[OASIS Issue Tracker] (MQTT-249) Add expiry capabilities to MQTT.

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

    [ https://issues.oasis-open.org/browse/MQTT-249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=62228#comment-62228 ] 

Andrew Banks commented on MQTT-249:
-----------------------------------

See https://www.oasis-open.org/apps/org/workgroup/mqtt/download.php/57432/Oasis%20Jan%202016.pdf

> Add expiry capabilities to MQTT.
> --------------------------------
>
>                 Key: MQTT-249
>                 URL: https://issues.oasis-open.org/browse/MQTT-249
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Improvement
>          Components: futures
>    Affects Versions: 3.1.1
>            Reporter: Andrew Banks
>
> MQTT has the ability to purge all of the session state on demand by using the clean session flag. This proposal is for a time based and more granular capability to clear up state.  
> Add capabilities to MQTT to allow for expiry of.
> 1) Messages.
> 2) Subscriptions.
> 3) All session state, for example if the client is disconnected for a time period then treat it as if it had connected with clean session true.  This is sometimes referred to as offline keep alive.



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