[OASIS Issue Tracker] (MQTT-563) Client Id format

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

    [ https://issues.oasis-open.org/browse/MQTT-563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=77563#comment-77563 ] 

Allan Stockdill-Mander commented on MQTT-563:
---------------------------------------------

Rewrite to remove the references to length and write such that US-ASCII is a minimum supported set.

> Client Id format 
> -----------------
>
>                 Key: MQTT-563
>                 URL: https://issues.oasis-open.org/browse/MQTT-563
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Task
>          Components: MQTT-SN
>            Reporter: Simon Johnson
>            Assignee: Allan Stockdill-Mander
>            Priority: Major
>
> It was discussed that aligning the clientId format (23 UTF-8 bytes) to MQTT 5.0 was potentially dangerous in SN given the complexity of validation etc. However given ASCII is a subset of UTF-8 it is upon the broker & client implementation to enforce a more restrictive set if required. A note in implementation is required for this item.



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