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kotlinlang

<https://gist.github.com/jeremyrempel/ff5821bd099104ea5358a987f32105f1>

Not sure if it's a bug or by design, but I've only ever gotten it working by using the `respond()` overload that takes a `ByteReadChannel` instead of a `String`.

`respond(ByteReadChannel(testInput))` ? That results in same error. `respond(String)` just maps to `respond(ByteReadChannel)`

Is there any practical advantage to using the ktor jsonfeature vs just json.parse() api?

At least until feature Support I/O stream #204

Looks like I was mistaken. Issue isn’t the channel vs string, it just needs a json header so it knows what content to deserialize. Try this:
```
respond(
    content = body,
    headers = headersOf(HttpHeaders.ContentType, "application/json")
)
```

As to your other question, I think the advantage of JsonFeature is it’s a serializer-agnostic API. So you could do something like substitute Gson or Moshi on the JVM side, if you wanted.