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/maddr.go

@@ -0,0 +1,64 @@
+package payload
+
+import (
+	"io"
+
+	"github.com/CityOfZion/neo-go/pkg/wire/command"
+	"github.com/CityOfZion/neo-go/pkg/wire/util"
+)
+
+// AddrMessage represents an address message on the neo network
+type AddrMessage struct {
+	AddrList []*NetAddr
+}
+
+// NewAddrMessage instantiates a new AddrMessage
+func NewAddrMessage() (*AddrMessage, error) {
+	addrMess := &AddrMessage{
+		nil,
+	}
+	return addrMess, nil
+}
+
+// AddNetAddr will add a net address into the Address message
+func (a *AddrMessage) AddNetAddr(n *NetAddr) error {
+	a.AddrList = append(a.AddrList, n)
+	// TODO:check if max reached, if so return err. What is max?
+
+	return nil
+}
+
+// DecodePayload Implements Messager interface
+func (a *AddrMessage) DecodePayload(r io.Reader) error {
+
+	br := &util.BinReader{R: r}
+	listLen := br.VarUint()
+
+	a.AddrList = make([]*NetAddr, listLen)
+	for i := 0; i < int(listLen); i++ {
+		a.AddrList[i] = &NetAddr{}
+		a.AddrList[i].DecodePayload(br)
+		if br.Err != nil {
+			return br.Err
+		}
+	}
+	return br.Err
+}
+
+// EncodePayload Implements messager interface
+func (a *AddrMessage) EncodePayload(w io.Writer) error {
+	bw := &util.BinWriter{W: w}
+
+	listLen := uint64(len(a.AddrList))
+	bw.VarUint(listLen)
+
+	for _, addr := range a.AddrList {
+		addr.EncodePayload(bw)
+	}
+	return bw.Err
+}
+
+// Command Implements messager interface
+func (a *AddrMessage) Command() command.Type {
+	return command.Addr
+}