client

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
#include <time.h>

int main () {
    int descrittoreSocket;
    descrittoreSocket = socket(AF_INET, SOCK_STREAM, 0);

    struct sockaddr_in address;
    address.sin_family = AF_INET;
    address.sin_port = htons(2770);
    address.sin_addr.s_addr = INADDR_ANY;
    printf ("Connessione in corso...\n");
    int ris;
    ris = connect(descrittoreSocket, (struct sockaddr*) &address, (socklen_t) sizeof(address));

    fd_set fd;
    FD_ZERO(&fd);
    FD_SET(descrittoreSocket, &fd);
    struct timeval timer;
    timer.tv_sec = 1;
    timer.tv_usec = 0;

    if ((ris > -1) && select(descrittoreSocket+1, NULL, &fd, NULL, &timer) >= 0 && FD_ISSET(descrittoreSocket, &fd)) {
        printf ("Connessione avvenuta...\n");
        char buffer_r [512];
        char buffer_w [512];
        char command [15];
        gets(command);
        gets(buffer_r);
        send(descrittoreSocket, command, 15, 0);
        printf("Spedito!");
        fflush(stdout);
        send(descrittoreSocket, buffer_w, 512, 0);
        printf("Spedito!");
        fflush(stdout);
        recv(descrittoreSocket, buffer_r, 512, 0);
        printf("Trasferito!");
        fflush(stdout);
        if (strcmp("error", buffer_r) == 0)
            printf ("ERROR!");
        printf ("%s", buffer_r);
        fflush(stdout);
    } else {
        printf ("Impossibile servire il client\n");
    }
        close (descrittoreSocket);
        exit(0);
}