Allow for cancelling downloads from filesystem

Rebuild request orignally will use setting for constructing the url
Rebuild request from client via no-cache will use httppcontext to get runtime pathing to generate url
Escape the url generated

TinfoilVibeServer.sln.DotSettings.user

@@ -13,6 +13,7 @@
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AConcurrentDictionary_002Ecs_002Fl_003AC_0021_003FUsers_003Fecens_003FAppData_003FRoaming_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FSourcesCache_003F8d7a996932951dc929c6c3855f98f0c58cae8ac5b0d0bbf223f97c6388b3b61f_003FConcurrentDictionary_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AControllerBase_002Ecs_002Fl_003AC_0021_003FUsers_003Fecens_003FAppData_003FRoaming_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FSourcesCache_003F6fa05d7dbf2e454ce78b261b422234da1f1ccedee678fd997e5ef4afe6df6e_003FControllerBase_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003ACryptoUtil_002Ecs_002Fl_003AC_0021_003FUsers_003Fecens_003FAppData_003FRoaming_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FDecompilerCache_003Fdecompiler_003F77078e9a1d254191bb508f54a277fc6e1c2e00_003Fd4_003F032ece9d_003FCryptoUtil_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003ADefaultHttpContext_002Ecs_002Fl_003AC_0021_003FUsers_003Fecens_003FAppData_003FRoaming_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FSourcesCache_003F6af28599e71724c5fc6a617444e2f60b5d57dfdc5be0df4ba43ccfc36977_003FDefaultHttpContext_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003ADictionary_002Ecs_002Fl_003AC_0021_003FUsers_003Fecens_003FAppData_003FRoaming_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FSourcesCache_003Fe5d623ea960f2c3c9fda144954d339f8d4cd3dad6dd8bd4ab96093a010ab_003FDictionary_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AExceptionDispatchInfo_002Ecs_002Fl_003AC_0021_003FUsers_003Fecens_003FAppData_003FRoaming_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FSourcesCache_003Fbd1d5c50194fea68ff3559c160230b0ab50f5acf4ce3061bffd6d62958e2182_003FExceptionDispatchInfo_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AExecutionContext_002Ecs_002Fl_003AC_0021_003FUsers_003Fecens_003FAppData_003FRoaming_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FSourcesCache_003F53b0d531c06faf86bf2ae111a9a2dbce4c52a9153feb9966ade60289c71bf52_003FExecutionContext_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>

TinfoilVibeServer/Controllers/CancelableFileResult.cs

@@ -0,0 +1,53 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace TinfoilVibeServer.Controllers;
+
+public class CancelableFileResult : FileResult
+{
+    private readonly Stream _fileStream;
+
+    public CancelableFileResult(string contentType, Stream fileStream)
+        : base(contentType)
+    {
+        _fileStream = fileStream ?? throw new ArgumentNullException(nameof(fileStream));
+    }
+
+    /// <summary>
+    /// Allows you to set a suggested download name.  
+    /// It will be sent in a “Content‑Disposition” header.
+    /// </summary>
+    public string? FileDownloadName { get; set; }
+
+    public override async Task ExecuteResultAsync(ActionContext context)
+    {
+        var response = context.HttpContext.Response;
+
+        if (!string.IsNullOrEmpty(FileDownloadName))
+        {
+            // Typical “attachment” disposition – most browsers honour it.
+            response.Headers.Append("Content-Disposition",
+                $"attachment; filename=\"{FileDownloadName}\"");
+        }
+
+        // The request‑aborted token tells the stream copy to stop ASAP
+        var cancellationToken = context.HttpContext.RequestAborted;
+
+        try
+        {
+            // Copy the file to the response body in 8 KiB chunks
+            await _fileStream.CopyToAsync(
+                response.Body,
+                bufferSize: 81920,   // 80 KiB – default for Stream.CopyToAsync
+                cancellationToken);
+        }
+        catch (OperationCanceledException)
+        {
+            // The client disconnected – nothing to do.  
+            // Swallowing keeps the API from returning a 500 error.
+        }
+        finally
+        {
+            await _fileStream.DisposeAsync();
+        }
+    }
+}

TinfoilVibeServer/Controllers/IndexController.cs

@@ -43,7 +43,7 @@ public sealed class IndexController : ControllerBase
             _indexBuilderService.InvalidateIndex(this, EventArgs.Empty);
         }
 
-        var index = _indexBuilderService.Build();
+        var index = _indexBuilderService.Build(HttpContext);
 
         return Ok(index);
     }
@@ -83,13 +83,27 @@ public sealed class IndexController : ControllerBase
 
         // ---- 3️⃣  If the file is a normal NSP → send it ----------------
 
-        if (Path.GetExtension(entry.Path).Equals(".nsp", StringComparison.OrdinalIgnoreCase) && !entry.Path.Contains(_snapshotService.GetArchivePathSeparator()))
+        if (Path.GetExtension(entry.Path).Equals(".nsp", StringComparison.OrdinalIgnoreCase)
+            && !entry.Path.Contains(_snapshotService.GetArchivePathSeparator()))
         {
             if (System.IO.File.Exists(entry.Path))
             {
-                // Regular file – just serve it.
-                return PhysicalFile(entry.Path, "application/octet-stream",
-                    Path.GetFileName(entry.Path));
+                // 1️⃣ Open the file for async read
+                var fileStream = new FileStream(
+                    entry.Path,
+                    FileMode.Open,
+                    FileAccess.Read,
+                    FileShare.Read,
+                    bufferSize: 128 * 1024 * 1024, // 81920,   // 80 KiB
+                    useAsync: true);     // <‑‑ VERY important for scalability
+
+                // 2️⃣ Return a cancellation‑aware result
+                return new CancelableFileResult(
+                    contentType: "application/octet-stream",
+                    fileStream: fileStream)
+                {
+                    FileDownloadName = Path.GetFileName(entry.Path)   // optional but nice
+                };
             }
         }
 
@@ -220,6 +234,12 @@ public sealed class IndexController : ControllerBase
 
         public override void Write(byte[] buffer, int offset, int count) => _innerStream.Write(buffer, offset, count);
 
+
+        public override Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken)
+        {
+            return _innerStream.CopyToAsync(destination, bufferSize, cancellationToken);
+        }
+
         public override bool CanRead => _innerStream.CanRead;
         public override bool CanSeek => _innerStream.CanSeek;
         public override bool CanWrite => _innerStream.CanWrite;

TinfoilVibeServer/Middleware/BasicAuthMiddleware.cs

@@ -91,7 +91,7 @@ public sealed class BasicAuthMiddleware
         {
             logger.LogWarning("Auth failed for user {User} from {IP}: {Error}", username, ip, error);
             context.Response.StatusCode = StatusCodes.Status401Unauthorized;
-            context.Response.Headers.Add("WWW-Authenticate", "Basic realm=\"FileSnapshot\"");
+            context.Response.Headers.Append("WWW-Authenticate", "Basic realm=\"FileSnapshot\"");
             await context.Response.WriteAsync(error ?? "Unauthorized");
             return;
         }
@@ -105,6 +105,6 @@ public sealed class BasicAuthMiddleware
     private static void Challenge(HttpContext ctx)
     {
         ctx.Response.StatusCode = StatusCodes.Status401Unauthorized;
-        ctx.Response.Headers.Add("WWW-Authenticate", "Basic realm=\"FileSnapshot\"");
+        ctx.Response.Headers.Append("WWW-Authenticate", "Basic realm=\"FileSnapshot\"");
     }
 }

TinfoilVibeServer/Models/IndexBuilderSettings.cs

@@ -0,0 +1,6 @@
+namespace TinfoilVibeServer.Models;
+
+public class IndexBuilderSettings
+{
+    public string ApiBaseUrl { get; set; } = "http://tinfoil.localhost";
+}

TinfoilVibeServer/Properties/launchSettings.json

@@ -5,7 +5,7 @@
       "commandName": "Project",
       "dotnetRunMessages": true,
       "launchBrowser": false,
-      "applicationUrl": "http://192.168.1.145:80",
+      "applicationUrl": "http://192.168.1.145:80;http://tinfoil.localhost:8080;http://tinfoil.ecenshu.net",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
       }

TinfoilVibeServer/Services/IndexBuilderService.cs

@@ -2,6 +2,7 @@
 using System.Text.Json;
 using System.Text.RegularExpressions;
 using LibHac.Ncm;
+using Microsoft.Extensions.Options;
 using TinfoilVibeServer.Models;
 
 namespace TinfoilVibeServer.Services;
@@ -12,6 +13,7 @@ public sealed class IndexBuilderService: IHostedService
 {
     private const string CacheFileName = "indexcache.json";
 
+    private readonly IOptions<IndexBuilderSettings> _options;
     private readonly ISnapshotService _snapshotService;
     private readonly TitleDatabaseService _titleDb;
     private readonly IConfiguration _configuration;
@@ -20,11 +22,13 @@ public sealed class IndexBuilderService: IHostedService
 
     private readonly SemaphoreSlim _lock = new(1, 1);
     public IndexBuilderService(
+        IOptions<IndexBuilderSettings> options,
         ISnapshotService snapshotService,
         TitleDatabaseService titleDb,
         IConfiguration configuration,
         ILogger<IndexBuilderService> logger)
     {
+        _options = options;
         _snapshotService = snapshotService;
         _titleDb = titleDb;
         _configuration = configuration;
@@ -32,7 +36,7 @@ public sealed class IndexBuilderService: IHostedService
         _cachePath = Path.Combine(AppContext.BaseDirectory, CacheFileName);
     }
 
-    public IndexDto Build()
+    public IndexDto Build(HttpContext httpContext)
     {
         // 1️⃣  Load cache if it exists
         var cached = LoadCache();
@@ -54,7 +58,7 @@ public sealed class IndexBuilderService: IHostedService
 
         _logger.LogInformation("Building index (snapshot size={Count})", snapshot.Files.Count);
         // 3️⃣  Build new index from snapshot entries
-        var files = ParseSnapshotFiles(snapshot);
+        var files = ParseSnapshotFiles(snapshot, new Uri(httpContext.Request.Scheme + "://" + httpContext.Request.Host + httpContext.Request.PathBase));
 
         var directories = _configuration.GetSection("Directories")
                                         .Get<string[]>() ?? Array.Empty<string>();
@@ -69,7 +73,7 @@ public sealed class IndexBuilderService: IHostedService
         return index;
     }
 
-    private List<List<FileDto>> ParseSnapshotFiles(SnapshotService.ROMSnapshot snapshot)
+    private List<List<FileDto>> ParseSnapshotFiles(SnapshotService.ROMSnapshot snapshot, Uri baseUri)
     {
         var files = snapshot.Files
             .Where(e => e.Titles.Count > 0)
@@ -108,9 +112,16 @@ public sealed class IndexBuilderService: IHostedService
                         }
                     }
 
-                    var url = $"http://192.168.1.145/{name}[{titleId}][v{versionNumberParsed}][{patchOrApp}].nsp";
-
-                    fileDtos.Add(new FileDto(url, e.Size));
+                    var fileName =Uri.EscapeDataString($"{name}[{titleId}][v{versionNumberParsed}][{patchOrApp}].nsp");
+                    var url = $"{baseUri.ToString().TrimEnd('/')}/{fileName}";
+                    if (Uri.IsWellFormedUriString(url, UriKind.Absolute))
+                    {
+                        fileDtos.Add(new FileDto(url, e.Size));
+                    }
+                    else
+                    {
+                        _logger.LogWarning("Invalid URL for {TitleId}: {Url}", titleId, url);
+                    }
                 }
 
                 return fileDtos;
@@ -150,8 +161,10 @@ public sealed class IndexBuilderService: IHostedService
 
     public Task StartAsync(CancellationToken cancellationToken)
     {
-        Build();
-        this._snapshotService.SnapshotRebuilt += InvalidateIndex;
+        var url = new Uri(_options.Value.ApiBaseUrl);
+        var host = url.Host;
+        Build(new DefaultHttpContext {HttpContext = { Request = { Host = new HostString(host), Scheme = url.Scheme, Path = new PathString(url.AbsolutePath)}}});
+        _snapshotService.SnapshotRebuilt += InvalidateIndex;
         return Task.CompletedTask;
     }
 

TinfoilVibeServer/Services/SnapshotService.cs

@@ -649,7 +649,7 @@ public sealed class SnapshotService : IDisposable, ISnapshotService, IHostedServ
 
     public class ROMSnapshot
     {
-        public string Hash { get; set; }
+        public string? Hash { get; set; }
         public IReadOnlyList<FileEntry> Files { get; set; } = new List<FileEntry>();
     }
 
@@ -664,8 +664,9 @@ public sealed class SnapshotService : IDisposable, ISnapshotService, IHostedServ
         new Timer(_ => DebounceElapsed(), null, Timeout.Infinite, Timeout.Infinite);
     }
 
-    public async Task StopAsync(CancellationToken cancellationToken)
+    public Task StopAsync(CancellationToken cancellationToken)
     {
         Dispose();
+        return Task.CompletedTask;
     }
 }

TinfoilVibeServer/TinfoilVibeServer.csproj

@@ -24,18 +24,22 @@
         <DependentUpon>appsettings.json</DependentUpon>
       </Content>
       <Content Remove="obj\**" />
+      <AdditionalFiles Include="..\libhac\src\LibHac\bin\Release\net8.0\LibHac.dll">
+        <Link>LibHac.dll</Link>
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </AdditionalFiles>
     </ItemGroup>
 
     <ItemGroup>
         <!-- libhac ships a native helper called Ryujinx.HLE.HOS.Native.dll.
              The build script copies it to the output folder automatically. -->
-        <None Update="..\libhac\src\LibHac\bin\Release\net8.0\LibHac.dll" CopyToOutputDirectory="PreserveNewest" />
+        <None Update="..\Dependencies\LibHac.dll" CopyToOutputDirectory="PreserveNewest" />
         <None Remove="obj\**" />
     </ItemGroup>
 
     <ItemGroup>
       <Reference Include="LibHac">
-        <HintPath>..\libhac\src\LibHac\bin\Release\net8.0\LibHac.dll</HintPath>
+        <HintPath>..\Dependencies\LibHac.dll</HintPath>
       </Reference>
     </ItemGroup>
 

TinfoilVibeServer/appsettings.json

@@ -20,6 +20,9 @@
     "SnapshotFile": "index.tfl",
     "SnapshotBackupFile": "snapshot.bin"
   },
+  "IndexBuilder": {
+    "ApiBaseUrl": "http://tinfoil.localhost:80"
+  },
   "TitleDb": {
     "CountryCode": "AU",
     "Language": "en",

TinfoilVibeServerTest/Tests/BasicAuthMiddlewareTests.cs

@@ -31,7 +31,7 @@ namespace TinfoilVibeServerTest.Tests
             _middleware = new BasicAuthMiddleware(_next);
         }
 
-        private HttpContext CreateContext(string authHeader = null, string ip = "127.0.0.1", int? uid = null)
+        private HttpContext CreateContext(string authHeader = "", string ip = "127.0.0.1", int? uid = null)
         {
             var ctx = new DefaultHttpContext();
             ctx.Connection.RemoteIpAddress = IPAddress.Parse(ip);