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https://issues.apache.org/jira/browse/AMQ-5397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14173791#comment-14173791
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Timothy Bish commented on AMQ-5397:
-----------------------------------
You might want to try out the 5.11-SNAPSHOT builds and see if the problem is
still there. If so it would be great if you could create a test case for this,
possibly add one to MQTTAuthTest.java in the activemq-mqtt project.
> Using authorization plugin with MQTT causes ClassCastException on client
> reconnect.
> ------------------------------------------------------------------------------------
>
> Key: AMQ-5397
> URL: https://issues.apache.org/jira/browse/AMQ-5397
> Project: ActiveMQ
> Issue Type: Bug
> Components: Connector, MQTT
> Affects Versions: 5.10.0
> Reporter: Christian Tytgat
> Priority: Critical
>
> We have the following setup:
> MQTT client (reproducible with at least mosquitto and fusesource) with
> cleanSession = false and QOS = 1 (important!)
> AMQ with authentication/authorization plugin
> {noformat}
> <plugins>
> <statisticsBrokerPlugin/>
> <simpleAuthenticationPlugin>
> <users>
> <authenticationUser username="${activemq.username}"
> password="${activemq.password}" groups="admins,everyone"/>
> <authenticationUser username="mcollective" password="secret"
> groups="mcollective,admins,everyone"/>
> </users>
> </simpleAuthenticationPlugin>
> <authorizationPlugin>
> <map>
> <authorizationMap>
> <authorizationEntries>
> <authorizationEntry queue=">" write="admins" read="admins"
> admin="admins" />
> <authorizationEntry topic=">" write="admins" read="admins"
> admin="admins" />
> <authorizationEntry topic="mcollective.>"
> write="mcollective" read="mcollective" admin="mcollective" />
> <authorizationEntry queue="mcollective.>"
> write="mcollective" read="mcollective" admin="mcollective" />
> <authorizationEntry topic="ActiveMQ.Advisory.>"
> read="everyone" write="everyone" admin="everyone"/>
> </authorizationEntries>
> </authorizationMap>
> </map>
> </authorizationPlugin>
> </plugins>
> {noformat}
> No problem to connect for the first time, but when reconnecting with the same
> client ID, the connection fails each time:
> {noformat}
> 2014-10-16 11:20:41,120 [MQ NIO Worker 3] WARN Transport - Transport
> Connection to: tcp://10.0.2.2:49479 failed:
> org.apache.activemq.transport.mqtt.MQTTProtocolException: Error recovering
> retained messages for m2mbox.macbookx.schedule:
> org.apache.activemq.security.AuthorizationDestinationFilter cannot be cast to
> org.apache.activemq.broker.region.Topic
> {noformat}
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