Question 1

How do I integrate RestEase with ASP.NET Core dependency injection?

Accepted Answer

Use the RestEase.HttpClientFactory NuGet package and call services.AddRestEaseClient<T>() in ConfigureServices, which sets up HttpClientFactory integration and allows injecting the API interface into controllers, as explained in the Using HttpClientFactory section.

Question 2

RestEase vs Refit: which is better for .NET REST clients?

Accepted Answer

Both are similar, but RestEase offers more customization as a 'leaky abstraction' on HttpClient and supports .NET Native via source generators. Refit might be simpler for basic cases, while RestEase excels in complex, type-safe scenarios with deeper control.

Question 3

How can I add authentication headers in RestEase?

Accepted Answer

Use [Header] attributes on the interface, method parameters, or properties—for example, [Header("Authorization")] string token—allowing flexible header management as detailed in the Headers section of the README.

Question 4

Does RestEase support streaming responses for file downloads?

Accepted Answer

Yes, methods can return Task<Stream> to handle streaming responses efficiently, using HttpCompletionOption.ResponseHeadersRead for control over body download, as mentioned in the Return Types part.

Question 5

How to implement custom serialization with System.Text.Json in RestEase?

Accepted Answer

Subclass ResponseDeserializer and RequestBodySerializer to override serialization methods, then assign them to the RestClient instance, as shown in the Custom Serializers and Deserializers section, though it requires more setup than default Json.NET.

Question 6

Can RestEase handle non-JSON APIs like XML?

Accepted Answer

Yes, but it requires custom serializers. For example, implement XmlResponseDeserializer by subclassing ResponseDeserializer, as illustrated in the Controlling Serialization section, which adds complexity compared to out-of-the-box JSON support.

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