refactored the BACnet/IP for each of the ports

2005-08-12 15:44:42 +00:00
parent 81ce0fef85
commit bc21625461
14 changed files with 373 additions and 440 deletions
@@ -0,0 +1,91 @@
+/*####COPYRIGHTBEGIN####
+ -------------------------------------------
+ Copyright (C) 2005 Steve Karg
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to:
+ The Free Software Foundation, Inc.
+ 59 Temple Place - Suite 330
+ Boston, MA  02111-1307, USA.
+
+ As a special exception, if other files instantiate templates or
+ use macros or inline functions from this file, or you compile
+ this file and link it with other works to produce a work based
+ on this file, this file does not by itself cause the resulting
+ work to be covered by the GNU General Public License. However
+ the source code for this file must still be made available in
+ accordance with section (3) of the GNU General Public License.
+
+ This exception does not invalidate any other reasons why a work
+ based on this file might be covered by the GNU General Public
+ License.
+ -------------------------------------------
+####COPYRIGHTEND####*/
+
+#include <stdint.h>             // for standard integer types uint8_t etc.
+#include <stdbool.h>            // for the standard bool type.
+#include "bacdcode.h"
+#include "bip.h"
+#include "net.h"
+
+bool bip_init(void)
+{
+    int status = 0; // return from socket lib calls
+    struct sockaddr_in sin;
+    int sockopt = 0;
+    int sock_fd = -1;
+
+    // assumes that the driver has already been initialized
+    sock_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+    bip_set_socket(sock_fd);
+    if (sock_fd < 0)
+        return false;
+    // Allow us to use the same socket for sending and receiving
+    // This makes sure that the src port is correct when sending
+    sockopt = 1;
+    status = setsockopt(sock_fd, SOL_SOCKET, SO_REUSEADDR,
+        &sockopt, sizeof(sockopt));
+    if (status < 0)
+    {
+        close(sock_fd);
+        bip_set_socket(-1);
+        return status;
+    }
+    // allow us to send a broadcast
+    status = setsockopt(sock_fd, SOL_SOCKET, SO_BROADCAST,
+        &sockopt, sizeof(sockopt));
+    if (status < 0)
+    {
+        close(sock_fd);
+        bip_set_socket(-1);
+        return status;
+    }
+
+    // bind the socket to the local port number and IP address
+    sin.sin_family = AF_INET;
+    sin.sin_addr.s_addr = htonl(INADDR_ANY);
+    sin.sin_port = bip_get_port();
+    memset(&(sin.sin_zero), '\0', 8);
+    status = bind(sock_fd,
+        (const struct sockaddr*)&sin, sizeof(struct sockaddr));
+    if (status < 0)
+    {
+        close(sock_fd);
+        bip_set_socket(-1);
+        return false;
+    }
+
+    return true;
+}
+
+