ID: 10384
User Update by: [EMAIL PROTECTED]
Status: Open
Bug Type: Sockets related
Description: read() buffer memory not freed
Problem still exists in 4.0.5
The script originally uses ~2MB resident. After connections are accepted it begins
using memory in chunks specified in the read() function until it reaches ~6-6.5MB
(varies with each run), at which time it continues to run without allocating more
memory.
Previous Comments:
---------------------------------------------------------------------------
[2001-04-18 15:27:25] [EMAIL PROTECTED]
Using the following code:
<?
/* Allow the script to hang around waiting for connections. */
set_time_limit (0);
##### Connect to DB
mysql_connect('localhost','chatscript','jen481');
##### Open log file
$fp=fopen('chat_log','a');
$outMsgHeader="HTTP/1.1 200 OKrnDate: ";
$outMsgAfterDate=" GMTrnServer: PHPrnConnection: closernTransfer-Encoding:
chunkedrnContent-Type: text/htmlrnrn";
$outMsgFooter="rnrn";
$sock=open_listen_sock(1089);
if ($sock<0)
{
echo "socket() failed: reason: " . strerror ($sock) . "n";
exit;
}
if (($ret = listen ($sock, 5)) < 0)
{
echo "listen() failed: reason: " . strerror ($ret) . "n";
shutdown($sock,2);
exit;
}
do
{
if (($msgsock = accept_connect($sock)) < 0)
{
echo "accept_connect() failed: reason: " . strerror ($msgsock) . "n";
shutdown($sock,2);
exit;
}
$ret=read($msgsock,$buf,2048);
$isPost=strpos($buf,'POST');
if ($isPost===false)
{
$isGet=strpos($buf,'GET');
if ($isGET===false)
{
write($msgsock,' HTTP/1.1 405rn',13);
}
else
{
$startQS=strpos($buf,'?')+1;
$endQS=strpos($buf,' ',$startQS);
$lenQS=$endQS-$startQS;
$QS=substr($buf,$startQS,$lenQS);
}
}
else
{
do
{
$ret=read($msgsock,$buf,2048);
if (substr($buf,0,15)=="Content-length:")
{
$conLen=substr($buf,16);
}
} while ($buf != "n");
// through with headers, now get actual content
$ret=read($msgsock,$buf,$conLen);
// $buf now contains the query string
$QS=$buf;
}
$msgToSend=urlencode(procMsg($QS));
$msgLen=dechex(strlen($msgToSend));
$sendDate=gmdate('D, d M Y H:i:s');
$send=$outMsgHeader.$sendDate.$msgLen."rn".$msgToSend.$outMsgFooter;
write($msgsock,$send,strlen($send));
$log=$sendDate."t".$QS."t".$msgToSend."n";
fwrite($fp,$log);
close ($msgsock);
} while (true);
?>
(The function procMsg() is not relevent as for bug testing is set to return 'test')
Running this script causes memory to be consumed and not released with each
connection. I've narrowed the problem down to the read() function as I can affect the
rate of memory consumption by modifying the length argument. Evidently the buffer is
not freed.
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Full Bug description available at: http://bugs.php.net/?id=10384
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