[OASIS Issue Tracker] (MQTT-466) Add reason code 150 to PUBREC packet

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

    [ https://issues.oasis-open.org/browse/MQTT-466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=67692#comment-67692 ] 

Konstantin Dotchkoff commented on MQTT-466:
-------------------------------------------

In the TC meeting on September 28th the TC decided:
- DISCONNECT can be used with the appropriate error code.
- for QoS > 1 the receiver may decide to delay PUBACKs to throttle down the send rate if appropriate.

The TC decided to close this issue with no need for changes to the spec.

> Add reason code 150 to PUBREC packet
> ------------------------------------
>
>                 Key: MQTT-466
>                 URL: https://issues.oasis-open.org/browse/MQTT-466
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 5, CSD01
>            Reporter: Konstantin Dotchkoff
>             Fix For: 5
>
>
> Line 2169: Table 3-6 - PUBREC Reason Codes:
> add code value 150 (0x96) "Message rate too high" to the table. 
> Line 881: Table 2-4 Reason Codes 
> add PUBREC in the Packets column for Value 150 (0x96) "Message rate too high" 
> This code is different than return code 151 and needed for PUBACK, to inform the Sender that it has temporarily exceeded the throughput limit (vs. the cumulative (daily/monthly) quota for a customer, represented by value 151). 
> Example: Sender can wait for a period of time and then continue sending messages, instead of forcing it to disconnect and perform a resource intense reconnect.
> This issue was originally reported in MQTT-417, which doesn't seem to be applied in WD14.



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