The solution to this problem is optimistic concurrency control, which is fully supported in DevForce.

 

 

Denis, we have a custom concurrency system we're trying to get to release locks when the user becomes inactive. I saw the Login Manager while reading DevForce documentation and thought it might be able to satisfy our needs. But if there's no way to intercept session expiration it seems like this is a lost cause. Do you have any suggestions for this?

 

Also, not sure how helpful the Debug Log will be here.

1. You can capture the Browser unload event using JavaScript and pass it on to the SL plug in. See http://mark.mymonster.nl/2009/02/28/integration-of-browsers-unloading-with-silverlight/ for an example.

2. There's currently no way to intercept session expiration on the server. If you want to do your custom clean ups, you can implement that in your Logout method. I'm curious though, what clean ups are you trying to do as the EntityServer should never keep state ?

3. Debug Log (http://drc.ideablade.com/xwiki/bin/view/Documentation/debug) provides one way to view this. You can also implement your own custom logger (http://drc.ideablade.com/xwiki/bin/view/Documentation/custom-logger) so you can log any login process in your IEntityLoginManager implementation.