// parsePacket is used to parse an incoming packet
func (s *Server) parsePacket(packet []byte, from net.Addr) error {
var msg dns.Msg
if err := msg.Unpack(packet); err != nil {
log.Printf("[ERR] mdns: Failed to unpack packet: %v", err)
return err
}
return s.handleQuery(&msg, from)
}
// recv is used to receive until we get a shutdown
func (c *client) recv(l *net.UDPConn, msgCh chan *dns.Msg) {
if l == nil {
return
}
buf := make([]byte, 65536)
for !c.closed {
n, err := l.Read(buf)
if err != nil {
log.Printf("[ERR] mdns: Failed to read packet: %v", err)
continue
}
msg := new(dns.Msg)
if err := msg.Unpack(buf[:n]); err != nil {
log.Printf("[ERR] mdns: Failed to unpack packet: %v", err)
continue
}
select {
case msgCh <- msg:
case <-c.closedCh:
return
}
}
}