@tr4npt and what is the usecase? Library cannot be used without INTERNET permission, it's basic requirements to use it, so why should library report that? I don't see a point in that.

The point is that any OTHER exception is silently ignored and not reported. This is a simple change to make the library more robust.

Case 1:
IOException occurs -> client program is notified about the error

Case 2:
Any other exception occurs -> client program is not notified

I don't know what other exceptions are possible, but I sure would like to know when they occur. At the very least, the callback interface should be notified that the request is done. In case #2, this does not occur.

I just tried this, removing INTERNET permission from app that uses the library (both JAR and AAR), will receive IOException: Unhandled exception: Permission denied (missing INTERNET permission?)

Have you tried this using latest HEAD or with 1.4.6 ? If it exists as bug in 1.4.6 it is already fixed.