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From Arion Yu <>
Subject Re: Unique identifier for a server process.
Date Tue, 18 Jul 2000 02:06:53 GMT

I have an idea but don't know if it works.

for each VM,
while (true) {
try {
create a ServerSocket listening on a particular port;
log the current time (the identifier for the VM);
close the socket;
catch (some exception) {
// try again after some time


Matthew Dornquast wrote:

> Java question: How do I get a globally unique Identifier for an
> instance of a VM without relying on an external configuration?  Is
> there any way to do this without using JNI? IP Address is a good
> start, as generally it's unique. (Yes, I know non-routable disqualify,
> but the scope is LAN related)  The challenge is what happens when two
> or more copies of a server are running on the same box. This relates
> to something I'm doing with sessions for Tomcat. Any help/suggestions
> appreciated. -Matthew

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