加速GitHub上release软件包的下载的方法

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需要自己搭建环境：

1. 打开cloudflare主页后，选择Workers

2. 创建worker

   

3. 将框中代码删除替换成如下代码后，点击部署即可。（该源码的Github地址）

   

addEventListener('fetch', event => {
    event.respondWith(handleRequest(event.request).catch((err) => { return new Response(err.message) }))
})

const html = `
  
  
  
  

  
  
注:该工具只针对直链有效
  
  `;

/**
 * Respond to the request
 * @param {Request} request
 */
async function handleRequest(request) {

    if (request.method === 'OPTIONS' && request.headers.has('access-control-request-headers')) {
        return new Response(null, {
            status: 204,
            headers: new Headers({
                'access-control-allow-origin': '*',
                'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS',
                'access-control-allow-headers': '*',
                'access-control-max-age': '1728000'
            }),
        })
    }
    let req_url = new URL(request.url);
    if (req_url.pathname.startsWith('/ajax/')) {//ajax
        let url = req_url.pathname.slice(6).replace(/^(https?):\/+/, '$1://');
        if (!url) return new Response("Only For Ajax");
        let res = await fetch(url, { method: request.method, headers: request.headers, body: request.body });
        let h = new Headers(res.headers);
        h.set('access-control-allow-origin', '*');
        h.set('access-control-expose-headers', '*');
        return new Response(res.body, { status: res.status, headers: h });
    } else if (req_url.pathname === '/') {//download
        let url = req_url.searchParams.get('url');
        if (!url) return new Response(html, { status: 200, headers: { 'Content-Type': 'text/html; charset=utf-8' } });
        let res;
        if (request.headers.get('Range')) {
            res = await fetch(url, { headers: { 'Range': request.headers.get('Range') } });
        } else {
            res = await fetch(url);
        }
        let h = new Headers(res.headers);
        h.set('set-cookie', '');
        h.set('access-control-allow-origin', '*');
        h.set('access-control-expose-headers', '*');
        return new Response(res.body, {
            status: res.status,
            headers: h,
        })
    } else {
        return new Response("400 --", { status: 400, headers: { 'Content-Type': 'text/html; charset=utf-8' } });
    }
}

4. 保存并部署成功后，点击小箭头打开网页

   

5. 输入链接即可下载。