process auth for REFER

* REFER fires a route request

kamailio/auth.cfg

@@ -2,6 +2,8 @@
 
 route[AUTH]
 {
+   xavp_rm("hf");
+
    if (!is_method("INVITE|MESSAGE|REFER")) {
       return;
    }
@@ -17,7 +19,7 @@ route[AUTH_HEADERS]
 {
    remove_hf_re("^X-");
 
-   if (!is_method("INVITE|MESSAGE|REFER") || has_totag()) {
+   if (!is_method("INVITE|MESSAGE|REFER")) {
         return;
    }
 

kamailio/default.cfg

@@ -507,7 +507,10 @@ route[HANDLE_REFER]
     }
     $xavp(regcfg=>match_received) = $su;
     if(registered("location", "$rz:$Au", 2, 1) == 1) {
-        $var(referred_by) = $_s($var(referred_by);endpoint_id=$(xavp(ulattrs=>token){re.subst,/(.*)@(.*)/\1/});account_id=$(xavp(ulattrs=>token){re.subst,/(.*)@(.*)/\2/}));
+        route(AUTH);
+        if($avp(is_registered) = "true") {
+           $var(referred_by) = $_s($var(referred_by);endpoint_id=$(xavp(ulattrs=>token){re.subst,/(.*)@(.*)/\1/});account_id=$(xavp(ulattrs=>token){re.subst,/(.*)@(.*)/\2/}));
+        }
     }
 
     remove_hf_re("^Referred-By");
@@ -663,7 +666,7 @@ branch_route[MANAGE_BRANCH] {
 
 route[RELAY]
 {
-    if (is_method("INVITE|BYE|SUBSCRIBE|UPDATE|NOTIFY")) {
+    if (is_method("INVITE|BYE|SUBSCRIBE|UPDATE|NOTIFY|REFER")) {
         if(!t_is_set("branch_route")) t_on_branch("MANAGE_BRANCH");
     }