/// <reference types="node" />
import { TransportContext } from "./context/transport";
import { DtlsContext } from "./context/dtls";
import { CipherContext } from "./context/cipher";
import { Transport } from "./transport";
import { Extension } from "./typings/domain";
import { SrtpContext } from "./context/srtp";
export declare type Options = {
    transport: Transport;
    srtpProfiles?: number[];
    cert?: string;
    key?: string;
    certificateRequest?: boolean;
};
export declare class DtlsSocket {
    options: Options;
    isClient: boolean;
    onConnect: () => void;
    onData: (buf: Buffer) => void;
    onClose: () => void;
    udp: TransportContext;
    dtls: DtlsContext;
    cipher: CipherContext;
    srtp: SrtpContext;
    extensions: Extension[];
    constructor(options: Options, isClient: boolean);
    private setupExtensions;
    send(buf: Buffer): void;
    close(): void;
    extractSessionKeys(): {
        localKey: any;
        localSalt: any;
        remoteKey: any;
        remoteSalt: any;
    };
    exportKeyingMaterial(label: string, length: number): Buffer;
}