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<?php
namespace React\Dns\Query;
use React\Dns\Model\Message;
/**
* This class represents a single question in a query/response message
*
* It uses a structure similar to `\React\Dns\Message\Record`, but does not
* contain fields for resulting TTL and resulting record data (IPs etc.).
*
* @link https://tools.ietf.org/html/rfc1035#section-4.1.2
* @see \React\Dns\Message\Record
*/
final class Query
{
/**
* @var string query name, i.e. hostname to look up
*/
public $name;
/**
* @var int query type (aka QTYPE), see Message::TYPE_* constants
*/
public $type;
/**
* @var int query class (aka QCLASS), see Message::CLASS_IN constant
*/
public $class;
/**
* @param string $name query name, i.e. hostname to look up
* @param int $type query type, see Message::TYPE_* constants
* @param int $class query class, see Message::CLASS_IN constant
*/
public function __construct($name, $type, $class)
{
$this->name = $name;
$this->type = $type;
$this->class = $class;
}
/**
* Describes the hostname and query type/class for this query
*
* The output format is supposed to be human readable and is subject to change.
* The format is inspired by RFC 3597 when handling unkown types/classes.
*
* @return string "example.com (A)" or "example.com (CLASS0 TYPE1234)"
* @link https://tools.ietf.org/html/rfc3597
*/
public function describe()
{
$class = $this->class !== Message::CLASS_IN ? 'CLASS' . $this->class . ' ' : '';
$type = 'TYPE' . $this->type;
$ref = new \ReflectionClass('React\Dns\Model\Message');
foreach ($ref->getConstants() as $name => $value) {
if ($value === $this->type && \strpos($name, 'TYPE_') === 0) {
$type = \substr($name, 5);
break;
}
}
return $this->name . ' (' . $class . $type . ')';
}
}
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