> This via with rport=5060 is the one generated by server > on b-side . and we are talking about cancel the dialog > on a-side.
You might want to look at the call flow again. Voip1:10.32.140.122 INVITE sip:[email protected];transport=udp SIP/2.0 From: "AHTV Ric 1"<sip:[email protected]>;tag=13e7858-7a8c200a-13c4-5506-38-3625c56-38 To: <sip:[email protected];transport=udp> Call-ID: 14800c0-7a8c200a-13c4-5506-38-1b91bc30-38 CSeq: 1 INVITE Via: SIP/2.0/UDP 10.32.140.122:5060;rport;branch=z9hG4bK-38-dc39-6b4deb27 <snip> Voip-1 Sends Cancel CANCEL sip:[email protected];transport=udp SIP/2.0 From: "AHTV Ric 1"<sip:[email protected]>;tag=13e7858-7a8c200a-13c4-5506-38-3625c56-38 To: <sip:[email protected];transport=udp> Call-ID: 14800c0-7a8c200a-13c4-5506-38-1b91bc30-38 CSeq: 1 CANCEL Via: SIP/2.0/UDP 10.32.140.122:5060;rport;branch=z9hG4bK-38-dc39-6b4deb27 Max-Forwards: 70 Supported: 100rel,timer,replaces Content-Length: 0 Server responds with 200 Ok SIP/2.0 200 OK Via: SIP/2.0/UDP 10.32.140.122:5060;rport;branch=z9hG4bK-38-dc39-6b4deb27;rport=5060 From: "AHTV Ric 1"<sip:[email protected]>;tag=13e7858-7a8c200a-13c4-5506-38-3625c56-38 To: <sip:[email protected];transport=udp>;tag=2406394696 Call-ID: 14800c0-7a8c200a-13c4-5506-38-1b91bc30-38 CSeq: 1 CANCEL Contact: <sip:10.32.128.20> Allow: INVITE,ACK,CANCEL,BYE,REFER,OPTIONS,NOTIFY,SUBSCRIBE,PRACK,MESSAGE,INFO Allow-Events: dialog Supported: gruu Content-Length: 0 Server sends 487 SIP/2.0 487 Request Terminated Via: SIP/2.0/UDP 10.32.140.122:5060;rport;branch=z9hG4bK-38-dc39-6b4deb27;rport=5060 From: "AHTV Ric 1"<sip:[email protected]>;tag=13e7858-7a8c200a-13c4-5506-38-3625c56-38 To: <sip:[email protected];transport=udp>;tag=2406394696 Call-ID: 14800c0-7a8c200a-13c4-5506-38-1b91bc30-38 CSeq: 1 INVITE Contact: <sip:10.32.128.20> Allow: INVITE,ACK,CANCEL,BYE,REFER,OPTIONS,NOTIFY,SUBSCRIBE,PRACK,MESSAGE,INFO Allow-Events: dialog Supported: gruu Content-Length: 0 Voip1 is not responding to 487 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
