package.json

{
  "name": "herokuwstest",
  "version": "0.0.1",
  "repository": {
    "type": "git",
    "url": "git://github.com/einaros/ws.git"
  },
  "dependencies": {
    "ws": "0.4.x",
    "express": "3.x",
    "nodetime": "0.8.x"
  },
  "engines": {
    "node": "0.10.x",
    "npm": "1.2.x"
  }
}

Procfile

web: node server.js

server.js

/*
// optional, track OS load, CPU etc with Nodetime

if(process.env.NODETIME_ACCOUNT_KEY) {
        require("nodetime").profile({
                accountKey: process.env.NODETIME_ACCOUNT_KEY,
                appName: "herokuwstest1"
        });
}
*/

var WebSocketServer = require('ws').Server
, http = require('http')
, express = require('express')
, app = express()
, port = process.env.PORT || 5000;

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

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

var wss = new WebSocketServer({server: server});

wss.on('connection', function(ws) {
        ws.send(JSON.stringify(new Date()), function() {});
        
        ws.on('close', function() {
        });
});