A modern programming language that makes developers happier.

kotlinlang

Anyone got Ktor Client (2.0.0-beta1) to force a result from http cache using an `only-if-cached` cache control header? Ktor always responds with status code 504 even if there is a non-stale result in cache.

Could you please share a code snippet to illustrate your issue?

Configure the client engine with:
```install(HttpCache)```
Send some request:
```httpClient.get("SOME_URL") {
    header(HttpHeaders.CacheControl, "only-if-cached")
}```
Shouldn’t fail with status code 504 if there is a response in the http cache, but it does.

Bildschirmfoto 2022-04-05 um 10.35.02.png

See <https://developer.mozilla.org/en-US/docs/Web/API/Request/cache>

Could you please describe what should be returned from a server for `SOME_URL` endpoint or give a link to public resource?

In our case, it’s a private REST API that delivers JSON. The response contains correct ETag and Cache-Control headers to work properly with the HttpCache.

I’ve created an issue here: <https://youtrack.jetbrains.com/issue/KTOR-4127>

Is it about Ktor client for the browser JS target?