The address family (AF_*) family of this socket.
It will be one of AF_INET (IPv4), AF_INET6 (IPv6), AF_UNIX...
It must be set before the Efl.Loop_Fd.fd.set is called with a valid file descriptor.
@property family { get {} set @protected {} values { family: int; } }
int efl_net_server_fd_family_get(const Eo *obj); void efl_net_server_fd_family_set(Eo *obj, int family);