[gtkmm] Gtk::IOChannel - how to use it?

[Igor Gorbounov <igorbounov voronezh serw ru>]

I'm trying to use Gtk::IOChannel created from a socket file descriptor.
when this channel closes, the socket turnes to be closed, too. I don't
want the socket being closed, so is there any way to avoid this?
And next, it appeared to be so that the only way to read to the end from the
channel on the other end (of this channel) is by closing the channel
on this end. Is it really so?
   Hopefully,
      Igor Gorbounov