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From "Gordon Sim (JIRA)" <qpid-...@incubator.apache.org>
Subject [jira] Resolved: (QPID-1785) Race condition in closing session due to exception
Date Wed, 08 Apr 2009 10:10:12 GMT

     [ https://issues.apache.org/jira/browse/QPID-1785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gordon Sim resolved QPID-1785.
------------------------------

    Resolution: Fixed

Fixed as r762312 on 0.5 branch and as r763163 on trunk.

QPID-1789 tracks the logically incorrect design whereby a session going out of scope is treated
as detached by client but server is not informed.

> Race condition in closing session due to exception
> --------------------------------------------------
>
>                 Key: QPID-1785
>                 URL: https://issues.apache.org/jira/browse/QPID-1785
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Client
>    Affects Versions: M4
>            Reporter: Gordon Sim
>            Assignee: Gordon Sim
>
> If a Session object goes out of scope, the ConnectionImpl will throw a
> FramingErrorException for any frames received on the correspodning channel. 
> This is in itself incorrect as the broker may not have ever been sent a detach.
> However it only causes a real problem when a session is closed due to an
> exception. In this case the client receives an execution.exception command
> followed by a session.detach control. If the session goes out of scope between
> the processing of these two, the handling of the detach causes a
> FramingErrorException which causes the client to close the connection thus
> destroying all other active sessions.  

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