[OpenSIPS-Users] A Dynamic List of Gateways

[Bogdan-Andrei Iancu]

Hi Shaahin,

Why not simply using the Dynamic Routing module :
         http://www.opensips.org/html/docs/modules/1.8.x/drouting.html

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 08/30/2012 03:07 PM, Shaahin Madani wrote:
>
> Greetings,
>
>
> In my OpenSIPS server, when I receive an INVITE requests, I need to 
> (1) consult an external database to get a list of gateways, and (2) 
> send the request to those gateways, in order, starting from the first 
> and trying the next only if the current one fails (e.g. irresponsive, 
> offline, busy, etc).
>
>
> I understand that forwarding calls to a certain gateway can be 
> achieved using the rewritehostport(…)function; and that 
> prefix-/caller-/group-/time-/priority-based dynamic routing can be 
> addressed using the DROUTINGmodule. However, in my system what 
> actually is “dynamic” is the gateway list itself, which is therefore 
> not a subset of the dr_gatewaystable. In fact, OpenSIPS has no idea 
> about the list of gateways due to the complex business-logic involved. 
> The dynamic gateway list, nevertheless, needs to be treated identical 
> to an ordinary one, i.e. prefix, time and priority of gateways must be 
> considered.
>
>
> Solving this problem, I assume, requires either writing a whole new 
> DROUTINGmodule, which wraps the necessary business-logic and consults 
> the external database; or wrapping the business-logic in a Perl script 
> that is called from the routing script (opensips.cfg). Now, there are 
> two issues that I would like to know your expert opinion about:
>
>
> 1. Is my solution, i.e. using the Perl script to wrap the business 
> logic and queries to the external database, the best possible way to 
> do this?
>
>
> 2. As the list of gateways is dynamic, is there any way to leverage 
> the facilities offered by the DROUTINGmodule? Specifically, can I 
> somehow get the list of gateways from the Perl script and pass it to 
> the DROUTINGmodule for prefix-/time-/priority-based routing, or 
> probing, purposes?
>
>
> Regards,
>
> Shaahin Madani
>
>
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