[Kamailio-Users] How to configure alias_db_lookup in config script

[Alex Balashov]

JR,

Like many lookup functions, the alias_db_lookup() function has a 
return value.  You should check it for a negative result before 
proceeding further in the script:

Example:

    if(!alias_db_lookup("dbaliases")) {
            sl_send_reply("404", "Not Found");
            exit;
    }

Error handling in general is a must.

-- Alex

JR Richardson wrote:

> Hi All,
>  
> I have a real simple load balancer proxy setup using the dispatcher 
> module, works great.  I want to do an alias lookup before I send the 
> calls through to the dispatcher, but I can't seem to find a good example 
> of how that should be setup in the config script.  I've tried different 
> things, the aliase_db_lookup is working but if a user is not in the 
> database, the call loops and does not continue on to the dispatcher.  
> Here is my current route script (this does not work):
>  
> route{
>         # initial sanity checks -- messages with
>         # max_forwards==0, or excessively long requests              
>         if (!mf_process_maxfwd_header("10")) {
>                 sl_send_reply("483","Too Many Hops");
>                 exit;
>         };
>         if (msg:len >=  2048 ) {
>                 sl_send_reply("513", "Message too big");
>                 exit;
>         };
> 
>         alias_db_lookup("dbaliases");
>         t_on_failure("1");
>         t_relay();
>  
>         ds_select_dst("1", "4");
>         t_on_failure("1");
>         t_relay();
> }
> 
> failure_route[1] {
>         ds_next_dst();
>         forward();
>         }
> I think there should be an 'if' 'then' or 'if' 'else' separating the 
> alias_db_lookup and the ds_select functions, but I'm not sure of the 
> syntax and where the curly brackets need to be.
>  
> Thanks.
>  
> JR
> -- 
> JR Richardson
> Engineering for the Masses
> 
> 
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> 
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-- 
Alex Balashov - Principal
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671