Added routing support for virtual network so that source addresses are transmitted when required and the correct object ID is used.

bacnet-stack/demo/handler/s_whois.c

@@ -65,12 +65,21 @@ void Send_WhoIs_To_Network(
     int pdu_len = 0;
     int bytes_sent = 0;
     BACNET_NPDU_DATA npdu_data;
+#if BAC_ROUTING
+    BACNET_ADDRESS my_address;
 
+    my_address = *Get_Routed_Device_Address(-1);
+#endif
     /* encode the NPDU portion of the packet */
     npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
+
+#if BAC_ROUTING
     pdu_len =
-        npdu_encode_pdu(&Handler_Transmit_Buffer[0], target_address, NULL,
-        &npdu_data);
+        npdu_encode_pdu(&Handler_Transmit_Buffer[0], target_address, &my_address, &npdu_data);
+#else
+    pdu_len =
+        npdu_encode_pdu(&Handler_Transmit_Buffer[0], target_address, NULL, &npdu_data);
+#endif
     /* encode the APDU portion of the packet */
     len =
         whois_encode_apdu(&Handler_Transmit_Buffer[pdu_len], low_limit,