For those who are working on an interface mod, and happen to run into 2238 down (which fortunately happens rarely) here is a server which allows to look at your work in-game.
ip: 87.98.167.187
port: 4000
Server taken down, because of protocol changes, and sdk public release.
There is no registration, just login with any user/pass (you shouldn't use password from 2238 though).
Nothing works except chat.
Also:
type "rtty" in chat for victim (to test aiming window)
Note:
As on 2238 "My character is a flameboy" issue is present here, client restart is required after first login to get proper skin.