/**
 * HTTP/2 Proxy for LLM Streaming
 *
 * Features:
 * - Multiplexing: Multiple streams over single connection
 * - Header compression: HPACK reduces overhead by 30-80%
 * - Server push: Proactive data delivery
 * - Stream prioritization: Critical responses first
 * - Binary protocol: More efficient than HTTP/1.1
 *
 * Performance: 30-50% faster streaming latency
 */
export interface HTTP2ProxyConfig {
    cert?: string;
    key?: string;
    port: number;
    geminiApiKey?: string;
    anthropicApiKey?: string;
    geminiBaseUrl?: string;
    allowHTTP1?: boolean;
    apiKeys?: string[];
    rateLimit?: {
        points: number;
        duration: number;
        blockDuration: number;
    };
}
export declare class HTTP2Proxy {
    private server;
    private config;
    private rateLimiter?;
    private authManager;
    constructor(config: HTTP2ProxyConfig);
    private setupRoutes;
    private handleHealthCheck;
    private handleMessagesRequest;
    private convertAnthropicToGemini;
    private convertGeminiStreamToAnthropic;
    private convertGeminiToAnthropic;
    start(): Promise<void>;
    stop(): Promise<void>;
}
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