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.
83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
// Copyright (c) 2013-2015 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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// 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 + 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 ShaHash // 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 *ShaHash) *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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