CloudFlare Workers 反代任意网站和挂载单页代码
发布时间: 2023-02-11 分类: Web开发/Code 热度: 1447
介绍
CloudFlare Workers是一个支持jsproxy的无服务器函数服务，提供全球CDN支持，免费用户有每天10万请求额度；CloudFlare官网：https://dash.cloudflare.com
记录下一些简单的使用方法，以后再陆续更新；
Workers 单页挂载代码
addEventListener('fetch', event => { event.respondWith(handleRequest(event.request))
})
// HTML代码
let html = `<!DOCTYPE html><html> <head><title>Test</title></head> <body><div>Hello world!</div></body></html>`;
/** * Respond to the request * @param {Request} request */
async function handleRequest(request) { return new Response(html, { headers: { 'Content-Type': 'text/html; charset=UTF-8' }, status: 200 })
}Workers 反代任意网站
替换掉其中的www.upx8.com为你需要反代的网址即可；
// Website you intended to retrieve for users.const upstream = 'www.upx8.com'// Custom pathname for the upstream website.const upstream_path = '/'// Website you intended to retrieve for users using mobile devices.const upstream_mobile = 'www.upx8.com'// Countries and regions where you wish to suspend your service.const blocked_region = ['KP', 'SY', 'PK', 'CU']// IP addresses which you wish to block from using your service.const blocked_ip_address = ['0.0.0.0', '127.0.0.1']// Whether to use HTTPS protocol for upstream address.const https = true// Whether to disable cache.const disable_cache = false// Replace texts.const replace_dict = { '$upstream': '$custom_domain', '//www.upx8.com': ''}
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_hostname = url.hostname; if (https == true) { url.protocol = 'https:'; } else { url.protocol = 'http:'; } if (await device_status(user_agent)) { var upstream_domain = upstream; } else { var upstream_domain = upstream_mobile; } url.host = upstream_domain; if (url.pathname == '/') { url.pathname = upstream_path; } else { url.pathname = upstream_path + url.pathname; } 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.protocol + '//' + url_hostname); let original_response = await fetch(url.href, { method: method, headers: new_request_headers }) connection_upgrade = new_request_headers.get("Upgrade"); if (connection_upgrade && connection_upgrade.toLowerCase() == "websocket") { return original_response; } 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; if (disable_cache) { new_response_headers.set('Cache-Control', 'no-store'); } 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'); if (new_response_headers.get("x-pjax-url")) { new_response_headers.set("x-pjax-url", response_headers.get("x-pjax-url").replace("//" + upstream_domain, "//" + url_hostname)); } const content_type = new_response_headers.get('content-type'); if (content_type != null && content_type.includes('text/html') && content_type.includes('UTF-8')) { original_text = await replace_response_text(original_response_clone, upstream_domain, url_hostname); } 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;
}