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

async function handleRequest(request) {
  const SERVER_IP = "154.9.228.158";
  let url = new URL(request.url);
  url.hostname = SERVER_IP;
  url.protocol = "http:"; // 强制HTTP协议（若源站无有效证书）[2](@ref)

  // 重建请求头，覆盖Host和Referer
  const newHeaders = new Headers(request.headers);
  newHeaders.set("Host", SERVER_IP); // 关键：确保源服务器识别请求[3,5](@ref)
  newHeaders.set("Referer", url.href); // 避免防盗链拦截

  // 转发请求并获取响应
  const modifiedRequest = new Request(url, {
    headers: newHeaders,
    method: request.method,
    body: request.body,
    redirect: "follow"
  });

  const response = await fetch(modifiedRequest);
  
  // 修改响应头以允许浏览器渲染
  const modifiedHeaders = new Headers(response.headers);
  modifiedHeaders.set("Access-Control-Allow-Origin", "*"); // 解决跨域阻塞[3](@ref)
  modifiedHeaders.delete("Content-Security-Policy"); // 避免CSP拦截资源加载[3](@ref)
  
  return new Response(response.body, {
    status: response.status,
    headers: modifiedHeaders
  });
}