[Resolved] IE connection problem after file download

coffeeguy

The equipment:
Windows 2000 server and phpdev 4.2.3 (php, apache, mysql)

I have a simple page, where the user can download some documents (pdf, doc). It seems to work fine with
browsers except Internet Explorer (I have tested with Netscape, Mozilla and Opera). The site uses sessions without using cookies.
The problem is as follows (the code is in the end of message):

Case 1, works fine:

Open the link page (contains "download forms")
Click "Load" and save or open the document
Click "Load" and save or open (the same or some other document)
WITHIN ABOUT 15 SECONDS from the previous download

Case 2, DOES NOT WORK (gives "The page cannot be displayed")

Open the link page
Click "Load" and save or open the document
Click "Load" and save or open (the same or some other document)
WHEN OVER 15 SECONDS HAVE ELAPSED FROM THE PREVIOUS DOWNLOAD

Case 3, works fine:

same as "case 2", but there is a AUTOREFRESH (ten seconds) in the Linkpage.htm

Case 4, works fine:

Open the link page
Wait a minute or two
Click "Load" and save or open the document

Seems like something weird happens after the file open/download, and I can't figure out what it could be. I think
this could have something to do with the Apache and the "KeepAlive", because in the httpd.conf file the
"KeepAliveTimeout" is set to "15".

Any clue about what the problem is, and how can I manage to get this workin without the autorefresh????

Here is the essential part of the code:

First page: (Linkpage.htm)

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Title</title>
</head>
<body>

etc.....

Second page: "Loaddocument.php"

<?php

include_once("config.php"); //This contains also the function "DownloadFile($filename)"

$document = $HTTP_POST_VARS["document"];
$filename = "c:\dir\dsubdir\" . "$document";
DownloadFile($filename);

?>

The actual download function:

function DownloadFile($filename)
{
if (empty($filename) || !file_exists($filename))
{
return FALSE;
}

  $saveasname = basename($filename); 

  header('Content-Type: application/octet-stream'); 
  header('Content-Length: '.filesize($filename)); 

  if (preg_match('/MSIE 5.5/', $_ENV['HTTP_USER_AGENT']) 
   || preg_match('/MSIE 6.0/', $_ENV['HTTP_USER_AGENT'])) 
  { 
     header('Content-Disposition: filename="'.$saveasname.'"'); 
  } 
  else 
  { 
    header('Content-Disposition: attachment; filename="'.$saveasname.'"'); 
  } 

   header('Content-Transfer-Encoding: binary'); 
   header("Cache-Control: must-revalidate, post-check=0, pre-check=0");  	
   header("Pragma: public");  						

   readfile($filename); 
   return TRUE;

}

peppeto

I did not read all of your listing try first with this on your form page

enctype="multipart/form-data" is importent if you send documents or images
If this does not work then we will try with rest later because I need to eat something
regards peppe

coffeeguy

Thanks for the hint, Peppeto. Unfortunately it didn't solve the problem...

peppeto

Can you atach your code please so I can check it

coffeeguy

Originally posted by peppeto
Can you atach your code please so I can check it

Maybe later, I should first take all the "non public" content away =D.

I just noticed that the problem exists only with large files but not with small text files (didn't work with 35 kB or 600 kB pdf, but worked with 1kB text file).

coffeeguy

Problem solved! (At least it works in my system...)

I changed this:

readfile($filename);

..to this:

while(!feof($filename)) {
$buffer = fread($filename, 2048);
print $buffer;
}