PHP code example of react / dns

1. Go to this page and download the library: Download react/dns library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

react / dns example snippets


$config = React\Dns\Config\Config::loadSystemConfigBlocking();
if (!$config->nameservers) {
    $config->nameservers[] = '8.8.8.8';
}

$factory = new React\Dns\Resolver\Factory();
$dns = $factory->create($config);

$dns->resolve('igor.io')->then(function ($ip) {
    echo "Host: $ip\n";
});


$config = React\Dns\Config\Config::loadSystemConfigBlocking();
if (!$config->nameservers) {
    $config->nameservers[] = '8.8.8.8';
}

$factory = new React\Dns\Resolver\Factory();
$dns = $factory->createCached($config);

$dns->resolve('igor.io')->then(function ($ip) {
    echo "Host: $ip\n";
});

...

$dns->resolve('igor.io')->then(function ($ip) {
    echo "Host: $ip\n";
});


$cache = new React\Cache\ArrayCache();
$factory = new React\Dns\Resolver\Factory();
$dns = $factory->createCached('8.8.8.8', null, $cache);


$resolver->resolve('reactphp.org')->then(function ($ip) {
    echo 'IP for reactphp.org is ' . $ip . PHP_EOL;
});


$promise = $resolver->resolve('reactphp.org');

$promise->cancel();


$resolver->resolveAll('reactphp.org', Message::TYPE_A)->then(function ($ips) {
    echo 'IPv4 addresses for reactphp.org ' . implode(', ', $ips) . PHP_EOL;
});

$resolver->resolveAll('reactphp.org', Message::TYPE_AAAA)->then(function ($ips) {
    echo 'IPv6 addresses for reactphp.org ' . implode(', ', $ips) . PHP_EOL;
});


$promise = $resolver->resolveAll('reactphp.org', Message::TYPE_AAAA);

$promise->cancel();


$executor = new UdpTransportExecutor('8.8.8.8:53');

$executor->query(
    new Query($name, Message::TYPE_AAAA, Message::CLASS_IN)
)->then(function (Message $message) {
    foreach ($message->answers as $answer) {
        echo 'IPv6: ' . $answer->data . PHP_EOL;
    }
}, 'printf');


$executor = new TimeoutExecutor(
    new UdpTransportExecutor($nameserver),
    3.0
);


$executor = new RetryExecutor(
    new TimeoutExecutor(
        new UdpTransportExecutor($nameserver),
        3.0
    )
);


$executor = new CoopExecutor(
    new RetryExecutor(
        new TimeoutExecutor(
            new UdpTransportExecutor($nameserver),
            3.0
        )
    )
);


$executor = new TcpTransportExecutor('8.8.8.8:53');

$executor->query(
    new Query($name, Message::TYPE_AAAA, Message::CLASS_IN)
)->then(function (Message $message) {
    foreach ($message->answers as $answer) {
        echo 'IPv6: ' . $answer->data . PHP_EOL;
    }
}, 'printf');


$executor = new TimeoutExecutor(
    new TcpTransportExecutor($nameserver),
    3.0
);


$executor = new CoopExecutor(
    new TimeoutExecutor(
        new TcpTransportExecutor($nameserver),
        3.0
    )
);


$executor = new SelectiveTransportExecutor($udpExecutor, $tcpExecutor);

$executor->query(
    new Query($name, Message::TYPE_AAAA, Message::CLASS_IN)
)->then(function (Message $message) {
    foreach ($message->answers as $answer) {
        echo 'IPv6: ' . $answer->data . PHP_EOL;
    }
}, 'printf');


$executor = new CoopExecutor(
    new SelectiveTransportExecutor(
        $datagramExecutor,
        $streamExecutor
    )
);


$hosts = \React\Dns\Config\HostsFile::loadFromPathBlocking();

$executor = new UdpTransportExecutor('8.8.8.8:53');
$executor = new HostsFileExecutor($hosts, $executor);

$executor->query(
    new Query('localhost', Message::TYPE_A, Message::CLASS_IN)
);