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https://issues.apache.org/jira/browse/TS-4259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15183085#comment-15183085
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ASF GitHub Bot commented on TS-4259:
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Github user SolidWallOfCode commented on the pull request:
https://github.com/apache/trafficserver/pull/514#issuecomment-193281511
Quite possible. As usual we had crashes at Y! due to this which I patched
there. Do noteTS-3359 though which caused this problem by fixing other tunnel
related crashes. Also, I consider this a hack which should be fixed in a better
way once TS-3612 is done.
> ua_session should not be NULL'd out if not closed
> -------------------------------------------------
>
> Key: TS-4259
> URL: https://issues.apache.org/jira/browse/TS-4259
> Project: Traffic Server
> Issue Type: Bug
> Reporter: Alan M. Carroll
> Assignee: Alan M. Carroll
> Fix For: 6.2.0
>
>
> In {{HttpSM::tunnel_handler_server}} the tunnel may get shut down due to an
> issue with the server by calling {{HttpTunnel::chain_abort_all}}. The code
> presumes this will close {{ua_session}} because it is in the tunnel but it
> has been observed this is not always true. Therefore the tunnel state of
> {{ua_entry}} which corresponds to {{ua_session}} should be checked.
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