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implement sendreceive()

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Flavien Haas 2019-10-30 08:24:54 +01:00
parent 40df2fba19
commit 59186f5371
1 changed files with 33 additions and 28 deletions
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61
client_echo.c
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@ -8,7 +8,7 @@
#define BUF_SIZE 500
struct addrinfo *result; // tableau des adresses réseaux des serveurs
struct addrinfo *result; // tableau des adresses réseaux des serveurs
int cree_socket(char* ip, char* port, struct addrinfo hints){
int s = getaddrinfo(ip, port, &hints, &result);
@ -43,30 +43,47 @@ void con_serveur(int *sfd){
}
}
void sendreceive(char* argtemp, size_t len, int j, int sfd){
char buf[BUF_SIZE];
ssize_t nread;
/* Send remaining command-line arguments as separate
datagrams, and read responses from server */
if (len + 1 > BUF_SIZE) {
fprintf(stderr, "Ignoring long message in argument %d\n", j);
}
if (write(sfd, argtemp, len) != len) {
fprintf(stderr, "partial/failed write\n");
exit(EXIT_FAILURE);
}
nread = read(sfd, buf, BUF_SIZE);
if (nread == -1) {
perror("read");
exit(EXIT_FAILURE);
}
printf("Received %ld bytes: %s\n", (long) nread, buf);
}
int main(int argc, char *argv[]) {
struct addrinfo hints;
int sfd, s, j;
size_t len;
ssize_t nread;
char buf[BUF_SIZE];
char* argtemp;
if (argc < 3) { // vérification du nombre d'arguments rentrés
if (argc < 3) { // vérification du nombre d'arguments rentrés
fprintf(stderr, "mettre: %s ip port message\n", argv[0]);
exit(EXIT_FAILURE);
}
char* ip = argv[1];
char* port = argv[2];
char* message = argv[3]; // remplissage des varables a partir des arguments passés au programme
char* message = argv[3]; // remplissage des varables a partir des arguments passés au programme
/* Obtain address(es) matching host/port */
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */
hints.ai_socktype = SOCK_DGRAM; /* Datagram socket */
hints.ai_flags = 0;
hints.ai_protocol = 0; /* Any protocol */
hints.ai_family = AF_UNSPEC; // utilisation du serveur sur IPv4/v6 (AF_INET/AF_INET6)
hints.ai_socktype = SOCK_DGRAM; // socket en mode datagramme
s = cree_socket(ip, port, hints); // création du socket
s = cree_socket(ip, port, hints); // création du socket
if(s == 1) {
exit(EXIT_FAILURE);
}
@ -75,26 +92,14 @@ int main(int argc, char *argv[]) {
freeaddrinfo(result); /* No longer needed */
/* Send remaining command-line arguments as separate
datagrams, and read responses from server */
for (j = 3; j < argc; j++) {
for (j = 3; j < argc; j++) { // récupère les mots passés en arguments
len = strlen(argv[j]) + 1;
argtemp = argv[j];
/* +1 for terminating null byte */
if (len + 1 > BUF_SIZE) {
fprintf(stderr, "Ignoring long message in argument %d\n", j);
continue;
}
if (write(sfd, argv[j], len) != len) {
fprintf(stderr, "partial/failed write\n");
exit(EXIT_FAILURE);
}
nread = read(sfd, buf, BUF_SIZE);
if (nread == -1) {
perror("read");
exit(EXIT_FAILURE);
}
printf("Received %ld bytes: %s\n", (long) nread, buf);
sendreceive(argv[j], len, j, sfd);
}
exit(EXIT_SUCCESS);
}