ACK to 200 OK should be sent based on the route set, not VIA. Regards, _____________ Roman Shpount
On Sun, Feb 10, 2019 at 7:48 PM David Cunningham <dcunning...@voisonics.com> wrote: > 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 > _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
