CodeSampleX

Beispiel

pac-proxy-agent 7.2.0: PacProxyAgent

Verifiziertes Beispiel für npm pac-proxy-agent 7.2.0: PacProxyAgent. Der Vertrag lief auf node 22 · linux alpine/x64 · docker und bestand.

sha256:0f34e152a0c2ad4409405bdfd575d4fb871b8d4a67beae38151bdec712971800

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…		 2026-08-27

Fall

HOW
Ziel
verify pac-proxy-agent.PacProxyAgent in pkg:npm/pac-proxy-agent@7.2.0
Pakete
Symbole
  • pac-proxy-agent.PacProxyAgent
Erstellt
2026-08-27T11:32:53Z

Contract

  1. PacProxyAgent instantiates with a PAC URI
  2. PacProxyAgent routes requests DIRECT according to PAC script logic
  3. PacProxyAgent routes requests via PROXY according to PAC script logic

Dateien

  • PROMPT.md
  • README.md
  • csx.json
  • index.mjs
  • package-lock.json
  • package.json
  • spec.json
  • 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 pac-proxy-agent.PacProxyAgent in pkg:npm/pac-proxy-agent@7.2.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/pac-proxy-agent@7.2.0
Demonstrate these symbols/APIs:
  - pac-proxy-agent.PacProxyAgent

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.
README.md
# pac-proxy-agent sample

Demonstrates configuring and using `PacProxyAgent` from `pac-proxy-agent` to route HTTP requests according to PAC (Proxy Auto-Configuration) script logic.
csx.json
{"case":{"caseId":"case:sha256:1f6f73b31270d3f030bbb0720a9580bf5ccf59e91dc1f3e8927198f6abe5899f","contract":["PacProxyAgent instantiates with a PAC URI","PacProxyAgent routes requests DIRECT according to PAC script logic","PacProxyAgent routes requests via PROXY according to PAC script logic"],"goal":"verify pac-proxy-agent.PacProxyAgent in pkg:npm/pac-proxy-agent@7.2.0","kind":"HOW","packages":["pkg:npm/pac-proxy-agent@7.2.0"],"schemaVersion":1,"symbols":["pac-proxy-agent.PacProxyAgent"]},"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/pac-proxy-agent@7.2.0"],"schemaVersion":1,"subject":"pkg:npm/pac-proxy-agent@7.2.0","symbols":["pac-proxy-agent.PacProxyAgent"],"verifierAdapter":"node-typescript@1"}
index.mjs
import http from 'node:http';
import { PacProxyAgent } from 'pac-proxy-agent';

export function createPacAgent(pacScript) {
  const uri = `data:text/javascript;charset=utf-8,${encodeURIComponent(pacScript)}`;
  return new PacProxyAgent(uri);
}

export async function fetchWithPac(url, pacScript) {
  const agent = createPacAgent(pacScript);
  return new Promise((resolve, reject) => {
    http.get(url, { agent }, (res) => {
      let data = '';
      res.on('data', (chunk) => { data += chunk; });
      res.on('end', () => resolve({ statusCode: res.statusCode, data }));
    }).on('error', reject);
  });
}
package-lock.json
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  "name": "sample-pac-proxy-agent",
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  "lockfileVersion": 3,
  "requires": true,
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    "": {
      "name": "sample-pac-proxy-agent",
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        "pac-proxy-agent": "7.2.0"
      }
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      "license": "MIT"
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}
package.json
{
  "name": "sample-pac-proxy-agent",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "pac-proxy-agent": "7.2.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pac-proxy-agent.PacProxyAgent in pkg:npm/pac-proxy-agent@7.2.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/pac-proxy-agent@7.2.0"
  ],
  "symbols": [
    "pac-proxy-agent.PacProxyAgent"
  ]
}
test/contract.mjs
import http from 'node:http';
import assert from 'node:assert';
import { PacProxyAgent } from 'pac-proxy-agent';

async function runContract() {
  const pacCode = `
    function FindProxyForURL(url, host) {
      if (url.indexOf('/direct') !== -1) {
        return 'DIRECT';
      }
      return 'PROXY 127.0.0.1:__PROXY_PORT__';
    }
  `;

  let originHit = 0;
  const originServer = http.createServer((req, res) => {
    originHit++;
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.end('origin-response');
  });

  let proxyHit = 0;
  const proxyServer = http.createServer((req, res) => {
    proxyHit++;
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.end('proxy-response');
  });

  await new Promise((resolve) => originServer.listen(0, '127.0.0.1', resolve));
  await new Promise((resolve) => proxyServer.listen(0, '127.0.0.1', resolve));

  const originPort = originServer.address().port;
  const proxyPort = proxyServer.address().port;

  const resolvedPac = pacCode.replace('__PROXY_PORT__', proxyPort);
  const uri = `data:text/javascript;charset=utf-8,${encodeURIComponent(resolvedPac)}`;

  const agent = new PacProxyAgent(uri);
  assert.ok(agent instanceof PacProxyAgent, 'agent should be an instance of PacProxyAgent');

  const directBody = await new Promise((resolve, reject) => {
    http.get(`http://127.0.0.1:${originPort}/direct`, { agent }, (res) => {
      let data = '';
      res.on('data', (chunk) => { data += chunk; });
      res.on('end', () => resolve(data));
    }).on('error', reject);
  });
  assert.strictEqual(directBody, 'origin-response', 'DIRECT request should reach origin server');
  assert.strictEqual(originHit, 1, 'Origin server should receive 1 direct request');
  assert.strictEqual(proxyHit, 0, 'Proxy server should not receive direct request');

  const proxyBody = await new Promise((resolve, reject) => {
    http.get(`http://127.0.0.1:${originPort}/proxied`, { agent }, (res) => {
      let data = '';
      res.on('data', (chunk) => { data += chunk; });
      res.on('end', () => resolve(data));
    }).on('error', reject);
  });
  assert.strictEqual(proxyBody, 'proxy-response', 'PROXIED request should reach proxy server');
  assert.strictEqual(proxyHit, 1, 'Proxy server should receive 1 proxied request');

  await new Promise((resolve) => originServer.close(resolve));
  await new Promise((resolve) => proxyServer.close(resolve));

  console.log('All PacProxyAgent contract tests passed.');
}

runContract().catch((err) => {
  console.error('Contract test failed:', err);
  process.exit(1);
});

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