more Copy() functions

dns.go

@@ -105,6 +105,8 @@ type RR interface {
 	String() string
 	// Len returns the length (in octects) of the uncompressed RR in wire format.
 	Len() int
+// Copy returns a copy of the RR
+// Copy() RR
 }
 
 // Exchange is used in (asynchronous) communication with the resolver. If the 

edns.go

@@ -83,6 +83,10 @@ func (rr *RR_OPT) Len() int {
 	return l
 }
 
+func (rr *RR_OPT) Copy() *RR_OPT {
+	return &RR_OPT{*rr.Hdr.Copy(), rr.Option}
+}
+
 // Version returns the EDNS version used. Only zero is defined.
 func (rr *RR_OPT) Version() uint8 {
 	return uint8(rr.Hdr.Ttl & 0x00FF00FFFF)

tsig.go

@@ -110,6 +110,10 @@ func (rr *RR_TSIG) Len() int {
 		4 + len(rr.MAC)/2 + 1 + 6 + len(rr.OtherData)/2 + 1
 }
 
+func (rr *RR_TSIG) Copy() *RR_TSIG {
+		return &RR_TSIG{*rr.Hdr.Copy(), rr.Algorithm, rr.TimeSigned, rr.Fudge, rr.MACSize, rr.MAC, rr.OrigId, rr.Error, rr.OtherLen, rr.OtherData}
+}
+
 // The following values must be put in wireformat, so that the MAC can be calculated.
 // RFC 2845, section 3.4.2. TSIG Variables.
 type tsigWireFmt struct {

types.go

@@ -679,6 +679,10 @@ func (rr *RR_DNAME) Len() int {
 	return rr.Hdr.Len() + l
 }
 
+func (rr *RR_DNAME) Copy() *RR_DNAME {
+	return &RR_DNAME{*rr.Hdr.Copy(), rr.Target}
+}
+
 type RR_A struct {
 	Hdr RR_Header
 	A   net.IP `dns:"a"`
@@ -696,6 +700,10 @@ func (rr *RR_A) Len() int {
 	return rr.Hdr.Len() + net.IPv4len
 }
 
+func (rr *RR_A) Copy() *RR_A {
+	return &RR_A{*rr.Hdr.Copy(), rr.A}
+}
+
 type RR_AAAA struct {
 	Hdr  RR_Header
 	AAAA net.IP `dns:"aaaa"`
@@ -713,6 +721,10 @@ func (rr *RR_AAAA) Len() int {
 	return rr.Hdr.Len() + net.IPv6len
 }
 
+func (rr *RR_AAAA) Copy() *RR_AAAA {
+	return &RR_AAAA{*rr.Hdr.Copy(), rr.AAAA}
+}
+
 type RR_LOC struct {
 	Hdr       RR_Header
 	Version   uint8
@@ -778,7 +790,7 @@ func (rr *RR_LOC) Len() int {
 }
 
 func (rr *RR_LOC) Copy() *RR_LOC {
-	return &RR_LOC{*rr.Hdr.Copy(), rr.TypeCovered, rr.Algorithm, rr.Labels, rr.OrigTtl, rr.Expiration, rr.Inception, rr.KeyTag, rr.SignerName, rr.Signature}
+	return &RR_LOC{*rr.Hdr.Copy(), rr.Version, rr.Size, rr.HorizPre, rr.VertPre, rr.Latitude, rr.Longitude, rr.Altitude}
 }
 
 type RR_RRSIG struct {