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Bug #48517 forcing download +2mb
Submitted: 2009-06-10 12:18 UTC Modified: 2009-06-10 12:43 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: filmixt at gmail dot com Assigned:
Status: Not a bug Package: Reproducible crash
PHP Version: 5.2.9 OS: Centos
Private report: No CVE-ID: None
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From: filmixt at gmail dot com
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 [2009-06-10 12:18 UTC] filmixt at gmail dot com
Description:
------------
Hi everyone,
This is the first time I post here, I hope you could help me with a hard one.

I'm making a project, where I have to force the download and print the content of a 700mb-1gb file. Problems? Well, a lot. Why? You'll see.. :D

If we do this:
[code=text]// FILE EXTERNAL[]
      $f = $_GET["f"];
// Size
function urlfilesize($url,$thereturn) {
 
    $x = array_change_key_case(get_headers($url, 1),CASE_LOWER);
    $x = $x['content-length'];
    return $x;
}
// Getting size
$peso = urlfilesize($_GET[f],'');
 
 
// Headers
header("Content-Type: application/download"); 
header("Transfer-Encoding: chunked");
header("Content-Disposition: attachment; filename=\"$f\"\n");
header("Content-Length: ".$peso);
readfile($f);[/code]

Once you get to 2MB, the download stops, why?, php hangs.
I've been 4 days looking for an answer or a fix, and I failed. Imagine how I am :)
This script is very easy, lets go onto a harder one... not too much:

[code=text]// ARCHIVO
      $f = $_GET["f"];
// PESO
      function urlfilesize($url,$thereturn) {
$x = array_change_key_case(get_headers($url, 1),CASE_LOWER);
$x = $x['content-length'];
return $x;
}
 
// Tengo PESO
$peso = urlfilesize($_GET[f],'');
 
// Headers
      $name = explode("/", $f);
      $nc = count($name);
     $nombre = $name[$nc-1];     
header('Content-Description: File Transfer'); 
header("Content-Type: application/octet-stream"); 
header("Content-Type: application/download"); 
header ("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Disposition: attachment; filename=\"$nombre\"\n");
header("Content-Length: ".$peso);
set_time_limit(0);
 
 
   
      function readfile_chunked($filename,$retbytes=true)
   
      {
   
         $chunksize = 1*(1024*1024); // how many bytes per chunk
   
         $buffer = '';
   
         $cnt =0;
  
         // $handle = fopen($filename, 'rb');
  
         $handle = fopen($filename, 'rb');
  
         if ($handle === false)
  
         {
  
             return false;
  
         }
  
         while (!feof($handle))
  
       {
  
             $buffer = fread($handle, $chunksize);
  
             echo $buffer;
  
             if ($retbytes)
  
             {
  
                 $cnt += strlen($buffer);
  
             }
  
         }
  
         $status = fclose($handle);
  
         if ($retbytes && $status)
  
         {
  
             return $cnt; // return num. bytes delivered like readfile() does.
 
         }
 
         return $status;
 
      }
 
readfile_chunked($f,$peso);[/code]

Buffer? The same, it hangs at 2MB.
:D Now what?

I tried:

[code=text]header("Content-Type: application/download"); 
header("Transfer-Encoding: chunked");
header("Content-Disposition: attachment; filename=\"$f\"\n");
header("Content-Length: ".$peso);
header("Location: $f");[/code]

Funny? Well.. desperate. It doesnt work, it just redirects ;-)

I tried to install lighttpd module, and it just works with LOCAL files, haha, not useful...

So, in conclusion, Im f**ked up.
I hope there's a master here to show us the way, or someone with an idea, because I can't handle more...

Thanks everyone for the time.

Expected result:
----------------
Download the file completelly.

Actual result:
--------------
It hangs at 2mb

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 [2009-06-10 12:43 UTC] jani@php.net
This place is for reporting bugs in PHP, not for asking questions how to 
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