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From "Cliff Jansen (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-3759) Heartbeat timeout in Windows does not lead to timely reconnect
Date Thu, 22 Mar 2012 17:10:26 GMT

    [ https://issues.apache.org/jira/browse/QPID-3759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13235731#comment-13235731
] 

Cliff Jansen commented on QPID-3759:
------------------------------------

I chose CancelIoEx because it worked most naturally with the existing code.  The XP-friendly
CancelIo can probably be substituted with minor modification.  I will get a new patch fro
review asap.


                
> Heartbeat timeout in Windows does not lead to timely reconnect
> --------------------------------------------------------------
>
>                 Key: QPID-3759
>                 URL: https://issues.apache.org/jira/browse/QPID-3759
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Client
>    Affects Versions: 0.14
>         Environment: Windows C++ messaging
>            Reporter: Chuck Rolke
>            Assignee: Cliff Jansen
>             Fix For: 0.17
>
>         Attachments: main.cpp
>
>
> Reported by Wolf Wolfswinkel on Qpid users http://qpid.2158936.n2.nabble.com/Heartbeats-in-C-broker-on-Windows-td7118702.html
22-Dec-2011
> The simplest test case is in attached main.cpp. Establish a good network connection to
the broker and then start the program. It creates a connection, sends two messages, and then
pauses for 15 seconds. During the pause disconnect the network connection to the broker for
at least two heartbeat timeouts (12 seconds).
> After the heartbeat timeout the timer task fires and a debug trace shows:
>  Traffic timeout,  TCPConnector::abort, TCPConnector::eof, TCPConnector::close
> But the connection is not actually closed until something happens on the network to wake
up the thread waiting in Poller::run().
> The timer event appears unable to interrupt the IO thread waiting for the completion
port.

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