Hi. Developing multiplatform library for Android and iOS. At the moment don't need anything specific for Android so targeting jvm and iOS. Getting an error on Android application when making a Ktor request call. By the way, I don't get a such error on unit test at commonMain module which runs against jvm. Any ideas what can cause this error?

io.ktor.client.call.NoTransformationFoundException: No transformation found: class io.ktor.utils.io.ByteChannelKt$ByteChannel$1 (Kotlin reflection is not available) -> class xxx.YYY (Kotlin reflection is not available)
    with response from <https://XXX>:
    status: 200 OK
    response headers: 
    cache-control: max-age=600
    , connection: keep-alive
    , content-type: application/json;charset=utf-8
    
        at io.ktor.client.call.HttpClientCall.receive(HttpClientCall.kt:84)

I'd try to use the CIO or OkHttp engine on the JVM and Android. The default engine used on the JVM probably fails on Android for some reason.

Should be something else. Pulling Android engine for jvm

io.ktor:ktor-client-android

FYI, the Android engine is quite barbones. I'd use OkHttp or CIO over it anyday.

Not sure how it is related but changing from

request<R>(path) {
    this.method = methodType
    this.headers.appendAll(headersSupplier())
    this.body = body
}

to

val response = get<String>(path) {
    this.headers.appendAll(headersSupplier())
}

Json.decodeFromString(R::class.serializer(), response)

serializes from string to type

R

Ah yes, you need to explicity setup the

Json

feature.

Any reason I cannot access (not visible, cannot import...)

JsonFeature

on common module? Do I need to include explicit dependency for it? Already included

"org.jetbrains.kotlinx:kotlinx-serialization-json:1.0.0"

Yep, the docs for the clients are not as good as the docs for the server. But the ktor team expanded, and they are working on docs improvements, among other things.