Function waitForServer

Example/e2etest/e2e/globalSetup.ts:125–157

(timeoutMs = 30000)

}

function waitForServer(timeoutMs = 30000) {
  const start = Date.now();
  const url = `http://127.0.0.1:${LOCAL_UPDATE_PORT}/health`;

  return new Promise<void>((resolve, reject) => {
    const poll = () => {
      const req = http.get(url, res => {
        if (res.statusCode === 200) {
          resolve();
          return;
        }
        retry();
      });
      req.on('error', retry);
      req.setTimeout(1000, () => {
        req.destroy();
        retry();
      });
    };

    const retry = () => {
      if (Date.now() - start > timeoutMs) {
        reject(
          new Error('Local artifacts server did not become ready in time.'),
        );
        return;
      }
      setTimeout(poll, 300);
    };

    poll();
  });
}

function sleep(ms: number) {
  return new Promise(resolve => setTimeout(resolve, ms));