On Fri, Oct 2, 2009 at 1:02 PM, RobertT <siniypin at gmail.com> wrote: > Hi guys! > > I've encountered a problem with refresher INVITE message. > In short it breaks established call, causing media transport to close, but > the session itself is OK. Here is an example: > I've got an application calling into the conference server. This server > accepts the call and establishes the connection. This client can hear the > sound coming from server form about a minute, after that the sound suddenly > breaks and neither he hear anything nor he can be heard by other > participants of conference. Below is a short piece of sip trace: > > INVITE sip:1.conference.dw at xx.xxx.x.xx:5080;transport=TCP SIP/2.0 > .. > > SIP/2.0 100 Trying > .. > > SIP/2.0 407 Proxy Authentication Required > .. > > ACK sip:1.conference.dw at xx.xxx.x.xx:5080;transport=TCP SIP/2.0 > .. > > SIP/2.0 100 Trying > .. > > SIP/2.0 183 Session Progress > .. > > This is the answer from server with refresher lines in SDP > SIP/2.0 200 OK > .. > Session-Expires: 120;refresher=uas > Min-SE: 120 > .. > > ACK sip:1.conference.dw at xx.xxx.x.xx:5080;transport=tcp SIP/2.0 > .. > > Finally, the next INVITE message from server causes media stream to close > Processing incoming message: Request msg INVITE/cseq=121095711 > (rdata07810910) > RX 978 bytes Request msg INVITE/cseq=121095711 (rdata07810910) from tcp > xx.xxx.x.x:5080: > INVITE sip:1001 at 87.184.52.45:64935;transport=tcp SIP/2.0 > ... > Session-Expires: 120;refresher=uac > Min-SE: 120 > .. > > ... > m=audio 27322 RTP/AVP 103 101 > a=rtpmap:103 speex/16000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-16 > a=silenceSupp:off - - - - > a=ptime:20 > > dlg0783D1AC? Received Request msg INVITE/cseq=121095711 (rdata07810910) > tsx07845D7C? Transaction created for Request msg INVITE/cseq=121095711 > (rdata07810910) > tsx07845D7C? Incoming Request msg INVITE/cseq=121095711 (rdata07810910) in > state Null > tsx07845D7C? State changed from Null to Trying, event=RX_MSG > dlg0783D1AC? Transaction tsx07845D7C state changed to Trying > inv0783D1AC? Got SDP offer in Request msg INVITE/cseq=121095711 > (rdata07810910) > Call 0: received updated media offer > endpoint? Response msg 200/INVITE/cseq=121095711 (tdta07846520) created > inv0783D1AC? SDP negotiation done, status=0 > Call 0: remote NAT type is 0 (Unknown) > > strm0784C834 > JB summary: > ?? size=2 prefetch=3 > ?? delay (min/max/avg/dev)=20/260/55/50 ms > ?? burst (min/max/avg/dev)=1/12/2/0 frames > ?? lost=35 discard=0 empty=852 > > Media session for call 0 is destroyed > pjmedia_rtp_session_init: ses=0784D580, default_pt=103, ssrc=0xd291c26 > pjmedia_rtp_session_init: ses=0784D9F4, default_pt=103, ssrc=0xd291c26 > Stream strm0784C394 created > Encoder stream started > strm0784C394? Decoder stream started > Media updates, stream #0: speex (sendrecv) > > inv0783D1AC? Sending Response msg 200/INVITE/cseq=121095711 > (tdta07846520) > dlg0783D1AC? Sending Response msg 200/INVITE/cseq=121095711 > (tdta07846520) > tsx07845D7C? Sending Response msg 200/INVITE/cseq=121095711 (tdta07846520) > in state Trying > TX 801 bytes Response msg 200/INVITE/cseq=121095711 (tdta07846520) to tcp > 74.208.167.44:5080: > SIP/2.0 200 OK > ... > > Any help regarding how to resolve this problem will be appretiated! > I don't see any problems here. The media is restarted (i.e. destroyed and recreated) due to new offer. It should be running normally. -Benny
