DNSClient.ts

A reference implementation non-native DNS Client in TypeScript for Node.js.

Not for production. In any case, you should use the native DNS clients
on production applications. Other than being more heavily-scrutinized, they have
major perf benefits.

Usage

Get the dependency using npm install DNSClient.ts

Then, you can do queries like so:
``TypeScript
import { DNSClient, Types } from 'DNSClient.ts';

// You may also use 'udp' and 'tls' as alternative transports
let client = new DNSClient('tcp', '1.1.1.1');
client.query({
name: 'google.com',
type: Types.RecordType.A,
qClass: Types.RecordClass.IN
}).then( (response: Types.IMessage) => {
console.log(response);
/*
Response Example
{
header: {
id: 0, qr: true, opcode: 0, aa: false, tc: false, rd: false, ra: true,
z: 0, rcode: 0, qdcount: 1, ancount: 1, nscount: 0, arcount: 0
},
questions: [{ name: 'google.com', type: 1, qClass: 1 }],
answers: [{
name: '', type: 1, class: 1, ttl: 116, rdLength: 4,
rdata: { address: '172.217.14.238' }
}],
authorities: [],
additionals: []
}
*/
});
``

RFCs and completion

Only those relevant to client implementations will be listed. Finding and adding
all of them will take some time.

$3

Core functionality and any internet-specific extensions.
| RFC | Name | Support |
| ------------- |:-------------:| -----:|
| 1035 | Domain Names — Implementation and Specification | ✅ |
| 6891 | Extension Mechanisms for DNS (EDNS(0)) | TODO |

$3

Securing the communication between client and server, as well as server-to-server.
| RFC | Name | Support |
| ------------- |:-------------:| -----:|
| 7858 | DNS over Transport Layer Security (TLS) | ✅ |
| 8484 | DNS Queries over HTTPS (DoH) | in progress |

$3

Validating and authenticating the responses of servers (DNSSEC). TODO.