How to do a https request in win32

httpsclientrequest.cpp

#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#include <wininet.h>
#include <stdio.h>

int main()
{
    static HINTERNET hInternet;
    hInternet = InternetOpenA("wininet-test", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);

    const char* from = "https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html";

    int retval = 0;
    DWORD httpcode = 0;
    DWORD dwordlen = sizeof (DWORD);
    DWORD zero = 0;
    HINTERNET hUrl = InternetOpenUrlA(hInternet, from, NULL, 0,
                                INTERNET_FLAG_HYPERLINK |
                                INTERNET_FLAG_IGNORE_REDIRECT_TO_HTTP |
                                INTERNET_FLAG_IGNORE_REDIRECT_TO_HTTPS |
                                INTERNET_FLAG_NO_CACHE_WRITE |
                                INTERNET_FLAG_NO_COOKIES |
                                INTERNET_FLAG_NO_UI |
                                INTERNET_FLAG_RESYNCHRONIZE |
                                INTERNET_FLAG_RELOAD |
                                INTERNET_FLAG_SECURE, 0);

    if (!hUrl) {
        printf("InternetOpenUrl failed. err=%d", (int) GetLastError());
    } else if (!HttpQueryInfo(hUrl, HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &httpcode, &dwordlen, &zero)) {
        printf("HttpQueryInfo failed. err=%d", (int) GetLastError());
    } else if (httpcode != 200) {
        printf("HTTP request failed with response code %d", (int) httpcode);
    } else {
        std::stringstream ss;
        while (1) {
            DWORD br = 0;
            BYTE buf[1024 * 64];
            if (!InternetReadFile(hUrl, buf, sizeof (buf), &br)) {
                printf("InternetReadFile failed. err=%d", (int) GetLastError());
                break;
            } else if (br == 0) {
                retval = 1;
                break;  /* done! */
            } else {
                ss.write((char*)buf,br);
            }
        }
        
        std::cout << ss.str()<<std::endl;
    }

    InternetCloseHandle(hUrl);

    return 0;
}