在heroku上托管的webrtc视频聊天服务器

Question

我正在尝试使用webrtc构建一个简单的视频聊天服务。我指的是介绍webrtc基础的html5rocks文章中给出的教程.. [http://www.html5rocks.com/en/tutorials/webrtc/basics/] [1]

server.js 在localhost 上使用node-static 工作正常，并提供完美的视频流和聊天服务。问题是当我尝试时在heroku上托管它 ..视频流不起作用或者我应该说没有server.js的功能工作..浏览器窗口只显示一个文本框，这是我的index.html文件的基本布局..所以在我的代码中确实存在一些问题。在server.js文件中缺少某些东西，这是在heroku上托管所必需的。这是Server.js的代码。请帮我解决问题。告诉我正确的托管它的方式因为我知道我在这里遗漏了一些东西..

var static = require('node-static');
/*var http = require('http');
var file = new(static.Server)();
var app = http.createServer(function (req, res) {
  file.serve(req, res);
}).listen(2013);
*/

 var express = require('express');
 var app = express();
 console.log(express.static(__dirname + '/js'));
 app.use(express.static(__dirname + '/js'));
 app.all('*', function(req, res){
    res.sendfile("index.html");
 });

 app.listen(9000);


var io = require('socket.io').listen(app);
io.sockets.on('connection', function (socket){

    function log(){
        var array = [">>> "];
      for (var i = 0; i < arguments.length; i++) {
        array.push(arguments[i]);
      }
        socket.emit('log', array);
    }

    socket.on('message', function (message) {
        log('Got message: ', message);
        socket.broadcast.emit('message', message); // should be room only
    });

    socket.on('create or join', function (room) {
        var numClients = io.sockets.clients(room).length;

        log('Room ' + room + ' has ' + numClients + ' client(s)');
        log('Request to create or join room', room);

        if (numClients == 0){
            socket.join(room);
            socket.emit('created', room);
        } else if (numClients == 1) {
            io.sockets.in(room).emit('join', room);
            socket.join(room);
            socket.emit('joined', room);
        } else { // max two clients
            socket.emit('full', room);
        }
        socket.emit('emit(): client ' + socket.id + ' joined room ' + room);
        socket.broadcast.emit('broadcast(): client ' + socket.id + ' joined room ' + room);

    });

});