62 lines
1.8 KiB
Go
62 lines
1.8 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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"fmt"
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"io"
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)
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const (
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// MaxCFilterDataSize is the maximum byte size of a committed filter.
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MaxCFilterDataSize = 65536
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)
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type MsgCFilter struct {
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Data []byte
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}
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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 *MsgCFilter) BtcDecode(r io.Reader, pver uint32) error {
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var err error
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msg.Data, err = ReadVarBytes(r, pver, MaxCFilterDataSize,
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"cfilter data")
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return err
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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 *MsgCFilter) BtcEncode(w io.Writer, pver uint32) error {
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size := len(msg.Data)
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if size > MaxCFilterDataSize {
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str := fmt.Sprintf("cfilter size too large for message "+
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"[size %v, max %v]", size, MaxCFilterDataSize)
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return messageError("MsgCFilter.BtcEncode", str)
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}
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return WriteVarBytes(w, pver, msg.Data)
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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 *MsgCFilter) Command() string {
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return CmdCFilter
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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 *MsgCFilter) MaxPayloadLength(pver uint32) uint32 {
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return uint32(VarIntSerializeSize(MaxCFilterDataSize)) +
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MaxCFilterDataSize
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}
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// NewMsgFilterAdd returns a new bitcoin filteradd message that conforms to the
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// Message interface. See MsgCFilter for details.
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func NewMsgCFilter(data []byte) *MsgCFilter {
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return &MsgCFilter{
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Data: data,
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}
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}
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