[OpenSIPS-Users] Broken Loose Routing?

[Bogdan-Andrei Iancu]

Hi Brett,

Not sure you can do anything about - they detect you as behind nat 
because of the private IP in Contact....

What you can do is to try  (before sending the INVITE to the provider) 
to save the current contact IP in a uri param and to replace the contact 
IP with your own....Something like maddr

When you get a sequential request , before loose_route(), replace the 
RURI IP with the value from param.

Something like:

INVITE  :    Contact: <sip:user at privIP> -> Contact: 
<sip:user at server_pub_IP;maddr=privIP>

BYE: RURI= sip:user at server_pub_IP;maddr=privIP  -> RURI=sip:user at privIP

Regards,
Bogdan

Brett Nemeroff wrote:
> We're actually getting this problem sending calls to multiple 
> providers.. is there possibly anything I'm dong that could be causing 
> this?
> Thanks all,
> Brett
>
>
>
> On Thu, Oct 30, 2008 at 11:08 AM, Alex Hermann <alex at speakup.nl 
> <mailto:alex at speakup.nl>> wrote:
>
>     On Thursday 30 October 2008, Iñaki Baz Castillo wrote:
>     > 2008/10/30 Brett Nemeroff <brett at nemeroff.com
>     <mailto:brett at nemeroff.com>>:
>     > > Please note, the provider isn't sending the BYE to the
>     internal address.
>     > > The provider sends it to OpenSIPs Public address. Which is
>     correct..
>     >
>     > No, that's not correct, the RURI of the BYE from provider *MUST* be
>     > the same as the RURI in the INVITE Contact the provider received.
>     > The BYE is sent back to the public IP, of course, but it's routed
>     > thanks to "Route" header (loose route).
>     >
>     > This is the INVITE OpenSIPS sends to the provider:
>     >
>     > U 62.175.182.141:5060 <http://62.175.182.141:5060> ->
>     195.62.163.131:5060 <http://195.62.163.131:5060>
>     > INVITE sip:17475551212 at 195.62.163.131:5060;transport=udp SIP/2.0.
>     > Contact: <sip:15125551234 at 10.10.67.190:5060
>     <http://sip:15125551234@10.10.67.190:5060>>.
>     >
>     > And this is the BYE the provider sends to OpenSIPS:
>     >
>     > BYE sip:15125551234 at 62.175.182.141:5060
>     <http://sip:15125551234@62.175.182.141:5060> SIP/2.0.
>
>     Most probably the provider does wrong NAT detection. ie it does
>     the equivalent
>     of:
>
>     if (nat_uac_test("1")) {
>            fix_nated_contact();
>     }
>     t_relay();
>
>
>     --
>     Met vriendelijke groet,
>
>
>     Alex Hermann
>     SpeakUp
>     T: 088-SPEAKUP (088-7732587)
>     F: 088-7732588
>
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