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Subject: Re: [mqtt-comment] Some Comments

Hi Ian,

Many thanks for your comments and feedback on CSD1.
The MQTT TC have addressed these issues as part of JIRA issue MQTT-130 > https://tools.oasis-open.org/issues/browse/MQTT-130 <

Best regards


From:        Ian Craggs <icraggs@modelbasedtesting.co.uk>
To:        mqtt-comment@lists.oasis-open.org,
Date:        14/01/2014 15:00
Subject:        [mqtt-comment] Some Comments
Sent by:        <mqtt-comment@lists.oasis-open.org>

1.  If a requested QoS is 3 in subscribe, it is not clear whether this
is a malformed packet which should cause the session to be terminated,
or whether a suback should be returned with invalid request or lower
granted QoS.  (I think the first case is intended.)

2. When receiving a publish with the retained flag set and a payload of
0 length, it is clear that any existing retained message should be
removed.  But what if there is no existing retained message?  In that
case it is not clear if we set a retained message of 0 length, or not.
(I expect not).

3. # wildcards used to be allowed at the beginning of topic filters as
well as at the end.  Is this a deliberate restriction?


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