app.js

/**
 * Module dependencies.
 */

var express= require('express');
var http = require('http');
var path = require('path');
var socket=require('socket.io');
var Emitter=require('events').EventEmitter;
var routes=require('./config/routes');
var emitter=new Emitter();


var app=express();
var server=http.createServer(app);
var io=socket.listen(server);

// all environments
app.set('port', process.env.PORT || 3000);

app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));

// development only
if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}

routes(app, emitter);


server.listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
});

io.sockets.on('connection', function (socket){
	emitter.on('change', function(){
		socket.emit('new');
	});
});