``` private val client by lazy { HttpClient(engine) { install(JsonFeature) { ...

# ktor

[Niro]

private val client by lazy {
        HttpClient(engine) {
            install(JsonFeature) {
                serializer = KotlinxSerializer(Json.nonstrict).apply {
                    setMapper(Todo::class, Todo.serializer())
                }
            }
            install(WebSockets)
        }
    }

    suspend fun fetchNotes(): List<Todo> {
        val jsonString2 = client.get<String> {
            url("$baseUrl/todos")
            
        }
        return Json.nonstrict.parse(multiNoteSerializer, jsonString2)
    }

[cy]

This is only available at JVM

[Niro]

Ahh so not possible at all.

[cy]

Not all engines support it at all

[Niro]

would it be possible then using the Android “OkHttpEngine”?

[cy]

Yes, but you need to configure okhttp client with config block

[cy]

HttpClient(OkHttp) {
    engine {
        config {
            pingInterval(...)
        }
    }
}