require 'rubygems' require 'time' require 'uri' require 'rexml/document' require 'nokogiri' require 'webrick/httputils' require 'rack' require 'rack_dav/http_status' require 'rack_dav/resource' require 'rack_dav/file_resource' require 'rack_dav/handler' require 'rack_dav/controller'