High-level HTTP client library for native C/C++ in Win32

Question

Are there no "high-level" HTTP libraries for native C/C++ in Win32 or am I just looking in the wrong places?

By "high-level" I mean an API that lets me do HTTP web requests/responses in C++ with "about the same" abstraction level as the .NET framework (but note that using C++/CLI is not an option for me).

How to do something like this (with about the same amount of code) in C/C++ in Win32 without using .NET? As a reference, I include a code sample to show how I'd do it in C#.

byte[] fileBytes = null;
bool successfulDownload = false;
using (WebClient client = new WebClient())
{
    WebProxy proxy = WebProxy.GetDefaultProxy();
    client.Proxy = proxy;
tryAgain:
    try
    {
        fileBytes = client.DownloadData(fileUrl);
        successfulDownload = true;
    }
    catch (WebException wEx)
    {
        if (wEx.Response != null && wEx.Response is HttpWebResponse)
        {
            string username = null, password = null;
            bool userCanceled = false;
            HttpStatusCode statusCode = ((HttpWebResponse)wEx.Response).StatusCode;
            switch (statusCode)
            {
                case HttpStatusCode.ProxyAuthenticationRequired:
                    // This is just a convenience function defined elsewhere
                    GetAuthenticationCredentials(fileUrl, true,
                        out username, out password, out userCanceled);
                    if (!userCanceled)
                    {
                        client.Proxy.Credentials = new NetworkCredential(username, password);
                        goto tryAgain;
                    }
                    break;
                case HttpStatusCode.Unauthorized:
                    // This is just a convenience function defined elsewhere
                    GetAuthenticationCredentials(fileUrl, false,
                        out username, out password, out userCanceled);
                    if (!userCanceled)
                    {
                        client.Credentials = new NetworkCredential(username, password);
                        goto tryAgain;
                    }
                    break;
            }
        }
    }
}

Answer 1

Win32 provides the Internet* functions.

http://msdn.microsoft.com/en-us/library/aa385473(VS.85).aspx

You'll need to do an (IIRC, I haven't touched these APIs in over 10 years) InternetOpenURL and InternetReadFile.