[SR-Users] RTPproxy in bridge mode question

[Klaus Darilion]

The best would be to tell the providers that they should fix their systems.

As a workaround you could try encode/decode contact functions:
http://sip-router.org/docbook/sip-router/branch/master/modules_k/siputils/siputils.html#id2878034

IIRC these functions may cause strange results if you do other contact 
rewriting too (e.g. fix_nated_contact).

regards
klaus

Am 30.04.2010 18:32, schrieb Uriel Rozenbaum:
> Guys,
>
> I'm successfully using a Kamailio + RTPproxy setup in bridge mode with
> most of my Gateways. My setup includes two different interfaces one with
> a public IP and teh other with the private IP.
>
> Now I'm facing some slight issue. Some providers won't accept my calls
> (or calls will have some strange behavior) if the Contact header has an
> IP out of immediate range.
>
> I tried to use fix_nated_contact() function but as per my topology, this
> function will not change the contact header because the IP is already
> the one on the interface.
>
> Example:
> U 192.168.200.X:5060 -> 192.168.200.Y:5060
> INVITE sip:111160911097 at 192.168.200.Y SIP/2.0.
> Via: SIP/2.0/UDP 192.168.200.X:5060;branch=z9hG4bK096baacc;rport.
> From: "Uriel Rozenbaum" <sip:60911100 at 192.168.200.X>;tag=as32794d5e.
> To: <sip:111160911097 at 192.168.200.Y>.
> Contact: <sip:60911100@*192.168.200.X*>.
>
> U 200.A.A.A:5060 -> 200.B.B.B:5060
> INVITE sip:898960911097 at 200.B.B.B SIP/2.0.
> Record-Route: <sip:200.A.A.A;r2=on;lr=on;ftag=as32794d5e>.
> Record-Route: <sip:192.168.200.Y;r2=on;lr=on;ftag=as32794d5e>.
> Via: SIP/2.0/UDP 200.A.A.A;branch=z9hG4bK5222.14fbf4f7.0.
> Via: SIP/2.0/UDP
> 192.168.200.X:5060;received=192.168.200.X;branch=z9hG4bK096baacc;rport=5060.
> From: "Uriel Rozenbaum" <sip:60911100 at 192.168.200.X>;tag=as32794d5e.
> To: <sip:111160911097 at 192.168.200.Y>.
> Contact: <sip:60911100@*192.168.200.X*>.
>
> Is there any way to let know Kamailio the outgoing IP I'll be using and
> fix the contact accordingly?
> I can trigger this change after I know the destination IP.
>
> Thanks!
> Uriel
>
>
>
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