利用Cloudfare worker反代github

本文主要是介绍利用Cloudfare worker反代github，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

绑定你的域名到 cloudflare

创建一个 worker，并写入如下代码：

// 反代目标网站.
const upstream = 'github.com';// 反代目标网站的移动版.
const upstream_mobile = 'github.com';// 访问区域黑名单（按需设置）.
const blocked_region = [''];// IP地址黑名单（按需设置）.
const blocked_ip_address = ['0.0.0.0', '127.0.0.1'];// 路径替换.
const replace_dict = {'$upstream': '$custom_domain', // 将"$upstream"替换为"$custom_domain"'//github.com': '' // 移除路径中的"//github.com"
};addEventListener('fetch', event => {event.respondWith(fetchAndApply(event.request));
});async function fetchAndApply(request) {const region = request.headers.get('cf-ipcountry').toUpperCase(); // 获取访问者所在的地区const ip_address = request.headers.get('cf-connecting-ip'); // 获取访问者的IP地址const user_agent = request.headers.get('user-agent'); // 获取访问者的User-Agent头部信息let response = null;let url = new URL(request.url);let url_host = url.host;if (url.protocol == 'http:') { // 如果请求协议是HTTP，则重定向到HTTPSurl.protocol = 'https:';response = Response.redirect(url.href);return response;}if (await device_status(user_agent)) { // 判断是否为移动设备var upstream_domain = upstream;} else {var upstream_domain = upstream_mobile;}url.host = upstream_domain;if (blocked_region.includes(region)) { // 检查访问区域是否在黑名单中response = new Response('Access denied: WorkersProxy is not available in your region yet.', {status: 403});} else if (blocked_ip_address.includes(ip_address)){ // 检查IP地址是否在黑名单中response = new Response('Access denied: Your IP address is blocked by WorkersProxy.', {status: 403});} else {let method = request.method;let request_headers = request.headers;let new_request_headers = new Headers(request_headers);new_request_headers.set('Host', upstream_domain); // 设置请求头的Host字段为反代目标网站的域名new_request_headers.set('Referer', url.href); // 设置请求头的Referer字段为当前请求的URLlet original_response = await fetch(url.href, {method: method,headers: new_request_headers});let original_response_clone = original_response.clone();let original_text = null;let response_headers = original_response.headers;let new_response_headers = new Headers(response_headers);let status = original_response.status;// 修改响应头的设置new_response_headers.set('cache-control', 'public, max-age=14400');new_response_headers.set('access-control-allow-origin', '*');new_response_headers.set('access-control-allow-credentials', true);new_response_headers.delete('content-security-policy');new_response_headers.delete('content-security-policy-report-only');new_response_headers.delete('clear-site-data');const content_type = new_response_headers.get('content-type');if (content_type && content_type.includes('text/html') && content_type.includes('UTF-8')) {original_text = await replace_response_text(original_response_clone, upstream_domain, url_host); // 替换响应中的文本内容} else {original_text = original_response_clone.body;}response = new Response(original_text, {status,headers: new_response_headers});}return response;
}async function replace_response_text(response, upstream_domain, host_name) {let text = await response.text();for (let i in replace_dict) {let j = replace_dict[i];if (i == '$upstream') {i = upstream_domain;} else if (i == '$custom_domain') {i = host_name;}if (j == '$upstream') {j = upstream_domain;} else if (j == '$custom_domain') {j = host_name;}let re = new RegExp(i, 'g');text = text.replace(re, j); // 使用正则表达式替换文本内容}return text;
}async function device_status(user_agent_info) {var agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"];var flag = true;for (var v = 0; v < agents.length; v++) {if (user_agent_info.indexOf(agents[v]) > 0) {flag = false;break;}}return flag;
}