Is there an easy way to catch Java exceptions in multiplatform? I want to catch a specific `<http://...

# multiplatform

[bsimmons]

Is there an easy way to catch Java exceptions in multiplatform? I want to catch a specific <http://javax.net|javax.net>.ssl.SSLPeerUnverifiedException but I am only able to catch(e: <http://io.ktor.utils.io|io.ktor.utils.io>.errors.IOException){...} and nothing more specific than that. Any ideas?

[mkrussel]

Create an expect Exception. Then typealias it for JVM and declare it for the other platforms.

This is how Kotlin standard lib did it for IllegalArgumentException and IllegalStateException

[mkrussel]

You might need to also declare the parent exceptions.

[bsimmons]

Interesting. I'm not exactly sure how to setup the expect/actual. Something like this?

expect class VpnException: Exception
actual class VpnException: javax.net.ssl.SSLPeerUnverifiedException()

[bsimmons]

The compiler doesn't seem to like that.

[mkrussel]

public expect class IOException(message: String, cause: Throwable? = null) : Exception

public actual typealias IOException = IOException

[mkrussel]

That's what I did for IOException, make sure the actual part imports IOException to make it work correclty

[bsimmons]

Hmmm, ok.