[Kamailio-Users] Checking the destination IP after dispatcher

[Daniel-Constantin Mierla]

Hello,

On 1/12/10 4:03 PM, Alex Balashov wrote:
> On 01/12/2010 06:35 AM, Daniel-Constantin Mierla wrote:
>> Hello,
>>
>> On 1/11/10 6:55 PM, Geoffrey Mina wrote:
>>> 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?
>>
>> actually ds_next_dst() populates the dst uri, which is accessible via
>> $du. Make sure ds_append_branch parameter is set to 0:
>> http://kamailio.org/docs/modules/3.0.x/modules_k/dispatcher.html#id2543896 
>>
>>
>> Then you call append_branch() after doing your IP check.
>>
>> If you do ds_next domain() then you get the new address in r-uri
>> (therefore $ru).
>>
>> To get access to dest uri domain, simply use: $dd.
>>
>> Your expression with transformations will give you the ip along with
>> protocol and uri parameters, if they are present in r-uri.
>
> Oh, so that's the difference between ds_next_dst() and ds_next_domain()?
yes.

>  I never did figure that out and always used ds_next_domain().  Thanks 
> Daniel!
>
> So, Kamailio operates on the dst_uri in the same way that a UA uses an 
> 'outbound proxy' setting - i.e. relays a call to RURI sip:user1 at domain 
> through proxy x.x.x.x?
yes.

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
* http://www.asipto.com/