6a351fa2c3
This updates the wire error type by clearly defining package errors and updating call sites.
69 lines
2.1 KiB
Go
69 lines
2.1 KiB
Go
// Copyright (c) 2016 The btcsuite developers
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// Copyright (c) 2017-2020 The Decred 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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// MsgFeeFilter implements the Message interface and represents a feefilter
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// message. It is used to request the receiving peer does not announce any
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// transactions below the specified minimum fee rate.
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//
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// This message was not added until protocol versions starting with
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// FeeFilterVersion.
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type MsgFeeFilter struct {
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MinFee int64
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}
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// BtcDecode decodes r using the protocol encoding into the receiver.
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// This is part of the Message interface implementation.
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func (msg *MsgFeeFilter) BtcDecode(r io.Reader, pver uint32) error {
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const op = "MsgFeeFilter.BtcDecode"
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if pver < FeeFilterVersion {
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msg := fmt.Sprintf("feefilter message invalid for protocol "+
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"version %d", pver)
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return messageError(op, ErrMsgInvalidForPVer, msg)
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}
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return readElement(r, &msg.MinFee)
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}
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// BtcEncode encodes the receiver to w using the protocol encoding.
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// This is part of the Message interface implementation.
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func (msg *MsgFeeFilter) BtcEncode(w io.Writer, pver uint32) error {
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const op = "MsgFeeFilter.BtcEncode"
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if pver < FeeFilterVersion {
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msg := fmt.Sprintf("feefilter message invalid for protocol "+
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"version %d", pver)
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return messageError(op, ErrMsgInvalidForPVer, msg)
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}
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return writeElement(w, msg.MinFee)
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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 *MsgFeeFilter) Command() string {
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return CmdFeeFilter
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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 *MsgFeeFilter) MaxPayloadLength(pver uint32) uint32 {
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// 8 bytes min fee.
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return 8
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}
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// NewMsgFeeFilter returns a new feefilter message that conforms to the Message
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// interface. See MsgFeeFilter for details.
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func NewMsgFeeFilter(minfee int64) *MsgFeeFilter {
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return &MsgFeeFilter{
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MinFee: minfee,
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}
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}
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