[SR-Users] Question about rate limiting a subscriber

[Henning Westerholt]

On Thursday 24 June 2010, Stagg Shelton wrote:
> I would like to limit on a subscriber by subscriber basis the amount of
> outgoing calls per second that they can do.  I am reading through the
> ratelimit module documentation, but haven't been able to determine if I
> can use it to limit one particular subscriber outgoing activity.  I have
> also looked at the pike module, and think that I may be able to use it
> in order to limit calls per second by IP.  Does anyone have any
> recommendations, suggestions, or examples that can be used to control
> the calls per second based on the kamailio subscriber name.

Hi Stagg,

another idea to throttle specific/ all customers to a certain load would be to 
use the dialog profiles functionality. This would allows you to limit 
concurrent dialogs, albeit its more heavywight (on CPU and RAM terms) then the 
mentioned modules.

An example (taken from an old mail), limit to two concurrent calls per user:

modparam("dialog","profiles_with_value","caller")
 ....
/* do some checking */
get_dialog_size("caller","$fu","$avp(cnt)");
if ( $avp(cnt) > 2 ) {
  sl_send_reply("403","Not allowed");
  exit;
}
set_dlg_profile("caller","$fu");
/* route the call */

Cheers,

Henning