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https://issues.apache.org/jira/browse/QPID-8527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17348565#comment-17348565
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ASF subversion and git services commented on QPID-8527:
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Commit 21a866749828aa2354234e4c5d3d1cc8ef2b9a80 in qpid-cpp's branch
refs/heads/main from Clifford Jansen
[ https://gitbox.apache.org/repos/asf?p=qpid-cpp.git;h=21a8667 ]
QPID-8527: Fix hang in qpidd with TLS connections.
> Hang in qpidd failing to resume read activity on TLS connections.
> -----------------------------------------------------------------
>
> Key: QPID-8527
> URL: https://issues.apache.org/jira/browse/QPID-8527
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker
> Affects Versions: qpid-cpp-1.39.0
> Environment: Posix only.
> Reporter: Clifford Jansen
> Assignee: Clifford Jansen
> Priority: Major
>
> The Posix AsynchIO implementation imposes a timeslice on read and write
> activity to promote resource fairness between AMQP connections.
> This mechanism relies on the poller to reschedule the suspended read activity
> which it does when it sees unread bytes on the socket. This works for normal
> TCP sockets. It can fail for TLS connections if the TLS layer (libnss) has
> buffered bytes that are "hidden" from the poller.
> The write side doesn't get starved or fail to notice when a socket is
> unblocked for writing in the TLS case.
> Posix only. The Windows implementation relies on the read and write
> completions being fairly evenly distributed between connections.
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