Bug #70813 [Fbk]: connection_status(), connection_aborted() not working

From: Date: Thu, 07 Oct 2021 12:32:27 +0000
Subject: Bug #70813 [Fbk]: connection_status(), connection_aborted() not working
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-237080@lists.php.net to get a copy of this message
Edit report at https://bugs.php.net/bug.php?id=70813&edit=1

 ID:                 70813
 Updated by:         cmb@php.net
 Reported by:        sivann at gmail dot com
 Summary:            connection_status(), connection_aborted() not
                     working
 Status:             Feedback
 Type:               Bug
 Package:            Network related
 Operating System:   Fedora 22
 PHP Version:        5.6.14
 Assigned To:        cmb
 Block user comment: N
 Private report:     N

 New Comment:

> The script never stops running.

This is what I cannot reproduce.


Previous Comments:
------------------------------------------------------------------------
[2021-10-07 12:31:31] cmb@php.net

I cannot reproduce that with PHP-7.4 on Windows, neither with
httpd nor with the built-in server.  Is this still an issue for
you with any of the actively supported PHP versions[1]?

> connection_status(), connection_aborted () never detect closed
> remote connection.

You must ignore user aborts for these functions to work as
expected[2].

[1] <https://www.php.net/supported-versions.php>
[2] <https://www.php.net/manual/en/features.connection-handling.php>

------------------------------------------------------------------------
[2015-10-29 15:11:42] sivann at gmail dot com

httpd-2.4.16 (apache)

------------------------------------------------------------------------
[2015-10-29 14:59:55] sivann at gmail dot com

Description:
------------
connection_status(), connection_aborted () never detect closed remote connection.

After closing connection initiated from client (e.g. wget) connection state becomes CLOSE_WAIT from
ESTABLISHED, but those two functions called in a loop never detect that, even when outputing data.

Current solution is to popen netstat, or parse /proc/net/tcp, /proc/net/tcp6 to find if connection
is established.

connection_status/connection_aborted should detect the connection loss even without writing
anything. Currently those functions do nothing.

Test script:
---------------
<?php
ignore_user_abort(false);
function fecho($str) {
    file_put_contents("conlog.txt",$str."",FILE_APPEND);
}
while (1) {
    sleep (1);
    $d=date(DATE_RFC2822);
    $remport=$_SERVER['REMOTE_PORT'];
    $remip =
$_SERVER['REMOTE_ADDR']?:($_SERVER['HTTP_X_FORWARDED_FOR']?:$_SERVER['HTTP_CLIENT_IP']);
   
file_put_contents("conlog.txt","date:$d\tip:$remip\tport:$remport\tstatus:$constatus\n",FILE_APPEND);
    echo "...\n"; 
    flush();
    if (connection_status()!= CONNECTION_NORMAL){ //never works
        file_put_contents("conlog.txt","connection closed\n",FILE_APPEND);
        break;
    }
    file_put_contents("conlog.txt","connection_status=".connection_status().
        " connection_aborted():".connection_aborted()."\n",FILE_APPEND);
}
?>


Expected result:
----------------
The above writes on a file named conlog.txt. Call the above script with wget. The script should
start writing data to conlog.txt at the server. Then press Ctrl+C to stop wget. The script should
end. 



Actual result:
--------------
The script never stops running.


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



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Edit this bug report at https://bugs.php.net/bug.php?id=70813&edit=1


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