nat traversal role for presence (#140)

* add nat_traversal to presence

* adjust dev time timer

* add KAZOO_DATA_DIR

* remove PRESENCE_NAT role

kamailio/defs.cfg

@@ -3,8 +3,12 @@
 
 ####### defs ########
 
+#!ifndef KAZOO_DATA_DIR
+#!substdef "!KAZOO_DATA_DIR!/etc/kazoo/kamailio/dbtext!g"
+#!endif
+
 #!ifndef KAZOO_DB_URL
-#!substdef "!KAZOO_DB_URL!text:///etc/kazoo/kamailio/dbtext!g"
+#!substdef "!KAZOO_DB_URL!text://KAZOO_DATA_DIR!g"
 #!endif
 
 #!ifndef MAX_WHILE_LOOPS

kamailio/presence-role.cfg

@@ -33,13 +33,52 @@ modparam("presence", "xavp_cfg", "pres")
 modparam("kazoo", "db_url", "KAZOO_DB_URL")
 modparam("kazoo", "pua_mode", 1)
 
+#!ifdef NAT_TRAVERSAL_ROLE
+#!ifndef NAT_TRAVERSAL_LOADED
+#!trydef NAT_TRAVERSAL_LOADED
+loadmodule "nat_traversal.so"
+#!endif
+modparam("nat_traversal", "keepalive_method", "OPTIONS")
+modparam("nat_traversal", "keepalive_from", "sip:sipcheck@MY_HOSTNAME")
+modparam("nat_traversal", "keepalive_state_file", "KAZOO_DATA_DIR/keep_alive_state")
+modparam("nat_traversal", "keepalive_interval", 60)
+#!endif
+
+route[PRESENCE_NAT]
+{
+    if (client_nat_test("3")) {
+        fix_contact();
+        nat_keepalive();
+        force_rport();
+    }
+}
+
+route[PRESENCE_CHECK_NAT]
+{
+#!ifdef REGISTRAR_ROLE
+    $xavp(regcfg=>match_received) = $su;
+    xlog("L_INFO", "$ci|check|checking if $fU is registered\n");
+    if(registered("location", "$rz:$fU", 2, 1)) {
+       ## is registered, keep alive handled in registrar
+      route(NAT_TEST_AND_CORRECT);
+       return;
+    } else {
+      route(PRESENCE_NAT);
+    }
+#!else
+    route(PRESENCE_NAT);
+#!endif
+
+}
+
 ####### Presence Logic ########
 route[HANDLE_SUBSCRIBE]
 {
     if (is_method("SUBSCRIBE")) {
-        #!ifdef NAT_TRAVERSAL_ROLE
-        route(NAT_TEST_AND_CORRECT);
-        #!endif
+
+    #!ifdef NAT_TRAVERSAL_ROLE
+      route(PRESENCE_CHECK_NAT);
+    #!endif
 
         if ($tU == $null) {
             xlog("L_INFO", "$ci|stop|ignoring subscribe with empty TO username from a $ua\n");