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Respond to multicast address for multicast queries #91

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9 changes: 7 additions & 2 deletions server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -269,19 +269,24 @@ func (s *Server) handleQuestion(q dns.Question) (multicastRecs, unicastRecs []dn

// sendResponse is used to send a response packet
func (s *Server) sendResponse(resp *dns.Msg, from net.Addr, unicast bool) error {
// TODO(reddaly): Respect the unicast argument, and allow sending responses
// over multicast.
buf, err := resp.Pack()
if err != nil {
return err
}

// Determine the socket to send from
addr := from.(*net.UDPAddr)

if addr.IP.To4() != nil {
if !unicast {
addr.IP = net.ParseIP(ipv4mdns)
}
_, err = s.ipv4List.WriteToUDP(buf, addr)
return err
} else {
if !unicast {
addr.IP = net.ParseIP(ipv6mdns)
}
_, err = s.ipv6List.WriteToUDP(buf, addr)
return err
}
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