import http from "node:http";
import Service from "../Service";
import type { ApiRequestMessage, NotifyApi } from "./ApiMessage";
interface Config {
    secure?: false;
    port: number;
    transformResponsePayload?: (payload: unknown, message: ApiRequestMessage) => unknown;
    transformRequestPayload?: (payload: unknown, message: ApiRequestMessage) => unknown;
    path?: string;
    paths?: string[];
    pingPath?: string;
    logConnections?: boolean;
}
interface SecureConfig extends Omit<Config, "secure"> {
    secure: true;
    keyPath: string;
    certPath: string;
}
declare class ApiService extends Service<NotifyApi> {
    private apiServiceConfig;
    private wsServer;
    private readonly _httpServer;
    private subscriptions;
    onHttpRequest: (req: http.IncomingMessage, res: http.ServerResponse<http.IncomingMessage> & {
        req: http.IncomingMessage;
    }) => void;
    constructor(config: Config | SecureConfig);
    get httpServer(): http.Server;
    start(): Promise<void>;
    stop(): Promise<void>;
    logSubscriptions(): void;
    private addSubscription;
    private removeSubscription;
    private removeAllSubscriptions;
    /**
     * This is where WebSocket connections are established. Both the initial
     * HTTP request and the underlying MessageConnection abstraction are available
     * here as parameters. It is a convenient place to harvest headers from the
     * HTTP request for the purpose of storing connection-persisnet data.
     */
    private onConnect;
    private onDisconnect;
    private checkAccess;
    private onReceiveClientMessage;
}
export default ApiService;