# File lib/httpclient/auth.rb, line 242
    def get(req)
      target_uri = req.header.request_uri
      return nil unless @challengeable.find { |uri, ok|
        Util.uri_part_of(target_uri, uri) and ok
      }
      return @cred if @cred
      Util.hash_find_value(@auth) { |uri, cred|
        Util.uri_part_of(target_uri, uri)
      }
    end