http - is it possible to continue a file upload after a browser has been quit? -

If a user starts uploading the file (in the web app), and before the upload completes their browser What happens if you turn it off?

My guess is that the upload will be skipped, and there is some garbage cleaning mechanism in the server that finally kicks but I'm not sure. Is there any difference between server or server languages? Any differences in leaving the browser and just closing a window?

This is a streaming so my guess is right. There is no difference in closing a window because they are threads, right?