#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <unistd.h>

#define HPDRC "hpdrc.cs.fiu.edu"
#define TIME_PORT "13"
#define BUF_SIZE 1024

int main( )
{
    struct addrinfo hints, *res;
    int sd;
    char buf[ BUF_SIZE ];
    int bytesRead;

    memset( &hints, 0, sizeof( hints ) );
    hints.ai_family = AF_INET; 
    hints.ai_socktype = SOCK_STREAM;

    if( getaddrinfo( HPDRC, TIME_PORT, &hints, &res ) )
    {
        fprintf( stderr, "Error invoking getaddrinfo\n" );
        return 2;
    }

    sd = socket( res->ai_family, res->ai_socktype, res->ai_protocol );
    
    if( sd < 0 )
    {
        fprintf( stderr, "Error creating socket\n" );
        return 3;
    }
    
    if( connect( sd, res->ai_addr, res->ai_addrlen ) < 0 )
    {
        fprintf( stderr, "Error connecting\n" );
        return 4;
    }
    
    freeaddrinfo( res ); // free the linked list
    
    bytesRead = recv( sd, buf, BUF_SIZE, 0 );
    
    if( bytesRead < 0 )
    {
        fprintf( stderr, "Error creating socket\n" );
        return 5;
    }
    
    write( 1, buf, bytesRead );
    
    close( sd );
    return 0;
}