hebrew (windows-1255 encoded) nickname fail to connect

[LionOpeter]

I am trying to develop a webclient based on node-irc.
The IRC server's targer audience is hebrew talking people.I am using unrealircd with charset windows-1255.
Therefore, if someone wants to connect to the server with a hebrew nick-name he's got to use windows-1255 encoding or he will get: Nickname is unavailable: Illegal characters error message on conncet. This is the config i am using and the result i am getting: https://pastebin.com/Ge4VWW8N

1. Is this a bug?
2. How do i get this done?

[ineeee]

that isnt related to the library, its an irc daemon error