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Add: Dauerhaftes Bildschirm-Übertragung-Overlay während RDP-Session (v2.6.0)

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- RdpActiveIndicatorWindow: TeamViewer-Style Overlay unten rechts, solange
  RDP-Capture läuft. Zeigt Dauer der Sitzung + pulsierenden roten Punkt
- User kann per "Trennen"-Button selbst die Sitzung beenden (TCP-Signal
  an Service, cancelt Capture-Loop sofort — auch nach Screen-Wechsel)
- Overlay läuft als separater User-Prozess via SessionSpawner, wird vom
  Service direkt gekillt wenn Sitzung endet (rdp_stop oder Disconnect)
- Version: 2.5.0 → 2.6.0

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Simon Grüssing
2026-06-19 12:06:50 +02:00
parent cb59cfe9cf
commit 3ea28def4c
9 changed files with 202 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
agent-cs/AgentWorker.cs
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@@ -6,7 +6,7 @@ namespace ITNexusAgent;
public class AgentWorker
{
private const string Version = "2.5.0";
private const string Version = "2.6.0";
private const string DataDir = @"C:\ProgramData\IT Nexus Agent";
private const string ConfigPath = @"C:\ProgramData\IT Nexus Agent\config.json";
private const string StatusPath = @"C:\ProgramData\IT Nexus Agent\status.json";

4
agent-cs/IT-Nexus-Agent.csproj
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@@ -7,8 +7,8 @@
<UseWindowsForms>true</UseWindowsForms>
<AssemblyName>IT-Nexus-Agent</AssemblyName>
<RootNamespace>ITNexusAgent</RootNamespace>
<Version>2.5.0</Version>
<AssemblyVersion>2.5.0.0</AssemblyVersion>
<Version>2.6.0</Version>
<AssemblyVersion>2.6.0.0</AssemblyVersion>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<AllowUnsafeBlocks>false</AllowUnsafeBlocks>

20
agent-cs/IndicatorModeRunner.cs Normal file
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@@ -0,0 +1,20 @@
using ITNexusAgent.UI;
namespace ITNexusAgent;
// Läuft als User-Prozess (via SessionSpawner), zeigt dauerhaftes "Bildschirm wird übertragen"-Overlay
// solange RDP-Session aktiv ist. User kann selbst trennen (TCP-Signal an Service).
public static class IndicatorModeRunner
{
public static void Run(string portStr)
{
if (!int.TryParse(portStr, out var port) || port <= 0) return;
var app = new System.Windows.Application();
app.ShutdownMode = System.Windows.ShutdownMode.OnMainWindowClose;
var win = new RdpActiveIndicatorWindow(port);
win.Show();
app.Run();
}
}

4
agent-cs/Program.cs
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@@ -29,6 +29,10 @@ internal class Program
args.Length > 2 && int.TryParse(args[2], out var si) ? si : 0);
return;
case "--rdp-indicator":
IndicatorModeRunner.Run(args.Length > 1 ? args[1] : "");
return;
case "--dashboard":
RunDashboard();
return;

63
agent-cs/Services/RtcService.cs
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@@ -15,6 +15,9 @@ public class RtcService
private readonly string _serverUrl;
private readonly string _agentKey;
private readonly string _hostname;
private int _indicatorPid = -1;
private TcpListener? _indicatorListener;
private CancellationTokenSource? _userDisconnectCts;
public RtcService(string serverUrl, string agentKey, string hostname)
{
@@ -76,21 +79,39 @@ public class RtcService
var newScreen = obj["screen"]?.ToObject<int>() ?? 0;
captureCts.Cancel();
captureCts = CancellationTokenSource.CreateLinkedTokenSource(ct);
_ = CapturePipeLoopAsync(ws, newScreen, captureCts.Token);
var switchToken = _userDisconnectCts != null
? CancellationTokenSource.CreateLinkedTokenSource(captureCts.Token, _userDisconnectCts.Token).Token
: captureCts.Token;
_ = CapturePipeLoopAsync(ws, newScreen, switchToken);
AgentWorker.Log($"RDP: Screen gewechselt zu {newScreen}");
}
else if (type == "rdp_stop" && captureCts != null)
{
captureCts.Cancel();
captureCts = null;
StopIndicator();
AgentWorker.Log("RDP: Screen-Capture gestoppt");
}
}
captureCts?.Cancel();
StopIndicator();
AgentWorker.Log("RDP: Getrennt");
}
private void StopIndicator()
{
_userDisconnectCts?.Cancel();
_userDisconnectCts = null;
try { _indicatorListener?.Stop(); } catch { }
_indicatorListener = null;
if (_indicatorPid > 0)
{
try { Process.GetProcessById(_indicatorPid).Kill(); } catch { }
_indicatorPid = -1;
}
}
private async Task ConsentAndCaptureAsync(ClientWebSocket ws, int screenIdx, CancellationToken ct)
{
var exePath = System.Diagnostics.Process.GetCurrentProcess().MainModule!.FileName;
@@ -136,7 +157,45 @@ public class RtcService
}
AgentWorker.Log("RDP: User hat Zugriff erlaubt, starte Capture");
await CapturePipeLoopAsync(ws, screenIdx, ct);
SpawnIndicator(exePath);
var combinedToken = _userDisconnectCts != null
? CancellationTokenSource.CreateLinkedTokenSource(ct, _userDisconnectCts.Token).Token
: ct;
await CapturePipeLoopAsync(ws, screenIdx, combinedToken);
}
// Zeigt dauerhaftes "Bildschirm wird übertragen"-Overlay (TeamViewer-Style) solange Capture läuft.
// User kann per Klick selbst trennen — Signal landet hier als CancellationTokenSource.Cancel().
private void SpawnIndicator(string exePath)
{
try
{
_indicatorListener = new TcpListener(IPAddress.Loopback, 0);
_indicatorListener.Start();
var port = ((IPEndPoint)_indicatorListener.LocalEndpoint).Port;
_userDisconnectCts = new CancellationTokenSource();
var listener = _indicatorListener;
var disconnectCts = _userDisconnectCts;
_ = Task.Run(async () =>
{
try
{
using var tcp = await listener.AcceptTcpClientAsync();
tcp.GetStream().ReadByte();
disconnectCts.Cancel();
AgentWorker.Log("RDP: User hat über Overlay getrennt");
}
catch { }
});
_indicatorPid = SessionSpawner.SpawnInUserSession(exePath, $"--rdp-indicator {port}");
}
catch (Exception ex)
{
AgentWorker.Log($"RDP: Indicator-Start fehlgeschlagen: {ex.Message}");
}
}
private static bool SpawnConsentHelper(string exePath, string portStr)

57
agent-cs/UI/RdpActiveIndicatorWindow.xaml Normal file
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@@ -0,0 +1,57 @@
<Window x:Class="ITNexusAgent.UI.RdpActiveIndicatorWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="IT Nexus – Bildschirmübertragung aktiv"
Width="300" Height="64"
WindowStartupLocation="Manual"
ResizeMode="NoResize"
WindowStyle="None"
AllowsTransparency="True"
Background="Transparent"
Topmost="True"
ShowInTaskbar="False"
FontFamily="Segoe UI">
<Border Background="#1A1D2E" BorderBrush="#E67E22" BorderThickness="1.5" CornerRadius="10">
<Grid Margin="14,10,14,10">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<!-- Pulsierender roter Punkt -->
<Ellipse x:Name="PulseDot" Grid.Column="0" Width="10" Height="10" Fill="#E74C3C"
VerticalAlignment="Center" Margin="0,0,12,0">
<Ellipse.Triggers>
</Ellipse.Triggers>
</Ellipse>
<StackPanel Grid.Column="1" VerticalAlignment="Center">
<TextBlock Text="Bildschirm wird übertragen" FontSize="12" FontWeight="Bold" Foreground="White"/>
<TextBlock x:Name="DurationText" Text="IT-Abteilung sieht zu · 00:00" FontSize="10.5" Foreground="#9099B5" Margin="0,2,0,0"/>
</StackPanel>
<Button x:Name="DisconnectButton" Grid.Column="2" Click="DisconnectButton_Click"
Background="#3D1414" Foreground="#FF8A80" BorderThickness="1" BorderBrush="#6B2020"
Padding="10,6" Cursor="Hand" VerticalAlignment="Center" FontSize="11" FontWeight="Bold">
<Button.Template>
<ControlTemplate TargetType="Button">
<Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="6" Padding="{TemplateBinding Padding}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Button.Template>
<TextBlock Text="Trennen"/>
</Button>
</Grid>
</Border>
<Window.Resources>
<Storyboard x:Key="PulseAnim" RepeatBehavior="Forever">
<DoubleAnimation Storyboard.TargetName="PulseDot" Storyboard.TargetProperty="Opacity"
From="1.0" To="0.25" Duration="0:0:0.9" AutoReverse="True"/>
</Storyboard>
</Window.Resources>
</Window>

55
agent-cs/UI/RdpActiveIndicatorWindow.xaml.cs Normal file
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@@ -0,0 +1,55 @@
using System.Net.Sockets;
using System.Windows;
using System.Windows.Media.Animation;
namespace ITNexusAgent.UI;
public partial class RdpActiveIndicatorWindow : Window
{
private readonly int _port;
private readonly DateTime _startedAt = DateTime.Now;
private readonly System.Windows.Threading.DispatcherTimer _timer = new();
private bool _signaled = false;
public RdpActiveIndicatorWindow(int port)
{
InitializeComponent();
_port = port;
Loaded += (s, e) =>
{
var area = SystemParameters.WorkArea;
Left = area.Right - Width - 16;
Top = area.Bottom - Height - 16;
((Storyboard)Resources["PulseAnim"]).Begin(PulseDot);
};
_timer.Interval = TimeSpan.FromSeconds(1);
_timer.Tick += (s, e) =>
{
var elapsed = DateTime.Now - _startedAt;
DurationText.Text = $"IT-Abteilung sieht zu · {elapsed:mm\\:ss}";
};
_timer.Start();
}
private void DisconnectButton_Click(object sender, RoutedEventArgs e)
{
SendDisconnectSignal();
Close();
}
private void SendDisconnectSignal()
{
if (_signaled) return;
_signaled = true;
try
{
using var tcp = new TcpClient();
tcp.Connect("127.0.0.1", _port);
tcp.GetStream().WriteByte(1);
tcp.GetStream().Flush();
}
catch { }
}
}

2
agent-cs/setup.iss
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@@ -1,5 +1,5 @@
#define MyAppName "IT Nexus Agent"
#define MyAppVersion "2.5.0"
#define MyAppVersion "2.6.0"
#define MyAppPublisher "Cereda Systems GmbH"
#define MyAppURL "https://it-nexus.cereda-systems.de"
#define MyAppExeName "IT-Nexus-Agent.exe"