let config = (Ipv4Addr::new(239, 255, 80, 80), 8080, 8080);

    let mut server = Server::new(&mut event_loop, config);

    let mut server = Server::new(&mut event_loop, Config {
        addr: Ipv4Addr::new(239, 255, 80, 80),
        port: 8080,
    });

    config: (Ipv4Addr, u16, u16),

    config: Config,

struct Config {
    addr: Ipv4Addr,
    port: u16,
}

    fn new(event_loop: &mut EventLoop<Self>, config: (Ipv4Addr, u16, u16)) -> Self {

    fn new(event_loop: &mut EventLoop<Self>, config: Config) -> Self {

        udp_socket.join_multicast(&IpAddr::V4(config.0)).unwrap();

        udp_socket.join_multicast(&IpAddr::V4(config.addr)).unwrap();

            SocketAddrV4::new(Ipv4Addr::new(0, 0, 0, 0), config.1)

            SocketAddrV4::new(Ipv4Addr::new(0, 0, 0, 0), config.port)

        let multicast_addr = SocketAddr::V4(SocketAddrV4::new(self.config.0, self.config.2));

        let multicast_addr = SocketAddr::V4(SocketAddrV4::new(self.config.addr, self.config.port));