socket name of unix domain sockets

[timkuijsten]

It is currently impossible to get the path of a connected unix domain socket. socket.address() returns an empty object if it's not connected over AFINET.

I've looked at lib/net.js, src/tcp_wrap.cc, src/pipe_wrap.cc and libuv and it looks like libuv has support for returning the name of the socket and it is only pipe_wrap.cc that misses something like GetPeerName (I'm not a C coder so I might be wrong on this).

[brendanashworth]

Closing in favor of discussion at nodejs/node#954.