diff --git a/Server.php b/Server.php
index feba72a..b30273d 100644
--- a/Server.php
+++ b/Server.php
@@ -137,8 +137,9 @@ class Server extends HttpService
 
 	/**
 	 * @return \Swoole\Http\Server|\Swoole\Server|\Swoole\WebSocket\Server|null
+	 * @throws \ReflectionException
 	 */
-	#[Pure] public function getServer(): \Swoole\Http\Server|\Swoole\Server|\Swoole\WebSocket\Server|null
+	public function getServer(): \Swoole\Http\Server|\Swoole\Server|\Swoole\WebSocket\Server|null
 	{
 		return $this->manager->getServer();
 	}
diff --git a/ServerCommand.php b/ServerCommand.php
index ad28960..f87b4eb 100644
--- a/ServerCommand.php
+++ b/ServerCommand.php
@@ -4,12 +4,13 @@ declare(strict_types=1);
 namespace Server;
 
 
+use Note\Inject;
 use Exception;
 use Kiri\Abstracts\Config;
 use Kiri\Events\EventDispatch;
 use Kiri\Exception\ConfigException;
 use Kiri\Kiri;
-use Note\Inject;
+use Server\Events\OnServerBeforeStart;
 use Swoole\Coroutine;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputArgument;
@@ -63,12 +64,12 @@ class ServerCommand extends Command
 		if (!in_array($input->getArgument('action'), self::ACTIONS)) {
 			throw new Exception('I don\'t know what I want to do.');
 		}
-		$action = $input->getArgument('action');
-		if ($action == 'stop' || $action == 'restart') {
-			$manager->shutdown();
-			if ($action == 'stop') {
-				return 0;
-			}
+		if ($manager->isRunner() && $input->getArgument('action') == 'start') {
+			throw new Exception('Service is running. Please use restart.');
+		}
+		$manager->shutdown();
+		if ($input->getArgument('action') == 'stop') {
+			return 0;
 		}
 		return $this->generate_runtime_builder($manager);
 	}
@@ -86,7 +87,7 @@ class ServerCommand extends Command
 		Coroutine::set([
 			'hook_flags'            => SWOOLE_HOOK_ALL ^ SWOOLE_HOOK_BLOCKING_FUNCTION,
 			'enable_deadlock_check' => FALSE,
-			'exit_condition'        => static function () {
+			'exit_condition'        => function () {
 				return Coroutine::stats()['coroutine_num'] === 0;
 			}
 		]);