[OASIS Issue Tracker] (MQTT-573) Subscription Options

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OASIS Issues Tracker <>
Date
2020-10-26T19:36:18+00:00
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Thread
[OASIS Issue Tracker] (MQTT-573) Subscription Options
Ian Craggs created MQTT-573:
-------------------------------

             Summary: Subscription Options
                 Key: MQTT-573
                 URL: https://issues.oasis-open.org/browse/MQTT-573
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: Improvement
          Components: MQTT-SN
    Affects Versions: MQTT-SN-1.2
            Reporter: Ian Craggs


Subscription options were added to MQTT 5.0.  These are generally well received.  Similar capabilities should be added to MQTT-SN especially as they can result in more efficient operations.

Subscribe flags field:

2 bits - max QoS as now
1 bit - noLocal
1 bit - retain as published
2 bits - retain handling
2 bits - topic ID type

(I think DUP is not needed on subscribe - rely on suback).




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