Michael Freno
7c684a42cc
- Consolidated duplicate UndoManagers to single instance - Fixed connection promise to only resolve on 'connected' status - Fixed WebSocketProvider import (WebsocketProvider) - Added proper doc.destroy() cleanup - Renamed isPresenceInitialized property to avoid conflict Co-Authored-By: Paperclip <noreply@paperclip.ing>
54 lines
1.6 KiB
TypeScript
54 lines
1.6 KiB
TypeScript
// Adapted from https://github.com/mafintosh/dns-packet
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import type { ErrorType } from '../../errors/utils.js'
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import type { ByteArray } from '../../types/misc.js'
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import {
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type StringToBytesErrorType,
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stringToBytes,
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} from '../encoding/toBytes.js'
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import {
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type EncodeLabelhashErrorType,
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encodeLabelhash,
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} from './encodeLabelhash.js'
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import { type LabelhashErrorType, labelhash } from './labelhash.js'
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export type PacketToBytesErrorType =
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| EncodeLabelhashErrorType
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| LabelhashErrorType
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| StringToBytesErrorType
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| ErrorType
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/*
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* @description Encodes a DNS packet into a ByteArray containing a UDP payload.
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*
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* @example
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* packetToBytes('awkweb.eth')
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* '0x0661776b7765620365746800'
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*
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* @see https://docs.ens.domains/resolution/names#dns
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*
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*/
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export function packetToBytes(packet: string): ByteArray {
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// strip leading and trailing `.`
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const value = packet.replace(/^\.|\.$/gm, '')
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if (value.length === 0) return new Uint8Array(1)
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const bytes = new Uint8Array(stringToBytes(value).byteLength + 2)
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let offset = 0
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const list = value.split('.')
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for (let i = 0; i < list.length; i++) {
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let encoded = stringToBytes(list[i])
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// if the length is > 255, make the encoded label value a labelhash
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// this is compatible with the universal resolver
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if (encoded.byteLength > 255)
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encoded = stringToBytes(encodeLabelhash(labelhash(list[i])))
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bytes[offset] = encoded.length
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bytes.set(encoded, offset + 1)
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offset += encoded.length + 1
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}
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if (bytes.byteLength !== offset + 1) return bytes.slice(0, offset + 1)
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return bytes
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}
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