message: Fix the nghttp2 test
diff: @@ -9,22 +9,22 @@ skip_if_offline();
  require __DIR__ . '/../include/bootstrap.php';
  Co::set(['log_level' => SWOOLE_LOG_WARNING]);
  go(function () {
  - $domain = 'nghttp2.org';
  - $cli = new Swoole\Coroutine\Http2\Client($domain, 443, true);
  - $cli->set([
  - 'timeout' => 5,
  - 'ssl_host_name' => $domain
  - ]);
  + $cli = new Swoole\Coroutine\Http2\Client('nghttp2.org', 443, true);
  + $cli->set(['timeout' => 5,]);
  if (!$cli->connect()) {
  - exit; // we can't connect to this website without proxy in China so we skip it.
  + return; // we can't connect to this website without proxy in China so we skip it.
  }
  $ret = $cli->ping();
  Assert::assert($ret);
  Co::sleep(0.5);
  Assert::greaterThan($cli->send(new Swoole\Http2\Request), 0);
  + /** @var $response Swoole\Http2\Response */
  $response = $cli->recv();
  if (!$response && $cli->errCode === SOCKET_ETIMEDOUT) {
  - exit;
  + return;
  + }
  + if ($response && ((string) $response->statusCode)[0] === '5') {
  + return;
  }
  Assert::contains($response->data, 'nghttp2');
  });
  