Re: [SR-Users] TM: t_relay([host, port]) DNS Queries

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@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@jive.com mailto:lroof@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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