EndPoint possible cache test

EndPointCacheTest.cs

using System.Net;
using System.Net.Sockets;

namespace SocketTest
{
    internal class Program
    {
        static void Main (string[] args)
        {
            UdpClient receive = new UdpClient (0);
            Socket receiveSocket = receive.Client;
            EndPoint source = new IPEndPoint (IPAddress.Any, 0);
            byte[] buffer = new byte[256];

            List<EndPoint> endpoints = new List<EndPoint> ();

            new Thread (Send) { IsBackground = true }.Start (receiveSocket.LocalEndPoint);
            new Thread (Send) { IsBackground = true }.Start (receiveSocket.LocalEndPoint);

            while (true)
            {
                EndPoint prevSource = source;
                receiveSocket.ReceiveFrom (buffer, ref source);

                Console.WriteLine ("Received");

                bool found = false;

                foreach (EndPoint endpoint in endpoints)
                {
                    if (ReferenceEquals (endpoint, source))
                    {
                        Console.WriteLine ("Reused EndPoint");
                        found = true;
                        break;
                    }
                }

                if (!found)
                {
                    Console.WriteLine ("New EndPoint");
                    endpoints.Add (source);
                }                  
            }
        }

        private static void Send (object endPointAsObj)
        {
            IPEndPoint endPoint = (IPEndPoint)endPointAsObj;
            
            UdpClient client = new UdpClient ();
            client.Connect ("127.0.0.1", endPoint.Port);
            
            byte[] buffer = new byte[256];
            
            for (int i = 0; i < buffer.Length; i++)
                buffer[i] = (byte)i;

            while (true)
            {
                client.Send (buffer, buffer.Length);
                Console.WriteLine ("Sent");
                Thread.Sleep (100);
            }
        }
    }
}