Re: Anti-collide patch

[Joern Westermann <jw@xxxxxxxxxx>]

Michal *pht* Svoboda wrote:

> this makes me get another idea, if Guest 5432 changes nick to 2345, the
> server A could then FNC his 2345 to 5432 (i.e. the nick of the collider) ?
> 
Let me explain the problem:

3 servers, A - <big net> - B - C
The connection between B and C is lagging in direction towards C (e.g. C
has recently connected). There're lots of messages in the buffer from
B->C, but the queue C->B is empty since C only has to distribute its own
users as a leaf.
So any message issued by C gets to B/the net/A a lot faster than any
message from A to C.
Assume a client "victim" on A and a collider "killer" on C: The "killer"
can change to any nick it wants on C since all kill or nick messages
from A/B haven't got through to it yet. There's no nick delay since
there were no kills on C yet. But all "Nicks" are send to B with almost
no delay and B generates a kill towards the net and C, if it detects a
collide.

Your proposal of changing the victim's nick back to the nick of the
collider would only work if there is some kind of local nick history
which prevents to use nicks which were taken by any client no longer
than 5-10 minutes ago. But then there's probably a 2nd lagging server...

Bye
    Guenthi