今天这篇文章,分享一下利用cloudflare workers自建一个API,来实现GitHub文件加速。之前分享过国内 GitHub 下载加速技巧分享,分享了2篇文章,如下:
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GitHub 下载速度慢?国内 GitHub 下载加速技巧分享
Github Action离线下载项目至坚果云WebDAV网盘
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1、简介
github release、archive以及项目文件的加速项目,支持clone,有Cloudflare Workers无服务器版本以及Python版本
项目:https://github.com/hunshcn/gh-proxy
演示:https://cf.fdao.xyz/
2、准备
1)自备一个cloudflare账号(如何申请略过)
2)最好准备好一个域名,二级、三级域名都可以。
3、部署
1)新建worker
2)在脚本框中粘贴代码
代码:https://github.com/hunshcn/gh-proxy/blob/master/index.js
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'use strict'/** * static files (404.html, sw.js, conf.js) */const ASSET_URL = 'https://hunshcn.github.io/gh-proxy'// 前缀,如果自定义路由为example.com/gh/*,将PREFIX改为 '/gh/',注意,少一个杠都会错!const PREFIX = '/'// git使用cnpmjs镜像、分支文件使用jsDelivr镜像的开关,0为关闭,默认开启const Config = { jsdelivr: 1, cnpmjs: 1}/** @type {RequestInit} */const PREFLIGHT_INIT = { status: 204, headers: new Headers({ 'access-control-allow-origin': '*', 'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS', 'access-control-max-age': '1728000', }),}/** * @param {any} body * @param {number} status * @param {Object<string, string>} headers */function makeRes(body, status = 200, headers = {}) { headers['access-control-allow-origin'] = '*' return new Response(body, {status, headers})}/** * @param {string} urlStr */function newUrl(urlStr) { try { return new URL(urlStr) } catch (err) { return null }}addEventListener('fetch', e => { const ret = fetchHandler(e) .catch(err => makeRes('cfworker error:\n' + err.stack, 502)) e.respondWith(ret)})/** * @param {FetchEvent} e */async function fetchHandler(e) { const req = e.request const urlStr = req.url const urlObj = new URL(urlStr) let path = urlObj.searchParams.get('q') if (path) { return Response.redirect('https://' + urlObj.host + PREFIX + path, 301) } // cfworker 会把路径中的 `//` 合并成 `/` path = urlObj.href.substr(urlObj.origin.length + PREFIX.length).replace(/^https?:\/+/, 'https://') const exp1 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:releases|archive)\/.*$/i const exp2 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:blob)\/.*$/i const exp3 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:info|git-).*$/i const exp4 = /^(?:https?:\/\/)?raw\.githubusercontent\.com\/.+?\/.+?\/.+?\/.+$/i if (path.search(exp1) === 0 || !Config.cnpmjs && (path.search(exp3) === 0 || path.search(exp4) === 0)) { return httpHandler(req, path) } else if (path.search(exp2) === 0) { if (Config.jsdelivr){const newUrl = path.replace('/blob/', '@').replace(/^(?:https?:\/\/)?github\.com/, 'https://cdn.jsdelivr.net/gh')return Response.redirect(newUrl, 302) }else{path = path.replace('/blob/', '/raw/')return httpHandler(req, path) } } else if (path.search(exp3) === 0) { const newUrl = path.replace(/^(?:https?:\/\/)?github\.com/, 'https://github.com.cnpmjs.org') return Response.redirect(newUrl, 302) } else if (path.search(exp4) === 0) { const newUrl = path.replace(/(?<=com\/.+?\/.+?)\/(.+?\/)/, '@$1').replace(/^(?:https?:\/\/)?raw\.githubusercontent\.com/, 'https://cdn.jsdelivr.net/gh') return Response.redirect(newUrl, 302) } else { return fetch(ASSET_URL + path) }}/** * @param {Request} req * @param {string} pathname */function httpHandler(req, pathname) { const reqHdrRaw = req.headers // preflight if (req.method === 'OPTIONS' && reqHdrRaw.has('access-control-request-headers') ) { return new Response(null, PREFLIGHT_INIT) } let rawLen = '' const reqHdrNew = new Headers(reqHdrRaw) let urlStr = pathname if (urlStr.startsWith('github')) { urlStr = 'https://' + urlStr } const urlObj = newUrl(urlStr) /** @type {RequestInit} */ const reqInit = { method: req.method, headers: reqHdrNew, redirect: 'follow', body: req.body } return proxy(urlObj, reqInit, rawLen, 0)}/** * * @param {URL} urlObj * @param {RequestInit} reqInit */async function proxy(urlObj, reqInit, rawLen) { const res = await fetch(urlObj.href, reqInit) const resHdrOld = res.headers const resHdrNew = new Headers(resHdrOld) // verify if (rawLen) { const newLen = resHdrOld.get('content-length') || '' const badLen = (rawLen !== newLen) if (badLen) {return makeRes(res.body, 400, { '--error': `bad len: ${newLen}, except: ${rawLen}`, 'access-control-expose-headers': '--error',}) } } const status = res.status resHdrNew.set('access-control-expose-headers', '*') resHdrNew.set('access-control-allow-origin', '*') resHdrNew.delete('content-security-policy') resHdrNew.delete('content-security-policy-report-only') resHdrNew.delete('clear-site-data') return new Response(res.body, { status, headers: resHdrNew, })}
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3)保存并部署
上面的代码粘贴后,点击保存并部署即可。红框的地方可以点击预览。
4、添加路由(设置一个域名访问)
1)选择你事先准备好的域名,并进入管理,之后点击workers。
2)添加路由
3)添加要给解析(设置占位)
在DNS管理处,添加一个A解析,地址:8.8.8.8
5、演示以及使用方法
1)效果
2)使用
GitHub文件链接带不带协议头都可以,支持release、archive以及文件,右键复制出来的链接都是符合标准的。
release、archive使用cf加速,文件会跳转至JsDelivr
注意,不支持项目文件夹
符合规范的使用如下:
分支源码:https://github.com/hunshcn/project/archive/master.zip
release源码:https://github.com/hunshcn/project/archive/v0.1.0.tar.gz
release文件:https://github.com/hunshcn/project/releases/download/v0.1.0/example.zip
分支文件:https://github.com/hunshcn/project/blob/master/filename
6、最后
如果平时偶尔用用,可以使用别人搭建好的,如果用的很多,那么自建比较稳。
Cloudflare Workers免费套餐的每天10万请求数,足够你折腾了。
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