code: def server_socket(self, config):
  		
  		if self.__server_socket is None:
  			self.__server_socket = self.create_server_socket(config)
  			self.__server_socket.bind(self.bind_socket(config).pair())
  		return self.__server_socket
docs: :meth:`.WNetworkNativeTransportProto.server_socket` method implementation