Cargo Features

libp2p-dns has no features set by default.

[dependencies]
libp2p-dns = { version = "0.41.1", features = ["async-std", "tokio"] }
async-std = async-std-resolver

Affects libp2p-dns::async_std

tokio

Enables tokio-runtime of hickory-resolver

Affects libp2p-dns::tokio

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

async-std-resolver async-std?