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

async function handleRequest(request) {
  // 替换为你的服务器IP
  const SERVER_IP = "154.9.228.158";
  
  // 构造新请求
  let url = new URL(request.url);
  url.hostname = SERVER_IP;
  
  return fetch(new Request(url, request));
}