ID: 14740
Updated by: jason@php.net
-Summary: fsockopen() won't timeout
Reported By: l0cky@sn0wmen.fsnet.co.uk
-Status: Open
+Status: Analyzed
Bug Type: Sockets related
Operating System: Win98 and Win2k
PHP Version: 4.1.0
New Comment:
The Win32 code does not set a timeout. The comment at the end refers to
there being a problm on linux, which I could not reproduce.
Winsock does support non-blocking IO, but is set up quite differently
than BSD sockets.
-Jason
Previous Comments:
------------------------------------------------------------------------
[2002-02-11 15:40:27] salvag3@netscape.net
The timeout doesn't work if the host don't respond on the
requested port :-(
os: linux redhat 7.2
php 4.0.6-7
apache 1.3.20-16
------------------------------------------------------------------------
[2002-01-28 12:19:57] korpse@p16.pub.ro
well, me too!
os: win xp professional
apache 1.3.22
php 4.1.1 (win32)
the code:
$fp = fsockopen($hname,139, &$errno, &$errstr,3);
if(!$fp) echo "$hname is not responding on port 139 ";
else {
echo "$hname is alive";
fclose($fp);
}
the problem:
the 3 secs timeout does not work
------------------------------------------------------------------------
[2001-12-29 09:20:52] l0cky@sn0wmen.fsnet.co.uk
ok to clarify.. seems like this is a common mistake
fsockopen() times out ok if the server doesn't exist. The problem
occurs when the server doesn't understand what is sent to it afterwards
and stalls for a reply (ie, if the port is now used by another
service).
I'll check the bugs for fwrite(), fgets() etc
------------------------------------------------------------------------
[2001-12-28 12:33:49] l0cky@sn0wmen.fsnet.co.uk
A simple query to a server with fsockopen() won't timeout if the
requested server is
down.
$serverquery = fsockopen($host, $port, &$errno, &$errstr, $timeout);
The operation times out first (120 seconds), even if $timeout is as low
as 1 second; it
works fine if I remove unavailable servers from the query list.
Sometimes the server
crashes if I try the function again before the last operation times
out.
------------------------------------------------------------------------
[2001-12-28 12:31:36] l0cky@sn0wmen.fsnet.co.uk
A simple query to a server with fsockopen() won't timeout if the
requested server is down.
$serverquery = fsockopen($host, $port, &$errno, &$errstr, $timeout);
The operation times out first (120 seconds), even if $timeout is as low
as 1 second; it works fine if I remove unavailable servers from the
query list. Sometimes the server crashes if I try the function again
before the last operation times out.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=14740&edit=1