4 Jul
2013
4 Jul
'13
9:58 a.m.
So if I use the t_cancel_callid function, Kamailio sends a CANCEL to the UAS, but
doesn't send anything to the UAC? Or do I need to handle that myself?
-----Original Message-----
From: sr-users-bounces(a)lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org]
On Behalf Of Olle E. Johansson
Sent: Thursday, July 4, 2013 9:45 AM
To: Kamailio (SER) - Users Mailing List
Subject: Re: [SR-Users] Sending CANCEL
4 jul 2013 kl. 09:32 skrev Alex Balashov <abalashov(a)evaristesys.com>om>:
Kamailio is a proxy, and not designed to originate
requests.
If you really, really want to generate a request, you can use uac_req_send():
http://kamailio.org/docs/modules/4.0.x/modules/uac.html#idp1686632
But, you'll have to spoof all the parameters, including the pertinent branch ID, From
tag and CSeq, correctly. I'm not sure if $uac_req(...) lets you do that.
This is a very bad idea. CANCELs -- like most requests -- are for user agents to send,
not proxies.
Alex,
Who sends a CANCEL on a fork? ;-)
That's the proxy's job.
(Sorry could not resist)
But you are right that if you cancel ALL branches in the proxy so that the UA suddenly
gets a 487 and is not aware of the CANCEL that can be messy.
/O
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