[SR-Users] SIP Routing Logic in Lua

[Daniel-Constantin Mierla]

On 11/19/10 8:27 PM, Iñaki Baz Castillo wrote:
> 2010/11/17 Daniel-Constantin Mierla<miconda at gmail.com>:
>> I made an easy-to-do tutorial where all the SIP routing logic is implemented
>> in a Lua script (including authentication, accounting, registrar, user
>> location). You can read it at:
>>
>> http://asipto.com/u/h
> sr.tm.t_check_trans()
> sr.sl.send_reply(404, "Not here")
> sr.tm.t_relay()
> sr.rr.loose_route()
> [...]
>
> I'd strongly would like that kamailio config file uses namespaced
> functions as well, as it's an ellegant way to realize of which module
> each function belongs to.
> There are more and more modules and new functions, and it's becoming
> rather difficult to understand a kamailio/SR script with so many
> functions sharing the same/unique "namespace".
>
>    function_name    =>     module.function_name
>
> It's cool, it's easy, it's sexy :)
This should not be that complex, there is no function name that has '.' 
in order to have current conflicts to solve. My concern is related to 
modules with very long names, but seems that most of such cases do not 
export lot of functions (e.g., presence_*).

Alternative is to introduce a short id for modules, eg,:

ps => presence
rp => rtpproxy

to be used only when module name is too long.

Btw, this option can speed up a bit the startup, as now resolving a 
function in config means going through all modules and all functions in 
a row. Knowing the module, then the search will be only within the list 
of functions exported by that module. Just a side note, not big 
influence over all, this being done at startup.

Cheers,
Daniel

>
> BTW the article showing the LUA usage is brilliant :)
>
>
>

-- 
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Trainings
Nov 22-25, 2010, Berlin, Germany
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com