[OpenSIPS-Users] Broken Loose Routing?

[Bogdan-Andrei Iancu]

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

Brett Nemeroff wrote:
> On Thu, Oct 30, 2008 at 8:44 AM, Iñaki Baz Castillo <ibc at aliax.net 
> <mailto:ibc at aliax.net>> wrote:
>
>     2008/10/30 Brett Nemeroff <brett at nemeroff.com
>     <mailto:brett at nemeroff.com>>:
>     > Hey All,I'm having a problem with a multi-homed proxy. It
>     operates on two
>     > IPs, one is an internal address and the other is an external
>     public IP.
>     >
>     > The call I'm having trouble with goes like this:
>     >
>     > Call from PSTN->SIP gateway on internal network TO OpenSIPs
>     >
>     > OpenSIPs uses LCR + RTProxy and sends call to Provider
>     >
>     > Call is established just fine.
>     >
>     > Hangup on Provider side. Provider sends OpenSIPs BYE
>     >
>     > OpenSIPs sends BYE to INTERNAL IP (why?)
>
>     If the BYE from providers arrives correctly to OpenSIPS it means that
>     loose routing is working correctly.
>     When OpenSIPS receives that in-dialog request (BYE) it must route it
>     to the address indicated in RURI. What is that RURI?
>
>     Note also that the RURI in the BYE is the URI in the Contact of the
>     INVITE, and if there NAT issues the proxy must change
>     (fix_natted_contact) that Contact and replace the private IP:port with
>     the received IP:port.
>
>     So, show a capture to find the problem.
>
>
>
> Yes, the BYE arrives just fine.. it's that it isn't relaying it with 
> loose routing right. OpenSIPs is sending it's own internal address 
> instead of sending it to the other party.. The 200 OK and ACKs all 
> work just fine.. just the BYE is broken.
>
> I tried to post the full trace, but it was too long (41K with a limit 
> of 40K) So I stuck it in a pastebin: http://www.pastebin.ca/1240174
> The R-URI in the BYE from the provider looks good.. But it comes with 
> route headers that show both addresses from the double RR. Which I 
> thought was right. I was under the assumption that the loose routing 
> should inspect the route header and skip routes that are itself?
>
> Please note, the provider isn't sending the BYE to the internal 
> address. The provider sends it to OpenSIPs Public address. Which is 
> correct.. but then OpenSIPs kills the dialog and relays the BYE to 
> it's OWN internal address. Which of course, there is no longer a 
> dialog since it was killed and it replies "404 Not here".
>
> Any ideas?
>
>
>
>  
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