6 Mar
2023
6 Mar
'23
4:51 p.m.
Hello,
own record-routes are to tell neighbouring SIP nodes where/how to send
the requests within dialog to the proxy. They are not about how the
proxy sends to next hop. It could be a (record-)route added by the next
hop, if that would be another proxy, but if it is an endpoint, then the
contact address says where/how the proxy has to send it.
If your endpoint is not able to preserve and use later the URI received
in Contact, then you have to workaround it with htable or dialog or
other config operations/conditions based on SIP headers.
Cheers,
Daniel
On 06.03.23 15:10, Benoit Panizzon wrote:
Hi Alex and Daniel
Thank you for the quick reply.
I have now also set double_rr = 2 but still no joy, same two RR header
are added as before.
modparam("rr", "enable_full_lr", 0)
modparam("rr", "append_fromtag", 1)
modparam("rr", "enable_double_rr", 2)
Situation, IP's and Usernames a bit mangled
CPE <TCP> Kamailio Reg <UDP> Kamailio Core <UDP> IC
CPE => Reg
INVITE sip:1111@dev-reg.example.com SIP/2.0
Via: SIP/2.0/TCP [CPEIP]:5060;branch=z9hG4bK9b3c29e0dad0e5b9
Route: <sip:[REGIP];transport=tcp;lr>
From: "John Doe" <sip:2222@dev-reg.example.com>;tag=295116bd1a873e35
To: <sip:1111@dev-reg.example.com>
Contact: <sip:2222@[CPEIP]:5060;transport=tcp>
Reg => Core
INVITE sip:1111@dev-reg.example.com SIP/2.0
Record-Route: <sip:[REGIP];r2=on;lr;ftag=295116bd1a873e35>
Record-Route: <sip:[REGIP];transport=tcp;r2=on;lr;ftag=295116bd1a873e35>
Via: SIP/2.0/UDP [REGIP];branch=z9hG4bKff2c.bdf51fa760a7fbf45d63cf2dc6149cd5.0;i=3
Via: SIP/2.0/TCP [CPEIP]:5060;branch=z9hG4bK9b3c29e0dad0e5b9
From: "John Doe" <sip:2222@dev-reg.example.com>;tag=295116bd1a873e35
To: <sip:1111@dev-reg.example.com>
Contact: <sip:2222@[CPEIP]:5060;transport=tcp>
Core => IC
INVITE sip:+41NPRN1111@[ICIP]:5060 SIP/2.0
Record-Route: <sip:[COREIP];lr;did=9fb.265>
Record-Route: <sip:[REGIP];r2=on;lr;ftag=295116bd1a873e35>
Record-Route: <sip:[REGIP];transport=tcp;r2=on;lr;ftag=295116bd1a873e35>
Via: SIP/2.0/UDP [COREIP];branch=z9hG4bKff2c.cd37a51708f805c3a86ad51b01b2ad43.0
Via: SIP/2.0/UDP [REGIP];branch=z9hG4bKff2c.bdf51fa760a7fbf45d63cf2dc6149cd5.0;i=3
Via: SIP/2.0/TCP [CPEIP]:5060;branch=z9hG4bK9b3c29e0dad0e5b9
From: "John Doe" <sip:2222@dev-reg.example.com>;tag=295116bd1a873e35
To: <sip:1111@dev-reg.example.com>
Contact: <sip:22222@[CPEIP]:5060;transport=tcp>
So what I understands, the last entry in the route set and the Contact
header state the last transport is TCP.
Omitting 180, prack, ack etc, as the don't cause a Problem. so right to BYE:
IC => CORE
BYE sip:2222@[CPEIP]:5060 SIP/2.0
Max-Forwards: 61
Route: <sip:[COREIP];lr;did=9fb.265>
Route: <sip:[REGIP];r2=on;lr;ftag=295116bd1a873e35>
Route: <sip:[REGIP];transport=tcp;r2=on;lr;ftag=295116bd1a873e35>
To: "John Doe" <sip:2222@dev-reg.examplel.com>;tag=295116bd1a873e35
From: <sip:+41NPRN1111@dev-reg.example.com>;tag=3887096572-1655837278
CSeq: 2 BYE
Via: SIP/2.0/UDP [ICIP]:5060;branch=z9hG4bKbf46cc2d5bdbf33cdb99543b438afb16
Indeed, the BYE does not specify transport=tcp, but the last entry in
the route does, so shouldn't that be used?
Core => Reg
BYE sip:2222@[CPEIP]:5060 SIP/2.0
Max-Forwards: 60
Route: <sip:[REGIP];r2=on;lr;ftag=295116bd1a873e35>
Route: <sip:[REGIP];transport=tcp;r2=on;lr;ftag=295116bd1a873e35>
To: "John Doe" <sip:2222@dev-reg.examplel.com>;tag=295116bd1a873e35
From: <sip:1111@dev-reg.example.com>;tag=3887096572-1655837278
CSeq: 2 BYE
Allow:
PUBLISH,MESSAGE,SUBSCRIBE,REFER,INFO,NOTIFY,REGISTER,OPTIONS,BYE,INVITE,ACK,CANCEL
Via: SIP/2.0/UDP [COREIP];branch=z9hG4bKd2cd.cc6c4cfb9e956d20b30c2c8dc4fb653d.0
Via: SIP/2.0/UDP [ICIP]:5060;branch=z9hG4bKbf46cc2d5bdbf33cdb99543b438afb16
Reg => CPE (transmitted via UDP!)
BYE sip:2222@[CPEIP]:5060 SIP/2.0
Max-Forwards: 59
To: "John Doe" <sip:2222@dev-reg.examplel.com>;tag=295116bd1a873e35
From: <sip:1111@dev-reg.example.com>;tag=3887096572-1655837278
CSeq: 2 BYE
Allow:
PUBLISH,MESSAGE,SUBSCRIBE,REFER,INFO,NOTIFY,REGISTER,OPTIONS,BYE,INVITE,ACK,CANCEL
Via: SIP/2.0/UDP [REGIP];branch=z9hG4bKd2cd.6a5e43e7f40c13088f744a6e8265f618.0
Via: SIP/2.0/UDP [COREIP];branch=z9hG4bKd2cd.cc6c4cfb9e956d20b30c2c8dc4fb653d.0
Via: SIP/2.0/UDP [ICIP]:5060;branch=z9hG4bKbf46cc2d5bdbf33cdb99543b438afb16
So indeed, the remote party in our IC does not specify transport=tcp in
the RURI. Does it have to do so?
Mit freundlichen Grüssen
-Benoît Panizzon-
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