Merge branch '4.3' into 4.4

* 4.3:
  [HttpClient] workaround curl_multi_select() issue
  [CI] fix building local packages
  Increase limits for flakey appveyor tests

Author: nicolas-grekas

.appveyor.yml

@@ -47,6 +47,8 @@ install:
     - php composer.phar self-update
     - copy /Y .github\composer-config.json %APPDATA%\Composer\config.json
     - php composer.phar global require --no-progress --no-scripts --no-plugins symfony/flex dev-master
+    - git config --global user.email ""
+    - git config --global user.name "Symfony"
     - php .github/build-packages.php "HEAD^" src\Symfony\Bridge\PhpUnit src\Symfony\Contracts
     - IF %APPVEYOR_REPO_BRANCH%==master (SET COMPOSER_ROOT_VERSION=dev-master) ELSE (SET COMPOSER_ROOT_VERSION=%APPVEYOR_REPO_BRANCH%.x-dev)
     - php composer.phar update --no-progress --no-suggest --ansi

.github/build-packages.php

@@ -47,7 +47,7 @@
     if (isset($preferredInstall[$package->name]) && 'source' === $preferredInstall[$package->name]) {
         passthru("cd $dir && tar -cf package.tar --exclude='package.tar' *");
     } else {
-        passthru("cd $dir && git init && git add . && git commit --author \"Symfony <>\" -m - && git archive -o package.tar HEAD && rm .git/ -Rf");
+        passthru("cd $dir && git init && git add . && git commit -q -m - && git archive -o package.tar HEAD && rm .git/ -Rf");
     }
 
     if (!isset($package->extra->{'branch-alias'}->{'dev-master'})) {

.travis.yml

@@ -202,6 +202,9 @@ install:
 
     - |
       # Create local composer packages for each patched components and reference them in composer.json files when cross-testing components
+      git config --global user.email ""
+      git config --global user.name "Symfony"
+
       if [[ ! $deps ]]; then
           php .github/build-packages.php HEAD^ src/Symfony/Bridge/PhpUnit src/Symfony/Contracts
       else

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

@@ -286,6 +286,11 @@ private static function perform(CurlClientState $multi, array &$responses = null
      */
     private static function select(CurlClientState $multi, float $timeout): int
     {
+        if (\PHP_VERSION_ID < 70123 || (70200 <= \PHP_VERSION_ID && \PHP_VERSION_ID < 70211)) {
+            // workaround https://bugs.php.net/76480
+            $timeout = min($timeout, 0.01);
+        }
+
         return curl_multi_select($multi->handle, $timeout);
     }
 

src/Symfony/Component/VarDumper/Tests/Server/ConnectionTest.php

@@ -72,7 +72,7 @@ public function testNoServer()
         $connection = new Connection(self::VAR_DUMPER_SERVER);
         $start = microtime(true);
         $this->assertFalse($connection->write($data));
-        $this->assertLessThan(1, microtime(true) - $start);
+        $this->assertLessThan(4, microtime(true) - $start);
     }
 
     private function getServerProcess(): Process

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

@@ -597,9 +597,9 @@ public function testNotATimeout()
     {
         $client = $this->getHttpClient(__FUNCTION__);
         $response = $client->request('GET', 'http://localhost:8057/timeout-header', [
-            'timeout' => 0.5,
+            'timeout' => 0.9,
         ]);
-        usleep(510000);
+        sleep(1);
         $this->assertSame(200, $response->getStatusCode());
     }
 
@@ -669,7 +669,7 @@ public function testDestruct()
         $duration = microtime(true) - $start;
 
         $this->assertGreaterThan(1, $duration);
-        $this->assertLessThan(3, $duration);
+        $this->assertLessThan(4, $duration);
     }
 
     public function testProxy()