# File lib/rack/handler/mongrel.rb, line 45
      def process(request, response)
        env = {}.replace(request.params)
        env.delete "HTTP_CONTENT_TYPE"
        env.delete "HTTP_CONTENT_LENGTH"

        env["SCRIPT_NAME"] = ""  if env["SCRIPT_NAME"] == "/"

        rack_input = request.body || StringIO.new('')
        rack_input.set_encoding(Encoding::BINARY) if rack_input.respond_to?(:set_encoding)

        env.update({"rack.version" => [1,1],
                     "rack.input" => rack_input,
                     "rack.errors" => $stderr,

                     "rack.multithread" => true,
                     "rack.multiprocess" => false, # ???
                     "rack.run_once" => false,

                     "rack.url_scheme" => "http",
                   })
        env["QUERY_STRING"] ||= ""

        status, headers, body = @app.call(env)

        begin
          response.status = status.to_i
          response.send_status(nil)

          headers.each { |k, vs|
            vs.split("\n").each { |v|
              response.header[k] = v
            }
          }
          response.send_header

          body.each { |part|
            response.write part
            response.socket.flush
          }
        ensure
          body.close  if body.respond_to? :close
        end
      end