Peter Kayser wrote: > HiBenny, > > we got a problem with the SDP negotiation. > The logfile shows a call szenario where we get a first contact from an announcement server. After being forwarded we get a second SDP response from the real destination. Unfortunately this SDP is ignored! So the media could not flow. > How can this be handled by pjsip? I think the problem is caused by forking, and forking currently is not handled by pjsua-lib. So currently there's no solution for this, unfortunately. cheers, -benny > Thanks in advance > Regards > Peter > > > ------------------------------------------------------------------------ > > INVITE sip:<callee>@sip.voip.de SIP/2.0 > Via: SIP/2.0/UDP 192.168.17.1:5413;rport;branch=z9hG4bKPj5712caef85b3412198f702d6a28280cd > Max-Forwards: 70 > From: sip:<caller>@sip.voip.de;tag=e2dab5c6fcee4aaba9128b241a21a7dd > To: sip:<callee>@sip.voip.de > Contact: <sip:<caller>@192.168.17.1:5413> > Call-ID: ec650a371cef402885b66f6c23ae874f > CSeq: 11324 INVITE > Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, PUBLISH, REFER, MESSAGE, OPTIONS > Supported: replaces, 100rel, norefersub > User-Agent: PJSUA v0.8.0-trunk/win32 > Proxy-Authorization: Digest username="<caller>", realm="sip.voip.de", nonce="476b996b0196db952668c7d46acb24a657ce8cee", uri="sip:<callee>@sip.voip.de", response="60c022b97d00ad45a3e7584f218423cb" > Content-Type: application/sdp > Content-Length: 435 > > v=0 > o=- 3407226062 3407226062 IN IP4 10.153.141.2 > s=pjmedia > c=IN IP4 10.153.141.2 > t=0 0 > a=X-nat:0 > m=audio 4000 RTP/AVP 117 103 102 104 3 0 8 101 > a=rtcp:4001 IN IP4 10.153.141.2 > a=rtpmap:117 iLBC/8000 > a=fmtp:117 mode=20 > a=rtpmap:103 speex/16000 > a=rtpmap:102 speex/8000 > a=rtpmap:104 speex/32000 > a=rtpmap:3 GSM/8000 > a=rtpmap:0 PCMU/8000 > a=rtpmap:8 PCMA/8000 > a=sendrecv > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-15 > > --end msg-- > SIP/2.0 183 Session Progress > Via: SIP/2.0/UDP 192.168.17.1:5413;rport=5413;branch=z9hG4bKPj5712caef85b3412198f702d6a28280cd > From: sip:<caller>@sip.voip.de;tag=e2dab5c6fcee4aaba9128b241a21a7dd > To: sip:<callee>@sip.voip.de;tag=as1b640121 > Call-ID: ec650a371cef402885b66f6c23ae874f > CSeq: 11324 INVITE > User-Agent: Mediaserver > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY > Supported: replaces > Contact: <sip:<Mediaserver>@10.153.141.5:5060> > Content-Type: application/sdp > Content-Length: 259 > > v=0 > o=root 31491 31491 IN IP4 10.153.141.5 > s=session > c=IN IP4 10.206.25.114 > t=0 0 > m=audio 45810 RTP/AVP 8 101 > a=rtpmap:8 PCMA/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-16 > a=silenceSupp:off - - - - > a=ptime:20 > a=sendrecv > a=nortpproxy:yes > > --end msg-- > 11:41:04.615 tsx016B764C Incoming Response msg 183/INVITE/cseq=11324 (rdata00A871BC) in state Proceeding > 11:41:04.615 tsx016B764C State changed from Proceeding to Proceeding, event=RX_MSG > 11:41:04.615 sip_ua_layer.c Received forked Response msg 183/INVITE/cseq=11324 (rdata00A871BC) for existing dialog dlg016B206C > 11:41:04.615 sip_ua_layer.c Unhandled forked Response msg 183/INVITE/cseq=11324 (rdata00A871BC) from 10.206.25.123:5060, response will be handed over to the first dialog > 11:41:04.615 dlg016B206C Received Response msg 183/INVITE/cseq=11324 (rdata00A871BC) > 11:41:04.615 dlg016B206C Transaction tsx016B764C state changed to Proceeding > 11:41:04.615 pjsua_app.c Call 0 state changed to EARLY (183 Session Progress) > 11:41:04.615 inv016B206C Got SDP answer in Response msg 183/INVITE/cseq=11324 (rdata00A871BC) > 11:41:04.615 inv016B206C SDP negotiation done, status=0 > > SIP/2.0 181 Call Is Being Forwarded > Record-Route: <sip:10.206.25.123;lr;ftag=e2dab5c6fcee4aaba9128b241a21a7dd> > Via: SIP/2.0/UDP 192.168.17.1:5413;rport=5413;branch=z9hG4bKPj5712caef85b3412198f702d6a28280cd > From: sip:<caller>@sip.voip.de;tag=e2dab5c6fcee4aaba9128b241a21a7dd > To: sip:<callee>@sip.voip.de;tag=ed98af1b081d58bb3b8f3b35a7ab0fdd-b45d > Call-ID: ec650a371cef402885b66f6c23ae874f > CSeq: 11324 INVITE > Server: SIP-Proxy 1.5 > Content-Length: 0 > > > --end msg-- > SIP/2.0 183 Session Progress > Via: SIP/2.0/UDP 192.168.17.1:5413;rport=5413;branch=z9hG4bKPj5712caef85b3412198f702d6a28280cd > From: sip:<caller>@sip.voip.de;tag=e2dab5c6fcee4aaba9128b241a21a7dd > To: sip:<callee>@sip.voip.de;tag=as6f372313 > Call-ID: ec650a371cef402885b66f6c23ae874f > CSeq: 11324 INVITE > User-Agent: gw1 > Contact: <sip:mg_out1_1 at 195.170.167.75:5061> > Content-Type: application/sdp > Content-Length: 199 > > v=0 > o=root 23089 23089 IN IP4 195.170.167.75 > s=- > c=IN IP4 195.170.167.76 > t=0 0 > m=audio 16426 RTP/AVP 8 101 > a=rtpmap:8 PCMA/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-16 > a=sendrecv > > --end msg-- > 11:41:16.616 pjsua_app.c Call 0 state changed to EARLY (183 Session Progress) > 11:41:16.616 inv016B206C SDP negotiation done, message body is ignored > > SIP/2.0 200 OK > Via: SIP/2.0/UDP 192.168.17.1:5413;rport=5413;branch=z9hG4bKPj5712caef85b3412198f702d6a28280cd > Record-Route: <sip:10.206.25.123;lr;ftag=e2dab5c6fcee4aaba9128b241a21a7dd;nat=yes> > Record-Route: <sip:10.206.25.114;lr;ftag=e2dab5c6fcee4aaba9128b241a21a7dd;rqu=WkNGWTJwRTBdRU1fN3pEPFJDNhwfegI/G1xZRyd3V25NCCI8> > Record-Route: <sip:10.206.25.123;lr;ftag=e2dab5c6fcee4aaba9128b241a21a7dd> > From: sip:<caller>@sip.voip.de;tag=e2dab5c6fcee4aaba9128b241a21a7dd > To: sip:<callee>@sip.voip.de;tag=as6f372313 > Call-ID: ec650a371cef402885b66f6c23ae874f > CSeq: 11324 INVITE > User-Agent: gw1 > Allow: INVITE,ACK,CANCEL,BYE,REGISTER,OPTIONS,INFO,PRACK > Contact: <sip:mg_out1_1 at 195.170.167.75:5061> > Content-Type: application/sdp > Content-Length: 199 > > v=0 > o=root 23089 23090 IN IP4 195.170.167.75 > s=- > c=IN IP4 195.170.167.76 > t=0 0 > m=audio 16426 RTP/AVP 8 101 > a=rtpmap:8 PCMA/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-16 > a=sendrecv > > --end msg-- > 11:41:16.851 tsx016B764C Incoming Response msg 200/INVITE/cseq=11324 (rdata00A871BC) in state Proceeding > 11:41:16.851 tsx016B764C State changed from Proceeding to Terminated, event=RX_MSG > 11:41:16.851 sip_ua_layer.c Received forked Response msg 200/INVITE/cseq=11324 (rdata00A871BC) for existing dialog dlg016B206C > 11:41:16.851 sip_ua_layer.c Unhandled forked Response msg 200/INVITE/cseq=11324 (rdata00A871BC) from 10.206.25.123:5060, response will be handed over to the first dialog > 11:41:16.851 dlg016B206C Received Response msg 200/INVITE/cseq=11324 (rdata00A871BC) > 11:41:16.851 dlg016B206C Route-set updated > 11:41:16.851 dlg016B206C Route-set frozen > 11:41:16.851 dlg016B206C Transaction tsx016B764C state changed to Terminated > 11:41:16.851 pjsua_app.c Call 0 state changed to CONNECTING > 11:41:16.851 inv016B206C SDP negotiation done, message body is ignored > 11:41:16.851 inv016B206C Received Response msg 200/INVITE/cseq=11324 (rdata00A871BC), sending ACK
