10 Feb
2021
10 Feb
'21
10:31 p.m.
Hi
I have setup failover on Kamailio 5.1 using Dispatcher module as below. On a round robin
algorithm, INVITEs are being sent to BOTH healthy and faulty GW. When an INVITE is being
sent to the faulty GW, a re-transmission will be sent after "t_set_fr" time to
the healthy GW and calls are completed successfully.
I was wondering if I can setup the health check correctly so the faulty IP GW can be out
of round robin till the health check pass it again, i.e. no INVITE is being sent to the
faulty GW as long as the health check not pass it.
Your help is greatly appreciated,
AL
# dispatcher.list
1 sip:X.X.X.X:5060 0 0
1 sip:Y.Y.Y.Y:5060 0 0
# ----- dispatcher params -----
modparam("dispatcher", "list_file",
"/usr/local/etc/kamailio/dispatcher.list")
modparam("dispatcher", "flags", 2)
modparam("dispatcher", "ds_ping_interval", 10)
modparam("dispatcher", "dst_avp", "$avp(AVP_DST)")
modparam("dispatcher", "grp_avp", "$avp(AVP_GRP)")
modparam("dispatcher", "cnt_avp", "$avp(AVP_CNT)")
modparam("dispatcher", "ds_probing_mode", 1)
modparam("dispatcher", "ds_ping_reply_codes",
"class=2;class=3;class=4")
modparam("dispatcher", "ds_ping_interval", 5)
modparam("dispatcher", "ds_probing_threshold", 1)
# Dispatch requests
route[DISPATCH] {
if(!ds_select_dst("1", "4")) {
send_reply("503", "No destination");
exit;
}
t_on_failure("DISPATCH_FAILOVER");
t_set_fr(0,1000);
route(RELAY);
exit;
}
# Failure Route
failure_route[DISPATCH_FAILOVER]{
if (t_is_canceled()) exit;
if(!ds_next_dst()) {
send_reply("503", "Out of gateways");
exit;
}
t_on_failure("DISPATCH_FAILOVER");
t_relay();
}