/// <reference types="node" />
import Wire from '../Wire';
import { HandshakeExtensions, ExtendedHandshake } from '../Extension';
import { BitFieldData } from 'bitfield';
export declare type ExtensionExtraFields = {
    [key: string]: Buffer;
};
export interface IExtension {
    wire: Wire;
    name: string;
    requirePeer?: boolean;
    extraFields?: ExtensionExtraFields;
    sendExtendedMessage: (data: object) => void;
    onHandshake: (infoHash: string, peerId: string, extensions: HandshakeExtensions) => void;
    onExtendedHandshake: (handshake: ExtendedHandshake) => void;
    onMessage: (buf: Buffer) => void;
    onPiece?: (index: number, offset: number, buffer: Buffer) => Promise<void>;
    onFinish?: () => Promise<void>;
    onCancel?: (index: number, offset: number, length: number) => Promise<void>;
    onRequest?: (index: number, offset: number, length: number) => Promise<void>;
    onBitField?: (bitfield: BitFieldData) => Promise<void>;
    onHave?: (index: number) => Promise<void>;
    onUninterested?: () => Promise<void>;
    onInterested?: () => Promise<void>;
    onUnchoke?: () => Promise<void>;
    onChoke?: () => Promise<void>;
}