Client sends PubComp after disconnect.

migrated from Bugzilla [#468334](https://bugs.eclipse.org/bugs/show_bug.cgi?id=468334)
status UNCONFIRMED severity _normal_ in component _MQTT-Java_ for _1.2_
Reported in version _1.0_ on platform _PC_
Assigned to: Ian Craggs

On 2015-05-26 10:34:38 -0400, Andrew Banks wrote:

> A client application executes:
>
> Connect,
> Subscribe,
> Publish Qos=2,
> Receives the published message.
> Disconnect.
>
> The server returns the publication without waiting for the client PubRel, as it is allowed to do.
>
> Occasionally the client sends PubComp for the message it has received, after the final disconnect packet.
>
> Sequence of packets observed in the server.
>
> 3 Mon May 18 22:58:07 BST 2015 SEND_MQTT mqttMessageType:SUBACK
> 4 Mon May 18 22:58:07 BST 2015 RECEIVED_MQTT mqttMessageType:PUBLISH
> 5 Mon May 18 22:58:07 BST 2015 SEND_MQTT mqttMessageType:PUBREC
> 6 Mon May 18 22:58:07 BST 2015 SEND_MQTT mqttMessageType:PUBLISH
> 7 Mon May 18 22:58:07 BST 2015 RECEIVED_MQTT mqttMessageType:PUBREL
> 8 Mon May 18 22:58:07 BST 2015 SEND_MQTT mqttMessageType:PUBCOMP
> 9 Mon May 18 22:58:07 BST 2015 RECEIVED_MQTT mqttMessageType:PUBREC
> 0 Mon May 18 22:58:07 BST 2015 SEND_MQTT mqttMessageType:PUBREL
> 1 Mon May 18 22:58:07 BST 2015 RECEIVED_MQTT mqttMessageType:DISCONNECT
> 2 Mon May 18 22:58:07 BST 2015 RECEIVED_MQTT mqttMessageType:PUBCOMP
> 113 historyIndex=3(int)
>
> SEND_MQTT means sent by the server,
> RECEIVED_MQTT means received by the server.

On 2015-06-05 05:53:41 -0400, Ian Craggs wrote:

> Andy, is there a specific test program which exhibits this problem?

On 2015-06-08 05:26:11 -0400, Andrew Banks wrote:

> Ian, we've seen this from a number of tests, all of them run multiple clients in the same JVM. I've sent you some examples separately.