\n            this.invite2xxTimer = setTimeout(retransmission, timeout);\n            // If the server retransmits the 2xx response for 64*T1 seconds without\n            // receiving an ACK, the dialog is confirmed, but the session SHOULD be\n            // terminated.  This is accomplished with a BYE, as described in Section 15.\n            // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n            const stateChanged = () => {\n                if (transaction.state === TransactionState.Terminated) {\n                    transaction.removeStateChangeListener(stateChanged);\n                    if (this.invite2xxTimer) {\n                        clearTimeout(this.invite2xxTimer);\n                        this.invite2xxTimer = undefined;\n                    }\n                    if (this.reinviteUserAgentServer) {\n                        // FIXME: TODO: What to do here\n                    }\n                }\n            };\n            transaction.addStateChangeListener(stateChanged);\n        }\n    }\n}\n","import { Timers } from \"../timers.js\";\nimport { ClientTransaction } from \"./client-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * INVITE Client Transaction.\n * @remarks\n * The INVITE transaction consists of a three-way handshake.  The client\n * transaction sends an INVITE, the server transaction sends responses,\n * and the client transaction sends an ACK.\n * https://tools.ietf.org/html/rfc3261#section-17.1.1\n * @public\n */\nexport class InviteClientTransaction extends ClientTransaction {\n    /**\n     * Constructor.\n     * Upon construction, the outgoing request's Via header is updated by calling `setViaHeader`.\n     * Then `toString` is called on the outgoing request and the message is sent via the transport.\n     * After construction the transaction will be in the \"calling\" state and the transaction id\n     * will equal the branch parameter set in the Via header of the outgoing request.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1\n     * @param request - The outgoing INVITE request.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Calling, \"sip.transaction.ict\");\n        /**\n         * Map of 2xx to-tag to ACK.\n         * If value is not undefined, value is the ACK which was sent.\n         * If key exists but value is undefined, a 2xx was received but the ACK not yet sent.\n         * Otherwise, a 2xx was not (yet) received for this transaction.\n         */\n        this.ackRetransmissionCache = new Map();\n        // FIXME: Timer A for unreliable transport not implemented\n        //\n        // If an unreliable transport is being used, the client transaction\n        // MUST start timer A with a value of T1. If a reliable transport is being used,\n        // the client transaction SHOULD NOT start timer A (Timer A controls request retransmissions).\n        // For any transport, the client transaction MUST start timer B with a value\n        // of 64*T1 seconds (Timer B controls transaction timeouts).\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n        //\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        this.B = setTimeout(() => this.timerB(), Timers.TIMER_B);\n        this.send(request.toString()).catch((error) => {\n            this.logTransportError(error, \"Failed to send initial outgoing request.\");\n        });\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        if (this.D) {\n            clearTimeout(this.D);\n            this.D = undefined;\n        }\n        if (this.M) {\n            clearTimeout(this.M);\n            this.M = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"ict\";\n    }\n    /**\n     * ACK a 2xx final response.\n     *\n     * The transaction includes the ACK only if the final response was not a 2xx response (the\n     * transaction will generate and send the ACK to the transport automagically). If the\n     * final response was a 2xx, the ACK is not considered part of the transaction (the\n     * transaction user needs to generate and send the ACK).\n     *\n     * This library is not strictly RFC compliant with regard to ACK handling for 2xx final\n     * responses. Specifically, retransmissions of ACKs to a 2xx final responses is handled\n     * by the transaction layer (instead of the UAC core). The \"standard\" approach is for\n     * the UAC core to receive all 2xx responses and manage sending ACK retransmissions to\n     * the transport directly. Herein the transaction layer manages sending ACKs to 2xx responses\n     * and any retransmissions of those ACKs as needed.\n     *\n     * @param ack - The outgoing ACK request.\n     */\n    ackResponse(ack) {\n        const toTag = ack.toTag;\n        if (!toTag) {\n            throw new Error(\"To tag undefined.\");\n        }\n        const id = \"z9hG4bK\" + Math.floor(Math.random() * 10000000);\n        ack.setViaHeader(id, this.transport.protocol);\n        this.ackRetransmissionCache.set(toTag, ack); // Add to ACK retransmission cache\n        this.send(ack.toString()).catch((error) => {\n            this.logTransportError(error, \"Failed to send ACK to 2xx response.\");\n        });\n    }\n    /**\n     * Handler for incoming responses from the transport which match this transaction.\n     * @param response - The incoming response.\n     */\n    receiveResponse(response) {\n        const statusCode = response.statusCode;\n        if (!statusCode || statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        switch (this.state) {\n            case TransactionState.Calling:\n                // If the client transaction receives a provisional response while in\n                // the \"Calling\" state, it transitions to the \"Proceeding\" state. In the\n                // \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    this.stateTransition(TransactionState.Proceeding);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or\n                // \"Proceeding\" states, the client transaction MUST transition to\n                // the \"Accepted\" state... The 2xx response MUST be passed up to the TU.\n                // The client transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition(TransactionState.Accepted);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Proceeding:\n                // In the \"Proceeding\" state, the client transaction SHOULD NOT retransmit the\n                // request any longer. Furthermore, the provisional response MUST be\n                // passed to the TU.  Any further provisional responses MUST be passed\n                // up to the TU while in the \"Proceeding\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n                if (statusCode >= 100 && statusCode <= 199) {\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When a 2xx response is received while in either the \"Calling\" or \"Proceeding\" states,\n                // the client transaction MUST transition to the \"Accepted\" state...\n                // The 2xx response MUST be passed up to the TU. The client\n                // transaction MUST NOT generate an ACK to the 2xx response -- its\n                // handling is delegated to the TU. A UAC core will send an ACK to\n                // the 2xx response using a new transaction.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                    this.stateTransition(TransactionState.Accepted);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                // When in either the \"Calling\" or \"Proceeding\" states, reception of\n                // a response with status code from 300-699 MUST cause the client\n                // transaction to transition to \"Completed\". The client transaction\n                // MUST pass the received response up to the TU, and the client\n                // transaction MUST generate an ACK request, even if the transport is\n                // reliable (guidelines for constructing the ACK from the response\n                // are given in Section 17.1.1.3), and then pass the ACK to the\n                // transport layer for transmission. The ACK MUST be sent to the\n                // same address, port, and transport to which the original request was sent.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.ack(response);\n                    if (this.user.receiveResponse) {\n                        this.user.receiveResponse(response);\n                    }\n                    return;\n                }\n                break;\n            case TransactionState.Accepted:\n                // The purpose of the \"Accepted\" state is to allow the client\n                // transaction to continue to exist to receive, and pass to the TU,\n                // any retransmissions of the 2xx response and any additional 2xx\n                // responses from other branches of the INVITE if it forked\n                // downstream. Timer M reflects the amount of time that the\n                // transaction user will wait for such messages.\n                //\n                // Any 2xx responses that match this client transaction and that are\n                // received while in the \"Accepted\" state MUST be passed up to the\n                // TU. The client transaction MUST NOT generate an ACK to the 2xx\n                // response. The client transaction takes no further action.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 200 && statusCode <= 299) {\n                    // NOTE: This implementation herein is intentionally not RFC compliant.\n                    // While the first 2xx response for a given branch is passed up to the TU,\n                    // retransmissions of 2xx responses are absorbed and the ACK associated\n                    // with the original response is resent. This approach is taken because\n                    // our current transaction users are not currently in a good position to\n                    // deal with 2xx retransmission. This SHOULD NOT cause any compliance issues - ;)\n                    //\n                    // If we don't have a cache hit, pass the response to the TU.\n                    if (!this.ackRetransmissionCache.has(response.toTag)) {\n                        this.ackRetransmissionCache.set(response.toTag, undefined); // Prime the ACK cache\n                        if (this.user.receiveResponse) {\n                            this.user.receiveResponse(response);\n                        }\n                        return;\n                    }\n                    // If we have a cache hit, try pulling the ACK from cache and retransmitting it.\n                    const ack = this.ackRetransmissionCache.get(response.toTag);\n                    if (ack) {\n                        this.send(ack.toString()).catch((error) => {\n                            this.logTransportError(error, \"Failed to send retransmission of ACK to 2xx response.\");\n                        });\n                        return;\n                    }\n                    // If an ACK was not found in cache then we have received a retransmitted 2xx\n                    // response before the TU responded to the original response (we don't have an ACK yet).\n                    // So discard this response under the assumption that the TU will eventually\n                    // get us a ACK for the original response.\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // Any retransmissions of a response with status code 300-699 that\n                // are received while in the \"Completed\" state MUST cause the ACK to\n                // be re-passed to the transport layer for retransmission, but the\n                // newly received response MUST NOT be passed up to the TU.\n                // https://tools.ietf.org/html/rfc6026#section-8.4\n                if (statusCode >= 300 && statusCode <= 699) {\n                    this.ack(response);\n                    return;\n                }\n                break;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        // Any response received that does not match an existing client\n        // transaction state machine is simply dropped. (Implementations are,\n        // of course, free to log or do other implementation-specific things\n        // with such responses, but the implementer should be sure to consider\n        // the impact of large numbers of malicious stray responses.)\n        // https://tools.ietf.org/html/rfc6026#section-7.2\n        const message = `Received unexpected ${statusCode} response while in state ${this.state}.`;\n        this.logger.warn(message);\n        return;\n    }\n    /**\n     * The client transaction SHOULD inform the TU that a transport failure\n     * has occurred, and the client transaction SHOULD transition directly\n     * to the \"Terminated\" state.  The TU will handle the failover\n     * mechanisms described in [4].\n     * https://tools.ietf.org/html/rfc3261#section-17.1.4\n     * @param error - The error.\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n        this.stateTransition(TransactionState.Terminated, true);\n    }\n    /** For logging. */\n    typeToString() {\n        return \"INVITE client transaction\";\n    }\n    ack(response) {\n        // The ACK request constructed by the client transaction MUST contain\n        // values for the Call-ID, From, and Request-URI that are equal to the\n        // values of those header fields in the request passed to the transport\n        // by the client transaction (call this the \"original request\"). The To\n        // header field in the ACK MUST equal the To header field in the\n        // response being acknowledged, and therefore will usually differ from\n        // the To header field in the original request by the addition of the\n        // tag parameter. The ACK MUST contain a single Via header field, and\n        // this MUST be equal to the top Via header field of the original\n        // request. The CSeq header field in the ACK MUST contain the same\n        // value for the sequence number as was present in the original request,\n        // but the method parameter MUST be equal to \"ACK\".\n        //\n        // If the INVITE request whose response is being acknowledged had Route\n        // header fields, those header fields MUST appear in the ACK. This is\n        // to ensure that the ACK can be routed properly through any downstream\n        // stateless proxies.\n        // https://tools.ietf.org/html/rfc3261#section-17.1.1.3\n        const ruri = this.request.ruri;\n        const callId = this.request.callId;\n        const cseq = this.request.cseq;\n        const from = this.request.getHeader(\"from\");\n        const to = response.getHeader(\"to\");\n        const via = this.request.getHeader(\"via\");\n        const route = this.request.getHeader(\"route\");\n        if (!from) {\n            throw new Error(\"From undefined.\");\n        }\n        if (!to) {\n            throw new Error(\"To undefined.\");\n        }\n        if (!via) {\n            throw new Error(\"Via undefined.\");\n        }\n        let ack = `ACK ${ruri} SIP/2.0\\r\\n`;\n        if (route) {\n            ack += `Route: ${route}\\r\\n`;\n        }\n        ack += `Via: ${via}\\r\\n`;\n        ack += `To: ${to}\\r\\n`;\n        ack += `From: ${from}\\r\\n`;\n        ack += `Call-ID: ${callId}\\r\\n`;\n        ack += `CSeq: ${cseq} ACK\\r\\n`;\n        ack += `Max-Forwards: 70\\r\\n`;\n        ack += `Content-Length: 0\\r\\n\\r\\n`;\n        // TOOO: \"User-Agent\" header\n        this.send(ack).catch((error) => {\n            this.logTransportError(error, \"Failed to send ACK to non-2xx response.\");\n        });\n        return;\n    }\n    /**\n     * Execute a state transition.\n     * @param newState - New state.\n     */\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Calling:\n                invalidStateTransition();\n                break;\n            case TransactionState.Proceeding:\n                if (this.state !== TransactionState.Calling) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Accepted:\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Calling && this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Calling &&\n                    this.state !== TransactionState.Accepted &&\n                    this.state !== TransactionState.Completed) {\n                    if (!dueToTransportError) {\n                        invalidStateTransition();\n                    }\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // While not spelled out in the RFC, Timer B is the maximum amount of time that a sender\n        // will wait for an INVITE message to be acknowledged (a SIP response message is received).\n        // So Timer B should be cleared when the transaction state proceeds from \"Calling\".\n        if (this.B) {\n            clearTimeout(this.B);\n            this.B = undefined;\n        }\n        if (newState === TransactionState.Proceeding) {\n            // Timers have no effect on \"Proceeding\" state.\n            // In the \"Proceeding\" state, the client transaction\n            // SHOULD NOT retransmit the request any longer.\n            // https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n        }\n        // The client transaction MUST start Timer D when it enters the \"Completed\" state\n        // for any reason, with a value of at least 32 seconds for unreliable transports,\n        // and a value of zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === TransactionState.Completed) {\n            this.D = setTimeout(() => this.timerD(), Timers.TIMER_D);\n        }\n        // The client transaction MUST transition to the \"Accepted\" state,\n        // and Timer M MUST be started with a value of 64*T1.\n        // https://tools.ietf.org/html/rfc6026#section-8.4\n        if (newState === TransactionState.Accepted) {\n            this.M = setTimeout(() => this.timerM(), Timers.TIMER_M);\n        }\n        // Once the transaction is in the \"Terminated\" state, it MUST be destroyed immediately.\n        // https://tools.ietf.org/html/rfc6026#section-8.7\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        // Update state.\n        this.setState(newState);\n    }\n    /**\n     * When timer A fires, the client transaction MUST retransmit the\n     * request by passing it to the transport layer, and MUST reset the\n     * timer with a value of 2*T1.\n     * When timer A fires 2*T1 seconds later, the request MUST be\n     * retransmitted again (assuming the client transaction is still in this\n     * state). This process MUST continue so that the request is\n     * retransmitted with intervals that double after each transmission.\n     * These retransmissions SHOULD only be done while the client\n     * transaction is in the \"Calling\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */\n    timerA() {\n        // TODO\n    }\n    /**\n     * If the client transaction is still in the \"Calling\" state when timer\n     * B fires, the client transaction SHOULD inform the TU that a timeout\n     * has occurred.  The client transaction MUST NOT generate an ACK.\n     * https://tools.ietf.org/html/rfc3261#section-17.1.1.2\n     */\n    timerB() {\n        this.logger.debug(`Timer B expired for INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Calling) {\n            this.onRequestTimeout();\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * If Timer D fires while the client transaction is in the \"Completed\" state,\n     * the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */\n    timerD() {\n        this.logger.debug(`Timer D expired for INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Completed) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n    /**\n     * If Timer M fires while the client transaction is in the \"Accepted\"\n     * state, the client transaction MUST move to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc6026#section-8.4\n     */\n    timerM() {\n        this.logger.debug(`Timer M expired for INVITE client transaction ${this.id}.`);\n        if (this.state === TransactionState.Accepted) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * BYE UAC.\n * @public\n */\nexport class ByeUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.BYE, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n        dialog.dispose();\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { IncomingResponseMessage } from \"../messages/incoming-response-message.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\n/**\n * User Agent Client (UAC).\n * @remarks\n * A user agent client is a logical entity\n * that creates a new request, and then uses the client\n * transaction state machinery to send it.  The role of UAC lasts\n * only for the duration of that transaction.  In other words, if\n * a piece of software initiates a request, it acts as a UAC for\n * the duration of that transaction.  If it receives a request\n * later, it assumes the role of a user agent server for the\n * processing of that transaction.\n * https://tools.ietf.org/html/rfc3261#section-6\n * @public\n */\nexport class UserAgentClient {\n    constructor(transactionConstructor, core, message, delegate) {\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.challenged = false;\n        this.stale = false;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-client\");\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */\n    get transaction() {\n        if (!this._transaction) {\n            throw new Error(\"Transaction undefined.\");\n        }\n        return this._transaction;\n    }\n    /**\n     * Since requests other than INVITE are responded to immediately, sending a\n     * CANCEL for a non-INVITE request would always create a race condition.\n     * A CANCEL request SHOULD NOT be sent to cancel a request other than INVITE.\n     * https://tools.ietf.org/html/rfc3261#section-9.1\n     * @param options - Cancel options bucket.\n     */\n    cancel(reason, options = {}) {\n        if (!this.transaction) {\n            throw new Error(\"Transaction undefined.\");\n        }\n        if (!this.message.to) {\n            throw new Error(\"To undefined.\");\n        }\n        if (!this.message.from) {\n            throw new Error(\"From undefined.\");\n        }\n        // The following procedures are used to construct a CANCEL request.  The\n        // Request-URI, Call-ID, To, the numeric part of CSeq, and From header\n        // fields in the CANCEL request MUST be identical to those in the\n        // request being cancelled, including tags.  A CANCEL constructed by a\n        // client MUST have only a single Via header field value matching the\n        // top Via value in the request being cancelled.  Using the same values\n        // for these header fields allows the CANCEL to be matched with the\n        // request it cancels (Section 9.2 indicates how such matching occurs).\n        // However, the method part of the CSeq header field MUST have a value\n        // of CANCEL.  This allows it to be identified and processed as a\n        // transaction in its own right (See Section 17).\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        const message = this.core.makeOutgoingRequestMessage(C.CANCEL, this.message.ruri, this.message.from.uri, this.message.to.uri, {\n            toTag: this.message.toTag,\n            fromTag: this.message.fromTag,\n            callId: this.message.callId,\n            cseq: this.message.cseq\n        }, options.extraHeaders);\n        // TODO: Revisit this.\n        // The CANCEL needs to use the same branch parameter so that\n        // it matches the INVITE transaction, but this is a hacky way to do this.\n        // Or at the very least not well documented. If the the branch parameter\n        // is set on the outgoing request, the transaction will use it.\n        // Otherwise the transaction will make a new one.\n        message.branch = this.message.branch;\n        if (this.message.headers.Route) {\n            message.headers.Route = this.message.headers.Route;\n        }\n        if (reason) {\n            message.setHeader(\"Reason\", reason);\n        }\n        // If no provisional response has been received, the CANCEL request MUST\n        // NOT be sent; rather, the client MUST wait for the arrival of a\n        // provisional response before sending the request. If the original\n        // request has generated a final response, the CANCEL SHOULD NOT be\n        // sent, as it is an effective no-op, since CANCEL has no effect on\n        // requests that have already generated a final response.\n        // https://tools.ietf.org/html/rfc3261#section-9.1\n        if (this.transaction.state === TransactionState.Proceeding) {\n            new UserAgentClient(NonInviteClientTransaction, this.core, message);\n        }\n        else {\n            this.transaction.addStateChangeListener(() => {\n                if (this.transaction && this.transaction.state === TransactionState.Proceeding) {\n                    new UserAgentClient(NonInviteClientTransaction, this.core, message);\n                }\n            }, { once: true });\n        }\n        return message;\n    }\n    /**\n     * If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n     * response is received, the UAC SHOULD follow the authorization\n     * procedures of Section 22.2 and Section 22.3 to retry the request with\n     * credentials.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n     * 22 Usage of HTTP Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22\n     * 22.1 Framework\n     * https://tools.ietf.org/html/rfc3261#section-22.1\n     * 22.2 User-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.2\n     * 22.3 Proxy-to-User Authentication\n     * https://tools.ietf.org/html/rfc3261#section-22.3\n     *\n     * FIXME: This \"guard for and retry the request with credentials\"\n     * implementation is not complete and at best minimally passable.\n     * @param response - The incoming response to guard.\n     * @param dialog - If defined, the dialog within which the response was received.\n     * @returns True if the program execution is to continue in the branch in question.\n     *          Otherwise the request is retried with credentials and current request processing must stop.\n     */\n    authenticationGuard(message, dialog) {\n        const statusCode = message.statusCode;\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        // If a 401 (Unauthorized) or 407 (Proxy Authentication Required)\n        // response is received, the UAC SHOULD follow the authorization\n        // procedures of Section 22.2 and Section 22.3 to retry the request with\n        // credentials.\n        // https://tools.ietf.org/html/rfc3261#section-8.1.3.5\n        if (statusCode !== 401 && statusCode !== 407) {\n            return true;\n        }\n        // Get and parse the appropriate WWW-Authenticate or Proxy-Authenticate header.\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        let challenge;\n        let authorizationHeaderName;\n        if (statusCode === 401) {\n            challenge = message.parseHeader(\"www-authenticate\");\n            authorizationHeaderName = \"authorization\";\n        }\n        else {\n            challenge = message.parseHeader(\"proxy-authenticate\");\n            authorizationHeaderName = \"proxy-authorization\";\n        }\n        // Verify it seems a valid challenge.\n        if (!challenge) {\n            this.logger.warn(statusCode + \" with wrong or missing challenge, cannot authenticate\");\n            return true;\n        }\n        // Avoid infinite authentications.\n        if (this.challenged && (this.stale || challenge.stale !== true)) {\n            this.logger.warn(statusCode + \" apparently in authentication loop, cannot authenticate\");\n            return true;\n        }\n        // Get credentials.\n        if (!this.credentials) {\n            this.credentials = this.core.configuration.authenticationFactory();\n            if (!this.credentials) {\n                this.logger.warn(\"Unable to obtain credentials, cannot authenticate\");\n                return true;\n            }\n        }\n        // Verify that the challenge is really valid.\n        if (!this.credentials.authenticate(this.message, challenge)) {\n            return true;\n        }\n        this.challenged = true;\n        if (challenge.stale) {\n            this.stale = true;\n        }\n        // If response to out of dialog request, assume incrementing the CSeq will suffice.\n        let cseq = (this.message.cseq += 1);\n        // If response to in dialog request, get a valid next CSeq number.\n        if (dialog && dialog.localSequenceNumber) {\n            dialog.incrementLocalSequenceNumber();\n            cseq = this.message.cseq = dialog.localSequenceNumber;\n        }\n        this.message.setHeader(\"cseq\", cseq + \" \" + this.message.method);\n        this.message.setHeader(authorizationHeaderName, this.credentials.toString());\n        // Calling init (again) will swap out our existing client transaction with a new one.\n        // FIXME: HACK: An assumption is being made here that there is nothing that needs to\n        // be cleaned up beyond the client transaction which is being replaced. For example,\n        // it is assumed that no early dialogs have been created.\n        this.init();\n        return false;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     */\n    onRequestTimeout() {\n        this.logger.warn(\"User agent client request timed out. Generating internal 408 Request Timeout.\");\n        const message = new IncomingResponseMessage();\n        message.statusCode = 408;\n        message.reasonPhrase = \"Request Timeout\";\n        this.receiveResponse(message);\n        return;\n    }\n    /**\n     * 8.1.3.1 Transaction Layer Errors\n     * In some cases, the response returned by the transaction layer will\n     * not be a SIP message, but rather a transaction layer error.  When a\n     * timeout error is received from the transaction layer, it MUST be\n     * treated as if a 408 (Request Timeout) status code has been received.\n     * If a fatal transport error is reported by the transport layer\n     * (generally, due to fatal ICMP errors in UDP or connection failures in\n     * TCP), the condition MUST be treated as a 503 (Service Unavailable)\n     * status code.\n     * https://tools.ietf.org/html/rfc3261#section-8.1.3.1\n     * @param error - Transport error\n     */\n    onTransportError(error) {\n        this.logger.error(error.message);\n        this.logger.error(\"User agent client request transport error. Generating internal 503 Service Unavailable.\");\n        const message = new IncomingResponseMessage();\n        message.statusCode = 503;\n        message.reasonPhrase = \"Service Unavailable\";\n        this.receiveResponse(message);\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message)) {\n            return;\n        }\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        switch (true) {\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) {\n                    this.delegate.onTrying({ message });\n                }\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) {\n                    this.delegate.onProgress({ message });\n                }\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onAccept) {\n                    this.delegate.onAccept({ message });\n                }\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onRedirect) {\n                    this.delegate.onRedirect({ message });\n                }\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onReject) {\n                    this.delegate.onReject({ message });\n                }\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onRequestTimeout: () => this.onRequestTimeout(),\n            onStateChange: (newState) => {\n                if (newState === TransactionState.Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentClients.delete(userAgentClientId);\n                    // FIXME: HACK: Our transaction may have been swapped out with a new one\n                    // post authentication (see above), so make sure to only to dispose of\n                    // ourselves if this terminating transaction is our current transaction.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    if (transaction === this._transaction) {\n                        this.dispose();\n                    }\n                }\n            },\n            onTransportError: (error) => this.onTransportError(error),\n            receiveResponse: (message) => this.receiveResponse(message)\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentClientId = transaction.id + transaction.request.method;\n        this.core.userAgentClients.set(userAgentClientId, this);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * BYE UAS.\n * @public\n */\nexport class ByeUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(NonInviteServerTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { Timers } from \"../timers.js\";\nimport { ServerTransaction } from \"./server-transaction.js\";\nimport { TransactionState } from \"./transaction-state.js\";\n/**\n * Non-INVITE Server Transaction.\n * @remarks\n * https://tools.ietf.org/html/rfc3261#section-17.2.2\n * @public\n */\nexport class NonInviteServerTransaction extends ServerTransaction {\n    /**\n     * Constructor.\n     * After construction the transaction will be in the \"trying\": state and the transaction\n     * `id` will equal the branch parameter set in the Via header of the incoming request.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     * @param request - Incoming Non-INVITE request from the transport.\n     * @param transport - The transport.\n     * @param user - The transaction user.\n     */\n    constructor(request, transport, user) {\n        super(request, transport, user, TransactionState.Trying, \"sip.transaction.nist\");\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.J) {\n            clearTimeout(this.J);\n            this.J = undefined;\n        }\n        super.dispose();\n    }\n    /** Transaction kind. Deprecated. */\n    get kind() {\n        return \"nist\";\n    }\n    /**\n     * Receive requests from transport matching this transaction.\n     * @param request - Request matching this transaction.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    receiveRequest(request) {\n        switch (this.state) {\n            case TransactionState.Trying:\n                // Once in the \"Trying\" state, any further request retransmissions are discarded.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                break;\n            case TransactionState.Proceeding:\n                // If a retransmission of the request is received while in the \"Proceeding\" state,\n                // the most recently sent provisional response MUST be passed to the transport layer for retransmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) {\n                    throw new Error(\"Last response undefined.\");\n                }\n                this.send(this.lastResponse).catch((error) => {\n                    this.logTransportError(error, \"Failed to send retransmission of provisional response.\");\n                });\n                break;\n            case TransactionState.Completed:\n                // While in the \"Completed\" state, the server transaction MUST pass the final response to the transport\n                // layer for retransmission whenever a retransmission of the request is received. Any other final responses\n                // passed by the TU to the server transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                if (!this.lastResponse) {\n                    throw new Error(\"Last response undefined.\");\n                }\n                this.send(this.lastResponse).catch((error) => {\n                    this.logTransportError(error, \"Failed to send retransmission of final response.\");\n                });\n                break;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n    }\n    /**\n     * Receive responses from TU for this transaction.\n     * @param statusCode - Status code of response. 101-199 not allowed per RFC 4320.\n     * @param response - Response to send.\n     */\n    receiveResponse(statusCode, response) {\n        if (statusCode < 100 || statusCode > 699) {\n            throw new Error(`Invalid status code ${statusCode}`);\n        }\n        // An SIP element MUST NOT send any provisional response with a\n        // Status-Code other than 100 to a non-INVITE request.\n        // An SIP element MUST NOT respond to a non-INVITE request with a\n        // Status-Code of 100 over any unreliable transport, such as UDP,\n        // before the amount of time it takes a client transaction's Timer E to be reset to T2.\n        // An SIP element MAY respond to a non-INVITE request with a\n        // Status-Code of 100 over a reliable transport at any time.\n        // https://tools.ietf.org/html/rfc4320#section-4.1\n        if (statusCode > 100 && statusCode <= 199) {\n            throw new Error(\"Provisional response other than 100 not allowed.\");\n        }\n        switch (this.state) {\n            case TransactionState.Trying:\n                // While in the \"Trying\" state, if the TU passes a provisional response\n                // to the server transaction, the server transaction MUST enter the \"Proceeding\" state.\n                // The response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 100 && statusCode < 200) {\n                    this.stateTransition(TransactionState.Proceeding);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send provisional response.\");\n                    });\n                    return;\n                }\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Proceeding:\n                // Any further provisional responses that are received from the TU while\n                // in the \"Proceeding\" state MUST be passed to the transport layer for transmission.\n                // If the TU passes a final response (status codes 200-699) to the server while in\n                // the \"Proceeding\" state, the transaction MUST enter the \"Completed\" state, and\n                // the response MUST be passed to the transport layer for transmission.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                this.lastResponse = response;\n                if (statusCode >= 200 && statusCode <= 699) {\n                    this.stateTransition(TransactionState.Completed);\n                    this.send(response).catch((error) => {\n                        this.logTransportError(error, \"Failed to send final response.\");\n                    });\n                    return;\n                }\n                break;\n            case TransactionState.Completed:\n                // Any other final responses passed by the TU to the server\n                // transaction MUST be discarded while in the \"Completed\" state.\n                // https://tools.ietf.org/html/rfc3261#section-17.2.2\n                return;\n            case TransactionState.Terminated:\n                break;\n            default:\n                throw new Error(`Invalid state ${this.state}`);\n        }\n        const message = `Non-INVITE server transaction received unexpected ${statusCode} response from TU while in state ${this.state}.`;\n        this.logger.error(message);\n        throw new Error(message);\n    }\n    /**\n     * First, the procedures in [4] are followed, which attempt to deliver the response to a backup.\n     * If those should all fail, based on the definition of failure in [4], the server transaction SHOULD\n     * inform the TU that a failure has occurred, and SHOULD transition to the terminated state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.4\n     */\n    onTransportError(error) {\n        if (this.user.onTransportError) {\n            this.user.onTransportError(error);\n        }\n        this.stateTransition(TransactionState.Terminated, true);\n    }\n    /** For logging. */\n    typeToString() {\n        return \"non-INVITE server transaction\";\n    }\n    stateTransition(newState, dueToTransportError = false) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            throw new Error(`Invalid state transition from ${this.state} to ${newState}`);\n        };\n        switch (newState) {\n            case TransactionState.Trying:\n                invalidStateTransition();\n                break;\n            case TransactionState.Proceeding:\n                if (this.state !== TransactionState.Trying) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Completed:\n                if (this.state !== TransactionState.Trying && this.state !== TransactionState.Proceeding) {\n                    invalidStateTransition();\n                }\n                break;\n            case TransactionState.Terminated:\n                if (this.state !== TransactionState.Proceeding && this.state !== TransactionState.Completed) {\n                    if (!dueToTransportError) {\n                        invalidStateTransition();\n                    }\n                }\n                break;\n            default:\n                invalidStateTransition();\n        }\n        // When the server transaction enters the \"Completed\" state, it MUST set Timer J to fire\n        // in 64*T1 seconds for unreliable transports, and zero seconds for reliable transports.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === TransactionState.Completed) {\n            this.J = setTimeout(() => this.timerJ(), Timers.TIMER_J);\n        }\n        // The server transaction MUST be destroyed the instant it enters the \"Terminated\" state.\n        // https://tools.ietf.org/html/rfc3261#section-17.2.2\n        if (newState === TransactionState.Terminated) {\n            this.dispose();\n        }\n        this.setState(newState);\n    }\n    /**\n     * The server transaction remains in this state until Timer J fires,\n     * at which point it MUST transition to the \"Terminated\" state.\n     * https://tools.ietf.org/html/rfc3261#section-17.2.2\n     */\n    timerJ() {\n        this.logger.debug(`Timer J expired for NON-INVITE server transaction ${this.id}.`);\n        if (this.state === TransactionState.Completed) {\n            this.stateTransition(TransactionState.Terminated);\n        }\n    }\n}\n","import { TransactionStateError } from \"../exceptions/transaction-state-error.js\";\nimport { constructOutgoingResponse } from \"../messages/outgoing-response.js\";\nimport { newTag } from \"../messages/utils.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { TransactionState } from \"../transactions/transaction-state.js\";\n/**\n * User Agent Server (UAS).\n * @remarks\n * A user agent server is a logical entity\n * that generates a response to a SIP request.  The response\n * accepts, rejects, or redirects the request.  This role lasts\n * only for the duration of that transaction.  In other words, if\n * a piece of software responds to a request, it acts as a UAS for\n * the duration of that transaction.  If it generates a request\n * later, it assumes the role of a user agent client for the\n * processing of that transaction.\n * https://tools.ietf.org/html/rfc3261#section-6\n * @public\n */\nexport class UserAgentServer {\n    constructor(transactionConstructor, core, message, delegate) {\n        this.transactionConstructor = transactionConstructor;\n        this.core = core;\n        this.message = message;\n        this.delegate = delegate;\n        this.logger = this.loggerFactory.getLogger(\"sip.user-agent-server\");\n        this.toTag = message.toTag ? message.toTag : newTag();\n        this.init();\n    }\n    dispose() {\n        this.transaction.dispose();\n    }\n    get loggerFactory() {\n        return this.core.loggerFactory;\n    }\n    /** The transaction associated with this request. */\n    get transaction() {\n        if (!this._transaction) {\n            throw new Error(\"Transaction undefined.\");\n        }\n        return this._transaction;\n    }\n    accept(options = { statusCode: 200 }) {\n        if (!this.acceptable) {\n            throw new TransactionStateError(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 200 || statusCode > 299) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const response = this.reply(options);\n        return response;\n    }\n    progress(options = { statusCode: 180 }) {\n        if (!this.progressable) {\n            throw new TransactionStateError(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 101 || statusCode > 199) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const response = this.reply(options);\n        return response;\n    }\n    redirect(contacts, options = { statusCode: 302 }) {\n        if (!this.redirectable) {\n            throw new TransactionStateError(`${this.message.method} not redirectable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 300 || statusCode > 399) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const contactHeaders = new Array();\n        contacts.forEach((contact) => contactHeaders.push(`Contact: ${contact.toString()}`));\n        options.extraHeaders = (options.extraHeaders || []).concat(contactHeaders);\n        const response = this.reply(options);\n        return response;\n    }\n    reject(options = { statusCode: 480 }) {\n        if (!this.rejectable) {\n            throw new TransactionStateError(`${this.message.method} not rejectable in state ${this.transaction.state}.`);\n        }\n        const statusCode = options.statusCode;\n        if (statusCode < 400 || statusCode > 699) {\n            throw new TypeError(`Invalid statusCode: ${statusCode}`);\n        }\n        const response = this.reply(options);\n        return response;\n    }\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    trying(options) {\n        if (!this.tryingable) {\n            throw new TransactionStateError(`${this.message.method} not tryingable in state ${this.transaction.state}.`);\n        }\n        const response = this.reply({ statusCode: 100 });\n        return response;\n    }\n    /**\n     * If the UAS did not find a matching transaction for the CANCEL\n     * according to the procedure above, it SHOULD respond to the CANCEL\n     * with a 481 (Call Leg/Transaction Does Not Exist).  If the transaction\n     * for the original request still exists, the behavior of the UAS on\n     * receiving a CANCEL request depends on whether it has already sent a\n     * final response for the original request.  If it has, the CANCEL\n     * request has no effect on the processing of the original request, no\n     * effect on any session state, and no effect on the responses generated\n     * for the original request.  If the UAS has not issued a final response\n     * for the original request, its behavior depends on the method of the\n     * original request.  If the original request was an INVITE, the UAS\n     * SHOULD immediately respond to the INVITE with a 487 (Request\n     * Terminated).  A CANCEL request has no impact on the processing of\n     * transactions with any other method defined in this specification.\n     * https://tools.ietf.org/html/rfc3261#section-9.2\n     * @param request - Incoming CANCEL request.\n     */\n    receiveCancel(message) {\n        // Note: Currently CANCEL is being handled as a special case.\n        // No UAS is created to handle the CANCEL and the response to\n        // it CANCEL is being handled statelessly by the user agent core.\n        // As such, there is currently no way to externally impact the\n        // response to the a CANCEL request.\n        if (this.delegate && this.delegate.onCancel) {\n            this.delegate.onCancel(message);\n        }\n    }\n    get acceptable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Proceeding || this.transaction.state === TransactionState.Accepted);\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Trying || this.transaction.state === TransactionState.Proceeding);\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get progressable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return false; // https://tools.ietf.org/html/rfc4320#section-4.1\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get redirectable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Trying || this.transaction.state === TransactionState.Proceeding);\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get rejectable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return (this.transaction.state === TransactionState.Trying || this.transaction.state === TransactionState.Proceeding);\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    get tryingable() {\n        if (this.transaction instanceof InviteServerTransaction) {\n            return this.transaction.state === TransactionState.Proceeding;\n        }\n        if (this.transaction instanceof NonInviteServerTransaction) {\n            return this.transaction.state === TransactionState.Trying;\n        }\n        throw new Error(\"Unknown transaction type.\");\n    }\n    /**\n     * When a UAS wishes to construct a response to a request, it follows\n     * the general procedures detailed in the following subsections.\n     * Additional behaviors specific to the response code in question, which\n     * are not detailed in this section, may also be required.\n     *\n     * Once all procedures associated with the creation of a response have\n     * been completed, the UAS hands the response back to the server\n     * transaction from which it received the request.\n     * https://tools.ietf.org/html/rfc3261#section-8.2.6\n     * @param statusCode - Status code to reply with.\n     * @param options - Reply options bucket.\n     */\n    reply(options) {\n        if (!options.toTag && options.statusCode !== 100) {\n            options.toTag = this.toTag;\n        }\n        options.userAgent = options.userAgent || this.core.configuration.userAgentHeaderFieldValue;\n        options.supported = options.supported || this.core.configuration.supportedOptionTagsResponse;\n        const response = constructOutgoingResponse(this.message, options);\n        this.transaction.receiveResponse(options.statusCode, response.message);\n        return response;\n    }\n    init() {\n        // We are the transaction user.\n        const user = {\n            loggerFactory: this.loggerFactory,\n            onStateChange: (newState) => {\n                if (newState === TransactionState.Terminated) {\n                    // Remove the terminated transaction from the core.\n                    // eslint-disable-next-line @typescript-eslint/no-use-before-define\n                    this.core.userAgentServers.delete(userAgentServerId);\n                    this.dispose();\n                }\n            },\n            onTransportError: (error) => {\n                this.logger.error(error.message);\n                if (this.delegate && this.delegate.onTransportError) {\n                    this.delegate.onTransportError(error);\n                }\n                else {\n                    this.logger.error(\"User agent server response transport error.\");\n                }\n            }\n        };\n        // Create a new transaction with us as the user.\n        const transaction = new this.transactionConstructor(this.message, this.core.transport, user);\n        this._transaction = transaction;\n        // Add the new transaction to the core.\n        const userAgentServerId = transaction.id;\n        this.core.userAgentServers.set(transaction.id, this);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * INFO UAC.\n * @public\n */\nexport class InfoUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.INFO, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * INFO UAS.\n * @public\n */\nexport class InfoUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(NonInviteServerTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * MESSAGE UAC.\n * @public\n */\nexport class MessageUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(NonInviteClientTransaction, core, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * MESSAGE UAS.\n * @public\n */\nexport class MessageUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(NonInviteServerTransaction, core, message, delegate);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * NOTIFY UAS.\n * @public\n */\nexport class NotifyUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.NOTIFY, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction instanceOfDialog(object) {\n    return object.userAgentCore !== undefined;\n}\n/**\n * NOTIFY UAS.\n * @public\n */\nexport class NotifyUserAgentServer extends UserAgentServer {\n    /**\n     * NOTIFY UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog NOTIFY, UserAgentCore for out of dialog NOTIFY (deprecated).\n     * @param message - Incoming NOTIFY request message.\n     */\n    constructor(dialogOrCore, message, delegate) {\n        const userAgentCore = instanceOfDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super(NonInviteServerTransaction, userAgentCore, message, delegate);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * PRACK UAC.\n * @public\n */\nexport class PrackUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.PRACK, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n        dialog.signalingStateTransition(message);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * PRACK UAS.\n * @public\n */\nexport class PrackUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(NonInviteServerTransaction, dialog.userAgentCore, message, delegate);\n        // Update dialog signaling state with offer/answer in body\n        dialog.signalingStateTransition(message);\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */\n    accept(options = { statusCode: 200 }) {\n        if (options.body) {\n            // Update dialog signaling state with offer/answer in body\n            this.dialog.signalingStateTransition(options.body);\n        }\n        return super.accept(options);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { InviteClientTransaction } from \"../transactions/invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * Re-INVITE UAC.\n * @remarks\n * 14 Modifying an Existing Session\n * https://tools.ietf.org/html/rfc3261#section-14\n * 14.1 UAC Behavior\n * https://tools.ietf.org/html/rfc3261#section-14.1\n * @public\n */\nexport class ReInviteUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.INVITE, options);\n        super(InviteClientTransaction, dialog.userAgentCore, message, delegate);\n        this.delegate = delegate;\n        dialog.signalingStateTransition(message);\n        // FIXME: TODO: next line obviously needs to be improved...\n        dialog.reinviteUserAgentClient = this; // let the dialog know re-invite request sent\n        this.dialog = dialog;\n    }\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message, this.dialog)) {\n            return;\n        }\n        const statusCode = message.statusCode ? message.statusCode.toString() : \"\";\n        if (!statusCode) {\n            throw new Error(\"Response status code undefined.\");\n        }\n        switch (true) {\n            case /^100$/.test(statusCode):\n                if (this.delegate && this.delegate.onTrying) {\n                    this.delegate.onTrying({ message });\n                }\n                break;\n            case /^1[0-9]{2}$/.test(statusCode):\n                if (this.delegate && this.delegate.onProgress) {\n                    this.delegate.onProgress({\n                        message,\n                        session: this.dialog,\n                        // eslint-disable-next-line @typescript-eslint/no-unused-vars\n                        prack: (options) => {\n                            throw new Error(\"Unimplemented.\");\n                        }\n                    });\n                }\n                break;\n            case /^2[0-9]{2}$/.test(statusCode):\n                // Update dialog signaling state with offer/answer in body\n                this.dialog.signalingStateTransition(message);\n                if (this.delegate && this.delegate.onAccept) {\n                    this.delegate.onAccept({\n                        message,\n                        session: this.dialog,\n                        ack: (options) => {\n                            const outgoingAckRequest = this.dialog.ack(options);\n                            return outgoingAckRequest;\n                        }\n                    });\n                }\n                break;\n            case /^3[0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onRedirect) {\n                    this.delegate.onRedirect({ message });\n                }\n                break;\n            case /^[4-6][0-9]{2}$/.test(statusCode):\n                this.dialog.signalingStateRollback();\n                this.dialog.reinviteUserAgentClient = undefined; // ACK was handled by transaction\n                if (this.delegate && this.delegate.onReject) {\n                    this.delegate.onReject({ message });\n                }\n                else {\n                    // If a UA receives a non-2xx final response to a re-INVITE, the session\n                    // parameters MUST remain unchanged, as if no re-INVITE had been issued.\n                    // Note that, as stated in Section 12.2.1.2, if the non-2xx final\n                    // response is a 481 (Call/Transaction Does Not Exist), or a 408\n                    // (Request Timeout), or no response at all is received for the re-\n                    // INVITE (that is, a timeout is returned by the INVITE client\n                    // transaction), the UAC will terminate the dialog.\n                    //\n                    // If a UAC receives a 491 response to a re-INVITE, it SHOULD start a\n                    // timer with a value T chosen as follows:\n                    //\n                    //    1. If the UAC is the owner of the Call-ID of the dialog ID\n                    //       (meaning it generated the value), T has a randomly chosen value\n                    //       between 2.1 and 4 seconds in units of 10 ms.\n                    //\n                    //    2. If the UAC is not the owner of the Call-ID of the dialog ID, T\n                    //       has a randomly chosen value of between 0 and 2 seconds in units\n                    //       of 10 ms.\n                    //\n                    // When the timer fires, the UAC SHOULD attempt the re-INVITE once more,\n                    // if it still desires for that session modification to take place.  For\n                    // example, if the call was already hung up with a BYE, the re-INVITE\n                    // would not take place.\n                    // https://tools.ietf.org/html/rfc3261#section-14.1\n                    // FIXME: TODO: The above.\n                }\n                break;\n            default:\n                throw new Error(`Invalid status code ${statusCode}`);\n        }\n    }\n}\n","import { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * Re-INVITE UAS.\n * @remarks\n * 14 Modifying an Existing Session\n * https://tools.ietf.org/html/rfc3261#section-14\n * 14.2 UAS Behavior\n * https://tools.ietf.org/html/rfc3261#section-14.2\n * @public\n */\nexport class ReInviteUserAgentServer extends UserAgentServer {\n    constructor(dialog, message, delegate) {\n        super(InviteServerTransaction, dialog.userAgentCore, message, delegate);\n        dialog.reinviteUserAgentServer = this;\n        this.dialog = dialog;\n    }\n    /**\n     * Update the dialog signaling state on a 2xx response.\n     * @param options - Options bucket.\n     */\n    accept(options = { statusCode: 200 }) {\n        // FIXME: The next two lines SHOULD go away, but I suppose it's technically harmless...\n        // These are here because some versions of SIP.js prior to 0.13.8 set the route set\n        // of all in dialog ACKs based on the Record-Route headers in the associated 2xx\n        // response. While this worked for dialog forming 2xx responses, it was technically\n        // broken for re-INVITE ACKS as it only worked if the UAS populated the Record-Route\n        // headers in the re-INVITE 2xx response (which is not required and a waste of bandwidth\n        // as the should be ignored if present in re-INVITE ACKS) and the UAS populated\n        // the Record-Route headers with the correct values (would be weird not too, but...).\n        // Anyway, for now the technically useless Record-Route headers are being added\n        // to maintain \"backwards compatibility\" with the older broken versions of SIP.js.\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(this.dialog.routeSet.map((route) => `Record-Route: ${route}`));\n        // Send and return the response\n        const response = super.accept(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        if (options.body) {\n            // Update dialog signaling state with offer/answer in body\n            this.dialog.signalingStateTransition(options.body);\n        }\n        // Update dialog\n        this.dialog.reConfirm();\n        return result;\n    }\n    /**\n     * Update the dialog signaling state on a 1xx response.\n     * @param options - Progress options bucket.\n     */\n    progress(options = { statusCode: 180 }) {\n        // Send and return the response\n        const response = super.progress(options);\n        const session = this.dialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        // Update dialog signaling state\n        if (options.body) {\n            this.dialog.signalingStateTransition(options.body);\n        }\n        return result;\n    }\n    /**\n     * TODO: Not Yet Supported\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    redirect(contacts, options = { statusCode: 302 }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        throw new Error(\"Unimplemented.\");\n    }\n    /**\n     * 3.1 Background on Re-INVITE Handling by UASs\n     * An error response to a re-INVITE has the following semantics.  As\n     * specified in Section 12.2.2 of RFC 3261 [RFC3261], if a re-INVITE is\n     * rejected, no state changes are performed.\n     * https://tools.ietf.org/html/rfc6141#section-3.1\n     * @param options - Reject options bucket.\n     */\n    reject(options = { statusCode: 488 }) {\n        this.dialog.signalingStateRollback();\n        this.dialog.reinviteUserAgentServer = undefined; // ACK will be handled by transaction\n        return super.reject(options);\n    }\n}\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * REFER UAC.\n * @public\n */\nexport class ReferUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.REFER, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction instanceOfSessionDialog(object) {\n    return object.userAgentCore !== undefined;\n}\n/**\n * REFER UAS.\n * @public\n */\nexport class ReferUserAgentServer extends UserAgentServer {\n    /**\n     * REFER UAS constructor.\n     * @param dialogOrCore - Dialog for in dialog REFER, UserAgentCore for out of dialog REFER.\n     * @param message - Incoming REFER request message.\n     */\n    constructor(dialogOrCore, message, delegate) {\n        const userAgentCore = instanceOfSessionDialog(dialogOrCore) ? dialogOrCore.userAgentCore : dialogOrCore;\n        super(NonInviteServerTransaction, userAgentCore, message, delegate);\n    }\n}\n","import { Dialog } from \"../dialogs/dialog.js\";\nimport { SessionDialog } from \"../dialogs/session-dialog.js\";\nimport { TransactionStateError } from \"../exceptions/transaction-state-error.js\";\nimport { SignalingState } from \"../session/session.js\";\nimport { InviteServerTransaction } from \"../transactions/invite-server-transaction.js\";\nimport { AllowedMethods } from \"../user-agent-core/allowed-methods.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * INVITE UAS.\n * @remarks\n * 13 Initiating a Session\n * https://tools.ietf.org/html/rfc3261#section-13\n * 13.1 Overview\n * https://tools.ietf.org/html/rfc3261#section-13.1\n * 13.3 UAS Processing\n * https://tools.ietf.org/html/rfc3261#section-13.3\n * @public\n */\nexport class InviteUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(InviteServerTransaction, core, message, delegate);\n        this.core = core;\n    }\n    dispose() {\n        if (this.earlyDialog) {\n            this.earlyDialog.dispose();\n        }\n        super.dispose();\n    }\n    /**\n     * 13.3.1.4 The INVITE is Accepted\n     * The UAS core generates a 2xx response.  This response establishes a\n     * dialog, and therefore follows the procedures of Section 12.1.1 in\n     * addition to those of Section 8.2.6.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n     * @param options - Accept options bucket.\n     */\n    accept(options = { statusCode: 200 }) {\n        if (!this.acceptable) {\n            throw new TransactionStateError(`${this.message.method} not acceptable in state ${this.transaction.state}.`);\n        }\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.confirmedDialog) {\n            if (this.earlyDialog) {\n                this.earlyDialog.confirm();\n                this.confirmedDialog = this.earlyDialog;\n                this.earlyDialog = undefined;\n            }\n            else {\n                const transaction = this.transaction;\n                if (!(transaction instanceof InviteServerTransaction)) {\n                    throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n                }\n                const state = Dialog.initialDialogStateForUserAgentServer(this.message, this.toTag);\n                this.confirmedDialog = new SessionDialog(transaction, this.core, state);\n            }\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header) => `Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact.toString()}`;\n        // A 2xx response to an INVITE SHOULD contain the Allow header field and\n        // the Supported header field, and MAY contain the Accept header field.\n        // Including these header fields allows the UAC to determine the\n        // features and extensions supported by the UAS for the duration of the\n        // call, without probing.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        // FIXME: TODO: This should not be hard coded.\n        const allowHeader = \"Allow: \" + AllowedMethods.toString();\n        // FIXME: TODO: Supported header (see reply())\n        // FIXME: TODO: Accept header\n        // If the INVITE request contained an offer, and the UAS had not yet\n        // sent an answer, the 2xx MUST contain an answer.  If the INVITE did\n        // not contain an offer, the 2xx MUST contain an offer if the UAS had\n        // not yet sent an offer.\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!options.body) {\n            if (this.confirmedDialog.signalingState === SignalingState.Stable) {\n                options.body = this.confirmedDialog.answer; // resend the answer sent in provisional response\n            }\n            else if (this.confirmedDialog.signalingState === SignalingState.Initial ||\n                this.confirmedDialog.signalingState === SignalingState.HaveRemoteOffer) {\n                throw new Error(\"Response must have a body.\");\n            }\n        }\n        options.statusCode = options.statusCode || 200;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.accept(options);\n        const session = this.confirmedDialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        // Update dialog signaling state\n        if (options.body) {\n            // Once the UAS has sent or received an answer to the initial\n            // offer, it MUST NOT generate subsequent offers in any responses\n            // to the initial INVITE.  This means that a UAS based on this\n            // specification alone can never generate subsequent offers until\n            // completion of the initial transaction.\n            // https://tools.ietf.org/html/rfc3261#section-13.2.1\n            if (this.confirmedDialog.signalingState !== SignalingState.Stable) {\n                this.confirmedDialog.signalingStateTransition(options.body);\n            }\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.1 Progress\n     * If the UAS is not able to answer the invitation immediately, it can\n     * choose to indicate some kind of progress to the UAC (for example, an\n     * indication that a phone is ringing).  This is accomplished with a\n     * provisional response between 101 and 199.  These provisional\n     * responses establish early dialogs and therefore follow the procedures\n     * of Section 12.1.1 in addition to those of Section 8.2.6.  A UAS MAY\n     * send as many provisional responses as it likes.  Each of these MUST\n     * indicate the same dialog ID.  However, these will not be delivered\n     * reliably.\n     *\n     * If the UAS desires an extended period of time to answer the INVITE,\n     * it will need to ask for an \"extension\" in order to prevent proxies\n     * from canceling the transaction.  A proxy has the option of canceling\n     * a transaction when there is a gap of 3 minutes between responses in a\n     * transaction.  To prevent cancellation, the UAS MUST send a non-100\n     * provisional response at every minute, to handle the possibility of\n     * lost provisional responses.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.1\n     * @param options - Progress options bucket.\n     */\n    progress(options = { statusCode: 180 }) {\n        if (!this.progressable) {\n            throw new TransactionStateError(`${this.message.method} not progressable in state ${this.transaction.state}.`);\n        }\n        // This response establishes a dialog...\n        // https://tools.ietf.org/html/rfc3261#section-13.3.1.4\n        if (!this.earlyDialog) {\n            const transaction = this.transaction;\n            if (!(transaction instanceof InviteServerTransaction)) {\n                throw new Error(\"Transaction not instance of InviteClientTransaction.\");\n            }\n            const state = Dialog.initialDialogStateForUserAgentServer(this.message, this.toTag, true);\n            this.earlyDialog = new SessionDialog(transaction, this.core, state);\n        }\n        // When a UAS responds to a request with a response that establishes a\n        // dialog (such as a 2xx to INVITE), the UAS MUST copy all Record-Route\n        // header field values from the request into the response (including the\n        // URIs, URI parameters, and any Record-Route header field parameters,\n        // whether they are known or unknown to the UAS) and MUST maintain the\n        // order of those values.  The UAS MUST add a Contact header field to\n        // the response.  The Contact header field contains an address where the\n        // UAS would like to be contacted for subsequent requests in the dialog\n        // (which includes the ACK for a 2xx response in the case of an INVITE).\n        // Generally, the host portion of this URI is the IP address or FQDN of\n        // the host.  The URI provided in the Contact header field MUST be a SIP\n        // or SIPS URI.  If the request that initiated the dialog contained a\n        // SIPS URI in the Request-URI or in the top Record-Route header field\n        // value, if there was any, or the Contact header field if there was no\n        // Record-Route header field, the Contact header field in the response\n        // MUST be a SIPS URI.  The URI SHOULD have global scope (that is, the\n        // same URI can be used in messages outside this dialog).  The same way,\n        // the scope of the URI in the Contact header field of the INVITE is not\n        // limited to this dialog either.  It can therefore be used in messages\n        // to the UAC even outside this dialog.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.1\n        const recordRouteHeader = this.message.getHeaders(\"record-route\").map((header) => `Record-Route: ${header}`);\n        const contactHeader = `Contact: ${this.core.configuration.contact}`;\n        options.extraHeaders = options.extraHeaders || [];\n        options.extraHeaders = options.extraHeaders.concat(recordRouteHeader);\n        options.extraHeaders.push(contactHeader);\n        const response = super.progress(options);\n        const session = this.earlyDialog;\n        const result = Object.assign(Object.assign({}, response), { session });\n        // Update dialog signaling state\n        if (options.body) {\n            // Once the UAS has sent or received an answer to the initial\n            // offer, it MUST NOT generate subsequent offers in any responses\n            // to the initial INVITE.  This means that a UAS based on this\n            // specification alone can never generate subsequent offers until\n            // completion of the initial transaction.\n            // https://tools.ietf.org/html/rfc3261#section-13.2.1\n            if (this.earlyDialog.signalingState !== SignalingState.Stable) {\n                this.earlyDialog.signalingStateTransition(options.body);\n            }\n        }\n        return result;\n    }\n    /**\n     * 13.3.1.2 The INVITE is Redirected\n     * If the UAS decides to redirect the call, a 3xx response is sent.  A\n     * 300 (Multiple Choices), 301 (Moved Permanently) or 302 (Moved\n     * Temporarily) response SHOULD contain a Contact header field\n     * containing one or more URIs of new addresses to be tried.  The\n     * response is passed to the INVITE server transaction, which will deal\n     * with its retransmissions.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.2\n     * @param contacts - Contacts to redirect to.\n     * @param options - Redirect options bucket.\n     */\n    redirect(contacts, options = { statusCode: 302 }) {\n        return super.redirect(contacts, options);\n    }\n    /**\n     * 13.3.1.3 The INVITE is Rejected\n     * A common scenario occurs when the callee is currently not willing or\n     * able to take additional calls at this end system.  A 486 (Busy Here)\n     * SHOULD be returned in such a scenario.\n     * https://tools.ietf.org/html/rfc3261#section-13.3.1.3\n     * @param options - Reject options bucket.\n     */\n    reject(options = { statusCode: 486 }) {\n        return super.reject(options);\n    }\n}\n","import { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * PUBLISH UAC.\n * @public\n */\nexport class PublishUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(NonInviteClientTransaction, core, message, delegate);\n    }\n}\n","import { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * REGISTER UAC.\n * @public\n */\nexport class RegisterUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        super(NonInviteClientTransaction, core, message, delegate);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * REGISTER UAS.\n * @public\n */\nexport class RegisterUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(NonInviteServerTransaction, core, message, delegate);\n        this.core = core;\n    }\n}\n","import { SubscriptionDialog } from \"../dialogs/subscription-dialog.js\";\nimport { SubscriptionState } from \"../subscription/subscription.js\";\nimport { Timers } from \"../timers.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * SUBSCRIBE UAC.\n * @remarks\n * 4.1.  Subscriber Behavior\n * https://tools.ietf.org/html/rfc6665#section-4.1\n *\n * User agent client for installation of a single subscription per SUBSCRIBE request.\n * TODO: Support for installation of multiple subscriptions on forked SUBSCRIBE requests.\n * @public\n */\nexport class SubscribeUserAgentClient extends UserAgentClient {\n    constructor(core, message, delegate) {\n        // Get event from request message.\n        const event = message.getHeader(\"Event\");\n        if (!event) {\n            throw new Error(\"Event undefined\");\n        }\n        // Get expires from request message.\n        const expires = message.getHeader(\"Expires\");\n        if (!expires) {\n            throw new Error(\"Expires undefined\");\n        }\n        super(NonInviteClientTransaction, core, message, delegate);\n        this.delegate = delegate;\n        // FIXME: Subscriber id should also be matching on event id.\n        this.subscriberId = message.callId + message.fromTag + event;\n        this.subscriptionExpiresRequested = this.subscriptionExpires = Number(expires);\n        this.subscriptionEvent = event;\n        this.subscriptionState = SubscriptionState.NotifyWait;\n        // Start waiting for a NOTIFY we can use to create a subscription.\n        this.waitNotifyStart();\n    }\n    /**\n     * Destructor.\n     * Note that Timer N may live on waiting for an initial NOTIFY and\n     * the delegate may still receive that NOTIFY. If you don't want\n     * that behavior then either clear the delegate so the delegate\n     * doesn't get called (a 200 will be sent in response to the NOTIFY)\n     * or call `waitNotifyStop` which will clear Timer N and remove this\n     * UAC from the core (a 481 will be sent in response to the NOTIFY).\n     */\n    dispose() {\n        super.dispose();\n    }\n    /**\n     * Handle out of dialog NOTIFY associated with SUBSCRIBE request.\n     * This is the first NOTIFY received after the SUBSCRIBE request.\n     * @param uas - User agent server handling the subscription creating NOTIFY.\n     */\n    onNotify(uas) {\n        // NOTIFY requests are matched to such SUBSCRIBE requests if they\n        // contain the same \"Call-ID\", a \"To\" header field \"tag\" parameter that\n        // matches the \"From\" header field \"tag\" parameter of the SUBSCRIBE\n        // request, and the same \"Event\" header field.  Rules for comparisons of\n        // the \"Event\" header fields are described in Section 8.2.1.\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        const event = uas.message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.logger.warn(`Failed to parse event.`);\n            uas.reject({ statusCode: 489 });\n            return;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = uas.message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.logger.warn(\"Failed to parse subscription state.\");\n            uas.reject({ statusCode: 489 });\n            return;\n        }\n        // Validate subscription state.\n        const state = subscriptionState.state;\n        switch (state) {\n            case \"pending\":\n                break;\n            case \"active\":\n                break;\n            case \"terminated\":\n                break;\n            default:\n                this.logger.warn(`Invalid subscription state ${state}`);\n                uas.reject({ statusCode: 489 });\n                return;\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (state !== \"terminated\") {\n            // The Contact header field MUST be present and contain exactly one SIP\n            // or SIPS URI in any request that can result in the establishment of a\n            // dialog.\n            // https://tools.ietf.org/html/rfc3261#section-8.1.1.8\n            const contact = uas.message.parseHeader(\"contact\");\n            if (!contact) {\n                this.logger.warn(\"Failed to parse contact.\");\n                uas.reject({ statusCode: 489 });\n                return;\n            }\n        }\n        // In accordance with the rules for proxying non-INVITE requests as\n        // defined in [RFC3261], successful SUBSCRIBE requests will receive only\n        // one 200-class response; however, due to forking, the subscription may\n        // have been accepted by multiple nodes.  The subscriber MUST therefore\n        // be prepared to receive NOTIFY requests with \"From:\" tags that differ\n        // from the \"To:\" tag received in the SUBSCRIBE 200-class response.\n        //\n        // If multiple NOTIFY requests are received in different dialogs in\n        // response to a single SUBSCRIBE request, each dialog represents a\n        // different destination to which the SUBSCRIBE request was forked.\n        // Subscriber handling in such situations varies by event package; see\n        // Section 5.4.9 for details.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.4\n        // Each event package MUST specify whether forked SUBSCRIBE requests are\n        // allowed to install multiple subscriptions.\n        //\n        // If such behavior is not allowed, the first potential dialog-\n        // establishing message will create a dialog.  All subsequent NOTIFY\n        // requests that correspond to the SUBSCRIBE request (i.e., have\n        // matching \"To\", \"From\", \"Call-ID\", and \"Event\" header fields, as well\n        // as \"From\" header field \"tag\" parameter and \"Event\" header field \"id\"\n        // parameter) but that do not match the dialog would be rejected with a\n        // 481 response.  Note that the 200-class response to the SUBSCRIBE\n        // request can arrive after a matching NOTIFY request has been received;\n        // such responses might not correlate to the same dialog established by\n        // the NOTIFY request.  Except as required to complete the SUBSCRIBE\n        // transaction, such non-matching 200-class responses are ignored.\n        //\n        // If installing of multiple subscriptions by way of a single forked\n        // SUBSCRIBE request is allowed, the subscriber establishes a new dialog\n        // towards each notifier by returning a 200-class response to each\n        // NOTIFY request.  Each dialog is then handled as its own entity and is\n        // refreshed independently of the other dialogs.\n        //\n        // In the case that multiple subscriptions are allowed, the event\n        // package MUST specify whether merging of the notifications to form a\n        // single state is required, and how such merging is to be performed.\n        // Note that it is possible that some event packages may be defined in\n        // such a way that each dialog is tied to a mutually exclusive state\n        // that is unaffected by the other dialogs; this MUST be clearly stated\n        // if it is the case.\n        // https://tools.ietf.org/html/rfc6665#section-5.4.9\n        // *** NOTE: This implementation is only for event packages which\n        // do not allow forked requests to install multiple subscriptions.\n        // As such and in accordance with the specification, we stop waiting\n        // and any future NOTIFY requests will be rejected with a 481.\n        if (this.dialog) {\n            throw new Error(\"Dialog already created. This implementation only supports install of single subscriptions.\");\n        }\n        this.waitNotifyStop();\n        // Update expires.\n        this.subscriptionExpires = subscriptionState.expires\n            ? Math.min(this.subscriptionExpires, Math.max(subscriptionState.expires, 0))\n            : this.subscriptionExpires;\n        // Update subscription state.\n        switch (state) {\n            case \"pending\":\n                this.subscriptionState = SubscriptionState.Pending;\n                break;\n            case \"active\":\n                this.subscriptionState = SubscriptionState.Active;\n                break;\n            case \"terminated\":\n                this.subscriptionState = SubscriptionState.Terminated;\n                break;\n            default:\n                throw new Error(`Unrecognized state ${state}.`);\n        }\n        // Dialogs usages are created upon completion of a NOTIFY transaction\n        // for a new subscription, unless the NOTIFY request contains a\n        // \"Subscription-State\" of \"terminated.\"\n        // https://tools.ietf.org/html/rfc6665#section-4.4.1\n        if (this.subscriptionState !== SubscriptionState.Terminated) {\n            // Because the dialog usage is established by the NOTIFY request, the\n            // route set at the subscriber is taken from the NOTIFY request itself,\n            // as opposed to the route set present in the 200-class response to the\n            // SUBSCRIBE request.\n            // https://tools.ietf.org/html/rfc6665#section-4.4.1\n            const dialogState = SubscriptionDialog.initialDialogStateForSubscription(this.message, uas.message);\n            // Subscription Initiated! :)\n            this.dialog = new SubscriptionDialog(this.subscriptionEvent, this.subscriptionExpires, this.subscriptionState, this.core, dialogState);\n        }\n        // Delegate.\n        if (this.delegate && this.delegate.onNotify) {\n            const request = uas;\n            const subscription = this.dialog;\n            this.delegate.onNotify({ request, subscription });\n        }\n        else {\n            uas.accept();\n        }\n    }\n    waitNotifyStart() {\n        if (!this.N) {\n            // Add ourselves to the core's subscriber map.\n            // This allows the core to route out of dialog NOTIFY messages to us.\n            this.core.subscribers.set(this.subscriberId, this);\n            this.N = setTimeout(() => this.timerN(), Timers.TIMER_N);\n        }\n    }\n    waitNotifyStop() {\n        if (this.N) {\n            // Remove ourselves to the core's subscriber map.\n            // Any future out of dialog NOTIFY messages will be rejected with a 481.\n            this.core.subscribers.delete(this.subscriberId);\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */\n    receiveResponse(message) {\n        if (!this.authenticationGuard(message)) {\n            return;\n        }\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            // The \"Expires\" values present in SUBSCRIBE 200-class responses behave\n            // in the same way as they do in REGISTER responses: the server MAY\n            // shorten the interval but MUST NOT lengthen it.\n            //\n            //    If the duration specified in a SUBSCRIBE request is unacceptably\n            //    short, the notifier may be able to send a 423 response, as\n            //    described earlier in this section.\n            //\n            // 200-class responses to SUBSCRIBE requests will not generally contain\n            // any useful information beyond subscription duration; their primary\n            // purpose is to serve as a reliability mechanism.  State information\n            // will be communicated via a subsequent NOTIFY request from the\n            // notifier.\n            // https://tools.ietf.org/html/rfc6665#section-4.2.1.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) {\n                this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            }\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (subscriptionExpiresReceived > this.subscriptionExpiresRequested) {\n                    this.logger.warn(\"Expires header in a 200-class response to SUBSCRIBE with a higher value than the one in the request\");\n                }\n                if (subscriptionExpiresReceived < this.subscriptionExpires) {\n                    this.subscriptionExpires = subscriptionExpiresReceived;\n                }\n            }\n            // If a NOTIFY arrived before 200-class response a dialog may have been created.\n            // Updated the dialogs expiration only if this indicates earlier expiration.\n            if (this.dialog) {\n                if (this.dialog.subscriptionExpires > this.subscriptionExpires) {\n                    this.dialog.subscriptionExpires = this.subscriptionExpires;\n                }\n            }\n        }\n        if (message.statusCode && message.statusCode >= 300 && message.statusCode < 700) {\n            this.waitNotifyStop(); // No NOTIFY will be sent after a negative final response.\n        }\n        super.receiveResponse(message);\n    }\n    /**\n     * To ensure that subscribers do not wait indefinitely for a\n     * subscription to be established, a subscriber starts a Timer N, set to\n     * 64*T1, when it sends a SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription failed, and cleans up any state associated with the\n     * subscription attempt.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.4\n     */\n    timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE user agent client. Timed out waiting for NOTIFY.`);\n        this.waitNotifyStop();\n        if (this.delegate && this.delegate.onNotifyTimeout) {\n            this.delegate.onNotifyTimeout();\n        }\n    }\n}\n","import { NameAddrHeader } from \"../../grammar/name-addr-header.js\";\nimport { C } from \"../messages/methods/constants.js\";\nimport { SubscriptionState } from \"../subscription/subscription.js\";\nimport { Timers } from \"../timers.js\";\nimport { AllowedMethods } from \"../user-agent-core/allowed-methods.js\";\nimport { NotifyUserAgentServer } from \"../user-agents/notify-user-agent-server.js\";\nimport { ReSubscribeUserAgentClient } from \"../user-agents/re-subscribe-user-agent-client.js\";\nimport { Dialog } from \"./dialog.js\";\n/**\n * Subscription Dialog.\n * @remarks\n * SIP-Specific Event Notification\n *\n * Abstract\n *\n *    This document describes an extension to the Session Initiation\n *    Protocol (SIP) defined by RFC 3261.  The purpose of this extension is\n *    to provide an extensible framework by which SIP nodes can request\n *    notification from remote nodes indicating that certain events have\n *    occurred.\n *\n *    Note that the event notification mechanisms defined herein are NOT\n *    intended to be a general-purpose infrastructure for all classes of\n *    event subscription and notification.\n *\n *    This document represents a backwards-compatible improvement on the\n *    original mechanism described by RFC 3265, taking into account several\n *    years of implementation experience.  Accordingly, this document\n *    obsoletes RFC 3265.  This document also updates RFC 4660 slightly to\n *    accommodate some small changes to the mechanism that were discussed\n *    in that document.\n *\n *  https://tools.ietf.org/html/rfc6665\n * @public\n */\nexport class SubscriptionDialog extends Dialog {\n    constructor(subscriptionEvent, subscriptionExpires, subscriptionState, core, state, delegate) {\n        super(core, state);\n        this.delegate = delegate;\n        this._autoRefresh = false;\n        this._subscriptionEvent = subscriptionEvent;\n        this._subscriptionExpires = subscriptionExpires;\n        this._subscriptionExpiresInitial = subscriptionExpires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        this._subscriptionRefresh = undefined;\n        this._subscriptionRefreshLastSet = undefined;\n        this._subscriptionState = subscriptionState;\n        this.logger = core.loggerFactory.getLogger(\"sip.subscribe-dialog\");\n        this.logger.log(`SUBSCRIBE dialog ${this.id} constructed`);\n    }\n    /**\n     * When a UAC receives a response that establishes a dialog, it\n     * constructs the state of the dialog.  This state MUST be maintained\n     * for the duration of the dialog.\n     * https://tools.ietf.org/html/rfc3261#section-12.1.2\n     * @param outgoingRequestMessage - Outgoing request message for dialog.\n     * @param incomingResponseMessage - Incoming response message creating dialog.\n     */\n    static initialDialogStateForSubscription(outgoingSubscribeRequestMessage, incomingNotifyRequestMessage) {\n        // If the request was sent over TLS, and the Request-URI contained a\n        // SIPS URI, the \"secure\" flag is set to TRUE.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const secure = false; // FIXME: Currently no support for TLS.\n        // The route set MUST be set to the list of URIs in the Record-Route\n        // header field from the response, taken in reverse order and preserving\n        // all URI parameters.  If no Record-Route header field is present in\n        // the response, the route set MUST be set to the empty set.  This route\n        // set, even if empty, overrides any pre-existing route set for future\n        // requests in this dialog.  The remote target MUST be set to the URI\n        // from the Contact header field of the response.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const routeSet = incomingNotifyRequestMessage.getHeaders(\"record-route\");\n        const contact = incomingNotifyRequestMessage.parseHeader(\"contact\");\n        if (!contact) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Contact undefined.\");\n        }\n        if (!(contact instanceof NameAddrHeader)) {\n            throw new Error(\"Contact not instance of NameAddrHeader.\");\n        }\n        const remoteTarget = contact.uri;\n        // The local sequence number MUST be set to the value of the sequence\n        // number in the CSeq header field of the request.  The remote sequence\n        // number MUST be empty (it is established when the remote UA sends a\n        // request within the dialog).  The call identifier component of the\n        // dialog ID MUST be set to the value of the Call-ID in the request.\n        // The local tag component of the dialog ID MUST be set to the tag in\n        // the From field in the request, and the remote tag component of the\n        // dialog ID MUST be set to the tag in the To field of the response.  A\n        // UAC MUST be prepared to receive a response without a tag in the To\n        // field, in which case the tag is considered to have a value of null.\n        //\n        //    This is to maintain backwards compatibility with RFC 2543, which\n        //    did not mandate To tags.\n        //\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        const localSequenceNumber = outgoingSubscribeRequestMessage.cseq;\n        const remoteSequenceNumber = undefined;\n        const callId = outgoingSubscribeRequestMessage.callId;\n        const localTag = outgoingSubscribeRequestMessage.fromTag;\n        const remoteTag = incomingNotifyRequestMessage.fromTag;\n        if (!callId) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"Call id undefined.\");\n        }\n        if (!localTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From tag undefined.\");\n        }\n        if (!remoteTag) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To tag undefined.\"); // FIXME: No backwards compatibility with RFC 2543\n        }\n        // The remote URI MUST be set to the URI in the To field, and the local\n        // URI MUST be set to the URI in the From field.\n        // https://tools.ietf.org/html/rfc3261#section-12.1.2\n        if (!outgoingSubscribeRequestMessage.from) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"From undefined.\");\n        }\n        if (!outgoingSubscribeRequestMessage.to) {\n            // TODO: Review to make sure this will never happen\n            throw new Error(\"To undefined.\");\n        }\n        const localURI = outgoingSubscribeRequestMessage.from.uri;\n        const remoteURI = outgoingSubscribeRequestMessage.to.uri;\n        // A dialog can also be in the \"early\" state, which occurs when it is\n        // created with a provisional response, and then transition to the\n        // \"confirmed\" state when a 2xx final response arrives.\n        // https://tools.ietf.org/html/rfc3261#section-12\n        const early = false;\n        const dialogState = {\n            id: callId + localTag + remoteTag,\n            early,\n            callId,\n            localTag,\n            remoteTag,\n            localSequenceNumber,\n            remoteSequenceNumber,\n            localURI,\n            remoteURI,\n            remoteTarget,\n            routeSet,\n            secure\n        };\n        return dialogState;\n    }\n    dispose() {\n        super.dispose();\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        this.refreshTimerClear();\n        this.logger.log(`SUBSCRIBE dialog ${this.id} destroyed`);\n    }\n    get autoRefresh() {\n        return this._autoRefresh;\n    }\n    set autoRefresh(autoRefresh) {\n        this._autoRefresh = true;\n        this.refreshTimerSet();\n    }\n    get subscriptionEvent() {\n        return this._subscriptionEvent;\n    }\n    /** Number of seconds until subscription expires. */\n    get subscriptionExpires() {\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionExpiresLastSet;\n        const secondsUntilExpires = this._subscriptionExpires - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    set subscriptionExpires(expires) {\n        if (expires < 0) {\n            throw new Error(\"Expires must be greater than or equal to zero.\");\n        }\n        this._subscriptionExpires = expires;\n        this._subscriptionExpiresLastSet = Math.floor(Date.now() / 1000);\n        if (this.autoRefresh) {\n            const refresh = this.subscriptionRefresh;\n            if (refresh === undefined || refresh >= expires) {\n                this.refreshTimerSet();\n            }\n        }\n    }\n    get subscriptionExpiresInitial() {\n        return this._subscriptionExpiresInitial;\n    }\n    /** Number of seconds until subscription auto refresh. */\n    get subscriptionRefresh() {\n        if (this._subscriptionRefresh === undefined || this._subscriptionRefreshLastSet === undefined) {\n            return undefined;\n        }\n        const secondsSinceLastSet = Math.floor(Date.now() / 1000) - this._subscriptionRefreshLastSet;\n        const secondsUntilExpires = this._subscriptionRefresh - secondsSinceLastSet;\n        return Math.max(secondsUntilExpires, 0);\n    }\n    get subscriptionState() {\n        return this._subscriptionState;\n    }\n    /**\n     * Receive in dialog request message from transport.\n     * @param message -  The incoming request message.\n     */\n    receiveRequest(message) {\n        this.logger.log(`SUBSCRIBE dialog ${this.id} received ${message.method} request`);\n        // Request within a dialog out of sequence guard.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        if (!this.sequenceGuard(message)) {\n            this.logger.log(`SUBSCRIBE dialog ${this.id} rejected out of order ${message.method} request.`);\n            return;\n        }\n        // Request within a dialog common processing.\n        // https://tools.ietf.org/html/rfc3261#section-12.2.2\n        super.receiveRequest(message);\n        // Switch on method and then delegate.\n        switch (message.method) {\n            case C.NOTIFY:\n                this.onNotify(message);\n                break;\n            default:\n                this.logger.log(`SUBSCRIBE dialog ${this.id} received unimplemented ${message.method} request`);\n                this.core.replyStateless(message, { statusCode: 501 });\n                break;\n        }\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */\n    refresh() {\n        const allowHeader = \"Allow: \" + AllowedMethods.toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: \" + this.subscriptionExpiresInitial);\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * 4.1.2.2.  Refreshing of Subscriptions\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     * @param delegate - Delegate to handle responses.\n     * @param options - Options bucket.\n     */\n    subscribe(delegate, options = {}) {\n        var _a;\n        if (this.subscriptionState !== SubscriptionState.Pending && this.subscriptionState !== SubscriptionState.Active) {\n            // FIXME: This needs to be a proper exception\n            throw new Error(`Invalid state ${this.subscriptionState}. May only re-subscribe while in state \"pending\" or \"active\".`);\n        }\n        this.logger.log(`SUBSCRIBE dialog ${this.id} sending SUBSCRIBE request`);\n        const uac = new ReSubscribeUserAgentClient(this, delegate, options);\n        // Abort any outstanding timer (as it would otherwise become guaranteed to terminate us).\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        if (!((_a = options.extraHeaders) === null || _a === void 0 ? void 0 : _a.includes(\"Expires: 0\"))) {\n            // When refreshing a subscription, a subscriber starts Timer N, set to\n            // 64*T1, when it sends the SUBSCRIBE request.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n            this.N = setTimeout(() => this.timerN(), Timers.TIMER_N);\n        }\n        return uac;\n    }\n    /**\n     * 4.4.1.  Dialog Creation and Termination\n     * A subscription is destroyed after a notifier sends a NOTIFY request\n     * with a \"Subscription-State\" of \"terminated\", or in certain error\n     * situations described elsewhere in this document.\n     * https://tools.ietf.org/html/rfc6665#section-4.4.1\n     */\n    terminate() {\n        this.stateTransition(SubscriptionState.Terminated);\n        this.onTerminated();\n    }\n    /**\n     * 4.1.2.3.  Unsubscribing\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.3\n     */\n    unsubscribe() {\n        const allowHeader = \"Allow: \" + AllowedMethods.toString();\n        const options = {};\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.extraHeaders.push(allowHeader);\n        options.extraHeaders.push(\"Event: \" + this.subscriptionEvent);\n        options.extraHeaders.push(\"Expires: 0\");\n        options.extraHeaders.push(\"Contact: \" + this.core.configuration.contact.toString());\n        return this.subscribe(undefined, options);\n    }\n    /**\n     * Handle in dialog NOTIFY requests.\n     * This does not include the first NOTIFY which created the dialog.\n     * @param message - The incoming NOTIFY request message.\n     */\n    onNotify(message) {\n        // If, for some reason, the event package designated in the \"Event\"\n        // header field of the NOTIFY request is not supported, the subscriber\n        // will respond with a 489 (Bad Event) response.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const event = message.parseHeader(\"Event\").event;\n        if (!event || event !== this.subscriptionEvent) {\n            this.core.replyStateless(message, { statusCode: 489 });\n            return;\n        }\n        // In the state diagram, \"Re-subscription times out\" means that an\n        // attempt to refresh or update the subscription using a new SUBSCRIBE\n        // request does not result in a NOTIFY request before the corresponding\n        // Timer N expires.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.2\n        if (this.N) {\n            clearTimeout(this.N);\n            this.N = undefined;\n        }\n        // NOTIFY requests MUST contain \"Subscription-State\" header fields that\n        // indicate the status of the subscription.\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        const subscriptionState = message.parseHeader(\"Subscription-State\");\n        if (!subscriptionState || !subscriptionState.state) {\n            this.core.replyStateless(message, { statusCode: 489 });\n            return;\n        }\n        const state = subscriptionState.state;\n        const expires = subscriptionState.expires ? Math.max(subscriptionState.expires, 0) : undefined;\n        // Update our state and expiration.\n        switch (state) {\n            case \"pending\":\n                this.stateTransition(SubscriptionState.Pending, expires);\n                break;\n            case \"active\":\n                this.stateTransition(SubscriptionState.Active, expires);\n                break;\n            case \"terminated\":\n                this.stateTransition(SubscriptionState.Terminated, expires);\n                break;\n            default:\n                this.logger.warn(\"Unrecognized subscription state.\");\n                break;\n        }\n        // Delegate remainder of NOTIFY handling.\n        const uas = new NotifyUserAgentServer(this, message);\n        if (this.delegate && this.delegate.onNotify) {\n            this.delegate.onNotify(uas);\n        }\n        else {\n            uas.accept();\n        }\n    }\n    onRefresh(request) {\n        if (this.delegate && this.delegate.onRefresh) {\n            this.delegate.onRefresh(request);\n        }\n    }\n    onTerminated() {\n        if (this.delegate && this.delegate.onTerminated) {\n            this.delegate.onTerminated();\n        }\n    }\n    refreshTimerClear() {\n        if (this.refreshTimer) {\n            clearTimeout(this.refreshTimer);\n            this.refreshTimer = undefined;\n        }\n    }\n    refreshTimerSet() {\n        this.refreshTimerClear();\n        if (this.autoRefresh && this.subscriptionExpires > 0) {\n            const refresh = this.subscriptionExpires * 900;\n            this._subscriptionRefresh = Math.floor(refresh / 1000);\n            this._subscriptionRefreshLastSet = Math.floor(Date.now() / 1000);\n            this.refreshTimer = setTimeout(() => {\n                this.refreshTimer = undefined;\n                this._subscriptionRefresh = undefined;\n                this._subscriptionRefreshLastSet = undefined;\n                this.onRefresh(this.refresh());\n            }, refresh);\n        }\n    }\n    stateTransition(newState, newExpires) {\n        // Assert valid state transitions.\n        const invalidStateTransition = () => {\n            this.logger.warn(`Invalid subscription state transition from ${this.subscriptionState} to ${newState}`);\n        };\n        switch (newState) {\n            case SubscriptionState.Initial:\n                invalidStateTransition();\n                return;\n            case SubscriptionState.NotifyWait:\n                invalidStateTransition();\n                return;\n            case SubscriptionState.Pending:\n                if (this.subscriptionState !== SubscriptionState.NotifyWait &&\n                    this.subscriptionState !== SubscriptionState.Pending) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case SubscriptionState.Active:\n                if (this.subscriptionState !== SubscriptionState.NotifyWait &&\n                    this.subscriptionState !== SubscriptionState.Pending &&\n                    this.subscriptionState !== SubscriptionState.Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            case SubscriptionState.Terminated:\n                if (this.subscriptionState !== SubscriptionState.NotifyWait &&\n                    this.subscriptionState !== SubscriptionState.Pending &&\n                    this.subscriptionState !== SubscriptionState.Active) {\n                    invalidStateTransition();\n                    return;\n                }\n                break;\n            default:\n                invalidStateTransition();\n                return;\n        }\n        // If the \"Subscription-State\" value is \"pending\", the subscription has\n        // been received by the notifier, but there is insufficient policy\n        // information to grant or deny the subscription yet.  If the header\n        // field also contains an \"expires\" parameter, the subscriber SHOULD\n        // take it as the authoritative subscription duration and adjust\n        // accordingly.  No further action is necessary on the part of the\n        // subscriber.  The \"retry-after\" and \"reason\" parameters have no\n        // semantics for \"pending\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === SubscriptionState.Pending) {\n            if (newExpires) {\n                this.subscriptionExpires = newExpires;\n            }\n        }\n        // If the \"Subscription-State\" header field value is \"active\", it means\n        // that the subscription has been accepted and (in general) has been\n        // authorized.  If the header field also contains an \"expires\"\n        // parameter, the subscriber SHOULD take it as the authoritative\n        // subscription duration and adjust accordingly.  The \"retry-after\" and\n        // \"reason\" parameters have no semantics for \"active\".\n        // https://tools.ietf.org/html/rfc6665#section-4.1.3\n        if (newState === SubscriptionState.Active) {\n            if (newExpires) {\n                this.subscriptionExpires = newExpires;\n            }\n        }\n        // If the \"Subscription-State\" value is \"terminated\", the subscriber\n        // MUST consider the subscription terminated.  The \"expires\" parameter\n        // has no semantics for \"terminated\" -- notifiers SHOULD NOT include an\n        // \"expires\" parameter on a \"Subscription-State\" header field with a\n        // value of \"terminated\", and subscribers MUST ignore any such\n        // parameter, if present.\n        if (newState === SubscriptionState.Terminated) {\n            this.dispose();\n        }\n        this._subscriptionState = newState;\n    }\n    /**\n     * When refreshing a subscription, a subscriber starts Timer N, set to\n     * 64*T1, when it sends the SUBSCRIBE request.  If this Timer N expires\n     * prior to the receipt of a NOTIFY request, the subscriber considers\n     * the subscription terminated.  If the subscriber receives a success\n     * response to the SUBSCRIBE request that indicates that no NOTIFY\n     * request will be generated -- such as the 204 response defined for use\n     * with the optional extension described in [RFC5839] -- then it MUST\n     * cancel Timer N.\n     * https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n     */\n    timerN() {\n        this.logger.warn(`Timer N expired for SUBSCRIBE dialog. Timed out waiting for NOTIFY.`);\n        if (this.subscriptionState !== SubscriptionState.Terminated) {\n            this.stateTransition(SubscriptionState.Terminated);\n            this.onTerminated();\n        }\n    }\n}\n","/**\n * Subscription state.\n * @remarks\n * https://tools.ietf.org/html/rfc6665#section-4.1.2\n * @public\n */\nexport var SubscriptionState;\n(function (SubscriptionState) {\n    SubscriptionState[\"Initial\"] = \"Initial\";\n    SubscriptionState[\"NotifyWait\"] = \"NotifyWait\";\n    SubscriptionState[\"Pending\"] = \"Pending\";\n    SubscriptionState[\"Active\"] = \"Active\";\n    SubscriptionState[\"Terminated\"] = \"Terminated\";\n})(SubscriptionState = SubscriptionState || (SubscriptionState = {}));\n","import { C } from \"../messages/methods/constants.js\";\nimport { NonInviteClientTransaction } from \"../transactions/non-invite-client-transaction.js\";\nimport { UserAgentClient } from \"./user-agent-client.js\";\n/**\n * Re-SUBSCRIBE UAC.\n * @public\n */\nexport class ReSubscribeUserAgentClient extends UserAgentClient {\n    constructor(dialog, delegate, options) {\n        const message = dialog.createOutgoingRequestMessage(C.SUBSCRIBE, options);\n        super(NonInviteClientTransaction, dialog.userAgentCore, message, delegate);\n        this.dialog = dialog;\n    }\n    waitNotifyStop() {\n        // TODO: Placeholder. Not utilized currently.\n        return;\n    }\n    /**\n     * Receive a response from the transaction layer.\n     * @param message - Incoming response message.\n     */\n    receiveResponse(message) {\n        if (message.statusCode && message.statusCode >= 200 && message.statusCode < 300) {\n            //  The \"Expires\" header field in a 200-class response to SUBSCRIBE\n            //  request indicates the actual duration for which the subscription will\n            //  remain active (unless refreshed).  The received value might be\n            //  smaller than the value indicated in the SUBSCRIBE request but cannot\n            //  be larger; see Section 4.2.1 for details.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.1\n            const expires = message.getHeader(\"Expires\");\n            if (!expires) {\n                this.logger.warn(\"Expires header missing in a 200-class response to SUBSCRIBE\");\n            }\n            else {\n                const subscriptionExpiresReceived = Number(expires);\n                if (this.dialog.subscriptionExpires > subscriptionExpiresReceived) {\n                    this.dialog.subscriptionExpires = subscriptionExpiresReceived;\n                }\n            }\n        }\n        if (message.statusCode && message.statusCode >= 400 && message.statusCode < 700) {\n            // If a SUBSCRIBE request to refresh a subscription receives a 404, 405,\n            // 410, 416, 480-485, 489, 501, or 604 response, the subscriber MUST\n            // consider the subscription terminated.  (See [RFC5057] for further\n            // details and notes about the effect of error codes on dialogs and\n            // usages within dialog, such as subscriptions).  If the subscriber\n            // wishes to re-subscribe to the state, he does so by composing an\n            // unrelated initial SUBSCRIBE request with a freshly generated Call-ID\n            // and a new, unique \"From\" tag (see Section 4.1.2.1).\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n            const errorCodes = [404, 405, 410, 416, 480, 481, 482, 483, 484, 485, 489, 501, 604];\n            if (errorCodes.includes(message.statusCode)) {\n                this.dialog.terminate();\n            }\n            // If a SUBSCRIBE request to refresh a subscription fails with any error\n            // code other than those listed above, the original subscription is\n            // still considered valid for the duration of the most recently known\n            // \"Expires\" value as negotiated by the most recent successful SUBSCRIBE\n            // transaction, or as communicated by a NOTIFY request in its\n            // \"Subscription-State\" header field \"expires\" parameter.\n            // https://tools.ietf.org/html/rfc6665#section-4.1.2.2\n        }\n        super.receiveResponse(message);\n    }\n}\n","import { NonInviteServerTransaction } from \"../transactions/non-invite-server-transaction.js\";\nimport { UserAgentServer } from \"./user-agent-server.js\";\n/**\n * SUBSCRIBE UAS.\n * @public\n */\nexport class SubscribeUserAgentServer extends UserAgentServer {\n    constructor(core, message, delegate) {\n        super(NonInviteServerTransaction, core, message, delegate);\n        this.core = core;\n    }\n}\n","import { EmitterImpl } from \"../../../api/emitter.js\";\nimport { StateTransitionError } from \"../../../api/exceptions/state-transition.js\";\nimport { TransportState } from \"../../../api/transport-state.js\";\nimport { Grammar } from \"../../../grammar/grammar.js\";\n/**\n * Transport for SIP over secure WebSocket (WSS).\n * @public\n */\nexport class Transport {\n    constructor(logger, options) {\n        this._state = TransportState.Disconnected;\n        this.transitioningState = false;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        // logger\n        this.logger = logger;\n        // guard deprecated options (remove this in version 16.x)\n        if (options) {\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            const optionsDeprecated = options;\n            const wsServersDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.wsServers;\n            const maxReconnectionAttemptsDeprecated = optionsDeprecated === null || optionsDeprecated === void 0 ? void 0 : optionsDeprecated.maxReconnectionAttempts;\n            if (wsServersDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"wsServers\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            if (maxReconnectionAttemptsDeprecated !== undefined) {\n                const deprecatedMessage = `The transport option \"maxReconnectionAttempts\" as has apparently been specified and has been deprecated. ` +\n                    \"It will no longer be available starting with SIP.js release 0.16.0. Please update accordingly.\";\n                this.logger.warn(deprecatedMessage);\n            }\n            // hack\n            if (wsServersDeprecated && !options.server) {\n                if (typeof wsServersDeprecated === \"string\") {\n                    options.server = wsServersDeprecated;\n                }\n                if (wsServersDeprecated instanceof Array) {\n                    options.server = wsServersDeprecated[0];\n                }\n            }\n        }\n        // initialize configuration\n        this.configuration = Object.assign(Object.assign({}, Transport.defaultOptions), options);\n        // validate server URL\n        const url = this.configuration.server;\n        const parsed = Grammar.parse(url, \"absoluteURI\");\n        if (parsed === -1) {\n            this.logger.error(`Invalid WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid WebSocket Server URL\");\n        }\n        if (![\"wss\", \"ws\", \"udp\"].includes(parsed.scheme)) {\n            this.logger.error(`Invalid scheme in WebSocket Server URL \"${url}\"`);\n            throw new Error(\"Invalid scheme in WebSocket Server URL\");\n        }\n        this._protocol = parsed.scheme.toUpperCase();\n    }\n    dispose() {\n        return this.disconnect();\n    }\n    /**\n     * The protocol.\n     *\n     * @remarks\n     * Formatted as defined for the Via header sent-protocol transport.\n     * https://tools.ietf.org/html/rfc3261#section-20.42\n     */\n    get protocol() {\n        return this._protocol;\n    }\n    /**\n     * The URL of the WebSocket Server.\n     */\n    get server() {\n        return this.configuration.server;\n    }\n    /**\n     * Transport state.\n     */\n    get state() {\n        return this._state;\n    }\n    /**\n     * Transport state change emitter.\n     */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * The WebSocket.\n     */\n    get ws() {\n        return this._ws;\n    }\n    /**\n     * Connect to network.\n     * Resolves once connected. Otherwise rejects with an Error.\n     */\n    connect() {\n        return this._connect();\n    }\n    /**\n     * Disconnect from network.\n     * Resolves once disconnected. Otherwise rejects with an Error.\n     */\n    disconnect() {\n        return this._disconnect();\n    }\n    /**\n     * Returns true if the `state` equals \"Connected\".\n     * @remarks\n     * This is equivalent to `state === TransportState.Connected`.\n     */\n    isConnected() {\n        return this.state === TransportState.Connected;\n    }\n    /**\n     * Sends a message.\n     * Resolves once message is sent. Otherwise rejects with an Error.\n     * @param message - Message to send.\n     */\n    send(message) {\n        // Error handling is independent of whether the message was a request or\n        // response.\n        //\n        // If the transport user asks for a message to be sent over an\n        // unreliable transport, and the result is an ICMP error, the behavior\n        // depends on the type of ICMP error.  Host, network, port or protocol\n        // unreachable errors, or parameter problem errors SHOULD cause the\n        // transport layer to inform the transport user of a failure in sending.\n        // Source quench and TTL exceeded ICMP errors SHOULD be ignored.\n        //\n        // If the transport user asks for a request to be sent over a reliable\n        // transport, and the result is a connection failure, the transport\n        // layer SHOULD inform the transport user of a failure in sending.\n        // https://tools.ietf.org/html/rfc3261#section-18.4\n        return this._send(message);\n    }\n    _connect() {\n        this.logger.log(`Connecting ${this.server}`);\n        switch (this.state) {\n            case TransportState.Connecting:\n                // If `state` is \"Connecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Connecting));\n                }\n                if (!this.connectPromise) {\n                    throw new Error(\"Connect promise must be defined.\");\n                }\n                return this.connectPromise; // Already connecting\n            case TransportState.Connected:\n                // If `state` is \"Connected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Connecting));\n                }\n                if (this.connectPromise) {\n                    throw new Error(\"Connect promise must not be defined.\");\n                }\n                return Promise.resolve(); // Already connected\n            case TransportState.Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) {\n                    throw new Error(\"Connect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Connecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            case TransportState.Disconnected:\n                // If `state` is \"Disconnected\" `state` MUST transition to \"Connecting\" before returning\n                if (this.connectPromise) {\n                    throw new Error(\"Connect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Connecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        let ws;\n        try {\n            // WebSocket()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/WebSocket\n            ws = new WebSocket(this.server, \"sip\");\n            ws.binaryType = \"arraybuffer\"; // set data type of received binary messages\n            ws.addEventListener(\"close\", (ev) => this.onWebSocketClose(ev, ws));\n            ws.addEventListener(\"error\", (ev) => this.onWebSocketError(ev, ws));\n            ws.addEventListener(\"open\", (ev) => this.onWebSocketOpen(ev, ws));\n            ws.addEventListener(\"message\", (ev) => this.onWebSocketMessage(ev, ws));\n            this._ws = ws;\n        }\n        catch (error) {\n            this._ws = undefined;\n            this.logger.error(\"WebSocket construction failed.\");\n            this.logger.error(error.toString());\n            return new Promise((resolve, reject) => {\n                this.connectResolve = resolve;\n                this.connectReject = reject;\n                // The `state` MUST transition to \"Disconnecting\" or \"Disconnected\" before rejecting\n                this.transitionState(TransportState.Disconnected, error);\n            });\n        }\n        this.connectPromise = new Promise((resolve, reject) => {\n            this.connectResolve = resolve;\n            this.connectReject = reject;\n            this.connectTimeout = setTimeout(() => {\n                this.logger.warn(\"Connect timed out. \" +\n                    \"Exceeded time set in configuration.connectionTimeout: \" +\n                    this.configuration.connectionTimeout +\n                    \"s.\");\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            }, this.configuration.connectionTimeout * 1000);\n        });\n        return this.connectPromise;\n    }\n    _disconnect() {\n        this.logger.log(`Disconnecting ${this.server}`);\n        switch (this.state) {\n            case TransportState.Connecting:\n                // If `state` is \"Connecting\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Disconnecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            case TransportState.Connected:\n                // If `state` is \"Connected\", `state` MUST transition to \"Disconnecting\" before returning.\n                if (this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must not be defined.\");\n                }\n                try {\n                    this.transitionState(TransportState.Disconnecting);\n                }\n                catch (e) {\n                    if (e instanceof StateTransitionError) {\n                        return Promise.reject(e); // Loop detected\n                    }\n                    throw e;\n                }\n                break;\n            case TransportState.Disconnecting:\n                // If `state` is \"Disconnecting\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Disconnecting));\n                }\n                if (!this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must be defined.\");\n                }\n                return this.disconnectPromise; // Already disconnecting\n            case TransportState.Disconnected:\n                // If `state` is \"Disconnected\", `state` MUST NOT transition before returning.\n                if (this.transitioningState) {\n                    return Promise.reject(this.transitionLoopDetectedError(TransportState.Disconnecting));\n                }\n                if (this.disconnectPromise) {\n                    throw new Error(\"Disconnect promise must not be defined.\");\n                }\n                return Promise.resolve(); // Already disconnected\n            default:\n                throw new Error(\"Unknown state\");\n        }\n        if (!this._ws) {\n            throw new Error(\"WebSocket must be defined.\");\n        }\n        const ws = this._ws;\n        this.disconnectPromise = new Promise((resolve, reject) => {\n            this.disconnectResolve = resolve;\n            this.disconnectReject = reject;\n            try {\n                // WebSocket.close()\n                // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/close\n                ws.close(1000); // careful here to use a local reference instead of this._ws\n            }\n            catch (error) {\n                // Treating this as a coding error as it apparently can only happen\n                // if you pass close() invalid parameters (so it should never happen)\n                this.logger.error(\"WebSocket close failed.\");\n                this.logger.error(error.toString());\n                throw error;\n            }\n        });\n        return this.disconnectPromise;\n    }\n    _send(message) {\n        if (this.configuration.traceSip === true) {\n            this.logger.log(\"Sending WebSocket message:\\n\\n\" + message + \"\\n\");\n        }\n        if (this._state !== TransportState.Connected) {\n            return Promise.reject(new Error(\"Not connected.\"));\n        }\n        if (!this._ws) {\n            throw new Error(\"WebSocket undefined.\");\n        }\n        try {\n            // WebSocket.send()\n            // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send\n            this._ws.send(message);\n        }\n        catch (error) {\n            if (error instanceof Error) {\n                return Promise.reject(error);\n            }\n            return Promise.reject(new Error(\"WebSocket send failed.\"));\n        }\n        return Promise.resolve();\n    }\n    /**\n     * WebSocket \"onclose\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketClose(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        const message = `WebSocket closed ${this.server} (code: ${ev.code})`;\n        const error = !this.disconnectPromise ? new Error(message) : undefined;\n        if (error) {\n            this.logger.warn(\"WebSocket closed unexpectedly\");\n        }\n        this.logger.log(message);\n        // We are about to transition to disconnected, so clear our web socket\n        this._ws = undefined;\n        // The `state` MUST transition to \"Disconnected\" before resolving (assuming `state` is not already \"Disconnected\").\n        this.transitionState(TransportState.Disconnected, error);\n    }\n    /**\n     * WebSocket \"onerror\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketError(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        this.logger.error(\"WebSocket error occurred.\");\n    }\n    /**\n     * WebSocket \"onmessage\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketMessage(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        const data = ev.data;\n        let finishedData;\n        // CRLF Keep Alive response from server. Clear our keep alive timeout.\n        if (/^(\\r\\n)+$/.test(data)) {\n            this.clearKeepAliveTimeout();\n            if (this.configuration.traceSip === true) {\n                this.logger.log(\"Received WebSocket message with CRLF Keep Alive response\");\n            }\n            return;\n        }\n        if (!data) {\n            this.logger.warn(\"Received empty message, discarding...\");\n            return;\n        }\n        if (typeof data !== \"string\") {\n            // WebSocket binary message.\n            try {\n                finishedData = new TextDecoder().decode(new Uint8Array(data));\n                // TextDecoder (above) is not supported by old browsers, but it correctly decodes UTF-8.\n                // The line below is an ISO 8859-1 (Latin 1) decoder, so just UTF-8 code points that are 1 byte.\n                // It's old code and works in old browsers (IE), so leaving it here in a comment in case someone needs it.\n                // finishedData = String.fromCharCode.apply(null, (new Uint8Array(data) as unknown as Array<number>));\n            }\n            catch (err) {\n                this.logger.error(err.toString());\n                this.logger.error(\"Received WebSocket binary message failed to be converted into string, message discarded\");\n                return;\n            }\n            if (this.configuration.traceSip === true) {\n                this.logger.log(\"Received WebSocket binary message:\\n\\n\" + finishedData + \"\\n\");\n            }\n        }\n        else {\n            // WebSocket text message.\n            finishedData = data;\n            if (this.configuration.traceSip === true) {\n                this.logger.log(\"Received WebSocket text message:\\n\\n\" + finishedData + \"\\n\");\n            }\n        }\n        if (this.state !== TransportState.Connected) {\n            this.logger.warn(\"Received message while not connected, discarding...\");\n            return;\n        }\n        if (this.onMessage) {\n            try {\n                this.onMessage(finishedData);\n            }\n            catch (e) {\n                this.logger.error(e.toString());\n                this.logger.error(\"Exception thrown by onMessage callback\");\n                throw e; // rethrow unhandled exception\n            }\n        }\n    }\n    /**\n     * WebSocket \"onopen\" event handler.\n     * @param ev - Event.\n     */\n    onWebSocketOpen(ev, ws) {\n        if (ws !== this._ws) {\n            return;\n        }\n        if (this._state === TransportState.Connecting) {\n            this.logger.log(`WebSocket opened ${this.server}`);\n            this.transitionState(TransportState.Connected);\n        }\n    }\n    /**\n     * Helper function to generate an Error.\n     * @param state - State transitioning to.\n     */\n    transitionLoopDetectedError(state) {\n        let message = `A state transition loop has been detected.`;\n        message += ` An attempt to transition from ${this._state} to ${state} before the prior transition completed.`;\n        message += ` Perhaps you are synchronously calling connect() or disconnect() from a callback or state change handler?`;\n        this.logger.error(message);\n        return new StateTransitionError(\"Loop detected.\");\n    }\n    /**\n     * Transition transport state.\n     * @internal\n     */\n    transitionState(newState, error) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        if (this.transitioningState) {\n            throw this.transitionLoopDetectedError(newState);\n        }\n        this.transitioningState = true;\n        // Validate state transition\n        switch (this._state) {\n            case TransportState.Connecting:\n                if (newState !== TransportState.Connected &&\n                    newState !== TransportState.Disconnecting &&\n                    newState !== TransportState.Disconnected) {\n                    invalidTransition();\n                }\n                break;\n            case TransportState.Connected:\n                if (newState !== TransportState.Disconnecting && newState !== TransportState.Disconnected) {\n                    invalidTransition();\n                }\n                break;\n            case TransportState.Disconnecting:\n                if (newState !== TransportState.Connecting && newState !== TransportState.Disconnected) {\n                    invalidTransition();\n                }\n                break;\n            case TransportState.Disconnected:\n                if (newState !== TransportState.Connecting) {\n                    invalidTransition();\n                }\n                break;\n            default:\n                throw new Error(\"Unknown state.\");\n        }\n        // Update state\n        const oldState = this._state;\n        this._state = newState;\n        // Local copies of connect promises (guarding against callbacks changing them indirectly)\n        // const connectPromise = this.connectPromise;\n        const connectResolve = this.connectResolve;\n        const connectReject = this.connectReject;\n        // Reset connect promises if no longer connecting\n        if (oldState === TransportState.Connecting) {\n            this.connectPromise = undefined;\n            this.connectResolve = undefined;\n            this.connectReject = undefined;\n        }\n        // Local copies of disconnect promises (guarding against callbacks changing them indirectly)\n        // const disconnectPromise = this.disconnectPromise;\n        const disconnectResolve = this.disconnectResolve;\n        const disconnectReject = this.disconnectReject;\n        // Reset disconnect promises if no longer disconnecting\n        if (oldState === TransportState.Disconnecting) {\n            this.disconnectPromise = undefined;\n            this.disconnectResolve = undefined;\n            this.disconnectReject = undefined;\n        }\n        // Clear any outstanding connect timeout\n        if (this.connectTimeout) {\n            clearTimeout(this.connectTimeout);\n            this.connectTimeout = undefined;\n        }\n        this.logger.log(`Transitioned from ${oldState} to ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        //  Transition to Connected\n        if (newState === TransportState.Connected) {\n            this.startSendingKeepAlives();\n            if (this.onConnect) {\n                try {\n                    this.onConnect();\n                }\n                catch (e) {\n                    this.logger.error(e.toString());\n                    this.logger.error(\"Exception thrown by onConnect callback\");\n                    throw e; // rethrow unhandled exception\n                }\n            }\n        }\n        //  Transition from Connected\n        if (oldState === TransportState.Connected) {\n            this.stopSendingKeepAlives();\n            if (this.onDisconnect) {\n                try {\n                    if (error) {\n                        this.onDisconnect(error);\n                    }\n                    else {\n                        this.onDisconnect();\n                    }\n                }\n                catch (e) {\n                    this.logger.error(e.toString());\n                    this.logger.error(\"Exception thrown by onDisconnect callback\");\n                    throw e; // rethrow unhandled exception\n                }\n            }\n        }\n        // Complete connect promise\n        if (oldState === TransportState.Connecting) {\n            if (!connectResolve) {\n                throw new Error(\"Connect resolve undefined.\");\n            }\n            if (!connectReject) {\n                throw new Error(\"Connect reject undefined.\");\n            }\n            newState === TransportState.Connected ? connectResolve() : connectReject(error || new Error(\"Connect aborted.\"));\n        }\n        // Complete disconnect promise\n        if (oldState === TransportState.Disconnecting) {\n            if (!disconnectResolve) {\n                throw new Error(\"Disconnect resolve undefined.\");\n            }\n            if (!disconnectReject) {\n                throw new Error(\"Disconnect reject undefined.\");\n            }\n            newState === TransportState.Disconnected\n                ? disconnectResolve()\n                : disconnectReject(error || new Error(\"Disconnect aborted.\"));\n        }\n        this.transitioningState = false;\n    }\n    // TODO: Review \"KeepAlive Stuff\".\n    // It is not clear if it works and there are no tests for it.\n    // It was blindly lifted the keep alive code unchanged from earlier transport code.\n    //\n    // From the RFC...\n    //\n    // SIP WebSocket Clients and Servers may keep their WebSocket\n    // connections open by sending periodic WebSocket \"Ping\" frames as\n    // described in [RFC6455], Section 5.5.2.\n    // ...\n    // The indication and use of the CRLF NAT keep-alive mechanism defined\n    // for SIP connection-oriented transports in [RFC5626], Section 3.5.1 or\n    // [RFC6223] are, of course, usable over the transport defined in this\n    // specification.\n    // https://tools.ietf.org/html/rfc7118#section-6\n    //\n    // and...\n    //\n    // The Ping frame contains an opcode of 0x9.\n    // https://tools.ietf.org/html/rfc6455#section-5.5.2\n    //\n    // ==============================\n    // KeepAlive Stuff\n    // ==============================\n    clearKeepAliveTimeout() {\n        if (this.keepAliveDebounceTimeout) {\n            clearTimeout(this.keepAliveDebounceTimeout);\n        }\n        this.keepAliveDebounceTimeout = undefined;\n    }\n    /**\n     * Send a keep-alive (a double-CRLF sequence).\n     */\n    sendKeepAlive() {\n        if (this.keepAliveDebounceTimeout) {\n            // We already have an outstanding keep alive, do not send another.\n            return Promise.resolve();\n        }\n        this.keepAliveDebounceTimeout = setTimeout(() => {\n            this.clearKeepAliveTimeout();\n        }, this.configuration.keepAliveDebounce * 1000);\n        return this.send(\"\\r\\n\\r\\n\");\n    }\n    /**\n     * Start sending keep-alives.\n     */\n    startSendingKeepAlives() {\n        // Compute an amount of time in seconds to wait before sending another keep-alive.\n        const computeKeepAliveTimeout = (upperBound) => {\n            const lowerBound = upperBound * 0.8;\n            return 1000 * (Math.random() * (upperBound - lowerBound) + lowerBound);\n        };\n        if (this.configuration.keepAliveInterval && !this.keepAliveInterval) {\n            this.keepAliveInterval = setInterval(() => {\n                this.sendKeepAlive();\n                this.startSendingKeepAlives();\n            }, computeKeepAliveTimeout(this.configuration.keepAliveInterval));\n        }\n    }\n    /**\n     * Stop sending keep-alives.\n     */\n    stopSendingKeepAlives() {\n        if (this.keepAliveInterval) {\n            clearInterval(this.keepAliveInterval);\n        }\n        if (this.keepAliveDebounceTimeout) {\n            clearTimeout(this.keepAliveDebounceTimeout);\n        }\n        this.keepAliveInterval = undefined;\n        this.keepAliveDebounceTimeout = undefined;\n    }\n}\nTransport.defaultOptions = {\n    server: \"\",\n    connectionTimeout: 5,\n    keepAliveInterval: 0,\n    keepAliveDebounce: 10,\n    traceSip: true\n};\n","import { Exception } from \"../../core/exceptions/exception.js\";\n/**\n * An exception indicating an invalid state transition error occured.\n * @public\n */\nexport class StateTransitionError extends Exception {\n    constructor(message) {\n        super(message ? message : \"An error occurred during state transition.\");\n    }\n}\n","/**\n * {@link Transport} state.\n *\n * @remarks\n * The {@link Transport} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                    ______________________________\n *                   |    ____________              |\n * Transport         v   v            |             |\n * Constructed -> Disconnected -> Connecting -> Connected -> Disconnecting\n *                     ^            ^    |_____________________^  |  |\n *                     |            |_____________________________|  |\n *                     |_____________________________________________|\n * ```\n * @public\n */\nexport var TransportState;\n(function (TransportState) {\n    /**\n     * The `connect()` method was called.\n     */\n    TransportState[\"Connecting\"] = \"Connecting\";\n    /**\n     * The `connect()` method resolved.\n     */\n    TransportState[\"Connected\"] = \"Connected\";\n    /**\n     * The `disconnect()` method was called.\n     */\n    TransportState[\"Disconnecting\"] = \"Disconnecting\";\n    /**\n     * The `connect()` method was rejected, or\n     * the `disconnect()` method completed, or\n     * network connectivity was lost.\n     */\n    TransportState[\"Disconnected\"] = \"Disconnected\";\n})(TransportState = TransportState || (TransportState = {}));\n","export const LIBRARY_VERSION = \"0.21.1\";\n","/**\n * {@link UserAgent} state.\n * @remarks\n * Valid state transitions:\n * ```\n * 1. \"Started\" --> \"Stopped\"\n * 2. \"Stopped\" --> \"Started\"\n * ```\n * @public\n */\nexport var UserAgentState;\n(function (UserAgentState) {\n    UserAgentState[\"Started\"] = \"Started\";\n    UserAgentState[\"Stopped\"] = \"Stopped\";\n})(UserAgentState = UserAgentState || (UserAgentState = {}));\n","/**\n * A simple SIP user implementation for web browsers.\n * @packageDocumentation\n */\nexport * from \"./simple-user.js\";\nexport * from \"./simple-user-delegate.js\";\nexport * from \"./simple-user-options.js\";\n","import { SessionManager } from \"../session-manager/session-manager.js\";\n/**\n * A simple SIP user class.\n * @remarks\n * While this class is completely functional for simple use cases, it is not intended\n * to provide an interface which is suitable for most (must less all) applications.\n * While this class has many limitations (for example, it only handles a single concurrent session),\n * it is, however, intended to serve as a simple example of using the SIP.js API.\n * @public\n */\nexport class SimpleUser {\n    /**\n     * Constructs a new instance of the `SimpleUser` class.\n     * @param server - SIP WebSocket Server URL.\n     * @param options - Options bucket. See {@link SimpleUserOptions} for details.\n     */\n    constructor(server, options = {}) {\n        this.session = undefined;\n        // Delegate\n        this.delegate = options.delegate;\n        // Copy options\n        this.options = Object.assign({}, options);\n        // Session manager options\n        const sessionManagerOptions = {\n            aor: this.options.aor,\n            delegate: {\n                onCallAnswered: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallAnswered) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onCallCreated: (session) => {\n                    var _a, _b;\n                    this.session = session;\n                    (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallCreated) === null || _b === void 0 ? void 0 : _b.call(_a);\n                },\n                onCallReceived: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallReceived) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onCallHangup: () => {\n                    var _a, _b;\n                    this.session = undefined;\n                    ((_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHangup) && ((_b = this.delegate) === null || _b === void 0 ? void 0 : _b.onCallHangup());\n                },\n                onCallHold: (s, held) => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallHold) === null || _b === void 0 ? void 0 : _b.call(_a, held); },\n                onCallDTMFReceived: (s, tone, dur) => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onCallDTMFReceived) === null || _b === void 0 ? void 0 : _b.call(_a, tone, dur); },\n                onMessageReceived: (message) => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onMessageReceived) === null || _b === void 0 ? void 0 : _b.call(_a, message.request.body); },\n                onRegistered: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onRegistered) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onUnregistered: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onUnregistered) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onServerConnect: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerConnect) === null || _b === void 0 ? void 0 : _b.call(_a); },\n                onServerDisconnect: () => { var _a, _b; return (_b = (_a = this.delegate) === null || _a === void 0 ? void 0 : _a.onServerDisconnect) === null || _b === void 0 ? void 0 : _b.call(_a); }\n            },\n            maxSimultaneousSessions: 1,\n            media: this.options.media,\n            reconnectionAttempts: this.options.reconnectionAttempts,\n            reconnectionDelay: this.options.reconnectionDelay,\n            registererOptions: this.options.registererOptions,\n            sendDTMFUsingSessionDescriptionHandler: this.options.sendDTMFUsingSessionDescriptionHandler,\n            userAgentOptions: this.options.userAgentOptions\n        };\n        this.sessionManager = new SessionManager(server, sessionManagerOptions);\n        // Use the SIP.js logger\n        this.logger = this.sessionManager.userAgent.getLogger(\"sip.SimpleUser\");\n    }\n    /**\n     * Instance identifier.\n     * @internal\n     */\n    get id() {\n        return (this.options.userAgentOptions && this.options.userAgentOptions.displayName) || \"Anonymous\";\n    }\n    /** The local media stream. Undefined if call not answered. */\n    get localMediaStream() {\n        return this.session && this.sessionManager.getLocalMediaStream(this.session);\n    }\n    /** The remote media stream. Undefined if call not answered. */\n    get remoteMediaStream() {\n        return this.session && this.sessionManager.getRemoteMediaStream(this.session);\n    }\n    /**\n     * The local audio track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    get localAudioTrack() {\n        return this.session && this.sessionManager.getLocalAudioTrack(this.session);\n    }\n    /**\n     * The local video track, if available.\n     * @deprecated Use localMediaStream and get track from the stream.\n     */\n    get localVideoTrack() {\n        return this.session && this.sessionManager.getLocalVideoTrack(this.session);\n    }\n    /**\n     * The remote audio track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    get remoteAudioTrack() {\n        return this.session && this.sessionManager.getRemoteAudioTrack(this.session);\n    }\n    /**\n     * The remote video track, if available.\n     * @deprecated Use remoteMediaStream and get track from the stream.\n     */\n    get remoteVideoTrack() {\n        return this.session && this.sessionManager.getRemoteVideoTrack(this.session);\n    }\n    /**\n     * Connect.\n     * @remarks\n     * Start the UserAgent's WebSocket Transport.\n     */\n    connect() {\n        this.logger.log(`[${this.id}] Connecting UserAgent...`);\n        return this.sessionManager.connect();\n    }\n    /**\n     * Disconnect.\n     * @remarks\n     * Stop the UserAgent's WebSocket Transport.\n     */\n    disconnect() {\n        this.logger.log(`[${this.id}] Disconnecting UserAgent...`);\n        return this.sessionManager.disconnect();\n    }\n    /**\n     * Return true if connected.\n     */\n    isConnected() {\n        return this.sessionManager.isConnected();\n    }\n    /**\n     * Start receiving incoming calls.\n     * @remarks\n     * Send a REGISTER request for the UserAgent's AOR.\n     * Resolves when the REGISTER request is sent, otherwise rejects.\n     */\n    register(registererRegisterOptions) {\n        this.logger.log(`[${this.id}] Registering UserAgent...`);\n        return this.sessionManager.register(registererRegisterOptions);\n    }\n    /**\n     * Stop receiving incoming calls.\n     * @remarks\n     * Send an un-REGISTER request for the UserAgent's AOR.\n     * Resolves when the un-REGISTER request is sent, otherwise rejects.\n     */\n    unregister(registererUnregisterOptions) {\n        this.logger.log(`[${this.id}] Unregistering UserAgent...`);\n        return this.sessionManager.unregister(registererUnregisterOptions);\n    }\n    /**\n     * Make an outgoing call.\n     * @remarks\n     * Send an INVITE request to create a new Session.\n     * Resolves when the INVITE request is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if Session is established.\n     * @param destination - The target destination to call. A SIP address to send the INVITE to.\n     * @param inviterOptions - Optional options for Inviter constructor.\n     * @param inviterInviteOptions - Optional options for Inviter.invite().\n     */\n    call(destination, inviterOptions, inviterInviteOptions) {\n        this.logger.log(`[${this.id}] Beginning Session...`);\n        if (this.session) {\n            return Promise.reject(new Error(\"Session already exists.\"));\n        }\n        return this.sessionManager.call(destination, inviterOptions, inviterInviteOptions).then(() => {\n            return;\n        });\n    }\n    /**\n     * Hangup a call.\n     * @remarks\n     * Send a BYE request, CANCEL request or reject response to end the current Session.\n     * Resolves when the request/response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    hangup() {\n        this.logger.log(`[${this.id}] Hangup...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.hangup(this.session).then(() => {\n            this.session = undefined;\n        });\n    }\n    /**\n     * Answer an incoming call.\n     * @remarks\n     * Accept an incoming INVITE request creating a new Session.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallAnswered` delegate method to determine if and when call is established.\n     * @param invitationAcceptOptions - Optional options for Inviter.accept().\n     */\n    answer(invitationAcceptOptions) {\n        this.logger.log(`[${this.id}] Accepting Invitation...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.answer(this.session, invitationAcceptOptions);\n    }\n    /**\n     * Decline an incoming call.\n     * @remarks\n     * Reject an incoming INVITE request.\n     * Resolves with the response is sent, otherwise rejects.\n     * Use `onCallHangup` delegate method to determine if and when call is ended.\n     */\n    decline() {\n        this.logger.log(`[${this.id}] rejecting Invitation...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.decline(this.session);\n    }\n    /**\n     * Hold call\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"hold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    hold() {\n        this.logger.log(`[${this.id}] holding session...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.hold(this.session);\n    }\n    /**\n     * Unhold call.\n     * @remarks\n     * Send a re-INVITE with new offer indicating \"unhold\".\n     * Resolves when the re-INVITE request is sent, otherwise rejects.\n     * Use `onCallHold` delegate method to determine if request is accepted or rejected.\n     * See: https://tools.ietf.org/html/rfc6337\n     */\n    unhold() {\n        this.logger.log(`[${this.id}] unholding session...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.unhold(this.session);\n    }\n    /**\n     * Hold state.\n     * @remarks\n     * True if session is on hold.\n     */\n    isHeld() {\n        return this.session ? this.sessionManager.isHeld(this.session) : false;\n    }\n    /**\n     * Mute call.\n     * @remarks\n     * Disable sender's media tracks.\n     */\n    mute() {\n        this.logger.log(`[${this.id}] disabling media tracks...`);\n        return this.session && this.sessionManager.mute(this.session);\n    }\n    /**\n     * Unmute call.\n     * @remarks\n     * Enable sender's media tracks.\n     */\n    unmute() {\n        this.logger.log(`[${this.id}] enabling media tracks...`);\n        return this.session && this.sessionManager.unmute(this.session);\n    }\n    /**\n     * Mute state.\n     * @remarks\n     * True if sender's media track is disabled.\n     */\n    isMuted() {\n        return this.session ? this.sessionManager.isMuted(this.session) : false;\n    }\n    /**\n     * Send DTMF.\n     * @remarks\n     * Send an INFO request with content type application/dtmf-relay.\n     * @param tone - Tone to send.\n     */\n    sendDTMF(tone) {\n        this.logger.log(`[${this.id}] sending DTMF...`);\n        if (!this.session) {\n            return Promise.reject(new Error(\"Session does not exist.\"));\n        }\n        return this.sessionManager.sendDTMF(this.session, tone);\n    }\n    /**\n     * Send a message.\n     * @remarks\n     * Send a MESSAGE request.\n     * @param destination - The target destination for the message. A SIP address to send the MESSAGE to.\n     */\n    message(destination, message) {\n        this.logger.log(`[${this.id}] sending message...`);\n        return this.sessionManager.message(destination, message);\n    }\n}\n","export {};\n","export {};\n","/**\n * A Transport implementation for web browsers.\n * @packageDocumentation\n */\nexport * from \"./transport.js\";\nexport * from \"./transport-options.js\";\n","export {};\n","import { EventEmitter } from 'events';\nimport type { UserAgentOptions, InviterOptions, SessionDescriptionHandlerModifier } from 'sip.js';\nimport { UserAgent, UserAgentState, Registerer, RegistererState, Inviter, Messager } from 'sip.js';\nimport type { IncomingResponse } from 'sip.js/lib/core';\nimport type { WebPhoneTransport } from './transport';\nimport { createWebPhoneTransport } from './transport';\n\nimport type { SipInfo, WebPhoneOptions } from './index';\nimport { AudioHelper } from './audioHelper';\nimport { Events } from './events';\nimport type { RCHeaders, WebPhoneInvitation, WebPhoneSession } from './session';\nimport { onSessionDescriptionHandlerCreated, patchIncomingWebphoneSession, patchWebphoneSession } from './session';\nimport { patchUserAgentCore } from './userAgentCore';\n\n/** RingCentral Active call info */\nexport interface ActiveCallInfo {\n  id: string;\n  from: string;\n  to: string;\n  direction: string;\n  sipData: {\n    toTag: string;\n    fromTag: string;\n  };\n}\n/**\n * WebPhoneUserAgent that makes SIP calls on behalf of the user\n */\nexport interface WebPhoneUserAgent extends UserAgent {\n  /** Utility class to help play incoming and outgoing cues for calls */\n  audioHelper: AudioHelper;\n  /** RTC constraints to be passed to browser when requesting for media stream */\n  constraints?: object;\n  /**\n   * @internal\n   * Contains list of default headers needed to be sent to RingCentral SIP server\n   */\n  defaultHeaders: string[];\n  /**\n   * If `true`, the first answer to the local offer is immediately utilized for media.\n   * Requires that the INVITE request MUST NOT fork.\n   * Has no effect if `inviteWithoutSdp` is true.\n   */\n  earlyMedia?: boolean;\n  /** If `true`, logs media stats when an connection is established */\n  enableMediaReportLogging?: boolean;\n  /** If `true`, Qality of service of the call is generated and published to RingCentral server once the call ends */\n  enableQos?: boolean;\n  /** instanceId used while registering to the backend SIP server */\n  instanceId: string;\n  /** HTML media elements where local and remote audio and video streams should be sent */\n  media?: { local?: HTMLMediaElement; remote?: HTMLMediaElement };\n  /** SDP modifiers to be used when generating local offer or creating answer */\n  modifiers?: SessionDescriptionHandlerModifier[];\n  /** Time interval in ms on how often should the quality of service data be collected */\n  qosCollectInterval?: number;\n  /** regId used while registering to the backend SIP server */\n  regId?: number;\n  /**\n   * @internal\n   * Instance of Registerer which will be used to register the device\n   */\n  registerer?: Registerer;\n  /** sip info received by RingCentral backend server when provisioning a device */\n  sipInfo?: SipInfo;\n  /** Transport class over which communication would take place */\n  transport: WebPhoneTransport;\n  /** To add event listeners to be triggered whenever an event on UserAgent is emitted */\n  addListener?: typeof EventEmitter.prototype.addListener;\n  /**\n   * @internal\n   * Helper function to create RingCentral message\n   */\n  createRcMessage?: (options: RCHeaders) => string;\n  /** Emit event along with data which will trigger all listerenes attached to that event */\n  emit: typeof EventEmitter.prototype.emit;\n  /** Send call invitation */\n  invite: (number: string, options: InviteOptions) => WebPhoneSession;\n  /** Remove event listener from list of listeners for that event */\n  off: typeof EventEmitter.prototype.off;\n  /** To add event listeners to be triggered whenever an event on UserAgent is emitted */\n  on: typeof EventEmitter.prototype.on;\n  /** Add once event listener from list of listeners for that event */\n  once: typeof EventEmitter.prototype.once;\n  /**\n   * @internal\n   * Function which will be called when session is created. It's value is picked using options.onSession when instantiating userAgent object\n   */\n  onSession?: (session: WebPhoneSession) => void;\n  /** Register device with the registrar */\n  register?: () => Promise<void>;\n  /** Remove event listener from list of listeners for that event */\n  removeListener?: typeof EventEmitter.prototype.removeListener;\n  /** Remove all event listener from list of listeners for that event */\n  removeAllListeners?: typeof EventEmitter.prototype.removeAllListeners;\n  /**\n   * @internal\n   * Utility function used to send message to backend server\n   */\n  sendMessage?: (to: string, messageData: string) => Promise<IncomingResponse>;\n  /** To switch from another device to this device */\n  switchFrom: (activeCall: ActiveCallInfo, options: InviteOptions) => WebPhoneSession;\n  /** Unregister device from the registrar */\n  unregister: () => Promise<void>;\n}\n\nexport interface InviteOptions {\n  fromNumber?: string;\n  homeCountryId?: string;\n  extraHeaders?: string[];\n  RTCConstraints?: any;\n}\n\n/** @ignore */\n// eslint-disable-next-line max-params\nexport function createWebPhoneUserAgent(\n  configuration: UserAgentOptions,\n  sipInfo: SipInfo,\n  options: WebPhoneOptions,\n  id: string,\n): WebPhoneUserAgent {\n  const extraConfiguration: UserAgentOptions = {\n    delegate: {\n      onConnect: (): Promise<void> => userAgent.register!(),\n      onInvite: (invitation: WebPhoneInvitation): void => {\n        userAgent.audioHelper!.playIncoming(true);\n        invitation.delegate = {};\n        invitation.delegate.onSessionDescriptionHandler = () => onSessionDescriptionHandlerCreated(invitation);\n        patchWebphoneSession(invitation);\n        patchIncomingWebphoneSession(invitation);\n        (invitation as any).logger.log('UA received incoming call invite');\n        invitation.sendReceiveConfirm!();\n        userAgent.emit!(Events.UserAgent.Invite, invitation);\n      },\n      onNotify: (notification): void => {\n        const event = notification.request.getHeader('Event');\n        if (event === '') {\n          userAgent.emit!(Events.UserAgent.ProvisionUpdate);\n        }\n        (userAgent as any).logger.log('UA received notify');\n        notification.accept();\n      },\n    },\n  };\n  const extendedConfiguration = {\n    ...extraConfiguration,\n    ...configuration,\n  };\n  const userAgent: WebPhoneUserAgent = new UserAgent(extendedConfiguration) as WebPhoneUserAgent;\n  const eventEmitter = new EventEmitter();\n  userAgent.on = eventEmitter.on.bind(eventEmitter);\n  userAgent.off = eventEmitter.off.bind(eventEmitter);\n  userAgent.once = eventEmitter.once.bind(eventEmitter);\n  userAgent.addListener = eventEmitter.addListener.bind(eventEmitter);\n  userAgent.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  userAgent.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n  userAgent.defaultHeaders = [`P-rc-endpoint-id: ${id}`, `Client-id: ${options.clientId}`];\n  userAgent.regId = options.regId;\n  userAgent.media = {};\n  userAgent.enableQos = options.enableQos;\n  userAgent.enableMediaReportLogging = options.enableMediaReportLogging;\n  userAgent.qosCollectInterval = options.qosCollectInterval;\n  if (options.media?.remote && options.media.local) {\n    userAgent.media.remote = options.media.remote;\n    userAgent.media.local = options.media.local;\n  } else {\n    userAgent.media = undefined;\n  }\n  userAgent.registerer = new Registerer(userAgent, {\n    regId: userAgent.regId,\n    instanceId: userAgent.instanceId,\n    extraHeaders: userAgent.defaultHeaders,\n  });\n  userAgent.sipInfo = sipInfo;\n  userAgent.modifiers = options.modifiers;\n  userAgent.constraints = options.mediaConstraints;\n  userAgent.earlyMedia = options.earlyMedia;\n  userAgent.audioHelper = new AudioHelper(options.audioHelper);\n  userAgent.onSession = options.onSession;\n  (userAgent as any)._transport = createWebPhoneTransport(userAgent.transport, options);\n  (userAgent as any).onTransportDisconnect = onTransportDisconnect.bind(userAgent);\n  userAgent.emit = eventEmitter.emit.bind(eventEmitter);\n  userAgent.register = register.bind(userAgent);\n  userAgent.unregister = unregister.bind(userAgent);\n  userAgent.invite = invite.bind(userAgent);\n  userAgent.sendMessage = sendMessage.bind(userAgent);\n  userAgent.createRcMessage = createRcMessage.bind(userAgent);\n  userAgent.switchFrom = switchFrom.bind(userAgent);\n  patchUserAgentCore(userAgent);\n  userAgent.start();\n  userAgent.stateChange.addListener((newState) => {\n    switch (newState) {\n      case UserAgentState.Started: {\n        userAgent.emit!(Events.UserAgent.Started);\n        break;\n      }\n      case UserAgentState.Stopped: {\n        userAgent.emit!(Events.UserAgent.Stopped);\n        break;\n      }\n    }\n  });\n  userAgent.registerer.stateChange.addListener((newState) => {\n    switch (newState) {\n      case RegistererState.Registered: {\n        userAgent.emit!(Events.UserAgent.Registered);\n        break;\n      }\n      case RegistererState.Unregistered: {\n        userAgent.emit!(Events.UserAgent.Unregistered);\n        break;\n      }\n    }\n  });\n\n  return userAgent;\n}\n\nfunction onTransportDisconnect(this: WebPhoneUserAgent, error?: Error): void {\n  // Patch it so that reconnection is managed by WebPhoneTransport\n  if (this.state === UserAgentState.Stopped) {\n    return;\n  }\n  if (this.delegate?.onDisconnect) {\n    this.delegate.onDisconnect(error);\n  }\n  if (error) {\n    this.transport.reconnect!();\n  }\n}\n\nfunction createRcMessage(this: WebPhoneUserAgent, options: RCHeaders): string {\n  options.body = options.body || '';\n  return (\n    '<Msg>' +\n    '<Hdr SID=\"' +\n    options.sid +\n    '\" Req=\"' +\n    options.request +\n    '\" From=\"' +\n    options.from +\n    '\" To=\"' +\n    options.to +\n    '\" Cmd=\"' +\n    options.reqid +\n    '\"/> ' +\n    '<Bdy Cln=\"' +\n    this.sipInfo!.authorizationId +\n    '\" ' +\n    options.body +\n    '/>' +\n    '</Msg>'\n  );\n}\n\nfunction sendMessage(this: WebPhoneUserAgent, _to: string, messageData: string): Promise<IncomingResponse> {\n  const extraHeaders = [`P-rc-ws: ${this.contact}`];\n  // For some reason, UserAgent.makeURI is unable to parse username starting with #\n  // Fix in later release if this is fixed by SIP.js\n  let to = _to;\n  const [user] = to.split('@');\n  to = to.startsWith('#') ? `sip:${to.substring(1)}` : `sip:${to}`;\n  const uri = UserAgent.makeURI(to)!;\n  uri.user = user;\n  const messager = new Messager(this, uri, messageData, 'x-rc/agent', {\n    extraHeaders,\n  });\n\n  return new Promise((resolve, reject) => {\n    messager.message({\n      requestDelegate: {\n        onAccept: resolve,\n        onReject: reject,\n      },\n    });\n  });\n}\n\nasync function register(this: WebPhoneUserAgent): Promise<void> {\n  await this.registerer!.register({\n    requestDelegate: {\n      onReject: (response): void => {\n        if (!response) {\n          return;\n        }\n        if (this.transport.isSipErrorCode!(response.message.statusCode)) {\n          this.transport.onSipErrorCode!();\n        }\n        this.emit!(Events.UserAgent.RegistrationFailed, response);\n        (this as any).logger.warn('UA Registration Failed');\n      },\n    },\n  });\n}\n\nasync function unregister(this: WebPhoneUserAgent): Promise<void> {\n  await this.registerer!.unregister();\n}\n\nfunction invite(this: WebPhoneUserAgent, number: string, options: InviteOptions = {}): WebPhoneSession {\n  const inviterOptions: InviterOptions = {};\n  inviterOptions.extraHeaders = [\n    ...(options.extraHeaders || []),\n    ...this.defaultHeaders,\n    `P-Asserted-Identity: sip:${(options.fromNumber || this.sipInfo!.username) + '@' + this.sipInfo!.domain}`,\n    ...(options.homeCountryId ? [`P-rc-country-id: ${options.homeCountryId}`] : []),\n  ];\n\n  options.RTCConstraints = options.RTCConstraints || {\n    ...this.constraints,\n    optional: [{ DtlsSrtpKeyAgreement: 'true' }],\n  };\n  inviterOptions.sessionDescriptionHandlerModifiers = this.modifiers;\n  inviterOptions.sessionDescriptionHandlerOptions = {\n    constraints: options.RTCConstraints,\n  };\n  inviterOptions.earlyMedia = this.earlyMedia;\n  inviterOptions.delegate = {\n    onSessionDescriptionHandler: (): void => onSessionDescriptionHandlerCreated(inviter),\n    onNotify: (notification) => notification.accept(),\n  };\n  this.audioHelper!.playOutgoing(true);\n  (this as any).logger.log(`Invite to ${number} created with playOutgoing set to true`);\n  const inviter: WebPhoneSession = new Inviter(\n    this,\n    UserAgent.makeURI(`sip:${number}@${this.sipInfo!.domain}`)!,\n    inviterOptions,\n  ) as WebPhoneSession;\n  inviter\n    .invite({\n      requestDelegate: {\n        onAccept: (inviteResponse) => {\n          inviter.startTime = new Date();\n          inviter.emit!(Events.Session.Accepted, inviteResponse.message);\n        },\n        onProgress: (inviteResponse) => {\n          inviter.emit!(Events.Session.Progress, inviteResponse.message);\n        },\n      },\n    })\n    .then(() => this.emit!(Events.UserAgent.InviteSent, inviter))\n    .catch((e) => {\n      if (e.message.indexOf('Permission denied') > -1) {\n        inviter.emit!(Events.Session.UserMediaFailed);\n      }\n      throw e;\n    });\n  patchWebphoneSession(inviter);\n  return inviter;\n}\n\n/**\n * Support to switch call from other device to current web phone device\n * need active call information from details presence API for switching\n * https://developers.ringcentral.com/api-reference/Detailed-Extension-Presence-with-SIP-Event\n */\n\nfunction switchFrom(this: WebPhoneUserAgent, activeCall: ActiveCallInfo, options: InviteOptions = {}): WebPhoneSession {\n  const replaceHeaders = [\n    `Replaces: ${activeCall.id};to-tag=${activeCall.sipData.fromTag};from-tag=${activeCall.sipData.toTag}`,\n    'RC-call-type: replace',\n  ];\n  const [toNumber, fromNumber] =\n    activeCall.direction === 'Outbound' ? [activeCall.to, activeCall.from] : [activeCall.from, activeCall.to];\n  options.extraHeaders = (options.extraHeaders || []).concat(replaceHeaders);\n  options.fromNumber = options.fromNumber || fromNumber;\n  const inviterOptions: InviterOptions = {\n    extraHeaders: options.extraHeaders,\n    sessionDescriptionHandlerOptions: {\n      constraints: options.RTCConstraints || this.constraints,\n    },\n  };\n  return this.invite!(toNumber, inviterOptions);\n}\n","import { EventEmitter } from 'events';\nimport type { Exception, Logger } from 'sip.js/lib/core';\nimport type { Transport } from 'sip.js/lib/api/transport';\nimport type { Transport as WebTransport } from 'sip.js/lib/platform/web/transport';\nimport type { TransportOptions } from 'sip.js/lib/platform/web/transport/transport-options';\nimport { TransportState } from 'sip.js';\n\nimport type { TransportServer, WebPhoneOptions } from './index';\nimport { Events } from './events';\n\nexport interface WebPhoneTransport extends Transport {\n  /** @ignore */\n  configuration?: TransportOptions;\n  /** logger class to log transport related messaged */\n  logger?: Logger;\n  /**\n   * Address of the RingCentral main proxy\n   * Is calculated automatically as the first item in the `options.transportServers` array\n   */\n  mainProxy?: TransportServer;\n  /** Max attempts until which transport reconnection will be attempted before moving to the next available `transportServer` */\n  maxReconnectionAttempts?: number;\n  /** Interval after which the next reconnection attempt will be made */\n  nextReconnectInterval?: number;\n  /** The current reconnection attempt */\n  reconnectionAttempts?: number;\n  /** Timeout to be used to calculate when should the next reconnection attempt be made */\n  reconnectionTimeout?: number;\n  /** @ignore */\n  reconnectTimer?: any;\n  /** Current server where transport is connected */\n  server?: string;\n  /** Possible list of servers where transport can connect to */\n  servers?: TransportServer[];\n  /** List of SIP error codes */\n  sipErrorCodes?: string[];\n  /** Interval after which switch back to main proxy should be initiated */\n  switchBackInterval?: number;\n  /** @ignore */\n  switchBackToMainProxyTimer?: any;\n  /** @ignore */\n  __afterWSConnected?: typeof __afterWSConnected;\n  /** @ignore */\n  __clearSwitchBackToMainProxyTimer?: typeof __clearSwitchBackToMainProxyTimer;\n  /** @ignore */\n  __computeRandomTimeout?: typeof __computeRandomTimeout;\n  /** @ignore */\n  __connect?: typeof __connect;\n  /** @ignore */\n  __isCurrentMainProxy?: typeof __isCurrentMainProxy;\n  /** @ignore */\n  __onConnectedToBackup?: typeof __onConnectedToBackup;\n  /** @ignore */\n  __onConnectedToMain?: typeof __onConnectedToMain;\n  /** @ignore */\n  __resetServersErrorStatus?: typeof __resetServersErrorStatus;\n  /** @ignore */\n  __scheduleSwitchBackToMainProxy?: typeof __scheduleSwitchBackToMainProxy;\n  /** @ignore */\n  __setServerIsError?: typeof __setServerIsError;\n  /** Register functions to be called when events are fired on the transport object */\n  addListener?: typeof EventEmitter.prototype.addListener;\n  /** Trigger events on transport object */\n  emit?: typeof EventEmitter.prototype.emit;\n  /** Get next available server from the list of `transportServers` */\n  getNextWsServer?: (force?: boolean) => TransportServer | undefined;\n  /** Is the current code part of the SIP error codes registered with the transport object */\n  isSipErrorCode?: typeof isSipErrorCode;\n  /** Helper function to check if any valid `transportServers` are available to connect to */\n  noAvailableServers?: () => boolean;\n  /**\n   * Unregister functions to be called when events are fired on the transport object\n   *\n   * alias for removeListener\n   */\n  off: typeof EventEmitter.prototype.off;\n  /** Register functions to be called when events are fired on the transport object\n   *\n   * alias for addListener\n   */\n  on: typeof EventEmitter.prototype.on;\n  /** Register functions to be called once when events are fired on the transport object */\n  once: typeof EventEmitter.prototype.once;\n  /** @ignore */\n  onSipErrorCode?: typeof onSipErrorCode;\n  /** Function to try reconnecting to the transport. Is automatically triggered when transport connection is dropped or `sipErrorCode` is returned from backend server */\n  reconnect: typeof WebTransport.prototype.connect;\n  /**\n   * Unregister functions to be called when events are fired on the transport object\n   */\n  removeListener?: typeof EventEmitter.prototype.removeListener;\n  /**\n   * Unregister all functions to be called when events are fired on the transport object\n   */\n  removeAllListeners?: typeof EventEmitter.prototype.removeAllListeners;\n}\n\nexport function createWebPhoneTransport(transport: WebPhoneTransport, options: WebPhoneOptions): WebPhoneTransport {\n  transport.reconnectionAttempts = 0;\n  transport.sipErrorCodes = options.sipErrorCodes;\n  transport.servers = options.transportServers;\n  const eventEmitter = new EventEmitter();\n  transport.on = eventEmitter.on.bind(eventEmitter);\n  transport.off = eventEmitter.off.bind(eventEmitter);\n  transport.once = eventEmitter.once.bind(eventEmitter);\n  transport.addListener = eventEmitter.addListener.bind(eventEmitter);\n  transport.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  transport.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n  transport.emit = eventEmitter.emit.bind(eventEmitter);\n  transport.mainProxy = options.transportServers![0];\n  transport.switchBackInterval = options.switchBackInterval;\n  transport.reconnectionTimeout = options.reconnectionTimeout;\n  transport.maxReconnectionAttempts = options.maxReconnectionAttempts;\n  transport.__afterWSConnected = __afterWSConnected.bind(transport);\n  transport.__clearSwitchBackToMainProxyTimer = __clearSwitchBackToMainProxyTimer.bind(transport);\n  transport.__computeRandomTimeout = __computeRandomTimeout.bind(transport);\n  transport.__connect = transport.connect;\n  transport.__isCurrentMainProxy = __isCurrentMainProxy.bind(transport);\n  transport.__onConnectedToBackup = __onConnectedToBackup.bind(transport);\n  transport.__onConnectedToMain = __onConnectedToMain.bind(transport);\n  transport.__resetServersErrorStatus = __resetServersErrorStatus.bind(transport);\n  transport.__scheduleSwitchBackToMainProxy = __scheduleSwitchBackToMainProxy.bind(transport);\n  transport.__setServerIsError = __setServerIsError.bind(transport);\n  transport.connect = __connect.bind(transport);\n  transport.getNextWsServer = getNextWsServer.bind(transport);\n  transport.isSipErrorCode = isSipErrorCode.bind(transport);\n  transport.noAvailableServers = noAvailableServers.bind(transport);\n  transport.onSipErrorCode = onSipErrorCode.bind(transport);\n  transport.reconnect = reconnect.bind(transport);\n  transport.stateChange.addListener((newState) => {\n    switch (newState) {\n      case TransportState.Connecting: {\n        transport.emit!(Events.Transport.Connecting);\n        break;\n      }\n      case TransportState.Connected: {\n        transport.emit!(Events.Transport.Connected);\n        transport.__afterWSConnected!();\n        break;\n      }\n      case TransportState.Disconnecting: {\n        transport.emit!(Events.Transport.Disconnecting);\n        break;\n      }\n      case TransportState.Disconnected: {\n        transport.emit!(Events.Transport.Disconnected);\n        break;\n      }\n    }\n  });\n  return transport;\n}\n\nfunction __connect(this: WebPhoneTransport): Promise<void> {\n  return this.__connect!().catch(async (e: Exception) => {\n    this.logger!.error(`unable to establish connection to server ${this.server} - ${e.message}`);\n    this.emit!(Events.Transport.ConnectionAttemptFailure, e); // Can we move to onTransportDisconnect?\n    await this.reconnect!();\n  });\n}\n\nfunction __computeRandomTimeout(reconnectionAttempts = 1, randomMinInterval = 0, randomMaxInterval = 0): number {\n  if (randomMinInterval < 0 || randomMaxInterval < 0 || reconnectionAttempts < 1) {\n    throw new Error('Arguments must be positive numbers');\n  }\n\n  const randomInterval =\n    Math.floor(Math.random() * Math.abs(randomMaxInterval - randomMinInterval)) + randomMinInterval;\n  const retryOffset = ((reconnectionAttempts - 1) * (randomMinInterval + randomMaxInterval)) / 2;\n\n  return randomInterval + retryOffset;\n}\n\nfunction __setServerIsError(this: WebPhoneTransport, uri: string): void {\n  this.servers!.forEach((server) => {\n    if (server.uri === uri && !server.isError) {\n      server.isError = true;\n    }\n  });\n}\n\nfunction __resetServersErrorStatus(this: WebPhoneTransport): void {\n  this.servers!.forEach((server) => {\n    server.isError = false;\n  });\n}\n\nfunction __isCurrentMainProxy(this: WebPhoneTransport): boolean {\n  return this.server === this.servers![0].uri;\n}\n\nfunction __afterWSConnected(this: WebPhoneTransport): void {\n  this.__isCurrentMainProxy!() ? this.__onConnectedToMain!() : this.__onConnectedToBackup!();\n}\n\nfunction __onConnectedToMain(this: WebPhoneTransport): void {\n  this.__clearSwitchBackToMainProxyTimer!();\n}\n\nfunction __onConnectedToBackup(this: WebPhoneTransport): void {\n  if (!this.switchBackToMainProxyTimer) {\n    this.__scheduleSwitchBackToMainProxy!();\n  }\n}\n\nfunction __scheduleSwitchBackToMainProxy(this: WebPhoneTransport): void {\n  const randomInterval = 15 * 60 * 1000; // 15 min\n\n  let switchBackInterval = this.switchBackInterval ? this.switchBackInterval * 1000 : null;\n\n  // Add random time to expand clients connections in time;\n  if (switchBackInterval) {\n    switchBackInterval += this.__computeRandomTimeout!(1, 0, randomInterval);\n    this.logger!.warn('Try to switch back to main proxy after ' + Math.round(switchBackInterval / 1000 / 60) + ' min');\n\n    this.switchBackToMainProxyTimer = setTimeout(() => {\n      this.switchBackToMainProxyTimer = null;\n      this.logger!.warn('switchBack initiated');\n      this.emit!(Events.Transport.SwitchBackToMainProxy);\n      // FIXME: Why is force reconnect not called here and the client is made to do that?\n    }, switchBackInterval);\n  } else {\n    this.logger!.warn('switchBackInterval is not set. Will be switched with next provision update ');\n  }\n}\n\nfunction __clearSwitchBackToMainProxyTimer(this: WebPhoneTransport): void {\n  if (this.switchBackToMainProxyTimer) {\n    clearTimeout(this.switchBackToMainProxyTimer);\n    this.switchBackToMainProxyTimer = null;\n  }\n}\n\nasync function reconnect(this: WebPhoneTransport, forceReconnectToMain?: boolean): Promise<void> {\n  if (this.reconnectionAttempts! > 0) {\n    this.logger!.warn(`Reconnection attempt ${this.reconnectionAttempts} failed`);\n  }\n\n  if (this.reconnectTimer) {\n    this.logger!.warn('already trying to reconnect');\n    return;\n  }\n\n  if (forceReconnectToMain) {\n    this.logger!.warn('forcing connect to main WS server');\n    await this.disconnect();\n    this.server = this.getNextWsServer!(true)!.uri;\n    this.reconnectionAttempts = 0;\n    await this.connect();\n    return;\n  }\n\n  if (this.isConnected()) {\n    this.logger!.warn('attempted to reconnect while connected - forcing disconnect');\n    await this.disconnect();\n    await this.reconnect!();\n    return;\n  }\n\n  if (this.noAvailableServers!()) {\n    this.logger!.warn('no available WebSocket servers left');\n    this.emit!(Events.Transport.Closed);\n    this.__resetServersErrorStatus!();\n    this.server = this.getNextWsServer!(true)!.uri;\n    this.__clearSwitchBackToMainProxyTimer!();\n    return;\n  }\n\n  this.reconnectionAttempts! += 1;\n\n  if (this.reconnectionAttempts! > this.maxReconnectionAttempts!) {\n    this.logger!.warn(`maximum reconnection attempts for WebSocket ${this.server}`);\n    this.logger!.warn(`transport ${this.server} failed`);\n    this.__setServerIsError!(this.server!);\n    this.emit!(Events.Transport.ConnectionFailure);\n    const nextServer = this.getNextWsServer!();\n    if (!nextServer) {\n      // No more servers available to try connecting to\n      this.logger!.error('unable to connect to any transport');\n      return;\n    }\n    this.configuration!.server = nextServer.uri;\n    this.reconnectionAttempts = 0;\n    await this.connect();\n  } else {\n    const randomMinInterval = (this.reconnectionTimeout! - 2) * 1000;\n    const randomMaxInterval = (this.reconnectionTimeout! + 2) * 1000;\n    this.nextReconnectInterval = this.__computeRandomTimeout!(\n      this.reconnectionAttempts,\n      randomMinInterval,\n      randomMaxInterval,\n    );\n    this.logger!.warn(\n      `trying to reconnect to WebSocket ${this.server} (reconnection attempt: ${this.reconnectionAttempts})`,\n    );\n    this.reconnectTimer = setTimeout(() => {\n      this.reconnectTimer = undefined;\n      this.connect().then(() => {\n        this.reconnectionAttempts = 0;\n      });\n    }, this.nextReconnectInterval);\n    this.logger!.warn(`next reconnection attempt in: ${Math.round(this.nextReconnectInterval / 1000)} seconds.`);\n  }\n}\n\nfunction getNextWsServer(this: WebPhoneTransport, force = false): TransportServer | undefined {\n  // Adding the force check because otherwise it will not bypass error check\n  if (!force && this.noAvailableServers!()) {\n    this.logger!.warn('attempted to get next ws server but there are no available ws servers left');\n    return;\n  }\n  const candidates = force ? this.servers : this.servers!.filter(({ isError }) => !isError);\n  return candidates![0];\n}\n\nfunction noAvailableServers(this: WebPhoneTransport): boolean {\n  return this.servers!.every(({ isError }) => isError);\n}\n\nfunction isSipErrorCode(this: WebPhoneTransport, statusCode: number | undefined): boolean {\n  if (!statusCode) {\n    return false;\n  }\n  if (!this.sipErrorCodes) {\n    return false;\n  }\n  return this.sipErrorCodes.indexOf(statusCode.toString()) !== -1;\n}\n\nasync function onSipErrorCode(this: WebPhoneTransport): Promise<void> {\n  this.logger!.warn('Error received from the server. Disconnecting from the proxy');\n  this.__setServerIsError!(this.server!);\n  this.emit!(Events.Transport.ConnectionFailure);\n  this.reconnectionAttempts = 0;\n  return this.reconnect!();\n}\n","export interface WebPhoneEvents {\n  /**  All WebPhone events related to Transport */\n  Transport: {\n    /** Fired when Transport is connecting. */\n    Connecting: string;\n    /** Fired when Transport is connected. */\n    Connected: string;\n    /** Fired when Transport is disconnecting. */\n    Disconnecting: string;\n    /** Fired when Transport is disconnected. */\n    Disconnected: string;\n    /** Fired every time a transport connection attempt fails. */\n    ConnectionAttemptFailure: string;\n    /** Fired when maxReconnectionAttempts have exhausted trying to connect to one server or sip error is returned from the server. */\n    ConnectionFailure: string;\n    /** Fired when client should initiate connection back to main proxy. */\n    SwitchBackToMainProxy: string;\n    /** Fired when maxReconnectionAttempts have exhausted trying to connect to one server or sip error is returned from the server. */\n    Closed: string;\n  };\n  /**  All WebPhone events related to UserAgent */\n  UserAgent: {\n    /** Fired when UserAgent is registered with the registerer. */\n    Registered: string;\n    /** Fired when UserAgent is unregistered from the registerer. */\n    Unregistered: string;\n    /** Fired when UserAgent register failed. */\n    RegistrationFailed: string;\n    /** Fired when Invite is sent. */\n    InviteSent: string;\n    /** Fired when Invitation is received. */\n    Invite: string;\n    /** Fired when provisionUpdate notification is received. */\n    ProvisionUpdate: string;\n    /** Fired when UserAgent is started. */\n    Started: string;\n    /** Fired when UserAgent is stopped. */\n    Stopped: string;\n  };\n  /** All WebPhone events related to Session */\n  Session: {\n    /** Fired when Session is accepted. */\n    Accepted: string;\n    /** Fired when Session is progress. */\n    Progress: string;\n    /** Fired when session is muted. */\n    Muted: string;\n    /** Fired when session is unmuted. */\n    Unmuted: string;\n    /** Fired when session is established */\n    Establishing: string;\n    /** Fired when session is established */\n    Established: string;\n    /** Fired when session is terminating */\n    Terminating: string;\n    /** Fired when session is terminated */\n    Terminated: string;\n    /** Fired when UPDATE request is received over socket */\n    UpdateReceived: string;\n    /** Fired when INFO request is received over socket with move to rcv instruction */\n    MoveToRcv: string;\n    /** Fired when QOS is published to the backend server */\n    QOSPublished: string;\n    /** Fired when RTP Stat Report is generated */\n    RTPStat: string;\n    /** Fired when get user media failed */\n    UserMediaFailed: string;\n  };\n}\n\n/** @ignore */\nexport const Events: WebPhoneEvents = {\n  Transport: {\n    Connecting: 'connecting',\n    Connected: 'connected',\n    Disconnecting: 'disconnecting',\n    Disconnected: 'disconnected',\n    ConnectionAttemptFailure: 'wsConnectionError',\n    ConnectionFailure: 'transportError',\n    SwitchBackToMainProxy: 'switchBackProxy',\n    Closed: 'closed',\n  },\n  UserAgent: {\n    Registered: 'registered',\n    Unregistered: 'unregistered',\n    RegistrationFailed: 'registrationFailed',\n    InviteSent: 'inviteSent',\n    Invite: 'invite',\n    ProvisionUpdate: 'provisionUpdate',\n    Started: 'started',\n    Stopped: 'stopped',\n  },\n  Session: {\n    Accepted: 'accepted',\n    Progress: 'progress',\n    Muted: 'muted',\n    Unmuted: 'unmuted',\n    Establishing: 'establishing',\n    Established: 'established',\n    Terminating: 'terminating',\n    Terminated: 'terminated',\n    UpdateReceived: 'updateReceived',\n    MoveToRcv: 'moveToRcv',\n    QOSPublished: 'qos-published',\n    RTPStat: 'rtpStat',\n    UserMediaFailed: 'userMediaFailed',\n  },\n};\n","export interface DomAudio extends HTMLAudioElement {\n  playPromise?: Promise<void>;\n}\n\nexport interface AudioHelperOptions {\n  /** Enable audio feedback for incoming and outgoing calls */\n  enabled?: boolean;\n  /** Path to audio file for incoming call */\n  incoming?: string;\n  /** Path to audio file for outgoing call */\n  outgoing?: string;\n}\n\nexport class AudioHelper {\n  /** Current volume */\n  public volume?: number;\n\n  private readonly _enabled: boolean;\n  private _incoming?: string;\n  private _outgoing?: string;\n  private _audio?: { [key: string]: DomAudio };\n\n  public constructor(options: AudioHelperOptions = {}) {\n    this._enabled = !!options.enabled;\n    this.loadAudio(options);\n  }\n\n  /** Load incoming and outgoing audio files for feedback */\n  public loadAudio(options: AudioHelperOptions): void {\n    this._incoming = options.incoming;\n    this._outgoing = options.outgoing;\n    this._audio = {};\n  }\n\n  /** Set volume for incoming and outgoing feedback */\n  public setVolume(_volume: number): void {\n    let volume = _volume;\n    if (volume < 0) {\n      volume = 0;\n    }\n    if (volume > 1) {\n      volume = 1;\n    }\n    this.volume = volume;\n    for (const url in this._audio) {\n      if (Object.hasOwn(this._audio, url)) {\n        this._audio[url].volume = volume;\n      }\n    }\n  }\n\n  /**\n   * Play or pause incoming feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */\n  public playIncoming(value: boolean): AudioHelper {\n    return this._playSound(this._incoming!, value, this.volume ?? 0.5);\n  }\n\n  /**\n   * Play or pause outgoing feedback\n   * @param value `true` to play audio and `false` to pause\n   * @returns\n   */\n  public playOutgoing(value: boolean): AudioHelper {\n    return this._playSound(this._outgoing!, value, this.volume ?? 1);\n  }\n\n  private _playSound(url: string, val: boolean, volume: number): AudioHelper {\n    if (!this._enabled || !url || !this._audio) {\n      return this;\n    }\n\n    if (!this._audio[url]) {\n      if (val) {\n        this._audio[url] = new Audio();\n        this._audio[url].src = url;\n        this._audio[url].loop = true;\n        this._audio[url].volume = volume;\n        this._audio[url].playPromise = this._audio[url].play();\n      }\n    } else {\n      if (val) {\n        this._audio[url].currentTime = 0;\n        this._audio[url].playPromise = this._audio[url].play();\n      } else {\n        const audio = this._audio[url];\n        if (audio.playPromise !== undefined) {\n          audio.playPromise.then(() => {\n            audio.pause();\n          });\n        }\n      }\n    }\n    return this;\n  }\n}\n","import { EventEmitter } from 'events';\nimport type {\n  Invitation,\n  InvitationAcceptOptions,\n  Inviter,\n  SessionInviteOptions,\n  SessionReferOptions,\n  URI,\n  Session,\n} from 'sip.js';\nimport { RequestPendingError, UserAgent } from 'sip.js';\nimport type {\n  IncomingRequestMessage,\n  IncomingResponse,\n  OutgoingInviteRequest,\n  OutgoingReferRequest,\n  OutgoingRequestDelegate,\n  RequestOptions,\n} from 'sip.js/lib/core';\nimport { fromBodyLegacy } from 'sip.js/lib/core';\nimport { SessionState } from 'sip.js/lib/api/session-state';\nimport type {\n  SessionDescriptionHandler,\n  SessionDescriptionHandlerOptions,\n} from 'sip.js/lib/platform/web/session-description-handler';\n\nimport { extend } from './utils';\nimport type { Command } from './constants';\nimport { responseTimeout, messages } from './constants';\nimport { MediaStreams } from './mediaStreams';\nimport type { RTPReport } from './rtpReport';\nimport { isNoAudio } from './rtpReport';\nimport type { WebPhoneUserAgent } from './userAgent';\nimport { Events } from './events';\nimport type { WehPhoneUserAgentCore } from './userAgentCore';\nimport { startQosStatsCollection } from './qos';\n\nexport interface QosStats {\n  cpuRC?: string;\n  cpuOS?: string;\n  ram?: string;\n  netType?: string;\n}\n\n/**\n * Object representing all the headers used by RingCentral backend\n */\nexport interface RCHeaders {\n  body?: string;\n  reqid?: number;\n  sid?: string;\n  request?: string;\n  from?: string;\n  to?: string;\n  srvLvl?: string;\n  srvLvlExt?: string;\n  nm?: string;\n  toNm?: string;\n  callAttributes?: string;\n  srcIVRSiteName?: string;\n  queueName?: string;\n  queueExtPin?: string;\n  inDID?: string;\n  inDIDLabel?: string;\n  callerId?: string;\n  callerIdName?: string;\n  displayInfo?: string;\n  displayInfoSub?: string;\n}\n\nexport interface ReplyOptions {\n  replyType: number; // FIXME: Use enum\n  replyText: string;\n  timeValue?: string;\n  timeUnits?: string;\n  callbackDirection?: string;\n}\n\nexport interface RTCPeerConnectionLegacy extends RTCPeerConnection {\n  getRemoteStreams: () => MediaStream[];\n  getLocalStreams: () => MediaStream[];\n}\n\nexport class CommonSession {\n  /** @ignore */\n  public __isRecording?: boolean;\n  /** @ignore */\n  public __localHold?: boolean;\n  /** @ignore */\n  public __patched?: boolean;\n  /** @ignore */\n  public __userAgentCoreEventsSetup?: boolean;\n  /** Flag to check if the call is on hold or not */\n  public held?: boolean;\n  /** Options to represent dom elements where media stream should be loaded */\n  public media?: { local?: HTMLMediaElement; remote?: HTMLMediaElement };\n  /** Flag to indicate if media stats are being collected */\n  public mediaStatsStarted?: boolean;\n  /** MediaStreams class instance which has the logic to collect media stream stats */\n  public mediaStreams?: MediaStreams;\n  /** Flag to check if the call is muted or not */\n  public muted?: boolean;\n  /** Counter to represent how many media stats report were missed because of no audio */\n  public noAudioReportCount?: number;\n  /** JOSN representation of RC headers received for an incoming call */\n  public rcHeaders?: RCHeaders;\n  public __qosStats?: QosStats;\n  /** Flag to represent if reinvite request was sent because there was no audio reported */\n  public reinviteForNoAudioSent?: boolean;\n  /** Time when session was started */\n  public startTime?: Date | undefined;\n  /** @ignore */\n  public __accept?: typeof Invitation.prototype.accept;\n  /** @ignore */\n  public __dispose?: typeof Session.prototype.dispose;\n  /** Method to attach event listener for session specific events */\n  public addListener?: typeof EventEmitter.prototype.addListener;\n  /** Add track to media source */\n  public addTrack?: typeof addTrack;\n  /** RingCentral barge implementation */\n  public barge?: typeof barge;\n  /** RingCentral blind transfer implementation */\n  public blindTransfer?: typeof blindTransfer;\n  /**\n   * @internal\n   * Helper function which represents if call control features can be used or not\n   */\n  public canUseRCMCallControl?: typeof canUseRCMCallControl;\n  /**\n   * @internal\n   * Create session message which would be sent to the RingCentral backend\n   */\n  public createSessionMessage?: typeof createSessionMessage;\n  /** Sends a DTMF over the call */\n  public dtmf?: typeof dtmf;\n  /** Emit session specific events which will trigger all the event listeners attached */\n  public emit?: typeof EventEmitter.prototype.emit;\n  /** RingCentral flip implementation */\n  public flip?: typeof flip;\n  /** RingCentral flip implementation */\n  public forward?: typeof forward;\n  /** Put the call on hold */\n  public hold?: typeof hold;\n  /** Ignore incoming call */\n  public ignore?: typeof ignore;\n  /** Mute the call */\n  public mute?: typeof mute;\n  /** Remove event listener */\n  public off: typeof EventEmitter.prototype.off;\n  /** Add event listener. Same as addListener */\n  public on: typeof EventEmitter.prototype.on;\n  /** Add once event listener. Same as addListener */\n  public once: typeof EventEmitter.prototype.once;\n  /** Returns if the call is on hold locally or not */\n  public onLocalHold?: typeof onLocalHold;\n  /** RingCentral park implementation */\n  public park?: typeof park;\n  /** Send a session reinvite */\n  public reinvite?: typeof reinvite;\n  /** Remove event listener */\n  public removeListener?: typeof EventEmitter.prototype.removeListener;\n  /** Remove all event listeners */\n  public removeAllListeners?: typeof EventEmitter.prototype.removeAllListeners;\n  /** RingCentral reply with message implementation */\n  public replyWithMessage?: typeof replyWithMessage;\n  /**\n   * @internal\n   * Helper method that sends an INFO request to other user agent and then waits for an INFO request from the other user agent\n   */\n  public sendInfoAndReceiveResponse?: typeof sendInfoAndReceiveResponse;\n  /**\n   * @internal\n   * Helper function to send INFO request with `move` instruction to RingCentral backend\n   */\n  public sendMoveResponse?: typeof sendMoveResponse;\n  /** Send `receiveConfirm` command to backend */\n  public sendReceiveConfirm?: typeof sendReceiveConfirm;\n  /** Helper function to send session message to backend using UserAgent */\n  public sendSessionMessage?: typeof sendSessionMessage;\n  /** Start recording the call */\n  public startRecord?: typeof startRecord;\n  /** Function to stop collecting media stats */\n  public stopMediaStats?: typeof stopMediaStats;\n  /** Stop recording the call */\n  public stopRecord?: typeof stopRecord;\n  /** Send incoming call to voicemail */\n  public toVoicemail?: typeof toVoicemail;\n  /** Transfer current call */\n  public transfer?: typeof transfer;\n  /** Put the call on unhold */\n  public unhold?: typeof unhold;\n  /** Unmute the call */\n  public unmute?: typeof unmute;\n  /** RingCentral warm transfer implementation */\n  public warmTransfer?: typeof warmTransfer;\n  /** RingCentral whisper implementation */\n  public whisper?: typeof whisper;\n  public setQosStats?: typeof setQosStats;\n}\n\nexport type WebPhoneSession = WebPhoneInvitation | WebPhoneInviter;\n\n/** This is an extension of the Invitation class of SIP.js\n *\n * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.invitation.md)\n */\nexport interface WebPhoneInvitation extends Invitation, CommonSession {\n  /**\n   * Accept the invitation.\n   *\n   * @remarks\n   * Accept the incoming INVITE request to start a Session.\n   * Replies to the INVITE request with a 200 Ok response.\n   * Resolves once the response sent, otherwise rejects.\n   *\n   * This method may reject for a variety of reasons including\n   * the receipt of a CANCEL request before `accept` is able\n   * to construct a response.\n   * @param options - Options bucket.\n   */\n  accept: typeof Invitation.prototype.accept;\n  /**\n   * User Agent instance\n   */\n  userAgent: WebPhoneUserAgent;\n}\n\n/** This is an extension of the Inviter class of SIP.js\n *\n * [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.inviter.md)\n */\nexport interface WebPhoneInviter extends Inviter, CommonSession {\n  /**\n   * User Agent instance\n   */\n  userAgent: WebPhoneUserAgent;\n}\n\nconst mediaCheckTimer = 2000;\n\nexport function patchWebphoneSession(session: WebPhoneSession): WebPhoneSession {\n  if (session.__patched) {\n    return session;\n  }\n  session.__patched = true;\n  session.held = false;\n  session.muted = false;\n  session.media = session.userAgent.media;\n  session.__dispose = session.dispose.bind(session);\n  session.dispose = dispose.bind(session);\n  const eventEmitter = new EventEmitter();\n  session.on = eventEmitter.on.bind(eventEmitter);\n  session.off = eventEmitter.off.bind(eventEmitter);\n  session.once = eventEmitter.once.bind(eventEmitter);\n  session.addListener = eventEmitter.addListener.bind(eventEmitter);\n  session.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  session.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);\n  session.emit = eventEmitter.emit.bind(eventEmitter);\n  session.sendInfoAndReceiveResponse = sendInfoAndReceiveResponse.bind(session);\n  session.startRecord = startRecord.bind(session);\n  session.stopRecord = stopRecord.bind(session);\n  session.sendMoveResponse = sendMoveResponse.bind(session);\n  session.park = park.bind(session);\n  session.flip = flip.bind(session);\n  session.whisper = whisper.bind(session);\n  session.barge = barge.bind(session);\n  session.mute = mute.bind(session);\n  session.unmute = unmute.bind(session);\n  session.addTrack = addTrack.bind(session);\n  session.stopMediaStats = stopMediaStats.bind(session);\n  session.warmTransfer = warmTransfer.bind(session);\n  session.blindTransfer = blindTransfer.bind(session);\n  session.transfer = transfer.bind(session);\n  session.hold = hold.bind(session);\n  session.unhold = unhold.bind(session);\n  session.dtmf = dtmf.bind(session);\n  session.reinvite = reinvite.bind(session);\n  session.forward = forward.bind(session); // FIXME: Not needed?\n  session.__qosStats = {};\n  session.setQosStats = setQosStats.bind(session);\n  setupUserAgentCoreEvent(session);\n  session.stateChange.addListener((newState) => {\n    switch (newState) {\n      case SessionState.Establishing: {\n        session.emit!(Events.Session.Establishing);\n        break;\n      }\n      case SessionState.Established: {\n        stopPlaying(session);\n        session.addTrack!();\n        session.emit!(Events.Session.Established);\n        break;\n      }\n      case SessionState.Terminating: {\n        stopPlaying(session);\n        stopMediaStreamStats(session);\n        session.emit!(Events.Session.Terminating);\n        break;\n      }\n      case SessionState.Terminated: {\n        stopPlaying(session);\n        session.emit!(Events.Session.Terminated);\n        break;\n      }\n    }\n  });\n\n  // FIXME: Do we need this? The replaced session is part of existing sessions and would have already been patched\n  // NEEDED - inviter.ts L191\n  // session.on(\"replaced\", patchWebphoneSession);\n\n  if (session.userAgent.onSession) {\n    session.userAgent.onSession(session);\n  }\n  session.mediaStatsStarted = false;\n  session.noAudioReportCount = 0;\n  session.reinviteForNoAudioSent = false;\n\n  return session;\n}\n\nexport function patchIncomingWebphoneSession(session: WebPhoneSession): void {\n  try {\n    parseRcHeader(session);\n  } catch (e) {\n    (session as any).logger.error(\"Can't parse RC headers from invite request due to \" + e);\n  }\n  session.canUseRCMCallControl = canUseRCMCallControl.bind(session);\n  session.createSessionMessage = createSessionMessage.bind(session);\n  session.ignore = ignore.bind(session);\n  session.replyWithMessage = replyWithMessage.bind(session);\n  session.sendReceiveConfirm = sendReceiveConfirm.bind(session);\n  session.sendSessionMessage = sendSessionMessage.bind(session);\n  session.toVoicemail = toVoicemail.bind(session);\n  session.__accept = (session as Invitation).accept.bind(session);\n  (session as WebPhoneInvitation).accept = accept.bind(session);\n  setupUserAgentCoreEvent(session);\n}\n\nfunction canUseRCMCallControl(this: WebPhoneSession): boolean {\n  return !!this.rcHeaders;\n}\n\nfunction createSessionMessage(this: WebPhoneSession, options: RCHeaders): string {\n  if (!this.rcHeaders) {\n    throw Error('createSessionMessage options is undefined');\n  }\n  extend(options, {\n    sid: this.rcHeaders.sid,\n    request: this.rcHeaders.request,\n    from: this.rcHeaders.to,\n    to: this.rcHeaders.from,\n  });\n  return this.userAgent.createRcMessage!(options);\n}\n\nasync function sendReceiveConfirm(this: WebPhoneSession): Promise<IncomingResponse> {\n  return this.sendSessionMessage!(messages.receiveConfirm as unknown as RCHeaders)\n    .then((response) => {\n      (this as any).logger.log('sendReceiveConfirm success');\n      return response;\n    })\n    .catch((error) =>\n      (this as any).logger.error(`failed to send receive confirmation via SIP MESSAGE due to ${error.message}`),\n    );\n}\n\nfunction sendSessionMessage(this: WebPhoneSession, options: RCHeaders): Promise<IncomingResponse> {\n  if (!this.rcHeaders) {\n    (this as any).logger.error(\"Can't send SIP MESSAGE related to session: no RC headers available\");\n  }\n  return this.userAgent.sendMessage!(this.rcHeaders!.from!, this.createSessionMessage!(options));\n}\n\nasync function sendInfoAndReceiveResponse(this: WebPhoneSession, command: Command, _options?: any): Promise<any> {\n  const options = _options || {};\n  extend(command, options);\n  delete command.extraHeaders;\n  return new Promise((resolve, reject) => {\n    const requestDelegate: OutgoingRequestDelegate = {\n      onAccept: (response: IncomingResponse): void => {\n        let timeout: ReturnType<typeof setTimeout> | undefined;\n        const {\n          message: { statusCode, callId },\n        } = response;\n        if (statusCode === 200) {\n          const onInfo = (message: IncomingRequestMessage): void => {\n            // FIXME: I think we need this check here\n            if (message.callId !== callId) {\n              return;\n            }\n            const body = message?.body || '{}';\n            let obj;\n\n            try {\n              obj = JSON.parse(body);\n            } catch (e) {\n              obj = {};\n            }\n            if (obj.response && obj.response.command === command.command && obj.response.result) {\n              timeout && clearTimeout(timeout);\n              this.off!('RC_SIP_INFO', onInfo);\n              if (obj.response.result.code.toString() === '0') {\n                return resolve(obj.response.result);\n              }\n              return reject(obj.response.result);\n            }\n          };\n          timeout = setTimeout(() => {\n            reject(new Error('Timeout: no reply'));\n            this.off!('RC_SIP_INFO', onInfo);\n          }, responseTimeout);\n          this.on!('RC_SIP_INFO', onInfo);\n        } else {\n          reject(new Error(`The INFO response status code is: ${statusCode} (waiting for 200)`));\n        }\n      },\n      onReject: (response) => {\n        reject(new Error(`The INFO response status code is: ${response.message.statusCode} (waiting for 200)`));\n      },\n    };\n    const requestOptions: RequestOptions = {\n      extraHeaders: [...(options.extraHeaders || []), ...this.userAgent.defaultHeaders],\n      body: fromBodyLegacy({\n        body: JSON.stringify({ request: command }),\n        contentType: 'application/json;charset=utf-8',\n      }),\n    };\n    this.info({ requestDelegate, requestOptions });\n  });\n}\n\nasync function startRecord(this: WebPhoneSession): Promise<any> {\n  return setRecord(this, true);\n}\n\nasync function stopRecord(this: WebPhoneSession): Promise<any> {\n  return setRecord(this, false);\n}\n\n// eslint-disable-next-line max-params\nfunction sendMoveResponse(\n  this: WebPhoneSession,\n  reqId: number,\n  code: number,\n  description: string,\n  options: { extraHeaders?: Array<string> } = {},\n): void {\n  const extraHeaders = options.extraHeaders || [];\n  const requestOptions: RequestOptions = {\n    extraHeaders: [...extraHeaders, ...this.userAgent.defaultHeaders],\n    body: fromBodyLegacy({\n      body: JSON.stringify({\n        response: {\n          reqId,\n          command: 'move',\n          result: {\n            code,\n            description,\n          },\n        },\n      }),\n      contentType: 'application/json;charset=utf-8',\n    }),\n  };\n  this.info({ requestOptions });\n}\n\nfunction ignore(this: WebPhoneSession): Promise<IncomingResponse> {\n  return this.sendReceiveConfirm!().then(() => this.sendSessionMessage!(messages.ignore));\n}\n\nfunction toVoicemail(this: WebPhoneSession): Promise<IncomingResponse> {\n  return this.sendReceiveConfirm!().then(() => this.sendSessionMessage!(messages.toVoicemail));\n}\n\nfunction replyWithMessage(this: WebPhoneSession, replyOptions: ReplyOptions): Promise<IncomingResponse> {\n  let body = 'RepTp=\"' + replyOptions.replyType + '\"';\n\n  if (replyOptions.replyType === 0) {\n    body += ' Bdy=\"' + replyOptions.replyText + '\"';\n  } else if (replyOptions.replyType === 1 || replyOptions.replyType === 4) {\n    body += ' Vl=\"' + replyOptions.timeValue + '\"';\n    body += ' Units=\"' + replyOptions.timeUnits + '\"';\n    body += ' Dir=\"' + replyOptions.callbackDirection + '\"';\n  }\n  return this.sendReceiveConfirm!().then(() =>\n    this.sendSessionMessage!({ reqid: messages.replyWithMessage.reqid, body }),\n  );\n}\n\nasync function flip(this: WebPhoneSession, target: string): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.flip, { target });\n}\n\nasync function whisper(this: WebPhoneSession): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.whisper);\n}\n\nasync function barge(this: WebPhoneSession): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.barge);\n}\n\nfunction park(this: WebPhoneSession): Promise<any> {\n  return this.sendInfoAndReceiveResponse!(messages.park);\n}\n\nfunction mute(this: WebPhoneSession, silent?: boolean): void {\n  if (this.state !== SessionState.Established) {\n    (this as any).logger.warn('An active session is required to mute audio');\n    return;\n  }\n  if (this.muted) {\n    (this as any).logger.debug('Session already muted');\n    return;\n  }\n  (this as any).logger.log('Muting Audio');\n  enableSenderTracks(this, false);\n  this.muted = true;\n  if (!silent) {\n    this.emit!(Events.Session.Muted, this);\n  }\n}\n\nfunction unmute(this: WebPhoneSession, silent?: boolean): void {\n  if (this.state !== SessionState.Established) {\n    (this as any).logger.warn('An active session is required to unmute audio');\n    return;\n  }\n  if (!this.muted) {\n    (this as any).logger.debug('Session not muted');\n    return;\n  }\n  (this as any).logger.log('Unmuting Audio');\n  enableSenderTracks(this, true);\n  this.muted = false;\n  if (!silent) {\n    this.emit!(Events.Session.Unmuted, this);\n  }\n}\n\nfunction addTrack(this: WebPhoneSession, remoteAudioEle?: HTMLVideoElement, localAudioEle?: HTMLVideoElement): void {\n  const sessionDescriptionHandler = this.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  let remoteAudio: HTMLMediaElement;\n  let localAudio: HTMLMediaElement;\n\n  if (remoteAudioEle && localAudioEle) {\n    remoteAudio = remoteAudioEle;\n    localAudio = localAudioEle;\n  } else if (this.media) {\n    remoteAudio = this.media.remote!;\n    localAudio = this.media.local!;\n  } else {\n    throw new Error('HTML Media Element not Defined');\n  }\n\n  // TODO: peerConnecton.remoteMediaStream already has reciver track added thanks to default session description handler. Can we remove this code?\n  let remoteStream = new MediaStream();\n  if (peerConnection?.getReceivers) {\n    peerConnection.getReceivers().forEach((receiver) => {\n      const rtrack = receiver.track;\n      if (rtrack) {\n        remoteStream.addTrack(rtrack);\n        (this as any).logger.log('Remote track added');\n      }\n    });\n  } else {\n    remoteStream = sessionDescriptionHandler.remoteMediaStream;\n    (this as any).logger.log('Remote track added');\n  }\n  remoteAudio.srcObject = remoteStream;\n  remoteAudio.play().catch(() => {\n    (this as any).logger.error('Remote play was rejected');\n  });\n\n  // TODO: peerConnecton.localMediaStream already has sender track added thanks to default session description handler. Can we remove this code?\n  let localStream = new MediaStream();\n  if (peerConnection?.getSenders) {\n    peerConnection.getSenders().forEach((sender) => {\n      const strack = sender.track;\n      if (strack && strack.kind === 'audio') {\n        localStream.addTrack(strack);\n        (this as any).logger.log('Local track added');\n      }\n    });\n  } else {\n    localStream = sessionDescriptionHandler.localMediaStream;\n    (this as any).logger.log('Local track added');\n  }\n  localAudio.srcObject = localStream;\n  localAudio.play().catch(() => {\n    (this as any).logger.error('Local play was rejected');\n  });\n\n  if (localStream && remoteStream && !this.mediaStatsStarted) {\n    this.mediaStreams = new MediaStreams(this);\n    (this as any).logger.log('Start gathering media report');\n    this.mediaStatsStarted = true;\n    this.mediaStreams.getMediaStats((report: RTPReport) => {\n      if (this.userAgent.enableMediaReportLogging) {\n        (this as any).logger.log(`Got media report: ${JSON.stringify(report)}`);\n      }\n      if (!this.reinviteForNoAudioSent && isNoAudio(report)) {\n        (this as any).logger.log('No audio report');\n        this.noAudioReportCount!++;\n        if (this.noAudioReportCount === 3) {\n          (this as any).logger.log('No audio for 6 sec. Trying to recover audio by sending Re-invite');\n          this.mediaStreams!.reconnectMedia();\n          this.reinviteForNoAudioSent = true;\n          this.noAudioReportCount = 0;\n        }\n      } else if (!isNoAudio(report)) {\n        this.noAudioReportCount = 0;\n      }\n    }, mediaCheckTimer);\n  }\n}\n\nfunction stopMediaStats(this: WebPhoneSession): void {\n  (this as any).logger.log('Stopping media stats collection');\n  if (!this) {\n    return;\n  }\n  this.mediaStreams?.stopMediaStats();\n  this.mediaStatsStarted = false;\n  this.noAudioReportCount = 0;\n}\n\nasync function blindTransfer(\n  this: WebPhoneSession,\n  target: string | URI | WebPhoneSession,\n  options: SessionReferOptions = {},\n): Promise<OutgoingReferRequest> {\n  (this as any).logger.log('Call transfer initiated');\n  const newTarget =\n    typeof target === 'string' ? UserAgent.makeURI(`sip:${target}@${this.userAgent.sipInfo!.domain}`)! : target;\n  return this.refer(newTarget, options);\n}\n\nasync function warmTransfer(\n  this: WebPhoneSession,\n  target: string | URI | WebPhoneSession,\n  options: SessionReferOptions = { requestOptions: { extraHeaders: [] } },\n): Promise<OutgoingReferRequest> {\n  options.requestOptions!.extraHeaders = (options.requestOptions!.extraHeaders || []).concat(\n    this.userAgent.defaultHeaders,\n  );\n  const newTarget =\n    typeof target === 'string' ? UserAgent.makeURI(`sip:${target}@${this.userAgent.sipInfo!.domain}`)! : target;\n  (this as any).logger.log('Completing warm transfer');\n  return this.refer(newTarget, options);\n}\n\nasync function transfer(\n  this: WebPhoneSession,\n  target: string | URI | WebPhoneSession,\n  options: SessionReferOptions = {},\n): Promise<OutgoingReferRequest> {\n  if (!options.requestOptions) {\n    options.requestOptions = {};\n  }\n  if (!options.requestOptions.extraHeaders) {\n    options.requestOptions.extraHeaders = [];\n  }\n  options.requestOptions.extraHeaders = [...options.requestOptions.extraHeaders, ...this.userAgent.defaultHeaders];\n  return this.blindTransfer!(target, options);\n}\n\n/**\n *\n * @param this WebPhoneSessionSessionInviteOptions\n * @param options\n * @returns Promise<OutgoingInviteRequest>\n *\n * Sends a reinvite. Also makes sure to regenerate a new SDP by passing offerToReceiveAudio: true, offerToReceiveVideo: false  and iceRestart: true\n * Once the SDP is ready, the local description is set and the SDP is sent to the remote peer along with an INVITE request\n */\nfunction reinvite(this: WebPhoneSession, options: SessionInviteOptions = {}): Promise<OutgoingInviteRequest> {\n  options.sessionDescriptionHandlerOptions = {\n    ...options.sessionDescriptionHandlerOptions,\n    offerToReceiveAudio: true,\n    offerToReceiveVideo: false,\n    iceRestart: true,\n  } as any;\n  options.requestDelegate = options.requestDelegate || {};\n  const originalOnAccept = options.requestDelegate.onAccept?.bind(options.requestDelegate);\n  options.requestDelegate.onAccept = (...args): void => {\n    patchIncomingWebphoneSession(this);\n    originalOnAccept?.(...args);\n  };\n  return this.invite(options);\n}\n\nasync function hold(this: WebPhoneSession): Promise<void> {\n  this.stopMediaStats!();\n  try {\n    (this as any).logger.log('Hold Initiated');\n    await setHold(this, true);\n    (this as any).logger.log('Hold completed, held is set to true');\n  } catch (e) {\n    throw new Error('Hold could not be completed');\n  }\n}\n\nasync function unhold(this: WebPhoneSession): Promise<void> {\n  try {\n    (this as any).logger.log('Unhold Initiated');\n    await setHold(this, false);\n    (this as any).logger.log('Unhold completed, held is set to false');\n  } catch (e) {\n    throw new Error('Unhold could not be completed');\n  }\n  this.addTrack(this.media.remote as HTMLVideoElement, this.media.local as HTMLVideoElement);\n}\n\n// eslint-disable-next-line max-params\nfunction dtmf(this: WebPhoneSession, dtmf: string, _duration = 100, _interToneGap = 50): void {\n  const duration = parseInt(_duration.toString(), 10);\n  const interToneGap = parseInt(_interToneGap.toString(), 10);\n  const sessionDescriptionHandler = this.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  if (!peerConnection) {\n    (this as any).logger.error('Peer connection closed.');\n    return;\n  }\n  const senders = peerConnection.getSenders();\n  const audioSender = senders.find((sender) => sender.track && sender.track.kind === 'audio');\n  const dtmfSender: RTCDTMFSender | null = audioSender!.dtmf;\n  if (dtmfSender !== undefined && dtmfSender) {\n    (this as any).logger.log(`Send DTMF: ${dtmf} Duration: ${duration} InterToneGap: ${interToneGap}`);\n    return dtmfSender.insertDTMF(dtmf, duration, interToneGap);\n  }\n  throw new Error('Send DTMF failed');\n}\n\nasync function accept(this: WebPhoneSession, _options: InvitationAcceptOptions = {}): Promise<void> {\n  const options = _options || {};\n  options.extraHeaders = (options.extraHeaders || []).concat(this.userAgent.defaultHeaders);\n  options.sessionDescriptionHandlerOptions = {\n    ...options.sessionDescriptionHandlerOptions,\n  };\n  options.sessionDescriptionHandlerOptions.constraints = options.sessionDescriptionHandlerOptions.constraints || {\n    ...this.userAgent.constraints,\n    optional: [{ DtlsSrtpKeyAgreement: 'true' }],\n  };\n  try {\n    await this.__accept!(options);\n    this.startTime = new Date();\n    this.emit!(Events.Session.Accepted, this.request);\n  } catch (e) {\n    if ((e as any).message.indexOf('Permission denied') !== -1) {\n      this.emit!(Events.Session.UserMediaFailed);\n    }\n  }\n}\n\n// eslint-disable-next-line max-params\nasync function forward(\n  this: WebPhoneSession,\n  target: WebPhoneSession,\n  acceptOptions: InvitationAcceptOptions = {},\n  transferOptions: SessionReferOptions = {},\n): Promise<OutgoingReferRequest> {\n  await (this as WebPhoneInvitation).accept(acceptOptions);\n  return new Promise((resolve) => {\n    this.mute!();\n    setTimeout(() => {\n      resolve(this.transfer!(target, transferOptions));\n    }, 700);\n  });\n}\n\nasync function dispose(this: WebPhoneSession) {\n  stopMediaStreamStats(this);\n  this.__dispose!();\n}\n\n/* ---------------------------------------------------------- HELPER FUNCTIONS ---------------------------------------------------------- */\n\nfunction parseRcHeaderString(str = ''): { [key: string]: string } {\n  const pairs = str.split(/; */).filter((pair) => pair.includes('=')); // skip things that don't look like key=value\n  const result: { [key: string]: string } = {};\n  for (const pair of pairs) {\n    let [key, value] = pair.split('=');\n    key = key.trim();\n    value = value.trim();\n    if (!(key in result)) {\n      result[key] = value;\n    }\n  }\n  return result;\n}\n\nfunction parseRcHeader(session: WebPhoneSession): void {\n  const prc = session.request.getHeader('P-Rc');\n  const prcCallInfo = session.request.getHeader('P-Rc-Api-Call-Info');\n  if (prc) {\n    const parser = new DOMParser();\n    const xmlDoc = parser.parseFromString(prc, 'text/xml');\n    const hdrNode = xmlDoc.getElementsByTagName('Hdr')[0];\n    const bdyNode = xmlDoc.getElementsByTagName('Bdy')[0];\n\n    if (hdrNode) {\n      session.rcHeaders = {\n        sid: hdrNode.getAttribute('SID') || undefined,\n        request: hdrNode.getAttribute('Req') || undefined,\n        from: hdrNode.getAttribute('From') || undefined,\n        to: hdrNode.getAttribute('To') || undefined,\n      };\n    }\n    if (bdyNode) {\n      extend(session.rcHeaders, {\n        srvLvl: bdyNode.getAttribute('SrvLvl'),\n        srvLvlExt: bdyNode.getAttribute('SrvLvlExt'),\n        nm: bdyNode.getAttribute('Nm'),\n        toNm: bdyNode.getAttribute('ToNm'),\n      });\n    }\n  }\n  if (prcCallInfo) {\n    const parsed = parseRcHeaderString(prcCallInfo);\n    extend(session.rcHeaders, parsed);\n  }\n}\n\nasync function setRecord(session: WebPhoneSession, flag: boolean): Promise<any> {\n  const message = flag ? messages.startRecord : messages.stopRecord;\n\n  if ((session.__isRecording && !flag) || (!session.__isRecording && flag)) {\n    const data = await session.sendInfoAndReceiveResponse!(message);\n    session.__isRecording = !!flag;\n    return data;\n  }\n}\n\nfunction enableReceiverTracks(session: WebPhoneSession, enable: boolean): void {\n  const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  if (!peerConnection) {\n    (session as any).logger.error('Peer connection closed.');\n    return;\n  }\n\n  peerConnection.getReceivers().forEach((receiver) => {\n    if (receiver.track) {\n      receiver.track.enabled = enable;\n    }\n  });\n}\n\nfunction enableSenderTracks(session: WebPhoneSession, enable: boolean): void {\n  const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n  const peerConnection = sessionDescriptionHandler.peerConnection;\n  if (!peerConnection) {\n    (session as any).logger.error('Peer connection closed.');\n    return;\n  }\n\n  peerConnection.getSenders().forEach((sender) => {\n    if (sender.track) {\n      sender.track.enabled = enable;\n    }\n  });\n}\n\nfunction setHold(session: WebPhoneSession, hold: boolean): Promise<void> {\n  return new Promise((resolve, reject) => {\n    // Just resolve if we are already in correct state\n    if (session.held === hold) {\n      resolve();\n      return;\n    }\n\n    const options: SessionInviteOptions = {\n      requestDelegate: {\n        onAccept: async (response): Promise<void> => {\n          session.held = hold;\n          const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n          const peerConnection = sessionDescriptionHandler.peerConnection;\n          const localSdp = peerConnection!.localDescription!.sdp;\n          const match = localSdp.match(/a=(sendrecv|sendonly|recvonly|inactive)/);\n          const direction = match ? match[1] : '';\n          session.__localHold = response.message.statusCode === 200 && direction === 'sendonly';\n          (session as any).logger.log('localhold is set to ' + session.__localHold);\n          enableReceiverTracks(session, !session.held);\n          enableSenderTracks(session, !session.held && !session.muted);\n          resolve();\n        },\n        onReject: (): void => {\n          (session as any).logger.warn('re-invite request was rejected');\n          enableReceiverTracks(session, !session.held);\n          enableSenderTracks(session, !session.held && !session.muted);\n          reject(new Error('re-invite request was rejected'));\n        },\n      },\n    };\n\n    // Session properties used to pass options to the SessionDescriptionHandler:\n    //\n    // 1) Session.sessionDescriptionHandlerOptions\n    //    SDH options for the initial INVITE transaction.\n    //    - Used in all cases when handling the initial INVITE transaction as either UAC or UAS.\n    //    - May be set directly at anytime.\n    //    - May optionally be set via constructor option.\n    //    - May optionally be set via options passed to Inviter.invite() or Invitation.accept().\n    //\n    // 2) Session.sessionDescriptionHandlerOptionsReInvite\n    //    SDH options for re-INVITE transactions.\n    //    - Used in all cases when handling a re-INVITE transaction as either UAC or UAS.\n    //    - May be set directly at anytime.\n    //    - May optionally be set via constructor option.\n    //    - May optionally be set via options passed to Session.invite().\n\n    const sessionDescriptionHandlerOptions =\n      session.sessionDescriptionHandlerOptionsReInvite as SessionDescriptionHandlerOptions;\n    sessionDescriptionHandlerOptions.hold = hold;\n    session.sessionDescriptionHandlerOptionsReInvite = sessionDescriptionHandlerOptions;\n\n    // Send re-INVITE\n    session\n      .invite(options)\n      .then(() => {\n        // preemptively enable/disable tracks\n        enableReceiverTracks(session, !hold);\n        enableSenderTracks(session, !hold && !session.muted);\n      })\n      .catch((error: Error) => {\n        if (error instanceof RequestPendingError) {\n          (session as any).logger.error('A hold request is already in progress.');\n        }\n        reject(error);\n      });\n  });\n}\n\nfunction stopPlaying(session: WebPhoneSession): void {\n  session.userAgent.audioHelper!.playOutgoing(false);\n  session.userAgent.audioHelper!.playIncoming(false);\n}\n\nexport function onSessionDescriptionHandlerCreated(session: WebPhoneSession): void {\n  if (!session.userAgent.enableQos) {\n    return;\n  }\n  (session as any).logger.log('SessionDescriptionHandler created');\n  startQosStatsCollection(session);\n  navigator.mediaDevices.enumerateDevices().then((devices) => {\n    devices.forEach((device) =>\n      (session as any).logger.log(`${device.kind} = ${device.label} ${JSON.stringify(device)}`),\n    );\n  });\n}\n\nfunction setupUserAgentCoreEvent(session: WebPhoneSession) {\n  if (session.__userAgentCoreEventsSetup) {\n    return;\n  }\n  const userAgentCore: WehPhoneUserAgentCore = session.userAgent.userAgentCore;\n  userAgentCore.on!(Events.Session.UpdateReceived, (payload) => session.emit!(Events.Session.UpdateReceived, payload));\n  userAgentCore.on!(Events.Session.MoveToRcv, (payload) => session.emit!(Events.Session.MoveToRcv, payload));\n  // RC_SIP_INFO event is for internal use\n  userAgentCore.on!('RC_SIP_INFO', (payload) => session.emit!('RC_SIP_INFO', payload));\n  session.__userAgentCoreEventsSetup = true;\n}\n\nfunction stopMediaStreamStats(session: WebPhoneSession) {\n  if (session.mediaStreams) {\n    (session as any).logger.log('Releasing media streams');\n    session.mediaStreams.release();\n  }\n}\n\nfunction onLocalHold(this: WebPhoneSession): boolean {\n  return this.__localHold!;\n}\n\nfunction setQosStats(this: WebPhoneSession, stats: QosStats) {\n  this.__qosStats!.cpuOS = stats.cpuOS || '0:0:0';\n  this.__qosStats!.cpuRC = stats.cpuRC || '0:0:0';\n  this.__qosStats!.ram = stats.ram || '0:0:0';\n  this.__qosStats!.netType = stats.netType || undefined;\n}\n","export const uuid = (): string =>\n  'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {\n    const r = (Math.random() * 16) | 0;\n    const v = c === 'x' ? r : (r & 0x3) | 0x8;\n    return v.toString(16);\n  });\n\nexport const extend = (dst: any = {}, src: any = {}): any => Object.assign(dst || {}, src || {});\n","export interface Command {\n  reqid: number;\n  command: string;\n  extraHeaders?: Array<string>;\n}\n\nexport const messages = {\n  park: { reqid: 1, command: 'callpark' },\n  startRecord: { reqid: 2, command: 'startcallrecord' },\n  stopRecord: { reqid: 3, command: 'stopcallrecord' },\n  flip: { reqid: 3, command: 'callflip', target: '' },\n  monitor: { reqid: 4, command: 'monitor' },\n  barge: { reqid: 5, command: 'barge' },\n  whisper: { reqid: 6, command: 'whisper' },\n  takeover: { reqid: 7, command: 'takeover' },\n  toVoicemail: { reqid: 11, command: 'toVoicemail' },\n  ignore: { reqid: 12, command: 'ignore' },\n  receiveConfirm: { reqid: 17, command: 'receiveConfirm' },\n  replyWithMessage: { reqid: 14, command: 'replyWithMessage' },\n};\n\nexport const uuidKey = 'rc-webPhone-uuid';\n\nexport const responseTimeout = 60000;\n\nexport const defaultMediaConstraints = {\n  audio: true,\n  video: false,\n};\n\nexport const defaultStunServers = ['stun.l.google.com:19302'];\nexport const defaultSipErrorCodes = ['408', '502', '503', '504'];\nexport const defaultLogLevel = 'debug';\n","/*\n * @Author: Elias Sun(elias.sun@ringcentral.com)\n * @Date: Dec. 15, 2018\n * Copyright © RingCentral. All rights reserved.\n */\n\nimport type { SessionDescriptionHandler } from 'sip.js/lib/platform/web';\nimport type { WebPhoneSession } from './session';\nimport type { RTPReport } from './rtpReport';\nimport { Events } from './events';\n\nenum ConnectionState {\n  new = 'mediaConnectionStateNew',\n  checking = 'mediaConnectionStateChecking',\n  connected = 'mediaConnectionStateConnected',\n  completed = 'mediaConnectionStateCompleted',\n  failed = 'mediaConnectionStateFailed',\n  disconnected = 'mediaConnectionStateDisconnected',\n  closed = 'mediaConnectionStateClosed',\n}\n\nexport enum Browsers {\n  MSIE = 'IE',\n  Chrome = 'Chrome',\n  Firefox = 'Firefox',\n  Safari = 'Safari',\n  Opera = 'Opera',\n}\n\nexport class WebPhoneRTPReport implements RTPReport {\n  public outboundRtpReport = {};\n  public inboundRtpReport = {};\n  public rttMs = {};\n  public localCandidates: any[] = [];\n  public remoteCandidates: any[] = [];\n  public transport = {};\n}\n\n/** Media Streams class to monitor media stats */\nexport default class MediaStreams {\n  /**\n   * Reference to MediaStreamsImpl object. This Object has all the functions to handle media streams\n   *\n   * MediaStreams class is a wrapper around MediaStreamsImpl\n   */\n  public mediaStreamsImpl: MediaStreamsImpl;\n  /** Remove iceconnectionstatechange event listeners and stop collecting stats */\n  public release: any;\n  /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */\n  public reconnectMedia: any;\n  /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */\n  public getMediaStats: (callback: (report: RTPReport) => any, interval: number) => void;\n  /** Stop collecting stats */\n  public stopMediaStats: () => void;\n\n  public constructor(session: WebPhoneSession) {\n    this.mediaStreamsImpl = new MediaStreamsImpl(session);\n    this.release = this.mediaStreamsImpl.release.bind(this.mediaStreamsImpl);\n    this.reconnectMedia = this.mediaStreamsImpl.reconnectMedia.bind(this.mediaStreamsImpl);\n    this.getMediaStats = this.mediaStreamsImpl.getMediaStats.bind(this.mediaStreamsImpl);\n    this.stopMediaStats = this.mediaStreamsImpl.stopMediaStats.bind(this.mediaStreamsImpl);\n  }\n\n  /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */\n  public set onRTPStat(callback: (stats: RTPReport, session: WebPhoneSession) => any) {\n    this.mediaStreamsImpl.onRTPStat = callback;\n  }\n  public get onRTPStat() {\n    return this.mediaStreamsImpl.onRTPStat;\n  }\n\n  /**\n   * Set a function to be called when `peerConnetion` iceconnectionstatechange changes\n   * @param callback function to be called when `peerConnetion` iceconnectionstatechange changes\n   */\n  public set onMediaConnectionStateChange(callback: (state: string, session: WebPhoneSession) => any) {\n    this.mediaStreamsImpl.onMediaConnectionStateChange = callback;\n  }\n  public get onMediaConnectionStateChange() {\n    return this.mediaStreamsImpl.onMediaConnectionStateChange;\n  }\n}\n\n/**\n * MediaStreams Implementation\n */\nexport class MediaStreamsImpl {\n  public preRTT: any;\n  /**\n   * Set a function to be called when `peerConnection` iceconnectionstatechange changes\n   *\n   * @param callback function to be called when `peerConnection` iceconnectionstatechange changes\n   */\n  public onMediaConnectionStateChange?: (state: string, session: WebPhoneSession) => any;\n  /**\n   * Set a function to be called when media stats are generated\n   * @param callback optionally, you can set a function on MediaStreams object. This will be treated as a default callback when media stats are generated if a callback function is not passed with `getMediaStats` function\n   */\n  public onRTPStat?: (stats: RTPReport, session: WebPhoneSession) => any;\n\n  private ktag = 'MediaStreams';\n  private session: WebPhoneSession;\n  private isChrome: boolean;\n  private isFirefox: boolean;\n  private isSafari: boolean;\n  private mediaStatsTimer: any;\n\n  public constructor(session: WebPhoneSession) {\n    this.ktag = 'MediaStreams';\n    if (!session) {\n      throw new Error(`${this.ktag}: Cannot initial media stream monitoring. Session is not passed`);\n    }\n    this.session = session;\n    this.onMediaConnectionStateChange = undefined;\n    this.onPeerConnectionStateChange = this.onPeerConnectionStateChange.bind(this);\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    sessionDescriptionHandler.peerConnection!.addEventListener(\n      'iceconnectionstatechange',\n      this.onPeerConnectionStateChange,\n    );\n    this.isChrome = this.browser() === Browsers.Chrome;\n    this.isFirefox = this.browser() === Browsers.Firefox;\n    this.isSafari = this.browser() === Browsers.Safari;\n\n    this.preRTT = { currentRoundTripTime: 0 };\n\n    if (!this.isChrome && !this.isFirefox && !this.isSafari) {\n      (this.session as any).logger.error(\n        `${this.ktag} The web browser ${this.browser()} is not in the recommended list [Chrome, Safari, Firefox] !`,\n      );\n    }\n  }\n\n  /**\n   * @param callback function which will be called every time media stats are generated. Will override callback passed to `onRTPStat`\n   * @param interval interval for the recurring call to the callback function\n   * @returns\n   */\n  public getMediaStats(callback?: (report: RTPReport) => any, interval = 1000) {\n    if (!this.onRTPStat && !callback) {\n      (this.session as any).logger.debug(\n        `${this.ktag}: No event callback provided to call when media starts are generated`,\n      );\n      return;\n    }\n    if (callback) {\n      this.onRTPStat = callback;\n    }\n    if (this.mediaStatsTimer) {\n      clearTimeout(this.mediaStatsTimer);\n      this.mediaStatsTimer = null;\n    }\n    this.mediaStatsTimer = setInterval(() => {\n      this.mediaStatsTimerCallback();\n    }, interval);\n  }\n\n  /**\n   * Stop collecting stats. This will stop calling the registered function (either that was registered using `onRTPstat` or using `getMediaStats`)\n   */\n  public stopMediaStats() {\n    if (this.mediaStatsTimer) {\n      clearTimeout(this.mediaStatsTimer);\n      this.onRTPStat = undefined;\n    }\n  }\n\n  /**\n   * Reconnect media and send reinvite on the existing session.\n   *\n   * This will also recreate SDP and send it over with the reinvite message\n   */\n  public reconnectMedia(): Promise<void> {\n    return new Promise((resolve, reject) => {\n      this.session.reinvite!()\n        .then(() => resolve())\n        .catch(reject);\n    });\n  }\n\n  /**\n   * Remove iceconnectionstatechange event listeners and stop collecting stats\n   */\n  public release() {\n    if (this.mediaStatsTimer) {\n      clearTimeout(this.mediaStatsTimer);\n      this.mediaStatsTimer = null;\n    }\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    if (!sessionDescriptionHandler.peerConnection) {\n      return;\n    }\n    sessionDescriptionHandler.peerConnection.removeEventListener(\n      'iceconnectionstatechange',\n      this.onPeerConnectionStateChange,\n    );\n  }\n\n  private get tag() {\n    return this.ktag;\n  }\n\n  /**\n   * Function to find what browser is being used depending on the `navigator.userAgent` value\n   * @returns Browsers enum value to denote what browser if being used\n   */\n  public browser() {\n    if (navigator.userAgent.search('MSIE') >= 0) {\n      return Browsers.MSIE;\n    } else if (navigator.userAgent.search('Chrome') >= 0) {\n      return Browsers.Chrome;\n    } else if (navigator.userAgent.search('Firefox') >= 0) {\n      return Browsers.Firefox;\n    } else if (navigator.userAgent.search('Safari') >= 0 && navigator.userAgent.search('Chrome') < 0) {\n      return Browsers.Safari;\n    } else if (navigator.userAgent.search('Opera') >= 0) {\n      return Browsers.Opera;\n    }\n    return 'unknown';\n  }\n\n  private mediaStatsTimerCallback() {\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection;\n    if (!peerConnection) {\n      (this.session as any).logger.error(`${this.ktag}: The peer connection cannot be null`);\n      return;\n    }\n    const connectionState = peerConnection.iceConnectionState;\n    if (connectionState !== 'connected' && connectionState !== 'completed') {\n      this.preRTT.currentRoundTripTime = 0;\n      return;\n    }\n    this.getRTPReport(new WebPhoneRTPReport());\n  }\n\n  private onPeerConnectionStateChange() {\n    let eventName = 'unknown';\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    const state = sessionDescriptionHandler.peerConnection!.iceConnectionState;\n    if (Object.hasOwn(ConnectionState, state)) {\n      eventName = ConnectionState[state];\n      if (this.onMediaConnectionStateChange) {\n        this.onMediaConnectionStateChange(eventName, this.session);\n      }\n      this.session.emit!(eventName);\n    } else {\n      (this.session as any).logger.debug(`${this.tag}: Unknown peerConnection state: ${state}`);\n    }\n    (this.session as any).logger.debug(`${this.tag}: peerConnection State: ${state}`);\n  }\n\n  private async getRTPReport(report: RTPReport) {\n    const sessionDescriptionHandler = this.session.sessionDescriptionHandler as SessionDescriptionHandler;\n    const peerConnection = sessionDescriptionHandler.peerConnection!;\n    try {\n      const stats = await peerConnection.getStats();\n      stats.forEach((stat: { [key: string]: any }) => {\n        switch (stat.type) {\n          case 'inbound-rtp':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'bytesReceived':\n                case 'packetsReceived':\n                case 'jitter':\n                case 'packetsLost':\n                case 'fractionLost':\n                case 'mediaType':\n                  (report.inboundRtpReport as any)[statName] = stat[statName];\n                  break;\n                case 'roundTripTime':\n                  report.rttMs[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          case 'outbound-rtp':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'bytesSent':\n                case 'packetsSent':\n                case 'mediaType':\n                  (report.outboundRtpReport as any)[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          case 'candidate-pair':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'currentRoundTripTime':\n                  report.rttMs[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          case 'local-candidate': {\n            const local_candidate: { [key: string]: number } = {};\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'id':\n                case 'isRemote':\n                case 'ip':\n                case 'candidateType':\n                case 'networkType':\n                case 'priority':\n                case 'port':\n                  local_candidate[statName] = stat[statName];\n                  break;\n              }\n            });\n            report.localCandidates!.push(local_candidate);\n            break;\n          }\n          case 'remote-candidate': {\n            const remote_candidate: { [key: string]: number } = {};\n            Object.keys(stat).forEach((statName: string) => {\n              switch (statName) {\n                case 'id':\n                case 'isRemote':\n                case 'ip':\n                case 'priority':\n                case 'port':\n                case 'candidateType':\n                  remote_candidate[statName] = stat[statName];\n                  break;\n              }\n            });\n            report.remoteCandidates!.push(remote_candidate);\n            break;\n          }\n          case 'media-source':\n            report.outboundRtpReport.rtpLocalAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n            break;\n          case 'track':\n            if (!stat.remoteSource) {\n              break;\n            }\n            report.inboundRtpReport.rtpRemoteAudioLevel = stat.audioLevel ? stat.audioLevel : 0;\n            break;\n          case 'transport':\n            Object.keys(stat).forEach((statName) => {\n              switch (statName) {\n                case 'dtlsState':\n                case 'packetsSent':\n                case 'packetsReceived':\n                case 'selectedCandidatePairChanges':\n                case 'selectedCandidatePairId':\n                  report.transport[statName] = stat[statName];\n                  break;\n              }\n            });\n            break;\n          default:\n            break;\n        }\n      });\n\n      if (!Object.hasOwn(report.rttMs, 'currentRoundTripTime')) {\n        if (!Object.hasOwn(report.rttMs, 'roundTripTime')) {\n          report.rttMs.currentRoundTripTime = this.preRTT.currentRoundTripTime;\n        } else {\n          report.rttMs.currentRoundTripTime = report.rttMs.roundTripTime; // for Firefox\n          delete report.rttMs.roundTripTime;\n        }\n      } else {\n        report.rttMs.currentRoundTripTime = Math.round(report.rttMs.currentRoundTripTime! * 1000);\n      }\n\n      if (Object.hasOwn(report.rttMs, 'currentRoundTripTime')) {\n        this.preRTT.currentRoundTripTime = report.rttMs.currentRoundTripTime;\n      }\n      this.onRTPStat!(report, this.session);\n      this.session.emit!(Events.Session.RTPStat, report);\n    } catch (e) {\n      (this.session as any).logger.error(`${this.tag}: Unable to get media stats: ${(e as any).message}`);\n    }\n  }\n}\n\nexport { MediaStreams };\n","export interface RTPReport {\n  outboundRtpReport: OutboundRtpReport;\n  inboundRtpReport: InboundRtpReport;\n  rttMs: RttReport;\n  localCandidates?: object[];\n  remoteCandidates?: object[];\n  transport?: any;\n}\n\nexport interface InboundRtpReport {\n  mediaType?: string;\n  packetsReceived?: number;\n  bytesReceived?: number;\n  packetsLost?: number;\n  jitter?: number;\n  fractionLost?: number;\n  roundTripTime?: number;\n  rtpRemoteAudioLevel?: number;\n}\n\nexport interface OutboundRtpReport {\n  mediaType?: string;\n  packetsSent?: number;\n  bytesSent?: number;\n  rtpLocalAudioLevel?: number;\n}\n\nexport interface RttReport {\n  currentRoundTripTime?: number;\n  roundTripTime?: number;\n}\n\nexport function isNoAudio(report: RTPReport): boolean {\n  if (!report.inboundRtpReport) {\n    return true;\n  }\n  if (!report.outboundRtpReport) {\n    return true;\n  }\n  if (report.inboundRtpReport.packetsReceived === 0 || report.outboundRtpReport.packetsSent === 0) {\n    return true;\n  }\n  return false;\n}\n","import { SessionState, Publisher, UserAgent } from 'sip.js';\n\nimport type { WebPhoneSession } from './session';\nimport type { SessionDescriptionHandler } from 'sip.js/lib/platform/web';\nimport { Events } from './events';\n\nconst formatFloat = (input: any): string => parseFloat(input.toString()).toFixed(2);\n\nexport const startQosStatsCollection = (session: WebPhoneSession): void => {\n  const qosStatsObj = getQoSStatsTemplate();\n\n  qosStatsObj.callID = session.request.callId || '';\n  qosStatsObj.fromTag = session.request.fromTag || '';\n  qosStatsObj.toTag = session.request.toTag || '';\n  qosStatsObj.localID = session.request.getHeader('From')!;\n  qosStatsObj.remoteID = session.request.getHeader('To')!;\n  qosStatsObj.origID = session.request.getHeader('From')!;\n\n  const refreshIntervalId = setInterval(async () => {\n    const sessionDescriptionHandler = session.sessionDescriptionHandler as SessionDescriptionHandler;\n    if (!sessionDescriptionHandler?.peerConnection) {\n      (session as any).logger.error('There is no PeerConnection, can not getStats');\n      return;\n    }\n    const getStatsResult = await sessionDescriptionHandler.peerConnection.getStats();\n    (session as any).logger.log(`getStatsResult ${JSON.stringify(getStatsResult)}`);\n    qosStatsObj.status = true;\n    let network = '';\n    getStatsResult.forEach((item: any) => {\n      switch (item.type) {\n        case 'local-candidate':\n          if (item.candidateType === 'srflx') {\n            network = typeof item.networkType === 'string' ? item.networkType : getNetworkType(item.networkType);\n            qosStatsObj.localAddr = item.ip + ':' + item.port;\n            qosStatsObj.localcandidate = item;\n          }\n          break;\n        case 'remote-candidate':\n          if (item.candidateType === 'host') {\n            qosStatsObj.remoteAddr = item.ip + ':' + item.port;\n            qosStatsObj.remotecandidate = item;\n          }\n          break;\n        case 'inbound-rtp': {\n          qosStatsObj.jitterBufferDiscardRate = item.packetsDiscarded / item.packetsReceived;\n          qosStatsObj.inboundPacketsLost = item.packetsLost;\n          qosStatsObj.inboundPacketsReceived = item.packetsReceived; // packetsReceived\n          const jitterBufferMs: number =\n            parseFloat(item.jitterBufferEmittedCount) > 0\n              ? (parseFloat(item.jitterBufferDelay) / parseFloat(item.jitterBufferEmittedCount)) * 1000\n              : 0;\n          qosStatsObj.totalSumJitter += jitterBufferMs;\n          qosStatsObj.totalIntervalCount += 1;\n          qosStatsObj.NLR = formatFloat((item.packetsLost / (item.packetsLost + item.packetsReceived)) * 100);\n          qosStatsObj.JBM = Math.max(qosStatsObj.JBM, jitterBufferMs);\n          qosStatsObj.netType = addToMap(qosStatsObj.netType, network);\n          break;\n        }\n        case 'candidate-pair':\n          qosStatsObj.RTD = Math.round((item.currentRoundTripTime / 2) * 1000);\n          break;\n        case 'outbound-rtp':\n          qosStatsObj.outboundPacketsSent = item.packetsSent;\n          break;\n        case 'remote-inbound-rtp':\n          qosStatsObj.outboundPacketsLost = item.packetsLost;\n          break;\n        default:\n          break;\n      }\n    });\n  }, session.userAgent.qosCollectInterval);\n\n  session.stateChange.addListener((newState) => {\n    if (newState === SessionState.Terminated) {\n      (session as any).logger.log('Release media streams');\n      session.mediaStreams?.release();\n      publishQosStats(session, qosStatsObj);\n      refreshIntervalId && clearInterval(refreshIntervalId);\n    }\n  });\n};\n\nconst publishQosStats = async (session: WebPhoneSession, qosStatsObj: QosStats, _options: any = {}): Promise<void> => {\n  const options = _options || {};\n\n  const targetUrl = options.targetUrl || 'sip:rtcpxr@rtcpxr.ringcentral.com:5060';\n  const event = options.event || 'vq-rtcpxr';\n  options.expires = 60;\n  options.contentType = 'application/vq-rtcpxr';\n  options.extraHeaders = (options.extraHeaders || []).concat(session.userAgent.defaultHeaders);\n  const cpuOS = session.__qosStats!.cpuOS;\n  const cpuRC = session.__qosStats!.cpuRC;\n  const ram = session.__qosStats!.ram;\n  const networkType = session.__qosStats!.netType || calculateNetworkUsage(qosStatsObj) || '';\n  let effectiveType = '';\n  if ('connection' in navigator) {\n    effectiveType = (navigator as any).connection.effectiveType;\n  }\n  options.extraHeaders.push(\n    `p-rc-client-info:cpuRC=${cpuRC};cpuOS=${cpuOS};netType=${networkType};ram=${ram};effectiveType=${effectiveType}`,\n  );\n  (session as any).logger.log(`QOS stats ${JSON.stringify(qosStatsObj)}`);\n  const calculatedStatsObj = calculateStats(qosStatsObj);\n  const body = createPublishBody(calculatedStatsObj);\n  const publisher = new Publisher(session.userAgent, UserAgent.makeURI(targetUrl)!, event, options);\n  await publisher.publish(body);\n  (session as any).logger.log('Local Candidate: ' + JSON.stringify(qosStatsObj.localcandidate));\n  (session as any).logger.log('Remote Candidate: ' + JSON.stringify(qosStatsObj.remotecandidate));\n  qosStatsObj.status = false;\n  await publisher.dispose();\n  session.emit!(Events.Session.QOSPublished, body);\n};\n\nconst calculateNetworkUsage = (qosStatsObj: QosStats): string => {\n  const networkType = [];\n  for (const [key, value] of Object.entries(qosStatsObj.netType)) {\n    networkType.push(key + ':' + formatFloat(((value as any) * 100) / qosStatsObj.totalIntervalCount));\n  }\n  return networkType.join();\n};\n\nconst calculateStats = (qosStatsObj: QosStats): QosStats => {\n  const rawNLR =\n    (qosStatsObj.inboundPacketsLost * 100) / (qosStatsObj.inboundPacketsReceived + qosStatsObj.inboundPacketsLost) || 0;\n  const rawJBN = qosStatsObj.totalIntervalCount > 0 ? qosStatsObj.totalSumJitter / qosStatsObj.totalIntervalCount : 0;\n\n  return {\n    ...qosStatsObj,\n    NLR: formatFloat(rawNLR),\n    JBN: formatFloat(rawJBN), // JitterBufferNominal\n    JDR: formatFloat(qosStatsObj.jitterBufferDiscardRate), // JitterBufferDiscardRate\n    MOSLQ: calculateMos(\n      qosStatsObj.inboundPacketsLost / (qosStatsObj.inboundPacketsLost + qosStatsObj.inboundPacketsReceived),\n    ),\n    MOSCQ: calculateMos(\n      qosStatsObj.outboundPacketsLost / (qosStatsObj.outboundPacketsLost + qosStatsObj.outboundPacketsSent),\n    ),\n  };\n};\n\nconst createPublishBody = (calculatedStatsObj: QosStats): string => {\n  const NLR = calculatedStatsObj.NLR || 0;\n  const JBM = calculatedStatsObj.JBM || 0;\n  const JBN = calculatedStatsObj.JBN || 0;\n  const JDR = calculatedStatsObj.JDR || 0;\n  const MOSLQ = calculatedStatsObj.MOSLQ || 0;\n  const MOSCQ = calculatedStatsObj.MOSCQ || 0;\n  const RTD = calculatedStatsObj.RTD || 0;\n\n  const callID = calculatedStatsObj.callID || '';\n  const fromTag = calculatedStatsObj.fromTag || '';\n  const toTag = calculatedStatsObj.toTag || '';\n  const localId = calculatedStatsObj.localID || '';\n  const remoteId = calculatedStatsObj.remoteID || '';\n\n  const localAddr = calculatedStatsObj.localAddr || '';\n  const remoteAddr = calculatedStatsObj.remoteAddr || '';\n\n  return (\n    'VQSessionReport: CallTerm\\r\\n' +\n    `CallID: ${callID}\\r\\n` +\n    `LocalID: ${localId}\\r\\n` +\n    `RemoteID: ${remoteId}\\r\\n` +\n    `OrigID: ${localId}\\r\\n` +\n    `LocalAddr: IP=${localAddr} SSRC=0x00000000\\r\\n` +\n    `RemoteAddr: IP=${remoteAddr} SSRC=0x00000000\\r\\n` +\n    'LocalMetrics:\\r\\n' +\n    'Timestamps: START=0 STOP=0\\r\\n' +\n    'SessionDesc: PT=0 PD=opus SR=0 FD=0 FPP=0 PPS=0 PLC=0 SSUP=on\\r\\n' +\n    `JitterBuffer: JBA=0 JBR=0 JBN=${JBN} JBM=${formatFloat(JBM)} JBX=0\\r\\n` +\n    `PacketLoss: NLR=${NLR} JDR=${JDR}\\r\\n` +\n    'BurstGapLoss: BLD=0 BD=0 GLD=0 GD=0 GMIN=0\\r\\n' +\n    `Delay: RTD=${RTD} ESD=0 SOWD=0 IAJ=0\\r\\n` +\n    `QualityEst: MOSLQ=${formatFloat(MOSLQ)} MOSCQ=${formatFloat(MOSCQ)}\\r\\n` +\n    `DialogID: ${callID};to-tag=${toTag};from-tag=${fromTag}`\n  );\n};\n\nconst getQoSStatsTemplate = (): QosStats => ({\n  localAddr: '',\n  remoteAddr: '',\n  callID: '',\n  localID: '',\n  remoteID: '',\n  origID: '',\n  fromTag: '',\n  toTag: '',\n  timestamp: {\n    start: '',\n    stop: '',\n  },\n\n  netType: {},\n\n  jitterBufferNominal: 0,\n  jitterBufferMax: 0,\n\n  jitterBufferDiscardRate: 0,\n\n  totalSumJitter: 0,\n  totalIntervalCount: 0,\n\n  NLR: '',\n  JBM: 0,\n  JBN: '',\n  JDR: '',\n  MOSLQ: 0,\n  MOSCQ: 0,\n  RTD: 0,\n\n  status: false,\n  localcandidate: {},\n  remotecandidate: {},\n\n  inboundPacketsLost: 0,\n  inboundPacketsReceived: 0,\n  outboundPacketsLost: 0,\n  outboundPacketsSent: 0,\n});\n\nconst addToMap = (map: any = {}, key: string): any => ({\n  ...map,\n  [key]: (key in map ? parseInt(map[key], 10) : 0) + 1,\n});\n\nconst networkTypeMap: { [key: string]: string } = {\n  bluetooth: 'Bluetooth',\n  cellular: 'Cellulars',\n  ethernet: 'Ethernet',\n  wifi: 'WiFi',\n  vpn: 'VPN',\n  wimax: 'WiMax',\n  '2g': '2G',\n  '3g': '3G',\n  '4g': '4G',\n};\n\n// TODO: find reliable way to find network type , use navigator.connection.type?\nconst getNetworkType = (connectionType: any): string => {\n  const sysNetwork: string = connectionType.systemNetworkType || 'unknown';\n  const localNetwork: string = connectionType || 'unknown';\n  const networkType: string = !sysNetwork || sysNetwork === 'unknown' ? localNetwork : sysNetwork;\n  return networkType in networkTypeMap ? networkTypeMap[networkType] : networkType;\n};\n\nexport interface QosStats {\n  localAddr: string;\n  remoteAddr: string;\n  callID: string;\n  localID: string;\n  remoteID: string;\n  origID: string;\n  fromTag: string;\n  toTag: string;\n  timestamp: {\n    start: string;\n    stop: string;\n  };\n\n  netType: any;\n\n  jitterBufferNominal: number;\n  jitterBufferMax: number;\n\n  jitterBufferDiscardRate: number;\n\n  totalSumJitter: number;\n  totalIntervalCount: number;\n\n  NLR: string;\n  JBM: number;\n  JBN: string;\n  JDR: string;\n  MOSLQ: number;\n  MOSCQ: number;\n  RTD: number;\n\n  status: boolean;\n\n  localcandidate: any;\n  remotecandidate: any;\n\n  inboundPacketsLost: number;\n  inboundPacketsReceived: number;\n  outboundPacketsLost: number;\n  outboundPacketsSent: number;\n}\n\nfunction calculateMos(packetLoss: number) {\n  if (packetLoss <= 0.008) {\n    return 4.5;\n  }\n  if (packetLoss > 0.45) {\n    return 1.0;\n  }\n  const bpl = 17.2647;\n  const r = 93.2062077233 - 95.0 * ((packetLoss * 100) / (packetLoss * 100 + bpl)) + 4;\n  let mos = 2.06405 + 0.031738 * r - 0.000356641 * r * r + 2.93143 * Math.pow(10, -6) * r * r * r;\n  if (mos < 1) {\n    return 1.0;\n  }\n  if (mos > 4.5) {\n    return 4.5;\n  }\n  if (packetLoss >= 0.35 && mos > 2.7) {\n    mos = 2.7;\n  } else if (packetLoss >= 0.3 && mos > 3.0) {\n    mos = 3.0;\n  } else if (packetLoss >= 0.2 && mos > 3.6) {\n    mos = 3.6;\n  } else if (packetLoss >= 0.15 && mos > 3.7) {\n    mos = 3.7;\n  } else if (packetLoss >= 0.1 && mos > 3.9) {\n    mos = 4.1;\n  } else if (packetLoss >= 0.05 && mos > 4.1) {\n    mos = 4.3;\n  } else if (packetLoss >= 0.03 && mos > 4.1) {\n    mos = 4.4;\n  }\n  return mos;\n}\n","import { fromBodyLegacy } from \"../core/messages/body.js\";\nimport { C } from \"../core/messages/methods/constants.js\";\nimport { EmitterImpl } from \"./emitter.js\";\nimport { PublisherState } from \"./publisher-state.js\";\n/**\n * A publisher publishes a publication (outgoing PUBLISH).\n * @public\n */\nexport class Publisher {\n    /**\n     * Constructs a new instance of the `Publisher` class.\n     *\n     * @param userAgent - User agent. See {@link UserAgent} for details.\n     * @param targetURI - Request URI identifying the target of the message.\n     * @param eventType - The event type identifying the published document.\n     * @param options - Options bucket. See {@link PublisherOptions} for details.\n     */\n    constructor(userAgent, targetURI, eventType, options = {}) {\n        this.disposed = false;\n        /** The publication state. */\n        this._state = PublisherState.Initial;\n        // state emitter\n        this._stateEventEmitter = new EmitterImpl();\n        this.userAgent = userAgent;\n        options.extraHeaders = (options.extraHeaders || []).slice();\n        options.contentType = options.contentType || \"text/plain\";\n        if (typeof options.expires !== \"number\" || options.expires % 1 !== 0) {\n            options.expires = 3600;\n        }\n        else {\n            options.expires = Number(options.expires);\n        }\n        if (typeof options.unpublishOnClose !== \"boolean\") {\n            options.unpublishOnClose = true;\n        }\n        this.target = targetURI;\n        this.event = eventType;\n        this.options = options;\n        this.pubRequestExpires = options.expires;\n        this.logger = userAgent.getLogger(\"sip.Publisher\");\n        const params = options.params || {};\n        const fromURI = params.fromUri ? params.fromUri : userAgent.userAgentCore.configuration.aor;\n        const toURI = params.toUri ? params.toUri : targetURI;\n        let body;\n        if (options.body && options.contentType) {\n            const contentDisposition = \"render\";\n            const contentType = options.contentType;\n            const content = options.body;\n            body = {\n                contentDisposition,\n                contentType,\n                content\n            };\n        }\n        const extraHeaders = (options.extraHeaders || []).slice();\n        // Build the request\n        this.request = userAgent.userAgentCore.makeOutgoingRequestMessage(C.PUBLISH, targetURI, fromURI, toURI, params, extraHeaders, body);\n        // Identifier\n        this.id = this.target.toString() + \":\" + this.event;\n        // Add to the user agent's publisher collection.\n        this.userAgent._publishers[this.id] = this;\n    }\n    /**\n     * Destructor.\n     */\n    dispose() {\n        if (this.disposed) {\n            return Promise.resolve();\n        }\n        this.disposed = true;\n        this.logger.log(`Publisher ${this.id} in state ${this.state} is being disposed`);\n        // Remove from the user agent's publisher collection\n        delete this.userAgent._publishers[this.id];\n        // Send unpublish, if requested\n        if (this.options.unpublishOnClose && this.state === PublisherState.Published) {\n            return this.unpublish();\n        }\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        this.pubRequestEtag = undefined;\n        return Promise.resolve();\n    }\n    /** The publication state. */\n    get state() {\n        return this._state;\n    }\n    /** Emits when the publisher state changes. */\n    get stateChange() {\n        return this._stateEventEmitter;\n    }\n    /**\n     * Publish.\n     * @param content - Body to publish\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    publish(content, options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // is Initial or Modify request\n        this.options.body = content;\n        this.pubRequestBody = this.options.body;\n        if (this.pubRequestExpires === 0) {\n            // This is Initial request after unpublish\n            if (this.options.expires === undefined) {\n                throw new Error(\"Expires undefined.\");\n            }\n            this.pubRequestExpires = this.options.expires;\n            this.pubRequestEtag = undefined;\n        }\n        this.sendPublishRequest();\n        return Promise.resolve();\n    }\n    /**\n     * Unpublish.\n     */\n    // eslint-disable-next-line @typescript-eslint/no-unused-vars\n    unpublish(options = {}) {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        this.pubRequestBody = undefined;\n        this.pubRequestExpires = 0;\n        if (this.pubRequestEtag !== undefined) {\n            this.sendPublishRequest();\n        }\n        return Promise.resolve();\n    }\n    /** @internal */\n    receiveResponse(response) {\n        const statusCode = response.statusCode || 0;\n        switch (true) {\n            case /^1[0-9]{2}$/.test(statusCode.toString()):\n                break;\n            case /^2[0-9]{2}$/.test(statusCode.toString()):\n                // Set SIP-Etag\n                if (response.hasHeader(\"SIP-ETag\")) {\n                    this.pubRequestEtag = response.getHeader(\"SIP-ETag\");\n                }\n                else {\n                    this.logger.warn(\"SIP-ETag header missing in a 200-class response to PUBLISH\");\n                }\n                // Update Expire\n                if (response.hasHeader(\"Expires\")) {\n                    const expires = Number(response.getHeader(\"Expires\"));\n                    if (typeof expires === \"number\" && expires >= 0 && expires <= this.pubRequestExpires) {\n                        this.pubRequestExpires = expires;\n                    }\n                    else {\n                        this.logger.warn(\"Bad Expires header in a 200-class response to PUBLISH\");\n                    }\n                }\n                else {\n                    this.logger.warn(\"Expires header missing in a 200-class response to PUBLISH\");\n                }\n                if (this.pubRequestExpires !== 0) {\n                    // Schedule refresh\n                    this.publishRefreshTimer = setTimeout(() => this.refreshRequest(), this.pubRequestExpires * 900);\n                    if (this._state !== PublisherState.Published) {\n                        this.stateTransition(PublisherState.Published);\n                    }\n                }\n                else {\n                    this.stateTransition(PublisherState.Unpublished);\n                }\n                break;\n            case /^412$/.test(statusCode.toString()):\n                // 412 code means no matching ETag - possibly the PUBLISH expired\n                // Resubmit as new request, if the current request is not a \"remove\"\n                if (this.pubRequestEtag !== undefined && this.pubRequestExpires !== 0) {\n                    this.logger.warn(\"412 response to PUBLISH, recovering\");\n                    this.pubRequestEtag = undefined;\n                    if (this.options.body === undefined) {\n                        throw new Error(\"Body undefined.\");\n                    }\n                    this.publish(this.options.body);\n                }\n                else {\n                    this.logger.warn(\"412 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition(PublisherState.Unpublished);\n                    this.stateTransition(PublisherState.Terminated);\n                }\n                break;\n            case /^423$/.test(statusCode.toString()):\n                // 423 code means we need to adjust the Expires interval up\n                if (this.pubRequestExpires !== 0 && response.hasHeader(\"Min-Expires\")) {\n                    const minExpires = Number(response.getHeader(\"Min-Expires\"));\n                    if (typeof minExpires === \"number\" || minExpires > this.pubRequestExpires) {\n                        this.logger.warn(\"423 code in response to PUBLISH, adjusting the Expires value and trying to recover\");\n                        this.pubRequestExpires = minExpires;\n                        if (this.options.body === undefined) {\n                            throw new Error(\"Body undefined.\");\n                        }\n                        this.publish(this.options.body);\n                    }\n                    else {\n                        this.logger.warn(\"Bad 423 response Min-Expires header received for PUBLISH\");\n                        this.pubRequestExpires = 0;\n                        this.stateTransition(PublisherState.Unpublished);\n                        this.stateTransition(PublisherState.Terminated);\n                    }\n                }\n                else {\n                    this.logger.warn(\"423 response to PUBLISH, recovery failed\");\n                    this.pubRequestExpires = 0;\n                    this.stateTransition(PublisherState.Unpublished);\n                    this.stateTransition(PublisherState.Terminated);\n                }\n                break;\n            default:\n                this.pubRequestExpires = 0;\n                this.stateTransition(PublisherState.Unpublished);\n                this.stateTransition(PublisherState.Terminated);\n                break;\n        }\n        // Do the cleanup\n        if (this.pubRequestExpires === 0) {\n            if (this.publishRefreshTimer) {\n                clearTimeout(this.publishRefreshTimer);\n                this.publishRefreshTimer = undefined;\n            }\n            this.pubRequestBody = undefined;\n            this.pubRequestEtag = undefined;\n        }\n    }\n    /** @internal */\n    send() {\n        return this.userAgent.userAgentCore.publish(this.request, {\n            onAccept: (response) => this.receiveResponse(response.message),\n            onProgress: (response) => this.receiveResponse(response.message),\n            onRedirect: (response) => this.receiveResponse(response.message),\n            onReject: (response) => this.receiveResponse(response.message),\n            onTrying: (response) => this.receiveResponse(response.message)\n        });\n    }\n    refreshRequest() {\n        // Clean up before the run\n        if (this.publishRefreshTimer) {\n            clearTimeout(this.publishRefreshTimer);\n            this.publishRefreshTimer = undefined;\n        }\n        // This is Refresh request\n        this.pubRequestBody = undefined;\n        if (this.pubRequestEtag === undefined) {\n            throw new Error(\"Etag undefined\");\n        }\n        if (this.pubRequestExpires === 0) {\n            throw new Error(\"Expires zero\");\n        }\n        this.sendPublishRequest();\n    }\n    sendPublishRequest() {\n        const reqOptions = Object.assign({}, this.options);\n        reqOptions.extraHeaders = (this.options.extraHeaders || []).slice();\n        reqOptions.extraHeaders.push(\"Event: \" + this.event);\n        reqOptions.extraHeaders.push(\"Expires: \" + this.pubRequestExpires);\n        if (this.pubRequestEtag !== undefined) {\n            reqOptions.extraHeaders.push(\"SIP-If-Match: \" + this.pubRequestEtag);\n        }\n        const ruri = this.target;\n        const params = this.options.params || {};\n        let bodyAndContentType;\n        if (this.pubRequestBody !== undefined) {\n            if (this.options.contentType === undefined) {\n                throw new Error(\"Content type undefined.\");\n            }\n            bodyAndContentType = {\n                body: this.pubRequestBody,\n                contentType: this.options.contentType\n            };\n        }\n        let body;\n        if (bodyAndContentType) {\n            body = fromBodyLegacy(bodyAndContentType);\n        }\n        this.request = this.userAgent.userAgentCore.makeOutgoingRequestMessage(C.PUBLISH, ruri, params.fromUri ? params.fromUri : this.userAgent.userAgentCore.configuration.aor, params.toUri ? params.toUri : this.target, params, reqOptions.extraHeaders, body);\n        return this.send();\n    }\n    /**\n     * Transition publication state.\n     */\n    stateTransition(newState) {\n        const invalidTransition = () => {\n            throw new Error(`Invalid state transition from ${this._state} to ${newState}`);\n        };\n        // Validate transition\n        switch (this._state) {\n            case PublisherState.Initial:\n                if (newState !== PublisherState.Published &&\n                    newState !== PublisherState.Unpublished &&\n                    newState !== PublisherState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case PublisherState.Published:\n                if (newState !== PublisherState.Unpublished && newState !== PublisherState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case PublisherState.Unpublished:\n                if (newState !== PublisherState.Published && newState !== PublisherState.Terminated) {\n                    invalidTransition();\n                }\n                break;\n            case PublisherState.Terminated:\n                invalidTransition();\n                break;\n            default:\n                throw new Error(\"Unrecognized state.\");\n        }\n        // Transition\n        this._state = newState;\n        this.logger.log(`Publication transitioned to state ${this._state}`);\n        this._stateEventEmitter.emit(this._state);\n        // Dispose\n        if (newState === PublisherState.Terminated) {\n            this.dispose();\n        }\n    }\n}\n","/**\n * {@link Publisher} state.\n * @remarks\n * The {@link Publisher} behaves in a deterministic manner according to the following\n * Finite State Machine (FSM).\n * ```txt\n *                  __________________________________________\n *                 |  __________________________              |\n * Publisher       | |                          v             v\n * Constructed -> Initial -> Published -> Unpublished -> Terminated\n *                              |   ^____________|             ^\n *                              |______________________________|\n * ```\n * @public\n */\nexport var PublisherState;\n(function (PublisherState) {\n    PublisherState[\"Initial\"] = \"Initial\";\n    PublisherState[\"Published\"] = \"Published\";\n    PublisherState[\"Unpublished\"] = \"Unpublished\";\n    PublisherState[\"Terminated\"] = \"Terminated\";\n})(PublisherState = PublisherState || (PublisherState = {}));\n","import { EventEmitter } from 'events';\n\nimport type { UserAgentCore, IncomingRequestMessage } from 'sip.js/lib/core';\nimport { C } from 'sip.js/lib/core';\nimport { Events } from './events';\n\nimport type { WebPhoneUserAgent } from './userAgent';\n\nexport type WehPhoneUserAgentCore = UserAgentCore & {\n  _receiveIncomingRequestFromTransport?: typeof UserAgentCore.prototype.receiveIncomingRequestFromTransport;\n  addListener?: typeof EventEmitter.prototype.addListener;\n  emit?: typeof EventEmitter.prototype.emit;\n  off?: typeof EventEmitter.prototype.off;\n  on?: typeof EventEmitter.prototype.on;\n  removeListener?: typeof EventEmitter.prototype.removeListener;\n};\n\n/** @ignore */\nexport function patchUserAgentCore(userAgent: WebPhoneUserAgent) {\n  const userAgentCore: WehPhoneUserAgentCore = userAgent.userAgentCore;\n  const eventEmitter = new EventEmitter();\n  userAgentCore.on = eventEmitter.on.bind(eventEmitter);\n  userAgentCore.off = eventEmitter.off.bind(eventEmitter);\n  userAgentCore.addListener = eventEmitter.addListener.bind(eventEmitter);\n  userAgentCore.removeListener = eventEmitter.removeListener.bind(eventEmitter);\n  userAgentCore.emit = eventEmitter.emit.bind(eventEmitter);\n  userAgentCore._receiveIncomingRequestFromTransport = userAgentCore.receiveIncomingRequestFromTransport.bind(\n    userAgent.userAgentCore,\n  );\n  userAgentCore.receiveIncomingRequestFromTransport = receiveIncomingRequestFromTransport.bind(userAgent.userAgentCore);\n}\n\nfunction receiveIncomingRequestFromTransport(this: WehPhoneUserAgentCore, message: IncomingRequestMessage): void {\n  switch (message.method) {\n    case C.UPDATE: {\n      (this as any).logger.log('Receive UPDATE request. Do nothing just return 200 OK');\n      this.replyStateless(message, { statusCode: 200 });\n      this.emit!(Events.Session.UpdateReceived, message);\n      return;\n    }\n    case C.INFO: {\n      // For the Move2RCV request from server\n      const content = getIncomingInfoContent(message);\n      if (content?.request?.reqId && content?.request?.command === 'move' && content?.request?.target === 'rcv') {\n        this.replyStateless(message, { statusCode: 200 });\n        this.emit!(Events.Session.MoveToRcv, content.request);\n        return;\n      }\n      // For other SIP INFO from server\n      this.emit!('RC_SIP_INFO', message);\n      // SIP.js does not support application/json content type, so we monkey override its behavior in this case\n      const contentType = message.getHeader('content-type')!;\n      if (contentType.match(/^application\\/json/i)) {\n        this.replyStateless(message, { statusCode: 200 });\n        return;\n      }\n      break;\n    }\n  }\n  return (this as any)._receiveIncomingRequestFromTransport(message);\n}\n\nfunction getIncomingInfoContent(message: IncomingRequestMessage): any {\n  if (!message?.body) {\n    return {};\n  }\n  let ret = {};\n  try {\n    ret = JSON.parse(message.body);\n  } catch (e) {\n    return {};\n  }\n  return ret;\n}\n","import type {\n  BodyAndContentType,\n  Session,\n  SessionDescriptionHandler as SessionDescriptionHandlerDefinition,\n  SessionDescriptionHandlerModifier,\n} from 'sip.js';\nimport type { Logger } from 'sip.js/lib/core';\nimport type { MediaStreamFactory } from 'sip.js/lib/platform/web/session-description-handler/media-stream-factory';\nimport type { SessionDescriptionHandlerConfiguration } from 'sip.js/lib/platform/web/session-description-handler/session-description-handler-configuration';\nimport type { SessionDescriptionHandlerOptions } from 'sip.js/lib/platform/web/session-description-handler/session-description-handler-options';\nimport type { PeerConnectionDelegate } from 'sip.js/lib/platform/web/session-description-handler/peer-connection-delegate';\nimport type { SessionDescriptionHandlerFactoryOptions } from 'sip.js/lib/platform/web';\n\ntype ResolveFunction = () => void;\ntype RejectFunction = (reason: Error) => void;\n\n/**\n * Extension of SessionDescriptionHandlerConfiguration with additional options\n */\nexport interface WebPhoneSessionDescriptionHandlerConfiguration extends SessionDescriptionHandlerConfiguration {\n  /** Enable DSCP by setting packet priority in SDP */\n  enableDscp?: boolean;\n}\n\n/**\n * Extension of SessionDescriptionHandlerFactoryOptions with additional options\n */\nexport interface WebPhoneSessionDescriptionHandlerFactoryOptions extends SessionDescriptionHandlerFactoryOptions {\n  /** Enable DSCP by setting packet priority in SDP */\n  enableDscp?: boolean;\n}\n\n/**\n * A base class implementing a WebRTC session description handler for sip.js.\n * @remarks\n * It is expected/intended to be extended by specific WebRTC based applications.\n * @privateRemarks\n * So do not put application specific implementation in here.\n * @public\n */\nexport class SessionDescriptionHandler implements SessionDescriptionHandlerDefinition {\n  // The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).\n  // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n  private static dispatchAddTrackEvent(stream: MediaStream, track: MediaStreamTrack): void {\n    stream.dispatchEvent(new MediaStreamTrackEvent('addtrack', { track }));\n  }\n  // The removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).\n  // https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onremovetrack\n  private static dispatchRemoveTrackEvent(stream: MediaStream, track: MediaStreamTrack): void {\n    stream.dispatchEvent(new MediaStreamTrackEvent('removetrack', { track }));\n  }\n\n  /** Logger. */\n  protected logger: Logger;\n  /** Media stream factory. */\n  protected mediaStreamFactory: MediaStreamFactory;\n  /** Configuration options. */\n  protected sessionDescriptionHandlerConfiguration?: WebPhoneSessionDescriptionHandlerConfiguration;\n\n  /** The local media stream. */\n  protected _localMediaStream: MediaStream;\n  /** The remote media stream. */\n  protected _remoteMediaStream: MediaStream;\n  /** The data channel. Undefined before created. */\n  protected _dataChannel: RTCDataChannel | undefined;\n  /** The peer connection. Undefined after SessionDescriptionHandler.close(). */\n  protected _peerConnection: RTCPeerConnection | undefined;\n  /** The peer connection delegate. */\n  protected _peerConnectionDelegate: PeerConnectionDelegate | undefined;\n\n  private iceGatheringCompletePromise: Promise<void> | undefined;\n  private iceGatheringCompleteTimeoutId: ReturnType<typeof setTimeout> | undefined;\n  private iceGatheringCompleteResolve: ResolveFunction | undefined;\n  private iceGatheringCompleteReject: RejectFunction | undefined;\n  private localMediaStreamConstraints: MediaStreamConstraints | undefined;\n  private onDataChannel: ((dataChannel: RTCDataChannel) => void) | undefined;\n\n  /**\n   * Constructor\n   * @param logger - A logger\n   * @param mediaStreamFactory - A factory to provide a MediaStream\n   * @param options - Options passed from the SessionDescriptionHandleFactory\n   */\n  public constructor(\n    logger: Logger,\n    mediaStreamFactory: MediaStreamFactory,\n    sessionDescriptionHandlerConfiguration?: WebPhoneSessionDescriptionHandlerConfiguration,\n  ) {\n    logger.debug('SessionDescriptionHandler.constructor');\n    this.logger = logger;\n    this.mediaStreamFactory = mediaStreamFactory;\n    this.sessionDescriptionHandlerConfiguration = sessionDescriptionHandlerConfiguration;\n    this._localMediaStream = new MediaStream();\n    this._remoteMediaStream = new MediaStream();\n    this._peerConnection = new RTCPeerConnection(sessionDescriptionHandlerConfiguration?.peerConnectionConfiguration);\n    this.initPeerConnectionEventHandlers();\n  }\n\n  /**\n   * The local media stream currently being sent.\n   *\n   * @remarks\n   * The local media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * local media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */\n  public get localMediaStream(): MediaStream {\n    return this._localMediaStream;\n  }\n\n  /**\n   * The remote media stream currently being received.\n   *\n   * @remarks\n   * The remote media stream initially has no tracks, so the presence of tracks\n   * should not be assumed. Furthermore, tracks may be added or removed if the\n   * remote media changes - for example, on upgrade from audio only to a video session.\n   * At any given time there will be at most one audio track and one video track\n   * (it's possible that this restriction may not apply to sub-classes).\n   * Use `MediaStream.onaddtrack` or add a listener for the `addtrack` event\n   * to detect when a new track becomes available:\n   * https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/onaddtrack\n   */\n  public get remoteMediaStream(): MediaStream {\n    return this._remoteMediaStream;\n  }\n\n  /**\n   * The data channel. Undefined before it is created.\n   */\n  public get dataChannel(): RTCDataChannel | undefined {\n    return this._dataChannel;\n  }\n\n  /**\n   * The peer connection. Undefined if peer connection has closed.\n   *\n   * @remarks\n   * While access to the underlying `RTCPeerConnection` is provided, note that\n   * using methods with modify it may break the operation of this class.\n   * In particular, this class depends on exclusive access to the\n   * event handler properties. If you need access to the peer connection\n   * events, either register for events using `addEventListener()` on\n   * the `RTCPeerConnection` or set the `peerConnectionDelegate` on\n   * this `SessionDescriptionHandler`.\n   */\n  public get peerConnection(): RTCPeerConnection | undefined {\n    return this._peerConnection;\n  }\n\n  /**\n   * A delegate which provides access to the peer connection event handlers.\n   *\n   * @remarks\n   * Setting the peer connection event handlers directly is not supported\n   * and may break this class. As this class depends on exclusive access\n   * to them, a delegate may be set which provides alternative access to\n   * the event handlers in a fashion which is supported.\n   */\n  public get peerConnectionDelegate(): PeerConnectionDelegate | undefined {\n    return this._peerConnectionDelegate;\n  }\n\n  public set peerConnectionDelegate(delegate: PeerConnectionDelegate | undefined) {\n    this._peerConnectionDelegate = delegate;\n  }\n\n  /**\n   * Stop tracks and close peer connection.\n   */\n  public close(): void {\n    this.logger.debug('SessionDescriptionHandler.close');\n    if (this._peerConnection === undefined) {\n      return;\n    }\n    this._peerConnection.getReceivers().forEach((receiver) => {\n      receiver.track?.stop();\n    });\n    this._peerConnection.getSenders().forEach((sender) => {\n      sender.track?.stop();\n    });\n    if (this._dataChannel) {\n      this._dataChannel.close();\n    }\n    this._peerConnection.close();\n    this._peerConnection = undefined;\n  }\n\n  /**\n   * Creates an offer or answer.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */\n  public getDescription(\n    options?: SessionDescriptionHandlerOptions,\n    modifiers?: Array<SessionDescriptionHandlerModifier>,\n  ): Promise<BodyAndContentType> {\n    this.logger.debug('SessionDescriptionHandler.getDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    // Callback on data channel creation\n    this.onDataChannel = options?.onDataChannel;\n\n    // ICE will restart upon applying an offer created with the iceRestart option\n    const iceRestart = options?.offerOptions?.iceRestart;\n\n    // ICE gathering timeout may be set on a per call basis, otherwise the configured default is used\n    const iceTimeout =\n      options?.iceGatheringTimeout === undefined\n        ? this.sessionDescriptionHandlerConfiguration?.iceGatheringTimeout\n        : options?.iceGatheringTimeout;\n\n    return this.getLocalMediaStream(options)\n      .then(() => this.enableSenderDscp())\n      .then(() => this.updateDirection(options))\n      .then(() => this.createDataChannel(options))\n      .then(() => this.createLocalOfferOrAnswer(options))\n      .then((sessionDescription) => this.applyModifiers(sessionDescription, modifiers))\n      .then((sessionDescription) => this.setLocalSessionDescription(sessionDescription))\n      .then(() => this.waitForIceGatheringComplete(iceRestart, iceTimeout))\n      .then(() => this.getLocalSessionDescription())\n      .then((sessionDescription) => {\n        return {\n          body: sessionDescription.sdp,\n          contentType: 'application/sdp',\n        };\n      })\n      .catch((error) => {\n        this.logger.error('SessionDescriptionHandler.getDescription failed - ' + error);\n        throw error;\n      });\n  }\n\n  /**\n   * Returns true if the SessionDescriptionHandler can handle the Content-Type described by a SIP message.\n   * @param contentType - The content type that is in the SIP Message.\n   */\n  public hasDescription(contentType: string): boolean {\n    this.logger.debug('SessionDescriptionHandler.hasDescription');\n    return contentType === 'application/sdp';\n  }\n\n  /**\n   * Send DTMF via RTP (RFC 4733).\n   * Returns true if DTMF send is successful, false otherwise.\n   * @param tones - A string containing DTMF digits.\n   * @param options - Options object to be used by sendDtmf.\n   */\n  public sendDtmf(tones: string, options?: { duration: number; interToneGap: number }): boolean {\n    this.logger.debug('SessionDescriptionHandler.sendDtmf');\n    if (this._peerConnection === undefined) {\n      this.logger.error('SessionDescriptionHandler.sendDtmf failed - peer connection closed');\n      return false;\n    }\n    const senders = this._peerConnection.getSenders();\n    if (senders.length === 0) {\n      this.logger.error('SessionDescriptionHandler.sendDtmf failed - no senders');\n      return false;\n    }\n    const dtmfSender = senders[0].dtmf;\n    if (!dtmfSender) {\n      this.logger.error('SessionDescriptionHandler.sendDtmf failed - no DTMF sender');\n      return false;\n    }\n    const duration = options?.duration;\n    const interToneGap = options?.interToneGap;\n    try {\n      dtmfSender.insertDTMF(tones, duration, interToneGap);\n    } catch (e) {\n      this.logger.error(e as any);\n      return false;\n    }\n    this.logger.log('SessionDescriptionHandler.sendDtmf sent via RTP: ' + tones.toString());\n    return true;\n  }\n\n  /**\n   * Sets an offer or answer.\n   * @param sdp - The session description.\n   * @param options - Options bucket.\n   * @param modifiers - Modifiers.\n   */\n  public setDescription(\n    sdp: string,\n    options?: SessionDescriptionHandlerOptions,\n    modifiers?: Array<SessionDescriptionHandlerModifier>,\n  ): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n\n    // Callback on data channel creation\n    this.onDataChannel = options?.onDataChannel;\n\n    // SDP type\n    const type = this._peerConnection.signalingState === 'have-local-offer' ? 'answer' : 'offer';\n\n    return this.getLocalMediaStream(options)\n      .then(() => this.applyModifiers({ sdp, type }, modifiers))\n      .then((sessionDescription) => this.setRemoteSessionDescription(sessionDescription))\n      .catch((error) => {\n        this.logger.error('SessionDescriptionHandler.setDescription failed - ' + error);\n        throw error;\n      });\n  }\n\n  /**\n   * Applies modifiers to SDP prior to setting the local or remote description.\n   * @param sdp - SDP to modify.\n   * @param modifiers - Modifiers to apply.\n   */\n  protected applyModifiers(\n    sdp: RTCSessionDescriptionInit,\n    modifiers?: Array<SessionDescriptionHandlerModifier>,\n  ): Promise<RTCSessionDescriptionInit> {\n    this.logger.debug('SessionDescriptionHandler.applyModifiers');\n    if (!modifiers || modifiers.length === 0) {\n      return Promise.resolve(sdp);\n    }\n    return modifiers\n      .reduce((cur, next) => cur.then(next), Promise.resolve(sdp))\n      .then((modified) => {\n        this.logger.debug('SessionDescriptionHandler.applyModifiers - modified sdp');\n        if (!modified.sdp || !modified.type) {\n          throw new Error('Invalid SDP.');\n        }\n        return { sdp: modified.sdp, type: modified.type };\n      });\n  }\n\n  /**\n   * Create a data channel.\n   * @remarks\n   * Only creates a data channel if SessionDescriptionHandlerOptions.dataChannel is true.\n   * Only creates a data channel if creating a local offer.\n   * Only if one does not already exist.\n   * @param options - Session description handler options.\n   */\n  protected createDataChannel(options?: SessionDescriptionHandlerOptions): Promise<void> {\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    // only create a data channel if requested\n    if (options?.dataChannel !== true) {\n      return Promise.resolve();\n    }\n    // do not create a data channel if we already have one\n    if (this._dataChannel) {\n      return Promise.resolve();\n    }\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable, assume we are creating a local offer so create a data channel\n        this.logger.debug('SessionDescriptionHandler.createDataChannel - creating data channel');\n        try {\n          this._dataChannel = this._peerConnection.createDataChannel(\n            options?.dataChannelLabel || '',\n            options?.dataChannelOptions,\n          );\n          if (this.onDataChannel) {\n            this.onDataChannel(this._dataChannel);\n          }\n          return Promise.resolve();\n        } catch (error) {\n          return Promise.reject(error);\n        }\n      case 'have-remote-offer':\n        return Promise.resolve();\n      case 'have-local-offer':\n      case 'have-local-pranswer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n  }\n\n  /**\n   * Depending on current signaling state, create a local offer or answer.\n   * @param options - Session description handler options.\n   */\n  protected createLocalOfferOrAnswer(options?: SessionDescriptionHandlerOptions): Promise<RTCSessionDescriptionInit> {\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable, assume we are creating a local offer\n        this.logger.debug('SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP offer');\n        return this._peerConnection.createOffer(options?.offerOptions);\n      case 'have-remote-offer':\n        // if we have a remote offer, assume we are creating a local answer\n        this.logger.debug('SessionDescriptionHandler.createLocalOfferOrAnswer - creating SDP answer');\n        return this._peerConnection.createAnswer(options?.answerOptions);\n      case 'have-local-offer':\n      case 'have-local-pranswer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n  }\n\n  /**\n   * Get a media stream from the media stream factory and set the local media stream.\n   * @param options - Session description handler options.\n   */\n  protected getLocalMediaStream(options?: SessionDescriptionHandlerOptions): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.getLocalMediaStream');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    let constraints: MediaStreamConstraints = { ...options?.constraints };\n\n    // if we already have a local media stream...\n    if (this.localMediaStreamConstraints) {\n      // ignore constraint \"downgrades\"\n      constraints.audio = constraints.audio || this.localMediaStreamConstraints.audio;\n      constraints.video = constraints.video || this.localMediaStreamConstraints.video;\n\n      // if constraints have not changed, do not get a new media stream\n      if (\n        JSON.stringify(this.localMediaStreamConstraints.audio) === JSON.stringify(constraints.audio) &&\n        JSON.stringify(this.localMediaStreamConstraints.video) === JSON.stringify(constraints.video)\n      ) {\n        return Promise.resolve();\n      }\n    } else {\n      // if no constraints have been specified, default to audio for initial media stream\n      if (constraints.audio === undefined && constraints.video === undefined) {\n        constraints = { audio: true };\n      }\n    }\n\n    this.localMediaStreamConstraints = constraints;\n    return this.mediaStreamFactory(constraints, this as any).then((mediaStream) =>\n      this.setLocalMediaStream(mediaStream),\n    );\n  }\n\n  /**\n   * Sets the encoding priorty to high for sender track.\n   *\n   */\n  protected async enableSenderDscp() {\n    if (!this.sessionDescriptionHandlerConfiguration?.enableDscp) {\n      return;\n    }\n    if (!this._peerConnection) {\n      throw new Error('Peer connection undefined.');\n    }\n    for (const sender of this._peerConnection.getSenders().filter((sender) => sender.track)) {\n      const parameters = sender.getParameters();\n      // console.info('getsender params =', parameters);\n      (parameters as any).priority = 'high';\n      try {\n        await sender.setParameters(parameters);\n      } catch (error) {\n        console.error(\n          `Error while setting encodings parameters for ${sender.track!.kind} Track ${sender.track!.id}: ${\n            error.message || error.name\n          }`,\n        );\n      }\n    }\n  }\n\n  /**\n   * Sets the peer connection's sender tracks and local media stream tracks.\n   *\n   * @remarks\n   * Only the first audio and video tracks of the provided MediaStream are utilized.\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param stream - Media stream containing tracks to be utilized.\n   */\n  protected setLocalMediaStream(stream: MediaStream): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setLocalMediaStream');\n\n    if (!this._peerConnection) {\n      throw new Error('Peer connection undefined.');\n    }\n    const pc = this._peerConnection;\n\n    const localStream = this._localMediaStream;\n\n    const trackUpdates: Array<Promise<void>> = [];\n\n    const updateTrack = (newTrack: MediaStreamTrack): void => {\n      const kind = newTrack.kind;\n      if (kind !== 'audio' && kind !== 'video') {\n        throw new Error(`Unknown new track kind ${kind}.`);\n      }\n      const sender = pc.getSenders().find((sender) => sender.track && sender.track.kind === kind);\n      if (sender) {\n        trackUpdates.push(\n          new Promise<void>((resolve) => {\n            this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - replacing sender ${kind} track`);\n            resolve();\n          }).then(() =>\n            sender\n              .replaceTrack(newTrack)\n              .then(() => {\n                const oldTrack = localStream.getTracks().find((localTrack) => localTrack.kind === kind);\n                if (oldTrack) {\n                  oldTrack.stop();\n                  localStream.removeTrack(oldTrack);\n                  SessionDescriptionHandler.dispatchRemoveTrackEvent(localStream, oldTrack);\n                }\n                localStream.addTrack(newTrack);\n                SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n              })\n              .catch((error: Error) => {\n                this.logger.error(\n                  `SessionDescriptionHandler.setLocalMediaStream - failed to replace sender ${kind} track`,\n                );\n                throw error;\n              }),\n          ),\n        );\n      } else {\n        trackUpdates.push(\n          new Promise<void>((resolve) => {\n            this.logger.debug(`SessionDescriptionHandler.setLocalMediaStream - adding sender ${kind} track`);\n            resolve();\n          }).then(() => {\n            // Review: could make streamless tracks a configurable option?\n            // https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack#Usage_notes\n            try {\n              pc.addTrack(newTrack, localStream);\n            } catch (error) {\n              this.logger.error(`SessionDescriptionHandler.setLocalMediaStream - failed to add sender ${kind} track`);\n              throw error;\n            }\n            localStream.addTrack(newTrack);\n            SessionDescriptionHandler.dispatchAddTrackEvent(localStream, newTrack);\n          }),\n        );\n      }\n    };\n\n    // update peer connection audio tracks\n    const audioTracks = stream.getAudioTracks();\n    if (audioTracks.length) {\n      updateTrack(audioTracks[0]);\n    }\n\n    // update peer connection video tracks\n    const videoTracks = stream.getVideoTracks();\n    if (videoTracks.length) {\n      updateTrack(videoTracks[0]);\n    }\n\n    return trackUpdates.reduce((p, x) => p.then(() => x), Promise.resolve());\n  }\n\n  /**\n   * Gets the peer connection's local session description.\n   */\n  protected getLocalSessionDescription(): Promise<RTCSessionDescription> {\n    this.logger.debug('SessionDescriptionHandler.getLocalSessionDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    const sdp = this._peerConnection.localDescription;\n    if (!sdp) {\n      return Promise.reject(new Error('Failed to get local session description'));\n    }\n    return Promise.resolve(sdp);\n  }\n\n  /**\n   * Sets the peer connection's local session description.\n   * @param sessionDescription - sessionDescription The session description.\n   */\n  protected setLocalSessionDescription(sessionDescription: RTCSessionDescriptionInit): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setLocalSessionDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    return this._peerConnection.setLocalDescription(sessionDescription);\n  }\n\n  /**\n   * Sets the peer connection's remote session description.\n   * @param sessionDescription - The session description.\n   */\n  protected setRemoteSessionDescription(sessionDescription: RTCSessionDescriptionInit): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.setRemoteSessionDescription');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    const sdp = sessionDescription.sdp;\n    let type: RTCSdpType;\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable assume this is a remote offer\n        type = 'offer';\n        break;\n      case 'have-local-offer':\n        // if we made an offer, assume this is a remote answer\n        type = 'answer';\n        break;\n      case 'have-local-pranswer':\n      case 'have-remote-offer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n    if (!sdp) {\n      this.logger.error('SessionDescriptionHandler.setRemoteSessionDescription failed - cannot set null sdp');\n      return Promise.reject(new Error('SDP is undefined'));\n    }\n    return this._peerConnection.setRemoteDescription({ sdp, type });\n  }\n\n  /**\n   * Sets a remote media stream track.\n   *\n   * @remarks\n   * Adds tracks if audio and/or video tracks are not already present, otherwise replaces tracks.\n   *\n   * @param track - Media stream track to be utilized.\n   */\n  protected setRemoteTrack(track: MediaStreamTrack): void {\n    this.logger.debug('SessionDescriptionHandler.setRemoteTrack');\n\n    const remoteStream = this._remoteMediaStream;\n\n    if (remoteStream.getTrackById(track.id)) {\n      this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - have remote ${track.kind} track`);\n    } else if (track.kind === 'audio') {\n      this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n      remoteStream.getAudioTracks().forEach((track) => {\n        track.stop();\n        remoteStream.removeTrack(track);\n        SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n      });\n      remoteStream.addTrack(track);\n      SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n    } else if (track.kind === 'video') {\n      this.logger.debug(`SessionDescriptionHandler.setRemoteTrack - adding remote ${track.kind} track`);\n      remoteStream.getVideoTracks().forEach((track) => {\n        track.stop();\n        remoteStream.removeTrack(track);\n        SessionDescriptionHandler.dispatchRemoveTrackEvent(remoteStream, track);\n      });\n      remoteStream.addTrack(track);\n      SessionDescriptionHandler.dispatchAddTrackEvent(remoteStream, track);\n    }\n  }\n\n  /**\n   * Depending on the current signaling state and the session hold state, update transceiver direction.\n   * @param options - Session description handler options.\n   */\n  protected updateDirection(options?: SessionDescriptionHandlerOptions): Promise<void> {\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n\n    // 4.2.3.  setDirection\n    //\n    //    The setDirection method sets the direction of a transceiver, which\n    //    affects the direction property of the associated \"m=\" section on\n    //    future calls to createOffer and createAnswer.  The permitted values\n    //    for direction are \"recvonly\", \"sendrecv\", \"sendonly\", and \"inactive\",\n    //    mirroring the identically named direction attributes defined in\n    //    [RFC4566], Section 6.\n    //\n    //    When creating offers, the transceiver direction is directly reflected\n    //    in the output, even for re-offers.  When creating answers, the\n    //    transceiver direction is intersected with the offered direction, as\n    //    explained in Section 5.3 below.\n    //\n    //    Note that while setDirection sets the direction property of the\n    //    transceiver immediately (Section 4.2.4), this property does not\n    //    immediately affect whether the transceiver's RtpSender will send or\n    //    its RtpReceiver will receive.  The direction in effect is represented\n    //    by the currentDirection property, which is only updated when an\n    //    answer is applied.\n    //\n    // 4.2.4.  direction\n    //\n    //    The direction property indicates the last value passed into\n    //    setDirection.  If setDirection has never been called, it is set to\n    //    the direction the transceiver was initialized with.\n    //\n    // 4.2.5.  currentDirection\n    //\n    //    The currentDirection property indicates the last negotiated direction\n    //    for the transceiver's associated \"m=\" section.  More specifically, it\n    //    indicates the direction attribute [RFC3264] of the associated \"m=\"\n    //    section in the last applied answer (including provisional answers),\n    //    with \"send\" and \"recv\" directions reversed if it was a remote answer.\n    //    For example, if the direction attribute for the associated \"m=\"\n    //    section in a remote answer is \"recvonly\", currentDirection is set to\n    //    \"sendonly\".\n    //\n    //    If an answer that references this transceiver has not yet been\n    //    applied or if the transceiver is stopped, currentDirection is set to\n    //    \"null\".\n    //  https://tools.ietf.org/html/rfc8829#section-4.2.3\n    //\n    // *  A direction attribute, determined by applying the rules regarding\n    //    the offered direction specified in [RFC3264], Section 6.1, and\n    //    then intersecting with the direction of the associated\n    //    RtpTransceiver.  For example, in the case where an \"m=\" section is\n    //    offered as \"sendonly\" and the local transceiver is set to\n    //    \"sendrecv\", the result in the answer is a \"recvonly\" direction.\n    // https://tools.ietf.org/html/rfc8829#section-5.3.1\n    //\n    // If a stream is offered as sendonly, the corresponding stream MUST be\n    // marked as recvonly or inactive in the answer.  If a media stream is\n    // listed as recvonly in the offer, the answer MUST be marked as\n    // sendonly or inactive in the answer.  If an offered media stream is\n    // listed as sendrecv (or if there is no direction attribute at the\n    // media or session level, in which case the stream is sendrecv by\n    // default), the corresponding stream in the answer MAY be marked as\n    // sendonly, recvonly, sendrecv, or inactive.  If an offered media\n    // stream is listed as inactive, it MUST be marked as inactive in the\n    // answer.\n    // https://tools.ietf.org/html/rfc3264#section-6.1\n\n    switch (this._peerConnection.signalingState) {\n      case 'stable':\n        // if we are stable, assume we are creating a local offer\n        this.logger.debug('SessionDescriptionHandler.updateDirection - setting offer direction');\n        {\n          // determine the direction to offer given the current direction and hold state\n          const directionToOffer = (currentDirection: RTCRtpTransceiverDirection): RTCRtpTransceiverDirection => {\n            switch (currentDirection) {\n              case 'inactive':\n                return options?.hold ? 'inactive' : 'recvonly';\n              case 'recvonly':\n                return options?.hold ? 'inactive' : 'recvonly';\n              case 'sendonly':\n                return options?.hold ? 'sendonly' : 'sendrecv';\n              case 'sendrecv':\n                return options?.hold ? 'sendonly' : 'sendrecv';\n              case 'stopped':\n                return 'stopped';\n              default:\n                throw new Error('Should never happen');\n            }\n          };\n          // set the transceiver direction to the offer direction\n          this._peerConnection.getTransceivers().forEach((transceiver) => {\n            if (transceiver.direction /* guarding, but should always be true */) {\n              const offerDirection = directionToOffer(transceiver.direction);\n              if (transceiver.direction !== offerDirection) {\n                transceiver.direction = offerDirection;\n              }\n            }\n          });\n        }\n        break;\n      case 'have-remote-offer':\n        // if we have a remote offer, assume we are creating a local answer\n        this.logger.debug('SessionDescriptionHandler.updateDirection - setting answer direction');\n\n        // FIXME: This is not the correct way to determine the answer direction as it is only\n        // considering first match in the offered SDP and using that to determine the answer direction.\n        // While that may be fine for our current use cases, it is not a generally correct approach.\n        {\n          // determine the offered direction\n          const offeredDirection = ((): 'inactive' | 'recvonly' | 'sendonly' | 'sendrecv' => {\n            const description = this._peerConnection.remoteDescription;\n            if (!description) {\n              throw new Error('Failed to read remote offer');\n            }\n            const searchResult = /a=sendrecv\\r\\n|a=sendonly\\r\\n|a=recvonly\\r\\n|a=inactive\\r\\n/.exec(description.sdp);\n            if (searchResult) {\n              switch (searchResult[0]) {\n                case 'a=inactive\\r\\n':\n                  return 'inactive';\n                case 'a=recvonly\\r\\n':\n                  return 'recvonly';\n                case 'a=sendonly\\r\\n':\n                  return 'sendonly';\n                case 'a=sendrecv\\r\\n':\n                  return 'sendrecv';\n                default:\n                  throw new Error('Should never happen');\n              }\n            }\n            return 'sendrecv';\n          })();\n\n          // determine the answer direction based on the offered direction and our hold state\n          const answerDirection = ((): 'inactive' | 'recvonly' | 'sendonly' | 'sendrecv' => {\n            switch (offeredDirection) {\n              case 'inactive':\n                return 'inactive';\n              case 'recvonly':\n                return 'sendonly';\n              case 'sendonly':\n                return options?.hold ? 'inactive' : 'recvonly';\n              case 'sendrecv':\n                return options?.hold ? 'sendonly' : 'sendrecv';\n              default:\n                throw new Error('Should never happen');\n            }\n          })();\n\n          // set the transceiver direction to the answer direction\n          this._peerConnection.getTransceivers().forEach((transceiver) => {\n            if (transceiver.direction /* guarding, but should always be true */) {\n              if (transceiver.direction !== 'stopped' && transceiver.direction !== answerDirection) {\n                transceiver.direction = answerDirection;\n              }\n            }\n          });\n        }\n        break;\n      case 'have-local-offer':\n      case 'have-local-pranswer':\n      case 'have-remote-pranswer':\n      case 'closed':\n      default:\n        return Promise.reject(new Error('Invalid signaling state ' + this._peerConnection.signalingState));\n    }\n    return Promise.resolve();\n  }\n\n  /**\n   * Called when ICE gathering completes and resolves any waiting promise.\n   */\n  protected iceGatheringComplete(): void {\n    this.logger.debug('SessionDescriptionHandler.iceGatheringComplete');\n    // clear timer if need be\n    if (this.iceGatheringCompleteTimeoutId !== undefined) {\n      this.logger.debug('SessionDescriptionHandler.iceGatheringComplete - clearing timeout');\n      clearTimeout(this.iceGatheringCompleteTimeoutId);\n      this.iceGatheringCompleteTimeoutId = undefined;\n    }\n    // resolve and cleanup promise if need be\n    if (this.iceGatheringCompletePromise !== undefined) {\n      this.logger.debug('SessionDescriptionHandler.iceGatheringComplete - resolving promise');\n      this.iceGatheringCompleteResolve?.();\n      this.iceGatheringCompletePromise = undefined;\n      this.iceGatheringCompleteResolve = undefined;\n      this.iceGatheringCompleteReject = undefined;\n    }\n  }\n\n  /**\n   * Wait for ICE gathering to complete.\n   * @param restart - If true, waits if current state is \"complete\" (waits for transition to \"complete\").\n   * @param timeout - Milliseconds after which waiting times out. No timeout if 0.\n   */\n  protected waitForIceGatheringComplete(restart = false, timeout = 0): Promise<void> {\n    this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete');\n    if (this._peerConnection === undefined) {\n      return Promise.reject(new Error('Peer connection closed.'));\n    }\n    // guard already complete\n    if (!restart && this._peerConnection.iceGatheringState === 'complete') {\n      this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - already complete');\n      return Promise.resolve();\n    }\n    // only one may be waiting, reject any prior\n    if (this.iceGatheringCompletePromise !== undefined) {\n      this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - rejecting prior waiting promise');\n      this.iceGatheringCompleteReject?.(new Error('Promise superseded.'));\n      this.iceGatheringCompletePromise = undefined;\n      this.iceGatheringCompleteResolve = undefined;\n      this.iceGatheringCompleteReject = undefined;\n    }\n    this.iceGatheringCompletePromise = new Promise<void>((resolve, reject) => {\n      this.iceGatheringCompleteResolve = resolve;\n      this.iceGatheringCompleteReject = reject;\n      if (timeout > 0) {\n        this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - timeout in ' + timeout);\n        this.iceGatheringCompleteTimeoutId = setTimeout(() => {\n          this.logger.debug('SessionDescriptionHandler.waitForIceGatheringToComplete - timeout');\n          this.iceGatheringComplete();\n        }, timeout);\n      }\n    });\n    return this.iceGatheringCompletePromise;\n  }\n\n  /**\n   * Initializes the peer connection event handlers\n   */\n  private initPeerConnectionEventHandlers(): void {\n    this.logger.debug('SessionDescriptionHandler.initPeerConnectionEventHandlers');\n\n    if (!this._peerConnection) {\n      throw new Error('Peer connection undefined.');\n    }\n    const peerConnection = this._peerConnection;\n\n    peerConnection.onconnectionstatechange = (event): void => {\n      const newState = peerConnection.connectionState;\n      this.logger.debug(`SessionDescriptionHandler.onconnectionstatechange ${newState}`);\n      if (this._peerConnectionDelegate?.onconnectionstatechange) {\n        this._peerConnectionDelegate.onconnectionstatechange(event);\n      }\n    };\n\n    peerConnection.ondatachannel = (event): void => {\n      this.logger.debug('SessionDescriptionHandler.ondatachannel');\n      this._dataChannel = event.channel;\n      if (this.onDataChannel) {\n        this.onDataChannel(this._dataChannel);\n      }\n      if (this._peerConnectionDelegate?.ondatachannel) {\n        this._peerConnectionDelegate.ondatachannel(event);\n      }\n    };\n\n    peerConnection.onicecandidate = (event): void => {\n      this.logger.debug('SessionDescriptionHandler.onicecandidate');\n      if (this._peerConnectionDelegate?.onicecandidate) {\n        this._peerConnectionDelegate.onicecandidate(event);\n      }\n    };\n\n    peerConnection.onicecandidateerror = ((event: RTCPeerConnectionIceErrorEvent): void => {\n      this.logger.debug('SessionDescriptionHandler.onicecandidateerror');\n      if (this._peerConnectionDelegate?.onicecandidateerror) {\n        this._peerConnectionDelegate.onicecandidateerror(event);\n      }\n    }) as (this: RTCPeerConnection, ev: Event) => any;\n\n    peerConnection.oniceconnectionstatechange = (event): void => {\n      const newState = peerConnection.iceConnectionState;\n      this.logger.debug(`SessionDescriptionHandler.oniceconnectionstatechange ${newState}`);\n      if (this._peerConnectionDelegate?.oniceconnectionstatechange) {\n        this._peerConnectionDelegate.oniceconnectionstatechange(event);\n      }\n    };\n\n    peerConnection.onicegatheringstatechange = (event): void => {\n      const newState = peerConnection.iceGatheringState;\n      this.logger.debug(`SessionDescriptionHandler.onicegatheringstatechange ${newState}`);\n      if (newState === 'complete') {\n        this.iceGatheringComplete(); // complete waiting for ICE gathering to complete\n      }\n      if (this._peerConnectionDelegate?.onicegatheringstatechange) {\n        this._peerConnectionDelegate.onicegatheringstatechange(event);\n      }\n    };\n\n    peerConnection.onnegotiationneeded = (event): void => {\n      this.logger.debug('SessionDescriptionHandler.onnegotiationneeded');\n      if (this._peerConnectionDelegate?.onnegotiationneeded) {\n        this._peerConnectionDelegate.onnegotiationneeded(event);\n      }\n    };\n\n    peerConnection.onsignalingstatechange = (event): void => {\n      const newState = peerConnection.signalingState;\n      this.logger.debug(`SessionDescriptionHandler.onsignalingstatechange ${newState}`);\n      if (this._peerConnectionDelegate?.onsignalingstatechange) {\n        this._peerConnectionDelegate.onsignalingstatechange(event);\n      }\n    };\n\n    // onstatsended is no longer a part of PeerConnection as per the specs so removing it\n\n    // peerConnection.onstatsended = (event): void => {\n    //     this.logger.debug(`SessionDescriptionHandler.onstatsended`);\n    //     if (this._peerConnectionDelegate?.onstatsended) {\n    //         this._peerConnectionDelegate.onstatsended(event);\n    //     }\n    // };\n\n    peerConnection.ontrack = (event): void => {\n      const kind = event.track.kind;\n      const enabled = event.track.enabled ? 'enabled' : 'disabled';\n      this.logger.debug(`SessionDescriptionHandler.ontrack ${kind} ${enabled}`);\n      this.setRemoteTrack(event.track);\n      if (this._peerConnectionDelegate?.ontrack) {\n        this._peerConnectionDelegate.ontrack(event);\n      }\n    };\n  }\n}\n\nexport function defaultPeerConnectionConfiguration(): RTCConfiguration {\n  const config: RTCConfiguration = {\n    bundlePolicy: 'balanced', // Note: max-bundle is not supported by the demo backend currently (5/15/17)\n    certificates: undefined,\n    iceCandidatePoolSize: 0,\n    iceServers: [{ urls: 'stun:stun.l.google.com:19302' }], // TURN URL example: \"turn:88.88.88.0:3478\", \"test\", \"test\"\n    iceTransportPolicy: 'all',\n    rtcpMuxPolicy: 'require',\n  };\n  return config;\n}\n\nexport function defaultMediaStreamFactory(): MediaStreamFactory {\n  return (constraints: MediaStreamConstraints): Promise<MediaStream> => {\n    // if no audio or video, return a media stream without tracks\n    if (!constraints.audio && !constraints.video) {\n      return Promise.resolve(new MediaStream());\n    }\n    // getUserMedia() is a powerful feature which can only be used in secure contexts; in insecure contexts,\n    // navigator.mediaDevices is undefined, preventing access to getUserMedia(). A secure context is, in short,\n    // a page loaded using HTTPS or the file:/// URL scheme, or a page loaded from localhost.\n    // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia#Privacy_and_security\n    if (navigator.mediaDevices === undefined) {\n      return Promise.reject(new Error('Media devices not available in insecure contexts.'));\n    }\n    return navigator.mediaDevices.getUserMedia(constraints);\n  };\n}\n\nexport const defaultSessionDescriptionFactory = (\n  session: Session,\n  options?: WebPhoneSessionDescriptionHandlerFactoryOptions,\n) => {\n  const mediaStreamFactory = defaultMediaStreamFactory();\n\n  // make sure we allow `0` to be passed in so timeout can be disabled\n  const iceGatheringTimeout = options?.iceGatheringTimeout !== undefined ? options?.iceGatheringTimeout : 5000;\n\n  // merge passed factory options into default session description configuration\n  const sessionDescriptionHandlerConfiguration: WebPhoneSessionDescriptionHandlerConfiguration = {\n    iceGatheringTimeout,\n    enableDscp: options!.enableDscp,\n    peerConnectionConfiguration: {\n      ...defaultPeerConnectionConfiguration(),\n      ...options?.peerConnectionConfiguration,\n    },\n  };\n\n  const logger = session.userAgent.getLogger('sip.SessionDescriptionHandler');\n\n  return new SessionDescriptionHandler(logger, mediaStreamFactory, sessionDescriptionHandlerConfiguration);\n};\n","{\n  \"name\": \"ringcentral-web-phone\",\n  \"version\": \"1.0.3\",\n  \"homepage\": \"https://github.com/ringcentral/ringcentral-web-phone\",\n  \"bugs\": {\n    \"url\": \"https://github.com/ringcentral/ringcentral-web-phone/issues\"\n  },\n  \"repository\": {\n    \"type\": \"git\",\n    \"url\": \"git://github.com/ringcentral/ringcentral-web-phone.git\"\n  },\n  \"license\": \"MIT\",\n  \"author\": {\n    \"name\": \"RingCentral, Inc.\",\n    \"email\": \"devsupport@ringcentral.com\"\n  },\n  \"contributors\": [\n    {\n      \"name\": \"Kirill Konshin\"\n    },\n    {\n      \"name\": \"Elias Sun\"\n    },\n    {\n      \"name\": \"Vyshakh Babji\"\n    },\n    {\n      \"name\": \"Yatin Gera\"\n    },\n    {\n      \"name\": \"Tyler Liu\"\n    },\n    {\n      \"name\": \"Embbnux Ji\"\n    }\n  ],\n  \"main\": \"./lib/src/index.js\",\n  \"types\": \"./lib/src/index.d.ts\",\n  \"scripts\": {\n    \"build\": \"rm -rf lib && yarn tsc && rm -rf docs && parcel build demo/index.html demo/callback.html --dist-dir docs --public-url ./\",\n    \"lint\": \"eslint --fix '**/*.{ts,tsx,js,jsx}' && prettier --write . && sort-package-json\",\n    \"serve\": \"rm -rf .parcel-cache && parcel demo/index.html demo/callback.html --dist-dir docs\",\n    \"test\": \"jest src/mediaStreams.spec.ts\",\n    \"test2\": \"NODE_OPTIONS=--require=dotenv-override-true/config playwright test test/index.spec.ts --workers=1\",\n    \"test:coverage\": \"cat .coverage/lcov.info | coveralls -v\"\n  },\n  \"dependencies\": {\n    \"sip.js\": \"^0.21.2\"\n  },\n  \"devDependencies\": {\n    \"@faker-js/faker\": \"^8.4.1\",\n    \"@playwright/test\": \"^1.44.1\",\n    \"@rc-ex/core\": \"^1.3.15\",\n    \"@ringcentral/sdk\": \"^5.0.1\",\n    \"@types/jest\": \"^29.5.12\",\n    \"@types/node\": \"^20.14.2\",\n    \"@typescript-eslint/eslint-plugin\": \"^7.13.0\",\n    \"@typescript-eslint/parser\": \"^7.13.0\",\n    \"bootstrap\": \"3.4.1\",\n    \"buffer\": \"^6.0.3\",\n    \"coveralls\": \"^3.1.1\",\n    \"crypto-browserify\": \"^3.12.0\",\n    \"dotenv-override-true\": \"^6.2.2\",\n    \"eslint\": \"8.57.0\",\n    \"eslint-config-alloy\": \"^5.1.2\",\n    \"eslint-config-prettier\": \"^9.1.0\",\n    \"eslint-plugin-jest\": \"^28.6.0\",\n    \"eslint-plugin-prettier\": \"^5.1.3\",\n    \"events\": \"^3.3.0\",\n    \"http-server\": \"^14.1.1\",\n    \"jest\": \"^29.7.0\",\n    \"jquery\": \"^3.7.1\",\n    \"parcel\": \"^2.12.0\",\n    \"prettier\": \"^3.3.1\",\n    \"process\": \"^0.11.10\",\n    \"querystring-es3\": 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index 7eb974d..0d280f9 100644
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index dad1068..7cee438 100644
--- a/docs/index.runtime.42757dfb.js.map
+++ b/docs/index.runtime.aa0fdf85.js.map
@@ -1 +1 @@
-{"mappings":"A,S,E,C,C,C,C,C,C,C,E,O,c,C,E,E,C,I,E,I,E,W,C,E,a,C,C,E,C,I,E,W,E,C,E,E,C,E,E,E,iB,A,O,I,A,C,E,S,C,E,G,K,E,O,C,C,E,C,O,C,G,K,E,C,I,E,C,C,E,A,Q,C,C,E,C,I,E,C,G,E,Q,C,C,E,O,C,C,E,C,E,E,I,C,E,O,C,E,E,O,E,E,O,A,C,I,E,A,M,uB,E,I,O,E,I,C,mB,C,C,E,Q,C,S,C,C,C,E,C,C,E,C,C,E,E,iB,C,G,A,C,E,E,Q,A,E,Q,S,C,C,C,E,E,E,O,C,W,I,E,A,G,E,G,E,E,O,C,U,I,E,A,G,E,GCEA,IAgBA,EACA,EAjBI,EAAU,IAAI,IAgBlB,EAfA,SAAkB,CAAO,CAAE,CAAQ,EACjC,IAAK,IAAI,EAAI,EAAG,EAAI,EAAS,MAAM,CAAG,EAAG,GAAK,EAC5C,EAAQ,GAAG,CAAC,CAAQ,CAAC,EAAE,CAAE,CACvB,QAAS,EACT,KAAM,CAAQ,CAAC,EAAI,EAAE,AACvB,EAEJ,EASA,EARA,SAAiB,CAAE,EACjB,IAAI,EAAW,EAAQ,GAAG,CAAC,GAC3B,GAAI,AAAY,MAAZ,EACF,MAAM,AAAI,MAAM,oCAAsC,GAExD,OAAO,IAAI,IAAI,EAAS,IAAI,CAAE,EAAS,OAAO,EAAE,QAAQ,EAC1D,C,GCjBA,AAAA,EAAA,SAAA,QAAA,CAA8C,IAAA,IAAoB,GAAA,YAAA,GAAA,EAAI,QAAQ,GAAG,KAAK,KAAK,CAAC","sources":["<anon>","node_modules/@parcel/runtime-js/lib/helpers/bundle-manifest.js","node_modules/@parcel/runtime-js/lib/runtime-971ffeb9dc515996.js"],"sourcesContent":["\nfunction $parcel$export(e, n, v, s) {\n  Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});\n}\n\n      var $parcel$global = globalThis;\n    \nvar $parcel$modules = {};\nvar $parcel$inits = {};\n\nvar parcelRequire = $parcel$global[\"parcelRequire2073\"];\n\nif (parcelRequire == null) {\n  parcelRequire = function(id) {\n    if (id in $parcel$modules) {\n      return $parcel$modules[id].exports;\n    }\n    if (id in $parcel$inits) {\n      var init = $parcel$inits[id];\n      delete $parcel$inits[id];\n      var module = {id: id, exports: {}};\n      $parcel$modules[id] = module;\n      init.call(module.exports, module, module.exports);\n      return module.exports;\n    }\n    var err = new Error(\"Cannot find module '\" + id + \"'\");\n    err.code = 'MODULE_NOT_FOUND';\n    throw err;\n  };\n\n  parcelRequire.register = function register(id, init) {\n    $parcel$inits[id] = init;\n  };\n\n  $parcel$global[\"parcelRequire2073\"] = parcelRequire;\n}\n\nvar parcelRegister = parcelRequire.register;\nparcelRegister(\"27Lyk\", function(module, exports) {\n\n$parcel$export(module.exports, \"register\", () => $18c11f3350a906ea$export$6503ec6e8aabbaf, (v) => $18c11f3350a906ea$export$6503ec6e8aabbaf = v);\n$parcel$export(module.exports, \"resolve\", () => $18c11f3350a906ea$export$f7ad0328861e2f03, (v) => $18c11f3350a906ea$export$f7ad0328861e2f03 = v);\nvar $18c11f3350a906ea$export$6503ec6e8aabbaf;\nvar $18c11f3350a906ea$export$f7ad0328861e2f03;\n\"use strict\";\nvar $18c11f3350a906ea$var$mapping = new Map();\nfunction $18c11f3350a906ea$var$register(baseUrl, manifest) {\n    for(var i = 0; i < manifest.length - 1; i += 2)$18c11f3350a906ea$var$mapping.set(manifest[i], {\n        baseUrl: baseUrl,\n        path: manifest[i + 1]\n    });\n}\nfunction $18c11f3350a906ea$var$resolve(id) {\n    var resolved = $18c11f3350a906ea$var$mapping.get(id);\n    if (resolved == null) throw new Error(\"Could not resolve bundle with id \" + id);\n    return new URL(resolved.path, resolved.baseUrl).toString();\n}\n$18c11f3350a906ea$export$6503ec6e8aabbaf = $18c11f3350a906ea$var$register;\n$18c11f3350a906ea$export$f7ad0328861e2f03 = $18c11f3350a906ea$var$resolve;\n\n});\n\nvar $c292367b1bfefd0e$exports = {};\n\n(parcelRequire(\"27Lyk\")).register(new URL(\"\", import.meta.url).toString(), JSON.parse('[\"03wFJ\",\"index.9050f078.js\",\"7tM2b\",\"incoming.4df5d2c2.ogg\",\"4weuN\",\"outgoing.32ff67a1.ogg\",\"ezIAn\",\"npm.9a40ac7c.js\",\"5mfQg\",\"index.ff75d985.js\",\"2hk2q\",\"index.f01e0bc4.css\"]'));\n\n\n//# sourceMappingURL=index.runtime.42757dfb.js.map\n","\"use strict\";\n\nvar mapping = new Map();\nfunction register(baseUrl, manifest) {\n  for (var i = 0; i < manifest.length - 1; i += 2) {\n    mapping.set(manifest[i], {\n      baseUrl: baseUrl,\n      path: manifest[i + 1]\n    });\n  }\n}\nfunction resolve(id) {\n  var resolved = mapping.get(id);\n  if (resolved == null) {\n    throw new Error('Could not resolve bundle with id ' + id);\n  }\n  return new URL(resolved.path, resolved.baseUrl).toString();\n}\nmodule.exports.register = register;\nmodule.exports.resolve = resolve;","require('./helpers/bundle-manifest').register(new __parcel__URL__(\"\").toString(),JSON.parse(\"[\\\"03wFJ\\\",\\\"index.9050f078.js\\\",\\\"7tM2b\\\",\\\"incoming.4df5d2c2.ogg\\\",\\\"4weuN\\\",\\\"outgoing.32ff67a1.ogg\\\",\\\"ezIAn\\\",\\\"npm.9a40ac7c.js\\\",\\\"5mfQg\\\",\\\"index.ff75d985.js\\\",\\\"2hk2q\\\",\\\"index.f01e0bc4.css\\\"]\"));"],"names":["$parcel$export","e","n","v","s","Object","defineProperty","get","set","enumerable","configurable","$parcel$global","globalThis","$parcel$modules","$parcel$inits","parcelRequire","id","exports","init","module","call","err","Error","code","register","parcelRegister","$18c11f3350a906ea$export$6503ec6e8aabbaf","$18c11f3350a906ea$export$f7ad0328861e2f03","$18c11f3350a906ea$var$mapping","Map","baseUrl","manifest","i","length","path","resolved","URL","toString","url","JSON","parse"],"version":3,"file":"index.runtime.42757dfb.js.map"}
\ No newline at end of file
+{"mappings":"A,S,E,C,C,C,C,C,C,C,E,O,c,C,E,E,C,I,E,I,E,W,C,E,a,C,C,E,C,I,E,W,E,C,E,E,C,E,E,E,iB,A,O,I,A,C,E,S,C,E,G,K,E,O,C,C,E,C,O,C,G,K,E,C,I,E,C,C,E,A,Q,C,C,E,C,I,E,C,G,E,Q,C,C,E,O,C,C,E,C,E,E,I,C,E,O,C,E,E,O,E,E,O,A,C,I,E,A,M,uB,E,I,O,E,I,C,mB,C,C,E,Q,C,S,C,C,C,E,C,C,E,C,C,E,E,iB,C,G,A,C,E,E,Q,A,E,Q,S,C,C,C,E,E,E,O,C,W,I,E,A,G,E,G,E,E,O,C,U,I,E,A,G,E,GCEA,IAgBA,EACA,EAjBI,EAAU,IAAI,IAgBlB,EAfA,SAAkB,CAAO,CAAE,CAAQ,EACjC,IAAK,IAAI,EAAI,EAAG,EAAI,EAAS,MAAM,CAAG,EAAG,GAAK,EAC5C,EAAQ,GAAG,CAAC,CAAQ,CAAC,EAAE,CAAE,CACvB,QAAS,EACT,KAAM,CAAQ,CAAC,EAAI,EAAE,AACvB,EAEJ,EASA,EARA,SAAiB,CAAE,EACjB,IAAI,EAAW,EAAQ,GAAG,CAAC,GAC3B,GAAI,AAAY,MAAZ,EACF,MAAM,AAAI,MAAM,oCAAsC,GAExD,OAAO,IAAI,IAAI,EAAS,IAAI,CAAE,EAAS,OAAO,EAAE,QAAQ,EAC1D,C,GCjBA,AAAA,EAAA,SAAA,QAAA,CAA8C,IAAA,IAAoB,GAAA,YAAA,GAAA,EAAI,QAAQ,GAAG,KAAK,KAAK,CAAC","sources":["<anon>","node_modules/@parcel/runtime-js/lib/helpers/bundle-manifest.js","node_modules/@parcel/runtime-js/lib/runtime-971ffeb9dc515996.js"],"sourcesContent":["\nfunction $parcel$export(e, n, v, s) {\n  Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});\n}\n\n      var $parcel$global = globalThis;\n    \nvar $parcel$modules = {};\nvar $parcel$inits = {};\n\nvar parcelRequire = $parcel$global[\"parcelRequire2073\"];\n\nif (parcelRequire == null) {\n  parcelRequire = function(id) {\n    if (id in $parcel$modules) {\n      return $parcel$modules[id].exports;\n    }\n    if (id in $parcel$inits) {\n      var init = $parcel$inits[id];\n      delete $parcel$inits[id];\n      var module = {id: id, exports: {}};\n      $parcel$modules[id] = module;\n      init.call(module.exports, module, module.exports);\n      return module.exports;\n    }\n    var err = new Error(\"Cannot find module '\" + id + \"'\");\n    err.code = 'MODULE_NOT_FOUND';\n    throw err;\n  };\n\n  parcelRequire.register = function register(id, init) {\n    $parcel$inits[id] = init;\n  };\n\n  $parcel$global[\"parcelRequire2073\"] = parcelRequire;\n}\n\nvar parcelRegister = parcelRequire.register;\nparcelRegister(\"27Lyk\", function(module, exports) {\n\n$parcel$export(module.exports, \"register\", () => $18c11f3350a906ea$export$6503ec6e8aabbaf, (v) => $18c11f3350a906ea$export$6503ec6e8aabbaf = v);\n$parcel$export(module.exports, \"resolve\", () => $18c11f3350a906ea$export$f7ad0328861e2f03, (v) => $18c11f3350a906ea$export$f7ad0328861e2f03 = v);\nvar $18c11f3350a906ea$export$6503ec6e8aabbaf;\nvar $18c11f3350a906ea$export$f7ad0328861e2f03;\n\"use strict\";\nvar $18c11f3350a906ea$var$mapping = new Map();\nfunction $18c11f3350a906ea$var$register(baseUrl, manifest) {\n    for(var i = 0; i < manifest.length - 1; i += 2)$18c11f3350a906ea$var$mapping.set(manifest[i], {\n        baseUrl: baseUrl,\n        path: manifest[i + 1]\n    });\n}\nfunction $18c11f3350a906ea$var$resolve(id) {\n    var resolved = $18c11f3350a906ea$var$mapping.get(id);\n    if (resolved == null) throw new Error(\"Could not resolve bundle with id \" + id);\n    return new URL(resolved.path, resolved.baseUrl).toString();\n}\n$18c11f3350a906ea$export$6503ec6e8aabbaf = $18c11f3350a906ea$var$register;\n$18c11f3350a906ea$export$f7ad0328861e2f03 = $18c11f3350a906ea$var$resolve;\n\n});\n\nvar $c292367b1bfefd0e$exports = {};\n\n(parcelRequire(\"27Lyk\")).register(new URL(\"\", import.meta.url).toString(), JSON.parse('[\"03wFJ\",\"index.5edd3872.js\",\"7tM2b\",\"incoming.4df5d2c2.ogg\",\"4weuN\",\"outgoing.32ff67a1.ogg\",\"ezIAn\",\"npm.9a40ac7c.js\",\"5mfQg\",\"index.ff75d985.js\",\"2hk2q\",\"index.f01e0bc4.css\"]'));\n\n\n//# sourceMappingURL=index.runtime.aa0fdf85.js.map\n","\"use strict\";\n\nvar mapping = new Map();\nfunction register(baseUrl, manifest) {\n  for (var i = 0; i < manifest.length - 1; i += 2) {\n    mapping.set(manifest[i], {\n      baseUrl: baseUrl,\n      path: manifest[i + 1]\n    });\n  }\n}\nfunction resolve(id) {\n  var resolved = mapping.get(id);\n  if (resolved == null) {\n    throw new Error('Could not resolve bundle with id ' + id);\n  }\n  return new URL(resolved.path, resolved.baseUrl).toString();\n}\nmodule.exports.register = register;\nmodule.exports.resolve = resolve;","require('./helpers/bundle-manifest').register(new __parcel__URL__(\"\").toString(),JSON.parse(\"[\\\"03wFJ\\\",\\\"index.5edd3872.js\\\",\\\"7tM2b\\\",\\\"incoming.4df5d2c2.ogg\\\",\\\"4weuN\\\",\\\"outgoing.32ff67a1.ogg\\\",\\\"ezIAn\\\",\\\"npm.9a40ac7c.js\\\",\\\"5mfQg\\\",\\\"index.ff75d985.js\\\",\\\"2hk2q\\\",\\\"index.f01e0bc4.css\\\"]\"));"],"names":["$parcel$export","e","n","v","s","Object","defineProperty","get","set","enumerable","configurable","$parcel$global","globalThis","$parcel$modules","$parcel$inits","parcelRequire","id","exports","init","module","call","err","Error","code","register","parcelRegister","$18c11f3350a906ea$export$6503ec6e8aabbaf","$18c11f3350a906ea$export$f7ad0328861e2f03","$18c11f3350a906ea$var$mapping","Map","baseUrl","manifest","i","length","path","resolved","URL","toString","url","JSON","parse"],"version":3,"file":"index.runtime.aa0fdf85.js.map"}
\ No newline at end of file
diff --git a/package.json b/package.json
index 445c230..5117aed 100644
--- a/package.json
+++ b/package.json
@@ -67,6 +67,7 @@
     "eslint-plugin-jest": "^28.6.0",
     "eslint-plugin-prettier": "^5.1.3",
     "events": "^3.3.0",
+    "fix-esm": "^1.0.1",
     "http-server": "^14.1.1",
     "jest": "^29.7.0",
     "jquery": "^3.7.1",
diff --git a/src/index.ts b/src/index.ts
index 7640486..6a3eeb5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -93,6 +93,8 @@ export interface WebPhoneOptions {
   builtinEnabled?: boolean;
   /** A function which will be called every time a log is generated. [Reference](https://github.com/onsip/SIP.js/blob/master/docs/api/sip.js.logconnector.md) */
   connector?: LogConnector;
+  /** Default headers to add to SIP messages */
+  defaultHeaders?: string[];
   /** If `true` media will be sent prior to call being answered
    *
    * Set to `true` by default for firefox browser
diff --git a/src/userAgent.ts b/src/userAgent.ts
index fbce892..c836e39 100644
--- a/src/userAgent.ts
+++ b/src/userAgent.ts
@@ -155,6 +155,9 @@ export function createWebPhoneUserAgent(
   userAgent.removeListener = eventEmitter.removeListener.bind(eventEmitter);
   userAgent.removeAllListeners = eventEmitter.removeAllListeners.bind(eventEmitter);
   userAgent.defaultHeaders = [`P-rc-endpoint-id: ${id}`, `Client-id: ${options.clientId}`];
+  if (options.defaultHeaders) {
+    userAgent.defaultHeaders.push(...options.defaultHeaders);
+  }
   userAgent.regId = options.regId;
   userAgent.media = {};
   userAgent.enableQos = options.enableQos;
diff --git a/test/index.spec.ts b/test/index.spec.ts
index 4d46d95..3c232d1 100644
--- a/test/index.spec.ts
+++ b/test/index.spec.ts
@@ -1,14 +1,45 @@
 import type { BrowserContext } from '@playwright/test';
 import { expect, test } from '@playwright/test';
 import RingCentral from '@rc-ex/core';
+const sip = require('fix-esm').require('sip.js'); // eslint-disable-line
+const log = new sip.Core.LoggerFactory();
+const logger = log.getLogger('test.parser');
 
-const login = async (context: BrowserContext, jwtToken: string) => {
+const waitFor = async (condition, pollInterval = 1000, timeout = 10000) => {
+  const startTime = Date.now();
+
+  while (true) {
+    if (Date.now() > startTime + timeout) {
+      throw 'timeout';
+    }
+
+    const result = await condition();
+
+    if (result) {
+      return result;
+    }
+
+    await new Promise((r) => setTimeout(r, pollInterval)); // eslint-disable-line
+  }
+};
+
+// eslint-disable-next-line max-params
+const login = async (context: BrowserContext, jwtToken: string, ws: any, options: { customHeader?: boolean } = {}) => {
   const page = await context.newPage();
-  await page.goto('/');
+
+  let path = '/';
+
+  if (options && options.customHeader) {
+    path += '?customHeader=true';
+  }
+
+  await page.goto(path);
   const title = page.locator('h1');
   await expect(title).toHaveText('RingCentral WebPhone Demo');
   await page.screenshot({ path: 'screenshots/before-login.png' });
 
+  page.on('websocket', ws);
+
   await page.fill('input[name="server"]', process.env.RC_WP_SERVER!);
   await page.fill('input[name="clientId"]', process.env.RC_WP_CLIENT_ID!);
   await page.fill('input[name="clientSecret"]', process.env.RC_WP_CLIENT_SECRET!);
@@ -27,9 +58,9 @@ const login = async (context: BrowserContext, jwtToken: string) => {
 
 test('home page', async ({ context }) => {
   // login
-  const callerPage = await login(context, process.env.RC_WP_CALLER_JWT_TOKEN!);
+  const callerPage = await login(context, process.env.RC_WP_CALLER_JWT_TOKEN!, () => {});
   await callerPage.screenshot({ path: 'screenshots/caller-logged-in.png' });
-  const receiverPage = await login(context, process.env.RC_WP_RECEIVER_JWT_TOKEN!);
+  const receiverPage = await login(context, process.env.RC_WP_RECEIVER_JWT_TOKEN!, () => {});
   await receiverPage.screenshot({ path: 'screenshots/receiver-logged-in.png' });
 
   // make the call
@@ -64,3 +95,27 @@ test('home page', async ({ context }) => {
   await expect(receiverPage.locator('text=Call In Progress')).toBeHidden();
   await receiverPage.screenshot({ path: 'screenshots/receiver-hung-up.png' });
 });
+
+test('allow to configure default headers', async ({ context }) => {
+  let wsHandled = false;
+  await login(
+    context,
+    process.env.RC_WP_CALLER_JWT_TOKEN!,
+    (ws) => {
+      ws.on('framesent', async (frame) => {
+        const parsed = sip.Core.Parser.parseMessage(frame.payload, logger);
+
+        if (parsed!.method === 'REGISTER') {
+          expect(parsed!.headers['P-Custom-Header'].length).toEqual(1);
+          expect(parsed!.headers['P-Custom-Header'][0].raw).toEqual('CustomValue');
+          wsHandled = true;
+        }
+      });
+    },
+    {
+      customHeader: true,
+    },
+  );
+
+  await waitFor(() => wsHandled);
+});
diff --git a/yarn.lock b/yarn.lock
index 6e271be..2611dda 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -17,11 +17,24 @@
   dependencies:
     "@babel/highlight" "^7.18.6"
 
+"@babel/code-frame@^7.24.7":
+  version "7.24.7"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.24.7.tgz#882fd9e09e8ee324e496bd040401c6f046ef4465"
+  integrity sha512-BcYH1CVJBO9tvyIZ2jVeXgSIMvGZ2FDRvDdOIVQyuklNKSsx+eppDEBq/g47Ayw+RqNFE+URvOShmf+f/qwAlA==
+  dependencies:
+    "@babel/highlight" "^7.24.7"
+    picocolors "^1.0.0"
+
 "@babel/compat-data@^7.21.5":
   version "7.21.9"
   resolved "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.21.9.tgz#10a2e7fda4e51742c907938ac3b7229426515514"
   integrity sha512-FUGed8kfhyWvbYug/Un/VPJD41rDIgoVVcR+FuzhzOYyRz5uED+Gd3SLZml0Uw2l2aHFb7ZgdW5mGA3G2cCCnQ==
 
+"@babel/compat-data@^7.25.2":
+  version "7.25.2"
+  resolved "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.25.2.tgz#e41928bd33475305c586f6acbbb7e3ade7a6f7f5"
+  integrity sha512-bYcppcpKBvX4znYaPEeFau03bp89ShqNMLs+rmdptMw+heSZh9+z84d2YG+K7cYLbWwzdjtDoW/uqZmPjulClQ==
+
 "@babel/core@^7.11.6", "@babel/core@^7.12.3":
   version "7.21.8"
   resolved "https://registry.npmjs.org/@babel/core/-/core-7.21.8.tgz#2a8c7f0f53d60100ba4c32470ba0281c92aa9aa4"
@@ -43,6 +56,27 @@
     json5 "^2.2.2"
     semver "^6.3.0"
 
+"@babel/core@^7.14.6":
+  version "7.25.2"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.25.2.tgz#ed8eec275118d7613e77a352894cd12ded8eba77"
+  integrity sha512-BBt3opiCOxUr9euZ5/ro/Xv8/V7yJ5bjYMqG/C1YAo8MIKAnumZalCN+msbci3Pigy4lIQfPUpfMM27HMGaYEA==
+  dependencies:
+    "@ampproject/remapping" "^2.2.0"
+    "@babel/code-frame" "^7.24.7"
+    "@babel/generator" "^7.25.0"
+    "@babel/helper-compilation-targets" "^7.25.2"
+    "@babel/helper-module-transforms" "^7.25.2"
+    "@babel/helpers" "^7.25.0"
+    "@babel/parser" "^7.25.0"
+    "@babel/template" "^7.25.0"
+    "@babel/traverse" "^7.25.2"
+    "@babel/types" "^7.25.2"
+    convert-source-map "^2.0.0"
+    debug "^4.1.0"
+    gensync "^1.0.0-beta.2"
+    json5 "^2.2.3"
+    semver "^6.3.1"
+
 "@babel/generator@^7.21.5", "@babel/generator@^7.7.2":
   version "7.21.9"
   resolved "https://registry.npmjs.org/@babel/generator/-/generator-7.21.9.tgz#3a1b706e07d836e204aee0650e8ee878d3aaa241"
@@ -53,6 +87,16 @@
     "@jridgewell/trace-mapping" "^0.3.17"
     jsesc "^2.5.1"
 
+"@babel/generator@^7.25.0":
+  version "7.25.0"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.25.0.tgz#f858ddfa984350bc3d3b7f125073c9af6988f18e"
+  integrity sha512-3LEEcj3PVW8pW2R1SR1M89g/qrYk/m/mB/tLqn7dn4sbBUQyTqnlod+II2U4dqiGtUmkcnAmkMDralTFZttRiw==
+  dependencies:
+    "@babel/types" "^7.25.0"
+    "@jridgewell/gen-mapping" "^0.3.5"
+    "@jridgewell/trace-mapping" "^0.3.25"
+    jsesc "^2.5.1"
+
 "@babel/helper-compilation-targets@^7.21.5":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.21.5.tgz#631e6cc784c7b660417421349aac304c94115366"
@@ -64,6 +108,17 @@
     lru-cache "^5.1.1"
     semver "^6.3.0"
 
+"@babel/helper-compilation-targets@^7.25.2":
+  version "7.25.2"
+  resolved "https://registry.yarnpkg.com/@babel/helper-compilation-targets/-/helper-compilation-targets-7.25.2.tgz#e1d9410a90974a3a5a66e84ff55ef62e3c02d06c"
+  integrity sha512-U2U5LsSaZ7TAt3cfaymQ8WHh0pxvdHoEk6HVpaexxixjyEquMh0L0YNJNM6CTGKMXV1iksi0iZkGw4AcFkPaaw==
+  dependencies:
+    "@babel/compat-data" "^7.25.2"
+    "@babel/helper-validator-option" "^7.24.8"
+    browserslist "^4.23.1"
+    lru-cache "^5.1.1"
+    semver "^6.3.1"
+
 "@babel/helper-environment-visitor@^7.21.5":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/helper-environment-visitor/-/helper-environment-visitor-7.21.5.tgz#c769afefd41d171836f7cb63e295bedf689d48ba"
@@ -91,6 +146,14 @@
   dependencies:
     "@babel/types" "^7.21.4"
 
+"@babel/helper-module-imports@^7.24.7":
+  version "7.24.7"
+  resolved "https://registry.yarnpkg.com/@babel/helper-module-imports/-/helper-module-imports-7.24.7.tgz#f2f980392de5b84c3328fc71d38bd81bbb83042b"
+  integrity sha512-8AyH3C+74cgCVVXow/myrynrAGv+nTVg5vKu2nZph9x7RcRwzmh0VFallJuFTZ9mx6u4eSdXZfcOzSqTUm0HCA==
+  dependencies:
+    "@babel/traverse" "^7.24.7"
+    "@babel/types" "^7.24.7"
+
 "@babel/helper-module-transforms@^7.21.5":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.21.5.tgz#d937c82e9af68d31ab49039136a222b17ac0b420"
@@ -105,11 +168,26 @@
     "@babel/traverse" "^7.21.5"
     "@babel/types" "^7.21.5"
 
+"@babel/helper-module-transforms@^7.24.8", "@babel/helper-module-transforms@^7.25.2":
+  version "7.25.2"
+  resolved "https://registry.yarnpkg.com/@babel/helper-module-transforms/-/helper-module-transforms-7.25.2.tgz#ee713c29768100f2776edf04d4eb23b8d27a66e6"
+  integrity sha512-BjyRAbix6j/wv83ftcVJmBt72QtHI56C7JXZoG2xATiLpmoC7dpd8WnkikExHDVPpi/3qCmO6WY1EaXOluiecQ==
+  dependencies:
+    "@babel/helper-module-imports" "^7.24.7"
+    "@babel/helper-simple-access" "^7.24.7"
+    "@babel/helper-validator-identifier" "^7.24.7"
+    "@babel/traverse" "^7.25.2"
+
 "@babel/helper-plugin-utils@^7.0.0", "@babel/helper-plugin-utils@^7.10.4", "@babel/helper-plugin-utils@^7.12.13", "@babel/helper-plugin-utils@^7.14.5", "@babel/helper-plugin-utils@^7.20.2", "@babel/helper-plugin-utils@^7.8.0":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/helper-plugin-utils/-/helper-plugin-utils-7.21.5.tgz#345f2377d05a720a4e5ecfa39cbf4474a4daed56"
   integrity sha512-0WDaIlXKOX/3KfBK/dwP1oQGiPh6rjMkT7HIRv7i5RR2VUMwrx5ZL0dwBkKx7+SW1zwNdgjHd34IMk5ZjTeHVg==
 
+"@babel/helper-plugin-utils@^7.18.9", "@babel/helper-plugin-utils@^7.24.8", "@babel/helper-plugin-utils@^7.8.3":
+  version "7.24.8"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.24.8.tgz#94ee67e8ec0e5d44ea7baeb51e571bd26af07878"
+  integrity sha512-FFWx5142D8h2Mgr/iPVGH5G7w6jDn4jUSpZTyDnQO0Yn7Ks2Kuz6Pci8H6MPCoUJegd/UZQ3tAvfLCxQSnWWwg==
+
 "@babel/helper-simple-access@^7.21.5":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/helper-simple-access/-/helper-simple-access-7.21.5.tgz#d697a7971a5c39eac32c7e63c0921c06c8a249ee"
@@ -117,6 +195,14 @@
   dependencies:
     "@babel/types" "^7.21.5"
 
+"@babel/helper-simple-access@^7.24.7":
+  version "7.24.7"
+  resolved "https://registry.yarnpkg.com/@babel/helper-simple-access/-/helper-simple-access-7.24.7.tgz#bcade8da3aec8ed16b9c4953b74e506b51b5edb3"
+  integrity sha512-zBAIvbCMh5Ts+b86r/CjU+4XGYIs+R1j951gxI3KmmxBMhCg4oQMsv6ZXQ64XOm/cvzfU1FmoCyt6+owc5QMYg==
+  dependencies:
+    "@babel/traverse" "^7.24.7"
+    "@babel/types" "^7.24.7"
+
 "@babel/helper-split-export-declaration@^7.18.6":
   version "7.18.6"
   resolved "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.18.6.tgz#7367949bc75b20c6d5a5d4a97bba2824ae8ef075"
@@ -129,16 +215,31 @@
   resolved "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.21.5.tgz#2b3eea65443c6bdc31c22d037c65f6d323b6b2bd"
   integrity sha512-5pTUx3hAJaZIdW99sJ6ZUUgWq/Y+Hja7TowEnLNMm1VivRgZQL3vpBY3qUACVsvw+yQU6+YgfBVmcbLaZtrA1w==
 
+"@babel/helper-string-parser@^7.24.8":
+  version "7.24.8"
+  resolved "https://registry.yarnpkg.com/@babel/helper-string-parser/-/helper-string-parser-7.24.8.tgz#5b3329c9a58803d5df425e5785865881a81ca48d"
+  integrity sha512-pO9KhhRcuUyGnJWwyEgnRJTSIZHiT+vMD0kPeD+so0l7mxkMT19g3pjY9GTnHySck/hDzq+dtW/4VgnMkippsQ==
+
 "@babel/helper-validator-identifier@^7.18.6", "@babel/helper-validator-identifier@^7.19.1":
   version "7.19.1"
   resolved "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.19.1.tgz#7eea834cf32901ffdc1a7ee555e2f9c27e249ca2"
   integrity sha512-awrNfaMtnHUr653GgGEs++LlAvW6w+DcPrOliSMXWCKo597CwL5Acf/wWdNkf/tfEQE3mjkeD1YOVZOUV/od1w==
 
+"@babel/helper-validator-identifier@^7.24.7":
+  version "7.24.7"
+  resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.24.7.tgz#75b889cfaf9e35c2aaf42cf0d72c8e91719251db"
+  integrity sha512-rR+PBcQ1SMQDDyF6X0wxtG8QyLCgUB0eRAGguqRLfkCA87l7yAP7ehq8SNj96OOGTO8OBV70KhuFYcIkHXOg0w==
+
 "@babel/helper-validator-option@^7.21.0":
   version "7.21.0"
   resolved "https://registry.npmjs.org/@babel/helper-validator-option/-/helper-validator-option-7.21.0.tgz#8224c7e13ace4bafdc4004da2cf064ef42673180"
   integrity sha512-rmL/B8/f0mKS2baE9ZpyTcTavvEuWhTTW8amjzXNvYG4AwBsqTLikfXsEofsJEfKHf+HQVQbFOHy6o+4cnC/fQ==
 
+"@babel/helper-validator-option@^7.24.8":
+  version "7.24.8"
+  resolved "https://registry.yarnpkg.com/@babel/helper-validator-option/-/helper-validator-option-7.24.8.tgz#3725cdeea8b480e86d34df15304806a06975e33d"
+  integrity sha512-xb8t9tD1MHLungh/AIoWYN+gVHaB9kwlu8gffXGSt3FFEIT7RjS+xWbc2vUD1UTZdIpKj/ab3rdqJ7ufngyi2Q==
+
 "@babel/helpers@^7.21.5":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/helpers/-/helpers-7.21.5.tgz#5bac66e084d7a4d2d9696bdf0175a93f7fb63c08"
@@ -148,6 +249,14 @@
     "@babel/traverse" "^7.21.5"
     "@babel/types" "^7.21.5"
 
+"@babel/helpers@^7.25.0":
+  version "7.25.0"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.25.0.tgz#e69beb7841cb93a6505531ede34f34e6a073650a"
+  integrity sha512-MjgLZ42aCm0oGjJj8CtSM3DB8NOOf8h2l7DCTePJs29u+v7yO/RBX9nShlKMgFnRks/Q4tBAe7Hxnov9VkGwLw==
+  dependencies:
+    "@babel/template" "^7.25.0"
+    "@babel/types" "^7.25.0"
+
 "@babel/highlight@^7.18.6":
   version "7.18.6"
   resolved "https://registry.npmjs.org/@babel/highlight/-/highlight-7.18.6.tgz#81158601e93e2563795adcbfbdf5d64be3f2ecdf"
@@ -157,11 +266,36 @@
     chalk "^2.0.0"
     js-tokens "^4.0.0"
 
+"@babel/highlight@^7.24.7":
+  version "7.24.7"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.24.7.tgz#a05ab1df134b286558aae0ed41e6c5f731bf409d"
+  integrity sha512-EStJpq4OuY8xYfhGVXngigBJRWxftKX9ksiGDnmlY3o7B/V7KIAc9X4oiK87uPJSc/vs5L869bem5fhZa8caZw==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.24.7"
+    chalk "^2.4.2"
+    js-tokens "^4.0.0"
+    picocolors "^1.0.0"
+
 "@babel/parser@^7.1.0", "@babel/parser@^7.14.7", "@babel/parser@^7.20.7", "@babel/parser@^7.21.5", "@babel/parser@^7.21.8", "@babel/parser@^7.21.9":
   version "7.21.9"
   resolved "https://registry.npmjs.org/@babel/parser/-/parser-7.21.9.tgz#ab18ea3b85b4bc33ba98a8d4c2032c557d23cf14"
   integrity sha512-q5PNg/Bi1OpGgx5jYlvWZwAorZepEudDMCLtj967aeS7WMont7dUZI46M2XwcIQqvUlMxWfdLFu4S/qSxeUu5g==
 
+"@babel/parser@^7.25.0", "@babel/parser@^7.25.3":
+  version "7.25.3"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.25.3.tgz#91fb126768d944966263f0657ab222a642b82065"
+  integrity sha512-iLTJKDbJ4hMvFPgQwwsVoxtHyWpKKPBrxkANrSYewDPaPpT5py5yeVkgPIJ7XYXhndxJpaA3PyALSXQ7u8e/Dw==
+  dependencies:
+    "@babel/types" "^7.25.2"
+
+"@babel/plugin-proposal-export-namespace-from@^7.14.5":
+  version "7.18.9"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-export-namespace-from/-/plugin-proposal-export-namespace-from-7.18.9.tgz#5f7313ab348cdb19d590145f9247540e94761203"
+  integrity sha512-k1NtHyOMvlDDFeb9G5PhUXuGj8m/wiwojgQVEhJ/fsVsMCpLyOP4h0uGEjYJKrRI+EVPlb5Jk+Gt9P97lOGwtA==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.18.9"
+    "@babel/plugin-syntax-export-namespace-from" "^7.8.3"
+
 "@babel/plugin-syntax-async-generators@^7.8.4":
   version "7.8.4"
   resolved "https://registry.npmjs.org/@babel/plugin-syntax-async-generators/-/plugin-syntax-async-generators-7.8.4.tgz#a983fb1aeb2ec3f6ed042a210f640e90e786fe0d"
@@ -183,6 +317,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.12.13"
 
+"@babel/plugin-syntax-export-namespace-from@^7.8.3":
+  version "7.8.3"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-export-namespace-from/-/plugin-syntax-export-namespace-from-7.8.3.tgz#028964a9ba80dbc094c915c487ad7c4e7a66465a"
+  integrity sha512-MXf5laXo6c1IbEbegDmzGPwGNTsHZmEy6QGznu5Sh2UCWvueywb2ee+CCE4zQiZstxU9BMoQO9i6zUFSY0Kj0Q==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.8.3"
+
 "@babel/plugin-syntax-import-meta@^7.8.3":
   version "7.10.4"
   resolved "https://registry.npmjs.org/@babel/plugin-syntax-import-meta/-/plugin-syntax-import-meta-7.10.4.tgz#ee601348c370fa334d2207be158777496521fd51"
@@ -260,6 +401,15 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.20.2"
 
+"@babel/plugin-transform-modules-commonjs@^7.14.5":
+  version "7.24.8"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-modules-commonjs/-/plugin-transform-modules-commonjs-7.24.8.tgz#ab6421e564b717cb475d6fff70ae7f103536ea3c"
+  integrity sha512-WHsk9H8XxRs3JXKWFiqtQebdh9b/pTk4EgueygFzYlTKAg0Ud985mSevdNjdXdFBATSKVJGQXP1tv6aGbssLKA==
+  dependencies:
+    "@babel/helper-module-transforms" "^7.24.8"
+    "@babel/helper-plugin-utils" "^7.24.8"
+    "@babel/helper-simple-access" "^7.24.7"
+
 "@babel/template@^7.20.7", "@babel/template@^7.3.3":
   version "7.21.9"
   resolved "https://registry.npmjs.org/@babel/template/-/template-7.21.9.tgz#bf8dad2859130ae46088a99c1f265394877446fb"
@@ -269,6 +419,15 @@
     "@babel/parser" "^7.21.9"
     "@babel/types" "^7.21.5"
 
+"@babel/template@^7.25.0":
+  version "7.25.0"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.25.0.tgz#e733dc3134b4fede528c15bc95e89cb98c52592a"
+  integrity sha512-aOOgh1/5XzKvg1jvVz7AVrx2piJ2XBi227DHmbY6y+bM9H2FlN+IfecYu4Xl0cNiiVejlsCri89LUsbj8vJD9Q==
+  dependencies:
+    "@babel/code-frame" "^7.24.7"
+    "@babel/parser" "^7.25.0"
+    "@babel/types" "^7.25.0"
+
 "@babel/traverse@^7.21.5":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/traverse/-/traverse-7.21.5.tgz#ad22361d352a5154b498299d523cf72998a4b133"
@@ -285,6 +444,19 @@
     debug "^4.1.0"
     globals "^11.1.0"
 
+"@babel/traverse@^7.24.7", "@babel/traverse@^7.25.2":
+  version "7.25.3"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.25.3.tgz#f1b901951c83eda2f3e29450ce92743783373490"
+  integrity sha512-HefgyP1x754oGCsKmV5reSmtV7IXj/kpaE1XYY+D9G5PvKKoFfSbiS4M77MdjuwlZKDIKFCffq9rPU+H/s3ZdQ==
+  dependencies:
+    "@babel/code-frame" "^7.24.7"
+    "@babel/generator" "^7.25.0"
+    "@babel/parser" "^7.25.3"
+    "@babel/template" "^7.25.0"
+    "@babel/types" "^7.25.2"
+    debug "^4.3.1"
+    globals "^11.1.0"
+
 "@babel/types@^7.0.0", "@babel/types@^7.18.6", "@babel/types@^7.20.7", "@babel/types@^7.21.0", "@babel/types@^7.21.4", "@babel/types@^7.21.5", "@babel/types@^7.3.0", "@babel/types@^7.3.3":
   version "7.21.5"
   resolved "https://registry.npmjs.org/@babel/types/-/types-7.21.5.tgz#18dfbd47c39d3904d5db3d3dc2cc80bedb60e5b6"
@@ -294,6 +466,15 @@
     "@babel/helper-validator-identifier" "^7.19.1"
     to-fast-properties "^2.0.0"
 
+"@babel/types@^7.24.7", "@babel/types@^7.25.0", "@babel/types@^7.25.2":
+  version "7.25.2"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.25.2.tgz#55fb231f7dc958cd69ea141a4c2997e819646125"
+  integrity sha512-YTnYtra7W9e6/oAZEHj0bJehPRUlLH9/fbpT5LfB0NhQXyALCRkRs3zH9v07IYhkgpqX6Z78FnuccZr/l4Fs4Q==
+  dependencies:
+    "@babel/helper-string-parser" "^7.24.8"
+    "@babel/helper-validator-identifier" "^7.24.7"
+    to-fast-properties "^2.0.0"
+
 "@bcoe/v8-coverage@^0.2.3":
   version "0.2.3"
   resolved "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"
@@ -605,6 +786,15 @@
     "@jridgewell/sourcemap-codec" "^1.4.10"
     "@jridgewell/trace-mapping" "^0.3.9"
 
+"@jridgewell/gen-mapping@^0.3.5":
+  version "0.3.5"
+  resolved "https://registry.yarnpkg.com/@jridgewell/gen-mapping/-/gen-mapping-0.3.5.tgz#dcce6aff74bdf6dad1a95802b69b04a2fcb1fb36"
+  integrity sha512-IzL8ZoEDIBRWEzlCcRhOaCupYyN5gdIK+Q6fbFdPDg6HqX6jpkItn7DFIpW9LQzXG6Df9sA7+OKnq0qlz/GaQg==
+  dependencies:
+    "@jridgewell/set-array" "^1.2.1"
+    "@jridgewell/sourcemap-codec" "^1.4.10"
+    "@jridgewell/trace-mapping" "^0.3.24"
+
 "@jridgewell/resolve-uri@3.1.0":
   version "3.1.0"
   resolved "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.0.tgz#2203b118c157721addfe69d47b70465463066d78"
@@ -620,6 +810,11 @@
   resolved "https://registry.npmjs.org/@jridgewell/set-array/-/set-array-1.1.2.tgz#7c6cf998d6d20b914c0a55a91ae928ff25965e72"
   integrity sha512-xnkseuNADM0gt2bs+BvhO0p78Mk762YnZdsuzFV018NoG1Sj1SCQvpSqa7XUaTam5vAGasABV9qXASMKnFMwMw==
 
+"@jridgewell/set-array@^1.2.1":
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/@jridgewell/set-array/-/set-array-1.2.1.tgz#558fb6472ed16a4c850b889530e6b36438c49280"
+  integrity sha512-R8gLRTZeyp03ymzP/6Lil/28tGeGEzhx1q2k703KGWRAI1VdvPIXdG70VJc2pAMw3NA6JKL5hhFu1sJX0Mnn/A==
+
 "@jridgewell/sourcemap-codec@1.4.14":
   version "1.4.14"
   resolved "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.14.tgz#add4c98d341472a289190b424efbdb096991bb24"
@@ -654,6 +849,14 @@
     "@jridgewell/resolve-uri" "^3.1.0"
     "@jridgewell/sourcemap-codec" "^1.4.14"
 
+"@jridgewell/trace-mapping@^0.3.24", "@jridgewell/trace-mapping@^0.3.25":
+  version "0.3.25"
+  resolved "https://registry.yarnpkg.com/@jridgewell/trace-mapping/-/trace-mapping-0.3.25.tgz#15f190e98895f3fc23276ee14bc76b675c2e50f0"
+  integrity sha512-vNk6aEwybGtawWmy/PzwnGDOjCkLWSD2wqvjGGAgOAwCGWySYXfYoxt00IJkTF+8Lb57DwOb3Aa0o9CApepiYQ==
+  dependencies:
+    "@jridgewell/resolve-uri" "^3.1.0"
+    "@jridgewell/sourcemap-codec" "^1.4.14"
+
 "@lezer/common@^0.15.0", "@lezer/common@^0.15.7":
   version "0.15.12"
   resolved "https://registry.npmjs.org/@lezer/common/-/common-0.15.12.tgz#2f21aec551dd5fd7d24eb069f90f54d5bc6ee5e9"
@@ -2102,6 +2305,16 @@ browserslist@^4.21.3, browserslist@^4.6.6:
     node-releases "^2.0.8"
     update-browserslist-db "^1.0.10"
 
+browserslist@^4.23.1:
+  version "4.23.3"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.23.3.tgz#debb029d3c93ebc97ffbc8d9cbb03403e227c800"
+  integrity sha512-btwCFJVjI4YWDNfau8RhZ+B1Q/VLoUITrm3RlP6y1tYGWIOa+InuYiRGXUBXo8nA1qKmHMyLB/iVQg5TT4eFoA==
+  dependencies:
+    caniuse-lite "^1.0.30001646"
+    electron-to-chromium "^1.5.4"
+    node-releases "^2.0.18"
+    update-browserslist-db "^1.1.0"
+
 bs-logger@0.x:
   version "0.2.6"
   resolved "https://registry.npmjs.org/bs-logger/-/bs-logger-0.2.6.tgz#eb7d365307a72cf974cc6cda76b68354ad336bd8"
@@ -2173,12 +2386,17 @@ caniuse-lite@^1.0.30001449:
   resolved "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001489.tgz#ca82ee2d4e4dbf2bd2589c9360d3fcc2c7ba3bd8"
   integrity sha512-x1mgZEXK8jHIfAxm+xgdpHpk50IN3z3q3zP261/WS+uvePxW8izXuCu6AHz0lkuYTlATDehiZ/tNyYBdSQsOUQ==
 
+caniuse-lite@^1.0.30001646:
+  version "1.0.30001646"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001646.tgz#d472f2882259ba032dd73ee069ff01bfd059b25d"
+  integrity sha512-dRg00gudiBDDTmUhClSdv3hqRfpbOnU28IpI1T6PBTLWa+kOj0681C8uML3PifYfREuBrVjDGhL3adYpBT6spw==
+
 caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
   integrity sha512-4tYFyifaFfGacoiObjJegolkwSU4xQNGbVgUiNYVUxbQ2x2lUsFvY4hVgVzGiIe6WLOPqycWXA40l+PWsxthUw==
 
-chalk@^2.0.0:
+chalk@^2.0.0, chalk@^2.4.2:
   version "2.4.2"
   resolved "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
   integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
@@ -2624,6 +2842,11 @@ electron-to-chromium@^1.4.284:
   resolved "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.406.tgz#6388f92a0443d0f0ffcda890489edbe2012488f2"
   integrity sha512-NXlDDH8Z4tK5ZX7w9dW/lRUsZ0TwL1rg3Sw1e5HKbk3+LCAh3SyUjYyGoxOf9xNxyg+DtaofkFpHS4T5Z2Q26w==
 
+electron-to-chromium@^1.5.4:
+  version "1.5.4"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.5.4.tgz#cd477c830dd6fca41fbd5465c1ff6ce08ac22343"
+  integrity sha512-orzA81VqLyIGUEA77YkVA1D+N+nNfl2isJVjjmOyrlxuooZ19ynb+dOlaDTqd/idKRS9lDCSBmtzM+kyCsMnkA==
+
 elliptic@^6.5.3:
   version "6.5.4"
   resolved "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz#da37cebd31e79a1367e941b592ed1fbebd58abbb"
@@ -2681,6 +2904,11 @@ escalade@^3.1.1:
   resolved "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"
   integrity sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==
 
+escalade@^3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.2.tgz#54076e9ab29ea5bf3d8f1ed62acffbb88272df27"
+  integrity sha512-ErCHMCae19vR8vQGe50xIsVomy19rg6gFu3+r3jkEO46suLMWBksvVyoGgQV+jOfl84ZSOSlmv6Gxa89PmTGmA==
+
 escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
@@ -2971,6 +3199,15 @@ find-up@^5.0.0:
     locate-path "^6.0.0"
     path-exists "^4.0.0"
 
+fix-esm@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/fix-esm/-/fix-esm-1.0.1.tgz#e0e2199d841e43ff7db9b5f5ba7496bc45130ebb"
+  integrity sha512-EZtb7wPXZS54GaGxaWxMlhd1DUDCnAg5srlYdu/1ZVeW+7wwR3Tp59nu52dXByFs3MBRq+SByx1wDOJpRvLEXw==
+  dependencies:
+    "@babel/core" "^7.14.6"
+    "@babel/plugin-proposal-export-namespace-from" "^7.14.5"
+    "@babel/plugin-transform-modules-commonjs" "^7.14.5"
+
 flat-cache@^3.0.4:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-3.2.0.tgz#2c0c2d5040c99b1632771a9d105725c0115363ee"
@@ -4384,6 +4621,11 @@ node-int64@^0.4.0:
   resolved "https://registry.npmjs.org/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
   integrity sha512-O5lz91xSOeoXP6DulyHfllpq+Eg00MWitZIbtPfoSEvqIHdl5gfcY6hYzDWnj0qD5tz52PI08u9qUvSVeUBeHw==
 
+node-releases@^2.0.18:
+  version "2.0.18"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-2.0.18.tgz#f010e8d35e2fe8d6b2944f03f70213ecedc4ca3f"
+  integrity sha512-d9VeXT4SJ7ZeOqGX6R5EM022wpL+eWPooLI+5UpWn2jCT1aosUQEhQP214x33Wkwx3JQMvIm+tIoVOdodFS40g==
+
 node-releases@^2.0.8:
   version "2.0.12"
   resolved "https://registry.npmjs.org/node-releases/-/node-releases-2.0.12.tgz#35627cc224a23bfb06fb3380f2b3afaaa7eb1039"
@@ -4591,6 +4833,11 @@ picocolors@^1.0.0:
   resolved "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz#cb5bdc74ff3f51892236eaf79d68bc44564ab81c"
   integrity sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ==
 
+picocolors@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.1.tgz#a8ad579b571952f0e5d25892de5445bcfe25aaa1"
+  integrity sha512-anP1Z8qwhkbmu7MFP5iTt+wQKXgwzf7zTyGlcdzabySa9vd0Xt392U0rVmz9poOaBj0uHJKyyo9/upk0HrEQew==
+
 picomatch@^2.0.4, picomatch@^2.2.3, picomatch@^2.3.1:
   version "2.3.1"
   resolved "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz#3ba3833733646d9d3e4995946c1365a67fb07a42"
@@ -4937,6 +5184,11 @@ semver@^6.0.0, semver@^6.3.0:
   resolved "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
   integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
 
+semver@^6.3.1:
+  version "6.3.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.1.tgz#556d2ef8689146e46dcea4bfdd095f3434dffcb4"
+  integrity sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==
+
 semver@^7.5.2, semver@^7.5.3, semver@^7.5.4:
   version "7.5.4"
   resolved "https://registry.yarnpkg.com/semver/-/semver-7.5.4.tgz#483986ec4ed38e1c6c48c34894a9182dbff68a6e"
@@ -5371,6 +5623,14 @@ update-browserslist-db@^1.0.10:
     escalade "^3.1.1"
     picocolors "^1.0.0"
 
+update-browserslist-db@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/update-browserslist-db/-/update-browserslist-db-1.1.0.tgz#7ca61c0d8650766090728046e416a8cde682859e"
+  integrity sha512-EdRAaAyk2cUE1wOf2DkEhzxqOQvFOoRJFNS6NeyJ01Gp2beMRpBAINjM2iDXE3KCuKhwnvHIQCJm6ThL2Z+HzQ==
+  dependencies:
+    escalade "^3.1.2"
+    picocolors "^1.0.1"
+
 uri-js@^4.2.2:
   version "4.4.1"
   resolved "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"