Re: Limit Single Instance

On 2006-01-31, Gordon Beaton penned:
>
> The other typical way is to open a ServerSocket listening on a
> specific port number. If that fails, you can assume your application
> is already running.
>
> This mechanism has two advantages:
>
> - the ServerSocket is automatically released regardless of how the
> application terminates, so no false positives are caused by failure
> to clean up (other applications or users using the same port number
> can still be a problem, so choose wisely).
>
> - a second program instance, upon failing to create the
> ServerSocket, can connect to the original and then exit, thereby
> signalling it to pop up or move to the front.
>
> /gordon

Ah, yes. Good points.

--
monique

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