diff --git a/composer.json b/composer.json
index 3bc20c5..fe3876c 100644
--- a/composer.json
+++ b/composer.json
@@ -47,7 +47,7 @@
         "danog/libdns-json": "^0.1",
         "daverandom/libdns": "^2.0.1",
         "amphp/amp": "^2",
-        "amphp/artax": "dev-master",
+        "amphp/http-client": "4.0-rc10",
         "amphp/dns": "dev-master as v0.9.x-dev",
         "ext-filter": "*",
         "ext-json": "*"
diff --git a/examples/benchmark.php b/examples/benchmark.php
index 343f331..a43b543 100644
--- a/examples/benchmark.php
+++ b/examples/benchmark.php
@@ -8,7 +8,7 @@ use Amp\Loop;
 
 print "Downloading top 500 domains..." . PHP_EOL;
 
-$domains = \file_get_contents("https://moz.com/top-500/download?table=top500Domains");
+$domains = \file_get_contents("https://moz.com/top-500/download/?table=top500Domains");
 $domains = \array_map(function ($line) {
     return \trim(\explode(",", $line)[1], '"/');
 }, \array_filter(\explode("\n", $domains)));
diff --git a/examples/domain-fronting.php b/examples/domain-fronting.php
deleted file mode 100644
index 79915a0..0000000
--- a/examples/domain-fronting.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-require __DIR__ . "/_bootstrap.php";
-
-use Amp\Dns;
-use Amp\DoH;
-use Amp\DoH\Nameserver;
-use Amp\Loop;
-
-// Set default resolver to DNS-over-https resolver
-$DohConfig = new DoH\DoHConfig([new DoH\Nameserver('https://google.com/resolve', Nameserver::GOOGLE_JSON, ["Host" => "dns.google.com"])]);
-Dns\resolver(new DoH\Rfc8484StubResolver($DohConfig));
-
-Loop::run(function () {
-    $hostname = "amphp.org";
-
-    try {
-        pretty_print_records($hostname, yield Dns\resolve($hostname));
-    } catch (Dns\DnsException $e) {
-        pretty_print_error($hostname, $e);
-    }
-});
diff --git a/lib/DoHConfig.php b/lib/DoHConfig.php
index b929808..b310aa4 100644
--- a/lib/DoHConfig.php
+++ b/lib/DoHConfig.php
@@ -2,8 +2,6 @@
 
 namespace Amp\DoH;
 
-use Amp\Artax\Client;
-use Amp\Artax\DefaultClient;
 use Amp\Cache\ArrayCache;
 use Amp\Cache\Cache;
 use Amp\Dns\ConfigException;
@@ -12,16 +10,18 @@ use Amp\Dns\Resolver;
 use Amp\Dns\Rfc1035StubResolver;
 use Amp\Dns\UnixConfigLoader;
 use Amp\Dns\WindowsConfigLoader;
+use Amp\Http\Client\DelegateHttpClient;
+use Amp\Http\Client\HttpClientBuilder;
 
 final class DoHConfig
 {
     private $nameservers;
-    private $artax;
+    private $httpClient;
     private $subResolver;
     private $configLoader;
     private $cache;
 
-    public function __construct(array $nameservers, Client $artax = null, Resolver $resolver = null, ConfigLoader $configLoader = null, Cache $cache = null)
+    public function __construct(array $nameservers, DelegateHttpClient $httpClient = null, Resolver $resolver = null, ConfigLoader $configLoader = null, Cache $cache = null)
     {
         if (\count($nameservers) < 1) {
             throw new ConfigException("At least one nameserver is required for a valid config");
@@ -32,7 +32,7 @@ final class DoHConfig
         }
 
         $this->nameservers = $nameservers;
-        $this->artax = $artax ?? new DefaultClient();
+        $this->httpClient = $httpClient ?? HttpClientBuilder::buildDefault();
         $this->cache = $cache ?? new ArrayCache(5000/* default gc interval */, 256/* size */);
         $this->configLoader = $configLoader ?? (\stripos(PHP_OS, "win") === 0
             ? new WindowsConfigLoader
@@ -61,9 +61,9 @@ final class DoHConfig
         return false;
     }
 
-    public function getArtax(): Client
+    public function getHttpClient(): DelegateHttpClient
     {
-        return $this->artax;
+        return $this->httpClient;
     }
 
     public function getCache(): Cache
diff --git a/lib/Internal/HttpsSocket.php b/lib/Internal/HttpsSocket.php
index 26c39cb..4af5cac 100644
--- a/lib/Internal/HttpsSocket.php
+++ b/lib/Internal/HttpsSocket.php
@@ -2,10 +2,10 @@
 
 namespace Amp\DoH\Internal;
 
-use Amp\Artax\Client;
-use Amp\Artax\Request;
 use Amp\DoH\DoHException;
 use Amp\DoH\Nameserver;
+use Amp\Http\Client\DelegateHttpClient;
+use Amp\Http\Client\Request;
 use Amp\Promise;
 use danog\LibDNSJson\JsonDecoderFactory;
 use danog\LibDNSJson\QueryEncoderFactory;
@@ -17,7 +17,7 @@ use function Amp\call;
 /** @internal */
 final class HttpsSocket extends Socket
 {
-    /** @var \Amp\Artax\Client */
+    /** @var \Amp\Http\HttpClient */
     private $httpClient;
 
     /** @var \Amp\DoH\Nameserver */
@@ -32,14 +32,14 @@ final class HttpsSocket extends Socket
     /** @var \Amp\Deferred */
     private $responseDeferred;
 
-    public static function connect(Client $artax, Nameserver $nameserver): Socket
+    public static function connect(DelegateHttpClient $httpClient, Nameserver $nameserver): Socket
     {
-        return new self($artax, $nameserver);
+        return new self($httpClient, $nameserver);
     }
 
-    protected function __construct(Client $artax, Nameserver $nameserver)
+    protected function __construct(DelegateHttpClient $httpClient, Nameserver $nameserver)
     {
-        $this->httpClient = $artax;
+        $this->httpClient = $httpClient;
         $this->nameserver = $nameserver;
 
         if ($nameserver->getType() !== Nameserver::GOOGLE_JSON) {
@@ -60,23 +60,24 @@ final class HttpsSocket extends Socket
         switch ($this->nameserver->getType()) {
             case Nameserver::RFC8484_GET:
                 $data = $this->encoder->encode($message);
-                $request = (new Request($this->nameserver->getUri().'?'.\http_build_query(['dns' => \base64_encode($data), 'ct' => 'application/dns-message']), "GET"))
-                    ->withHeader('accept', 'application/dns-message')
-                    ->withHeaders($this->nameserver->getHeaders());
+                $request = new Request($this->nameserver->getUri().'?'.\http_build_query(['dns' => \base64_encode($data), 'ct' => 'application/dns-message']), "GET");
+                $request->setHeader('accept', 'application/dns-message');
+                $request->setHeaders($this->nameserver->getHeaders());
                 break;
             case Nameserver::RFC8484_POST:
                 $data = $this->encoder->encode($message);
-                $request = (new Request($this->nameserver->getUri(), "POST"))
-                    ->withBody($data)
-                    ->withHeader('content-type', 'application/dns-message')
-                    ->withHeader('accept', 'application/dns-message')
-                    ->withHeaders($this->nameserver->getHeaders());
+                $request = new Request($this->nameserver->getUri(), "POST");
+                $request->setBody($data);
+                $request->setHeader('content-type', 'application/dns-message');
+                $request->setHeader('accept', 'application/dns-message');
+                $request->setHeader('content-length', strlen($data));
+                $request->setHeaders($this->nameserver->getHeaders());
                 break;
             case Nameserver::GOOGLE_JSON:
                 $data = $this->encoder->encode($message);
-                $request = (new Request($this->nameserver->getUri().'?'.$data, "GET"))
-                    ->withHeader('accept', 'application/dns-json')
-                    ->withHeaders($this->nameserver->getHeaders());
+                $request = new Request($this->nameserver->getUri().'?'.$data, "GET");
+                $request->setHeader('accept', 'application/dns-json');
+                $request->setHeaders($this->nameserver->getHeaders());
                 break;
         }
         $response = $this->httpClient->request($request);
@@ -85,8 +86,7 @@ final class HttpsSocket extends Socket
             if ($response->getStatus() !== 200) {
                 throw new DoHException("HTTP result !== 200: ".$response->getStatus()." ".$response->getReason(), $response->getStatus());
             }
-            $response = yield $response->getBody();
-
+            $response = yield $response->getBody()->buffer();
 
             switch ($this->nameserver->getType()) {
                 case Nameserver::RFC8484_GET:
diff --git a/lib/Internal/Socket.php b/lib/Internal/Socket.php
index 0dee5b5..5debc5a 100644
--- a/lib/Internal/Socket.php
+++ b/lib/Internal/Socket.php
@@ -3,14 +3,13 @@
 namespace Amp\DoH\Internal;
 
 use Amp;
-use Amp\Artax\Client;
-use Amp\Artax\Response;
 use Amp\ByteStream\StreamException;
 use Amp\Deferred;
 use Amp\Dns\DnsException;
 use Amp\Dns\TimeoutException;
 use Amp\DoH\DoHException;
 use Amp\DoH\Nameserver;
+use Amp\Http\Client\DelegateHttpClient;
 use Amp\Promise;
 use LibDNS\Messages\Message;
 use LibDNS\Messages\MessageFactory;
@@ -41,7 +40,7 @@ abstract class Socket
      * @return Promise<self>
      */
 
-    abstract public static function connect(Client $artax, Nameserver $nameserver): self;
+    abstract public static function connect(DelegateHttpClient $httpClient, Nameserver $nameserver): self;
 
     /**
      * @param Message $message
@@ -147,7 +146,7 @@ abstract class Socket
             $message = "Unexpected error during resolution: ".$exception->getMessage();
             $exception = new DnsException($message, 0, $exception);
         }
-
+        
         $pending = $this->pending;
         $this->pending = [];
 
diff --git a/lib/Rfc8484StubResolver.php b/lib/Rfc8484StubResolver.php
index 3f6a2c5..8376d4f 100644
--- a/lib/Rfc8484StubResolver.php
+++ b/lib/Rfc8484StubResolver.php
@@ -147,7 +147,15 @@ final class Rfc8484StubResolver implements Resolver
                                 if ($reason instanceof NoRecordException) {
                                     throw $reason;
                                 }
-                                $errors[] = $reason->getMessage();
+                                $error = $reason->getMessage();
+                                if ($reason instanceof MultiReasonException) {
+                                    $reasons = [];
+                                    foreach ($reason->getReasons() as $reason) {
+                                        $reasons []= $reason->getMessage();
+                                    }
+                                    $error .= " (".implode(", ", $reasons).")";
+                                }
+                                $errors[] = $error;
                             }
 
                             throw new DnsException("All query attempts failed for {$name}: ".\implode(", ", $errors), 0, $e);
@@ -254,6 +262,8 @@ final class Rfc8484StubResolver implements Resolver
 
             $attemptDescription = [];
 
+            $exceptions = [];
+            
             while ($attempt < $attempts) {
                 try {
                     $attemptDescription[] = $nameserver;
@@ -263,6 +273,7 @@ final class Rfc8484StubResolver implements Resolver
                         $response = yield $socket->ask($question, $this->config->getTimeout());
                     } catch (DoHException $e) {
                         // Defer call, because it might interfere with the unreference() call in Internal\Socket otherwise
+                        $exceptions []= $e;
 
                         $i = ++$attempt % \count($nameservers);
                         $nameserver = $nameservers[$i];
@@ -319,13 +330,17 @@ final class Rfc8484StubResolver implements Resolver
                 }
             }
 
-            throw new TimeoutException(\sprintf(
+            $timeout = new TimeoutException(\sprintf(
                 "No response for '%s' (%s) from any nameserver after %d attempts, tried %s",
                 $name,
                 Record::getName($type),
                 $attempts,
                 \implode(", ", $attemptDescription)
             ));
+            if (!$exceptions) {
+                throw $timeout;
+            }
+            throw new MultiReasonException($exceptions, $timeout->getMessage());
         });
 
         $this->pendingQueries[$type." ".$name] = $promise;
@@ -401,7 +416,7 @@ final class Rfc8484StubResolver implements Resolver
             return $this->sockets[$uri];
         }
 
-        $this->sockets[$uri] = HttpsSocket::connect($this->dohConfig->getArtax(), $nameserver);
+        $this->sockets[$uri] = HttpsSocket::connect($this->dohConfig->getHttpClient(), $nameserver);
 
         return $this->sockets[$uri];
     }
diff --git a/test/DoHConfigTest.php b/test/DoHConfigTest.php
index 1b84d09..13b5ed9 100644
--- a/test/DoHConfigTest.php
+++ b/test/DoHConfigTest.php
@@ -2,7 +2,6 @@
 
 namespace Amp\DoH\Test;
 
-use Amp\Artax\DefaultClient;
 use Amp\Cache\ArrayCache;
 use Amp\Dns\ConfigException;
 use Amp\Dns\Rfc1035StubResolver;
@@ -10,6 +9,7 @@ use Amp\Dns\UnixConfigLoader;
 use Amp\Dns\WindowsConfigLoader;
 use Amp\DoH\DoHConfig;
 use Amp\DoH\Nameserver;
+use Amp\Http\Client\HttpClientBuilder;
 use Amp\PHPUnit\TestCase;
 
 class DoHConfigTest extends TestCase
@@ -31,8 +31,8 @@ class DoHConfigTest extends TestCase
             [[new Nameserver('https://cloudflare-dns.com/dns-query', Nameserver::RFC8484_POST)]],
             [[new Nameserver('https://cloudflare-dns.com/dns-query', Nameserver::RFC8484_GET)]],
             [[new Nameserver('https://cloudflare-dns.com/dns-query', Nameserver::GOOGLE_JSON)]],
-            [[new Nameserver('https://google.com/resolve', Nameserver::GOOGLE_JSON, ["host" => "dns.google.com"])]],
-            [[new Nameserver('https://cloudflare-dns.com/dns-query', Nameserver::GOOGLE_JSON), new Nameserver('https://google.com/resolve', Nameserver::GOOGLE_JSON, ["host" => "dns.google.com"])]],
+            [[new Nameserver('https://dns.google/resolve', Nameserver::GOOGLE_JSON)]],
+            [[new Nameserver('https://cloudflare-dns.com/dns-query', Nameserver::GOOGLE_JSON), new Nameserver('dns.google/resolve', Nameserver::GOOGLE_JSON)]],
         ];
     }
 
@@ -74,19 +74,19 @@ class DoHConfigTest extends TestCase
     }
 
     /**
-     * @param \Amp\Artax\Client $client Valid artax instance
+     * @param \Amp\Http\Client\DelegateHttpClient $client Valid HttpClient instance
      *
-     * @dataProvider provideValidArtax
+     * @dataProvider provideValidHttpClient
      */
-    public function testAcceptsValidArtax($client)
+    public function testAcceptsValidHttpClient($client)
     {
         $this->assertInstanceOf(DoHConfig::class, new DoHConfig([new Nameserver('https://cloudflare-dns.com/dns-query')], $client));
     }
 
-    public function provideValidArtax()
+    public function provideValidHttpClient()
     {
         return [
-            [new DefaultClient()],
+            [HttpClientBuilder::buildDefault()],
         ];
     }
     /**
diff --git a/test/HttpsSocketTest.php b/test/HttpsSocketTest.php
index af25029..d145d10 100644
--- a/test/HttpsSocketTest.php
+++ b/test/HttpsSocketTest.php
@@ -2,11 +2,11 @@
 
 namespace Amp\DoH\Test;
 
-use Amp\Artax\DefaultClient;
 use Amp\Dns;
 use Amp\DoH;
 use Amp\DoH\Internal\Socket;
 use Amp\DoH\Nameserver;
+use Amp\Http\Client\HttpClientBuilder;
 use LibDNS\Records\QuestionFactory;
 use function Amp\Promise\wait;
 
@@ -14,7 +14,7 @@ class HttpsSocketTest extends SocketTest
 {
     protected function connect(Nameserver $nameserver): Socket
     {
-        return DoH\Internal\HttpsSocket::connect(new DefaultClient(), $nameserver);
+        return DoH\Internal\HttpsSocket::connect(HttpClientBuilder::buildDefault(), $nameserver);
     }
 
     public function testTimeout()
diff --git a/test/IntegrationTest.php b/test/IntegrationTest.php
index 98d9cca..83a22b6 100644
--- a/test/IntegrationTest.php
+++ b/test/IntegrationTest.php
@@ -133,7 +133,7 @@ class IntegrationTest extends TestCase
 
             /** @var Record $record */
             $record = $result[0];
-            $this->assertSame("google-public-dns-b.google.com", $record->getValue());
+            $this->assertSame("dns.google", $record->getValue());
             $this->assertNotNull($record->getTtl());
             $this->assertSame(Record::PTR, $record->getType());
         });
@@ -194,7 +194,7 @@ class IntegrationTest extends TestCase
             ['https://mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_POST],
             ['https://mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_GET],
             ['https://mozilla.cloudflare-dns.com/dns-query', Nameserver::GOOGLE_JSON],
-            ['https://google.com/resolve', Nameserver::GOOGLE_JSON, ["Host" => "dns.google.com"]],
+            ['https://dns.google/resolve', Nameserver::GOOGLE_JSON],
         ];
         $result = [];
         for ($start = 0; $start < \count($nameservers); $start++) {
diff --git a/test/NameserverTest.php b/test/NameserverTest.php
index 444922f..601319d 100644
--- a/test/NameserverTest.php
+++ b/test/NameserverTest.php
@@ -25,7 +25,7 @@ class NameserverTest extends TestCase
             ['https://mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_POST],
             ['https://mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_GET],
             ['https://mozilla.cloudflare-dns.com/dns-query', Nameserver::GOOGLE_JSON],
-            ['https://google.com/resolve', Nameserver::GOOGLE_JSON, ["Host" => "dns.google.com"]],
+            ['https://dns.google/resolve', Nameserver::GOOGLE_JSON],
         ];
     }
 
@@ -62,13 +62,13 @@ class NameserverTest extends TestCase
             ['http://mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_POST],
             ['http://mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_GET],
             ['http://mozilla.cloudflare-dns.com/dns-query', Nameserver::GOOGLE_JSON],
-            ['http://google.com/resolve', Nameserver::GOOGLE_JSON, ["Host" => "dns.google.com"]],
+            ['http://dns.google/resolve', Nameserver::GOOGLE_JSON],
 
             ['mozilla.cloudflare-dns.com/dns-query'],
             ['mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_POST],
             ['mozilla.cloudflare-dns.com/dns-query', Nameserver::RFC8484_GET],
             ['mozilla.cloudflare-dns.com/dns-query', Nameserver::GOOGLE_JSON],
-            ['google.com/resolve', Nameserver::GOOGLE_JSON, ["Host" => "dns.google.com"]],
+            ['dns.google/resolve', Nameserver::GOOGLE_JSON],
 
             ['https://mozilla.cloudflare-dns.com/dns-query', 100],
             ['https://mozilla.cloudflare-dns.com/dns-query', -1],