import type { IConnectionRecord, IPortProxySettings } from './classes.pp.interfaces.js';
/**
 * Manages timeouts and inactivity tracking for connections
 */
export declare class TimeoutManager {
    private settings;
    constructor(settings: IPortProxySettings);
    /**
     * Ensure timeout values don't exceed Node.js max safe integer
     */
    ensureSafeTimeout(timeout: number): number;
    /**
     * Generate a slightly randomized timeout to prevent thundering herd
     */
    randomizeTimeout(baseTimeout: number, variationPercent?: number): number;
    /**
     * Update connection activity timestamp
     */
    updateActivity(record: IConnectionRecord): void;
    /**
     * Calculate effective inactivity timeout based on connection type
     */
    getEffectiveInactivityTimeout(record: IConnectionRecord): number;
    /**
     * Calculate effective max lifetime based on connection type
     */
    getEffectiveMaxLifetime(record: IConnectionRecord): number;
    /**
     * Setup connection timeout
     * @returns The cleanup timer
     */
    setupConnectionTimeout(record: IConnectionRecord, onTimeout: (record: IConnectionRecord, reason: string) => void): NodeJS.Timeout;
    /**
     * Check for inactivity on a connection
     * @returns Object with check results
     */
    checkInactivity(record: IConnectionRecord): {
        isInactive: boolean;
        shouldWarn: boolean;
        inactivityTime: number;
        effectiveTimeout: number;
    };
    /**
     * Apply socket timeout settings
     */
    applySocketTimeouts(record: IConnectionRecord): void;
}