Network.framework isn’t just easier to use, it performs better and is generally safer too. What this means is that while BSD sockets will continue to work for

Network.framework isn’t just easier to use, it performs better and is generally safer too. What this means is that while BSD sockets will continue to work for the foreseeable future, native cocoa apps and cross platform apps with specialized ports will have a leg up in performance, stability, and safety over dumb ports using BSD sockets. In other words, you’re free to keep using BSD sockets at your own detriment.