New subject: Unable to Update Headers in failure route which were build in request route

26 Oct 2015

Hi All,

I am trying to have a failover route where if a initial relay fails , i can
forward the same request to a second provider.

I am using a certain set of headers that help to authenticate over my
providers.  I am trying to update those headers. However update and removal
both fail. The headers are still present. Please help me understand if i am
wrong. Here's the code.

.....
route(GET_CREDENTIALS);
}

remove_hf_re("X-*");
append_hf("X-Src-IP: Trusted\r\n", "Call-ID");
append_hf("X-Identity: $hdr(X-Calling-User)\r\n", "Call-ID");
append_hf("X-Auth-ID: $avp(siptrunk_username)\r\n", "Call-ID");

$avp(realm) = $fd;
$rd = $avp(siptrunk_domain);
$var(duri) = "sip:"+$rU+"@"+$avp(siptrunk_proxy);
$du = $var(duri);
t_on_failure("UAC_AUTH");
if(!t_relay()) {
sl_reply_error();
exit;
}

}

failure_route[UAC_AUTH] {

if(t_check_status("(4|5)[0|8][0|2|3|4|6|8]")){
    xlog("L_INFO","failover testing");
revert_uri();

route(FAILOVER);
    }

if (t_check_status("40[17]")) {
xlog("got challenged \n");
uac_auth();
xlog("L_INFO", "Return code is $retcode");
$rd = $avp(siptrunk_proxy);
t_on_failure("UAC_AUTH");
t_relay();
}

}

route[FAILOVER]{
xlog("L_INFO","doing failover now.. ");

if($avp(failover_routing_id)!=$null) {

$avp(outbound_routing_id)=$avp(failover_routing_id);
        xlog("L_INFO","Failover carrier credentials are..");
        route(GET_CREDENTIALS);

#not adding headers now
remove_hf_re("X-*");
append_hf("X-Src-IP: Trusted\r\n", "Call-ID");
append_hf("X-Identity: $hdr(X-Calling-User)\r\n", "Call-ID");
append_hf("X-Auth-ID: $avp(siptrunk_username)\r\n", "Call-ID");
$avp(realm) = $fd;
$rd = $avp(siptrunk_proxy);
$var(duri) = "sip:"+$rU+"@"+$avp(siptrunk_proxy);
$du = $var(duri);
xlog("L_INFO","Destination Uri from failover is : $du");
t_on_failure("UAC_AUTH2");
if(!t_relay()) {
sl_reply_error();
exit;
}

        exit;

}

}

failure_route[UAC_AUTH2] {

if(t_check_status("(4|5)[0|8][0|2|3|4|6|8]")){
xlog("L_INFO","Failover failed. cancelled call ");
exit;
}

if (t_check_status("40[17]")) {
xlog("got challenged \n");
uac_auth();
xlog("L_INFO", "Return code is $retcode");
$rd = $avp(siptrunk_proxy);
t_relay();
}

exit;
}

Thanking You,
Sunil More