[OASIS Issue Tracker] (MQTT-297) Packet Indentifier Leak on lost Subscription commands

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

Ed Briggs created MQTT-297:
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             Summary: Packet Indentifier Leak on lost Subscription commands
                 Key: MQTT-297
                 URL: https://issues.oasis-open.org/browse/MQTT-297
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: Bug
    Affects Versions: 3.1.1
            Reporter: Ed Briggs
            Priority: Minor


If a SUBSCRIBE, SUBACK, UNSUBSCRIBE or UNSUBACK message is lost during transfer, the packet identifier is leaked.   The leak remains for the duration of the session, which in the case of CleanSession=0 could be indefinite, during which time additional loss of packet ids could occur.

This cannot be fixed using the existing mechanisms, and is recorded here for future consideration (not MQTT 3.1.1. or MQTT 5.0). 



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