Paddy created AMQ-5185:
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Summary: Duplicate messages occur for MQTT cleanSession=false
client with network of brokers
Key: AMQ-5185
URL: https://issues.apache.org/jira/browse/AMQ-5185
Project: ActiveMQ
Issue Type: Bug
Components: MQTT
Affects Versions: 5.9.1
Environment: Linux. Python client using MQTT Paho library version 0.9
Reporter: Paddy
Duplicates delivery of messages occur when connecting to a network of brokers
with an MQTT client with cleansession=false.
Steps to reproduce test:
1. Form network of brokers A and B
2. Connect "client1" with cleansession=false to broker A and subscribe to topic
"paho/test". Make sure client_id is set to "client1".
3. Disconnect client1
4. Connect "client2" to broker A and publish single message "hello" to topic
"paho/test".
5. Connect "client1" to broker A and subscribe to "paho/test". Message "hello"
would be received.
6. Disconnect "client1"
7. Connect "client1" to broker B and subscribe to "paho/test". Message "hello"
would be received (again).
Behavior is the same for publishing with qos=0,1,2.
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