Verifying Downloads

[Anon]

Is there a way to verify that a download has taken place?

On the site I'm working on, users have a limited number of files they can download. The download and database files (for tracking) work properly.

However, if a user selects a file for download, and then selects "cancel" from the browser/OS supplied file-save pop-up box, they lose the file credit.

Is there a method or way of checking the status of the file download to see if it's actually downloaded or not?

-Mark

[Anon]

Do you decrement credit before or after having output file to the user (with readfile for instance) ? If the user cancels, I suppose PHP script stops right after readfile. So, if you decrement after, it's Ok. Well, to be tested...

About this issue, you could check for chapter 21: Connection handling (ignore_user_abort(),connection_aborted(),...)

[Anon]

I decrement after, but the script doesn't know if the user actually downloaded it, or pressed the "cancel" button. Even right-clicking on the "download" button results in a decrement. The problem lies in PHP handing-off the download to a dialogue box. The trick would be to find out what the user is doing with the dialogue box.

Is there a way of doing this?

-Mark

[Anon]

I've done some tests, seems it's not possible... Sorry, I don't have any more ideas.