Robbie Gemmell created PROTON-853:
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Summary: [proton-j] the transport emitted a new link attach for a
link in the process of being detached
Key: PROTON-853
URL: https://issues.apache.org/jira/browse/PROTON-853
Project: Qpid Proton
Issue Type: Bug
Components: proton-j
Affects Versions: 0.9
Reporter: Robbie Gemmell
When upgrading to use 0.9 for the JMS client, we see some NPEs on the client as
it tries processing the events being emitted by the connection. This was due to
multiple link attach and detach frames arriving in the for the same consumer
link.
What appears to be happening is that while closing the consumer, after the
client emits its detach frame proton then emits a new attach frame for the
link, before the server responds to the original detach, even though the client
made no attempt to recreate the consumer. It looks like the clients handling of
a flow frame which arrived after it emitted the original detach meant that the
link was modified, and the transport reacted by sending out a new attach. This
appears to be due to a change made in 0.9 for PROTON-154.
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