bug #34251 [HttpClient] expose only gzip when doing transparent compr…

…ession (nicolas-grekas)

This PR was merged into the 4.3 branch.

Discussion
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[HttpClient] expose only gzip when doing transparent compression

| Q             | A
| ------------- | ---
| Branch?       | 4.3
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Closes #34083
| License       | MIT
| Doc PR        | -

Commits
-------

6571ddd [HttpClient] expose only gzip when doing transparent compression

src/Symfony/Component/HttpClient/CurlHttpClient.php

@@ -210,8 +210,8 @@ public function request(string $method, string $url, array $options = []): Respo
             $curlopts[CURLOPT_NOSIGNAL] = true;
         }
 
-        if (!isset($options['normalized_headers']['accept-encoding'])) {
-            $curlopts[CURLOPT_ENCODING] = ''; // Enable HTTP compression
+        if (!isset($options['normalized_headers']['accept-encoding']) && CURL_VERSION_LIBZ & self::$curlVersion['features']) {
+            $curlopts[CURLOPT_ENCODING] = 'gzip'; // Expose only one encoding, some servers mess up when more are provided
         }
 
         foreach ($options['headers'] as $header) {