Add even more rcodes

dns.go

@@ -29,11 +29,12 @@ import (
 
 const Year68 = 2 << (32 - 1)
 
+//&DNSError{Error: "name too long", Name: name}
+
 type DNSError struct {
 	Error     string
 	Name      string
 	Server    string
-	IsTimeout bool
 }
 
 func (e *DNSError) String() string {

msg.go

@@ -120,6 +120,11 @@ var rcode_str = map[int]string{
 	RcodeNameError:      "NXDOMAIN",
 	RcodeNotImplemented: "NOTIMPL",
 	RcodeRefused:        "REFUSED",
+	RcodeYXDomain:       "YXDOMAIN", // From RFC 2136
+	RcodeYXRrset:        "YXRRSET",
+	RcodeNXRrset:        "NXRRSET",
+	RcodeNotAuth:        "NOTAUTH",
+	RcodeNotZone:        "NOTZONE",
 }
 
 // Pack a domain name s into msg[off:].

types.go

@@ -82,6 +82,11 @@ const (
 	RcodeNameError      = 3
 	RcodeNotImplemented = 4
 	RcodeRefused        = 5
+        RcodeYXDomain       = 6
+        RcodeYXRrset        = 7
+        RcodeNXRrset        = 8
+        RcodeNotAuth        = 9
+        RcodeNotZone        = 10
 	// Tsig errors
 	TsigBadSig  = 16
 	TsigBadKey  = 17