/*
To compile on Bloodshed Dev-Cpp:
#include <Winsock2.h> and give the option -lWSock32 to the linker.
Project -> Project Options -> Parameters -> Linker -lwsock32

Microsoft Windows examples of sockets:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms738545%28v=vs.85%29.aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/ms737625%28v=vs.85%29.aspx
*/

#include <iostream>
#include <cstdlib>
#include <string>	//for class string
#include <string.h>	//for strcpy
#include <strings.h>

#include <Winsock2.h>
#define INET6_ADDRSTRLEN 46
using namespace std;

extern int h_errno;

int main(int argc, char **argv)
{
	WSADATA wsaData;
	if (const int i = WSAStartup(MAKEWORD(2, 2), &wsaData)) {
		cerr << argv[0] << ": WSAStartup failed with error: " << i << "\n";
		system("PAUSE");
		return 1;
	}

	//IP address 74.125.226.148
	const string hostname = "www.google.com";

	//HTTP GET command to send to the above host
	const string get = "GET /finance/option_chain?q=NYSEARCA:SPY\n";

	const struct hostent *const p = gethostbyname(hostname.c_str());
	if (p == 0) {
		cerr << argv[0] << ": gethostbyname error number " << h_errno
			<< "\n";
			system("PAUSE");
		return 2;
	}

	struct sockaddr_in address;
	ZeroMemory(&address, sizeof address);
	memcpy(&address.sin_addr, p->h_addr_list[0], p->h_length);
	address.sin_family = AF_INET;
	address.sin_port = htons(80);

	const int s = socket(AF_INET, SOCK_STREAM, 0);
	if (s < 0) {
		perror(argv[0]);
		system("PAUSE");
		return 3;
	}

	char buffer[INET6_ADDRSTRLEN];
	strcpy(buffer, inet_ntoa(address.sin_addr));
	cout << "Trying " << buffer << "...\n";

	if (connect(s, reinterpret_cast<struct sockaddr *>(&address),
		sizeof address) != 0) {
		perror(argv[0]);
		system("PAUSE");
		return 4;
	}

	cout << "Connected to " << hostname << ".\n";

	if (send(s, get.c_str(), get.size(), 0) == SOCKET_ERROR) {
		cerr << argv[0] << ": " << WSAGetLastError() << "\n";
		system("PAUSE");
		return 5;
	}

	char c;
	while (recv(s, &c, 1, 0) > 0) {
		cout << c;
	}

	if (closesocket(s) == SOCKET_ERROR) {
		perror(argv[0]);
		system("PAUSE");
		return 6;
	}

	WSACleanup();
	system("PAUSE");
	return EXIT_SUCCESS;
}