:meth:`.WNetworkNativeTransportProto.close_client_socket` method implementation

def close_client_socket(self, config, close_fd=True):
		""" :meth:`.WNetworkNativeTransportProto.close_client_socket` method implementation
		"""
		if close_fd is True:
			self.__client_socket.close()
		self.__client_socket = None