CloudFlare是国外一家知名的cdn服务商,Workers-Proxy是基于Cloudflare Workers的轻量级Javascript 反向代理。 用户可以在Cloudflare的全球网络上部署反向代理,而无需设置虚拟专用服务器和配置Nginx或Apache。
通过配置地区和 IP 过滤器,你可以根据法律规定在部分国家和地区停用反向代理服务。借助移动端跳转工具,你可以根据用户的设备来分发不同的网站。
Workers特点:
1、建立镜像网站
2、利用Cloudflare的全球网络提高加载速度
3、提高安全性(隐藏网站的IP地址)阻止特定区域或IP地址
4、将移动用户重定向到其他网页
创建就很简单了,就不介绍了,这里分享2个版本的Workers反代代码。
第一个:
- // 替换成你想镜像的站点
- const upstream = ‘www.google.com’
- // 如果那个站点有专门的移动适配站点,否则保持和上面一致
- const upstream_mobile = ‘www.google.com’
- // 你希望禁止哪些国家访问
- const blocked_region = [‘RU’]
- // 禁止自访问
- const blocked_ip_address = [‘0.0.0.0’, ‘127.0.0.1’]
- // 替换成你想镜像的站点
- const replace_dict = {
- ‘$upstream’: ‘$custom_domain’,
- ‘//www.google.com’: ”
- }
- //以下内容都不用动
- addEventListener(‘fetch’, event => {
- event.respondWith(fetchAndApply(event.request));
- })
- async function fetchAndApply(request) {
- const region = request.headers.get(‘cf-ipcountry’).toUpperCase();
- const ip_address = request.headers.get(‘cf-connecting-ip’);
- const user_agent = request.headers.get(‘user-agent’);
- let response = null;
- let url = new URL(request.url);
- let url_host = url.host;
- if (url.protocol == ‘http:’) {
- url.protocol = ‘https:’
- response = Response.redirect(url.href);
- return response;
- }
- if (await device_status(user_agent)) {
- upstream_domain = upstream
- } else {
- upstream_domain = upstream_mobile
- }
- url.host = upstream_domain;
- if (blocked_region.includes(region)) {
- response = new Response(‘Access denied: WorkersProxy is not available in your region yet.’, {
- status: 403
- });
- } else if(blocked_ip_address.includes(ip_address)){
- 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);
- new_request_headers.set(‘Referer’, url.href);
- let 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;
- 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.includes(‘text/html’) && content_type.includes(‘UTF-8’)) {
- original_text = await replace_response_text(original_response_clone, upstream_domain, url_host);
- } 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()
- var i, j;
- for (i in replace_dict) {
- 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);
- }
- 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;
- }
第二个:
- // 替换成你想镜像的站点
- const upstream = ‘google.com’
- // 如果那个站点有专门的移动适配站点,否则保持和上面一致
- const upstream_mobile = ‘m.google.com’
- // 密码访问
- const openAuth = false
- const username = ‘username’
- const password = ‘password’
- // 你希望禁止哪些国家访问
- const blocked_region = [‘RU’]
- // 禁止自访问
- const blocked_ip_address = [‘0.0.0.0’, ‘127.0.0.1’]
- // 替换成你想镜像的站点
- const replace_dict = {
- ‘$upstream’: ‘$custom_domain’,
- ‘//google.com’: ”
- }
- function unauthorized() {
- return new Response(‘Unauthorized’, {
- headers: {
- ‘WWW-Authenticate’: ‘Basic realm=”goindex”‘,
- ‘Access-Control-Allow-Origin’: ‘*’
- },
- status: 401
- });
- }
- function parseBasicAuth(auth) {
- try {
- return atob(auth.split(‘ ‘).pop()).split(‘:’);
- } catch (e) {
- return [];
- }
- }
- function doBasicAuth(request) {
- const auth = request.headers.get(‘Authorization’);
- if (!auth || !/^Basic [A-Za-z0-9._~+/-]+=*$/i.test(auth)) {
- return false;
- }
- const [user, pass] = parseBasicAuth(auth);
- return user === username && pass === password;
- }
- async function fetchAndApply(request) {
- if (request.method === ‘OPTIONS’) // allow preflight request
- return new Response(”, {
- status: 200,
- headers: {
- ‘Access-Control-Allow-Origin’: ‘*’,
- ‘Access-Control-Allow-Headers’: ‘*’,
- ‘Access-Control-Allow-Methods’: ‘GET, POST, PUT, HEAD, OPTIONS’
- }
- });
- if (openAuth && !doBasicAuth(request)) {
- return unauthorized();
- }
- const region = request.headers.get(‘cf-ipcountry’).toUpperCase();
- const ip_address = request.headers.get(‘cf-connecting-ip’);
- const user_agent = request.headers.get(‘user-agent’);
- let response = null;
- let url = new URL(request.url);
- let url_host = url.host;
- if (url.protocol == ‘http:’) {
- url.protocol = ‘https:’
- response = Response.redirect(url.href);
- return response;
- }
- if (await device_status(user_agent)) {
- upstream_domain = upstream
- } else {
- upstream_domain = upstream_mobile
- }
- url.host = upstream_domain;
- if (blocked_region.includes(region)) {
- response = new Response(‘Access denied: WorkersProxy is not available in your region yet.’, {
- status: 403
- });
- } else if(blocked_ip_address.includes(ip_address)){
- 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);
- new_request_headers.set(‘Referer’, url.href);
- let 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;
- 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.includes(‘text/html’) && content_type.includes(‘UTF-8’)) {
- original_text = await replace_response_text(original_response_clone, upstream_domain, url_host);
- } else {
- original_text = original_response_clone.body
- }
- response = new Response(original_text, {
- status,
- headers: new_response_headers
- })
- }
- return response;
- }
- addEventListener(‘fetch’, event => {
- event.respondWith(fetchAndApply(event.request).catch(err => {
- console.error(err);
- new Response(JSON.stringify(err.stack), {
- status: 500,
- headers: {
- ‘Content-Type’: ‘application/json’
- }
- });
- }));
- })
- async function replace_response_text(response, upstream_domain, host_name) {
- let text = await response.text()
- var i, j;
- for (i in replace_dict) {
- 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);
- }
- 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;
- }
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