Hi, using Opensips 1.6.2. We are using Opensips as outbound proxy using TLS
just for final hop between UAC and Opensips. Other legs of the call will be
udp. We have a test set up with Sipgate (but same occurs with other providers)
where an incoming INVITE to the UAC via opensips results in 200ok generated by
UAC and then the ACK coming back from sipgate server is routed over udp
connection as opposed to tls, opensips seems to be ignoring the Route header in
the ACK
If the contact header has a sips uri opensips will route it correctly but some
voip providers do not like sips uri in contact header and we are only using tls
for the final hop so are not using a sips uri for contact header.
Do we have our understanding of the spec wrong or should opensips be routing
according to the route header or should it use the contact header.
Opensips ip 172.230.135.190 UAC ip 81.13.94.206
U 217.10.79.23:5060 -> 172.230.135.190:5060
ACK sip:9082...@81.13.94.206:59053 SIP/2.0.
Via: SIP/2.0/UDP 217.10.79.23:5060;branch=z9hG4bK59c7.0bbb2877.2.
Via: SIP/2.0/UDP 172.20.40.4;branch=z9hG4bK59c7.0bbb2877.2.
Via: SIP/2.0/UDP
217.10.79.23:5060;received=217.10.68.226;branch=z9hG4bK6a423428.
Via: SIP/2.0/UDP 217.10.66.71:5060;branch=z9hG4bK6a423428;rport=5060.
Route:
<sip:172.230.135.190;r2=on;lr=on;ftag=as126bf37e>,<sip:172.230.135.190:5061;transport=tls;r2=on;lr=on;ftag=as126bf37e>.
From: "anonymous" <sip:anonym...@sipgate.co.uk>;tag=as126bf37e.
To: <sip:00441519082...@sipgate.co.uk>;tag=94gc3N42r9X5D.
Contact: <sip:anonym...@217.10.66.71>.
Call-ID: 181c48541a5ad00d04322ccc0752c...@sipgate.co.uk.
CSeq: 102 ACK.
Max-Forwards: 67.
Content-Length: 0.
X-hint: rr-enforced.
.
U 172.230.135.190:5060 -> 81.13.94.206:59053
ACK sip:9082...@81.13.94.206:59053 SIP/2.0.
Via: SIP/2.0/UDP 172.230.135.190;branch=z9hG4bK59c7.6f77cf2.3.
Via: SIP/2.0/UDP
217.10.79.23:5060;rport=5060;received=217.10.79.23;branch=z9hG4bK59c7.0bbb2877.2.
Via: SIP/2.0/UDP 172.20.40.4;branch=z9hG4bK59c7.0bbb2877.2.
Via: SIP/2.0/UDP
217.10.79.23:5060;received=217.10.68.226;branch=z9hG4bK6a423428.
Via: SIP/2.0/UDP 217.10.66.71:5060;branch=z9hG4bK6a423428;rport=5060.
From: "anonymous" <sip:anonym...@sipgate.co.uk>;tag=as126bf37e.
To: <sip:00441519082...@sipgate.co.uk>;tag=94gc3N42r9X5D.
Contact: <sip:anonym...@217.10.66.71>.
Call-ID: 181c48541a5ad00d04322ccc0752c...@sipgate.co.uk.
CSeq: 102 ACK.
Max-Forwards: 66.
Content-Length: 0.
X-hint: rr-enforced.
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