diff --git a/src/Router/Dispatcher.php b/src/Router/Dispatcher.php
index 61e68565..b54ba70a 100644
--- a/src/Router/Dispatcher.php
+++ b/src/Router/Dispatcher.php
@@ -41,7 +41,7 @@ public function handshake(Request $request, Response $response): array
             if ($e instanceof WsRouteException) {
                 return [
                     HandlerInterface::HANDSHAKE_FAIL,
-                    $response->withStatus(404)->withAddedHeader('Failed-Reason', 'Route not found')
+                    $response->withStatus(404)->withAddedHeader('Failure-Reason', 'Route not found')
                 ];
             }
 
@@ -105,10 +105,8 @@ public function message(Server $server, Frame $frame)
             $handler = \bean($className);
             $handler->onMessage($server, $frame);
         } catch (\Throwable $e) {
-            /** @var \Swoft\Event\EventManager $em */
-            $em = App::getBean('eventManager');
-
-            if ($em->hasListenerQueue(WsEvent::ON_ERROR)) {
+            /** @see \Swoft\Event\EventManager::hasListenerQueue() */
+            if (App::hasBean('eventManager') && \bean('eventManager')->hasListenerQueue(WsEvent::ON_ERROR)) {
                 App::trigger(WsEvent::ON_ERROR, $frame, $e);
             } else {
                 App::error($e->getMessage(), ['fd' => $fd, 'data' => $frame->data]);
diff --git a/src/WebSocketContext.php b/src/WebSocketContext.php
index 28a79c96..de7f5e6c 100644
--- a/src/WebSocketContext.php
+++ b/src/WebSocketContext.php
@@ -262,7 +262,7 @@ public static function getFdByCoId()
      * @param int|null $cid
      * @return bool
      */
-    public static function delFdToCoId(int $cid = null): bool
+    public static function delFdByCoId(int $cid = null): bool
     {
         $cid = $cid > -1 ? $cid : self::getCoroutineId();
 
diff --git a/src/WebSocketEventTrait.php b/src/WebSocketEventTrait.php
index 9d2ca8b3..35fe8be7 100644
--- a/src/WebSocketEventTrait.php
+++ b/src/WebSocketEventTrait.php
@@ -101,7 +101,7 @@ public function onHandShake(Request $request, Response $response): bool
         });
 
         // delete coId to fd mapping
-        WebSocketContext::delFdToCoId();
+        WebSocketContext::delFdByCoId();
 
         return true;
     }
@@ -168,7 +168,7 @@ public function onMessage(Server $server, Frame $frame)
         \bean('wsDispatcher')->message($server, $frame);
 
         // delete coId to fd mapping
-        WebSocketContext::delFdToCoId();
+        WebSocketContext::delFdByCoId();
     }
 
     /**
diff --git a/src/WebSocketServer.php b/src/WebSocketServer.php
index 96e2fbc2..d9ef4548 100644
--- a/src/WebSocketServer.php
+++ b/src/WebSocketServer.php
@@ -176,7 +176,7 @@ public function sendTo(int $receiver, string $data, int $sender = 0): int
     }
 
     /**
-     * broadcast message, will exclude self.
+     * broadcast message, will exclude sender.
      * @param string $data 消息数据
      * @param int $sender 发送者
      * @param int[] $receivers 指定接收者们
@@ -194,15 +194,16 @@ public function broadcast(string $data, array $receivers = [], array $excluded =
             return $this->sendTo((int)\array_shift($receivers), $data, $sender);
         }
 
+        // excepted itself
+        if ($sender) {
+            $excluded[] = $sender;
+        }
+
         // to all
         if (!$excluded && !$receivers) {
             return $this->sendToAll($data, $sender);
         }
 
-        if ($sender) {
-            $excluded[] = $sender;
-        }
-
         // to some
         return $this->sendToSome($data, $receivers, $excluded, $sender);
     }