Hickory DNS UDP client.

dns_client.rs

use std::str::FromStr;

use hickory_client::client::{AsyncClient, ClientHandle};
use hickory_client::rr::{DNSClass, Name, RecordType};
use hickory_client::udp::UdpClientStream;
use tokio::net::UdpSocket;

#[tokio::test]
async fn test() -> anyhow::Result<()> {
    let dns_socket_addr = ([223, 5, 5, 5], 53).into();
    let udp_client_stream = UdpClientStream::<UdpSocket>::new(dns_socket_addr);
    let (mut dns_client, dns_exchange_background) = AsyncClient::connect(udp_client_stream).await?;
    tokio::spawn(dns_exchange_background);

    let name = Name::from_str("github.com")?;
    let dns_response = dns_client.query(name, DNSClass::IN, RecordType::A).await?;

    let records = dns_response.answers();

    for record in records {
        println!("{:?}", record);
    }

    Ok(())
}

output.txt

/Users/rustist/.cargo/bin/cargo test --color=always --package playground --lib test --no-fail-fast -- --format=json --exact -Z unstable-options --show-output
Testing started at 6:44 PM ...
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
     Running unittests src/lib.rs (target/debug/deps/playground-d71fc203d211dfe7)
Record { name_labels: Name("github.com."), rr_type: A, dns_class: IN, ttl: 1, rdata: Some(A(A(20.205.243.166))) }

Process finished with exit code 0