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<p class="MsoNormal">Hello List,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a setup of two WebRTC-Clients registered to kamailio. RegA calls RegB. Signalling itself for connection seems to work until the point RegA receives the 200Ok and wants to send the ACK, kamailio throws errors. Here are the 200Ok with
the following ACK and the errors that kamailio writes:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">200OK (from RegB to RegA, successful):<o:p></o:p></p>
<p class="MsoNormal">SIP/2.0 200 OK<o:p></o:p></p>
<p class="MsoNormal">Record-Route: <sip:zfHrSW4KTMuuxQYK+gVKH5MK+gUR1jc=@10.250.5.74:8083;transport=ws;lr=on;ftag=3bege11omg><o:p></o:p></p>
<p class="MsoNormal">Via: SIP/2.0/WSS 192.0.2.1;rport=54839;received=10.250.5.17;branch=z9hG4bK415866<o:p></o:p></p>
<p class="MsoNormal">To: <sip:dnagorny@r5dev-kam1.robot5.de>;tag=ecmmlvc4ee<o:p></o:p></p>
<p class="MsoNormal">From: "Testaccount" <sip:4@r5dev-kam1.robot5.de>;tag=3bege11omg<o:p></o:p></p>
<p class="MsoNormal">Call-ID: vu8rkkgki2uupuf2cqf4<o:p></o:p></p>
<p class="MsoNormal">CSeq: 2017 INVITE<o:p></o:p></p>
<p class="MsoNormal">Contact: <sip:l1jevtog@192.0.2.59;alias=10.250.5.17~54838~6;alias=10.250.5.17~54838~6;transport=ws><o:p></o:p></p>
<p class="MsoNormal">Supported: ice,replaces,outbound<o:p></o:p></p>
<p class="MsoNormal">Content-Type: application/sdp<o:p></o:p></p>
<p class="MsoNormal">Content-Length: 1001<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">v=0<o:p></o:p></p>
<p class="MsoNormal">o=mozilla...THIS_IS_SDPARTA-47.0 4652302965311172452 0 IN IP4 0.0.0.0<o:p></o:p></p>
<p class="MsoNormal">s=-<o:p></o:p></p>
<p class="MsoNormal">t=0 0<o:p></o:p></p>
<p class="MsoNormal">a=sendrecv<o:p></o:p></p>
<p class="MsoNormal">a=fingerprint:sha-256 1A:88:2D:6E:9F:82:14:E0:A2:DB:A7:16:56:00:2C:25:1B:D2:D1:EE:B2:D5:ED:6F:E1:7C:5C:B4:1A:30:9C:85<o:p></o:p></p>
<p class="MsoNormal">a=group:BUNDLE audio<o:p></o:p></p>
<p class="MsoNormal">a=ice-options:trickle<o:p></o:p></p>
<p class="MsoNormal">a=msid-semantic:WMS *<o:p></o:p></p>
<p class="MsoNormal">m=audio 30710 UDP/TLS/RTP/SAVPF 111<o:p></o:p></p>
<p class="MsoNormal">c=IN IP4 10.250.5.74<o:p></o:p></p>
<p class="MsoNormal">a=candidate:0 1 UDP 2122252543 10.250.5.17 52581 typ host<o:p></o:p></p>
<p class="MsoNormal">a=candidate:1 1 UDP 1686052863 87.158.246.174 49807 typ srflx raddr 10.250.5.17 rport 52581<o:p></o:p></p>
<p class="MsoNormal">a=end-of-candidates<o:p></o:p></p>
<p class="MsoNormal">a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level<o:p></o:p></p>
<p class="MsoNormal">a=fmtp:111 maxplaybackrate=48000;stereo=1<o:p></o:p></p>
<p class="MsoNormal">a=ice-pwd:4d722747e7d3b3caa360ebe9e646fb44<o:p></o:p></p>
<p class="MsoNormal">a=ice-ufrag:2b7e23b8<o:p></o:p></p>
<p class="MsoNormal">a=mid:audio<o:p></o:p></p>
<p class="MsoNormal">a=msid:{5cea7c38-cc3e-4bd2-9a3b-5d2381f0acf9} {0236e1cf-dfdc-4c94-8ce0-59f52a23ebb1}<o:p></o:p></p>
<p class="MsoNormal">a=rtpmap:111 opus/48000/2<o:p></o:p></p>
<p class="MsoNormal">a=setup:active<o:p></o:p></p>
<p class="MsoNormal">a=ssrc:565594393 cname:{7df4b0da-093c-4c2d-b154-0b860b43f575}<o:p></o:p></p>
<p class="MsoNormal">a=sendrecv<o:p></o:p></p>
<p class="MsoNormal">a=rtcp:30710<o:p></o:p></p>
<p class="MsoNormal">a=rtcp-mux<o:p></o:p></p>
<p class="MsoNormal">a=candidate:Y2XhN5oQNoH6nRph 1 UDP 2122252799 10.250.5.74 30710 typ host<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">ACK (from RegA to RegB, unsuccessfull):<o:p></o:p></p>
<p class="MsoNormal">ACK sip:l1jevtog@192.0.2.59;alias=10.250.5.17~54838~6;transport=ws SIP/2.0<o:p></o:p></p>
<p class="MsoNormal">Route: <sip:zfHrSW4KTMuuxQYK+gVKH5MK+gUR1jc=@10.250.5.74:8083;transport=ws;lr=on;ftag=3bege11omg><o:p></o:p></p>
<p class="MsoNormal">Via: SIP/2.0/WSS 192.0.2.1;branch=z9hG4bK2821443<o:p></o:p></p>
<p class="MsoNormal">Max-Forwards: 69<o:p></o:p></p>
<p class="MsoNormal">To: <sip:dnagorny@r5dev-kam1.robot5.de>;tag=ecmmlvc4ee<o:p></o:p></p>
<p class="MsoNormal">From: "Testaccount" <sip:4@r5dev-kam1.robot5.de>;tag=3bege11omg<o:p></o:p></p>
<p class="MsoNormal">Call-ID: vu8rkkgki2uupuf2cqf4<o:p></o:p></p>
<p class="MsoNormal">CSeq: 2017 ACK<o:p></o:p></p>
<p class="MsoNormal">Allow: INVITE,ACK,CANCEL,BYE,UPDATE,MESSAGE,OPTIONS,REFER,INFO<o:p></o:p></p>
<p class="MsoNormal">Supported: outbound<o:p></o:p></p>
<p class="MsoNormal">User-Agent: JsSIP 1.0.1<o:p></o:p></p>
<p class="MsoNormal">Content-Length: 0<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thrown Errors:<o:p></o:p></p>
<p class="MsoNormal">kamailio[5009]: INFO: <script>: Is natted<o:p></o:p></p>
<p class="MsoNormal">kamailio[5009]: INFO: <script>: From: sip:4@r5dev-kam1.robot5.de To: sip:l1jevtog@192.0.2.59;alias=10.250.5.17~54838~6;transport=ws @ <null> Via: SIP/2.0/WSS 192.0.2.1;branch=z9hG4bK4386608 Route: <null> vu8rkkgki2uupuf2cqf4<o:p></o:p></p>
<p class="MsoNormal">kamailio[5009]: ERROR: <core> [forward.c:529]: forward_request(): cannot forward to af 2, proto 5 no corresponding listening socket<o:p></o:p></p>
<p class="MsoNormal">kamailio[5009]: ERROR: sl [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used: I'm terribly sorry, server error occurred (7/SL)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I don’t understand these errors. Can anybody explain and point me what needs to be fixed?<o:p></o:p></p>
<p class="MsoNormal">Using Kamailio 4.3.5 on CentOS7.2, funny info if I call from outside(PSTN/FreeSWITCH) to kamailio into WebRTC-Client it works w/o problems.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE">Respectfully<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:DE">Dimitry Nagorny<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:8.0pt;mso-fareast-language:DE">Trainee</span><span lang="EN-US" style="font-size:8.0pt;color:#7F7F7F;mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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