I use RTPengine to proxy media.
In my config used
modparam("rtpengine", "write_sdp_pv", "$avp(sdp)")
route[PROXY_MEDIA]
{
...
rtpengine_manage("SDES=off");
set_body("$(avp(sdp){re.subst,/^a=ssrc.*\n//g}{re.subst,/^a=msid-semantic.*\n//g}{re.subst,/^a=end-of-candidates\r\n//g})",
"application/sdp");
}
On Mon, May 29, 2023 at 2:46 PM Sergiu Pojoga <[email protected]> wrote:
> Can't you achieve the desired manipulations using the SDPOPS module?
>
>
> https://www.kamailio.org/docs/modules/devel/modules/sdpops.html
>
>
> On Mon, May 29, 2023, 5:39 a.m. Patrick Karton <[email protected]>
> wrote:
>
>> Hello kamailio community,
>>
>> i know its an unusual query but i would like to know if there is a
>> cleaner/proper.right way to disable some (or all) media streams in SDP.
>>
>> i have come with a solution by sdpops module with subst_body function
>> like this.
>>
>> route[SDP_DISABLE_UNAUTHORIZED_MEDIA]{
>> # disable text,media and video media streams
>> subst_body('#^m=(video|text|audio)[ ]+[0-9/]+(.*)$#m=\1 0 \2#ig');
>>
>> # update originator ip address
>> subst_body('#^o=([^ ]+)[ ]+([^ ]+)[ ]+([^ ]+)[ ]+([^ ]+)[ ]+([^ ]+)[
>> ]+([^ ]+)$#o=\1 \2 \3 \4 \5 7.7.7.7#ig');
>> # 1 2 2 4 5 6
>> # name sid snumber network net-type addr
>>
>> # update connection ip address
>> subst_body('#^c=([^ ]+)[ ]+([^ ]+)[ ]+([^ ]+)$#c=\1 \2 7.7.7.7#ig');
>> # 1 2 3
>> # network net-type addr
>>
>> #remove all media attributes
>> sdp_remove_line_by_prefix("a=fmtp");
>> sdp_remove_line_by_prefix("a=X-");
>> sdp_remove_line_by_prefix("a=rtcp");
>> sdp_remove_line_by_prefix("a=ssrc");
>> sdp_remove_line_by_prefix("a=sendrecv");
>> sdp_remove_line_by_prefix("a=sendonly");
>> sdp_remove_line_by_prefix("a=recvonly");
>> sdp_remove_line_by_prefix("a=inactive");
>> sdp_remove_line_by_prefix("b=");
>>
>> }
>>
>>
>> is it the right way to do it. if not can someone provide me an
>> alternative solution.
>>
>> Thanks :)
>>
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