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| #include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <string.h>
#define MYPORT 3490 /* Le port ou les utilisateurs se =connecteront */
#define BACKLOG 10 /* Nombre maxi de connections acceptees en file */
#define MAXDATASIZE 200 /* Tampon d'entree */
main()
{
//variables nécessaires Ã* la préparation du message Ã* envoyer
char mess[] = "Hello, num ";
int len = strlen(mess) +50;
char buf_mess[len];
int cpt = 0;
char buf[MAXDATASIZE];
//vairable client serveur
int sockfd, new_fd, numbytes; /* Ecouter sock_fd, nouvelle connection sur new_fd */
struct sockaddr_in my_addr; /* Adresse */
struct sockaddr_in their_addr; /* Adresse du connecte */
int sin_size;
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("socket");
exit(1);
}
my_addr.sin_family = AF_INET; /* host byte order */
my_addr.sin_port = htons(MYPORT); /* short, network byte order */
my_addr.sin_addr.s_addr = INADDR_ANY; /* auto-remplissage avec mon IP */
//bzero(&(my_addr.sin_zero), 8); /* zero pour le reste =de struct */
if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1)
{
perror("bind");
exit(1);
}
if (listen(sockfd, BACKLOG) == -1)
{
perror("listen");
exit(1);
}
while(1)
{ /* main accept() loop */
sin_size = sizeof(struct sockaddr_in);
if ((new_fd = accept(sockfd, (struct sockaddr *)&their_addr, &sin_size)) == -1)
{
perror("accept");
continue;
}
printf("serveur: Recu connection de %s\n", inet_ntoa(their_addr.sin_addr));
if (!fork())
{ /* processus fils */
cpt = cpt + 1;
//construction du message Ã* envoyer
snprintf(buf_mess, len, "%s %d", mess, cpt);
//envoi du message
if (send(new_fd, buf_mess, 14, 0) == -1)
perror("send");
close(new_fd);
exit(0);
}
if ((numbytes=recv(new_fd, buf, MAXDATASIZE, 0)) == -1)
{
perror("recv");
exit(1);
}
buf[numbytes] = '\0';
printf("Recu: %s\n",buf);
close(new_fd); /* Le parent n'a pas besoin de cela */
while(waitpid(-1,NULL,WNOHANG) > 0); /* Nettoyage des processus fils */
}
} |
