更新标准库UDP等

Ramitta/Ramitta.cs

@@ -344,13 +344,32 @@ namespace Ramitta.lib
         #endregion
 
         // 通过 UDP 发送消息
-        public static void SendUdpMessage(string _serverIp, int _serverPort,string message)
+        public static void SendUdpMessage(string _serverIp, int _serverPort, string message)
         {
             try
             {
                 using (UdpClient udpClient = new UdpClient())
                 {
-                    IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse(_serverIp), _serverPort);
+                    IPEndPoint endPoint;
+
+                    // 真正的自动识别：先尝试解析为IP地址，失败则当作域名处理
+                    if (IPAddress.TryParse(_serverIp, out IPAddress ipAddress))
+                    {
+                        // 输入的是IP地址
+                        endPoint = new IPEndPoint(ipAddress, _serverPort);
+                    }
+                    else
+                    {
+                        // 输入的是域名，进行DNS解析
+                        IPAddress[] addresses = Dns.GetHostAddresses(_serverIp);
+                        if (addresses.Length == 0)
+                        {
+                            Debug.WriteLine($"无法解析域名: {_serverIp}");
+                            return;
+                        }
+                        endPoint = new IPEndPoint(addresses[0], _serverPort);
+                    }
+
                     byte[] messageBytes = Encoding.UTF8.GetBytes(message);
                     udpClient.Send(messageBytes, messageBytes.Length, endPoint);
                 }