func TestPrivateByteSlice(t *testing.T) {
dns.PrivateHandle("ISBN", TypeISBN, NewISBN)
defer dns.PrivateHandleRemove(TypeISBN)
rr, err := dns.NewRR(testrecord)
if err != nil {
t.Fatal(err)
}
buf := make([]byte, 100)
off, err := dns.PackRR(rr, buf, 0, nil, false)
if err != nil {
t.Errorf("got error packing ISBN: %v", err)
}
custrr := rr.(*dns.PrivateRR)
if ln := custrr.Data.Len() + len(custrr.Header().Name) + 11; ln != off {
t.Errorf("offset is not matching to length of Private RR: %d!=%d", off, ln)
}
rr1, off1, err := dns.UnpackRR(buf[:off], 0)
if err != nil {
t.Errorf("got error unpacking ISBN: %v", err)
}
if off1 != off {
t.Errorf("Offset after unpacking differs: %d != %d", off1, off)
}
if rr1.String() != testrecord {
t.Errorf("Record string representation did not match original %#v != %#v", rr1.String(), testrecord)
} else {
t.Log(rr1.String())
}
}
// Key serializes the RRset and return a signature cache key.
func key(rrs []dns.RR) string {
h := fnv.New64()
buf := make([]byte, 256)
for _, r := range rrs {
off, err := dns.PackRR(r, buf, 0, nil, false)
if err == nil {
h.Write(buf[:off])
}
}
i := h.Sum64()
return strconv.FormatUint(i, 10)
}
func marshalCanonicalCAASet(set []*dns.CAA) ([]byte, error) {
var err error
offset, size := 0, 0
sortedSet := caaSet(set)
sort.Sort(sortedSet)
for _, rr := range sortedSet {
size += dns.Len(rr)
}
tbh := make([]byte, size)
for _, rr := range sortedSet {
ttl := rr.Hdr.Ttl
rr.Hdr.Ttl = 0 // only variable that should jitter
offset, err = dns.PackRR(rr, tbh, offset, nil, false)
if err != nil {
return nil, err
}
rr.Hdr.Ttl = ttl
}
return tbh, nil
}