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copied!<p>I'd recommend looking at the project Socket.IO and Socket.IO-node. It uses HTML5 WebSockets if available, and falls back automatically and gracefully (no intervention required) to Flash sockets and XHR-polling as necessary</p> <p>Here's a script to download the files:</p> <pre><code>mkdir socket.io cd socket.io git clone https://github.com/LearnBoost/Socket.IO.git --recursive git clone https://github.com/LearnBoost/Socket.IO-node.git --recursive </code></pre> <p>Here's the server.js file:</p> <pre><code>var http=require('http'); var url=require('url'); var fs=require('fs'); var sys=require('sys'); var io=require('./socket.io/Socket.IO-node'); //adjust path as necessary... var server=http.createServer(function(req,res){ res.writeHead(200,{'Content-Type':'text/html'}); res.write('Hello world'); res.end(); }); server.listen(8000); var socket=io.listen(server); socket.on('connection', function(client){ onConnection(client); client.on('message', function(){ onMessage(); }) client.on('disconnect', function(){ onDisconnect(); }) }); function onConnection(client){ console.log('connection'); //client.connected; //tests if connected //client.send("message"); //client.broadcast("message"); //send to all other conns } function onMessage(){ console.log('message'); } function onDisconnect(){ console.log('disconnect'); } }); </code></pre> <p>Run the above server with <code>sudo node server.js</code></p> <p>And here is your index.html to be run in a browser:</p> <pre><code><script src="./socket.io/Socket.IO/socket.io.js" type="text/javascript" charset="utf-8"></script>  <script> var host="localhost"; var port=8000; var socket=new io.Socket(host,{'port':port}); socket.connect(); socket.on('connect',function(){onConnect();}) socket.on('message',function(data){onMessage(data);}) socket.on('disconnect',function(){onDisconnect();}); function onConnect(){ ///alert('connect'); } function onMessage(data){ //alert('message'); } function onDisconnect(){ //alert('disconnect'); socket.connect(); } </script> </code></pre>

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