Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / github.com / btcsuite / btcd / wire / msgheaders.go

diff --git a/vendor/github.com/btcsuite/btcd/wire/msgheaders.go b/vendor/github.com/btcsuite/btcd/wire/msgheaders.go
deleted file mode 100644 (file)
index 7d18d93..0000000
--- a/vendor/github.com/btcsuite/btcd/wire/msgheaders.go
+++ /dev/null
@@ -1,136 +0,0 @@
-// Copyright (c) 2013-2016 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 (
-       "fmt"
-       "io"
-)
-
-// MaxBlockHeadersPerMsg is the maximum number of block headers that can be in
-// a single bitcoin headers message.
-const MaxBlockHeadersPerMsg = 2000
-
-// MsgHeaders implements the Message interface and represents a bitcoin headers
-// message.  It is used to deliver block header information in response
-// to a getheaders message (MsgGetHeaders).  The maximum number of block headers
-// per message is currently 2000.  See MsgGetHeaders for details on requesting
-// the headers.
-type MsgHeaders struct {
-       Headers []*BlockHeader
-}
-
-// AddBlockHeader adds a new block header to the message.
-func (msg *MsgHeaders) AddBlockHeader(bh *BlockHeader) error {
-       if len(msg.Headers)+1 > MaxBlockHeadersPerMsg {
-               str := fmt.Sprintf("too many block headers in message [max %v]",
-                       MaxBlockHeadersPerMsg)
-               return messageError("MsgHeaders.AddBlockHeader", str)
-       }
-
-       msg.Headers = append(msg.Headers, bh)
-       return nil
-}
-
-// BtcDecode decodes r using the bitcoin protocol encoding into the receiver.
-// This is part of the Message interface implementation.
-func (msg *MsgHeaders) BtcDecode(r io.Reader, pver uint32, enc MessageEncoding) error {
-       count, err := ReadVarInt(r, pver)
-       if err != nil {
-               return err
-       }
-
-       // Limit to max block headers per message.
-       if count > MaxBlockHeadersPerMsg {
-               str := fmt.Sprintf("too many block headers for message "+
-                       "[count %v, max %v]", count, MaxBlockHeadersPerMsg)
-               return messageError("MsgHeaders.BtcDecode", str)
-       }
-
-       // Create a contiguous slice of headers to deserialize into in order to
-       // reduce the number of allocations.
-       headers := make([]BlockHeader, count)
-       msg.Headers = make([]*BlockHeader, 0, count)
-       for i := uint64(0); i < count; i++ {
-               bh := &headers[i]
-               err := readBlockHeader(r, pver, bh)
-               if err != nil {
-                       return err
-               }
-
-               txCount, err := ReadVarInt(r, pver)
-               if err != nil {
-                       return err
-               }
-
-               // Ensure the transaction count is zero for headers.
-               if txCount > 0 {
-                       str := fmt.Sprintf("block headers may not contain "+
-                               "transactions [count %v]", txCount)
-                       return messageError("MsgHeaders.BtcDecode", str)
-               }
-               msg.AddBlockHeader(bh)
-       }
-
-       return nil
-}
-
-// BtcEncode encodes the receiver to w using the bitcoin protocol encoding.
-// This is part of the Message interface implementation.
-func (msg *MsgHeaders) BtcEncode(w io.Writer, pver uint32, enc MessageEncoding) error {
-       // Limit to max block headers per message.
-       count := len(msg.Headers)
-       if count > MaxBlockHeadersPerMsg {
-               str := fmt.Sprintf("too many block headers for message "+
-                       "[count %v, max %v]", count, MaxBlockHeadersPerMsg)
-               return messageError("MsgHeaders.BtcEncode", str)
-       }
-
-       err := WriteVarInt(w, pver, uint64(count))
-       if err != nil {
-               return err
-       }
-
-       for _, bh := range msg.Headers {
-               err := writeBlockHeader(w, pver, bh)
-               if err != nil {
-                       return err
-               }
-
-               // The wire protocol encoding always includes a 0 for the number
-               // of transactions on header messages.  This is really just an
-               // artifact of the way the original implementation serializes
-               // block headers, but it is required.
-               err = WriteVarInt(w, pver, 0)
-               if err != nil {
-                       return err
-               }
-       }
-
-       return nil
-}
-
-// Command returns the protocol command string for the message.  This is part
-// of the Message interface implementation.
-func (msg *MsgHeaders) Command() string {
-       return CmdHeaders
-}
-
-// MaxPayloadLength returns the maximum length the payload can be for the
-// receiver.  This is part of the Message interface implementation.
-func (msg *MsgHeaders) MaxPayloadLength(pver uint32) uint32 {
-       // Num headers (varInt) + max allowed headers (header length + 1 byte
-       // for the number of transactions which is always 0).
-       return MaxVarIntPayload + ((MaxBlockHeaderPayload + 1) *
-               MaxBlockHeadersPerMsg)
-}
-
-// NewMsgHeaders returns a new bitcoin headers message that conforms to the
-// Message interface.  See MsgHeaders for details.
-func NewMsgHeaders() *MsgHeaders {
-       return &MsgHeaders{
-               Headers: make([]*BlockHeader, 0, MaxBlockHeadersPerMsg),
-       }
-}