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POCall a twisted protocol method from another thread
 

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    <p>I have made a Home Security program in Python that uses Raspberry Pi's GPIOs to sense movement and actuate the siren. The users activate/deactivate the system using a NFC Tag to a nfc reder connected also to raspberry pi.</p> <p>For this I need to constantly check for nfc tags in a non blocking manner and at the same time constantly check the sensors for movement also non blocking. I need some more parallel stuff to do but I think these two are enough to make my point.</p> <p>Right now I use threads which I start/stop like this - <a href="https://stackoverflow.com/questions/6524459/stopping-a-thread-python">Stopping a thread after a certain amount of time</a> - I'm not sure if this is the optimal way but as of now the system works fine.</p> <p>Now I want to extend its functionality to offer notifications through websockets. I found that this can be done with Twisted but I am confused..</p> <p>Here is an example code of how I am trying to do it:</p> <pre><code>from twisted.internet import reactor from autobahn.websocket import WebSocketServerFactory, \ WebSocketServerProtocol, \ listenWS def thread1(stop_event): while(not stop_event.is_set()): stop_event.wait(4) print "checking sensor" # sensor_state = GPIO.input(11) if sensor_state == 1: # how can I call send_m("sensor detected movement") #&lt;--- t1_stop_event.set() t1_stop_event = Event() t1 = Thread(target=thread1, args=(t1_stop_event,)) class EchoServerProtocol(WebSocketServerProtocol): def onMessage(self, msg, binary): print "received: "+msg print "stopping thread1" t1_stop_event.set() def send_m(self, msg): self.sendMessage(msg) if __name__ == '__main__': t1.start() factory = WebSocketServerFactory("ws://localhost:9000") factory.protocol = EchoServerProtocol listenWS(factory) reactor.run() </code></pre> <p>So how can I call the send method of the server protocol from a thread like the thread1?</p>
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