[OpenSIPS-Users] DNS could not resolve hostname in dispatcher

[Bogdan-Andrei Iancu]

Thanks, I will check and follow on github!

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
   https://www.siphub.com

On 15.01.2024 10:19, guillaume.desgeorge at orange.com wrote:
>
> Hi Bogdan,
>
> Thanks for your answer.
>
> Issue opened : #3285
>
> Regards,
>
> Guillaume Desgeorge
>
> *De :*Bogdan-Andrei Iancu <bogdan at opensips.org>
> *Envoyé :* mercredi 10 janvier 2024 17:28
> *À :* OpenSIPS users mailling list <users at lists.opensips.org>; 
> DESGEORGE Guillaume INNOV/IT-S <guillaume.desgeorge at orange.com>
> *Objet :* Re: [OpenSIPS-Users] DNS could not resolve hostname in 
> dispatcher
>
> Hi Guillaume,
>
> Indeed, a weird one, not marking the destination as failed upon 
> failure to ping it. I checked the drouting module and it is doing such 
> disable, so it might be a overlook in the dispatcher module. Please 
> open a bug report on the github tracker, so we can address this issue.
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
>    https://www.opensips-solutions.com
>    https://www.siphub.com
>
> On 09.01.2024 11:32, guillaume.desgeorge at orange.com wrote:
>
>     Hi everyone,
>
>     We are facing a problem with Opensips 3.3 (but I’ve done tests on
>     opensips 2.4 and it was the same).
>
>     In the dispatcher, if we have a name instead of an IP address in
>     “destination”, and that the DNS falls down, we have an error
>     “could not resolve hostname” in the log. Then, Opensips can’t
>     resolve the name, there is no more OPTIONS message sent to the
>     destination but the state stays as 0 and if a call arrives,
>     Opensips still route the INVITE to the last known IP address.
>
>     I find that’s strange :
>
>      1. Either Opensips consider that the DNS is down but the
>         destination may be still up with the last IP address he knows
>         and he could still send OPTIONS messages to the last known IP
>         address
>      2. Either Opensips consider that the DNS is down and doesn’t send
>         OPTIONS message but in that case he should not send INVITE to
>         the old IP address.
>
>     I work with a product that has his own DNS and removes the name of
>     the server in the DNS when the machine is down. So everytime the
>     server is down, Opensips can’t resolve the name and still send
>     calls to that server…
>
>     Is there any parameters I can use to change that way of working ?
>
>     Regards,
>
>         Guillaume
>
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> Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler
> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
> Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.
>
> This message and its attachments may contain confidential or privileged information that may be protected by law;
> they should not be distributed, used or copied without authorisation.
> If you have received this email in error, please notify the sender and delete this message and its attachments.
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