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Subject: [OASIS Issue Tracker] (MQTT-563) Client Id format
[ https://issues.oasis-open.org/browse/MQTT-563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=82111#comment-82111 ] Davide Lenzarini commented on MQTT-563: --------------------------------------- MQTT 5 mandates a server to allow from 1 to 23 bytes for Client Identifier. In case of assigned client identifier we need to define a MAX size that is different from 65521 bytes as this is too much for constrained devices.  > 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 [X] > 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. -- This message was sent by Atlassian Jira (v8.3.3#803004)
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