<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">If you don't use some other engine to handle webrtc, then if you are calling something that is registered to you over websockets it will automatically enable media_webrtc for you. Otherwise you'll need some external way of knowing if the endpoint is webrtc or not so you can apply the settings properly.<div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On May 30, 2016, at 9:14 AM, Ján Füri <<a href="mailto:furi@vmtele.com" class="">furi@vmtele.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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Hello, <br class="">
<br class="">
My freeswitch's INVITE sdp offers two m=audio lines. (RTP/SAVP and
RTP/AVP). <br class="">
That's OK, because I want it so ;)<br class="">
<br class="">
But both use the same audio port number. <b class=""></b><br class="">
Is that possible to change this behavior ? To use different audio
port numbers for each m=audio line ...<br class="">
Please check my example below. In SDP from my freeswitch, both
m-lines have <b class="">m=audio </b><b class="">22284</b>.<br class="">
<br class="">
The reason, why I want to change this is WebRTC and RTPengine.
RTPengine changes this INVITEs to RTP/SAVPF.<br class="">
And the changed RTP/SAVPF is then not acceptable for chrome
browsers. Firefox works well (so far).<br class="">
I already reported this to the RTPengine but they say the problem is
with INVITE from freeswitch because the m-audio lines use the same
port.<br class="">
<br class="">
My example :<br class="">
incoming calls -> Media Server (freeswitch) -> Kamailio (sip
and websocket proxy) -> WebRTP and SIP clients <br class="">
<br class="">
I have found a feature <b class="">media_webrtc=true</b> so I could avoid
using rtpengine for webrtc clients (that would be really awesome),
but then classic sip clients are offered only with RTP/SAVPF and
most sip phones do not know RTP/SAVPF so the calls are rejected :(<br class="">
<br class="">
<br class="">
INVITE SDP from freeswitch: <br class="">
<br class="">
v=0.<br class="">
o=SBC 1464589775 1464589776 IN IP4 <freeswitch-public-ip>.<br class="">
s=SBC.<br class="">
c=IN IP4 <freeswitch-public-ip>.<br class="">
t=0 0.<br class="">
<b class="">m=audio 22284 RTP/SAVP 8 0 9 3 18.</b><br class="">
a=rtpmap:8 PCMA/8000.<br class="">
a=rtpmap:0 PCMU/8000.<br class="">
a=rtpmap:9 G722/8000.<br class="">
a=rtpmap:3 GSM/8000.<br class="">
a=rtpmap:18 G729/8000.<br class="">
a=rtcp:22285 IN IP4 <freeswitch-public-ip>.<br class="">
a=crypto:1 AEAD_AES_256_GCM_8
inline:Q/O+iUzZ9AZLcrADA7w/XcpkmuW6yArr1vsaWc0coTyWUIRLX2qfCA7XDAs.<br class="">
a=crypto:2 AEAD_AES_128_GCM_8
inline:mBb/SmBuSQNSm8lC5giUfZMCv0ZYINvsQiX2sw.<br class="">
a=crypto:3 AES_CM_256_HMAC_SHA1_80
inline:ahOTNSsdmHLIOBqvUyGyNjd+gDfAE/+jA6w7XwzGWxBMjtzf5akXNvM/OGy0jQ.<br class="">
a=crypto:4 AES_CM_192_HMAC_SHA1_80
inline:k7002pXV/SUT7JHhZTYaMV5keUTp1EP57M4rcNZnAoZZzsceTXA.<br class="">
a=crypto:5 AES_CM_128_HMAC_SHA1_80
inline:bHcV4E/OnzMkNeaFplPWt4RELILYZeGlifnJNlRV.<br class="">
a=crypto:6 AES_CM_256_HMAC_SHA1_32
inline:zJkowU1tc5rQR5BPpg2m3eE97ZqXLFFJc1Agh89XuZynPFMrXhO266+eMZCd2A.<br class="">
a=crypto:7 AES_CM_192_HMAC_SHA1_32
inline:2DwGI3UAPsLFBS5sJBsc+pzEsITQwDHCvB0u7pK/XEE3G8swsrw.<br class="">
a=crypto:8 AES_CM_128_HMAC_SHA1_32
inline:Jen6Gm56Z+4RTRmfpXTpSpoG5bduyythl1j21a15.<br class="">
a=crypto:9 AES_CM_128_NULL_AUTH
inline:Nn83liGQY7eY8LGs9qz/7EoPiHOpRgwY8H7Ts/b5.<br class="">
a=ptime:20.<br class="">
<b class="">m=audio 22284 RTP/AVP 8 0 9 3 18.</b><br class="">
a=rtpmap:8 PCMA/8000.<br class="">
a=rtpmap:0 PCMU/8000.<br class="">
a=rtpmap:9 G722/8000.<br class="">
a=rtpmap:3 GSM/8000.<br class="">
a=rtpmap:18 G729/8000.<br class="">
a=rtcp:22285 IN IP4 <freeswitch-public-ip>.<br class="">
a=ptime:20.<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
INVITE SDP from RTPengine :<br class="">
<br class="">
v=0<br class="">
o=SBC 1464589775 1464589776 IN IP4 212.232.17.66<br class="">
s=SBC<br class="">
c=IN IP4 <rtpengine-public-ip><br class="">
t=0 0<br class="">
<b class="">m=audio 31836 RTP/SAVPF 8 0 9 3 18</b><br class="">
a=rtpmap:8 PCMA/8000<br class="">
a=rtpmap:0 PCMU/8000<br class="">
a=rtpmap:9 G722/8000<br class="">
a=rtpmap:3 GSM/8000<br class="">
a=rtpmap:18 G729/8000<br class="">
a=ptime:20<br class="">
a=sendrecv<br class="">
a=rtcp:31837<br class="">
a=setup:actpass<br class="">
a=fingerprint:sha-1
11:76:2D:2A:F7:0D:5A:23:9D:F6:0C:E7:4C:DF:1E:CB:BF:5D:76:4F<br class="">
a=ice-ufrag:NauDcjVU<br class="">
a=ice-pwd:AiHk6LF4tE0GElyFMWtLeod1wH<br class="">
a=candidate:cE0FGbXWIfwj6OGD 1 UDP 2130706431
<rtpengine-public-ip> 31836 typ host<br class="">
a=candidate:cE0FGbXWIfwj6OGD 2 UDP 2130706430
<rtpengine-public-ip> 31837 typ host<br class="">
<b class="">m=audio 31866 RTP/SAVPF 8 0 9 3 18</b><br class="">
a=rtpmap:8 PCMA/8000<br class="">
a=rtpmap:0 PCMU/8000<br class="">
a=rtpmap:9 G722/8000<br class="">
a=rtpmap:3 GSM/8000<br class="">
a=rtpmap:18 G729/8000<br class="">
a=ptime:20<br class="">
a=sendrecv<br class="">
a=rtcp:31867<br class="">
a=setup:actpass<br class="">
a=fingerprint:sha-1
11:76:2D:2A:F7:0D:5A:23:9D:F6:0C:E7:4C:DF:1E:CB:BF:5D:76:4F<br class="">
a=ice-ufrag:YxCyPhQV<br class="">
a=ice-pwd:2vYt8YaMhIp2DSLPeYOKDqqBX0<br class="">
a=candidate:cE0FGbXWIfwj6OGD 1 UDP 2130706431
<rtpengine-public-ip> 31866 typ host<br class="">
a=candidate:cE0FGbXWIfwj6OGD 2 UDP 2130706430
<rtpengine-public-ip> 31867 typ host<br class="">
<br class=""></div></div></blockquote></div><br class=""></div></body></html>