AutoRefreshTokenHttpMessageHandler 1.1.1

There is a newer version of this package available.
See the version list below for details.
dotnet add package AutoRefreshTokenHttpMessageHandler --version 1.1.1                
NuGet\Install-Package AutoRefreshTokenHttpMessageHandler -Version 1.1.1                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="AutoRefreshTokenHttpMessageHandler" Version="1.1.1" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add AutoRefreshTokenHttpMessageHandler --version 1.1.1                
#r "nuget: AutoRefreshTokenHttpMessageHandler, 1.1.1"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install AutoRefreshTokenHttpMessageHandler as a Cake Addin
#addin nuget:?package=AutoRefreshTokenHttpMessageHandler&version=1.1.1

// Install AutoRefreshTokenHttpMessageHandler as a Cake Tool
#tool nuget:?package=AutoRefreshTokenHttpMessageHandler&version=1.1.1                

Logo AutoRefreshTokenHttpMessageHandler

Build Status Nuget version

This is a thread-safe implementation of a DelegatingHandler, available as Nuget package, that automatically refreshes the access token when the access token expires whilst not serializing all requests. Most implementations use a lock internally which essentially makes all async actions synchronous again. This implementation only blocks during the actual refresh. Inspired by Bryan Helms' Thread-Safe Auth Token Store Using ConcurrentDictionary and AsyncLazy.

Quickstart

var builder = WebApplication.CreateBuilder(args);

builder.Services.Configure<TokenOptions>(configuration.GetRequiredSection("MyClient"))
    .AddTransient<TokenDelegatingHandler>()
    .AddHttpClient<ITokenAuthenticationService, TokenAuthenticationService>()
    .ConfigureHttpClient(c => c.BaseAddress = new Uri("http://auth.myservice.com")).Services

Custom service:

builder.Services.AddHttpClient<MyService>()
    .ConfigureHttpClient(c => c.BaseAddress = new Uri("http://myservice.com"))
    .AddHttpMessageHandler<TokenDelegatingHandler>();

public class MyService(HttpClient client)
{
    public Task<IEnumerable<MyFoo>> GetFoos() => client.GetFromJsonAsync<IEnumerable<Foo>>("/api/v1/foos");
}

...or using Refit:

// ...or Refit:
builder.Services.AddRefitClient<IMyService>()
    .ConfigureHttpClient(c => c.BaseAddress = new Uri("http://myservice.com"))
    .AddHttpMessageHandler<TokenDelegatingHandler>();

public interface IMyService
{
    [Get("/api/v1/foos")]
    Task<IEnumerable<Foo>> GetFooss();
}

Adding Polly to the mix:

builder.Services.AddHttpClient<MyService>()
    .ConfigureHttpClient(c => c.BaseAddress = new Uri("http://myservice.com"))
    .AddHttpMessageHandler<TokenDelegatingHandler>();
    .AddPolicyHandler(HttpPolicyExtensions
        .HandleTransientHttpError()
        .WaitAndRetryAsync(Backoff.DecorrelatedJitterBackoffV2(TimeSpan.FromSeconds(1), 3))
    ).Services

Add options to appsettings:

Client credentials:

{
  "MyClient": {
    "ClientId": "myclient",
    "ClientSecret": "clientsecretclientsecretclientsecret",
    "TokenEndpoint": "http://auth.myservice.com/realms/myapi/protocol/openid-connect/token"
  }
}

...or using username/password:

{
  "MyClient": {
    "ClientId": "myclient",
    "ClientSecret": "clientsecretclientsecretclientsecret",
    "Username": "admin",
    "Password": "mysup3rs4f3p455w0rd",
    "TokenEndpoint": "http://auth.myservice.com/realms/myapi/protocol/openid-connect/token"
  }
}

Attribution

Icon by Freepik

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
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Version Downloads Last updated
1.1.3 145 10/9/2024
1.1.2 110 7/11/2024
1.1.1 136 3/7/2024
1.1.0 153 2/19/2024
1.0.0 102 2/19/2024
1.0.0-beta 93 2/19/2024