[GUI] Add network interface dropdown (#4597)

* Add network adapter dropdown from LDN build

* Ava: Add NetworkInterfaces to SettingsNetworkTab

* Add headless network interface option

* Add network interface dropdown to Avalonia

* Fix handling network interfaces without a gateway address

* gtk: Actually save selected network interface to config

* Increment config version

Ryujinx.Ava/AppHost.cs

@@ -177,6 +177,8 @@ namespace Ryujinx.Ava
             ConfigurationState.Instance.Graphics.ScalingFilter.Event       += UpdateScalingFilter;
             ConfigurationState.Instance.Graphics.ScalingFilterLevel.Event  += UpdateScalingFilterLevel;
 
+            ConfigurationState.Instance.Multiplayer.LanInterfaceId.Event   += UpdateLanInterfaceIdState;
+
             _gpuCancellationTokenSource = new CancellationTokenSource();
         }
 
@@ -383,6 +385,11 @@ namespace Ryujinx.Ava
             });
         }
 
+        private void UpdateLanInterfaceIdState(object sender, ReactiveEventArgs<string> e)
+        {
+            Device.Configuration.MultiplayerLanInterfaceId = e.NewValue;
+        }
+
         public void Stop()
         {
             _isActive = false;
@@ -739,7 +746,8 @@ namespace Ryujinx.Ava
                                                      ConfigurationState.Instance.System.IgnoreMissingServices,
                                                      ConfigurationState.Instance.Graphics.AspectRatio,
                                                      ConfigurationState.Instance.System.AudioVolume,
-                                                     ConfigurationState.Instance.System.UseHypervisor);
+                                                     ConfigurationState.Instance.System.UseHypervisor,
+                                                     ConfigurationState.Instance.Multiplayer.LanInterfaceId.Value);
 
             Device = new Switch(configuration);
         }

Ryujinx.Ava/Assets/Locales/en_US.json

@@ -638,5 +638,8 @@
   "SmaaHigh": "SMAA High",
   "SmaaUltra": "SMAA Ultra",
   "UserEditorTitle" : "Edit User",
-  "UserEditorTitleCreate" : "Create User"
+  "UserEditorTitleCreate" : "Create User",
+  "SettingsTabNetworkInterface": "Network Interface:",
+  "NetworkInterfaceTooltip": "The network interface used for LAN features",
+  "NetworkInterfaceDefault": "Default"
 }

Ryujinx.Ava/UI/ViewModels/SettingsViewModel.cs

@@ -23,6 +23,7 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
 using System.Runtime.InteropServices;
+using System.Net.NetworkInformation;
 using TimeZone = Ryujinx.Ava.UI.Models.TimeZone;
 
 namespace Ryujinx.Ava.UI.ViewModels
@@ -35,6 +36,8 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         private readonly List<string> _validTzRegions;
 
+        private readonly Dictionary<string, string> _networkInterfaces;
+
         private float _customResolutionScale;
         private int _resolutionScale;
         private int _graphicsBackendMultithreadingIndex;
@@ -50,6 +53,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         public event Action CloseWindow;
         public event Action SaveSettingsEvent;
+        private int _networkInterfaceIndex;
 
         public int ResolutionScale
         {
@@ -240,6 +244,11 @@ namespace Ryujinx.Ava.UI.ViewModels
         public AvaloniaList<string> GameDirectories { get; set; }
         public ObservableCollection<ComboBoxItem> AvailableGpus { get; set; }
 
+        public AvaloniaList<string> NetworkInterfaceList
+        {
+            get => new AvaloniaList<string>(_networkInterfaces.Keys);
+        }
+
         public KeyboardHotkeys KeyboardHotkeys
         {
             get => _keyboardHotkeys;
@@ -251,6 +260,16 @@ namespace Ryujinx.Ava.UI.ViewModels
             }
         }
 
+        public int NetworkInterfaceIndex
+        {
+            get => _networkInterfaceIndex;
+            set
+            {
+                _networkInterfaceIndex = value != -1 ? value : 0;
+                ConfigurationState.Instance.Multiplayer.LanInterfaceId.Value = _networkInterfaces[NetworkInterfaceList[_networkInterfaceIndex]];
+            }
+        }
+
         public SettingsViewModel(VirtualFileSystem virtualFileSystem, ContentManager contentManager) : this()
         {
             _virtualFileSystem = virtualFileSystem;
@@ -267,8 +286,10 @@ namespace Ryujinx.Ava.UI.ViewModels
             TimeZones = new AvaloniaList<TimeZone>();
             AvailableGpus = new ObservableCollection<ComboBoxItem>();
             _validTzRegions = new List<string>();
+            _networkInterfaces = new Dictionary<string, string>();
 
             CheckSoundBackends();
+            PopulateNetworkInterfaces();
 
             if (Program.PreviewerDetached)
             {
@@ -327,6 +348,17 @@ namespace Ryujinx.Ava.UI.ViewModels
             }
         }
 
+        private void PopulateNetworkInterfaces()
+        {
+            _networkInterfaces.Clear();
+            _networkInterfaces.Add(LocaleManager.Instance[LocaleKeys.NetworkInterfaceDefault], "0");
+
+            foreach (NetworkInterface networkInterface in NetworkInterface.GetAllNetworkInterfaces())
+            {
+                _networkInterfaces.Add(networkInterface.Name, networkInterface.Id);
+            }
+        }
+
         public void ValidateAndSetTimeZone(string location)
         {
             if (_validTzRegions.Contains(location))
@@ -414,6 +446,8 @@ namespace Ryujinx.Ava.UI.ViewModels
             EnableFsAccessLog = config.Logger.EnableFsAccessLog;
             FsGlobalAccessLogMode = config.System.FsGlobalAccessLogMode;
             OpenglDebugLevel = (int)config.Logger.GraphicsDebugLevel.Value;
+
+            NetworkInterfaceIndex = _networkInterfaces.Values.ToList().IndexOf(config.Multiplayer.LanInterfaceId.Value);
         }
 
         public void SaveSettings()
@@ -515,6 +549,8 @@ namespace Ryujinx.Ava.UI.ViewModels
             config.System.FsGlobalAccessLogMode.Value = FsGlobalAccessLogMode;
             config.Logger.GraphicsDebugLevel.Value = (GraphicsDebugLevel)OpenglDebugLevel;
 
+            config.Multiplayer.LanInterfaceId.Value = _networkInterfaces[NetworkInterfaceList[NetworkInterfaceIndex]];
+
             config.ToFileFormat().SaveConfig(Program.ConfigurationPath);
 
             MainWindow.UpdateGraphicsConfig();

Ryujinx.Ava/UI/Views/Settings/SettingsNetworkView.axaml

@@ -1,4 +1,4 @@
-<UserControl 
+<UserControl
     x:Class="Ryujinx.Ava.UI.Views.Settings.SettingsNetworkView"
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
@@ -29,7 +29,18 @@
                     <TextBlock Text="{locale:Locale SettingsTabSystemEnableInternetAccess}"
                                ToolTip.Tip="{locale:Locale EnableInternetAccessTooltip}" />
                 </CheckBox>
+                <StackPanel Margin="10,0,0,0" Orientation="Horizontal">
+                    <TextBlock VerticalAlignment="Center"
+                               Text="{locale:Locale SettingsTabNetworkInterface}"
+                               ToolTip.Tip="{locale:Locale NetworkInterfaceTooltip}"
+                               Width="200" />
+                    <ComboBox SelectedIndex="{Binding NetworkInterfaceIndex}"
+                              ToolTip.Tip="{locale:Locale NetworkInterfaceTooltip}"
+                              HorizontalContentAlignment="Left"
+                              Items="{Binding NetworkInterfaceList}"
+                              Width="250" />
+                </StackPanel>
             </StackPanel>
         </Border>
     </ScrollViewer>
-</UserControl>
+</UserControl>