#43782 [Tbd->Opn]: feof() does not detect timeout on socket

From: Date: Tue, 25 Nov 2008 07:32:25 +0000
Subject: #43782 [Tbd->Opn]: feof() does not detect timeout on socket
References: 1  Groups: php.doc.bugs 
Request: Send a blank email to doc-bugs+get-1538@lists.php.net to get a copy of this message 
 ID:               43782
 Updated by:       jani@php.net
 Reported By:      ml at foofree dot sk
-Status:           To be documented
+Status:           Open
-Bug Type:         Streams related
+Bug Type:         Documentation problem
 Operating System: *
 PHP Version:      5.2,5.3CVS (2008-07-15)


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

[2008-11-24 15:38:52] dsp@php.net

The patch was reverted as it caused problems. We might want to edit the
documentation instead.

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

[2008-08-26 16:06:45] dsp@php.net

This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.



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

[2008-01-08 01:19:23] ml at foofree dot sk

Description:
------------
From docs:

"Returns TRUE if the file pointer is at EOF or an error occurs
(including socket timeout); otherwise returns FALSE."

...

"If a connection opened by fsockopen() wasn't closed by the server,
feof() will wait until a timeout has been reached to return TRUE. The
default timeout value is 60 seconds. You may use stream_set_timeout() to
change this value."



feof() dows not wait and returns TRUE instead of FALSE if timeout
reached (server does not closed connection and there is no data in
timeout time slot).

* server does not closed connection,
* timeout wa reached

Reproduce code:
---------------
$s = stream_socket_client('tcp://www.php.net:80', $errno, $errstr, 10,
STREAM_CLIENT_CONNECT);

stream_set_timeout($s, 4);

$response = '';
while (feof($s) !== TRUE) {

   if (($foo = @fread($s, 1024 * 8)) === FALSE) return NULL;
   $response = $response . $foo;
};

print "OK";

Expected result:
----------------
prints "OK" approx. in 4 seconds

Actual result:
--------------
hangs forever


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


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