server.js

/*
This code was developed by @ArinSime and WebRTC.ventures for a WebRTC blog post.  
You are welcome to use it at your own risk as starter code for your applications, 
but please be aware that this is not a complete code example with all the necessary 
security and privacy considerations implemented that a production app would require.  
It is for educational purposes only, and any other use is done at your own risk.
*/

//Server.js:  This is the core Node.js configuration code, and also used for
//setting up signaling channels to be used by socket.io

var express = require('express.io');
var app = express();
app.http().io();
var PORT = 3000;
console.log('server started on port ' + PORT);

app.use(express.static(__dirname + '/public'));

app.get('/', function(req, res){
	res.render('index.ejs');
});

app.listen(process.env.PORT || PORT);

app.io.route('ready', function(req) {
	req.io.join(req.data.signal_room);
})

app.io.route('signal', function(req) {
	//Note the use of req here for broadcasting so only the sender doesn't receive their own messages
	req.io.room(req.data.room).broadcast('signaling_message', {
        type: req.data.type,
		message: req.data.message
    });
})