accounting vs long lived nodes

[Michael Tharp]

David Vennik wrote:
> I use tor most often for irc, although I have recently shifted my
> customary irc hangout to the ORC away from a little one i used to hang
> out at, and on ORC tor proxying is a prerequesite.
>
> As a user of tor with irc, it has become the most common bitch of anyone
> i've talked to about the endless process of dying circuits, and while
> thinking about it recently i realised there was one thing that could be
> built into tor that would reduce the number of mis-guesses of long-lived
> tor nodes: accounting!
>
> If a node has bandwidth accounting, it should not be listed as long
> lived, because obviously it is likely to go down at any moment. I don't
> know if it will make that much difference to persistent session use on
> tor or not, but I think that it is only logical that bandwidth
> accounting should flag a 'not long lived' flag on the server information
> so that circuits to irc and ssh and other long lived connections don't
> use it. i know this might 'reduce anonymity' through the weakening of
> defenses against traffic analysis, but endless reconnections to irc
> servers, in my experience, is annoying both to myself and to the endless
> timeouts in the ORC which is exclusively tor-accessible.
>
> Regards,
>
> David Vennik
>   

Doesn't tor already have this? Connections to certain ports (21, 22, 80 
among others) that are typically reserved for long-lived connections 
will avoid nodes that have been up for less than a certain amount of time.