import { LoggerService } from '../logger.service';
import { Protocol, Url } from './protocol';
export declare class WebSocketProtocol extends Protocol {
    private url;
    private protocols;
    private static readonly AVAILABLE_FOR_USER_WS_CLOSE_STATUS;
    private socket;
    private sendQueue;
    private readyStateConstants;
    private normalCloseCode;
    private reconnectableStatusCodes;
    private dataStream;
    private internalConnectionState;
    private reconnectIfNotNormalClose;
    constructor(url: Url, loggerService: LoggerService, config?: WebSocketConfig, protocols?: Array<string>);
    connect(force?: boolean): void;
    send(data: any): Promise<any>;
    fireQueue(): void;
    close(force: boolean): WebSocketProtocol;
    setInternalState(state: any): void;
    /**
     * Could be -1 if not initzialized yet
     * @returns {number}
     */
    getReadyState(): number;
    start(): void;
    destroy(): void;
}
export interface WebSocketConfig {
    initialTimeout?: number;
    maxTimeout?: number;
    reconnectIfNotNormalClose?: boolean;
}