广告验证代理：查看本地用户看到的广告

import { chromium } from "playwright";

// Node 18+, npm i playwright. Run: node check.mjs https://example.com/landing
// Gateway and credentials come from your dashboard. Targeting is written on the
// username: USER-country-de or USER-country-de-city-berlin on both products.
const url = process.argv[2];
const proxy = {
  server: process.env.PROXY_SERVER, // e.g. http://YOUR_HOST:8080
  username: process.env.PROXY_USER, // e.g. USER-country-de-city-berlin-session-ad01
  password: process.env.PROXY_PASS,
};

const browser = await chromium.launch({ proxy });
try {
  const context = await browser.newContext({ recordHar: { path: "check.har" } });
  const page = await context.newPage();

  // Preflight: record the exit the ad server will see before loading the target.
  const exit = await (await page.goto("https://httpbin.org/ip")).json();

  const navigations = [];
  page.on("framenavigated", (frame) => {
    if (frame === page.mainFrame()) navigations.push(frame.url());
  });

  const response = await page.goto(url, { waitUntil: "networkidle" });
  const httpRedirects = [];
  for (let request = response?.request(); request; request = request.redirectedFrom()) {
    httpRedirects.unshift(request.url());
  }

  await page.screenshot({ path: "check.png", fullPage: true });
  console.log(JSON.stringify({
    checkedAt: new Date().toISOString(),
    exit,
    url,
    status: response?.status(),
    httpRedirects,
    navigations,
    finalUrl: page.url(),
  }, null, 2));

  await context.close(); // writes check.har
} finally {
  await browser.close();
}