#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netdb.h>
#include "/usr/include/x86_64-linux-gnu/sys/types.h"
#include <netinet/in.h>
#include "/usr/include/x86_64-linux-gnu/sys/socket.h"
#include <arpa/inet.h>

//# define SERVER_PORT 8000
# define LENGTH_OF_LISTEN_QUEUE 20
# define BUFFER_SIZE 1024
# define FILE_NAME_MAX_SIZE 512