}
		c.connChange.L.Unlock()
		conn.Close()
		c.handleMsgWg.Done()
	}()

	controlHandler := wsutil.ControlFrameHandler(conn, c.side)
	wsReader := wsutil.Reader{
		Source:          conn,
		State:           c.side,
		CheckUTF8:       true,
		SkipHeaderCheck: false,
		OnIntermediate:  controlHandler,
	}
	readDataInto := func(dst []byte, s ws.State, want ws.OpCode) ([]byte, error) {
		dst = dst[:0]