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Subject: [OASIS Issue Tracker] Commented: (MQTT-42) Clean session and random client ids
[ http://tools.oasis-open.org/issues/browse/MQTT-42?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=34096#action_34096 ] Allan Stockdill-Mander commented on MQTT-42: --------------------------------------------- I'd been thinking about this problem/situation and how instead it might solved on the server side. For example a client connecting with clean session false and a 0 length clientId would be saying; "I don't care about my state I just want to connect and send/receive data", in this case the server can handle either assigning it internally a guaranteed unique clientId or managing it in some other way, but the client implementation doesn't need to know/care about the details or attempt to generate a clientId it hopes will be unique. This is probably a change beyond the scope of the charter, but as it's related to the above I figure it's worth mentioning here. > Clean session and random client ids > ----------------------------------- > > Key: MQTT-42 > URL: http://tools.oasis-open.org/issues/browse/MQTT-42 > Project: OASIS Message Queuing Telemetry Transport (MQTT) TC > Issue Type: Improvement > Components: core > Affects Versions: 3.1.1 > Environment: N/A > Reporter: Raphael Cohen > Priority: Minor > Fix For: 3.1.1 > > > Opened on behalf of Roger Light:- > Hi, > A lot of MQTT client libraries offer the feature of generating random > client ids rather than having to supply one. This is good. > I recently had over 10,000 client connections made to > test.mosquitto.org using a random client id, but also having set clean > session to false, which meant that when they disconnected their > information was stored on the server but there was basically no chance > they could reconnect. > It would be nice to have a comment in the spec suggesting that > implementations may offer to generate random client ids but that they > must refuse to do so if clean session is set to false. > Cheers, > Roger -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://tools.oasis-open.org/issues/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
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