sqlWarsServer.app.js

 var
        gameport        = process.env.PORT || 4004,

        io              = require('socket.io'),
        express         = require('express'),
        UUID            = require('node-uuid'),

        verbose         = false,
		http            = require('http'),
        app             = express();

    /* Express server set up. */

    //The express server handles passing our content to the browser,
    //As well as routing users where they need to go. This example is bare bones
    //and will serve any file the user requests from the root of your web server (where you launch the script from)
    //so keep this in mind - this is not a production script but a development teaching tool.

    //Log something so we know that it succeeded.
    console.log('\t :: Express :: Listening on port ' + gameport );

    //By default, we forward the / path to index.html automatically.
    app.get( '/', function( req, res ){
        res.sendfile( __dirname + '/static/game.html' );
    });

    //Server static content from static directory
    app.use(express.static('static'));

    //This handler will listen for requests on /*, any file from the root of our server.
    //See expressjs documentation for more info on routing.

    app.get( '/*' , function( req, res, next ) {

        //This is the current file they have requested
        var file = req.params[0];

        //For debugging, we can track what files are requested.
        if(verbose) console.log('\t :: Express :: file requested : ' + file);

        //Send the requesting client the file.
        res.sendfile( __dirname + '/' + file );

    }); //app.get *

	var server = http.createServer(app);
	server.listen(gameport);

    //Create a socket.io instance using our express server
    var sio = io.listen(server);

	sio.use(function(socket, next) {
		  var handshakeData = socket.request;
		  // make sure the handshake data looks good as before
		  // if error do this:
			//next(new Error('not authorized');
		  // else just call next
		  next();
		});

    //Socket.io will call this function when a client connects,
    //So we can send that client a unique ID we use so we can
    //maintain the list of players.
    sio.sockets.on('connection', function (client) {

        //Generate a new UUID, looks something like
        //5b2ca132-64bd-4513-99da-90e838ca47d1
        //and store this on their socket/connection
        client.userid = UUID();

        //tell the player they connected, giving them their id
        client.emit('onconnected', { id: client.userid } );

        //Useful to know when someone connects
        console.log('\t socket.io:: player ' + client.userid + ' connected');

        //When this client disconnects
        client.on('disconnect', function () {

            //Useful to know when someone disconnects
            console.log('\t socket.io:: client disconnected ' + client.userid );

        }); //client.on disconnect

    }); //sio.sockets.on connection