func (r *resolver) handleSRVQuery(svc string, query *dns.Msg) (*dns.Msg, error) {
srv, ip := r.backend.ResolveService(svc)
if len(srv) == 0 {
return nil, nil
}
if len(srv) != len(ip) {
return nil, fmt.Errorf("invalid reply for SRV query %s", svc)
}
resp := createRespMsg(query)
for i, r := range srv {
rr := new(dns.SRV)
rr.Hdr = dns.RR_Header{Name: svc, Rrtype: dns.TypePTR, Class: dns.ClassINET, Ttl: respTTL}
rr.Port = r.Port
rr.Target = r.Target
resp.Answer = append(resp.Answer, rr)
rr1 := new(dns.A)
rr1.Hdr = dns.RR_Header{Name: r.Target, Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: respTTL}
rr1.A = ip[i]
resp.Extra = append(resp.Extra, rr1)
}
return resp, nil
}
func parseValue(t uint16, value string, h dns.RR_Header) dns.RR {
switch t {
case dns.TypeA:
a := new(dns.A)
a.Hdr = h
a.A, _ = parseA(value)
return a
case dns.TypeAAAA:
aaaa := new(dns.AAAA)
aaaa.Hdr = h
aaaa.AAAA, _ = parseAAAA(value)
return aaaa
case dns.TypeSRV:
srv := new(dns.SRV)
srv.Hdr = h
srv.Priority, srv.Weight, srv.Port, srv.Target, _ = parseSRV(value)
return srv
}
return nil
}