fn connections(address: SocketAddr, config Config) -> Box<impl Stream<Item = impl Sink, Error = Error> {
    let listener = TcpListener::bind(&address).unwrap();

    Box::new(listener.incoming().map(move |socket| {
        Framed::new(
            socket,
            IrcCodec::new(config.encoding()).expect("Can't connect")
        )
    }))
}