Hi all, I have a quick question regarding the usage of the Contact field in 401 message. In the trace here you can see that in the 401 the contact field from the invite is just send back. So for my understanding the ack to the 401 is send then to the own IP address in such a case. Is there any rule for that specific behaviour?
INVITE sip:[EMAIL PROTECTED] SIP/2.0 Max-Forwards: 50 Via: SIP/2.0/UDP 172.20.16.1:5060;rport;branch=z9hG4bK23268366631621974202502 From: <sip:[EMAIL PROTECTED]>;tag=723776519979065179735928398741 To: <sip:[EMAIL PROTECTED]> Call-ID: [EMAIL PROTECTED] CSeq: 1 INVITE Contact: <sip:[EMAIL PROTECTED]> User-Agent: TELES.VoIPBOX FX 13.0b 885 Allow: INVITE,ACK,CANCEL,BYE,UPDATE,REGISTER,PRACK,INFO,NOTIFY,REFER Timestamp: 1175605035 Content-Type: application/sdp Content-Length: 520 v=0 o=- 6 1 IN IP4 172.20.16.1 s=- c=IN IP4 172.20.16.1 t=0 0 m=audio 29000 RTP/AVP 18 18 18 18 4 0 8 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=ptime:20 a=rtpmap:18 G729A/8000 a=fmtp:18 annexb=no a=ptime:20 a=rtpmap:18 G729B/8000 a=fmtp:18 annexb=yes a=ptime:20 a=rtpmap:18 G729AB/8000 a=fmtp:18 annexb=yes a=ptime:20 a=rtpmap:4 G723/8000 a=fmtp:4 annexa=yes a=ptime:60 a=rtpmap:0 PCMU/8000 a=ptime:20 a=rtpmap:8 PCMA/8000 a=ptime:20 SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 172.20.16.1:5060;rport;branch=z9hG4bK23268366631621974202502 From: <sip:[EMAIL PROTECTED]>;tag=723776519979065179735928398741 To: <sip:[EMAIL PROTECTED]>;tag=GR52RWG346-34 Call-ID: [EMAIL PROTECTED] CSeq: 1 INVITE Contact: <sip:[EMAIL PROTECTED]> WWW-Authenticate: Digest realm="192.168.1.1", nonce="1D9C86B49DD0C77FB73188939DA7E174", opaque="9CCC512F6BCF46A90987581E8F4FCCD9", algorithm=md5 User-Agent: TELES.VoIPBOX FX 13.0b 885 Timestamp: 1175605035 Content-Length: 0 Thanks in Advance Joerg _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
