通过Cloudflare Workers反代，实现网站单双日负载均衡
通过Cloudflare Workers反代，实现网站单双日负载均衡
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// 单日
const SingleDay = 'example_1.com'
// 双日
const DoubleDay = 'example_2.com'
// 一切给CF代理，true/false
const CFproxy = true
// 只改上面，下面不用动
addEventListener('fetch', event => {
let nd = new Date();
if (nd.getDate()%2) {
host = SingleDay
} else {
host = DoubleDay
}
if (!CFproxy) {
let url=new URL(event.request.url);
if (url.protocol == 'http:') {
url.protocol = 'https:'
response = Response.redirect(url.href);
event.respondWith( response );
} else {
url.hostname=host;
let request=new Request(url,event.request);
event.respondWith( fetch(request) )
}
} else {
event.respondWith( fetchAndApply(event.request) );
}
})
async function fetchAndApply(request) {
let response = null;
let url = new URL(request.url);
if (url.protocol == 'http:') {
url.protocol = 'https:'
response = Response.redirect(url.href);
return response;
}
url.host = host;
let method = request.method;
let body = request.body;
let request_headers = request.headers;
let new_request_headers = new Headers(request_headers);
new_request_headers.set('Host', url.host);
new_request_headers.set('Referer', request.url);
let original_response = await fetch(url.href, {
method: method,
body: body,
headers: new_request_headers
});
response = new Response(original_response.body, {
status: original_response.status,
headers: original_response.headers
})
return response;
}
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