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Posted to issues@camel.apache.org by "Roland Beisel (Jira)" <ji...@apache.org> on 2019/11/13 11:23:00 UTC

[jira] [Created] (CAMEL-14173) Durable subscriptions broken on client restart

Roland Beisel created CAMEL-14173:
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             Summary: Durable subscriptions broken on client restart
                 Key: CAMEL-14173
                 URL: https://issues.apache.org/jira/browse/CAMEL-14173
             Project: Camel
          Issue Type: Bug
          Components: camel-paho
    Affects Versions: 3.x
            Reporter: Roland Beisel


If a client connects to MQTT broker with cleanSession=false, the broker creates a durable subscription for the client. If the application/camel-paho is shutdown (e.g. application deployment) the client is being unsubscribed from the topic (doStop() method in PahoConsumer.java). All messages that are sent in the meantime (while the client is offline) are lost for the client (irrespective of QOS level) because of unsubscription.

Expected behaviour: Camel / Paho Route Shutdown should not unsubscribe durable subscribers (QOS > 1) from topics.



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