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    <h3>Editing: HttpClientKernel.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpKernel;

use Symfony\Component\HttpClient\HttpClient;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\ResponseHeaderBag;
use Symfony\Component\Mime\Part\AbstractPart;
use Symfony\Component\Mime\Part\DataPart;
use Symfony\Component\Mime\Part\Multipart\FormDataPart;
use Symfony\Component\Mime\Part\TextPart;
use Symfony\Contracts\HttpClient\HttpClientInterface;

// Help opcache.preload discover always-needed symbols
class_exists(ResponseHeaderBag::class);

/**
 * An implementation of a Symfony HTTP kernel using a &quot;real&quot; HTTP client.
 *
 * @author Fabien Potencier &lt;fabien@symfony.com&gt;
 */
final class HttpClientKernel implements HttpKernelInterface
{
    private HttpClientInterface $client;

    public function __construct(HttpClientInterface $client = null)
    {
        if (null === $client &amp;&amp; !class_exists(HttpClient::class)) {
            throw new \LogicException(sprintf('You cannot use &quot;%s&quot; as the HttpClient component is not installed. Try running &quot;composer require symfony/http-client&quot;.', __CLASS__));
        }

        $this-&gt;client = $client ?? HttpClient::create();
    }

    public function handle(Request $request, int $type = HttpKernelInterface::MAIN_REQUEST, bool $catch = true): Response
    {
        $headers = $this-&gt;getHeaders($request);
        $body = '';
        if (null !== $part = $this-&gt;getBody($request)) {
            $headers = array_merge($headers, $part-&gt;getPreparedHeaders()-&gt;toArray());
            $body = $part-&gt;bodyToIterable();
        }
        $response = $this-&gt;client-&gt;request($request-&gt;getMethod(), $request-&gt;getUri(), [
            'headers' =&gt; $headers,
            'body' =&gt; $body,
        ] + $request-&gt;attributes-&gt;get('http_client_options', []));

        $response = new Response($response-&gt;getContent(!$catch), $response-&gt;getStatusCode(), $response-&gt;getHeaders(!$catch));

        $response-&gt;headers-&gt;remove('X-Body-File');
        $response-&gt;headers-&gt;remove('X-Body-Eval');
        $response-&gt;headers-&gt;remove('X-Content-Digest');

        $response-&gt;headers = new class($response-&gt;headers-&gt;all()) extends ResponseHeaderBag {
            protected function computeCacheControlValue(): string
            {
                return $this-&gt;getCacheControlHeader(); // preserve the original value
            }
        };

        return $response;
    }

    private function getBody(Request $request): ?AbstractPart
    {
        if (\in_array($request-&gt;getMethod(), ['GET', 'HEAD'])) {
            return null;
        }

        if (!class_exists(AbstractPart::class)) {
            throw new \LogicException('You cannot pass non-empty bodies as the Mime component is not installed. Try running &quot;composer require symfony/mime&quot;.');
        }

        if ($content = $request-&gt;getContent()) {
            return new TextPart($content, 'utf-8', 'plain', '8bit');
        }

        $fields = $request-&gt;request-&gt;all();
        foreach ($request-&gt;files-&gt;all() as $name =&gt; $file) {
            $fields[$name] = DataPart::fromPath($file-&gt;getPathname(), $file-&gt;getClientOriginalName(), $file-&gt;getClientMimeType());
        }

        return new FormDataPart($fields);
    }

    private function getHeaders(Request $request): array
    {
        $headers = [];
        foreach ($request-&gt;headers as $key =&gt; $value) {
            $headers[$key] = $value;
        }
        $cookies = [];
        foreach ($request-&gt;cookies-&gt;all() as $name =&gt; $value) {
            $cookies[] = $name.'='.$value;
        }
        if ($cookies) {
            $headers['cookie'] = implode('; ', $cookies);
        }

        return $headers;
    }
}
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