void test_range_request_download()
{
	string url = "https://www.originlab.com/ftp/forum_and_kbase/Images/11_channel_copy_paste_2502061552.txt";

	HttpRangeRequestParameters parameters;	
	parameters.nMinimumRangeSize = 1024 * 1024;    // default: 1 MB
	parameters.nMaximumParallelDownloads = 16;

	DWORD dw1 = GetTickCount();
	string path;
	StringArray saResponseHeaders, saLogs;
	bool bRet = okutil_http_range_request(&path, url, &parameters, &saResponseHeaders, &saLogs);
	DWORD dw2 = GetTickCount();
	printf("%d ms\n", dw2 - dw1);
	return;
}