Hi there, I am using Ktor 1.5.0 combined with platform specific httpclients (OkHttp & Ios). I have setup the HttpResponseValidator although whenever I receive an http error like 401, instead of catching a custom throwable I made for this case, I am always getting a NoTransformationFoundException. Have you encountered anything similar?

please check this ticket and comments https://youtrack.jetbrains.com/issue/KTOR-1703

Thanks, that helped a lot. I set

expectSuccess = true

, then I receive a ClientRequestException. Finally I can extract the Http status like this and perform any further actions:

val httpStatus = (error as? ResponseException)?.getHttpStatus() ?: 200

fun ResponseException.getHttpStatus(): Int {
    return response.status.value
}

I must say though that the response validator seems a really handy tool I we are awaiting for its issue to be fixed.

I totally agree