Function startMockServer

e2e/server-fixtures.ts:134–255

()

 * 所有响应都带 Access-Control-Allow-Origin: *。CSP 目标主机额外下发严格 CSP 头。
 */
export async function startMockServer(): Promise<MockServer> {
  const requestLog: RequestRecord[] = [];
  const pathHitCount = new Map<string, number>();
  const failingPaths = new Set<string>();

  const handler = (req: IncomingMessage, res: ServerResponse) => {
    const hostHeader = req.headers.host || "127.0.0.1";
    const hostNoPort = hostHeader.split(":")[0];
    const url = new URL(req.url || "/", `http://${hostHeader}`);
    const pathname = url.pathname;

    requestLog.push({
      method: req.method || "GET",
      host: hostNoPort,
      path: req.url || "/",
      pathname,
      headers: req.headers as Record<string, string | string[] | undefined>,
    });
    pathHitCount.set(pathname, (pathHitCount.get(pathname) || 0) + 1);

    res.setHeader("Access-Control-Allow-Origin", "*");
    res.setHeader("Access-Control-Allow-Headers", "*");
    res.setHeader("Access-Control-Expose-Headers", "*");

    if (req.method === "OPTIONS") {
      res.writeHead(204);
      res.end();
      return;
    }

    if (failingPaths.has(pathname)) {
      res.writeHead(500, { "Content-Type": "text/plain" });
      res.end("mock failure");
      return;
    }

    if (pathname === "/lib.js") {
      const version = pathHitCount.get(pathname) || 1;
      const token = url.searchParams.get("token") || "";
      res.writeHead(200, { "Content-Type": "application/javascript; charset=utf-8" });
      res.end(`window.__LIB_VERSION__ = ${version};\nwindow.__LIB_TOKEN__ = ${JSON.stringify(token)};\n`);
      return;
    }

    if (pathname === "/lib2.js") {
      res.writeHead(200, { "Content-Type": "application/javascript; charset=utf-8" });
      res.end(`window.__LIB2_OK__ = true;\n`);
      return;
    }

    if (pathname === "/res.txt") {
      res.writeHead(200, { "Content-Type": "text/plain; charset=utf-8" });
      res.end("RESOURCE_OK");
      return;
    }

    if (pathname === "/xhr") {
      res.writeHead(200, { "Content-Type": "application/json" });