Sweet! Henning, thank you very much for the update, it was very helpful.
As I am new to the Kamailio, I was able to set up the basic routing now, but
for some reason, my registration requests are always going to the first
gateway. My routing block looks like this:
# Handle SIP registrations
route[REGISTRAR] {
if(!is_method("REGISTER"))
return;
add_path_received();
# Use From URI hash for dispatching
if (!ds_select_dst("1", "1")) {
send_reply("404", "No destination");
exit;
}
xdbg("--- SCRIPT: going to <$ru> via <$du> (attrs:
$xavp(_dsdst_=>attrs))\n");
t_on_failure("RTF_DISPATCH");
route(RELAY);
exit;
}
# Dispatch requests
route[DISPATCH] {
# round robin dispatching on gateways group '1'
if(!ds_select_dst("1", "1")) {
send_reply("404", "No destination");
exit;
}
xdbg("--- SCRIPT: going to <$ru> via <$du> (attrs:
$xavp(_dsdst_=>attrs))\n");
t_on_failure("RTF_DISPATCH");
route(RELAY);
exit;
}
my dispatcher file configs are quite simple:
1 sip:172.16.8.4;transport=udp 0 0
1 sip:172.16.8.5;transport=udp 0 0
Can you please advise what config is missing here so I can load balance the
registrations and calls properly? For example, I would like both the gateways
to handle 50% of the load. Sorry if I am missing something very basic here.
Regards,
Shah Hussain
________________________________
From: Henning Westerholt <[email protected]>
Sent: Monday, July 3, 2023 4:59 PM
To: Kamailio (SER) - Users Mailing List <[email protected]>
Cc: Shah Hussain Khattak <[email protected]>
Subject: RE: Using Kamailio in front of Freeswitch for load balancing REG and
Calls
Hello,
for authentication you should not use round-robin, for the observed reasons.
You could e.g., hash over the from URI, then all requests should end up on the
same freeswitch for the authentication to work.
Here is an (old) discussion with some more content:
https://lists.kamailio.org/pipermail/devel/2008-September/016234.html
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>
From: Shah Hussain Khattak <[email protected]>
Sent: Montag, 3. Juli 2023 08:08
To: Kamailio (SER) - Users Mailing List <[email protected]>
Subject: [SR-Users] Using Kamailio in front of Freeswitch for load balancing
REG and Calls
Hello Awesome people,
I have configured Kamailio in front of two Freeswitch servers. I am using the
dispatcher module to load and balance the traffic between the two FS boxes. My
dispatcher is configured in a round-robin fashion.
If I send a register to my FS servers, the re-register post-challenge (401)
message is routed to the second FS server and the registration fails. I want to
check with you guys how are you handling this in your setups. I am sure a lot
of companies are using Kamailio to load balance traffic toward the FS and
Asterisk servers.
UAC --- > Kamailio --- > FS1
REG ---- > REG ---- > REG
401 <---- 401 < ---- 401
re-register with authorization data:
UAC --- > Kamailio --- > FS2
REG --- > REG ---- > REG
401 <---- 401 < ---- 401
it just create this loop and register fails.
Ideally, I want Kamailio to send the re-register (with auth data) to the same
FS server that challenged it.
Any ideas or pointers to fix this issue would be highly appreciated, maybe I am
missing some very basic configuration. Or maybe there is another simpler way
instead of using a dispatcher module.
Thank you!
Regards,
Shah Hussain
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