From:
Operating system: Gentoo x86_64
PHP version: 5.2.14
Package: Sockets related
Bug Type: Bug
Bug description:fread is blocking even with the use of stream_select
Description:
------------
Using PHP CLI
Gentoo 64 bit box
PHP version 5.2.14
clean compile
Dual AMD Opteron 2212 CPU
Something is blocking in the code, it seems to be fread. I am sure this is
not the expected result.
I greatly simplified the sample I included.
I can just put the socket/stream in non-blocking mode, but I would much
prefer to use the code as I designed it.
I have considered just using the socket functions in php or just writing
the code in C.
Once in a great while it will resume after about thirty to sixty seconds.
In non-blocking mode I have no issues. This is a php cli script that
connects to another daemon running on the same machine, I am using this php
script to parse data to place in a sql database.
Test script:
---------------
$so...@fsockopen("localhost","7777",$errno,$errstr,3);
if (!$sock)
{
echo "sock error".$crlf;
}
while(true)
{
$read=array($sock);
$write=NULL;
$except=NULL;
$stat...@stream_select($read,$write,$except,1);
if ($status===false)
{
echo "select error".$crlf;
exit();
}
if ($status>0)
{
$data = @fread($sock,128);
echo $data;
$out .= $data;
}
usleep(10000);
}
Expected result:
----------------
The loop should run for eternity as expected.
Actual result:
--------------
The loop is blocked, I am presuming by fread due to a failure of the
expected behavior of stream_select.
--
Edit bug report at http://bugs.php.net/bug.php?id=52602&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=52602&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=52602&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=52602&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=52602&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=52602&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=52602&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=52602&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=52602&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=52602&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=52602&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=52602&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=52602&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=52602&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=52602&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52602&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=52602&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=52602&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=52602&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=52602&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=52602&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=52602&r=mysqlcfg
