code: def listen(self, callback=None, timeout=(5, 300)):
          
          if self._running:
              return False
          # if self.devices() is False:
          #    return False
          self._queue = Queue()
          self._running = True
          self._timeout = timeout
          self._callback_listen = callback
          threading.Thread(target=self._thread_listen, args=()).start()
          threading.Thread(target=self._thread_worker, args=()).start()
          return True
docs: Start the &listen long poll and return immediately.