class DRb::ExtServ

def alive?
  @server ? @server.alive? : false
end

def front
  DRbObject.new(nil, @server.uri)
end

def initialize(there, name, server=nil)
  super()
  @server = server || DRb::primary_server
  @name = name
  ro = DRbObject.new(nil, there)
  synchronize do
    @invoker = ro.register(name, DRbObject.new(self, @server.uri))
  end
end

def stop_service
  synchronize do
    @invoker.unregister(@name)
    server = @server
    @server = nil
    server.stop_service
    true
  end
end