[GitHub] [rocketmq-externals] niceinfuture opened a new issue #850: [rocketmq-iot-bridge]MQTT broker quality level qos1 ( (at least one) between the publisher client and mqtt broker

[GitBox <gi...@apache.org>]

niceinfuture opened a new issue #850:
URL: https://github.com/apache/rocketmq-externals/issues/850


   - The iot-bridge broker is implemented based on rocketmq, it is necessary to ensure the qos1 between the publisher client and rocektmq, between rocektmq and subscriber client.
   - This issue is resolved the publisher client and mqtt broker.
   
   1. Please describe the issue you observed:
   - MQTT broker receive publisher client's message and send it to rocketMQ, it will not send the suback protocol message to the publisher until it succeeds.
   - When MQTT broker send rocketMQ messages failed, Broker will periodically retry sending failed messages, can't more than the maximum retry of times (configurable)
   - qos1 has the possibility of message duplication.
   
   ![image](https://user-images.githubusercontent.com/34838783/141742916-8113f7be-6b27-4a71-acc1-4e520a49775e.png)
   
   
   2. Please tell us about your environment:
   Linux
   


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