    # File lib/fog/rackspace/identity.rb, line 43
            def initialize(options={})
              @rackspace_username = options[:rackspace_username]
              @rackspace_api_key = options[:rackspace_api_key]
              @rackspace_auth_url = options[:rackspace_auth_url] || US_ENDPOINT

              uri = URI.parse(@rackspace_auth_url)
              @host = uri.host
              @path = uri.path
              @port = uri.port
              @scheme = uri.scheme
              @persistent = options[:persistent] || false
              @connection_options = options[:connection_options] || {}
              @connection = Fog::Connection.new(uri.to_s, @persistent, @connection_options)

              authenticate
            end