btcd/msgmempool.go
2013-05-08 18:58:29 -05:00

59 lines
1.7 KiB
Go

// Copyright (c) 2013 Conformal Systems LLC.
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package btcwire
import (
"fmt"
"io"
)
// MsgMemPool implements the Message interface and represents a bitcoin mempool
// message. It is used to request a list of transactions still in the active
// memory pool of a relay.
//
// This message has no payload and was not added until protocol versions
// starting with BIP0035Version.
type MsgMemPool struct{}
// BtcDecode decodes r using the bitcoin protocol encoding into the receiver.
// This is part of the Message interface implementation.
func (msg *MsgMemPool) BtcDecode(r io.Reader, pver uint32) error {
if pver < BIP0035Version {
err := fmt.Errorf("mempool message invalid for protocol version: %d", pver)
return err
}
return nil
}
// BtcEncode encodes the receiver to w using the bitcoin protocol encoding.
// This is part of the Message interface implementation.
func (msg *MsgMemPool) BtcEncode(w io.Writer, pver uint32) error {
if pver < BIP0035Version {
err := fmt.Errorf("mempool message invalid for protocol version: %d", pver)
return err
}
return nil
}
// Command returns the protocol command string for the message. This is part
// of the Message interface implementation.
func (msg *MsgMemPool) Command() string {
return cmdMemPool
}
// MaxPayloadLength returns the maximum length the payload can be for the
// receiver. This is part of the Message interface implementation.
func (msg *MsgMemPool) MaxPayloadLength(pver uint32) uint32 {
return 0
}
// NewMsgPong returns a new bitcoin pong message that conforms to the Message
// interface. See MsgPong for details.
func NewMsgMemPool() *MsgMemPool {
return &MsgMemPool{}
}