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<?php declare(strict_types=1);
/*
* This file is part of the Monolog package.
*
* (c) Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Monolog\Handler\SyslogUdp;
use Monolog\Utils;
use Socket;
class UdpSocket
{
protected const DATAGRAM_MAX_LENGTH = 65023;
/** @var string */
protected $ip;
/** @var int */
protected $port;
/** @var resource|Socket|null */
protected $socket = null;
public function __construct(string $ip, int $port = 514)
{
$this->ip = $ip;
$this->port = $port;
}
/**
* @param string $line
* @param string $header
* @return void
*/
public function write($line, $header = "")
{
$this->send($this->assembleMessage($line, $header));
}
public function close(): void
{
if (is_resource($this->socket) || $this->socket instanceof Socket) {
socket_close($this->socket);
$this->socket = null;
}
}
/**
* @return resource|Socket
*/
protected function getSocket()
{
if (null !== $this->socket) {
return $this->socket;
}
$domain = AF_INET;
$protocol = SOL_UDP;
// Check if we are using unix sockets.
if ($this->port === 0) {
$domain = AF_UNIX;
$protocol = IPPROTO_IP;
}
$this->socket = socket_create($domain, SOCK_DGRAM, $protocol) ?: null;
if (null === $this->socket) {
throw new \RuntimeException('The UdpSocket to '.$this->ip.':'.$this->port.' could not be opened via socket_create');
}
return $this->socket;
}
protected function send(string $chunk): void
{
socket_sendto($this->getSocket(), $chunk, strlen($chunk), $flags = 0, $this->ip, $this->port);
}
protected function assembleMessage(string $line, string $header): string
{
$chunkSize = static::DATAGRAM_MAX_LENGTH - strlen($header);
return $header . Utils::substr($line, 0, $chunkSize);
}
}