加入注册失败重试

lib/base/discovery/impl/NacosDiscovery.dart

@@ -17,6 +17,7 @@ class NacosDiscovery implements Discovery {
   @override
   Future<bool> registerInstance(String serviceName, String ip, int port,
       {String groupName = 'DEFAULT_GROUP'}) async {
+    bool register = false;
     try {
       //获取本机网卡ip
       String? nip;
@@ -84,15 +85,20 @@ class NacosDiscovery implements Discovery {
         //     return;
         //   }
         // });
-        return true;
+        register = true;
       } else {
         print('服务注册失败: ${response.statusCode} - ${response.data}');
-        return false;
       }
     } catch (e) {
       print('请求失败: $e');
-      return false;
     }
+    if (!register) {
+      //延迟两秒继续请求
+      await Future.delayed(Duration(seconds: 2));
+      return await registerInstance(serviceName, ip, port,
+          groupName: groupName);
+    }
+    return register;
   }
 
   // 注销实例