def start(self):
self.start_protocol_factories()
config = Config()
config.add_service('', self._port, self._wallp_server_factory)
pipe = config.add_pipe(self._wp_change_message_factory)
config.set_logger(log)
config.start_logger(level=logging.DEBUG)
config.do_after_start(self.after_start, pipe)
self._server = Server(config)
self._server.start()
