在两个客户端C#之间发送消息

我有一个服务器，它允许我连接多个客户端。接收来自客户端的消息，并在连接时向每个客户端发送消息。我想做的是从客户端向另一个客户端发送消息，所以服务器应该做的就是从第一个客户端获取消息并发送到另一个。我该怎么做？

这是服务器的代码

class Server 
{ 
    private TcpListener tcpListener; private Thread listenThread;
    public Server()
    {
        this.tcpListener = new TcpListener(IPAddress.Any, 3000);
        this.listenThread = new Thread(new ThreadStart(ListenForClients));
        this.listenThread.Start();
    }
    private void ListenForClients()
    {
        this.tcpListener.Start();
        while (true)
        {
            //blocks until a client has connected to the server
            TcpClient client = this.tcpListener.AcceptTcpClient();
            //create a thread to handle communication 
            //with connected client
            Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
            clientThread.Start(client);
        }
    }
    private void HandleClientComm(object client)
    {
        TcpClient tcpClient = (TcpClient)client;
        NetworkStream clientStream = tcpClient.GetStream();
        byte[] message = new byte[4096];
        int bytesRead = 0;
        try
        {
            //blocks until a client sends a message
            bytesRead = clientStream.Read(message, 0, 4096);
        }
        catch (Exception ex)
        {
            //a socket error has occured
            Console.WriteLine(ex.Message);
        }
        if (bytesRead == 0)
        {
            //the client has disconnected from the server
        }
        //message has successfully been received
        ASCIIEncoding encoder = new ASCIIEncoding();
        Console.WriteLine(encoder.GetString(message, 0, bytesRead));
        byte[] buffer = encoder.GetBytes("Hello Client!");
        clientStream.Write(buffer, 0, buffer.Length);
        clientStream.Flush();
        tcpClient.Close();
    }
    static void Main(string[] args)
    {
        new Server();
    }
}

和客户端

{
    TcpClient client = new TcpClient();
    IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 3000);
    client.Connect(serverEndPoint);
    NetworkStream clientStream = client.GetStream();
    ASCIIEncoding encoder = new ASCIIEncoding();
    byte[] buffer = encoder.GetBytes("Hello Server!");
    clientStream.Write(buffer, 0, buffer.Length);
    clientStream.Flush();
    //message has successfully been received
    byte[] message = new byte[4096];
    int bytesRead;
    bytesRead = 0;
    try
    {
        //blocks until a client sends a message
        bytesRead = clientStream.Read(message, 0, 4096);
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
    }
    Console.WriteLine(encoder.GetString(message, 0, bytesRead));
    Console.ReadLine();
}

List<TcpClient> connectedClients = new List<TcpClient>();
private void ListenForClients()
    {
        this.tcpListener.Start();
        while (true)
        {
            //blocks until a client has connected to the server
            TcpClient client = this.tcpListener.AcceptTcpClient();
            connectedClients.Add(client);
            //create a thread to handle communication 
            //with connected client
            Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
            clientThread.Start(client);
        }
    }