import { PeerId, PeerInfo } from '../PeerInfo';
import { DisconnectionCode, DisconnectionReason } from './AbstractWsEndpoint';
export declare const HIGH_BACK_PRESSURE: number;
export declare const LOW_BACK_PRESSURE: number;
export type ReadyState = 0 | 1 | 2 | 3;
export declare abstract class AbstractWsConnection {
    private readonly peerInfo;
    private readonly logger;
    private respondedPong;
    private rtt?;
    private rttStart?;
    private highBackPressure;
    private onLowBackPressure?;
    private onHighBackPressure?;
    protected constructor(peerInfo: PeerInfo);
    setBackPressureHandlers(onLowBackPressure: () => void, onHighBackPressure: () => void): void | never;
    ping(): void;
    onPong(): void;
    evaluateBackPressure(): void;
    getPeerInfo(): PeerInfo;
    getRespondedPong(): boolean;
    getRtt(): number | undefined;
    getPeerId(): PeerId;
    getDiagnosticInfo(): Record<string, unknown>;
    abstract sendPing(): void;
    abstract getBufferedAmount(): number;
    abstract send(message: string): Promise<void>;
    abstract terminate(): void;
    abstract getReadyState(): ReadyState;
    abstract close(code: DisconnectionCode, reason: DisconnectionReason): void;
}