[SR-Users] RTPproxy in bridge mode question

[Uriel Rozenbaum]

Thanks Guys, I'll be trying this. Do you know if I can use AVP or vars as
parameters for these functions?
encode_contact(encoding_prefix)
decode_contact()

On Mon, May 3, 2010 at 5:47 AM, Klaus Darilion <klaus.mailinglists at pernau.at
> wrote:

> 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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>>
>
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