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Summary:ASTERISK-21145: asterisk doesn't continue to the next priority after a soft hangup
Reporter:Paul Albrecht (palbrecht)Labels:
Date Opened:2013-02-21 09:39:17.000-0600Date Closed:
Priority:MajorRegression?Yes
Status:Open/NewComponents:PBX/General
Versions:1.8.20.1 10.12.1 11.2.1 13.18.4 Frequency of
Occurrence		Constant
Related
Issues:
Environment:Linux manage 3.0.6-gentoo #1 SMP Wed Nov 16 02:09:24 Local time zone must be set--see zic x86_64 Intel Core i7 9xx (Nehalem Class Core i7) GenuineIntel GNU/LinuxAttachments:
Description:Noticed a change in ast_softhangup after moving to asterisk 10. Asterisk doesn't continue to the next priority after a soft hangup which doesn't make much sense.

See asterisk-dev: http://lists.digium.com/pipermail/asterisk-dev/2013-February/058709.html

[Edit by Rusty Newton - adding the E-mail below (links could get broken in the future)]

{quote}
> >> I noticed a change in ast_softhangup after moving to asterisk 10.
> >> Now
> >> asterisk doesn't continue to the next priority after a soft hangup
> >> which doesn't make much sense. Is this an feature or bug?
> >
> > Either svn revisions
> > -r190423 Changes channels to ref counted objects
> > -r225244 Add support for OBJ_MULTIPLE
> >
> > Causes the issue.  The app does not continue in the dialplan if no
> > channels are found to hangup or there was a memory allocation
> > error.
> >
> > Its a bug.
>
> That's what I thought. What about ast_channel_clear_softhangup? Why
> does it need to go through the readq?
>  The only thing ast_softhangup queues is a null frame and I thought
>  they're supposed to be ignored.

There is a comment in ast_channel_clear_softhangup() that says why.
There is another comment in __ast_read() where the AST_CONTROL_END_OF_Q
control frame is put in the read queue that gives even more information.

Basically, when ast_read() sees a hangup, there may be pending frames
in the read queue so it puts a control frame in the read queue to know
when all pending frames have been read and to block any more frames
from being put on the read queue.  ast_read() will then return a NULL
to indicate a hangup.
{quote}
Comments:By: Rusty Newton (rnewton) 2013-02-21 16:41:07.078-0600

Note that 10.X is in "Security Fix Only" state, so it will not receive any fixes for this issue. The fix would be in 1.8.X, 11.X and Trunk assuming those are all affected.

https://wiki.asterisk.org/wiki/display/AST/Asterisk+Versions

Thanks!