Microsoft.Extensions.Http 10.0.0-preview.3.25171.5

About

Microsoft.Extensions.Http package provides AddHttpClient extension methods for IServiceCollection, IHttpClientFactory interface and its default implementation. This provides the ability to set up named HttpClient configurations in a DI container and later retrieve them via an injected IHttpClientFactory instance.

Key Features

  • The package allows to fluently set up multiple HttpClient configurations for applications that use DI via AddHttpClient extension method.
  • HttpClientFactory caches HttpMessageHandler instances per configuration name, which allows to reuse resources between HttpClient instances to avoid port exhaustion.
  • HttpClientFactory manages lifetime of HttpMessageHandler instances and recycles connections to track DNS changes.

How to Use

Note that lifetime management of HttpClient instances created by HttpClientFactory is completely different from instances created manually. The strategies are to use either short-lived clients created by HttpClientFactory or long-lived clients with PooledConnectionLifetime set up. For more information, see the HttpClient lifetime management section in the conceptual docs and Guidelines for using HTTP clients.

Configuring HttpClient

builder.Services.AddHttpClient("foo"); // adding an HttpClient named "foo" with a default configuration

builder.Services.AddHttpClient("example", c => c.BaseAddress = new Uri("https://www.example.com")) // configuring HttpClient itself
    .AddHttpMessageHandler<MyAuthHandler>() // adding additional delegating handlers to form a message handler chain
    .ConfigurePrimaryHttpMessageHandler(b => new HttpClientHandler() { AllowAutoRedirect = false }) // configuring primary handler
    .SetHandlerLifetime(TimeSpan.FromMinutes(30)); // changing the handler recycling interval

Using the configured HttpClient

public class MyService
{
    public MyService(IHttpClientFactory httpClientFactory)
    {
        _httpClientFactory = httpClientFactory; // injecting the factory
    }

    private Task<string> GetExampleAsync(Uri uri, CancellationToken ct)
    {
        HttpClient exampleClient = _httpClientFactory.CreateClient("example"); // creating the client for the specified name
        return exampleClient.GetStringAsync(uri, ct); // using the client
    }
}

Main Types

The main types provided by this library are:

  • IHttpClientFactory
  • IHttpMessageHandlerFactory
  • HttpClientFactoryServiceCollectionExtensions

Additional Documentation

Feedback & Contributing

Microsoft.Extensions.Http is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Showing the top 20 packages that depend on Microsoft.Extensions.Http.

Packages Downloads
AspNetCore.HealthChecks.OpenIdConnectServer
HealthChecks.OpenIdConnectServer is the health check package for OpenIdConnect servers
 187
AspNetCore.HealthChecks.OpenIdConnectServer
HealthChecks.OpenIdConnectServer is the health check package for OpenIdConnect servers
 66
AspNetCore.HealthChecks.OpenIdConnectServer
HealthChecks.OpenIdConnectServer is the health check package for OpenIdConnect servers
 27
prometheus-net
.NET client library for the Prometheus monitoring and alerting system
 26
prometheus-net.AspNetCore
ASP.NET Core middleware and stand-alone Kestrel server for exporting metrics to Prometheus
 26
prometheus-net
.NET client library for the Prometheus monitoring and alerting system
 25
Sentry.Extensions.Logging
Official Microsoft.Extensions.Logging integration for Sentry - Open-source error tracking that helps developers monitor and fix crashes in real time.
 25
AspNetCore.HealthChecks.UI
HealthChecks.UI Is a ASP.NET Core UI viewer of ASP.NET Core HealthChecks.For more information see https://github.com/Xabaril/AspNetCore.Diagnostics.HealthChecks
 24
Grpc.Net.ClientFactory
HttpClientFactory integration the for gRPC .NET client
 24
prometheus-net
.NET client library for the Prometheus monitoring and alerting system
 24

https://go.microsoft.com/fwlink/?LinkID=799421

.NET Framework 4.6.2

.NET Standard 2.0

.NET 10.0

.NET 9.0

.NET 8.0

Version Downloads Last updated
10.0.0-rc.2.25502.107 5 10/16/2025
10.0.0-rc.1.25451.107 5 09/11/2025
10.0.0-preview.7.25380.108 6 08/14/2025
10.0.0-preview.6.25358.103 7 07/17/2025
10.0.0-preview.5.25277.114 11 06/09/2025
10.0.0-preview.4.25258.110 20 05/15/2025
10.0.0-preview.3.25171.5 15 04/13/2025
10.0.0-preview.2.25163.2 15 03/20/2025
10.0.0-preview.1.25080.5 15 02/27/2025
9.0.10 5 10/16/2025
9.0.9 4 09/11/2025
9.0.8 6 08/07/2025
9.0.7 8 07/09/2025
9.0.6 12 06/12/2025
9.0.5 16 05/15/2025
9.0.4 14 04/12/2025
9.0.3 17 03/16/2025
9.0.2 15 02/25/2025
9.0.1 14 01/21/2025
9.0.0 21 11/21/2024
9.0.0-rc.2.24473.5 17 11/21/2024
9.0.0-rc.1.24431.7 18 10/03/2024
9.0.0-preview.7.24405.7 15 10/08/2024
9.0.0-preview.6.24327.7 18 09/05/2024
9.0.0-preview.5.24306.7 20 10/08/2024
9.0.0-preview.4.24266.19 20 10/07/2024
9.0.0-preview.3.24172.9 18 10/08/2024
9.0.0-preview.2.24128.5 18 10/08/2024
9.0.0-preview.1.24080.9 19 06/06/2024
8.0.1 17 11/21/2024
8.0.0 25 03/04/2024
8.0.0-rc.2.23479.6 14 10/08/2024
8.0.0-rc.1.23419.4 16 10/08/2024
8.0.0-preview.7.23375.6 19 10/08/2024
8.0.0-preview.6.23329.7 18 10/08/2024
8.0.0-preview.5.23280.8 15 10/08/2024
8.0.0-preview.4.23259.5 16 10/08/2024
8.0.0-preview.3.23174.8 17 10/08/2024
8.0.0-preview.2.23128.3 17 10/08/2024
8.0.0-preview.1.23110.8 18 10/08/2024
7.0.0 20 12/02/2022
7.0.0-rc.2.22472.3 18 10/08/2024
7.0.0-rc.1.22426.10 21 10/08/2024
7.0.0-preview.7.22375.6 17 10/08/2024
7.0.0-preview.6.22324.4 14 10/08/2024
7.0.0-preview.5.22301.12 19 10/08/2024
7.0.0-preview.4.22229.4 17 10/08/2024
7.0.0-preview.3.22175.4 14 10/05/2024
7.0.0-preview.2.22152.2 17 10/08/2024
7.0.0-preview.1.22076.8 16 10/08/2024
6.0.2-mauipre.1.22054.8 18 02/02/2022
6.0.1 19 11/21/2024
6.0.0 36 02/01/2022
6.0.0-rc.2.21480.5 18 10/08/2024
6.0.0-rc.1.21451.13 17 10/08/2024
6.0.0-preview.7.21377.19 17 10/08/2024
6.0.0-preview.6.21352.12 15 10/04/2024
6.0.0-preview.5.21301.5 19 10/08/2024
6.0.0-preview.4.21253.7 17 10/08/2024
6.0.0-preview.3.21201.4 19 10/08/2024
6.0.0-preview.2.21154.6 17 10/08/2024
6.0.0-preview.1.21102.12 18 10/07/2024
5.0.0 105 12/15/2021
5.0.0-rc.2.20475.5 22 10/08/2024
5.0.0-rc.1.20451.14 19 10/08/2024
5.0.0-preview.8.20407.11 20 10/08/2024
5.0.0-preview.7.20364.11 19 10/08/2024
5.0.0-preview.6.20305.6 18 10/08/2024
5.0.0-preview.5.20278.1 18 10/08/2024
5.0.0-preview.4.20251.6 18 10/08/2024
5.0.0-preview.3.20215.2 19 09/27/2024
5.0.0-preview.2.20160.3 16 10/08/2024
5.0.0-preview.1.20120.4 22 10/08/2024
3.1.32 23 10/08/2024
3.1.31 18 10/08/2024
3.1.30 21 10/08/2024
3.1.29 20 10/08/2024
3.1.28 18 10/08/2024
3.1.27 20 10/08/2024
3.1.26 19 10/05/2024
3.1.25 22 10/08/2024
3.1.24 21 10/08/2024
3.1.23 21 10/08/2024
3.1.22 19 10/08/2024
3.1.21 16 10/08/2024
3.1.20 20 10/08/2024
3.1.19 20 10/04/2024
3.1.18 21 10/08/2024
3.1.17 24 10/04/2024
3.1.16 18 10/08/2024
3.1.15 19 10/08/2024
3.1.14 17 10/08/2024
3.1.13 19 10/08/2024
3.1.12 23 10/08/2024
3.1.11 21 02/06/2022
3.1.10 21 10/02/2024
3.1.9 22 10/08/2024
3.1.8 19 10/05/2024
3.1.7 18 10/08/2024
3.1.6 20 10/08/2024
3.1.5 16 10/08/2024
3.1.4 20 10/04/2024
3.1.3 18 10/06/2024
3.1.2 19 10/08/2024
3.1.1 21 10/08/2024
3.1.0 18 10/02/2024
3.1.0-preview3.19553.2 18 10/08/2024
3.1.0-preview2.19525.4 17 10/08/2024
3.1.0-preview1.19506.1 19 10/08/2024
3.0.3 18 10/08/2024
3.0.2 19 10/08/2024
3.0.1 17 10/08/2024
3.0.0 20 12/10/2021
3.0.0-rc1.19456.10 16 10/05/2024
3.0.0-preview9.19423.4 18 10/04/2024
3.0.0-preview8.19405.4 19 10/08/2024
3.0.0-preview7.19362.4 17 10/08/2024
3.0.0-preview6.19304.6 18 10/08/2024
3.0.0-preview5.19227.9 19 10/08/2024
3.0.0-preview4.19216.2 21 10/08/2024
3.0.0-preview3.19153.1 17 10/08/2024
3.0.0-preview.19074.2 17 10/08/2024
3.0.0-preview.18572.1 17 10/06/2024
2.2.0 19 10/08/2024
2.2.0-preview3-35497 18 10/08/2024
2.2.0-preview2-35157 22 10/08/2024
2.2.0-preview1-35029 18 10/08/2024
2.1.1 20 10/08/2024
2.1.0 21 02/16/2022
2.1.0-rc1-final 19 10/08/2024
2.1.0-preview2-final 18 10/08/2024
2.1.0-preview1-final 22 10/08/2024