use std::iter::Iterator;

use mio;

use base64::{encode};

pub const PROTOCOL_VERSION : u32 = 3;

pub const SERVER: mio::Token = mio::Token(1_000_000_000);

pub fn is_name_illegal(name: &str ) -> bool{

    name.len() > 40 ||

        name.trim().is_empty() ||

        name.chars().any(|c|

            "$()*+?[]^{|}\x7F".contains(c) ||

                '\x00' <= c && c <= '\x1F')

}

pub fn to_engine_msg<T>(msg: T) -> String

    where T: Iterator<Item = u8> + Clone

{

    let mut tmp = Vec::new();

    tmp.push(msg.clone().count() as u8);

    tmp.extend(msg);

    encode(&tmp)

}