import type { IncomingMessage } from 'node:http';
import type { Duplex } from 'node:stream';
import type { ArkmeService } from './arkme-service.js';
/** Host-owned, receive-only event transport; no business commands or credentials. */
export declare class ArkmeRealtimeEvents {
    private readonly service;
    private readonly options;
    private readonly server;
    private readonly awaitingPong;
    private readonly unsubscribe;
    private readonly heartbeat;
    private closed;
    constructor(service: ArkmeService, options: {
        expectedPort: number;
        allowNonLoopback: boolean;
    });
    readonly handler: (req: IncomingMessage, socket: Duplex, head: Buffer) => void;
    close(): void;
    private allowed;
}
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