[sr-dev] [kamailio/kamailio] SDP filtering issues with sdpops module (#2755)

Daniel-Constantin Mierla notifications at github.com
Wed Jun 9 09:44:22 CEST 2021

The code needs to be updated to be able to catch `a=rtcp-fb:`, probably it was not a common attribute when the sdp parser was written and not covered at that time (iirc, it was @ovidiusas writing the sdp parser).

The solution right now is to use `subst_body()` function to remove lines from sdp matching `a=rtcp-fb:ID`, replacing the ID with the corresponding codec numeric ids:

  * https://www.kamailio.org/docs/modules/stable/modules/textops.html#textops.f.subst_body

If you do not want video media stream, there is a function to remove it all together:

  * https://www.kamailio.org/docs/modules/stable/modules/sdpops.html#sdpops.f.sdp_with_media

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