[OASIS Issue Tracker] (MQTT-411) Return code for Payload does not match Payload Format

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

    [ https://issues.oasis-open.org/browse/MQTT-411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=65011#comment-65011 ] 

Andrew Banks commented on MQTT-411:
-----------------------------------

I agree there should be a specific disconnect return code for this,  we should however treat it as a protocol error.
The sender implementation has some form of error in it, the debate for me, is how hard the receiver tries to check for the senders error. 

> Return code for Payload does not match Payload Format
> -----------------------------------------------------
>
>                 Key: MQTT-411
>                 URL: https://issues.oasis-open.org/browse/MQTT-411
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Bug
>    Affects Versions: 5, wd11
>            Reporter: Ken Borgendale
>            Assignee: Ken Borgendale
>            Priority: Minor
>             Fix For: 5, wd11
>
>
> In section 3.3.2.4 Payload Format Indicator we say the receiver MAY validate the Payload is of the specified format.  However we do not define a Return Code for this.  Also in this case it would make sense in the case of a QoS>0 message send send a NAK rather than closing the connection.



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