IDN conversion fails with domains containing multiple hyphens

[Rudloff]

Guzzle version(s) affected: 6.5.3
PHP version: 7.3.14
cURL version: 7.64.0

Description
With some domains containing multiple hyphens, IDN conversion fails with this error:

PHP Fatal error:  Uncaught GuzzleHttp\Exception\InvalidArgumentException: IDN conversion failed (errors: IDNA_ERROR_HYPHEN_3_4) in /home/pierre/www/alltube/vendor/guzzlehttp/guzzle/src/Utils.php:56

How to reproduce

<?php

use GuzzleHttp\Client;

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

$client = new Client();
$client->get('https://r3---sn-25glene6.example.com/');

Possible Solution
The workaround I am using:

$client = new Client(['idn_conversion' => false]);

[GrahamCampbell]

I think #2626 should fix your problem. Can you confirm please?

[Rudloff]

I am using symfony/polyfill-intl-idn 1.17.0.

6606165 does indeed fix the issue.

[GrahamCampbell]

Great, thanks for confirming.

[Nyholm]

Thank you.

#2626 has been merged.