AutoRefreshTokenHttpMessageHandler 1.0.0

There is a newer version of this package available.
See the version list below for details.
dotnet add package AutoRefreshTokenHttpMessageHandler --version 1.0.0                
NuGet\Install-Package AutoRefreshTokenHttpMessageHandler -Version 1.0.0                
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="1.0.0" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add AutoRefreshTokenHttpMessageHandler --version 1.0.0                
#r "nuget: AutoRefreshTokenHttpMessageHandler, 1.0.0"                
#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=1.0.0

// Install AutoRefreshTokenHttpMessageHandler as a Cake Tool
#tool nuget:?package=AutoRefreshTokenHttpMessageHandler&version=1.0.0                

Logo AutoRefreshTokenHttpMessageHandler

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 net8.0 is compatible.  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. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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This package is not used by any NuGet packages.

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Version Downloads Last updated
1.1.3 263 10/9/2024
1.1.2 118 7/11/2024
1.1.1 142 3/7/2024
1.1.0 163 2/19/2024
1.0.0 108 2/19/2024
1.0.0-beta 97 2/19/2024