18 Jun
2015
18 Jun
'15
11:03 a.m.
Hello,
Is there a way to ping a device using Kamailio.
In my scenario I need to access a Kamailio located in my DMZ over a
firewall that is only open in LAN > DMZ direction. It is close in the other
way round.
In my current configuration I keep the link open using Asterisk qualify
option in SIP. I would like to replace Astersik located in LAN with
Kamailio thus I need to keep the link open.
I know there is an option using dispatch but I would like to avoid using
this module in order to keep it simple.
Is there a "simple embedded function" in order to accomplish this.
thank you
19 Jun
19 Jun
5:59 a.m.
Hi,
if you do not want to store the usr-location-info on that Kamailio,
you can accomplish that by using the nat_traversal module in Kamailio:
http://www.kamailio.org/docs/modules/devel/modules/nat_traversal.html
An alternative approach is doing this directly from Script:
modparam("htable", "htable",
"natping=>size=8;autoexpire=3600;")
# time interval set to 10 seconds
modparam("rtimer", "timer",
"name=NATPING;interval=10;mode=1;")
modparam("rtimer", "exec", "timer=NATPING;route=NATPING")
onreply_route[REGISTER_reply]
{
if (t_check_status("200")) {
if ($T_req($pr) == "udp") {
$var(ouri) = "sip:"+$T_req($si)+":"+$T_req($sp);
$sht(natping=>$var(ouri)) = $(T_req($ct){nameaddr.uri});
}
}
exit;
}
# NATPING Route: #
#####################################################################
route[NATPING] {
sht_iterator_start("nat_iterator", "natping");
while(sht_iterator_next("nat_iterator")) {
xlog("OPTIONS to $shtitval(nat_iterator) via
$shtitkey(nat_iterator)...\n");
$uac_req(method) = "OPTIONS";
$uac_req(ruri) = $shtitval(nat_iterator);
$uac_req(furi) = "sip:server";
$uac_req(turi) = $shtitval(nat_iterator);
$uac_req(ouri) = $shtitkey(nat_iterator);
$uac_req(evroute) = 1;
uac_req_send();
}
sht_iterator_end("nat_iterator");
}
event_route[uac:reply] {
xlog("request sent to $uac_req(ruri) completed with code:
$uac_req(evcode), Type $uac_req(evtype)\n");
if (($uac_req(evtype) != 1)) {
$sht(natping=>$uac_req(ouri)) = $null;
}
}
Thanks,
Carsten
2015-06-18 17:03 GMT+02:00 Nelson Migliaro <eng.migliaro(a)gmail.com>om>:
Hello,
Is there a way to ping a device using Kamailio.
In my scenario I need to access a Kamailio located in my DMZ over a firewall
that is only open in LAN > DMZ direction. It is close in the other way
round.
In my current configuration I keep the link open using Asterisk qualify
option in SIP. I would like to replace Astersik located in LAN with Kamailio
thus I need to keep the link open.
I know there is an option using dispatch but I would like to avoid using
this module in order to keep it simple.
Is there a "simple embedded function" in order to accomplish this.
thank you
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