Is there a websocket server library that supports Kotlin Native?

I don't really get the ios

...Protocol

and

...ProtocolMeta

Let's say I have some code that looks like this:

val player = AVAudioPlayer(soundUrl, null)
                player.delegate = object : AVAudioPlayerDelegateProtocol{
                    override fun audioPlayerDidFinishPlaying(
                        player: AVAudioPlayer,
                        successfully: Boolean
                    ) {
                        ...
                    }
                }

It complains that it needs to override all these ios NSObjectProtocol methods which is probably not something that I want. But when I try to use

AVAudioPlayerDelegateProtocol*Meta*

player.delegate complains that it doesn not conform to

AVAudioPlayerDelegateProtocol

Can I make the delegate work without implementing all these weird NSObjectProtocol methods.?

Is support for developing on the Apple M1 going to improve soon? Specifically, will K/N support running in the simulator on an M1? I’ve been able to get by with just running as an iPad app on my Mac up until yesterday when I tried to add SwiftUI to the app. Preview support relies on being able to run the app in a simulator. I gave up and sadly added another storyboard to the app.

Is there a straightforward way to convert Array<String> to CValuesRef<CPointerVar<ByteVar>>? ❔ IntelliJ is showing the following type in the Quick Documentation: CValuesRef<CPointerVar<gcharVar /* = ByteVarOf<gchar /* = Byte */> /> / = CPointerVarOf<CPointer<ByteVarOf<gchar /* = Byte */>>> */>? I'm wondering if I have correctly deciphered the type (into a human readable version) presented by IntelliJ.

what is the idea around handling objc checked exceptions in kotlin native (docs only really mention the opposite situation. E.g. consider AVAudioPlayer, in swift you deal with it like that:

do {
    try AVAudioPlayer(contentsOf: url)
} catch {
    // handle exception
}

In Kotlin Native it's signature is

public constructor(contentsOfURL: platform.Foundation.NSURL, error: CPointer<ObjCObjectVar<NSError?>>?)

How do you handle error here?

Hi all. We are currently looking into the possibility of running a K/N library on the Hololens 2 which would require compiling to Windows ARM64. I could not find a lot of information on targeting Windows but it seems that at this point only x64 architectures are supported. If anyone has any experience on this, I’d be grateful for pointers.

Hello, I just run my first Hello World with Kotlin Native on macos Next I would like to be able to execute a shell command like

git log --oneline

and capture its output and error output. Any idea how I can do that?

Hello, I am looking for open-source Kotlin-native based CLI tools for inspiration. Any repo that comes to mind?

Any idea how to load a resource file for ios targeted kotlin native tests? Something like this but for ios. https://gist.github.com/dellisd/a1df42787d42b41cd3ce16f573984674#gistcomment-3729700

When building a shared library, is the .klib file cross-compatible or does it just support the builders operating system?

i am trying to use ktor-curl on windows, i figured out that i need msys2 in the default location.. and then it kinda works.. but only when i execute the produced binary through gitbash (i assume the other things need a environment refresh to pick up the new msys2 location or cmd cannot find the required .dll.a file) but .. could i instead configure kotlin-native to statically link/bundle libcurl so that the produced executable "just works" ?

Has someone managed to run all K/N shared code (e.g. view models, including initialization) not in main UI thread?

Is exists an example of creating a tooltip for an image in minGW? I’ve found a lot of documentation and examples (C/win32) but nothing works for me. PS: I can share my code if someone wants.

Noob question, will freezing be necessary if kotlin gets value types

Upon developing a basic program to my horror a critical bug with linking a C library occurs when using Kotlin 1.5.0 (doesn't affect Kotlin 1.4.31):

> Task :linkRandom_numDebugExecutableLinuxX64 FAILED
3 actionable tasks: 3 executed
e: /home/napperley/.konan/dependencies/x86_64-unknown-linux-gnu-gcc-8.3.0-glibc-2.19-kernel-4.9-2/x86_64-unknown-linux-gnu/bin/ld.gold invocation reported errors

The /home/napperley/.konan/dependencies/x86_64-unknown-linux-gnu-gcc-8.3.0-glibc-2.19-kernel-4.9-2/x86_64-unknown-linux-gnu/bin/ld.gold command returned non-zero exit code: 1.
output:
/home/napperley/libsodium-1.0.18/lib/libsodium.so: error: undefined reference to 'getentropy', version 'GLIBC_2.25'
/home/napperley/libsodium-1.0.18/lib/libsodium.so: error: undefined reference to '__explicit_bzero_chk', version 'GLIBC_2.25'
/home/napperley/libsodium-1.0.18/lib/libsodium.so: error: undefined reference to 'getrandom', version 'GLIBC_2.25'

I have tried nearly all forms of C library linking (except for statically linking the user ver of the libsodium lib), which includes the following: • Statically linking the system ver of the lib • Dynamically linking the system ver of the lib • Dynamically linking the user ver of the lib

Hello cross posting here since it seems to be a better channel for asking. The stack trace is the following

e: Compilation failed: IrTypeAliasSymbol expected: Unbound public symbol for public kotlinx.coroutines/CancellationException|null[0]
 * Source files: 
 * Compiler version info: Konan: 1.5 / Kotlin: 1.5.0
 * Output kind: STATIC_CACHE
e: java.lang.IllegalStateException: IrTypeAliasSymbol expected: Unbound public symbol for public kotlinx.coroutines/CancellationException|null[0]

https://kotlinlang.slack.com/archives/C3PQML5NU/p1620671651034400

How do I implement and use Kotlin/Native libraries without a maven repository in gradle? The library will be provided in (.def), .dll/.so/.dylib, .h and .klib files according to the documentation.

val fp = popen(commandToExecute, "r") ?: error("Failed to run command: $command")
    val status = pclose(fp)

I have a windows specific bug and I have. no idea where to start I implemented a function to execute an external command and get its output It works fine on macOS/Linux but it gives a compilation error on windows https://github.com/jmfayard/kotlin-cli-starter/runs/2583168375?check_suite_focus=true#step:5:73 https://github.com/jmfayard/kotlin-cli-starter/blob/9d9b6a8081281db159e80574c872048332bc254c/src/nativeMain/kotlin/io/NativeActuals.kt#L20-L49

Just curious, is there any progress on the new memory management?

Hello!

Char.Companion.toChars

marked deprecated, is there any replacement(perfectly available in KMP)?

Is it possible to call reified functions from Swift? I wrote in KMP a reified function, that returns a class implementing the interface “ScreenState”. Xcode doesn’t prompt me any error, but it crashes at runtime:

Beginner question... Can anyone point me to an example of linking/calling a rust dynamic library from a kotlin native application? I'm expecting some kind of c interop, but the lack of header files in the rust works leaves me a bit puzzled. This is purely for experimental purposes, not for any real world problem.

Can I inspect the contents of a

*.knm

file somehow? Something like

objdump

but for .klib/.knm ? I'm trying to find a place where I'm referencing an internal symbol from my code.

for example, I want to make some changes to the Any type and String type, can I clone the sdk and have my own version of it?

I'm a bit lost on the memory management in KMM obj-c. I have

AvAudioPlayer

which uses a delegate

AVAudioPlayerDelegateProtocol

. Now I wanted to just use an anonymous implementation of that protocol (or a class extending it - they both work the same) and set it more or less like this

player.delegate = object : NSObject(), AVAudioPlayerDelegateProtocol
//or
player.delegate = MyOwnAudioPlayerDelegateImpl()

The problem is that the delegate is nullified at random times. It works if I make the class containing the player extend

AvAudioPlayerDelegateProtocol

and then do

player.delegate = this

. But it's a bit ugly and creates different issues. Does anyone know how I can manage memory reliably in the first scenario?

I want to create a struct from c, but get an exception “Native interop types constructors must not be called directly” , so i use

alloc<*>

instead. Is it a way to invoke constructor function when i call

alloc<*>

? because the params is final in klib, i can not assign value after

alloc<*>

. my code:

memScoped {
    val info = alloc<GrMtlTextureInfo>()
    info.fTexture = _texture.objcPtr() // fTexture is final in klib
    renderTarget = GrBackendRenderTarget(480, 320, 1, info.reinterpret())
}

Hi. Can anyone help me with extension function from Kotlin to swift? Seems like I’m not able to access the extension from Swift

Looks like a while ago we got

Cleaner

for automatic resource deallocation! https://github.com/JetBrains/kotlin-native/blob/master/runtime/src/main/kotlin/kotlin/native/internal/Cleaner.kt

What would be the proper way to call an objective c function that takes a pointer to a boolean? i.e. https://developer.apple.com/documentation/foundation/nsfilemanager/1410277-fileexistsatpath

Anyone having issues returning a native var (e.g. ULongVar) from a suspending function? Im getting a typecast exception from NativePointed to the return type (ULongVar in this instance). Reproducer inside ⬇️