[OpenSIPS-Users] drouting is_from_gw prepending with pri_prefix

[Lasse Johnsen]

Hi Brett,

Thank you for taking the time to respond.

The do_routing function adds the prefix of the pri_prefix function for  
the gateway the call is destined "to".

I would like to add the prefix based on the gateway the call is "from".

The function is_from_gw is able to strip based on the originating  
gateway. I would instead like to prepend / add a prefix - my question  
pertained to adding a prefix based on the "from" gateway.

So suppose I have:

gwid	type	address	strip	pri_prefix	attrs	description
1	10	X.X.X.X	0	 	NULL	Internal gateway
2	20	1.2.3.4	0	101 	NULL	External gateway 1
3	20	5.6.7.8	0	102 	NULL	External gateway 2

If a call comes from 1.2.3.4 I would like to prepend "101" before  
sending the call to the "Internal gateway".
If on the other hand the call comes from 5.6.7.8 I would like to  
prepend "102" before sending the call to the "Internal gateway".

I hope that makes sense.


/Lasse




On 13 Jul 2009, at 16:25, Brett Nemeroff wrote:

> That should be done automatically by the do_routing function, unless  
> of course you are writing the output of that function to an AVP  
> instead of a RURI. Where it'll end up in the AVP.
>
> -Brett
>
>
> On Sun, Jul 12, 2009 at 7:40 PM, Lasse Johnsen <lasse at freebsdcluster.org 
> > wrote:
> Hi,
>
> I use the is_from_gw function in drouting to authenticate what
> gateways are allowed to talk to my OpenSIPS server.
>
> I understand that I can strip something from the R-URI using this
> function. Is there anyway I can add the gateway db entry's pri_prefix
> in the same fashion.
>
> I essentially want to prepend the r-uri based on the originating
> gateway. What is the best way of doing this.
>
>
> /Lasse
>
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-- 
Best regards,

Lasse L. Johnsen
CEO, VoIP-X Communications Limited

E           lasse.johnsen at voip-x.net
M          +44 7832 335 392
F           +44 2075 262 178