CodeSampleX

Beispiel

proxy-agent 6.5.0

Verifiziertes Beispiel für npm proxy-agent 6.5.0. Der Vertrag lief auf node 22 · linux alpine/x64 · docker und bestand: exports ProxyAgent constructor and…

sha256:400cb54901edcf84d9f4c3450238ff92751b3eb56a5a60f723f46f06cfbda363

Dieses Netzwerk bietet eine Sache: ein Sample, das baut. Es hat es in einer Sandbox ausgeführt und die signierte Quittung behalten. Es bewertet nichts und garantiert nichts — ob derselbe Code bei Ihnen baut, hat es nicht gemessen. Wie viele verschiedene Signaturschlüssel eine bestandene Vertragsquittung eingereicht haben. Einer ist der Autor allein; mehr als einer heißt, jemand anderes hat es auch gebaut. Ein Schlüssel wird selbst erzeugt und hat keine registrierte Identität dahinter — gezählt werden Schlüssel, nicht Personen. MIT-0

Ausführungsbelege

Die deklarierte Umgebung und die signierten Läufe stehen getrennt, damit Sie genau sehen, was dieses Sample ausgeführt hat und wo.

Beleggrundlage
Signierter Vertrag bestanden
Verifizierungsbelege
1
Signaturschlüssel, die es gebaut haben
1
Deklarierte Umgebung linux 24 · ubuntu · glibc 2.39 x64 npm

Umgebungen der Verifizierungsläufe

Umgebung Contract Stufen Lauf
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-23

Fall

HOW
Ziel
verify pkg:npm/proxy-agent@6.5.0
Pakete
Erstellt
2026-08-23T15:34:21Z

Contract

  1. exports ProxyAgent constructor and proxies mapping
  2. creates a ProxyAgent instance with default http and https agents
  3. supports custom getProxyForUrl routing callback
  4. falls back to direct http and https agents when no proxy is configured for a URL
  5. routes http and socks requests through configured proxy agents
  6. caches created proxy agent instances across multiple requests to identical proxy targets
  7. destroys cached proxy agent instances cleanly on destroy
  8. identifies supported proxy protocols via proxies dictionary

Dateien

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • test/contract.mjs

Quellartefakt herunterladen (tar.gz)

Quelltext

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:npm/proxy-agent@6.5.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/proxy-agent@6.5.0

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:2a2433889a02b941aaec0bb3b2db369cab39d2bd565a03ee752ad667b9de9ed0","contract":["exports ProxyAgent constructor and proxies mapping","creates a ProxyAgent instance with default http and https agents","supports custom getProxyForUrl routing callback","falls back to direct http and https agents when no proxy is configured for a URL","routes http and socks requests through configured proxy agents","caches created proxy agent instances across multiple requests to identical proxy targets","destroys cached proxy agent instances cleanly on destroy","identifies supported proxy protocols via proxies dictionary"],"goal":"verify pkg:npm/proxy-agent@6.5.0","kind":"HOW","packages":["pkg:npm/proxy-agent@6.5.0"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/proxy-agent@6.5.0"],"schemaVersion":1,"subject":"pkg:npm/proxy-agent@6.5.0","verifierAdapter":"node-typescript@1"}
package-lock.json
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}
package.json
{
  "name": "sample-proxy-agent",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of proxy-agent",
  "main": "src/index.js",
  "dependencies": {
    "proxy-agent": "6.5.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/proxy-agent@6.5.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/proxy-agent@6.5.0"
  ]
}
src/index.js
const { ProxyAgent, proxies } = require('proxy-agent');

/**
 * Creates a new ProxyAgent instance with optional configuration.
 *
 * @param {import('proxy-agent').ProxyAgentOptions} [options] - Proxy agent options
 * @returns {ProxyAgent} Configured ProxyAgent instance
 */
function createProxyAgent(options) {
  return new ProxyAgent(options);
}

/**
 * Checks whether a given proxy protocol is supported by ProxyAgent.
 *
 * @param {string} protocol - Proxy protocol scheme (e.g. 'http', 'https', 'socks5')
 * @returns {boolean} True if supported
 */
function isSupportedProxyProtocol(protocol) {
  if (typeof protocol !== 'string') return false;
  const cleanProto = protocol.replace(/:$/, '').toLowerCase();
  return Object.prototype.hasOwnProperty.call(proxies, cleanProto);
}

/**
 * Resolves the underlying agent for a given request via the ProxyAgent instance.
 *
 * @param {ProxyAgent} agent - ProxyAgent instance
 * @param {object} req - Request object with getHeader and path
 * @param {object} [opts] - Connection options (e.g. { secureEndpoint: boolean })
 * @returns {Promise<import('http').Agent>} The underlying agent to use
 */
async function resolveAgent(agent, req, opts = {}) {
  if (!agent || typeof agent.connect !== 'function') {
    throw new TypeError('Expected a valid ProxyAgent instance');
  }
  return agent.connect(req, opts);
}

module.exports = {
  createProxyAgent,
  isSupportedProxyProtocol,
  resolveAgent,
  ProxyAgent,
  proxies
};
test/contract.mjs
import assert from 'node:assert';
import http from 'node:http';
import https from 'node:https';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const {
  createProxyAgent,
  isSupportedProxyProtocol,
  resolveAgent,
  ProxyAgent,
  proxies
} = require('../src/index.js');

// 1. Export verification
assert.strictEqual(typeof ProxyAgent, 'function', 'ProxyAgent should be exported as a constructor function');
assert.strictEqual(typeof proxies, 'object', 'proxies dictionary should be exported');
assert.strictEqual(typeof createProxyAgent, 'function', 'createProxyAgent should be exported as a function');
assert.strictEqual(typeof isSupportedProxyProtocol, 'function', 'isSupportedProxyProtocol should be exported as a function');
assert.strictEqual(typeof resolveAgent, 'function', 'resolveAgent should be exported as a function');

// 2. Default instantiation
const defaultAgent = createProxyAgent();
assert(defaultAgent instanceof ProxyAgent, 'Should instantiate a ProxyAgent');
assert(defaultAgent.httpAgent instanceof http.Agent, 'Should configure default httpAgent');
assert(defaultAgent.httpsAgent instanceof https.Agent, 'Should configure default httpsAgent');
assert.strictEqual(typeof defaultAgent.connect, 'function', 'Should provide connect method');
assert.strictEqual(typeof defaultAgent.destroy, 'function', 'Should provide destroy method');

// 3. Custom routing callback
const routingAgent = createProxyAgent({
  getProxyForUrl: (url) => {
    if (url.includes('proxy-target.example.com')) {
      return 'http://127.0.0.1:8080';
    }
    if (url.includes('socks-target.example.com')) {
      return 'socks5://127.0.0.1:1080';
    }
    return '';
  }
});
assert.strictEqual(typeof routingAgent.getProxyForUrl, 'function', 'Should configure custom getProxyForUrl');

// 4. Fallback to direct agents
const reqDirect = {
  getHeader(name) {
    if (name.toLowerCase() === 'host') return 'direct.example.com';
    return undefined;
  },
  path: '/api/v1/direct'
};

const directHttp = await resolveAgent(routingAgent, reqDirect, { secureEndpoint: false });
assert.strictEqual(directHttp, routingAgent.httpAgent, 'Should return default httpAgent when no proxy matched');

const directHttps = await resolveAgent(routingAgent, reqDirect, { secureEndpoint: true });
assert.strictEqual(directHttps, routingAgent.httpsAgent, 'Should return default httpsAgent when no proxy matched');

// 5. Proxy routing for HTTP and SOCKS
const reqHttpProxy = {
  getHeader(name) {
    if (name.toLowerCase() === 'host') return 'proxy-target.example.com';
    return undefined;
  },
  path: '/api/v1/resource'
};

const proxiedHttp = await resolveAgent(routingAgent, reqHttpProxy, { secureEndpoint: false });
assert(proxiedHttp !== routingAgent.httpAgent, 'Proxied HTTP agent should differ from default direct agent');
assert.strictEqual(proxiedHttp.proxy.origin, 'http://127.0.0.1:8080', 'Proxied HTTP agent should point to proxy URL');

const reqSocksProxy = {
  getHeader(name) {
    if (name.toLowerCase() === 'host') return 'socks-target.example.com';
    return undefined;
  },
  path: '/api/v1/secure-resource'
};

const proxiedSocks = await resolveAgent(routingAgent, reqSocksProxy, { secureEndpoint: true });
assert(proxiedSocks !== routingAgent.httpsAgent, 'Proxied SOCKS agent should differ from default https agent');

// 6. Caching proxy agent instances
const cachedHttp = await resolveAgent(routingAgent, reqHttpProxy, { secureEndpoint: false });
assert.strictEqual(cachedHttp, proxiedHttp, 'Subsequent connect for same target should return cached agent instance');
assert.strictEqual(routingAgent.cache.size, 2, 'Cache contains created proxy agent instances');

// 7. Destroy cleanup
assert.doesNotThrow(() => {
  routingAgent.destroy();
}, 'Destroying ProxyAgent should execute cleanly');

// 8. Supported proxy protocols
assert.strictEqual(isSupportedProxyProtocol('http'), true, 'http protocol should be supported');
assert.strictEqual(isSupportedProxyProtocol('https'), true, 'https protocol should be supported');
assert.strictEqual(isSupportedProxyProtocol('socks5'), true, 'socks5 protocol should be supported');
assert.strictEqual(isSupportedProxyProtocol('pac+http'), true, 'pac+http protocol should be supported');
assert.strictEqual(isSupportedProxyProtocol('ftp'), false, 'ftp protocol should not be supported');
assert.strictEqual(isSupportedProxyProtocol('unknown'), false, 'unknown protocol should not be supported');

console.log('Contract assertions passed.');

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