game

websocket/src/main/java/com/lovecoding/websocket/GameController.java

@@ -74,7 +74,9 @@ public class GameController {
 
     public void sendUser( String msg, Session session ){
         try {
-            session.getBasicRemote().sendText(msg);
+            synchronized (session.getId()) {
+                session.getBasicRemote().sendText(msg);
+            }
         } catch (IOException e) {
             e.printStackTrace();
         }