Purpose of "Is Valid User Session"

Server Code Codeless
1

What is the purpose/use case for the block “Is Valid User Session”?
I didn’t find a documentation at Users API - Backendless Codeless Development Guide (this page doesn’t seem to be up to date).
What would be an invalid user session?

Regards,

2

Hi Klaas,

The block implements the following API:
Login - Backendless REST API Documentation

Regards,
Mark

3

Thanks. Understood. The docu is mentioning:
*However, when the application restarts, it needs to check if the underlying user token, and hence the user session are still valid. *
What does that mean for a web client? I guess “restart” then translates into “page reload”? How/where can I apply “is valid user session” then?

Regards

4

Yes, it would be page reload or open the app in another browser. You’d apply the login the first thing the app does, presumable in the “On Page Enter” event.

5

But “page reload” is different from “on page enter”. Technically, there is only one page, index.html.
I agree, if this is currently the most appropriate way, I could ask “is valid user session” on each page enter and send the user to the login page if not valid.
Regards

6

Every page has its own “On Page Enter” event. If in your app a user can enter application on any of the pages, then you might want to add this functionality everywhere (presumably via custom function to avoid logic duplication)