create a udp server on a specific port in csharp

main.cs
using System;
using System.Net;
using System.Net.Sockets;

class UDPServer
{
    private const int PORT = 1234; // the port number you want to listen on

    static void Main(string[] args)
    {
        // create a new UdpClient that will listen on the specified port
        UdpClient udpServer = new UdpClient(PORT);

        try
        {
            while (true)
            {
                Console.WriteLine("Waiting for client datagram...");
                // wait for a client to send a datagram
                IPEndPoint clientEndpoint = new IPEndPoint(IPAddress.Any, 0);
                byte[] clientDatagram = udpServer.Receive(ref clientEndpoint);
                Console.WriteLine($"Received datagram from {clientEndpoint}: {clientDatagram.Length} bytes");

                // process the datagram here...

                // send a response back to the client
                byte[] serverResponse = new byte[] { 0x01, 0x02, 0x03 };
                udpServer.Send(serverResponse, serverResponse.Length, clientEndpoint);
                Console.WriteLine($"Sent response to {clientEndpoint}: {serverResponse.Length} bytes");
            }
        }
        catch (Exception e)
        {
            Console.WriteLine($"Error occurred: {e}");
        }
        finally
        {
            udpServer.Close();
        }
    }
}
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