#include <string.h>
#include <stdio.h>
#include <netdb.h>
#include <errno.h>
#include <unistd.h>

int main (void)
{
	// string pointing to an HTTP server (DNS name or IP)
	char str [] = "ozark.hendrix.edu";
	//char str [] = "150.208.12.199";

	// structures used in DNS lookups
	struct addrinfo *host_info, hints;

	// set address family (IPv4), socket type, and protocol
	memset(&hints, 0, sizeof(struct addrinfo));
	hints.ai_family = AF_INET;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_flags = 0;
	hints.ai_protocol = IPPROTO_TCP;

	// Do DNS lookup of str, setting the port to 80 and using the hints for other parameters
	int ret = getaddrinfo(str, "80", &hints, &host_info);
	if( ret != 0 ){
	  printf("getaddrinfo: %s\n", gai_strerror(ret));
	  return -1;
	}

	// Open TCP socket
	int sock = socket(host_info->ai_family, host_info->ai_socktype, host_info->ai_protocol);
	if (sock == -1){
	  printf("socket() error:%s\n", strerror(errno));
	  return -1;
	}
	  
	// Connect to server on port 80
	ret = connect(sock, host_info->ai_addr, host_info->ai_addrlen);
	if( ret == -1 ){
	  printf("connect() error:%s\n", strerror(errno));
	  return -1;
	}
	printf ("Successfully connected to server\n");

	// Free dynamically allocated memory that is no longer needed
	freeaddrinfo(host_info);

	// send HTTP requests here

	// close the socket to this server; open again for the next one
	close (sock);
}