转载于 CloudFlare Workers 反代任意网站和挂载单页代码
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
1 addEventListener('fetch', event => { 2 event.respondWith(handleRequest(event.request)) 3 }) 4 5 // HTML代码 6 let html = ` 7 <!DOCTYPE html> 8 <html> 9 <head><title>Test</title></head> 10 <body><div>Hello world!</div></body> 11 </html> 12 `; 13 14 /** 15 * Respond to the request 16 * @param {Request} request 17 */ 18 async function handleRequest(request) { 19 return new Response(html, { 20 headers: { 21 'Content-Type': 'text/html; charset=UTF-8' 22 }, 23 status: 200 24 }) 25 }
Workers 反代任意网站
替换掉其中的sunpma.com为你需要反代的网址即可；
1 // Website you intended to retrieve for users. 2 const upstream = 'sunpma.com' 3 4 // Custom pathname for the upstream website. 5 const upstream_path = '/' 6 7 // Website you intended to retrieve for users using mobile devices. 8 const upstream_mobile = 'sunpma.com' 9 10 // Countries and regions where you wish to suspend your service. 11 const blocked_region = ['KP', 'SY', 'PK', 'CU'] 12 13 // IP addresses which you wish to block from using your service. 14 const blocked_ip_address = ['0.0.0.0', '127.0.0.1'] 15 16 // Whether to use HTTPS protocol for upstream address. 17 const https = true 18 19 // Whether to disable cache. 20 const disable_cache = false 21 22 // Replace texts. 23 const replace_dict = { 24 '$upstream': '$custom_domain', 25 '//sunpma.com': '' 26 } 27 28 addEventListener('fetch', event => { 29 event.respondWith(fetchAndApply(event.request)); 30 }) 31 32 async function fetchAndApply(request) { 33 const region = request.headers.get('cf-ipcountry').toUpperCase(); 34 const ip_address = request.headers.get('cf-connecting-ip'); 35 const user_agent = request.headers.get('user-agent'); 36 37 let response = null; 38 let url = new URL(request.url); 39 let url_hostname = url.hostname; 40 41 if (https == true) { 42 url.protocol = 'https:'; 43 } else { 44 url.protocol = 'http:'; 45 } 46 47 if (await device_status(user_agent)) { 48 var upstream_domain = upstream; 49 } else { 50 var upstream_domain = upstream_mobile; 51 } 52 53 url.host = upstream_domain; 54 if (url.pathname == '/') { 55 url.pathname = upstream_path; 56 } else { 57 url.pathname = upstream_path + url.pathname; 58 } 59 60 if (blocked_region.includes(region)) { 61 response = new Response('Access denied: WorkersProxy is not available in your region yet.', { 62 status: 403 63 }); 64 } else if (blocked_ip_address.includes(ip_address)) { 65 response = new Response('Access denied: Your IP address is blocked by WorkersProxy.', { 66 status: 403 67 }); 68 } else { 69 let method = request.method; 70 let request_headers = request.headers; 71 let new_request_headers = new Headers(request_headers); 72 73 new_request_headers.set('Host', upstream_domain); 74 new_request_headers.set('Referer', url.protocol + '//' + url_hostname); 75 76 let original_response = await fetch(url.href, { 77 method: method, 78 headers: new_request_headers 79 }) 80 81 connection_upgrade = new_request_headers.get("Upgrade"); 82 if (connection_upgrade && connection_upgrade.toLowerCase() == "websocket") { 83 return original_response; 84 } 85 86 let original_response_clone = original_response.clone(); 87 let original_text = null; 88 let response_headers = original_response.headers; 89 let new_response_headers = new Headers(response_headers); 90 let status = original_response.status; 91 92 if (disable_cache) { 93 new_response_headers.set('Cache-Control', 'no-store'); 94 } 95 96 new_response_headers.set('access-control-allow-origin', '*'); 97 new_response_headers.set('access-control-allow-credentials', true); 98 new_response_headers.delete('content-security-policy'); 99 new_response_headers.delete('content-security-policy-report-only'); 100 new_response_headers.delete('clear-site-data'); 101 102 if (new_response_headers.get("x-pjax-url")) { 103 new_response_headers.set("x-pjax-url", response_headers.get("x-pjax-url").replace("//" + upstream_domain, "//" + url_hostname)); 104 } 105 106 const content_type = new_response_headers.get('content-type'); 107 if (content_type != null && content_type.includes('text/html') && content_type.includes('UTF-8')) { 108 original_text = await replace_response_text(original_response_clone, upstream_domain, url_hostname); 109 } else { 110 original_text = original_response_clone.body 111 } 112 113 response = new Response(original_text, { 114 status, 115 headers: new_response_headers 116 }) 117 } 118 return response; 119 } 120 121 async function replace_response_text(response, upstream_domain, host_name) { 122 let text = await response.text() 123 124 var i, j; 125 for (i in replace_dict) { 126 j = replace_dict[i] 127 if (i == '$upstream') { 128 i = upstream_domain 129 } else if (i == '$custom_domain') { 130 i = host_name 131 } 132 133 if (j == '$upstream') { 134 j = upstream_domain 135 } else if (j == '$custom_domain') { 136 j = host_name 137 } 138 139 let re = new RegExp(i, 'g') 140 text = text.replace(re, j); 141 } 142 return text; 143 } 144 145 146 async function device_status(user_agent_info) { 147 var agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"]; 148 var flag = true; 149 for (var v = 0; v < agents.length; v++) { 150 if (user_agent_info.indexOf(agents[v]) > 0) { 151 flag = false; 152 break; 153 } 154 } 155 return flag; 156 }