How to get client connection object in tornado websocket, Python -

i using tornado websocket simple test code. in test code, want tornado.websocket.websockethandler.

for example, used way below.

class convplayerinterface(object):      class websockethandler(tornado.websocket.websockethandler):          client = none         queue = ipcqueue.ipcqueue()          def open(self):             print 'new connection'             self.client = self #in simple code, handles 1 client.                   self.write_message("connection open")          def on_message(self, message):             self.queue.put(message)          def on_close(self):             print 'connection closed'      def __init__(self, url='/ws'):         self.application = tornado.web.application([(url, self.websockethandler),])         self.httpserver = tornado.httpserver.httpserver(self.application)         self.httpserver.listen(8888)          self.queue = self.websockethandler.queue          self.ioloop = threading.thread(target = tornado.ioloop.ioloop.instance().start)      def start(self):         self.ioloop.start()      def get(self):         return self.queue.get()      def put(self, command):         self.websockethandler.client.write_message(command) 

but point when calls self.websockethandler.client.write_message(command) in put() method, python says client non type.

any advice?

and how used client connection handler object in tornado?

in part of code

 def put(self, command):         self.websockethandler.client.write_message(command) 

you accessing websockethandler class, not class member. , "client" attribute of websockethandler none, expected.

websockethandler instance created each request tornado accept, there can several websocket handlers simultaneously.

if want have handle 1 connection - can this:

class convplayerinterface(object):     the_only_handler = none      class websockethandler(tornado.websocket.websockethandler):          client = none         queue = ipcqueue.ipcqueue()          def open(self):             print 'new connection'             convplayerinterface.the_only_handler = self             self.write_message("connection open")          def on_message(self, message):             self.queue.put(message)          def on_close(self):             convplayerinterface.the_only_handler = none             print 'connection closed'      def __init__(self, url='/ws'):         self.application = tornado.web.application([(url, self.websockethandler),])         self.httpserver = tornado.httpserver.httpserver(self.application)         self.httpserver.listen(8888)          self.queue = self.websockethandler.queue          self.ioloop = threading.thread(target = tornado.ioloop.ioloop.instance().start)      def start(self):         self.ioloop.start()      def get(self):         return self.queue.get()      def put(self, command):         if self.the_only_handler not none             self.the_only_handler.write_message(command)