How to detect auto logout event?

[Juvigy]

I have a script that logs to a site and works with it , but if the user is inactive for a certain time the site has logged out the user. How can i easily detect that and start the login procedure when needed?

[colafrysen]

I really don't have a good idea but it would not surprise me If there is a string on the website which says something like "Welcome %username%" or similar. If this is the Case Then you could do an search for that string.

It might also be possible that the website uses cookies which dissapears after a While.

Edited May 29, 2009 by colafrysen

[Juvigy]

At the moment i do it the clumsy way as:

1.Navigate to the same address

2.Check if you are redirected to the login page - if yes the autologout has accured

3.Do the login procedure and continue

But there has to be a better way.More elegant way.