Fix managed iOS native media linking

clients/apple/dotnet/VoiceCat.iOS/AppModel.cs

@@ -98,6 +98,11 @@ internal sealed class AppModel
         Status = restoring ? "Reconnecting…" : "Connecting…"; Notify();
         lifetime?.Cancel(); lifetime?.Dispose(); lifetime = new();
         VoiceCatClient next = new("VoiceCat-iOS", "0.0.1", storage.TofuPath);
+        next.ConnectionStateChanged += state =>
+        {
+            if (state == ClientConnectionState.Disconnected && next.ConnectionFailure is { } failure)
+                Console.Error.WriteLine($"VoiceCat control connection failed: {failure}");
+        };
         client = next;
         try
         {
@@ -118,8 +123,10 @@ internal sealed class AppModel
         }
         catch (Exception exception)
         {
-            IsConnecting = false; Status = exception.Message; Notify();
+            System.Diagnostics.Debug.WriteLine($"Connection failed: {exception}");
+            IsConnecting = false; Status = exception.Message;
             await next.DisposeAsync(); if (ReferenceEquals(client, next)) client = null;
+            Notify();
             if (restoring && !explicitDisconnect) ScheduleReconnect();
             else throw;
         }

clients/apple/dotnet/VoiceCat.iOS/VoiceCat.iOS.csproj

@@ -32,6 +32,10 @@
       <Kind>Static</Kind>
       <ForceLoad>true</ForceLoad>
     </NativeReference>
+    <LinkerArgument Include="-Wl,-force_load,$(VoiceCatNativeMediaPath)" Condition="Exists('$(VoiceCatNativeMediaPath)')" />
+    <ReferenceNativeSymbol Include="vcm_opus_version;vcm_opus_error;vcm_encoder_create;vcm_encoder_destroy;vcm_encoder_set;vcm_encoder_get_dred;vcm_encode;vcm_decoder_create;vcm_decoder_destroy;vcm_decode;vcm_dred_decoder_create;vcm_dred_decoder_destroy;vcm_dred_create;vcm_dred_destroy;vcm_dred_parse;vcm_dred_decode;vcm_rnnoise_create;vcm_rnnoise_destroy;vcm_rnnoise_process">
+      <SymbolType>Function</SymbolType>
+    </ReferenceNativeSymbol>
     <NativeReference Include="$(VoiceCatIosCaptureOutput)/libvoicecat_ios_capture.a">
       <Kind>Static</Kind>
       <ForceLoad>true</ForceLoad>

clients/apple/dotnet/build-ios-device.sh

@@ -30,6 +30,18 @@ if [ -n "${VOICECAT_CODESIGN_PROVISION:-}" ]; then set -- "$@" -p:CodesignProvis
 
 app="$root/clients/apple/dotnet/VoiceCat.iOS/bin/$configuration/net10.0-ios27.0/ios-arm64/VoiceCat.iOS.app"
 [ -d "$app" ] || { echo "device app was not produced at $app" >&2; exit 1; }
+/usr/bin/strings "$app/VoiceCat.Codec.dll" | /usr/bin/grep -q GetMainProgramHandle || {
+    echo "device codec does not contain the iOS static-library resolver" >&2
+    exit 1
+}
+/usr/bin/nm -gU "$app/VoiceCat.iOS" | /usr/bin/grep -q _vcm_decoder_create || {
+    echo "device executable does not export the statically linked media codec" >&2
+    exit 1
+}
+/usr/bin/nm -gU "$app/VoiceCat.iOS" | /usr/bin/grep -q _vcm_rnnoise_create || {
+    echo "device executable does not export the statically linked RNNoise processor" >&2
+    exit 1
+}
 mkdir -p "$output"
 /usr/bin/ditto "$app" "$output/VoiceCat.iOS.app"
 /usr/bin/codesign --verify --deep --strict "$output/VoiceCat.iOS.app"

dotnet/Directory.Build.props

@@ -8,7 +8,6 @@
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
   </PropertyGroup>
   <PropertyGroup Condition="'$(VoiceCatIosStatic)' == 'true'">
-    <DefineConstants>$(DefineConstants);VOICECAT_IOS_STATIC</DefineConstants>
     <RuntimeIdentifiers>ios-arm64;iossimulator-arm64</RuntimeIdentifiers>
     <NuGetLockFilePath>packages.ios.lock.json</NuGetLockFilePath>
   </PropertyGroup>

dotnet/src/VoiceCat.Codec/NativeMethods.cs

@@ -1,14 +1,19 @@
 using System.Runtime.InteropServices;
+using System.Reflection;
 
 namespace VoiceCat.Codec;
 
 internal static unsafe partial class NativeMethods
 {
-#if VOICECAT_IOS_STATIC
-    private const string Library = "__Internal";
-#else
+    static NativeMethods()
+    {
+        if (OperatingSystem.IsIOS()) NativeLibrary.SetDllImportResolver(typeof(NativeMethods).Assembly, ResolveIosStaticLibrary);
+    }
+
+    private static nint ResolveIosStaticLibrary(string libraryName, Assembly assembly, DllImportSearchPath? searchPath) =>
+        libraryName == "voicecat_media" ? NativeLibrary.GetMainProgramHandle() : 0;
+
     private const string Library = "voicecat_media";
-#endif
     [LibraryImport(Library, EntryPoint = "vcm_opus_version")]
     internal static partial nint Version();
     [LibraryImport(Library, EntryPoint = "vcm_opus_error")]

dotnet/src/VoiceCat.Core/VoiceCatClient.cs

@@ -43,6 +43,7 @@ public sealed partial class VoiceCatClient : IAsyncDisposable
 
     public event Action<ClientConnectionState>? ConnectionStateChanged;
     public ClientConnectionState State { get { lock (stateGate) return state; } }
+    public Exception? ConnectionFailure { get; private set; }
     public Task Completion => reader;
     public AuthResult? Authentication { get { lock (stateGate) return authentication?.Clone(); } }
     public ServerHello? ServerHello { get { lock (stateGate) return hello?.Clone(); } }
@@ -72,6 +73,7 @@ public sealed partial class VoiceCatClient : IAsyncDisposable
             ObjectDisposedException.ThrowIf(disposed.IsCancellationRequested, this);
             if (control is not null) throw new InvalidOperationException("Disconnect before reconnecting.");
             started = true;
+            ConnectionFailure = null;
             connectionLifetime = CancellationTokenSource.CreateLinkedTokenSource(disposed.Token);
             using var connecting = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, connectionLifetime.Token);
             CancellationToken token = connecting.Token;
@@ -201,7 +203,7 @@ public sealed partial class VoiceCatClient : IAsyncDisposable
                 if (message.Disconnect is not null) { connection.CompleteWrites(); break; }
             }
         }
-        catch (Exception exception) when (exception is IOException or OperationCanceledException or SocketException or ObjectDisposedException) { failure = exception; }
+        catch (Exception exception) { failure = exception; ConnectionFailure = exception; }
         finally
         {
             connectionLifetime?.Cancel();

dotnet/src/VoiceCat.Dsp/RnnoiseProcessor.cs

@@ -1,21 +1,26 @@
 using System.Runtime.InteropServices;
+using System.Reflection;
 using Microsoft.Win32.SafeHandles;
 
 namespace VoiceCat.Dsp;
 
 public sealed unsafe partial class RnnoiseProcessor : IDisposable
 {
-#if VOICECAT_IOS_STATIC
-    private const string NativeLibrary = "__Internal";
-#else
     private const string NativeLibrary = "voicecat_media";
-#endif
     public const int SampleRate = 48000;
     public const int FrameSamples = 480;
     private readonly RnnoiseHandle handle;
     private readonly float[] input = new float[FrameSamples];
     private readonly float[] output = new float[FrameSamples];
 
+    static RnnoiseProcessor()
+    {
+        if (OperatingSystem.IsIOS()) System.Runtime.InteropServices.NativeLibrary.SetDllImportResolver(typeof(RnnoiseProcessor).Assembly, ResolveIosStaticLibrary);
+    }
+
+    private static nint ResolveIosStaticLibrary(string libraryName, Assembly assembly, DllImportSearchPath? searchPath) =>
+        libraryName == NativeLibrary ? System.Runtime.InteropServices.NativeLibrary.GetMainProgramHandle() : 0;
+
     public RnnoiseProcessor()
     {
         handle = new(Create());