ID: 40556
Updated by: [EMAIL PROTECTED]
Reported By: unreal at slashorg dot net
-Status: Assigned
+Status: Feedback
Bug Type: CGI related
Operating System: Linux 2.6.18
PHP Version: 5.2.1
Assigned To: dmitry
New Comment:
I am still not able to reproduce the problem.
Could you please attach debugger to stuck php process and show its
backtrace.
Previous Comments:
------------------------------------------------------------------------
[2007-02-22 12:01:19] unreal at slashorg dot net
OK, I've done quite a lot more testing, and here are the results
(Apache 2.0.59/mod_fastcgi 2.4.2/PHP 5.2.1):
- I cannot reproduce the bug with your code either.
- The following code causes PHP workers to lock up if you abort during
download (and only if you abort):
http://www.slashorg.net/ex/crash.txt
Note: notice the "session_start();" line
- If I remove the "session_start();" line, PHP doesn't crash anymore,
even when I abort the download.
It seems this bug is more complicated than I thought, I hope you'll be
able to reproduce it.
Thanks for your help.
------------------------------------------------------------------------
[2007-02-21 15:18:30] [EMAIL PROTECTED]
I am not able to reproduce the problem.
I tried to abort downloading from IE and download part of file running
the following PHP script from command line:
<?php
$f = fopen("http://127.0.0.1/test/bug40556.php";, "r");
$s = fread($f, 1024*1024);
var_dump($s);
fclose($f);
?>
both cases work fine (Apache-1.3.28 with mod_fastcgi or ZendEnabler on
Linux 2.6.19)
------------------------------------------------------------------------
[2007-02-20 12:48:13] unreal at slashorg dot net
I've just upgraded to 5.2.2-dev as you suggested, and that hasn't fixed
the problem.
My server is still dying as soon as a connection gets aborted.
------------------------------------------------------------------------
[2007-02-20 12:14:53] [EMAIL PROTECTED]
Please try using this CVS snapshot:
http://snaps.php.net/php5.2-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5.2-win32-latest.zip
------------------------------------------------------------------------
[2007-02-20 12:10:10] unreal at slashorg dot net
Description:
------------
PHP doesn't handle browser abort correctly.
- Use PHP to serve a file, using the code below
- Start downloading the file, and then abort.
Reproduce code:
---------------
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: public');
header('Content-Type: application/force-download');
header('Content-Type: application/octet-stream');
header('Content-Type: application/download');
header('Content-Disposition: attachment; filename="' . basename($path)
. '";');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($path));
$handle = fopen($path, 'rb');
do {
$data = fread($handle, 8192);
if (strlen($data) == 0) {
break;
}
echo($data);
} while (true);
fclose($handle);
Expected result:
----------------
After browser abord, the server should remain responsive.
Actual result:
--------------
* Lots of errors in error_log:
'FastCGI: comm with server "/usr/local/www/cgi/php-cgi/php5.fcgi"
aborted: idle timeout (30 sec)'
'FastCGI: incomplete headers (0 bytes) received from server
"/usr/local/www/cgi/php-cgi/php5.fcgi"'
* Server stops responding, then after some time (maybe 5 mins), starts
responding again.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=40556&edit=1
