Hello,
thanks for replay. I will check how to make the script as per your suggestion, many thanks for it.
Filippo
Il giorno lun 21 feb 2022 alle ore 16:15 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:
Hello,
if you want to run kamailio development branch, then you should be able to do it with the body line iterator:
https://www.kamailio.org/docs/modules/devel/modules/textopsx.html#textopsx.f...
For stable branches at this moment I would run some inline Lua/Python/JavaScript/... script that builds the new body as wanted and then use KSR.textops.set_body(...) function.
If you use rtpengine/rtpproxy, then you should also do msg_apply_changes().
Cheers, Daniel
On 21.02.22 15:55, Filippo Graziola wrote:
Hi all, I'm facing a strange behaviour from a client (iOS application based on pjsip library) which is doing as follow when receiving a call (on phone locked):
- accept the call rejecting video (m=video 0...) in SDP
- reinvite to negotiate again video media
Specifically the reinvite passing through kamailio (+rtpengine) has this SDP body after rtpengine offer (the client use TLS so I can't see the original message):
v=0 o=- 3854443139 3854443142 IN IP4 PUBLIC_RTP_ENGINE_IP s=pjmedia b=AS:386 t=0 0 a=X-nat:0 m=audio 46734 RTP/AVP 8 101 c=IN IP4 PUBLIC_RTP_ENGINE_IP b=TIAS:96000 a=ssrc:1456418416 cname:441b90ac6db72f22 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=sendrecv a=rtcp:46735 m=video 0 RTP/AVP 96 c=IN IP4 PUBLIC_RTP_ENGINE_IP b=TIAS:256000 m=video 46776 RTP/AVP 98 c=IN IP4 PUBLIC_RTP_ENGINE_IP b=TIAS:256000 a=rtpmap:98 H264/90000 a=fmtp:98 profile-level-id=42e01e; packetization-mode=1 a=sendrecv a=rtcp:46777
from this I can understand that the client is doing something strange, because there is still the rejection line (I know that this question should go to the pjsip guys) but I would also like to know if it is possible to "clean" this sdp by kamailio. A few clients receiving this sdp are answering with only audio. Reading the docs, sdpops/textops modules allow modifying lines by prefix or media, but till now I have no luck to exclude only the line "m=video 0 RTP/AVP 96" and his attributes without touching the correct video request. Could someone please give me some hints on it?
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