dns-over-https/README.md

dns

danog/dns-over-https provides asynchronous and secure DNS-over-HTTPS name resolution for Amp.
Supports RFC 8484 POST and GET syntaxes as well as Google's proprietary JSON DNS format.
Supports passing custom headers for domain fronting with google DNS.

Installation

composer require danog/dns-over-https

Example

<?php

require __DIR__ . '/examples/_bootstrap.php';

use Amp\DoH;
use Amp\Dns;
use Amp\Loop;

Loop::run(function () {
    // Set default resolver to DNS-over-HTTPS resolver
    $DohConfig = new DoH\DoHConfig([new DoH\Nameserver('https://mozilla.cloudflare-dns.com/dns-query')]); // Defaults to DoH\Nameserver::RFC8484_POST
    Dns\resolver(new DoH\Rfc8484StubResolver($DohConfig));

    $githubIpv4 = yield Dns\resolve("github.com", Dns\Record::A);
    pretty_print_records("github.com", $githubIpv4);

    $googleIpv4 = Amp\Dns\resolve("google.com", Dns\Record::A);
    $googleIpv6 = Amp\Dns\resolve("google.com", Dns\Record::AAAA);

    $firstGoogleResult = yield Amp\Promise\first([$googleIpv4, $googleIpv6]);
    pretty_print_records("google.com", $firstGoogleResult);

    $combinedGoogleResult = yield Amp\Dns\resolve("google.com");
    pretty_print_records("google.com", $combinedGoogleResult);

    $googleMx = yield Amp\Dns\query("google.com", Amp\Dns\Record::MX);
    pretty_print_records("google.com", $googleMx);
});