[OASIS Issue Tracker] (MQTT-368) Consistency: Session Expiry [Interval]

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    [ https://issues.oasis-open.org/browse/MQTT-368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=64813#comment-64813 ] 

Ed Briggs commented on MQTT-368:
--------------------------------

Closer examination reveals some subtleties that need to be clarified. Expiry is used to mean several different things:
- The end of a session, whether due to a time out or other causes
- The mechanism of ending a session (The Client can avoid implementing its own session expiry.. (3.1.2.12)
- A message indicating a session has ended ('The Will Message is effectively a Session Expiry message.. (3.1.2.5)
- The name of a property (If the Session Expiry Interval is not present)
- The value of the property (Session Expiry Interval is greater than..)
- A period of time (Session Expiry interval) (lower case i)

For some readers, there is also a 'usage' problem  (BrE = expiry,  AmE = expiration).




> Consistency: Session Expiry [Interval]
> --------------------------------------
>
>                 Key: MQTT-368
>                 URL: https://issues.oasis-open.org/browse/MQTT-368
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Bug
>          Components: edits
>    Affects Versions: 5, wd10
>            Reporter: Brian Raymor
>            Assignee: Ed Briggs
>            Priority: Trivial
>             Fix For: 5, wd10
>
>
> There are multiple variations:
> * Session Expiry Interval
> * Session Expiry interval
> * Session Expiry
> For example (not a complete list):
> 880 Interval is set to be longer than the Session Expiry ...
> 953 ... the Session Expiry interval has
> 965 ... before the Session Expiry interval has passed,
> 1298 If the Server accepts a connection with Session Expiry set to 0 ...
> 1301 If the Server accepts a connection with non zero Session Expiry



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