List IP addresses of all validators

Question

Is it possible to determine all of the IP addresses of validators on the network? I imagine it is necessary to be able to, but is there a direct call that can be made to a running validator node?

Edit: I've tried calling authority-discovery a few ways, but it seems there are issues accessing it due to private fields. I haven't found any examples of it being called directly except for tests, which have their own pseudo instantiations (not sure the proper Rust terminology). The supposed "polkadot-sdk" is starting to feel a little "black box".

let (worker, service) = sc_authority_discovery::new_worker_and_service(
    client.clone(),
    network.clone(),
    Box::pin(dht_event_stream),
    authority_discovery_role,
    prometheus_registry.clone(),
);

This is from a test, but I haven't seen a clean example of the client and network objects being created in the docs or any other project.

Answer 1

You can use authority-discovery to get the current and next set of authorities but I'm not aware of any direct calls that you can make to fetch the IP addresses of validators.

The look-up yields a Vec<Multiaddr> which contains the addresses the authority can be reached at.