[OpenSIPS-Users] How to limit number of AOR for user

[Лытаев Антон Викторович]

Hi!

There is a need to limit the maximum number of AOR for the user.
To do so:

modparam("registrar", "max_contacts", 1)
modparam("auth_db", "load_credentials", 
"$avp(loadedip)=domain;$avp(subscriber_username)=username;maxaor")

[user at opensips]# opensipsctl db show subscriber
id      username        domain  password        email_address ha1     
ha1b    rpid    maxaor  quota
1    202020  77.66.55.44  123456 f665ec129cd4556aeed95f3b204ff002 
888f4df11367b3f2859c4993a4ad7dd3        NULL 1 1

Where: maxaor - maximum number of AOR (max limit).

Next in the config:

if (is_method("REGISTER"))
     {
         if(client_nat_test("8"))
         {
             sl_send_reply("403", "Not working NAT");
             www_challenge("", "0");
             exit;
         }
         # authenticate the REGISTER requests (uncomment to enable auth)
         if (!www_authorize("", "subscriber"))
         {
             www_challenge("", "0");
             exit;
         }
         if ($si!=$avp(loadedip))
         {
             www_challenge("", "0");
             exit;
         }
save("location","c($avp(maxaor))");
         if (!db_check_to())
         {
             sl_send_reply("403","Forbidden auth ID");
             exit;
         }

         if (!save("location"))
             sl_reply_error();
         exit;
     }

But in the presence of 2 AOR record:

[user at opensips]# opensipsctl ul show 202020
Contact:: 
<sip:202020 at 77.66.55.44;uniq=6041F87C7634A40A246E833DDA15E>;q=;expires=1471;flags=0x0;cflags=0x0;socket=<udp:85.85.85.85:5060>;callid=<A8502C3B45165582 at 192.168.178.1>;methods=0x3F7F;user_agent=<AVM 
FRITZ!Box Fon WLAN 7140 Annex A 39.04.77 (Feb 14 2014)>
Contact:: 
<sip:202020 at 77.66.55.44:5075>;q=;expires=450;flags=0x0;cflags=0x0;socket=<udp:85.85.85.85:5060>;callid=<5E7D-E2CA-46940374551E59A3ADE4-649 at SipHost>;methods=0xFFFFFFFF;user_agent=<204 
12-37-1612531>

Why? What did I do wrong?

Added a check here:
     if ($ct.fields(uri)=~'uniq')
     {
         sl_send_reply("403", "Wrong contact params");
         www_challenge("", "0");
         exit;
     }
But it seems to me that this is not quite right.....
Please help!
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