[Kamailio-Users] In-dialog request correlation without loose routing?

[Alex Balashov]

Alex Balashov wrote:
> Daniel-Constantin Mierla wrote:
>>
>> On 10/16/08 22:07, Alex Balashov wrote:
>>> Ovidiu Sas wrote:
>>>
>>>  
>>>>> If it is loose_route() that I need to correlate subsequent in-dialog
>>>>> requests, why?  As you said, if no RR cookies are being used, why 
>>>>> should the
>>>>> proxy care about the Route: header?
>>>>>       
>>>> I don't know how to put it better in other words :(
>>>> The proxy doesn't care about the Route header.
>>>> The proxy uses the record routing mechanism as a hook into the dialog
>>>> internals and the matching is done inside the dialog module.  After
>>>> that, the dialog module will chose the matching mechanism.
>>>>     
>>> I got that.
>>>
>>> So, why does matching not work unless I call loose_route(), regardless 
>>> of match mode?  :-)
>>>   
>> the matching is triggered by execution of Route processing callbacks 
>> that happen only by calling loose_route().
>>
>> The dialog module registers a function to be called when the Route 
>> header is processed. In this function the dialog module does the 
>> matching algorithm. To get independent of that, for matching mode 2, a 
>> function should be exported by dialog for explicit call in the script, 
>> something like:
>>
>> if(dialog_match())
>> {
>> ....
>> }
>>
>> Cheers,
>> Daniel
> 
> That's what I figured;  there was something in the callback architecture 
> that caused the module to otherwise not see the requests.
> 
> Cool - that explains it!
> 

BTW, I do think it would be a good idea for the dialog module to export 
these functions directly into the script symbols so they can be called 
that way.  I do not like to do loose routing unnecessarily / when I have 
no use for it.

-- Alex

-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599