diff --git a/.gitignore b/.gitignore
index 5ff6309..ba492f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,4 +35,5 @@ build/
 .vscode/
 
 ### Mac OS ###
-.DS_Store
\ No newline at end of file
+.DS_Store
+/.idea/encodings.xml
diff --git a/src/main/java/lion/CustomUtil.java b/src/main/java/lion/CustomUtil.java
index a10b556..07b71ee 100644
--- a/src/main/java/lion/CustomUtil.java
+++ b/src/main/java/lion/CustomUtil.java
@@ -5,6 +5,8 @@ import cn.hutool.http.HttpResponse;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.Data;
 
+import java.io.IOException;
+import java.net.ServerSocket;
 import java.util.concurrent.atomic.AtomicInteger;
 
 
@@ -25,4 +27,15 @@ public class CustomUtil {
             }
         }
     }
+
+    public static int _findIdlePort(int port) {
+        for(int i=port; i<65535; i++){
+            try(ServerSocket ignored = new ServerSocket(i)){
+                ignored.close();
+                return  i;
+            }catch (IOException ignored) {
+            }
+        }
+        return -1;
+    }
 }