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modified the BACnet/IP init code for the win32 platform to make it work on my system. It seems that something else is intercepting the packets when the bind was set to INADDR_ANY, so I just bind to the host default adapter.

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This commit is contained in:
skarg
2005-12-07 17:01:26 +00:00
parent b7321923af
commit ca72bf7f9f
7 changed files with 88 additions and 18 deletions
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bacnet-stack/ports/win32/bip-init.c
+36 -11
View File
@@ -80,6 +80,11 @@ static void set_broadcast_address(uint32_t net_address)
#endif
}
static void cleanup(void)
{
WSACleanup();
}
bool bip_init(void)
{
int rv = 0; // return from socket lib calls
@@ -92,7 +97,6 @@ bool bip_init(void)
struct in_addr address;
Result = WSAStartup(MAKEWORD(2,2), &wd);
if (Result != 0)
{
Code = WSAGetLastError();
@@ -100,6 +104,8 @@ bool bip_init(void)
Code);
exit(1);
}
atexit(cleanup);
address.s_addr = gethostaddr();
if (address.s_addr == (unsigned)-1)
{
@@ -116,7 +122,7 @@ bool bip_init(void)
sock_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
bip_set_socket(sock_fd);
if (sock_fd < 0)
return false;
return false;
// Allow us to use the same socket for sending and receiving
// This makes sure that the src port is correct when sending
@@ -124,25 +130,44 @@ bool bip_init(void)
(char *)&value, sizeof(value));
if (rv < 0)
{
close(sock_fd);
bip_set_socket(-1);
return false;
close(sock_fd);
bip_set_socket(-1);
return false;
}
// allow us to send a broadcast
rv = setsockopt(sock_fd, SOL_SOCKET, SO_BROADCAST,
(char *)&value, sizeof(value));
(char *)&value, sizeof(value));
if (rv < 0)
{
close(sock_fd);
bip_set_socket(-1);
return false;
close(sock_fd);
bip_set_socket(-1);
return false;
}
// bind the socket to the local port number and IP address
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_ANY);
/* by setting sin.sin_addr.s_addr to INADDR_ANY,
I am telling the IP stack to automatically fill
in the IP address of the machine the process
is running on.
Some server computers have multiple IP addresses.
A socket bound to one of these will not accept
connections to another address. Frequently you prefer
to allow any one of the computer's IP addresses
to be used for connections. Use INADDR_ANY (0L) to
allow clients to connect using any one of the host's
IP addresses.
Note: sometimes INADDR_ANY does not let me get
any unicast messages. Not sure why...
*/
/* sin.sin_addr.s_addr = htonl(INADDR_ANY); */
/* or we could use the specific adapter address
note: already in network byte order */
sin.sin_addr.s_addr = address.s_addr;
sin.sin_port = htons(bip_get_port());
memset(&(sin.sin_zero), '\0', 8);
memset(&(sin.sin_zero), '\0', sizeof(sin.sin_zero));
rv = bind(sock_fd,
(const struct sockaddr*)&sin, sizeof(struct sockaddr));
if (rv < 0)