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

[Daniel-Constantin Mierla]

Hello,

On 02/15/2010 05:05 PM, Anton Roman wrote:
> 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?

apart of first destination which is set in the r-uri, the rest become 
branches. You have to loop back so they arrive as r-uri and location 
lookup resolves the user address. lookup("location") works only with r-uri.

Cheers,
Daniel

>
> Thanks for your time,
> best regards
>
> Anton
> ----------------------------------------------------------------------------------------------------------------------------------------
> #
> U +0.000328 10.1.20.103:5060 <http://10.1.20.103:5060> -> 
> 10.1.3.18:5061 <http://10.1.3.18:5061>
> INVITE sip:1001 at 10.1.3.18:5061 <http://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 at 10.1.20.103 
> <mailto:sip%3A1002 at 10.1.20.103>>;tag=280da520d15d62cfo1
> To: "1000" <sip:1000 at 10.1.20.103 <mailto:sip%3A1000 at 10.1.20.103>>
> Call-ID: 8973c34-427096cb at 10.1.3.15 <mailto:8973c34-427096cb at 10.1.3.15>
> CSeq: 102 INVITE
> Max-Forwards: 69
> Contact: "1002" <sip:1002 at 10.1.3.15:5061 <http://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 <http://10.1.20.103:5060> -> 
> 10.1.20.103:5060 <http://10.1.20.103:5060>
> INVITE sip:1005 at 10.1.20.103 <mailto:sip%3A1005 at 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 at 10.1.20.103 
> <mailto:sip%3A1002 at 10.1.20.103>>;tag=280da520d15d62cfo1
> To: "1000" <sip:1000 at 10.1.20.103 <mailto:sip%3A1000 at 10.1.20.103>>
> Call-ID: 8973c34-427096cb at 10.1.3.15 <mailto:8973c34-427096cb at 10.1.3.15>
> CSeq: 102 INVITE
> Max-Forwards: 69
> Contact: "1002" <sip:1002 at 10.1.3.15:5061 <http://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
> ...
>
> ----------------------------------------------------------------------------------------------------------------------------------------
>
>
>
>
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