class Rack::Protection::EscapedParams

def call(env)
  request  = Request.new(env)
  get_was  = handle(request.GET)
  post_was = begin
    handle(request.POST)
  rescue StandardError
    nil
  end
  app.call env
ensure
  request.GET.replace  get_was  if get_was
  request.POST.replace post_was if post_was
end