pkg: hide it by moving to _pkg.dev

The idea here is to preserve the history of `dev` branch development and its
code when merging with the `master`. Later this code could be moved into the
masters code where appropriate.

_pkg.dev/wire/payload/net_addr.go

@@ -0,0 +1,59 @@
+package payload
+
+import (
+	"net"
+	"strconv"
+	"time"
+
+	"github.com/CityOfZion/neo-go/pkg/wire/protocol"
+	"github.com/CityOfZion/neo-go/pkg/wire/util"
+)
+
+//NetAddr is an abstraction for the IP layer
+type NetAddr struct {
+	Timestamp uint32
+	IP        [16]byte
+	Port      uint16
+	Service   protocol.ServiceFlag
+}
+
+//NewNetAddr returns a NetAddr object
+func NewNetAddr(time uint32, ip [16]byte, port uint16, service protocol.ServiceFlag) (*NetAddr, error) {
+	return &NetAddr{time, ip, port, service}, nil
+}
+
+//NewAddrFromVersionMessage returns a NetAddr object from a version message
+func NewAddrFromVersionMessage(version VersionMessage) (*NetAddr, error) {
+
+	var ip [16]byte
+
+	copy(ip[:], []byte(version.IP)[:16])
+
+	return NewNetAddr(version.Timestamp, ip, version.Port, version.Services)
+}
+
+// EncodePayload Implements messager interface
+func (n *NetAddr) EncodePayload(bw *util.BinWriter) {
+
+	bw.Write(uint32(time.Now().Unix()))
+	bw.Write(protocol.NodePeerService)
+	bw.WriteBigEnd(n.IP)
+	bw.WriteBigEnd(n.Port)
+}
+
+// DecodePayload Implements Messager interface
+func (n *NetAddr) DecodePayload(br *util.BinReader) {
+
+	br.Read(&n.Timestamp)
+	br.Read(&n.Service)
+	br.ReadBigEnd(&n.IP)
+	br.ReadBigEnd(&n.Port)
+}
+
+//IPPort returns the IPPort from the NetAddr
+func (n *NetAddr) IPPort() string {
+	ip := net.IP(n.IP[:]).String()
+	port := strconv.Itoa(int(n.Port))
+	ipport := ip + ":" + port
+	return ipport
+}