import type { WSComponentDependencies, SecurityValidationOptions, ConnectionVerificationInfo, ConnectionVerificationCallback } from './types.js';
export declare class SecurityManager {
    private logger;
    private rateLimitState;
    private rateLimiter;
    private options;
    constructor({ logger }: WSComponentDependencies, options?: SecurityValidationOptions);
    verifyClient(info: ConnectionVerificationInfo, callback: ConnectionVerificationCallback): void;
    checkMessageRateLimit(rateLimitKey: string): Promise<boolean>;
    handleConnectionClose(rateLimitKey: string): Promise<void>;
    validatePayloadSize(payload: string | Buffer): boolean;
    validateMessageStructure(message: unknown): {
        valid: boolean;
        error?: string;
    };
    getRateLimitStats(): {
        totalKeys: number;
        activeConnections: number;
        totalMessageCount: number;
    };
    cleanupRateLimitState(): number;
    private extractClientIp;
    private performSecurityChecks;
    private getRateLimitKey;
    private checkRateLimit;
}
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