exports.app = function myAsyncApp(request){
  return function(responder) {
    responder.init(200, {});
    var i = 0;
    var intervalId = setInterval(function(){
      responder.write("Every second another message");
      if(i++ == 10){
        responder.close();
        clearInterval(intervalId);
      }
    }, 1000);
  };
}