[OpenSER-Users] uac_auth, how to sending request in failure route?

[Cseke Tamas]

Hello,

I 'd like to relay calls to another sip proxy, which requires 
authentication.
But i can't forward the 407 reply to the caller, beacause they cant 
authenticate themselves,
so i have to authenticate the call myself, without the caller knows 
anything about it.

witch uac_auth, i can add the proxy-authorization header, but i can't 
send the new request to the proxy.

i try this way:

route[1] {
    t_on_failure("1");
    rewritehostport("another.proxy:5060");
    if (!t_relay()) {
        sl_reply_error();
    }
    exit;

}

failure_route[1] {
    xlog("L_WARN", "FAILURE Route 3 AUTH required...trying..\n");
    uac_auth();
    if(t_newtran()) {
        xlog("L_WARN", "Creating new transaction successfully...\n");
    }
    else {
        xlog("L_WARN", "Creating new transaction failed...\n");
    };
    t_relay();
}


When the proxy challange authentication with 407, the call is passed to 
failure route properly, but t_relay failed with the following error:
 0(27975) ERROR:tm:t_forward_nonack: no branch for forwarding
 0(27975) ERROR:tm:w_t_relay: t_forward_nonack failed

I think that's mean that the transaction doesn't exists, becacause it 
acknowleged alrealy, am i right?
i think i have to t_newtran(), but it cannot be done in failure route, 
Can you suggest any method to send the request again with the credentials?

Thanks any help,
Tamas