24 Jan
2014
24 Jan
'14
12:43 a.m.
Hi Volkan,
You probably should take a look at the Path module. For UACs behind NAT,
the INVITEs should be proxied via the server with which the client is
registered.
Best regards,
Charles
On 23 January 2014 21:41, Volkan Oransoy <voransoy(a)gmail.com> wrote:
First of all thank you for your replies.
I think I am quite close to solution. But still have NAT issues in some
cases.
I have added a bunch of code to the standard kamailio script.
I defined a new flag
#!define SOCK_FLAG 8
added these parameters to registrar module.
modparam("registrar", "sock_flag", SOCK_FLAG)
modparam("registrar", "sock_hdr_name", "Sock-Info")
set this flag in the nat test section
if (nat_uac_test("19")) {
if (is_method("REGISTER")) {
fix_nated_register();
} else {
fix_nated_contact();
}
setflag(FLT_NATS);
setflag(SOCK_FLAG);
}
and send it to the peer proxy to replicate client registration. I also
added received parameter to the replicated packet.
if ($si!=$sel(cfg_get.peer.srv_ip))
{
add_rcv_param();
t_replicate("sip:10.173.187.226:5060
;transport=udp");
}
Now, the issue is, the original proxy that receives the registration works
as expected.Replicated proxy, has the location data as expected. But if I
sent a call over second proxy, UA does not respond. I can see the INVITE
packet that comes from replicated proxy on my client PC, but UA does not
respond to INVITE that comes from second proxy.
AOR:: 1002(a)test.example.net
Contact:: sip:1002@10.173.191.72:1031;transport=udp;registering_acc=test_
example_net Q=
Expires:: 544
Callid:: 443bb84315de2e2b637a55ab44c0b759@0:0:0:0:0:0:0:0
Cseq:: 256
User-agent:: Jitsi2.4.4997Linux
Received:: sip:10.173.191.72:1024
State:: CS_NEW
Flags:: 0
Cflag:: 192
Socket:: udp:10.192.208.194:5060
Methods:: 4294967295
Ruid:: uloc-52de6613-3dd4-28
Reg-Id:: 0
Last-Keepalive:: 1390512267
Last-Modified:: 1390512267
This is the ul show output on original proxy. Replicated proxy has nearly
same values except Cflag and Socket. On replicated proxy, Cflag is 0 and
Socket points to the original proxy. Is this output normal? Do I have
anything missing in the setup?
Thanks.
/Volkan
2014/1/21 Daniel-Constantin Mierla <miconda(a)gmail.com>
--
www.sipcentric.com
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Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered
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B7 4EJ.
Hello,
run with debug=3 in config file and see if there are log messages that
gives you more details about what happens.
Typically, when doing replication, you may need to replicate received and
sometime socket information -- that can be done via headers and then added
to avps before saving to location in the second peer. Look at the readme of
registrar module for those parameters.
Cheers,
Daniel
On 19/01/14 14:05, Volkan Oransoy wrote:
Hi all,
I am trying to setup an active-active pair of sip proxies. I have
connected two kamailio boxes to the same PostgreSQL database and my usrloc
db_mode is 3. I can see the registration data in the database but "ul show"
outputs of two device is not same. I think writing registration data to the
same db is not enough.
I have found a method to replicate the registraiton process. With
t_replicate, I synchronize REGISTER requests to both boxes. But I had to
disable shared database because of uniqe id validations.
route[REGISTRAR] {
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if (is_method("REGISTER"))
{
if(isflagset(FLT_NATS))
{
setbflag(FLB_NATB);
}
if (!save("location"))
sl_reply_error();
t_replicate("sip:10.1.1.2:5060;transport=udp");
exit;
}
}
My media servers randomly sends calls to SIP proxies. If Media server
send the call to the original registrar then the replicated, call initiates
normally. But when UA registered in first proxy, and Media server sends the
call to the send one, even if second one has UA in location table, call
does not initiate.
Does anyone have an idea about this kind of an active active setup?
Thanks in advance. Best regards,
/Volkan
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Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda -
http://www.linkedin.com/in/miconda
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