Hi Oli,
i am happy not beeing the only one with trouble with Colt... ;-) The question is, when do you call rtpengine_manage? After this block or before? A major difference between RTPEngine and RTPProxy is, that RTPProxy only replaces IP/Port, while RTPEngine takes the complete SDP and returns a new SDP. Probably, you want to sdp_remove_codecs(), call msg_apply_changes() and then send it to RTPEngine. Or send it to RTPEngine, msg_apply_changes() and then sdp_remove_codecs().
What you are trying to do works: We are using exact the same mechanism to remove AMR Octet aligned variants from the SDP (you find it in the examples folder for the Proxy-CSCF). We remove the codec and then send it to RTPEngine, but also the other direction should work.
Thanks, Carsten
2016-11-16 10:03 GMT+01:00 Oliver Roth oliver.roth@nexphone.ch:
Hi there
I have the following problem – I need to remove a codec in the initial INVITE.
This happens since I changed from rtpproxy to rtpengine. I changed all rtpproxy_manage() to rtpengine_manage().
Originating INVITE with the “clearmode”
m=audio 9196 RTP/AVP 8 0 125 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:125 CLEARMODE/8000
a=rtpmap:101 telephone-event/8000
I do the following in the config
route[SDP] {
xlog(, "L_INFO", "SDP: request method $rm"); # remove CLEARMODE if Colt if($avp(s:todirection) =~"^MyCarrier+") { if (is_method("INVITE")) { xlog(, "L_INFO", "SDP remove:request method $rm");
msg_apply_changes();sdp_remove_codecs_by_name("CLEARMODE");
#sdp_remove_codecs_by_id("125");
} }}
This block gets hit as I can see with the xlog entry.
In the sent INVITE the “Clearmode” is still in the sdp header
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:125 CLEARMODE/8000
a=rtpmap:101 telephone-event/8000
So with rtpproxy – it worked
With rtpengine not any more …
Any idea?
KR,
Oli
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