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/*---------------------------------------------------------------------------------------------
networkDiagnosticsService.ts
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { lookup } from 'dns';
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import { streamToBuffer } from '../../../base/common/buffer.js';
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import { CancellationToken } from '../../../base/common/cancellation.js';
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import { IConfigurationService } from '../../configuration/common/configuration.js';
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import { createDecorator } from '../../instantiation/common/instantiation.js';
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import { ILogService } from '../../log/common/log.js';
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import { IProductService } from '../../product/common/productService.js';
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import { IRequestService, NO_FETCH_TELEMETRY } from '../../request/common/request.js';
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import { IAgentHostDnsResult, IAgentHostNetworkDiagnosticsInfo, IAgentHostNetworkEndpoint, IAgentHostNetworkFetchResult } from '../common/agentService.js';
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import { IAgentHostProxyResolver } from './agentHostProxyResolver.js';
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export const INetworkDiagnosticsService = createDecorator<INetworkDiagnosticsService>('networkDiagnosticsService');
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/**
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* Owns agent-host network connectivity diagnostics: host-level network context
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* ({@link getInfo}) and the per-URL reachability probe ({@link fetch}). Split
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* out from {@link IAgentService} so the network stack dependencies
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* ({@link IRequestService}, {@link IAgentHostProxyResolver}) are injected here
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* rather than threaded through the session orchestrator.
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*/
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export interface INetworkDiagnosticsService {
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readonly _serviceBrand: undefined;
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/** Host-level network context: version, OS/arch, account, proxy settings/env, and endpoints worth probing. */
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getInfo(endpoints: readonly IAgentHostNetworkEndpoint[], account?: string): Promise<IAgentHostNetworkDiagnosticsInfo>;
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/** Probe connectivity from the agent host process to a single `url`. */
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fetch(url: string): Promise<IAgentHostNetworkFetchResult>;
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}
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/** Per-probe timeout: DNS lookup and the reachability request each get this long. */
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const PROBE_TIMEOUT_MS = 10_000;
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/** Cap on the response body returned to callers (for expected-content checks), to bound the IPC payload. */
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const MAX_BODY_CHARS = 64 * 1024;
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/**
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* Proxy-related environment variables surfaced in the diagnostics report so a
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* mismatch between the OS/config proxy and an explicit env override is visible.
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*/
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const PROXY_ENV_KEYS = ['HTTPS_PROXY', 'https_proxy', 'HTTP_PROXY', 'http_proxy', 'ALL_PROXY', 'all_proxy', 'NO_PROXY', 'no_proxy'] as const;
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/** VS Code `http.*` proxy settings surfaced alongside the env vars. */
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const PROXY_CONFIG_KEYS = ['http.proxy', 'http.proxyStrictSSL', 'http.proxySupport', 'http.noProxy'] as const;
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export class NetworkDiagnosticsService implements INetworkDiagnosticsService {
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declare readonly _serviceBrand: undefined;
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constructor(
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@IRequestService private readonly _requestService: IRequestService,
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@IAgentHostProxyResolver private readonly _proxyResolver: IAgentHostProxyResolver,