Method AddCloseCallback

znet/kcp_connection.go:607–614

(handler, key interface{}, f func())

}

func (s *KcpConnection) AddCloseCallback(handler, key interface{}, f func()) {
	if s.isClosed() {
		return
	}
	s.closeCallbackMutex.Lock()
	defer s.closeCallbackMutex.Unlock()
	s.closeCallback.Add(handler, key, f)
}

func (s *KcpConnection) RemoveCloseCallback(handler, key interface{}) {
	if s.isClosed() {