/// <reference types="node" />
import { PeerHostRecord } from "../PeerHostRecord";
import { promises as dnsPromises } from "dns";
import { AddressType } from "../domain/AddressType";
export interface DnsPeerQueryOptions {
    /**
     * The domain of the dns seed.
     */
    dnsSeed: string;
    /**
     * The realm byte used to specify what realm the returned nodes must support.
     */
    realm?: number;
    /**
     * The address type bit field specifies the address types that should be returned.
     * It follows the format of the address descriptor type specified in BOLT #7.
     */
    addressTypes?: AddressType[];
    /**
     * The bech32-encoded node id used to retrive the result of a single node.
     */
    nodeId?: string;
    /**
     * The number of desired reply records.
     */
    desiredReplyRecords?: number;
}
/**
 * This class implements the node discovery mechanism described
 * in BOLT #10.
 * The purpose of this component is to assist in the initial
 * node discovery process for nodes that have no known contacts,
 * and to help nodes discover the current network address of previously
 * known peers. A domain name server that implements BOLT #10 is
 * referred to as a DNS Seed and answers incoming DNS queries of
 * type A, AAAA, or SRV.
 */
export declare class DnsPeerQuery {
    private resolver;
    constructor(resolver?: dnsPromises.Resolver);
    /**
     * The query method starts by querying a DNS seed for SRV records.
     * This will result in a list of returned SRV records that each
     * represent a lightning node that can be connected to. Each record
     * is a subdomain of the dns seed where the first component of the
     * subdomain is the bech32 encoded public key of the node (also known
     * as the node_id). Each subdomain can subsequently be used to query
     * the DNS seed for the A (or AAA) records of the lightning node with
     * the specified node_id. The query method ends by constructing peer
     * host records using the port from the SRV records and the ip
     * address from the A (or AAA) records.
     * @param dnsPeerQueryOptions
     * @returns valid peer host records
     */
    query(dnsPeerQueryOptions: DnsPeerQueryOptions): Promise<PeerHostRecord[]>;
    private _createPeerHostRecord;
    private _buildUrl;
    private _getPublicKeyFromSrvRecord;
    private _getPeerSrvRecords;
    private _resolveSrvNameToIp;
}