[OASIS Issue Tracker] (MQTT-494) Unsubscribe actions does not define shared sub actions

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     [ https://issues.oasis-open.org/browse/MQTT-494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ken Borgendale updated MQTT-494:
--------------------------------

    Fix Version/s: wd16
         Priority: Minor  (was: Major)
      Component/s: edits
                       (was: core)

Discussed at the 2017-09-21 TC.  The TC decided not to add the return code, but to make the editorial changes.  Therefore move the component to edits.

> Unsubscribe actions does not define shared sub actions
> ------------------------------------------------------
>
>                 Key: MQTT-494
>                 URL: https://issues.oasis-open.org/browse/MQTT-494
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Bug
>          Components: edits
>    Affects Versions: 5, CSD01
>            Reporter: Ken Borgendale
>            Assignee: Ken Borgendale
>            Priority: Minor
>             Fix For: 5, wd16
>
>
> Section 3.10.4 (UNSUBSCRIBE Actions) does not define the actions to take when the subscription is a shared sub.
> At the very least this needs a reference to section 4.8.2 (Shared Subscriptions) but should have some text here.
> The 0x00 (Success) return code for UNSUBACK needs to be clarified.  Saying the subscription is deleted is at best ambiguous in the case of a shared subscription.
> There should be another return code to indicate whether the subscription still exists given that this session is no longer attached to the shared subscription.  That is, was this the last session attached to the shared sub.



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