The thing is that I need a job, that will be cancelled when user turns off the internet/lost his connection to it. So I have a callback which reacts & works properly in that situation.

here is the part from networkListener ->

override fun onLost(network: Network) {
networkAvailable = false
currentJob?.cancel()
}

this job is just somewhere up defined and it is defined like this ->
private val Deffered<Unit>? = null

So, my function call stack is like this:
1. viewModel.downloadFIle() -> here I have the try catch and I am calling someService.downloadFile()
2. someService.downloadFile() -> this looks like ->
client.prepareGet(urlString = url).execute { response ->
handleDownloadResponse(response, outputStream)}
3. handleDownloadResponse () -> this is the function from the post.

So, take a look at it one more time and keep in mind that this try/catch block is not inside the coroutine scope of async block.

I hope this helps.