import type { Server } from 'node:http';
import { EdgeNodeRepository } from '../identity/drizzle/EdgeNodeRepository';
interface ClusterWebSocketConfiguratorOptions {
    identityDbUrl: string;
    edgeNodesEnabled?: string | boolean;
    repository?: EdgeNodeRepository;
    clusterIngressDomain: string;
}
/**
 * ServerConfigurator that handles WebSocket upgrade requests for edge nodes.
 *
 * For proxy mode: proxies WebSocket connections through FRP tunnel
 * For direct mode: sends 307 redirect to edge node's public IP
 */
export declare class ClusterWebSocketConfigurator {
    protected readonly logger: import("global-logger-factory").Logger<unknown>;
    private readonly repository;
    private readonly enabled;
    private readonly clusterIngressDomain;
    private readonly wsProxy;
    constructor(options: ClusterWebSocketConfiguratorOptions);
    /**
     * Attach to HTTP server's upgrade event
     */
    handle(server: Server): Promise<void>;
    /**
     * Handle WebSocket upgrade request
     */
    private handleUpgrade;
    /**
     * Send HTTP error response for WebSocket upgrade failure
     */
    private sendUpgradeError;
    /**
     * Resolve upstream endpoint from node metadata
     */
    private resolveUpstream;
    /**
     * Extract hostname from request headers
     */
    private extractHostname;
    /**
     * Extract node ID from hostname
     */
    private extractNodeIdFromHostname;
    /**
     * Normalize domain input
     */
    private normalizeDomain;
    /**
     * Normalize boolean values
     */
    private normalizeBoolean;
    /**
     * Normalize access mode
     */
    private normalizeMode;
}
export {};