diff --git a/wshandler/wshandler.go b/wshandler/wshandler.go
index 18d1cf0..01f8713 100644
--- a/wshandler/wshandler.go
+++ b/wshandler/wshandler.go
@@ -528,6 +528,7 @@ func (ws *WebsocketHandler) upgrade(w http.ResponseWriter, r *http.Request) {
 	}()
 
 	sk := r.Header.Get("AS-X-SESSION")
+	logger.Println("WebsocketHandler.upgrade sk :", sk)
 	authinfo, err := ws.sessionConsumer.Query(sk)
 	if err != nil {
 		w.WriteHeader(http.StatusInternalServerError)