http client psr 18 example not working

[LPodolski]

https://github.com/symfony/symfony-docs/blob/4.3/components/http_client.rst#psr-18

on full symfony project from symfony new --full project_name and after installing requirements

        $psr17Factory = new Psr17Factory();
        $psr18Client = new Psr18Client();

        $url = 'https://symfony.com/versions.json';
        $request = $psr17Factory->createRequest('GET', $url);
        $response = $psr18Client->sendRequest($request);

//        $response->getBody()->rewind(); // <--------------------- this line changed

        $content = json_decode($response->getBody()->getContents(), true);




        return new Response(\print_r($content, true));

does not work, returns empty content

if I uncomment line (added by me, not present in docs):

        $response->getBody()->rewind(); // <--------------------- this line changed

it also works

and If i switch http driver to guzzle it also works:

<?php

declare(strict_types=1);

namespace App\Controller;

use Http\Adapter\Guzzle6\Client;
use Http\Factory\Guzzle\RequestFactory;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class TestController extends AbstractController
{
    /**
     * @Route("/test", name="app_test")
     */
    public function index(): Response
    {
        $psr17Factory = new RequestFactory();
        $psr18Client = Client::createWithConfig([]);

        $url = 'https://symfony.com/versions.json';
        $request = $psr17Factory->createRequest('GET', $url);
        $response = $psr18Client->sendRequest($request);

        $content = json_decode($response->getBody()->getContents(), true);




        return new Response(\print_r($content, true));
    }
}

so it is problem with symfony's http client,
most likely there is some issue with rewind of stream before returning contents

[nicolas-grekas]

This will be fixed at the code level once symfony/symfony#32689 is tagged (in one week max)
Meanwhile, you can use __toString instead of getContents.
Thanks for the report.