@multiformats/dns/src/utils/to-dns-response.ts

Resolve DNS queries with browser fallback

import { toString as uint8ArrayToString } from 'uint8arrays/to-string'
import { RecordType, type DNSResponse } from '../index.js'

/**
 * This TTL will be used if the remote service does not return one
 */
export const DEFAULT_TTL = 60

export function toDNSResponse (obj: any): DNSResponse {
  return {
    Status: obj.Status ?? 0,
    TC: obj.TC ?? obj.flag_tc ?? false,
    RD: obj.RD ?? obj.flag_rd ?? false,
    RA: obj.RA ?? obj.flag_ra ?? false,
    AD: obj.AD ?? obj.flag_ad ?? false,
    CD: obj.CD ?? obj.flag_cd ?? false,
    Question: (obj.Question ?? obj.questions ?? []).map((question: any) => {
      return {
        name: question.name,
        type: RecordType[question.type]
      }
    }),
    Answer: (obj.Answer ?? obj.answers ?? []).map((answer: any) => {
      return {
        name: answer.name,
        type: RecordType[answer.type],
        TTL: (answer.TTL ?? answer.ttl ?? DEFAULT_TTL),
        data: answer.data instanceof Uint8Array ? uint8ArrayToString(answer.data) : answer.data
      }
    })
  }
}