def send_echo(controller, switch): """Send echo request to a datapath. Keep the connection alive through symmetric echoes. """ echo = EchoRequest(data=b'kytosd_13') emit_message_out(controller, switch.connection, echo)
def test_handle_echo_request(self): """Test handling echo request message.""" event_name = 'kytos/of_core.v0x04.messages.in.ofpt_echo_request' switch = get_switch_mock() switch.connection = get_connection_mock( 0x04, get_switch_mock("00:00:00:00:00:00:00:02")) data = b'\x04\x02\x00\x0c\x00\x00\x00\x00\x68\x6f\x67\x65' echo_request = EchoRequest() echo_request.unpack(data) event = KytosEvent(name=event_name, content={ 'source': switch.connection, 'message': echo_request }) self.napp.handle_echo_request(event) of_event = self.napp.controller.buffers.msg_out.get() self.assertEqual(of_event.name, 'kytos/of_core.v0x04.messages.out.ofpt_echo_reply')