Hi, is there a way to use Ktor 1.6.7 with Coroutines 1.6.0-RC2 on Kotlin/Native to take advantage of...

# ktor

[Damiano Giusti]

Hi, is there a way to use Ktor 1.6.7 with Coroutines 1.6.0-RC2 on Kotlin/Native to take advantage of the new memory model?
I get an error when I try to use the HttpClient on iOS, which is thrown by this function which is called in the init block of HttpClient. Looks like I’m not able to use a Coroutines version different than a native-mt one

[hfhbd]

Currently, you can only use Ktor with a native-mt version, which will be published after 1.6.0 official release.
There is wip to support non native-mt version: https://github.com/ktorio/ktor/tree/e5l/coroutines

[Damiano Giusti]

I see, thanks! I tried with coroutines 1.5.2-native-mt, and now the only limitation on iOS is that suspend functions must be called from the main thread

[rudolf.hladik]

I use

kotlin = "1.6.0"
coroutines = "1.6.0-RC"
ktorVer = "1.6.2-native-mm-eap-196"

with

# enable new native memory model
kotlin.native.binary.memoryModel=experimental
kotlin.native.binary.freezing=disabled

and it works all fine

[John O'Reilly]

One small gotcha with that version of ktor is that it doesn't support M1.... that support was added I think in 1.6.5

[Damiano Giusti]

thanks guys. @rudolf.hladik do you get the Calling Kotlin suspend functions from Swift/Objective-C is currently supported only on main thread error with this setup? I just tried with your configuration but coroutines 1.6.0-RC2 and I’m still getting the error.

Btw Kotlin 1.6.10 has just been released 😄

[hfhbd]

This is still required.

[rudolf.hladik]

I don’t get this error beacause I use Arkitekt usecases library, for K1.6 and new native MM use version 0.2.0-SNAPSHOT-MM . But you can basically use something like this

fun <T> execute(scope: CoroutineScope, suspendBlock: suspend ()-> T, onSuccess: (T) -> Unit, onError: (Throwable) -> Unit): Job {
    // launch on main dispatcher
    return scope.launch {
        runCatching {
            suspendBlock() // suspend block can be called on different dispatcher
        }.fold(onSuccess,onError) // onSuccess, onError called on main
    }
}