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https://issues.apache.org/jira/browse/DISPATCH-1055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16528297#comment-16528297
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Chuck Rolke commented on DISPATCH-1055:
---------------------------------------
Please see [https://github.com/ChugR/qpid-dispatch/tree/DISPATCH-1055]
for a self test that demonstrates the issue.
> Flow credit not propagated over link route after drain cycle
> ------------------------------------------------------------
>
> Key: DISPATCH-1055
> URL: https://issues.apache.org/jira/browse/DISPATCH-1055
> Project: Qpid Dispatch
> Issue Type: Bug
> Components: Router Node
> Affects Versions: 1.1.0
> Reporter: Chuck Rolke
> Priority: Major
> Attachments: D-2004-direct.html, D-2004-routed.html
>
>
> A transaction test based on activemq-artemis TransactionTest reveals a credit
> propagation bug. The original case and reproducer code is at
> [https://issues.jboss.org/browse/ENTMQIC-2004]
>
> Attached are two traces of the test running direct and routed. I think this
> is a router bug.
> * In the direct case (D-2004-direct.html) look at Frames 101-103. Frame 101
> starts a drain cycle and Frame 102 complete the drain cycle. The the client
> in Frame 103 immediately sends the receiver 1000 more credits.
> * In the routed case (D-2004-routed.html) the same sequence is Frames 90-94.
> Frame 90 (client->router) and Frame 91 (router->broker) start the drain
> cycle. Frame 92 (broker->router) and Frame 93 (router->client) complete the
> drain cycle. Then in Frame 94 the client sends 1000 more credits but the
> router never sends the credits to the broker. That is the bug.
> After Frame 94, where the router does not send any receiver credits to the
> broker, the broker is unable to send any received messages to the receiver
> and everything freezes until the test times out.
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