import { Address, GSNConfig, GsnTransactionDetails, HttpClient, LoggerInterface, PartialRelayInfo, PingFilter, RelayInfoUrl, RelaySelectionResult, WaitForSuccessResults } from '@opengsn/common';
import { KnownRelaysManager } from './KnownRelaysManager';
export declare class RelaySelectionManager {
    private readonly knownRelaysManager;
    private readonly httpClient;
    private readonly config;
    private readonly logger;
    private readonly pingFilter;
    private readonly gsnTransactionDetails;
    private remainingRelays;
    private isInitialized;
    errors: Map<string, Error>;
    constructor(gsnTransactionDetails: GsnTransactionDetails, knownRelaysManager: KnownRelaysManager, httpClient: HttpClient, pingFilter: PingFilter, logger: LoggerInterface, config: GSNConfig);
    /**
     * Ping those relays that were not pinged yet, and remove both the returned relay or relays re from {@link remainingRelays}
     * @returns the first relay to respond to a ping message. Note: will never return the same relay twice.
     */
    selectNextRelay(relayHub: Address, paymaster?: Address): Promise<RelaySelectionResult | undefined>;
    _nextRelayInternal(relays: RelayInfoUrl[], relayHub: Address, paymaster?: Address): Promise<RelaySelectionResult | undefined>;
    init(): Promise<this>;
    relaysLeft(): RelayInfoUrl[];
    _getNextSlice(): RelayInfoUrl[];
    /**
     * @returns JSON response from the relay server, but adds the requested URL to it :'-(
     */
    _getRelayAddressPing(relayInfo: RelayInfoUrl, relayHub: Address, paymaster?: Address): Promise<PartialRelayInfo>;
    _waitForSuccess(relays: RelayInfoUrl[], relayHub: Address, paymaster?: Address): Promise<WaitForSuccessResults<PartialRelayInfo>>;
    _handleWaitForSuccessResults(raceResult: WaitForSuccessResults<PartialRelayInfo>, skippedRelays: string[], winner?: PartialRelayInfo): void;
    selectWinnerFromResult(allPingResults: WaitForSuccessResults<PartialRelayInfo>): {
        winner?: RelaySelectionResult;
        skippedRelays: string[];
    };
    /**
     * Pick a random relay among those that satisfy the original client gas fees parameters.
     */
    selectWinnerWithoutAdjustingFees(allPingResults: WaitForSuccessResults<PartialRelayInfo>): RelaySelectionResult | undefined;
    /**
     * Here we attempt to save the Relay Request attempt and avoid raising an exception in the client code.
     * As these Relay Servers did not agree to our suggested gas fees, we cannot rely on Random to pick a winner.
     * Pick Relay Servers deterministically with the closest gas fees instead.
     */
    selectWinnerByAdjustingFees(allPingResults: WaitForSuccessResults<PartialRelayInfo>): {
        winner?: RelaySelectionResult;
        skippedRelays: string[];
    };
}