class DRb::DRbMessage

def dump(obj, error=false)  # :nodoc:
  case obj
  when DRbUndumped
    obj = make_proxy(obj, error)
  when Object
    # nothing
  else
    obj = make_proxy(obj, error)
  end
  begin
    str = Marshal::dump(obj)
  rescue
    str = Marshal::dump(make_proxy(obj, error))
  end
  [str.size].pack('N') + str
end