Hi Denys, It is nothing unusual to see private ip address in the ICE candidate list. rfc5245 : "Naturally, one viable candidate is a transport address obtained directly from a local interface."
Here you can find more info: https://tools.ietf.org/html/rfc5245#section-2.1 On Fri, Apr 21, 2017 at 11:46 AM, Denys Pozniak <[email protected] > wrote: > Hello! > > I have next topology: ISP->Kamailio + Rtpengine->WebRTC > Sometimes I receive from Browser side SDP like below with private IPs in > ICE candidates. > > - Please explain why it happens? > - How ICE finds a pair? I think Rtpengine obtains packet from Browser > and somehow matches with peer (as it can't reach Browser via private IP) > > > > U KAMAILIO_IP:34150 -> RTPENGINE_IP:22222 > 0_16586_545 d3:sdp962:v=0. > o=- 3981552194926701250 2 IN IP4 127.0.0.1. > s=-. > t=0 0. > a=msid-semantic: WMS 5efe361e-087d-47de-98f6-9b51427d3764. > m=audio 50589 RTP/SAVPF 8 0. > c=IN IP4 192.168.2.205. > a=rtcp:9 IN IP4 0.0.0.0. > a=candidate:710145796 1 udp 2122255103 <(212)%20225-5103> > 2001::9d38:6abd:3c21:28f:3f57:fd32 50588 typ host generation 0 network-id > 1 network-cost 50. > a=candidate:2355154215 1 udp 2122194687 <(212)%20219-4687> 192.168.2.205 > 50589 typ host generation 0 network-id 2. > a=ice-ufrag:sPAh. > a=ice-pwd:RjXqOz8rpwjhKPU3BzXkJd1d. > a=fingerprint:sha-256 04:AF:D4:6C:07:C2:DD:18:48:E0: > BC:46:15:15:00:5F:C9:AD:CF:8D:F3:94:55:5A:54:0C:37:B3:E6:44:63:EC. > a=setup:active. > a=mid:audio. > a=sendrecv. > a=rtcp-mux. > a=rtpmap:8 PCMA/8000. > a=rtpmap:0 PCMU/8000. > a=ssrc:3055599516 <(305)%20559-9516> cname:n0Cdw7SNbYDIba8s. > a=ssrc:3055599516 <(305)%20559-9516> msid:5efe361e-087d-47de-98f6-9b51427d3764 > 41750b25-d640-4bad-8953-55f4e2684c49. > a=ssrc:3055599516 <(305)%20559-9516> mslabel:5efe361e-087d-47de-98f > 6-9b51427d3764. > a=ssrc:3055599516 <(305)%20559-9516> label:41750b25-d640-4bad-8953- > 55f4e2684c49. > 3:ICE6:remove5:flagsl13:trust-address14:media-handover8:SDES > -offe7:replacel6:origin18:session-connectione18:transport- > protocol7:RTP/AVP8:rtcp-muxl5:offer6:accepte7:call-id37: > domain.com_29465313:received-froml3:IP412:10.23.255.93e8: > from-tag13:QQcg5eFv08S9K6:to-tag10:nsebpmf7ia7:command6:answere > > > > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > -- Regards, Arsen Semionov Eurolan.info cell: +442035198881
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