Example #1
0
// Pack the dns.Msg and write to available connections (multicast)
func (c *client) sendQuery(msg *dns.Msg) error {
	buf, err := msg.Pack()
	if err != nil {
		return err
	}
	if c.ipv4conn != nil {
		c.ipv4conn.WriteTo(buf, ipv4Addr)
	}
	if c.ipv4conn != nil {
		c.ipv4conn.WriteTo(buf, ipv6Addr)
	}
	return nil
}
Example #2
0
// multicastResponse us used to send a multicast response packet
func (c *server) multicastResponse(msg *dns.Msg) error {
	buf, err := msg.Pack()
	if err != nil {
		log.Println("Failed to pack message!")
		return err
	}
	if c.ipv4conn != nil {
		c.ipv4conn.WriteTo(buf, ipv4Addr)
	}
	if c.ipv6conn != nil {
		c.ipv6conn.WriteTo(buf, ipv6Addr)
	}
	return nil
}
Example #3
0
// sendResponse is used to send a unicast response packet
func (s *server) sendResponse(resp *dns.Msg, from net.Addr) error {
	buf, err := resp.Pack()
	if err != nil {
		return err
	}
	addr := from.(*net.UDPAddr)
	if addr.IP.To4() != nil {
		_, err = s.ipv4conn.WriteToUDP(buf, addr)
		return err
	} else {
		_, err = s.ipv6conn.WriteToUDP(buf, addr)
		return err
	}
}