之前寫過幾篇文章說到，關於透過 API TOKEN 去修改 Cloudflare 的 DNS 紀錄 ，有時候在 Cloudflare 有點麻煩的是 如果修改一張圖片會因為有 cloudflare CDN cache 的問題，這是好事也是壞事，之後我想到一個方法，就是如果在準備修改之前，當然你可以設計在進入到客戶在進入管理後台的時候，偷偷的先打開 development mode ，反正開始後三小時會關閉 development code 機制，這樣也是一個好方法，這樣就可以閃躲 cache 問題…
首先你要先去 https://dash.cloudflare.com/profile/api-tokens ，產生一個 token 記得這次產生的時候要先選 Edit Zone DNS 
之後這兩個參數也要開
不然你會遇到 回應訊息 是這樣的錯誤
"{"success":false,"errors":[{"code":9109,"message":"Unauthorized to access requested resource"}],"messages":[],"result":null}"
1. 查看 是否開啟 Development Mode
我整理得很簡單，直接看 Code
HttpClient clientGetZones = new HttpClient();
clientGetZones.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
clientGetZones.DefaultRequestHeaders.Add("Authorization", " Bearer API_TOKEN");
var url1 = "https://api.cloudflare.com/client/v4/zones/023e105f4ecef8ad9ca31a8372d0c353/settings/development_mode";
/*
curl -X GET "https://api.cloudflare.com/client/v4/zones/023e105f4ecef8ad9ca31a8372d0c353/settings/development_mode" \
-H "X-Auth-Email: user@example.com" \
-H "X-Auth-Key: c2547eb745079dac9320b638f5e225cf483cc5cfdda41" \
-H "Content-Type: application/json"
*/
/*
Response Result
{
"success": true,
"errors": [],
"messages": [],
"result": {
"id": "development_mode",
"value": "off",
"editable": true,
"modified_on": "2014-01-01T05:20:00.12345Z",
"time_remaining": 3600
}
}
*/
var res = clientGetZones.GetAsync(url1).Result.Content.ReadAsStringAsync().Result;
// true for open , false for close
var isOpenDeveloperMode=JObject.Parse(res)["result"]["value"].ToString()!= "off";
2. 開啟或是關閉 ，這裡面就是切換 on or off
HttpClient clientGetZones = new HttpClient();
clientGetZones.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
clientGetZones.DefaultRequestHeaders.Add("Authorization", " Bearer API_TOKEN");
var url1 = "https://api.cloudflare.com/client/v4/zones/023e105f4ecef8ad9ca31a8372d0c353/settings/development_mode";
/*
curl -X PATCH "https://api.cloudflare.com/client/v4/zones/023e105f4ecef8ad9ca31a8372d0c353/settings/development_mode" \
-H "X-Auth-Email: user@example.com" \
-H "X-Auth-Key: c2547eb745079dac9320b638f5e225cf483cc5cfdda41" \
-H "Content-Type: application/json" \
--data '{"value":"off"}'
*/
HttpRequestMessage requestMessage = new HttpRequestMessage(new HttpMethod("PATCH"), url1);
// For Close Dev Mode.
//requestMessage.Content = new StringContent("{\"value\":\"off\"}", Encoding.UTF8, "application/json");
// For Open Dev Mode.
requestMessage.Content = new StringContent("{\"value\":\"on\"}", Encoding.UTF8, "application/json");
HttpResponseMessage response = clientGetZones.SendAsync(requestMessage).GetAwaiter().GetResult();
var res = response.Content.ReadAsStringAsync().Result.ToString();
//Response :
//{"result":{"id":"development_mode","value":"on","modified_on":"2020-11-27T08:36:27.345871Z","time_remaining":10800,"editable":true},"success":true,"errors":[],"messages":[]}
整理一下，因為有需要所以筆記一下給需要的人，也怕我自己忘記…
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本文原文首發於我的個人部落格：透過程式 查看/開啟/關閉 Cloudflare Development Mode
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Yesterday I wrote down the code. I bet I could be your hero. I am a mighty little programmer.
