Linker is trimming System.Security.Cryptography.X509Certificates even though System.Net.Http references it

[eerhardt]

Repro steps:

1. Clone https://github.com/pranavkm/CarChecker/tree/c2377202826c1b9a427e2b62b08f96d415c829ef
2. Get version 5.0.100-preview.7.20319.6 of the .NET SDK.
3. F:\git\CarChecker\Server> F:\path\to\5.0.100-preview.7.20319.6\dotnet.exe publish
   • Note if you get restore errors, add a nuget source for https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json to the nuget.config file in the repo.
4. cd F:\git\CarChecker\Server\bin\Debug\net5.0\publish\
5. > F:\dotnet\dotnet.exe .\CarChecker.Server.dll
6. Navigate to https://localhost:5001

Notice that the app fails, looking in the dev tools console I see:

crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Could not load type of field 'System.Net.Http.HttpClientHandler:s_dangerousAcceptAnyServerCertificateValidator' (3) due to: Could not resolve type with token 01000072 from typeref (expected class 'System.Security.Cryptography.X509Certificates.X509Certificate2' in assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e') assembly:System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e type:System.Security.Cryptography.X509Certificates.X509Certificate2 member:(null)
System.TypeLoadException: Could not load type of field 'System.Net.Http.HttpClientHandler:s_dangerousAcceptAnyServerCertificateValidator' (3) due to: Could not resolve type with token 01000072 from typeref (expected class 'System.Security.Cryptography.X509Certificates.X509Certificate2' in assembly 'System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e') assembly:System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e type:System.Security.Cryptography.X509Certificates.X509Certificate2 member:(null)
   at System.Reflection.RuntimeConstructorInfo.InternalInvoke(Object obj, Object[] parameters, Boolean wrapExceptions)
   at System.Reflection.RuntimeConstructorInfo.DoInvoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2[[Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeResolverContext, Microsoft.Extensions.DependencyInjection, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[System.Object, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].VisitCallSiteMain(ServiceCallSite callSite, RuntimeResolverContext argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitDisposeCache(ServiceCallSite transientCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2[[Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeResolverContext, Microsoft.Extensions.DependencyInjection, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[System.Object, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].VisitCallSite(ServiceCallSite callSite, RuntimeResolverContext argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__1(ServiceProviderEngineScope p)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[HttpMessageHandlerBuilder](IServiceProvider provider)
   at Microsoft.Extensions.Http.DefaultHttpClientFactory.CreateHandlerEntry(String name)
   at Microsoft.Extensions.Http.DefaultHttpClientFactory.<>c__DisplayClass14_0.<.ctor>b__1()
   at System.Lazy`1[[Microsoft.Extensions.Http.ActiveHandlerTrackingEntry, Microsoft.Extensions.Http, Version=3.1.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].ViaFactory(LazyThreadSafetyMode mode)
   at System.Lazy`1[[Microsoft.Extensions.Http.ActiveHandlerTrackingEntry, Microsoft.Extensions.Http, Version=3.1.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
   at System.Lazy`1[[Microsoft.Extensions.Http.ActiveHandlerTrackingEntry, Microsoft.Extensions.Http, Version=3.1.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].CreateValue()
   at System.Lazy`1[[Microsoft.Extensions.Http.ActiveHandlerTrackingEntry, Microsoft.Extensions.Http, Version=3.1.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].get_Value()
   at Microsoft.Extensions.Http.DefaultHttpClientFactory.CreateHandler(String name)
   at Microsoft.Extensions.Http.DefaultHttpClientFactory.CreateClient(String name)
   at CarChecker.Client.Program.<>c.<Main>b__0_1(IServiceProvider sp)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2[[Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeResolverContext, Microsoft.Extensions.DependencyInjection, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[System.Object, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].VisitCallSiteMain(ServiceCallSite callSite, RuntimeResolverContext argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitDisposeCache(ServiceCallSite transientCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2[[Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeResolverContext, Microsoft.Extensions.DependencyInjection, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[System.Object, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].VisitCallSite(ServiceCallSite callSite, RuntimeResolverContext argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2[[Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeResolverContext, Microsoft.Extensions.DependencyInjection, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[System.Object, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].VisitCallSiteMain(ServiceCallSite callSite, RuntimeResolverContext argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2[[Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeResolverContext, Microsoft.Extensions.DependencyInjection, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[System.Object, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].VisitCallSite(ServiceCallSite callSite, RuntimeResolverContext argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__1(ServiceProviderEngineScope p)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.RuntimeServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[LocalVehiclesStore](IServiceProvider provider)
   at CarChecker.Client.Data.OfflineAccountClaimsPrincipalFactory.CreateUserAsync(RemoteUserAccount account, RemoteAuthenticationUserOptions options)
   at Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteAuthenticationService`3.<GetAuthenticatedUser>d__26[[Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteAuthenticationState, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteUserAccount, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[Microsoft.AspNetCore.Components.WebAssembly.Authentication.ApiAuthorizationProviderOptions, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].MoveNext()
   at Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteAuthenticationService`3.<GetUser>d__25[[Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteAuthenticationState, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteUserAccount, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[Microsoft.AspNetCore.Components.WebAssembly.Authentication.ApiAuthorizationProviderOptions, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].MoveNext()
   at Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteAuthenticationService`3.<GetAuthenticationStateAsync>d__17[[Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteAuthenticationState, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[Microsoft.AspNetCore.Components.WebAssembly.Authentication.RemoteUserAccount, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[Microsoft.AspNetCore.Components.WebAssembly.Authentication.ApiAuthorizationProviderOptions, Microsoft.AspNetCore.Components.WebAssembly.Authentication, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].MoveNext()
   at Microsoft.AspNetCore.Components.Authorization.AuthorizeViewCore.OnParametersSetAsync()
   at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
   at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle)

From looking at the Blazor output folder in F:\git\CarChecker\Server\bin\Debug\net5.0\publish\wwwroot\_framework, I see that there is no System.Security.Cryptography.X509Certificates.dll, which is where X509Certificate2 is contained. However, System.Net.Http.dll has System.Net.Http.HttpClientHandler, which has a static field and property:

        private static Func<HttpRequestMessage, X509Certificate2, X509Chain, SslPolicyErrors, bool> s_dangerousAcceptAnyServerCertificateValidator;

        [Nullable(new byte[] { 1, 1, 2, 2 })]
        public static Func<HttpRequestMessage, X509Certificate2, X509Chain, SslPolicyErrors, bool> DangerousAcceptAnyServerCertificateValidator
        {
            [return: Nullable(new byte[] { 1, 1, 2, 2 })]
            get
            {
                return Volatile.Read<Func<HttpRequestMessage, X509Certificate2, X509Chain, SslPolicyErrors, bool>>(ref HttpClientHandler.s_dangerousAcceptAnyServerCertificateValidator) ?? (Interlocked.CompareExchange<Func<HttpRequestMessage, X509Certificate2, X509Chain, SslPolicyErrors, bool>>(ref HttpClientHandler.s_dangerousAcceptAnyServerCertificateValidator, new Func<HttpRequestMessage, X509Certificate2, X509Chain, SslPolicyErrors, bool>((HttpRequestMessage argument0, X509Certificate2 argument1, X509Chain argument2, SslPolicyErrors argument3) => true), null) ?? HttpClientHandler.s_dangerousAcceptAnyServerCertificateValidator);
            }
        }

Note that in the current configuration, Blazor is using "assembly level" trimming. They haven't yet moved to "member level" trimming for System.* assemblies.

Here is the linker command line being passed during the build:

F:\dotnet\dotnet.exe "F:\dotnet\sdk\5.0.100-preview.7.20319.6\Sdks\Microsoft.NET.ILLink.Tasks\tools\netcoreapp3.0\illink.dll" -x "obj\Debug\net5.0\browser-wasm\typegranularity.trimmerdescriptor.xml"
-x "C:\Users\eerhardt\.nuget\packages\microsoft.net.sdk.razor\5.0.0-preview.7.20325.3\build\netstandard2.0\LinkerWorkaround.xml"
-a "C:\Users\eerhardt\.nuget\packages\blazorinputfile\0.2.0\lib\netstandard2.1\BlazorInputFile.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.authorization\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Authorization.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.authorization\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.Authorization.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.dataannotations.validation\3.2.0\lib\netstandard2.1\Microsoft.AspNetCore.Components.DataAnnotations.Validation.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.forms\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.Forms.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.web\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.Web.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.webassembly\5.0.0-preview.7.20325.3\lib\netstandard2.1\Microsoft.AspNetCore.Components.WebAssembly.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.webassembly.authentication\5.0.0-preview.7.20325.3\lib\netstandard2.1\Microsoft.AspNetCore.Components.WebAssembly.Authentication.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.metadata\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Metadata.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.Abstractions.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.binder\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.Binder.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.fileextensions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.FileExtensions.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.json\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.Configuration.Json.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.dependencyinjection\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.DependencyInjection.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.dependencyinjection.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.DependencyInjection.Abstractions.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.fileproviders.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.FileProviders.Abstractions.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.fileproviders.physical\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.FileProviders.Physical.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.filesystemglobbing\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.FileSystemGlobbing.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.http\3.1.3\lib\netcoreapp3.1\Microsoft.Extensions.Http.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.localization\3.1.3\lib\netcoreapp3.1\Microsoft.Extensions.Localization.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.localization.abstractions\3.1.3\lib\netcoreapp3.1\Microsoft.Extensions.Localization.Abstractions.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.logging\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.Logging.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.logging.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Logging.Abstractions.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.options\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.Options.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.primitives\5.0.0-preview.7.20323.4\lib\netcoreapp3.0\Microsoft.Extensions.Primitives.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.jsinterop\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.JSInterop.dll"
-a "C:\Users\eerhardt\.nuget\packages\microsoft.jsinterop.webassembly\5.0.0-preview.7.20325.3\lib\netstandard2.1\Microsoft.JSInterop.WebAssembly.dll"
-a "C:\Users\eerhardt\.nuget\packages\sceneviewer\0.1.0\lib\netstandard2.0\SceneViewer.dll"
-a "F:\git\CarChecker\Shared\bin\Debug\net5.0\CarChecker.Shared.dll"
-a "obj\Debug\net5.0\browser-wasm\CarChecker.Client.dll"
-reference "C:\Users\eerhardt\.nuget\packages\blazorinputfile\0.2.0\lib\netstandard2.1\BlazorInputFile.dll"
-p copy "BlazorInputFile"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.authorization\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Authorization.dll"
-p copy "Microsoft.AspNetCore.Authorization"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.dll"
-p copy "Microsoft.AspNetCore.Components"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.authorization\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.Authorization.dll"
-p copy "Microsoft.AspNetCore.Components.Authorization"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.dataannotations.validation\3.2.0\lib\netstandard2.1\Microsoft.AspNetCore.Components.DataAnnotations.Validation.dll"
-p copy "Microsoft.AspNetCore.Components.DataAnnotations.Validation"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.forms\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.Forms.dll"
-p copy "Microsoft.AspNetCore.Components.Forms"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.web\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Components.Web.dll"
-p copy "Microsoft.AspNetCore.Components.Web"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.webassembly\5.0.0-preview.7.20325.3\lib\netstandard2.1\Microsoft.AspNetCore.Components.WebAssembly.dll"
-p copy "Microsoft.AspNetCore.Components.WebAssembly"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.webassembly.authentication\5.0.0-preview.7.20325.3\lib\netstandard2.1\Microsoft.AspNetCore.Components.WebAssembly.Authentication.dll"
-p copy "Microsoft.AspNetCore.Components.WebAssembly.Authentication"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.metadata\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.AspNetCore.Metadata.dll"
-p copy "Microsoft.AspNetCore.Metadata"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.dll"
-p copy "Microsoft.Extensions.Configuration"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.Abstractions.dll"
-p copy "Microsoft.Extensions.Configuration.Abstractions"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.binder\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.Binder.dll"
-p copy "Microsoft.Extensions.Configuration.Binder"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.fileextensions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Configuration.FileExtensions.dll"
-p copy "Microsoft.Extensions.Configuration.FileExtensions"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.configuration.json\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.Configuration.Json.dll"
-p copy "Microsoft.Extensions.Configuration.Json"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.dependencyinjection\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.DependencyInjection.dll"
-p copy "Microsoft.Extensions.DependencyInjection"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.dependencyinjection.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.DependencyInjection.Abstractions.dll"
-p copy "Microsoft.Extensions.DependencyInjection.Abstractions"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.fileproviders.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.FileProviders.Abstractions.dll"
-p copy "Microsoft.Extensions.FileProviders.Abstractions"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.fileproviders.physical\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.FileProviders.Physical.dll"
-p copy "Microsoft.Extensions.FileProviders.Physical"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.filesystemglobbing\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.FileSystemGlobbing.dll"
-p copy "Microsoft.Extensions.FileSystemGlobbing"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.http\3.1.3\lib\netcoreapp3.1\Microsoft.Extensions.Http.dll"
-p copy "Microsoft.Extensions.Http"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.localization\3.1.3\lib\netcoreapp3.1\Microsoft.Extensions.Localization.dll"
-p copy "Microsoft.Extensions.Localization"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.localization.abstractions\3.1.3\lib\netcoreapp3.1\Microsoft.Extensions.Localization.Abstractions.dll"
-p copy "Microsoft.Extensions.Localization.Abstractions"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.logging\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.Logging.dll"
-p copy "Microsoft.Extensions.Logging"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.logging.abstractions\5.0.0-preview.7.20323.4\lib\netstandard2.0\Microsoft.Extensions.Logging.Abstractions.dll"
-p copy "Microsoft.Extensions.Logging.Abstractions"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.options\5.0.0-preview.7.20323.4\lib\net5.0\Microsoft.Extensions.Options.dll"
-p copy "Microsoft.Extensions.Options"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.extensions.primitives\5.0.0-preview.7.20323.4\lib\netcoreapp3.0\Microsoft.Extensions.Primitives.dll"
-p copy "Microsoft.Extensions.Primitives"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.jsinterop\5.0.0-preview.7.20325.3\lib\net5.0\Microsoft.JSInterop.dll"
-p copy "Microsoft.JSInterop"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.jsinterop.webassembly\5.0.0-preview.7.20325.3\lib\netstandard2.1\Microsoft.JSInterop.WebAssembly.dll"
-p copy "Microsoft.JSInterop.WebAssembly"
-reference "C:\Users\eerhardt\.nuget\packages\sceneviewer\0.1.0\lib\netstandard2.0\SceneViewer.dll"
-p copy "SceneViewer"
-reference "F:\git\CarChecker\Shared\bin\Debug\net5.0\CarChecker.Shared.dll"
-p copy "CarChecker.Shared"
-reference "obj\Debug\net5.0\browser-wasm\CarChecker.Client.dll"
-p copy "CarChecker.Client"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\Microsoft.CSharp.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\Microsoft.VisualBasic.Core.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\Microsoft.VisualBasic.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\Microsoft.Win32.Primitives.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\Microsoft.Win32.Registry.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.AppContext.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Buffers.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Collections.Concurrent.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Collections.Immutable.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Collections.NonGeneric.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Collections.Specialized.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Collections.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ComponentModel.Annotations.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ComponentModel.DataAnnotations.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ComponentModel.EventBasedAsync.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ComponentModel.Primitives.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ComponentModel.TypeConverter.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ComponentModel.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Configuration.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Console.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Core.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Data.Common.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Diagnostics.Contracts.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Diagnostics.FileVersionInfo.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Drawing.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Dynamic.Runtime.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Globalization.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.IO.Compression.Brotli.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.IO.Compression.FileSystem.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.IO.Compression.ZipFile.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.IO.Compression.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.IO.FileSystem.AccessControl.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.IO.IsolatedStorage.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.IO.Pipes.AccessControl.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Linq.Parallel.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Net.Http.Json.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Net.WebClient.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.AccessControl.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Claims.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Cryptography.Algorithms.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Cryptography.Cng.dll"
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-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Cryptography.Encoding.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Cryptography.OpenSsl.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Cryptography.Primitives.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Cryptography.X509Certificates.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Principal.Windows.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.Principal.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.SecureString.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Security.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ServiceModel.Web.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ServiceProcess.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Text.Encoding.CodePages.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Text.Encoding.Extensions.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Text.Encoding.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Text.Encodings.Web.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Text.Json.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Text.RegularExpressions.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Channels.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Overlapped.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Tasks.Dataflow.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Tasks.Extensions.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Tasks.Parallel.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Tasks.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Thread.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.ThreadPool.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.Timer.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Threading.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Transactions.Local.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Transactions.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.ValueTuple.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Web.HttpUtility.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Web.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Windows.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.Linq.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.ReaderWriter.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.Serialization.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.XDocument.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.XPath.XDocument.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.XPath.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.XmlDocument.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.XmlSerializer.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.Xml.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\System.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\WindowsBase.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\mscorlib.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\lib\net5.0\netstandard.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.netcore.app.runtime.browser-wasm\5.0.0-preview.7.20323.4\runtimes\browser-wasm\native\System.Private.CoreLib.dll"
-reference "C:\Users\eerhardt\.nuget\packages\microsoft.aspnetcore.components.webassembly.httphandler\5.0.0-preview.7.20325.3\lib\netstandard2.1\System.Net.Http.WebAssemblyHttpHandler.dll"
-p skip "System.Net.Http.WebAssemblyHttpHandler"
-out "obj\Debug\net5.0\browser-wasm\linked"
-c copyused -u copyused
--skip-unresolved true 

cc @pranavkm @marek-safar @vitek-karas @sbomer

[sbomer]

I was able to reproduce this. The linker never marked DangerousAcceptAnyServerCertificateValidator, and nothing else seems to pull in System.Security.Cryptography.X509Certificates.dll.

From what I can tell, it is expected behavior - the linker is dropping an assembly that only seems to be referenced on a non-understood reflection path for dependency injection. Note that in assembly-level mode, the linker still scans IL to determine which parts of an assembly are used - it just keeps the whole assembly if any part of it is used (without then scanning the unused parts of the assembly for unused dependencies).

Is there expected to be a static reference somewhere to DangerousAcceptAnyServerCertificateValidator or X509Certificate2 (in code, or a custom root descriptor)?

[eerhardt]

Is there expected to be a static reference somewhere to DangerousAcceptAnyServerCertificateValidator or X509Certificate2 (in code, or a custom root descriptor)?

No. No one is using DangerousAcceptAnyServerCertificateValidator.

[pranavkm]

Untrimmed:

Trimmed:

Why would the assembly reference be removed if the type is still being referenced by the property?

[marek-safar]

I was able to reproduce this. The linker never marked DangerousAcceptAnyServerCertificateValidator, and nothing else seems to pull in System.Security.Cryptography.X509Certificates.dll.

@sbomer that does not seem to match the exception.

private static Func<HttpRequestMessage, X509Certificate2, X509Chain, SslPolicyErrors, bool> s_dangerousAcceptAnyServerCertificateValidator;

has X509Certificate2 as a generic argument, it might be possible that linker is not marking it correctly or something else is wrong.

[sbomer]

that does not seem to match the exception.

@marek-safar Could you clarify? What about the exception indicates that DangerousAcceptAnyServerCertificateValidator was marked? Maybe I am missing something.

Why would the assembly reference be removed if the type is still being referenced by the property?

I'll answer based on my current understanding - please correct me if I'm missing something obvious:

• Why is the referenced assembly System.Security.Cryptography.X509Certificates.dll being removed?

  It's removed because the linker isn't able to see the reference to DangerousAcceptAnyServerCertificateValidator or anything else that depends on that assembly. This is what I understand to be expected behavior. Yes, it is a bit strange to keep types without keeping their dependencies, but that is what copyused does - it "conservatively" keeps all parts of a used assembly, without keeping "unused" dependencies in other assemblies. It is conservative in the sense that it keeps more than it knows it needs to keep, but it doesn't solve the reflection problem.

  To instead keep such dependencies, you could root System.Net.Http or HttpClientHandler for example.

• Why is the assemblyref from System.Net.Http to System.Security.Cryptography.X509Certificates being removed?

  This is the result of the linker sweeping refs to removed assemblies - even for copyused assemblies which may still contain (unused) members referencing the removed assemblies, thereby invalidating the typerefs. We might be able to fix this part - then the typeref would at least find the assemblyref - but the referenced assembly would still not exist, so X509Certificate2 would still not be loaded at runtime.

  We have discussed related issues in Linker removes data from "copy" assemblies #639 and ILLinker removes type forwarders when they are still needed #628.

[MichalStrehovsky]

it "conservatively" keeps all parts of a used assembly, without keeping "unused" dependencies in other assemblies. It is conservative in the sense that it keeps more than it knows it needs to keep, but it doesn't solve the reflection problem.

Does this mean that if a copyused assembly has any unsafe reflection use, it wouldn't issue warnings about it?

[sbomer]

Does this mean that if a copyused assembly has any unsafe reflection use, it wouldn't issue warnings about it?

Yes - or rather, it would only issue warnings about the parts that get marked.

[vitek-karas]

it would only issue warnings about the parts that get marked.

This sounds OK - we still treat it as an app and thus only scan reachable code. So if there's reflection use in reachable code we would warn about it. That says nothing about code which left around due to the assembly-level trimming behavior.

I think that from the point of view of the linker analysis this is desired behavior.

What I don't understand is this:

• The code with the broken assembly ref in it is not reachable (and as far as I can tell from this discussion the app never actually tries to execute it).
• CoreCLR should lazy load/lazy JIT and thus it would never even see the body of the method with the problem - and thus never fail
• Is Mono different in this behaviors?

[sbomer]

CoreCLR should lazy load/lazy JIT and thus it would never even see the body of the method

My understanding is: even though that method isn't executed, the type HttpClientHandler is created dynamically, so it encounters the invalid typeref on the static field at runtime. I don't think it's caused by a mono/coreclr difference.

[pranavkm]

Is this still planned to be fixed for 5.0? Blazor's working around this in the SDK, but doesn't this .NET5 projects too?