diff --git a/engine/view.py b/engine/view.py
index bc5a194..5522741 100644
--- a/engine/view.py
+++ b/engine/view.py
@@ -14,10 +14,10 @@ def get(self):
 
 class ApiHandler(tornado.websocket.WebSocketHandler):
     def open(self, *args, **kwargs):
-        pass
+        self.write('websocket is opened'.decode())
     
     def on_message(self, message):
-        pass 
+        self.write('websocket send message OK'.decode())
 
     def on_close(self):
         pass