Hello, Could someone please confirm the correct routing of an ACK? A device receives the following 200 OK. Should the ACK it sends in response be sent to the first Via address? I believe that sending it to the Contact address is incorrect? If anyone happens to know the part of the RFC that specifies this it would be very helpful. Thank you in advance.
SIP/2.0 200 OK Via: SIP/2.0/TLS xx.xx.102.10:5061;rport=51582;branch=z9hG4bK85341894 Record-Route: <sip:yy.yy.246.146;r2=on;lr=on> Record-Route: <sip:yy.yy.246.146:5061;transport=tls;r2=on;lr=on> From: Test <sip:111...@sip.example.com>;tag=Nf5GGRC3g6plN!8si1807E2D3ad0440e To: <sip:222...@sip.example.com:5061>;tag=as448937d5 Call-ID: 105176...@xx.xx.102.10 CSeq: 5295 INVITE Server: ES8 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE Supported: replaces, timer Contact: <sip:222...@yy.yy.246.146:5070> Content-Type: application/sdp Content-Length: 337 -- David Cunningham, Voisonics Limited http://voisonics.com/ USA: +1 213 221 1092 New Zealand: +64 (0)28 2558 3782 _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
