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Does anyone use classes in ktor client like `<http://io.ktor.utils.io|io.ktor.utils.io>.core.Input` or `<http://io.ktor.utils.io|io.ktor.utils.io>.core.Output`? I can't find a description for them and i am affraid it is internal classes which will be deleted.
My problem is that ByteReadChannel is malformed on receive but `io.ktor.utils.i.core.Input` works fine. Can i use `Input` class without fear?
```val channel: Input = httpResponse.receive() //works fine
val channel: ByteReadChannel = httpResponse.receive() // throw exception MalformedInputException: Input length = 1```

As I see `Input` and `Output`  interfaces are public. In Ktor 2.0.0 they will become abstract classes. I think you can use them without fear. <@U01BRS7CT6D> please confirm.

<@U4CP1J0QP> should know better, since he is working on IO API
Also, can you please share the response that throws exception so we can check if it’s a problem on our side?

Yep, you can use `Input`. Could you log an issue about `ByteReadChannel`?

<@U4CP1J0QP>     `<http://io.ktor.utils.io|io.ktor.utils.io>.charsets.MalformedInputException: Input length = 1`
        `at <http://io.ktor.utils.io|io.ktor.utils.io>.charsets.CharsetJVMKt.throwExceptionWrapped(CharsetJVM.kt:325)`
        `at <http://io.ktor.utils.io|io.ktor.utils.io>.charsets.CharsetJVMKt.decode(CharsetJVM.kt:199)`
        `at <http://io.ktor.utils.io|io.ktor.utils.io>.charsets.EncodingKt.decode(Encoding.kt:103)`
        `at <http://io.ktor.utils.io|io.ktor.utils.io>.core.StringsKt.readText(Strings.kt:255)`
        `at <http://io.ktor.utils.io|io.ktor.utils.io>.core.StringsKt.readText$default(Strings.kt:254)`
        `at io.ktor.client.features.json.serializer.KotlinxSerializer.read(KotlinxSerializer.kt:34)`
        `at io.ktor.client.features.json.JsonSerializer$DefaultImpls.read(JsonSerializer.kt:31)`
        `at io.ktor.client.features.json.serializer.KotlinxSerializer.read(KotlinxSerializer.kt:20)`
        `at io.ktor.client.features.json.JsonFeature$Feature$install$2.invokeSuspend(JsonFeature.kt:161)`
        `at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)`
        `at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)`
        `at android.os.Handler.handleCallback(Handler.java:883)`
        `at android.os.Handler.dispatchMessage(Handler.java:100)`
        `at android.os.Looper.loop(Looper.java:214)`
        `at android.app.ActivityThread.main(ActivityThread.java:7356)`
        `at java.lang.reflect.Method.invoke(Native Method)`
        `at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)`
        `at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)`

<@U3AHGKLUW> please file an issue <https://youtrack.jetbrains.com/newIssue?project=KTOR|here> with the details for reproducing  `MalformedInputException` .