ppr_klient_w_c_ONE

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>      // inet_ntoa
#include <time.h>           // time
//======================================================================
int error( int ern, const char *err ){
    perror( err );
    return ern;
}
//======================================================================
int main( void )
{
    /* zmienne predefiniowane *****************************************/
    int     port   = 12345;
    char    host[] = "192.168.10.150";
    /* zmienne niezainicjowane ****************************************/
    int     fd, n;
    struct  sockaddr_in serv_addr;
    struct  hostent *server;
    char    buffer[256];

    /* tworzymy gniazdo ***********************************************/
    fd = socket(AF_INET, SOCK_STREAM, 0);

    if (fd < 0)
        return error( 1, "socket()");

    /* pobieramy informacje o serwerze ********************************/
    server = gethostbyname( host );

    if( server == NULL )
        return error( 2, "gethostbyname()" );

    /* zapelniamy strukture zerami (inicjujemy) ***********************/
    bzero((char *) &serv_addr, sizeof(serv_addr));

    /* przypisujemy parametry *****************************************/
    serv_addr.sin_family = AF_INET;         // typ gniazda
    serv_addr.sin_port = htons(port);       // port

    bcopy( (char *) server->h_addr, (char *) &serv_addr.sin_addr.s_addr, server->h_length );

    /* nawiazujemy polaczenie *****************************************/
    if( connect( fd, (struct sockaddr *) &serv_addr, sizeof( serv_addr ) ) < 0 )
        return error( 3, "connect()" );


    /* zerujemy bufor *************************************************/
    bzero( buffer, 256 );


            /* przekazujemy serwerowi informacje o biezacym czasie ****/
            //sprintf( buffer, "Current time: %d", (int) time( NULL ) );
            //sprintf(buffer, "%d", 21);
            buffer[0] = 'z';
            buffer[1] = 'b';
            n = write( fd, buffer, 2 );
            if( n < 0 )     // sprawdzamy, czy wystapil blad ....
                perror( "write()" );


    /* konczymy polaczenie ********************************************/
    close(fd);

    //------------------------------------------------------------------
    return 0;
}
//======================================================================