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pythonmqttpaho

Paho MQTT client: how to ignore messages published by myself?

My Paho MQTT client does the following:

  1. Subscribe to mytopic/#
  2. Do something
  3. Publish to mytopic/#

Problem:
The published message in step 3 arrives at step 1. I'd like to avoid adding a sender-attribute to the payload.

Is there a proper way of ignoring self-published messages? Something like the following (pseudocode):

def on_message(self, client, userdata, message):
    if client.id == message.sender_client_id:  # Is there anything like the sender_client_id?
        return

Any idea? Thanks!

Solution

  • As of the MQTT v5 spec you can tell the broker not to send your own messages back to you as part of the subscription message.

    This removes the need to add the identifier so you can then choose to ignore it.

    This does of course rely on both the broker and the MQTT client supporting MQTT v5