Yes and no. Your server simply stops responding and the GET request does not even "get through". That's why you do not see the "404" in your LOG. So there is absolutely nothing the HTTP component (WinSock) can do because your server stops communicating. Do you see what I mean? Your server does not log or send the "404" (I agree with you on this). But how to continue with the download if your server does not response to the GET request?
Friedrich