pusher nat handling

* needs setting MANAGE_BRANCH for nat

kamailio/pusher-role.cfg

@@ -15,6 +15,7 @@ route[PUSHER_ROUTE]
            $fs = $(ulc(callee=>socket));
            xlog("L_INFO", "$ci|pusher|routing $hdr(X-KAZOO-AOR) to contact $du\n");
            send_reply(100, "calling a push device");
+           t_set_fr(0, 2000);
            route(PUSHER_TO_EXTERNAL_RELAY);
         } else {
            send_reply(100, "waking the push device");
@@ -27,13 +28,16 @@ route[PUSHER_ROUTE]
 route[PUSHER_TO_EXTERNAL_RELAY]
 {
     remove_hf_re("^X-.*");
-    t_set_fr(0, 2000);
+    set_forward_no_connect();
+    t_on_branch("MANAGE_BRANCH");
+    t_on_reply("EXTERNAL_REPLY");
+    t_on_failure("PUSHER_EXTERNAL_FAULT");
     t_relay();
 }
 
 failure_route[PUSHER_EXTERNAL_FAULT]
 {
-    if (!t_check_status("486|487|603") && $avp(push_sent) != 1) {
+    if (!t_check_status("408|486|487|603") && $avp(push_sent) != 1) {
        send_reply(182, "waking the dead guy");
        route(PUSHER_SEND_PUSH_NOTIFICATION);
     } else if (t_check_status("487")) {
@@ -48,11 +52,8 @@ failure_route[PUSHER_EXTERNAL_FAULT]
 route[PUSHER_PREPARE_PUSH]
 {
     if (t_newtran()) {
-          t_set_fr(20000, 20000);
           route(PUSHER_PREPARE_PUSH_PAYLOAD);
           remove_hf_re("^X-.*");
-          t_on_reply("EXTERNAL_REPLY");
-          t_on_failure("PUSHER_EXTERNAL_FAULT");
           t_save_lumps();
           t_set_auto_inv_100(0);
           return 1;
@@ -180,6 +181,7 @@ route[PUSHER_DELIVER_CALL]
     if(reg_fetch_contacts("location", "$hdr(X-KAZOO-AOR)", "callee")) {
        $du = $(ulc(callee=>received));
        $fs = $(ulc(callee=>socket));
+       t_set_fr(30000, 30000);
        route(PUSHER_TO_EXTERNAL_RELAY);
     } else {
        t_reply(486, "Failed to lookup after resume");