On WP8.1 ONLY: cannot read more than 65536 bytes off an HTTP Stream

Hi,

Hope someone could please provide any help on an issue I'm struggling for
quite a lot of time.

Goal: I need to read an http stream from a specified URI,
that I startup & endlessly read with the following code (which I stripped
down to minimum so to really focus on the bare communication problem):

public void StartupStream(Uri uri)
{
	HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);

	// Start the asynchronous request
	request.BeginGetResponse(OnGetResponse, request);
}
private void OnGetResponse(IAsyncResult asyncResult)
{
	// get the response
	HttpWebRequest req = (HttpWebRequest)asyncResult.AsyncState;
	try
	{
		using (HttpWebResponse resp = (HttpWebResponse)req.EndGetResponse(asyncResult))
		{
			using (Stream s = resp.GetResponseStream())
			{
				// dummy-read the stream forever
				int readBytes = 0;
				byte[] buffer = new byte[4096];
				while (true)
				{
					readBytes += s.Read(buffer, 0, buffer.Length);
				}
			}
		}
	}
	catch (Exception ex)
	{
		throw;
	}
	finally
	{
		req.Abort();
	}
}