asd

import tornado.ioloop
import tornado.web
import json
import os

serverdir = os.path.dirname(os.path.realpath(__file__))
rootdir = os.path.abspath(os.path.join(serverdir, os.pardir))
clientdir = os.path.join(rootdir, "client")

class HandlerMixin(object):
  listeners = []
  
	def add_listener(self, callback):
		handler = HandlerMixin()
		handler.listeners.append(callback)
		print('Total listeners: %i' % len(handler.listeners))
		
	def send_message(self, message):
		handler = HandlerMixin
		print('Sending messages to %i listeners' % len(handler.listeners))
		for listener in handler.listeners:
			listener(message)
		handler.listeners =[]
		
class MainHandler(tornado.web.RequestHandler,HandlerMixin):
	@tornado.web.asynchronous
	def get(self):
		self.render(clientdir +"/chatindex.html")
		self.add_listener(self.async_callback(self._callback))
	def post(self):
		message=self.get_argument('chattext', None)
		print('Message:%s' % message)
		self.send_message(message)
	def _callback(self, message):
		if self.request.connection.stream.closed():
			return
		self.finish(message)
		
class Application(tornado.web.Application):
    def __init__(self):
        handlers = [
            (r"/", MainHandler),
        ] 
        settings = dict(
            autoescape=None,
        )
        tornado.web.Application.__init__(self, handlers, **settings)
if __name__ == "__main__":
	application = Application()
	application.listen(34543)
	tornado.ioloop.IOLoop.instance().start()