4deb922c9d
Although it is possible to get the command name for each msg type by creating an instances of the type and calling the Command method against it, it's slightly more efficient to simply allows callers to have direct access to the exported constants. This is currently really useful for the reject message since callers need to be able to examine the command type to determine whether or not the hash field needs to be included.
61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
// Copyright (c) 2013-2014 Conformal Systems LLC.
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package btcwire
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import (
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"fmt"
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"io"
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)
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// MsgMemPool implements the Message interface and represents a bitcoin mempool
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// message. It is used to request a list of transactions still in the active
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// memory pool of a relay.
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//
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// This message has no payload and was not added until protocol versions
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// starting with BIP0035Version.
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type MsgMemPool struct{}
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// BtcDecode decodes r using the bitcoin protocol encoding into the receiver.
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// This is part of the Message interface implementation.
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func (msg *MsgMemPool) BtcDecode(r io.Reader, pver uint32) error {
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if pver < BIP0035Version {
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str := fmt.Sprintf("mempool message invalid for protocol "+
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"version %d", pver)
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return messageError("MsgMemPool.BtcDecode", str)
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}
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return nil
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}
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// BtcEncode encodes the receiver to w using the bitcoin protocol encoding.
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// This is part of the Message interface implementation.
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func (msg *MsgMemPool) BtcEncode(w io.Writer, pver uint32) error {
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if pver < BIP0035Version {
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str := fmt.Sprintf("mempool message invalid for protocol "+
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"version %d", pver)
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return messageError("MsgMemPool.BtcEncode", str)
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}
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return nil
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}
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// Command returns the protocol command string for the message. This is part
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// of the Message interface implementation.
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func (msg *MsgMemPool) Command() string {
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return CmdMemPool
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}
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// MaxPayloadLength returns the maximum length the payload can be for the
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// receiver. This is part of the Message interface implementation.
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func (msg *MsgMemPool) MaxPayloadLength(pver uint32) uint32 {
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return 0
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}
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// NewMsgMemPool returns a new bitcoin pong message that conforms to the Message
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// interface. See MsgPong for details.
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func NewMsgMemPool() *MsgMemPool {
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return &MsgMemPool{}
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}
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