Hi folks, I had to solve a similar problem a couple of weeks ago. Although data is stored in a (firebird) database I did not use that information only to check for the users. My Concept was solved with some indy-components to set up a communication path between server and clients AND VICE VERSA(!) In the database I had a table of all allowed computers (Computername) together with the last known IP-address.
At server startup, Server builds a list of all users it thinks they are logged in When a new computer (user) logges in, it(he) is added to list and noticed in DB when logges off ... well seems clear Now for the extra: every 5 minutes, the server "pings" (not really ping, but sends a request and expects an answer) each client to see, if it is still alife, if not, logges it out. So if powerfails happen or a workstation crashes (which is more likely), the system will repair itself within a short time. hope that helps, have fun Bob ----------------------------------------------------- Home page: http://groups.yahoo.com/group/delphi-en/ To unsubscribe: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/delphi-en/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
