on_message_out Event
Fired when an outgoing message has been sent and/or fully acknowledged.
Syntax
class MQTTMessageOutEventParams(object): @property def packet_id() -> int: ... @property def topic() -> str: ... @property def qos() -> int: ... @property def message() -> bytes: ... @property def retained() -> bool: ... @property def duplicate() -> bool: ... # In class MQTT: @property def on_message_out() -> Callable[[MQTTMessageOutEventParams], None]: ... @on_message_out.setter def on_message_out(event_hook: Callable[[MQTTMessageOutEventParams], None]) -> None: ...
Remarks
The on_message_out event fires once for each outgoing message either immediately after it is sent (QoS 0), or after it has been fully acknowledged by the receiver (QoS 1 and 2).
- PacketId: The message packet Id. This will always be -1 if QOS is 0.
- Topic: The message's topic string.
- QOS: The message's QoS level.
- Message: The message data.
- Retained: Whether or not this message was sent with the "Retain" flag set.
- Duplicate: Whether or not this message was sent with the "Duplicate" flag set.
Refer to on_message_ack for more information about QoS 1 and 2 message processing steps.
// MessageOut event handler.
mqtt1.OnMessageOut += (s, e) => {
Console.WriteLine("Send message to topic '" + e.Topic + "' with QoS " + e.QOS + ":");
Console.WriteLine(e.Message);
};