[OASIS Issue Tracker] (MQTT-521) Add user properties to SUSBSCRIBE

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

Ken Borgendale created MQTT-521:
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             Summary: Add user properties to SUSBSCRIBE
                 Key: MQTT-521
                 URL: https://issues.oasis-open.org/browse/MQTT-521
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: New Feature
          Components: core
    Affects Versions: 5, CSD01
            Reporter: Ken Borgendale


Erik Paulson - mqtt-comment

In looking through the 5.0 MQTT draft, is it possible to put any user properties on a subscribe request? The use case I was thinking would be for in broker implementations if you wanted to pass some additional data along to give hints to the broker, e.g. for something like Kafka "start my subscription at point X". 

It could also be useful to carry along additional authorization metadata, instead of only being able to use whatever authentication was established at connection-time for authorization. It might be nice to slip in a bearer token to a subscription request and use that for a specific topic. 



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