Download counter not counting

[s(in|mf)]

SMF Version: SMF 1.1.1
_{Forgive me if this question has been asked before - I did multiple searches, but did not find a solution to this specific problem.}

The short
I want the download counter for attachment downloads to increase each and every time a file is downloaded, no matter if it is downloaded by the same user or within the same session.

The long

Problem
If I download an attachment for the first time, I see the download counter increasing in the topic and in the database (table {prefix}attachments, attribute 'downloads') as it is supposed to. However, if I download the same file again the counter does not increase.

What I have tried
If I go to the top-level index.php file, I see a variable called $actionArray which contains this line:
'dlattach' => array('Display.php'), 'Download')

This means that in the file Display.php in the Sources directory, the function Download will be executed each time someone clicks to download a file.
On line 973 of Display.php (I made some modifications so it could be in a slightly different location) I see the following code:

// Update the download counter (unless it's a thumbnail).
   if ($attachmentType != 3)
      db_query("
         UPDATE LOW_PRIORITY {$db_prefix}attachments
         SET downloads = downloads + 1
         WHERE ID_ATTACH = $ID_ATTACH
         LIMIT 1", __FILE__, __LINE__);

Now this query should update the download counter each and every time someone downloads a file, but it doesn't.

Bug or feature?
I understand that this is might be a feature (it probably is...), so that if a same user downloads an attachment twice or multiple times, the counter doesn't keep increasing. However I Do want it to increase.


Problem is, I don't know where to look to disable this feature. Can anyone help me out with this? Thanks.

[s(in|mf)]

Is there really nobody who can at least give his/her thoughts on this?

[SleePy]

s(in|mf),

Where you able to resolve this?
I believe the attachments system tracks which file you downloaded so it doesn't add to it.

You could most likely change this somewhere in the Sources (which I can't remember at the moment) so it doesn't do this.

[gafai]

I found its about cache.... 

In Display.php change:

// If this has an "image extension" - but isn't actually an image - then ensure it isn't cached cause of silly IE.
   if (!isset($_REQUEST['image']) && in_array(substr($real_filename, -4), array('.gif', '.jpg', '.bmp', '.png', 'jpeg', 'tiff')))
      header('Cache-Control: no-cache');
      else
   header('Cache-Control: max-age=' . (525600 * 60) . ', private');

to this

// If this has an "image extension" - but isn't actually an image - then ensure it isn't cached cause of silly IE.
   if (!isset($_REQUEST['image']) && in_array(substr($real_filename, -4), array('.gif', '.jpg', '.bmp', '.png', 'jpeg', 'tiff')))
      header('Cache-Control: no-cache');
      else
header('Cache-Control: no-cache');
   //header('Cache-Control: max-age=' . (525600 * 60) . ', private');

[Aleksi "Lex" Kilpinen]

Please avoid bumping topics that are years old and are not activily discussed in anymore, unless there is a real strong reason for you to do so. As this topic is more than 4 years old, I'll mark this solved.