[asterisk-bugs] [JIRA] (ASTERISK-21859) Confbridge doesn't tear down an empty conference bridge when all users were kicked via end_marked=yes. Also, side effect crashes.

[Kevin Harwell (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21859?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on ASTERISK-21859 started by Kevin Harwell.

> Confbridge doesn't tear down an empty conference bridge when all users were kicked via end_marked=yes. Also, side effect crashes.
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21859
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21859
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_confbridge
>    Affects Versions: 11.4.0
>         Environment: Asterisk 11.4.0 on Raspberry Pi with 2-9-2013-debian-wheezy and 11.3.0 running on an Intel Atom w/ Ubuntu 12.04.
>            Reporter: Chris Gentle
>            Assignee: Kevin Harwell
>         Attachments: alsa.conf, backtrace.txt, confbridge.conf, conferences.txt, extensions.conf, full, full.txt, leader_connect.sh, leader_disconnect.sh
>
>
> Please reference:
> http://lists.digium.com/pipermail/asterisk-users/2013-June/279231.html
> I've set up a conference where I'm relying on end_marked=yes to kick all participants when the leader exits.  This results in an error as shown below:
> {noformat}
>  << Hangup on console >>
>     -- <Bridge/0x2364be4-input> Playing 'confbridge-leave.slin' (language 'en')
>     -- Stopped music on hold on SIP/gent_2880-00000002
>     -- <SIP/gent_2880-00000002> Playing 'custom/thank-you.ulaw' (language 'en')
>     -- Executing [1000 at conferences:2] Hangup("SIP/gent_2880-00000002",
> "") in new stack
> == Spawn extension (conferences, 1000, 2) exited non-zero on
> 'SIP/gent_2880-00000002'
> {noformat}
> In this case, the conference leader was the alsa console channel.  Once it was hung up, a non-zero exit status caused the confbridge to go into a bad state showing 0 users:
> confbridge list
> {noformat}
> Conference Bridge Name           Users  Marked Locked?
> ================================ ====== ====== ========
> 1000                                  0      0 unlocked
> {noformat}
> Asterisk has to be restarted to clear this.  In a normal exit, a "confbridge list" would not show conference 1000 because it would have been destroyed.
> If no participants are dialed into the conference, everything closes cleanly when the leader exits.
> *The same scenario can be reproduced with only two SIP channels, one marked and one not marked. See comments*

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