Hi Dmitry,
In failure route you re-process the original request (INVITE) and not
the 488 reply - the reply is just the trigger.
Do you change the INVITE SDP before the first attempt (which ends with
488) ? Or you change it for the first time in the failure route ?
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
OpenSIPS Summit 2018
http://www.opensips.org/events/Summit-2018Amsterdam
On 02/01/2018 05:34 PM, Dmitry wrote:
Hello Bogdan,
Thank you for advice.
I catched 488 and can send INVITE from failure_route, but I can’t
modify body inside it.
The main goal is change SAVP profile to AVP when 488 received.
I tried to do it via rtpengine_offer function. It doesn’t work. I
guess, it try to read the body from response (488 in my case) but not
from request.
I tried to rewrite body via remove_body_part and add_body_part
functions, it also doesn’t work.
So, I don’t understand how exactly rewrite body in failure_route
before do t_relay().
In addition, I tried making a new branch (via append_branch function
and via branch_route). It just duplicate my re-INVITE without changing
the body.
Could you please drop a hint (example on few lines of code) how to do it?
Thanks.
*From:*Bogdan-Andrei Iancu [mailto:[email protected]]
*Sent:* Wednesday, January 31, 2018 6:55 PM
*To:* OpenSIPS users mailling list <[email protected]>; Dmitry
<[email protected]>
*Subject:* Re: [OpenSIPS-Users] Handling 488 on a leg B
Hello Dmitry,
What you want to do is called (in SIP) serial forking. Use
failure_route{} to catch the 488 and to add a create a new branch
(with modified body) .
See: http://www.opensips.org/Documentation/Script-Routes-2-3#toc3
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
OpenSIPS Summit 2018
http://www.opensips.org/events/Summit-2018Amsterdam
On 01/30/2018 02:56 PM, Dmitry wrote:
Hello all,
Could you say how can I re-send INVITE with changed SDP to B-leg
after receive 488 from it?
Call flow:
-> A-leg INVITE
<- A-leg 100
-> B-leg INVITE
<- B-leg 100
<- B-leg 488 – I catch it, and want to send INVITE again with
properly SDP
-> B-leg ACK
<-A-leg 488
-> B-leg ACK
Thanks for any advice.
Cheers!
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