Function tcp_listener_fn

async fn tcp_listener_fn(
    address: SocketAddr,
    encrypted: bool,
    tx: Sender<ConnectionData>,
    listen_error_tx: &Sender<Option<Box<dyn Error + Send + Sync>>>,
    logging_tx: Option<Sender<LogMessage>>,
    first_startup: bool,
    tcp_buffer_sizes: (Option<usize>, Option<usize>),
) -> Result<(), Box<dyn Error + Send + Sync>>

TCP listener function