One could also use dialplan and dispatcher, add the domains to the dialplan table with the GID of the dispatcher, add all IPs to redirect to, and use dispatcher instead. That would also give you failover and distribution.

In terms of multiple domains, there’s probably a better way, but this is how I do it:

So I would add to the dialplan table the domains I’m serving to, I.e.:

Match *dom1* and attrs 1

Match *dom2* and attrs 2

...

Then on the dispatcher:

GID:1 ip: sip:1.2.3.4:5060

GID:1 ip: sip:2.3.4.4:5060

GID:2 ip: sip:9.8.7.6:5060

GID:2 ip: sip:8.7.6.5:5060

So anything with “dom1” in the $ru would be sent out to GID 1, “dom2” to GID 2, and so on.

And use the dialplan and dispatcher like so:

modparam("dialplan", "db_url", "mysql://DB_USER:DB_PASS@DB_HOST/kamailio")

modparam("dialplan", "attrs_pvar", "$var(dispatcher_id)")

modparam("dialplan", "fetch_rows", 100)

...

route[DISPATCH] {

dp_match("1", "$ru");

xlog("[DISPATCH] '$ru' was translated to '$var(dispatcher_id)'\n");

xlog("[DISPATCH] avp(dsdstid): $avp(dsdstid)\n");

if(!ds_select_dst("$var(dispatcher_id)", "9"))

{

send_reply("404", "No destination");

exit;

}

xlog("L_DBG", "--- SCRIPT: going to <$ru> via <$du>\n");

t_on_failure("RTF_DISPATCH”);

append_to_reply("Contact: <sip:$du>\r\n");

sl_send_reply("300","Multiple Choices");

exit;

}

Or something like that. (I took this off my

https://github.com/davidcsi/kamailio-private-public/blob/master/README.md )

Please excuse and errors, typing on my phone :)

Hope that helps!

David

On Wed, 4 Mar 2020 at 07:49, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

On 04.03.20 04:44, Joli Martinez wrote:
> Hello,
>
> We have several SIP domains coming into our SBC. I need to build a
> Kamailio box that will 302 the call to the appropriate server based on
> the domain. If the call does not come in with a recognized domain I
> would like for it to 404 the call. Not sure how to do this. Can
> someone point me in the right direction?

the complete solution and complexity can be a matter of scalability and
security needs, but for redirect itself is about sending a
sl_send_reply(...) after using append_to_reply(). If relevant data is
stored in database, sqlops is the module that can help to fetch the
matching records.

Cheers,
Daniel

--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - March 9-11, 2020, Berlin - www.asipto.com
Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.com

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