[asterisk-bugs] [JIRA] (ASTERISK-29201) Crash occurs when Transfer and execute Hangup before the Transfer result

[Asterisk Team (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-29201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=252966#comment-252966 ] 

Asterisk Team commented on ASTERISK-29201:
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> Crash occurs when Transfer and execute Hangup before the Transfer result 
> -------------------------------------------------------------------------
>
>                 Key: ASTERISK-29201
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29201
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip
>    Affects Versions: 16.15.0, 17.9.0, 18.1.0
>         Environment: Ubuntu 16 and 18
>            Reporter: Dan Cropp
>
> In the code I submitted for ASTERISK-26968 there is a bug which can cause a crash.  That code added support for a SUBSCRIPTION session which was not always being cleaned up.
> We perform a transfer using AMI.  The transferred call is not answered and we don't receive a transfer result, we then issue a Hangup using AMI.  The call terminates, but does not cleanup the SUBSCRIPTION.  As a result, there is a leak.  What we found at two different sites is the SUBSCRIBE/NOTIFY happens roughly 10 minutes later and often (not 100%) crashes.
> Regardless of the crash or not, the code is missing some conditions where it should cleanup the subscription.
> We have a fix for this issue which I would like to submit.  I will need to refresh on the steps to make a submission.



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