use *;
use SocketAddr;
/// For this example, we assume no DNS was used,
/// so the Host header should be an address.
///
/// Match when we get `accept: */*` exactly.
/// Create a server that requires header conditions:
///
/// - `Host` is a `SocketAddr`
/// - `Accept` is exactly `*/*`
///
/// If these conditions don't match, a 404 is returned.
async