package wire

import (
	"io"
)

// MsgGetAddr implements the Message interface and represents a bitcoin getaddr message. It is used to request a list of
// known active peers on the network from a peer to help identify potential nodes. The list is returned via one or more
// addr messages (MsgAddr). This message has no payload.
type MsgGetAddr struct{}

// BtcDecode decodes r using the bitcoin protocol encoding into the receiver. This is part of the Message interface
// implementation.
func (msg *MsgGetAddr) BtcDecode(r io.Reader, pver uint32, enc MessageEncoding) (e error) {
	return nil
}

// BtcEncode encodes the receiver to w using the bitcoin protocol encoding. This is part of the Message interface
// implementation.
func (msg *MsgGetAddr) BtcEncode(w io.Writer, pver uint32, enc MessageEncoding) (e error) {
	return nil
}

// Command returns the protocol command string for the message.  This is part of the Message interface implementation.
func (msg *MsgGetAddr) Command() string {
	return CmdGetAddr
}

// MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message
// interface implementation.
func (msg *MsgGetAddr) MaxPayloadLength(pver uint32) uint32 {
	return 0
}

// NewMsgGetAddr returns a new bitcoin getaddr message that conforms to the Message interface. See MsgGetAddr for
// details.
func NewMsgGetAddr() *MsgGetAddr {
	return &MsgGetAddr{}
}