[OpenSIPS-Users] reply with CANCEL message

Alex R.S.M alex_rsm at hotmail.com
Thu Nov 13 18:17:36 CET 2008

No CANCEL message is being sent to openSIPS.  OpenSIPS received 180 from both End-points. One End-point answers. 
I want OpenSIPS to generate CANCEL message and sends to the other End-point.

> Date: Thu, 13 Nov 2008 17:45:50 +0100
> From: ibc at aliax.net
> CC: users at lists.opensips.org
> Subject: Re: [OpenSIPS-Users] reply with CANCEL message
> 2008/11/13 Alex R. S. M <alex_rsm at hotmail.com>:
> > The INVITE request to End-point B generated with append_branch() within
> > openSIP.
> > So how openSIP knows to generate a CANCEL message when one End-point answers
> > the call?
> What is the problem? when you generate a new branch with
> "append_branch()" OpenSIPS already know that this transaction has a
> new branch, so if it receives a CANCEL from upstream it will "forward"
> it to all the pending branches (including the new created one). This
> is done automatically by OpenSIPS when using "t_relay()" for the
> CANCEL request.
> But I don't understand why you think OpenSIPS doesn't handle it
> internally, of course it does.
> -- 
> Iñaki Baz Castillo
> <ibc at aliax.net>
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