minor #32948 [HttpClient] Minor fixes (fancyweb)

This PR was merged into the 4.3 branch.

Discussion
----------

[HttpClient] Minor fixes

| Q             | A
| ------------- | ---
| Branch?       | 4.3
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

356341bc19 [HttpClient] Minor fixes

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php

@@ -1481,7 +1481,7 @@ class Configuration implements ConfigurationInterface
                                         ->info('A comma separated list of hosts that do not require a proxy to be reached.')
                                     ->end()
                                     ->floatNode('timeout')
-                                        ->info('Defaults to "default_socket_timeout" ini parameter.')
+                                        ->info('The idle timeout, defaults to the "default_socket_timeout" ini parameter.')
                                     ->end()
                                     ->scalarNode('bindto')
                                         ->info('A network interface name, IP address, a host name or a UNIX socket to bind to.')

src/Symfony/Component/HttpClient/Response/MockResponse.php

@@ -37,7 +37,7 @@ class MockResponse implements ResponseInterface
 
     /**
      * @param string|string[]|iterable $body The response body as a string or an iterable of strings,
-     *                                       yielding an empty string simulates a timeout,
+     *                                       yielding an empty string simulates an idle timeout,
      *                                       exceptions are turned to TransportException
      *
      * @see ResponseInterface::getInfo() for possible info, e.g. "response_headers"
@@ -277,7 +277,7 @@ class MockResponse implements ResponseInterface
         if (!\is_string($body)) {
             foreach ($body as $chunk) {
                 if ('' === $chunk = (string) $chunk) {
-                    // simulate a timeout
+                    // simulate an idle timeout
                     $response->body[] = new ErrorChunk($offset);
                 } else {
                     $response->body[] = $chunk;

src/Symfony/Contracts/HttpClient/Test/HttpClientTestCase.php

@@ -580,7 +580,7 @@ abstract class HttpClientTestCase extends TestCase
 
         $response = null;
         $this->expectException(TransportExceptionInterface::class);
-        $client->request('GET', 'http://symfony.com:8057/', ['timeout' => 3]);
+        $client->request('GET', 'http://symfony.com:8057/', ['timeout' => 1]);
     }
 
     public function testTimeoutOnAccess()
@@ -643,7 +643,6 @@ abstract class HttpClientTestCase extends TestCase
     {
         $client = $this->getHttpClient(__FUNCTION__);
 
-        $downloaded = 0;
         $start = microtime(true);
         $client->request('GET', 'http://localhost:8057/timeout-long');
         $client = null;