import { CancellationToken } from "../../../base/common/cancellation.js";
import { Disposable } from "../../../base/common/lifecycle.js";
import { IRequestContext, IRequestOptions } from "../../../base/parts/request/common/request.js";
import { ILogService } from "../../log/common/log.service.js";
import { IRequestService } from "./request.service.js";
/**
 * Use as the {@link IRequestOptions.callSite} value to prevent
 * request telemetry from being emitted. This is needed for
 * callers such as the telemetry sender to avoid cyclical calls.
 */
export declare const NO_FETCH_TELEMETRY = "NO_FETCH_TELEMETRY";
export interface IRequestCompleteEvent {
    readonly callSite: string;
    readonly latency: number;
    readonly statusCode: number | undefined;
}
export interface AuthInfo {
    isProxy: boolean;
    scheme: string;
    host: string;
    port: number;
    realm: string;
    attempt: number;
}
export interface Credentials {
    username: string;
    password: string;
}
export declare abstract class AbstractRequestService extends Disposable implements IRequestService {
    protected readonly logService: ILogService;
    readonly _serviceBrand: undefined;
    private counter;
    private readonly _onDidCompleteRequest;
    readonly onDidCompleteRequest: import("../../../base/common/event.js").Event<IRequestCompleteEvent>;
    constructor(logService: ILogService);
    protected logAndRequest(options: IRequestOptions, request: () => Promise<IRequestContext>): Promise<IRequestContext>;
    abstract request(options: IRequestOptions, token: CancellationToken): Promise<IRequestContext>;
    abstract resolveProxy(url: string): Promise<string | undefined>;
    abstract lookupAuthorization(authInfo: AuthInfo): Promise<Credentials | undefined>;
    abstract lookupKerberosAuthorization(url: string): Promise<string | undefined>;
    abstract loadCertificates(): Promise<string[]>;
}
export declare function isSuccess(context: IRequestContext): boolean;
export declare function isClientError(context: IRequestContext): boolean;
export declare function isServerError(context: IRequestContext): boolean;
export declare function hasNoContent(context: IRequestContext): boolean;
export declare function asText(context: IRequestContext): Promise<string | null>;
export declare function asTextOrError(context: IRequestContext): Promise<string | null>;
export declare function asJson<T = {}>(context: IRequestContext): Promise<T | null>;
export declare function updateProxyConfigurationsScope(useHostProxy: boolean, useHostProxyDefault: boolean): void;
export declare const USER_LOCAL_AND_REMOTE_SETTINGS: string[];
export declare const systemCertificatesNodeDefault = false;