middleware

# File railties/lib/rails/commands/server.rb, line 87
    def middleware
      middlewares = []
      if RUBY_VERSION < '2.0.0'
        middlewares << [Rails::Rack::Debugger] if options[:debugger]
      end
      middlewares << [::Rack::ContentLength]

      # FIXME: add Rack::Lock in the case people are using webrick.
      # This is to remain backwards compatible for those who are
      # running webrick in production. We should consider removing this
      # in development.
      if server.name == 'Rack::Handler::WEBrick'
        middlewares << [::Rack::Lock]
      end

      Hash.new(middlewares)
    end