检测用户的点击何时进入服务器以及何时不在AngularJS Web应用程序中

Is there a way to detect when a user's click somewhere in our web app accesses to the server and when it does not? We need this knowledge for a simple keep alive mechanism we want to add to the app. I have already implemented the functionality to detect user clicks anywahere in page, using help from this post: Is there a way to detect when a user's click so