discv5::EnrRecord

Parsed Ethereum Node Record as defined by EIP-778. More...

#include <discv5_types.hpp>

Public Attributes

	Name
uint64_t	seq Sequence number. Higher value → more recent record.
std::vector< uint8_t >	raw_rlp Raw RLP bytes of the complete record (signature + content). Stored so that the signature can be re-verified later.
NodeId	node_id 64-byte uncompressed node public key (sans 0x04 prefix). Derived from the "secp256k1" (compressed) field.
std::array< uint8_t, kCompressedKeyBytes >	compressed_pubkey 33-byte compressed secp256k1 public key as stored in the record.
std::string	ip IPv4 address string (empty if absent).
std::string	ip6 IPv6 address string (empty if absent).
uint16_t	udp_port UDP discovery port (0 if absent).
uint16_t	tcp_port TCP RLPx port (0 if absent).
uint16_t	udp6_port UDP discovery port for IPv6 endpoint (0 if absent).
uint16_t	tcp6_port TCP port for IPv6 endpoint (0 if absent).
std::string	identity_scheme ENR identity scheme name, e.g. "v4" for secp256k1-v4.
std::optional< ForkId >	eth_fork_id Optional Ethereum fork identifier parsed from the "eth" entry.
std::unordered_map< std::string, std::vector< uint8_t > >	extra_fields Unknown key–value pairs preserved verbatim (key → raw bytes).

Detailed Description

struct discv5::EnrRecord;

Parsed Ethereum Node Record as defined by EIP-778.

All fields are optional except seq, raw_rlp, and node_id (which are populated whenever a record is successfully parsed by EnrParser).

Key–value pairs that are not natively understood are stored verbatim in extra_fields so that the record can be re-serialised without loss.

Public Attributes Documentation

variable seq

uint64_t seq {};

Sequence number. Higher value → more recent record.

variable raw_rlp

std::vector< uint8_t > raw_rlp {};

Raw RLP bytes of the complete record (signature + content). Stored so that the signature can be re-verified later.

variable node_id

NodeId node_id {};

64-byte uncompressed node public key (sans 0x04 prefix). Derived from the "secp256k1" (compressed) field.

variable compressed_pubkey

std::array< uint8_t, kCompressedKeyBytes > compressed_pubkey {};

33-byte compressed secp256k1 public key as stored in the record.

variable ip

std::string ip {};

IPv4 address string (empty if absent).

variable ip6

std::string ip6 {};

IPv6 address string (empty if absent).

variable udp_port

uint16_t udp_port {};

UDP discovery port (0 if absent).

variable tcp_port

uint16_t tcp_port {};

TCP RLPx port (0 if absent).

variable udp6_port

uint16_t udp6_port {};

UDP discovery port for IPv6 endpoint (0 if absent).

variable tcp6_port

uint16_t tcp6_port {};

TCP port for IPv6 endpoint (0 if absent).

variable identity_scheme

std::string identity_scheme {};

ENR identity scheme name, e.g. "v4" for secp256k1-v4.

variable eth_fork_id

std::optional< ForkId > eth_fork_id {};

Optional Ethereum fork identifier parsed from the "eth" entry.

variable extra_fields

std::unordered_map< std::string, std::vector< uint8_t > > extra_fields {};

Unknown key–value pairs preserved verbatim (key → raw bytes).

---

Updated on 2026-04-13 at 23:22:46 -0700