encode (OpenID::Server::Encoder)

    # File lib/openid/server.rb, line 1129
          def encode(response)
            encode_as = response.which_encoding()
            if encode_as == ENCODE_KVFORM
              wr = @@responseFactory.new(HTTP_OK, nil,
                                         response.encode_to_kvform())
              if response.is_a?(Exception)
                wr.code = HTTP_ERROR
              end
            elsif encode_as == ENCODE_URL
              location = response.encode_to_url()
              wr = @@responseFactory.new(HTTP_REDIRECT,
                                         {'location' => location})
            elsif encode_as == ENCODE_HTML_FORM
              wr = @@responseFactory.new(HTTP_OK, nil,
                                         response.to_form_markup())
            else
              # Can't encode this to a protocol message.  You should
              # probably render it to HTML and show it to the user.
              raise EncodingError.new(response)
            end

            return wr
          end