display message for successful single-logout from relying parties
For security and usability reasons it would be good, if the user gets a message which tells him, when the logout-processes is successfully finished.
From my understanding at present (2.0.9) it is only checked, if the logout process is started correctly, but not if it has successfully finished.
Two improvements would be good:
- Check if the logout process is successful finished, by checking the responses from the other relying parties
- Display the message as soon as possible, so that the user has to wait only as long as it is necessary and not for a constant time.