Symfony version(s) affected

5.4.7

Description

In #45814 the HTTP-Client was changed to only set the content-length via the CURLOPT_INFILE option. However, that option is not used for CURLOPT_READFUNCTION. For that we would need CURLOPT_POSTFIELDSIZE which is not exposed in PHP (see php/php-src#8165).

As a result, when using a callback for the request's body, we cannot set the Content-Length header anymore.

In combination with resetting the Transfer-Encoding header to get curl to not send a chunked request, we cannot send a request with a body.

How to reproduce

<?php

use Symfony\Component\HttpClient\CurlHttpClient;

require_once __DIR__ . '/vendor/autoload.php';

$client = new CurlHttpClient([]);

$counter = 0;
$response = $client->request('POST', 'http://localhost:982/iserv/helloworld', [
    'headers' => ['Content-Length' => [10000], 'Transfer-Encoding' => [' ']],
    'body' => static function (int $length) use(&$counter){
        if ($counter++ > 0) {
            return "";
        }

        return str_repeat("A", 10000);
    },
]);

echo $response->getContent();

Possible Solution

No response

Additional Context

No response