Release v0.1.0

vendor/github.com/btcsuite/btcd/wire/msggetcfheaders.go

@@ -0,0 +1,77 @@
+// Copyright (c) 2017 The btcsuite developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package wire
+
+import (
+	"io"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+)
+
+// MsgGetCFHeaders is a message similar to MsgGetHeaders, but for committed
+// filter headers. It allows to set the FilterType field to get headers in the
+// chain of basic (0x00) or extended (0x01) headers.
+type MsgGetCFHeaders struct {
+	FilterType  FilterType
+	StartHeight uint32
+	StopHash    chainhash.Hash
+}
+
+// BtcDecode decodes r using the bitcoin protocol encoding into the receiver.
+// This is part of the Message interface implementation.
+func (msg *MsgGetCFHeaders) BtcDecode(r io.Reader, pver uint32, _ MessageEncoding) error {
+	err := readElement(r, &msg.FilterType)
+	if err != nil {
+		return err
+	}
+
+	err = readElement(r, &msg.StartHeight)
+	if err != nil {
+		return err
+	}
+
+	return readElement(r, &msg.StopHash)
+}
+
+// BtcEncode encodes the receiver to w using the bitcoin protocol encoding.
+// This is part of the Message interface implementation.
+func (msg *MsgGetCFHeaders) BtcEncode(w io.Writer, pver uint32, _ MessageEncoding) error {
+	err := writeElement(w, msg.FilterType)
+	if err != nil {
+		return err
+	}
+
+	err = writeElement(w, &msg.StartHeight)
+	if err != nil {
+		return err
+	}
+
+	return writeElement(w, &msg.StopHash)
+}
+
+// Command returns the protocol command string for the message.  This is part
+// of the Message interface implementation.
+func (msg *MsgGetCFHeaders) Command() string {
+	return CmdGetCFHeaders
+}
+
+// MaxPayloadLength returns the maximum length the payload can be for the
+// receiver.  This is part of the Message interface implementation.
+func (msg *MsgGetCFHeaders) MaxPayloadLength(pver uint32) uint32 {
+	// Filter type + uint32 + block hash
+	return 1 + 4 + chainhash.HashSize
+}
+
+// NewMsgGetCFHeaders returns a new bitcoin getcfheader message that conforms to
+// the Message interface using the passed parameters and defaults for the
+// remaining fields.
+func NewMsgGetCFHeaders(filterType FilterType, startHeight uint32,
+	stopHash *chainhash.Hash) *MsgGetCFHeaders {
+	return &MsgGetCFHeaders{
+		FilterType:  filterType,
+		StartHeight: startHeight,
+		StopHash:    *stopHash,
+	}
+}