diff --git a/src/Server/Manager.php b/src/Server/Manager.php
index b93e66c9..4258a707 100644
--- a/src/Server/Manager.php
+++ b/src/Server/Manager.php
@@ -5,6 +5,7 @@
 use Exception;
 use Throwable;
 use Swoole\Process;
+use Swoole\Server\Task;
 use Illuminate\Support\Str;
 use SwooleTW\Http\Helpers\OS;
 use SwooleTW\Http\Server\Sandbox;
@@ -256,13 +257,13 @@ protected function resetOnRequest()
      * Set onTask listener.
      *
      * @param mixed $server
-     * @param string|\Swoole\Server\Task $taskIdOrTask
-     * @param string $srcWorkerId                       Optional
-     * @param mixed $data                               Optional
+     * @param string|\Swoole\Server\Task $taskId or $task
+     * @param string $srcWorkerId
+     * @param mixed $data
      */
-    public function onTask($server, ...$args)
+    public function onTask($server, $taskId, $srcWorkerId, $data)
     {
-        $this->container->make('events')->dispatch('swoole.task', [$server, $args]);
+        $this->container->make('events')->dispatch('swoole.task', func_get_args());
 
         try {
             // push websocket message
diff --git a/src/Transformers/Response.php b/src/Transformers/Response.php
index 6c7e053a..416a26fa 100644
--- a/src/Transformers/Response.php
+++ b/src/Transformers/Response.php
@@ -10,6 +10,8 @@
 
 class Response
 {
+    const CHUNK_SIZE = 8192;
+
     /**
      * @var \Swoole\Http\Response
      */
@@ -46,7 +48,7 @@ public function __construct($illuminateResponse, SwooleResponse $swooleResponse)
     }
 
     /**
-     * Sends HTTP headers and content.
+     * Send HTTP headers and content.
      *
      * @throws \InvalidArgumentException
      */
@@ -57,7 +59,7 @@ public function send()
     }
 
     /**
-     * Sends HTTP headers.
+     * Send HTTP headers.
      *
      * @throws \InvalidArgumentException
      */
@@ -86,9 +88,11 @@ protected function sendHeaders()
         $this->swooleResponse->status($illuminateResponse->getStatusCode());
 
         // cookies
+        // $cookie->isRaw() is supported after symfony/http-foundation 3.1
+        // and Laravel 5.3, so we can add it back now
         foreach ($illuminateResponse->headers->getCookies() as $cookie) {
-            // may need to consider rawcookie
-            $this->swooleResponse->cookie(
+            $method = $cookie->isRaw() ? 'rawcookie' : 'cookie';
+            $this->swooleResponse->$method(
                 $cookie->getName(),
                 $cookie->getValue(),
                 $cookie->getExpiresTime(),
@@ -101,7 +105,7 @@ protected function sendHeaders()
     }
 
     /**
-     * Sends HTTP content.
+     * Send HTTP content.
      */
     protected function sendContent()
     {
@@ -124,10 +128,13 @@ protected function sendContent()
      */
     protected function sendInChunk($content)
     {
-        if ($content) {
-            foreach (str_split($content, 1024) as $v) {
-                $this->swooleResponse->write($v);
-            }
+        if (strlen($content) <= static::CHUNK_SIZE) {
+            $this->swooleResponse->end($content);
+            return;
+        }
+
+        foreach (str_split($content, static::CHUNK_SIZE) as $chunk) {
+            $this->swooleResponse->write($chunk);
         }
 
         $this->swooleResponse->end();