It almost always programmer error to use defaults mode for NSURLConnection, especially on Mac where they are more runloop modes used by the platform that are no

It almost always programmer error to use defaults mode for NSURLConnection, especially on Mac where they are more runloop modes used by the platform that are not inclusive of defaults mode, unless the user has a very specific reason. File IO is usually ok in defaults mode because it makes code easier and you don't have to worry about timeouts. We make Objective-C run on Android at Apportable :-) The entire stack. Everything from clang, GCD, CoreFoundation, Foundation, UIKit, and dozens of comm frameworks. It's fairly popular with game developers. We recently re-developed all of Foundation from scratch on top of the parts of CFLite that Apple open sources and no longer use GNUStep. http://docs.apportable.com/release-notes.html#1100 http://docs.apportable.com/release-notes.html#1100 We have even open sourced all our tests around Foundation as well and this is one of them. Check it out: https://github.com/apportable/FoundationTests https://github.com/apportable/FoundationTests