[OASIS Issue Tracker] Created: (MQTT-106) Behaviour when Will Flag = 0

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

Behaviour when Will Flag = 0
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                 Key: MQTT-106
                 URL: http://tools.oasis-open.org/issues/browse/MQTT-106
             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
          Issue Type: Improvement
          Components: core
            Reporter: Peter Niblett
            Priority: Minor


In 3.1.2.3.2. there's a normative statement "
The Will Flag indicates that a Will Message MUST be published by the server when the server detects that the client is disconnected for any reason other than the client flowing a DISCONNECT Packet [MQTT-3.1.2-7]"

1. Editorial comment - This should say "If the Will Flag is set to 1, a Will Message MUST be published by the server when the server detects that the client is disconnected for any reason other than the client flowing a DISCONNECT Packet [MQTT-3.1.2-7]"

2. Core comment. For the avoidance of doubt, we should say what happens if the Will Flag is 0

I assume that the default is that no will message gets published, but if a server wants to use a $SYS topic to log unexpected disconnects, then it is free to do that, We should consider making it clear that a server does not "remember" the last Will Mesage / Topic that the client used. 

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