如果没有TcpSocket，如何使用SSLStream

using System;
using System.Net.Security;
using System.Net.Sockets;
using System.Security.Authentication;
using System.Security.Cryptography.X509Certificates;
using System.Text;

public class SslStreamExample
{
    public static void Main()
    {
        // 创建TcpClient对象并连接到服务器
        TcpClient client = new TcpClient("server.example.com", 443);

        // 获取NetworkStream对象
        NetworkStream networkStream = client.GetStream();

        // 创建SslStream对象，并将NetworkStream对象作为参数传递
        SslStream sslStream = new SslStream(networkStream);

        try
        {
            // 进行SSL/TLS握手并进行身份验证
            sslStream.AuthenticateAsClient("server.example.com");

            // 发送和接收数据
            byte[] buffer = Encoding.UTF8.GetBytes("Hello, server!");
            sslStream.Write(buffer, 0, buffer.Length);

            buffer = new byte[4096];
            int bytesRead = sslStream.Read(buffer, 0, buffer.Length);
            string response = Encoding.UTF8.GetString(buffer, 0, bytesRead);
            Console.WriteLine("Server response: " + response);
        }
        catch (AuthenticationException e)
        {
            Console.WriteLine("Authentication failed: " + e.Message);
        }
        finally
        {
            // 关闭连接
            sslStream.Close();
            client.Close();
        }
    }
}