broadcast.js

#!/usr/bin/env node

var WebSocketServer = require('websocket').server; 
var http = require('http'); 

var clients = []; // 임의로 ID부여하기 위함 
var idlist = []; 
var id = 0; 

var server = http.createServer(function(request, response) { 
	console.log((new Date()) + ' Received request for ' + request.url); 
	response.writeHead(404); 
	response.end(); 
}); 

server.listen(8080, function() { 
	console.log((new Date()) + ' Server is listening on port 8080'); 
}); 

wsServer = new WebSocketServer({ 
	httpServer: server, 
	// You should not use autoAcceptConnections for production 
	// applications, as it defeats all standard cross-origin protection 
	// facilities built into the protocol and the browser. You should 
	// *always* verify the connection's origin and decide whether or not 
	// to accept it. 

	autoAcceptConnections: false 
}); 

function originIsAllowed(origin) { 
	// put logic here to detect whether the specified origin is allowed. 

	return true; 
} 

wsServer.on('request', function(request) { 

	if (!originIsAllowed(request.origin)) { 
		// Make sure we only accept requests from an allowed origin 
		
		request.reject(); 
		console.log((new Date()) + ' Connection from origin ' + request.origin + ' rejected.'); 
		return; 
	} 
	
	var connection = request.accept(null, request.origin); 
	clients.push(connection); 

	// 임의로 id값을 할당함. request.key값으로 client 구분 
	idlist[request.key] = id++; 

	console.log((new Date()) + ' Connection accepted.'); 

	connection.on('message', function(message) { 

		if (message.type === 'utf8') { 

			console.log('Received Message: ' + message.utf8Data); 
			// 브로드캐스팅!! 

			clients.forEach(function(cli) { 
				msg = idlist[request.key]+ ': ' +message.utf8Data; 
				cli.sendUTF(msg); 
			}); 

		} else if (message.type === 'binary') { 
			console.log('Received Binary Message of ' + message.binaryData.length + ' bytes'); 
		} 
	}); 

	connection.on('close', function(reasonCode, description) { 
		console.log((new Date()) + ' Peer ' + connection.remoteAddress + ' disconnected.'); 
	}); 
});