mqtt message

Subject: [OASIS Issue Tracker] (MQTT-539) TopicId in PUBACK is superfluous

From: OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>
To: mqtt@lists.oasis-open.org
Date: Mon, 27 Apr 2020 13:42:00 +0000 (UTC)

     [ https://issues.oasis-open.org/browse/MQTT-539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ian Craggs updated MQTT-539:
----------------------------
    Component/s: MQTT-SN

> TopicId in PUBACK is superfluous
> --------------------------------
>
>                 Key: MQTT-539
>                 URL: https://issues.oasis-open.org/browse/MQTT-539
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Improvement
>          Components: MQTT-SN
>    Affects Versions: mqtt-sn-1.2
>            Reporter: Ian Craggs
>            Priority: Major
>
> Via Tomoaki Yamaguchi.Â "The topicId in the PUBACK packet makes the gateway implementation complicated.Â The msgId in PUBACK is enough for the client to handle the response."
> This also makes the PUBACK different to the PUBREC, PUBREL and PUBCOMP.Â Perhaps this was for the purpose of reporting errors as these three acks also lack a return code field (which will be dealt with in another issue).



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