diff --git a/test.html b/test.html
index b9da0ab..cc11a5d 100644
--- a/test.html
+++ b/test.html
@@ -18,6 +18,7 @@
                 console.log("connection closed");
             };
             function refresh() {
+                console.log("send data");
                 ws.send("next");
             }
             $(document).ready(refresh())