MessageOut Event

Fired when an outgoing message has been sent and/or fully acknowledged.

Object Oriented Interface

public function fireMessageOut($param);

Procedural Interface

ipworksmq_mqtt_register_callback($res, 8, array($this, 'fireMessageOut'));

Parameter List

  'packetid'
  'topic'
  'qos'
  'message'
  'retained'
  'duplicate'

Remarks

The MessageOut 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 MessageAck 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);
};