C#开发 vnc server 完整示例

以下是一个基于C#的VNC服务器的示例代码：

using System;
using System.Net;
using System.Net.Sockets;
using System.Threading;

namespace VNCServer
{
    class Program
    {
        static void Main(string[] args)
        {
            var listener = new TcpListener(IPAddress.Any, 5900);
            listener.Start();

            while (true)
            {
                Console.WriteLine("Waiting for client connection...");
                var client = listener.AcceptTcpClient();
                Console.WriteLine("Client connected!");

                var thread = new Thread(() => HandleClient(client));
                thread.Start();
            }
        }

        private static void HandleClient(TcpClient client)
        {
            var stream = client.GetStream();

            // Send protocol version
            stream.WriteByte(0x52); // RFB Protocol version 3.8
            stream.WriteByte(0x46);
            stream.WriteByte(0x42);
            stream.WriteByte(0x20);

            // Send security types
            stream.WriteByte(1); // Number of security types supported
            stream.WriteByte(1); // Security type: None

            // Send authentication result
            var result = stream.ReadByte();
            if (result != 1)
            {
                Console.WriteLine("Client authentication failed");
                client.Close();
                return;
            }

            // Send server initialization
            stream.WriteByte(0); // Framebuffer width
            stream.WriteByte(0);
            stream.WriteByte(0); // Framebuffer height
            stream.WriteByte(0);
            stream.WriteByte(8); // Pixel format bpp
            stream.WriteByte(0); // Depth
            stream.WriteByte(0); // Big endian flag
            stream.WriteByte(1); // True color flag
            stream.WriteByte(0); // Red max
            stream.WriteByte(255); // Red max
            stream.WriteByte(0); // Green max
            stream.WriteByte(255); // Green max
            stream.WriteByte(0); // Blue max
            stream.WriteByte(255); // Blue max
            stream.WriteByte(16); // Red shift
            stream.WriteByte(8); // Green shift
            stream.WriteByte(0); // Blue shift
            stream.WriteByte(0); // Padding
            stream.WriteByte(0); // Padding
            stream.WriteByte(0); // Padding

            // Send framebuffer update
            stream.WriteByte(0); // Message type: FramebufferUpdate
            stream.WriteByte(0);
            stream.WriteByte(0); // Padding
            stream.WriteByte(0);
            stream.WriteByte(0); // Number of rectangles

            client.Close();
        }
    }
}

该示例代码使用TCP监听端口5900，等待客户端连接。一旦客户端连接，它将发送协议版本、安全类型、身份验证结果、服务器初始化和帧缓冲区更新。在这个示例中，服务器只支持“无”身份验证类型，并且帧缓冲区大小为0x0000。这只是一个最基本的示例，可以根据需要进行修改和扩展。