Hello Daniel,

Long question, short answer but it worked for me. Thanks for your helping.

Serdar

Hello,

in this case, you have to perform the update of To header only in branch_route.

Cheers,
Daniel

On 03.04.23 14:58, Serdar GUCLUER wrote:

Hello all,

In my situation, it is possible to call forwarding to registered users multiple times on same leg. For each forward i have to update To uri and i am using uac_replace_to to do that.

But on second relaying, To uri was malformed. On below, Im attaching configuration to illustrate my problem. (version-5.4.9)

First relay - To: sip:xyz@192.168.0.51

Second relay - To: sip:xyz@192.168.0.51sip:abc@192.168.0.51

Thanks in advance.

Serdar

loadmodule "uac.so"
modparam("uac","restore_mode","auto")


request_route {
    ...
    $avp(x) = "abc";
    $avp(x) = "xyz";
    $avp(myip) = "192.168.0.51";
    $avp(i) = 0;
    route(SERDAR);
    ...
}

route[SERDAR] {
    if ($(avp(x)[$avp(i)])!=$null) {
        $avp(destination) = $(avp(x)[$avp(i)]);
        $avp(i) = $avp(i) + 1;
        $rU=$_s($avp(destination));
        uac_replace_to("$_s(sip:$avp(destination)@$avp(myip))");
        route(LOCATION);
    } else {
        send_reply("403", "Opps!");
        exit;
    }
}

route[LOCATION] {
    $avp(oexten) = $rU;
    if (!lookup("location") ) {
        t_newtran();
        switch ($var(rc)) {
            case -1:
            case -3:
                send_reply("480", "Temporarily Unavailable");
                exit;
            case -2:
                send_reply("405", "Method Not Allowed");
                exit;
        }
    }
    t_on_failure("SERDAR_FAILURE");
    if(!t_relay()) sl_reply_error();
    exit;
}

failure_route[SERDAR_FAILURE] {
    route(NATMANAGE);
    if (t_is_canceled()) exit;
    route(SERDAR);
}

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