Sending DNS notify messages (update notifications) using Ruby

… is actually easy thanks to Dnsruby. The following code illustrates that:

require "dnsruby"

def notify( zone, server )
  resolver = Dnsruby::Resolver.new( :nameserver => server )
  msg = Dnsruby::Message.new
  msg.header.rd = 1
  msg.header.aa = 1
  msg.header.opcode = Dnsruby::OpCode.Notify;
  msg.add_question( zone, Dnsruby::Types.SOA )
  begin
    resolver.send_message( msg )
  rescue ResolvError
    … # handle exception appropriately
  rescue ResolvTimeout
    … # handle exception appropriately
  end
end