[OpenSIPS-Users] Public IP dispatcher and private ip presence servers

[Bogdan-Andrei Iancu]

Hi Surya,

The correct way to do it is to keep the dispatcher in the loop, as it is 
the one able to bridge the private and public networks.

IF you do record_route() for the SUBSCRIBE, you will notice a double RR 
(describing the interface changing on the dispatcher). You do not need 
any advertising here. just give it a try, it will work.

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 19.10.2016 18:31, surya wrote:
> Hi,
>
> I am experimenting with the scenario where we have a dispatcher to load
> balance between the presence servers. Only dispatcher has the public IP
> available. Clients will be having public IP too.
>
> Currently, what happens is SUBSCRIBE - OK flows pass thru the dispatcher
> while the NOTIFY goes to the client directly but the 200 OK from the client
> goes nowhere as it sends on the private IP of the presence server.
>
> I am not sure what to do. Two things come to my mind: 1.) Advertised address
> 2.) Record-route.
>
> If  my understanding is correct using record-route, all subs-notify-200 will
> go thru dispatcher and dispatcher will route the response 200 to correct
> server and by using advertised address, the via in NOTIFY will change to the
> given address (I believe that should be of dispatcher) but then how
> dispatcher will route the 200 response to correct server.
>
> Please help me understand and suggest what is the correct way of doing this.
>
> Thanks,
> Surya
>
>
>
>
>
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