import { SocketFactory, SocketFactoryConnectCallback } from "pocket-sockets";
import { HandshakeFactoryConfig, HandshakeFactoryInterface, HandshakeFactoryHandshakeCallback, HandshakeFactoryHandshakeErrorCallback, HandshakeFactoryPublicKeyOverflowCallback } from "./types";
/**
 * This class extends the SocketFactory with handshake capabilties.
 * The SocketFactory EVENTS objects is redeclared here and extended.
 */
export declare class HandshakeFactory extends SocketFactory implements HandshakeFactoryInterface {
    protected handshakeFactoryConfig: HandshakeFactoryConfig;
    constructor(handshakeFactoryConfig: HandshakeFactoryConfig);
    /** Override from parent. */
    protected checkConnectionsOverflow(address: string, isServer?: boolean): boolean;
    protected handleOnConnect: SocketFactoryConnectCallback;
    init(): void;
    getHandshakeFactoryConfig(): HandshakeFactoryConfig;
    /**
     * Increase the counter connections per client public key.
     */
    protected increaseClientsCounter(peerPublicKey: string): void;
    protected decreaseClientsCounter(peerPublicKey: string): void;
    /**
     * @params peerPublicKey
     * @returns true if any limit is reached.
     */
    protected checkClientsOverflow(peerPublicKey: string): boolean;
    /**
     * Detect specific error in the handshake process.
     * This error is also emitted on the general onError event hook provided by SocketFactory.
     */
    onHandshakeError(callback: HandshakeFactoryHandshakeErrorCallback): void;
    onHandshake(callback: HandshakeFactoryHandshakeCallback): void;
    onPublicKeyOverflow(callback: HandshakeFactoryPublicKeyOverflowCallback): void;
}