import mqtt from 'mqtt';
import { HandleMessage, MessageClient } from './BasicMessageClient';
import { CompleteMessageCliOption } from './MessageBroker';
export declare class MqttMsgClient extends MessageClient {
    cli: mqtt.MqttClient;
    retryTimes: number;
    subMsgHandler: Map<string, HandleMessage>;
    constructor(options: CompleteMessageCliOption);
    subscribe(destination: string, handle: HandleMessage): boolean;
    unsubscribe0(destination: string): void;
    get connected(): boolean;
    close(): void;
}