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#include <stdio.h>
#include <stdlib.h>
#ifdef WIN32
#include <winsock2.h>
#else
#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(param) close(param)
typedef int SOCKET;
typedef struct sockaddr_in SOCKADDR_IN;
typedef struct sockaddr SOCKADDR;
#endif
#define PORT 23
#if 0
/* client */
int main_ (void)
{
SOCKET sock_client;
char buffer[30];
SOCKADDR_IN sin = { 0 };
int rec;
int error;
sock_client = socket (AF_INET, SOCK_STREAM, 0);
if (sock_client != INVALID_SOCKET)
{
printf ("aucun probleme dans la fonction socket\n");
sin.sin_addr.s_addr = inet_addr ("127.0.0.1");
sin.sin_family = AF_INET;
sin.sin_port = htons (PORT);
error = connect (sock_client, (SOCKADDR *) & sin, sizeof (sin));
if (error == 0)
{
printf ("aucun probleme dans la fonction connect\n");
rec = recv (sock_client, buffer, sizeof (buffer) - 1, 0);
if (rec > 0)
{
buffer[rec] = 0;
printf ("%s\n", buffer);
}
}
else
{
printf ("connect() error\n");
}
}
closesocket (sock_client);
//-------------------------------------------------------------------------fin du code non minimal----------------------------------------
return EXIT_SUCCESS;
}
#else
/* serveur */
int main_ (void)
{
SOCKET sock = socket (AF_INET, SOCK_STREAM, 0);
if (sock != INVALID_SOCKET)
{
SOCKADDR_IN sin = { 0 };
printf ("socket serveur = %d\n", sock);
sin.sin_addr.s_addr = htonl (INADDR_ANY);
sin.sin_family = AF_INET;
sin.sin_port = htons (PORT);
{
int err = bind (sock, (SOCKADDR *) & sin, sizeof (sin));
if (err != SOCKET_ERROR)
{
printf ("bind() OK\n");
err = listen (sock, 5);
if (err != SOCKET_ERROR)
{
printf ("listen() OK\n");
int fin = 0;
while (!fin)
{
SOCKADDR_IN sin_cli = { 0 };
int taille = (int) sizeof sin_cli;
SOCKET sock_client;
printf ("listening on port %d\n", (int) ntohs(sin.sin_port));
sock_client= accept (sock, (SOCKADDR *) & sin_cli, &taille);
if (sock_client != INVALID_SOCKET)
{
printf ("socket client = %d\n", sock_client);
{
char const *buffer = "buffer\r\n";
int n = send (sock_client, buffer, strlen (buffer), 0);
printf ("%d bytes emis\n", n);
fin = 1;
}
}
}
}
}
}
}
closesocket (sock);
return EXIT_SUCCESS;
}
#endif
int main (void)
{
int ret;
#if defined (WIN32)
WSADATA wsa_data;
int err = WSAStartup (MAKEWORD (2, 2), &wsa_data);
if (!err)
{
puts ("WIN: winsock2: OK");
#else
int err;
#endif
main_ ();
#if defined (WIN32)
WSACleanup ();
}
#endif
if (err)
{
ret = EXIT_FAILURE;
}
else
{
ret = EXIT_SUCCESS;
}
return ret;
} |
