diff --git a/src/Server/Manager.php b/src/Server/Manager.php
index 567d3b01..89ef05be 100644
--- a/src/Server/Manager.php
+++ b/src/Server/Manager.php
@@ -256,11 +256,15 @@ public function onTask(HttpServer $server, $taskId, $fromId, $data)
     {
         $this->container['events']->fire('swoole.task', func_get_args());
 
-        // push websocket message
-        if ($this->isWebsocket
-            && array_key_exists('action', $data)
-            && $data['action'] === Websocket::PUSH_ACTION) {
-            $this->pushMessage($server, $data['data'] ?? []);
+        try {
+            // push websocket message
+            if ($this->isWebsocket
+                && array_key_exists('action', $data)
+                && $data['action'] === Websocket::PUSH_ACTION) {
+                $this->pushMessage($server, $data['data'] ?? []);
+            }
+        } catch (Exception $e) {
+            $this->logServerError($e);
         }
     }
 
diff --git a/src/Websocket/CanWebsocket.php b/src/Websocket/CanWebsocket.php
index f68caa3d..a6308cac 100644
--- a/src/Websocket/CanWebsocket.php
+++ b/src/Websocket/CanWebsocket.php
@@ -119,7 +119,7 @@ public function pushMessage(Server $server, array $data)
         $message = $this->formatter->output($event, $data['message']);
 
         // attach sender if not broadcast
-        if (! $broadcast && ! in_array($sender, $fds)) {
+        if (! $broadcast && $sender && ! in_array($sender, $fds)) {
             $fds[] = $sender;
         }
 
@@ -132,8 +132,9 @@ public function pushMessage(Server $server, array $data)
             }
         }
 
+        // push message to designated fds
         foreach ($fds as $fd) {
-            if ($broadcast && $sender === (integer) $fd) {
+            if (($broadcast && $sender === (integer) $fd) || ! $server->exist($fd)) {
                 continue;
             }
             $server->push($fd, $message, $opcode);
diff --git a/src/Websocket/Rooms/TableRoom.php b/src/Websocket/Rooms/TableRoom.php
index e93ccacf..5327ab89 100644
--- a/src/Websocket/Rooms/TableRoom.php
+++ b/src/Websocket/Rooms/TableRoom.php
@@ -34,8 +34,7 @@ public function addAll(int $fd, array $roomNames)
         $rooms = $this->getRooms($fd);
 
         foreach ($roomNames as $room) {
-            $room = $this->encode($room);
-            $sids = $this->getClients($room, false);
+            $sids = $this->getClients($room);
 
             if (in_array($fd, $sids)) {
                 continue;
@@ -58,11 +57,11 @@ public function delete(int $fd, string $room)
     public function deleteAll(int $fd, array $roomNames = [])
     {
         $allRooms = $this->getRooms($fd);
-        $rooms = count($roomNames) ? $this->encode($roomNames) : $allRooms;
+        $rooms = count($roomNames) ? $roomNames : $allRooms;
 
         $removeRooms = [];
         foreach ($rooms as $room) {
-            $sids = $this->getClients($room, false);
+            $sids = $this->getClients($room);
 
             if (! in_array($fd, $sids)) {
                 continue;
@@ -75,12 +74,8 @@ public function deleteAll(int $fd, array $roomNames = [])
         $this->setRooms($fd, array_values(array_diff($allRooms, $removeRooms)), 'sids');
     }
 
-    public function getClients(string $room, $hash = true)
+    public function getClients(string $room)
     {
-        if ($hash) {
-            $room = $this->encode($room);
-        }
-
         return $this->getValue($room, 'rooms');
     }
 
@@ -113,17 +108,6 @@ protected function initSidsTable()
         $this->sids->create();
     }
 
-    protected function encode($keys)
-    {
-        if (is_array($keys)) {
-            return array_map(function ($key) {
-                return md5($key);
-            }, $keys);
-        }
-
-        return md5($keys);
-    }
-
     public function setValue($key, array $value, string $table)
     {
         $this->checkTable($table);
diff --git a/src/Websocket/Websocket.php b/src/Websocket/Websocket.php
index ffedd86a..f740ffed 100644
--- a/src/Websocket/Websocket.php
+++ b/src/Websocket/Websocket.php
@@ -99,11 +99,6 @@ public function leaveAll(array $rooms = [])
         return $this;
     }
 
-    public function on(string $event, callable $callback)
-    {
-        //
-    }
-
     public function emit(string $event, $data)
     {
         app('swoole.server')->task([
@@ -117,7 +112,7 @@ public function emit(string $event, $data)
             ]
         ]);
 
-        $this->cleanData();
+        $this->reset();
     }
 
     public function in(string $room)
@@ -163,7 +158,7 @@ protected function getFds()
         return array_values($fds);
     }
 
-    protected function cleanData()
+    protected function reset()
     {
         $this->isBroadcast = false;
         $this->sender = null;
diff --git a/tests/Websocket/TableRoomTest.php b/tests/Websocket/TableRoomTest.php
index 62b257ef..5f99a3d1 100644
--- a/tests/Websocket/TableRoomTest.php
+++ b/tests/Websocket/TableRoomTest.php
@@ -56,17 +56,17 @@ public function testAddAll()
     {
         $this->tableRoom->addAll($key = 1, $values = ['foo', 'bar']);
 
-        $this->assertSame($this->encode($values), $this->tableRoom->getValue($key, $table = 'sids'));
-        $this->assertSame([$key], $this->tableRoom->getValue($this->encode('foo'), 'rooms'));
-        $this->assertSame([$key], $this->tableRoom->getValue($this->encode('bar'), 'rooms'));
+        $this->assertSame($values, $this->tableRoom->getValue($key, $table = 'sids'));
+        $this->assertSame([$key], $this->tableRoom->getValue('foo', 'rooms'));
+        $this->assertSame([$key], $this->tableRoom->getValue('bar', 'rooms'));
     }
 
     public function testAdd()
     {
         $this->tableRoom->add($key = 1, $value = 'foo');
 
-        $this->assertSame([$this->encode($value)], $this->tableRoom->getValue($key, $table = 'sids'));
-        $this->assertSame([$key], $this->tableRoom->getValue($this->encode($value), 'rooms'));
+        $this->assertSame([$value], $this->tableRoom->getValue($key, $table = 'sids'));
+        $this->assertSame([$key], $this->tableRoom->getValue($value, 'rooms'));
     }
 
     public function testDeleteAll()
@@ -75,8 +75,8 @@ public function testDeleteAll()
         $this->tableRoom->deleteAll($key);
 
         $this->assertSame([], $this->tableRoom->getValue($key, $table = 'sids'));
-        $this->assertSame([], $this->tableRoom->getValue($this->encode('foo'), 'rooms'));
-        $this->assertSame([], $this->tableRoom->getValue($this->encode('bar'), 'rooms'));
+        $this->assertSame([], $this->tableRoom->getValue('foo', 'rooms'));
+        $this->assertSame([], $this->tableRoom->getValue('bar', 'rooms'));
     }
 
     public function testDelete()
@@ -84,9 +84,9 @@ public function testDelete()
         $this->tableRoom->addAll($key = 1, $values = ['foo', 'bar']);
         $this->tableRoom->delete($key, 'foo');
 
-        $this->assertSame([$this->encode('bar')], $this->tableRoom->getValue($key, $table = 'sids'));
-        $this->assertSame([], $this->tableRoom->getValue($this->encode('foo'), 'rooms'));
-        $this->assertSame([$key], $this->tableRoom->getValue($this->encode('bar'), 'rooms'));
+        $this->assertSame(['bar'], $this->tableRoom->getValue($key, $table = 'sids'));
+        $this->assertSame([], $this->tableRoom->getValue('foo', 'rooms'));
+        $this->assertSame([$key], $this->tableRoom->getValue('bar', 'rooms'));
     }
 
     public function testGetRooms()
@@ -106,17 +106,8 @@ public function testGetClients()
         $this->tableRoom->add($keys[1], $room);
 
         $this->assertSame(
-            $this->tableRoom->getValue($this->encode($room), $table = 'rooms'),
+            $this->tableRoom->getValue($room, $table = 'rooms'),
             $this->tableRoom->getClients($room)
         );
     }
-
-    protected function encode($keys)
-    {
-        $reflection = new \ReflectionClass($this->tableRoom);
-        $method = $reflection->getMethod('encode');
-        $method->setAccessible(true);
-
-        return $method->invokeArgs($this->tableRoom, [$keys]);
-    }
 }
diff --git a/tests/Websocket/WebsocketTest.php b/tests/Websocket/WebsocketTest.php
index 893ef193..d549ea95 100644
--- a/tests/Websocket/WebsocketTest.php
+++ b/tests/Websocket/WebsocketTest.php
@@ -9,11 +9,6 @@
 
 class WebsocketTest extends TestCase
 {
-    public function setUp()
-    {
-        //
-    }
-
     public function testSetBroadcast()
     {
         $websocket = $this->getWebsocket();