client.c

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include "utils.h"
#include "conn.h"
//Librerie per i socket:
#include <sys/socket.h>
#include <sys/un.h>

#define DIM_BUFFER 256


int main()
{
    int fdSkt;
    //Creazione socket - si usano (quasi) sempre questi parametri
    RETURN_SYSCALL(fdSkt, socket(AF_UNIX, SOCK_STREAM, 0), "Errore creazione socket - fdSkt")


    //Connect
    //sckAddr deve essere uguale a quello del server
    struct sockaddr_un sckAddr;
    strncpy(sckAddr.sun_path, SOCKNAME, 108);
    sckAddr.sun_family = AF_UNIX;

    //il socket potrebbe non aver ancora fatto la listen (per via dello scheduler)
    //il prof nelle correzioni mette solamente: SYSCALL(connect(fdSkt, (struct sockaddr *) &sckAddr, sizeof(sckAddr)), "")
    while(connect(fdSkt, (struct sockaddr *) &sckAddr, sizeof(sckAddr)) == -1)
    {
        if(errno != ENOENT)
        {
            perror("Errore connect - fdSkt");
            exit(EXIT_FAILURE);
        }
    }

    while (1)
    {
        char buffer[DIM_BUFFER];
        memset(buffer, '\0', DIM_BUFFER);
        SCANF_STRINGA(buffer);

        if(strncmp(buffer, "quit", strlen("quit")) == 0)
            break;

        int lenghtBuffer = strlen(buffer)+1;
        SYSCALL(writen(fdSkt, buffer, lenghtBuffer), "Errore: writen(fdSkt, buffer, strlen(buffer)+1)")
        SYSCALL(readn(fdSkt, buffer, lenghtBuffer), "Errore: writen(fdSkt, buffer, strlen(buffer)+1)")
        printf("%s\n", buffer);

    }

    SYSCALL(close(fdSkt), "Errore close - fdSkt")

    return 0;
}