2eef3720a9
This commit contains the entire btcwire repository along with several changes needed to move all of the files into the wire directory in order to prepare it for merging. This does NOT update btcd or any of the other packages to use the new location as that will be done separately. - All import paths in the old btcwire test files have been changed to the new location - All references to btcwire as the package name have been chagned to wire - The coveralls badge has been removed since it unfortunately doesn't support coverage of sub-packages This is ongoing work toward #214.
91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
// Copyright (c) 2014-2015 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 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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// MaxFilterAddDataSize is the maximum byte size of a data
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// element to add to the Bloom filter. It is equal to the
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// maximum element size of a script.
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MaxFilterAddDataSize = 520
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)
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// MsgFilterAdd implements the Message interface and represents a bitcoin
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// filteradd message. It is used to add a data element to an existing Bloom
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// filter.
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//
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// This message was not added until protocol version BIP0037Version.
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type MsgFilterAdd 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 *MsgFilterAdd) BtcDecode(r io.Reader, pver uint32) error {
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if pver < BIP0037Version {
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str := fmt.Sprintf("filteradd message invalid for protocol "+
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"version %d", pver)
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return messageError("MsgFilterAdd.BtcDecode", str)
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}
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var err error
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msg.Data, err = readVarBytes(r, pver, MaxFilterAddDataSize,
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"filteradd data")
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if err != nil {
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return err
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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 *MsgFilterAdd) BtcEncode(w io.Writer, pver uint32) error {
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if pver < BIP0037Version {
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str := fmt.Sprintf("filteradd message invalid for protocol "+
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"version %d", pver)
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return messageError("MsgFilterAdd.BtcEncode", str)
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}
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size := len(msg.Data)
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if size > MaxFilterAddDataSize {
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str := fmt.Sprintf("filteradd size too large for message "+
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"[size %v, max %v]", size, MaxFilterAddDataSize)
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return messageError("MsgFilterAdd.BtcEncode", str)
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}
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err := writeVarBytes(w, pver, msg.Data)
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if err != nil {
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return err
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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 *MsgFilterAdd) Command() string {
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return CmdFilterAdd
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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 *MsgFilterAdd) MaxPayloadLength(pver uint32) uint32 {
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return uint32(VarIntSerializeSize(MaxFilterAddDataSize)) +
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MaxFilterAddDataSize
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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 MsgFilterAdd for details.
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func NewMsgFilterAdd(data []byte) *MsgFilterAdd {
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return &MsgFilterAdd{
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Data: data,
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}
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}
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