[OASIS Issue Tracker] (MQTT-504) No way to tell when a retained message was set

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

Ian Craggs created MQTT-504:
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             Summary: No way to tell when a retained message was set 
                 Key: MQTT-504
                 URL: https://issues.oasis-open.org/browse/MQTT-504
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: New Feature
          Components: core
    Affects Versions: 5, CSD01
            Reporter: Ian Craggs
            Priority: Minor


I implemented this feature in a broker specific way myself some years back, so I know it's useful.  It was raised on Twitter to me here: https://twitter.com/MichMich/status/903283262415568898

Maybe expiry would be enough for some use cases.

We could allow the server to set a property with the received timestamp on the retained message.



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