xip.io request hack

xip_hack.rb

if Rails.env.development?
  class XipIoMiddleware
    def initialize(app)
      @app = app
    end

    def call(env)
      %w{HTTP_HOST SERVER_NAME SERVER_ADDR HTTP_X_FORWARDED_HOST}.each do |key|
        env[key] = env[key].sub(/myapp\.\d+\.\d+\.\d+\.\d+\.xip\.io/, "myapp.dev") if env[key].present?
      end
      @app.call(env)
    end
  end

  MyApp::Application.configure do
    config.middleware.insert_before 0, XipIoMiddleware
  end
end

Or you could use Rack middleware and replace env['HTTP_HOST'] and env['SERVER_NAME'].

Or you could simply correct the TLD length: https://github.com/fphilipe/xipio/blob/master/lib/xipio/middleware.rb#L8-L9