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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:all-tabpanel ] Ian Craggs updated MQTT-563: ---------------------------- Proposal: Client Identifier (ClientID) The Client Identifier (ClientID) identifies the Client to the Server. Each Client connecting to the Server has a unique ClientID. The ClientID MUST be used by Clients and by Servers to identify state that they hold relating to this MQTT-SN Session between the Client and the Server. The ClientID MUST be a String containing only characters defined as "Graphic Characters" in Section 4.3 of ANSI X3.4-1986 (US-ASCII) The Server MUST allow ClientIDâs which are between 1 and 23 bytes in length. A Client Identifier of 0 bytes indicates that the Client is requesting the Server generate and assign a Client Identifier was: Client Identifier (ClientID) The Client Identifier (ClientID) identifies the Client to the Server. Each Client connecting to the Server has a unique ClientID. The ClientID MUST be used by Clients and by Servers to identify state that they hold relating to this MQTT-SN Session between the Client and the Server. The ClientID MUST be a String containing only characters defined as "Graphic Characters" in Section 4.3 of ANSI X3.4-1986 (US-ASCII) The Server MUST allow ClientIDâs which are between 1 and 32 bytes in length. A Client Identifier of 0 bytes indicates that the Client is requesting the Server generate and assign a Client Identifier > 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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