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vendor/symfony/http-client/Internal/AmpClientState.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpClient\Internal;
+
+use Amp\CancellationToken;
+use Amp\Deferred;
+use Amp\Http\Client\Connection\ConnectionLimitingPool;
+use Amp\Http\Client\Connection\DefaultConnectionFactory;
+use Amp\Http\Client\InterceptedHttpClient;
+use Amp\Http\Client\Interceptor\RetryRequests;
+use Amp\Http\Client\PooledHttpClient;
+use Amp\Http\Client\Request;
+use Amp\Http\Client\Response;
+use Amp\Http\Tunnel\Http1TunnelConnector;
+use Amp\Http\Tunnel\Https1TunnelConnector;
+use Amp\Promise;
+use Amp\Socket\Certificate;
+use Amp\Socket\ClientTlsContext;
+use Amp\Socket\ConnectContext;
+use Amp\Socket\Connector;
+use Amp\Socket\DnsConnector;
+use Amp\Socket\SocketAddress;
+use Amp\Success;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Internal representation of the Amp client's state.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+final class AmpClientState extends ClientState
+{
+    public $dnsCache = [];
+    public $responseCount = 0;
+    public $pushedResponses = [];
+
+    private $clients = [];
+    private $clientConfigurator;
+    private $maxHostConnections;
+    private $maxPendingPushes;
+    private $logger;
+
+    public function __construct(?callable $clientConfigurator, int $maxHostConnections, int $maxPendingPushes, ?LoggerInterface &$logger)
+    {
+        $this->clientConfigurator = $clientConfigurator ?? static function (PooledHttpClient $client) {
+            return new InterceptedHttpClient($client, new RetryRequests(2));
+        };
+        $this->maxHostConnections = $maxHostConnections;
+        $this->maxPendingPushes = $maxPendingPushes;
+        $this->logger = &$logger;
+    }
+
+    /**
+     * @return Promise<Response>
+     */
+    public function request(array $options, Request $request, CancellationToken $cancellation, array &$info, \Closure $onProgress, &$handle): Promise
+    {
+        if ($options['proxy']) {
+            if ($request->hasHeader('proxy-authorization')) {
+                $options['proxy']['auth'] = $request->getHeader('proxy-authorization');
+            }
+
+            // Matching "no_proxy" should follow the behavior of curl
+            $host = $request->getUri()->getHost();
+            foreach ($options['proxy']['no_proxy'] as $rule) {
+                $dotRule = '.'.ltrim($rule, '.');
+
+                if ('*' === $rule || $host === $rule || substr($host, -\strlen($dotRule)) === $dotRule) {
+                    $options['proxy'] = null;
+                    break;
+                }
+            }
+        }
+
+        $request = clone $request;
+
+        if ($request->hasHeader('proxy-authorization')) {
+            $request->removeHeader('proxy-authorization');
+        }
+
+        if ($options['capture_peer_cert_chain']) {
+            $info['peer_certificate_chain'] = [];
+        }
+
+        $request->addEventListener(new AmpListener($info, $options['peer_fingerprint']['pin-sha256'] ?? [], $onProgress, $handle));
+        $request->setPushHandler(function ($request, $response) use ($options): Promise {
+            return $this->handlePush($request, $response, $options);
+        });
+
+        ($request->hasHeader('content-length') ? new Success((int) $request->getHeader('content-length')) : $request->getBody()->getBodyLength())
+            ->onResolve(static function ($e, $bodySize) use (&$info) {
+                if (null !== $bodySize && 0 <= $bodySize) {
+                    $info['upload_content_length'] = ((1 + $info['upload_content_length']) ?? 1) - 1 + $bodySize;
+                }
+            });
+
+        [$client, $connector] = $this->getClient($options);
+        $response = $client->request($request, $cancellation);
+        $response->onResolve(static function ($e) use ($connector, &$handle) {
+            if (null === $e) {
+                $handle = $connector->handle;
+            }
+        });
+
+        return $response;
+    }
+
+    private function getClient(array $options): array
+    {
+        $options = [
+            'bindto' => $options['bindto'] ?: '0',
+            'verify_peer' => $options['verify_peer'],
+            'capath' => $options['capath'],
+            'cafile' => $options['cafile'],
+            'local_cert' => $options['local_cert'],
+            'local_pk' => $options['local_pk'],
+            'ciphers' => $options['ciphers'],
+            'capture_peer_cert_chain' => $options['capture_peer_cert_chain'] || $options['peer_fingerprint'],
+            'proxy' => $options['proxy'],
+        ];
+
+        $key = md5(serialize($options));
+
+        if (isset($this->clients[$key])) {
+            return $this->clients[$key];
+        }
+
+        $context = new ClientTlsContext('');
+        $options['verify_peer'] || $context = $context->withoutPeerVerification();
+        $options['cafile'] && $context = $context->withCaFile($options['cafile']);
+        $options['capath'] && $context = $context->withCaPath($options['capath']);
+        $options['local_cert'] && $context = $context->withCertificate(new Certificate($options['local_cert'], $options['local_pk']));
+        $options['ciphers'] && $context = $context->withCiphers($options['ciphers']);
+        $options['capture_peer_cert_chain'] && $context = $context->withPeerCapturing();
+
+        $connector = $handleConnector = new class() implements Connector {
+            public $connector;
+            public $uri;
+            public $handle;
+
+            public function connect(string $uri, ?ConnectContext $context = null, ?CancellationToken $token = null): Promise
+            {
+                $result = $this->connector->connect($this->uri ?? $uri, $context, $token);
+                $result->onResolve(function ($e, $socket) {
+                    $this->handle = null !== $socket ? $socket->getResource() : false;
+                });
+
+                return $result;
+            }
+        };
+        $connector->connector = new DnsConnector(new AmpResolver($this->dnsCache));
+
+        $context = (new ConnectContext())
+            ->withTcpNoDelay()
+            ->withTlsContext($context);
+
+        if ($options['bindto']) {
+            if (file_exists($options['bindto'])) {
+                $connector->uri = 'unix://'.$options['bindto'];
+            } else {
+                $context = $context->withBindTo($options['bindto']);
+            }
+        }
+
+        if ($options['proxy']) {
+            $proxyUrl = parse_url($options['proxy']['url']);
+            $proxySocket = new SocketAddress($proxyUrl['host'], $proxyUrl['port']);
+            $proxyHeaders = $options['proxy']['auth'] ? ['Proxy-Authorization' => $options['proxy']['auth']] : [];
+
+            if ('ssl' === $proxyUrl['scheme']) {
+                $connector = new Https1TunnelConnector($proxySocket, $context->getTlsContext(), $proxyHeaders, $connector);
+            } else {
+                $connector = new Http1TunnelConnector($proxySocket, $proxyHeaders, $connector);
+            }
+        }
+
+        $maxHostConnections = 0 < $this->maxHostConnections ? $this->maxHostConnections : \PHP_INT_MAX;
+        $pool = new DefaultConnectionFactory($connector, $context);
+        $pool = ConnectionLimitingPool::byAuthority($maxHostConnections, $pool);
+
+        return $this->clients[$key] = [($this->clientConfigurator)(new PooledHttpClient($pool)), $handleConnector];
+    }
+
+    private function handlePush(Request $request, Promise $response, array $options): Promise
+    {
+        $deferred = new Deferred();
+        $authority = $request->getUri()->getAuthority();
+
+        if ($this->maxPendingPushes <= \count($this->pushedResponses[$authority] ?? [])) {
+            $fifoUrl = key($this->pushedResponses[$authority]);
+            unset($this->pushedResponses[$authority][$fifoUrl]);
+            $this->logger && $this->logger->debug(sprintf('Evicting oldest pushed response: "%s"', $fifoUrl));
+        }
+
+        $url = (string) $request->getUri();
+        $this->logger && $this->logger->debug(sprintf('Queueing pushed response: "%s"', $url));
+        $this->pushedResponses[$authority][] = [$url, $deferred, $request, $response, [
+            'proxy' => $options['proxy'],
+            'bindto' => $options['bindto'],
+            'local_cert' => $options['local_cert'],
+            'local_pk' => $options['local_pk'],
+        ]];
+
+        return $deferred->promise();
+    }
+}