code: func ControlFrameHandler(w io.Writer, state ws.State) FrameHandlerFunc {
  	return func(h ws.Header, r io.Reader) error {
  		return (ControlHandler{
  			DisableSrcCiphering: true,
  			Src:                 r,
  			Dst:                 w,
  			State:               state,
  		}).Handle(h)
  	}
  }
docs: // ControlFrameHandler returns FrameHandlerFunc for handling control frames.
  // For more info see ControlHandler docs.