#define _WINSOCK_DEPRECATED_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <string.h>
#include <winsock2.h>

int main(int argc, char* argv[])
{
	// Ellenőrzés
	if (argc < 5)
	{
		printf("Hasznalat: %s IP port oldal fajl\n", argv[0]);
		return 1;
	}

	// Winsock inicializálás
	WSADATA wsd;
	if (WSAStartup(0x0202, &wsd) != 0)
	{
		printf("WSAStartup: %d", WSAGetLastError());
		return 1;
	}


	SOCKET s;
	if ((s = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
		std::cout << "creating socket:" << WSAGetLastError();
		return 1;
	}

	struct sockaddr_in addr;
	addr.sin_family = AF_INET;						//ip4
	addr.sin_addr.s_addr = inet_addr(argv[1]);		// ip cimet kap eloszor
	addr.sin_port = htons(atoi(argv[2]));			//portszamot kap masodszor

	if (connect(s, (struct sockaddr*) & addr, sizeof(addr)) < 0) {
		std::cout <<"connect:"<< WSAGetLastError();
		return 1;
	}

	//3-as feladat

	char request[256];
	int rlen = sprintf(request, "GET %s HTTP/1.0\r\n\r\n", argv[3]);

	send(s, request, rlen, 0);

	char recved[1024];
	int recvlen = recv(s, recved, sizeof(recved)-1, MSG_WAITALL );
	if (recved < 0)
	{
		std::cout << "recived:" << WSAGetLastError();
		return 1;
	}

	recved[recvlen] = 0;

	std::cout << recved;

	char version[16];
	int status;
	char error[256];

	if (sscanf(recved, "HTTP/%16s %d %256[^\r\n\r\n]", version, &status, error) == 3){
		std::cout <<"\n\n" << status << "\t" << error;
	}


	char* pdata;
	if ((pdata = strstr(recved, "\r\n\r\n")) == NULL) {
		std::cout << "EOF hiba";
	}

	FILE *fp;

	if ((fp = fopen(argv[4], "w")) != NULL)
	{
		fwrite(pdata + 4, 1,recvlen - (pdata - recved) - 4, fp);
	}
	else {
		std::cout << "fopen error";
	}

	while (recvlen = recv(s, recved, sizeof(recved), 0) > 0) {
		fwrite(recved, 1, recvlen, fp);
	}


	fclose(fp);

	closesocket(s);

	WSACleanup();
}