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RE: Using Mutex

To: "'REALbasic NUG'" <realbasic-nug at lists dot realsoftware dot com>
Subject: RE: Using Mutex
From: "Walter Purvis" <wpurvis at gmail dot com>
Date: Sun, 30 Sep 2007 20:51:50 -0400
Delivered-to: listarchive at realsoftware dot com
Delivered-to: realbasic-nug at lists dot realsoftware dot com
References: <8D344B96-66A8-4368-B87C-EFA9245AADC7 at classonesoftware dot com><47003FC5 dot 4070000 at bellsouth dot net> <3C5A5B57-C7B1-493B-9125-C5781608C64A at classonesoftware dot com>
Thread-index: AcgDwnAjDJdPO5MnQyOS7WF/B1eYDgAAlk+w
>  -----Original Message-----
>  The situation I'm looking at is one in which the user 
>  installs my app on a network drive and then launches the app 
>  concurrently from multiple clients.
>   From my testing, this is possible on a Win platform.
>  I want to prohibit this unless a site license has been purchased.

Look at the AutoDiscovery class. That will allow your applications to find
each other on the network, i.e., when your application launches it can
discover if other copies are running and then inform the user that it's
quitting because of ____________. It is possible to defeat this with
firewalls, etc., but that's probably true of every networked protection
scheme.


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