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https://issues.apache.org/jira/browse/ARTEMIS-1244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Taylor reassigned ARTEMIS-1244:
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Assignee: Andy Taylor
> [mqtt] Retain flag of received message is lost (caught by outgoing
> interceptor)
> -------------------------------------------------------------------------------
>
> Key: ARTEMIS-1244
> URL: https://issues.apache.org/jira/browse/ARTEMIS-1244
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: MQTT
> Affects Versions: 2.1.0
> Reporter: Michal Toth
> Assignee: Andy Taylor
> Priority: Minor
>
> Upstream test: testCheckInterceptedMQTTMessageProperties]
> [https://github.com/michalxo/activemq-artemis/commit/119e90c6c5bd2ae523e01368544ae3cb66987c4a#diff-d2a66663368a8238bae6dc85ccbd5a5d|org/apache/activemq/artemis/tests/integration/interceptors/MQTTInterceptorPropertiesTest.java
> Asked for PR.
> While implementing an upstream test and checking MQTT Outgoing interceptor, I
> have noticed that retain flag set to true is being lost when sending message
> out.
> However I did not manage to get information about this specific in [3.3.1.3.
> Retain|http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc398718038].
> On the other hand I have found a sentence in
> [HiveMQ|http://www.hivemq.com/blog/mqtt-essentials-part-8-retained-messages]
> part 8 article:
> {quote}
> Also the subscribing client can identify if a received message was a retained
> message or not, because the broker sends out retained messages with the
> retained flag still set to true.
> {quote}
> So after all this might be a matter of implementation. (feature enhancement
> or rejected bug)
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