Solve the problem of recognizing the local SIP msg

We need a consistent and solid way to recognize the internanlly generated SIP msg (as a result of t_uac) - these are msg structs resulted from the parsing of buffers with SIP msgs

modules/tm/t_msgbuilder.h

@@ -124,6 +124,8 @@ static inline struct sip_msg* buf_to_sip_msg(char *buf, unsigned int len,
 	req->rcv.src_port = req->rcv.dst_port = dialog->send_sock->port_no;
 	req->rcv.bind_address = dialog->send_sock;
 
+	req->flags |= FL_IS_LOCAL;
+
 	return req;
 
 error1:

modules/topology_hiding/topo_hiding_logic.c

@@ -1076,7 +1076,7 @@ static void topo_dlg_onroute (struct dlg_cell* dlg, int type,
 	/* we also may end up here via TERMINATE event triggered by internal
 	 * dlg termination -> the requests we have here are dummy, so nothing
 	 * to be done */
-	if (is_dummy_sip_msg(req)==0) {
+	if ((req->flags&FL_IS_LOCAL)!=0 || is_dummy_sip_msg(req)==0) {
 		LM_DBG("dummy request identified, skipping...\n");
 		return;
 	}

parser/msg_parser.h

@@ -124,6 +124,8 @@ enum request_method {
                                       * route */
 #define FL_TM_REPLICATED	 (1<<19) /* message received due to a tm replication */
 #define FL_BODY_NO_SDP       (1<<20) /* message does not have an SDP body */
+#define FL_IS_LOCAL          (1<<21) /* the message is a locally generated
+                                      * one, not received */
 
 /* define the # of unknown URI parameters to parse */
 #define URI_MAX_U_PARAMS 10