3 Jul
2023
3 Jul
'23
9:07 a.m.
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
3 Jul
3 Jul
11:59 a.m.
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 <shahhusayn(a)msn.com>
Sent: Montag, 3. Juli 2023 08:08
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
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
4 Jul
4 Jul
10:40 a.m.
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 <hw(a)gilawa.com>
Sent: Monday, July 3, 2023 4:59 PM
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
Cc: Shah Hussain Khattak <shahhusayn(a)msn.com>
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 <shahhusayn(a)msn.com>
Sent: Montag, 3. Juli 2023 08:08
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
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
2:41 p.m.
Hello,
the same From URI will always hash to the same server with this algorithm. Have you tested
with different URIs (user), or only with one user? Over multiple users it should balance
out to a fair distribution.
Cheers,
Henning
--
Henning Westerholt - https://skalatan.de/blog/
Kamailio services - https://gilawa.com<https://gilawa.com/>
From: Shah Hussain Khattak <shahhusayn(a)msn.com>
Sent: Dienstag, 4. Juli 2023 09:40
To: Henning Westerholt <hw(a)gilawa.com>om>; Kamailio (SER) - Users Mailing List
<sr-users(a)lists.kamailio.org>
Subject: Re: Using Kamailio in front of Freeswitch for load balancing REG and Calls
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 <hw@gilawa.com<mailto:hw@gilawa.com>>
Sent: Monday, July 3, 2023 4:59 PM
To: Kamailio (SER) - Users Mailing List
<sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>
Cc: Shah Hussain Khattak <shahhusayn@msn.com<mailto:shahhusayn@msn.com>>
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 <shahhusayn@msn.com<mailto:shahhusayn@msn.com>>
Sent: Montag, 3. Juli 2023 08:08
To: Kamailio (SER) - Users Mailing List
<sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>
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
12 Jul
12 Jul
12:21 p.m.
Closing the loop, the issue was resolved after following Henning's suggestion.
Regards,
Shah Hussain
________________________________
From: Henning Westerholt <hw(a)gilawa.com>
Sent: Tuesday, July 4, 2023 7:41 PM
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
Cc: Shah Hussain Khattak <shahhusayn(a)msn.com>
Subject: RE: Using Kamailio in front of Freeswitch for load balancing REG and Calls
Hello,
the same From URI will always hash to the same server with this algorithm. Have you tested
with different URIs (user), or only with one user? Over multiple users it should balance
out to a fair distribution.
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>
From: Shah Hussain Khattak <shahhusayn(a)msn.com>
Sent: Dienstag, 4. Juli 2023 09:40
To: Henning Westerholt <hw(a)gilawa.com>om>; Kamailio (SER) - Users Mailing List
<sr-users(a)lists.kamailio.org>
Subject: Re: Using Kamailio in front of Freeswitch for load balancing REG and Calls
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 <hw@gilawa.com<mailto:hw@gilawa.com>>
Sent: Monday, July 3, 2023 4:59 PM
To: Kamailio (SER) - Users Mailing List
<sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>
Cc: Shah Hussain Khattak <shahhusayn@msn.com<mailto:shahhusayn@msn.com>>
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 <shahhusayn@msn.com<mailto:shahhusayn@msn.com>>
Sent: Montag, 3. Juli 2023 08:08
To: Kamailio (SER) - Users Mailing List
<sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>
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
499
days inactive
508
days old
4 comments
2 participants
participants (2)
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Henning Westerholt -
Shah Hussain Khattak