diff --git a/wshandler/wshandler_peer.go b/wshandler/wshandler_peer.go
index bc300bc..7d90c03 100644
--- a/wshandler/wshandler_peer.go
+++ b/wshandler/wshandler_peer.go
@@ -173,9 +173,9 @@ func (ws *websocketPeerHandler[T]) onSessionInvalidated(accid primitive.ObjectID
 
 func (ws *websocketPeerHandler[T]) RegisterHandlers(serveMux *http.ServeMux, prefix string) error {
 	go ws.sessionMonitoring()
-	
+
 	if *noAuthFlag {
-		serveMux.HandleFunc(prefix, ws.upgrade_nosession)
+		serveMux.HandleFunc(prefix, ws.upgrade_noauth)
 	} else {
 		serveMux.HandleFunc(prefix, ws.upgrade)
 	}
@@ -281,7 +281,7 @@ func (ws *websocketPeerHandler[T]) upgrade_core(conn *websocket.Conn, accid prim
 	}(conn, accid)
 }
 
-func (ws *websocketPeerHandler[T]) upgrade_nosession(w http.ResponseWriter, r *http.Request) {
+func (ws *websocketPeerHandler[T]) upgrade_noauth(w http.ResponseWriter, r *http.Request) {
 	// 클라이언트 접속
 	defer func() {
 		s := recover()
@@ -292,25 +292,37 @@ func (ws *websocketPeerHandler[T]) upgrade_nosession(w http.ResponseWriter, r *h
 		r.Body.Close()
 	}()
 
-	auth := strings.Split(r.Header.Get("Authorization"), " ")
-	if len(auth) != 2 {
-		w.WriteHeader(http.StatusBadRequest)
-		return
+	sk := r.Header.Get("AS-X-SESSION")
+	var accid primitive.ObjectID
+	if len(sk) > 0 {
+		logger.Println("WebsocketHandler.upgrade sk :", sk)
+		authinfo, err := ws.sessionConsumer.Query(sk)
+		if err == nil {
+			accid = authinfo.Account
+		}
 	}
 
-	temp, err := hex.DecodeString(auth[1])
-	if err != nil {
-		w.WriteHeader(http.StatusBadRequest)
-		return
-	}
+	if accid.IsZero() {
+		auth := strings.Split(r.Header.Get("Authorization"), " ")
+		if len(auth) != 2 {
+			w.WriteHeader(http.StatusBadRequest)
+			return
+		}
 
-	if len(temp) != len(primitive.NilObjectID) {
-		w.WriteHeader(http.StatusBadRequest)
-		return
-	}
+		temp, err := hex.DecodeString(auth[1])
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			return
+		}
 
-	raw := (*[12]byte)(temp)
-	accid := primitive.ObjectID(*raw)
+		if len(temp) != len(primitive.NilObjectID) {
+			w.WriteHeader(http.StatusBadRequest)
+			return
+		}
+
+		raw := (*[12]byte)(temp)
+		accid = primitive.ObjectID(*raw)
+	}
 
 	var upgrader = websocket.Upgrader{} // use default options
 	conn, err := upgrader.Upgrade(w, r, nil)