[SR-Users] calling failure_route

[David Villasmil]

Thanks Henning,

Between the time when the ping realizes it to the next ping, the scenario
might happen. I don’t know the dns failure function, that’s my problem :)

David

On Thu, 5 May 2022 at 21:43, Henning Westerholt <hw at gilawa.com> wrote:

> Hello,
>
> It should work out of the box with pinging the gateway. Why do you can not
> use this method?
>
> Otherwise you can just use the appropriate dispatcher method to set the
> gateway state as inactive at dns failure.
>
> Cheers,
>
> Henning
>
> ------------------------------
> *Von:* sr-users <sr-users-bounces at lists.kamailio.org> im Auftrag von
> David Villasmil <david.villasmil.work at gmail.com>
> *Gesendet:* Donnerstag, 5. Mai 2022, 20:52
> *An:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
> *Betreff:* [SR-Users] calling failure_route
>
> Hello guys,
>
> Is it possible to call a failure_route like a normal route?
>
> i.e.:
>
> {
>   t_on_failure("myroute");
> }
> ...
>
> route("myroute");
>
> failure_route[myroute] {
> ...
> }
>
> Let me explain:
>
> I have this scenario where a DNS name may get deleted and a dns resolution
> will fail. There's no pinging to that gateway so i need to:
>
> - skip that gateway when dispatching to the setid
> - detect whether the domain is up and available
>
> And failover to the next gateway.
>
> I don't know of any other way so on the DISPATCH route, I'm doing:
>
> route[DISPATCH] {
>   # round robin dispatching on gateways group '1'
>   if(!ds_select_dst("1", "4")) {
>     send_reply("404", "No destination");
>     exit;
>   }
>   xlog("L_DBG", "--- SCRIPT: going to <$ru> via <$du>\n");
>     if(dns_query("$du", "xyz")) {
>       t_on_failure("RTF_DISPATCH");
>       route(RELAY);
>     } else {
>       route(RTF_DISPATCH);
>     }
>     exit;
> }
>
> to try to resolve and if it fails, it will just go to the failover route.
>
>
> makes sense?
>
>
> Regards,
>
> David Villasmil
> email: david.villasmil.work at gmail.com
> phone: +34669448337
>
> --
Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337
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