/**
* Run the server.
*
* @return void
*/
public function run()
{
$this->_server->considerRemoteAddress(true);
$this->_server->connectAndWait();
while (true) {
$buffer = $this->_server->read(1024);
if (empty($buffer)) {
continue;
}
// Skip header.
$handle = substr($buffer, 12);
$domain = null;
// QNAME.
for ($i = 0, $m = strlen($handle); $i < $m; ++$i) {
if (0 === ($length = ord($handle[$i]))) {
break;
}
if (null !== $domain) {
$domain .= '.';
}
$domain .= substr($handle, $i + 1, $length);
$i += $length;
}
// QTYPE.
$i += 2;
$qtype = (int) (string) ord($handle[$i]) + (int) (string) ord($handle[$i + 1]);
$type = array_search($qtype, static::$_types) ?: $qtype;
// QCLASS.
$i += 2;
$qclass = (int) (string) ord($handle[$i]);
$class = array_search($qclass, static::$_classes) ?: $qclass;
$ips = $this->_on->fire('query', new Core\Event\Bucket(['domain' => $domain, 'type' => $type, 'class' => $class]));
$ip = null;
if (false === $ips[0]) {
$this->_server->writeAll($buffer[0] . $buffer[1] . pack('C', 1 << 7 | 1) . pack('C', 0 | 3) . pack('n', 0) . pack('n', 0) . pack('n', 0) . pack('n', 0));
continue;
}
foreach (explode('.', $ips[0]) as $foo) {
$ip .= pack('C', $foo);
}
$this->_server->writeAll($buffer[0] . $buffer[1] . pack('C', 1 << 7 | 1) . pack('C', 0) . $buffer[4] . $buffer[5] . pack('n', 1) . pack('n', 0) . pack('n', 0) . $handle . pack('CC', 192, 12) . pack('n', $qtype) . pack('n', $qclass) . pack('N', 60) . pack('n', 4) . $ip);
}
$this->_server->disconnect();
return;
}