/// <reference types="node" />
import { ILogger } from "@node-lightning/logger";
import { Readable } from "stream";
import { IWireMessage } from "../messages/IWireMessage";
import { IPeer, Peer } from "../Peer";
import { GossipFilter } from "./GossipFilter";
export declare enum ReadState {
    Ready = 0,
    Reading = 1,
    Blocked = 2
}
/**
 * Implements a decorator for the standard Peer adding functionality for Gossip
 * related activities. Messages from the GossipPeer occur after being pushed
 * through a GossipFilter to validate they are aokay.
 */
export declare class GossipPeer extends Readable implements IPeer {
    readonly peer: Peer;
    readonly filter: GossipFilter;
    readonly logger: ILogger;
    private _readState;
    private _receiver;
    private _syncRangeTask;
    /**
     * This class expects to be instantiated by a peer that is read and will
     * throw if the peer is not yet in the ready state. This ensures we can
     * construct the GossipPeer correctly using the negotiated features
     * @param peer
     * @param filter
     * @param logger
     */
    constructor(peer: Peer, filter: GossipFilter, logger: ILogger);
    /**
     * Returns true if the gossip_queries feature has been negotiated with the
     * remote peer.
     */
    get gossipQueries(): boolean;
    /**
     * Performs Gossip synchronization using the negotiated strategy. Currently
     * only support gossip_queries
     * @param firstBlock
     * @param numBlocks
     */
    syncRange(firstBlock?: number, numBlocks?: number): Promise<boolean>;
    /**
     * Enables the receipt of rumor mongered messages.
     */
    enableGossip(): void;
    /**
     * Disables the receipt of rumor mongered messages.
     */
    disableGossip(): void;
    /**
     * Sends the serialized data to the peer.
     * @param buf
     */
    send(buf: Buffer): void;
    /**
     * Sends a message to the peer using the default serialization.
     * @param msg
     */
    sendMessage(msg: IWireMessage): void;
    /**
     * Disconnects the peer
     */
    disconnect(): void;
    /**
     * Fires when a peer triggers the readable event. This method locks
     * to ensure only a single read event occurs at a time.
     * @returns
     */
    protected _onPeerReadable(): Promise<void>;
    /**
     * Internally process messages. If the message is a routing related message
     * it will pass through the GossipFilter, otherwise it will be immediately
     * broadcast.
     * @param msg
     */
    protected _onPeerMessage(msg: IWireMessage): Promise<IWireMessage[]>;
    _read(): void;
}