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<?php
 use React\Dns\Config\Config;
 use React\Dns\Resolver\Factory;
 use React\Dns\Model\Message;
 
 require __DIR__ . '/../vendor/autoload.php';
 
 $loop = React\EventLoop\Factory::create();
 
 $config = Config::loadSystemConfigBlocking();
 $server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
 
 $factory = new Factory();
 $resolver = $factory->create($server, $loop);
 
 $name = isset($argv[1]) ? $argv[1] : 'www.google.com';
 
 $resolver->resolveAll($name, Message::TYPE_A)->then(function (array $ips) use ($name) {
 echo 'IPv4 addresses for ' . $name . ': ' . implode(', ', $ips) . PHP_EOL;
 }, function (Exception $e) use ($name) {
 echo 'No IPv4 addresses for ' . $name . ': ' . $e->getMessage() . PHP_EOL;
 });
 
 $resolver->resolveAll($name, Message::TYPE_AAAA)->then(function (array $ips) use ($name) {
 echo 'IPv6 addresses for ' . $name . ': ' . implode(', ', $ips) . PHP_EOL;
 }, function (Exception $e) use ($name) {
 echo 'No IPv6 addresses for ' . $name . ': ' . $e->getMessage() . PHP_EOL;
 });
 
 $loop->run();
 
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