Are they possible?
According to this it is possible starting from Mac osx 10.9. Ctrl + F for "New support for Abstract namespace sockets" on that page. But I was not able to find one single example for Mac.
Also in Linux the sockets created in the abstract name space you can see them in /proc/net/unix (cat -v /proc/net/unix). The mac does not have /proc/...
Where can I expect to find them? Does it have something similar to Linux?