sender callback 등록 함수 추가

wshandler/wshandler.go

@@ -97,7 +97,23 @@ type Sender struct {
 	Region                string
 	Accid                 primitive.ObjectID
 	Alias                 string
-	DisconnectedCallbacks map[string]func()
+	disconnectedCallbacks map[string]func()
+}
+
+func (s *Sender) RegistDisconnectedCallback(name string, f func()) (old func()) {
+	if s.disconnectedCallbacks == nil {
+		s.disconnectedCallbacks = make(map[string]func())
+	}
+
+	old = s.disconnectedCallbacks[name]
+	s.disconnectedCallbacks[name] = f
+	return
+}
+
+func (s *Sender) PopDisconnectedCallback(name string) func() {
+	old := s.disconnectedCallbacks[name]
+	delete(s.disconnectedCallbacks, name)
+	return old
 }
 
 type EventReceiver interface {