6db6646fcb
This contains the following upstream commits: -ca4e9b82d6-9935fe5dba-d009185a56The merge commit modifies the protocol versions and the wire default user agent version accordingly along with other minor changes in terms of copyright dates and comment changes.
127 lines
3.2 KiB
Go
127 lines
3.2 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
|
|
// Copyright (c) 2015-2017 The Decred developers
|
|
// Use of this source code is governed by an ISC
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package wire
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
const (
|
|
// InitialProcotolVersion is the initial protocol version for the
|
|
// network.
|
|
InitialProcotolVersion uint32 = 1
|
|
|
|
// ProtocolVersion is the latest protocol version this package supports.
|
|
ProtocolVersion uint32 = 5
|
|
|
|
// BIP0111Version is the protocol version which added the SFNodeBloom
|
|
// service flag.
|
|
BIP0111Version uint32 = 2
|
|
|
|
// SendHeadersVersion is the protocol version which added a new
|
|
// sendheaders message.
|
|
SendHeadersVersion uint32 = 3
|
|
|
|
// MaxBlockSizeVersion is the protocol version which increased the
|
|
// original blocksize.
|
|
MaxBlockSizeVersion uint32 = 4
|
|
|
|
// FeeFilterVersion is the protocol version which added a new
|
|
// feefilter message.
|
|
FeeFilterVersion uint32 = 5
|
|
)
|
|
|
|
// ServiceFlag identifies services supported by a decred peer.
|
|
type ServiceFlag uint64
|
|
|
|
const (
|
|
// SFNodeNetwork is a flag used to indicate a peer is a full node.
|
|
SFNodeNetwork ServiceFlag = 1 << iota
|
|
|
|
// SFNodeBloom is a flag used to indiciate a peer supports bloom
|
|
// filtering.
|
|
SFNodeBloom
|
|
)
|
|
|
|
// Map of service flags back to their constant names for pretty printing.
|
|
var sfStrings = map[ServiceFlag]string{
|
|
SFNodeNetwork: "SFNodeNetwork",
|
|
SFNodeBloom: "SFNodeBloom",
|
|
}
|
|
|
|
// orderedSFStrings is an ordered list of service flags from highest to
|
|
// lowest.
|
|
var orderedSFStrings = []ServiceFlag{
|
|
SFNodeNetwork,
|
|
SFNodeBloom,
|
|
}
|
|
|
|
// String returns the ServiceFlag in human-readable form.
|
|
func (f ServiceFlag) String() string {
|
|
// No flags are set.
|
|
if f == 0 {
|
|
return "0x0"
|
|
}
|
|
|
|
// Add individual bit flags.
|
|
s := ""
|
|
for _, flag := range orderedSFStrings {
|
|
if f&flag == flag {
|
|
s += sfStrings[flag] + "|"
|
|
f -= flag
|
|
}
|
|
}
|
|
|
|
// Add any remaining flags which aren't accounted for as hex.
|
|
s = strings.TrimRight(s, "|")
|
|
if f != 0 {
|
|
s += "|0x" + strconv.FormatUint(uint64(f), 16)
|
|
}
|
|
s = strings.TrimLeft(s, "|")
|
|
return s
|
|
}
|
|
|
|
// CurrencyNet represents which decred network a message belongs to.
|
|
type CurrencyNet uint32
|
|
|
|
// Constants used to indicate the message decred network. They can also be
|
|
// used to seek to the next message when a stream's state is unknown, but
|
|
// this package does not provide that functionality since it's generally a
|
|
// better idea to simply disconnect clients that are misbehaving over TCP.
|
|
const (
|
|
// MainNet represents the main decred network.
|
|
MainNet CurrencyNet = 0xd9b400f9
|
|
|
|
// RegTest represents the regression test network.
|
|
RegTest CurrencyNet = 0xdab500fa
|
|
|
|
// TestNet2 represents the 2nd test network.
|
|
TestNet2 CurrencyNet = 0x48e7a065
|
|
|
|
// SimNet represents the simulation test network.
|
|
SimNet CurrencyNet = 0x12141c16
|
|
)
|
|
|
|
// bnStrings is a map of decred networks back to their constant names for
|
|
// pretty printing.
|
|
var bnStrings = map[CurrencyNet]string{
|
|
MainNet: "MainNet",
|
|
TestNet2: "TestNet2",
|
|
RegTest: "RegNet",
|
|
SimNet: "SimNet",
|
|
}
|
|
|
|
// String returns the CurrencyNet in human-readable form.
|
|
func (n CurrencyNet) String() string {
|
|
if s, ok := bnStrings[n]; ok {
|
|
return s
|
|
}
|
|
|
|
return fmt.Sprintf("Unknown CurrencyNet (%d)", uint32(n))
|
|
}
|