[SR-Users] uac_replace_from

[Daniel Tryba]

On Friday 04 April 2014 23:23:49 Kelvin Chua wrote:
> I am curious on your method daniel, what do you mean by
> "store the changes in avps and commit the changes" ?

Any modifications I want to make to from are set in 
$avp(uacfromdisplay) and/or $avp(uacfromuri), eg for an anonymous outbound 
call:

else if($rU=~"^131[0-9]+$")
{
	strip(3);

	append_hf("Privacy: id\r\n");

	$avp(uacreplacefromdisplay)=1;
	$avp(uacfromdisplay)="anonymous";

	$avp(uacreplacefromuri)=1;
	$avp(uacfromuri)="sip:anonymous at anonymous.invalid:"+$rp;
}



and in route [RELAY] they are actually commited:

        if($avp(uacreplacefromdisplay) && $avp(uacreplacefromuri))
        {
                uac_replace_from("$avp(uacfromdisplay)","$avp(uacfromuri)");
                $avp(uacreplacefromdisplay[*])=$null;
                $avp(uacreplacefromuri[*])=$null;
        }
        else
        {
                if($avp(uacreplacefromdisplay))
                {
                        uac_replace_from("$avp(uacfromdisplay)","");
                        $avp(uacreplacefromdisplay[*])=$null;
                }
                if($avp(uacreplacefromuri))
                {
                        uac_replace_from("$avp(uacfromuri)");
                        $avp(uacreplacefromuri[*])=$null;
                }
        }


This way you can make multiple "changes" during call routing logic and be sure 
there is only 1 call to the uac_replace_from/to functions.

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