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|
#if defined (WIN32)
#include <winsock2.h>
typedef size_t socklen_t;
#elif defined (linux)
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#define INVALID_SOCKET -1
#define SOCKET_ERROR -1
#define closesocket(s) close (s)
typedef int SOCKET;
typedef struct sockaddr_in SOCKADDR_IN;
typedef struct sockaddr SOCKADDR;
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ed/inc/sys.h"
#define PORT 23
#define LINESIZE 128
#define VALUE_SOCKETPORT PORT
#define VALUE_SOCKETSERVER IP
#define CfgValue(a) a
#define AscstrToInt(a) a
enum
{
OK,
ERROR_EXIT_SOCKET,
ERROR_DEBUG,
ERROR_INFO,
dummy
};
static void ErrorPrintf (int err, char const *fmt, ...)
{
va_list va;
va_start (va, fmt);
printf ("err #%d: ", err);
vprintf (fmt, va);
printf ("\n");
va_end (va);
}
#define SocketRead(a,b,c) recv (a,b,c,0)
void SocketServer (int (*funcp) (void *, int))
{
/* integers for the socket descriptors */
int sock, i;
#if 0
/* declare socket (file) descriptors sets for the select function below */
fd_set active_fd_set, read_fd_set;
struct in_addr *addr;
#endif
/* structures that will contain sockets addresses information (server, and clients) */
struct sockaddr_in name, clientname;
socklen_t size;
static char buffer[LINESIZE];
int nbbytes;
int port = AscstrToInt (CfgValue (VALUE_SOCKETPORT));
/* Create the listening socket of the server and set it up to accept connections. */
name.sin_family = AF_INET;
name.sin_port = htons (port);
/* automatic IP address */
name.sin_addr.s_addr = htonl (INADDR_ANY);
/* Create the socket. */
sock = socket (PF_INET, SOCK_STREAM, 0);
if (sock < 0)
ErrorPrintf (ERROR_EXIT_SOCKET, "Cannot open socket: %s (%d)",
strerror (errno), errno);
/* Give the socket a name (bind) */
if (bind (sock, (struct sockaddr *) &name, sizeof name) < 0)
ErrorPrintf (ERROR_EXIT_SOCKET, "Cannot bind socket: %s (%d)",
strerror (errno), errno);
/* End of listening socket creation and binding */
if (listen (sock, 1) < 0)
ErrorPrintf (ERROR_EXIT_SOCKET, "Cannot listen to socket");
#if 0
/* -ed- cet algo ne peut pas fonctionner avec Windows.) */
/* Initialize the set of active sockets. */
/* active_fd_set is initialized to be the empty file descriptor set */
FD_ZERO (&active_fd_set);
/* adds "sock" to the socket descriptor set activ_fd_set */
FD_SET (sock, &active_fd_set);
while (1)
{
/* Block until input arrives on one or more active sockets. */
read_fd_set = active_fd_set;
/* returns the number of descriptor in which input arrives */
printf ("before select()\n");
if (select (FD_SETSIZE, &read_fd_set, NULL, NULL, NULL) < 0)
ErrorPrintf (ERROR_EXIT_SOCKET, "Cannot select socket");
/* Service all the sockets with input pending. */
for (i = 0; i < FD_SETSIZE; ++i)
{
if (!(FD_ISSET (i, &read_fd_set)))
/* descriptor i is not a pending connexion */
continue;
if (i == sock)
{
/* Connection request on original socket. */
int new;
size = sizeof (clientname);
new = accept (sock, (struct sockaddr *) &clientname, &size);
if (new < 0)
ErrorPrintf (ERROR_EXIT_SOCKET,
"Cannot accept new connection on soket");
ErrorPrintf (ERROR_INFO,
"Server: receive connect from host %s, port %hd.\n",
inet_ntoa (clientname.sin_addr),
ntohs (clientname.sin_port));
/* adds "new" to the socket descriptor set activ_fd_set */
FD_SET (new, &active_fd_set);
}
else
{
/* Data arriving on an already-connected socket. */
nbbytes = SocketRead (i, buffer, LINESIZE);
/* Nothing is left to reveive on socket i, we close the connexion on i, then we delete from the socket descriptor set */
if (nbbytes <= 0)
{
closesocket (new);
FD_CLR (i, &active_fd_set);
continue;
}
/* to upper layer */
if (funcp)
{
funcp (buffer, nbbytes);
}
}
/* for */
}
/* while */
}
#else
/* faisons simple (mono-client, pour le moment) */
{
int new;
size = sizeof (clientname);
new = accept (sock, (struct sockaddr *) &clientname, &size);
if (new < 0)
ErrorPrintf (ERROR_EXIT_SOCKET,
"Cannot accept new connection on soket");
else
{
ErrorPrintf (ERROR_INFO,
"Server: receive connect from host %s, port %hd.\n",
inet_ntoa (clientname.sin_addr),
ntohs (clientname.sin_port));
int end = 0;
while (!end)
{
/* Data arriving on an already-connected socket. */
nbbytes = SocketRead (new, buffer, LINESIZE - 1);
/* Nothing is left to reveive on socket i, we close the connexion on i, then we delete from the socket descriptor set */
if (nbbytes <= 0)
{
closesocket (new);
end = 1;
}
else
{
/* to upper layer */
if (funcp)
{
funcp (buffer, nbbytes);
}
}
}
}
}
#endif
}
void data_process (void *p, int size)
{
if (p != NULL && size > 0)
{
char *s = p;
s[size] = 0;
printf ("< '%s'\n", s);
}
}
int main (void)
{
#if defined (WIN32)
WSADATA WSAData;
int erreur = WSAStartup (MAKEWORD (2, 0), &WSAData);
#else
int erreur = 0;
#endif
SocketServer (data_process);
#if defined (WIN32)
WSACleanup ();
#endif
system ("pause");
return 0;
} |
Souci de binding de socket
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Envoyé par Mayhem555
Cafuro est un outil SNMP dont le but est d'aider les administrateurs système et réseau à configurer leurs équipements SNMP réseau.
Mais merci beaucoup en tout cas !
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