Hi all! I deployed a Ktor Kotless app, exposing an endpoint at

<https://api.sebastiankazenbrootguppy.com/topics|https://api.sebastiankazenbrootguppy.com/topics>

. This endpoint returns application/json. When visiting this endpoint in Chrome, I see

HTTP ERROR 406

(you likely do too). However, when I CURL the endpoint, or use the API Gateway test UI, it returns an array of five JSON entities like it's supposed to. Has anyone else encountered HTTP 406 issues with a Ktor Kotless app?

That's because curl has default header

Accept: */*

. However, browsers use more complex headers (e.g. my Firefox sends

text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

which includes

*/*

but in complex expression). My guess is that Kotless don't know to process complex

Accept

header yet. But if you will use

Accept: application/json

in your client - it'll work well.

Hm, @Sebastian Kazenbroot-Guppy does your application works locally the same way? It may be because of APIGateway (and in that case it is Kotless fault) or because of Ktor 🙂

@TanVD sorry, late response: running locally with Ktor, I can access the same JSON endpoint directly in the browser without issue