[asterisk-users] Forward loop protection...

[dk at donkelly.biz]

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of A J Stiles
Sent: Wednesday, June 3, 2015 3:08 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Forward loop protection...

On Tuesday 02 Jun 2015, Carlos Chavez wrote:
>      Ia had a server overload today because someone did a call forward 
> to their own extension.  To do a call forward I write a key called 
> CFWD with the extensión number and number to dial .  The main script 
> tests if the key/value exists and dials the number stored in the 
> database.  What is an easy way to prevent dumb people from creating a loop?

There currently is no easy way to prevent an infinite forwarding loop.  If you come up with one, then you might well earn yourself a Nobel Prize for solving the Halting Problem .....

The obvious bodge is to set a hard limit on depth of recursion; if an actual real, live person is not reached within, say, five hops then the call should go to  (the originally-called party's)  voicemail.

--
AJS


Deciding on the mailbox to use is problematic! The dialed-party may be away for an extended period and wants voice mail handled by the forwarded-to party.

  --Don