OK. I wish to monitor and record calls between a SIP endpoint and SIP Gateway. At the moment I am doing that by connecting the SIP endpoint and my machine to an ethernet hub so that I can see all the traffic. In the first instance I just need to correctly capture, read and interprete the SIP messages so that I can make an informed decision which RDP packets to capture.
Then I suppose I will have an even harder task capturing the RDP packets and joining both legs together (my coding skills is not great)! Lloydie T 2010/1/5 ik <ido...@gmail.com> > Hello, > > SIP first of all uses UDP most of the times (and rarely TCP) . > It only create a tunnel that other protocols such as RDP and SDP are going > inside. > > Can you explain a bit more what exactly do you wish to implement (i'm not > sure that I understand) ? > > Ido > > http://ik.homelinux.org/ > > > On Tue, Jan 5, 2010 at 15:08, lloyd thomas <lloydi...@googlemail.com>wrote: > >> Please forgive my ignorance regarding the project I am about to embark on. >> Need some advice on Lnet and capturing SIP RTP data to file. In the first >> instance I just need to work with the sip messages. I believe the SIP >> messages are similar to HTTP. I am using wireshark to understand how the SIP >> messages are processed, but I am not sure how to capture and read each frame >> (wireshark speak) using Lnet. >> >> (FYI: >> http://en.wikipedia.org/wiki/Session_Initiation_Protocol#SIP_network_elements >> ) >> >> For instance the following is from frame 12 (935 bytes) >> >> ---------------------------------------------------------------------------------------------- >> INVITE sip:1...@192.168.91.200 <sip%3a1...@192.168.91.200> SIP/2.0 >> Via:SIP/2.0/UDP 192.168.91.190:5060;rport;branch=z9hG4bK83570061 >> From:"Lloyd" <sip:1...@192.168.91.200 <sip%3a1...@192.168.91.200> >> >;tag=4b428357-2fa-1ec5d4e >> To:<sip:1...@192.168.91.200 <sip%3a1...@192.168.91.200>> >> Contact:"Lloyd" <sip:1...@192.168.91.190:5060;transport=UDP> >> Call-ID:83570000-4ce59...@192.168.91.200<call-id%3a83570000-4ce59...@192.168.91.200> >> Subject:sip phone call >> CSeq:2112045024 INVITE >> User-Agent:Mitel-5212-SIP-Phone 07.02.00.04 08000F24BEE5 >> Allow:INVITE,ACK,CANCEL,BYE,OPTIONS,REFER,NOTIFY,PRACK,UPDATE >> Allow-Events:talk,hold,conference >> Supported:timer,100rel,replaces >> Session-Expires: 1800 >> Min-SE: 90 >> Max-Forwards:70 >> Content-Type:application/sdp >> Content-Length:247 >> >> v=0 >> o=1000 1262650963 1262650962 IN IP4 192.168.91.190 >> s=SIP Call >> c=IN IP4 192.168.91.190 >> t=0 0 >> a=sendrecv >> m=audio 20036 RTP/AVP 0 8 18 96 >> a=rtpmap:0 PCMU/8000 >> a=rtpmap:8 PCMA/8000 >> a=rtpmap:18 G729/8000 >> a=rtpmap:96 telephone-event/8000 >> >> ----------------------------------------------------------------------------------------------- >> >> I get a response from the sip server on frame 13 (371 bytes) >> >> ---------------------------------------------------------------------------------------------- >> SIP/2.0 100 Trying >> Via: SIP/2.0/UDP 192.168.91.190:5060;rport=5060;branch=z9hG4bK83570061 >> From: "Lloyd" <sip:1...@192.168.91.200 <sip%3a1...@192.168.91.200> >> >;tag=4b428357-2fa-1ec5d4e >> To: <sip:1...@192.168.91.200 <sip%3a1...@192.168.91.200>> >> Call-ID: 83570000-4ce59...@192.168.91.200 >> CSeq: 2112045024 INVITE >> User-Agent: FreeSWITCH-mod_sofia/1.0.trunk-15355M >> Content-Length: 0 >> >> ----------------------------------------------------------------------------------------------- >> >> >> >> >> _______________________________________________ >> fpc-pascal maillist - fpc-pascal@lists.freepascal.org >> http://lists.freepascal.org/mailman/listinfo/fpc-pascal >> > > > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/mailman/listinfo/fpc-pascal >
_______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
