59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright (c) 2017 The btcsuite developers
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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 wire
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import (
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"io"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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)
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type MsgGetCFilter struct {
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ProtocolVersion uint32
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BlockHash chainhash.Hash
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Extended bool
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}
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func (msg *MsgGetCFilter) BtcDecode(r io.Reader, pver uint32) error {
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err := readElement(r, &msg.BlockHash)
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if err != nil {
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return err
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}
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return readElement(r, &msg.Extended)
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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 *MsgGetCFilter) BtcEncode(w io.Writer, pver uint32) error {
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err := writeElement(w, &msg.BlockHash)
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if err != nil {
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return err
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}
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return writeElement(w, &msg.Extended)
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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 *MsgGetCFilter) Command() string {
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return CmdGetCFilter
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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 *MsgGetCFilter) MaxPayloadLength(pver uint32) uint32 {
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// Protocol version 4 bytes + block hash + Extended flag.
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return 4 + chainhash.HashSize + 1
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}
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// NewMsgGetCFilter returns a new bitcoin getcfilter message that conforms to
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// the Message interface using the passed parameters and defaults for the
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// remaining fields.
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func NewMsgGetCFilter(blockHash *chainhash.Hash, extended bool) *MsgGetCFilter {
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return &MsgGetCFilter{
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ProtocolVersion: ProtocolVersion,
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BlockHash: *blockHash,
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Extended: extended,
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}
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}
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