bacnet-stack/demo/handler/s_router.c

@@ -0,0 +1,86 @@
+/**************************************************************************
+*
+* Copyright (C) 2005 Steve Karg <skarg@users.sourceforge.net>
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to deal in the Software without restriction, including
+* without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to
+* permit persons to whom the Software is furnished to do so, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*
+*********************************************************************/
+#include <stddef.h>
+#include <stdint.h>
+#include <errno.h>
+#include <string.h>
+#include "config.h"
+#include "config.h"
+#include "txbuf.h"
+#include "bacdef.h"
+#include "bacdcode.h"
+#include "address.h"
+#include "tsm.h"
+#include "npdu.h"
+#include "apdu.h"
+#include "device.h"
+#include "datalink.h"
+/* some demo stuff needed */
+#include "handlers.h"
+#include "txbuf.h"
+
+/* find a specific device, or use -1 for limit if you want unlimited */
+void Send_WhoIsRouterToNetwork(
+    int dnet)
+{
+    int len = 0;
+    int pdu_len = 0;
+    BACNET_ADDRESS dest;
+    int bytes_sent = 0;
+    BACNET_NPDU_DATA npdu_data;
+
+    /* encode the NPDU portion of the packet */
+    npdu_data.data_expecting_reply = false;
+    npdu_data.protocol_version = BACNET_PROTOCOL_VERSION;
+    npdu_data.network_layer_message = true; /* false if APDU */
+    npdu_data.network_message_type = NETWORK_MESSAGE_WHO_IS_ROUTER_TO_NETWORK;      
+    npdu_data.vendor_id = 0;       /* optional, if net message type is > 0x80 */
+    npdu_data.priority = MESSAGE_PRIORITY_NORMAL;
+    npdu_data.hop_count = 0;
+    pdu_len =
+        npdu_encode_pdu(&Handler_Transmit_Buffer[0], NULL, NULL, &npdu_data);
+    /* encode the optional DNET portion of the packet */
+    if (dnet >= 0) {
+        len = encode_unsigned16(&Handler_Transmit_Buffer[pdu_len], dnet);
+        pdu_len += len;
+#if PRINT_ENABLED
+        fprintf(stderr, "Send Who-Is-Router-To-Network Request to %u\n",dnet);
+#endif
+    } else {
+#if PRINT_ENABLED
+        fprintf(stderr, "Send Who-Is-Router-To-Network Request\n");
+#endif
+    }
+    /* Who-Is-Router-To-Network is a global broadcast */
+    datalink_get_broadcast_address(&dest);
+    bytes_sent =
+        datalink_send_pdu(&dest, &npdu_data, &Handler_Transmit_Buffer[0],
+        pdu_len);
+#if PRINT_ENABLED
+    if (bytes_sent <= 0)
+        fprintf(stderr, "Failed to Send Who-Is-Router-To-Network Request (%s)!\n",
+            strerror(errno));
+#endif
+}