Is it possible to set a timeout on a socket in Twisted?

I realize I'm probably just dumb and missing something big and important, but I can't figure out how to specify a timeout in twisted using reactor.listenUDP. My goal is to be able to specify a timeout, and after said amount of time, if DatagramProtocol.datagramReceived has not been executed, have it execute a callback or something that I can use to call reactor.stop(). Any help or advice is appreciated. Thanks

From stackoverflow Jurassic_C

• Since Twisted is event driven, you don't need a timeout per se. You simply need to set a state variable (like datagramRecieved) when you receive a datagram and register a looping call that checks the state variable, stops the reactor if appropriate then clears state variable:

  from twisted.internet import task
  from twisted.internet import reactor
  
  datagramRecieved = False
  timeout = 1.0 # One second
  
  # UDP code here
  
  def testTimeout():
      global datagramRecieved
      if not datagramRecieved:
          reactor.stop()
      datagramRecieved = False
  
  
  l = task.LoopingCall(testTimeout)
  l.start(timeout) # call every second
  
  # l.stop() will stop the looping calls
  reactor.run()
  

  From Aaron Maenpaa

• I think reactor.callLater would work better than LoopingCall. Something like this:

  
  class Protocol(DatagramProtocol):
      def __init__(self, timeout):
          self.timeout = timeout
  
  def datagramReceived(self, datagram):
      self.timeout.cancel()
      # ...
  
  
  timeout = reactor.callLater(5, timedOut)
  reactor.listenUDP(Protocol(timeout))
  

  From daf