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https://issues.apache.org/jira/browse/PROTON-466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13832705#comment-13832705
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ASF subversion and git services commented on PROTON-466:
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Commit 1545697 from [~tedross] in branch 'proton/trunk'
[ https://svn.apache.org/r1545697 ]
PROTON-466 - driver fix.
> Driver - Optimization causes hangs in cleanly closed connections
> ----------------------------------------------------------------
>
> Key: PROTON-466
> URL: https://issues.apache.org/jira/browse/PROTON-466
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Affects Versions: 0.5
> Reporter: Ted Ross
> Assignee: Ted Ross
> Priority: Blocker
> Fix For: 0.6
>
> Attachments: PROTON-446.patch
>
>
> Related to https://issues.apache.org/jira/browse/QPID-4853
> Often, when a connection is cleanly closed, the connection-close handshake
> completes but the connector is never closed. All that is needed is for one
> more connector_process cycle, but the connector never again appears in the
> work list.
> There is an optimization in the connector processor that says "if the socket
> has accepted all of the current data for send, clear the SEL_WR flag". The
> problem is that when the data-for-send is the last data to be sent on the
> connection, the connector is never again processed and hangs, using resources
> and keeping the socket from fully closing.
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