How to use HttpClientHandler with HttpClientFactory in .NET Core

c# .net-core dotnet-httpclient .net-core-2.1 httpclientfactory
Jim Fritchman picture Jim Fritchman · Jun 7, 2018 · Viewed 14.5k times · Source

I want to use the HttpClientFactory that is available in .NET Core 2.1 but I also want to use the HttpClientHandler to utilize the AutomaticDecompression property when creating HttpClients.

I am struggling because the .AddHttpMessageHandler<> takes a DelegatingHandler not a HttpClientHandler.

Does anyone know how to get this to work?

Thanks, Jim

Answer

djaszczurowski picture djaszczurowski · Jun 8, 2018

Actually I'm not using automatic decompression but the way to achieve this is to properly register http client

services.AddHttpClient<MyCustomHttpClient>()
   .ConfigureHttpMessageHandlerBuilder((c) =>
     new HttpClientHandler()
     {
        AutomaticDecompression = System.Net.DecompressionMethods.GZip
     }
   )
   .AddHttpMessageHandler((s) => s.GetService<MyCustomDelegatingHandler>())

Related questions

Add client certificate to .net core Httpclient

I was playing around with .Net Core and building an API that utilizes payment APIs. There's a client certificate that needs to be added to the request for two-way SSL authentication. How can I achieve this in .Net Core using …

Read More
How to configure web proxy for HttpClient created directly via HttpClientFactory?

By directly I mean without Asp.Net Core IoC/DI helpers. I didn't find docs about it and I think my current solution isn't optimal because the handler lifecyle isn't managed by the HttpClientFactory: var proxiedHttpClientHandler = new HttpClientHandler() { Proxy = httpProxy }; _…

Read More
AddTransient, AddScoped and AddSingleton Services Differences

I want to implement dependency injection (DI) in ASP.NET Core. So after adding this code to ConfigureServices method, both ways work. What is the difference between the services.AddTransient and service.AddScoped methods in ASP.NET Core? public void …

Read More