问EO的边缘函数图像处理avoidSizeIncrease导致返回空？

提问于 2026-08-13 15:37:43

回答 0关注 0查看 5

函数代码如下, 这里的 avoidSizeIncrease 一旦设置为 true，并且请求头包含 webp 或者 avif，就会返回空

Status

200

Headers

accept-ranges: bytes
age: 296
cache-control: max-age=31536000
connection: close
content-length: 0
content-type: application/octet-stream
date: Thu, 13 Aug 2026 07:34:42 GMT
eo-cache-status: MISS
eo-log-uuid: 16151242162754019088
last-modified: Thu, 13 Aug 2026 07:34:42 GMT
nel: {"success_fraction":0.1,"report_to":"eo-nel","max_age":604800}
report-to: {"endpoints":[{"url":"https://nel.teo-rum.com/eo-cgi/nel"}],"group":"eo-nel","max_age":604800}
server: edgeone-pages
x-nws-log-uuid: 16151242162754019088

Body

""

async function handleEvent(event) {
  const { request } = event;
  
  const option = {
    eo: {
      image: {
        avoidSizeIncrease: true,
      }
    }
  };

  // 获取客户端支持的图片类型
  const accept = request.headers.get('Accept');
  if (accept) {
    if (accept.includes('image/avif')) {
      option.eo.image.format = 'avif';
    } else if (accept.includes('image/webp')) {
      option.eo.image.format = 'webp';
    }
  }

 
  try {  
    return fetch(request, option);
  } catch (error) {
    // 如果处理失败，回退到原始请求
    console.error(`Image processing failed: ${error}`);
    return fetch(request);
  }
}


addEventListener('fetch', (event) => {
  event.passThroughOnException();
  event.respondWith(handleEvent(event));
});

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