Hello,

assigning to $fn, $fu or $fU is offered as a convenience way to update parts of From header, but the changes are not applied immediately, like the other operations done over the SIP headers -- see more details in the FAQ:

  - https://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or

In your case, try to do those changes only in branch_route.

Cheers,
Daniel

Hi,

Just to add one more point that $fU & $fn I'm checking not in script but in SIP packet. So using sngrep i see in SIP packet from header where $fU and $fn are "1234567+123456".

Jurijs

On Thu, Oct 17, 2019 at 1:06 PM Jurijs Ivolga <jurijs.ivolga@gmail.com> wrote:

Hi!

I have small problem. When I assign $fU or $fn in request-route and then one more time I make new assignment in branch_route.  Instead of rewriting it is just concatenate needed value at the end. lets assume $avp(cli)=1234567 and $avp(cliplus)=+1234567. So if in request_route I do $fU=$avp(cli); and then in branch_route $fU=$avp(cliplus);. $fU becomes one string: "1234567+1234567". Is it a bug or I missing something?

Here is config snippet:

request_route {

...

route(MY);

...

}

route[MY] {

...
        $avp(cli) = "1234567"
        $avp(cliplus) = "+"+$avp(cli);
        $fU=$avp(cli); # here $fU=1234567
        $fn=$avp(cli); # here $fn=1234567
        route(LCR_ROUTE);
        exit;
}

route[LCR_ROUTE]
{
        if(!is_method("INVITE"))
                return;
        if (!load_gws("1",$rU,$avp(cli))) {
                send_reply("503", "Error loading gateways");
                exit;
        }

        $var(i)=0;
        while($(avp(lcr_gw_uri)[$var(i)])!= $null){
                xlog("L_INFO", "loaded gw_uri_avp[$var(i)]=$(avp(lcr_gw_uri)[$var(i)]) \n");
                $var(i) = $var(i)+1;
        }

        if (!next_gw()) {
                send_reply("503", "No available gateways");
                exit;
        }

        xlog("L_INFO", "request-uri $ru \n");
        xlog("L_INFO", "$avp(lcr_gw_uri), $avp(lcr_id)\n");

        xlog("L_INFO", "flag $avp(lcr_flag) \n");

        t_set_fr(0, 4000);
        t_on_failure("RTF_LCR_ROUTE");
        t_on_branch("BRANCH_CUST");
        route(RELAY);
        exit;
}

branch_route[BRANCH_CUST] {
        if ( $avp(lcr_flag) == 4) {
                $fU=$avp(cliplus); #here $fU=1234567+1234567
                $fn=$avp(cliplus); #here $fn=1234567+1234567
        }
}

Jurijs

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