// This will not run (properly) under MSDOS

// Header files

#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <iostream.h>


// Server application using sockets

int main (int argc, char * argv[])
{
    // Determine the program parameter

    if (argc != 2) {
        cerr << "Usage: isprime <number>" << endl;
        return 1;
    }

    int number = atoi(argv[1]);

  // Create the socket

    int sid = socket(AF_UNIX, SOCK_STREAM, 0);

    // Connect

    struct sockaddr sa;

    sa.sa_family = AF_UNIX;
    strcpy(sa.sa_data, "prime");
    if (connect(sid, &sa, sizeof(sa.sa_family) + sizeof("prime")) == 0)
        cout << "Client: connected to server " << endl;
    else {
        cerr << "No available server" << endl;
        return 1;
    }

    // Send the request

    cout << "Client: sending, isprime(" << number << ") ?" << endl;
    send(sid, &number, sizeof(number), 0);

  // Receive the result

    int prime;

    recv(sid, &prime, sizeof(prime), 0);
    cout << "Client: received, isprime(" << number << ") = "
         << (prime ? "true" : "false") << endl;

  // Shut down the connection and close the socket

    cout << "Client: shuting down the connection " << sa.sa_data << endl;

    shutdown(sid, 2);
    close(sid);

    return 0;
}