The Guzzle 7 BodyRewinderMiddleware allows to rewind a body which would have been read and not rewinded by previous middlewares.

BodyRewinderMiddleware.php

<?php

declare(strict_types=1);

namespace App\GuzzleMiddleware;

use GuzzleHttp\Promise\PromiseInterface;
use GuzzleHttp\Psr7\Message;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;

/**
 * Usage:
 * $stack = HandlerStack::create();
 * $stack->push(BodyRewinderMiddleware::bind(), 'bodyrewinder');
 * Push the rest of your middlewares...
 */
final class BodyRewinderMiddleware
{
    /**
     * @var callable(RequestInterface, array<mixed>): PromiseInterface
     */
    private $handler;

    /**
     * @param callable(RequestInterface, array<mixed>): PromiseInterface $handler
     */
    public function __construct(callable $handler)
    {
        $this->handler = $handler;
    }

    public static function bind(): callable
    {
        return static function (callable $handler): self {
            return new self($handler);
        };
    }

    /**
     * @param array<mixed> $options
     */
    public function __invoke(RequestInterface $request, array $options): PromiseInterface
    {
        $handler = $this->handler;

        Message::rewindBody($request);

        return $handler($request, $options)->then(static function (ResponseInterface $response): ResponseInterface {
            Message::rewindBody($response);

            return $response;
        });
    }
}