ID: 46636
Updated by: dsp@php.net
Reported By: aragon at phat dot za dot net
-Status: Assigned
+Status: Feedback
Bug Type: Streams related
Operating System: FreeBSD 7.0-STABLE
PHP Version: 5.2.7RC4
Assigned To: dsp
New Comment:
Please try using this CVS snapshot:
http://snaps.php.net/php5.2-latest.tar.gz
For Windows:
http://windows.php.net/snapshots/
Previous Comments:
------------------------------------------------------------------------
[2008-11-22 10:39:18] johannes@php.net
David, please check when checking #46049
------------------------------------------------------------------------
[2008-11-21 13:31:18] lbarnaud@php.net
I will, but it seems related to this one:
http://bugs.php.net/bug.php?id=46049
------------------------------------------------------------------------
[2008-11-21 08:30:29] pajoye@php.net
Arnaud, can you take a look please?
http://tinyurl.com/6g42xf
------------------------------------------------------------------------
[2008-11-21 02:59:04] aragon at phat dot za dot net
Sorry, I pasted misleading reproduce code. It should be:
<?
$errno = 0; $errstr = '';
$socket = stream_socket_client('tcp://127.0.0.1:80', $errno, $errstr,
5, STREAM_CLIENT_CONNECT|STREAM_CLIENT_ASYNC_CONNECT);
if (stream_set_blocking($socket, 0) === false) die('blah');
$state = $i = 1;
$start = time();
while (1) {
$read = $write = $except = null;
switch ($state) {
case 1: $write = array($socket); break;
case 2: $read = array($socket); break;
}
echo $i.':'.(time()-$start).chr(10);
if (stream_select($read, $write, $except, 0, 500000) > 0) {
echo $i.':'.(time()-$start).chr(10);
if (feof($socket)) break;
echo $i++.':'.(time()-$start).chr(10);
switch ($state) {
case 1:
fwrite($socket, 'GET /blog HTTP/1.0' .
chr(13).chr(10).chr(13).chr(10));
$state = 2; break;
case 2:
if (fread($socket, 8192)) echo 'ooo'.chr(10); break;
}
}
}
echo (time()-$start).chr(10);
?>
------------------------------------------------------------------------
[2008-11-21 02:56:54] aragon at phat dot za dot net
Description:
------------
There was a change since 5.2.6 release that is causing feof() to block
when testing a non-blocking socket for EOF. It happens if the socket
has no data waiting in its buffer and is open.
If I compare 5.2.6 and 5.2.7 code it looks like
main/streams/streams.c:642:
if (!stream->eof && PHP_STREAM_OPTION_RETURN_ERR ==
php_stream_set_option(stream,
PHP_STREAM_OPTION_CHECK_LIVENESS,
-1, NULL)) {
stream->eof = 1;
}
In 5.2.6 php_stream_set_option is called with a value of 0, not -1.
Reproduce code:
---------------
<?
$errno = 0; $errstr = '';
$socket = stream_socket_client('tcp://127.0.0.1:80', $errno, $errstr,
5, STREAM_CLIENT_CONNECT|STREAM_CLIENT_ASYNC_CONNECT);
if (stream_set_blocking($socket, 0) === false) die('blah');
$state = $i = 1;
while (1) {
$read = $write = $except = null;
switch ($state) {
case 1: $write = array($socket); break;
case 2: $read = array($socket); break;
}
echo $i.':'.time().chr(10);
if (stream_select($read, $write, $except, 0, 500000) > 0) {
echo $i.':'.time().chr(10);
if (feof($socket)) break;
echo $i++.':'.time().chr(10);
switch ($state) {
case 1:
fwrite($socket, 'GET /blog HTTP/1.0' .
chr(13).chr(10).chr(13).chr(10));
$state = 2; break;
case 2:
if (fread($socket, 8192)) echo 'ooo'.chr(10); break;
}
}
}
echo time().chr(10);
?>
Expected result:
----------------
1:0
1:0
1:0
2:0
2:0
2:0
ooo
3:0
3:0
0
Actual result:
--------------
1:0
1:0
1:5
2:5
2:5
2:5
ooo
3:5
3:5
5
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=46636&edit=1