[Kamailio-Users] Problems with parallel forking to different users - sr-users

15 Feb 2010


      Hi all,
I'm trying to implement parallel forking to different users registered on a
Kamailio server. I want to fork the call to a number of different users (not
including the called user).
To do this I added the piece of code below to the default 3.0.0 config file:
...
          # account only INVITEs
    if (is_method("INVITE")) {
        setflag(1); # do accounting
        setflag(4); #dialog aware
if(avp_db_load("$ru/username","$avp(s:fork)"))
        {
            avp_pushto("$ru/username","$avp(s:fork)/g");
};
}
                                 ....
This is usr_preference table content:
+----+------+----------+--------+-----------+------+-------+---------------------+
| id | uuid | username | domain | attribute | type | value |
last_modified       |
+----+------+----------+--------+-----------+------+-------+---------------------+
|  4 |      | 1000     |        | fork      |    0 | 1001  |              |
|  3 |      | 1000     |        | fork      |    0 | 1005  |              |
+----+------+----------+--------+-----------+------+-------+---------------------+
Kamailio correctly forks the call to 1001 and 1005, but the Request-URI of
the 1005 user is not correctly set, because the proxy IP is used instead of
the IP where the user is registered (10.1.2.15). You can see the INVITEs
below.
Could anybody tell me what I'm doing badly?
Thanks for your time,
best regards
Anton
----------------------------------------------------------------------------------------------------------------------------------------
#
U +0.000328 10.1.20.103:5060 -> 10.1.3.18:5061
INVITE sip:1001@10.1.3.18:5061 SIP/2.0
Record-Route: sip:10.1.20.103;lr=on;did=c34.3ed81d77
Via: SIP/2.0/UDP 10.1.20.103;branch=z9hG4bKc40b.ec3572a3.0
Via: SIP/2.0/UDP 10.1.3.15:5061;branch=z9hG4bK-213aa77
From: "1002" <sip:1002@10.1.20.103 sip%3A1002@10.1.20.103
...
;tag=280da520d15d62cfo1
To: "1000" <sip:1000@10.1.20.103 sip%3A1000@10.1.20.103>
Call-ID: 8973c34-427096cb@10.1.3.15
CSeq: 102 INVITE
Max-Forwards: 69
Contact: "1002" sip:1002@10.1.3.15:5061
Expires: 240
User-Agent: Linksys/SPA941-5.1.5
Content-Length: 202
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: replaces
Content-Type: application/sdp
v=0
o=- 2003696 2003696 IN IP4 10.1.3.15
...
#
U +0.000052 10.1.20.103:5060 -> 10.1.20.103:5060
INVITE sip:1005@10.1.20.103 sip%3A1005@10.1.20.103 SIP/2.0
Record-Route: sip:10.1.20.103;lr=on;did=c34.3ed81d77
Via: SIP/2.0/UDP 10.1.20.103;branch=z9hG4bKc40b.ec3572a3.1
Via: SIP/2.0/UDP 10.1.3.15:5061;branch=z9hG4bK-213aa77
From: "1002" <sip:1002@10.1.20.103 sip%3A1002@10.1.20.103
...
;tag=280da520d15d62cfo1
To: "1000" <sip:1000@10.1.20.103 sip%3A1000@10.1.20.103>
Call-ID: 8973c34-427096cb@10.1.3.15
CSeq: 102 INVITE
Max-Forwards: 69
Contact: "1002" sip:1002@10.1.3.15:5061
Expires: 240
User-Agent: Linksys/SPA941-5.1.5
Content-Length: 202
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: replaces
Content-Type: application/sdp
v=0
o=- 2003696 2003696 IN IP4 10.1.3.15
...
----------------------------------------------------------------------------------------------------------------------------------------