3 May
2014
3 May
'14
6:58 a.m.
Hi,
I am trying to append new field in SDP and I need to append new line but I
don't know how. I tried to google for solution but I didn't find anything.
I want to route my RTP and RTCP packet to port 5060 (this is for
development of my school project, I know that in the context of correct SIP
this has no sense but this is only experimental).
My sample kamailio.cfg code:
if (is_method("INVITE"))
{
# route RTP packets to 5060
if (search_body('m=audio [0-9]+'))
{
subst_body('/^m=audio
[0-9]+/m=audio 5060/g');
}
# route RTCP packets to 5060
if (search_body('a=rtcp:[0-9]+ IN
IP4 [0-9]+.[0-9]+.[0-9]+.[0-9]+'))
{
subst_body('/^a=rtcp:[0-9]+
IN IP4 [0-9]+.[0-9]+.[0-9]+.[0-9]+/a=rtcp:5060 IN IP4 192.168.11.129/g');
}
else
{
search_append_body('m=audio
[0-9]+ RTP/AVP [0-9]+ [0-9]+ [0-9]+ [0-9]+ [0-9]+ [0-9]+ [0-9]+', '
*{NEW_LINE_NEEDED_HERE}*a=rtcp:5060 IN IP4 192.168.11.129');
}
}
}
Could someone please help me resolve what should I replace the
{NEW_LINE_NEEDED_HERE} with to add new line after 'm=audio' field? Also If
you have some idea how should I optimize my regexp for finding
'm=audio'/'a=rtcp' fields I would appreciate your help.