[Kamailio-Users] Checking the destination IP after dispatcher

[Alex Balashov]

Branch route?

On 01/11/2010 11:50 AM, Geoffrey Mina wrote:

> What pseudo variable would i check after running ds_next_dst() to
> check the IP we are about to forward the INVITE to?
>
> Basically I want to have a check for $si == [something] to ensure I am
> not about to send the INVITE to the same UI which just requested it.
>
> While I have your attention, I may as well see if anyone has a better
> solution for what I am trying to accomplish:
>
> I am doing this because asterisk can't handle a hairpin scenario and I
> need to generate two distinct calls in my network, so I figure i'll
> just forward the request to another server in the network to deal with
> this.
>
> INVITE from PSTN -->  Kamailio -->  Asterisk#1 [Asterisk#1 needs to
> create a new session, but stay on-net] -->  INVITE from Asterisk#1 to
> Kamailio -->  [Dispatcher] -->  INVITE from Kamailio to Asterisk#2
>
> This would basically create 3 legs of the call, which is what I want
>
> PSTN -->  Asterisk#1 -->  Asterisk#2
>
> I would prefer if Asterisk#1 could just INVITE to LocalHost, but that
> doesn't seem to be allowed.  Not sure if that's a limitation of SIP or
> Asterisk...
>
> Thanks!
>
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-- 
Alex Balashov - Principal
Evariste Systems
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