Как занести сокет, который подключается к серверу, в массив - C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Net;
 
namespace Server
{
    class Program
    {
        static List<Socket> sockets;
        static void Main()
        {
            
            Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            server.Bind(new IPEndPoint(IPAddress.Any, 5080));
            server.Listen(100);
 
            server.BeginAccept(ConnectCallback, server);
 
            string input;
            Console.WriteLine("Type 'exit' to quit");
            while ((input = Console.ReadLine().ToLower()) != "exit") ;
        }
 
        static void ConnectCallback(IAsyncResult iar)
        {

            Socket server = (Socket)iar.AsyncState;
            
            try
            {
                Socket client = server.EndAccept(iar);
                Console.WriteLine("Новый клиент: {0}", client.RemoteEndPoint);
                AsyncState state = new AsyncState { socket = client, buffer = new byte[client.ReceiveBufferSize] };
                client.BeginReceive(state.buffer, 0, state.buffer.Length, SocketFlags.None, ReceiveCallback, state);
            }
            catch (SocketException e)
            {
                Console.WriteLine("Error accepting connection: {0}", e.Message);
            }
            server.BeginAccept(ConnectCallback, server);
        }
 
        static void ReceiveCallback(IAsyncResult iar)
        {
            AsyncState state = (AsyncState)iar.AsyncState;
            try
            {
                int recv = state.socket.EndReceive(iar);
                if (recv == 0)
                {
                    Console.WriteLine("Client {0} has closed connection", state.socket.RemoteEndPoint);
                    state.socket.Close();
                }
                else
                {
                    string text = Encoding.UTF8.GetString(state.buffer, 0, recv);
                    Console.WriteLine("{0}: {1}", state.socket.RemoteEndPoint, text);
 
                    byte[] answer = Encoding.UTF8.GetBytes("Сервер принял сообщение...");
                    state.socket.BeginSend(answer, 0, answer.Length, SocketFlags.None ,SendCallback, state);
                }
            }
            catch (SocketException e)
            {
                Console.WriteLine("Error receiving from {0}: {1}", state.socket.RemoteEndPoint, e.Message);
                state.socket.Close();
            }
        }
 
        static void SendCallback(IAsyncResult iar)
        {
            AsyncState state = (AsyncState)iar.AsyncState;
            try
            {
                int sent = state.socket.EndSend(iar);
 
                for (int i = 0; i < sockets.ToArray().Length; i++)
                {
                    sockets[i].BeginSend(state.buffer, 0, state.buffer.Length, SocketFlags.None, ReceiveCallback, state);
                    //state.socket.BeginReceive(state.buffer, 0, state.buffer.Length, SocketFlags.None, ReceiveCallback, state);
                }
            }
            catch (SocketException e)
            {
                Console.WriteLine("Error sending to {0}: {1}", state.socket.RemoteEndPoint, e.Message);
                state.socket.Close();
            }
        }
    }
 
    struct AsyncState
    {
        public Socket socket;
        public byte[] buffer;
    }
}