import type { Logger } from "@/logger.js";
export interface BrowserRelayConfig {
    enabled: boolean;
    host: string;
    port: number;
    requireAuth: boolean;
    authToken?: string;
    maxMessageBytes: number;
}
export declare function isLoopbackHost(host: string): boolean;
export declare class BrowserRelayServer {
    private readonly config;
    private readonly logger;
    private server;
    private extensionSocket;
    private cdpSockets;
    private latestSessionId;
    private sessionByTargetId;
    private targetBySessionId;
    constructor(config: BrowserRelayConfig, logger: Logger);
    get running(): boolean;
    get wsEndpoint(): string;
    get healthEndpoint(): string;
    private buildWsUrl;
    private validateStartupConfig;
    start(): void;
    stop(): void;
    private handleFetch;
    private authenticateSocket;
    private handleOpen;
    private handleClose;
    private handleMessage;
    private handleExtensionMessage;
    private handleCdpMessage;
    private trackTargetSessions;
    private broadcastToCdp;
    private sendJson;
}