class @beta Efl.Net.Socket_Fd extends Efl.Loop_Fd 
                              implements Efl.Io.Reader_Fd, Efl.Io.Writer_Fd, Efl.Io.Closer_Fd, Efl.Net.Socket {
    [[A base implementation for sockets over file descriptors (fd)

      This is the common class and takes an existing FD, usually
      created by an dialler or server.

      @Efl.Io.Closer.close_on_exec and
      @Efl.Io.Closer.close_on_invalidate are respected and default to
      $true.
    ]]

    methods {
        @property family {
            [[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.
            ]]
            get { }
            set @protected { }
            values {
                family: int; [[Address family]]
            }
        }
    }

    implements {
        Efl.Object.finalize;
        Efl.Object.constructor;
        Efl.Object.invalidate;
        Efl.Object.destructor;
        Efl.Loop_Fd.fd { set; }
        Efl.Io.Closer.close;
        Efl.Io.Closer.closed { get; }
        Efl.Io.Reader.read;
        Efl.Io.Reader.can_read { set; }
        Efl.Io.Reader.eos { set; }
        Efl.Io.Writer.write;
        Efl.Io.Writer.can_write { set; }
        Efl.Net.Socket.address_local { get; set; }
        Efl.Net.Socket.address_remote { get; set; }
    }
}