A:全局Common的公共定义

Common/Utils/SysHelper.cs

@@ -0,0 +1,23 @@
+using System.Net;
+using System.Net.Sockets;
+
+namespace Application.Utils;
+
+/// <summary>
+/// 
+/// </summary>
+public static class SysHelper
+{
+    /// <summary>
+    /// 获取可用端口
+    /// </summary>
+    /// <returns></returns>
+    public static int GetAvailablePort()
+    {
+        TcpListener listener = new TcpListener(IPAddress.Loopback, 0); // 端口号为0表示由系统自动分配
+        listener.Start();
+        int port = ((IPEndPoint)listener.LocalEndpoint).Port;
+        listener.Stop();
+        return port;
+    }
+}