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https://issues.apache.org/jira/browse/DISPATCH-630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15853944#comment-15853944
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Robbie Gemmell commented on DISPATCH-630:
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{quote} So, I'm happy to add some sort of property/capability that the server
sends back to say that it strictly enforces 1., 2. and 3. in all instances, and
that this is the desired behaviour. The client then has more information than
it does currently about what the server can (and can't) enforce.{quote}Sounds
reasonable to me.
> Detecting connections with the same container-id
> ------------------------------------------------
>
> Key: DISPATCH-630
> URL: https://issues.apache.org/jira/browse/DISPATCH-630
> Project: Qpid Dispatch
> Issue Type: Improvement
> Reporter: Paolo Patierno
> Priority: Minor
>
> Using the router in the EnMasse project and looking into the MQTT
> specification we have the following problem on the current EnMasse
> implemetation.
> The MQTT specification says the following ...
> Let's imagine that a client is connected to the broker with client id "1234"
> and that another client tries to connect with same client id. The broker will
> shut down the connection with first client opening the new one.
> Now with our MQTT support, the MQTT gateway can run as multiple instances
> (multiple pods) so this check can't be executed by the gateway locally
> because a client "1234" could connect to MQTT GW-1 and another client (always
> "1234") could connect to the MQTT GW-2 and the gateways don't know about each
> other. The common point they have is the router network inside EnMasse and
> the fact that for each MQTT client a new AMQP connection is created on the
> other side attaching a link with this name : $mqtt.to.<client-id>
> The following idea came ...
> If during the connection we use a container-id that is equals to the
> client-id, could the router have a feature for detecting connections with
> same container-id and providing a way to close the previous ones ?
> It should be an information shared (and cached ?) by routers in their
> inter-router protocol.
> If not at connection level, maybe at link attachment level ? (when two
> clients attach to the same $mqtt.to.<client-id> link)
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