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I am looking to switch our HttpClients to use Flurl. However, our HttpClient is currently configured to use Service Discovery via Steeltoe. Basically it's doing this in ConfigureServices:

   services.AddHttpClient<IMyClass, MyClass>().AddHttpMessageHandler<DiscoveryHttpMessageHandler>();

DiscoveryHttpMessageHandler is a custom http message handler in the Steeltoe library (https://github.com/SteeltoeOSS)

How do I access the IHttpClientBuilder with Flurl so I can add this same message hander? Or is there another clean way with Flurl to add a custom message handler for every HttpClient/FlurlClient created?

BrianM
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1 Answers1

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There's a few ways to add a custom message handler with Flurl (such as with a custom factory), but since you're already using IHttpClientFactory, I think the easiest path to get what you want (and the one I'd recommend) is to continue injecting HttpClient into your services as you're doing and wrap them with Flurl inside the service:

public class MyClass : IMyClass
{
    private readonly IFlurlClient _flurlClient;

    public MyService(HttpClient httpClient) {
        _flurlClient = new FlurlClient(httpClient);
    }
}
Todd Menier
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  • We already went through the process of creating a custom factory for Flurl that creates the discovery message handler, but I kinda like your solution too. I will have to pass it by my teammates and see which way they like best. Thank you! – BrianM Mar 09 '21 at 17:03