[SR-Users] TM: t_relay([host, port]) DNS Queries
Louis-Olivier Roof
lroof at jive.com
Wed Jul 27 17:59:10 CEST 2016
Carsten,
Running dns.view on a very active system yields no output (not an error).
kamailio_4.2.0-2+deb8u1_amd64
Thanks,
Louis-Olivier
On 2016-07-27 11:21 AM, Carsten Bock wrote:
> Hi,
>
> can you run kamcmd dns.view? There you should see, what records are
> cached and when they will be refreshed.
>
> Thanks,
> Carsten
>
>
>
> 2016-07-27 17:04 GMT+02:00 Louis-Olivier Roof <lroof at jive.com
> <mailto:lroof at jive.com>>:
>
> Thanks for your prompt answer Carsten,
>
> According to the docs, the cache should be periodically invalidated
> according to the replies TTL (bounded by config values).
>
> So leaving the cache ON should be OK and still produce DNS queries,
> which is not what I'm seeing.
>
> Am I misunderstanding something?
>
> Thanks!
>
> Louis-Olivier
>
> On 2016-07-27 10:51 AM, Carsten Bock wrote:
> > Hi Louis-Olivier,
> >
> > you should look at the DNS-Parameters of the Core:
> > http://www.kamailio.org/wiki/cookbooks/devel/core#dns_parameters
> >
> > Kamailio caches DNS results by default (which can be turned off).
> >
> > Thanks,
> > Carsten
> >
> > 2016-07-27 16:47 GMT+02:00 Louis-Olivier Roof <lroof at jive.com <mailto:lroof at jive.com>
> > <mailto:lroof at jive.com <mailto:lroof at jive.com>>>:
> >
> > Dear Kamailio users,
> >
> > Ref: http://kamailio.org/docs/modules/4.2.x/modules/tm.html#tm.f.t_relay
> >
> > Using t_relay([host, port]) to relay messages to a specific host does
> > not seem to generate DNS queries to the said host after Kamailio has
> > initially processed the configuration file.
> >
> > It resolves the host once at startup then continues using the same
> > IP after.
> >
> > Is that expected behavior? Anyone has had this issue before and found a
> > way to work around it?
> >
> > Note that for this specific application, messages need to be relayed to
> > a specified host (different from current R-URI) and this host needs to
> > be resolved by DNS during normal operation, not only at startup.
> >
> > Thanks!
> >
> > Louis-Olivier
> >
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> >
> >
> > --
> > Carsten Bock
> > CEO (Geschäftsführer)
> >
> > ng-voice GmbH
> > Millerntorplatz 1
> > 20359 Hamburg / Germany
> >
> > http://www.ng-voice.com
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> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
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>
>
> --
> Carsten Bock
> CEO (Geschäftsführer)
>
> ng-voice GmbH
> Millerntorplatz 1
> 20359 Hamburg / Germany
>
> http://www.ng-voice.com
> mailto:carsten at ng-voice.com <mailto:carsten at ng-voice.com>
>
> Office +49 40 5247593-40
> Fax +49 40 5247593-99
>
> Sitz der Gesellschaft: Hamburg
> Registergericht: Amtsgericht Hamburg, HRB 120189
> Geschäftsführer: Carsten Bock
> Ust-ID: DE279344284
>
> Hier finden Sie unsere handelsrechtlichen Pflichtangaben:
> http://www.ng-voice.com/imprint/
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
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