[SR-Users] Replicate registration

[Charles Chance]

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 at 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 at test.example.net
> Contact:: sip:1002 at 10.173.191.72:1031;transport=udp;registering_acc=test_
> example_net Q=
>  Expires:: 544
> Callid:: 443bb84315de2e2b637a55ab44c0b759 at 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 at gmail.com>
>
>>  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] {
>>>         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
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users at lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>> --
>> Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>
>>
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>>
>>
>
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