Hello everyone, Im getting No such element exception - List is empty when changing the configuratio...

# ktor

[Sergioedcigreja]

Hello everyone,

Im getting No such element exception - List is empty when changing the configuration of HttpClient in iOS.

client = HttpClient().config {
expectSuccess = false
install(JsonFeature) {
serializer = defaultSerializer()
}
}

[tseisel]

I just tried this code and it worked fine.
i'm using ktor-client-okhttp and ktor-client-gson on the JVM, maybe your problem comes specifically from the ktor-client-ios implementation.

[Sergioedcigreja]

yeah it only occurs on iOS

[Sergioedcigreja]

i dont have any problems when running on jvm either

[e5l]

Hi @Sergioedcigreja, it’s the known problem. There is no reflection in kotlin-native and you have to call register method on KotlinxSerializer explicitly for now 😞

[Sergioedcigreja]

thats interesting, I must be doing something wrong as I cant reference KotlinxSerializer()

[e5l]

https://ktor.io/clients/http-client/features/json-feature.html

[Sergioedcigreja]

I already had that dependency on the jvm

[Sergioedcigreja]

commonMain {
dependencies {
implementation "io.ktor:ktor-client-json:$ktor_version"
implementation kotlin('stdlib-common')
implementation "io.ktor:ktor-client-core:$ktor_version"
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core-common:1.3.0-M2'
implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime-common:0.11.1"
}
}
commonTest {
dependencies {
implementation kotlin('test-common')
implementation kotlin('test-annotations-common')
}
}
jvmMain {
dependencies {
implementation kotlin('stdlib')
implementation "io.ktor:ktor-client-android:$ktor_version"
implementation "io.ktor:ktor-client-json-jvm:$ktor_version"
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.0-M2'

implementation 'org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.11.1'
implementation "io.ktor:ktor-client-serialization-jvm:$ktor_version"

}
}
jvmTest {
dependencies {
implementation kotlin('test')
implementation kotlin('test-junit')
}
}
iosMain {
dependencies {
implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime-native:$serializer_version"
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core-native:$coroutine_version"

implementation "io.ktor:ktor-client-ios:$ktor_version"
implementation "io.ktor:ktor-client-core-native:$ktor_version"
implementation "io.ktor:ktor-client-json-native:$ktor_version"
implementation "io.ktor:ktor-client-serialization-native:$ktor_version"
}
}
iosTest {
}

[e5l]

Could you create a gist(https://gist.github.com)?

[Sergioedcigreja]

build.gradle

[Sergioedcigreja]

build.gradle

build.gradle

[Sergioedcigreja]

sure

[Sergioedcigreja]

thank you

[e5l]

It looks like "io.ktor:ktor-client-serialization:$ktor_version" is missing in commonMain. It would be easier to config with gradle metadata enabled.

[Sergioedcigreja]

didn't know that dependency existed xD

[Sergioedcigreja]

thank you very much

[Sergioedcigreja]

Sorry to bother you again but I'm getting this error kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen exceptions.ErrorResponse@81a0fbd8

[Sergioedcigreja]

Error response is a @Serializable data class

[Sergioedcigreja]

the error occurs at HttpResponse.receive<ErrorResponse>