Sofia-SIP is an open-source SIP User-Agent library, compliant
with the IETF RFC3261 specification.
源代码在线查看： test18.txt
INVITE sip:user@company.com SIP/2.0 To: sip:j.user@company.com From: sip:caller@university.edu Call-ID: 0ha0isndaksdj@10.0.0.1 CSeq: 8 INVITE Via: SIP/2.0/UDP 135.180.130.133 Content-Type: application/sdp Content-Length: 138 v=0 o=mhandley 29739 7272939 IN IP4 126.5.4.3 c=IN IP4 135.180.130.88 m=audio 492170 RTP/AVP 0 12 m=video 3227 RTP/AVP 31 a=rtpmap:31 LPC asdpasd08asdsdk:;;asd a0sdjhg8a0''...'';;;;
