Anyone got Ktor Client (2.0.0-beta1) to force a result from http cache using an `only-if-cached` cac...

# ktor

[harry248]

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.

[Aleksei Tirman [JB]]

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

[harry248]

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.

[harry248]

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

[Aleksei Tirman [JB]]

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

[harry248]

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.

[harry248]

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

[Aleksei Tirman [JB]]

Is it about Ktor client for the browser JS target?

[harry248]

No Android / iOS