Adds windows Auth support (#471)

samples/NativeIISSample/Properties/launchSettings.json

@@ -1,6 +1,6 @@
 {
   "iisSettings": {
-    "windowsAuthentication": false,
+    "windowsAuthentication": true,
     "anonymousAuthentication": true,
     "iisExpress": {
       "applicationUrl": "http://localhost:5762/",

samples/NativeIISSample/Startup.cs

@@ -3,9 +3,11 @@
 
 using System;
 using System.Linq;
+using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Server.IISIntegration;
 
 namespace NativeIISSample
 {
@@ -13,7 +15,7 @@ namespace NativeIISSample
     {
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env, IAuthenticationSchemeProvider authSchemeProvider)
         {
             app.Run(async (context) =>
             {
@@ -38,8 +40,8 @@ namespace NativeIISSample
                 await context.Response.WriteAsync(Environment.NewLine);
 
                 await context.Response.WriteAsync("User: " + context.User.Identity.Name + Environment.NewLine);
-                //var scheme = await authSchemeProvider.GetSchemeAsync(IISDefaults.AuthenticationScheme);
+                var scheme = await authSchemeProvider.GetSchemeAsync(IISDefaults.AuthenticationScheme);
-                //await context.Response.WriteAsync("DisplayName: " + scheme?.DisplayName + Environment.NewLine);
+                await context.Response.WriteAsync("DisplayName: " + scheme?.DisplayName + Environment.NewLine);
 
                 await context.Response.WriteAsync(Environment.NewLine);
 

samples/NativeIISSample/applicationhost.config

@@ -299,12 +299,12 @@
         <application name="Active Server Pages" groupId="ASP" />
       </applicationDependencies>
       <authentication>
-        <anonymousAuthentication enabled="true" userName="" />
+        <anonymousAuthentication enabled="false" userName="" />
         <basicAuthentication enabled="false" />
         <clientCertificateMappingAuthentication enabled="false" />
         <digestAuthentication enabled="false" />
         <iisClientCertificateMappingAuthentication enabled="false"></iisClientCertificateMappingAuthentication>
-        <windowsAuthentication enabled="false">
+        <windowsAuthentication enabled="true">
           <providers>
             <add value="Negotiate" />
             <add value="NTLM" />

src/Microsoft.AspNetCore.Server.IISIntegration/NativeMethods.cs

@@ -75,7 +75,7 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         public unsafe static extern bool http_set_managed_context(IntPtr pHttpContext, IntPtr pvManagedContext);
 
         [DllImport(AspNetCoreModuleDll)]
-        public unsafe static extern int http_get_application_paths([MarshalAs(UnmanagedType.BStr)] out string fullPath, [MarshalAs(UnmanagedType.BStr)] out string virtualPath);
+        public unsafe static extern int http_get_application_properties(ref IISConfigurationData iiConfigData);
 
         [DllImport(AspNetCoreModuleDll)]
         public unsafe static extern bool http_shutdown();
@@ -98,6 +98,9 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         [DllImport(AspNetCoreModuleDll)]
         internal unsafe static extern int http_response_set_known_header(IntPtr pHttpContext, int headerId, byte* pHeaderValue, ushort length, bool fReplace);
 
+        [DllImport(AspNetCoreModuleDll)]
+        public unsafe static extern int http_get_authentication_information(IntPtr pHttpContext, [MarshalAs(UnmanagedType.BStr)] out string authType, out IntPtr token);
+
         [DllImport("kernel32.dll")]
         public static extern IntPtr GetModuleHandle(string lpModuleName);
 
@@ -105,6 +108,5 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         {
             return GetModuleHandle(AspNetCoreModuleDll) != IntPtr.Zero;
         }
-
     }
 }

src/Microsoft.AspNetCore.Server.IISIntegration/Server/IISConfigurationData.cs

@@ -0,0 +1,19 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Runtime.InteropServices;
+
+namespace Microsoft.AspNetCore.Server.IISIntegration
+{
+    [StructLayout(LayoutKind.Sequential)]
+    internal unsafe struct IISConfigurationData
+    {
+        [MarshalAs(UnmanagedType.BStr)]
+        public string pwzFullApplicationPath;
+        [MarshalAs(UnmanagedType.BStr)]
+        public string pwzVirtualApplicationPath;
+        public bool fWindowsAuthEnabled;
+        public bool fBasicAuthEnabled;
+        public bool fAnonymousAuthEnable;
+    }
+}

src/Microsoft.AspNetCore.Server.IISIntegration/Server/IISHttpContext.FeatureCollection.cs

@@ -7,10 +7,12 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Net;
+using System.Security.Claims;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.Features;
+using Microsoft.AspNetCore.Http.Features.Authentication;
 using Microsoft.AspNetCore.WebUtilities;
 using Microsoft.Extensions.Primitives;
 
@@ -22,7 +24,8 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
                                             IHttpUpgradeFeature,
                                             IHttpConnectionFeature,
                                             IHttpRequestLifetimeFeature,
-                                            IHttpRequestIdentifierFeature
+                                            IHttpRequestIdentifierFeature,
+                                            IHttpAuthenticationFeature
     {
         // NOTE: When feature interfaces are added to or removed from this HttpProtocol implementation,
         // then the list of `implementedFeatures` in the generated code project MUST also be updated.
@@ -223,6 +226,14 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
             set => TraceIdentifier = value;
         }
 
+        ClaimsPrincipal IHttpAuthenticationFeature.User
+        {
+            get => User;
+            set => User = value;
+        }
+
+        public IAuthenticationHandler Handler { get; set; }
+
         object IFeatureCollection.this[Type key]
         {
             get => FastFeatureGet(key);

src/Microsoft.AspNetCore.Server.IISIntegration/Server/IISHttpContext.Features.cs

@@ -27,6 +27,7 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         private static readonly Type ISessionFeatureType = typeof(global::Microsoft.AspNetCore.Http.Features.ISessionFeature);
         private static readonly Type IHttpBodyControlFeatureType = typeof(global::Microsoft.AspNetCore.Http.Features.IHttpBodyControlFeature);
         private static readonly Type IHttpSendFileFeatureType = typeof(global::Microsoft.AspNetCore.Http.Features.IHttpSendFileFeature);
+        private static readonly Type IISHttpContextType = typeof(IISHttpContext);
 
         private object _currentIHttpRequestFeature;
         private object _currentIHttpResponseFeature;
@@ -61,6 +62,7 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
             _currentIHttpMinRequestBodyDataRateFeature = this;
             _currentIHttpMinResponseDataRateFeature = this;
             _currentIHttpBodyControlFeature = this;
+            _currentIHttpAuthenticationFeature = this;
         }
 
         internal object FastFeatureGet(Type key)
@@ -133,6 +135,11 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
             {
                 return _currentIHttpSendFileFeature;
             }
+            if (key == IISHttpContextType)
+            {
+                return this;
+            }
+
             return ExtraFeatureGet(key);
         }
 
@@ -224,6 +231,10 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
             {
                 _currentIHttpSendFileFeature = feature;
                 return;
+            }
+            if (key == IISHttpContextType)
+            {
+                throw new InvalidOperationException("Cannot set IISHttpContext in feature collection");
             };
             ExtraFeatureSet(key, feature);
         }

src/Microsoft.AspNetCore.Server.IISIntegration/Server/IISHttpContext.cs

@@ -10,9 +10,12 @@ using System.IO;
 using System.IO.Pipelines;
 using System.Net;
 using System.Runtime.InteropServices;
+using System.Security.Claims;
+using System.Security.Principal;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.HttpSys.Internal;
 using Microsoft.AspNetCore.WebUtilities;
@@ -57,7 +60,11 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         private CurrentOperationType _currentOperationType;
         private Task _currentOperation = Task.CompletedTask;
 
-        internal unsafe IISHttpContext(PipeFactory pipeFactory, IntPtr pHttpContext)
+        private const string NtlmString = "NTLM";
+        private const string NegotiateString = "Negotiate";
+        private const string BasicString = "Basic";
+
+        internal unsafe IISHttpContext(PipeFactory pipeFactory, IntPtr pHttpContext, IISOptions options)
             : base((HttpApiTypes.HTTP_REQUEST*)NativeMethods.http_get_raw_request(pHttpContext))
         {
             _thisHandle = GCHandle.Alloc(this);
@@ -120,6 +127,15 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
                 HttpResponseHeaders = new HeaderCollection(); // TODO Optimize for known headers
                 ResponseHeaders = HttpResponseHeaders;
 
+                if (options.ForwardWindowsAuthentication)
+                {
+                    WindowsUser = GetWindowsPrincipal();
+                    if (options.AutomaticAuthentication)
+                    {
+                        User = WindowsUser;
+                    }
+                }
+
                 ResetFeatureCollection();
             }
 
@@ -146,7 +162,8 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         public int LocalPort { get; set; }
         public string RequestConnectionId { get; set; }
         public string TraceIdentifier { get; set; }
-
+        public ClaimsPrincipal User { get; set; }
+        internal WindowsPrincipal WindowsUser { get; set; } 
         public Stream RequestBody { get; set; }
         public Stream ResponseBody { get; set; }
         public IPipe Input { get; set; }
@@ -827,7 +844,10 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
                     // TODO: dispose managed state (managed objects).
                     _thisHandle.Free();
                 }
-
+                if (WindowsUser?.Identity is WindowsIdentity wi)
+                {
+                    wi.Dispose();
+                }
                 disposedValue = true;
             }
         }
@@ -851,5 +871,21 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
             Write,
             Flush
         }
+
+        private WindowsPrincipal GetWindowsPrincipal()
+        {
+            var hr = NativeMethods.http_get_authentication_information(_pHttpContext, out var authenticationType, out var token);
+
+            if (hr == 0 && token != IntPtr.Zero && authenticationType != null)
+            {
+                if ((authenticationType.Equals(NtlmString, StringComparison.OrdinalIgnoreCase)
+                    || authenticationType.Equals(NegotiateString, StringComparison.OrdinalIgnoreCase)
+                    || authenticationType.Equals(BasicString, StringComparison.OrdinalIgnoreCase)))
+                {
+                    return new WindowsPrincipal(new WindowsIdentity(token, authenticationType));
+                }
+            }
+            return null;
+        }
     }
 }

src/Microsoft.AspNetCore.Server.IISIntegration/Server/IISHttpContextOfT.cs

@@ -3,9 +3,10 @@
 
 using System;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Hosting.Server;
 using System.Threading;
 using System.IO.Pipelines;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting.Server;
 
 namespace Microsoft.AspNetCore.Server.IISIntegration
 {
@@ -13,8 +14,8 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
     {
         private readonly IHttpApplication<TContext> _application;
 
-        public IISHttpContextOfT(PipeFactory pipeFactory, IHttpApplication<TContext> application, IntPtr pHttpContext)
+        public IISHttpContextOfT(PipeFactory pipeFactory, IHttpApplication<TContext> application, IntPtr pHttpContext, IISOptions options)
-            : base(pipeFactory, pHttpContext)
+            : base(pipeFactory, pHttpContext, options)
         {
             _application = application;
         }

src/Microsoft.AspNetCore.Server.IISIntegration/Server/IISHttpServer.cs

@@ -6,9 +6,12 @@ using System.IO.Pipelines;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Hosting.Server;
 using Microsoft.AspNetCore.Http.Features;
+using Microsoft.Extensions.Options;
 
 namespace Microsoft.AspNetCore.Server.IISIntegration
 {
@@ -19,22 +22,30 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         private static NativeMethods.PFN_ASYNC_COMPLETION _onAsyncCompletion = OnAsyncCompletion;
 
         private IISContextFactory _iisContextFactory;
-
         private PipeFactory _pipeFactory = new PipeFactory();
         private GCHandle _httpServerHandle;
-        private IApplicationLifetime _applicationLifetime;
+        private readonly IApplicationLifetime _applicationLifetime;
+        private readonly IAuthenticationSchemeProvider _authentication;
+        private readonly IISOptions _options;
 
         public IFeatureCollection Features { get; } = new FeatureCollection();
-        public IISHttpServer(IApplicationLifetime applicationLifetime)
+        public IISHttpServer(IApplicationLifetime applicationLifetime, IAuthenticationSchemeProvider authentication, IOptions<IISOptions> options)
         {
             _applicationLifetime = applicationLifetime;
+            _authentication = authentication;
+            _options = options.Value;
+
+            if (_options.ForwardWindowsAuthentication)
+            {
+                authentication.AddScheme(new AuthenticationScheme(IISDefaults.AuthenticationScheme, _options.AuthenticationDisplayName, typeof(IISServerAuthenticationHandler)));
+            }
         }
 
         public Task StartAsync<TContext>(IHttpApplication<TContext> application, CancellationToken cancellationToken)
         {
             _httpServerHandle = GCHandle.Alloc(this);
 
-            _iisContextFactory = new IISContextFactory<TContext>(_pipeFactory, application);
+            _iisContextFactory = new IISContextFactory<TContext>(_pipeFactory, application, _options);
 
             // Start the server by registering the callback
             NativeMethods.register_callbacks(_requestHandler, _shutdownHandler, _onAsyncCompletion, (IntPtr)_httpServerHandle, (IntPtr)_httpServerHandle);
@@ -115,16 +126,18 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
         {
             private readonly IHttpApplication<T> _application;
             private readonly PipeFactory _pipeFactory;
+            private readonly IISOptions _options;
 
-            public IISContextFactory(PipeFactory pipeFactory, IHttpApplication<T> application)
+            public IISContextFactory(PipeFactory pipeFactory, IHttpApplication<T> application, IISOptions options)
             {
                 _application = application;
                 _pipeFactory = pipeFactory;
+                _options = options;
             }
 
             public IISHttpContext CreateHttpContext(IntPtr pHttpContext)
             {
-                return new IISHttpContextOfT<T>(_pipeFactory, _application, pHttpContext);
+                return new IISHttpContextOfT<T>(_pipeFactory, _application, pHttpContext, _options);
             }
         }
     }

src/Microsoft.AspNetCore.Server.IISIntegration/Server/IISServerAuthenticationHandler.cs

@@ -0,0 +1,59 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.Security.Principal;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Http;
+
+namespace Microsoft.AspNetCore.Server.IISIntegration
+{
+    public class IISServerAuthenticationHandler : IAuthenticationHandler
+    {
+        private HttpContext _context;
+        private IISHttpContext _iisHttpContext;
+
+        internal AuthenticationScheme Scheme { get; private set; }
+
+        public Task<AuthenticateResult> AuthenticateAsync()
+        {
+            var user = _iisHttpContext.WindowsUser;
+            if (user != null && user.Identity != null && user.Identity.IsAuthenticated)
+            {
+                return Task.FromResult(AuthenticateResult.Success(new AuthenticationTicket(user, Scheme.Name)));
+            }
+            else
+            {
+                return Task.FromResult(AuthenticateResult.NoResult());
+            }
+        }
+
+        public Task ChallengeAsync(AuthenticationProperties properties)
+        {
+            // We would normally set the www-authenticate header here, but IIS does that for us.
+            _context.Response.StatusCode = 401;
+            return Task.CompletedTask;
+        }
+
+        public Task ForbidAsync(AuthenticationProperties properties)
+        {
+            _context.Response.StatusCode = 403;
+            return Task.CompletedTask;
+        }
+
+        public Task InitializeAsync(AuthenticationScheme scheme, HttpContext context)
+        {
+            _iisHttpContext = context.Features.Get<IISHttpContext>();
+            if (_iisHttpContext == null)
+            {
+                throw new InvalidOperationException("No IISHttpContext found.");
+            }
+
+            Scheme = scheme;
+            _context = context;
+
+            return Task.CompletedTask;
+        }
+    }
+}

src/Microsoft.AspNetCore.Server.IISIntegration/WebHostBuilderIISExtensions.cs

@@ -46,19 +46,27 @@ namespace Microsoft.AspNetCore.Hosting
                 hostBuilder.CaptureStartupErrors(true);
 
                 // TODO consider adding a configuration load where all variables needed are loaded from ANCM in one call.
-                var hResult = NativeMethods.http_get_application_paths(out var fullPath, out var virtualPath);
+                var iisConfigData = new IISConfigurationData();
+                var hResult = NativeMethods.http_get_application_properties(ref iisConfigData);
+
                 var exception = Marshal.GetExceptionForHR(hResult);
                 if (exception != null)
                 {
                     throw exception;
                 }
 
-                hostBuilder.UseContentRoot(fullPath);
+                hostBuilder.UseContentRoot(iisConfigData.pwzFullApplicationPath);
                 return hostBuilder.ConfigureServices(services =>
                 {
                     services.AddSingleton<IServer, IISHttpServer>();
-                    services.AddSingleton<IStartupFilter>(new IISServerSetupFilter(virtualPath));
+                    services.AddSingleton<IStartupFilter>(new IISServerSetupFilter(iisConfigData.pwzVirtualApplicationPath));
                     services.AddAuthenticationCore();
+                    services.Configure<IISOptions>(
+                        options =>
+                        {
+                            options.ForwardWindowsAuthentication = iisConfigData.fWindowsAuthEnabled || iisConfigData.fBasicAuthEnabled;
+                        }
+                    );
                 });
             }
 

test/IISIntegration.FunctionalTests/NtlmAuthentationTest.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 #if NET461

test/IISIntegration.IISServerFunctionalTests/AuthenticationTests.cs

@@ -0,0 +1,121 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+#if NET461
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Net;
+using System.Net.Http;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Server.IIS.FunctionalTests;
+using Microsoft.AspNetCore.Server.IntegrationTesting;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Testing;
+using Xunit;
+using Xunit.Abstractions;
+using Xunit.Sdk;
+
+namespace IISIntegration.IISServerFunctionalTests
+{
+    public class AuthenticationTests : LoggedTest
+    {
+        public AuthenticationTests(ITestOutputHelper output) : base(output)
+        {
+        }
+
+        [Fact(Skip = "See https://github.com/aspnet/IISIntegration/issues/424")]
+        public Task Authentication_InProcess_IISExpress()
+        {
+            return Authentication();
+        }
+
+        private async Task Authentication()
+        {
+            var serverType = ServerType.IISExpress;
+            var architecture = RuntimeArchitecture.x64;
+            var testName = $"Authentication_{RuntimeFlavor.CoreClr}";
+            using (StartLog(out var loggerFactory, testName))
+            {
+                var logger = loggerFactory.CreateLogger("AuthenticationTest");
+
+                var deploymentParameters = new DeploymentParameters(Helpers.GetTestSitesPath(), serverType, RuntimeFlavor.CoreClr, architecture)
+                {
+                    ApplicationBaseUriHint = $"http://localhost:5051",
+                    EnvironmentName = "Authentication", // Will pick the Start class named 'StartupAuthentication',
+                    ServerConfigTemplateContent = (serverType == ServerType.IISExpress) ? File.ReadAllText("Http.config") : null,
+                    SiteName = "HttpTestSite", // This is configured in the Http.config
+                    TargetFramework = "netcoreapp2.0",
+                    ApplicationType = ApplicationType.Portable
+                };
+
+                using (var deployer = ApplicationDeployerFactory.Create(deploymentParameters, loggerFactory))
+                {
+                    var deploymentResult = await deployer.DeployAsync();
+                    var httpClient = deploymentResult.HttpClient;
+                    deploymentResult.HttpClient.Timeout = TimeSpan.FromSeconds(5);
+
+                    // Request to base address and check if various parts of the body are rendered & measure the cold startup time.
+                    var response = await RetryHelper.RetryRequest(() =>
+                    {
+                        return deploymentResult.HttpClient.GetAsync(string.Empty);
+                    }, logger, deploymentResult.HostShutdownToken, retryCount: 30);
+
+                    var responseText = await response.Content.ReadAsStringAsync();
+                    try
+                    {
+                        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+                        Assert.Equal("Hello World", responseText);
+
+                        response = await httpClient.GetAsync("/Anonymous");
+                        responseText = await response.Content.ReadAsStringAsync();
+                        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+                        Assert.Equal("Anonymous?True", responseText);
+
+                        response = await httpClient.GetAsync("/Restricted");
+                        responseText = await response.Content.ReadAsStringAsync();
+                        Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);
+                        Assert.Contains("NTLM", response.Headers.WwwAuthenticate.ToString());
+                        Assert.Contains("Negotiate", response.Headers.WwwAuthenticate.ToString());
+
+                        response = await httpClient.GetAsync("/RestrictedNTLM");
+                        responseText = await response.Content.ReadAsStringAsync();
+                        Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);
+                        Assert.Contains("NTLM", response.Headers.WwwAuthenticate.ToString());
+                        // Note we can't restrict a challenge to a specific auth type, the native auth modules always add themselves.
+                        Assert.Contains("Negotiate", response.Headers.WwwAuthenticate.ToString());
+
+                        response = await httpClient.GetAsync("/Forbidden");
+                        responseText = await response.Content.ReadAsStringAsync();
+                        Assert.Equal(HttpStatusCode.Forbidden, response.StatusCode);
+
+                        var httpClientHandler = new HttpClientHandler() { UseDefaultCredentials = true };
+                        httpClient = deploymentResult.CreateHttpClient(httpClientHandler);
+
+                        response = await httpClient.GetAsync("/Anonymous");
+                        responseText = await response.Content.ReadAsStringAsync();
+                        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+                        Assert.Equal("Anonymous?True", responseText);
+
+                        response = await httpClient.GetAsync("/Restricted");
+                        responseText = await response.Content.ReadAsStringAsync();
+                        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+                        Assert.NotEmpty(responseText);
+                    }
+                    catch (XunitException)
+                    {
+                        logger.LogWarning(response.ToString());
+                        logger.LogWarning(responseText);
+                        throw;
+                    }
+                }
+            }
+        }
+    }
+}
+#elif NETCOREAPP2_0
+#else
+#error Target frameworks need to be updated
+#endif

test/IISIntegration.IISServerFunctionalTests/HelloWorldTests.cs

@@ -21,7 +21,7 @@ namespace Microsoft.AspNetCore.Server.IIS.FunctionalTests
         {
         }
 
-        [Fact( Skip ="See https://github.com/aspnet/IISIntegration/issues/424")]
+        [Fact(Skip = "See https://github.com/aspnet/IISIntegration/issues/424")]
         public Task HelloWorld_InProcess_IISExpress_CoreClr_X64_Portable()
         {
             return HelloWorld(RuntimeFlavor.CoreClr, ApplicationType.Portable);

test/IISIntegration.IISServerFunctionalTests/Http.config

@@ -1026,4 +1026,14 @@
       </handlers>
     </system.webServer>
   </location>
+  <location path="HttpTestSite">
+    <system.webServer>
+      <security>
+        <authentication>
+          <anonymousAuthentication enabled="true" />
+          <windowsAuthentication enabled="true" />
+        </authentication>
+      </security>
+    </system.webServer>
+  </location>
 </configuration>

test/IISTestSite/StartupAuthentication.cs

@@ -0,0 +1,80 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.Security.Principal;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Server.IISIntegration;
+using Microsoft.Extensions.Logging;
+using Xunit;
+
+namespace IISTestSite
+{
+    public class StartupAuthentication
+    {
+        public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
+        {
+            // Simple error page without depending on Diagnostics.
+            app.Use(async (context, next) =>
+            {
+                try
+                {
+                    await next();
+                }
+                catch (Exception ex)
+                {
+                    if (context.Response.HasStarted)
+                    {
+                        throw;
+                    }
+
+                    context.Response.Clear();
+                    context.Response.StatusCode = 500;
+                    await context.Response.WriteAsync(ex.ToString());
+                }
+            });
+
+            app.Use((context, next) =>
+            {
+                if (context.Request.Path.Equals("/Anonymous"))
+                {
+                    return context.Response.WriteAsync("Anonymous?" + !context.User.Identity.IsAuthenticated);
+                }
+
+                if (context.Request.Path.Equals("/Restricted"))
+                {
+                    if (context.User.Identity.IsAuthenticated)
+                    {
+                        Assert.IsType<WindowsPrincipal>(context.User);
+                        return context.Response.WriteAsync(context.User.Identity.AuthenticationType);
+                    }
+                    else
+                    {
+                        return context.ChallengeAsync(IISDefaults.AuthenticationScheme);
+                    }
+                }
+
+                if (context.Request.Path.Equals("/Forbidden"))
+                {
+                    return context.ForbidAsync(IISDefaults.AuthenticationScheme);
+                }
+
+                if (context.Request.Path.Equals("/RestrictedNTLM"))
+                {
+                    if (string.Equals("NTLM", context.User.Identity.AuthenticationType, StringComparison.Ordinal))
+                    {
+                        return context.Response.WriteAsync("NTLM");
+                    }
+                    else
+                    {
+                        return context.ChallengeAsync(IISDefaults.AuthenticationScheme);
+                    }
+                }
+
+                return context.Response.WriteAsync("Hello World");
+            });
+        }
+    }
+}