[OASIS Issue Tracker] (MQTT-544) Add return code to UNSUBACK

Ian Craggs created MQTT-544:
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             Summary: Add return code to UNSUBACK
                 Key: MQTT-544
                 URL: https://issues.oasis-open.org/browse/MQTT-544
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: Improvement
          Components: MQTT-SN
    Affects Versions: MQTT-SN-1.2
            Reporter: Ian Craggs


The MQTT-SN SUBACK packet includes a return code. As in MQTT 3.1.1, the UNSUBACK packet does not. It would seem sensible to add a return code to every ack. I think the UNSUBACK is the only one without. This would mirror MQTT 5.0 too.



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