This library exposes new types that wrap _either_
`TcpSocket` or `UnixSocket` types.
This library compiles on Windows but doesn't support UnixSocket types.
Before:
```
if addr.starts_with("unix:") {
let socket = UnixListener::bind(&addr["unix:".len() ..]).expect("binding");
while let Ok(socket) = socket.accept() {
// ...
}
}
else {
let socket = TcpListener::bind(addr).expect("binding");;
while let Ok(socket) = socket.accept() {
// ...
}
}
```
After:
```
let socket = addr.bind_any().expect("binding");
while let Ok(socket) = socket.accept() {
// ...
}
```