[Kamailio-Users] Checking the destination IP after dispatcher

[Geoffrey Mina]

this was from a regular route[] block.  I ended up finding an old
thread which pointed me in the right direction.

I am currently using this to retrieve the destination IP POST dispatcher lookup:

$var(destIP) = $(ru{s.select,1,:}{s.select,1,@});

It seems to be working well.  Anything I should be aware of while
using this technique?

thanks.


On Mon, Jan 11, 2010 at 11:56 AM, Alex Balashov
<abalashov at evaristesys.com> wrote:
> 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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>
>
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