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iitsoftware / swiftmq-ce

SwiftMQ Community Edition
Apache License 2.0
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Bug? Empty MQTT QoS 1 messages #77

Closed StenGruener closed 3 years ago

StenGruener commented 3 years ago

Dear team,

I test swiftmq-ce (from docker hub) with publishers and subscribers based on pyhton eclipse paho. I observe that some of the messages received by subscribers are arriving empty (\x00 bytes). For me it looks randomly, happens probably every 500th message, depending on rate/load.

Any idea?

iitsoftware commented 3 years ago

If you replace this config in the sys$trace section of your data/config/routerconfig.xml and re-run your test, you'll find all traces under data/trace/mqtt.trace:

      <space name="kernel" enabled="true">
        <predicates>
          <predicate name="22" filename="../data/trace/mqtt.trace" value="sys$mqtt"/>
        </predicates>
      </space>

Please have a look and let me know if you find something.