On Fri, May 15, 2020 at 8:05 PM Richard J Coppen <COPPEN@uk.ibm.com> wrote:
Hi Takatoshi,
I reviewed today with Andrew Banks and unfortunately I don't have a quick answer as this needs review with the wider Technical Committee. To help with that, I have raised two issues in Jira which you can track via the following links.
https://issues.oasis-open.org/browse/MQTT-565
https://issues.oasis-open.org/browse/MQTT-564
Thank you for making the effort to raise these, it's much appreciated.
Best regards
Richard
Richard Coppen CEng FBCS 
ÂIBM United Kingdom Senior Software Engineer ÂHursley Park IBM MQ ÂWinchester   ÂSO21 2JN Phone: +44 (0)1962 817164 ÂEngland e-mail: coppen@uk.ibm.com Â
From: Â Â Â ÂTakatoshi Kondo <redboltz@gmail.com>
To: Â Â Â Âmqtt-comment@lists.oasis-open.org, Richard J Coppen <COPPEN@uk.ibm.com>
Date: Â Â Â Â14/05/2020 02:42
Subject: Â Â Â Â[EXTERNAL] [mqtt-comment] Re: Which MQTT control packets can use if Request Problem Information is 0 ?
Sent by: Â Â Â Â<mqtt-comment@lists.oasis-open.org>
Hi Richard,
I'm not sure that you are right person to send follow up mail.
I reported the following issue but not responding, so far.
Could you check this?
Thanks,
Takatoshi
On Tue, Apr 14, 2020 at 11:36 AM Takatoshi Kondo <redboltz@gmail.com> wrote:
>
> Hi,
>
> I have a comment about the following part of MQTT Version 5.0 document:
>
> https://docs.oasis-open.org/mqtt/mqtt/v5.0/os/mqtt-v5.0-os.html#_Toc3901053
>
> > If the value of Request Problem Information is 0, the Server MAY return a Reason String or User Properties on a CONNACK or DISCONNECT packet, but MUST NOT send a Reason String or User Properties on any packet other than PUBLISH, CONNACK, or DISCONNECT [MQTT-3.1.2-29]. If the value is 0 and the Client receives a Reason String or User Properties in a packet other than PUBLISH, CONNACK, or DISCONNECT, it uses a DISCONNECT packet with Reason Code 0x82 (Protocol Error) as described in section 4.13 Handling errors.
>
>
> At first, the spec refer to CONNACK and DISCONNECT. But from the
> middle, PUBLISH is mixed.
>
> Which MQTT control packets can use Reason String and/or User
> Properties if Request Problem Information is 0 ?
>
> Thanks,
> Takatoshi
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