[SR-Users] routing SIP REGISTER with app_perl

Vik Killa vipkilla at gmail.com
Tue Sep 16 03:37:06 CEST 2014

I'm learning Kamailio. My ultimate goal is to be able to route SIP messages
from User Agents to specific FS boxes.

I'm starting with routing REGISTER messages.
I used app_perl to randomly lookup one of the FS box's IP Address from
postgres database, then I stored the IP in avp and then in hash. It seemed
like overkill but it was the only way I could keep the FS IP address in
memory between the first REGISTER and REGISTER with Auth.

my app_perl script sets the IP as follows:

my $sth = $dbh->prepare("SELECT ip_address FROM host_machine WHERE
is_online = true ORDER BY random() LIMIT 1");
my $host_ip_address = $sth->fetchrow();
Kamailio::AVP::add(10, "sip:$host_ip_address:5060");

And here is my kamailio.cfg for REGISTERs


if (!is_method("REGISTER|PUBLISH"))

if (is_present_hf("Authorization")) {
$avp(i:10) = $sht(a=>$ci::dest_server);
avp_pushto("$du", "$avp(i:10)");
} else {
 avp_pushto("$du", "$avp(i:10)");
$sht(a=>$ci::dest_server) = $avp(i:10);



"random_server" is the perl script to get the FS IP address...
Seems crude but works...
I'm sure there is probably a more elegant way to do what im trying so any
advice and criticism is appreciated, thank you!

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20140915/be413260/attachment.html>

More information about the sr-users mailing list