python tornado websocket server send message to specific client -

is possible, if multiple socket clients connected tornado websocket server, send message specific one? don't know if there possibility of getting client's id , send message id.

my client code is:

from tornado.ioloop import ioloop, periodiccallback tornado import gen tornado.websocket import websocket_connect   class client(object):     def __init__(self, url, timeout):         self.url = url         self.timeout = timeout         self.ioloop = ioloop.instance()         self.ws = none         self.connect()         periodiccallback(self.keep_alive, 20000, io_loop=self.ioloop).start()         self.ioloop.start()       @gen.coroutine     def connect(self):         print "trying connect"         try:             self.ws = yield websocket_connect(self.url)         except exception, e:             print "connection error"         else:             print "connected"              self.run()      @gen.coroutine     def run(self):           while true:             msg = yield self.ws.read_message()             print msg             if msg none:                 print "connection closed"                 self.ws = none                 break      def keep_alive(self):         if self.ws none:             self.connect()         else:             self.ws.write_message("keep alive")  if __name__ == "__main__":     client = client("ws://xxx", 5 ) 

when client connects websocket server invoked method 'open' on websockethandler, in method can keep socket in appliaction.

like this:

from tornado import web tornado.web import url tornado.websocket import websockethandler   class application(web.application):     def __init__(self):         handlers = [             url(r"/websocket/server/(?p<some_id>[0-9]+)/", websocketserver),         ]         web.application.__init__(self, handlers)         self.sockets = {}   class websocketserver(websockethandler):      def open(self, some_id):         self.application.sockets[some_id] = self      def on_message(self, message):         self.write_message(u"you said: " + message)      def on_close(self):         print("websocket closed") 

you may use message connection, in message have tell socket id , save socket application.