# File lib/new_relic/agent/transaction/request_attributes.rb, line 18
        def initialize request
          @request_path = path_from_request request
          @referer = referer_from_request request
          @accept = attribute_from_env request, HTTP_ACCEPT_HEADER_KEY
          @content_length = content_length_from_request request
          @content_type = attribute_from_request request, :content_type
          @host = attribute_from_request request, :host
          @port = port_from_request request
          @user_agent = attribute_from_request request, :user_agent
          @request_method = attribute_from_request request, :request_method
        end