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