Hawxy · Hawxy · Jan 30, 2025 · Jan 30, 2025 · Jan 30, 2025 · Jan 30, 2025
diff --git a/README.md b/README.md
@@ -18,7 +18,7 @@ This library hopes to solve that problem, featuring:
 
  :white_check_mark: `IHttpClientBuilder` extensions, providing handlers to automatically append access tokens to outgoing requests.
 
- This library is compatible with all .NET Standard 2.0 runtimes (.NET 8+ recommended) and is suitable for use in ASP.NET Core and standalone .NET Generic Host applications.
+ This library is compatible with .NET 8+ as well as .NET Framework 4.8 and is suitable for use in ASP.NET Core and standalone .NET Generic Host applications.
 
  ## Install
 

diff --git a/build/Build.cs b/build/Build.cs
@@ -10,7 +10,6 @@
 using Nuke.Common.Tools.DotNet;
 using Nuke.Common.Utilities.Collections;
 using static Nuke.Common.EnvironmentInfo;
-using static Nuke.Common.IO.FileSystemTasks;
 using static Nuke.Common.IO.PathConstruction;
 using static Nuke.Common.Tools.DotNet.DotNetTasks;
 

diff --git a/build/_build.csproj b/build/_build.csproj
@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Nuke.Common" Version="8.1.4" />
+    <PackageReference Include="Nuke.Common" Version="9.0.4" />
   </ItemGroup>
 
 </Project>
diff --git a/samples/Sample.AspNetCore/Sample.AspNetCore.csproj b/samples/Sample.AspNetCore/Sample.AspNetCore.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Grpc.AspNetCore" Version="2.66.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.67.0" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="9.0.0" />
   </ItemGroup>
 

diff --git a/samples/Sample.ConsoleApp/Sample.ConsoleApp.csproj b/samples/Sample.ConsoleApp/Sample.ConsoleApp.csproj
@@ -9,9 +9,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.28.3" />
-    <PackageReference Include="Grpc.Net.ClientFactory" Version="2.66.0" />
-    <PackageReference Include="Grpc.Tools" Version="2.67.0">
+    <PackageReference Include="Google.Protobuf" Version="3.29.2" />
+    <PackageReference Include="Grpc.Net.ClientFactory" Version="2.67.0" />
+    <PackageReference Include="Grpc.Tools" Version="2.68.1">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

diff --git a/src/Auth0Net.DependencyInjection/Auth0Extensions.cs b/src/Auth0Net.DependencyInjection/Auth0Extensions.cs
@@ -91,7 +91,7 @@ private static IHttpClientBuilder AddAuth0AuthenticationClientInternal(this ISer
 
         services.AddSingleton<IAuthenticationApiClient, InjectableAuthenticationApiClient>();
         return services.AddHttpClient<IAuthenticationConnection, HttpClientAuthenticationConnection>()
-#if !NETSTANDARD2_0
+#if !NETFRAMEWORK
             .ConfigurePrimaryHttpMessageHandler(() =>
                 new SocketsHttpHandler()
                 {
@@ -116,7 +116,7 @@ public static IHttpClientBuilder AddAuth0ManagementClient(this IServiceCollectio
         services.AddSingleton<IManagementApiClient, InjectableManagementApiClient>();
 
         return services.AddHttpClient<IManagementConnection, HttpClientManagementConnection>()
-#if !NETSTANDARD2_0
+#if !NETFRAMEWORK
             .ConfigurePrimaryHttpMessageHandler(() =>
                 new SocketsHttpHandler()
                 {

diff --git a/src/Auth0Net.DependencyInjection/Auth0Net.DependencyInjection.csproj b/src/Auth0Net.DependencyInjection/Auth0Net.DependencyInjection.csproj
@@ -1,16 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>net48;net8.0;net9.0</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Version>4.0.0</Version>
+    <Version>5.0.0</Version>
     <Authors>Hawxy</Authors>
     <Description>Dependency Injection, HttpClientFactory &amp; ASP.NET Core extensions for Auth0.NET</Description>
 	<LangVersion>latest</LangVersion>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
-    <Copyright>Hawxy (JT) 2020-2024</Copyright>
+    <Copyright>Hawxy (JT) 2020-2025</Copyright>
     <PackageIcon>icon.png</PackageIcon>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageProjectUrl>https://github.com/Hawxy/Auth0Net.DependencyInjection</PackageProjectUrl>
@@ -21,30 +21,31 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Auth0.AuthenticationApi" Version="7.29.0" />
-    <PackageReference Include="Auth0.ManagementApi" Version="7.29.0" />
+    <PackageReference Include="Auth0.AuthenticationApi" Version="7.32.0" />
+    <PackageReference Include="Auth0.ManagementApi" Version="7.32.0" />
     <PackageReference Include="DotNet.ReproducibleBuilds" Version="1.2.25" PrivateAssets="All" />
-    <PackageReference Include="ZiggyCreatures.FusionCache" Version="1.4.1" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="8.0.1" />
+    <PackageReference Include="ZiggyCreatures.FusionCache" Version="2.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="9.0.1" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
-    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net48' ">
     <PackageReference Include="Microsoft.Extensions.Http" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
     <PackageReference Include="Polyfill" Version="7.4.1" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net8.0' ">
     <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Http.Resilience" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="8.0.0" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net9.0' ">
     <PackageReference Include="Microsoft.Extensions.Http" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Http.Resilience" Version="9.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="9.0.0" />
   </ItemGroup>
-
-
+
   <ItemGroup>
     <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
       <_Parameter1>$(MSBuildProjectName).Tests</_Parameter1>

diff --git a/src/Auth0Net.DependencyInjection/HttpClient/Auth0ResilienceExtensions.cs b/src/Auth0Net.DependencyInjection/HttpClient/Auth0ResilienceExtensions.cs
@@ -0,0 +1,52 @@
+#if NET8_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
+using System.Net;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Http.Resilience;
+using Polly;
+
+namespace Auth0Net.DependencyInjection.HttpClient;
+
+/// <summary>
+/// Extensions used to enhance Auth0 client resilience.
+/// </summary>
+public static class Auth0ResilienceExtensions
+{
+    /// <summary>
+    /// Adds enhanced rate limiting support to the Auth0 Client. This API is experimental.
+    /// </summary>
+    /// <param name="builder"></param>
+    /// <returns></returns>
+    [Experimental("Auth0DIExperimental")]
+    public static IHttpResiliencePipelineBuilder AddAuth0RateLimitResilience(this IHttpClientBuilder builder)
+    {
+        return builder.AddResilienceHandler("RateLimitRetry",
+            static builder =>
+            {
+                // See: https://www.pollydocs.org/strategies/retry.html
+                builder.AddRetry(new HttpRetryStrategyOptions
+                {
+                    // Disable the default handling of Retry-After header
+                    ShouldRetryAfterHeader = false,
+                    DelayGenerator = static args =>
+                    {
+                        if(args.Outcome.Result?.StatusCode is (HttpStatusCode)429
+                           && args.Outcome.Result.Headers.TryGetValues("x-ratelimit-reset", out var headers)
+                           && long.TryParse(headers.First(), out var ticks))
+                        {
+                            var retryAt = DateTimeOffset.FromUnixTimeSeconds(ticks);
+                            var timeSpan = retryAt - DateTimeOffset.UtcNow;
+                            return new ValueTask<TimeSpan?>(timeSpan);
+                        }
+
+                        return new ValueTask<TimeSpan?>((TimeSpan?)null);
+                    },
+
+                    MaxRetryAttempts = 10,
+                    Delay = TimeSpan.FromSeconds(2)
+                });
+            });
+    }
+}
+
+#endif
diff --git a/src/Auth0Net.DependencyInjection/HttpClient/Auth0TokenHandler.cs b/src/Auth0Net.DependencyInjection/HttpClient/Auth0TokenHandler.cs
@@ -1,4 +1,5 @@
-using System.Net.Http.Headers;
+using System.Net.Http;
+using System.Net.Http.Headers;
 using Auth0Net.DependencyInjection.Cache;
 using Microsoft.Extensions.Options;
 

diff --git a/src/Auth0Net.DependencyInjection/HttpClient/Auth0TokenHandlerConfig.cs b/src/Auth0Net.DependencyInjection/HttpClient/Auth0TokenHandlerConfig.cs
@@ -1,4 +1,6 @@
-namespace Auth0Net.DependencyInjection.HttpClient;
+using System.Net.Http;
+
+namespace Auth0Net.DependencyInjection.HttpClient;
 
 /// <summary>
 /// Configuration used by the underlying <see cref="Auth0TokenHandler"/>. 

diff --git a/tests/Auth0Net.DependencyInjection.Tests/Auth0Net.DependencyInjection.Tests.csproj b/tests/Auth0Net.DependencyInjection.Tests/Auth0Net.DependencyInjection.Tests.csproj
@@ -2,19 +2,19 @@
 
   <PropertyGroup>
     <IsPackable>false</IsPackable>
-    <TargetFrameworks>net48;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
 	<LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FakeItEasy" Version="8.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="xunit" Version="2.7.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.7">
+    <PackageReference Include="FakeItEasy" Version="8.3.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="xunit.v3" Version="1.0.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="6.0.0">
+    <PackageReference Include="coverlet.collector" Version="6.0.3">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>