From e08ee5ab99e86a04aaf4de394501e323e51b3c16 Mon Sep 17 00:00:00 2001
From: qkqpttgf <45693631+qkqpttgf@users.noreply.github.com>
Date: Tue, 15 Sep 2020 15:21:53 +0800
Subject: [PATCH] Create CFWorkers.js

---
 CFWorkers.js | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 CFWorkers.js

diff --git a/CFWorkers.js b/CFWorkers.js
new file mode 100644
index 0000000..767e3e5
--- /dev/null
+++ b/CFWorkers.js
@@ -0,0 +1,63 @@
+
+// odd, 单日
+const SingleDay = 'aaa1.herokuapp.com'
+// even, 双日
+const DoubleDay = 'bbb2.herokuapp.com'
+// CF proxy all, 一切给CF代理，true/false
+const CFproxy = true
+
+// Used in cloudflare workers, odd or even days point to 2 heroku account.
+
+// 由于heroku不绑卡不能自定义域名，就算绑卡后https也不方便
+// 另外免费套餐每月550小时，有些人不够用
+// 于是在CF Workers使用此代码，分单双日拉取不同heroku帐号下的相同网页
+// 只改上面，下面不用动
+
+addEventListener('fetch', event => {
+    let url=new URL(event.request.url);
+    if (url.protocol == 'http:') {
+        url.protocol = 'https:'
+        response = Response.redirect(url.href);
+        event.respondWith( response );
+    }
+    let nd = new Date();
+    if (nd.getDate()%2) {
+        host = SingleDay
+    } else {
+        host = DoubleDay
+    }
+    if (!CFproxy) {
+        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);
+    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;
+}