[OpenSIPS-Users] Wierd OS ACK to private IP

David Villasmil david.villasmil.work at gmail.com
Sun Aug 31 12:26:11 CEST 2008


Thanks for answering,

     Yes, I thought so. Thing is I can't do anything with the caller device,
it is an eyebam. I believe this has something to do with ALG. The only
problem on the whole sip exchange is this ACK... is there no way to modify
that on the server? Also, the IP the UAC puts on the ACK is ITS OWN ip..
VERY wierd. Can we work around that somehow?


Thanks a lot

David

On Sun, Aug 31, 2008 at 12:45 AM, Bogdan-Andrei Iancu <
bogdan at voice-system.ro> wrote:

> Hi David,
>
> The ACK for  200OK is end2end , so it is generated by the original caller
> and routed by proxies (without being regenerated) to the final callee.
>
> So, the private IP from the ACK's RURI is filled in by the caller device
> and not by OpenSIPS - Normally, the RURI of ACK must be the Contact from 200
> OK.
>
> Check this with the caller device.
>
> Regards,
> Bogdan
>
> David Villasmil wrote:
>
>> Hello all,
>>
>>
>>     I've got this very strange issue. A UAC behind NAT makes a call,
>> everything goes ok, but when OS sends the 200 OK for the INVITE, it ACK OS
>> with a PRIVATE IP has the domain! It is very strange... what does OS does?
>> it relays the ACK to THE PRIVATE IP,
>> which of course, doesn't exist. I've tried everything and can't seem to be
>> able to fix this problem, I hope someone can give me a hand.
>>
>>
>> NGREP: http://pastebin.com/m633730e2
>> OPENSER.CFG: http://pastebin.com/m33ed87d4
>>
>>
>> Thanks
>>
>>
>> David
>>
>> ------------------------------------------------------------------------
>>
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>>
>>
>
>
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