ID:               22526
 Updated by:       [EMAIL PROTECTED]
 Reported By:      iberry at raxnet dot net
-Status:           Open
+Status:           Feedback
 Bug Type:         Session related
 Operating System: Windows 2000
 PHP Version:      4.3.0
 New Comment:

Are you sure this isn't same as what we've verified in bug #22154 ?

Do you have session.use_trans_sid = 1 in your php.ini?



Previous Comments:
------------------------------------------------------------------------

[2003-03-06 00:30:24] iberry at raxnet dot net

I tried Apache 1.3.27 with PHP's php4apache.dll and got the same
negative results. The code I originally posted still causes the hang
with this configuration.

-Ian

------------------------------------------------------------------------

[2003-03-05 13:49:23] [EMAIL PROTECTED]

Both of the SAPI's you've tried (IIS & Apache 2) are thread based, it
is possible that this problem is specific to multi-threaded
application, and that's why single-threaded SAPIs like CLI/CGI are not
affected by it.
Could you try and see if the problem can be replicated using Apache
1.X?

------------------------------------------------------------------------

[2003-03-04 15:46:19] iberry at raxnet dot net

I tried the latest CVS version with the same negative results. I then
tried to duplicate the bug using the CGI/CLI binary with no luck (could
not produce the sufficent code). After this however, I switched Apache
from SAPI to CGI and the problem went away.

So for now, we can assume that the problem is related to PHP's SAPI
support.

Were you able to reproduce this under a SAPI environment?

-Ian

------------------------------------------------------------------------

[2003-03-04 10:29:31] [EMAIL PROTECTED]

Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip

If the problem persists, see if the bug can be replicated using the CLI
or CGI sapi.

------------------------------------------------------------------------

[2003-03-03 17:55:33] iberry at raxnet dot net

I think I have found some sort of race-like condition using
session_start() and popen() functions, causing the web server to hang.
The bug only seems to manifest when repeatedly initiating a page that
requires session_start() and uses popen(). This is relevant for me
because this page renders graphs and needs both of these functions to
perform its job. Here is some example code to re-produce the problem:

----test.php----
<img src="img.php?rra_id=1">
<img src="img.php?rra_id=2">
<img src="img.php?rra_id=3">
<img src="img.php?rra_id=4">
----end----

----img.php----
<?php
session_start();

$fp = popen('test', "r");
print fpassthru($fp);
pclose($fp);
?>
----end----

Notice how I am passing different GET variables to each image page
session, this seems to be necessary for the bug to manifest. This code
has been tested on both IIS 5 and Apache 2.0.44 with the same results

The path I give popen() does not appear to make a difference. I have
also have tried the popen 'r' and 'rb' file modes, which made no
difference. The two triggers of this bug appear to be the combined use
of session_start()/popen() and the varying GET variable values.

Thanks for taking time to look into this.

-Ian

------------------------------------------------------------------------


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