diff --git a/src/src/main/java/com/my/graphiteDigesterBg/diframe/connection/DiConWebsocketClient.java b/src/src/main/java/com/my/graphiteDigesterBg/diframe/connection/DiConWebsocketClient.java
index 818e32a..425cc25 100644
--- a/src/src/main/java/com/my/graphiteDigesterBg/diframe/connection/DiConWebsocketClient.java
+++ b/src/src/main/java/com/my/graphiteDigesterBg/diframe/connection/DiConWebsocketClient.java
@@ -35,6 +35,9 @@ public class DiConWebsocketClient extends WebSocketClient {
     @Override
     public void onOpen(ServerHandshake serverHandshake) {
         LOG.info("device connected ： {}", this.uri);
+        synchronized ( this ) {
+            this.notifyAll();
+        }
     }
 
     @Override