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<?php
/**
* $Id$
*
* Author: David Danier, david.danier@team23.de
* Project: Serverstats, http://serverstats.berlios.de/
* License: GPL v2 or later (http://www.gnu.org/licenses/gpl.html)
*
* Copyright (C) 2005 David Danier
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
class ping_http extends source implements source_rrd
{
private $host;
private $port;
private $path;
private $command;
private $timeout;
private $ping_time;
public function __construct($host, $port = 80, $path = '/', $command = 'HEAD', $timeout = 1)
{
$this->host = $host;
$this->port = $port;
$this->path = $path;
$this->command = $command;
$this->timeout = $timeout;
}
public function refreshData()
{
$timer = array();
$timer['start'] = microtime(true);
$socket = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout);
if (!is_resource($socket))
{
throw new Exception('Could not open connection');
}
$timer['open'] = microtime(true);
socket_set_timeout($socket, $this->timeout);
socket_set_blocking($socket, true); // just to be sure
if (feof($socket))
{
throw new Exception('Connection closed while sending command');
}
$http_request = $this->command . ' ' . $this->path . " HTTP/1.1\r\n" .
'Host: ' . $this->host . "\r\n" .
"User-Agent: Serverstats::ping_http\r\n" .
"Connection: close\r\n\r\n";
fputs($socket, $http_request);
$timer['send'] = microtime(true);
while(!feof($socket))
{
if (fread($socket, 4096) === false)
{
throw new Exception('Communication error, could not fetch result');
}
}
$timer['receive'] = microtime(true);
fclose($socket);
$timer['finish'] = microtime(true);
$this->ping_time = array(
'time' => $timer['finish'] - $timer['start'],
'open' => $timer['open'] - $timer['start'],
'send' => $timer['send'] - $timer['open'],
'receive' => $timer['receive'] - $timer['send'],
'close' => $timer['finish'] - $timer['receive']
);
}
public function initRRD(rrd $rrd)
{
$rrd->addDatasource('time', 'GAUGE', null, 0);
$rrd->addDatasource('open', 'GAUGE', null, 0);
$rrd->addDatasource('send', 'GAUGE', null, 0);
$rrd->addDatasource('receive', 'GAUGE', null, 0);
$rrd->addDatasource('close', 'GAUGE', null, 0);
}
public function fetchValues()
{
return $this->ping_time;
}
}
?>
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