code: def stop(self, *args):
          
  
          super(UDPTendrilManager, self).stop(*args)
  
          # Reset the socket and socket event
          self._sock = None
          self._sock_event.clear()
docs: Stops the TendrilManager.  Requires cooperation from the
          listener implementation, which must watch the ``running``
          attribute and ensure that it stops accepting connections
          should that attribute become False.  Note that some tendril
          managers will not exit from the listening thread until all
          connections have been closed.