ethereumjs-monorepo

@ethereumjs/devp2p

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@ethereumjs/devp2p / ENR

Class: ENR

Defined in: packages/devp2p/src/dns/enr.ts:31

Constructors

Constructor

new ENR(): ENR

Returns

ENR

Properties

BRANCH_PREFIX

readonly static BRANCH_PREFIX: "enrtree-branch:" = 'enrtree-branch:'

Defined in: packages/devp2p/src/dns/enr.ts:34

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RECORD_PREFIX

readonly static RECORD_PREFIX: "enr:" = 'enr:'

Defined in: packages/devp2p/src/dns/enr.ts:32

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ROOT_PREFIX

readonly static ROOT_PREFIX: "enrtree-root:" = 'enrtree-root:'

Defined in: packages/devp2p/src/dns/enr.ts:35

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TREE_PREFIX

readonly static TREE_PREFIX: "enrtree:" = 'enrtree:'

Defined in: packages/devp2p/src/dns/enr.ts:33

Methods

parseAndVerifyRecord()

static parseAndVerifyRecord(enr, common?): PeerInfo

Defined in: packages/devp2p/src/dns/enr.ts:50

Converts an Ethereum Name Record (EIP-778) string into a PeerInfo object after validating its signature component with the public key encoded in the record itself.

The record components are:

signature: cryptographic signature of record contents seq: The sequence number, a 64-bit unsigned integer which increases whenever the record changes and is republished. A set of arbitrary key/value pairs

Parameters

enr

string

common?

Common

Returns

PeerInfo

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parseAndVerifyRoot()

static parseAndVerifyRoot(root, publicKey, common?): string

Defined in: packages/devp2p/src/dns/enr.ts:99

Extracts the branch subdomain referenced by a DNS tree root string after verifying the root record signature with its base32 compressed public key. Geth’s top level DNS domains and their public key can be found in: go-ethereum/params/bootnodes

Parameters

root

string

(See EIP-1459 for encoding details)

publicKey

string

common?

Common

Returns

string

subdomain subdomain to retrieve branch records from.

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parseBranch()

static parseBranch(branch): string[]

Defined in: packages/devp2p/src/dns/enr.ts:178

Returns subdomains listed in an ENR branch entry. These in turn lead to either further branch entries or ENR records.

Parameters

branch

string

Returns

string[]

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parseTree()

static parseTree(tree): ENRTreeValues

Defined in: packages/devp2p/src/dns/enr.ts:153

Returns the public key and top level domain of an ENR tree entry. The domain is the starting point for traversing a set of linked DNS TXT records and the public key is used to verify the root entry record

Parameters

tree

string

(See EIP-1459 )

Returns

ENRTreeValues