Webapp Users online

General
1

Hi to all ,
can I check users who are online in the web application? I don’t like writing to the db when logging in.
Thanks for the help

2

Hi Frantisek,

You can check the amount of WebSessions, using WebApplication.SessionCount.

If you want to have a list of unique logged users without a DB, you can add a property (for example: LoggedUserId) to your Session class, with the logged user ID.

Var activeUsers As New Dictionary
For Each activeSession As WebSession In App.Sessions
  If activeSession.LoggedUserId > 0 Then
    activeUsers.Value(activeSession.LoggedUserId) = True
  End If
Next

Var loggedUsers As Integer = activeUsers.KeyCount

Just remember to fill the LoggedUserId as soon as the user logs in, and set it to 0 again when the user logs out.

3

Hi
This is a good idea, but if the user does not logout, he just closes the browser and the logout procedure does not take place.

4

The WebSession will expire eventually (180 seconds by default), and will disappear from that list.

https://documentation.xojo.com/api/web/webapplication.html#webapplication-sessiontimeout