ws4py

import sys
import json

from wsgiref.simple_server import make_server
from ws4py.websocket import WebSocket
from ws4py.server.wsgirefserver import WSGIServer, WebSocketWSGIRequestHandler
from ws4py.server.wsgiutils import WebSocketWSGIApplication

class MyWebSocket(WebSocket):
    def __init__(self, sock, ps, es, e):
        self.e = e
        super(MyWebSocket, self).__init__(sock, ps, es, e)

    def received_message(self, message):
        self.send(json.dumps(dict((k, str(v)) for k, v in self.e.iteritems())), False)

class MyApplication(WebSocketWSGIApplication):
    def __call__(self, e, sr):
        path_info = e["PATH_INFO"]

        if path_info == "/ws":
          return super(MyApplication, self).__call__(e, sr)

        sr("200 Ok", [("Content-Type", "text/html")])
        return "\n".join("<pre>%s=%s</pre>" % (k, v) for k, v in e.iteritems())


server = make_server('', 9000, server_class=WSGIServer,
                     handler_class=WebSocketWSGIRequestHandler,
                     app=MyApplication(handler_cls=MyWebSocket))
server.initialize_websockets_manager()
server.serve_forever()