/* Mehdi and Jasmine DNS and Echo code 2018 */
/* This is the set of libraries they used, man getaddrinfo shows others */

#include <arpa/inet.h>     /*   */
#include <netinet/in.h>
#include <sys/socket.h>    /* getaddrinfo will create a socket to work */
#include <netdb.h>         /* needed for getaddrinfo */
#include <stdio.h>         /* Provides the core i/o capabilities, also printf */
#include <string.h>        /* For manipulating serveral types of strings */
#include <stdbool.h>       /* For a boolean data type */
#include <stdlib.h>        /* memory alloc, process control, signals, search, sort */

bool check_IP_address(char* addr);
char* get_hostname_from_addr(char* addr, char* host, unsigned host_length);
char* get_first_addr_from_hostname(char* domain_name);