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https://issues.apache.org/jira/browse/QPID-2153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12789423#action_12789423
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Gordon Sim commented on QPID-2153:
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Fixed by r828108
> channel collision renders pre-existing session unusable on client
> -----------------------------------------------------------------
>
> Key: QPID-2153
> URL: https://issues.apache.org/jira/browse/QPID-2153
> Project: Qpid
> Issue Type: Bug
> Components: C++ Client
> Affects Versions: 0.5
> Reporter: Gordon Sim
> Assignee: Gordon Sim
> Fix For: 0.6
>
>
> There are 2^16 channels available on each connection. Each session in use
> requires one of these channels to be assigned. If more than 2^16 sessions are
> created and deleted, the channel allocated to new sessions 'wraps around' and
> can result in a collision with that allocated to a pre-existing session
> resulting in a session-busy exception. This exception renders the pre-existing
> session unusable on the client side (though the broker still assumes it is
> attached).
> Though there is a check for in-use sessions, the channel is set on the new
> session regardless of that check and when that session is then destroyed (as
> it will be if the exception is thrown) it will request the session on that
> channel to be erase (on the invalid assumption that it refers to itself).
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