[SR-Users] Why does Kamailio return many Contacts in Contact header in REGISTER response ?

[Olle E. Johansson]

30 maj 2013 kl. 11:38 skrev Khoa Pham <onmyway133 at gmail.com>:

> When I make REGISTER request to server Kamailio. Kamailio sometimes return me REGISTER 200 OK response with many Contacts in Contact header field
> 
> Contact: 
> <sip:user1 at 1.1.1.1:58492;transport=TLS;ob>;expires=29;received="sip:1.1.1.1:58492;transport=TLS", 
> <sip:user1 at 3.3.3.3:58520;transport=TLS;ob>;expires=244, 
> <sip:user1 at 1.1.1.1:58529;transport=TLS;ob>;expires=284;received="sip:1.1.1.1:58529;transport=TLS", 
> <sip:user1 at 3.3.3.3:58548;transport=TLS;ob>;expires=329, 
> <sip:user1 at 3.3.3.3:58562;transport=TLS;ob>;expires=393, 
> <sip:user1 at 1.1.1.1:58571;transport=TLS;ob>;expires=483;received="sip:1.1.1.1:58571;transport=TLS", 
> <sip:user1 at 2.2.2.2:58588;transport=TLS;ob>;expires=538, 
> <sip:user1 at 1.1.1.1:58600;transport=TLS;ob>;expires=587;received="sip:1.1.1.1:58600;transport=TLS", 
> <sip:user1 at 2.2.2.2:58611;transport=TLS;ob>;expires=630, 
> <sip:user1 at 1.1.1.1:58624;transport=TLS;ob>;expires=670;received="sip:1.1.1.1:58624;transport=TLS", 
> <sip:user1 at 2.2.2.2:58632;transport=TLS;ob>;expires=706, 
> <sip:user1 at 1.1.1.1:58650;transport=TLS;ob>;expires=826;received="sip:1.1.1.1:58650;transport=TLS", 
> <sip:user1 at 2.2.2.2:58661;transport=TLS;ob>;expires=900;+sip.instance="<urn:uuid:00000000-0000-0000-0000-00007dtrf0a4c>";reg-id=1
> 
> Why is that ?


The SIP standard says that the response should include ALL current registrations. These are registrations that has not expired yet.

/O