[OpenSIPS-Users] Broken Loose Routing?

[Bogdan-Andrei Iancu]

Brett Nemeroff wrote:
> On Thu, Oct 30, 2008 at 9:34 AM, Bogdan-Andrei Iancu 
> <bogdan at voice-system.ro <mailto:bogdan at voice-system.ro>> wrote:
>
>     Hi Brett,
>
>     Yes, the BYE is sent again to your opensips, because, as Inaki
>     said, the incoming BYE has a bogus RURI - it has to be the contact
>     from the INVITE, but you can see it actually points to our own
>     server. This confuses opensips which thinks the previous hop was a
>     strict router.
>
>     Check with the with the next public hope as they screw up the
>     INVITE contact (which propagates into BYE RURI)
>
>     Regards,
>     Bogdan
>
>
> Bogdan,
> The next public hop is the provider. Are you saying that I'm sending 
> them an INVITE with a bad Contact header?
Not at all - I;m saying that the provider is mesing up with the INVITE's 
contact. You cannot see this, but this is my wild guess, as you must get 
this contact back into the BYE RURI.
> I'm not sure where you are saying the bad header is.. The contact 
> header I send to them in the INVITE looks like this:
>
>   1.
>       U 62.175.182.141:5060 -> 195.62.163.131:5060
>   2.
>       INVITE sip:17475551212 at 195.62.163.131:5060;transport=udp SIP/2.0.
>   3.
>       Record-Route:
>       <sip:62.175.182.141;r2=on;lr;ftag=1c2145666146;did=fe6.729dae35>.
>   4.
>       Record-Route:
>       <sip:10.10.65.141;r2=on;lr;ftag=1c2145666146;did=fe6.729dae35>.
>   5.
>       Via: SIP/2.0/UDP 62.175.182.141;branch=z9hG4bKac82.22c28106.0.
>   6.
>       Via: SIP/2.0/UDP 10.10.67.190;branch=z9hG4bKac2145676337.
>   7.
>       Max-Forwards: 69.
>   8.
>       From: <sip:15125551234 at dvm2-vxgw-1.sfba.mydomain.net
>       <http://sfba.mydomain.net>>;tag=1c2145666146.
>   9.
>       To: <sip:17475551212 at 10.10.65.141>.
>  10.
>       Call-ID: 214566535627102008205744 at 10.10.67.190.
>  11.
>       CSeq: 1 INVITE.
>  12.
>       Contact: <sip:15125551234 at 10.10.67.190:5060>.
>  13.
>       Supported:
>       em,100rel,timer,replaces,path,early-session,resource-priority.
>  14.
>       Allow:
>       REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
>  15.
>       Remote-Party-ID:
>       <sip:15125551234 at 10.10.65.141>;party=calling;privacy=off;screen=no;npi=0;ton=0.
>  16.
>       Remote-Party-ID:
>       <sip:17475551212 at 10.10.65.141>;party=called;npi=0;ton=0.
>  17.
>       x-channel: ds/ds1-5/6;IP=10.10.67.190.
>  18.
>       User-Agent: dvm2-vxgw-1/v.5.20A.048.006.
>  19.
>       Content-Type: application/sdp.
>  20.
>       Content-Disposition: session.
>  21.
>       Content-Length: 271.
>
> Contact: <sip:15125551234 at 10.10.67.190:5060> Looks right to me? Is it not?
Not it is not - it has 2 Route hdr that contain the RR headers from 
INVITE ; the RURI has to be the INVITE's contact, but you notice here 
your own IP!
>
> Then the BYE from the Provider has a RURI that looks like this:
>
>   1.
>       U 195.62.163.131:5060 -> 62.175.182.141:5060
>   2.
>       BYE sip:15125551234 at 62.175.182.141:5060 SIP/2.0.
>   3.
>       Record-Route: <sip:195.62.163.131;lr;ftag=BDA2FF96-481D6819>.
>   4.
>       Via: SIP/2.0/UDP 195.62.163.131;branch=z9hG4bKac82.9acd04c3.0.
>   5.
>       Via: SIP/2.0/UDP 76.235.229.126;branch=z9hG4bKf2ef284024BE6DBB.
>   6.
>       From: <sip:17475551212 at 10.10.65.141>;tag=BDA2FF96-481D6819.
>   7.
>       To: <sip:15125551234 at dvm2-vxgw-1.sfba.mydomain.net
>       <http://sfba.mydomain.net>>;tag=1c2145666146.
>   8.
>       Route:
>       <sip:62.175.182.141;r2=on;lr;ftag=1c2145666146;did=fe6.729dae35>,
>       <sip:10.10.65.141;r2=on;lr;ftag=1c2145666146;did=fe6.729dae35>.
>   9.
>       CSeq: 1 BYE.
>  10.
>       Call-ID: 214566535627102008205744 at 10.10.67.190.
>  11.
>       Contact: <sip:17475551212 at 76.235.229.126>.
>  12.
>       User-Agent: PolycomSoundPointIP-SPIP_320-UA/2.1.1.0037.
>  13.
>       Max-Forwards: 69.
>  14.
>       Content-Length: 0.
>  15.
>       RemoteIP: 76.235.229.126.
>  16.
>       P-hint: rr-enforced.
>
>
Regards,
Bogdan