From:             WPinegar at healthtech dot net
Operating system: Windows Server 2003
PHP version:      5.0.1
PHP Bug Type:     Reproducible crash
Bug description:  Using readfile() to send large files causes PHP to hang

Description:
------------
Attempting to use readfile() to send large (over 250MB) binary objects
causes PHP 5.0.1 to hang or the web server to send a 302 error.  Reverting
back to PHP 4.3.8 resolves the issue.

Using fopen() and fpassthru() only makes the issue worse.

We are using IIS 6 and the PHP ISAPI script engine.

Reproduce code:
---------------
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header("Content-Disposition: attachment;
filename=".basename($filename).";");
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".filesize($filename));

readfile("$filename"); 
exit(); 


Expected result:
----------------
PHP 5 has an issue with sending large binary files.  This should be
resolved.


-- 
Edit bug report at http://bugs.php.net/?id=29801&edit=1
-- 
Try a CVS snapshot (php4):   http://bugs.php.net/fix.php?id=29801&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=29801&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=29801&r=trysnapshot51
Fixed in CVS:                http://bugs.php.net/fix.php?id=29801&r=fixedcvs
Fixed in release:            http://bugs.php.net/fix.php?id=29801&r=alreadyfixed
Need backtrace:              http://bugs.php.net/fix.php?id=29801&r=needtrace
Need Reproduce Script:       http://bugs.php.net/fix.php?id=29801&r=needscript
Try newer version:           http://bugs.php.net/fix.php?id=29801&r=oldversion
Not developer issue:         http://bugs.php.net/fix.php?id=29801&r=support
Expected behavior:           http://bugs.php.net/fix.php?id=29801&r=notwrong
Not enough info:             http://bugs.php.net/fix.php?id=29801&r=notenoughinfo
Submitted twice:             http://bugs.php.net/fix.php?id=29801&r=submittedtwice
register_globals:            http://bugs.php.net/fix.php?id=29801&r=globals
PHP 3 support discontinued:  http://bugs.php.net/fix.php?id=29801&r=php3
Daylight Savings:            http://bugs.php.net/fix.php?id=29801&r=dst
IIS Stability:               http://bugs.php.net/fix.php?id=29801&r=isapi
Install GNU Sed:             http://bugs.php.net/fix.php?id=29801&r=gnused
Floating point limitations:  http://bugs.php.net/fix.php?id=29801&r=float

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