Apple recommends against direct use of Mach

[mwcampbell]

While trying to understand the security implications of using Mach message ports, I found the following in this Apple documentation page:

Note: Apple does not support Mach functions for use by external developers and does not guarantee the binary compatibility from one operating system release to the next of code that calls Mach directly. Therefore, Apple recommends against the use of Mach functions by applications. You should use higher-level APIs whenever possible, and call BSD when a low-level interface is required.

So I wonder if it would be better to use Unix domain sockets instead.