Turn to federated plugin

packages/moxdns_platform_interface/lib/moxdns_platform_interface.dart

@@ -0,0 +1,24 @@
+import "package:plugin_platform_interface/plugin_platform_interface.dart";
+
+class SrvRecord {
+  final String target;
+  final int port;
+  final int priority;
+  final int weight;
+
+  const SrvRecord(
+    this.target, 
+    this.port,
+    this.priority,
+    this.weight
+  );
+}
+
+abstract class MoxdnsPlatform extends PlatformInterface {
+  static final Object _token = Object();
+
+  MoxdnsPlatform() : super(token: _token);
+
+  /// Perform the SRV query for [domain]. Use DNSSEC if [dnssec] is true.
+  Future<List<SrvRecord>> srvQuery(String domain, bool dnssec);
+}