1 Dec
2020
1 Dec
'20
11:36 a.m.
Is there a way to obtain the effect of msg_apply_changes in a branch route?
I want to do:
route[BRANCHMANAGE] {
rtpengine_manage()
msg_apply_changes()
// further mangle the SDP with textops for
// obtuse UAs
}
The reason for this, is that after forking, I have some UAs that are
extremely picky about SDP, and I need to mangle the body to make them
happy. (4000 char limit, 68 attribute limit on SDP body - ever seen
that? Compared with the absolutely gigantic OFFERs from WebRTC
signalling libraries...)
Now rtpengine_manage() and textops are working on separate copies of
the msg body and the results don't stack correctly.
Cheers
Anthony Alba
1 Dec
1 Dec
8:57 p.m.
Hello,
at this moment, msg_apply_changes() works before the transaction is
created. Transaction itself is rather big structure and handling it is
done with a complex state machine (lifetime timers, retransmissions,
callbacks, ...). If someone wants to work on such enhancement, is more
than welcome, just make it configurable and as much as possible not
intrusive. For the moment, obviously branch processing is done in the
context of transaction.
On the other hand, if you need it in relation with rtpengine, there are
variables that you can use to set/get the sdp exchanged with rtpengine:
*
https://www.kamailio.org/docs/modules/stable/modules/rtpengine.html#rtpengi…
Then you can change what is returned and use set_body().
Cheers,
Daniel
On 01.12.20 09:36, Anthony Alba wrote:
Is there a way to obtain the effect of
msg_apply_changes in a branch route?
I want to do:
route[BRANCHMANAGE] {
rtpengine_manage()
msg_apply_changes()
// further mangle the SDP with textops for
// obtuse UAs
}
The reason for this, is that after forking, I have some UAs that are
extremely picky about SDP, and I need to mangle the body to make them
happy. (4000 char limit, 68 attribute limit on SDP body - ever seen
that? Compared with the absolutely gigantic OFFERs from WebRTC
signalling libraries...)
Now rtpengine_manage() and textops are working on separate copies of
the msg body and the results don't stack correctly.
Cheers
Anthony Alba
_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Funding: https://www.paypal.me/dcmierla
1458
days inactive
1458
days old
1 comments
2 participants
participants (2)
-
Anthony Alba -
Daniel-Constantin Mierla