diff --git a/httpd/wcfrest/receiver.go b/httpd/wcfrest/receiver_url.go
similarity index 50%
rename from httpd/wcfrest/receiver.go
rename to httpd/wcfrest/receiver_url.go
index 51371396..ae210760 100644
--- a/httpd/wcfrest/receiver.go
+++ b/httpd/wcfrest/receiver_url.go
@@ -3,7 +3,6 @@ package wcfrest
 import (
 	"errors"
 
-	"github.com/gorilla/websocket"
 	"github.com/opentdp/go-helper/logman"
 	"github.com/opentdp/go-helper/request"
 
@@ -13,9 +12,6 @@ import (
 var urlReceiverKey = ""
 var urlReceiverList = map[string]bool{}
 
-var socketReceiverKey = ""
-var socketReceiverList = map[*websocket.Conn]bool{}
-
 func (wc *Controller) enableUrlReceiver(url string) error {
 
 	logman.Warn("enable receiver", "url", url)
@@ -59,47 +55,3 @@ func (wc *Controller) disableUrlReceiver(url string) error {
 	return nil
 
 }
-
-func (wc *Controller) enableSocketReceiver(ws *websocket.Conn) error {
-
-	logman.Warn("enable receiver", "socket", ws.RemoteAddr().String())
-
-	if socketReceiverList[ws] {
-		return errors.New("socket already exists")
-	}
-
-	if len(socketReceiverList) == 0 {
-		key, err := wc.EnrollReceiver(true, func(msg *wcferry.WxMsg) {
-			ret := wcferry.ParseWxMsg(msg)
-			for s := range socketReceiverList {
-				logman.Info("call receiver", "addr", s.RemoteAddr(), "Id", ret.Id)
-				go s.WriteJSON(ret)
-			}
-		})
-		if err != nil {
-			return err
-		}
-		socketReceiverKey = key
-	}
-
-	socketReceiverList[ws] = true
-	return nil
-
-}
-
-func (wc *Controller) disableSocketReceiver(ws *websocket.Conn) error {
-
-	logman.Warn("disable receiver", "addr", ws.RemoteAddr())
-
-	if !socketReceiverList[ws] {
-		return errors.New("socket not exists")
-	}
-
-	delete(socketReceiverList, ws)
-	if len(socketReceiverList) == 0 {
-		return wc.DisableReceiver(socketReceiverKey)
-	}
-
-	return nil
-
-}
diff --git a/httpd/wcfrest/receiver_ws.go b/httpd/wcfrest/receiver_ws.go
new file mode 100644
index 00000000..0836498e
--- /dev/null
+++ b/httpd/wcfrest/receiver_ws.go
@@ -0,0 +1,71 @@
+package wcfrest
+
+import (
+	"errors"
+	"sync"
+
+	"github.com/gorilla/websocket"
+	"github.com/opentdp/go-helper/logman"
+
+	"github.com/opentdp/wechat-rest/wcferry"
+)
+
+var socketReceiverKey = ""
+var socketReceiverList = map[*websocket.Conn]*WebSocketMutex{}
+
+type WebSocketMutex struct {
+	*websocket.Conn
+	mu sync.Mutex
+}
+
+func (w *WebSocketMutex) WriteJSON(v any) error {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	return w.Conn.WriteJSON(v)
+}
+
+func (wc *Controller) enableSocketReceiver(ws *websocket.Conn) error {
+
+	logman.Warn("enable receiver", "socket", ws.RemoteAddr().String())
+
+	if socketReceiverList[ws] != nil {
+		return errors.New("socket already exists")
+	}
+
+	wm := &WebSocketMutex{ws, sync.Mutex{}}
+
+	if len(socketReceiverList) == 0 {
+		key, err := wc.EnrollReceiver(true, func(msg *wcferry.WxMsg) {
+			ret := wcferry.ParseWxMsg(msg)
+			for s := range socketReceiverList {
+				logman.Info("call receiver", "addr", s.RemoteAddr(), "Id", ret.Id)
+				go s.WriteJSON(ret)
+			}
+		})
+		if err != nil {
+			return err
+		}
+		socketReceiverKey = key
+	}
+
+	socketReceiverList[ws] = wm
+	return nil
+
+}
+
+func (wc *Controller) disableSocketReceiver(ws *websocket.Conn) error {
+
+	logman.Warn("disable receiver", "addr", ws.RemoteAddr())
+
+	if socketReceiverList[ws] == nil {
+		return errors.New("socket not exists")
+	}
+
+	delete(socketReceiverList, ws)
+	if len(socketReceiverList) == 0 {
+		return wc.DisableReceiver(socketReceiverKey)
+	}
+
+	return nil
+
+}
diff --git a/wclient/robot/receiver.go b/wclient/robot/receiver.go
index 744703cd..7bc156ad 100644
--- a/wclient/robot/receiver.go
+++ b/wclient/robot/receiver.go
@@ -203,6 +203,12 @@ func hook10002(msg *wcferry.WxMsg) {
 		return
 	}
 
+	if revoke.Type == 47 {
+		output += "\n-------\n一个浪漫无敌的表情"
+		reply(msg, output)
+		return
+	}
+
 	output += "\n-------\n暂不支持回显的消息类型"
 	reply(msg, output)