IRC SASL Auth

extern crate irc;
extern crate base64;

use irc::client::prelude::*;
use irc::proto::command::Command::*;
use irc::proto::CapSubCommand::*;
use base64::encode;

fn main() {
    let server = IrcServer::new("config.toml").unwrap();
    let auth_str = format!("{}\u{0000}{}\u{0000}{}", server.config().nickname().to_owned(), server.config().username().to_owned(), server.config().nick_password().to_owned());
    println!("{}", auth_str);
    server.send_cap_ls(NegotiationVersion::V302).unwrap();
    server.send(NICK(server.config().nickname().to_owned())).unwrap();
    server.send(USER(server.config().username().to_owned(), "0".to_owned(), server.config().real_name().to_owned())).unwrap();
    server.send_cap_req(&[Capability::Sasl]).unwrap();
    server.send_sasl_plain().unwrap();
    server.for_each_incoming(|msg| {
        println!("{}", msg.to_string().trim());
        if msg.to_string().trim() == "AUTHENTICATE +" {
            server.send_sasl(&encode(&auth_str[..])).unwrap();
            server.send(CAP(None, END, None, None)).unwrap();
        }
    }).unwrap()
}