[OpenSIPS-Users] FW: CANCELs with no transaction

[Juri Nysschen]

Hi Dave

I have used wireshark to review the cancel message on a call timeout (which
works) and when received from the UA.

The difference is in the branch= value as you predicted. 

How can I save the branch value on the INVITE and then change it on the
CANCEL? 
I've tried all sorts of combinations for $branch but the vales are always
NULL


Regards
Juri Nysschen

-----Original Message-----
From: users-bounces at lists.opensips.org
[mailto:users-bounces at lists.opensips.org] On Behalf Of Dave Singer
Sent: Monday, February 14, 2011 10:16 PM
To: OpenSIPS users mailling list
Subject: Re: [OpenSIPS-Users] FW: CANCELs with no transaction

Juri,

This was gnawing at me so I searched and found the "official" answer
of what a CANCEL should look like.
Go to
http://www.ietf.org/rfc/rfc3261.txt
and search for "9 Canceling a Request"