C# socket TCP 通信

Server:

void Main()
{
    var maxWaitingRequest = 10;
    var localSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    localSocket.Bind(new IPEndPoint(IPAddress.Any, 40000));
    localSocket.Listen(maxWaitingRequest);
    while (true)
    {
        var remoteSocket = localSocket.Accept();
        var remoteIP = (IPEndPoint)remoteSocket.RemoteEndPoint;
        Console.WriteLine("A new connection from {0}:{1} at {2}", remoteIP.Address.ToString(), remoteIP.Port.ToString(), DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
        ThreadPool.QueueUserWorkItem(acceptedConnectionHandler, remoteSocket);
    }
}

static void acceptedConnectionHandler(object p)
{
    var remoteSocket = (Socket)p;
    remoteSocket.Send(System.Text.Encoding.Default.GetBytes("Hi client!"));
    
    var data = new List<byte>();
    var dataBlock = new byte[1024];
    while (true)
    {
        var read = remoteSocket.Receive(dataBlock);
        data.AddRange(dataBlock.Take(read));
        if (read <= dataBlock.Length && data.Count > 0)
        {
            Console.WriteLine(System.Text.Encoding.Default.GetString(data.ToArray()));
            data.Clear();
        }
    }
}

Client:

void Main()
{
    var localSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    var localEP = new IPEndPoint(IPAddress.Any, 20000);
    localSocket.Bind(localEP);
    localSocket.Connect(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 40000));
    ThreadPool.QueueUserWorkItem(connectedConnectionHandler,localSocket);
    while(true)
        Thread.Sleep(100);
}

public static void connectedConnectionHandler(object p)
{
    var localSocket = (Socket)p;
    var data = new List<byte>();
    var dataBlock = new byte[1024];
    while (true)
    {
        var read = localSocket.Receive(dataBlock);
        data.AddRange(dataBlock.Take(read));
        if (read <= dataBlock.Length && data.Count > 0)
        {
            Console.WriteLine(System.Text.Encoding.Default.GetString(data.ToArray()));
            data.Clear();
            localSocket.Send(System.Text.Encoding.Default.GetBytes("Hi server!"));
        }
    }
}