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kotlinlang

Hello!

Who may help with information about how to implement a “response wrapper” pattern in the ktor-client.

For example, has a model object User.

```
data User(name: String)
```

Response from server with a wrapper:

Success response:
```
 {
   "data": {"name":"Mark Watney"},
   "error": null
 }
```

Business error respose:
``` 
 {

 	"data": null
 	"error": { ... }
 }
```

In android I can use something like an interceptor or an adapter in library like Retrofit, but what about ktor-client?

Ktor has a JsonFeature that can parse the response for you

There is no problem with json, a problem with a common data/error response. Now I am seeing Feature in ktor-client, maybe it will help me intercept server response and unwrap it.

Why don't you do `@Serializable Wrapper&lt;T&gt;(val data: T, val error: Error)` N

<https://github.com/ktorio/ktor/issues/1019>