Is it save to use

<http://io.ktor.utils.io|io.ktor.utils.io>.errors.IOException

for all network IO exceptions across platforms?

Can you try writing a Unit Test that throws that Exception?

I can - but that wouldn’t really answer the question

Well it would if you wrote the tests to test it would it not? When you say "save (safe)", what do you mean?

I’m trying to understand if each platform, when it encounters a network error, will throw an instance of IOException

Ahh, OK. Then you should still be able to write tests for that.