adding BVLC support - not working yet.

bacnet-stack/bip.c

@@ -51,6 +51,11 @@ void bip_set_socket(int sock_fd)
     BIP_Socket = sock_fd;
 }
 
+int bip_socket(void)
+{
+    return BIP_Socket;
+}
+
 bool bip_valid(void)
 {
     return (BIP_Socket != -1);
@@ -248,7 +253,7 @@ uint16_t bip_receive(BACNET_ADDRESS * src,      /* source address */
     /* the signature of a BACnet/IP packet */
     if (buf[0] != BVLL_TYPE_BACNET_IP)
         return 0;
-    if ((buf[1] == BVLC_ORIGINAL_UNICAST_NPDU) || 
+    if ((buf[1] == BVLC_ORIGINAL_UNICAST_NPDU) ||
       (buf[1] == BVLC_ORIGINAL_BROADCAST_NPDU)) {
         /* ignore messages from me */
         if (sin.sin_addr.s_addr == BIP_Address.s_addr)
@@ -275,7 +280,7 @@ uint16_t bip_receive(BACNET_ADDRESS * src,      /* source address */
     }
     #ifdef BBMD_ENABLED
     if (buf[1] < MAX_BVLC_FUNCTION) {
-      bbmd_handler(&buf[0], received_bytes, &sin); 
+      bbmd_handler(&buf[0], received_bytes, &sin);
     }
     #endif