Re: nick collide prevention ideas

[Piotr Kucharski <chopin@xxxxxxxxxx>]

On Wed, Jul 07, 1999 at 08:52:42PM +0200, Q wrote:
> You probably want to make sure that if someone with an uid splits, and
> that uid comes back, it's the same person. This would make it easier for
> users.

Of course. Seems like you're missing the point, that uID consist of
sID (which is constant) and cID (which is counter increased each
client connects). As I wrote earlier, with 44^5 cID and 1 client
connecting every second to ircd server, we have to wait 5.2 years
for cID to be reused.

> What are you going to do then? keep a counter, and store the last one
> used at certain times (like every 1000). And then next time start with
> an high enough number. What in case the file is lost?

I don't get it.

> Or are you going to use a random number? This is the worst you can do.
> After 1K clients you already have 0.3% of a collision, after 10K 26%,
> 20K 70% .... (this is with 44^5 cID's)

I don't get those probability, either. Even if I tell ircd to assign
one random cID out of 44^5 (164916224) for every client that connects,
how did you get 26% with 10K clients on _one_ server (not mentioning,
that server can test first if it's used, as cIDs are local, not mentioning
at all, that I don't want to assign cIDs randomly).

p.