From dec57dee650de886c873cacce283fa98b5bd66e3 Mon Sep 17 00:00:00 2001 From: Pedro Rodriguez Date: Tue, 13 Aug 2019 16:01:54 +0200 Subject: [PATCH] Update adapter.js (#1448) --- erizo_controller/erizoClient/lib/adapter.js | 8763 ++++++++++--------- 1 file changed, 4821 insertions(+), 3942 deletions(-) diff --git a/erizo_controller/erizoClient/lib/adapter.js b/erizo_controller/erizoClient/lib/adapter.js index a9dd735455..545bf9acca 100644 --- a/erizo_controller/erizoClient/lib/adapter.js +++ b/erizo_controller/erizoClient/lib/adapter.js @@ -1,2233 +1,2071 @@ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.adapter = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o= 14393 && - url.indexOf('?transport=udp') === -1; - }); +var chromeShim = _interopRequireWildcard(_chrome_shim); - delete server.url; - server.urls = isString ? urls[0] : urls; - return !!urls.length; - } - return false; - }); -} +var _edge_shim = require('./edge/edge_shim'); -// Determines the intersection of local and remote capabilities. -function getCommonCapabilities(localCapabilities, remoteCapabilities) { - var commonCapabilities = { - codecs: [], - headerExtensions: [], - fecMechanisms: [] - }; +var edgeShim = _interopRequireWildcard(_edge_shim); - var findCodecByPayloadType = function(pt, codecs) { - pt = parseInt(pt, 10); - for (var i = 0; i < codecs.length; i++) { - if (codecs[i].payloadType === pt || - codecs[i].preferredPayloadType === pt) { - return codecs[i]; - } - } - }; +var _firefox_shim = require('./firefox/firefox_shim'); - var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) { - var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs); - var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs); - return lCodec && rCodec && - lCodec.name.toLowerCase() === rCodec.name.toLowerCase(); - }; +var firefoxShim = _interopRequireWildcard(_firefox_shim); - localCapabilities.codecs.forEach(function(lCodec) { - for (var i = 0; i < remoteCapabilities.codecs.length; i++) { - var rCodec = remoteCapabilities.codecs[i]; - if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && - lCodec.clockRate === rCodec.clockRate) { - if (lCodec.name.toLowerCase() === 'rtx' && - lCodec.parameters && rCodec.parameters.apt) { - // for RTX we need to find the local rtx that has a apt - // which points to the same local codec as the remote one. - if (!rtxCapabilityMatches(lCodec, rCodec, - localCapabilities.codecs, remoteCapabilities.codecs)) { - continue; - } - } - rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy - // number of channels is the highest common number of channels - rCodec.numChannels = Math.min(lCodec.numChannels, - rCodec.numChannels); - // push rCodec so we reply with offerer payload type - commonCapabilities.codecs.push(rCodec); +var _safari_shim = require('./safari/safari_shim'); - // determine common feedback mechanisms - rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) { - for (var j = 0; j < lCodec.rtcpFeedback.length; j++) { - if (lCodec.rtcpFeedback[j].type === fb.type && - lCodec.rtcpFeedback[j].parameter === fb.parameter) { - return true; - } - } - return false; - }); - // FIXME: also need to determine .parameters - // see https://github.com/openpeer/ortc/issues/569 - break; - } - } - }); +var safariShim = _interopRequireWildcard(_safari_shim); - localCapabilities.headerExtensions.forEach(function(lHeaderExtension) { - for (var i = 0; i < remoteCapabilities.headerExtensions.length; - i++) { - var rHeaderExtension = remoteCapabilities.headerExtensions[i]; - if (lHeaderExtension.uri === rHeaderExtension.uri) { - commonCapabilities.headerExtensions.push(rHeaderExtension); - break; - } - } - }); +var _common_shim = require('./common_shim'); - // FIXME: fecMechanisms - return commonCapabilities; -} +var commonShim = _interopRequireWildcard(_common_shim); -// is action=setLocalDescription with type allowed in signalingState -function isActionAllowedInSignalingState(action, type, signalingState) { - return { - offer: { - setLocalDescription: ['stable', 'have-local-offer'], - setRemoteDescription: ['stable', 'have-remote-offer'] - }, - answer: { - setLocalDescription: ['have-remote-offer', 'have-local-pranswer'], - setRemoteDescription: ['have-local-offer', 'have-remote-pranswer'] - } - }[type][action].indexOf(signalingState) !== -1; -} +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } -function maybeAddCandidate(iceTransport, candidate) { - // Edge's internal representation adds some fields therefore - // not all fieldѕ are taken into account. - var alreadyAdded = iceTransport.getRemoteCandidates() - .find(function(remoteCandidate) { - return candidate.foundation === remoteCandidate.foundation && - candidate.ip === remoteCandidate.ip && - candidate.port === remoteCandidate.port && - candidate.priority === remoteCandidate.priority && - candidate.protocol === remoteCandidate.protocol && - candidate.type === remoteCandidate.type; - }); - if (!alreadyAdded) { - iceTransport.addRemoteCandidate(candidate); - } - return !alreadyAdded; -} +// Shimming starts here. +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +function adapterFactory() { + var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}, + window = _ref.window; -module.exports = function(window, edgeVersion) { - var RTCPeerConnection = function(config) { - var self = this; + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : { + shimChrome: true, + shimFirefox: true, + shimEdge: true, + shimSafari: true + }; - var _eventTarget = document.createDocumentFragment(); - ['addEventListener', 'removeEventListener', 'dispatchEvent'] - .forEach(function(method) { - self[method] = _eventTarget[method].bind(_eventTarget); - }); + // Utils. + var logging = utils.log; + var browserDetails = utils.detectBrowser(window); - this.onicecandidate = null; - this.onaddstream = null; - this.ontrack = null; - this.onremovestream = null; - this.onsignalingstatechange = null; - this.oniceconnectionstatechange = null; - this.onicegatheringstatechange = null; - this.onnegotiationneeded = null; - this.ondatachannel = null; - this.canTrickleIceCandidates = null; + var adapter = { + browserDetails: browserDetails, + commonShim: commonShim, + extractVersion: utils.extractVersion, + disableLog: utils.disableLog, + disableWarnings: utils.disableWarnings + }; - this.needNegotiation = false; + // Shim browser if found. + switch (browserDetails.browser) { + case 'chrome': + if (!chromeShim || !chromeShim.shimPeerConnection || !options.shimChrome) { + logging('Chrome shim is not included in this adapter release.'); + return adapter; + } + logging('adapter.js shimming chrome.'); + // Export to the adapter global object visible in the browser. + adapter.browserShim = chromeShim; - this.localStreams = []; - this.remoteStreams = []; + chromeShim.shimGetUserMedia(window); + chromeShim.shimMediaStream(window); + chromeShim.shimPeerConnection(window); + chromeShim.shimOnTrack(window); + chromeShim.shimAddTrackRemoveTrack(window); + chromeShim.shimGetSendersWithDtmf(window); + chromeShim.shimGetStats(window); + chromeShim.shimSenderReceiverGetStats(window); + chromeShim.fixNegotiationNeeded(window); - this.localDescription = null; - this.remoteDescription = null; + commonShim.shimRTCIceCandidate(window); + commonShim.shimConnectionState(window); + commonShim.shimMaxMessageSize(window); + commonShim.shimSendThrowTypeError(window); + commonShim.removeAllowExtmapMixed(window); + break; + case 'firefox': + if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) { + logging('Firefox shim is not included in this adapter release.'); + return adapter; + } + logging('adapter.js shimming firefox.'); + // Export to the adapter global object visible in the browser. + adapter.browserShim = firefoxShim; - this.signalingState = 'stable'; - this.iceConnectionState = 'new'; - this.iceGatheringState = 'new'; + firefoxShim.shimGetUserMedia(window); + firefoxShim.shimPeerConnection(window); + firefoxShim.shimOnTrack(window); + firefoxShim.shimRemoveStream(window); + firefoxShim.shimSenderGetStats(window); + firefoxShim.shimReceiverGetStats(window); + firefoxShim.shimRTCDataChannel(window); - config = JSON.parse(JSON.stringify(config || {})); + commonShim.shimRTCIceCandidate(window); + commonShim.shimConnectionState(window); + commonShim.shimMaxMessageSize(window); + commonShim.shimSendThrowTypeError(window); + break; + case 'edge': + if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) { + logging('MS edge shim is not included in this adapter release.'); + return adapter; + } + logging('adapter.js shimming edge.'); + // Export to the adapter global object visible in the browser. + adapter.browserShim = edgeShim; - this.usingBundle = config.bundlePolicy === 'max-bundle'; - if (config.rtcpMuxPolicy === 'negotiate') { - var e = new Error('rtcpMuxPolicy \'negotiate\' is not supported'); - e.name = 'NotSupportedError'; - throw(e); - } else if (!config.rtcpMuxPolicy) { - config.rtcpMuxPolicy = 'require'; - } + edgeShim.shimGetUserMedia(window); + edgeShim.shimGetDisplayMedia(window); + edgeShim.shimPeerConnection(window); + edgeShim.shimReplaceTrack(window); - switch (config.iceTransportPolicy) { - case 'all': - case 'relay': - break; - default: - config.iceTransportPolicy = 'all'; - break; - } + // the edge shim implements the full RTCIceCandidate object. - switch (config.bundlePolicy) { - case 'balanced': - case 'max-compat': - case 'max-bundle': - break; - default: - config.bundlePolicy = 'balanced'; - break; - } + commonShim.shimMaxMessageSize(window); + commonShim.shimSendThrowTypeError(window); + break; + case 'safari': + if (!safariShim || !options.shimSafari) { + logging('Safari shim is not included in this adapter release.'); + return adapter; + } + logging('adapter.js shimming safari.'); + // Export to the adapter global object visible in the browser. + adapter.browserShim = safariShim; - config.iceServers = filterIceServers(config.iceServers || [], edgeVersion); + safariShim.shimRTCIceServerUrls(window); + safariShim.shimCreateOfferLegacy(window); + safariShim.shimCallbacksAPI(window); + safariShim.shimLocalStreamsAPI(window); + safariShim.shimRemoteStreamsAPI(window); + safariShim.shimTrackEventTransceiver(window); + safariShim.shimGetUserMedia(window); - this._iceGatherers = []; - if (config.iceCandidatePoolSize) { - for (var i = config.iceCandidatePoolSize; i > 0; i--) { - this._iceGatherers = new window.RTCIceGatherer({ - iceServers: config.iceServers, - gatherPolicy: config.iceTransportPolicy - }); - } - } else { - config.iceCandidatePoolSize = 0; - } + commonShim.shimRTCIceCandidate(window); + commonShim.shimMaxMessageSize(window); + commonShim.shimSendThrowTypeError(window); + commonShim.removeAllowExtmapMixed(window); + break; + default: + logging('Unsupported browser!'); + break; + } - this._config = config; + return adapter; +} - // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ... - // everything that is needed to describe a SDP m-line. - this.transceivers = []; +// Browser shims. - this._sdpSessionId = SDPUtils.generateSessionId(); - this._sdpSessionVersion = 0; +},{"./chrome/chrome_shim":3,"./common_shim":6,"./edge/edge_shim":7,"./firefox/firefox_shim":11,"./safari/safari_shim":14,"./utils":15}],3:[function(require,module,exports){ - this._dtlsRole = undefined; // role for a=setup to use in answers. - }; +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - RTCPeerConnection.prototype._emitGatheringStateChange = function() { - var event = new Event('icegatheringstatechange'); - this.dispatchEvent(event); - if (typeof this.onicegatheringstatechange === 'function') { - this.onicegatheringstatechange(event); - } - }; +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined; - RTCPeerConnection.prototype.getConfiguration = function() { - return this._config; - }; +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; - RTCPeerConnection.prototype.getLocalStreams = function() { - return this.localStreams; - }; +var _getusermedia = require('./getusermedia'); - RTCPeerConnection.prototype.getRemoteStreams = function() { - return this.remoteStreams; - }; +Object.defineProperty(exports, 'shimGetUserMedia', { + enumerable: true, + get: function get() { + return _getusermedia.shimGetUserMedia; + } +}); - // internal helper to create a transceiver object. - // (whih is not yet the same as the WebRTC 1.0 transceiver) - RTCPeerConnection.prototype._createTransceiver = function(kind) { - var hasBundleTransport = this.transceivers.length > 0; - var transceiver = { - track: null, - iceGatherer: null, - iceTransport: null, - dtlsTransport: null, - localCapabilities: null, - remoteCapabilities: null, - rtpSender: null, - rtpReceiver: null, - kind: kind, - mid: null, - sendEncodingParameters: null, - recvEncodingParameters: null, - stream: null, - wantReceive: true - }; - if (this.usingBundle && hasBundleTransport) { - transceiver.iceTransport = this.transceivers[0].iceTransport; - transceiver.dtlsTransport = this.transceivers[0].dtlsTransport; - } else { - var transports = this._createIceAndDtlsTransports(); - transceiver.iceTransport = transports.iceTransport; - transceiver.dtlsTransport = transports.dtlsTransport; - } - this.transceivers.push(transceiver); - return transceiver; - }; +var _getdisplaymedia = require('./getdisplaymedia'); - RTCPeerConnection.prototype.addTrack = function(track, stream) { - var transceiver; - for (var i = 0; i < this.transceivers.length; i++) { - if (!this.transceivers[i].track && - this.transceivers[i].kind === track.kind) { - transceiver = this.transceivers[i]; - } - } - if (!transceiver) { - transceiver = this._createTransceiver(track.kind); - } +Object.defineProperty(exports, 'shimGetDisplayMedia', { + enumerable: true, + get: function get() { + return _getdisplaymedia.shimGetDisplayMedia; + } +}); +exports.shimMediaStream = shimMediaStream; +exports.shimOnTrack = shimOnTrack; +exports.shimGetSendersWithDtmf = shimGetSendersWithDtmf; +exports.shimGetStats = shimGetStats; +exports.shimSenderReceiverGetStats = shimSenderReceiverGetStats; +exports.shimAddTrackRemoveTrackWithNative = shimAddTrackRemoveTrackWithNative; +exports.shimAddTrackRemoveTrack = shimAddTrackRemoveTrack; +exports.shimPeerConnection = shimPeerConnection; +exports.fixNegotiationNeeded = fixNegotiationNeeded; - this._maybeFireNegotiationNeeded(); +var _utils = require('../utils.js'); - if (this.localStreams.indexOf(stream) === -1) { - this.localStreams.push(stream); - } +var utils = _interopRequireWildcard(_utils); - transceiver.track = track; - transceiver.stream = stream; - transceiver.rtpSender = new window.RTCRtpSender(track, - transceiver.dtlsTransport); - return transceiver.rtpSender; - }; +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } - RTCPeerConnection.prototype.addStream = function(stream) { - var self = this; - if (edgeVersion >= 15025) { - stream.getTracks().forEach(function(track) { - self.addTrack(track, stream); - }); - } else { - // Clone is necessary for local demos mostly, attaching directly - // to two different senders does not work (build 10547). - // Fixed in 15025 (or earlier) - var clonedStream = stream.clone(); - stream.getTracks().forEach(function(track, idx) { - var clonedTrack = clonedStream.getTracks()[idx]; - track.addEventListener('enabled', function(event) { - clonedTrack.enabled = event.enabled; - }); - }); - clonedStream.getTracks().forEach(function(track) { - self.addTrack(track, clonedStream); - }); - } - }; +function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } - RTCPeerConnection.prototype.removeStream = function(stream) { - var idx = this.localStreams.indexOf(stream); - if (idx > -1) { - this.localStreams.splice(idx, 1); - this._maybeFireNegotiationNeeded(); - } - }; +function shimMediaStream(window) { + window.MediaStream = window.MediaStream || window.webkitMediaStream; +} - RTCPeerConnection.prototype.getSenders = function() { - return this.transceivers.filter(function(transceiver) { - return !!transceiver.rtpSender; - }) - .map(function(transceiver) { - return transceiver.rtpSender; +function shimOnTrack(window) { + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) { + Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { + get: function get() { + return this._ontrack; + }, + set: function set(f) { + if (this._ontrack) { + this.removeEventListener('track', this._ontrack); + } + this.addEventListener('track', this._ontrack = f); + }, + + enumerable: true, + configurable: true }); - }; + var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription; + window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() { + var _this = this; + + if (!this._ontrackpoly) { + this._ontrackpoly = function (e) { + // onaddstream does not fire when a track is added to an existing + // stream. But stream.onaddtrack is implemented so we use that. + e.stream.addEventListener('addtrack', function (te) { + var receiver = void 0; + if (window.RTCPeerConnection.prototype.getReceivers) { + receiver = _this.getReceivers().find(function (r) { + return r.track && r.track.id === te.track.id; + }); + } else { + receiver = { track: te.track }; + } - RTCPeerConnection.prototype.getReceivers = function() { - return this.transceivers.filter(function(transceiver) { - return !!transceiver.rtpReceiver; - }) - .map(function(transceiver) { - return transceiver.rtpReceiver; + var event = new Event('track'); + event.track = te.track; + event.receiver = receiver; + event.transceiver = { receiver: receiver }; + event.streams = [e.stream]; + _this.dispatchEvent(event); + }); + e.stream.getTracks().forEach(function (track) { + var receiver = void 0; + if (window.RTCPeerConnection.prototype.getReceivers) { + receiver = _this.getReceivers().find(function (r) { + return r.track && r.track.id === track.id; + }); + } else { + receiver = { track: track }; + } + var event = new Event('track'); + event.track = track; + event.receiver = receiver; + event.transceiver = { receiver: receiver }; + event.streams = [e.stream]; + _this.dispatchEvent(event); + }); + }; + this.addEventListener('addstream', this._ontrackpoly); + } + return origSetRemoteDescription.apply(this, arguments); + }; + } else { + // even if RTCRtpTransceiver is in window, it is only used and + // emitted in unified-plan. Unfortunately this means we need + // to unconditionally wrap the event. + utils.wrapPeerConnectionEvent(window, 'track', function (e) { + if (!e.transceiver) { + Object.defineProperty(e, 'transceiver', { value: { receiver: e.receiver } }); + } + return e; }); - }; + } +} +function shimGetSendersWithDtmf(window) { + // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack. + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) { + var shimSenderWithDtmf = function shimSenderWithDtmf(pc, track) { + return { + track: track, + get dtmf() { + if (this._dtmf === undefined) { + if (track.kind === 'audio') { + this._dtmf = pc.createDTMFSender(track); + } else { + this._dtmf = null; + } + } + return this._dtmf; + }, + _pc: pc + }; + }; - RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex, - usingBundle) { - var self = this; - if (usingBundle && sdpMLineIndex > 0) { - return this.transceivers[0].iceGatherer; - } else if (this._iceGatherers.length) { - return this._iceGatherers.shift(); + // augment addTrack when getSenders is not available. + if (!window.RTCPeerConnection.prototype.getSenders) { + window.RTCPeerConnection.prototype.getSenders = function getSenders() { + this._senders = this._senders || []; + return this._senders.slice(); // return a copy of the internal state. + }; + var origAddTrack = window.RTCPeerConnection.prototype.addTrack; + window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) { + var sender = origAddTrack.apply(this, arguments); + if (!sender) { + sender = shimSenderWithDtmf(this, track); + this._senders.push(sender); + } + return sender; + }; + + var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack; + window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) { + origRemoveTrack.apply(this, arguments); + var idx = this._senders.indexOf(sender); + if (idx !== -1) { + this._senders.splice(idx, 1); + } + }; } - var iceGatherer = new window.RTCIceGatherer({ - iceServers: this._config.iceServers, - gatherPolicy: this._config.iceTransportPolicy - }); - Object.defineProperty(iceGatherer, 'state', - {value: 'new', writable: true} - ); + var origAddStream = window.RTCPeerConnection.prototype.addStream; + window.RTCPeerConnection.prototype.addStream = function addStream(stream) { + var _this2 = this; - this.transceivers[sdpMLineIndex].candidates = []; - this.transceivers[sdpMLineIndex].bufferCandidates = function(event) { - var end = !event.candidate || Object.keys(event.candidate).length === 0; - // polyfill since RTCIceGatherer.state is not implemented in - // Edge 10547 yet. - iceGatherer.state = end ? 'completed' : 'gathering'; - if (self.transceivers[sdpMLineIndex].candidates !== null) { - self.transceivers[sdpMLineIndex].candidates.push(event.candidate); - } + this._senders = this._senders || []; + origAddStream.apply(this, [stream]); + stream.getTracks().forEach(function (track) { + _this2._senders.push(shimSenderWithDtmf(_this2, track)); + }); }; - iceGatherer.addEventListener('localcandidate', - this.transceivers[sdpMLineIndex].bufferCandidates); - return iceGatherer; - }; - // start gathering from an RTCIceGatherer. - RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) { - var self = this; - var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; - if (iceGatherer.onlocalcandidate) { - return; - } - var candidates = this.transceivers[sdpMLineIndex].candidates; - this.transceivers[sdpMLineIndex].candidates = null; - iceGatherer.removeEventListener('localcandidate', - this.transceivers[sdpMLineIndex].bufferCandidates); - iceGatherer.onlocalcandidate = function(evt) { - if (self.usingBundle && sdpMLineIndex > 0) { - // if we know that we use bundle we can drop candidates with - // ѕdpMLineIndex > 0. If we don't do this then our state gets - // confused since we dispose the extra ice gatherer. - return; - } - var event = new Event('icecandidate'); - event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex}; + var origRemoveStream = window.RTCPeerConnection.prototype.removeStream; + window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { + var _this3 = this; - var cand = evt.candidate; - // Edge emits an empty object for RTCIceCandidateComplete‥ - var end = !cand || Object.keys(cand).length === 0; - if (end) { - // polyfill since RTCIceGatherer.state is not implemented in - // Edge 10547 yet. - if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') { - iceGatherer.state = 'completed'; + this._senders = this._senders || []; + origRemoveStream.apply(this, [stream]); + + stream.getTracks().forEach(function (track) { + var sender = _this3._senders.find(function (s) { + return s.track === track; + }); + if (sender) { + // remove sender + _this3._senders.splice(_this3._senders.indexOf(sender), 1); } - } else { - if (iceGatherer.state === 'new') { - iceGatherer.state = 'gathering'; + }); + }; + } else if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) { + var origGetSenders = window.RTCPeerConnection.prototype.getSenders; + window.RTCPeerConnection.prototype.getSenders = function getSenders() { + var _this4 = this; + + var senders = origGetSenders.apply(this, []); + senders.forEach(function (sender) { + return sender._pc = _this4; + }); + return senders; + }; + + Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', { + get: function get() { + if (this._dtmf === undefined) { + if (this.track.kind === 'audio') { + this._dtmf = this._pc.createDTMFSender(this.track); + } else { + this._dtmf = null; + } } - // RTCIceCandidate doesn't have a component, needs to be added - cand.component = 1; - event.candidate.candidate = SDPUtils.writeCandidate(cand); + return this._dtmf; } + }); + } +} - // update local description. - var sections = SDPUtils.splitSections(self.localDescription.sdp); - if (!end) { - sections[event.candidate.sdpMLineIndex + 1] += - 'a=' + event.candidate.candidate + '\r\n'; - } else { - sections[event.candidate.sdpMLineIndex + 1] += - 'a=end-of-candidates\r\n'; - } - self.localDescription.sdp = sections.join(''); - var complete = self.transceivers.every(function(transceiver) { - return transceiver.iceGatherer && - transceiver.iceGatherer.state === 'completed'; - }); +function shimGetStats(window) { + if (!window.RTCPeerConnection) { + return; + } - if (self.iceGatheringState !== 'gathering') { - self.iceGatheringState = 'gathering'; - self._emitGatheringStateChange(); - } + var origGetStats = window.RTCPeerConnection.prototype.getStats; + window.RTCPeerConnection.prototype.getStats = function getStats() { + var _this5 = this; - // Emit candidate. Also emit null candidate when all gatherers are - // complete. - if (!end) { - self.dispatchEvent(event); - if (typeof self.onicecandidate === 'function') { - self.onicecandidate(event); - } - } - if (complete) { - self.dispatchEvent(new Event('icecandidate')); - if (typeof self.onicecandidate === 'function') { - self.onicecandidate(new Event('icecandidate')); - } - self.iceGatheringState = 'complete'; - self._emitGatheringStateChange(); - } - }; + var _arguments = Array.prototype.slice.call(arguments), + selector = _arguments[0], + onSucc = _arguments[1], + onErr = _arguments[2]; - // emit already gathered candidates. - window.setTimeout(function() { - candidates.forEach(function(candidate) { - var e = new Event('RTCIceGatherEvent'); - e.candidate = candidate; - iceGatherer.onlocalcandidate(e); + // If selector is a function then we are in the old style stats so just + // pass back the original getStats format to avoid breaking old users. + + + if (arguments.length > 0 && typeof selector === 'function') { + return origGetStats.apply(this, arguments); + } + + // When spec-style getStats is supported, return those when called with + // either no arguments or the selector argument is null. + if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) { + return origGetStats.apply(this, []); + } + + var fixChromeStats_ = function fixChromeStats_(response) { + var standardReport = {}; + var reports = response.result(); + reports.forEach(function (report) { + var standardStats = { + id: report.id, + timestamp: report.timestamp, + type: { + localcandidate: 'local-candidate', + remotecandidate: 'remote-candidate' + }[report.type] || report.type + }; + report.names().forEach(function (name) { + standardStats[name] = report.stat(name); + }); + standardReport[standardStats.id] = standardStats; }); - }, 0); - }; - // Create ICE transport and DTLS transport. - RTCPeerConnection.prototype._createIceAndDtlsTransports = function() { - var self = this; - var iceTransport = new window.RTCIceTransport(null); - iceTransport.onicestatechange = function() { - self._updateConnectionState(); + return standardReport; }; - var dtlsTransport = new window.RTCDtlsTransport(iceTransport); - dtlsTransport.ondtlsstatechange = function() { - self._updateConnectionState(); - }; - dtlsTransport.onerror = function() { - // onerror does not set state to failed by itself. - Object.defineProperty(dtlsTransport, 'state', - {value: 'failed', writable: true}); - self._updateConnectionState(); + // shim getStats with maplike support + var makeMapStats = function makeMapStats(stats) { + return new Map(Object.keys(stats).map(function (key) { + return [key, stats[key]]; + })); }; - return { - iceTransport: iceTransport, - dtlsTransport: dtlsTransport - }; - }; + if (arguments.length >= 2) { + var successCallbackWrapper_ = function successCallbackWrapper_(response) { + onSucc(makeMapStats(fixChromeStats_(response))); + }; - // Destroy ICE gatherer, ICE transport and DTLS transport. - // Without triggering the callbacks. - RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function( - sdpMLineIndex) { - var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; - if (iceGatherer) { - delete iceGatherer.onlocalcandidate; - delete this.transceivers[sdpMLineIndex].iceGatherer; - } - var iceTransport = this.transceivers[sdpMLineIndex].iceTransport; - if (iceTransport) { - delete iceTransport.onicestatechange; - delete this.transceivers[sdpMLineIndex].iceTransport; - } - var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport; - if (dtlsTransport) { - delete dtlsTransport.ondtlsstatechange; - delete dtlsTransport.onerror; - delete this.transceivers[sdpMLineIndex].dtlsTransport; + return origGetStats.apply(this, [successCallbackWrapper_, selector]); } + + // promise-support + return new Promise(function (resolve, reject) { + origGetStats.apply(_this5, [function (response) { + resolve(makeMapStats(fixChromeStats_(response))); + }, reject]); + }).then(onSucc, onErr); }; +} - // Start the RTP Sender and Receiver for a transceiver. - RTCPeerConnection.prototype._transceive = function(transceiver, - send, recv) { - var params = getCommonCapabilities(transceiver.localCapabilities, - transceiver.remoteCapabilities); - if (send && transceiver.rtpSender) { - params.encodings = transceiver.sendEncodingParameters; - params.rtcp = { - cname: SDPUtils.localCName, - compound: transceiver.rtcpParameters.compound - }; - if (transceiver.recvEncodingParameters.length) { - params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc; - } - transceiver.rtpSender.send(params); - } - if (recv && transceiver.rtpReceiver && params.codecs.length > 0) { - // remove RTX field in Edge 14942 - if (transceiver.kind === 'video' - && transceiver.recvEncodingParameters - && edgeVersion < 15019) { - transceiver.recvEncodingParameters.forEach(function(p) { - delete p.rtx; +function shimSenderReceiverGetStats(window) { + if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) { + return; + } + + // shim sender stats. + if (!('getStats' in window.RTCRtpSender.prototype)) { + var origGetSenders = window.RTCPeerConnection.prototype.getSenders; + if (origGetSenders) { + window.RTCPeerConnection.prototype.getSenders = function getSenders() { + var _this6 = this; + + var senders = origGetSenders.apply(this, []); + senders.forEach(function (sender) { + return sender._pc = _this6; }); - } - params.encodings = transceiver.recvEncodingParameters; - params.rtcp = { - cname: transceiver.rtcpParameters.cname, - compound: transceiver.rtcpParameters.compound + return senders; }; - if (transceiver.sendEncodingParameters.length) { - params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc; - } - transceiver.rtpReceiver.receive(params); } - }; - - RTCPeerConnection.prototype.setLocalDescription = function(description) { - var self = this; - var args = arguments; - if (!isActionAllowedInSignalingState('setLocalDescription', - description.type, this.signalingState)) { - return new Promise(function(resolve, reject) { - var e = new Error('Can not set local ' + description.type + - ' in state ' + self.signalingState); - e.name = 'InvalidStateError'; - if (args.length > 2 && typeof args[2] === 'function') { - args[2].apply(null, [e]); - } - reject(e); - }); + var origAddTrack = window.RTCPeerConnection.prototype.addTrack; + if (origAddTrack) { + window.RTCPeerConnection.prototype.addTrack = function addTrack() { + var sender = origAddTrack.apply(this, arguments); + sender._pc = this; + return sender; + }; } - - var sections; - var sessionpart; - if (description.type === 'offer') { - // VERY limited support for SDP munging. Limited to: - // * changing the order of codecs - sections = SDPUtils.splitSections(description.sdp); - sessionpart = sections.shift(); - sections.forEach(function(mediaSection, sdpMLineIndex) { - var caps = SDPUtils.parseRtpParameters(mediaSection); - self.transceivers[sdpMLineIndex].localCapabilities = caps; + window.RTCRtpSender.prototype.getStats = function getStats() { + var sender = this; + return this._pc.getStats().then(function (result) { + return ( + /* Note: this will include stats of all senders that + * send a track with the same id as sender.track as + * it is not possible to identify the RTCRtpSender. + */ + utils.filterStats(result, sender.track, true) + ); }); + }; + } - this.transceivers.forEach(function(transceiver, sdpMLineIndex) { - self._gather(transceiver.mid, sdpMLineIndex); + // shim receiver stats. + if (!('getStats' in window.RTCRtpReceiver.prototype)) { + var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers; + if (origGetReceivers) { + window.RTCPeerConnection.prototype.getReceivers = function getReceivers() { + var _this7 = this; + + var receivers = origGetReceivers.apply(this, []); + receivers.forEach(function (receiver) { + return receiver._pc = _this7; + }); + return receivers; + }; + } + utils.wrapPeerConnectionEvent(window, 'track', function (e) { + e.receiver._pc = e.srcElement; + return e; + }); + window.RTCRtpReceiver.prototype.getStats = function getStats() { + var receiver = this; + return this._pc.getStats().then(function (result) { + return utils.filterStats(result, receiver.track, false); }); - } else if (description.type === 'answer') { - sections = SDPUtils.splitSections(self.remoteDescription.sdp); - sessionpart = sections.shift(); - var isIceLite = SDPUtils.matchPrefix(sessionpart, - 'a=ice-lite').length > 0; - sections.forEach(function(mediaSection, sdpMLineIndex) { - var transceiver = self.transceivers[sdpMLineIndex]; - var iceGatherer = transceiver.iceGatherer; - var iceTransport = transceiver.iceTransport; - var dtlsTransport = transceiver.dtlsTransport; - var localCapabilities = transceiver.localCapabilities; - var remoteCapabilities = transceiver.remoteCapabilities; + }; + } - // treat bundle-only as not-rejected. - var rejected = SDPUtils.isRejected(mediaSection) && - !SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 1; + if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) { + return; + } - if (!rejected && !transceiver.isDatachannel) { - var remoteIceParameters = SDPUtils.getIceParameters( - mediaSection, sessionpart); - var remoteDtlsParameters = SDPUtils.getDtlsParameters( - mediaSection, sessionpart); - if (isIceLite) { - remoteDtlsParameters.role = 'server'; + // shim RTCPeerConnection.getStats(track). + var origGetStats = window.RTCPeerConnection.prototype.getStats; + window.RTCPeerConnection.prototype.getStats = function getStats() { + if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) { + var track = arguments[0]; + var sender = void 0; + var receiver = void 0; + var err = void 0; + this.getSenders().forEach(function (s) { + if (s.track === track) { + if (sender) { + err = true; + } else { + sender = s; } - - if (!self.usingBundle || sdpMLineIndex === 0) { - self._gather(transceiver.mid, sdpMLineIndex); - if (iceTransport.state === 'new') { - iceTransport.start(iceGatherer, remoteIceParameters, - isIceLite ? 'controlling' : 'controlled'); - } - if (dtlsTransport.state === 'new') { - dtlsTransport.start(remoteDtlsParameters); - } + } + }); + this.getReceivers().forEach(function (r) { + if (r.track === track) { + if (receiver) { + err = true; + } else { + receiver = r; } - - // Calculate intersection of capabilities. - var params = getCommonCapabilities(localCapabilities, - remoteCapabilities); - - // Start the RTCRtpSender. The RTCRtpReceiver for this - // transceiver has already been started in setRemoteDescription. - self._transceive(transceiver, - params.codecs.length > 0, - false); } + return r.track === track; }); + if (err || sender && receiver) { + return Promise.reject(new DOMException('There are more than one sender or receiver for the track.', 'InvalidAccessError')); + } else if (sender) { + return sender.getStats(); + } else if (receiver) { + return receiver.getStats(); + } + return Promise.reject(new DOMException('There is no sender or receiver for the track.', 'InvalidAccessError')); } + return origGetStats.apply(this, arguments); + }; +} - this.localDescription = { - type: description.type, - sdp: description.sdp - }; - switch (description.type) { - case 'offer': - this._updateSignalingState('have-local-offer'); - break; - case 'answer': - this._updateSignalingState('stable'); - break; - default: - throw new TypeError('unsupported type "' + description.type + - '"'); +function shimAddTrackRemoveTrackWithNative(window) { + // shim addTrack/removeTrack with native variants in order to make + // the interactions with legacy getLocalStreams behave as in other browsers. + // Keeps a mapping stream.id => [stream, rtpsenders...] + window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() { + var _this8 = this; + + this._shimmedLocalStreams = this._shimmedLocalStreams || {}; + return Object.keys(this._shimmedLocalStreams).map(function (streamId) { + return _this8._shimmedLocalStreams[streamId][0]; + }); + }; + + var origAddTrack = window.RTCPeerConnection.prototype.addTrack; + window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) { + if (!stream) { + return origAddTrack.apply(this, arguments); } + this._shimmedLocalStreams = this._shimmedLocalStreams || {}; - // If a success callback was provided, emit ICE candidates after it - // has been executed. Otherwise, emit callback after the Promise is - // resolved. - var cb = arguments.length > 1 && typeof arguments[1] === 'function' && - arguments[1]; - return new Promise(function(resolve) { - if (cb) { - cb.apply(null); + var sender = origAddTrack.apply(this, arguments); + if (!this._shimmedLocalStreams[stream.id]) { + this._shimmedLocalStreams[stream.id] = [stream, sender]; + } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) { + this._shimmedLocalStreams[stream.id].push(sender); + } + return sender; + }; + + var origAddStream = window.RTCPeerConnection.prototype.addStream; + window.RTCPeerConnection.prototype.addStream = function addStream(stream) { + var _this9 = this; + + this._shimmedLocalStreams = this._shimmedLocalStreams || {}; + + stream.getTracks().forEach(function (track) { + var alreadyExists = _this9.getSenders().find(function (s) { + return s.track === track; + }); + if (alreadyExists) { + throw new DOMException('Track already exists.', 'InvalidAccessError'); } - resolve(); }); + var existingSenders = this.getSenders(); + origAddStream.apply(this, arguments); + var newSenders = this.getSenders().filter(function (newSender) { + return existingSenders.indexOf(newSender) === -1; + }); + this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders); }; - RTCPeerConnection.prototype.setRemoteDescription = function(description) { - var self = this; - var args = arguments; + var origRemoveStream = window.RTCPeerConnection.prototype.removeStream; + window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { + this._shimmedLocalStreams = this._shimmedLocalStreams || {}; + delete this._shimmedLocalStreams[stream.id]; + return origRemoveStream.apply(this, arguments); + }; - if (!isActionAllowedInSignalingState('setRemoteDescription', - description.type, this.signalingState)) { - return new Promise(function(resolve, reject) { - var e = new Error('Can not set remote ' + description.type + - ' in state ' + self.signalingState); - e.name = 'InvalidStateError'; - if (args.length > 2 && typeof args[2] === 'function') { - args[2].apply(null, [e]); + var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack; + window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) { + var _this10 = this; + + this._shimmedLocalStreams = this._shimmedLocalStreams || {}; + if (sender) { + Object.keys(this._shimmedLocalStreams).forEach(function (streamId) { + var idx = _this10._shimmedLocalStreams[streamId].indexOf(sender); + if (idx !== -1) { + _this10._shimmedLocalStreams[streamId].splice(idx, 1); + } + if (_this10._shimmedLocalStreams[streamId].length === 1) { + delete _this10._shimmedLocalStreams[streamId]; } - reject(e); }); } + return origRemoveTrack.apply(this, arguments); + }; +} - var streams = {}; - this.remoteStreams.forEach(function(stream) { - streams[stream.id] = stream; - }); - var receiverList = []; - var sections = SDPUtils.splitSections(description.sdp); - var sessionpart = sections.shift(); - var isIceLite = SDPUtils.matchPrefix(sessionpart, - 'a=ice-lite').length > 0; - var usingBundle = SDPUtils.matchPrefix(sessionpart, - 'a=group:BUNDLE ').length > 0; - this.usingBundle = usingBundle; - var iceOptions = SDPUtils.matchPrefix(sessionpart, - 'a=ice-options:')[0]; - if (iceOptions) { - this.canTrickleIceCandidates = iceOptions.substr(14).split(' ') - .indexOf('trickle') >= 0; - } else { - this.canTrickleIceCandidates = false; - } - - sections.forEach(function(mediaSection, sdpMLineIndex) { - var lines = SDPUtils.splitLines(mediaSection); - var kind = SDPUtils.getKind(mediaSection); - // treat bundle-only as not-rejected. - var rejected = SDPUtils.isRejected(mediaSection) && - !SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 1; - var protocol = lines[0].substr(2).split(' ')[2]; +function shimAddTrackRemoveTrack(window) { + if (!window.RTCPeerConnection) { + return; + } + var browserDetails = utils.detectBrowser(window); + // shim addTrack and removeTrack. + if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) { + return shimAddTrackRemoveTrackWithNative(window); + } - var direction = SDPUtils.getDirection(mediaSection, sessionpart); - var remoteMsid = SDPUtils.parseMsid(mediaSection); + // also shim pc.getLocalStreams when addTrack is shimmed + // to return the original streams. + var origGetLocalStreams = window.RTCPeerConnection.prototype.getLocalStreams; + window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() { + var _this11 = this; - var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier(); + var nativeStreams = origGetLocalStreams.apply(this); + this._reverseStreams = this._reverseStreams || {}; + return nativeStreams.map(function (stream) { + return _this11._reverseStreams[stream.id]; + }); + }; - // Reject datachannels which are not implemented yet. - if (kind === 'application' && protocol === 'DTLS/SCTP') { - self.transceivers[sdpMLineIndex] = { - mid: mid, - isDatachannel: true - }; - return; - } + var origAddStream = window.RTCPeerConnection.prototype.addStream; + window.RTCPeerConnection.prototype.addStream = function addStream(stream) { + var _this12 = this; - var transceiver; - var iceGatherer; - var iceTransport; - var dtlsTransport; - var rtpReceiver; - var sendEncodingParameters; - var recvEncodingParameters; - var localCapabilities; + this._streams = this._streams || {}; + this._reverseStreams = this._reverseStreams || {}; - var track; - // FIXME: ensure the mediaSection has rtcp-mux set. - var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection); - var remoteIceParameters; - var remoteDtlsParameters; - if (!rejected) { - remoteIceParameters = SDPUtils.getIceParameters(mediaSection, - sessionpart); - remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, - sessionpart); - remoteDtlsParameters.role = 'client'; + stream.getTracks().forEach(function (track) { + var alreadyExists = _this12.getSenders().find(function (s) { + return s.track === track; + }); + if (alreadyExists) { + throw new DOMException('Track already exists.', 'InvalidAccessError'); } - recvEncodingParameters = - SDPUtils.parseRtpEncodingParameters(mediaSection); - - var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection); - - var isComplete = SDPUtils.matchPrefix(mediaSection, - 'a=end-of-candidates', sessionpart).length > 0; - var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:') - .map(function(cand) { - return SDPUtils.parseCandidate(cand); - }) - .filter(function(cand) { - return cand.component === 1; - }); + }); + // Add identity mapping for consistency with addTrack. + // Unless this is being used with a stream from addTrack. + if (!this._reverseStreams[stream.id]) { + var newStream = new window.MediaStream(stream.getTracks()); + this._streams[stream.id] = newStream; + this._reverseStreams[newStream.id] = stream; + stream = newStream; + } + origAddStream.apply(this, [stream]); + }; - // Check if we can use BUNDLE and dispose transports. - if ((description.type === 'offer' || description.type === 'answer') && - !rejected && usingBundle && sdpMLineIndex > 0 && - self.transceivers[sdpMLineIndex]) { - self._disposeIceAndDtlsTransports(sdpMLineIndex); - self.transceivers[sdpMLineIndex].iceGatherer = - self.transceivers[0].iceGatherer; - self.transceivers[sdpMLineIndex].iceTransport = - self.transceivers[0].iceTransport; - self.transceivers[sdpMLineIndex].dtlsTransport = - self.transceivers[0].dtlsTransport; - if (self.transceivers[sdpMLineIndex].rtpSender) { - self.transceivers[sdpMLineIndex].rtpSender.setTransport( - self.transceivers[0].dtlsTransport); - } - if (self.transceivers[sdpMLineIndex].rtpReceiver) { - self.transceivers[sdpMLineIndex].rtpReceiver.setTransport( - self.transceivers[0].dtlsTransport); - } - } - if (description.type === 'offer' && !rejected) { - transceiver = self.transceivers[sdpMLineIndex] || - self._createTransceiver(kind); - transceiver.mid = mid; + var origRemoveStream = window.RTCPeerConnection.prototype.removeStream; + window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { + this._streams = this._streams || {}; + this._reverseStreams = this._reverseStreams || {}; - if (!transceiver.iceGatherer) { - transceiver.iceGatherer = self._createIceGatherer(sdpMLineIndex, - usingBundle); - } + origRemoveStream.apply(this, [this._streams[stream.id] || stream]); + delete this._reverseStreams[this._streams[stream.id] ? this._streams[stream.id].id : stream.id]; + delete this._streams[stream.id]; + }; - if (cands.length && transceiver.iceTransport.state === 'new') { - if (isComplete && (!usingBundle || sdpMLineIndex === 0)) { - transceiver.iceTransport.setRemoteCandidates(cands); - } else { - cands.forEach(function(candidate) { - maybeAddCandidate(transceiver.iceTransport, candidate); - }); - } - } + window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) { + var _this13 = this; - localCapabilities = window.RTCRtpReceiver.getCapabilities(kind); + if (this.signalingState === 'closed') { + throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError'); + } + var streams = [].slice.call(arguments, 1); + if (streams.length !== 1 || !streams[0].getTracks().find(function (t) { + return t === track; + })) { + // this is not fully correct but all we can manage without + // [[associated MediaStreams]] internal slot. + throw new DOMException('The adapter.js addTrack polyfill only supports a single ' + ' stream which is associated with the specified track.', 'NotSupportedError'); + } - // filter RTX until additional stuff needed for RTX is implemented - // in adapter.js - if (edgeVersion < 15019) { - localCapabilities.codecs = localCapabilities.codecs.filter( - function(codec) { - return codec.name !== 'rtx'; - }); - } + var alreadyExists = this.getSenders().find(function (s) { + return s.track === track; + }); + if (alreadyExists) { + throw new DOMException('Track already exists.', 'InvalidAccessError'); + } - sendEncodingParameters = transceiver.sendEncodingParameters || [{ - ssrc: (2 * sdpMLineIndex + 2) * 1001 - }]; + this._streams = this._streams || {}; + this._reverseStreams = this._reverseStreams || {}; + var oldStream = this._streams[stream.id]; + if (oldStream) { + // this is using odd Chrome behaviour, use with caution: + // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815 + // Note: we rely on the high-level addTrack/dtmf shim to + // create the sender with a dtmf sender. + oldStream.addTrack(track); + + // Trigger ONN async. + Promise.resolve().then(function () { + _this13.dispatchEvent(new Event('negotiationneeded')); + }); + } else { + var newStream = new window.MediaStream([track]); + this._streams[stream.id] = newStream; + this._reverseStreams[newStream.id] = stream; + this.addStream(newStream); + } + return this.getSenders().find(function (s) { + return s.track === track; + }); + }; - var isNewTrack = false; - if (direction === 'sendrecv' || direction === 'sendonly') { - isNewTrack = !transceiver.rtpReceiver; - rtpReceiver = transceiver.rtpReceiver || - new window.RTCRtpReceiver(transceiver.dtlsTransport, kind); + // replace the internal stream id with the external one and + // vice versa. + function replaceInternalStreamId(pc, description) { + var sdp = description.sdp; + Object.keys(pc._reverseStreams || []).forEach(function (internalId) { + var externalStream = pc._reverseStreams[internalId]; + var internalStream = pc._streams[externalStream.id]; + sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id); + }); + return new RTCSessionDescription({ + type: description.type, + sdp: sdp + }); + } + function replaceExternalStreamId(pc, description) { + var sdp = description.sdp; + Object.keys(pc._reverseStreams || []).forEach(function (internalId) { + var externalStream = pc._reverseStreams[internalId]; + var internalStream = pc._streams[externalStream.id]; + sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id); + }); + return new RTCSessionDescription({ + type: description.type, + sdp: sdp + }); + } + ['createOffer', 'createAnswer'].forEach(function (method) { + var nativeMethod = window.RTCPeerConnection.prototype[method]; + var methodObj = _defineProperty({}, method, function () { + var _this14 = this; - if (isNewTrack) { - var stream; - track = rtpReceiver.track; - // FIXME: does not work with Plan B. - if (remoteMsid) { - if (!streams[remoteMsid.stream]) { - streams[remoteMsid.stream] = new window.MediaStream(); - Object.defineProperty(streams[remoteMsid.stream], 'id', { - get: function() { - return remoteMsid.stream; - } - }); - } - Object.defineProperty(track, 'id', { - get: function() { - return remoteMsid.track; - } - }); - stream = streams[remoteMsid.stream]; - } else { - if (!streams.default) { - streams.default = new window.MediaStream(); - } - stream = streams.default; - } - stream.addTrack(track); - receiverList.push([track, rtpReceiver, stream]); + var args = arguments; + var isLegacyCall = arguments.length && typeof arguments[0] === 'function'; + if (isLegacyCall) { + return nativeMethod.apply(this, [function (description) { + var desc = replaceInternalStreamId(_this14, description); + args[0].apply(null, [desc]); + }, function (err) { + if (args[1]) { + args[1].apply(null, err); } - } + }, arguments[2]]); + } + return nativeMethod.apply(this, arguments).then(function (description) { + return replaceInternalStreamId(_this14, description); + }); + }); + window.RTCPeerConnection.prototype[method] = methodObj[method]; + }); - transceiver.localCapabilities = localCapabilities; - transceiver.remoteCapabilities = remoteCapabilities; - transceiver.rtpReceiver = rtpReceiver; - transceiver.rtcpParameters = rtcpParameters; - transceiver.sendEncodingParameters = sendEncodingParameters; - transceiver.recvEncodingParameters = recvEncodingParameters; + var origSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription; + window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() { + if (!arguments.length || !arguments[0].type) { + return origSetLocalDescription.apply(this, arguments); + } + arguments[0] = replaceExternalStreamId(this, arguments[0]); + return origSetLocalDescription.apply(this, arguments); + }; - // Start the RTCRtpReceiver now. The RTPSender is started in - // setLocalDescription. - self._transceive(self.transceivers[sdpMLineIndex], - false, - isNewTrack); - } else if (description.type === 'answer' && !rejected) { - transceiver = self.transceivers[sdpMLineIndex]; - iceGatherer = transceiver.iceGatherer; - iceTransport = transceiver.iceTransport; - dtlsTransport = transceiver.dtlsTransport; - rtpReceiver = transceiver.rtpReceiver; - sendEncodingParameters = transceiver.sendEncodingParameters; - localCapabilities = transceiver.localCapabilities; + // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier - self.transceivers[sdpMLineIndex].recvEncodingParameters = - recvEncodingParameters; - self.transceivers[sdpMLineIndex].remoteCapabilities = - remoteCapabilities; - self.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters; + var origLocalDescription = Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype, 'localDescription'); + Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', { + get: function get() { + var description = origLocalDescription.get.apply(this); + if (description.type === '') { + return description; + } + return replaceInternalStreamId(this, description); + } + }); - if (cands.length && iceTransport.state === 'new') { - if ((isIceLite || isComplete) && - (!usingBundle || sdpMLineIndex === 0)) { - iceTransport.setRemoteCandidates(cands); - } else { - cands.forEach(function(candidate) { - maybeAddCandidate(transceiver.iceTransport, candidate); - }); - } - } + window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) { + var _this15 = this; - if (!usingBundle || sdpMLineIndex === 0) { - if (iceTransport.state === 'new') { - iceTransport.start(iceGatherer, remoteIceParameters, - 'controlling'); - } - if (dtlsTransport.state === 'new') { - dtlsTransport.start(remoteDtlsParameters); - } - } + if (this.signalingState === 'closed') { + throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError'); + } + // We can not yet check for sender instanceof RTCRtpSender + // since we shim RTPSender. So we check if sender._pc is set. + if (!sender._pc) { + throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.', 'TypeError'); + } + var isLocal = sender._pc === this; + if (!isLocal) { + throw new DOMException('Sender was not created by this connection.', 'InvalidAccessError'); + } - self._transceive(transceiver, - direction === 'sendrecv' || direction === 'recvonly', - direction === 'sendrecv' || direction === 'sendonly'); + // Search for the native stream the senders track belongs to. + this._streams = this._streams || {}; + var stream = void 0; + Object.keys(this._streams).forEach(function (streamid) { + var hasTrack = _this15._streams[streamid].getTracks().find(function (track) { + return sender.track === track; + }); + if (hasTrack) { + stream = _this15._streams[streamid]; + } + }); - if (rtpReceiver && - (direction === 'sendrecv' || direction === 'sendonly')) { - track = rtpReceiver.track; - if (remoteMsid) { - if (!streams[remoteMsid.stream]) { - streams[remoteMsid.stream] = new window.MediaStream(); - } - streams[remoteMsid.stream].addTrack(track); - receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]); - } else { - if (!streams.default) { - streams.default = new window.MediaStream(); - } - streams.default.addTrack(track); - receiverList.push([track, rtpReceiver, streams.default]); - } - } else { - // FIXME: actually the receiver should be created later. - delete transceiver.rtpReceiver; - } + if (stream) { + if (stream.getTracks().length === 1) { + // if this is the last track of the stream, remove the stream. This + // takes care of any shimmed _senders. + this.removeStream(this._reverseStreams[stream.id]); + } else { + // relying on the same odd chrome behaviour as above. + stream.removeTrack(sender.track); } + this.dispatchEvent(new Event('negotiationneeded')); + } + }; +} + +function shimPeerConnection(window) { + var browserDetails = utils.detectBrowser(window); + + if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) { + // very basic support for old versions. + window.RTCPeerConnection = window.webkitRTCPeerConnection; + } + if (!window.RTCPeerConnection) { + return; + } + + // shim implicit creation of RTCSessionDescription/RTCIceCandidate + if (browserDetails.version < 53) { + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) { + var nativeMethod = window.RTCPeerConnection.prototype[method]; + var methodObj = _defineProperty({}, method, function () { + arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]); + return nativeMethod.apply(this, arguments); + }); + window.RTCPeerConnection.prototype[method] = methodObj[method]; }); + } - if (this._dtlsRole === undefined) { - this._dtlsRole = description.type === 'offer' ? 'active' : 'passive'; + // support for addIceCandidate(null or undefined) + var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate; + window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() { + if (!arguments[0]) { + if (arguments[1]) { + arguments[1].apply(null); + } + return Promise.resolve(); } + // Firefox 68+ emits and processes {candidate: "", ...}, ignore + // in older versions. Native support planned for Chrome M77. + if (browserDetails.version < 78 && arguments[0] && arguments[0].candidate === '') { + return Promise.resolve(); + } + return nativeAddIceCandidate.apply(this, arguments); + }; +} - this.remoteDescription = { - type: description.type, - sdp: description.sdp - }; - switch (description.type) { - case 'offer': - this._updateSignalingState('have-remote-offer'); - break; - case 'answer': - this._updateSignalingState('stable'); - break; - default: - throw new TypeError('unsupported type "' + description.type + - '"'); +function fixNegotiationNeeded(window) { + utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) { + var pc = e.target; + if (pc.signalingState !== 'stable') { + return; } - Object.keys(streams).forEach(function(sid) { - var stream = streams[sid]; - if (stream.getTracks().length) { - if (self.remoteStreams.indexOf(stream) === -1) { - self.remoteStreams.push(stream); - var event = new Event('addstream'); - event.stream = stream; - window.setTimeout(function() { - self.dispatchEvent(event); - if (typeof self.onaddstream === 'function') { - self.onaddstream(event); - } - }); - } + return e; + }); +} - receiverList.forEach(function(item) { - var track = item[0]; - var receiver = item[1]; - if (stream.id !== item[2].id) { - return; - } - var trackEvent = new Event('track'); - trackEvent.track = track; - trackEvent.receiver = receiver; - trackEvent.transceiver = {receiver: receiver}; - trackEvent.streams = [stream]; - window.setTimeout(function() { - self.dispatchEvent(trackEvent); - if (typeof self.ontrack === 'function') { - self.ontrack(trackEvent); - } - }); - }); - } - }); +},{"../utils.js":15,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(require,module,exports){ +/* + * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - // check whether addIceCandidate({}) was called within four seconds after - // setRemoteDescription. - window.setTimeout(function() { - if (!(self && self.transceivers)) { - return; - } - self.transceivers.forEach(function(transceiver) { - if (transceiver.iceTransport && - transceiver.iceTransport.state === 'new' && - transceiver.iceTransport.getRemoteCandidates().length > 0) { - console.warn('Timeout for addRemoteCandidate. Consider sending ' + - 'an end-of-candidates notification'); - transceiver.iceTransport.addRemoteCandidate({}); +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.shimGetDisplayMedia = shimGetDisplayMedia; +function shimGetDisplayMedia(window, getSourceId) { + if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) { + return; + } + if (!window.navigator.mediaDevices) { + return; + } + // getSourceId is a function that returns a promise resolving with + // the sourceId of the screen/window/tab to be shared. + if (typeof getSourceId !== 'function') { + console.error('shimGetDisplayMedia: getSourceId argument is not ' + 'a function'); + return; + } + window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) { + return getSourceId(constraints).then(function (sourceId) { + var widthSpecified = constraints.video && constraints.video.width; + var heightSpecified = constraints.video && constraints.video.height; + var frameRateSpecified = constraints.video && constraints.video.frameRate; + constraints.video = { + mandatory: { + chromeMediaSource: 'desktop', + chromeMediaSourceId: sourceId, + maxFrameRate: frameRateSpecified || 3 } - }); - }, 4000); - - return new Promise(function(resolve) { - if (args.length > 1 && typeof args[1] === 'function') { - args[1].apply(null); - } - resolve(); - }); - }; - - RTCPeerConnection.prototype.close = function() { - this.transceivers.forEach(function(transceiver) { - /* not yet - if (transceiver.iceGatherer) { - transceiver.iceGatherer.close(); - } - */ - if (transceiver.iceTransport) { - transceiver.iceTransport.stop(); - } - if (transceiver.dtlsTransport) { - transceiver.dtlsTransport.stop(); - } - if (transceiver.rtpSender) { - transceiver.rtpSender.stop(); + }; + if (widthSpecified) { + constraints.video.mandatory.maxWidth = widthSpecified; } - if (transceiver.rtpReceiver) { - transceiver.rtpReceiver.stop(); + if (heightSpecified) { + constraints.video.mandatory.maxHeight = heightSpecified; } + return window.navigator.mediaDevices.getUserMedia(constraints); }); - // FIXME: clean up tracks, local streams, remote streams, etc - this._updateSignalingState('closed'); }; +} - // Update the signaling state. - RTCPeerConnection.prototype._updateSignalingState = function(newState) { - this.signalingState = newState; - var event = new Event('signalingstatechange'); - this.dispatchEvent(event); - if (typeof this.onsignalingstatechange === 'function') { - this.onsignalingstatechange(event); - } - }; +},{}],5:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - // Determine whether to fire the negotiationneeded event. - RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() { - var self = this; - if (this.signalingState !== 'stable' || this.needNegotiation === true) { - return; - } - this.needNegotiation = true; - window.setTimeout(function() { - if (self.needNegotiation === false) { - return; - } - self.needNegotiation = false; - var event = new Event('negotiationneeded'); - self.dispatchEvent(event); - if (typeof self.onnegotiationneeded === 'function') { - self.onnegotiationneeded(event); - } - }, 0); - }; +Object.defineProperty(exports, "__esModule", { + value: true +}); - // Update the connection state. - RTCPeerConnection.prototype._updateConnectionState = function() { - var newState; - var states = { - 'new': 0, - closed: 0, - connecting: 0, - checking: 0, - connected: 0, - completed: 0, - disconnected: 0, - failed: 0 - }; - this.transceivers.forEach(function(transceiver) { - states[transceiver.iceTransport.state]++; - states[transceiver.dtlsTransport.state]++; - }); - // ICETransport.completed and connected are the same for this purpose. - states.connected += states.completed; +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; - newState = 'new'; - if (states.failed > 0) { - newState = 'failed'; - } else if (states.connecting > 0 || states.checking > 0) { - newState = 'connecting'; - } else if (states.disconnected > 0) { - newState = 'disconnected'; - } else if (states.new > 0) { - newState = 'new'; - } else if (states.connected > 0 || states.completed > 0) { - newState = 'connected'; - } +exports.shimGetUserMedia = shimGetUserMedia; - if (newState !== this.iceConnectionState) { - this.iceConnectionState = newState; - var event = new Event('iceconnectionstatechange'); - this.dispatchEvent(event); - if (typeof this.oniceconnectionstatechange === 'function') { - this.oniceconnectionstatechange(event); - } - } - }; +var _utils = require('../utils.js'); - RTCPeerConnection.prototype.createOffer = function() { - var self = this; - var args = arguments; +var utils = _interopRequireWildcard(_utils); - var offerOptions; - if (arguments.length === 1 && typeof arguments[0] !== 'function') { - offerOptions = arguments[0]; - } else if (arguments.length === 3) { - offerOptions = arguments[2]; - } +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } - var numAudioTracks = this.transceivers.filter(function(t) { - return t.kind === 'audio'; - }).length; - var numVideoTracks = this.transceivers.filter(function(t) { - return t.kind === 'video'; - }).length; +var logging = utils.log; - // Determine number of audio and video tracks we need to send/recv. - if (offerOptions) { - // Reject Chrome legacy constraints. - if (offerOptions.mandatory || offerOptions.optional) { - throw new TypeError( - 'Legacy mandatory/optional constraints not supported.'); +function shimGetUserMedia(window) { + var navigator = window && window.navigator; + + if (!navigator.mediaDevices) { + return; + } + + var browserDetails = utils.detectBrowser(window); + + var constraintsToChrome_ = function constraintsToChrome_(c) { + if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) !== 'object' || c.mandatory || c.optional) { + return c; + } + var cc = {}; + Object.keys(c).forEach(function (key) { + if (key === 'require' || key === 'advanced' || key === 'mediaSource') { + return; } - if (offerOptions.offerToReceiveAudio !== undefined) { - if (offerOptions.offerToReceiveAudio === true) { - numAudioTracks = 1; - } else if (offerOptions.offerToReceiveAudio === false) { - numAudioTracks = 0; - } else { - numAudioTracks = offerOptions.offerToReceiveAudio; - } + var r = _typeof(c[key]) === 'object' ? c[key] : { ideal: c[key] }; + if (r.exact !== undefined && typeof r.exact === 'number') { + r.min = r.max = r.exact; } - if (offerOptions.offerToReceiveVideo !== undefined) { - if (offerOptions.offerToReceiveVideo === true) { - numVideoTracks = 1; - } else if (offerOptions.offerToReceiveVideo === false) { - numVideoTracks = 0; + var oldname_ = function oldname_(prefix, name) { + if (prefix) { + return prefix + name.charAt(0).toUpperCase() + name.slice(1); + } + return name === 'deviceId' ? 'sourceId' : name; + }; + if (r.ideal !== undefined) { + cc.optional = cc.optional || []; + var oc = {}; + if (typeof r.ideal === 'number') { + oc[oldname_('min', key)] = r.ideal; + cc.optional.push(oc); + oc = {}; + oc[oldname_('max', key)] = r.ideal; + cc.optional.push(oc); } else { - numVideoTracks = offerOptions.offerToReceiveVideo; + oc[oldname_('', key)] = r.ideal; + cc.optional.push(oc); } } - } - - this.transceivers.forEach(function(transceiver) { - if (transceiver.kind === 'audio') { - numAudioTracks--; - if (numAudioTracks < 0) { - transceiver.wantReceive = false; - } - } else if (transceiver.kind === 'video') { - numVideoTracks--; - if (numVideoTracks < 0) { - transceiver.wantReceive = false; - } + if (r.exact !== undefined && typeof r.exact !== 'number') { + cc.mandatory = cc.mandatory || {}; + cc.mandatory[oldname_('', key)] = r.exact; + } else { + ['min', 'max'].forEach(function (mix) { + if (r[mix] !== undefined) { + cc.mandatory = cc.mandatory || {}; + cc.mandatory[oldname_(mix, key)] = r[mix]; + } + }); } }); - - // Create M-lines for recvonly streams. - while (numAudioTracks > 0 || numVideoTracks > 0) { - if (numAudioTracks > 0) { - this._createTransceiver('audio'); - numAudioTracks--; - } - if (numVideoTracks > 0) { - this._createTransceiver('video'); - numVideoTracks--; - } + if (c.advanced) { + cc.optional = (cc.optional || []).concat(c.advanced); } + return cc; + }; - var sdp = SDPUtils.writeSessionBoilerplate(this._sdpSessionId, - this._sdpSessionVersion++); - this.transceivers.forEach(function(transceiver, sdpMLineIndex) { - // For each track, create an ice gatherer, ice transport, - // dtls transport, potentially rtpsender and rtpreceiver. - var track = transceiver.track; - var kind = transceiver.kind; - var mid = SDPUtils.generateIdentifier(); - transceiver.mid = mid; - - if (!transceiver.iceGatherer) { - transceiver.iceGatherer = self._createIceGatherer(sdpMLineIndex, - self.usingBundle); - } + var shimConstraints_ = function shimConstraints_(constraints, func) { + if (browserDetails.version >= 61) { + return func(constraints); + } + constraints = JSON.parse(JSON.stringify(constraints)); + if (constraints && _typeof(constraints.audio) === 'object') { + var remap = function remap(obj, a, b) { + if (a in obj && !(b in obj)) { + obj[b] = obj[a]; + delete obj[a]; + } + }; + constraints = JSON.parse(JSON.stringify(constraints)); + remap(constraints.audio, 'autoGainControl', 'googAutoGainControl'); + remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression'); + constraints.audio = constraintsToChrome_(constraints.audio); + } + if (constraints && _typeof(constraints.video) === 'object') { + // Shim facingMode for mobile & surface pro. + var face = constraints.video.facingMode; + face = face && ((typeof face === 'undefined' ? 'undefined' : _typeof(face)) === 'object' ? face : { ideal: face }); + var getSupportedFacingModeLies = browserDetails.version < 66; - var localCapabilities = window.RTCRtpSender.getCapabilities(kind); - // filter RTX until additional stuff needed for RTX is implemented - // in adapter.js - if (edgeVersion < 15019) { - localCapabilities.codecs = localCapabilities.codecs.filter( - function(codec) { - return codec.name !== 'rtx'; - }); - } - localCapabilities.codecs.forEach(function(codec) { - // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552 - // by adding level-asymmetry-allowed=1 - if (codec.name === 'H264' && - codec.parameters['level-asymmetry-allowed'] === undefined) { - codec.parameters['level-asymmetry-allowed'] = '1'; + if (face && (face.exact === 'user' || face.exact === 'environment' || face.ideal === 'user' || face.ideal === 'environment') && !(navigator.mediaDevices.getSupportedConstraints && navigator.mediaDevices.getSupportedConstraints().facingMode && !getSupportedFacingModeLies)) { + delete constraints.video.facingMode; + var matches = void 0; + if (face.exact === 'environment' || face.ideal === 'environment') { + matches = ['back', 'rear']; + } else if (face.exact === 'user' || face.ideal === 'user') { + matches = ['front']; } - }); - - // generate an ssrc now, to be used later in rtpSender.send - var sendEncodingParameters = transceiver.sendEncodingParameters || [{ - ssrc: (2 * sdpMLineIndex + 1) * 1001 - }]; - if (track) { - // add RTX - if (edgeVersion >= 15019 && kind === 'video' && - !sendEncodingParameters[0].rtx) { - sendEncodingParameters[0].rtx = { - ssrc: sendEncodingParameters[0].ssrc + 1 - }; + if (matches) { + // Look for matches in label, or use last cam for back (typical). + return navigator.mediaDevices.enumerateDevices().then(function (devices) { + devices = devices.filter(function (d) { + return d.kind === 'videoinput'; + }); + var dev = devices.find(function (d) { + return matches.some(function (match) { + return d.label.toLowerCase().includes(match); + }); + }); + if (!dev && devices.length && matches.includes('back')) { + dev = devices[devices.length - 1]; // more likely the back cam + } + if (dev) { + constraints.video.deviceId = face.exact ? { exact: dev.deviceId } : { ideal: dev.deviceId }; + } + constraints.video = constraintsToChrome_(constraints.video); + logging('chrome: ' + JSON.stringify(constraints)); + return func(constraints); + }); } } + constraints.video = constraintsToChrome_(constraints.video); + } + logging('chrome: ' + JSON.stringify(constraints)); + return func(constraints); + }; - if (transceiver.wantReceive) { - transceiver.rtpReceiver = new window.RTCRtpReceiver( - transceiver.dtlsTransport, kind); + var shimError_ = function shimError_(e) { + if (browserDetails.version >= 64) { + return e; + } + return { + name: { + PermissionDeniedError: 'NotAllowedError', + PermissionDismissedError: 'NotAllowedError', + InvalidStateError: 'NotAllowedError', + DevicesNotFoundError: 'NotFoundError', + ConstraintNotSatisfiedError: 'OverconstrainedError', + TrackStartError: 'NotReadableError', + MediaDeviceFailedDueToShutdown: 'NotAllowedError', + MediaDeviceKillSwitchOn: 'NotAllowedError', + TabCaptureError: 'AbortError', + ScreenCaptureError: 'AbortError', + DeviceCaptureError: 'AbortError' + }[e.name] || e.name, + message: e.message, + constraint: e.constraint || e.constraintName, + toString: function toString() { + return this.name + (this.message && ': ') + this.message; } + }; + }; - transceiver.localCapabilities = localCapabilities; - transceiver.sendEncodingParameters = sendEncodingParameters; + var getUserMedia_ = function getUserMedia_(constraints, onSuccess, onError) { + shimConstraints_(constraints, function (c) { + navigator.webkitGetUserMedia(c, onSuccess, function (e) { + if (onError) { + onError(shimError_(e)); + } + }); }); + }; + navigator.getUserMedia = getUserMedia_.bind(navigator); + + // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia + // function which returns a Promise, it does not accept spec-style + // constraints. + if (navigator.mediaDevices.getUserMedia) { + var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function (cs) { + return shimConstraints_(cs, function (c) { + return origGetUserMedia(c).then(function (stream) { + if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) { + stream.getTracks().forEach(function (track) { + track.stop(); + }); + throw new DOMException('', 'NotFoundError'); + } + return stream; + }, function (e) { + return Promise.reject(shimError_(e)); + }); + }); + }; + } +} - // always offer BUNDLE and dispose on return if not supported. - if (this._config.bundlePolicy !== 'max-compat') { - sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) { - return t.mid; - }).join(' ') + '\r\n'; - } - sdp += 'a=ice-options:trickle\r\n'; +},{"../utils.js":15}],6:[function(require,module,exports){ +/* + * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - this.transceivers.forEach(function(transceiver, sdpMLineIndex) { - sdp += writeMediaSection(transceiver, transceiver.localCapabilities, - 'offer', transceiver.stream, self._dtlsRole); - sdp += 'a=rtcp-rsize\r\n'; +Object.defineProperty(exports, "__esModule", { + value: true +}); - if (transceiver.iceGatherer && self.iceGatheringState !== 'new' && - (sdpMLineIndex === 0 || !self.usingBundle)) { - transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) { - cand.component = 1; - sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n'; - }); +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; - if (transceiver.iceGatherer.state === 'completed') { - sdp += 'a=end-of-candidates\r\n'; - } - } - }); +exports.shimRTCIceCandidate = shimRTCIceCandidate; +exports.shimMaxMessageSize = shimMaxMessageSize; +exports.shimSendThrowTypeError = shimSendThrowTypeError; +exports.shimConnectionState = shimConnectionState; +exports.removeAllowExtmapMixed = removeAllowExtmapMixed; - var desc = new window.RTCSessionDescription({ - type: 'offer', - sdp: sdp - }); - return new Promise(function(resolve) { - if (args.length > 0 && typeof args[0] === 'function') { - args[0].apply(null, [desc]); - resolve(); - return; - } - resolve(desc); - }); - }; +var _sdp = require('sdp'); - RTCPeerConnection.prototype.createAnswer = function() { - var self = this; - var args = arguments; +var _sdp2 = _interopRequireDefault(_sdp); - var sdp = SDPUtils.writeSessionBoilerplate(this._sdpSessionId, - this._sdpSessionVersion++); - if (this.usingBundle) { - sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) { - return t.mid; - }).join(' ') + '\r\n'; +var _utils = require('./utils'); + +var utils = _interopRequireWildcard(_utils); + +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +function shimRTCIceCandidate(window) { + // foundation is arbitrarily chosen as an indicator for full support for + // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface + if (!window.RTCIceCandidate || window.RTCIceCandidate && 'foundation' in window.RTCIceCandidate.prototype) { + return; + } + + var NativeRTCIceCandidate = window.RTCIceCandidate; + window.RTCIceCandidate = function RTCIceCandidate(args) { + // Remove the a= which shouldn't be part of the candidate string. + if ((typeof args === 'undefined' ? 'undefined' : _typeof(args)) === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) { + args = JSON.parse(JSON.stringify(args)); + args.candidate = args.candidate.substr(2); } - var mediaSectionsInOffer = SDPUtils.splitSections( - this.remoteDescription.sdp).length - 1; - this.transceivers.forEach(function(transceiver, sdpMLineIndex) { - if (sdpMLineIndex + 1 > mediaSectionsInOffer) { - return; - } - if (transceiver.isDatachannel) { - sdp += 'm=application 0 DTLS/SCTP 5000\r\n' + - 'c=IN IP4 0.0.0.0\r\n' + - 'a=mid:' + transceiver.mid + '\r\n'; - return; - } - // FIXME: look at direction. - if (transceiver.stream) { - var localTrack; - if (transceiver.kind === 'audio') { - localTrack = transceiver.stream.getAudioTracks()[0]; - } else if (transceiver.kind === 'video') { - localTrack = transceiver.stream.getVideoTracks()[0]; - } - if (localTrack) { - // add RTX - if (edgeVersion >= 15019 && transceiver.kind === 'video' && - !transceiver.sendEncodingParameters[0].rtx) { - transceiver.sendEncodingParameters[0].rtx = { - ssrc: transceiver.sendEncodingParameters[0].ssrc + 1 - }; - } - } - } + if (args.candidate && args.candidate.length) { + // Augment the native candidate with the parsed fields. + var nativeCandidate = new NativeRTCIceCandidate(args); + var parsedCandidate = _sdp2.default.parseCandidate(args.candidate); + var augmentedCandidate = Object.assign(nativeCandidate, parsedCandidate); - // Calculate intersection of capabilities. - var commonCapabilities = getCommonCapabilities( - transceiver.localCapabilities, - transceiver.remoteCapabilities); + // Add a serializer that does not serialize the extra attributes. + augmentedCandidate.toJSON = function toJSON() { + return { + candidate: augmentedCandidate.candidate, + sdpMid: augmentedCandidate.sdpMid, + sdpMLineIndex: augmentedCandidate.sdpMLineIndex, + usernameFragment: augmentedCandidate.usernameFragment + }; + }; + return augmentedCandidate; + } + return new NativeRTCIceCandidate(args); + }; + window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype; + + // Hook up the augmented candidate in onicecandidate and + // addEventListener('icecandidate', ...) + utils.wrapPeerConnectionEvent(window, 'icecandidate', function (e) { + if (e.candidate) { + Object.defineProperty(e, 'candidate', { + value: new window.RTCIceCandidate(e.candidate), + writable: 'false' + }); + } + return e; + }); +} - var hasRtx = commonCapabilities.codecs.filter(function(c) { - return c.name.toLowerCase() === 'rtx'; - }).length; - if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) { - delete transceiver.sendEncodingParameters[0].rtx; - } +function shimMaxMessageSize(window) { + if (!window.RTCPeerConnection) { + return; + } + var browserDetails = utils.detectBrowser(window); - sdp += writeMediaSection(transceiver, commonCapabilities, - 'answer', transceiver.stream, self._dtlsRole); - if (transceiver.rtcpParameters && - transceiver.rtcpParameters.reducedSize) { - sdp += 'a=rtcp-rsize\r\n'; + if (!('sctp' in window.RTCPeerConnection.prototype)) { + Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', { + get: function get() { + return typeof this._sctp === 'undefined' ? null : this._sctp; } }); + } - var desc = new window.RTCSessionDescription({ - type: 'answer', - sdp: sdp - }); - return new Promise(function(resolve) { - if (args.length > 0 && typeof args[0] === 'function') { - args[0].apply(null, [desc]); - resolve(); - return; - } - resolve(desc); + var sctpInDescription = function sctpInDescription(description) { + if (!description || !description.sdp) { + return false; + } + var sections = _sdp2.default.splitSections(description.sdp); + sections.shift(); + return sections.some(function (mediaSection) { + var mLine = _sdp2.default.parseMLine(mediaSection); + return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1; }); }; - RTCPeerConnection.prototype.addIceCandidate = function(candidate) { - var err; - var sections; - if (!candidate || candidate.candidate === '') { - for (var j = 0; j < this.transceivers.length; j++) { - if (this.transceivers[j].isDatachannel) { - continue; - } - this.transceivers[j].iceTransport.addRemoteCandidate({}); - sections = SDPUtils.splitSections(this.remoteDescription.sdp); - sections[j + 1] += 'a=end-of-candidates\r\n'; - this.remoteDescription.sdp = sections.join(''); - if (this.usingBundle) { - break; - } - } - } else if (!(candidate.sdpMLineIndex !== undefined || candidate.sdpMid)) { - throw new TypeError('sdpMLineIndex or sdpMid required'); - } else if (!this.remoteDescription) { - err = new Error('Can not add ICE candidate without ' + - 'a remote description'); - err.name = 'InvalidStateError'; - } else { - var sdpMLineIndex = candidate.sdpMLineIndex; - if (candidate.sdpMid) { - for (var i = 0; i < this.transceivers.length; i++) { - if (this.transceivers[i].mid === candidate.sdpMid) { - sdpMLineIndex = i; - break; - } - } - } - var transceiver = this.transceivers[sdpMLineIndex]; - if (transceiver) { - if (transceiver.isDatachannel) { - return Promise.resolve(); - } - var cand = Object.keys(candidate.candidate).length > 0 ? - SDPUtils.parseCandidate(candidate.candidate) : {}; - // Ignore Chrome's invalid candidates since Edge does not like them. - if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) { - return Promise.resolve(); - } - // Ignore RTCP candidates, we assume RTCP-MUX. - if (cand.component && cand.component !== 1) { - return Promise.resolve(); - } - // when using bundle, avoid adding candidates to the wrong - // ice transport. And avoid adding candidates added in the SDP. - if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 && - transceiver.iceTransport !== this.transceivers[0].iceTransport)) { - if (!maybeAddCandidate(transceiver.iceTransport, cand)) { - err = new Error('Can not add ICE candidate'); - err.name = 'OperationError'; - } - } + var getRemoteFirefoxVersion = function getRemoteFirefoxVersion(description) { + // TODO: Is there a better solution for detecting Firefox? + var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/); + if (match === null || match.length < 2) { + return -1; + } + var version = parseInt(match[1], 10); + // Test for NaN (yes, this is ugly) + return version !== version ? -1 : version; + }; - if (!err) { - // update the remoteDescription. - var candidateString = candidate.candidate.trim(); - if (candidateString.indexOf('a=') === 0) { - candidateString = candidateString.substr(2); - } - sections = SDPUtils.splitSections(this.remoteDescription.sdp); - sections[sdpMLineIndex + 1] += 'a=' + - (cand.type ? candidateString : 'end-of-candidates') - + '\r\n'; - this.remoteDescription.sdp = sections.join(''); + var getCanSendMaxMessageSize = function getCanSendMaxMessageSize(remoteIsFirefox) { + // Every implementation we know can send at least 64 KiB. + // Note: Although Chrome is technically able to send up to 256 KiB, the + // data does not reach the other peer reliably. + // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419 + var canSendMaxMessageSize = 65536; + if (browserDetails.browser === 'firefox') { + if (browserDetails.version < 57) { + if (remoteIsFirefox === -1) { + // FF < 57 will send in 16 KiB chunks using the deprecated PPID + // fragmentation. + canSendMaxMessageSize = 16384; + } else { + // However, other FF (and RAWRTC) can reassemble PPID-fragmented + // messages. Thus, supporting ~2 GiB when sending. + canSendMaxMessageSize = 2147483637; } + } else if (browserDetails.version < 60) { + // Currently, all FF >= 57 will reset the remote maximum message size + // to the default value when a data channel is created at a later + // stage. :( + // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831 + canSendMaxMessageSize = browserDetails.version === 57 ? 65535 : 65536; } else { - err = new Error('Can not add ICE candidate'); - err.name = 'OperationError'; + // FF >= 60 supports sending ~2 GiB + canSendMaxMessageSize = 2147483637; } } - var args = arguments; - return new Promise(function(resolve, reject) { - if (err) { - if (args.length > 2 && typeof args[2] === 'function') { - args[2].apply(null, [err]); - } - reject(err); - } else { - if (args.length > 1 && typeof args[1] === 'function') { - args[1].apply(null); - } - resolve(); - } - }); + return canSendMaxMessageSize; }; - RTCPeerConnection.prototype.getStats = function() { - var promises = []; - this.transceivers.forEach(function(transceiver) { - ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', - 'dtlsTransport'].forEach(function(method) { - if (transceiver[method]) { - promises.push(transceiver[method].getStats()); - } - }); - }); - var cb = arguments.length > 1 && typeof arguments[1] === 'function' && - arguments[1]; - var fixStatsType = function(stat) { - return { - inboundrtp: 'inbound-rtp', - outboundrtp: 'outbound-rtp', - candidatepair: 'candidate-pair', - localcandidate: 'local-candidate', - remotecandidate: 'remote-candidate' - }[stat.type] || stat.type; - }; - return new Promise(function(resolve) { - // shim getStats with maplike support - var results = new Map(); - Promise.all(promises).then(function(res) { - res.forEach(function(result) { - Object.keys(result).forEach(function(id) { - result[id].type = fixStatsType(result[id]); - results.set(id, result[id]); - }); - }); - if (cb) { - cb.apply(null, results); - } - resolve(results); - }); - }); - }; - return RTCPeerConnection; -}; + var getMaxMessageSize = function getMaxMessageSize(description, remoteIsFirefox) { + // Note: 65536 bytes is the default value from the SDP spec. Also, + // every implementation we know supports receiving 65536 bytes. + var maxMessageSize = 65536; -},{"sdp":2}],2:[function(require,module,exports){ - /* eslint-env node */ -'use strict'; + // FF 57 has a slightly incorrect default remote max message size, so + // we need to adjust it here to avoid a failure when sending. + // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697 + if (browserDetails.browser === 'firefox' && browserDetails.version === 57) { + maxMessageSize = 65535; + } -// SDP helpers. -var SDPUtils = {}; + var match = _sdp2.default.matchPrefix(description.sdp, 'a=max-message-size:'); + if (match.length > 0) { + maxMessageSize = parseInt(match[0].substr(19), 10); + } else if (browserDetails.browser === 'firefox' && remoteIsFirefox !== -1) { + // If the maximum message size is not present in the remote SDP and + // both local and remote are Firefox, the remote peer can receive + // ~2 GiB. + maxMessageSize = 2147483637; + } + return maxMessageSize; + }; -// Generate an alphanumeric identifier for cname or mids. -// TODO: use UUIDs instead? https://gist.github.com/jed/982883 -SDPUtils.generateIdentifier = function() { - return Math.random().toString(36).substr(2, 10); -}; + var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription; + window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() { + this._sctp = null; + // Chrome decided to not expose .sctp in plan-b mode. + // As usual, adapter.js has to do an 'ugly worakaround' + // to cover up the mess. + if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) { + var _getConfiguration = this.getConfiguration(), + sdpSemantics = _getConfiguration.sdpSemantics; + + if (sdpSemantics === 'plan-b') { + Object.defineProperty(this, 'sctp', { + get: function get() { + return typeof this._sctp === 'undefined' ? null : this._sctp; + }, -// The RTCP CNAME used by all peerconnections from the same JS. -SDPUtils.localCName = SDPUtils.generateIdentifier(); + enumerable: true, + configurable: true + }); + } + } -// Splits SDP into lines, dealing with both CRLF and LF. -SDPUtils.splitLines = function(blob) { - return blob.trim().split('\n').map(function(line) { - return line.trim(); - }); -}; -// Splits SDP into sessionpart and mediasections. Ensures CRLF. -SDPUtils.splitSections = function(blob) { - var parts = blob.split('\nm='); - return parts.map(function(part, index) { - return (index > 0 ? 'm=' + part : part).trim() + '\r\n'; - }); -}; + if (sctpInDescription(arguments[0])) { + // Check if the remote is FF. + var isFirefox = getRemoteFirefoxVersion(arguments[0]); -// Returns lines that start with a certain prefix. -SDPUtils.matchPrefix = function(blob, prefix) { - return SDPUtils.splitLines(blob).filter(function(line) { - return line.indexOf(prefix) === 0; - }); -}; + // Get the maximum message size the local peer is capable of sending + var canSendMMS = getCanSendMaxMessageSize(isFirefox); -// Parses an ICE candidate line. Sample input: -// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8 -// rport 55996" -SDPUtils.parseCandidate = function(line) { - var parts; - // Parse both variants. - if (line.indexOf('a=candidate:') === 0) { - parts = line.substring(12).split(' '); - } else { - parts = line.substring(10).split(' '); - } + // Get the maximum message size of the remote peer. + var remoteMMS = getMaxMessageSize(arguments[0], isFirefox); - var candidate = { - foundation: parts[0], - component: parseInt(parts[1], 10), - protocol: parts[2].toLowerCase(), - priority: parseInt(parts[3], 10), - ip: parts[4], - port: parseInt(parts[5], 10), - // skip parts[6] == 'typ' - type: parts[7] - }; + // Determine final maximum message size + var maxMessageSize = void 0; + if (canSendMMS === 0 && remoteMMS === 0) { + maxMessageSize = Number.POSITIVE_INFINITY; + } else if (canSendMMS === 0 || remoteMMS === 0) { + maxMessageSize = Math.max(canSendMMS, remoteMMS); + } else { + maxMessageSize = Math.min(canSendMMS, remoteMMS); + } - for (var i = 8; i < parts.length; i += 2) { - switch (parts[i]) { - case 'raddr': - candidate.relatedAddress = parts[i + 1]; - break; - case 'rport': - candidate.relatedPort = parseInt(parts[i + 1], 10); - break; - case 'tcptype': - candidate.tcpType = parts[i + 1]; - break; - case 'ufrag': - candidate.ufrag = parts[i + 1]; // for backward compability. - candidate.usernameFragment = parts[i + 1]; - break; - default: // extension handling, in particular ufrag - candidate[parts[i]] = parts[i + 1]; - break; + // Create a dummy RTCSctpTransport object and the 'maxMessageSize' + // attribute. + var sctp = {}; + Object.defineProperty(sctp, 'maxMessageSize', { + get: function get() { + return maxMessageSize; + } + }); + this._sctp = sctp; } - } - return candidate; -}; -// Translates a candidate object into SDP candidate attribute. -SDPUtils.writeCandidate = function(candidate) { - var sdp = []; - sdp.push(candidate.foundation); - sdp.push(candidate.component); - sdp.push(candidate.protocol.toUpperCase()); - sdp.push(candidate.priority); - sdp.push(candidate.ip); - sdp.push(candidate.port); + return origSetRemoteDescription.apply(this, arguments); + }; +} - var type = candidate.type; - sdp.push('typ'); - sdp.push(type); - if (type !== 'host' && candidate.relatedAddress && - candidate.relatedPort) { - sdp.push('raddr'); - sdp.push(candidate.relatedAddress); // was: relAddr - sdp.push('rport'); - sdp.push(candidate.relatedPort); // was: relPort +function shimSendThrowTypeError(window) { + if (!(window.RTCPeerConnection && 'createDataChannel' in window.RTCPeerConnection.prototype)) { + return; } - if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') { - sdp.push('tcptype'); - sdp.push(candidate.tcpType); + + // Note: Although Firefox >= 57 has a native implementation, the maximum + // message size can be reset for all data channels at a later stage. + // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831 + + function wrapDcSend(dc, pc) { + var origDataChannelSend = dc.send; + dc.send = function send() { + var data = arguments[0]; + var length = data.length || data.size || data.byteLength; + if (dc.readyState === 'open' && pc.sctp && length > pc.sctp.maxMessageSize) { + throw new TypeError('Message too large (can send a maximum of ' + pc.sctp.maxMessageSize + ' bytes)'); + } + return origDataChannelSend.apply(dc, arguments); + }; } - if (candidate.ufrag) { - sdp.push('ufrag'); - sdp.push(candidate.ufrag); + var origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel; + window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() { + var dataChannel = origCreateDataChannel.apply(this, arguments); + wrapDcSend(dataChannel, this); + return dataChannel; + }; + utils.wrapPeerConnectionEvent(window, 'datachannel', function (e) { + wrapDcSend(e.channel, e.target); + return e; + }); +} + +/* shims RTCConnectionState by pretending it is the same as iceConnectionState. + * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12 + * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect + * since DTLS failures would be hidden. See + * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827 + * for the Firefox tracking bug. + */ +function shimConnectionState(window) { + if (!window.RTCPeerConnection || 'connectionState' in window.RTCPeerConnection.prototype) { + return; } - return 'candidate:' + sdp.join(' '); -}; + var proto = window.RTCPeerConnection.prototype; + Object.defineProperty(proto, 'connectionState', { + get: function get() { + return { + completed: 'connected', + checking: 'connecting' + }[this.iceConnectionState] || this.iceConnectionState; + }, -// Parses an ice-options line, returns an array of option tags. -// a=ice-options:foo bar -SDPUtils.parseIceOptions = function(line) { - return line.substr(14).split(' '); + enumerable: true, + configurable: true + }); + Object.defineProperty(proto, 'onconnectionstatechange', { + get: function get() { + return this._onconnectionstatechange || null; + }, + set: function set(cb) { + if (this._onconnectionstatechange) { + this.removeEventListener('connectionstatechange', this._onconnectionstatechange); + delete this._onconnectionstatechange; + } + if (cb) { + this.addEventListener('connectionstatechange', this._onconnectionstatechange = cb); + } + }, + + enumerable: true, + configurable: true + }); + + ['setLocalDescription', 'setRemoteDescription'].forEach(function (method) { + var origMethod = proto[method]; + proto[method] = function () { + if (!this._connectionstatechangepoly) { + this._connectionstatechangepoly = function (e) { + var pc = e.target; + if (pc._lastConnectionState !== pc.connectionState) { + pc._lastConnectionState = pc.connectionState; + var newEvent = new Event('connectionstatechange', e); + pc.dispatchEvent(newEvent); + } + return e; + }; + this.addEventListener('iceconnectionstatechange', this._connectionstatechangepoly); + } + return origMethod.apply(this, arguments); + }; + }); } -// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input: -// a=rtpmap:111 opus/48000/2 -SDPUtils.parseRtpMap = function(line) { - var parts = line.substr(9).split(' '); - var parsed = { - payloadType: parseInt(parts.shift(), 10) // was: id +function removeAllowExtmapMixed(window) { + /* remove a=extmap-allow-mixed for Chrome < M71 */ + if (!window.RTCPeerConnection) { + return; + } + var browserDetails = utils.detectBrowser(window); + if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) { + return; + } + var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription; + window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) { + if (desc && desc.sdp && desc.sdp.indexOf('\na=extmap-allow-mixed') !== -1) { + desc.sdp = desc.sdp.split('\n').filter(function (line) { + return line.trim() !== 'a=extmap-allow-mixed'; + }).join('\n'); + } + return nativeSRD.apply(this, arguments); }; +} - parts = parts[0].split('/'); +},{"./utils":15,"sdp":17}],7:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - parsed.name = parts[0]; - parsed.clockRate = parseInt(parts[1], 10); // was: clockrate - // was: channels - parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1; - return parsed; -}; +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined; -// Generate an a=rtpmap line from RTCRtpCodecCapability or -// RTCRtpCodecParameters. -SDPUtils.writeRtpMap = function(codec) { - var pt = codec.payloadType; - if (codec.preferredPayloadType !== undefined) { - pt = codec.preferredPayloadType; - } - return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + - (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\r\n'; -}; +var _getusermedia = require('./getusermedia'); -// Parses an a=extmap line (headerextension from RFC 5285). Sample input: -// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset -// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset -SDPUtils.parseExtmap = function(line) { - var parts = line.substr(9).split(' '); - return { - id: parseInt(parts[0], 10), - direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv', - uri: parts[1] - }; -}; +Object.defineProperty(exports, 'shimGetUserMedia', { + enumerable: true, + get: function get() { + return _getusermedia.shimGetUserMedia; + } +}); -// Generates a=extmap line from RTCRtpHeaderExtensionParameters or -// RTCRtpHeaderExtension. -SDPUtils.writeExtmap = function(headerExtension) { - return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + - (headerExtension.direction && headerExtension.direction !== 'sendrecv' - ? '/' + headerExtension.direction - : '') + - ' ' + headerExtension.uri + '\r\n'; -}; +var _getdisplaymedia = require('./getdisplaymedia'); -// Parses an ftmp line, returns dictionary. Sample input: -// a=fmtp:96 vbr=on;cng=on -// Also deals with vbr=on; cng=on -SDPUtils.parseFmtp = function(line) { - var parsed = {}; - var kv; - var parts = line.substr(line.indexOf(' ') + 1).split(';'); - for (var j = 0; j < parts.length; j++) { - kv = parts[j].trim().split('='); - parsed[kv[0].trim()] = kv[1]; +Object.defineProperty(exports, 'shimGetDisplayMedia', { + enumerable: true, + get: function get() { + return _getdisplaymedia.shimGetDisplayMedia; } - return parsed; -}; +}); +exports.shimPeerConnection = shimPeerConnection; +exports.shimReplaceTrack = shimReplaceTrack; -// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters. -SDPUtils.writeFmtp = function(codec) { - var line = ''; - var pt = codec.payloadType; - if (codec.preferredPayloadType !== undefined) { - pt = codec.preferredPayloadType; +var _utils = require('../utils'); + +var utils = _interopRequireWildcard(_utils); + +var _filtericeservers = require('./filtericeservers'); + +var _rtcpeerconnectionShim = require('rtcpeerconnection-shim'); + +var _rtcpeerconnectionShim2 = _interopRequireDefault(_rtcpeerconnectionShim); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } + +function shimPeerConnection(window) { + var browserDetails = utils.detectBrowser(window); + + if (window.RTCIceGatherer) { + if (!window.RTCIceCandidate) { + window.RTCIceCandidate = function RTCIceCandidate(args) { + return args; + }; + } + if (!window.RTCSessionDescription) { + window.RTCSessionDescription = function RTCSessionDescription(args) { + return args; + }; + } + // this adds an additional event listener to MediaStrackTrack that signals + // when a tracks enabled property was changed. Workaround for a bug in + // addStream, see below. No longer required in 15025+ + if (browserDetails.version < 15025) { + var origMSTEnabled = Object.getOwnPropertyDescriptor(window.MediaStreamTrack.prototype, 'enabled'); + Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', { + set: function set(value) { + origMSTEnabled.set.call(this, value); + var ev = new Event('enabled'); + ev.enabled = value; + this.dispatchEvent(ev); + } + }); + } } - if (codec.parameters && Object.keys(codec.parameters).length) { - var params = []; - Object.keys(codec.parameters).forEach(function(param) { - params.push(param + '=' + codec.parameters[param]); + + // ORTC defines the DTMF sender a bit different. + // https://github.com/w3c/ortc/issues/714 + if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) { + Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', { + get: function get() { + if (this._dtmf === undefined) { + if (this.track.kind === 'audio') { + this._dtmf = new window.RTCDtmfSender(this); + } else if (this.track.kind === 'video') { + this._dtmf = null; + } + } + return this._dtmf; + } }); - line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n'; } - return line; -}; + // Edge currently only implements the RTCDtmfSender, not the + // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2* + if (window.RTCDtmfSender && !window.RTCDTMFSender) { + window.RTCDTMFSender = window.RTCDtmfSender; + } -// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input: -// a=rtcp-fb:98 nack rpsi -SDPUtils.parseRtcpFb = function(line) { - var parts = line.substr(line.indexOf(' ') + 1).split(' '); - return { - type: parts.shift(), - parameter: parts.join(' ') + var RTCPeerConnectionShim = (0, _rtcpeerconnectionShim2.default)(window, browserDetails.version); + window.RTCPeerConnection = function RTCPeerConnection(config) { + if (config && config.iceServers) { + config.iceServers = (0, _filtericeservers.filterIceServers)(config.iceServers, browserDetails.version); + utils.log('ICE servers after filtering:', config.iceServers); + } + return new RTCPeerConnectionShim(config); }; -}; -// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters. -SDPUtils.writeRtcpFb = function(codec) { - var lines = ''; - var pt = codec.payloadType; - if (codec.preferredPayloadType !== undefined) { - pt = codec.preferredPayloadType; - } - if (codec.rtcpFeedback && codec.rtcpFeedback.length) { - // FIXME: special handling for trr-int? - codec.rtcpFeedback.forEach(function(fb) { - lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + - (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + - '\r\n'; - }); - } - return lines; -}; + window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype; +} -// Parses an RFC 5576 ssrc media attribute. Sample input: -// a=ssrc:3735928559 cname:something -SDPUtils.parseSsrcMedia = function(line) { - var sp = line.indexOf(' '); - var parts = { - ssrc: parseInt(line.substr(7, sp - 7), 10) - }; - var colon = line.indexOf(':', sp); - if (colon > -1) { - parts.attribute = line.substr(sp + 1, colon - sp - 1); - parts.value = line.substr(colon + 1); - } else { - parts.attribute = line.substr(sp + 1); - } - return parts; -}; - -// Extracts the MID (RFC 5888) from a media section. -// returns the MID or undefined if no mid line was found. -SDPUtils.getMid = function(mediaSection) { - var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0]; - if (mid) { - return mid.substr(6); +function shimReplaceTrack(window) { + // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614 + if (window.RTCRtpSender && !('replaceTrack' in window.RTCRtpSender.prototype)) { + window.RTCRtpSender.prototype.replaceTrack = window.RTCRtpSender.prototype.setTrack; } } -SDPUtils.parseFingerprint = function(line) { - var parts = line.substr(14).split(' '); - return { - algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge. - value: parts[1] - }; -}; +},{"../utils":15,"./filtericeservers":8,"./getdisplaymedia":9,"./getusermedia":10,"rtcpeerconnection-shim":16}],8:[function(require,module,exports){ +/* + * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; -// Extracts DTLS parameters from SDP media section or sessionpart. -// FIXME: for consistency with other functions this should only -// get the fingerprint line as input. See also getIceParameters. -SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) { - var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, - 'a=fingerprint:'); - // Note: a=setup line is ignored since we use the 'auto' role. - // Note2: 'algorithm' is not case sensitive except in Edge. - return { - role: 'auto', - fingerprints: lines.map(SDPUtils.parseFingerprint) - }; -}; +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.filterIceServers = filterIceServers; -// Serializes DTLS parameters to SDP. -SDPUtils.writeDtlsParameters = function(params, setupType) { - var sdp = 'a=setup:' + setupType + '\r\n'; - params.fingerprints.forEach(function(fp) { - sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n'; - }); - return sdp; -}; -// Parses ICE information from SDP media section or sessionpart. -// FIXME: for consistency with other functions this should only -// get the ice-ufrag and ice-pwd lines as input. -SDPUtils.getIceParameters = function(mediaSection, sessionpart) { - var lines = SDPUtils.splitLines(mediaSection); - // Search in session part, too. - lines = lines.concat(SDPUtils.splitLines(sessionpart)); - var iceParameters = { - usernameFragment: lines.filter(function(line) { - return line.indexOf('a=ice-ufrag:') === 0; - })[0].substr(12), - password: lines.filter(function(line) { - return line.indexOf('a=ice-pwd:') === 0; - })[0].substr(10) - }; - return iceParameters; -}; +var _utils = require('../utils'); -// Serializes ICE parameters to SDP. -SDPUtils.writeIceParameters = function(params) { - return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + - 'a=ice-pwd:' + params.password + '\r\n'; -}; +var utils = _interopRequireWildcard(_utils); -// Parses the SDP media section and returns RTCRtpParameters. -SDPUtils.parseRtpParameters = function(mediaSection) { - var description = { - codecs: [], - headerExtensions: [], - fecMechanisms: [], - rtcp: [] - }; - var lines = SDPUtils.splitLines(mediaSection); - var mline = lines[0].split(' '); - for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..] - var pt = mline[i]; - var rtpmapline = SDPUtils.matchPrefix( - mediaSection, 'a=rtpmap:' + pt + ' ')[0]; - if (rtpmapline) { - var codec = SDPUtils.parseRtpMap(rtpmapline); - var fmtps = SDPUtils.matchPrefix( - mediaSection, 'a=fmtp:' + pt + ' '); - // Only the first a=fmtp: is considered. - codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {}; - codec.rtcpFeedback = SDPUtils.matchPrefix( - mediaSection, 'a=rtcp-fb:' + pt + ' ') - .map(SDPUtils.parseRtcpFb); - description.codecs.push(codec); - // parse FEC mechanisms from rtpmap lines. - switch (codec.name.toUpperCase()) { - case 'RED': - case 'ULPFEC': - description.fecMechanisms.push(codec.name.toUpperCase()); - break; - default: // only RED and ULPFEC are recognized as FEC mechanisms. - break; +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } + +// Edge does not like +// 1) stun: filtered after 14393 unless ?transport=udp is present +// 2) turn: that does not have all of turn:host:port?transport=udp +// 3) turn: with ipv6 addresses +// 4) turn: occurring muliple times +function filterIceServers(iceServers, edgeVersion) { + var hasTurn = false; + iceServers = JSON.parse(JSON.stringify(iceServers)); + return iceServers.filter(function (server) { + if (server && (server.urls || server.url)) { + var urls = server.urls || server.url; + if (server.url && !server.urls) { + utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls'); } - } - } - SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) { - description.headerExtensions.push(SDPUtils.parseExtmap(line)); - }); - // FIXME: parse rtcp. - return description; -}; + var isString = typeof urls === 'string'; + if (isString) { + urls = [urls]; + } + urls = urls.filter(function (url) { + // filter STUN unconditionally. + if (url.indexOf('stun:') === 0) { + return false; + } -// Generates parts of the SDP media section describing the capabilities / -// parameters. -SDPUtils.writeRtpDescription = function(kind, caps) { - var sdp = ''; + var validTurn = url.startsWith('turn') && !url.startsWith('turn:[') && url.includes('transport=udp'); + if (validTurn && !hasTurn) { + hasTurn = true; + return true; + } + return validTurn && !hasTurn; + }); - // Build the mline. - sdp += 'm=' + kind + ' '; - sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs. - sdp += ' UDP/TLS/RTP/SAVPF '; - sdp += caps.codecs.map(function(codec) { - if (codec.preferredPayloadType !== undefined) { - return codec.preferredPayloadType; + delete server.url; + server.urls = isString ? urls[0] : urls; + return !!urls.length; } - return codec.payloadType; - }).join(' ') + '\r\n'; + }); +} - sdp += 'c=IN IP4 0.0.0.0\r\n'; - sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n'; +},{"../utils":15}],9:[function(require,module,exports){ +/* + * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb. - caps.codecs.forEach(function(codec) { - sdp += SDPUtils.writeRtpMap(codec); - sdp += SDPUtils.writeFmtp(codec); - sdp += SDPUtils.writeRtcpFb(codec); - }); - var maxptime = 0; - caps.codecs.forEach(function(codec) { - if (codec.maxptime > maxptime) { - maxptime = codec.maxptime; - } - }); - if (maxptime > 0) { - sdp += 'a=maxptime:' + maxptime + '\r\n'; +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.shimGetDisplayMedia = shimGetDisplayMedia; +function shimGetDisplayMedia(window) { + if (!('getDisplayMedia' in window.navigator)) { + return; } - sdp += 'a=rtcp-mux\r\n'; + if (!window.navigator.mediaDevices) { + return; + } + if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) { + return; + } + window.navigator.mediaDevices.getDisplayMedia = window.navigator.getDisplayMedia.bind(window.navigator); +} - caps.headerExtensions.forEach(function(extension) { - sdp += SDPUtils.writeExtmap(extension); - }); - // FIXME: write fecMechanisms. - return sdp; -}; +},{}],10:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; -// Parses the SDP media section and returns an array of -// RTCRtpEncodingParameters. -SDPUtils.parseRtpEncodingParameters = function(mediaSection) { - var encodingParameters = []; - var description = SDPUtils.parseRtpParameters(mediaSection); - var hasRed = description.fecMechanisms.indexOf('RED') !== -1; - var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1; +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.shimGetUserMedia = shimGetUserMedia; +function shimGetUserMedia(window) { + var navigator = window && window.navigator; - // filter a=ssrc:... cname:, ignore PlanB-msid - var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') - .map(function(line) { - return SDPUtils.parseSsrcMedia(line); - }) - .filter(function(parts) { - return parts.attribute === 'cname'; - }); - var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc; - var secondarySsrc; + var shimError_ = function shimError_(e) { + return { + name: { PermissionDeniedError: 'NotAllowedError' }[e.name] || e.name, + message: e.message, + constraint: e.constraint, + toString: function toString() { + return this.name; + } + }; + }; - var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID') - .map(function(line) { - var parts = line.split(' '); - parts.shift(); - return parts.map(function(part) { - return parseInt(part, 10); + // getUserMedia error shim. + var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function (c) { + return origGetUserMedia(c).catch(function (e) { + return Promise.reject(shimError_(e)); }); - }); - if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) { - secondarySsrc = flows[0][1]; - } + }; +} - description.codecs.forEach(function(codec) { - if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) { - var encParam = { - ssrc: primarySsrc, - codecPayloadType: parseInt(codec.parameters.apt, 10), - rtx: { - ssrc: secondarySsrc - } - }; - encodingParameters.push(encParam); - if (hasRed) { - encParam = JSON.parse(JSON.stringify(encParam)); - encParam.fec = { - ssrc: secondarySsrc, - mechanism: hasUlpfec ? 'red+ulpfec' : 'red' - }; - encodingParameters.push(encParam); - } - } - }); - if (encodingParameters.length === 0 && primarySsrc) { - encodingParameters.push({ - ssrc: primarySsrc - }); - } +},{}],11:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - // we support both b=AS and b=TIAS but interpret AS as TIAS. - var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b='); - if (bandwidth.length) { - if (bandwidth[0].indexOf('b=TIAS:') === 0) { - bandwidth = parseInt(bandwidth[0].substr(7), 10); - } else if (bandwidth[0].indexOf('b=AS:') === 0) { - // use formula from JSEP to convert b=AS to TIAS value. - bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95 - - (50 * 40 * 8); - } else { - bandwidth = undefined; - } - encodingParameters.forEach(function(params) { - params.maxBitrate = bandwidth; - }); +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.shimGetDisplayMedia = exports.shimGetUserMedia = undefined; + +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; + +var _getusermedia = require('./getusermedia'); + +Object.defineProperty(exports, 'shimGetUserMedia', { + enumerable: true, + get: function get() { + return _getusermedia.shimGetUserMedia; } - return encodingParameters; -}; +}); -// parses http://draft.ortc.org/#rtcrtcpparameters* -SDPUtils.parseRtcpParameters = function(mediaSection) { - var rtcpParameters = {}; +var _getdisplaymedia = require('./getdisplaymedia'); - var cname; - // Gets the first SSRC. Note that with RTX there might be multiple - // SSRCs. - var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') - .map(function(line) { - return SDPUtils.parseSsrcMedia(line); - }) - .filter(function(obj) { - return obj.attribute === 'cname'; - })[0]; - if (remoteSsrc) { - rtcpParameters.cname = remoteSsrc.value; - rtcpParameters.ssrc = remoteSsrc.ssrc; +Object.defineProperty(exports, 'shimGetDisplayMedia', { + enumerable: true, + get: function get() { + return _getdisplaymedia.shimGetDisplayMedia; } +}); +exports.shimOnTrack = shimOnTrack; +exports.shimPeerConnection = shimPeerConnection; +exports.shimSenderGetStats = shimSenderGetStats; +exports.shimReceiverGetStats = shimReceiverGetStats; +exports.shimRemoveStream = shimRemoveStream; +exports.shimRTCDataChannel = shimRTCDataChannel; - // Edge uses the compound attribute instead of reducedSize - // compound is !reducedSize - var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize'); - rtcpParameters.reducedSize = rsize.length > 0; - rtcpParameters.compound = rsize.length === 0; +var _utils = require('../utils'); - // parses the rtcp-mux attrіbute. - // Note that Edge does not support unmuxed RTCP. - var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux'); - rtcpParameters.mux = mux.length > 0; +var utils = _interopRequireWildcard(_utils); - return rtcpParameters; -}; +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } -// parses either a=msid: or a=ssrc:... msid lines and returns -// the id of the MediaStream and MediaStreamTrack. -SDPUtils.parseMsid = function(mediaSection) { - var parts; - var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:'); - if (spec.length === 1) { - parts = spec[0].substr(7).split(' '); - return {stream: parts[0], track: parts[1]}; - } - var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') - .map(function(line) { - return SDPUtils.parseSsrcMedia(line); - }) - .filter(function(parts) { - return parts.attribute === 'msid'; - }); - if (planB.length > 0) { - parts = planB[0].value.split(' '); - return {stream: parts[0], track: parts[1]}; +function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } + +function shimOnTrack(window) { + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) { + Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { + get: function get() { + return { receiver: this.receiver }; + } + }); } -}; +} -// Generate a session ID for SDP. -// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1 -// recommends using a cryptographically random +ve 64-bit value -// but right now this should be acceptable and within the right range -SDPUtils.generateSessionId = function() { - return Math.random().toString().substr(2, 21); -}; +function shimPeerConnection(window) { + var browserDetails = utils.detectBrowser(window); -// Write boilder plate for start of SDP -// sessId argument is optional - if not supplied it will -// be generated randomly -// sessVersion is optional and defaults to 2 -SDPUtils.writeSessionBoilerplate = function(sessId, sessVer) { - var sessionId; - var version = sessVer !== undefined ? sessVer : 2; - if (sessId) { - sessionId = sessId; - } else { - sessionId = SDPUtils.generateSessionId(); + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) { + return; // probably media.peerconnection.enabled=false in about:config + } + if (!window.RTCPeerConnection && window.mozRTCPeerConnection) { + // very basic support for old versions. + window.RTCPeerConnection = window.mozRTCPeerConnection; } - // FIXME: sess-id should be an NTP timestamp. - return 'v=0\r\n' + - 'o=thisisadapterortc ' + sessionId + ' ' + version + ' IN IP4 127.0.0.1\r\n' + - 's=-\r\n' + - 't=0 0\r\n'; -}; -SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) { - var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); + if (browserDetails.version < 53) { + // shim away need for obsolete RTCIceCandidate/RTCSessionDescription. + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) { + var nativeMethod = window.RTCPeerConnection.prototype[method]; + var methodObj = _defineProperty({}, method, function () { + arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]); + return nativeMethod.apply(this, arguments); + }); + window.RTCPeerConnection.prototype[method] = methodObj[method]; + }); + } - // Map ICE parameters (ufrag, pwd) to SDP. - sdp += SDPUtils.writeIceParameters( - transceiver.iceGatherer.getLocalParameters()); + // support for addIceCandidate(null or undefined) + // as well as ignoring {sdpMid, candidate: ""} + if (browserDetails.version < 68) { + var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate; + window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() { + if (!arguments[0]) { + if (arguments[1]) { + arguments[1].apply(null); + } + return Promise.resolve(); + } + // Firefox 68+ emits and processes {candidate: "", ...}, ignore + // in older versions. + if (arguments[0] && arguments[0].candidate === '') { + return Promise.resolve(); + } + return nativeAddIceCandidate.apply(this, arguments); + }; + } - // Map DTLS parameters to SDP. - sdp += SDPUtils.writeDtlsParameters( - transceiver.dtlsTransport.getLocalParameters(), - type === 'offer' ? 'actpass' : 'active'); + var modernStatsTypes = { + inboundrtp: 'inbound-rtp', + outboundrtp: 'outbound-rtp', + candidatepair: 'candidate-pair', + localcandidate: 'local-candidate', + remotecandidate: 'remote-candidate' + }; - sdp += 'a=mid:' + transceiver.mid + '\r\n'; + var nativeGetStats = window.RTCPeerConnection.prototype.getStats; + window.RTCPeerConnection.prototype.getStats = function getStats() { + var _arguments = Array.prototype.slice.call(arguments), + selector = _arguments[0], + onSucc = _arguments[1], + onErr = _arguments[2]; + + return nativeGetStats.apply(this, [selector || null]).then(function (stats) { + if (browserDetails.version < 53 && !onSucc) { + // Shim only promise getStats with spec-hyphens in type names + // Leave callback version alone; misc old uses of forEach before Map + try { + stats.forEach(function (stat) { + stat.type = modernStatsTypes[stat.type] || stat.type; + }); + } catch (e) { + if (e.name !== 'TypeError') { + throw e; + } + // Avoid TypeError: "type" is read-only, in old versions. 34-43ish + stats.forEach(function (stat, i) { + stats.set(i, Object.assign({}, stat, { + type: modernStatsTypes[stat.type] || stat.type + })); + }); + } + } + return stats; + }).then(onSucc, onErr); + }; +} - if (transceiver.direction) { - sdp += 'a=' + transceiver.direction + '\r\n'; - } else if (transceiver.rtpSender && transceiver.rtpReceiver) { - sdp += 'a=sendrecv\r\n'; - } else if (transceiver.rtpSender) { - sdp += 'a=sendonly\r\n'; - } else if (transceiver.rtpReceiver) { - sdp += 'a=recvonly\r\n'; - } else { - sdp += 'a=inactive\r\n'; +function shimSenderGetStats(window) { + if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) { + return; } - - if (transceiver.rtpSender) { - // spec. - var msid = 'msid:' + stream.id + ' ' + - transceiver.rtpSender.track.id + '\r\n'; - sdp += 'a=' + msid; - - // for Chrome. - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + - ' ' + msid; - if (transceiver.sendEncodingParameters[0].rtx) { - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + - ' ' + msid; - sdp += 'a=ssrc-group:FID ' + - transceiver.sendEncodingParameters[0].ssrc + ' ' + - transceiver.sendEncodingParameters[0].rtx.ssrc + - '\r\n'; - } + if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) { + return; } - // FIXME: this should be written by writeRtpDescription. - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + - ' cname:' + SDPUtils.localCName + '\r\n'; - if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { - sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + - ' cname:' + SDPUtils.localCName + '\r\n'; + var origGetSenders = window.RTCPeerConnection.prototype.getSenders; + if (origGetSenders) { + window.RTCPeerConnection.prototype.getSenders = function getSenders() { + var _this = this; + + var senders = origGetSenders.apply(this, []); + senders.forEach(function (sender) { + return sender._pc = _this; + }); + return senders; + }; } - return sdp; -}; -// Gets the direction from the mediaSection or the sessionpart. -SDPUtils.getDirection = function(mediaSection, sessionpart) { - // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv. - var lines = SDPUtils.splitLines(mediaSection); - for (var i = 0; i < lines.length; i++) { - switch (lines[i]) { - case 'a=sendrecv': - case 'a=sendonly': - case 'a=recvonly': - case 'a=inactive': - return lines[i].substr(2); - default: - // FIXME: What should happen here? - } - } - if (sessionpart) { - return SDPUtils.getDirection(sessionpart); + var origAddTrack = window.RTCPeerConnection.prototype.addTrack; + if (origAddTrack) { + window.RTCPeerConnection.prototype.addTrack = function addTrack() { + var sender = origAddTrack.apply(this, arguments); + sender._pc = this; + return sender; + }; } - return 'sendrecv'; -}; + window.RTCRtpSender.prototype.getStats = function getStats() { + return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map()); + }; +} -SDPUtils.getKind = function(mediaSection) { - var lines = SDPUtils.splitLines(mediaSection); - var mline = lines[0].split(' '); - return mline[0].substr(2); -}; +function shimReceiverGetStats(window) { + if (!((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) { + return; + } + if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) { + return; + } + var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers; + if (origGetReceivers) { + window.RTCPeerConnection.prototype.getReceivers = function getReceivers() { + var _this2 = this; + + var receivers = origGetReceivers.apply(this, []); + receivers.forEach(function (receiver) { + return receiver._pc = _this2; + }); + return receivers; + }; + } + utils.wrapPeerConnectionEvent(window, 'track', function (e) { + e.receiver._pc = e.srcElement; + return e; + }); + window.RTCRtpReceiver.prototype.getStats = function getStats() { + return this._pc.getStats(this.track); + }; +} -SDPUtils.isRejected = function(mediaSection) { - return mediaSection.split(' ', 2)[1] === '0'; -}; +function shimRemoveStream(window) { + if (!window.RTCPeerConnection || 'removeStream' in window.RTCPeerConnection.prototype) { + return; + } + window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { + var _this3 = this; -SDPUtils.parseMLine = function(mediaSection) { - var lines = SDPUtils.splitLines(mediaSection); - var mline = lines[0].split(' '); - return { - kind: mline[0].substr(2), - port: parseInt(mline[1], 10), - protocol: mline[2], - fmt: mline.slice(3).join(' ') + utils.deprecated('removeStream', 'removeTrack'); + this.getSenders().forEach(function (sender) { + if (sender.track && stream.getTracks().includes(sender.track)) { + _this3.removeTrack(sender); + } + }); }; -}; +} -// Expose public methods. -if (typeof module === 'object') { - module.exports = SDPUtils; +function shimRTCDataChannel(window) { + // rename DataChannel to RTCDataChannel (native fix in FF60): + // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851 + if (window.DataChannel && !window.RTCDataChannel) { + window.RTCDataChannel = window.DataChannel; + } } -},{}],3:[function(require,module,exports){ -(function (global){ +},{"../utils":15,"./getdisplaymedia":12,"./getusermedia":13}],12:[function(require,module,exports){ /* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. */ - /* eslint-env node */ - +/* eslint-env node */ 'use strict'; -var adapterFactory = require('./adapter_factory.js'); -module.exports = adapterFactory({window: global.window}); +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.shimGetDisplayMedia = shimGetDisplayMedia; +function shimGetDisplayMedia(window, preferredMediaSource) { + if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) { + return; + } + if (!window.navigator.mediaDevices) { + return; + } + window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) { + if (!(constraints && constraints.video)) { + var err = new DOMException('getDisplayMedia without video ' + 'constraints is undefined'); + err.name = 'NotFoundError'; + // from https://heycam.github.io/webidl/#idl-DOMException-error-names + err.code = 8; + return Promise.reject(err); + } + if (constraints.video === true) { + constraints.video = { mediaSource: preferredMediaSource }; + } else { + constraints.video.mediaSource = preferredMediaSource; + } + return window.navigator.mediaDevices.getUserMedia(constraints); + }; +} -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./adapter_factory.js":4}],4:[function(require,module,exports){ +},{}],13:[function(require,module,exports){ /* * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. * @@ -2235,140 +2073,77 @@ module.exports = adapterFactory({window: global.window}); * that can be found in the LICENSE file in the root of the source * tree. */ - /* eslint-env node */ - +/* eslint-env node */ 'use strict'; -var utils = require('./utils'); -// Shimming starts here. -module.exports = function(dependencies, opts) { - var window = dependencies && dependencies.window; - - var options = { - shimChrome: true, - shimFirefox: true, - shimEdge: true, - shimSafari: true, - }; - - for (var key in opts) { - if (hasOwnProperty.call(opts, key)) { - options[key] = opts[key]; - } - } - - // Utils. - var logging = utils.log; - var browserDetails = utils.detectBrowser(window); +Object.defineProperty(exports, "__esModule", { + value: true +}); - // Export to the adapter global object visible in the browser. - var adapter = { - browserDetails: browserDetails, - extractVersion: utils.extractVersion, - disableLog: utils.disableLog, - disableWarnings: utils.disableWarnings - }; +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; - // Uncomment the line below if you want logging to occur, including logging - // for the switch statement below. Can also be turned on in the browser via - // adapter.disableLog(false), but then logging from the switch statement below - // will not appear. - // require('./utils').disableLog(false); +exports.shimGetUserMedia = shimGetUserMedia; - // Browser shims. - var chromeShim = require('./chrome/chrome_shim') || null; - var edgeShim = require('./edge/edge_shim') || null; - var firefoxShim = require('./firefox/firefox_shim') || null; - var safariShim = require('./safari/safari_shim') || null; - var commonShim = require('./common_shim') || null; +var _utils = require('../utils'); - // Shim browser if found. - switch (browserDetails.browser) { - case 'chrome': - if (!chromeShim || !chromeShim.shimPeerConnection || - !options.shimChrome) { - logging('Chrome shim is not included in this adapter release.'); - return adapter; - } - logging('adapter.js shimming chrome.'); - // Export to the adapter global object visible in the browser. - adapter.browserShim = chromeShim; - commonShim.shimCreateObjectURL(window); +var utils = _interopRequireWildcard(_utils); - chromeShim.shimGetUserMedia(window); - chromeShim.shimMediaStream(window); - chromeShim.shimSourceObject(window); - chromeShim.shimPeerConnection(window); - chromeShim.shimOnTrack(window); - chromeShim.shimAddTrackRemoveTrack(window); - chromeShim.shimGetSendersWithDtmf(window); +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } - commonShim.shimRTCIceCandidate(window); - break; - case 'firefox': - if (!firefoxShim || !firefoxShim.shimPeerConnection || - !options.shimFirefox) { - logging('Firefox shim is not included in this adapter release.'); - return adapter; - } - logging('adapter.js shimming firefox.'); - // Export to the adapter global object visible in the browser. - adapter.browserShim = firefoxShim; - commonShim.shimCreateObjectURL(window); +function shimGetUserMedia(window) { + var browserDetails = utils.detectBrowser(window); + var navigator = window && window.navigator; + var MediaStreamTrack = window && window.MediaStreamTrack; - firefoxShim.shimGetUserMedia(window); - firefoxShim.shimSourceObject(window); - firefoxShim.shimPeerConnection(window); - firefoxShim.shimOnTrack(window); + navigator.getUserMedia = function (constraints, onSuccess, onError) { + // Replace Firefox 44+'s deprecation warning with unprefixed version. + utils.deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia'); + navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError); + }; - commonShim.shimRTCIceCandidate(window); - break; - case 'edge': - if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) { - logging('MS edge shim is not included in this adapter release.'); - return adapter; + if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) { + var remap = function remap(obj, a, b) { + if (a in obj && !(b in obj)) { + obj[b] = obj[a]; + delete obj[a]; } - logging('adapter.js shimming edge.'); - // Export to the adapter global object visible in the browser. - adapter.browserShim = edgeShim; - commonShim.shimCreateObjectURL(window); - - edgeShim.shimGetUserMedia(window); - edgeShim.shimPeerConnection(window); - edgeShim.shimReplaceTrack(window); + }; - // the edge shim implements the full RTCIceCandidate object. - break; - case 'safari': - if (!safariShim || !options.shimSafari) { - logging('Safari shim is not included in this adapter release.'); - return adapter; + var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function (c) { + if ((typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object' && _typeof(c.audio) === 'object') { + c = JSON.parse(JSON.stringify(c)); + remap(c.audio, 'autoGainControl', 'mozAutoGainControl'); + remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression'); } - logging('adapter.js shimming safari.'); - // Export to the adapter global object visible in the browser. - adapter.browserShim = safariShim; - commonShim.shimCreateObjectURL(window); + return nativeGetUserMedia(c); + }; - safariShim.shimRTCIceServerUrls(window); - safariShim.shimCallbacksAPI(window); - safariShim.shimLocalStreamsAPI(window); - safariShim.shimRemoteStreamsAPI(window); - safariShim.shimTrackEventTransceiver(window); - safariShim.shimGetUserMedia(window); - safariShim.shimCreateOfferLegacy(window); + if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) { + var nativeGetSettings = MediaStreamTrack.prototype.getSettings; + MediaStreamTrack.prototype.getSettings = function () { + var obj = nativeGetSettings.apply(this, arguments); + remap(obj, 'mozAutoGainControl', 'autoGainControl'); + remap(obj, 'mozNoiseSuppression', 'noiseSuppression'); + return obj; + }; + } - commonShim.shimRTCIceCandidate(window); - break; - default: - logging('Unsupported browser!'); - break; + if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) { + var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints; + MediaStreamTrack.prototype.applyConstraints = function (c) { + if (this.kind === 'audio' && (typeof c === 'undefined' ? 'undefined' : _typeof(c)) === 'object') { + c = JSON.parse(JSON.stringify(c)); + remap(c, 'autoGainControl', 'mozAutoGainControl'); + remap(c, 'noiseSuppression', 'mozNoiseSuppression'); + } + return nativeApplyConstraints.apply(this, [c]); + }; + } } +} - return adapter; -}; - -},{"./chrome/chrome_shim":5,"./common_shim":7,"./edge/edge_shim":8,"./firefox/firefox_shim":10,"./safari/safari_shim":12,"./utils":13}],5:[function(require,module,exports){ - +},{"../utils":15}],14:[function(require,module,exports){ /* * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. * @@ -2376,675 +2151,611 @@ module.exports = function(dependencies, opts) { * that can be found in the LICENSE file in the root of the source * tree. */ - /* eslint-env node */ 'use strict'; -var utils = require('../utils.js'); -var logging = utils.log; - -var chromeShim = { - shimMediaStream: function(window) { - window.MediaStream = window.MediaStream || window.webkitMediaStream; - }, - - shimOnTrack: function(window) { - if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in - window.RTCPeerConnection.prototype)) { - Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { - get: function() { - return this._ontrack; - }, - set: function(f) { - if (this._ontrack) { - this.removeEventListener('track', this._ontrack); - } - this.addEventListener('track', this._ontrack = f); - } - }); - var origSetRemoteDescription = - window.RTCPeerConnection.prototype.setRemoteDescription; - window.RTCPeerConnection.prototype.setRemoteDescription = function() { - var pc = this; - if (!pc._ontrackpoly) { - pc._ontrackpoly = function(e) { - // onaddstream does not fire when a track is added to an existing - // stream. But stream.onaddtrack is implemented so we use that. - e.stream.addEventListener('addtrack', function(te) { - var receiver; - if (window.RTCPeerConnection.prototype.getReceivers) { - receiver = pc.getReceivers().find(function(r) { - return r.track && r.track.id === te.track.id; - }); - } else { - receiver = {track: te.track}; - } - - var event = new Event('track'); - event.track = te.track; - event.receiver = receiver; - event.transceiver = {receiver: receiver}; - event.streams = [e.stream]; - pc.dispatchEvent(event); - }); - e.stream.getTracks().forEach(function(track) { - var receiver; - if (window.RTCPeerConnection.prototype.getReceivers) { - receiver = pc.getReceivers().find(function(r) { - return r.track && r.track.id === track.id; - }); - } else { - receiver = {track: track}; - } - var event = new Event('track'); - event.track = track; - event.receiver = receiver; - event.transceiver = {receiver: receiver}; - event.streams = [e.stream]; - pc.dispatchEvent(event); - }); - }; - pc.addEventListener('addstream', pc._ontrackpoly); - } - return origSetRemoteDescription.apply(pc, arguments); - }; - } - }, - - shimGetSendersWithDtmf: function(window) { - // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack. - if (typeof window === 'object' && window.RTCPeerConnection && - !('getSenders' in window.RTCPeerConnection.prototype) && - 'createDTMFSender' in window.RTCPeerConnection.prototype) { - var shimSenderWithDtmf = function(pc, track) { - return { - track: track, - get dtmf() { - if (this._dtmf === undefined) { - if (track.kind === 'audio') { - this._dtmf = pc.createDTMFSender(track); - } else { - this._dtmf = null; - } - } - return this._dtmf; - }, - _pc: pc - }; - }; - - // augment addTrack when getSenders is not available. - if (!window.RTCPeerConnection.prototype.getSenders) { - window.RTCPeerConnection.prototype.getSenders = function() { - this._senders = this._senders || []; - return this._senders.slice(); // return a copy of the internal state. - }; - var origAddTrack = window.RTCPeerConnection.prototype.addTrack; - window.RTCPeerConnection.prototype.addTrack = function(track, stream) { - var pc = this; - var sender = origAddTrack.apply(pc, arguments); - if (!sender) { - sender = shimSenderWithDtmf(pc, track); - pc._senders.push(sender); - } - return sender; - }; - var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack; - window.RTCPeerConnection.prototype.removeTrack = function(sender) { - var pc = this; - origRemoveTrack.apply(pc, arguments); - var idx = pc._senders.indexOf(sender); - if (idx !== -1) { - pc._senders.splice(idx, 1); - } - }; - } - var origAddStream = window.RTCPeerConnection.prototype.addStream; - window.RTCPeerConnection.prototype.addStream = function(stream) { - var pc = this; - pc._senders = pc._senders || []; - origAddStream.apply(pc, [stream]); - stream.getTracks().forEach(function(track) { - pc._senders.push(shimSenderWithDtmf(pc, track)); - }); - }; +Object.defineProperty(exports, "__esModule", { + value: true +}); - var origRemoveStream = window.RTCPeerConnection.prototype.removeStream; - window.RTCPeerConnection.prototype.removeStream = function(stream) { - var pc = this; - pc._senders = pc._senders || []; - origRemoveStream.apply(pc, [stream]); +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; - stream.getTracks().forEach(function(track) { - var sender = pc._senders.find(function(s) { - return s.track === track; - }); - if (sender) { - pc._senders.splice(pc._senders.indexOf(sender), 1); // remove sender - } - }); - }; - } else if (typeof window === 'object' && window.RTCPeerConnection && - 'getSenders' in window.RTCPeerConnection.prototype && - 'createDTMFSender' in window.RTCPeerConnection.prototype && - window.RTCRtpSender && - !('dtmf' in window.RTCRtpSender.prototype)) { - var origGetSenders = window.RTCPeerConnection.prototype.getSenders; - window.RTCPeerConnection.prototype.getSenders = function() { - var pc = this; - var senders = origGetSenders.apply(pc, []); - senders.forEach(function(sender) { - sender._pc = pc; - }); - return senders; - }; +exports.shimLocalStreamsAPI = shimLocalStreamsAPI; +exports.shimRemoteStreamsAPI = shimRemoteStreamsAPI; +exports.shimCallbacksAPI = shimCallbacksAPI; +exports.shimGetUserMedia = shimGetUserMedia; +exports.shimConstraints = shimConstraints; +exports.shimRTCIceServerUrls = shimRTCIceServerUrls; +exports.shimTrackEventTransceiver = shimTrackEventTransceiver; +exports.shimCreateOfferLegacy = shimCreateOfferLegacy; - Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', { - get: function() { - if (this._dtmf === undefined) { - if (this.track.kind === 'audio') { - this._dtmf = this._pc.createDTMFSender(this.track); - } else { - this._dtmf = null; - } - } - return this._dtmf; - } - }); - } - }, +var _utils = require('../utils'); - shimSourceObject: function(window) { - var URL = window && window.URL; +var utils = _interopRequireWildcard(_utils); - if (typeof window === 'object') { - if (window.HTMLMediaElement && - !('srcObject' in window.HTMLMediaElement.prototype)) { - // Shim the srcObject property, once, when HTMLMediaElement is found. - Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', { - get: function() { - return this._srcObject; - }, - set: function(stream) { - var self = this; - // Use _srcObject as a private property for this shim - this._srcObject = stream; - if (this.src) { - URL.revokeObjectURL(this.src); - } +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } - if (!stream) { - this.src = ''; - return undefined; - } - this.src = URL.createObjectURL(stream); - // We need to recreate the blob url when a track is added or - // removed. Doing it manually since we want to avoid a recursion. - stream.addEventListener('addtrack', function() { - if (self.src) { - URL.revokeObjectURL(self.src); - } - self.src = URL.createObjectURL(stream); - }); - stream.addEventListener('removetrack', function() { - if (self.src) { - URL.revokeObjectURL(self.src); - } - self.src = URL.createObjectURL(stream); - }); - } - }); +function shimLocalStreamsAPI(window) { + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) { + return; + } + if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) { + window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() { + if (!this._localStreams) { + this._localStreams = []; } - } - }, - - shimAddTrackRemoveTrack: function(window) { - var browserDetails = utils.detectBrowser(window); - // shim addTrack and removeTrack. - if (window.RTCPeerConnection.prototype.addTrack && - browserDetails.version >= 63) { - return; - } + return this._localStreams; + }; + } + if (!('addStream' in window.RTCPeerConnection.prototype)) { + var _addTrack = window.RTCPeerConnection.prototype.addTrack; + window.RTCPeerConnection.prototype.addStream = function addStream(stream) { + var _this = this; - // also shim pc.getLocalStreams when addTrack is shimmed - // to return the original streams. - var origGetLocalStreams = window.RTCPeerConnection.prototype - .getLocalStreams; - window.RTCPeerConnection.prototype.getLocalStreams = function() { - var self = this; - var nativeStreams = origGetLocalStreams.apply(this); - self._reverseStreams = self._reverseStreams || {}; - return nativeStreams.map(function(stream) { - return self._reverseStreams[stream.id]; + if (!this._localStreams) { + this._localStreams = []; + } + if (!this._localStreams.includes(stream)) { + this._localStreams.push(stream); + } + // Try to emulate Chrome's behaviour of adding in audio-video order. + // Safari orders by track id. + stream.getAudioTracks().forEach(function (track) { + return _addTrack.call(_this, track, stream); + }); + stream.getVideoTracks().forEach(function (track) { + return _addTrack.call(_this, track, stream); }); }; - var origAddStream = window.RTCPeerConnection.prototype.addStream; - window.RTCPeerConnection.prototype.addStream = function(stream) { - var pc = this; - pc._streams = pc._streams || {}; - pc._reverseStreams = pc._reverseStreams || {}; - - stream.getTracks().forEach(function(track) { - var alreadyExists = pc.getSenders().find(function(s) { - return s.track === track; - }); - if (alreadyExists) { - throw new DOMException('Track already exists.', - 'InvalidAccessError'); + window.RTCPeerConnection.prototype.addTrack = function addTrack(track) { + var stream = arguments[1]; + if (stream) { + if (!this._localStreams) { + this._localStreams = [stream]; + } else if (!this._localStreams.includes(stream)) { + this._localStreams.push(stream); } - }); - // Add identity mapping for consistency with addTrack. - // Unless this is being used with a stream from addTrack. - if (!pc._reverseStreams[stream.id]) { - var newStream = new window.MediaStream(stream.getTracks()); - pc._streams[stream.id] = newStream; - pc._reverseStreams[newStream.id] = stream; - stream = newStream; } - origAddStream.apply(pc, [stream]); - }; - - var origRemoveStream = window.RTCPeerConnection.prototype.removeStream; - window.RTCPeerConnection.prototype.removeStream = function(stream) { - var pc = this; - pc._streams = pc._streams || {}; - pc._reverseStreams = pc._reverseStreams || {}; - - origRemoveStream.apply(pc, [(pc._streams[stream.id] || stream)]); - delete pc._reverseStreams[(pc._streams[stream.id] ? - pc._streams[stream.id].id : stream.id)]; - delete pc._streams[stream.id]; + return _addTrack.apply(this, arguments); }; + } + if (!('removeStream' in window.RTCPeerConnection.prototype)) { + window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { + var _this2 = this; - window.RTCPeerConnection.prototype.addTrack = function(track, stream) { - var pc = this; - if (pc.signalingState === 'closed') { - throw new DOMException( - 'The RTCPeerConnection\'s signalingState is \'closed\'.', - 'InvalidStateError'); + if (!this._localStreams) { + this._localStreams = []; } - var streams = [].slice.call(arguments, 1); - if (streams.length !== 1 || - !streams[0].getTracks().find(function(t) { - return t === track; - })) { - // this is not fully correct but all we can manage without - // [[associated MediaStreams]] internal slot. - throw new DOMException( - 'The adapter.js addTrack polyfill only supports a single ' + - ' stream which is associated with the specified track.', - 'NotSupportedError'); + var index = this._localStreams.indexOf(stream); + if (index === -1) { + return; } - - var alreadyExists = pc.getSenders().find(function(s) { - return s.track === track; + this._localStreams.splice(index, 1); + var tracks = stream.getTracks(); + this.getSenders().forEach(function (sender) { + if (tracks.includes(sender.track)) { + _this2.removeTrack(sender); + } }); - if (alreadyExists) { - throw new DOMException('Track already exists.', - 'InvalidAccessError'); - } + }; + } +} - pc._streams = pc._streams || {}; - pc._reverseStreams = pc._reverseStreams || {}; - var oldStream = pc._streams[stream.id]; - if (oldStream) { - // this is using odd Chrome behaviour, use with caution: - // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815 - // Note: we rely on the high-level addTrack/dtmf shim to - // create the sender with a dtmf sender. - oldStream.addTrack(track); - - // Trigger ONN async. - Promise.resolve().then(function() { - pc.dispatchEvent(new Event('negotiationneeded')); - }); - } else { - var newStream = new window.MediaStream([track]); - pc._streams[stream.id] = newStream; - pc._reverseStreams[newStream.id] = stream; - pc.addStream(newStream); - } - return pc.getSenders().find(function(s) { - return s.track === track; - }); +function shimRemoteStreamsAPI(window) { + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) { + return; + } + if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) { + window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() { + return this._remoteStreams ? this._remoteStreams : []; }; + } + if (!('onaddstream' in window.RTCPeerConnection.prototype)) { + Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', { + get: function get() { + return this._onaddstream; + }, + set: function set(f) { + var _this3 = this; - // replace the internal stream id with the external one and - // vice versa. - function replaceInternalStreamId(pc, description) { - var sdp = description.sdp; - Object.keys(pc._reverseStreams || []).forEach(function(internalId) { - var externalStream = pc._reverseStreams[internalId]; - var internalStream = pc._streams[externalStream.id]; - sdp = sdp.replace(new RegExp(internalStream.id, 'g'), - externalStream.id); - }); - return new RTCSessionDescription({ - type: description.type, - sdp: sdp - }); - } - function replaceExternalStreamId(pc, description) { - var sdp = description.sdp; - Object.keys(pc._reverseStreams || []).forEach(function(internalId) { - var externalStream = pc._reverseStreams[internalId]; - var internalStream = pc._streams[externalStream.id]; - sdp = sdp.replace(new RegExp(externalStream.id, 'g'), - internalStream.id); - }); - return new RTCSessionDescription({ - type: description.type, - sdp: sdp - }); - } - ['createOffer', 'createAnswer'].forEach(function(method) { - var nativeMethod = window.RTCPeerConnection.prototype[method]; - window.RTCPeerConnection.prototype[method] = function() { - var pc = this; - var args = arguments; - var isLegacyCall = arguments.length && - typeof arguments[0] === 'function'; - if (isLegacyCall) { - return nativeMethod.apply(pc, [ - function(description) { - var desc = replaceInternalStreamId(pc, description); - args[0].apply(null, [desc]); - }, - function(err) { - if (args[1]) { - args[1].apply(null, err); - } - }, arguments[2] - ]); + if (this._onaddstream) { + this.removeEventListener('addstream', this._onaddstream); + this.removeEventListener('track', this._onaddstreampoly); } - return nativeMethod.apply(pc, arguments) - .then(function(description) { - return replaceInternalStreamId(pc, description); + this.addEventListener('addstream', this._onaddstream = f); + this.addEventListener('track', this._onaddstreampoly = function (e) { + e.streams.forEach(function (stream) { + if (!_this3._remoteStreams) { + _this3._remoteStreams = []; + } + if (_this3._remoteStreams.includes(stream)) { + return; + } + _this3._remoteStreams.push(stream); + var event = new Event('addstream'); + event.stream = stream; + _this3.dispatchEvent(event); + }); }); - }; + } }); - - var origSetLocalDescription = - window.RTCPeerConnection.prototype.setLocalDescription; - window.RTCPeerConnection.prototype.setLocalDescription = function() { + var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription; + window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() { var pc = this; - if (!arguments.length || !arguments[0].type) { - return origSetLocalDescription.apply(pc, arguments); - } - arguments[0] = replaceExternalStreamId(pc, arguments[0]); - return origSetLocalDescription.apply(pc, arguments); - }; - - // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier - - var origLocalDescription = Object.getOwnPropertyDescriptor( - window.RTCPeerConnection.prototype, 'localDescription'); - Object.defineProperty(window.RTCPeerConnection.prototype, - 'localDescription', { - get: function() { - var pc = this; - var description = origLocalDescription.get.apply(this); - if (description.type === '') { - return description; + if (!this._onaddstreampoly) { + this.addEventListener('track', this._onaddstreampoly = function (e) { + e.streams.forEach(function (stream) { + if (!pc._remoteStreams) { + pc._remoteStreams = []; } - return replaceInternalStreamId(pc, description); - } + if (pc._remoteStreams.indexOf(stream) >= 0) { + return; + } + pc._remoteStreams.push(stream); + var event = new Event('addstream'); + event.stream = stream; + pc.dispatchEvent(event); + }); }); - - window.RTCPeerConnection.prototype.removeTrack = function(sender) { - var pc = this; - if (pc.signalingState === 'closed') { - throw new DOMException( - 'The RTCPeerConnection\'s signalingState is \'closed\'.', - 'InvalidStateError'); - } - // We can not yet check for sender instanceof RTCRtpSender - // since we shim RTPSender. So we check if sender._pc is set. - if (!sender._pc) { - throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + - 'does not implement interface RTCRtpSender.', 'TypeError'); - } - var isLocal = sender._pc === pc; - if (!isLocal) { - throw new DOMException('Sender was not created by this connection.', - 'InvalidAccessError'); } + return origSetRemoteDescription.apply(pc, arguments); + }; + } +} - // Search for the native stream the senders track belongs to. - pc._streams = pc._streams || {}; - var stream; - Object.keys(pc._streams).forEach(function(streamid) { - var hasTrack = pc._streams[streamid].getTracks().find(function(track) { - return sender.track === track; - }); - if (hasTrack) { - stream = pc._streams[streamid]; - } - }); +function shimCallbacksAPI(window) { + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || !window.RTCPeerConnection) { + return; + } + var prototype = window.RTCPeerConnection.prototype; + var origCreateOffer = prototype.createOffer; + var origCreateAnswer = prototype.createAnswer; + var setLocalDescription = prototype.setLocalDescription; + var setRemoteDescription = prototype.setRemoteDescription; + var addIceCandidate = prototype.addIceCandidate; + + prototype.createOffer = function createOffer(successCallback, failureCallback) { + var options = arguments.length >= 2 ? arguments[2] : arguments[0]; + var promise = origCreateOffer.apply(this, [options]); + if (!failureCallback) { + return promise; + } + promise.then(successCallback, failureCallback); + return Promise.resolve(); + }; - if (stream) { - if (stream.getTracks().length === 1) { - // if this is the last track of the stream, remove the stream. This - // takes care of any shimmed _senders. - pc.removeStream(pc._reverseStreams[stream.id]); + prototype.createAnswer = function createAnswer(successCallback, failureCallback) { + var options = arguments.length >= 2 ? arguments[2] : arguments[0]; + var promise = origCreateAnswer.apply(this, [options]); + if (!failureCallback) { + return promise; + } + promise.then(successCallback, failureCallback); + return Promise.resolve(); + }; + + var withCallback = function withCallback(description, successCallback, failureCallback) { + var promise = setLocalDescription.apply(this, [description]); + if (!failureCallback) { + return promise; + } + promise.then(successCallback, failureCallback); + return Promise.resolve(); + }; + prototype.setLocalDescription = withCallback; + + withCallback = function withCallback(description, successCallback, failureCallback) { + var promise = setRemoteDescription.apply(this, [description]); + if (!failureCallback) { + return promise; + } + promise.then(successCallback, failureCallback); + return Promise.resolve(); + }; + prototype.setRemoteDescription = withCallback; + + withCallback = function withCallback(candidate, successCallback, failureCallback) { + var promise = addIceCandidate.apply(this, [candidate]); + if (!failureCallback) { + return promise; + } + promise.then(successCallback, failureCallback); + return Promise.resolve(); + }; + prototype.addIceCandidate = withCallback; +} + +function shimGetUserMedia(window) { + var navigator = window && window.navigator; + + if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) { + // shim not needed in Safari 12.1 + var mediaDevices = navigator.mediaDevices; + var _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices); + navigator.mediaDevices.getUserMedia = function (constraints) { + return _getUserMedia(shimConstraints(constraints)); + }; + } + + if (!navigator.getUserMedia && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) { + navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) { + navigator.mediaDevices.getUserMedia(constraints).then(cb, errcb); + }.bind(navigator); + } +} + +function shimConstraints(constraints) { + if (constraints && constraints.video !== undefined) { + return Object.assign({}, constraints, { video: utils.compactObject(constraints.video) }); + } + + return constraints; +} + +function shimRTCIceServerUrls(window) { + // migrate from non-spec RTCIceServer.url to RTCIceServer.urls + var OrigPeerConnection = window.RTCPeerConnection; + window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) { + if (pcConfig && pcConfig.iceServers) { + var newIceServers = []; + for (var i = 0; i < pcConfig.iceServers.length; i++) { + var server = pcConfig.iceServers[i]; + if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) { + utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls'); + server = JSON.parse(JSON.stringify(server)); + server.urls = server.url; + delete server.url; + newIceServers.push(server); } else { - // relying on the same odd chrome behaviour as above. - stream.removeTrack(sender.track); + newIceServers.push(pcConfig.iceServers[i]); } - pc.dispatchEvent(new Event('negotiationneeded')); } - }; - }, - - shimPeerConnection: function(window) { - var browserDetails = utils.detectBrowser(window); - - // The RTCPeerConnection object. - if (!window.RTCPeerConnection) { - window.RTCPeerConnection = function(pcConfig, pcConstraints) { - // Translate iceTransportPolicy to iceTransports, - // see https://code.google.com/p/webrtc/issues/detail?id=4869 - // this was fixed in M56 along with unprefixing RTCPeerConnection. - logging('PeerConnection'); - if (pcConfig && pcConfig.iceTransportPolicy) { - pcConfig.iceTransports = pcConfig.iceTransportPolicy; - } + pcConfig.iceServers = newIceServers; + } + return new OrigPeerConnection(pcConfig, pcConstraints); + }; + window.RTCPeerConnection.prototype = OrigPeerConnection.prototype; + // wrap static methods. Currently just generateCertificate. + if ('generateCertificate' in window.RTCPeerConnection) { + Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { + get: function get() { + return OrigPeerConnection.generateCertificate; + } + }); + } +} - return new window.webkitRTCPeerConnection(pcConfig, pcConstraints); - }; - window.RTCPeerConnection.prototype = - window.webkitRTCPeerConnection.prototype; - // wrap static methods. Currently just generateCertificate. - if (window.webkitRTCPeerConnection.generateCertificate) { - Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { - get: function() { - return window.webkitRTCPeerConnection.generateCertificate; - } - }); +function shimTrackEventTransceiver(window) { + // Add event.transceiver member over deprecated event.receiver + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) { + Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { + get: function get() { + return { receiver: this.receiver }; } - } else { - // migrate from non-spec RTCIceServer.url to RTCIceServer.urls - var OrigPeerConnection = window.RTCPeerConnection; - window.RTCPeerConnection = function(pcConfig, pcConstraints) { - if (pcConfig && pcConfig.iceServers) { - var newIceServers = []; - for (var i = 0; i < pcConfig.iceServers.length; i++) { - var server = pcConfig.iceServers[i]; - if (!server.hasOwnProperty('urls') && - server.hasOwnProperty('url')) { - utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls'); - server = JSON.parse(JSON.stringify(server)); - server.urls = server.url; - newIceServers.push(server); - } else { - newIceServers.push(pcConfig.iceServers[i]); - } + }); + } +} + +function shimCreateOfferLegacy(window) { + var origCreateOffer = window.RTCPeerConnection.prototype.createOffer; + window.RTCPeerConnection.prototype.createOffer = function createOffer(offerOptions) { + if (offerOptions) { + if (typeof offerOptions.offerToReceiveAudio !== 'undefined') { + // support bit values + offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio; + } + var audioTransceiver = this.getTransceivers().find(function (transceiver) { + return transceiver.receiver.track.kind === 'audio'; + }); + if (offerOptions.offerToReceiveAudio === false && audioTransceiver) { + if (audioTransceiver.direction === 'sendrecv') { + if (audioTransceiver.setDirection) { + audioTransceiver.setDirection('sendonly'); + } else { + audioTransceiver.direction = 'sendonly'; + } + } else if (audioTransceiver.direction === 'recvonly') { + if (audioTransceiver.setDirection) { + audioTransceiver.setDirection('inactive'); + } else { + audioTransceiver.direction = 'inactive'; } - pcConfig.iceServers = newIceServers; - } - return new OrigPeerConnection(pcConfig, pcConstraints); - }; - window.RTCPeerConnection.prototype = OrigPeerConnection.prototype; - // wrap static methods. Currently just generateCertificate. - Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { - get: function() { - return OrigPeerConnection.generateCertificate; } + } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) { + this.addTransceiver('audio'); + } + + if (typeof offerOptions.offerToReceiveVideo !== 'undefined') { + // support bit values + offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo; + } + var videoTransceiver = this.getTransceivers().find(function (transceiver) { + return transceiver.receiver.track.kind === 'video'; }); + if (offerOptions.offerToReceiveVideo === false && videoTransceiver) { + if (videoTransceiver.direction === 'sendrecv') { + if (videoTransceiver.setDirection) { + videoTransceiver.setDirection('sendonly'); + } else { + videoTransceiver.direction = 'sendonly'; + } + } else if (videoTransceiver.direction === 'recvonly') { + if (videoTransceiver.setDirection) { + videoTransceiver.setDirection('inactive'); + } else { + videoTransceiver.direction = 'inactive'; + } + } + } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) { + this.addTransceiver('video'); + } } + return origCreateOffer.apply(this, arguments); + }; +} - var origGetStats = window.RTCPeerConnection.prototype.getStats; - window.RTCPeerConnection.prototype.getStats = function(selector, - successCallback, errorCallback) { - var self = this; - var args = arguments; +},{"../utils":15}],15:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +/* eslint-env node */ +'use strict'; - // If selector is a function then we are in the old style stats so just - // pass back the original getStats format to avoid breaking old users. - if (arguments.length > 0 && typeof selector === 'function') { - return origGetStats.apply(this, arguments); - } +Object.defineProperty(exports, "__esModule", { + value: true +}); - // When spec-style getStats is supported, return those when called with - // either no arguments or the selector argument is null. - if (origGetStats.length === 0 && (arguments.length === 0 || - typeof arguments[0] !== 'function')) { - return origGetStats.apply(this, []); - } +var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; - var fixChromeStats_ = function(response) { - var standardReport = {}; - var reports = response.result(); - reports.forEach(function(report) { - var standardStats = { - id: report.id, - timestamp: report.timestamp, - type: { - localcandidate: 'local-candidate', - remotecandidate: 'remote-candidate' - }[report.type] || report.type - }; - report.names().forEach(function(name) { - standardStats[name] = report.stat(name); - }); - standardReport[standardStats.id] = standardStats; - }); +exports.extractVersion = extractVersion; +exports.wrapPeerConnectionEvent = wrapPeerConnectionEvent; +exports.disableLog = disableLog; +exports.disableWarnings = disableWarnings; +exports.log = log; +exports.deprecated = deprecated; +exports.detectBrowser = detectBrowser; +exports.compactObject = compactObject; +exports.walkStats = walkStats; +exports.filterStats = filterStats; - return standardReport; - }; +function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } - // shim getStats with maplike support - var makeMapStats = function(stats) { - return new Map(Object.keys(stats).map(function(key) { - return [key, stats[key]]; - })); - }; +var logDisabled_ = true; +var deprecationWarnings_ = true; - if (arguments.length >= 2) { - var successCallbackWrapper_ = function(response) { - args[1](makeMapStats(fixChromeStats_(response))); - }; +/** + * Extract browser version out of the provided user agent string. + * + * @param {!string} uastring userAgent string. + * @param {!string} expr Regular expression used as match criteria. + * @param {!number} pos position in the version string to be returned. + * @return {!number} browser version. + */ +function extractVersion(uastring, expr, pos) { + var match = uastring.match(expr); + return match && match.length >= pos && parseInt(match[pos], 10); +} - return origGetStats.apply(this, [successCallbackWrapper_, - arguments[0]]); +// Wraps the peerconnection event eventNameToWrap in a function +// which returns the modified event object (or false to prevent +// the event). +function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) { + if (!window.RTCPeerConnection) { + return; + } + var proto = window.RTCPeerConnection.prototype; + var nativeAddEventListener = proto.addEventListener; + proto.addEventListener = function (nativeEventName, cb) { + if (nativeEventName !== eventNameToWrap) { + return nativeAddEventListener.apply(this, arguments); + } + var wrappedCallback = function wrappedCallback(e) { + var modifiedEvent = wrapper(e); + if (modifiedEvent) { + cb(modifiedEvent); } - - // promise-support - return new Promise(function(resolve, reject) { - origGetStats.apply(self, [ - function(response) { - resolve(makeMapStats(fixChromeStats_(response))); - }, reject]); - }).then(successCallback, errorCallback); }; + this._eventMap = this._eventMap || {}; + this._eventMap[cb] = wrappedCallback; + return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]); + }; - // add promise support -- natively available in Chrome 51 - if (browserDetails.version < 51) { - ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] - .forEach(function(method) { - var nativeMethod = window.RTCPeerConnection.prototype[method]; - window.RTCPeerConnection.prototype[method] = function() { - var args = arguments; - var self = this; - var promise = new Promise(function(resolve, reject) { - nativeMethod.apply(self, [args[0], resolve, reject]); - }); - if (args.length < 2) { - return promise; - } - return promise.then(function() { - args[1].apply(null, []); - }, - function(err) { - if (args.length >= 3) { - args[2].apply(null, [err]); - } - }); - }; - }); + var nativeRemoveEventListener = proto.removeEventListener; + proto.removeEventListener = function (nativeEventName, cb) { + if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[cb]) { + return nativeRemoveEventListener.apply(this, arguments); } + var unwrappedCb = this._eventMap[cb]; + delete this._eventMap[cb]; + return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]); + }; - // promise support for createOffer and createAnswer. Available (without - // bugs) since M52: crbug/619289 - if (browserDetails.version < 52) { - ['createOffer', 'createAnswer'].forEach(function(method) { - var nativeMethod = window.RTCPeerConnection.prototype[method]; - window.RTCPeerConnection.prototype[method] = function() { - var self = this; - if (arguments.length < 1 || (arguments.length === 1 && - typeof arguments[0] === 'object')) { - var opts = arguments.length === 1 ? arguments[0] : undefined; - return new Promise(function(resolve, reject) { - nativeMethod.apply(self, [resolve, reject, opts]); - }); - } - return nativeMethod.apply(this, arguments); - }; - }); + Object.defineProperty(proto, 'on' + eventNameToWrap, { + get: function get() { + return this['_on' + eventNameToWrap]; + }, + set: function set(cb) { + if (this['_on' + eventNameToWrap]) { + this.removeEventListener(eventNameToWrap, this['_on' + eventNameToWrap]); + delete this['_on' + eventNameToWrap]; + } + if (cb) { + this.addEventListener(eventNameToWrap, this['_on' + eventNameToWrap] = cb); + } + }, + + enumerable: true, + configurable: true + }); +} + +function disableLog(bool) { + if (typeof bool !== 'boolean') { + return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.'); + } + logDisabled_ = bool; + return bool ? 'adapter.js logging disabled' : 'adapter.js logging enabled'; +} + +/** + * Disable or enable deprecation warnings + * @param {!boolean} bool set to true to disable warnings. + */ +function disableWarnings(bool) { + if (typeof bool !== 'boolean') { + return new Error('Argument type: ' + (typeof bool === 'undefined' ? 'undefined' : _typeof(bool)) + '. Please use a boolean.'); + } + deprecationWarnings_ = !bool; + return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled'); +} + +function log() { + if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object') { + if (logDisabled_) { + return; } + if (typeof console !== 'undefined' && typeof console.log === 'function') { + console.log.apply(console, arguments); + } + } +} - // shim implicit creation of RTCSessionDescription/RTCIceCandidate - ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] - .forEach(function(method) { - var nativeMethod = window.RTCPeerConnection.prototype[method]; - window.RTCPeerConnection.prototype[method] = function() { - arguments[0] = new ((method === 'addIceCandidate') ? - window.RTCIceCandidate : - window.RTCSessionDescription)(arguments[0]); - return nativeMethod.apply(this, arguments); - }; - }); +/** + * Shows a deprecation warning suggesting the modern and spec-compatible API. + */ +function deprecated(oldMethod, newMethod) { + if (!deprecationWarnings_) { + return; + } + console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.'); +} - // support for addIceCandidate(null or undefined) - var nativeAddIceCandidate = - window.RTCPeerConnection.prototype.addIceCandidate; - window.RTCPeerConnection.prototype.addIceCandidate = function() { - if (!arguments[0]) { - if (arguments[1]) { - arguments[1].apply(null); - } - return Promise.resolve(); - } - return nativeAddIceCandidate.apply(this, arguments); - }; +/** + * Browser detector. + * + * @return {object} result containing browser and version + * properties. + */ +function detectBrowser(window) { + var navigator = window.navigator; + + // Returned result object. + + var result = { browser: null, version: null }; + + // Fail early if it's not a browser + if (typeof window === 'undefined' || !window.navigator) { + result.browser = 'Not a browser.'; + return result; + } + + if (navigator.mozGetUserMedia) { + // Firefox. + result.browser = 'firefox'; + result.version = extractVersion(navigator.userAgent, /Firefox\/(\d+)\./, 1); + } else if (navigator.webkitGetUserMedia || window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer) { + // Chrome, Chromium, Webview, Opera. + // Version matches Chrome/WebRTC version. + // Chrome 74 removed webkitGetUserMedia on http as well so we need the + // more complicated fallback to webkitRTCPeerConnection. + result.browser = 'chrome'; + result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\/(\d+)\./, 2); + } else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { + // Edge. + result.browser = 'edge'; + result.version = extractVersion(navigator.userAgent, /Edge\/(\d+).(\d+)$/, 2); + } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) { + // Safari. + result.browser = 'safari'; + result.version = extractVersion(navigator.userAgent, /AppleWebKit\/(\d+)\./, 1); + result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype; + } else { + // Default fallthrough: not supported. + result.browser = 'Not a supported browser.'; + return result; } -}; + return result; +} -// Expose public methods. -module.exports = { - shimMediaStream: chromeShim.shimMediaStream, - shimOnTrack: chromeShim.shimOnTrack, - shimAddTrackRemoveTrack: chromeShim.shimAddTrackRemoveTrack, - shimGetSendersWithDtmf: chromeShim.shimGetSendersWithDtmf, - shimSourceObject: chromeShim.shimSourceObject, - shimPeerConnection: chromeShim.shimPeerConnection, - shimGetUserMedia: require('./getusermedia') -}; +/** + * Checks if something is an object. + * + * @param {*} val The something you want to check. + * @return true if val is an object, false otherwise. + */ +function isObject(val) { + return Object.prototype.toString.call(val) === '[object Object]'; +} + +/** + * Remove all empty objects and undefined values + * from a nested object -- an enhanced and vanilla version + * of Lodash's `compact`. + */ +function compactObject(data) { + if (!isObject(data)) { + return data; + } + + return Object.keys(data).reduce(function (accumulator, key) { + var isObj = isObject(data[key]); + var value = isObj ? compactObject(data[key]) : data[key]; + var isEmptyObject = isObj && !Object.keys(value).length; + if (value === undefined || isEmptyObject) { + return accumulator; + } + return Object.assign(accumulator, _defineProperty({}, key, value)); + }, {}); +} + +/* iterates the stats graph recursively. */ +function walkStats(stats, base, resultSet) { + if (!base || resultSet.has(base.id)) { + return; + } + resultSet.set(base.id, base); + Object.keys(base).forEach(function (name) { + if (name.endsWith('Id')) { + walkStats(stats, stats.get(base[name]), resultSet); + } else if (name.endsWith('Ids')) { + base[name].forEach(function (id) { + walkStats(stats, stats.get(id), resultSet); + }); + } + }); +} + +/* filter getStats for a sender/receiver track. */ +function filterStats(result, track, outbound) { + var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp'; + var filteredResult = new Map(); + if (track === null) { + return filteredResult; + } + var trackStats = []; + result.forEach(function (value) { + if (value.type === 'track' && value.trackIdentifier === track.id) { + trackStats.push(value); + } + }); + trackStats.forEach(function (trackStat) { + result.forEach(function (stats) { + if (stats.type === streamStatsType && stats.trackId === trackStat.id) { + walkStats(result, stats, filteredResult); + } + }); + }); + return filteredResult; +} -},{"../utils.js":13,"./getusermedia":6}],6:[function(require,module,exports){ +},{}],16:[function(require,module,exports){ /* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source @@ -3052,1399 +2763,2567 @@ module.exports = { */ /* eslint-env node */ 'use strict'; -var utils = require('../utils.js'); -var logging = utils.log; -// Expose public methods. -module.exports = function(window) { - var browserDetails = utils.detectBrowser(window); - var navigator = window && window.navigator; +var SDPUtils = require('sdp'); - var constraintsToChrome_ = function(c) { - if (typeof c !== 'object' || c.mandatory || c.optional) { - return c; +function fixStatsType(stat) { + return { + inboundrtp: 'inbound-rtp', + outboundrtp: 'outbound-rtp', + candidatepair: 'candidate-pair', + localcandidate: 'local-candidate', + remotecandidate: 'remote-candidate' + }[stat.type] || stat.type; +} + +function writeMediaSection(transceiver, caps, type, stream, dtlsRole) { + var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); + + // Map ICE parameters (ufrag, pwd) to SDP. + sdp += SDPUtils.writeIceParameters( + transceiver.iceGatherer.getLocalParameters()); + + // Map DTLS parameters to SDP. + sdp += SDPUtils.writeDtlsParameters( + transceiver.dtlsTransport.getLocalParameters(), + type === 'offer' ? 'actpass' : dtlsRole || 'active'); + + sdp += 'a=mid:' + transceiver.mid + '\r\n'; + + if (transceiver.rtpSender && transceiver.rtpReceiver) { + sdp += 'a=sendrecv\r\n'; + } else if (transceiver.rtpSender) { + sdp += 'a=sendonly\r\n'; + } else if (transceiver.rtpReceiver) { + sdp += 'a=recvonly\r\n'; + } else { + sdp += 'a=inactive\r\n'; + } + + if (transceiver.rtpSender) { + var trackId = transceiver.rtpSender._initialTrackId || + transceiver.rtpSender.track.id; + transceiver.rtpSender._initialTrackId = trackId; + // spec. + var msid = 'msid:' + (stream ? stream.id : '-') + ' ' + + trackId + '\r\n'; + sdp += 'a=' + msid; + // for Chrome. Legacy should no longer be required. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' ' + msid; + + // RTX + if (transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' ' + msid; + sdp += 'a=ssrc-group:FID ' + + transceiver.sendEncodingParameters[0].ssrc + ' ' + + transceiver.sendEncodingParameters[0].rtx.ssrc + + '\r\n'; } - var cc = {}; - Object.keys(c).forEach(function(key) { - if (key === 'require' || key === 'advanced' || key === 'mediaSource') { - return; - } - var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]}; - if (r.exact !== undefined && typeof r.exact === 'number') { - r.min = r.max = r.exact; - } - var oldname_ = function(prefix, name) { - if (prefix) { - return prefix + name.charAt(0).toUpperCase() + name.slice(1); - } - return (name === 'deviceId') ? 'sourceId' : name; - }; - if (r.ideal !== undefined) { - cc.optional = cc.optional || []; - var oc = {}; - if (typeof r.ideal === 'number') { - oc[oldname_('min', key)] = r.ideal; - cc.optional.push(oc); - oc = {}; - oc[oldname_('max', key)] = r.ideal; - cc.optional.push(oc); - } else { - oc[oldname_('', key)] = r.ideal; - cc.optional.push(oc); - } + } + // FIXME: this should be written by writeRtpDescription. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + } + return sdp; +} + +// Edge does not like +// 1) stun: filtered after 14393 unless ?transport=udp is present +// 2) turn: that does not have all of turn:host:port?transport=udp +// 3) turn: with ipv6 addresses +// 4) turn: occurring muliple times +function filterIceServers(iceServers, edgeVersion) { + var hasTurn = false; + iceServers = JSON.parse(JSON.stringify(iceServers)); + return iceServers.filter(function(server) { + if (server && (server.urls || server.url)) { + var urls = server.urls || server.url; + if (server.url && !server.urls) { + console.warn('RTCIceServer.url is deprecated! Use urls instead.'); } - if (r.exact !== undefined && typeof r.exact !== 'number') { - cc.mandatory = cc.mandatory || {}; - cc.mandatory[oldname_('', key)] = r.exact; - } else { - ['min', 'max'].forEach(function(mix) { - if (r[mix] !== undefined) { - cc.mandatory = cc.mandatory || {}; - cc.mandatory[oldname_(mix, key)] = r[mix]; - } - }); + var isString = typeof urls === 'string'; + if (isString) { + urls = [urls]; } - }); - if (c.advanced) { - cc.optional = (cc.optional || []).concat(c.advanced); + urls = urls.filter(function(url) { + var validTurn = url.indexOf('turn:') === 0 && + url.indexOf('transport=udp') !== -1 && + url.indexOf('turn:[') === -1 && + !hasTurn; + + if (validTurn) { + hasTurn = true; + return true; + } + return url.indexOf('stun:') === 0 && edgeVersion >= 14393 && + url.indexOf('?transport=udp') === -1; + }); + + delete server.url; + server.urls = isString ? urls[0] : urls; + return !!urls.length; } - return cc; + }); +} + +// Determines the intersection of local and remote capabilities. +function getCommonCapabilities(localCapabilities, remoteCapabilities) { + var commonCapabilities = { + codecs: [], + headerExtensions: [], + fecMechanisms: [] }; - var shimConstraints_ = function(constraints, func) { - constraints = JSON.parse(JSON.stringify(constraints)); - if (constraints && typeof constraints.audio === 'object') { - var remap = function(obj, a, b) { - if (a in obj && !(b in obj)) { - obj[b] = obj[a]; - delete obj[a]; - } - }; - constraints = JSON.parse(JSON.stringify(constraints)); - remap(constraints.audio, 'autoGainControl', 'googAutoGainControl'); - remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression'); - constraints.audio = constraintsToChrome_(constraints.audio); + var findCodecByPayloadType = function(pt, codecs) { + pt = parseInt(pt, 10); + for (var i = 0; i < codecs.length; i++) { + if (codecs[i].payloadType === pt || + codecs[i].preferredPayloadType === pt) { + return codecs[i]; + } } - if (constraints && typeof constraints.video === 'object') { - // Shim facingMode for mobile & surface pro. - var face = constraints.video.facingMode; - face = face && ((typeof face === 'object') ? face : {ideal: face}); - var getSupportedFacingModeLies = browserDetails.version < 66; + }; - if ((face && (face.exact === 'user' || face.exact === 'environment' || - face.ideal === 'user' || face.ideal === 'environment')) && - !(navigator.mediaDevices.getSupportedConstraints && - navigator.mediaDevices.getSupportedConstraints().facingMode && - !getSupportedFacingModeLies)) { - delete constraints.video.facingMode; - var matches; - if (face.exact === 'environment' || face.ideal === 'environment') { - matches = ['back', 'rear']; - } else if (face.exact === 'user' || face.ideal === 'user') { - matches = ['front']; + var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) { + var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs); + var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs); + return lCodec && rCodec && + lCodec.name.toLowerCase() === rCodec.name.toLowerCase(); + }; + + localCapabilities.codecs.forEach(function(lCodec) { + for (var i = 0; i < remoteCapabilities.codecs.length; i++) { + var rCodec = remoteCapabilities.codecs[i]; + if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && + lCodec.clockRate === rCodec.clockRate) { + if (lCodec.name.toLowerCase() === 'rtx' && + lCodec.parameters && rCodec.parameters.apt) { + // for RTX we need to find the local rtx that has a apt + // which points to the same local codec as the remote one. + if (!rtxCapabilityMatches(lCodec, rCodec, + localCapabilities.codecs, remoteCapabilities.codecs)) { + continue; + } } - if (matches) { - // Look for matches in label, or use last cam for back (typical). - return navigator.mediaDevices.enumerateDevices() - .then(function(devices) { - devices = devices.filter(function(d) { - return d.kind === 'videoinput'; - }); - var dev = devices.find(function(d) { - return matches.some(function(match) { - return d.label.toLowerCase().indexOf(match) !== -1; - }); - }); - if (!dev && devices.length && matches.indexOf('back') !== -1) { - dev = devices[devices.length - 1]; // more likely the back cam - } - if (dev) { - constraints.video.deviceId = face.exact ? {exact: dev.deviceId} : - {ideal: dev.deviceId}; + rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy + // number of channels is the highest common number of channels + rCodec.numChannels = Math.min(lCodec.numChannels, + rCodec.numChannels); + // push rCodec so we reply with offerer payload type + commonCapabilities.codecs.push(rCodec); + + // determine common feedback mechanisms + rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) { + for (var j = 0; j < lCodec.rtcpFeedback.length; j++) { + if (lCodec.rtcpFeedback[j].type === fb.type && + lCodec.rtcpFeedback[j].parameter === fb.parameter) { + return true; } - constraints.video = constraintsToChrome_(constraints.video); - logging('chrome: ' + JSON.stringify(constraints)); - return func(constraints); - }); - } + } + return false; + }); + // FIXME: also need to determine .parameters + // see https://github.com/openpeer/ortc/issues/569 + break; } - constraints.video = constraintsToChrome_(constraints.video); } - logging('chrome: ' + JSON.stringify(constraints)); - return func(constraints); - }; + }); - var shimError_ = function(e) { - return { - name: { - PermissionDeniedError: 'NotAllowedError', - InvalidStateError: 'NotReadableError', - DevicesNotFoundError: 'NotFoundError', - ConstraintNotSatisfiedError: 'OverconstrainedError', - TrackStartError: 'NotReadableError', - MediaDeviceFailedDueToShutdown: 'NotReadableError', - MediaDeviceKillSwitchOn: 'NotReadableError' - }[e.name] || e.name, - message: e.message, - constraint: e.constraintName, - toString: function() { - return this.name + (this.message && ': ') + this.message; + localCapabilities.headerExtensions.forEach(function(lHeaderExtension) { + for (var i = 0; i < remoteCapabilities.headerExtensions.length; + i++) { + var rHeaderExtension = remoteCapabilities.headerExtensions[i]; + if (lHeaderExtension.uri === rHeaderExtension.uri) { + commonCapabilities.headerExtensions.push(rHeaderExtension); + break; } - }; - }; + } + }); - var getUserMedia_ = function(constraints, onSuccess, onError) { - shimConstraints_(constraints, function(c) { - navigator.webkitGetUserMedia(c, onSuccess, function(e) { - if (onError) { - onError(shimError_(e)); - } + // FIXME: fecMechanisms + return commonCapabilities; +} + +// is action=setLocalDescription with type allowed in signalingState +function isActionAllowedInSignalingState(action, type, signalingState) { + return { + offer: { + setLocalDescription: ['stable', 'have-local-offer'], + setRemoteDescription: ['stable', 'have-remote-offer'] + }, + answer: { + setLocalDescription: ['have-remote-offer', 'have-local-pranswer'], + setRemoteDescription: ['have-local-offer', 'have-remote-pranswer'] + } + }[type][action].indexOf(signalingState) !== -1; +} + +function maybeAddCandidate(iceTransport, candidate) { + // Edge's internal representation adds some fields therefore + // not all fieldѕ are taken into account. + var alreadyAdded = iceTransport.getRemoteCandidates() + .find(function(remoteCandidate) { + return candidate.foundation === remoteCandidate.foundation && + candidate.ip === remoteCandidate.ip && + candidate.port === remoteCandidate.port && + candidate.priority === remoteCandidate.priority && + candidate.protocol === remoteCandidate.protocol && + candidate.type === remoteCandidate.type; }); - }); - }; + if (!alreadyAdded) { + iceTransport.addRemoteCandidate(candidate); + } + return !alreadyAdded; +} - navigator.getUserMedia = getUserMedia_; - // Returns the result of getUserMedia as a Promise. - var getUserMediaPromise_ = function(constraints) { - return new Promise(function(resolve, reject) { - navigator.getUserMedia(constraints, resolve, reject); - }); - }; +function makeError(name, description) { + var e = new Error(description); + e.name = name; + // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names + e.code = { + NotSupportedError: 9, + InvalidStateError: 11, + InvalidAccessError: 15, + TypeError: undefined, + OperationError: undefined + }[name]; + return e; +} - if (!navigator.mediaDevices) { - navigator.mediaDevices = { - getUserMedia: getUserMediaPromise_, - enumerateDevices: function() { - return new Promise(function(resolve) { - var kinds = {audio: 'audioinput', video: 'videoinput'}; - return window.MediaStreamTrack.getSources(function(devices) { - resolve(devices.map(function(device) { - return {label: device.label, - kind: kinds[device.kind], - deviceId: device.id, - groupId: ''}; - })); - }); - }); - }, - getSupportedConstraints: function() { - return { - deviceId: true, echoCancellation: true, facingMode: true, - frameRate: true, height: true, width: true - }; - } - }; +module.exports = function(window, edgeVersion) { + // https://w3c.github.io/mediacapture-main/#mediastream + // Helper function to add the track to the stream and + // dispatch the event ourselves. + function addTrackToStreamAndFireEvent(track, stream) { + stream.addTrack(track); + stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack', + {track: track})); } - // A shim for getUserMedia method on the mediaDevices object. - // TODO(KaptenJansson) remove once implemented in Chrome stable. - if (!navigator.mediaDevices.getUserMedia) { - navigator.mediaDevices.getUserMedia = function(constraints) { - return getUserMediaPromise_(constraints); - }; - } else { - // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia - // function which returns a Promise, it does not accept spec-style - // constraints. - var origGetUserMedia = navigator.mediaDevices.getUserMedia. - bind(navigator.mediaDevices); - navigator.mediaDevices.getUserMedia = function(cs) { - return shimConstraints_(cs, function(c) { - return origGetUserMedia(c).then(function(stream) { - if (c.audio && !stream.getAudioTracks().length || - c.video && !stream.getVideoTracks().length) { - stream.getTracks().forEach(function(track) { - track.stop(); - }); - throw new DOMException('', 'NotFoundError'); - } - return stream; - }, function(e) { - return Promise.reject(shimError_(e)); - }); - }); - }; + function removeTrackFromStreamAndFireEvent(track, stream) { + stream.removeTrack(track); + stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack', + {track: track})); } - // Dummy devicechange event methods. - // TODO(KaptenJansson) remove once implemented in Chrome stable. - if (typeof navigator.mediaDevices.addEventListener === 'undefined') { - navigator.mediaDevices.addEventListener = function() { - logging('Dummy mediaDevices.addEventListener called.'); - }; - } - if (typeof navigator.mediaDevices.removeEventListener === 'undefined') { - navigator.mediaDevices.removeEventListener = function() { - logging('Dummy mediaDevices.removeEventListener called.'); - }; + function fireAddTrack(pc, track, receiver, streams) { + var trackEvent = new Event('track'); + trackEvent.track = track; + trackEvent.receiver = receiver; + trackEvent.transceiver = {receiver: receiver}; + trackEvent.streams = streams; + window.setTimeout(function() { + pc._dispatchEvent('track', trackEvent); + }); } -}; - -},{"../utils.js":13}],7:[function(require,module,exports){ -/* - * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ - /* eslint-env node */ -'use strict'; - -var SDPUtils = require('sdp'); -var utils = require('./utils'); -// Wraps the peerconnection event eventNameToWrap in a function -// which returns the modified event object. -function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) { - if (!window.RTCPeerConnection) { - return; - } - var proto = window.RTCPeerConnection.prototype; - var nativeAddEventListener = proto.addEventListener; - proto.addEventListener = function(nativeEventName, cb) { - if (nativeEventName !== eventNameToWrap) { - return nativeAddEventListener.apply(this, arguments); - } - var wrappedCallback = function(e) { - cb(wrapper(e)); - }; - this._eventMap = this._eventMap || {}; - this._eventMap[cb] = wrappedCallback; - return nativeAddEventListener.apply(this, [nativeEventName, - wrappedCallback]); - }; + var RTCPeerConnection = function(config) { + var pc = this; - var nativeRemoveEventListener = proto.removeEventListener; - proto.removeEventListener = function(nativeEventName, cb) { - if (nativeEventName !== eventNameToWrap || !this._eventMap - || !this._eventMap[cb]) { - return nativeRemoveEventListener.apply(this, arguments); - } - var unwrappedCb = this._eventMap[cb]; - delete this._eventMap[cb]; - return nativeRemoveEventListener.apply(this, [nativeEventName, - unwrappedCb]); - }; + var _eventTarget = document.createDocumentFragment(); + ['addEventListener', 'removeEventListener', 'dispatchEvent'] + .forEach(function(method) { + pc[method] = _eventTarget[method].bind(_eventTarget); + }); - Object.defineProperty(proto, 'on' + eventNameToWrap, { - get: function() { - return this['_on' + eventNameToWrap]; - }, - set: function(cb) { - if (this['_on' + eventNameToWrap]) { - this.removeEventListener(eventNameToWrap, - this['_on' + eventNameToWrap]); - delete this['_on' + eventNameToWrap]; - } - if (cb) { - this.addEventListener(eventNameToWrap, - this['_on' + eventNameToWrap] = cb); - } - } - }); -} + this.canTrickleIceCandidates = null; -module.exports = { - shimRTCIceCandidate: function(window) { - // foundation is arbitrarily chosen as an indicator for full support for - // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface - if (window.RTCIceCandidate && 'foundation' in - window.RTCIceCandidate.prototype) { - return; - } + this.needNegotiation = false; - var NativeRTCIceCandidate = window.RTCIceCandidate; - window.RTCIceCandidate = function(args) { - // Remove the a= which shouldn't be part of the candidate string. - if (typeof args === 'object' && args.candidate && - args.candidate.indexOf('a=') === 0) { - args = JSON.parse(JSON.stringify(args)); - args.candidate = args.candidate.substr(2); - } + this.localStreams = []; + this.remoteStreams = []; - // Augment the native candidate with the parsed fields. - var nativeCandidate = new NativeRTCIceCandidate(args); - var parsedCandidate = SDPUtils.parseCandidate(args.candidate); - var augmentedCandidate = Object.assign(nativeCandidate, - parsedCandidate); + this._localDescription = null; + this._remoteDescription = null; - // Add a serializer that does not serialize the extra attributes. - augmentedCandidate.toJSON = function() { - return { - candidate: augmentedCandidate.candidate, - sdpMid: augmentedCandidate.sdpMid, - sdpMLineIndex: augmentedCandidate.sdpMLineIndex, - usernameFragment: augmentedCandidate.usernameFragment, - }; - }; - return augmentedCandidate; - }; + this.signalingState = 'stable'; + this.iceConnectionState = 'new'; + this.connectionState = 'new'; + this.iceGatheringState = 'new'; - // Hook up the augmented candidate in onicecandidate and - // addEventListener('icecandidate', ...) - wrapPeerConnectionEvent(window, 'icecandidate', function(e) { - if (e.candidate) { - Object.defineProperty(e, 'candidate', { - value: new window.RTCIceCandidate(e.candidate), - writable: 'false' - }); - } - return e; - }); - }, + config = JSON.parse(JSON.stringify(config || {})); - // shimCreateObjectURL must be called before shimSourceObject to avoid loop. + this.usingBundle = config.bundlePolicy === 'max-bundle'; + if (config.rtcpMuxPolicy === 'negotiate') { + throw(makeError('NotSupportedError', + 'rtcpMuxPolicy \'negotiate\' is not supported')); + } else if (!config.rtcpMuxPolicy) { + config.rtcpMuxPolicy = 'require'; + } - shimCreateObjectURL: function(window) { - var URL = window && window.URL; + switch (config.iceTransportPolicy) { + case 'all': + case 'relay': + break; + default: + config.iceTransportPolicy = 'all'; + break; + } - if (!(typeof window === 'object' && window.HTMLMediaElement && - 'srcObject' in window.HTMLMediaElement.prototype && - URL.createObjectURL && URL.revokeObjectURL)) { - // Only shim CreateObjectURL using srcObject if srcObject exists. - return undefined; + switch (config.bundlePolicy) { + case 'balanced': + case 'max-compat': + case 'max-bundle': + break; + default: + config.bundlePolicy = 'balanced'; + break; } - var nativeCreateObjectURL = URL.createObjectURL.bind(URL); - var nativeRevokeObjectURL = URL.revokeObjectURL.bind(URL); - var streams = new Map(), newId = 0; + config.iceServers = filterIceServers(config.iceServers || [], edgeVersion); - URL.createObjectURL = function(stream) { - if ('getTracks' in stream) { - var url = 'polyblob:' + (++newId); - streams.set(url, stream); - utils.deprecated('URL.createObjectURL(stream)', - 'elem.srcObject = stream'); - return url; + this._iceGatherers = []; + if (config.iceCandidatePoolSize) { + for (var i = config.iceCandidatePoolSize; i > 0; i--) { + this._iceGatherers.push(new window.RTCIceGatherer({ + iceServers: config.iceServers, + gatherPolicy: config.iceTransportPolicy + })); } - return nativeCreateObjectURL(stream); - }; - URL.revokeObjectURL = function(url) { - nativeRevokeObjectURL(url); - streams.delete(url); - }; + } else { + config.iceCandidatePoolSize = 0; + } - var dsc = Object.getOwnPropertyDescriptor(window.HTMLMediaElement.prototype, - 'src'); - Object.defineProperty(window.HTMLMediaElement.prototype, 'src', { - get: function() { - return dsc.get.apply(this); - }, - set: function(url) { - this.srcObject = streams.get(url) || null; - return dsc.set.apply(this, [url]); - } - }); + this._config = config; - var nativeSetAttribute = window.HTMLMediaElement.prototype.setAttribute; - window.HTMLMediaElement.prototype.setAttribute = function() { - if (arguments.length === 2 && - ('' + arguments[0]).toLowerCase() === 'src') { - this.srcObject = streams.get(arguments[1]) || null; - } - return nativeSetAttribute.apply(this, arguments); - }; - } -}; + // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ... + // everything that is needed to describe a SDP m-line. + this.transceivers = []; -},{"./utils":13,"sdp":2}],8:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ - /* eslint-env node */ -'use strict'; + this._sdpSessionId = SDPUtils.generateSessionId(); + this._sdpSessionVersion = 0; -var utils = require('../utils'); -var shimRTCPeerConnection = require('rtcpeerconnection-shim'); + this._dtlsRole = undefined; // role for a=setup to use in answers. -module.exports = { - shimGetUserMedia: require('./getusermedia'), - shimPeerConnection: function(window) { - var browserDetails = utils.detectBrowser(window); + this._isClosed = false; + }; - if (window.RTCIceGatherer) { - // ORTC defines an RTCIceCandidate object but no constructor. - // Not implemented in Edge. - if (!window.RTCIceCandidate) { - window.RTCIceCandidate = function(args) { - return args; - }; - } - // ORTC does not have a session description object but - // other browsers (i.e. Chrome) that will support both PC and ORTC - // in the future might have this defined already. - if (!window.RTCSessionDescription) { - window.RTCSessionDescription = function(args) { - return args; - }; - } - // this adds an additional event listener to MediaStrackTrack that signals - // when a tracks enabled property was changed. Workaround for a bug in - // addStream, see below. No longer required in 15025+ - if (browserDetails.version < 15025) { - var origMSTEnabled = Object.getOwnPropertyDescriptor( - window.MediaStreamTrack.prototype, 'enabled'); - Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', { - set: function(value) { - origMSTEnabled.set.call(this, value); - var ev = new Event('enabled'); - ev.enabled = value; - this.dispatchEvent(ev); - } - }); - } + Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', { + configurable: true, + get: function() { + return this._localDescription; } - - // ORTC defines the DTMF sender a bit different. - // https://github.com/w3c/ortc/issues/714 - if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) { - Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', { - get: function() { - if (this._dtmf === undefined) { - if (this.track.kind === 'audio') { - this._dtmf = new window.RTCDtmfSender(this); - } else if (this.track.kind === 'video') { - this._dtmf = null; - } - } - return this._dtmf; - } - }); + }); + Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', { + configurable: true, + get: function() { + return this._remoteDescription; } + }); - window.RTCPeerConnection = - shimRTCPeerConnection(window, browserDetails.version); - }, - shimReplaceTrack: function(window) { - // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614 - if (window.RTCRtpSender && - !('replaceTrack' in window.RTCRtpSender.prototype)) { - window.RTCRtpSender.prototype.replaceTrack = - window.RTCRtpSender.prototype.setTrack; + // set up event handlers on prototype + RTCPeerConnection.prototype.onicecandidate = null; + RTCPeerConnection.prototype.onaddstream = null; + RTCPeerConnection.prototype.ontrack = null; + RTCPeerConnection.prototype.onremovestream = null; + RTCPeerConnection.prototype.onsignalingstatechange = null; + RTCPeerConnection.prototype.oniceconnectionstatechange = null; + RTCPeerConnection.prototype.onconnectionstatechange = null; + RTCPeerConnection.prototype.onicegatheringstatechange = null; + RTCPeerConnection.prototype.onnegotiationneeded = null; + RTCPeerConnection.prototype.ondatachannel = null; + + RTCPeerConnection.prototype._dispatchEvent = function(name, event) { + if (this._isClosed) { + return; } - } -}; - -},{"../utils":13,"./getusermedia":9,"rtcpeerconnection-shim":1}],9:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ - /* eslint-env node */ -'use strict'; - -// Expose public methods. -module.exports = function(window) { - var navigator = window && window.navigator; + this.dispatchEvent(event); + if (typeof this['on' + name] === 'function') { + this['on' + name](event); + } + }; - var shimError_ = function(e) { - return { - name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name, - message: e.message, - constraint: e.constraint, - toString: function() { - return this.name; - } - }; + RTCPeerConnection.prototype._emitGatheringStateChange = function() { + var event = new Event('icegatheringstatechange'); + this._dispatchEvent('icegatheringstatechange', event); }; - // getUserMedia error shim. - var origGetUserMedia = navigator.mediaDevices.getUserMedia. - bind(navigator.mediaDevices); - navigator.mediaDevices.getUserMedia = function(c) { - return origGetUserMedia(c).catch(function(e) { - return Promise.reject(shimError_(e)); - }); + RTCPeerConnection.prototype.getConfiguration = function() { + return this._config; }; -}; -},{}],10:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ - /* eslint-env node */ -'use strict'; + RTCPeerConnection.prototype.getLocalStreams = function() { + return this.localStreams; + }; -var utils = require('../utils'); + RTCPeerConnection.prototype.getRemoteStreams = function() { + return this.remoteStreams; + }; -var firefoxShim = { - shimOnTrack: function(window) { - if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in - window.RTCPeerConnection.prototype)) { - Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { - get: function() { - return this._ontrack; - }, - set: function(f) { - if (this._ontrack) { - this.removeEventListener('track', this._ontrack); - this.removeEventListener('addstream', this._ontrackpoly); - } - this.addEventListener('track', this._ontrack = f); - this.addEventListener('addstream', this._ontrackpoly = function(e) { - e.stream.getTracks().forEach(function(track) { - var event = new Event('track'); - event.track = track; - event.receiver = {track: track}; - event.transceiver = {receiver: event.receiver}; - event.streams = [e.stream]; - this.dispatchEvent(event); - }.bind(this)); - }.bind(this)); - } - }); + // internal helper to create a transceiver object. + // (which is not yet the same as the WebRTC 1.0 transceiver) + RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) { + var hasBundleTransport = this.transceivers.length > 0; + var transceiver = { + track: null, + iceGatherer: null, + iceTransport: null, + dtlsTransport: null, + localCapabilities: null, + remoteCapabilities: null, + rtpSender: null, + rtpReceiver: null, + kind: kind, + mid: null, + sendEncodingParameters: null, + recvEncodingParameters: null, + stream: null, + associatedRemoteMediaStreams: [], + wantReceive: true + }; + if (this.usingBundle && hasBundleTransport) { + transceiver.iceTransport = this.transceivers[0].iceTransport; + transceiver.dtlsTransport = this.transceivers[0].dtlsTransport; + } else { + var transports = this._createIceAndDtlsTransports(); + transceiver.iceTransport = transports.iceTransport; + transceiver.dtlsTransport = transports.dtlsTransport; } - if (typeof window === 'object' && window.RTCTrackEvent && - ('receiver' in window.RTCTrackEvent.prototype) && - !('transceiver' in window.RTCTrackEvent.prototype)) { - Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { - get: function() { - return {receiver: this.receiver}; - } - }); + if (!doNotAdd) { + this.transceivers.push(transceiver); } - }, - - shimSourceObject: function(window) { - // Firefox has supported mozSrcObject since FF22, unprefixed in 42. - if (typeof window === 'object') { - if (window.HTMLMediaElement && - !('srcObject' in window.HTMLMediaElement.prototype)) { - // Shim the srcObject property, once, when HTMLMediaElement is found. - Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', { - get: function() { - return this.mozSrcObject; - }, - set: function(stream) { - this.mozSrcObject = stream; - } - }); - } + return transceiver; + }; + + RTCPeerConnection.prototype.addTrack = function(track, stream) { + if (this._isClosed) { + throw makeError('InvalidStateError', + 'Attempted to call addTrack on a closed peerconnection.'); } - }, - - shimPeerConnection: function(window) { - var browserDetails = utils.detectBrowser(window); - - if (typeof window !== 'object' || !(window.RTCPeerConnection || - window.mozRTCPeerConnection)) { - return; // probably media.peerconnection.enabled=false in about:config - } - // The RTCPeerConnection object. - if (!window.RTCPeerConnection) { - window.RTCPeerConnection = function(pcConfig, pcConstraints) { - if (browserDetails.version < 38) { - // .urls is not supported in FF < 38. - // create RTCIceServers with a single url. - if (pcConfig && pcConfig.iceServers) { - var newIceServers = []; - for (var i = 0; i < pcConfig.iceServers.length; i++) { - var server = pcConfig.iceServers[i]; - if (server.hasOwnProperty('urls')) { - for (var j = 0; j < server.urls.length; j++) { - var newServer = { - url: server.urls[j] - }; - if (server.urls[j].indexOf('turn') === 0) { - newServer.username = server.username; - newServer.credential = server.credential; - } - newIceServers.push(newServer); - } - } else { - newIceServers.push(pcConfig.iceServers[i]); - } - } - pcConfig.iceServers = newIceServers; - } - } - return new window.mozRTCPeerConnection(pcConfig, pcConstraints); - }; - window.RTCPeerConnection.prototype = - window.mozRTCPeerConnection.prototype; - - // wrap static methods. Currently just generateCertificate. - if (window.mozRTCPeerConnection.generateCertificate) { - Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { - get: function() { - return window.mozRTCPeerConnection.generateCertificate; - } - }); - } - window.RTCSessionDescription = window.mozRTCSessionDescription; - window.RTCIceCandidate = window.mozRTCIceCandidate; + var alreadyExists = this.transceivers.find(function(s) { + return s.track === track; + }); + + if (alreadyExists) { + throw makeError('InvalidAccessError', 'Track already exists.'); } - // shim away need for obsolete RTCIceCandidate/RTCSessionDescription. - ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] - .forEach(function(method) { - var nativeMethod = window.RTCPeerConnection.prototype[method]; - window.RTCPeerConnection.prototype[method] = function() { - arguments[0] = new ((method === 'addIceCandidate') ? - window.RTCIceCandidate : - window.RTCSessionDescription)(arguments[0]); - return nativeMethod.apply(this, arguments); - }; + var transceiver; + for (var i = 0; i < this.transceivers.length; i++) { + if (!this.transceivers[i].track && + this.transceivers[i].kind === track.kind) { + transceiver = this.transceivers[i]; + } + } + if (!transceiver) { + transceiver = this._createTransceiver(track.kind); + } + + this._maybeFireNegotiationNeeded(); + + if (this.localStreams.indexOf(stream) === -1) { + this.localStreams.push(stream); + } + + transceiver.track = track; + transceiver.stream = stream; + transceiver.rtpSender = new window.RTCRtpSender(track, + transceiver.dtlsTransport); + return transceiver.rtpSender; + }; + + RTCPeerConnection.prototype.addStream = function(stream) { + var pc = this; + if (edgeVersion >= 15025) { + stream.getTracks().forEach(function(track) { + pc.addTrack(track, stream); + }); + } else { + // Clone is necessary for local demos mostly, attaching directly + // to two different senders does not work (build 10547). + // Fixed in 15025 (or earlier) + var clonedStream = stream.clone(); + stream.getTracks().forEach(function(track, idx) { + var clonedTrack = clonedStream.getTracks()[idx]; + track.addEventListener('enabled', function(event) { + clonedTrack.enabled = event.enabled; }); + }); + clonedStream.getTracks().forEach(function(track) { + pc.addTrack(track, clonedStream); + }); + } + }; - // support for addIceCandidate(null or undefined) - var nativeAddIceCandidate = - window.RTCPeerConnection.prototype.addIceCandidate; - window.RTCPeerConnection.prototype.addIceCandidate = function() { - if (!arguments[0]) { - if (arguments[1]) { - arguments[1].apply(null); + RTCPeerConnection.prototype.removeTrack = function(sender) { + if (this._isClosed) { + throw makeError('InvalidStateError', + 'Attempted to call removeTrack on a closed peerconnection.'); + } + + if (!(sender instanceof window.RTCRtpSender)) { + throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' + + 'does not implement interface RTCRtpSender.'); + } + + var transceiver = this.transceivers.find(function(t) { + return t.rtpSender === sender; + }); + + if (!transceiver) { + throw makeError('InvalidAccessError', + 'Sender was not created by this connection.'); + } + var stream = transceiver.stream; + + transceiver.rtpSender.stop(); + transceiver.rtpSender = null; + transceiver.track = null; + transceiver.stream = null; + + // remove the stream from the set of local streams + var localStreams = this.transceivers.map(function(t) { + return t.stream; + }); + if (localStreams.indexOf(stream) === -1 && + this.localStreams.indexOf(stream) > -1) { + this.localStreams.splice(this.localStreams.indexOf(stream), 1); + } + + this._maybeFireNegotiationNeeded(); + }; + + RTCPeerConnection.prototype.removeStream = function(stream) { + var pc = this; + stream.getTracks().forEach(function(track) { + var sender = pc.getSenders().find(function(s) { + return s.track === track; + }); + if (sender) { + pc.removeTrack(sender); + } + }); + }; + + RTCPeerConnection.prototype.getSenders = function() { + return this.transceivers.filter(function(transceiver) { + return !!transceiver.rtpSender; + }) + .map(function(transceiver) { + return transceiver.rtpSender; + }); + }; + + RTCPeerConnection.prototype.getReceivers = function() { + return this.transceivers.filter(function(transceiver) { + return !!transceiver.rtpReceiver; + }) + .map(function(transceiver) { + return transceiver.rtpReceiver; + }); + }; + + + RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex, + usingBundle) { + var pc = this; + if (usingBundle && sdpMLineIndex > 0) { + return this.transceivers[0].iceGatherer; + } else if (this._iceGatherers.length) { + return this._iceGatherers.shift(); + } + var iceGatherer = new window.RTCIceGatherer({ + iceServers: this._config.iceServers, + gatherPolicy: this._config.iceTransportPolicy + }); + Object.defineProperty(iceGatherer, 'state', + {value: 'new', writable: true} + ); + + this.transceivers[sdpMLineIndex].bufferedCandidateEvents = []; + this.transceivers[sdpMLineIndex].bufferCandidates = function(event) { + var end = !event.candidate || Object.keys(event.candidate).length === 0; + // polyfill since RTCIceGatherer.state is not implemented in + // Edge 10547 yet. + iceGatherer.state = end ? 'completed' : 'gathering'; + if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) { + pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event); + } + }; + iceGatherer.addEventListener('localcandidate', + this.transceivers[sdpMLineIndex].bufferCandidates); + return iceGatherer; + }; + + // start gathering from an RTCIceGatherer. + RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) { + var pc = this; + var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; + if (iceGatherer.onlocalcandidate) { + return; + } + var bufferedCandidateEvents = + this.transceivers[sdpMLineIndex].bufferedCandidateEvents; + this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null; + iceGatherer.removeEventListener('localcandidate', + this.transceivers[sdpMLineIndex].bufferCandidates); + iceGatherer.onlocalcandidate = function(evt) { + if (pc.usingBundle && sdpMLineIndex > 0) { + // if we know that we use bundle we can drop candidates with + // ѕdpMLineIndex > 0. If we don't do this then our state gets + // confused since we dispose the extra ice gatherer. + return; + } + var event = new Event('icecandidate'); + event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex}; + + var cand = evt.candidate; + // Edge emits an empty object for RTCIceCandidateComplete‥ + var end = !cand || Object.keys(cand).length === 0; + if (end) { + // polyfill since RTCIceGatherer.state is not implemented in + // Edge 10547 yet. + if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') { + iceGatherer.state = 'completed'; } - return Promise.resolve(); + } else { + if (iceGatherer.state === 'new') { + iceGatherer.state = 'gathering'; + } + // RTCIceCandidate doesn't have a component, needs to be added + cand.component = 1; + // also the usernameFragment. TODO: update SDP to take both variants. + cand.ufrag = iceGatherer.getLocalParameters().usernameFragment; + + var serializedCandidate = SDPUtils.writeCandidate(cand); + event.candidate = Object.assign(event.candidate, + SDPUtils.parseCandidate(serializedCandidate)); + + event.candidate.candidate = serializedCandidate; + event.candidate.toJSON = function() { + return { + candidate: event.candidate.candidate, + sdpMid: event.candidate.sdpMid, + sdpMLineIndex: event.candidate.sdpMLineIndex, + usernameFragment: event.candidate.usernameFragment + }; + }; + } + + // update local description. + var sections = SDPUtils.getMediaSections(pc._localDescription.sdp); + if (!end) { + sections[event.candidate.sdpMLineIndex] += + 'a=' + event.candidate.candidate + '\r\n'; + } else { + sections[event.candidate.sdpMLineIndex] += + 'a=end-of-candidates\r\n'; + } + pc._localDescription.sdp = + SDPUtils.getDescription(pc._localDescription.sdp) + + sections.join(''); + var complete = pc.transceivers.every(function(transceiver) { + return transceiver.iceGatherer && + transceiver.iceGatherer.state === 'completed'; + }); + + if (pc.iceGatheringState !== 'gathering') { + pc.iceGatheringState = 'gathering'; + pc._emitGatheringStateChange(); + } + + // Emit candidate. Also emit null candidate when all gatherers are + // complete. + if (!end) { + pc._dispatchEvent('icecandidate', event); + } + if (complete) { + pc._dispatchEvent('icecandidate', new Event('icecandidate')); + pc.iceGatheringState = 'complete'; + pc._emitGatheringStateChange(); } - return nativeAddIceCandidate.apply(this, arguments); }; - // shim getStats with maplike support - var makeMapStats = function(stats) { - var map = new Map(); - Object.keys(stats).forEach(function(key) { - map.set(key, stats[key]); - map[key] = stats[key]; + // emit already gathered candidates. + window.setTimeout(function() { + bufferedCandidateEvents.forEach(function(e) { + iceGatherer.onlocalcandidate(e); }); - return map; + }, 0); + }; + + // Create ICE transport and DTLS transport. + RTCPeerConnection.prototype._createIceAndDtlsTransports = function() { + var pc = this; + var iceTransport = new window.RTCIceTransport(null); + iceTransport.onicestatechange = function() { + pc._updateIceConnectionState(); + pc._updateConnectionState(); }; - var modernStatsTypes = { - inboundrtp: 'inbound-rtp', - outboundrtp: 'outbound-rtp', - candidatepair: 'candidate-pair', - localcandidate: 'local-candidate', - remotecandidate: 'remote-candidate' + var dtlsTransport = new window.RTCDtlsTransport(iceTransport); + dtlsTransport.ondtlsstatechange = function() { + pc._updateConnectionState(); + }; + dtlsTransport.onerror = function() { + // onerror does not set state to failed by itself. + Object.defineProperty(dtlsTransport, 'state', + {value: 'failed', writable: true}); + pc._updateConnectionState(); }; - var nativeGetStats = window.RTCPeerConnection.prototype.getStats; - window.RTCPeerConnection.prototype.getStats = function( - selector, - onSucc, - onErr - ) { - return nativeGetStats.apply(this, [selector || null]) - .then(function(stats) { - if (browserDetails.version < 48) { - stats = makeMapStats(stats); - } - if (browserDetails.version < 53 && !onSucc) { - // Shim only promise getStats with spec-hyphens in type names - // Leave callback version alone; misc old uses of forEach before Map - try { - stats.forEach(function(stat) { - stat.type = modernStatsTypes[stat.type] || stat.type; - }); - } catch (e) { - if (e.name !== 'TypeError') { - throw e; - } - // Avoid TypeError: "type" is read-only, in old versions. 34-43ish - stats.forEach(function(stat, i) { - stats.set(i, Object.assign({}, stat, { - type: modernStatsTypes[stat.type] || stat.type - })); - }); - } - } - return stats; - }) - .then(onSucc, onErr); + return { + iceTransport: iceTransport, + dtlsTransport: dtlsTransport }; - } + }; + + // Destroy ICE gatherer, ICE transport and DTLS transport. + // Without triggering the callbacks. + RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function( + sdpMLineIndex) { + var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; + if (iceGatherer) { + delete iceGatherer.onlocalcandidate; + delete this.transceivers[sdpMLineIndex].iceGatherer; + } + var iceTransport = this.transceivers[sdpMLineIndex].iceTransport; + if (iceTransport) { + delete iceTransport.onicestatechange; + delete this.transceivers[sdpMLineIndex].iceTransport; + } + var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport; + if (dtlsTransport) { + delete dtlsTransport.ondtlsstatechange; + delete dtlsTransport.onerror; + delete this.transceivers[sdpMLineIndex].dtlsTransport; + } + }; + + // Start the RTP Sender and Receiver for a transceiver. + RTCPeerConnection.prototype._transceive = function(transceiver, + send, recv) { + var params = getCommonCapabilities(transceiver.localCapabilities, + transceiver.remoteCapabilities); + if (send && transceiver.rtpSender) { + params.encodings = transceiver.sendEncodingParameters; + params.rtcp = { + cname: SDPUtils.localCName, + compound: transceiver.rtcpParameters.compound + }; + if (transceiver.recvEncodingParameters.length) { + params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc; + } + transceiver.rtpSender.send(params); + } + if (recv && transceiver.rtpReceiver && params.codecs.length > 0) { + // remove RTX field in Edge 14942 + if (transceiver.kind === 'video' + && transceiver.recvEncodingParameters + && edgeVersion < 15019) { + transceiver.recvEncodingParameters.forEach(function(p) { + delete p.rtx; + }); + } + if (transceiver.recvEncodingParameters.length) { + params.encodings = transceiver.recvEncodingParameters; + } else { + params.encodings = [{}]; + } + params.rtcp = { + compound: transceiver.rtcpParameters.compound + }; + if (transceiver.rtcpParameters.cname) { + params.rtcp.cname = transceiver.rtcpParameters.cname; + } + if (transceiver.sendEncodingParameters.length) { + params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc; + } + transceiver.rtpReceiver.receive(params); + } + }; + + RTCPeerConnection.prototype.setLocalDescription = function(description) { + var pc = this; + + // Note: pranswer is not supported. + if (['offer', 'answer'].indexOf(description.type) === -1) { + return Promise.reject(makeError('TypeError', + 'Unsupported type "' + description.type + '"')); + } + + if (!isActionAllowedInSignalingState('setLocalDescription', + description.type, pc.signalingState) || pc._isClosed) { + return Promise.reject(makeError('InvalidStateError', + 'Can not set local ' + description.type + + ' in state ' + pc.signalingState)); + } + + var sections; + var sessionpart; + if (description.type === 'offer') { + // VERY limited support for SDP munging. Limited to: + // * changing the order of codecs + sections = SDPUtils.splitSections(description.sdp); + sessionpart = sections.shift(); + sections.forEach(function(mediaSection, sdpMLineIndex) { + var caps = SDPUtils.parseRtpParameters(mediaSection); + pc.transceivers[sdpMLineIndex].localCapabilities = caps; + }); + + pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { + pc._gather(transceiver.mid, sdpMLineIndex); + }); + } else if (description.type === 'answer') { + sections = SDPUtils.splitSections(pc._remoteDescription.sdp); + sessionpart = sections.shift(); + var isIceLite = SDPUtils.matchPrefix(sessionpart, + 'a=ice-lite').length > 0; + sections.forEach(function(mediaSection, sdpMLineIndex) { + var transceiver = pc.transceivers[sdpMLineIndex]; + var iceGatherer = transceiver.iceGatherer; + var iceTransport = transceiver.iceTransport; + var dtlsTransport = transceiver.dtlsTransport; + var localCapabilities = transceiver.localCapabilities; + var remoteCapabilities = transceiver.remoteCapabilities; + + // treat bundle-only as not-rejected. + var rejected = SDPUtils.isRejected(mediaSection) && + SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0; + + if (!rejected && !transceiver.rejected) { + var remoteIceParameters = SDPUtils.getIceParameters( + mediaSection, sessionpart); + var remoteDtlsParameters = SDPUtils.getDtlsParameters( + mediaSection, sessionpart); + if (isIceLite) { + remoteDtlsParameters.role = 'server'; + } + + if (!pc.usingBundle || sdpMLineIndex === 0) { + pc._gather(transceiver.mid, sdpMLineIndex); + if (iceTransport.state === 'new') { + iceTransport.start(iceGatherer, remoteIceParameters, + isIceLite ? 'controlling' : 'controlled'); + } + if (dtlsTransport.state === 'new') { + dtlsTransport.start(remoteDtlsParameters); + } + } + + // Calculate intersection of capabilities. + var params = getCommonCapabilities(localCapabilities, + remoteCapabilities); + + // Start the RTCRtpSender. The RTCRtpReceiver for this + // transceiver has already been started in setRemoteDescription. + pc._transceive(transceiver, + params.codecs.length > 0, + false); + } + }); + } + + pc._localDescription = { + type: description.type, + sdp: description.sdp + }; + if (description.type === 'offer') { + pc._updateSignalingState('have-local-offer'); + } else { + pc._updateSignalingState('stable'); + } + + return Promise.resolve(); + }; + + RTCPeerConnection.prototype.setRemoteDescription = function(description) { + var pc = this; + + // Note: pranswer is not supported. + if (['offer', 'answer'].indexOf(description.type) === -1) { + return Promise.reject(makeError('TypeError', + 'Unsupported type "' + description.type + '"')); + } + + if (!isActionAllowedInSignalingState('setRemoteDescription', + description.type, pc.signalingState) || pc._isClosed) { + return Promise.reject(makeError('InvalidStateError', + 'Can not set remote ' + description.type + + ' in state ' + pc.signalingState)); + } + + var streams = {}; + pc.remoteStreams.forEach(function(stream) { + streams[stream.id] = stream; + }); + var receiverList = []; + var sections = SDPUtils.splitSections(description.sdp); + var sessionpart = sections.shift(); + var isIceLite = SDPUtils.matchPrefix(sessionpart, + 'a=ice-lite').length > 0; + var usingBundle = SDPUtils.matchPrefix(sessionpart, + 'a=group:BUNDLE ').length > 0; + pc.usingBundle = usingBundle; + var iceOptions = SDPUtils.matchPrefix(sessionpart, + 'a=ice-options:')[0]; + if (iceOptions) { + pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ') + .indexOf('trickle') >= 0; + } else { + pc.canTrickleIceCandidates = false; + } + + sections.forEach(function(mediaSection, sdpMLineIndex) { + var lines = SDPUtils.splitLines(mediaSection); + var kind = SDPUtils.getKind(mediaSection); + // treat bundle-only as not-rejected. + var rejected = SDPUtils.isRejected(mediaSection) && + SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0; + var protocol = lines[0].substr(2).split(' ')[2]; + + var direction = SDPUtils.getDirection(mediaSection, sessionpart); + var remoteMsid = SDPUtils.parseMsid(mediaSection); + + var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier(); + + // Reject datachannels which are not implemented yet. + if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' || + protocol === 'UDP/DTLS/SCTP'))) { + // TODO: this is dangerous in the case where a non-rejected m-line + // becomes rejected. + pc.transceivers[sdpMLineIndex] = { + mid: mid, + kind: kind, + protocol: protocol, + rejected: true + }; + return; + } + + if (!rejected && pc.transceivers[sdpMLineIndex] && + pc.transceivers[sdpMLineIndex].rejected) { + // recycle a rejected transceiver. + pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true); + } + + var transceiver; + var iceGatherer; + var iceTransport; + var dtlsTransport; + var rtpReceiver; + var sendEncodingParameters; + var recvEncodingParameters; + var localCapabilities; + + var track; + // FIXME: ensure the mediaSection has rtcp-mux set. + var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection); + var remoteIceParameters; + var remoteDtlsParameters; + if (!rejected) { + remoteIceParameters = SDPUtils.getIceParameters(mediaSection, + sessionpart); + remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, + sessionpart); + remoteDtlsParameters.role = 'client'; + } + recvEncodingParameters = + SDPUtils.parseRtpEncodingParameters(mediaSection); + + var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection); + + var isComplete = SDPUtils.matchPrefix(mediaSection, + 'a=end-of-candidates', sessionpart).length > 0; + var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:') + .map(function(cand) { + return SDPUtils.parseCandidate(cand); + }) + .filter(function(cand) { + return cand.component === 1; + }); + + // Check if we can use BUNDLE and dispose transports. + if ((description.type === 'offer' || description.type === 'answer') && + !rejected && usingBundle && sdpMLineIndex > 0 && + pc.transceivers[sdpMLineIndex]) { + pc._disposeIceAndDtlsTransports(sdpMLineIndex); + pc.transceivers[sdpMLineIndex].iceGatherer = + pc.transceivers[0].iceGatherer; + pc.transceivers[sdpMLineIndex].iceTransport = + pc.transceivers[0].iceTransport; + pc.transceivers[sdpMLineIndex].dtlsTransport = + pc.transceivers[0].dtlsTransport; + if (pc.transceivers[sdpMLineIndex].rtpSender) { + pc.transceivers[sdpMLineIndex].rtpSender.setTransport( + pc.transceivers[0].dtlsTransport); + } + if (pc.transceivers[sdpMLineIndex].rtpReceiver) { + pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport( + pc.transceivers[0].dtlsTransport); + } + } + if (description.type === 'offer' && !rejected) { + transceiver = pc.transceivers[sdpMLineIndex] || + pc._createTransceiver(kind); + transceiver.mid = mid; + + if (!transceiver.iceGatherer) { + transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, + usingBundle); + } + + if (cands.length && transceiver.iceTransport.state === 'new') { + if (isComplete && (!usingBundle || sdpMLineIndex === 0)) { + transceiver.iceTransport.setRemoteCandidates(cands); + } else { + cands.forEach(function(candidate) { + maybeAddCandidate(transceiver.iceTransport, candidate); + }); + } + } + + localCapabilities = window.RTCRtpReceiver.getCapabilities(kind); + + // filter RTX until additional stuff needed for RTX is implemented + // in adapter.js + if (edgeVersion < 15019) { + localCapabilities.codecs = localCapabilities.codecs.filter( + function(codec) { + return codec.name !== 'rtx'; + }); + } + + sendEncodingParameters = transceiver.sendEncodingParameters || [{ + ssrc: (2 * sdpMLineIndex + 2) * 1001 + }]; + + // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams + var isNewTrack = false; + if (direction === 'sendrecv' || direction === 'sendonly') { + isNewTrack = !transceiver.rtpReceiver; + rtpReceiver = transceiver.rtpReceiver || + new window.RTCRtpReceiver(transceiver.dtlsTransport, kind); + + if (isNewTrack) { + var stream; + track = rtpReceiver.track; + // FIXME: does not work with Plan B. + if (remoteMsid && remoteMsid.stream === '-') { + // no-op. a stream id of '-' means: no associated stream. + } else if (remoteMsid) { + if (!streams[remoteMsid.stream]) { + streams[remoteMsid.stream] = new window.MediaStream(); + Object.defineProperty(streams[remoteMsid.stream], 'id', { + get: function() { + return remoteMsid.stream; + } + }); + } + Object.defineProperty(track, 'id', { + get: function() { + return remoteMsid.track; + } + }); + stream = streams[remoteMsid.stream]; + } else { + if (!streams.default) { + streams.default = new window.MediaStream(); + } + stream = streams.default; + } + if (stream) { + addTrackToStreamAndFireEvent(track, stream); + transceiver.associatedRemoteMediaStreams.push(stream); + } + receiverList.push([track, rtpReceiver, stream]); + } + } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) { + transceiver.associatedRemoteMediaStreams.forEach(function(s) { + var nativeTrack = s.getTracks().find(function(t) { + return t.id === transceiver.rtpReceiver.track.id; + }); + if (nativeTrack) { + removeTrackFromStreamAndFireEvent(nativeTrack, s); + } + }); + transceiver.associatedRemoteMediaStreams = []; + } + + transceiver.localCapabilities = localCapabilities; + transceiver.remoteCapabilities = remoteCapabilities; + transceiver.rtpReceiver = rtpReceiver; + transceiver.rtcpParameters = rtcpParameters; + transceiver.sendEncodingParameters = sendEncodingParameters; + transceiver.recvEncodingParameters = recvEncodingParameters; + + // Start the RTCRtpReceiver now. The RTPSender is started in + // setLocalDescription. + pc._transceive(pc.transceivers[sdpMLineIndex], + false, + isNewTrack); + } else if (description.type === 'answer' && !rejected) { + transceiver = pc.transceivers[sdpMLineIndex]; + iceGatherer = transceiver.iceGatherer; + iceTransport = transceiver.iceTransport; + dtlsTransport = transceiver.dtlsTransport; + rtpReceiver = transceiver.rtpReceiver; + sendEncodingParameters = transceiver.sendEncodingParameters; + localCapabilities = transceiver.localCapabilities; + + pc.transceivers[sdpMLineIndex].recvEncodingParameters = + recvEncodingParameters; + pc.transceivers[sdpMLineIndex].remoteCapabilities = + remoteCapabilities; + pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters; + + if (cands.length && iceTransport.state === 'new') { + if ((isIceLite || isComplete) && + (!usingBundle || sdpMLineIndex === 0)) { + iceTransport.setRemoteCandidates(cands); + } else { + cands.forEach(function(candidate) { + maybeAddCandidate(transceiver.iceTransport, candidate); + }); + } + } + + if (!usingBundle || sdpMLineIndex === 0) { + if (iceTransport.state === 'new') { + iceTransport.start(iceGatherer, remoteIceParameters, + 'controlling'); + } + if (dtlsTransport.state === 'new') { + dtlsTransport.start(remoteDtlsParameters); + } + } + + // If the offer contained RTX but the answer did not, + // remove RTX from sendEncodingParameters. + var commonCapabilities = getCommonCapabilities( + transceiver.localCapabilities, + transceiver.remoteCapabilities); + + var hasRtx = commonCapabilities.codecs.filter(function(c) { + return c.name.toLowerCase() === 'rtx'; + }).length; + if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) { + delete transceiver.sendEncodingParameters[0].rtx; + } + + pc._transceive(transceiver, + direction === 'sendrecv' || direction === 'recvonly', + direction === 'sendrecv' || direction === 'sendonly'); + + // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams + if (rtpReceiver && + (direction === 'sendrecv' || direction === 'sendonly')) { + track = rtpReceiver.track; + if (remoteMsid) { + if (!streams[remoteMsid.stream]) { + streams[remoteMsid.stream] = new window.MediaStream(); + } + addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]); + receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]); + } else { + if (!streams.default) { + streams.default = new window.MediaStream(); + } + addTrackToStreamAndFireEvent(track, streams.default); + receiverList.push([track, rtpReceiver, streams.default]); + } + } else { + // FIXME: actually the receiver should be created later. + delete transceiver.rtpReceiver; + } + } + }); + + if (pc._dtlsRole === undefined) { + pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive'; + } + + pc._remoteDescription = { + type: description.type, + sdp: description.sdp + }; + if (description.type === 'offer') { + pc._updateSignalingState('have-remote-offer'); + } else { + pc._updateSignalingState('stable'); + } + Object.keys(streams).forEach(function(sid) { + var stream = streams[sid]; + if (stream.getTracks().length) { + if (pc.remoteStreams.indexOf(stream) === -1) { + pc.remoteStreams.push(stream); + var event = new Event('addstream'); + event.stream = stream; + window.setTimeout(function() { + pc._dispatchEvent('addstream', event); + }); + } + + receiverList.forEach(function(item) { + var track = item[0]; + var receiver = item[1]; + if (stream.id !== item[2].id) { + return; + } + fireAddTrack(pc, track, receiver, [stream]); + }); + } + }); + receiverList.forEach(function(item) { + if (item[2]) { + return; + } + fireAddTrack(pc, item[0], item[1], []); + }); + + // check whether addIceCandidate({}) was called within four seconds after + // setRemoteDescription. + window.setTimeout(function() { + if (!(pc && pc.transceivers)) { + return; + } + pc.transceivers.forEach(function(transceiver) { + if (transceiver.iceTransport && + transceiver.iceTransport.state === 'new' && + transceiver.iceTransport.getRemoteCandidates().length > 0) { + console.warn('Timeout for addRemoteCandidate. Consider sending ' + + 'an end-of-candidates notification'); + transceiver.iceTransport.addRemoteCandidate({}); + } + }); + }, 4000); + + return Promise.resolve(); + }; + + RTCPeerConnection.prototype.close = function() { + this.transceivers.forEach(function(transceiver) { + /* not yet + if (transceiver.iceGatherer) { + transceiver.iceGatherer.close(); + } + */ + if (transceiver.iceTransport) { + transceiver.iceTransport.stop(); + } + if (transceiver.dtlsTransport) { + transceiver.dtlsTransport.stop(); + } + if (transceiver.rtpSender) { + transceiver.rtpSender.stop(); + } + if (transceiver.rtpReceiver) { + transceiver.rtpReceiver.stop(); + } + }); + // FIXME: clean up tracks, local streams, remote streams, etc + this._isClosed = true; + this._updateSignalingState('closed'); + }; + + // Update the signaling state. + RTCPeerConnection.prototype._updateSignalingState = function(newState) { + this.signalingState = newState; + var event = new Event('signalingstatechange'); + this._dispatchEvent('signalingstatechange', event); + }; + + // Determine whether to fire the negotiationneeded event. + RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() { + var pc = this; + if (this.signalingState !== 'stable' || this.needNegotiation === true) { + return; + } + this.needNegotiation = true; + window.setTimeout(function() { + if (pc.needNegotiation) { + pc.needNegotiation = false; + var event = new Event('negotiationneeded'); + pc._dispatchEvent('negotiationneeded', event); + } + }, 0); + }; + + // Update the ice connection state. + RTCPeerConnection.prototype._updateIceConnectionState = function() { + var newState; + var states = { + 'new': 0, + closed: 0, + checking: 0, + connected: 0, + completed: 0, + disconnected: 0, + failed: 0 + }; + this.transceivers.forEach(function(transceiver) { + if (transceiver.iceTransport && !transceiver.rejected) { + states[transceiver.iceTransport.state]++; + } + }); + + newState = 'new'; + if (states.failed > 0) { + newState = 'failed'; + } else if (states.checking > 0) { + newState = 'checking'; + } else if (states.disconnected > 0) { + newState = 'disconnected'; + } else if (states.new > 0) { + newState = 'new'; + } else if (states.connected > 0) { + newState = 'connected'; + } else if (states.completed > 0) { + newState = 'completed'; + } + + if (newState !== this.iceConnectionState) { + this.iceConnectionState = newState; + var event = new Event('iceconnectionstatechange'); + this._dispatchEvent('iceconnectionstatechange', event); + } + }; + + // Update the connection state. + RTCPeerConnection.prototype._updateConnectionState = function() { + var newState; + var states = { + 'new': 0, + closed: 0, + connecting: 0, + connected: 0, + completed: 0, + disconnected: 0, + failed: 0 + }; + this.transceivers.forEach(function(transceiver) { + if (transceiver.iceTransport && transceiver.dtlsTransport && + !transceiver.rejected) { + states[transceiver.iceTransport.state]++; + states[transceiver.dtlsTransport.state]++; + } + }); + // ICETransport.completed and connected are the same for this purpose. + states.connected += states.completed; + + newState = 'new'; + if (states.failed > 0) { + newState = 'failed'; + } else if (states.connecting > 0) { + newState = 'connecting'; + } else if (states.disconnected > 0) { + newState = 'disconnected'; + } else if (states.new > 0) { + newState = 'new'; + } else if (states.connected > 0) { + newState = 'connected'; + } + + if (newState !== this.connectionState) { + this.connectionState = newState; + var event = new Event('connectionstatechange'); + this._dispatchEvent('connectionstatechange', event); + } + }; + + RTCPeerConnection.prototype.createOffer = function() { + var pc = this; + + if (pc._isClosed) { + return Promise.reject(makeError('InvalidStateError', + 'Can not call createOffer after close')); + } + + var numAudioTracks = pc.transceivers.filter(function(t) { + return t.kind === 'audio'; + }).length; + var numVideoTracks = pc.transceivers.filter(function(t) { + return t.kind === 'video'; + }).length; + + // Determine number of audio and video tracks we need to send/recv. + var offerOptions = arguments[0]; + if (offerOptions) { + // Reject Chrome legacy constraints. + if (offerOptions.mandatory || offerOptions.optional) { + throw new TypeError( + 'Legacy mandatory/optional constraints not supported.'); + } + if (offerOptions.offerToReceiveAudio !== undefined) { + if (offerOptions.offerToReceiveAudio === true) { + numAudioTracks = 1; + } else if (offerOptions.offerToReceiveAudio === false) { + numAudioTracks = 0; + } else { + numAudioTracks = offerOptions.offerToReceiveAudio; + } + } + if (offerOptions.offerToReceiveVideo !== undefined) { + if (offerOptions.offerToReceiveVideo === true) { + numVideoTracks = 1; + } else if (offerOptions.offerToReceiveVideo === false) { + numVideoTracks = 0; + } else { + numVideoTracks = offerOptions.offerToReceiveVideo; + } + } + } + + pc.transceivers.forEach(function(transceiver) { + if (transceiver.kind === 'audio') { + numAudioTracks--; + if (numAudioTracks < 0) { + transceiver.wantReceive = false; + } + } else if (transceiver.kind === 'video') { + numVideoTracks--; + if (numVideoTracks < 0) { + transceiver.wantReceive = false; + } + } + }); + + // Create M-lines for recvonly streams. + while (numAudioTracks > 0 || numVideoTracks > 0) { + if (numAudioTracks > 0) { + pc._createTransceiver('audio'); + numAudioTracks--; + } + if (numVideoTracks > 0) { + pc._createTransceiver('video'); + numVideoTracks--; + } + } + + var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, + pc._sdpSessionVersion++); + pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { + // For each track, create an ice gatherer, ice transport, + // dtls transport, potentially rtpsender and rtpreceiver. + var track = transceiver.track; + var kind = transceiver.kind; + var mid = transceiver.mid || SDPUtils.generateIdentifier(); + transceiver.mid = mid; + + if (!transceiver.iceGatherer) { + transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, + pc.usingBundle); + } + + var localCapabilities = window.RTCRtpSender.getCapabilities(kind); + // filter RTX until additional stuff needed for RTX is implemented + // in adapter.js + if (edgeVersion < 15019) { + localCapabilities.codecs = localCapabilities.codecs.filter( + function(codec) { + return codec.name !== 'rtx'; + }); + } + localCapabilities.codecs.forEach(function(codec) { + // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552 + // by adding level-asymmetry-allowed=1 + if (codec.name === 'H264' && + codec.parameters['level-asymmetry-allowed'] === undefined) { + codec.parameters['level-asymmetry-allowed'] = '1'; + } + + // for subsequent offers, we might have to re-use the payload + // type of the last offer. + if (transceiver.remoteCapabilities && + transceiver.remoteCapabilities.codecs) { + transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) { + if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() && + codec.clockRate === remoteCodec.clockRate) { + codec.preferredPayloadType = remoteCodec.payloadType; + } + }); + } + }); + localCapabilities.headerExtensions.forEach(function(hdrExt) { + var remoteExtensions = transceiver.remoteCapabilities && + transceiver.remoteCapabilities.headerExtensions || []; + remoteExtensions.forEach(function(rHdrExt) { + if (hdrExt.uri === rHdrExt.uri) { + hdrExt.id = rHdrExt.id; + } + }); + }); + + // generate an ssrc now, to be used later in rtpSender.send + var sendEncodingParameters = transceiver.sendEncodingParameters || [{ + ssrc: (2 * sdpMLineIndex + 1) * 1001 + }]; + if (track) { + // add RTX + if (edgeVersion >= 15019 && kind === 'video' && + !sendEncodingParameters[0].rtx) { + sendEncodingParameters[0].rtx = { + ssrc: sendEncodingParameters[0].ssrc + 1 + }; + } + } + + if (transceiver.wantReceive) { + transceiver.rtpReceiver = new window.RTCRtpReceiver( + transceiver.dtlsTransport, kind); + } + + transceiver.localCapabilities = localCapabilities; + transceiver.sendEncodingParameters = sendEncodingParameters; + }); + + // always offer BUNDLE and dispose on return if not supported. + if (pc._config.bundlePolicy !== 'max-compat') { + sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) { + return t.mid; + }).join(' ') + '\r\n'; + } + sdp += 'a=ice-options:trickle\r\n'; + + pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { + sdp += writeMediaSection(transceiver, transceiver.localCapabilities, + 'offer', transceiver.stream, pc._dtlsRole); + sdp += 'a=rtcp-rsize\r\n'; + + if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' && + (sdpMLineIndex === 0 || !pc.usingBundle)) { + transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) { + cand.component = 1; + sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n'; + }); + + if (transceiver.iceGatherer.state === 'completed') { + sdp += 'a=end-of-candidates\r\n'; + } + } + }); + + var desc = new window.RTCSessionDescription({ + type: 'offer', + sdp: sdp + }); + return Promise.resolve(desc); + }; + + RTCPeerConnection.prototype.createAnswer = function() { + var pc = this; + + if (pc._isClosed) { + return Promise.reject(makeError('InvalidStateError', + 'Can not call createAnswer after close')); + } + + if (!(pc.signalingState === 'have-remote-offer' || + pc.signalingState === 'have-local-pranswer')) { + return Promise.reject(makeError('InvalidStateError', + 'Can not call createAnswer in signalingState ' + pc.signalingState)); + } + + var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, + pc._sdpSessionVersion++); + if (pc.usingBundle) { + sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) { + return t.mid; + }).join(' ') + '\r\n'; + } + sdp += 'a=ice-options:trickle\r\n'; + + var mediaSectionsInOffer = SDPUtils.getMediaSections( + pc._remoteDescription.sdp).length; + pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { + if (sdpMLineIndex + 1 > mediaSectionsInOffer) { + return; + } + if (transceiver.rejected) { + if (transceiver.kind === 'application') { + if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt + sdp += 'm=application 0 DTLS/SCTP 5000\r\n'; + } else { + sdp += 'm=application 0 ' + transceiver.protocol + + ' webrtc-datachannel\r\n'; + } + } else if (transceiver.kind === 'audio') { + sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' + + 'a=rtpmap:0 PCMU/8000\r\n'; + } else if (transceiver.kind === 'video') { + sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' + + 'a=rtpmap:120 VP8/90000\r\n'; + } + sdp += 'c=IN IP4 0.0.0.0\r\n' + + 'a=inactive\r\n' + + 'a=mid:' + transceiver.mid + '\r\n'; + return; + } + + // FIXME: look at direction. + if (transceiver.stream) { + var localTrack; + if (transceiver.kind === 'audio') { + localTrack = transceiver.stream.getAudioTracks()[0]; + } else if (transceiver.kind === 'video') { + localTrack = transceiver.stream.getVideoTracks()[0]; + } + if (localTrack) { + // add RTX + if (edgeVersion >= 15019 && transceiver.kind === 'video' && + !transceiver.sendEncodingParameters[0].rtx) { + transceiver.sendEncodingParameters[0].rtx = { + ssrc: transceiver.sendEncodingParameters[0].ssrc + 1 + }; + } + } + } + + // Calculate intersection of capabilities. + var commonCapabilities = getCommonCapabilities( + transceiver.localCapabilities, + transceiver.remoteCapabilities); + + var hasRtx = commonCapabilities.codecs.filter(function(c) { + return c.name.toLowerCase() === 'rtx'; + }).length; + if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) { + delete transceiver.sendEncodingParameters[0].rtx; + } + + sdp += writeMediaSection(transceiver, commonCapabilities, + 'answer', transceiver.stream, pc._dtlsRole); + if (transceiver.rtcpParameters && + transceiver.rtcpParameters.reducedSize) { + sdp += 'a=rtcp-rsize\r\n'; + } + }); + + var desc = new window.RTCSessionDescription({ + type: 'answer', + sdp: sdp + }); + return Promise.resolve(desc); + }; + + RTCPeerConnection.prototype.addIceCandidate = function(candidate) { + var pc = this; + var sections; + if (candidate && !(candidate.sdpMLineIndex !== undefined || + candidate.sdpMid)) { + return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required')); + } + + // TODO: needs to go into ops queue. + return new Promise(function(resolve, reject) { + if (!pc._remoteDescription) { + return reject(makeError('InvalidStateError', + 'Can not add ICE candidate without a remote description')); + } else if (!candidate || candidate.candidate === '') { + for (var j = 0; j < pc.transceivers.length; j++) { + if (pc.transceivers[j].rejected) { + continue; + } + pc.transceivers[j].iceTransport.addRemoteCandidate({}); + sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp); + sections[j] += 'a=end-of-candidates\r\n'; + pc._remoteDescription.sdp = + SDPUtils.getDescription(pc._remoteDescription.sdp) + + sections.join(''); + if (pc.usingBundle) { + break; + } + } + } else { + var sdpMLineIndex = candidate.sdpMLineIndex; + if (candidate.sdpMid) { + for (var i = 0; i < pc.transceivers.length; i++) { + if (pc.transceivers[i].mid === candidate.sdpMid) { + sdpMLineIndex = i; + break; + } + } + } + var transceiver = pc.transceivers[sdpMLineIndex]; + if (transceiver) { + if (transceiver.rejected) { + return resolve(); + } + var cand = Object.keys(candidate.candidate).length > 0 ? + SDPUtils.parseCandidate(candidate.candidate) : {}; + // Ignore Chrome's invalid candidates since Edge does not like them. + if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) { + return resolve(); + } + // Ignore RTCP candidates, we assume RTCP-MUX. + if (cand.component && cand.component !== 1) { + return resolve(); + } + // when using bundle, avoid adding candidates to the wrong + // ice transport. And avoid adding candidates added in the SDP. + if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 && + transceiver.iceTransport !== pc.transceivers[0].iceTransport)) { + if (!maybeAddCandidate(transceiver.iceTransport, cand)) { + return reject(makeError('OperationError', + 'Can not add ICE candidate')); + } + } + + // update the remoteDescription. + var candidateString = candidate.candidate.trim(); + if (candidateString.indexOf('a=') === 0) { + candidateString = candidateString.substr(2); + } + sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp); + sections[sdpMLineIndex] += 'a=' + + (cand.type ? candidateString : 'end-of-candidates') + + '\r\n'; + pc._remoteDescription.sdp = + SDPUtils.getDescription(pc._remoteDescription.sdp) + + sections.join(''); + } else { + return reject(makeError('OperationError', + 'Can not add ICE candidate')); + } + } + resolve(); + }); + }; + + RTCPeerConnection.prototype.getStats = function(selector) { + if (selector && selector instanceof window.MediaStreamTrack) { + var senderOrReceiver = null; + this.transceivers.forEach(function(transceiver) { + if (transceiver.rtpSender && + transceiver.rtpSender.track === selector) { + senderOrReceiver = transceiver.rtpSender; + } else if (transceiver.rtpReceiver && + transceiver.rtpReceiver.track === selector) { + senderOrReceiver = transceiver.rtpReceiver; + } + }); + if (!senderOrReceiver) { + throw makeError('InvalidAccessError', 'Invalid selector.'); + } + return senderOrReceiver.getStats(); + } + + var promises = []; + this.transceivers.forEach(function(transceiver) { + ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', + 'dtlsTransport'].forEach(function(method) { + if (transceiver[method]) { + promises.push(transceiver[method].getStats()); + } + }); + }); + return Promise.all(promises).then(function(allStats) { + var results = new Map(); + allStats.forEach(function(stats) { + stats.forEach(function(stat) { + results.set(stat.id, stat); + }); + }); + return results; + }); + }; + + // fix low-level stat names and return Map instead of object. + var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer', + 'RTCIceTransport', 'RTCDtlsTransport']; + ortcObjects.forEach(function(ortcObjectName) { + var obj = window[ortcObjectName]; + if (obj && obj.prototype && obj.prototype.getStats) { + var nativeGetstats = obj.prototype.getStats; + obj.prototype.getStats = function() { + return nativeGetstats.apply(this) + .then(function(nativeStats) { + var mapStats = new Map(); + Object.keys(nativeStats).forEach(function(id) { + nativeStats[id].type = fixStatsType(nativeStats[id]); + mapStats.set(id, nativeStats[id]); + }); + return mapStats; + }); + }; + } + }); + + // legacy callback shims. Should be moved to adapter.js some days. + var methods = ['createOffer', 'createAnswer']; + methods.forEach(function(method) { + var nativeMethod = RTCPeerConnection.prototype[method]; + RTCPeerConnection.prototype[method] = function() { + var args = arguments; + if (typeof args[0] === 'function' || + typeof args[1] === 'function') { // legacy + return nativeMethod.apply(this, [arguments[2]]) + .then(function(description) { + if (typeof args[0] === 'function') { + args[0].apply(null, [description]); + } + }, function(error) { + if (typeof args[1] === 'function') { + args[1].apply(null, [error]); + } + }); + } + return nativeMethod.apply(this, arguments); + }; + }); + + methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']; + methods.forEach(function(method) { + var nativeMethod = RTCPeerConnection.prototype[method]; + RTCPeerConnection.prototype[method] = function() { + var args = arguments; + if (typeof args[1] === 'function' || + typeof args[2] === 'function') { // legacy + return nativeMethod.apply(this, arguments) + .then(function() { + if (typeof args[1] === 'function') { + args[1].apply(null); + } + }, function(error) { + if (typeof args[2] === 'function') { + args[2].apply(null, [error]); + } + }); + } + return nativeMethod.apply(this, arguments); + }; + }); + + // getStats is special. It doesn't have a spec legacy method yet we support + // getStats(something, cb) without error callbacks. + ['getStats'].forEach(function(method) { + var nativeMethod = RTCPeerConnection.prototype[method]; + RTCPeerConnection.prototype[method] = function() { + var args = arguments; + if (typeof args[1] === 'function') { + return nativeMethod.apply(this, arguments) + .then(function() { + if (typeof args[1] === 'function') { + args[1].apply(null); + } + }); + } + return nativeMethod.apply(this, arguments); + }; + }); + + return RTCPeerConnection; +}; + +},{"sdp":17}],17:[function(require,module,exports){ + /* eslint-env node */ +'use strict'; + +// SDP helpers. +var SDPUtils = {}; + +// Generate an alphanumeric identifier for cname or mids. +// TODO: use UUIDs instead? https://gist.github.com/jed/982883 +SDPUtils.generateIdentifier = function() { + return Math.random().toString(36).substr(2, 10); +}; + +// The RTCP CNAME used by all peerconnections from the same JS. +SDPUtils.localCName = SDPUtils.generateIdentifier(); + +// Splits SDP into lines, dealing with both CRLF and LF. +SDPUtils.splitLines = function(blob) { + return blob.trim().split('\n').map(function(line) { + return line.trim(); + }); +}; +// Splits SDP into sessionpart and mediasections. Ensures CRLF. +SDPUtils.splitSections = function(blob) { + var parts = blob.split('\nm='); + return parts.map(function(part, index) { + return (index > 0 ? 'm=' + part : part).trim() + '\r\n'; + }); +}; + +// returns the session description. +SDPUtils.getDescription = function(blob) { + var sections = SDPUtils.splitSections(blob); + return sections && sections[0]; +}; + +// returns the individual media sections. +SDPUtils.getMediaSections = function(blob) { + var sections = SDPUtils.splitSections(blob); + sections.shift(); + return sections; +}; + +// Returns lines that start with a certain prefix. +SDPUtils.matchPrefix = function(blob, prefix) { + return SDPUtils.splitLines(blob).filter(function(line) { + return line.indexOf(prefix) === 0; + }); +}; + +// Parses an ICE candidate line. Sample input: +// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8 +// rport 55996" +SDPUtils.parseCandidate = function(line) { + var parts; + // Parse both variants. + if (line.indexOf('a=candidate:') === 0) { + parts = line.substring(12).split(' '); + } else { + parts = line.substring(10).split(' '); + } + + var candidate = { + foundation: parts[0], + component: parseInt(parts[1], 10), + protocol: parts[2].toLowerCase(), + priority: parseInt(parts[3], 10), + ip: parts[4], + address: parts[4], // address is an alias for ip. + port: parseInt(parts[5], 10), + // skip parts[6] == 'typ' + type: parts[7] + }; + + for (var i = 8; i < parts.length; i += 2) { + switch (parts[i]) { + case 'raddr': + candidate.relatedAddress = parts[i + 1]; + break; + case 'rport': + candidate.relatedPort = parseInt(parts[i + 1], 10); + break; + case 'tcptype': + candidate.tcpType = parts[i + 1]; + break; + case 'ufrag': + candidate.ufrag = parts[i + 1]; // for backward compability. + candidate.usernameFragment = parts[i + 1]; + break; + default: // extension handling, in particular ufrag + candidate[parts[i]] = parts[i + 1]; + break; + } + } + return candidate; +}; + +// Translates a candidate object into SDP candidate attribute. +SDPUtils.writeCandidate = function(candidate) { + var sdp = []; + sdp.push(candidate.foundation); + sdp.push(candidate.component); + sdp.push(candidate.protocol.toUpperCase()); + sdp.push(candidate.priority); + sdp.push(candidate.address || candidate.ip); + sdp.push(candidate.port); + + var type = candidate.type; + sdp.push('typ'); + sdp.push(type); + if (type !== 'host' && candidate.relatedAddress && + candidate.relatedPort) { + sdp.push('raddr'); + sdp.push(candidate.relatedAddress); + sdp.push('rport'); + sdp.push(candidate.relatedPort); + } + if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') { + sdp.push('tcptype'); + sdp.push(candidate.tcpType); + } + if (candidate.usernameFragment || candidate.ufrag) { + sdp.push('ufrag'); + sdp.push(candidate.usernameFragment || candidate.ufrag); + } + return 'candidate:' + sdp.join(' '); +}; + +// Parses an ice-options line, returns an array of option tags. +// a=ice-options:foo bar +SDPUtils.parseIceOptions = function(line) { + return line.substr(14).split(' '); +}; + +// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input: +// a=rtpmap:111 opus/48000/2 +SDPUtils.parseRtpMap = function(line) { + var parts = line.substr(9).split(' '); + var parsed = { + payloadType: parseInt(parts.shift(), 10) // was: id + }; + + parts = parts[0].split('/'); + + parsed.name = parts[0]; + parsed.clockRate = parseInt(parts[1], 10); // was: clockrate + parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1; + // legacy alias, got renamed back to channels in ORTC. + parsed.numChannels = parsed.channels; + return parsed; +}; + +// Generate an a=rtpmap line from RTCRtpCodecCapability or +// RTCRtpCodecParameters. +SDPUtils.writeRtpMap = function(codec) { + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + var channels = codec.channels || codec.numChannels || 1; + return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + + (channels !== 1 ? '/' + channels : '') + '\r\n'; +}; + +// Parses an a=extmap line (headerextension from RFC 5285). Sample input: +// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset +// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset +SDPUtils.parseExtmap = function(line) { + var parts = line.substr(9).split(' '); + return { + id: parseInt(parts[0], 10), + direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv', + uri: parts[1] + }; +}; + +// Generates a=extmap line from RTCRtpHeaderExtensionParameters or +// RTCRtpHeaderExtension. +SDPUtils.writeExtmap = function(headerExtension) { + return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + + (headerExtension.direction && headerExtension.direction !== 'sendrecv' + ? '/' + headerExtension.direction + : '') + + ' ' + headerExtension.uri + '\r\n'; +}; + +// Parses an ftmp line, returns dictionary. Sample input: +// a=fmtp:96 vbr=on;cng=on +// Also deals with vbr=on; cng=on +SDPUtils.parseFmtp = function(line) { + var parsed = {}; + var kv; + var parts = line.substr(line.indexOf(' ') + 1).split(';'); + for (var j = 0; j < parts.length; j++) { + kv = parts[j].trim().split('='); + parsed[kv[0].trim()] = kv[1]; + } + return parsed; +}; + +// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters. +SDPUtils.writeFmtp = function(codec) { + var line = ''; + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + if (codec.parameters && Object.keys(codec.parameters).length) { + var params = []; + Object.keys(codec.parameters).forEach(function(param) { + if (codec.parameters[param]) { + params.push(param + '=' + codec.parameters[param]); + } else { + params.push(param); + } + }); + line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n'; + } + return line; +}; + +// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input: +// a=rtcp-fb:98 nack rpsi +SDPUtils.parseRtcpFb = function(line) { + var parts = line.substr(line.indexOf(' ') + 1).split(' '); + return { + type: parts.shift(), + parameter: parts.join(' ') + }; +}; +// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters. +SDPUtils.writeRtcpFb = function(codec) { + var lines = ''; + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + if (codec.rtcpFeedback && codec.rtcpFeedback.length) { + // FIXME: special handling for trr-int? + codec.rtcpFeedback.forEach(function(fb) { + lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + + (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + + '\r\n'; + }); + } + return lines; +}; + +// Parses an RFC 5576 ssrc media attribute. Sample input: +// a=ssrc:3735928559 cname:something +SDPUtils.parseSsrcMedia = function(line) { + var sp = line.indexOf(' '); + var parts = { + ssrc: parseInt(line.substr(7, sp - 7), 10) + }; + var colon = line.indexOf(':', sp); + if (colon > -1) { + parts.attribute = line.substr(sp + 1, colon - sp - 1); + parts.value = line.substr(colon + 1); + } else { + parts.attribute = line.substr(sp + 1); + } + return parts; +}; + +SDPUtils.parseSsrcGroup = function(line) { + var parts = line.substr(13).split(' '); + return { + semantics: parts.shift(), + ssrcs: parts.map(function(ssrc) { + return parseInt(ssrc, 10); + }) + }; +}; + +// Extracts the MID (RFC 5888) from a media section. +// returns the MID or undefined if no mid line was found. +SDPUtils.getMid = function(mediaSection) { + var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0]; + if (mid) { + return mid.substr(6); + } +}; + +SDPUtils.parseFingerprint = function(line) { + var parts = line.substr(14).split(' '); + return { + algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge. + value: parts[1] + }; +}; + +// Extracts DTLS parameters from SDP media section or sessionpart. +// FIXME: for consistency with other functions this should only +// get the fingerprint line as input. See also getIceParameters. +SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) { + var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, + 'a=fingerprint:'); + // Note: a=setup line is ignored since we use the 'auto' role. + // Note2: 'algorithm' is not case sensitive except in Edge. + return { + role: 'auto', + fingerprints: lines.map(SDPUtils.parseFingerprint) + }; +}; + +// Serializes DTLS parameters to SDP. +SDPUtils.writeDtlsParameters = function(params, setupType) { + var sdp = 'a=setup:' + setupType + '\r\n'; + params.fingerprints.forEach(function(fp) { + sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n'; + }); + return sdp; +}; +// Parses ICE information from SDP media section or sessionpart. +// FIXME: for consistency with other functions this should only +// get the ice-ufrag and ice-pwd lines as input. +SDPUtils.getIceParameters = function(mediaSection, sessionpart) { + var lines = SDPUtils.splitLines(mediaSection); + // Search in session part, too. + lines = lines.concat(SDPUtils.splitLines(sessionpart)); + var iceParameters = { + usernameFragment: lines.filter(function(line) { + return line.indexOf('a=ice-ufrag:') === 0; + })[0].substr(12), + password: lines.filter(function(line) { + return line.indexOf('a=ice-pwd:') === 0; + })[0].substr(10) + }; + return iceParameters; }; -// Expose public methods. -module.exports = { - shimOnTrack: firefoxShim.shimOnTrack, - shimSourceObject: firefoxShim.shimSourceObject, - shimPeerConnection: firefoxShim.shimPeerConnection, - shimGetUserMedia: require('./getusermedia') +// Serializes ICE parameters to SDP. +SDPUtils.writeIceParameters = function(params) { + return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + + 'a=ice-pwd:' + params.password + '\r\n'; }; -},{"../utils":13,"./getusermedia":11}],11:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ - /* eslint-env node */ -'use strict'; - -var utils = require('../utils'); -var logging = utils.log; - -// Expose public methods. -module.exports = function(window) { - var browserDetails = utils.detectBrowser(window); - var navigator = window && window.navigator; - var MediaStreamTrack = window && window.MediaStreamTrack; - - var shimError_ = function(e) { - return { - name: { - InternalError: 'NotReadableError', - NotSupportedError: 'TypeError', - PermissionDeniedError: 'NotAllowedError', - SecurityError: 'NotAllowedError' - }[e.name] || e.name, - message: { - 'The operation is insecure.': 'The request is not allowed by the ' + - 'user agent or the platform in the current context.' - }[e.message] || e.message, - constraint: e.constraint, - toString: function() { - return this.name + (this.message && ': ') + this.message; - } - }; +// Parses the SDP media section and returns RTCRtpParameters. +SDPUtils.parseRtpParameters = function(mediaSection) { + var description = { + codecs: [], + headerExtensions: [], + fecMechanisms: [], + rtcp: [] }; - - // getUserMedia constraints shim. - var getUserMedia_ = function(constraints, onSuccess, onError) { - var constraintsToFF37_ = function(c) { - if (typeof c !== 'object' || c.require) { - return c; - } - var require = []; - Object.keys(c).forEach(function(key) { - if (key === 'require' || key === 'advanced' || key === 'mediaSource') { - return; - } - var r = c[key] = (typeof c[key] === 'object') ? - c[key] : {ideal: c[key]}; - if (r.min !== undefined || - r.max !== undefined || r.exact !== undefined) { - require.push(key); - } - if (r.exact !== undefined) { - if (typeof r.exact === 'number') { - r. min = r.max = r.exact; - } else { - c[key] = r.exact; - } - delete r.exact; - } - if (r.ideal !== undefined) { - c.advanced = c.advanced || []; - var oc = {}; - if (typeof r.ideal === 'number') { - oc[key] = {min: r.ideal, max: r.ideal}; - } else { - oc[key] = r.ideal; - } - c.advanced.push(oc); - delete r.ideal; - if (!Object.keys(r).length) { - delete c[key]; - } - } - }); - if (require.length) { - c.require = require; - } - return c; - }; - constraints = JSON.parse(JSON.stringify(constraints)); - if (browserDetails.version < 38) { - logging('spec: ' + JSON.stringify(constraints)); - if (constraints.audio) { - constraints.audio = constraintsToFF37_(constraints.audio); - } - if (constraints.video) { - constraints.video = constraintsToFF37_(constraints.video); + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].split(' '); + for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..] + var pt = mline[i]; + var rtpmapline = SDPUtils.matchPrefix( + mediaSection, 'a=rtpmap:' + pt + ' ')[0]; + if (rtpmapline) { + var codec = SDPUtils.parseRtpMap(rtpmapline); + var fmtps = SDPUtils.matchPrefix( + mediaSection, 'a=fmtp:' + pt + ' '); + // Only the first a=fmtp: is considered. + codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {}; + codec.rtcpFeedback = SDPUtils.matchPrefix( + mediaSection, 'a=rtcp-fb:' + pt + ' ') + .map(SDPUtils.parseRtcpFb); + description.codecs.push(codec); + // parse FEC mechanisms from rtpmap lines. + switch (codec.name.toUpperCase()) { + case 'RED': + case 'ULPFEC': + description.fecMechanisms.push(codec.name.toUpperCase()); + break; + default: // only RED and ULPFEC are recognized as FEC mechanisms. + break; } - logging('ff37: ' + JSON.stringify(constraints)); } - return navigator.mozGetUserMedia(constraints, onSuccess, function(e) { - onError(shimError_(e)); - }); - }; - - // Returns the result of getUserMedia as a Promise. - var getUserMediaPromise_ = function(constraints) { - return new Promise(function(resolve, reject) { - getUserMedia_(constraints, resolve, reject); - }); - }; - - // Shim for mediaDevices on older versions. - if (!navigator.mediaDevices) { - navigator.mediaDevices = {getUserMedia: getUserMediaPromise_, - addEventListener: function() { }, - removeEventListener: function() { } - }; - } - navigator.mediaDevices.enumerateDevices = - navigator.mediaDevices.enumerateDevices || function() { - return new Promise(function(resolve) { - var infos = [ - {kind: 'audioinput', deviceId: 'default', label: '', groupId: ''}, - {kind: 'videoinput', deviceId: 'default', label: '', groupId: ''} - ]; - resolve(infos); - }); - }; - - if (browserDetails.version < 41) { - // Work around http://bugzil.la/1169665 - var orgEnumerateDevices = - navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices); - navigator.mediaDevices.enumerateDevices = function() { - return orgEnumerateDevices().then(undefined, function(e) { - if (e.name === 'NotFoundError') { - return []; - } - throw e; - }); - }; - } - if (browserDetails.version < 49) { - var origGetUserMedia = navigator.mediaDevices.getUserMedia. - bind(navigator.mediaDevices); - navigator.mediaDevices.getUserMedia = function(c) { - return origGetUserMedia(c).then(function(stream) { - // Work around https://bugzil.la/802326 - if (c.audio && !stream.getAudioTracks().length || - c.video && !stream.getVideoTracks().length) { - stream.getTracks().forEach(function(track) { - track.stop(); - }); - throw new DOMException('The object can not be found here.', - 'NotFoundError'); - } - return stream; - }, function(e) { - return Promise.reject(shimError_(e)); - }); - }; } - if (!(browserDetails.version > 55 && - 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) { - var remap = function(obj, a, b) { - if (a in obj && !(b in obj)) { - obj[b] = obj[a]; - delete obj[a]; - } - }; + SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) { + description.headerExtensions.push(SDPUtils.parseExtmap(line)); + }); + // FIXME: parse rtcp. + return description; +}; - var nativeGetUserMedia = navigator.mediaDevices.getUserMedia. - bind(navigator.mediaDevices); - navigator.mediaDevices.getUserMedia = function(c) { - if (typeof c === 'object' && typeof c.audio === 'object') { - c = JSON.parse(JSON.stringify(c)); - remap(c.audio, 'autoGainControl', 'mozAutoGainControl'); - remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression'); - } - return nativeGetUserMedia(c); - }; +// Generates parts of the SDP media section describing the capabilities / +// parameters. +SDPUtils.writeRtpDescription = function(kind, caps) { + var sdp = ''; - if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) { - var nativeGetSettings = MediaStreamTrack.prototype.getSettings; - MediaStreamTrack.prototype.getSettings = function() { - var obj = nativeGetSettings.apply(this, arguments); - remap(obj, 'mozAutoGainControl', 'autoGainControl'); - remap(obj, 'mozNoiseSuppression', 'noiseSuppression'); - return obj; - }; + // Build the mline. + sdp += 'm=' + kind + ' '; + sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs. + sdp += ' UDP/TLS/RTP/SAVPF '; + sdp += caps.codecs.map(function(codec) { + if (codec.preferredPayloadType !== undefined) { + return codec.preferredPayloadType; } + return codec.payloadType; + }).join(' ') + '\r\n'; - if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) { - var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints; - MediaStreamTrack.prototype.applyConstraints = function(c) { - if (this.kind === 'audio' && typeof c === 'object') { - c = JSON.parse(JSON.stringify(c)); - remap(c, 'autoGainControl', 'mozAutoGainControl'); - remap(c, 'noiseSuppression', 'mozNoiseSuppression'); - } - return nativeApplyConstraints.apply(this, [c]); - }; + sdp += 'c=IN IP4 0.0.0.0\r\n'; + sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n'; + + // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb. + caps.codecs.forEach(function(codec) { + sdp += SDPUtils.writeRtpMap(codec); + sdp += SDPUtils.writeFmtp(codec); + sdp += SDPUtils.writeRtcpFb(codec); + }); + var maxptime = 0; + caps.codecs.forEach(function(codec) { + if (codec.maxptime > maxptime) { + maxptime = codec.maxptime; } + }); + if (maxptime > 0) { + sdp += 'a=maxptime:' + maxptime + '\r\n'; } - navigator.getUserMedia = function(constraints, onSuccess, onError) { - if (browserDetails.version < 44) { - return getUserMedia_(constraints, onSuccess, onError); - } - // Replace Firefox 44+'s deprecation warning with unprefixed version. - utils.deprecated('navigator.getUserMedia', - 'navigator.mediaDevices.getUserMedia'); - navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError); - }; -}; + sdp += 'a=rtcp-mux\r\n'; -},{"../utils":13}],12:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ -'use strict'; -var utils = require('../utils'); + if (caps.headerExtensions) { + caps.headerExtensions.forEach(function(extension) { + sdp += SDPUtils.writeExtmap(extension); + }); + } + // FIXME: write fecMechanisms. + return sdp; +}; -var safariShim = { - // TODO: DrAlex, should be here, double check against LayoutTests +// Parses the SDP media section and returns an array of +// RTCRtpEncodingParameters. +SDPUtils.parseRtpEncodingParameters = function(mediaSection) { + var encodingParameters = []; + var description = SDPUtils.parseRtpParameters(mediaSection); + var hasRed = description.fecMechanisms.indexOf('RED') !== -1; + var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1; - // TODO: once the back-end for the mac port is done, add. - // TODO: check for webkitGTK+ - // shimPeerConnection: function() { }, + // filter a=ssrc:... cname:, ignore PlanB-msid + var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(parts) { + return parts.attribute === 'cname'; + }); + var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc; + var secondarySsrc; - shimLocalStreamsAPI: function(window) { - if (typeof window !== 'object' || !window.RTCPeerConnection) { - return; - } - if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) { - window.RTCPeerConnection.prototype.getLocalStreams = function() { - if (!this._localStreams) { - this._localStreams = []; - } - return this._localStreams; - }; - } - if (!('getStreamById' in window.RTCPeerConnection.prototype)) { - window.RTCPeerConnection.prototype.getStreamById = function(id) { - var result = null; - if (this._localStreams) { - this._localStreams.forEach(function(stream) { - if (stream.id === id) { - result = stream; - } - }); - } - if (this._remoteStreams) { - this._remoteStreams.forEach(function(stream) { - if (stream.id === id) { - result = stream; - } - }); - } - return result; - }; - } - if (!('addStream' in window.RTCPeerConnection.prototype)) { - var _addTrack = window.RTCPeerConnection.prototype.addTrack; - window.RTCPeerConnection.prototype.addStream = function(stream) { - if (!this._localStreams) { - this._localStreams = []; - } - if (this._localStreams.indexOf(stream) === -1) { - this._localStreams.push(stream); - } - var self = this; - stream.getTracks().forEach(function(track) { - _addTrack.call(self, track, stream); - }); - }; + var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID') + .map(function(line) { + var parts = line.substr(17).split(' '); + return parts.map(function(part) { + return parseInt(part, 10); + }); + }); + if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) { + secondarySsrc = flows[0][1]; + } - window.RTCPeerConnection.prototype.addTrack = function(track, stream) { - if (stream) { - if (!this._localStreams) { - this._localStreams = [stream]; - } else if (this._localStreams.indexOf(stream) === -1) { - this._localStreams.push(stream); - } - } - _addTrack.call(this, track, stream); - }; - } - if (!('removeStream' in window.RTCPeerConnection.prototype)) { - window.RTCPeerConnection.prototype.removeStream = function(stream) { - if (!this._localStreams) { - this._localStreams = []; - } - var index = this._localStreams.indexOf(stream); - if (index === -1) { - return; - } - this._localStreams.splice(index, 1); - var self = this; - var tracks = stream.getTracks(); - this.getSenders().forEach(function(sender) { - if (tracks.indexOf(sender.track) !== -1) { - self.removeTrack(sender); - } - }); - }; - } - }, - shimRemoteStreamsAPI: function(window) { - if (typeof window !== 'object' || !window.RTCPeerConnection) { - return; - } - if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) { - window.RTCPeerConnection.prototype.getRemoteStreams = function() { - return this._remoteStreams ? this._remoteStreams : []; + description.codecs.forEach(function(codec) { + if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) { + var encParam = { + ssrc: primarySsrc, + codecPayloadType: parseInt(codec.parameters.apt, 10) }; + if (primarySsrc && secondarySsrc) { + encParam.rtx = {ssrc: secondarySsrc}; + } + encodingParameters.push(encParam); + if (hasRed) { + encParam = JSON.parse(JSON.stringify(encParam)); + encParam.fec = { + ssrc: primarySsrc, + mechanism: hasUlpfec ? 'red+ulpfec' : 'red' + }; + encodingParameters.push(encParam); + } } - if (!('onaddstream' in window.RTCPeerConnection.prototype)) { - Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', { - get: function() { - return this._onaddstream; - }, - set: function(f) { - if (this._onaddstream) { - this.removeEventListener('addstream', this._onaddstream); - this.removeEventListener('track', this._onaddstreampoly); - } - this.addEventListener('addstream', this._onaddstream = f); - this.addEventListener('track', this._onaddstreampoly = function(e) { - var stream = e.streams[0]; - if (!this._remoteStreams) { - this._remoteStreams = []; - } - if (this._remoteStreams.indexOf(stream) >= 0) { - return; - } - this._remoteStreams.push(stream); - var event = new Event('addstream'); - event.stream = e.streams[0]; - this.dispatchEvent(event); - }.bind(this)); - } - }); - } - }, - shimCallbacksAPI: function(window) { - if (typeof window !== 'object' || !window.RTCPeerConnection) { - return; + }); + if (encodingParameters.length === 0 && primarySsrc) { + encodingParameters.push({ + ssrc: primarySsrc + }); + } + + // we support both b=AS and b=TIAS but interpret AS as TIAS. + var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b='); + if (bandwidth.length) { + if (bandwidth[0].indexOf('b=TIAS:') === 0) { + bandwidth = parseInt(bandwidth[0].substr(7), 10); + } else if (bandwidth[0].indexOf('b=AS:') === 0) { + // use formula from JSEP to convert b=AS to TIAS value. + bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95 + - (50 * 40 * 8); + } else { + bandwidth = undefined; } - var prototype = window.RTCPeerConnection.prototype; - var createOffer = prototype.createOffer; - var createAnswer = prototype.createAnswer; - var setLocalDescription = prototype.setLocalDescription; - var setRemoteDescription = prototype.setRemoteDescription; - var addIceCandidate = prototype.addIceCandidate; - - prototype.createOffer = function(successCallback, failureCallback) { - var options = (arguments.length >= 2) ? arguments[2] : arguments[0]; - var promise = createOffer.apply(this, [options]); - if (!failureCallback) { - return promise; - } - promise.then(successCallback, failureCallback); - return Promise.resolve(); - }; + encodingParameters.forEach(function(params) { + params.maxBitrate = bandwidth; + }); + } + return encodingParameters; +}; - prototype.createAnswer = function(successCallback, failureCallback) { - var options = (arguments.length >= 2) ? arguments[2] : arguments[0]; - var promise = createAnswer.apply(this, [options]); - if (!failureCallback) { - return promise; - } - promise.then(successCallback, failureCallback); - return Promise.resolve(); - }; +// parses http://draft.ortc.org/#rtcrtcpparameters* +SDPUtils.parseRtcpParameters = function(mediaSection) { + var rtcpParameters = {}; - var withCallback = function(description, successCallback, failureCallback) { - var promise = setLocalDescription.apply(this, [description]); - if (!failureCallback) { - return promise; - } - promise.then(successCallback, failureCallback); - return Promise.resolve(); - }; - prototype.setLocalDescription = withCallback; + // Gets the first SSRC. Note tha with RTX there might be multiple + // SSRCs. + var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(obj) { + return obj.attribute === 'cname'; + })[0]; + if (remoteSsrc) { + rtcpParameters.cname = remoteSsrc.value; + rtcpParameters.ssrc = remoteSsrc.ssrc; + } - withCallback = function(description, successCallback, failureCallback) { - var promise = setRemoteDescription.apply(this, [description]); - if (!failureCallback) { - return promise; - } - promise.then(successCallback, failureCallback); - return Promise.resolve(); - }; - prototype.setRemoteDescription = withCallback; + // Edge uses the compound attribute instead of reducedSize + // compound is !reducedSize + var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize'); + rtcpParameters.reducedSize = rsize.length > 0; + rtcpParameters.compound = rsize.length === 0; - withCallback = function(candidate, successCallback, failureCallback) { - var promise = addIceCandidate.apply(this, [candidate]); - if (!failureCallback) { - return promise; - } - promise.then(successCallback, failureCallback); - return Promise.resolve(); - }; - prototype.addIceCandidate = withCallback; - }, - shimGetUserMedia: function(window) { - var navigator = window && window.navigator; - - if (!navigator.getUserMedia) { - if (navigator.webkitGetUserMedia) { - navigator.getUserMedia = navigator.webkitGetUserMedia.bind(navigator); - } else if (navigator.mediaDevices && - navigator.mediaDevices.getUserMedia) { - navigator.getUserMedia = function(constraints, cb, errcb) { - navigator.mediaDevices.getUserMedia(constraints) - .then(cb, errcb); - }.bind(navigator); - } - } - }, - shimRTCIceServerUrls: function(window) { - // migrate from non-spec RTCIceServer.url to RTCIceServer.urls - var OrigPeerConnection = window.RTCPeerConnection; - window.RTCPeerConnection = function(pcConfig, pcConstraints) { - if (pcConfig && pcConfig.iceServers) { - var newIceServers = []; - for (var i = 0; i < pcConfig.iceServers.length; i++) { - var server = pcConfig.iceServers[i]; - if (!server.hasOwnProperty('urls') && - server.hasOwnProperty('url')) { - utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls'); - server = JSON.parse(JSON.stringify(server)); - server.urls = server.url; - delete server.url; - newIceServers.push(server); - } else { - newIceServers.push(pcConfig.iceServers[i]); - } - } - pcConfig.iceServers = newIceServers; - } - return new OrigPeerConnection(pcConfig, pcConstraints); - }; - window.RTCPeerConnection.prototype = OrigPeerConnection.prototype; - // wrap static methods. Currently just generateCertificate. - if ('generateCertificate' in window.RTCPeerConnection) { - Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { - get: function() { - return OrigPeerConnection.generateCertificate; - } - }); - } - }, - shimTrackEventTransceiver: function(window) { - // Add event.transceiver member over deprecated event.receiver - if (typeof window === 'object' && window.RTCPeerConnection && - ('receiver' in window.RTCTrackEvent.prototype) && - // can't check 'transceiver' in window.RTCTrackEvent.prototype, as it is - // defined for some reason even when window.RTCTransceiver is not. - !window.RTCTransceiver) { - Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { - get: function() { - return {receiver: this.receiver}; - } - }); - } - }, + // parses the rtcp-mux attrіbute. + // Note that Edge does not support unmuxed RTCP. + var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux'); + rtcpParameters.mux = mux.length > 0; - shimCreateOfferLegacy: function(window) { - var origCreateOffer = window.RTCPeerConnection.prototype.createOffer; - window.RTCPeerConnection.prototype.createOffer = function(offerOptions) { - var pc = this; - if (offerOptions) { - var audioTransceiver = pc.getTransceivers().find(function(transceiver) { - return transceiver.sender.track && - transceiver.sender.track.kind === 'audio'; - }); - if (offerOptions.offerToReceiveAudio === false && audioTransceiver) { - if (audioTransceiver.direction === 'sendrecv') { - audioTransceiver.setDirection('sendonly'); - } else if (audioTransceiver.direction === 'recvonly') { - audioTransceiver.setDirection('inactive'); - } - } else if (offerOptions.offerToReceiveAudio === true && - !audioTransceiver) { - pc.addTransceiver('audio'); - } + return rtcpParameters; +}; - var videoTransceiver = pc.getTransceivers().find(function(transceiver) { - return transceiver.sender.track && - transceiver.sender.track.kind === 'video'; - }); - if (offerOptions.offerToReceiveVideo === false && videoTransceiver) { - if (videoTransceiver.direction === 'sendrecv') { - videoTransceiver.setDirection('sendonly'); - } else if (videoTransceiver.direction === 'recvonly') { - videoTransceiver.setDirection('inactive'); - } - } else if (offerOptions.offerToReceiveVideo === true && - !videoTransceiver) { - pc.addTransceiver('video'); - } - } - return origCreateOffer.apply(pc, arguments); - }; +// parses either a=msid: or a=ssrc:... msid lines and returns +// the id of the MediaStream and MediaStreamTrack. +SDPUtils.parseMsid = function(mediaSection) { + var parts; + var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:'); + if (spec.length === 1) { + parts = spec[0].substr(7).split(' '); + return {stream: parts[0], track: parts[1]}; + } + var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(msidParts) { + return msidParts.attribute === 'msid'; + }); + if (planB.length > 0) { + parts = planB[0].value.split(' '); + return {stream: parts[0], track: parts[1]}; } }; -// Expose public methods. -module.exports = { - shimCallbacksAPI: safariShim.shimCallbacksAPI, - shimLocalStreamsAPI: safariShim.shimLocalStreamsAPI, - shimRemoteStreamsAPI: safariShim.shimRemoteStreamsAPI, - shimGetUserMedia: safariShim.shimGetUserMedia, - shimRTCIceServerUrls: safariShim.shimRTCIceServerUrls, - shimTrackEventTransceiver: safariShim.shimTrackEventTransceiver, - shimCreateOfferLegacy: safariShim.shimCreateOfferLegacy - // TODO - // shimPeerConnection: safariShim.shimPeerConnection +// Generate a session ID for SDP. +// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1 +// recommends using a cryptographically random +ve 64-bit value +// but right now this should be acceptable and within the right range +SDPUtils.generateSessionId = function() { + return Math.random().toString().substr(2, 21); }; -},{"../utils":13}],13:[function(require,module,exports){ -/* - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. - */ - /* eslint-env node */ -'use strict'; +// Write boilder plate for start of SDP +// sessId argument is optional - if not supplied it will +// be generated randomly +// sessVersion is optional and defaults to 2 +// sessUser is optional and defaults to 'thisisadapterortc' +SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) { + var sessionId; + var version = sessVer !== undefined ? sessVer : 2; + if (sessId) { + sessionId = sessId; + } else { + sessionId = SDPUtils.generateSessionId(); + } + var user = sessUser || 'thisisadapterortc'; + // FIXME: sess-id should be an NTP timestamp. + return 'v=0\r\n' + + 'o=' + user + ' ' + sessionId + ' ' + version + + ' IN IP4 127.0.0.1\r\n' + + 's=-\r\n' + + 't=0 0\r\n'; +}; -var logDisabled_ = true; -var deprecationWarnings_ = true; +SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) { + var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); -// Utility methods. -var utils = { - disableLog: function(bool) { - if (typeof bool !== 'boolean') { - return new Error('Argument type: ' + typeof bool + - '. Please use a boolean.'); - } - logDisabled_ = bool; - return (bool) ? 'adapter.js logging disabled' : - 'adapter.js logging enabled'; - }, - - /** - * Disable or enable deprecation warnings - * @param {!boolean} bool set to true to disable warnings. - */ - disableWarnings: function(bool) { - if (typeof bool !== 'boolean') { - return new Error('Argument type: ' + typeof bool + - '. Please use a boolean.'); - } - deprecationWarnings_ = !bool; - return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled'); - }, - - log: function() { - if (typeof window === 'object') { - if (logDisabled_) { - return; - } - if (typeof console !== 'undefined' && typeof console.log === 'function') { - console.log.apply(console, arguments); - } - } - }, + // Map ICE parameters (ufrag, pwd) to SDP. + sdp += SDPUtils.writeIceParameters( + transceiver.iceGatherer.getLocalParameters()); - /** - * Shows a deprecation warning suggesting the modern and spec-compatible API. - */ - deprecated: function(oldMethod, newMethod) { - if (!deprecationWarnings_) { - return; - } - console.warn(oldMethod + ' is deprecated, please use ' + newMethod + - ' instead.'); - }, - - /** - * Extract browser version out of the provided user agent string. - * - * @param {!string} uastring userAgent string. - * @param {!string} expr Regular expression used as match criteria. - * @param {!number} pos position in the version string to be returned. - * @return {!number} browser version. - */ - extractVersion: function(uastring, expr, pos) { - var match = uastring.match(expr); - return match && match.length >= pos && parseInt(match[pos], 10); - }, - - /** - * Browser detector. - * - * @return {object} result containing browser and version - * properties. - */ - detectBrowser: function(window) { - var navigator = window && window.navigator; - - // Returned result object. - var result = {}; - result.browser = null; - result.version = null; - - // Fail early if it's not a browser - if (typeof window === 'undefined' || !window.navigator) { - result.browser = 'Not a browser.'; - return result; + // Map DTLS parameters to SDP. + sdp += SDPUtils.writeDtlsParameters( + transceiver.dtlsTransport.getLocalParameters(), + type === 'offer' ? 'actpass' : 'active'); + + sdp += 'a=mid:' + transceiver.mid + '\r\n'; + + if (transceiver.direction) { + sdp += 'a=' + transceiver.direction + '\r\n'; + } else if (transceiver.rtpSender && transceiver.rtpReceiver) { + sdp += 'a=sendrecv\r\n'; + } else if (transceiver.rtpSender) { + sdp += 'a=sendonly\r\n'; + } else if (transceiver.rtpReceiver) { + sdp += 'a=recvonly\r\n'; + } else { + sdp += 'a=inactive\r\n'; + } + + if (transceiver.rtpSender) { + // spec. + var msid = 'msid:' + stream.id + ' ' + + transceiver.rtpSender.track.id + '\r\n'; + sdp += 'a=' + msid; + + // for Chrome. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' ' + msid; + if (transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' ' + msid; + sdp += 'a=ssrc-group:FID ' + + transceiver.sendEncodingParameters[0].ssrc + ' ' + + transceiver.sendEncodingParameters[0].rtx.ssrc + + '\r\n'; } + } + // FIXME: this should be written by writeRtpDescription. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + } + return sdp; +}; - // Firefox. - if (navigator.mozGetUserMedia) { - result.browser = 'firefox'; - result.version = this.extractVersion(navigator.userAgent, - /Firefox\/(\d+)\./, 1); - } else if (navigator.webkitGetUserMedia) { - // Chrome, Chromium, Webview, Opera, all use the chrome shim for now - if (window.webkitRTCPeerConnection) { - result.browser = 'chrome'; - result.version = this.extractVersion(navigator.userAgent, - /Chrom(e|ium)\/(\d+)\./, 2); - } else { // Safari (in an unpublished version) or unknown webkit-based. - if (navigator.userAgent.match(/Version\/(\d+).(\d+)/)) { - result.browser = 'safari'; - result.version = this.extractVersion(navigator.userAgent, - /AppleWebKit\/(\d+)\./, 1); - } else { // unknown webkit-based browser. - result.browser = 'Unsupported webkit-based browser ' + - 'with GUM support but no WebRTC support.'; - return result; - } - } - } else if (navigator.mediaDevices && - navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { // Edge. - result.browser = 'edge'; - result.version = this.extractVersion(navigator.userAgent, - /Edge\/(\d+).(\d+)$/, 2); - } else if (navigator.mediaDevices && - navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) { - // Safari, with webkitGetUserMedia removed. - result.browser = 'safari'; - result.version = this.extractVersion(navigator.userAgent, - /AppleWebKit\/(\d+)\./, 1); - } else { // Default fallthrough: not supported. - result.browser = 'Not a supported browser.'; - return result; +// Gets the direction from the mediaSection or the sessionpart. +SDPUtils.getDirection = function(mediaSection, sessionpart) { + // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv. + var lines = SDPUtils.splitLines(mediaSection); + for (var i = 0; i < lines.length; i++) { + switch (lines[i]) { + case 'a=sendrecv': + case 'a=sendonly': + case 'a=recvonly': + case 'a=inactive': + return lines[i].substr(2); + default: + // FIXME: What should happen here? } + } + if (sessionpart) { + return SDPUtils.getDirection(sessionpart); + } + return 'sendrecv'; +}; - return result; - }, +SDPUtils.getKind = function(mediaSection) { + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].split(' '); + return mline[0].substr(2); +}; + +SDPUtils.isRejected = function(mediaSection) { + return mediaSection.split(' ', 2)[1] === '0'; +}; + +SDPUtils.parseMLine = function(mediaSection) { + var lines = SDPUtils.splitLines(mediaSection); + var parts = lines[0].substr(2).split(' '); + return { + kind: parts[0], + port: parseInt(parts[1], 10), + protocol: parts[2], + fmt: parts.slice(3).join(' ') + }; +}; +SDPUtils.parseOLine = function(mediaSection) { + var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0]; + var parts = line.substr(2).split(' '); + return { + username: parts[0], + sessionId: parts[1], + sessionVersion: parseInt(parts[2], 10), + netType: parts[3], + addressType: parts[4], + address: parts[5] + }; }; -// Export. -module.exports = { - log: utils.log, - deprecated: utils.deprecated, - disableLog: utils.disableLog, - disableWarnings: utils.disableWarnings, - extractVersion: utils.extractVersion, - shimCreateObjectURL: utils.shimCreateObjectURL, - detectBrowser: utils.detectBrowser.bind(utils) +// a very naive interpretation of a valid SDP. +SDPUtils.isValidSDP = function(blob) { + if (typeof blob !== 'string' || blob.length === 0) { + return false; + } + var lines = SDPUtils.splitLines(blob); + for (var i = 0; i < lines.length; i++) { + if (lines[i].length < 2 || lines[i].charAt(1) !== '=') { + return false; + } + // TODO: check the modifier a bit more. + } + return true; }; -},{}]},{},[3])(3) +// Expose public methods. +if (typeof module === 'object') { + module.exports = SDPUtils; +} + +},{}]},{},[1])(1) });