96 lines
2.9 KiB
Markdown
96 lines
2.9 KiB
Markdown
---
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title: 【开源】Cloudflare优选IP➕DnsPod的DDNS自动切换
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date: 2024-08-27 15:24:10
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categories: Code
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tags:
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- Cloudflare
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- 优选IP
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- DnsPod
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- DDNS
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id: cloudflare-ip-dnspod-ddns
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cover: https://i0.wp.com/uxiaohan.github.io/v2/2024/08/1724744026.webp
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recommend: true
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---
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:::note
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CloudFlare是一个非常优秀的CDN服务，但是CloudFlare也有一个大的毛病——大陆访问速度很慢。国外很多网站都在使用 Cloudflare CDN，但分配给中国内地访客的IP并不友好（延迟高、丢包多、速度慢）。
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虽然Cloudflare公开了所有IP段，但想要在这么多IP中找到适合自己的，怕是要累死，于是就有了这个脚本。
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:::
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## Cloudflare优选IP 每隔15分钟更新(IPv6+IPv4)
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### 项目地址
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::btn[CloudflareIP-dnspod-ddns]{link="https://github.com/uxiaohan/CloudflareIP-dnspod-ddns"}
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### 优化后示例站点
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::btn[点击体验]{link="https://cf.vvhan.com/"}
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## 实现逻辑及局部代码
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### 获取优选IP
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```js
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const res = await fetch("https://api.vvhan.com/tool/cf_ip");
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const data = await res.json();
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// 数据格式
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// {
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// "success": true,
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// "data": {
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// "v4": {
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// "CM": [],
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// "CU": [],
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// "CT": []
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// },
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// "v6": {
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// "CM": [],
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// "CU": [],
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// "CT": []
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// }
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// }
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// }
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```
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### 取优选IP中的最优选 (延迟比较)
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```js
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// 取最优选IP IPv4
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const CM_IP_V4 = data.v4.CM.reduce((minItem, currentItem) => {
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return currentItem.latency < minItem.latency ? currentItem : minItem;
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}, data.v4.CM[0]);
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const CU_IP_V4 = data.v4.CU.reduce((minItem, currentItem) => {
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return currentItem.latency < minItem.latency ? currentItem : minItem;
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}, data.v4.CU[0]);
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const CT_IP_V4 = data.v4.CT.reduce((minItem, currentItem) => {
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return currentItem.latency < minItem.latency ? currentItem : minItem;
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}, data.v4.CT[0]);
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const DNS_DATA_V4 = { 移动: CM_IP_V4.ip, 联通: CM_IP_V4.ip, 电信: CU_IP_V4.ip, 默认: CT_IP_V4.ip };
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// 取最优选IP IPv6
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const CM_IP_V6 = data.v6.CM.reduce((minItem, currentItem) => {
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return currentItem.latency < minItem.latency ? currentItem : minItem;
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}, data.v6.CM[0]);
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const CU_IP_V6 = data.v6.CU.reduce((minItem, currentItem) => {
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return currentItem.latency < minItem.latency ? currentItem : minItem;
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}, data.v6.CU[0]);
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const CT_IP_V6 = data.v6.CT.reduce((minItem, currentItem) => {
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return currentItem.latency < minItem.latency ? currentItem : minItem;
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}, data.v6.CT[0]);
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const DNS_DATA_V6 = { 移动: CM_IP_V6.ip, 联通: CM_IP_V6.ip, 电信: CU_IP_V6.ip, 默认: CT_IP_V6.ip };
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```
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### 循环替换优选IP
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```js
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DnsPodDomainList.forEach(async i => {
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try {
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const res = await client.ModifyRecord({ Domain, RecordType: i.Type, RecordLine: "", RecordLineId: i.LineId, Value: i.Type == "A" ? DNS_DATA_V4[i.Line] : DNS_DATA_V6[i.Line], RecordId: i.RecordId, SubDomain });
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console.log(res);
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} catch (error) {
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console.log(error);
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}
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});
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```
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