一个选择是试图获得来自该URL的数据，方法是使用 URLOpenBlockingStream函数

One option is to try to get data from that URL by using the URLOpenBlockingStream function.

示例：

IStream* pStream = NULL;
if (SUCCEEDED(URLOpenBlockingStream(0, "URL string", &pStream, 0, 0))) {
    // Release the stream immediately since we don't use the data.
    pStream->Release();
    return TRUE;
}
else {
    return FALSE;
}