bd4e64d1d4
This is mostly a backport of some of the same modifications made in Decred along with a few additional things cleaned up. In particular, this updates the code to make use of the new chainhash package. Also, since this required API changes anyways and the hash algorithm is no longer tied specifically to SHA, all other functions throughout the code base which had "Sha" in their name have been changed to Hash so they are not incorrectly implying the hash algorithm. The following is an overview of the changes: - Remove the wire.ShaHash type - Update all references to wire.ShaHash to the new chainhash.Hash type - Rename the following functions and update all references: - wire.BlockHeader.BlockSha -> BlockHash - wire.MsgBlock.BlockSha -> BlockHash - wire.MsgBlock.TxShas -> TxHashes - wire.MsgTx.TxSha -> TxHash - blockchain.ShaHashToBig -> HashToBig - peer.ShaFunc -> peer.HashFunc - Rename all variables that included sha in their name to include hash instead - Update for function name changes in other dependent packages such as btcutil - Update copyright dates on all modified files - Update glide.lock file to use the required version of btcutil
84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
// Copyright (c) 2013-2016 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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"github.com/btcsuite/btcd/chaincfg/chainhash"
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)
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const (
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// MaxInvPerMsg is the maximum number of inventory vectors that can be in a
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// single bitcoin inv message.
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MaxInvPerMsg = 50000
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// Maximum payload size for an inventory vector.
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maxInvVectPayload = 4 + chainhash.HashSize
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)
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// InvType represents the allowed types of inventory vectors. See InvVect.
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type InvType uint32
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// These constants define the various supported inventory vector types.
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const (
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InvTypeError InvType = 0
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InvTypeTx InvType = 1
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InvTypeBlock InvType = 2
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InvTypeFilteredBlock InvType = 3
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)
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// Map of service flags back to their constant names for pretty printing.
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var ivStrings = map[InvType]string{
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InvTypeError: "ERROR",
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InvTypeTx: "MSG_TX",
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InvTypeBlock: "MSG_BLOCK",
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InvTypeFilteredBlock: "MSG_FILTERED_BLOCK",
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}
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// String returns the InvType in human-readable form.
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func (invtype InvType) String() string {
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if s, ok := ivStrings[invtype]; ok {
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return s
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}
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return fmt.Sprintf("Unknown InvType (%d)", uint32(invtype))
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}
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// InvVect defines a bitcoin inventory vector which is used to describe data,
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// as specified by the Type field, that a peer wants, has, or does not have to
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// another peer.
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type InvVect struct {
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Type InvType // Type of data
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Hash chainhash.Hash // Hash of the data
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}
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// NewInvVect returns a new InvVect using the provided type and hash.
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func NewInvVect(typ InvType, hash *chainhash.Hash) *InvVect {
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return &InvVect{
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Type: typ,
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Hash: *hash,
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}
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}
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// readInvVect reads an encoded InvVect from r depending on the protocol
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// version.
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func readInvVect(r io.Reader, pver uint32, iv *InvVect) error {
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err := readElements(r, &iv.Type, &iv.Hash)
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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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// writeInvVect serializes an InvVect to w depending on the protocol version.
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func writeInvVect(w io.Writer, pver uint32, iv *InvVect) error {
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err := writeElements(w, iv.Type, &iv.Hash)
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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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