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https://issues.apache.org/jira/browse/TS-1007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14625025#comment-14625025
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Susan Hinrichs commented on TS-1007:
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I've made a fix so that the transaction close occurs before the session close.
We moved the ua_session->do_io_close into the HttpSM::kill_this().
We still get nested sessions for the SPDY and H2 cases. I'll file another bug
to track that since it isn't the same issue as this one.
> SSN Close called before TXN Close
> ---------------------------------
>
> Key: TS-1007
> URL: https://issues.apache.org/jira/browse/TS-1007
> Project: Traffic Server
> Issue Type: Bug
> Components: TS API
> Affects Versions: 3.0.1
> Reporter: Nick Kew
> Assignee: Susan Hinrichs
> Labels: incompatible
> Fix For: 6.0.0
>
>
> Where a plugin implements both SSN_CLOSE_HOOK and TXN_CLOSE_HOOK, the
> SSN_CLOSE_HOOK is called first of the two. This messes up normal cleanups!
> Details:
> Register a SSN_START event globally
> In the SSN START, add a TXN_START and a SSN_CLOSE
> In the TXN START, add a TXN_CLOSE
> Stepping through, I see the order of events actually called, for the simple
> case of a one-off HTTP request with no keepalive:
> SSN_START
> TXN_START
> SSN_END
> TXN_END
> Whoops, SSN_END cleaned up the SSN context, leaving dangling pointers in the
> TXN!
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