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EdgeAdmin/web/views/@default/httpdns/apps/docs/ios.md

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+# iOS SDK
+
+## 初始化
+
+```objc
+HttpdnsEdgeService *service = [[HttpdnsEdgeService alloc]
+    initWithAppId:@"app1f1ndpo9"
+primaryServiceHost:@"httpdns-a.example.com"
+ backupServiceHost:@"httpdns-b.example.com"
+        servicePort:443
+         signSecret:@"your-sign-secret"];
+```
+
+## 解析
+
+```objc
+[service resolveHost:@"api.business.com" queryType:@"A" completion:^(HttpdnsEdgeResolveResult * _Nullable result, NSError * _Nullable error) {
+    // result.ipv4s / result.ipv6s
+}];
+```
+
+## 官方业务适配器
+
+```objc
+NSURL *url = [NSURL URLWithString:@"https://api.business.com/v1/ping"];
+[service requestURL:url method:@"GET" headers:nil body:nil completion:^(NSData * _Nullable data, NSHTTPURLResponse * _Nullable response, NSError * _Nullable error) {
+    // handle
+}];
+```
+
+固定策略：IP 直连 + 空 SNI + Host=真实域名，不回退到带 SNI。