diff --git a/cmd/testapi/main.go b/cmd/testapi/main.go
index 3bb5cc7..a7f89c0 100644
--- a/cmd/testapi/main.go
+++ b/cmd/testapi/main.go
@@ -65,7 +65,7 @@ type S struct {
 
 func (s *S) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if err := s.serveHTTP(w, r); err != nil {
-		log.Println(r.URL.Path, "//", err.Error(), r.Header)
+		log.Println(r.URL.Path, "//", err.Error())
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 	}
 }
@@ -124,20 +124,46 @@ func (s *S) injectContext(w http.ResponseWriter, r *http.Request) error {
 	return nil
 }
 
-func (s *S) serveWS(httpw http.ResponseWriter, httpr *http.Request) error {
-	ctx := httpr.Context()
+func (s *S) serveWS(w http.ResponseWriter, r *http.Request) error {
+	ctx := r.Context()
 
-	c, err := websocket.Accept(httpw, httpr, nil)
+	c, err := websocket.Accept(w, r, nil)
 	if err != nil {
 		return err
 	}
 	defer c.CloseNow()
 
-	if err := c.Write(ctx, 1, []byte("hello world")); err != nil {
-		return err
+	for {
+		select {
+		case <-ctx.Done():
+			return nil
+		case <-time.After(time.Second):
+			switch r.URL.Path {
+			case "/ws/page/a":
+				if err := c.Write(ctx, 1, []byte(`{"page":"a", "items": [{"name":"x"}, {"name":"y"}]}`)); err != nil {
+					return err
+				}
+			case "/ws/page/a/event/a":
+				if err := c.Write(ctx, 1, []byte(`{"page":"a", "event":"a", "items": [{"name":"x"}, {"name":"y"}]}`)); err != nil {
+					return err
+				}
+			case "/ws/page/b/event/a":
+				if err := c.Write(ctx, 1, []byte(`{"page":"b", "event":"a", "items": [{"name":"x", "title":"x1", "tags":[{"k":"k", "v":"v"}, {"k":"K", "v":"V"}, {"k":"kkk","v":"vvv"}]}, {"name":"y", "tags":[{"k":"k", "v":"v"}, {"k":"K", "v":"V"}, {"k":"kkk","v":"vvv"}]}], "help": "hello world"}`)); err != nil {
+					return err
+				}
+			case "/ws/page/b/event/b":
+				if err := c.Write(ctx, 1, []byte(`{"page":"b", "event":"b", "items": [{"name":"x", "title":"x1", "tags":[{"k":"k", "v":"v"}, {"k":"K", "v":"V"}, {"k":"kkk","v":"vvv"}]}, {"name":"y", "tags":[{"k":"k", "v":"v"}, {"k":"K", "v":"V"}, {"k":"kkk","v":"vvv"}]}], "help": "hello world"}`)); err != nil {
+					return err
+				}
+			default:
+				if err := c.Write(ctx, 1, []byte(`hello world`)); err != nil {
+					return err
+				}
+			}
+		}
 	}
 
-	return fmt.Errorf("not impl")
+	return nil
 }
 
 func (s *S) serveV1(w http.ResponseWriter, r *http.Request) error {