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


     [ https://issues.oasis-open.org/browse/MQTT-544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Simon Johnson updated MQTT-544:
-------------------------------
    Proposal: 
Section should read;

*5.4.18 UNSUBACK*

||Length||MsgType||MsgId||ReturnCode||
|(octet 0)|(1)|(2-3)|(4)

Table 21: UNSUBACK Message
An UNSUBACK message is sent by a GW to acknowledge the receipt and processing of an UNSUBSCRIBE message. Its format is illustrated in Table 21:
* Length and MsgType: see Section 5.2.
* MsgId: same value as the one contained in the corresponding UNSUBSCRIBE message.
* ReturnCode: âacceptedâ, or rejection reason. See section 5.3.10.

  was:
Section should read;

*5.4.18 UNSUBACK*

||Length||MsgType||MsgId||ReturnCode||
|(octet 0)|(1)|(2-3)|(4)

Table 21: UNSUBACK Message
An UNSUBACK message is sent by a GW to acknowledge the receipt and processing of an UNSUBSCRIBE message. Its format is illustrated in Table 21:
â Length and MsgType: see Section 5.2.
â MsgId: same value as the one contained in the corresponding UNSUBSCRIBE message.
â ReturnCode: "accepted", or rejection reason


> 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
>            Assignee: Simon Johnson
>            Priority: Major
>
> 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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