I have no clue what I am doing

.gitignore

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+.vs/
+*/bin/
+*/obj/

DummyWinUI/App.xaml

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+<?xml version="1.0" encoding="utf-8"?>
+<Application
+    x:Class="DummyWinUI.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:DummyWinUI">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
+                <!-- Other merged dictionaries here -->
+            </ResourceDictionary.MergedDictionaries>
+            <!-- Other app resources here -->
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>

DummyWinUI/App.xaml.cs

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+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Controls.Primitives;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Input;
+using Microsoft.UI.Xaml.Media;
+using Microsoft.UI.Xaml.Navigation;
+using Microsoft.UI.Xaml.Shapes;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Windows.ApplicationModel;
+using Windows.ApplicationModel.Activation;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+
+// To learn more about WinUI, the WinUI project structure,
+// and more about our project templates, see: http://aka.ms/winui-project-info.
+
+namespace DummyWinUI
+{
+    /// <summary>
+    /// Provides application-specific behavior to supplement the default Application class.
+    /// </summary>
+    public partial class App : Application
+    {
+        private Window? _window;
+
+        /// <summary>
+        /// Initializes the singleton application object.  This is the first line of authored code
+        /// executed, and as such is the logical equivalent of main() or WinMain().
+        /// </summary>
+        public App()
+        {
+            InitializeComponent();
+        }
+
+        /// <summary>
+        /// Invoked when the application is launched.
+        /// </summary>
+        /// <param name="args">Details about the launch request and process.</param>
+        protected override void OnLaunched(Microsoft.UI.Xaml.LaunchActivatedEventArgs args)
+        {
+            _window = new MainWindow();
+            _window.Activate();
+        }
+    }
+}

DummyWinUI/DummyWinUI.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>
+    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <RootNamespace>DummyWinUI</RootNamespace>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <Platforms>x86;x64;ARM64</Platforms>
+    <RuntimeIdentifiers>win-x86;win-x64;win-arm64</RuntimeIdentifiers>
+    <PublishProfile>win-$(Platform).pubxml</PublishProfile>
+    <UseWinUI>true</UseWinUI>
+    <WinUISDKReferences>false</WinUISDKReferences>
+    <EnableMsixTooling>true</EnableMsixTooling>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Content Include="Assets\SplashScreen.scale-200.png" />
+    <Content Include="Assets\LockScreenLogo.scale-200.png" />
+    <Content Include="Assets\Square150x150Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Content Include="Assets\StoreLogo.png" />
+    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Manifest Include="$(ApplicationManifest)" />
+  </ItemGroup>
+
+  <!--
+    Defining the "Msix" ProjectCapability here allows the Single-project MSIX Packaging
+    Tools extension to be activated for this project even if the Windows App SDK Nuget
+    package has not yet been restored.
+  -->
+  <ItemGroup Condition="'$(DisableMsixProjectCapabilityAddedByProject)'!='true' and '$(EnableMsixTooling)'=='true'">
+    <ProjectCapability Include="Msix" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.26100.7463" />
+    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.8.260101001" />
+  </ItemGroup>
+
+  <!--
+    Defining the "HasPackageAndPublishMenuAddedByProject" property here allows the Solution
+    Explorer "Package and Publish" context menu entry to be enabled for this project even if
+    the Windows App SDK Nuget package has not yet been restored.
+  -->
+  <PropertyGroup Condition="'$(DisableHasPackageAndPublishMenuAddedByProject)'!='true' and '$(EnableMsixTooling)'=='true'">
+    <HasPackageAndPublishMenu>true</HasPackageAndPublishMenu>
+  </PropertyGroup>
+
+  <!-- Publish Properties -->
+  <PropertyGroup>
+    <PublishReadyToRun Condition="'$(Configuration)' == 'Debug'">False</PublishReadyToRun>
+    <PublishReadyToRun Condition="'$(Configuration)' != 'Debug'">True</PublishReadyToRun>
+    <PublishTrimmed Condition="'$(Configuration)' == 'Debug'">False</PublishTrimmed>
+    <PublishTrimmed Condition="'$(Configuration)' != 'Debug'">True</PublishTrimmed>
+  </PropertyGroup>
+</Project>

DummyWinUI/DummyWinUI.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+  <ItemGroup>
+    <None Update="App.xaml">
+      <SubType>Designer</SubType>
+    </None>
+    <None Update="MainWindow.xaml">
+      <SubType>Designer</SubType>
+    </None>
+    <None Update="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </None>
+  </ItemGroup>
+</Project>

DummyWinUI/MainWindow.xaml

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+<?xml version="1.0" encoding="utf-8"?>
+<Window
+    x:Class="DummyWinUI.MainWindow"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:DummyWinUI"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d"
+    Title="DummyWinUI">
+
+    <Window.SystemBackdrop>
+        <DesktopAcrylicBackdrop />
+    </Window.SystemBackdrop>
+
+    <Grid>
+
+    </Grid>
+</Window>

DummyWinUI/MainWindow.xaml.cs

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+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Controls.Primitives;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Input;
+using Microsoft.UI.Xaml.Media;
+using Microsoft.UI.Xaml.Navigation;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+
+// To learn more about WinUI, the WinUI project structure,
+// and more about our project templates, see: http://aka.ms/winui-project-info.
+
+namespace DummyWinUI
+{
+    /// <summary>
+    /// An empty window that can be used on its own or navigated to within a Frame.
+    /// </summary>
+    public sealed partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}

DummyWinUI/Package.appxmanifest

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+<?xml version="1.0" encoding="utf-8"?>
+
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  IgnorableNamespaces="uap rescap">
+
+  <Identity
+    Name="3b8baaa5-e2f5-434a-b7e9-ec5c3d644511"
+    Publisher="CN=rolan"
+    Version="1.0.0.0" />
+
+  <mp:PhoneIdentity PhoneProductId="3b8baaa5-e2f5-434a-b7e9-ec5c3d644511" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
+
+  <Properties>
+    <DisplayName>DummyWinUI</DisplayName>
+    <PublisherDisplayName>rolan</PublisherDisplayName>
+    <Logo>Assets\StoreLogo.png</Logo>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.17763.0" MaxVersionTested="10.0.19041.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.17763.0" MaxVersionTested="10.0.19041.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate"/>
+  </Resources>
+
+  <Applications>
+    <Application Id="App"
+      Executable="$targetnametoken$.exe"
+      EntryPoint="$targetentrypoint$">
+      <uap:VisualElements
+        DisplayName="DummyWinUI"
+        Description="DummyWinUI"
+        BackgroundColor="transparent"
+        Square150x150Logo="Assets\Square150x150Logo.png"
+        Square44x44Logo="Assets\Square44x44Logo.png">
+        <uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png" />
+        <uap:SplashScreen Image="Assets\SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <rescap:Capability Name="runFullTrust" />
+  </Capabilities>
+</Package>

DummyWinUI/Properties/PublishProfiles/win-arm64.pubxml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+https://go.microsoft.com/fwlink/?LinkID=208121.
+-->
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <PublishProtocol>FileSystem</PublishProtocol>
+    <Platform>ARM64</Platform>
+    <RuntimeIdentifier>win-arm64</RuntimeIdentifier>
+    <PublishDir>bin\$(Configuration)\$(TargetFramework)\$(RuntimeIdentifier)\publish\</PublishDir>
+    <SelfContained>true</SelfContained>
+    <PublishSingleFile>False</PublishSingleFile>
+  </PropertyGroup>
+</Project>

DummyWinUI/Properties/PublishProfiles/win-x64.pubxml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+https://go.microsoft.com/fwlink/?LinkID=208121.
+-->
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <PublishProtocol>FileSystem</PublishProtocol>
+    <Platform>x64</Platform>
+    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
+    <PublishDir>bin\$(Configuration)\$(TargetFramework)\$(RuntimeIdentifier)\publish\</PublishDir>
+    <SelfContained>true</SelfContained>
+    <PublishSingleFile>False</PublishSingleFile>
+  </PropertyGroup>
+</Project>

DummyWinUI/Properties/PublishProfiles/win-x86.pubxml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+https://go.microsoft.com/fwlink/?LinkID=208121.
+-->
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <PublishProtocol>FileSystem</PublishProtocol>
+    <Platform>x86</Platform>
+    <RuntimeIdentifier>win-x86</RuntimeIdentifier>
+    <PublishDir>bin\$(Configuration)\$(TargetFramework)\$(RuntimeIdentifier)\publish\</PublishDir>
+    <SelfContained>true</SelfContained>
+    <PublishSingleFile>False</PublishSingleFile>
+  </PropertyGroup>
+</Project>

DummyWinUI/Properties/launchSettings.json

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+{
+  "profiles": {
+    "DummyWinUI (Package)": {
+      "commandName": "MsixPackage"
+    },
+    "DummyWinUI (Unpackaged)": {
+      "commandName": "Project"
+    }
+  }
+}

DummyWinUI/app.manifest

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+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="DummyWinUI.app"/>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- The ID below informs the system that this application is compatible with OS features first introduced in Windows 10. 
+      It is necessary to support features in unpackaged applications, for example the custom titlebar implementation.
+      For more info see https://docs.microsoft.com/windows/apps/windows-app-sdk/use-windows-app-sdk-run-time#declare-os-compatibility-in-your-application-manifest -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+    </application>
+  </compatibility>
+  
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
+    </windowsSettings>
+  </application>
+</assembly>

PVabel2026.slnx

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+<Solution>
+  <Project Path="DummyWinUI/DummyWinUI.csproj">
+    <Platform Project="x64" />
+    <Deploy />
+  </Project>
+  <Project Path="YetAnotherDummy/YetAnotherDummy.csproj" />
+</Solution>

YetAnotherDummy/Program.cs

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+// See https://aka.ms/new-console-template for more information
+using System.Net;
+using System.Net.Sockets;
+using static RemoteFrameBufferClientProtocol;
+
+IPAddress tessia = new([192,168,16,253]);
+
+IRemoteFrameBufferClientStreamProvider tessia6001vnc = new IRemoteFrameBufferClientStreamProvider.RemoteFrameBufferTcpClientStreamProvider(tessia, 5901);
+RemoteFramebufferClient client = new(tessia6001vnc);
+
+client.Start();
+Console.ReadLine();
+client.Stop();
+
+public interface INetEndPoint
+{
+    public IPEndPoint EndPoint { get; }
+    public IPAddress Address { get; }
+    public Int32 Port { get; }
+
+    public class NetEndPointFromIP : INetEndPoint
+    {
+        public IPEndPoint EndPoint { get; }
+        public IPAddress Address => this.EndPoint.Address;
+        public Int32 Port => this.EndPoint.Port;
+
+        public NetEndPointFromIP(IPEndPoint endpoint)
+        {
+            this.EndPoint = endpoint;
+        }
+
+        public NetEndPointFromIP(IPAddress address, Int32 port) : this(new(address, port)) { }
+    }
+
+    public class NetEndPointFromHostname(String hostname, Int32 port) : INetEndPoint
+    {
+        public String Hostname { get; } = hostname;
+        public IPEndPoint EndPoint => new(this.Address, this.Port);
+
+        public IPAddress Address {
+            get
+            {
+                IPHostEntry entry = Dns.GetHostEntry(this.Hostname);
+                return entry.AddressList[0];
+            }
+        }
+        public Int32 Port { get; } = port;
+    }
+}
+
+public interface IRemoteFrameBufferClientStreamProvider
+{
+    public Stream GetRemoteFrameBufferClientStream();
+
+    public class RemoteFrameBufferTcpClientStreamProvider : IRemoteFrameBufferClientStreamProvider
+    {
+        private readonly INetEndPoint remoteEndPoint;
+        private readonly IPEndPoint localEndPoint;
+
+        public RemoteFrameBufferTcpClientStreamProvider(INetEndPoint remoteEndPoint, IPEndPoint? localEndPoint)
+        {
+            this.remoteEndPoint = remoteEndPoint;
+            this.localEndPoint = localEndPoint ?? new(IPAddress.Any, 0);
+        }
+
+        public Stream GetRemoteFrameBufferClientStream()
+        {
+            TcpClient tcpClient = new TcpClient(this.localEndPoint);
+            tcpClient.Connect(this.remoteEndPoint.EndPoint);
+            return tcpClient.GetStream();
+        }
+
+        public RemoteFrameBufferTcpClientStreamProvider(String hostname, Int16 port, IPEndPoint? localEndPoint = null) : this(new INetEndPoint.NetEndPointFromHostname(hostname, port), localEndPoint) { }
+        public RemoteFrameBufferTcpClientStreamProvider(IPAddress address, Int32 port, IPEndPoint? localEndPoint = null) : this(new INetEndPoint.NetEndPointFromIP(address, port), localEndPoint) { }
+        public RemoteFrameBufferTcpClientStreamProvider(IPEndPoint remoteEndPoint, IPEndPoint? localEndPoint = null) : this(new INetEndPoint.NetEndPointFromIP(remoteEndPoint), localEndPoint) { }
+    }
+}
+
+public class RemoteFramebufferClient
+{
+    private static Dictionary<RfbProtoVersion, RemoteFrameBufferClientProtocol.IRemoteFramebufferClientProtocolFactory> _protocolHandlers;
+
+    private readonly IRemoteFrameBufferClientStreamProvider _socketProvider;
+    private Task? backgroundWorker;
+    private CancellationTokenSource cancellationTokenSource = new();
+
+    static RemoteFramebufferClient() {
+        _protocolHandlers = new() {
+            { new RfbProtoVersion(3, 3), new RemoteFrameBufferClientProtocolFactory<RemoteFrameBufferClientProtocol.RemoteFrameBufferClientProtocol_3_3>() },
+        };
+    }
+
+    public RemoteFramebufferClient(IRemoteFrameBufferClientStreamProvider socketProvider)
+    {
+        this._socketProvider = socketProvider;
+    }
+
+    public void Start()
+    {
+        if (this.backgroundWorker == null)
+        {
+            Console.Error.WriteLine("VNC client starting");
+            this.backgroundWorker = new Task(this.Worker, this.cancellationTokenSource.Token);
+            this.backgroundWorker.ContinueWith(this.WorkerStopped);
+            this.backgroundWorker.Start();
+        }
+    }
+
+    public void Stop()
+    {
+        if (this.backgroundWorker != null)
+        {
+            this.cancellationTokenSource.Cancel();
+            this.backgroundWorker.Wait();
+        }
+    }
+
+    private void Worker()
+    {
+        while (!this.cancellationTokenSource.Token.IsCancellationRequested)
+        {
+            Console.Error.WriteLine("Attempting to connect");
+            Stream s = this._socketProvider.GetRemoteFrameBufferClientStream();
+            using (s)
+            {
+
+            }
+
+        }
+    }
+
+    private void WorkerStopped(Task t)
+    {
+        Console.Error.WriteLine("VNC client exited");
+        this.backgroundWorker = null;
+        if (!this.cancellationTokenSource.TryReset())
+        {
+            this.cancellationTokenSource = new();
+        }
+    }
+
+    private struct RfbProtoVersion(Int16 major, Int16 minor)
+    {
+        public Int16 Major = major;
+        public Int16 Minor = minor;
+    }
+
+}
+
+public abstract class RemoteFrameBufferClientProtocol
+{
+    protected readonly Stream vncStream;
+
+    public RemoteFrameBufferClientProtocol(Stream s)
+    {
+        this.vncStream = s;
+    }
+
+    public interface IRemoteFramebufferClientProtocolFactory {
+        public abstract RemoteFrameBufferClientProtocol Construct(Stream s);
+    }
+    public class RemoteFrameBufferClientProtocolFactory<T> : IRemoteFramebufferClientProtocolFactory where T : RemoteFrameBufferClientProtocol
+    {
+        public RemoteFrameBufferClientProtocol Construct(Stream s)
+        {
+            return (RemoteFrameBufferClientProtocol)Activator.CreateInstance(typeof(T), s)!;
+        }
+    }
+
+    public class RemoteFrameBufferClientProtocol_3_3 : RemoteFrameBufferClientProtocol
+    {
+        public RemoteFrameBufferClientProtocol_3_3(Stream s) : base(s)
+        {
+        }
+    }
+}

YetAnotherDummy/YetAnotherDummy.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>