init csharp server

server/src/UdpClientPool.cs

@@ -0,0 +1,41 @@
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+
+class UDPClientPool
+{
+    private static IPAddress localhost = IPAddress.Parse("127.0.0.1");
+
+    public UDPClientPool()
+    {
+
+    }
+
+    public static void SendLocalHost(int port, string[] stringArray)
+    {
+        Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+
+        byte[] sendbuf = Encoding.ASCII.GetBytes(stringArray[0]);
+        IPEndPoint ep = new IPEndPoint(localhost, port);
+
+        socket.SendTo(sendbuf, ep);
+    }
+
+    public static void CycleSendLocalHost(int times, int sleepMilliSeconds, int port, string[] stringArray)
+    {
+        Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+        byte[] sendbuf = Encoding.ASCII.GetBytes(stringArray[0]);
+        IPEndPoint ep = new IPEndPoint(localhost, port);
+
+        while (times-- >= 0)
+        {
+            socket.SendTo(sendbuf, ep);
+
+            Thread.Sleep(sleepMilliSeconds);
+        }
+    }
+
+    public void Start()
+    {
+    }
+}