function handleRequest(request) {
  // 通过 request.eo.clientIp 获取客户端 IP
  const ip = request.eo.clientIp || '';
  
  // 响应 JSON 数据
  return new Response(JSON.stringify({ ip }), {
    headers: { 'content-type': 'application/json' },
  });
}

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request));
});