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POpython Tornado websockets how to send message every X seconds?
 

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    <p>I am trying to cobble together a test which allows websockets clients to connect to a Tornado server and I want the Tornado server to send out a message to all clients every X seconds.</p> <p>The reason I am doing this is because wbesockets connections are being silently dropped somewhere and I am wondering of periodic "pings" sent by the websockets server will maintain the connection.</p> <p>I'm afraid it's a pretty noobish question and the code below is rather a mess. I just don't have my head wrapped around Tornado and scope enough to make it work.</p> <pre><code>import tornado.httpserver import tornado.websocket import tornado.ioloop import tornado.web import tornado.gen import time from tornado import gen class WSHandler(tornado.websocket.WebSocketHandler): def open(self): print 'http://mailapp.crowdwave.com/girlthumb.jpg' self.write_message("http://www.example.com/girlthumb.jpg") def on_message(self, message): print 'Incoming message:', message self.write_message("http://www.example.com/girlthumb.jpg") def on_close(self): print 'Connection was closed...' @gen.engine def f(): yield gen.Task(tornado.ioloop.IOLoop.instance().add_timeout, time.time() + 8) self.write_message("http://www.example.com/x.png") print 'x' @gen.engine def g(): yield gen.Task(tornado.ioloop.IOLoop.instance().add_timeout, time.time() + 4) self.write_message("http://www.example.com/y.jpg") print 'y' application = tornado.web.Application([ (r'/ws', WSHandler), ]) if __name__ == "__main__": tornado.ioloop.IOLoop.instance().add_callback(f) tornado.ioloop.IOLoop.instance().add_callback(g) http_server = tornado.httpserver.HTTPServer(application) http_server.listen(8888) tornado.ioloop.IOLoop.instance().start() </code></pre>
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