Bug #64398 [Fbk->NoF]: strange stream_socket_client
Edit report at https://bugs.php.net/bug.php?id=64398&edit=1
ID: 64398
Updated by: php-bugs@lists.php.net
Reported by: michel dot sanchez dot 83 at gmail dot com
Summary: strange stream_socket_client
-Status: Feedback
+Status: No Feedback
Type: Bug
Package: Streams related
Operating System: Linux
PHP Version: 5.4.12
Private report: N
New Comment:
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
Previous Comments:
------------------------------------------------------------------------
[2014-04-02 12:34:08] mike@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves.
A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external
resources such as databases, etc. If the script requires a
database to demonstrate the issue, please make sure it creates
all necessary tables, stored procedures etc.
Please avoid embedding huge scripts into the report.
------------------------------------------------------------------------
[2013-03-09 09:05:41] michel dot sanchez dot 83 at gmail dot com
Description:
------------
In order to communicate with many servers at the same time in a persistent way, i use the
stream_socket_client function.
Once the connection is established with all the servers, I wait for the http timeout of each
connection.
The servers send a "close_wait".
When i try to reused the previous connections, a new connection is automaticaly establish with the
first server while all other connections are reused with a feof available.
Why the first connection not have the same comportment than other ?
Test script:
---------------
<!DOCTYPE html>
<meta charset="utf-8">
<title>Bug in stream_socket_client ?</title>
<pre><?php
ob_start();
$remotes = array (
'cl108.advertstream.com' => '91.121.95.33',
'cl109.advertstream.com' => '94.23.35.164',
'cl111.advertstream.com' => '94.23.206.224',
'cl121.advertstream.com' => '91.121.163.5',
);
$errno;
$errstr;
$read = [];
foreach ($remotes as $key => $target) {
do {
$socket = stream_socket_client(
'tcp://'.$target.':80',
$errno,
$errstr,
0.700,
STREAM_CLIENT_CONNECT | STREAM_CLIENT_PERSISTENT
);
stream_set_blocking($socket, 0);
$reused = (bool) ftell($socket);
fread($socket, 4096);
$want_close = feof($socket);
$local = stream_socket_get_name($socket, false);
if (true === $want_close) {
echo $key . ' (' . $local . '): want_close' . PHP_EOL;
fclose($socket);
continue;
}
if (true === $reused) {
echo $key . ' (' . $local . '): reused connection' . PHP_EOL;
} else {
echo $key . ' (' . $local . '): new connection' . PHP_EOL;
}
echo PHP_EOL;
break;
} while (true);
$read[] = $socket;
$message = "GET / HTTP/1.1\r\n".
"Host: $host\r\n".
"Connection: Keep-Alive\r\n".
"\r\n";
fwrite($socket, $message);
}
$write;
$except;
$originalRead = $read;
$success = 0;
$iteration = count($originalRead);
do {
stream_select($read, $write, $except, 0, 500e3);
foreach ($read as $stream) {
$bytes = fread($stream, 4096);
if (false !== strpos($bytes, "0\r\n\r\n")) {
$success++;
}
}
if ($iteration === $success) {
break;
}
$read = $originalRead;
} while (true);
ob_end_flush();
?></pre>
Expected result:
----------------
- calling script (1)
cl108.advertstream.com (192.168.2.10:59816): new connection
cl109.advertstream.com (192.168.2.10:52000): new connection
cl111.advertstream.com (192.168.2.10:43161): new connection
cl121.advertstream.com (192.168.2.10:39815): new connection
- watching netstat
tcp 0 0 michel-p6-2312ef.:59816 cl108.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:52000 cl109.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:43161 cl111.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:39815 cl121.advertstream:http ESTABLISHED
- waiting for http timeout...
- watching netstat
tcp 1 0 michel-p6-2312ef.:59816 cl108.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:52000 cl109.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:43161 cl111.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:39815 cl121.advertstream:http CLOSE_WAIT
- calling script (2)
cl108.advertstream.com (192.168.2.10:59816): want_close <<<< EXPECTED <<<<
cl108.advertstream.com (192.168.2.10:59821): new connection
cl109.advertstream.com (192.168.2.10:52000): want_close
cl109.advertstream.com (192.168.2.10:52005): new connection
cl111.advertstream.com (192.168.2.10:43161): want_close
cl111.advertstream.com (192.168.2.10:43166): new connection
cl121.advertstream.com (192.168.2.10:39815): want_close
cl121.advertstream.com (192.168.2.10:39820): new connection
- watching netstat
tcp 0 0 michel-p6-2312ef.:59821 cl108.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:52005 cl109.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:43166 cl111.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:39820 cl121.advertstream:http ESTABLISHED
- waiting for http timeout...
- watching netstat
tcp 1 0 michel-p6-2312ef.:59821 cl108.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:52005 cl109.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:43166 cl111.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:39820 cl121.advertstream:http CLOSE_WAIT
- calling script (3)
cl108.advertstream.com (192.168.2.10:59821): want_close <<<< EXPECTED <<<<
cl108.advertstream.com (192.168.2.10:59826): new connection
cl109.advertstream.com (192.168.2.10:52005): want_close
cl109.advertstream.com (192.168.2.10:52010): new connection
cl111.advertstream.com (192.168.2.10:43166): want_close
cl111.advertstream.com (192.168.2.10:43171): new connection
cl121.advertstream.com (192.168.2.10:39820): want_close
cl121.advertstream.com (192.168.2.10:39825): new connection
tcp 0 0 michel-p6-2312ef.:59826 cl108.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:52010 cl109.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:43171 cl111.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:39825 cl121.advertstream:http ESTABLISHED
- waiting for http timeout...
- watching netstat
tcp 1 0 michel-p6-2312ef.:59826 cl108.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:52010 cl109.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:43171 cl111.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:39825 cl121.advertstream:http CLOSE_WAIT
- ...
Actual result:
--------------
- calling script (1)
cl108.advertstream.com (192.168.2.10:59816): new connection
cl109.advertstream.com (192.168.2.10:52000): new connection
cl111.advertstream.com (192.168.2.10:43161): new connection
cl121.advertstream.com (192.168.2.10:39815): new connection
- watching netstat
tcp 0 0 michel-p6-2312ef.:59816 cl108.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:52000 cl109.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:43161 cl111.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:39815 cl121.advertstream:http ESTABLISHED
- waiting for http timeout...
- watching netstat
tcp 1 0 michel-p6-2312ef.:59816 cl108.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:52000 cl109.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:43161 cl111.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:39815 cl121.advertstream:http CLOSE_WAIT
- calling script (2)
cl108.advertstream.com (192.168.2.10:59821): new connection
cl109.advertstream.com (192.168.2.10:52000): want_close
cl109.advertstream.com (192.168.2.10:52005): new connection
cl111.advertstream.com (192.168.2.10:43161): want_close
cl111.advertstream.com (192.168.2.10:43166): new connection
cl121.advertstream.com (192.168.2.10:39815): want_close
cl121.advertstream.com (192.168.2.10:39820): new connection
- watching netstat
tcp 0 0 michel-p6-2312ef.:59821 cl108.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:52005 cl109.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:43166 cl111.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:39820 cl121.advertstream:http ESTABLISHED
- waiting for http timeout...
- watching netstat
tcp 1 0 michel-p6-2312ef.:59821 cl108.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:52005 cl109.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:43166 cl111.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:39820 cl121.advertstream:http CLOSE_WAIT
- calling script (3)
cl108.advertstream.com (192.168.2.10:59826): new connection
cl109.advertstream.com (192.168.2.10:52005): want_close
cl109.advertstream.com (192.168.2.10:52010): new connection
cl111.advertstream.com (192.168.2.10:43166): want_close
cl111.advertstream.com (192.168.2.10:43171): new connection
cl121.advertstream.com (192.168.2.10:39820): want_close
cl121.advertstream.com (192.168.2.10:39825): new connection
tcp 0 0 michel-p6-2312ef.:59826 cl108.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:52010 cl109.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:43171 cl111.advertstream:http ESTABLISHED
tcp 0 0 michel-p6-2312ef.:39825 cl121.advertstream:http ESTABLISHED
- waiting for http timeout...
- watching netstat
tcp 1 0 michel-p6-2312ef.:59826 cl108.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:52010 cl109.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:43171 cl111.advertstream:http CLOSE_WAIT
tcp 1 0 michel-p6-2312ef.:39825 cl121.advertstream:http CLOSE_WAIT
- ...
------------------------------------------------------------------------
--
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