[SR-Users] Refer Using UAC.

[Daniel-Constantin Mierla]

If asterisk is in the path of the call, then just forward the REFER to 
it, there is no need to generate a new one.

Also, note that REFER is many times part of a dialog, uac_req_send() 
creates requests out of the dialog.

Cheers,
Daniel

On 1/16/11 11:37 PM, David J. wrote:
> I realize that kamailio is not a b2bua;
> But because we are using Asterisk in the path;
>
> To extend the Asterisk Realtime Tutorial;
>
> I was wondering if I could do something like this...
>
> Kind of like how we use UAC to send a register to Asterisk;
> Could we do the same and modify the method to use REFER instead?
>
> I know it is more complex; but I am not sure where to handle this case;
>
> Thanks for any pointers.
>
>     if(is_method("REFER")){
>         $var(rip) = $sel(cfg_get.asterisk.bindip);
>         $uac_req(method)="REFER";
>         $uac_req(ruri)="sip:" + $var(rip) + ":" + 
> $sel(cfg_get.asterisk.bindport);
>         $uac_req(furi)="sip:" + $au + "@" + $var(rip) + ";tag=" + $ft;
>         $uac_req(turi)="sip:" + $au + "@" + $var(rip) + ";tag=" + $tt;
>         $uac_req(hdrs)="Contact: <sip:" + $au + "@"
>                                 + $sel(cfg_get.kamailio.bindip)
>                                 + ":" + 
> $sel(cfg_get.kamailio.bindport) + ">\r\n";
>         if($sel(contact.expires) != $null)
>                 $uac_req(hdrs)= $uac_req(hdrs) + "Expires: " + 
> $sel(contact.expires) + "\r\n";
>         else
>                 $uac_req(hdrs)= $uac_req(hdrs) + "Expires: " + 
> $hdr(Expires) + "\r\n";
>
>
>          uac_req_send();
>
>
>         }
>
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-- 
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com