packetToBytes

Encodes an ENS name into a DNS packet ByteArray. This is used for the off-chain resolution protocol (CCIP-Read).

Import

import "github.com/ChefBingbong/viem-go/utils/ens"

Usage

import "github.com/ChefBingbong/viem-go/utils/ens"

// Encode ENS name to DNS packet
bytes := ens.PacketToBytes("vitalik.eth")
// []byte{7, 'v', 'i', 't', 'a', 'l', 'i', 'k', 3, 'e', 't', 'h', 0}

// Get as hex string
hex := ens.PacketToBytesHex("vitalik.eth")
// "0x077669746c696b0365746800"

Returns

• Type: []byte for PacketToBytes, string for PacketToBytesHex

The DNS packet as bytes or hex string.

Parameters

packet (required)

• Type: string

The ENS name to encode as a DNS packet.

bytes := ens.PacketToBytes("vitalik.eth")
// []byte{7, 'v', 'i', 't', 'a', 'l', 'i', 'k', 3, 'e', 't', 'h', 0}

DNS Packet Format

The DNS packet format follows DNS encoding:

• Each label is prefixed with its length byte
• The packet ends with a zero byte
• Labels longer than 255 characters are encoded as labelhashes

Example: "vitalik.eth" becomes:

[7] 'v' 'i' 't' 'a' 'l' 'i' 'k' [3] 'e' 't' 'h' [0]

Functions

PacketToBytes

Encodes an ENS name to DNS packet bytes:

bytes := ens.PacketToBytes("vitalik.eth")

PacketToBytesHex

Encodes an ENS name to DNS packet hex string:

hex := ens.PacketToBytesHex("vitalik.eth")

Notes

• Leading and trailing dots are stripped
• Empty name returns []byte{0}
• Labels longer than 255 characters are encoded as labelhashes
• Used for CCIP-Read off-chain resolution protocol