From: Caleb Tennis <caleb@...>
Date: 2006-01-21T03:19:25+09:00
Subject: Re: basic WEBrick question


> I tried again a while ago and it's now working under Windows. Makes me
> think that for some reasons when I killed the server it didn't
> immediately free up the port. However, under Linux it's still saying
> the port is in use.

There's usually a setting you can use to tell the OS to allow you to reuse the 
port once it's closed.  I don't have my Pickaxe in front of me, but I do have 
my camel book and in Perl there's a "Reuse" parameter that gets passed to new 
TCP Sockets to be able to reuse the port.  I'm guessing Webrick has something 
similiar.

> Is there an easy way I can ask Linux for a list of all the ports in use?

"netstat -at" for TCP ports.