ID: 24756
User updated by: nalldrin at cs dot ucsd dot edu
Reported By: nalldrin at cs dot ucsd dot edu
-Status: Feedback
+Status: Open
Bug Type: Sockets related
Operating System: Windows XP Pro
PHP Version: 4.3.3RC2-dev
New Comment:
Yes, that's what I mean.
I wrote a more simple test case that tries to open port 9999 on
www.php.net. On linux the test returns immediately, as it should. But
on win32, it spins until timeout.
..............................
<?php
// fsockopen spins on win32 on opening non-existant ports when it
should fail
immediately.
$startTime = time();
fsockopen("www.php.net", 9999, $errno, $error_str, 10);
$totalTime = time() - $startTime;
if($totalTime >= 10) {
print("Spun until timeout trying to open a closed port. Huh?");
}
?>
..............................
Output:
..............................
Content-type: text/html
X-Powered-By: PHP/4.3.2
<br />
<b>Warning</b>: fsockopen(): php_hostconnect: connect failed in
<b>C:\cygwin\home\Neil Alldrin\test.php</b> on line <b>7</b><br />
<br />
<b>Warning</b>: fsockopen(): unable to connect to www.php.net:9999 in
<b>C:\cygwin\home\Neil Alldrin\test.php</b> on line <b>7</b><br />
Spun until timeout trying to open a closed port. Huh?
Previous Comments:
------------------------------------------------------------------------
[2003-07-23 01:10:06] [EMAIL PROTECTED]
*sigh* yes, fsockopen() creates a tcp connection.
the http:// wrapper uses those tcp connections to talk http.
So... you just mean a port that is not filtered but has no processes
listening on it?
--Wez.
------------------------------------------------------------------------
[2003-07-23 01:06:44] nalldrin at cs dot ucsd dot edu
The problem isn't with fopen(); it's with fsockopen() which should be
trying to create a raw tcp:// connection, not an http:// connection.
The point of comparing fsockopen with fopen was to show that somehow
fopen can tell that the port is closed while fsockopen cannot (since
they both need a tcp:// connection).
What I mean by "closed but not blocked" is a port that won't accept a
tcp connection, but still sends out a reply to the connection attempt
saying it's closed. A blocked port would pretend it didn't see the
connection attempt at all. I'm probably muddling my terminology, but
that's what I mean :).
------------------------------------------------------------------------
[2003-07-23 00:54:48] [EMAIL PROTECTED]
The http:// wrapper internally calls the same connection routines as
fsockopen, so I can't see how it could be behaving differently (error
messages aside).
Can you explain what you mean by a closed-but-not-blocked port?
------------------------------------------------------------------------
[2003-07-22 15:36:52] nalldrin at cs dot ucsd dot edu
Description:
------------
I'm running PHP 4.3.2 on Windows XP and think I've found a bug in
fsockopen(). When attempting to open a closed, non-blocked port,
fsockopen() times out instead of returning immediately. On linux,
fsockopen() returns immediately instead of timing out. I've tried the
latest CVS version (php4-win32-STABLE-200307211230) and get the same
problem. Also perhaps relevant is the fact that fopen() seems to work
correctly (ie, it does not time out like fsockopen).
Note: I think this is the same problem as bugs 23131, 21193, etc., but
the problem does not seem to be fixed.
Here's some more info about the machine/php version I'm running:
System:
Microsoft Windows XP Professional Version 2002 Service Pack 1
Xeon 3.06GHz
512MB RAM
PHP:
<a
href="http://louis.ucsd.edu/~nalldrin/phpbug/phpinfo.html>phpinfo</a>
Reproduce code:
---------------
<?php
set_time_limit(0);
$hostname = 'localhost'; //use any hostname:port combo that is closed,
but not blocked
$port = 81;
$errno = null;
$error_str = null;
// FSOCKOPEN does not detect closed port and waits until timeout
echo microtime() . "\n";
$fp = fsockopen( $hostname, $port, $errno, $error_str, 10);
echo microtime();
echo "\nerrno: "; var_dump($errno);
echo "error_str: "; var_dump($error_str);
echo "retval: "; var_dump($fp);
if ($fp !== false) fclose($fp);
// FOPEN seems to correctly detect closed port and returns immediately
echo microtime() . "\n";
$fp2 = fopen ("http://$hostname:$port";, "r");
echo microtime();
if ($fp2 !== false) fclose($fp2);
?>
Expected result:
----------------
The script should return immediately, saying the hostname/port is
closed or something to that effect.
Actual result:
--------------
The fsockopen() call times out.
..........................................
0.98491200 1058903395
<br />
<b>Warning</b>: fsockopen(): php_hostconnect: connect failed in
<b>c:\Inetpub\wwwroot\phpbug\fsockopenbug.php</b> on line <b>11</b><br
/>
<br />
<b>Warning</b>: fsockopen(): unable to connect to localhost:81 in
<b>c:\Inetpub\wwwroot\phpbug\fsockopenbug.php</b> on line <b>11</b><br
/>
0.98788000 1058903405
errno: int(10060)
error_str: string(185) "A connection attempt failed because the
connected party did not properly respond after a period of time, or
established connection failed because connected host has failed to
respond."
retval: bool(false)
0.98791200 1058903405
<br />
<b>Warning</b>: fopen(): php_hostconnect: connect failed in
<b>c:\Inetpub\wwwroot\phpbug\fsockopenbug.php</b> on line <b>22</b><br
/>
<br />
<b>Warning</b>: fopen(http://localhost:81): failed to open stream: Bad
file descriptor in <b>c:\Inetpub\wwwroot\phpbug\fsockopenbug.php</b> on
line <b>22</b><br />
0.94688200 1058903406
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=24756&edit=1
