/// <reference types="node" />
import { Client } from "ts-nats";
import net from 'net';
export declare class FrontendSession {
    readonly id: string;
    onDestroy?: () => void;
    onBackendSelected?: (id: string) => void;
    private pendingFrames;
    private nc;
    private host;
    private socket;
    private destroyed;
    private backendId;
    private backendSocketId;
    private started;
    private incomingSubscription;
    private connectionTimer;
    private logger;
    constructor(nc: Client, host: string, header: Buffer, socket: net.Socket);
    start(): void;
    private _init;
    private _onSocketFrame;
    private _onSocketClose;
    destroy(): void;
}