}
			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, rw io.ReadWriter, s ws.State, want ws.OpCode) ([]byte, error) {