add this example too

_examples/key2ds/Makefile

@@ -0,0 +1,8 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+include $(GOROOT)/src/Make.inc
+TARG=key2ds
+GOFILES=key2ds.go
+DEPS=../../
+include $(GOROOT)/src/Make.cmd

_examples/key2ds/key2ds.go

@@ -0,0 +1,43 @@
+package main
+
+// Print the MX records of a domain
+// (c) Miek Gieben - 2011
+import (
+	"dns"
+        "os"
+        "fmt"
+)
+
+func main() {
+	r := new(dns.Resolver)
+        r.FromFile("/etc/resolv.conf")
+        if len(os.Args) != 2 {
+                fmt.Printf("%s DOMAIN\n", os.Args[0])
+                os.Exit(1)
+        }
+        m := new(dns.Msg)
+        m.MsgHdr.RecursionDesired = true //only set this bit
+        m.Question = make([]dns.Question, 1)
+        m.Question[0] = dns.Question{os.Args[1], dns.TypeDNSKEY, dns.ClassINET}
+
+        in, err := r.Query(m)
+        if in != nil {
+                if in.Rcode != dns.RcodeSuccess {
+                        fmt.Printf(" *** invalid answer name %s after DNSKEY query for %s\n", os.Args[1], os.Args[1])
+                        os.Exit(1)
+                }
+                // Stuff must be in the answer section
+                for _, k := range in.Answer {
+                        // Foreach key would need to provide a DS records, both sha1 and sha256
+                        if key, ok := k.(*dns.RR_DNSKEY); ok {
+                                fmt.Printf("%v\n", key)
+                                ds := key.ToDS(dns.HashSHA1)
+                                fmt.Printf("\t%v\n", ds)
+                                ds = key.ToDS(dns.HashSHA256)
+                                fmt.Printf("\t%v\n", ds)
+                        }
+                }
+        } else {
+                fmt.Printf("*** error: %s\n", err.String())
+        }
+}

_examples/reflect/reflect.go

@@ -36,7 +36,7 @@ func reply(c *dns.Conn, in *dns.Msg) []byte {
         // Copy the question.
 	m.Question[0] = in.Question[0]
 
-        // Some foo to check if we are called trough ip6 or ip4.
+        // Some foo to check if we are called through ip6 or ip4.
         // We add the correct reply RR.
         var ad net.IP
         if c.UDP != nil {

dnssec.go

@@ -32,7 +32,8 @@ const (
 
 // DNSSEC hashing codes.
 const (
-	HashSHA1 = iota
+        _ = iota
+	HashSHA1
 	HashSHA256
 	HashGOST94
 )
@@ -104,6 +105,7 @@ func (k *RR_DNSKEY) ToDS(h int) *RR_DS {
 	ds := new(RR_DS)
 	ds.Hdr.Name = k.Hdr.Name
 	ds.Hdr.Class = k.Hdr.Class
+        ds.Hdr.Rrtype = TypeDS
 	ds.Hdr.Ttl = k.Hdr.Ttl
 	ds.Algorithm = k.Algorithm
 	ds.DigestType = uint8(h)