Hello, The problem of kamailio not receiving the packet's is that packet size of 200 response seems to be too large. I removed the SDP from response and it arrives.
Anyone had a similar problem and knows how it might get solved (accept switching to TCP) Kind regards, Marko 2014-10-24 10:51 GMT+02:00 Marko Seidenglanz <marko.seidengl...@gmail.com>: > Hello, > > We are trying to use Kamailio 4.2 with RTPEngine 3.3 behind NAT. > > Somehow SIP responses (200 OK) are not handled by Kamailio. > > > > The following INVITE is send to the receiving end (WebRTC Client): > > INVITE sip:evqzk4l62mdf3g7u6e...@whtest3.24dial.com SIP/2.0 > Record-Route: <sip:104.155.11.255:5060;nat=yes;lr=on> > Via: SIP/2.0/UDP 104.155.11.255:5060 > ;branch=z9hG4bK865.9db0c023bec2f314e89ae0f18b78d2f0.0 > Via: SIP/2.0/UDP 10.240.215.73:5060 > ;rport=5060;received=146.148.113.245;branch=z9hG4bK644600e2 > Max-Forwards: 69 > From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=as68f0a26a > To: <sip:evqzk4l62mdf3g7u6e...@whtest3.24dial.com> > Contact: <sip:anonymous@10.240.215.73:5060;alias=146.148.113.245~5060~1> > Call-ID: 368f6ec901a3552e3b37a70907634f4f@10.240.215.73:5060 > CSeq: 102 INVITE > User-Agent: Asterisk PBX 12.5.0 > Date: Fri, 24 Oct 2014 08:38:09 GMT > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, > PUBLISH, MESSAGE > Supported: replaces, timer > Content-Type: application/sdp > Content-Length: 738 > P-hint: outbound > ....... > > > The client response looks like this: > > SIP/2.0 200 OK > Via: SIP/2.0/UDP 104.155.11.255:5060 > ;branch=z9hG4bK865.9db0c023bec2f314e89ae0f18b78d2f0.0;rport=5060;received=104.155.11.255 > , SIP/2.0/UDP 10.240.215.73:5060 > ;rport=5060;received=146.148.113.245;branch=z9hG4bK644600e2 > From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=as68f0a26a > To: <sip:evqzk4l62mdf3g7u6e...@whtest3.24dial.com > >;tag=E2VMB39U5NYHCXLZREFGQV2DAXPCZXNQ6J6P > Contact: <sip:evqzk4l62mdf3g7u6e...@whtest3.24dial.com > >;tag=E2VMB39U5NYHCXLZREFGQV2DAXPCZXNQ6J6P > Call-ID: 368f6ec901a3552e3b37a70907634f4f@10.240.215.73:5060 > CSeq: 102 INVITE > Record-Route: <sip:104.155.11.255:5060;nat=yes;lr=on> > Content-Type: application/sdp > Content-Length: 938 > ....... > > > > I have a xlog call as the first statement in kamailio routing script. I > can see the request, which get's handled correctly but the response does > not appear in kamailio log, though it arrives at the machine. > > I am totally helpless, what might be wrong. If we use kamailio on a public > accessable machine everything works as expected. > > > Maybe anyone might have had similiar problems using kamailio behind NAT. > > > Kind regards, > Marko >
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