断开连接或关闭浏览器后如何注销用户？

Question

I'm trying to work a solution to timing out a user from my web application. I'm currently using ng2-idle and it seems to only work on the active window rather than be tracked server side (angular server webpack)

I need to handle these two events in addition to the one above:

• On Browser Close
• On Connection loss (Power cut, blue screen, etc..)

After testing, my timeout was not being tracked after closing the window. Ng2-idle has modules such as keepalive but I'm not exactly sure how to use it and if it solves my problem

I will provide code if needed

thank you

Answer 1

The main problem is, that the client and server are communicating in stateless manner. This means if the user disconnects no body knows.

If your browser has a hook function for closing or navigating to another site you could use that and send the logout request.

Another thing which relavant is session expiration, you should use that. If you are using a token you will need to blacklist that, as non active as long as the session may be valid (or however).

Disconnect is a major problem (session expiration tried to solve that somehow). A more sophisticated way if it is really crucial to log out on disconnect you may need to use websockets or http long polling. You would need to send a heartbeat and if it's not responding, after some time you will automatically logout the user.

Hope these thoughts kind somehow help.

Answer 2

当您关闭浏览器会话时，会话将销毁。因此，您可以使用会话注销。