C# Winform使用wss加密websocket

using System;
using System.Windows.Forms;
using Fleck;
using System.Security.Cryptography.X509Certificates;
using System.Collections.Generic;
namespace WindowsFormsApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
        List<IWebSocketConnection> users;
        WebSocketServer server;
        private void button1_Click(object sender, EventArgs e)
        {
            button1.Enabled = false;
            listBox1.Items.Add(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "-启动WebSocket");
            users = new List<IWebSocketConnection>();//存储所有连接的socket对象
            server = new WebSocketServer("wss://0.0.0.0:19999");
            server.Certificate = new System.Security.Cryptography.X509Certificates.X509Certificate2(@"D:\内部\reservation.w3dev.cn\cert\reservation.w3dev.cn.pfx", "证书密码"
                , X509KeyStorageFlags.Exportable | X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet
                 );
            server.EnabledSslProtocols = System.Security.Authentication.SslProtocols.Tls12;
            server.RestartAfterListenError = true;
            server.Start(socket =>
            {
                socket.OnOpen = () =>
                {//连接成功加入队列
                    users.Add(socket);
                };
                socket.OnClose = () =>
                {//客户端关闭
                    users.Remove(socket);
                };
                socket.OnMessage = message =>
                {
                    this.Invoke(new Action(()=> {
                        listBox1.Items.Add(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "-" + message);
                    }) );
                    foreach (var item in users) item.Send("服务器端回发信息-" + message);
                };
            });
        }
    }
}