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Subject: [OASIS Issue Tracker] (MQTT-427) Message ordering for shared subscriptions


Jonathan Levell created MQTT-427:
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             Summary: Message ordering for shared subscriptions
                 Key: MQTT-427
                 URL: https://issues.oasis-open.org/browse/MQTT-427
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: Bug
    Affects Versions: 5
            Reporter: Jonathan Levell


At the moment, the spec makes no exception for ordering for shared subscriptions. I think the TC has agreed that the ordering requirements do not apply to shared subscriptions but that is not reflected in WD11 as far as I can see.

(For one example of non-ordering, consider a shared subscription with two clients receiving messages as QoS=1. Client A receives message 1 (but does not ack it). Client B receives messages 2 & 3 and acks them. Client A's session then expires. I think we want servers to be able to deliver message 1 to Client B).



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