diff --git a/src/CoreMiddleware.php b/src/CoreMiddleware.php
index e2a4538..4cd6beb 100644
--- a/src/CoreMiddleware.php
+++ b/src/CoreMiddleware.php
@@ -9,14 +9,16 @@ declare(strict_types=1);
  * @contact  group@hyperf.io
  * @license  https://github.com/hyperf/hyperf/blob/master/LICENSE
  */
-namespace Hyperf\MqttServer;
+namespace Zyimm\MqttServer;
 
 use Hyperf\Context\Context;
 use Hyperf\Di\Annotation\AnnotationCollector;
 use Hyperf\HttpMessage\Base\Response;
 use Hyperf\HttpServer\Contract\CoreMiddlewareInterface;
 use Laminas\Stdlib\SplPriorityQueue;
+use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\ContainerInterface;
+use Psr\Container\NotFoundExceptionInterface;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\RequestHandlerInterface;
@@ -31,12 +33,12 @@ class CoreMiddleware implements CoreMiddlewareInterface
     /**
      * @var ContainerInterface
      */
-    protected $container;
+    protected ContainerInterface $container;
 
     /**
      * @var string
      */
-    protected $serverName;
+    protected string $serverName;
 
     public function __construct(ContainerInterface $container, string $serverName)
     {
@@ -49,6 +51,15 @@ class CoreMiddleware implements CoreMiddlewareInterface
         return $request;
     }
 
+    /**
+     * process
+     *
+     * @param  ServerRequestInterface  $request
+     * @param  RequestHandlerInterface  $handler
+     * @return ResponseInterface
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
+     */
     public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
     {
         $type = $request->getAttribute(Types::class);