Fixed socket.io WebSocket server example from http://www.letseehere.com/reverse-proxy-web-sockets

websocket-server.js

var io = require('socket.io');

var http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs"),
    port = process.argv[2] || 8888;

var server = http.createServer(function(request, response) {

    var uri = url.parse(request.url).pathname,
        filename = path.join(process.cwd(), uri);

    path.exists(filename, function(exists) {
        if(!exists) {
                response.writeHead(404, {"Content-Type": "text/plain"});
                response.write("404 Not Found\n");
                response.end();
                return;
        }

        if (fs.statSync(filename).isDirectory()) filename += '/index.html';

        fs.readFile(filename, "binary", function(err, file) {
            if(err) {
            response.writeHead(500, {"Content-Type": "text/plain"});
            response.write(err + "\n");
            response.end();
            return;
            }

            response.writeHead(200);
            response.write(file, "binary");
            response.end();
            });
    });
});
server.listen(80);

// socket.io
var socket = io.listen(server);